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ruby/parse.y

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/**********************************************************************
parse.y -
$Author$
created at: Fri May 28 18:02:42 JST 1993
Copyright (C) 1993-2007 Yukihiro Matsumoto
**********************************************************************/
%{
#if !YYPURE
# error needs pure parser
#endif
#define YYDEBUG 1
#define YYERROR_VERBOSE 1
#define YYSTACK_USE_ALLOCA 0
#define YYLTYPE rb_code_location_t
#define YYLTYPE_IS_DECLARED 1
#include "ruby/ruby.h"
#include "ruby/st.h"
#include "ruby/encoding.h"
#include "internal.h"
#include "node.h"
#include "parse.h"
#include "symbol.h"
#include "regenc.h"
#include <stdio.h>
#include <errno.h>
#include <ctype.h>
#include "probes.h"
#ifndef WARN_PAST_SCOPE
# define WARN_PAST_SCOPE 0
#endif
#define TAB_WIDTH 8
#define yydebug (p->debug) /* disable the global variable definition */
#define YYMALLOC(size) rb_parser_malloc(p, (size))
#define YYREALLOC(ptr, size) rb_parser_realloc(p, (ptr), (size))
#define YYCALLOC(nelem, size) rb_parser_calloc(p, (nelem), (size))
#define YYFREE(ptr) rb_parser_free(p, (ptr))
#define YYFPRINTF rb_parser_printf
#define YYPRINT(out, tok, val) parser_token_value_print(p, (tok), &(val))
#define YY_LOCATION_PRINT(File, loc) \
rb_parser_printf(p, "%d.%d-%d.%d", \
(loc).beg_pos.lineno, (loc).beg_pos.column,\
(loc).end_pos.lineno, (loc).end_pos.column)
#define YYLLOC_DEFAULT(Current, Rhs, N) \
do \
if (N) \
{ \
(Current).beg_pos = YYRHSLOC(Rhs, 1).beg_pos; \
(Current).end_pos = YYRHSLOC(Rhs, N).end_pos; \
} \
else \
{ \
(Current).beg_pos = YYRHSLOC(Rhs, 0).end_pos; \
(Current).end_pos = YYRHSLOC(Rhs, 0).end_pos; \
} \
while (0)
#define RUBY_SET_YYLLOC_FROM_STRTERM_HEREDOC(Current) \
rb_parser_set_location_from_strterm_heredoc(p, &p->lex.strterm->u.heredoc, &(Current))
#define RUBY_SET_YYLLOC_OF_NONE(Current) \
rb_parser_set_location_of_none(p, &(Current))
#define RUBY_SET_YYLLOC(Current) \
rb_parser_set_location(p, &(Current))
#define RUBY_INIT_YYLLOC() \
{ \
{p->ruby_sourceline, (int)(p->lex.ptok - p->lex.pbeg)}, \
{p->ruby_sourceline, (int)(p->lex.pcur - p->lex.pbeg)}, \
}
enum lex_state_bits {
EXPR_BEG_bit, /* ignore newline, +/- is a sign. */
EXPR_END_bit, /* newline significant, +/- is an operator. */
EXPR_ENDARG_bit, /* ditto, and unbound braces. */
EXPR_ENDFN_bit, /* ditto, and unbound braces. */
EXPR_ARG_bit, /* newline significant, +/- is an operator. */
EXPR_CMDARG_bit, /* newline significant, +/- is an operator. */
EXPR_MID_bit, /* newline significant, +/- is an operator. */
EXPR_FNAME_bit, /* ignore newline, no reserved words. */
EXPR_DOT_bit, /* right after `.' or `::', no reserved words. */
EXPR_CLASS_bit, /* immediate after `class', no here document. */
EXPR_LABEL_bit, /* flag bit, label is allowed. */
EXPR_LABELED_bit, /* flag bit, just after a label. */
EXPR_FITEM_bit, /* symbol literal as FNAME. */
EXPR_MAX_STATE
};
/* examine combinations */
enum lex_state_e {
#define DEF_EXPR(n) EXPR_##n = (1 << EXPR_##n##_bit)
DEF_EXPR(BEG),
DEF_EXPR(END),
DEF_EXPR(ENDARG),
DEF_EXPR(ENDFN),
DEF_EXPR(ARG),
DEF_EXPR(CMDARG),
DEF_EXPR(MID),
DEF_EXPR(FNAME),
DEF_EXPR(DOT),
DEF_EXPR(CLASS),
DEF_EXPR(LABEL),
DEF_EXPR(LABELED),
DEF_EXPR(FITEM),
EXPR_VALUE = EXPR_BEG,
EXPR_BEG_ANY = (EXPR_BEG | EXPR_MID | EXPR_CLASS),
EXPR_ARG_ANY = (EXPR_ARG | EXPR_CMDARG),
EXPR_END_ANY = (EXPR_END | EXPR_ENDARG | EXPR_ENDFN),
EXPR_NONE = 0
};
#define IS_lex_state_for(x, ls) ((x) & (ls))
#define IS_lex_state_all_for(x, ls) (((x) & (ls)) == (ls))
#define IS_lex_state(ls) IS_lex_state_for(p->lex.state, (ls))
#define IS_lex_state_all(ls) IS_lex_state_all_for(p->lex.state, (ls))
# define SET_LEX_STATE(ls) \
(p->lex.state = \
(p->debug ? \
rb_parser_trace_lex_state(p, p->lex.state, (ls), __LINE__) : \
(enum lex_state_e)(ls)))
typedef VALUE stack_type;
static const rb_code_location_t NULL_LOC = { {0, -1}, {0, -1} };
# define SHOW_BITSTACK(stack, name) (p->debug ? rb_parser_show_bitstack(p, stack, name, __LINE__) : (void)0)
# define BITSTACK_PUSH(stack, n) (((p->stack) = ((p->stack)<<1)|((n)&1)), SHOW_BITSTACK(p->stack, #stack"(push)"))
# define BITSTACK_POP(stack) (((p->stack) = (p->stack) >> 1), SHOW_BITSTACK(p->stack, #stack"(pop)"))
# define BITSTACK_SET_P(stack) (SHOW_BITSTACK(p->stack, #stack), (p->stack)&1)
# define BITSTACK_SET(stack, n) ((p->stack)=(n), SHOW_BITSTACK(p->stack, #stack"(set)"))
/* A flag to identify keyword_do_cond, "do" keyword after condition expression.
Examples: `while ... do`, `until ... do`, and `for ... in ... do` */
#define COND_PUSH(n) BITSTACK_PUSH(cond_stack, (n))
#define COND_POP() BITSTACK_POP(cond_stack)
#define COND_P() BITSTACK_SET_P(cond_stack)
#define COND_SET(n) BITSTACK_SET(cond_stack, (n))
/* A flag to identify keyword_do_block; "do" keyword after command_call.
Example: `foo 1, 2 do`. */
#define CMDARG_PUSH(n) BITSTACK_PUSH(cmdarg_stack, (n))
#define CMDARG_POP() BITSTACK_POP(cmdarg_stack)
#define CMDARG_P() BITSTACK_SET_P(cmdarg_stack)
#define CMDARG_SET(n) BITSTACK_SET(cmdarg_stack, (n))
struct vtable {
ID *tbl;
int pos;
int capa;
struct vtable *prev;
};
struct local_vars {
struct vtable *args;
struct vtable *vars;
struct vtable *used;
# if WARN_PAST_SCOPE
struct vtable *past;
# endif
struct local_vars *prev;
# ifndef RIPPER
struct {
NODE *outer, *inner, *current;
} numparam;
# endif
};
enum {
ORDINAL_PARAM = -1,
NO_PARAM = 0,
NUMPARAM_MAX = 9,
};
#define NUMPARAM_ID_P(id) numparam_id_p(id)
#define NUMPARAM_ID_TO_IDX(id) (unsigned int)(((id) >> ID_SCOPE_SHIFT) - tNUMPARAM_1 + 1)
#define NUMPARAM_IDX_TO_ID(idx) TOKEN2LOCALID((tNUMPARAM_1 + (idx) - 1))
static int
numparam_id_p(ID id)
{
if (!is_local_id(id)) return 0;
unsigned int idx = NUMPARAM_ID_TO_IDX(id);
return idx > 0 && idx <= NUMPARAM_MAX;
}
#define DVARS_INHERIT ((void*)1)
#define DVARS_TOPSCOPE NULL
#define DVARS_TERMINAL_P(tbl) ((tbl) == DVARS_INHERIT || (tbl) == DVARS_TOPSCOPE)
typedef struct token_info {
const char *token;
rb_code_position_t beg;
int indent;
int nonspc;
struct token_info *next;
} token_info;
typedef struct rb_strterm_struct rb_strterm_t;
/*
Structure of Lexer Buffer:
lex.pbeg lex.ptok lex.pcur lex.pend
| | | |
|------------+------------+------------|
|<---------->|
token
*/
struct parser_params {
rb_imemo_tmpbuf_t *heap;
YYSTYPE *lval;
struct {
rb_strterm_t *strterm;
VALUE (*gets)(struct parser_params*,VALUE);
VALUE input;
VALUE prevline;
VALUE lastline;
VALUE nextline;
const char *pbeg;
const char *pcur;
const char *pend;
const char *ptok;
union {
long ptr;
VALUE (*call)(VALUE, int);
} gets_;
enum lex_state_e state;
/* track the nest level of any parens "()[]{}" */
int paren_nest;
/* keep p->lex.paren_nest at the beginning of lambda "->" to detect tLAMBEG and keyword_do_LAMBDA */
int lpar_beg;
/* track the nest level of only braces "{}" */
int brace_nest;
} lex;
stack_type cond_stack;
stack_type cmdarg_stack;
int tokidx;
int toksiz;
int tokline;
int heredoc_end;
int heredoc_indent;
int heredoc_line_indent;
char *tokenbuf;
struct local_vars *lvtbl;
st_table *pvtbl;
int line_count;
int ruby_sourceline; /* current line no. */
const char *ruby_sourcefile; /* current source file */
VALUE ruby_sourcefile_string;
rb_encoding *enc;
token_info *token_info;
VALUE case_labels;
VALUE compile_option;
VALUE debug_buffer;
VALUE debug_output;
ID cur_arg;
rb_ast_t *ast;
int node_id;
int max_numparam;
unsigned int command_start:1;
unsigned int eofp: 1;
unsigned int ruby__end__seen: 1;
unsigned int debug: 1;
unsigned int has_shebang: 1;
unsigned int in_defined: 1;
unsigned int in_kwarg: 1;
unsigned int in_def: 1;
unsigned int in_class: 1;
unsigned int token_seen: 1;
unsigned int token_info_enabled: 1;
# if WARN_PAST_SCOPE
unsigned int past_scope_enabled: 1;
# endif
unsigned int error_p: 1;
unsigned int cr_seen: 1;
#ifndef RIPPER
/* Ruby core only */
unsigned int do_print: 1;
unsigned int do_loop: 1;
unsigned int do_chomp: 1;
unsigned int do_split: 1;
unsigned int warn_location: 1;
NODE *eval_tree_begin;
NODE *eval_tree;
VALUE error_buffer;
VALUE debug_lines;
const struct rb_iseq_struct *parent_iseq;
#else
/* Ripper only */
struct {
VALUE token;
int line;
int col;
} delayed;
VALUE value;
VALUE result;
VALUE parsing_thread;
#endif
};
#define intern_cstr(n,l,en) rb_intern3(n,l,en)
#define STR_NEW(ptr,len) rb_enc_str_new((ptr),(len),p->enc)
#define STR_NEW0() rb_enc_str_new(0,0,p->enc)
#define STR_NEW2(ptr) rb_enc_str_new((ptr),strlen(ptr),p->enc)
#define STR_NEW3(ptr,len,e,func) parser_str_new((ptr),(len),(e),(func),p->enc)
#define TOK_INTERN() intern_cstr(tok(p), toklen(p), p->enc)
static int parser_yyerror(struct parser_params*, const YYLTYPE *yylloc, const char*);
#define yyerror0(msg) parser_yyerror(p, NULL, (msg))
#define yyerror1(loc, msg) parser_yyerror(p, (loc), (msg))
#define yyerror(yylloc, p, msg) parser_yyerror(p, yylloc, msg)
#define token_flush(ptr) ((ptr)->lex.ptok = (ptr)->lex.pcur)
#ifdef RIPPER
#define compile_for_eval (0)
#else
#define compile_for_eval (p->parent_iseq != 0)
#endif
#define token_column ((int)(p->lex.ptok - p->lex.pbeg))
#define CALL_Q_P(q) ((q) == TOKEN2VAL(tANDDOT))
#define NODE_CALL_Q(q) (CALL_Q_P(q) ? NODE_QCALL : NODE_CALL)
#define NEW_QCALL(q,r,m,a,loc) NEW_NODE(NODE_CALL_Q(q),r,m,a,loc)
#define lambda_beginning_p() (p->lex.lpar_beg == p->lex.paren_nest)
static enum yytokentype yylex(YYSTYPE*, YYLTYPE*, struct parser_params*);
#ifndef RIPPER
static inline void
rb_discard_node(struct parser_params *p, NODE *n)
{
rb_ast_delete_node(p->ast, n);
}
#endif
#ifdef RIPPER
static inline VALUE
add_mark_object(struct parser_params *p, VALUE obj)
{
if (!SPECIAL_CONST_P(obj)
&& !RB_TYPE_P(obj, T_NODE) /* Ripper jumbles NODE objects and other objects... */
) {
rb_ast_add_mark_object(p->ast, obj);
}
return obj;
}
#else
static NODE* node_newnode_with_locals(struct parser_params *, enum node_type, VALUE, VALUE, const rb_code_location_t*);
#endif
static NODE* node_newnode(struct parser_params *, enum node_type, VALUE, VALUE, VALUE, const rb_code_location_t*);
#define rb_node_newnode(type, a1, a2, a3, loc) node_newnode(p, (type), (a1), (a2), (a3), (loc))
static NODE *nd_set_loc(NODE *nd, const YYLTYPE *loc);
static int
parser_get_node_id(struct parser_params *p)
{
int node_id = p->node_id;
p->node_id++;
return node_id;
}
#ifndef RIPPER
static inline void
set_line_body(NODE *body, int line)
{
if (!body) return;
switch (nd_type(body)) {
case NODE_RESCUE:
case NODE_ENSURE:
nd_set_line(body, line);
}
}
#define yyparse ruby_yyparse
static NODE* cond(struct parser_params *p, NODE *node, const YYLTYPE *loc);
static NODE* method_cond(struct parser_params *p, NODE *node, const YYLTYPE *loc);
#define new_nil(loc) NEW_NIL(loc)
static NODE *new_if(struct parser_params*,NODE*,NODE*,NODE*,const YYLTYPE*);
static NODE *new_unless(struct parser_params*,NODE*,NODE*,NODE*,const YYLTYPE*);
static NODE *logop(struct parser_params*,ID,NODE*,NODE*,const YYLTYPE*,const YYLTYPE*);
static NODE *newline_node(NODE*);
static void fixpos(NODE*,NODE*);
static int value_expr_gen(struct parser_params*,NODE*);
static void void_expr(struct parser_params*,NODE*);
static NODE *remove_begin(NODE*);
static NODE *remove_begin_all(NODE*);
#define value_expr(node) value_expr_gen(p, (node) = remove_begin(node))
static NODE *void_stmts(struct parser_params*,NODE*);
static void reduce_nodes(struct parser_params*,NODE**);
static void block_dup_check(struct parser_params*,NODE*,NODE*);
static NODE *block_append(struct parser_params*,NODE*,NODE*);
static NODE *list_append(struct parser_params*,NODE*,NODE*);
static NODE *list_concat(NODE*,NODE*);
static NODE *arg_append(struct parser_params*,NODE*,NODE*,const YYLTYPE*);
static NODE *last_arg_append(struct parser_params *p, NODE *args, NODE *last_arg, const YYLTYPE *loc);
static NODE *rest_arg_append(struct parser_params *p, NODE *args, NODE *rest_arg, const YYLTYPE *loc);
static NODE *literal_concat(struct parser_params*,NODE*,NODE*,const YYLTYPE*);
static NODE *new_evstr(struct parser_params*,NODE*,const YYLTYPE*);
static NODE *evstr2dstr(struct parser_params*,NODE*);
static NODE *splat_array(NODE*);
static void mark_lvar_used(struct parser_params *p, NODE *rhs);
static NODE *call_bin_op(struct parser_params*,NODE*,ID,NODE*,const YYLTYPE*,const YYLTYPE*);
static NODE *call_uni_op(struct parser_params*,NODE*,ID,const YYLTYPE*,const YYLTYPE*);
static NODE *new_qcall(struct parser_params* p, ID atype, NODE *recv, ID mid, NODE *args, const YYLTYPE *op_loc, const YYLTYPE *loc);
static NODE *new_command_qcall(struct parser_params* p, ID atype, NODE *recv, ID mid, NODE *args, NODE *block, const YYLTYPE *op_loc, const YYLTYPE *loc);
static NODE *method_add_block(struct parser_params*p, NODE *m, NODE *b, const YYLTYPE *loc) {b->nd_iter = m; b->nd_loc = *loc; return b;}
static bool args_info_empty_p(struct rb_args_info *args);
static NODE *new_args(struct parser_params*,NODE*,NODE*,ID,NODE*,NODE*,const YYLTYPE*);
static NODE *new_args_tail(struct parser_params*,NODE*,ID,ID,const YYLTYPE*);
static NODE *new_array_pattern(struct parser_params *p, NODE *constant, NODE *pre_arg, NODE *aryptn, const YYLTYPE *loc);
static NODE *new_array_pattern_tail(struct parser_params *p, NODE *pre_args, int has_rest, ID rest_arg, NODE *post_args, const YYLTYPE *loc);
static NODE *new_hash_pattern(struct parser_params *p, NODE *constant, NODE *hshptn, const YYLTYPE *loc);
static NODE *new_hash_pattern_tail(struct parser_params *p, NODE *kw_args, ID kw_rest_arg, const YYLTYPE *loc);
static NODE *new_kw_arg(struct parser_params *p, NODE *k, const YYLTYPE *loc);
static NODE *args_with_numbered(struct parser_params*,NODE*,int);
static VALUE negate_lit(struct parser_params*, VALUE);
static NODE *ret_args(struct parser_params*,NODE*);
static NODE *arg_blk_pass(NODE*,NODE*);
static NODE *new_yield(struct parser_params*,NODE*,const YYLTYPE*);
static NODE *dsym_node(struct parser_params*,NODE*,const YYLTYPE*);
static NODE *gettable(struct parser_params*,ID,const YYLTYPE*);
static NODE *assignable(struct parser_params*,ID,NODE*,const YYLTYPE*);
static NODE *aryset(struct parser_params*,NODE*,NODE*,const YYLTYPE*);
static NODE *attrset(struct parser_params*,NODE*,ID,ID,const YYLTYPE*);
static void rb_backref_error(struct parser_params*,NODE*);
static NODE *node_assign(struct parser_params*,NODE*,NODE*,const YYLTYPE*);
static NODE *new_op_assign(struct parser_params *p, NODE *lhs, ID op, NODE *rhs, const YYLTYPE *loc);
static NODE *new_ary_op_assign(struct parser_params *p, NODE *ary, NODE *args, ID op, NODE *rhs, const YYLTYPE *args_loc, const YYLTYPE *loc);
static NODE *new_attr_op_assign(struct parser_params *p, NODE *lhs, ID atype, ID attr, ID op, NODE *rhs, const YYLTYPE *loc);
static NODE *new_const_op_assign(struct parser_params *p, NODE *lhs, ID op, NODE *rhs, const YYLTYPE *loc);
static NODE *new_bodystmt(struct parser_params *p, NODE *head, NODE *rescue, NODE *rescue_else, NODE *ensure, const YYLTYPE *loc);
static NODE *const_decl(struct parser_params *p, NODE* path, const YYLTYPE *loc);
static NODE *opt_arg_append(NODE*, NODE*);
static NODE *kwd_append(NODE*, NODE*);
static NODE *new_hash(struct parser_params *p, NODE *hash, const YYLTYPE *loc);
static NODE *new_unique_key_hash(struct parser_params *p, NODE *hash, const YYLTYPE *loc);
static NODE *new_defined(struct parser_params *p, NODE *expr, const YYLTYPE *loc);
static NODE *new_regexp(struct parser_params *, NODE *, int, const YYLTYPE *);
#define make_list(list, loc) ((list) ? (nd_set_loc(list, loc), list) : NEW_ZLIST(loc))
static NODE *new_xstring(struct parser_params *, NODE *, const YYLTYPE *loc);
static NODE *symbol_append(struct parser_params *p, NODE *symbols, NODE *symbol);
static NODE *match_op(struct parser_params*,NODE*,NODE*,const YYLTYPE*,const YYLTYPE*);
static ID *local_tbl(struct parser_params*);
static VALUE reg_compile(struct parser_params*, VALUE, int);
static void reg_fragment_setenc(struct parser_params*, VALUE, int);
static int reg_fragment_check(struct parser_params*, VALUE, int);
static NODE *reg_named_capture_assign(struct parser_params* p, VALUE regexp, const YYLTYPE *loc);
static int literal_concat0(struct parser_params *p, VALUE head, VALUE tail);
static NODE *heredoc_dedent(struct parser_params*,NODE*);
static void check_literal_when(struct parser_params *p, NODE *args, const YYLTYPE *loc);
static void error_duplicate_pattern_variable(struct parser_params *p, ID id, const YYLTYPE *loc);
#define get_id(id) (id)
#define get_value(val) (val)
#define get_num(num) (num)
#else /* RIPPER */
#define NODE_RIPPER NODE_CDECL
static inline VALUE
ripper_new_yylval(struct parser_params *p, ID a, VALUE b, VALUE c)
{
add_mark_object(p, b);
add_mark_object(p, c);
return (VALUE)NEW_CDECL(a, b, c, &NULL_LOC);
}
static inline int
ripper_is_node_yylval(VALUE n)
{
return RB_TYPE_P(n, T_NODE) && nd_type(RNODE(n)) == NODE_RIPPER;
}
#define value_expr(node) ((void)(node))
#define remove_begin(node) (node)
#define void_stmts(p,x) (x)
#define rb_dvar_defined(id, base) 0
#define rb_local_defined(id, base) 0
static ID ripper_get_id(VALUE);
#define get_id(id) ripper_get_id(id)
static VALUE ripper_get_value(VALUE);
#define get_value(val) ripper_get_value(val)
#define get_num(num) (int)get_id(num)
static VALUE assignable(struct parser_params*,VALUE);
static int id_is_var(struct parser_params *p, ID id);
#define method_cond(p,node,loc) (node)
#define call_bin_op(p, recv,id,arg1,op_loc,loc) dispatch3(binary, (recv), STATIC_ID2SYM(id), (arg1))
#define match_op(p,node1,node2,op_loc,loc) call_bin_op(0, (node1), idEqTilde, (node2), op_loc, loc)
#define call_uni_op(p, recv,id,op_loc,loc) dispatch2(unary, STATIC_ID2SYM(id), (recv))
#define logop(p,id,node1,node2,op_loc,loc) call_bin_op(0, (node1), (id), (node2), op_loc, loc)
#define new_nil(loc) Qnil
static VALUE new_regexp(struct parser_params *, VALUE, VALUE, const YYLTYPE *);
static VALUE const_decl(struct parser_params *p, VALUE path);
static VALUE var_field(struct parser_params *p, VALUE a);
static VALUE assign_error(struct parser_params *p, VALUE a);
static VALUE parser_reg_compile(struct parser_params*, VALUE, int, VALUE *);
#endif /* !RIPPER */
/* forward declaration */
typedef struct rb_strterm_heredoc_struct rb_strterm_heredoc_t;
RUBY_SYMBOL_EXPORT_BEGIN
VALUE rb_parser_reg_compile(struct parser_params* p, VALUE str, int options);
int rb_reg_fragment_setenc(struct parser_params*, VALUE, int);
enum lex_state_e rb_parser_trace_lex_state(struct parser_params *, enum lex_state_e, enum lex_state_e, int);
VALUE rb_parser_lex_state_name(enum lex_state_e state);
void rb_parser_show_bitstack(struct parser_params *, stack_type, const char *, int);
PRINTF_ARGS(void rb_parser_fatal(struct parser_params *p, const char *fmt, ...), 2, 3);
YYLTYPE *rb_parser_set_location_from_strterm_heredoc(struct parser_params *p, rb_strterm_heredoc_t *here, YYLTYPE *yylloc);
YYLTYPE *rb_parser_set_location_of_none(struct parser_params *p, YYLTYPE *yylloc);
YYLTYPE *rb_parser_set_location(struct parser_params *p, YYLTYPE *yylloc);
RUBY_SYMBOL_EXPORT_END
static void parser_token_value_print(struct parser_params *p, enum yytokentype type, const YYSTYPE *valp);
static ID formal_argument(struct parser_params*, ID);
static ID shadowing_lvar(struct parser_params*,ID);
static void new_bv(struct parser_params*,ID);
static void local_push(struct parser_params*,int);
static void local_pop(struct parser_params*);
static void local_var(struct parser_params*, ID);
static void arg_var(struct parser_params*, ID);
static int local_id(struct parser_params *p, ID id);
static int local_id_ref(struct parser_params*, ID, ID **);
#ifndef RIPPER
static ID internal_id(struct parser_params*);
#endif
static const struct vtable *dyna_push(struct parser_params *);
static void dyna_pop(struct parser_params*, const struct vtable *);
static int dyna_in_block(struct parser_params*);
#define dyna_var(p, id) local_var(p, id)
static int dvar_defined(struct parser_params*, ID);
static int dvar_defined_ref(struct parser_params*, ID, ID**);
static int dvar_curr(struct parser_params*,ID);
static int lvar_defined(struct parser_params*, ID);
static NODE *numparam_push(struct parser_params *p);
static void numparam_pop(struct parser_params *p, NODE *prev_inner);
#ifdef RIPPER
# define METHOD_NOT idNOT
#else
# define METHOD_NOT '!'
#endif
#define idFWD_REST '*'
#ifdef RUBY3_KEYWORDS
#define idFWD_KWREST idPow /* Use simple "**", as tDSTAR is "**arg" */
#else
#define idFWD_KWREST 0
#endif
#define idFWD_BLOCK '&'
#define RE_OPTION_ONCE (1<<16)
#define RE_OPTION_ENCODING_SHIFT 8
#define RE_OPTION_ENCODING(e) (((e)&0xff)<<RE_OPTION_ENCODING_SHIFT)
#define RE_OPTION_ENCODING_IDX(o) (((o)>>RE_OPTION_ENCODING_SHIFT)&0xff)
#define RE_OPTION_ENCODING_NONE(o) ((o)&RE_OPTION_ARG_ENCODING_NONE)
#define RE_OPTION_MASK 0xff
#define RE_OPTION_ARG_ENCODING_NONE 32
/* structs for managing terminator of string literal and heredocment */
typedef struct rb_strterm_literal_struct {
union {
VALUE dummy;
long nest;
} u0;
union {
VALUE dummy;
long func; /* STR_FUNC_* (e.g., STR_FUNC_ESCAPE and STR_FUNC_EXPAND) */
} u1;
union {
VALUE dummy;
long paren; /* '(' of `%q(...)` */
} u2;
union {
VALUE dummy;
long term; /* ')' of `%q(...)` */
} u3;
} rb_strterm_literal_t;
#define HERETERM_LENGTH_BITS ((SIZEOF_VALUE - 1) * CHAR_BIT - 1)
struct rb_strterm_heredoc_struct {
VALUE lastline; /* the string of line that contains `<<"END"` */
long offset; /* the column of END in `<<"END"` */
int sourceline; /* lineno of the line that contains `<<"END"` */
unsigned length /* the length of END in `<<"END"` */
#if HERETERM_LENGTH_BITS < SIZEOF_INT * CHAR_BIT
: HERETERM_LENGTH_BITS
# define HERETERM_LENGTH_MAX ((1U << HERETERM_LENGTH_BITS) - 1)
#else
# define HERETERM_LENGTH_MAX UINT_MAX
#endif
;
#if HERETERM_LENGTH_BITS < SIZEOF_INT * CHAR_BIT
unsigned quote: 1;
unsigned func: 8;
#else
uint8_t quote;
uint8_t func;
#endif
};
STATIC_ASSERT(rb_strterm_heredoc_t, sizeof(rb_strterm_heredoc_t) <= 4 * SIZEOF_VALUE);
#define STRTERM_HEREDOC IMEMO_FL_USER0
struct rb_strterm_struct {
VALUE flags;
union {
rb_strterm_literal_t literal;
rb_strterm_heredoc_t heredoc;
} u;
};
#ifndef RIPPER
void
rb_strterm_mark(VALUE obj)
{
rb_strterm_t *strterm = (rb_strterm_t*)obj;
if (RBASIC(obj)->flags & STRTERM_HEREDOC) {
rb_strterm_heredoc_t *heredoc = &strterm->u.heredoc;
rb_gc_mark(heredoc->lastline);
}
}
#endif
#define yytnamerr(yyres, yystr) (YYSIZE_T)rb_yytnamerr(p, yyres, yystr)
size_t rb_yytnamerr(struct parser_params *p, char *yyres, const char *yystr);
#define TOKEN2ID(tok) ( \
tTOKEN_LOCAL_BEGIN<(tok)&&(tok)<tTOKEN_LOCAL_END ? TOKEN2LOCALID(tok) : \
tTOKEN_INSTANCE_BEGIN<(tok)&&(tok)<tTOKEN_INSTANCE_END ? TOKEN2INSTANCEID(tok) : \
tTOKEN_GLOBAL_BEGIN<(tok)&&(tok)<tTOKEN_GLOBAL_END ? TOKEN2GLOBALID(tok) : \
tTOKEN_CONST_BEGIN<(tok)&&(tok)<tTOKEN_CONST_END ? TOKEN2CONSTID(tok) : \
tTOKEN_CLASS_BEGIN<(tok)&&(tok)<tTOKEN_CLASS_END ? TOKEN2CLASSID(tok) : \
tTOKEN_ATTRSET_BEGIN<(tok)&&(tok)<tTOKEN_ATTRSET_END ? TOKEN2ATTRSETID(tok) : \
((tok) / ((tok)<tPRESERVED_ID_END && ((tok)>=128 || rb_ispunct(tok)))))
/****** Ripper *******/
#ifdef RIPPER
#define RIPPER_VERSION "0.1.0"
static inline VALUE intern_sym(const char *name);
#include "eventids1.c"
#include "eventids2.c"
static VALUE ripper_dispatch0(struct parser_params*,ID);
static VALUE ripper_dispatch1(struct parser_params*,ID,VALUE);
static VALUE ripper_dispatch2(struct parser_params*,ID,VALUE,VALUE);
static VALUE ripper_dispatch3(struct parser_params*,ID,VALUE,VALUE,VALUE);
static VALUE ripper_dispatch4(struct parser_params*,ID,VALUE,VALUE,VALUE,VALUE);
static VALUE ripper_dispatch5(struct parser_params*,ID,VALUE,VALUE,VALUE,VALUE,VALUE);
static VALUE ripper_dispatch7(struct parser_params*,ID,VALUE,VALUE,VALUE,VALUE,VALUE,VALUE,VALUE);
static void ripper_error(struct parser_params *p);
#define dispatch0(n) ripper_dispatch0(p, TOKEN_PASTE(ripper_id_, n))
#define dispatch1(n,a) ripper_dispatch1(p, TOKEN_PASTE(ripper_id_, n), (a))
#define dispatch2(n,a,b) ripper_dispatch2(p, TOKEN_PASTE(ripper_id_, n), (a), (b))
#define dispatch3(n,a,b,c) ripper_dispatch3(p, TOKEN_PASTE(ripper_id_, n), (a), (b), (c))
#define dispatch4(n,a,b,c,d) ripper_dispatch4(p, TOKEN_PASTE(ripper_id_, n), (a), (b), (c), (d))
#define dispatch5(n,a,b,c,d,e) ripper_dispatch5(p, TOKEN_PASTE(ripper_id_, n), (a), (b), (c), (d), (e))
#define dispatch7(n,a,b,c,d,e,f,g) ripper_dispatch7(p, TOKEN_PASTE(ripper_id_, n), (a), (b), (c), (d), (e), (f), (g))
#define yyparse ripper_yyparse
#define ID2VAL(id) STATIC_ID2SYM(id)
#define TOKEN2VAL(t) ID2VAL(TOKEN2ID(t))
#define KWD2EID(t, v) ripper_new_yylval(p, keyword_##t, get_value(v), 0)
#define params_new(pars, opts, rest, pars2, kws, kwrest, blk) \
dispatch7(params, (pars), (opts), (rest), (pars2), (kws), (kwrest), (blk))
#define escape_Qundef(x) ((x)==Qundef ? Qnil : (x))
static inline VALUE
new_args(struct parser_params *p, VALUE pre_args, VALUE opt_args, VALUE rest_arg, VALUE post_args, VALUE tail, YYLTYPE *loc)
{
NODE *t = (NODE *)tail;
VALUE kw_args = t->u1.value, kw_rest_arg = t->u2.value, block = t->u3.value;
return params_new(pre_args, opt_args, rest_arg, post_args, kw_args, kw_rest_arg, escape_Qundef(block));
}
static inline VALUE
new_args_tail(struct parser_params *p, VALUE kw_args, VALUE kw_rest_arg, VALUE block, YYLTYPE *loc)
{
NODE *t = rb_node_newnode(NODE_ARGS_AUX, kw_args, kw_rest_arg, block, &NULL_LOC);
add_mark_object(p, kw_args);
add_mark_object(p, kw_rest_arg);
add_mark_object(p, block);
return (VALUE)t;
}
static inline VALUE
args_with_numbered(struct parser_params *p, VALUE args, int max_numparam)
{
return args;
}
static VALUE
new_array_pattern(struct parser_params *p, VALUE constant, VALUE pre_arg, VALUE aryptn, const YYLTYPE *loc)
{
NODE *t = (NODE *)aryptn;
struct rb_ary_pattern_info *apinfo = t->nd_apinfo;
VALUE pre_args = Qnil, rest_arg = Qnil, post_args = Qnil;
if (apinfo) {
pre_args = rb_ary_entry(apinfo->imemo, 0);
rest_arg = rb_ary_entry(apinfo->imemo, 1);
post_args = rb_ary_entry(apinfo->imemo, 2);
}
if (!NIL_P(pre_arg)) {
if (!NIL_P(pre_args)) {
rb_ary_unshift(pre_args, pre_arg);
}
else {
pre_args = rb_ary_new_from_args(1, pre_arg);
}
}
return dispatch4(aryptn, constant, pre_args, rest_arg, post_args);
}
static VALUE
new_array_pattern_tail(struct parser_params *p, VALUE pre_args, VALUE has_rest, VALUE rest_arg, VALUE post_args, const YYLTYPE *loc)
{
NODE *t;
struct rb_ary_pattern_info *apinfo;
if (has_rest) {
rest_arg = dispatch1(var_field, rest_arg ? rest_arg : Qnil);
}
else {
rest_arg = Qnil;
}
VALUE tmpbuf = rb_imemo_tmpbuf_auto_free_pointer();
apinfo = ZALLOC(struct rb_ary_pattern_info);
rb_imemo_tmpbuf_set_ptr(tmpbuf, apinfo);
apinfo->imemo = rb_ary_new_from_args(4, pre_args, rest_arg, post_args, tmpbuf);
t = rb_node_newnode(NODE_ARYPTN, Qnil, Qnil, (VALUE)apinfo, &NULL_LOC);
RB_OBJ_WRITTEN(p->ast, Qnil, apinfo->imemo);
return (VALUE)t;
}
#define new_hash(p,h,l) rb_ary_new_from_args(0)
static VALUE
new_unique_key_hash(struct parser_params *p, VALUE ary, const YYLTYPE *loc)
{
const long len = RARRAY_LEN(ary);
st_table *tbl;
long i;
tbl = st_init_strtable_with_size(len);
for (i = 0; i < len; i++) {
VALUE key, a1, a2, a3;
a1 = RARRAY_AREF(ary, i);
if (!(RB_TYPE_P(a1, T_ARRAY) && RARRAY_LEN(a1) == 2)) goto error;
a2 = RARRAY_AREF(a1, 0);
if (!RB_TYPE_P(a2, T_ARRAY)) goto error;
switch (RARRAY_LEN(a2)) {
case 2: /* "key": */
a3 = RARRAY_AREF(a2, 1);
if (!(RB_TYPE_P(a3, T_ARRAY) && RARRAY_LEN(a3) == 3)) goto error;
key = RARRAY_AREF(a3, 1);
break;
case 3: /* key: */
key = RARRAY_AREF(a2, 1);
break;
default:
goto error;
}
if (!RB_TYPE_P(key, T_STRING)) goto error;
if (st_is_member(tbl, (st_data_t)RSTRING_PTR(key))) goto error;
st_insert(tbl, (st_data_t)RSTRING_PTR(key), (st_data_t)ary);
}
st_free_table(tbl);
return ary;
error:
ripper_error(p);
st_free_table(tbl);
return Qnil;
}
static VALUE
new_hash_pattern(struct parser_params *p, VALUE constant, VALUE hshptn, const YYLTYPE *loc)
{
NODE *t = (NODE *)hshptn;
VALUE kw_args = t->u1.value, kw_rest_arg = t->u2.value;
return dispatch3(hshptn, constant, kw_args, kw_rest_arg);
}
static VALUE
new_hash_pattern_tail(struct parser_params *p, VALUE kw_args, VALUE kw_rest_arg, const YYLTYPE *loc)
{
NODE *t;
if (kw_rest_arg) {
kw_rest_arg = dispatch1(var_field, kw_rest_arg);
}
else {
kw_rest_arg = Qnil;
}
t = rb_node_newnode(NODE_HSHPTN, kw_args, kw_rest_arg, 0, &NULL_LOC);
add_mark_object(p, kw_args);
add_mark_object(p, kw_rest_arg);
return (VALUE)t;
}
#define new_defined(p,expr,loc) dispatch1(defined, (expr))
static VALUE heredoc_dedent(struct parser_params*,VALUE);
#else
#define ID2VAL(id) (id)
#define TOKEN2VAL(t) ID2VAL(t)
#define KWD2EID(t, v) keyword_##t
#endif /* RIPPER */
#ifndef RIPPER
# define Qnone 0
# define Qnull 0
# define ifndef_ripper(x) (x)
#else
# define Qnone Qnil
# define Qnull Qundef
# define ifndef_ripper(x)
#endif
# define rb_warn0(fmt) WARN_CALL(WARN_ARGS(fmt, 1))
# define rb_warn1(fmt,a) WARN_CALL(WARN_ARGS(fmt, 2), (a))
# define rb_warn2(fmt,a,b) WARN_CALL(WARN_ARGS(fmt, 3), (a), (b))
# define rb_warn3(fmt,a,b,c) WARN_CALL(WARN_ARGS(fmt, 4), (a), (b), (c))
# define rb_warn4(fmt,a,b,c,d) WARN_CALL(WARN_ARGS(fmt, 5), (a), (b), (c), (d))
# define rb_warning0(fmt) WARNING_CALL(WARNING_ARGS(fmt, 1))
# define rb_warning1(fmt,a) WARNING_CALL(WARNING_ARGS(fmt, 2), (a))
# define rb_warning2(fmt,a,b) WARNING_CALL(WARNING_ARGS(fmt, 3), (a), (b))
# define rb_warning3(fmt,a,b,c) WARNING_CALL(WARNING_ARGS(fmt, 4), (a), (b), (c))
# define rb_warning4(fmt,a,b,c,d) WARNING_CALL(WARNING_ARGS(fmt, 5), (a), (b), (c), (d))
# define rb_warn0L(l,fmt) WARN_CALL(WARN_ARGS_L(l, fmt, 1))
# define rb_warn1L(l,fmt,a) WARN_CALL(WARN_ARGS_L(l, fmt, 2), (a))
# define rb_warn2L(l,fmt,a,b) WARN_CALL(WARN_ARGS_L(l, fmt, 3), (a), (b))
# define rb_warn3L(l,fmt,a,b,c) WARN_CALL(WARN_ARGS_L(l, fmt, 4), (a), (b), (c))
# define rb_warn4L(l,fmt,a,b,c,d) WARN_CALL(WARN_ARGS_L(l, fmt, 5), (a), (b), (c), (d))
# define rb_warning0L(l,fmt) WARNING_CALL(WARNING_ARGS_L(l, fmt, 1))
# define rb_warning1L(l,fmt,a) WARNING_CALL(WARNING_ARGS_L(l, fmt, 2), (a))
# define rb_warning2L(l,fmt,a,b) WARNING_CALL(WARNING_ARGS_L(l, fmt, 3), (a), (b))
# define rb_warning3L(l,fmt,a,b,c) WARNING_CALL(WARNING_ARGS_L(l, fmt, 4), (a), (b), (c))
# define rb_warning4L(l,fmt,a,b,c,d) WARNING_CALL(WARNING_ARGS_L(l, fmt, 5), (a), (b), (c), (d))
#ifdef RIPPER
static ID id_warn, id_warning, id_gets, id_assoc;
# define WARN_S_L(s,l) STR_NEW(s,l)
# define WARN_S(s) STR_NEW2(s)
# define WARN_I(i) INT2NUM(i)
# define WARN_ID(i) rb_id2str(i)
# define WARN_IVAL(i) i
# define PRIsWARN "s"
# define WARN_ARGS(fmt,n) p->value, id_warn, n, rb_usascii_str_new_lit(fmt)
# define WARN_ARGS_L(l,fmt,n) WARN_ARGS(fmt,n)
# ifdef HAVE_VA_ARGS_MACRO
# define WARN_CALL(...) rb_funcall(__VA_ARGS__)
# else
# define WARN_CALL rb_funcall
# endif
# define WARNING_ARGS(fmt,n) p->value, id_warning, n, rb_usascii_str_new_lit(fmt)
# define WARNING_ARGS_L(l, fmt,n) WARNING_ARGS(fmt,n)
# ifdef HAVE_VA_ARGS_MACRO
# define WARNING_CALL(...) rb_funcall(__VA_ARGS__)
# else
# define WARNING_CALL rb_funcall
# endif
PRINTF_ARGS(static void ripper_compile_error(struct parser_params*, const char *fmt, ...), 2, 3);
# define compile_error ripper_compile_error
#else
# define WARN_S_L(s,l) s
# define WARN_S(s) s
# define WARN_I(i) i
# define WARN_ID(i) rb_id2name(i)
# define WARN_IVAL(i) NUM2INT(i)
# define PRIsWARN PRIsVALUE
# define WARN_ARGS(fmt,n) WARN_ARGS_L(p->ruby_sourceline,fmt,n)
# define WARN_ARGS_L(l,fmt,n) p->ruby_sourcefile, (l), (fmt)
# define WARN_CALL rb_compile_warn
# define WARNING_ARGS(fmt,n) WARN_ARGS(fmt,n)
# define WARNING_ARGS_L(l,fmt,n) WARN_ARGS_L(l,fmt,n)
# define WARNING_CALL rb_compile_warning
PRINTF_ARGS(static void parser_compile_error(struct parser_params*, const char *fmt, ...), 2, 3);
# define compile_error parser_compile_error
#endif
static void token_info_setup(token_info *ptinfo, const char *ptr, const rb_code_location_t *loc);
static void token_info_push(struct parser_params*, const char *token, const rb_code_location_t *loc);
static void token_info_pop(struct parser_params*, const char *token, const rb_code_location_t *loc);
static void token_info_warn(struct parser_params *p, const char *token, token_info *ptinfo_beg, int same, const rb_code_location_t *loc);
#define WARN_EOL(tok) \
(looking_at_eol_p(p) ? \
(void)rb_warning0("`" tok "' at the end of line without an expression") : \
(void)0)
static int looking_at_eol_p(struct parser_params *p);
%}
%expect 0
%define api.pure
%lex-param {struct parser_params *p}
%parse-param {struct parser_params *p}
%initial-action
{
RUBY_SET_YYLLOC_OF_NONE(@$);
};
%union {
VALUE val;
NODE *node;
ID id;
int num;
st_table *tbl;
const struct vtable *vars;
struct rb_strterm_struct *strterm;
}
%token <id>
keyword_class "`class'"
keyword_module "`module'"
keyword_def "`def'"
keyword_undef "`undef'"
keyword_begin "`begin'"
keyword_rescue "`rescue'"
keyword_ensure "`ensure'"
keyword_end "`end'"
keyword_if "`if'"
keyword_unless "`unless'"
keyword_then "`then'"
keyword_elsif "`elsif'"
keyword_else "`else'"
keyword_case "`case'"
keyword_when "`when'"
keyword_while "`while'"
keyword_until "`until'"
keyword_for "`for'"
keyword_break "`break'"
keyword_next "`next'"
keyword_redo "`redo'"
keyword_retry "`retry'"
keyword_in "`in'"
keyword_do "`do'"
keyword_do_cond "`do' for condition"
keyword_do_block "`do' for block"
keyword_do_LAMBDA "`do' for lambda"
keyword_return "`return'"
keyword_yield "`yield'"
keyword_super "`super'"
keyword_self "`self'"
keyword_nil "`nil'"
keyword_true "`true'"
keyword_false "`false'"
keyword_and "`and'"
keyword_or "`or'"
keyword_not "`not'"
modifier_if "`if' modifier"
modifier_unless "`unless' modifier"
modifier_while "`while' modifier"
modifier_until "`until' modifier"
modifier_rescue "`rescue' modifier"
keyword_alias "`alias'"
keyword_defined "`defined?'"
keyword_BEGIN "`BEGIN'"
keyword_END "`END'"
keyword__LINE__ "`__LINE__'"
keyword__FILE__ "`__FILE__'"
keyword__ENCODING__ "`__ENCODING__'"
%token <id> tIDENTIFIER "local variable or method"
%token <id> tFID "method"
%token <id> tGVAR "global variable"
%token <id> tIVAR "instance variable"
%token <id> tCONSTANT "constant"
%token <id> tCVAR "class variable"
%token <id> tLABEL
%token <node> tINTEGER "integer literal"
%token <node> tFLOAT "float literal"
%token <node> tRATIONAL "rational literal"
%token <node> tIMAGINARY "imaginary literal"
%token <node> tCHAR "char literal"
%token <node> tNTH_REF "numbered reference"
%token <node> tBACK_REF "back reference"
%token <node> tSTRING_CONTENT "literal content"
%token <num> tREGEXP_END
%type <node> singleton strings string string1 xstring regexp
%type <node> string_contents xstring_contents regexp_contents string_content
%type <node> words symbols symbol_list qwords qsymbols word_list qword_list qsym_list word
%type <node> literal numeric simple_numeric ssym dsym symbol cpath
%type <node> top_compstmt top_stmts top_stmt begin_block
%type <node> bodystmt compstmt stmts stmt_or_begin stmt expr arg primary command command_call method_call
%type <node> expr_value expr_value_do arg_value primary_value fcall rel_expr
%type <node> if_tail opt_else case_body case_args cases opt_rescue exc_list exc_var opt_ensure
%type <node> args call_args opt_call_args
%type <node> paren_args opt_paren_args args_tail opt_args_tail block_args_tail opt_block_args_tail
%type <node> command_args aref_args opt_block_arg block_arg var_ref var_lhs
%type <node> command_rhs arg_rhs
%type <node> command_asgn mrhs mrhs_arg superclass block_call block_command
%type <node> f_block_optarg f_block_opt
%type <node> f_arglist f_args f_arg f_arg_item f_optarg f_marg f_marg_list f_margs f_rest_marg
%type <node> assoc_list assocs assoc undef_list backref string_dvar for_var
%type <node> block_param opt_block_param block_param_def f_opt
%type <node> f_kwarg f_kw f_block_kwarg f_block_kw
%type <node> bv_decls opt_bv_decl bvar
%type <node> lambda f_larglist lambda_body brace_body do_body
%type <node> brace_block cmd_brace_block do_block lhs none fitem
%type <node> mlhs mlhs_head mlhs_basic mlhs_item mlhs_node mlhs_post mlhs_inner
%type <node> p_case_body p_cases p_top_expr p_top_expr_body
%type <node> p_expr p_as p_alt p_expr_basic
%type <node> p_args p_args_head p_args_tail p_args_post p_arg
%type <node> p_value p_primitive p_variable p_var_ref p_const
%type <node> p_kwargs p_kwarg p_kw
%type <id> keyword_variable user_variable sym operation operation2 operation3
%type <id> cname fname op f_rest_arg f_block_arg opt_f_block_arg f_norm_arg f_bad_arg
%type <id> f_kwrest f_label f_arg_asgn call_op call_op2 reswords relop dot_or_colon
%type <id> p_kwrest p_kwnorest
%type <id> f_no_kwarg args_forward
%token END_OF_INPUT 0 "end-of-input"
%token <id> '.'
/* escaped chars, should be ignored otherwise */
%token <id> '\\' "backslash"
%token tSP "escaped space"
%token <id> '\t' "escaped horizontal tab"
%token <id> '\f' "escaped form feed"
%token <id> '\r' "escaped carriage return"
%token <id> '\13' "escaped vertical tab"
%token tUPLUS RUBY_TOKEN(UPLUS) "unary+"
%token tUMINUS RUBY_TOKEN(UMINUS) "unary-"
%token tPOW RUBY_TOKEN(POW) "**"
%token tCMP RUBY_TOKEN(CMP) "<=>"
%token tEQ RUBY_TOKEN(EQ) "=="
%token tEQQ RUBY_TOKEN(EQQ) "==="
%token tNEQ RUBY_TOKEN(NEQ) "!="
%token tGEQ RUBY_TOKEN(GEQ) ">="
%token tLEQ RUBY_TOKEN(LEQ) "<="
%token tANDOP RUBY_TOKEN(ANDOP) "&&"
%token tOROP RUBY_TOKEN(OROP) "||"
%token tMATCH RUBY_TOKEN(MATCH) "=~"
%token tNMATCH RUBY_TOKEN(NMATCH) "!~"
%token tDOT2 RUBY_TOKEN(DOT2) ".."
%token tDOT3 RUBY_TOKEN(DOT3) "..."
%token tBDOT2 RUBY_TOKEN(BDOT2) "(.."
%token tBDOT3 RUBY_TOKEN(BDOT3) "(..."
%token tAREF RUBY_TOKEN(AREF) "[]"
%token tASET RUBY_TOKEN(ASET) "[]="
%token tLSHFT RUBY_TOKEN(LSHFT) "<<"
%token tRSHFT RUBY_TOKEN(RSHFT) ">>"
%token <id> tANDDOT RUBY_TOKEN(ANDDOT) "&."
%token <id> tCOLON2 RUBY_TOKEN(COLON2) "::"
%token <id> tMETHREF RUBY_TOKEN(METHREF) ".:"
%token tCOLON3 ":: at EXPR_BEG"
%token <id> tOP_ASGN "operator-assignment" /* +=, -= etc. */
%token tASSOC "=>"
%token tLPAREN "("
%token tLPAREN_ARG "( arg"
%token tRPAREN ")"
%token tLBRACK "["
%token tLBRACE "{"
%token tLBRACE_ARG "{ arg"
%token tSTAR "*"
%token tDSTAR "**arg"
%token tAMPER "&"
%token tLAMBDA "->"
%token tSYMBEG "symbol literal"
%token tSTRING_BEG "string literal"
%token tXSTRING_BEG "backtick literal"
%token tREGEXP_BEG "regexp literal"
%token tWORDS_BEG "word list"
%token tQWORDS_BEG "verbatim word list"
%token tSYMBOLS_BEG "symbol list"
%token tQSYMBOLS_BEG "verbatim symbol list"
%token tSTRING_END "terminator"
%token tSTRING_DEND "'}'"
%token tSTRING_DBEG tSTRING_DVAR tLAMBEG tLABEL_END
/*
* precedence table
*/
%nonassoc tLOWEST
%nonassoc tLBRACE_ARG
%nonassoc modifier_if modifier_unless modifier_while modifier_until keyword_in
%left keyword_or keyword_and
%right keyword_not
%nonassoc keyword_defined
%right '=' tOP_ASGN
%left modifier_rescue
%right '?' ':'
%nonassoc tDOT2 tDOT3 tBDOT2 tBDOT3
%left tOROP
%left tANDOP
%nonassoc tCMP tEQ tEQQ tNEQ tMATCH tNMATCH
%left '>' tGEQ '<' tLEQ
%left '|' '^'
%left '&'
%left tLSHFT tRSHFT
%left '+' '-'
%left '*' '/' '%'
%right tUMINUS_NUM tUMINUS
%right tPOW
%right '!' '~' tUPLUS
%token tLAST_TOKEN
%%
program : {
SET_LEX_STATE(EXPR_BEG);
local_push(p, ifndef_ripper(1)+0);
}
top_compstmt
{
/*%%%*/
if ($2 && !compile_for_eval) {
NODE *node = $2;
/* last expression should not be void */
if (nd_type(node) == NODE_BLOCK) {
while (node->nd_next) {
node = node->nd_next;
}
node = node->nd_head;
}
node = remove_begin(node);
void_expr(p, node);
}
p->eval_tree = NEW_SCOPE(0, block_append(p, p->eval_tree, $2), &@$);
/*% %*/
/*% ripper[final]: program!($2) %*/
local_pop(p);
}
;
top_compstmt : top_stmts opt_terms
{
$$ = void_stmts(p, $1);
}
;
top_stmts : none
{
/*%%%*/
$$ = NEW_BEGIN(0, &@$);
/*% %*/
/*% ripper: stmts_add!(stmts_new!, void_stmt!) %*/
}
| top_stmt
{
/*%%%*/
$$ = newline_node($1);
/*% %*/
/*% ripper: stmts_add!(stmts_new!, $1) %*/
}
| top_stmts terms top_stmt
{
/*%%%*/
$$ = block_append(p, $1, newline_node($3));
/*% %*/
/*% ripper: stmts_add!($1, $3) %*/
}
| error top_stmt
{
$$ = remove_begin($2);
}
;
top_stmt : stmt
| keyword_BEGIN begin_block
{
$$ = $2;
}
;
begin_block : '{' top_compstmt '}'
{
/*%%%*/
p->eval_tree_begin = block_append(p, p->eval_tree_begin,
NEW_BEGIN($2, &@$));
$$ = NEW_BEGIN(0, &@$);
/*% %*/
/*% ripper: BEGIN!($2) %*/
}
;
bodystmt : compstmt
opt_rescue
k_else {if (!$2) {yyerror1(&@3, "else without rescue is useless");}}
compstmt
opt_ensure
{
/*%%%*/
$$ = new_bodystmt(p, $1, $2, $5, $6, &@$);
/*% %*/
/*% ripper: bodystmt!(escape_Qundef($1), escape_Qundef($2), escape_Qundef($5), escape_Qundef($6)) %*/
}
| compstmt
opt_rescue
opt_ensure
{
/*%%%*/
$$ = new_bodystmt(p, $1, $2, 0, $3, &@$);
/*% %*/
/*% ripper: bodystmt!(escape_Qundef($1), escape_Qundef($2), Qnil, escape_Qundef($3)) %*/
}
;
compstmt : stmts opt_terms
{
$$ = void_stmts(p, $1);
}
;
stmts : none
{
/*%%%*/
$$ = NEW_BEGIN(0, &@$);
/*% %*/
/*% ripper: stmts_add!(stmts_new!, void_stmt!) %*/
}
| stmt_or_begin
{
/*%%%*/
$$ = newline_node($1);
/*% %*/
/*% ripper: stmts_add!(stmts_new!, $1) %*/
}
| stmts terms stmt_or_begin
{
/*%%%*/
$$ = block_append(p, $1, newline_node($3));
/*% %*/
/*% ripper: stmts_add!($1, $3) %*/
}
| error stmt
{
$$ = remove_begin($2);
}
;
stmt_or_begin : stmt
{
$$ = $1;
}
| keyword_BEGIN
{
yyerror1(&@1, "BEGIN is permitted only at toplevel");
}
begin_block
{
$$ = $3;
}
;
stmt : keyword_alias fitem {SET_LEX_STATE(EXPR_FNAME|EXPR_FITEM);} fitem
{
/*%%%*/
$$ = NEW_ALIAS($2, $4, &@$);
/*% %*/
/*% ripper: alias!($2, $4) %*/
}
| keyword_alias tGVAR tGVAR
{
/*%%%*/
$$ = NEW_VALIAS($2, $3, &@$);
/*% %*/
/*% ripper: var_alias!($2, $3) %*/
}
| keyword_alias tGVAR tBACK_REF
{
/*%%%*/
char buf[2];
buf[0] = '$';
buf[1] = (char)$3->nd_nth;
$$ = NEW_VALIAS($2, rb_intern2(buf, 2), &@$);
/*% %*/
/*% ripper: var_alias!($2, $3) %*/
}
| keyword_alias tGVAR tNTH_REF
{
/*%%%*/
yyerror1(&@3, "can't make alias for the number variables");
$$ = NEW_BEGIN(0, &@$);
/*% %*/
/*% ripper[error]: alias_error!(var_alias!($2, $3)) %*/
}
| keyword_undef undef_list
{
/*%%%*/
$$ = $2;
/*% %*/
/*% ripper: undef!($2) %*/
}
| stmt modifier_if expr_value
{
/*%%%*/
$$ = new_if(p, $3, remove_begin($1), 0, &@$);
fixpos($$, $3);
/*% %*/
/*% ripper: if_mod!($3, $1) %*/
}
| stmt modifier_unless expr_value
{
/*%%%*/
$$ = new_unless(p, $3, remove_begin($1), 0, &@$);
fixpos($$, $3);
/*% %*/
/*% ripper: unless_mod!($3, $1) %*/
}
| stmt modifier_while expr_value
{
/*%%%*/
if ($1 && nd_type($1) == NODE_BEGIN) {
$$ = NEW_WHILE(cond(p, $3, &@3), $1->nd_body, 0, &@$);
}
else {
$$ = NEW_WHILE(cond(p, $3, &@3), $1, 1, &@$);
}
/*% %*/
/*% ripper: while_mod!($3, $1) %*/
}
| stmt modifier_until expr_value
{
/*%%%*/
if ($1 && nd_type($1) == NODE_BEGIN) {
$$ = NEW_UNTIL(cond(p, $3, &@3), $1->nd_body, 0, &@$);
}
else {
$$ = NEW_UNTIL(cond(p, $3, &@3), $1, 1, &@$);
}
/*% %*/
/*% ripper: until_mod!($3, $1) %*/
}
| stmt modifier_rescue stmt
{
/*%%%*/
NODE *resq;
YYLTYPE loc = code_loc_gen(&@2, &@3);
resq = NEW_RESBODY(0, remove_begin($3), 0, &loc);
$$ = NEW_RESCUE(remove_begin($1), resq, 0, &@$);
/*% %*/
/*% ripper: rescue_mod!($1, $3) %*/
}
| keyword_END '{' compstmt '}'
{
if (p->in_def) {
rb_warn0("END in method; use at_exit");
}
/*%%%*/
{
NODE *scope = NEW_NODE(
NODE_SCOPE, 0 /* tbl */, $3 /* body */, 0 /* args */, &@$);
$$ = NEW_POSTEXE(scope, &@$);
}
/*% %*/
/*% ripper: END!($3) %*/
}
| command_asgn
| mlhs '=' command_call
{
/*%%%*/
value_expr($3);
$$ = node_assign(p, $1, $3, &@$);
/*% %*/
/*% ripper: massign!($1, $3) %*/
}
| lhs '=' mrhs
{
/*%%%*/
value_expr($3);
$$ = node_assign(p, $1, $3, &@$);
/*% %*/
/*% ripper: assign!($1, $3) %*/
}
| mlhs '=' mrhs_arg modifier_rescue stmt
{
/*%%%*/
YYLTYPE loc = code_loc_gen(&@4, &@5);
value_expr($3);
$$ = node_assign(p, $1, NEW_RESCUE($3, NEW_RESBODY(0, remove_begin($5), 0, &loc), 0, &@$), &@$);
/*% %*/
/*% ripper: massign!($1, rescue_mod!($3, $5)) %*/
}
| mlhs '=' mrhs_arg
{
/*%%%*/
$$ = node_assign(p, $1, $3, &@$);
/*% %*/
/*% ripper: massign!($1, $3) %*/
}
| expr
;
command_asgn : lhs '=' command_rhs
{
/*%%%*/
value_expr($3);
$$ = node_assign(p, $1, $3, &@$);
/*% %*/
/*% ripper: assign!($1, $3) %*/
}
| var_lhs tOP_ASGN command_rhs
{
/*%%%*/
value_expr($3);
$$ = new_op_assign(p, $1, $2, $3, &@$);
/*% %*/
/*% ripper: opassign!($1, $2, $3) %*/
}
| primary_value '[' opt_call_args rbracket tOP_ASGN command_rhs
{
/*%%%*/
value_expr($6);
$$ = new_ary_op_assign(p, $1, $3, $5, $6, &@3, &@$);
/*% %*/
/*% ripper: opassign!(aref_field!($1, escape_Qundef($3)), $5, $6) %*/
}
| primary_value call_op tIDENTIFIER tOP_ASGN command_rhs
{
/*%%%*/
value_expr($5);
$$ = new_attr_op_assign(p, $1, $2, $3, $4, $5, &@$);
/*% %*/
/*% ripper: opassign!(field!($1, $2, $3), $4, $5) %*/
}
| primary_value call_op tCONSTANT tOP_ASGN command_rhs
{
/*%%%*/
value_expr($5);
$$ = new_attr_op_assign(p, $1, $2, $3, $4, $5, &@$);
/*% %*/
/*% ripper: opassign!(field!($1, $2, $3), $4, $5) %*/
}
| primary_value tCOLON2 tCONSTANT tOP_ASGN command_rhs
{
/*%%%*/
YYLTYPE loc = code_loc_gen(&@1, &@3);
$$ = new_const_op_assign(p, NEW_COLON2($1, $3, &loc), $4, $5, &@$);
/*% %*/
/*% ripper: opassign!(const_path_field!($1, $3), $4, $5) %*/
}
| primary_value tCOLON2 tIDENTIFIER tOP_ASGN command_rhs
{
/*%%%*/
value_expr($5);
$$ = new_attr_op_assign(p, $1, ID2VAL(idCOLON2), $3, $4, $5, &@$);
/*% %*/
/*% ripper: opassign!(field!($1, ID2VAL(idCOLON2), $3), $4, $5) %*/
}
| backref tOP_ASGN command_rhs
{
/*%%%*/
rb_backref_error(p, $1);
$$ = NEW_BEGIN(0, &@$);
/*% %*/
/*% ripper[error]: assign_error!(assign!(var_field(p, $1), $3)) %*/
}
;
command_rhs : command_call %prec tOP_ASGN
{
value_expr($1);
$$ = $1;
}
| command_call modifier_rescue stmt
{
/*%%%*/
YYLTYPE loc = code_loc_gen(&@2, &@3);
value_expr($1);
$$ = NEW_RESCUE($1, NEW_RESBODY(0, remove_begin($3), 0, &loc), 0, &@$);
/*% %*/
/*% ripper: rescue_mod!($1, $3) %*/
}
| command_asgn
;
expr : command_call
| expr keyword_and expr
{
$$ = logop(p, idAND, $1, $3, &@2, &@$);
}
| expr keyword_or expr
{
$$ = logop(p, idOR, $1, $3, &@2, &@$);
}
| keyword_not opt_nl expr
{
$$ = call_uni_op(p, method_cond(p, $3, &@3), METHOD_NOT, &@1, &@$);
}
| '!' command_call
{
$$ = call_uni_op(p, method_cond(p, $2, &@2), '!', &@1, &@$);
}
| arg keyword_in
{
value_expr($1);
SET_LEX_STATE(EXPR_BEG|EXPR_LABEL);
p->command_start = FALSE;
$<num>$ = p->in_kwarg;
p->in_kwarg = 1;
}
{
$<tbl>$ = p->pvtbl;
p->pvtbl = st_init_numtable();
}
p_expr
{
st_free_table(p->pvtbl);
p->pvtbl = $<tbl>4;
}
{
p->in_kwarg = !!$<num>3;
/*%%%*/
$$ = NEW_CASE3($1, NEW_IN($5, NEW_TRUE(&@5), NEW_FALSE(&@5), &@5), &@$);
rb_warn0L(nd_line($$), "Pattern matching is experimental, and the behavior may change in future versions of Ruby!");
/*% %*/
/*% ripper: case!($1, in!($5, Qnil, Qnil)) %*/
}
| arg %prec tLBRACE_ARG
;
expr_value : expr
{
value_expr($1);
$$ = $1;
}
;
expr_value_do : {COND_PUSH(1);} expr_value do {COND_POP();}
{
$$ = $2;
}
command_call : command
| block_command
;
block_command : block_call
| block_call call_op2 operation2 command_args
{
/*%%%*/
$$ = new_qcall(p, $2, $1, $3, $4, &@3, &@$);
/*% %*/
/*% ripper: method_add_arg!(call!($1, $2, $3), $4) %*/
}
;
cmd_brace_block : tLBRACE_ARG brace_body '}'
{
$$ = $2;
/*%%%*/
$$->nd_body->nd_loc = code_loc_gen(&@1, &@3);
nd_set_line($$, @1.end_pos.lineno);
/*% %*/
}
;
fcall : operation
{
/*%%%*/
$$ = NEW_FCALL($1, 0, &@$);
nd_set_line($$, p->tokline);
/*% %*/
/*% ripper: $1 %*/
}
;
command : fcall command_args %prec tLOWEST
{
/*%%%*/
$1->nd_args = $2;
nd_set_last_loc($1, @2.end_pos);
$$ = $1;
/*% %*/
/*% ripper: command!($1, $2) %*/
}
| fcall command_args cmd_brace_block
{
/*%%%*/
block_dup_check(p, $2, $3);
$1->nd_args = $2;
$$ = method_add_block(p, $1, $3, &@$);
fixpos($$, $1);
nd_set_last_loc($1, @2.end_pos);
/*% %*/
/*% ripper: method_add_block!(command!($1, $2), $3) %*/
}
| primary_value call_op operation2 command_args %prec tLOWEST
{
/*%%%*/
$$ = new_command_qcall(p, $2, $1, $3, $4, Qnull, &@3, &@$);
/*% %*/
/*% ripper: command_call!($1, $2, $3, $4) %*/
}
| primary_value call_op operation2 command_args cmd_brace_block
{
/*%%%*/
$$ = new_command_qcall(p, $2, $1, $3, $4, $5, &@3, &@$);
/*% %*/
/*% ripper: method_add_block!(command_call!($1, $2, $3, $4), $5) %*/
}
| primary_value tCOLON2 operation2 command_args %prec tLOWEST
{
/*%%%*/
$$ = new_command_qcall(p, ID2VAL(idCOLON2), $1, $3, $4, Qnull, &@3, &@$);
/*% %*/
/*% ripper: command_call!($1, ID2VAL(idCOLON2), $3, $4) %*/
}
| primary_value tCOLON2 operation2 command_args cmd_brace_block
{
/*%%%*/
$$ = new_command_qcall(p, ID2VAL(idCOLON2), $1, $3, $4, $5, &@3, &@$);
/*% %*/
/*% ripper: method_add_block!(command_call!($1, ID2VAL(idCOLON2), $3, $4), $5) %*/
}
| keyword_super command_args
{
/*%%%*/
$$ = NEW_SUPER($2, &@$);
fixpos($$, $2);
/*% %*/
/*% ripper: super!($2) %*/
}
| keyword_yield command_args
{
/*%%%*/
$$ = new_yield(p, $2, &@$);
fixpos($$, $2);
/*% %*/
/*% ripper: yield!($2) %*/
}
| k_return call_args
{
/*%%%*/
$$ = NEW_RETURN(ret_args(p, $2), &@$);
/*% %*/
/*% ripper: return!($2) %*/
}
| keyword_break call_args
{
/*%%%*/
$$ = NEW_BREAK(ret_args(p, $2), &@$);
/*% %*/
/*% ripper: break!($2) %*/
}
| keyword_next call_args
{
/*%%%*/
$$ = NEW_NEXT(ret_args(p, $2), &@$);
/*% %*/
/*% ripper: next!($2) %*/
}
;
mlhs : mlhs_basic
| tLPAREN mlhs_inner rparen
{
/*%%%*/
$$ = $2;
/*% %*/
/*% ripper: mlhs_paren!($2) %*/
}
;
mlhs_inner : mlhs_basic
| tLPAREN mlhs_inner rparen
{
/*%%%*/
$$ = NEW_MASGN(NEW_LIST($2, &@$), 0, &@$);
/*% %*/
/*% ripper: mlhs_paren!($2) %*/
}
;
mlhs_basic : mlhs_head
{
/*%%%*/
$$ = NEW_MASGN($1, 0, &@$);
/*% %*/
/*% ripper: $1 %*/
}
| mlhs_head mlhs_item
{
/*%%%*/
$$ = NEW_MASGN(list_append(p, $1,$2), 0, &@$);
/*% %*/
/*% ripper: mlhs_add!($1, $2) %*/
}
| mlhs_head tSTAR mlhs_node
{
/*%%%*/
$$ = NEW_MASGN($1, $3, &@$);
/*% %*/
/*% ripper: mlhs_add_star!($1, $3) %*/
}
| mlhs_head tSTAR mlhs_node ',' mlhs_post
{
/*%%%*/
$$ = NEW_MASGN($1, NEW_POSTARG($3,$5,&@$), &@$);
/*% %*/
/*% ripper: mlhs_add_post!(mlhs_add_star!($1, $3), $5) %*/
}
| mlhs_head tSTAR
{
/*%%%*/
$$ = NEW_MASGN($1, NODE_SPECIAL_NO_NAME_REST, &@$);
/*% %*/
/*% ripper: mlhs_add_star!($1, Qnil) %*/
}
| mlhs_head tSTAR ',' mlhs_post
{
/*%%%*/
$$ = NEW_MASGN($1, NEW_POSTARG(NODE_SPECIAL_NO_NAME_REST, $4, &@$), &@$);
/*% %*/
/*% ripper: mlhs_add_post!(mlhs_add_star!($1, Qnil), $4) %*/
}
| tSTAR mlhs_node
{
/*%%%*/
$$ = NEW_MASGN(0, $2, &@$);
/*% %*/
/*% ripper: mlhs_add_star!(mlhs_new!, $2) %*/
}
| tSTAR mlhs_node ',' mlhs_post
{
/*%%%*/
$$ = NEW_MASGN(0, NEW_POSTARG($2,$4,&@$), &@$);
/*% %*/
/*% ripper: mlhs_add_post!(mlhs_add_star!(mlhs_new!, $2), $4) %*/
}
| tSTAR
{
/*%%%*/
$$ = NEW_MASGN(0, NODE_SPECIAL_NO_NAME_REST, &@$);
/*% %*/
/*% ripper: mlhs_add_star!(mlhs_new!, Qnil) %*/
}
| tSTAR ',' mlhs_post
{
/*%%%*/
$$ = NEW_MASGN(0, NEW_POSTARG(NODE_SPECIAL_NO_NAME_REST, $3, &@$), &@$);
/*% %*/
/*% ripper: mlhs_add_post!(mlhs_add_star!(mlhs_new!, Qnil), $3) %*/
}
;
mlhs_item : mlhs_node
| tLPAREN mlhs_inner rparen
{
/*%%%*/
$$ = $2;
/*% %*/
/*% ripper: mlhs_paren!($2) %*/
}
;
mlhs_head : mlhs_item ','
{
/*%%%*/
$$ = NEW_LIST($1, &@1);
/*% %*/
/*% ripper: mlhs_add!(mlhs_new!, $1) %*/
}
| mlhs_head mlhs_item ','
{
/*%%%*/
$$ = list_append(p, $1, $2);
/*% %*/
/*% ripper: mlhs_add!($1, $2) %*/
}
;
mlhs_post : mlhs_item
{
/*%%%*/
$$ = NEW_LIST($1, &@$);
/*% %*/
/*% ripper: mlhs_add!(mlhs_new!, $1) %*/
}
| mlhs_post ',' mlhs_item
{
/*%%%*/
$$ = list_append(p, $1, $3);
/*% %*/
/*% ripper: mlhs_add!($1, $3) %*/
}
;
mlhs_node : user_variable
{
/*%%%*/
$$ = assignable(p, $1, 0, &@$);
/*% %*/
/*% ripper: assignable(p, var_field(p, $1)) %*/
}
| keyword_variable
{
/*%%%*/
$$ = assignable(p, $1, 0, &@$);
/*% %*/
/*% ripper: assignable(p, var_field(p, $1)) %*/
}
| primary_value '[' opt_call_args rbracket
{
/*%%%*/
$$ = aryset(p, $1, $3, &@$);
/*% %*/
/*% ripper: aref_field!($1, escape_Qundef($3)) %*/
}
| primary_value call_op tIDENTIFIER
{
if ($2 == tANDDOT) {
yyerror1(&@2, "&. inside multiple assignment destination");
}
/*%%%*/
$$ = attrset(p, $1, $2, $3, &@$);
/*% %*/
/*% ripper: field!($1, $2, $3) %*/
}
| primary_value tCOLON2 tIDENTIFIER
{
/*%%%*/
$$ = attrset(p, $1, idCOLON2, $3, &@$);
/*% %*/
/*% ripper: const_path_field!($1, $3) %*/
}
| primary_value call_op tCONSTANT
{
if ($2 == tANDDOT) {
yyerror1(&@2, "&. inside multiple assignment destination");
}
/*%%%*/
$$ = attrset(p, $1, $2, $3, &@$);
/*% %*/
/*% ripper: field!($1, $2, $3) %*/
}
| primary_value tCOLON2 tCONSTANT
{
/*%%%*/
$$ = const_decl(p, NEW_COLON2($1, $3, &@$), &@$);
/*% %*/
/*% ripper: const_decl(p, const_path_field!($1, $3)) %*/
}
| tCOLON3 tCONSTANT
{
/*%%%*/
$$ = const_decl(p, NEW_COLON3($2, &@$), &@$);
/*% %*/
/*% ripper: const_decl(p, top_const_field!($2)) %*/
}
| backref
{
/*%%%*/
rb_backref_error(p, $1);
$$ = NEW_BEGIN(0, &@$);
/*% %*/
/*% ripper[error]: assign_error!(var_field(p, $1)) %*/
}
;
lhs : user_variable
{
/*%%%*/
$$ = assignable(p, $1, 0, &@$);
/*% %*/
/*% ripper: assignable(p, var_field(p, $1)) %*/
}
| keyword_variable
{
/*%%%*/
$$ = assignable(p, $1, 0, &@$);
/*% %*/
/*% ripper: assignable(p, var_field(p, $1)) %*/
}
| primary_value '[' opt_call_args rbracket
{
/*%%%*/
$$ = aryset(p, $1, $3, &@$);
/*% %*/
/*% ripper: aref_field!($1, escape_Qundef($3)) %*/
}
| primary_value call_op tIDENTIFIER
{
/*%%%*/
$$ = attrset(p, $1, $2, $3, &@$);
/*% %*/
/*% ripper: field!($1, $2, $3) %*/
}
| primary_value tCOLON2 tIDENTIFIER
{
/*%%%*/
$$ = attrset(p, $1, idCOLON2, $3, &@$);
/*% %*/
/*% ripper: field!($1, ID2VAL(idCOLON2), $3) %*/
}
| primary_value call_op tCONSTANT
{
/*%%%*/
$$ = attrset(p, $1, $2, $3, &@$);
/*% %*/
/*% ripper: field!($1, $2, $3) %*/
}
| primary_value tCOLON2 tCONSTANT
{
/*%%%*/
$$ = const_decl(p, NEW_COLON2($1, $3, &@$), &@$);
/*% %*/
/*% ripper: const_decl(p, const_path_field!($1, $3)) %*/
}
| tCOLON3 tCONSTANT
{
/*%%%*/
$$ = const_decl(p, NEW_COLON3($2, &@$), &@$);
/*% %*/
/*% ripper: const_decl(p, top_const_field!($2)) %*/
}
| backref
{
/*%%%*/
rb_backref_error(p, $1);
$$ = NEW_BEGIN(0, &@$);
/*% %*/
/*% ripper[error]: assign_error!(var_field(p, $1)) %*/
}
;
cname : tIDENTIFIER
{
/*%%%*/
yyerror1(&@1, "class/module name must be CONSTANT");
/*% %*/
/*% ripper[error]: class_name_error!($1) %*/
}
| tCONSTANT
;
cpath : tCOLON3 cname
{
/*%%%*/
$$ = NEW_COLON3($2, &@$);
/*% %*/
/*% ripper: top_const_ref!($2) %*/
}
| cname
{
/*%%%*/
$$ = NEW_COLON2(0, $$, &@$);
/*% %*/
/*% ripper: const_ref!($1) %*/
}
| primary_value tCOLON2 cname
{
/*%%%*/
$$ = NEW_COLON2($1, $3, &@$);
/*% %*/
/*% ripper: const_path_ref!($1, $3) %*/
}
;
fname : tIDENTIFIER
| tCONSTANT
| tFID
| op
{
SET_LEX_STATE(EXPR_ENDFN);
$$ = $1;
}
| reswords
{
SET_LEX_STATE(EXPR_ENDFN);
$$ = $1;
}
;
fitem : fname
{
/*%%%*/
$$ = NEW_LIT(ID2SYM($1), &@$);
/*% %*/
/*% ripper: symbol_literal!($1) %*/
}
| symbol
;
undef_list : fitem
{
/*%%%*/
$$ = NEW_UNDEF($1, &@$);
/*% %*/
/*% ripper: rb_ary_new3(1, get_value($1)) %*/
}
| undef_list ',' {SET_LEX_STATE(EXPR_FNAME|EXPR_FITEM);} fitem
{
/*%%%*/
NODE *undef = NEW_UNDEF($4, &@4);
$$ = block_append(p, $1, undef);
/*% %*/
/*% ripper: rb_ary_push($1, get_value($4)) %*/
}
;
op : '|' { ifndef_ripper($$ = '|'); }
| '^' { ifndef_ripper($$ = '^'); }
| '&' { ifndef_ripper($$ = '&'); }
| tCMP { ifndef_ripper($$ = tCMP); }
| tEQ { ifndef_ripper($$ = tEQ); }
| tEQQ { ifndef_ripper($$ = tEQQ); }
| tMATCH { ifndef_ripper($$ = tMATCH); }
| tNMATCH { ifndef_ripper($$ = tNMATCH); }
| '>' { ifndef_ripper($$ = '>'); }
| tGEQ { ifndef_ripper($$ = tGEQ); }
| '<' { ifndef_ripper($$ = '<'); }
| tLEQ { ifndef_ripper($$ = tLEQ); }
| tNEQ { ifndef_ripper($$ = tNEQ); }
| tLSHFT { ifndef_ripper($$ = tLSHFT); }
| tRSHFT { ifndef_ripper($$ = tRSHFT); }
| '+' { ifndef_ripper($$ = '+'); }
| '-' { ifndef_ripper($$ = '-'); }
| '*' { ifndef_ripper($$ = '*'); }
| tSTAR { ifndef_ripper($$ = '*'); }
| '/' { ifndef_ripper($$ = '/'); }
| '%' { ifndef_ripper($$ = '%'); }
| tPOW { ifndef_ripper($$ = tPOW); }
| tDSTAR { ifndef_ripper($$ = tDSTAR); }
| '!' { ifndef_ripper($$ = '!'); }
| '~' { ifndef_ripper($$ = '~'); }
| tUPLUS { ifndef_ripper($$ = tUPLUS); }
| tUMINUS { ifndef_ripper($$ = tUMINUS); }
| tAREF { ifndef_ripper($$ = tAREF); }
| tASET { ifndef_ripper($$ = tASET); }
| '`' { ifndef_ripper($$ = '`'); }
;
reswords : keyword__LINE__ | keyword__FILE__ | keyword__ENCODING__
| keyword_BEGIN | keyword_END
| keyword_alias | keyword_and | keyword_begin
| keyword_break | keyword_case | keyword_class | keyword_def
| keyword_defined | keyword_do | keyword_else | keyword_elsif
| keyword_end | keyword_ensure | keyword_false
| keyword_for | keyword_in | keyword_module | keyword_next
| keyword_nil | keyword_not | keyword_or | keyword_redo
| keyword_rescue | keyword_retry | keyword_return | keyword_self
| keyword_super | keyword_then | keyword_true | keyword_undef
| keyword_when | keyword_yield | keyword_if | keyword_unless
| keyword_while | keyword_until
;
arg : lhs '=' arg_rhs
{
/*%%%*/
$$ = node_assign(p, $1, $3, &@$);
/*% %*/
/*% ripper: assign!($1, $3) %*/
}
| var_lhs tOP_ASGN arg_rhs
{
/*%%%*/
$$ = new_op_assign(p, $1, $2, $3, &@$);
/*% %*/
/*% ripper: opassign!($1, $2, $3) %*/
}
| primary_value '[' opt_call_args rbracket tOP_ASGN arg_rhs
{
/*%%%*/
value_expr($6);
$$ = new_ary_op_assign(p, $1, $3, $5, $6, &@3, &@$);
/*% %*/
/*% ripper: opassign!(aref_field!($1, escape_Qundef($3)), $5, $6) %*/
}
| primary_value call_op tIDENTIFIER tOP_ASGN arg_rhs
{
/*%%%*/
value_expr($5);
$$ = new_attr_op_assign(p, $1, $2, $3, $4, $5, &@$);
/*% %*/
/*% ripper: opassign!(field!($1, $2, $3), $4, $5) %*/
}
| primary_value call_op tCONSTANT tOP_ASGN arg_rhs
{
/*%%%*/
value_expr($5);
$$ = new_attr_op_assign(p, $1, $2, $3, $4, $5, &@$);
/*% %*/
/*% ripper: opassign!(field!($1, $2, $3), $4, $5) %*/
}
| primary_value tCOLON2 tIDENTIFIER tOP_ASGN arg_rhs
{
/*%%%*/
value_expr($5);
$$ = new_attr_op_assign(p, $1, ID2VAL(idCOLON2), $3, $4, $5, &@$);
/*% %*/
/*% ripper: opassign!(field!($1, ID2VAL(idCOLON2), $3), $4, $5) %*/
}
| primary_value tCOLON2 tCONSTANT tOP_ASGN arg_rhs
{
/*%%%*/
YYLTYPE loc = code_loc_gen(&@1, &@3);
$$ = new_const_op_assign(p, NEW_COLON2($1, $3, &loc), $4, $5, &@$);
/*% %*/
/*% ripper: opassign!(const_path_field!($1, $3), $4, $5) %*/
}
| tCOLON3 tCONSTANT tOP_ASGN arg_rhs
{
/*%%%*/
$$ = new_const_op_assign(p, NEW_COLON3($2, &@$), $3, $4, &@$);
/*% %*/
/*% ripper: opassign!(top_const_field!($2), $3, $4) %*/
}
| backref tOP_ASGN arg_rhs
{
/*%%%*/
rb_backref_error(p, $1);
$$ = NEW_BEGIN(0, &@$);
/*% %*/
/*% ripper[error]: assign_error!(opassign!(var_field(p, $1), $2, $3)) %*/
}
| arg tDOT2 arg
{
/*%%%*/
value_expr($1);
value_expr($3);
$$ = NEW_DOT2($1, $3, &@$);
/*% %*/
/*% ripper: dot2!($1, $3) %*/
}
| arg tDOT3 arg
{
/*%%%*/
value_expr($1);
value_expr($3);
$$ = NEW_DOT3($1, $3, &@$);
/*% %*/
/*% ripper: dot3!($1, $3) %*/
}
| arg tDOT2
{
/*%%%*/
YYLTYPE loc;
loc.beg_pos = @2.end_pos;
loc.end_pos = @2.end_pos;
value_expr($1);
$$ = NEW_DOT2($1, new_nil(&loc), &@$);
/*% %*/
/*% ripper: dot2!($1, Qnil) %*/
}
| arg tDOT3
{
/*%%%*/
YYLTYPE loc;
loc.beg_pos = @2.end_pos;
loc.end_pos = @2.end_pos;
value_expr($1);
$$ = NEW_DOT3($1, new_nil(&loc), &@$);
/*% %*/
/*% ripper: dot3!($1, Qnil) %*/
}
| tBDOT2 arg
{
/*%%%*/
YYLTYPE loc;
loc.beg_pos = @1.beg_pos;
loc.end_pos = @1.beg_pos;
value_expr($2);
$$ = NEW_DOT2(new_nil(&loc), $2, &@$);
/*% %*/
/*% ripper: dot2!(Qnil, $2) %*/
}
| tBDOT3 arg
{
/*%%%*/
YYLTYPE loc;
loc.beg_pos = @1.beg_pos;
loc.end_pos = @1.beg_pos;
value_expr($2);
$$ = NEW_DOT3(new_nil(&loc), $2, &@$);
/*% %*/
/*% ripper: dot3!(Qnil, $2) %*/
}
| arg '+' arg
{
$$ = call_bin_op(p, $1, '+', $3, &@2, &@$);
}
| arg '-' arg
{
$$ = call_bin_op(p, $1, '-', $3, &@2, &@$);
}
| arg '*' arg
{
$$ = call_bin_op(p, $1, '*', $3, &@2, &@$);
}
| arg '/' arg
{
$$ = call_bin_op(p, $1, '/', $3, &@2, &@$);
}
| arg '%' arg
{
$$ = call_bin_op(p, $1, '%', $3, &@2, &@$);
}
| arg tPOW arg
{
$$ = call_bin_op(p, $1, idPow, $3, &@2, &@$);
}
| tUMINUS_NUM simple_numeric tPOW arg
{
$$ = call_uni_op(p, call_bin_op(p, $2, idPow, $4, &@2, &@$), idUMinus, &@1, &@$);
}
| tUPLUS arg
{
$$ = call_uni_op(p, $2, idUPlus, &@1, &@$);
}
| tUMINUS arg
{
$$ = call_uni_op(p, $2, idUMinus, &@1, &@$);
}
| arg '|' arg
{
$$ = call_bin_op(p, $1, '|', $3, &@2, &@$);
}
| arg '^' arg
{
$$ = call_bin_op(p, $1, '^', $3, &@2, &@$);
}
| arg '&' arg
{
$$ = call_bin_op(p, $1, '&', $3, &@2, &@$);
}
| arg tCMP arg
{
$$ = call_bin_op(p, $1, idCmp, $3, &@2, &@$);
}
| rel_expr %prec tCMP
| arg tEQ arg
{
$$ = call_bin_op(p, $1, idEq, $3, &@2, &@$);
}
| arg tEQQ arg
{
$$ = call_bin_op(p, $1, idEqq, $3, &@2, &@$);
}
| arg tNEQ arg
{
$$ = call_bin_op(p, $1, idNeq, $3, &@2, &@$);
}
| arg tMATCH arg
{
$$ = match_op(p, $1, $3, &@2, &@$);
}
| arg tNMATCH arg
{
$$ = call_bin_op(p, $1, idNeqTilde, $3, &@2, &@$);
}
| '!' arg
{
$$ = call_uni_op(p, method_cond(p, $2, &@2), '!', &@1, &@$);
}
| '~' arg
{
$$ = call_uni_op(p, $2, '~', &@1, &@$);
}
| arg tLSHFT arg
{
$$ = call_bin_op(p, $1, idLTLT, $3, &@2, &@$);
}
| arg tRSHFT arg
{
$$ = call_bin_op(p, $1, idGTGT, $3, &@2, &@$);
}
| arg tANDOP arg
{
$$ = logop(p, idANDOP, $1, $3, &@2, &@$);
}
| arg tOROP arg
{
$$ = logop(p, idOROP, $1, $3, &@2, &@$);
}
| keyword_defined opt_nl {p->in_defined = 1;} arg
{
p->in_defined = 0;
$$ = new_defined(p, $4, &@$);
}
| arg '?' arg opt_nl ':' arg
{
/*%%%*/
value_expr($1);
$$ = new_if(p, $1, $3, $6, &@$);
fixpos($$, $1);
/*% %*/
/*% ripper: ifop!($1, $3, $6) %*/
}
| primary
{
$$ = $1;
}
;
relop : '>' {$$ = '>';}
| '<' {$$ = '<';}
| tGEQ {$$ = idGE;}
| tLEQ {$$ = idLE;}
;
rel_expr : arg relop arg %prec '>'
{
$$ = call_bin_op(p, $1, $2, $3, &@2, &@$);
}
| rel_expr relop arg %prec '>'
{
rb_warning1("comparison '%s' after comparison", WARN_ID($2));
$$ = call_bin_op(p, $1, $2, $3, &@2, &@$);
}
;
arg_value : arg
{
value_expr($1);
$$ = $1;
}
;
aref_args : none
| args trailer
{
$$ = $1;
}
| args ',' assocs trailer
{
/*%%%*/
$$ = $3 ? arg_append(p, $1, new_hash(p, $3, &@3), &@$) : $1;
/*% %*/
/*% ripper: args_add!($1, bare_assoc_hash!($3)) %*/
}
| assocs trailer
{
/*%%%*/
$$ = $1 ? NEW_LIST(new_hash(p, $1, &@1), &@$) : 0;
/*% %*/
/*% ripper: args_add!(args_new!, bare_assoc_hash!($1)) %*/
}
;
arg_rhs : arg %prec tOP_ASGN
{
value_expr($1);
$$ = $1;
}
| arg modifier_rescue arg
{
/*%%%*/
YYLTYPE loc = code_loc_gen(&@2, &@3);
value_expr($1);
$$ = NEW_RESCUE($1, NEW_RESBODY(0, remove_begin($3), 0, &loc), 0, &@$);
/*% %*/
/*% ripper: rescue_mod!($1, $3) %*/
}
;
paren_args : '(' opt_call_args rparen
{
/*%%%*/
$$ = $2;
/*% %*/
/*% ripper: arg_paren!(escape_Qundef($2)) %*/
}
| '(' args_forward rparen
{
if (!local_id(p, idFWD_REST) ||
#if idFWD_KWREST
!local_id(p, idFWD_KWREST) ||
#endif
!local_id(p, idFWD_BLOCK)) {
compile_error(p, "unexpected ...");
$$ = Qnone;
}
else {
/*%%%*/
NODE *splat = NEW_SPLAT(NEW_LVAR(idFWD_REST, &@2), &@2);
#if idFWD_KWREST
NODE *kwrest = list_append(p, NEW_LIST(0, &@2), NEW_LVAR(idFWD_KWREST, &@2));
#endif
NODE *block = NEW_BLOCK_PASS(NEW_LVAR(idFWD_BLOCK, &@2), &@2);
#if idFWD_KWREST
$$ = arg_append(p, splat, new_hash(p, kwrest, &@2), &@2);
#else
$$ = splat;
#endif
$$ = arg_blk_pass($$, block);
/*% %*/
/*% ripper: arg_paren!($2) %*/
}
}
;
opt_paren_args : none
| paren_args
;
opt_call_args : none
| call_args
| args ','
{
$$ = $1;
}
| args ',' assocs ','
{
/*%%%*/
$$ = $3 ? arg_append(p, $1, new_hash(p, $3, &@3), &@$) : $1;
/*% %*/
/*% ripper: args_add!($1, bare_assoc_hash!($3)) %*/
}
| assocs ','
{
/*%%%*/
$$ = $1 ? NEW_LIST(new_hash(p, $1, &@1), &@1) : 0;
/*% %*/
/*% ripper: args_add!(args_new!, bare_assoc_hash!($1)) %*/
}
;
call_args : command
{
/*%%%*/
value_expr($1);
$$ = NEW_LIST($1, &@$);
/*% %*/
/*% ripper: args_add!(args_new!, $1) %*/
}
| args opt_block_arg
{
/*%%%*/
$$ = arg_blk_pass($1, $2);
/*% %*/
/*% ripper: args_add_block!($1, $2) %*/
}
| assocs opt_block_arg
{
/*%%%*/
$$ = $1 ? NEW_LIST(new_hash(p, $1, &@1), &@1) : 0;
$$ = arg_blk_pass($$, $2);
/*% %*/
/*% ripper: args_add_block!(args_add!(args_new!, bare_assoc_hash!($1)), $2) %*/
}
| args ',' assocs opt_block_arg
{
/*%%%*/
$$ = $3 ? arg_append(p, $1, new_hash(p, $3, &@3), &@$) : $1;
$$ = arg_blk_pass($$, $4);
/*% %*/
/*% ripper: args_add_block!(args_add!($1, bare_assoc_hash!($3)), $4) %*/
}
| block_arg
/*% ripper[brace]: args_add_block!(args_new!, $1) %*/
;
command_args : {
/* If call_args starts with a open paren '(' or '[',
* look-ahead reading of the letters calls CMDARG_PUSH(0),
* but the push must be done after CMDARG_PUSH(1).
* So this code makes them consistent by first cancelling
* the premature CMDARG_PUSH(0), doing CMDARG_PUSH(1),
* and finally redoing CMDARG_PUSH(0).
*/
int lookahead = 0;
switch (yychar) {
case '(': case tLPAREN: case tLPAREN_ARG: case '[': case tLBRACK:
lookahead = 1;
}
if (lookahead) CMDARG_POP();
CMDARG_PUSH(1);
if (lookahead) CMDARG_PUSH(0);
}
call_args
{
/* call_args can be followed by tLBRACE_ARG (that does CMDARG_PUSH(0) in the lexer)
* but the push must be done after CMDARG_POP() in the parser.
* So this code does CMDARG_POP() to pop 0 pushed by tLBRACE_ARG,
* CMDARG_POP() to pop 1 pushed by command_args,
* and CMDARG_PUSH(0) to restore back the flag set by tLBRACE_ARG.
*/
int lookahead = 0;
switch (yychar) {
case tLBRACE_ARG:
lookahead = 1;
}
if (lookahead) CMDARG_POP();
CMDARG_POP();
if (lookahead) CMDARG_PUSH(0);
$$ = $2;
}
;
block_arg : tAMPER arg_value
{
/*%%%*/
$$ = NEW_BLOCK_PASS($2, &@$);
/*% %*/
/*% ripper: $2 %*/
}
;
opt_block_arg : ',' block_arg
{
$$ = $2;
}
| none
{
$$ = 0;
}
;
args : arg_value
{
/*%%%*/
$$ = NEW_LIST($1, &@$);
/*% %*/
/*% ripper: args_add!(args_new!, $1) %*/
}
| tSTAR arg_value
{
/*%%%*/
$$ = NEW_SPLAT($2, &@$);
/*% %*/
/*% ripper: args_add_star!(args_new!, $2) %*/
}
| args ',' arg_value
{
/*%%%*/
$$ = last_arg_append(p, $1, $3, &@$);
/*% %*/
/*% ripper: args_add!($1, $3) %*/
}
| args ',' tSTAR arg_value
{
/*%%%*/
$$ = rest_arg_append(p, $1, $4, &@$);
/*% %*/
/*% ripper: args_add_star!($1, $4) %*/
}
;
mrhs_arg : mrhs
| arg_value
;
mrhs : args ',' arg_value
{
/*%%%*/
$$ = last_arg_append(p, $1, $3, &@$);
/*% %*/
/*% ripper: mrhs_add!(mrhs_new_from_args!($1), $3) %*/
}
| args ',' tSTAR arg_value
{
/*%%%*/
$$ = rest_arg_append(p, $1, $4, &@$);
/*% %*/
/*% ripper: mrhs_add_star!(mrhs_new_from_args!($1), $4) %*/
}
| tSTAR arg_value
{
/*%%%*/
$$ = NEW_SPLAT($2, &@$);
/*% %*/
/*% ripper: mrhs_add_star!(mrhs_new!, $2) %*/
}
;
primary : literal
| strings
| xstring
| regexp
| words
| qwords
| symbols
| qsymbols
| var_ref
| backref
| tFID
{
/*%%%*/
$$ = NEW_FCALL($1, 0, &@$);
/*% %*/
/*% ripper: method_add_arg!(fcall!($1), args_new!) %*/
}
| k_begin
{
CMDARG_PUSH(0);
}
bodystmt
k_end
{
CMDARG_POP();
/*%%%*/
set_line_body($3, @1.end_pos.lineno);
$$ = NEW_BEGIN($3, &@$);
nd_set_line($$, @1.end_pos.lineno);
/*% %*/
/*% ripper: begin!($3) %*/
}
| tLPAREN_ARG {SET_LEX_STATE(EXPR_ENDARG);} rparen
{
/*%%%*/
$$ = NEW_BEGIN(0, &@$);
/*% %*/
/*% ripper: paren!(0) %*/
}
| tLPAREN_ARG stmt {SET_LEX_STATE(EXPR_ENDARG);} rparen
{
/*%%%*/
if (nd_type($2) == NODE_SELF) $2->nd_state = 0;
$$ = $2;
/*% %*/
/*% ripper: paren!($2) %*/
}
| tLPAREN compstmt ')'
{
/*%%%*/
if (nd_type($2) == NODE_SELF) $2->nd_state = 0;
$$ = $2;
/*% %*/
/*% ripper: paren!($2) %*/
}
| primary_value tCOLON2 tCONSTANT
{
/*%%%*/
$$ = NEW_COLON2($1, $3, &@$);
/*% %*/
/*% ripper: const_path_ref!($1, $3) %*/
}
| tCOLON3 tCONSTANT
{
/*%%%*/
$$ = NEW_COLON3($2, &@$);
/*% %*/
/*% ripper: top_const_ref!($2) %*/
}
| tLBRACK aref_args ']'
{
/*%%%*/
$$ = make_list($2, &@$);
/*% %*/
/*% ripper: array!(escape_Qundef($2)) %*/
}
| tLBRACE assoc_list '}'
{
/*%%%*/
$$ = new_hash(p, $2, &@$);
$$->nd_brace = TRUE;
/*% %*/
/*% ripper: hash!(escape_Qundef($2)) %*/
}
| k_return
{
/*%%%*/
$$ = NEW_RETURN(0, &@$);
/*% %*/
/*% ripper: return0! %*/
}
| keyword_yield '(' call_args rparen
{
/*%%%*/
$$ = new_yield(p, $3, &@$);
/*% %*/
/*% ripper: yield!(paren!($3)) %*/
}
| keyword_yield '(' rparen
{
/*%%%*/
$$ = NEW_YIELD(0, &@$);
/*% %*/
/*% ripper: yield!(paren!(args_new!)) %*/
}
| keyword_yield
{
/*%%%*/
$$ = NEW_YIELD(0, &@$);
/*% %*/
/*% ripper: yield0! %*/
}
| keyword_defined opt_nl '(' {p->in_defined = 1;} expr rparen
{
p->in_defined = 0;
$$ = new_defined(p, $5, &@$);
}
| keyword_not '(' expr rparen
{
$$ = call_uni_op(p, method_cond(p, $3, &@3), METHOD_NOT, &@1, &@$);
}
| keyword_not '(' rparen
{
$$ = call_uni_op(p, method_cond(p, new_nil(&@2), &@2), METHOD_NOT, &@1, &@$);
}
| fcall brace_block
{
/*%%%*/
$$ = method_add_block(p, $1, $2, &@$);
/*% %*/
/*% ripper: method_add_block!(method_add_arg!(fcall!($1), args_new!), $2) %*/
}
| method_call
| method_call brace_block
{
/*%%%*/
block_dup_check(p, $1->nd_args, $2);
$$ = method_add_block(p, $1, $2, &@$);
/*% %*/
/*% ripper: method_add_block!($1, $2) %*/
}
| tLAMBDA
{
token_info_push(p, "->", &@1);
}
lambda
{
$$ = $3;
/*%%%*/
nd_set_first_loc($$, @1.beg_pos);
/*% %*/
}
| k_if expr_value then
compstmt
if_tail
k_end
{
/*%%%*/
$$ = new_if(p, $2, $4, $5, &@$);
fixpos($$, $2);
/*% %*/
/*% ripper: if!($2, $4, escape_Qundef($5)) %*/
}
| k_unless expr_value then
compstmt
opt_else
k_end
{
/*%%%*/
$$ = new_unless(p, $2, $4, $5, &@$);
fixpos($$, $2);
/*% %*/
/*% ripper: unless!($2, $4, escape_Qundef($5)) %*/
}
| k_while expr_value_do
compstmt
k_end
{
/*%%%*/
$$ = NEW_WHILE(cond(p, $2, &@2), $3, 1, &@$);
fixpos($$, $2);
/*% %*/
/*% ripper: while!($2, $3) %*/
}
| k_until expr_value_do
compstmt
k_end
{
/*%%%*/
$$ = NEW_UNTIL(cond(p, $2, &@2), $3, 1, &@$);
fixpos($$, $2);
/*% %*/
/*% ripper: until!($2, $3) %*/
}
| k_case expr_value opt_terms
{
$<val>$ = p->case_labels;
p->case_labels = Qnil;
}
case_body
k_end
{
if (RTEST(p->case_labels)) rb_hash_clear(p->case_labels);
p->case_labels = $<val>4;
/*%%%*/
$$ = NEW_CASE($2, $5, &@$);
fixpos($$, $2);
/*% %*/
/*% ripper: case!($2, $5) %*/
}
| k_case opt_terms
{
$<val>$ = p->case_labels;
p->case_labels = 0;
}
case_body
k_end
{
if (RTEST(p->case_labels)) rb_hash_clear(p->case_labels);
p->case_labels = $<val>3;
/*%%%*/
$$ = NEW_CASE2($4, &@$);
/*% %*/
/*% ripper: case!(Qnil, $4) %*/
}
| k_case expr_value opt_terms
p_case_body
k_end
{
/*%%%*/
$$ = NEW_CASE3($2, $4, &@$);
rb_warn0L(nd_line($$), "Pattern matching is experimental, and the behavior may change in future versions of Ruby!");
/*% %*/
/*% ripper: case!($2, $4) %*/
}
| k_for for_var keyword_in expr_value_do
compstmt
k_end
{
/*%%%*/
/*
* for a, b, c in e
* #=>
* e.each{|*x| a, b, c = x}
*
* for a in e
* #=>
* e.each{|x| a, = x}
*/
ID id = internal_id(p);
NODE *m = NEW_ARGS_AUX(0, 0, &NULL_LOC);
NODE *args, *scope, *internal_var = NEW_DVAR(id, &@2);
VALUE tmpbuf = rb_imemo_tmpbuf_auto_free_pointer();
ID *tbl = ALLOC_N(ID, 3);
rb_imemo_tmpbuf_set_ptr(tmpbuf, tbl);
tbl[0] = 1 /* length of local var table */; tbl[1] = id /* internal id */;
tbl[2] = tmpbuf;
switch (nd_type($2)) {
case NODE_LASGN:
case NODE_DASGN:
case NODE_DASGN_CURR: /* e.each {|internal_var| a = internal_var; ... } */
$2->nd_value = internal_var;
id = 0;
m->nd_plen = 1;
m->nd_next = $2;
break;
case NODE_MASGN: /* e.each {|*internal_var| a, b, c = (internal_var.length == 1 && Array === (tmp = internal_var[0]) ? tmp : internal_var); ... } */
m->nd_next = node_assign(p, $2, NEW_FOR_MASGN(internal_var, &@2), &@2);
break;
default: /* e.each {|*internal_var| @a, B, c[1], d.attr = internal_val; ... } */
m->nd_next = node_assign(p, NEW_MASGN(NEW_LIST($2, &@2), 0, &@2), internal_var, &@2);
}
/* {|*internal_id| <m> = internal_id; ... } */
args = new_args(p, m, 0, id, 0, new_args_tail(p, 0, 0, 0, &@2), &@2);
scope = NEW_NODE(NODE_SCOPE, tbl, $5, args, &@$);
RB_OBJ_WRITTEN(p->ast, Qnil, tmpbuf);
$$ = NEW_FOR($4, scope, &@$);
fixpos($$, $2);
/*% %*/
/*% ripper: for!($2, $4, $5) %*/
}
| k_class cpath superclass
{
if (p->in_def) {
YYLTYPE loc = code_loc_gen(&@1, &@2);
yyerror1(&loc, "class definition in method body");
}
$<num>1 = p->in_class;
p->in_class = 1;
local_push(p, 0);
}
bodystmt
k_end
{
/*%%%*/
$$ = NEW_CLASS($2, $5, $3, &@$);
nd_set_line($$->nd_body, @6.end_pos.lineno);
set_line_body($5, @3.end_pos.lineno);
nd_set_line($$, @3.end_pos.lineno);
/*% %*/
/*% ripper: class!($2, $3, $5) %*/
local_pop(p);
p->in_class = $<num>1 & 1;
}
| k_class tLSHFT expr
{
$<num>$ = (p->in_class << 1) | p->in_def;
p->in_def = 0;
p->in_class = 0;
local_push(p, 0);
}
term
bodystmt
k_end
{
/*%%%*/
$$ = NEW_SCLASS($3, $6, &@$);
nd_set_line($$->nd_body, @7.end_pos.lineno);
set_line_body($6, nd_line($3));
fixpos($$, $3);
/*% %*/
/*% ripper: sclass!($3, $6) %*/
local_pop(p);
p->in_def = $<num>4 & 1;
p->in_class = ($<num>4 >> 1) & 1;
}
| k_module cpath
{
if (p->in_def) {
YYLTYPE loc = code_loc_gen(&@1, &@2);
yyerror1(&loc, "module definition in method body");
}
$<num>1 = p->in_class;
p->in_class = 1;
local_push(p, 0);
}
bodystmt
k_end
{
/*%%%*/
$$ = NEW_MODULE($2, $4, &@$);
nd_set_line($$->nd_body, @5.end_pos.lineno);
set_line_body($4, @2.end_pos.lineno);
nd_set_line($$, @2.end_pos.lineno);
/*% %*/
/*% ripper: module!($2, $4) %*/
local_pop(p);
p->in_class = $<num>1 & 1;
}
| k_def fname
{
local_push(p, 0);
$<id>$ = p->cur_arg;
p->cur_arg = 0;
}
{
$<num>$ = p->in_def;
p->in_def = 1;
}
f_arglist
bodystmt
k_end
{
/*%%%*/
NODE *body = remove_begin($6);
reduce_nodes(p, &body);
$$ = NEW_DEFN($2, $5, body, &@$);
nd_set_line($$->nd_defn, @7.end_pos.lineno);
set_line_body(body, @1.beg_pos.lineno);
/*% %*/
/*% ripper: def!($2, $5, $6) %*/
local_pop(p);
p->in_def = $<num>4 & 1;
p->cur_arg = $<id>3;
}
| k_def singleton dot_or_colon {SET_LEX_STATE(EXPR_FNAME);} fname
{
$<num>4 = p->in_def;
p->in_def = 1;
SET_LEX_STATE(EXPR_ENDFN|EXPR_LABEL); /* force for args */
local_push(p, 0);
$<id>$ = p->cur_arg;
p->cur_arg = 0;
}
f_arglist
bodystmt
k_end
{
/*%%%*/
NODE *body = remove_begin($8);
reduce_nodes(p, &body);
$$ = NEW_DEFS($2, $5, $7, body, &@$);
nd_set_line($$->nd_defn, @9.end_pos.lineno);
set_line_body(body, @1.beg_pos.lineno);
/*% %*/
/*% ripper: defs!($2, $3, $5, $7, $8) %*/
local_pop(p);
p->in_def = $<num>4 & 1;
p->cur_arg = $<id>6;
}
| keyword_break
{
/*%%%*/
$$ = NEW_BREAK(0, &@$);
/*% %*/
/*% ripper: break!(args_new!) %*/
}
| keyword_next
{
/*%%%*/
$$ = NEW_NEXT(0, &@$);
/*% %*/
/*% ripper: next!(args_new!) %*/
}
| keyword_redo
{
/*%%%*/
$$ = NEW_REDO(&@$);
/*% %*/
/*% ripper: redo! %*/
}
| keyword_retry
{
/*%%%*/
$$ = NEW_RETRY(&@$);
/*% %*/
/*% ripper: retry! %*/
}
| primary_value tMETHREF operation2
{
/*%%%*/
$$ = NEW_METHREF($1, $3, &@$);
/*% %*/
/*% ripper: methref!($1, $3) %*/
}
;
primary_value : primary
{
value_expr($1);
$$ = $1;
}
;
k_begin : keyword_begin
{
token_info_push(p, "begin", &@$);
}
;
k_if : keyword_if
{
WARN_EOL("if");
token_info_push(p, "if", &@$);
if (p->token_info && p->token_info->nonspc &&
p->token_info->next && !strcmp(p->token_info->next->token, "else")) {
const char *tok = p->lex.ptok;
const char *beg = p->lex.pbeg + p->token_info->next->beg.column;
beg += rb_strlen_lit("else");
while (beg < tok && ISSPACE(*beg)) beg++;
if (beg == tok) {
p->token_info->nonspc = 0;
}
}
}
;
k_unless : keyword_unless
{
token_info_push(p, "unless", &@$);
}
;
k_while : keyword_while
{
token_info_push(p, "while", &@$);
}
;
k_until : keyword_until
{
token_info_push(p, "until", &@$);
}
;
k_case : keyword_case
{
token_info_push(p, "case", &@$);
}
;
k_for : keyword_for
{
token_info_push(p, "for", &@$);
}
;
k_class : keyword_class
{
token_info_push(p, "class", &@$);
}
;
k_module : keyword_module
{
token_info_push(p, "module", &@$);
}
;
k_def : keyword_def
{
token_info_push(p, "def", &@$);
}
;
k_do : keyword_do
{
token_info_push(p, "do", &@$);
}
;
k_do_block : keyword_do_block
{
token_info_push(p, "do", &@$);
}
;
k_rescue : keyword_rescue
{
token_info_warn(p, "rescue", p->token_info, 1, &@$);
}
;
k_ensure : keyword_ensure
{
token_info_warn(p, "ensure", p->token_info, 1, &@$);
}
;
k_when : keyword_when
{
token_info_warn(p, "when", p->token_info, 0, &@$);
}
;
k_else : keyword_else
{
token_info *ptinfo_beg = p->token_info;
int same = ptinfo_beg && strcmp(ptinfo_beg->token, "case") != 0;
token_info_warn(p, "else", p->token_info, same, &@$);
if (same) {
token_info e;
e.next = ptinfo_beg->next;
e.token = "else";
token_info_setup(&e, p->lex.pbeg, &@$);
if (!e.nonspc) *ptinfo_beg = e;
}
}
;
k_elsif : keyword_elsif
{
WARN_EOL("elsif");
token_info_warn(p, "elsif", p->token_info, 1, &@$);
}
;
k_end : keyword_end
{
token_info_pop(p, "end", &@$);
}
;
k_return : keyword_return
{
if (p->in_class && !p->in_def && !dyna_in_block(p))
yyerror1(&@1, "Invalid return in class/module body");
}
;
then : term
| keyword_then
| term keyword_then
;
do : term
| keyword_do_cond
;
if_tail : opt_else
| k_elsif expr_value then
compstmt
if_tail
{
/*%%%*/
$$ = new_if(p, $2, $4, $5, &@$);
fixpos($$, $2);
/*% %*/
/*% ripper: elsif!($2, $4, escape_Qundef($5)) %*/
}
;
opt_else : none
| k_else compstmt
{
/*%%%*/
$$ = $2;
/*% %*/
/*% ripper: else!($2) %*/
}
;
for_var : lhs
| mlhs
;
f_marg : f_norm_arg
{
/*%%%*/
$$ = assignable(p, $1, 0, &@$);
mark_lvar_used(p, $$);
/*% %*/
/*% ripper: assignable(p, $1) %*/
}
| tLPAREN f_margs rparen
{
/*%%%*/
$$ = $2;
/*% %*/
/*% ripper: mlhs_paren!($2) %*/
}
;
f_marg_list : f_marg
{
/*%%%*/
$$ = NEW_LIST($1, &@$);
/*% %*/
/*% ripper: mlhs_add!(mlhs_new!, $1) %*/
}
| f_marg_list ',' f_marg
{
/*%%%*/
$$ = list_append(p, $1, $3);
/*% %*/
/*% ripper: mlhs_add!($1, $3) %*/
}
;
f_margs : f_marg_list
{
/*%%%*/
$$ = NEW_MASGN($1, 0, &@$);
/*% %*/
/*% ripper: $1 %*/
}
| f_marg_list ',' f_rest_marg
{
/*%%%*/
$$ = NEW_MASGN($1, $3, &@$);
/*% %*/
/*% ripper: mlhs_add_star!($1, $3) %*/
}
| f_marg_list ',' f_rest_marg ',' f_marg_list
{
/*%%%*/
$$ = NEW_MASGN($1, NEW_POSTARG($3, $5, &@$), &@$);
/*% %*/
/*% ripper: mlhs_add_post!(mlhs_add_star!($1, $3), $5) %*/
}
| f_rest_marg
{
/*%%%*/
$$ = NEW_MASGN(0, $1, &@$);
/*% %*/
/*% ripper: mlhs_add_star!(mlhs_new!, $1) %*/
}
| f_rest_marg ',' f_marg_list
{
/*%%%*/
$$ = NEW_MASGN(0, NEW_POSTARG($1, $3, &@$), &@$);
/*% %*/
/*% ripper: mlhs_add_post!(mlhs_add_star!(mlhs_new!, $1), $3) %*/
}
;
f_rest_marg : tSTAR f_norm_arg
{
/*%%%*/
$$ = assignable(p, $2, 0, &@$);
mark_lvar_used(p, $$);
/*% %*/
/*% ripper: assignable(p, $2) %*/
}
| tSTAR
{
/*%%%*/
$$ = NODE_SPECIAL_NO_NAME_REST;
/*% %*/
/*% ripper: Qnil %*/
}
;
block_args_tail : f_block_kwarg ',' f_kwrest opt_f_block_arg
{
$$ = new_args_tail(p, $1, $3, $4, &@3);
}
| f_block_kwarg opt_f_block_arg
{
$$ = new_args_tail(p, $1, Qnone, $2, &@1);
}
| f_kwrest opt_f_block_arg
{
$$ = new_args_tail(p, Qnone, $1, $2, &@1);
}
| f_no_kwarg opt_f_block_arg
{
$$ = new_args_tail(p, Qnone, ID2VAL(idNil), $2, &@1);
}
| f_block_arg
{
$$ = new_args_tail(p, Qnone, Qnone, $1, &@1);
}
;
opt_block_args_tail : ',' block_args_tail
{
$$ = $2;
}
| /* none */
{
$$ = new_args_tail(p, Qnone, Qnone, Qnone, &@0);
}
;
block_param : f_arg ',' f_block_optarg ',' f_rest_arg opt_block_args_tail
{
$$ = new_args(p, $1, $3, $5, Qnone, $6, &@$);
}
| f_arg ',' f_block_optarg ',' f_rest_arg ',' f_arg opt_block_args_tail
{
$$ = new_args(p, $1, $3, $5, $7, $8, &@$);
}
| f_arg ',' f_block_optarg opt_block_args_tail
{
$$ = new_args(p, $1, $3, Qnone, Qnone, $4, &@$);
}
| f_arg ',' f_block_optarg ',' f_arg opt_block_args_tail
{
$$ = new_args(p, $1, $3, Qnone, $5, $6, &@$);
}
| f_arg ',' f_rest_arg opt_block_args_tail
{
$$ = new_args(p, $1, Qnone, $3, Qnone, $4, &@$);
}
| f_arg ','
{
/*%%%*/
/* magic number for rest_id in iseq_set_arguments() */
$$ = new_args(p, $1, Qnone, NODE_SPECIAL_EXCESSIVE_COMMA, Qnone, new_args_tail(p, Qnone, Qnone, Qnone, &@1), &@$);
/*% %*/
/*% ripper: new_args(p, $1, Qnone, excessed_comma!, Qnone, new_args_tail(p, Qnone, Qnone, Qnone, NULL), NULL) %*/
}
| f_arg ',' f_rest_arg ',' f_arg opt_block_args_tail
{
$$ = new_args(p, $1, Qnone, $3, $5, $6, &@$);
}
| f_arg opt_block_args_tail
{
$$ = new_args(p, $1, Qnone, Qnone, Qnone, $2, &@$);
}
| f_block_optarg ',' f_rest_arg opt_block_args_tail
{
$$ = new_args(p, Qnone, $1, $3, Qnone, $4, &@$);
}
| f_block_optarg ',' f_rest_arg ',' f_arg opt_block_args_tail
{
$$ = new_args(p, Qnone, $1, $3, $5, $6, &@$);
}
| f_block_optarg opt_block_args_tail
{
$$ = new_args(p, Qnone, $1, Qnone, Qnone, $2, &@$);
}
| f_block_optarg ',' f_arg opt_block_args_tail
{
$$ = new_args(p, Qnone, $1, Qnone, $3, $4, &@$);
}
| f_rest_arg opt_block_args_tail
{
$$ = new_args(p, Qnone, Qnone, $1, Qnone, $2, &@$);
}
| f_rest_arg ',' f_arg opt_block_args_tail
{
$$ = new_args(p, Qnone, Qnone, $1, $3, $4, &@$);
}
| block_args_tail
{
$$ = new_args(p, Qnone, Qnone, Qnone, Qnone, $1, &@$);
}
;
opt_block_param : none
| block_param_def
{
p->command_start = TRUE;
}
;
block_param_def : '|' opt_bv_decl '|'
{
p->cur_arg = 0;
p->max_numparam = ORDINAL_PARAM;
/*%%%*/
$$ = 0;
/*% %*/
/*% ripper: block_var!(params!(Qnil,Qnil,Qnil,Qnil,Qnil,Qnil,Qnil), escape_Qundef($2)) %*/
}
| '|' block_param opt_bv_decl '|'
{
p->cur_arg = 0;
p->max_numparam = ORDINAL_PARAM;
/*%%%*/
$$ = $2;
/*% %*/
/*% ripper: block_var!(escape_Qundef($2), escape_Qundef($3)) %*/
}
;
opt_bv_decl : opt_nl
{
$$ = 0;
}
| opt_nl ';' bv_decls opt_nl
{
/*%%%*/
$$ = 0;
/*% %*/
/*% ripper: $3 %*/
}
;
bv_decls : bvar
/*% ripper[brace]: rb_ary_new3(1, get_value($1)) %*/
| bv_decls ',' bvar
/*% ripper[brace]: rb_ary_push($1, get_value($3)) %*/
;
bvar : tIDENTIFIER
{
new_bv(p, get_id($1));
/*% ripper: get_value($1) %*/
}
| f_bad_arg
{
$$ = 0;
}
;
lambda : {
$<vars>$ = dyna_push(p);
}
{
$<num>$ = p->lex.lpar_beg;
p->lex.lpar_beg = p->lex.paren_nest;
}
{
$<num>$ = p->max_numparam;
p->max_numparam = 0;
}
{
$<node>$ = numparam_push(p);
}
f_larglist
{
CMDARG_PUSH(0);
}
lambda_body
{
int max_numparam = p->max_numparam;
p->lex.lpar_beg = $<num>2;
p->max_numparam = $<num>3;
CMDARG_POP();
$5 = args_with_numbered(p, $5, max_numparam);
/*%%%*/
{
YYLTYPE loc = code_loc_gen(&@5, &@7);
$$ = NEW_LAMBDA($5, $7, &loc);
nd_set_line($$->nd_body, @7.end_pos.lineno);
nd_set_line($$, @5.end_pos.lineno);
}
/*% %*/
/*% ripper: lambda!($5, $7) %*/
numparam_pop(p, $<node>4);
dyna_pop(p, $<vars>1);
}
;
f_larglist : '(' f_args opt_bv_decl ')'
{
/*%%%*/
$$ = $2;
p->max_numparam = ORDINAL_PARAM;
/*% %*/
/*% ripper: paren!($2) %*/
}
| f_args
{
/*%%%*/
if (!args_info_empty_p($1->nd_ainfo))
p->max_numparam = ORDINAL_PARAM;
/*% %*/
$$ = $1;
}
;
lambda_body : tLAMBEG compstmt '}'
{
token_info_pop(p, "}", &@3);
$$ = $2;
}
| keyword_do_LAMBDA bodystmt k_end
{
$$ = $2;
}
;
do_block : k_do_block do_body k_end
{
$$ = $2;
/*%%%*/
$$->nd_body->nd_loc = code_loc_gen(&@1, &@3);
nd_set_line($$, @1.end_pos.lineno);
/*% %*/
}
;
block_call : command do_block
{
/*%%%*/
if (nd_type($1) == NODE_YIELD) {
compile_error(p, "block given to yield");
}
else {
block_dup_check(p, $1->nd_args, $2);
}
$$ = method_add_block(p, $1, $2, &@$);
fixpos($$, $1);
/*% %*/
/*% ripper: method_add_block!($1, $2) %*/
}
| block_call call_op2 operation2 opt_paren_args
{
/*%%%*/
$$ = new_qcall(p, $2, $1, $3, $4, &@3, &@$);
/*% %*/
/*% ripper: opt_event(:method_add_arg!, call!($1, $2, $3), $4) %*/
}
| block_call call_op2 operation2 opt_paren_args brace_block
{
/*%%%*/
$$ = new_command_qcall(p, $2, $1, $3, $4, $5, &@3, &@$);
/*% %*/
/*% ripper: opt_event(:method_add_block!, command_call!($1, $2, $3, $4), $5) %*/
}
| block_call call_op2 operation2 command_args do_block
{
/*%%%*/
$$ = new_command_qcall(p, $2, $1, $3, $4, $5, &@3, &@$);
/*% %*/
/*% ripper: method_add_block!(command_call!($1, $2, $3, $4), $5) %*/
}
;
method_call : fcall paren_args
{
/*%%%*/
$$ = $1;
$$->nd_args = $2;
nd_set_last_loc($1, @2.end_pos);
/*% %*/
/*% ripper: method_add_arg!(fcall!($1), $2) %*/
}
| primary_value call_op operation2 opt_paren_args
{
/*%%%*/
$$ = new_qcall(p, $2, $1, $3, $4, &@3, &@$);
nd_set_line($$, @3.end_pos.lineno);
/*% %*/
/*% ripper: opt_event(:method_add_arg!, call!($1, $2, $3), $4) %*/
}
| primary_value tCOLON2 operation2 paren_args
{
/*%%%*/
$$ = new_qcall(p, ID2VAL(idCOLON2), $1, $3, $4, &@3, &@$);
nd_set_line($$, @3.end_pos.lineno);
/*% %*/
/*% ripper: method_add_arg!(call!($1, ID2VAL(idCOLON2), $3), $4) %*/
}
| primary_value tCOLON2 operation3
{
/*%%%*/
$$ = new_qcall(p, ID2VAL(idCOLON2), $1, $3, Qnull, &@3, &@$);
/*% %*/
/*% ripper: call!($1, ID2VAL(idCOLON2), $3) %*/
}
| primary_value call_op paren_args
{
/*%%%*/
$$ = new_qcall(p, $2, $1, ID2VAL(idCall), $3, &@2, &@$);
nd_set_line($$, @2.end_pos.lineno);
/*% %*/
/*% ripper: method_add_arg!(call!($1, $2, ID2VAL(idCall)), $3) %*/
}
| primary_value tCOLON2 paren_args
{
/*%%%*/
$$ = new_qcall(p, ID2VAL(idCOLON2), $1, ID2VAL(idCall), $3, &@2, &@$);
nd_set_line($$, @2.end_pos.lineno);
/*% %*/
/*% ripper: method_add_arg!(call!($1, ID2VAL(idCOLON2), ID2VAL(idCall)), $3) %*/
}
| keyword_super paren_args
{
/*%%%*/
$$ = NEW_SUPER($2, &@$);
/*% %*/
/*% ripper: super!($2) %*/
}
| keyword_super
{
/*%%%*/
$$ = NEW_ZSUPER(&@$);
/*% %*/
/*% ripper: zsuper! %*/
}
| primary_value '[' opt_call_args rbracket
{
/*%%%*/
if ($1 && nd_type($1) == NODE_SELF)
$$ = NEW_FCALL(tAREF, $3, &@$);
else
$$ = NEW_CALL($1, tAREF, $3, &@$);
fixpos($$, $1);
/*% %*/
/*% ripper: aref!($1, escape_Qundef($3)) %*/
}
;
brace_block : '{' brace_body '}'
{
$$ = $2;
/*%%%*/
$$->nd_body->nd_loc = code_loc_gen(&@1, &@3);
nd_set_line($$, @1.end_pos.lineno);
/*% %*/
}
| k_do do_body k_end
{
$$ = $2;
/*%%%*/
$$->nd_body->nd_loc = code_loc_gen(&@1, &@3);
nd_set_line($$, @1.end_pos.lineno);
/*% %*/
}
;
brace_body : {$<vars>$ = dyna_push(p);}
{
$<num>$ = p->max_numparam;
p->max_numparam = 0;
}
{
$<node>$ = numparam_push(p);
}
opt_block_param compstmt
{
int max_numparam = p->max_numparam;
p->max_numparam = $<num>2;
$4 = args_with_numbered(p, $4, max_numparam);
/*%%%*/
$$ = NEW_ITER($4, $5, &@$);
/*% %*/
/*% ripper: brace_block!(escape_Qundef($4), $5) %*/
numparam_pop(p, $<node>3);
dyna_pop(p, $<vars>1);
}
;
do_body : {$<vars>$ = dyna_push(p);}
{
$<num>$ = p->max_numparam;
p->max_numparam = 0;
}
{
$<node>$ = numparam_push(p);
CMDARG_PUSH(0);
}
opt_block_param bodystmt
{
int max_numparam = p->max_numparam;
p->max_numparam = $<num>2;
$4 = args_with_numbered(p, $4, max_numparam);
/*%%%*/
$$ = NEW_ITER($4, $5, &@$);
/*% %*/
/*% ripper: do_block!(escape_Qundef($4), $5) %*/
CMDARG_POP();
numparam_pop(p, $<node>3);
dyna_pop(p, $<vars>1);
}
;
case_args : arg_value
{
/*%%%*/
check_literal_when(p, $1, &@1);
$$ = NEW_LIST($1, &@$);
/*% %*/
/*% ripper: args_add!(args_new!, $1) %*/
}
| tSTAR arg_value
{
/*%%%*/
$$ = NEW_SPLAT($2, &@$);
/*% %*/
/*% ripper: args_add_star!(args_new!, $2) %*/
}
| case_args ',' arg_value
{
/*%%%*/
check_literal_when(p, $3, &@3);
$$ = last_arg_append(p, $1, $3, &@$);
/*% %*/
/*% ripper: args_add!($1, $3) %*/
}
| case_args ',' tSTAR arg_value
{
/*%%%*/
$$ = rest_arg_append(p, $1, $4, &@$);
/*% %*/
/*% ripper: args_add_star!($1, $4) %*/
}
;
case_body : k_when case_args then
compstmt
cases
{
/*%%%*/
$$ = NEW_WHEN($2, $4, $5, &@$);
fixpos($$, $2);
/*% %*/
/*% ripper: when!($2, $4, escape_Qundef($5)) %*/
}
;
cases : opt_else
| case_body
;
p_case_body : keyword_in
{
SET_LEX_STATE(EXPR_BEG|EXPR_LABEL);
p->command_start = FALSE;
$<num>$ = p->in_kwarg;
p->in_kwarg = 1;
}
{
$<tbl>$ = p->pvtbl;
p->pvtbl = st_init_numtable();
}
p_top_expr then
{
st_free_table(p->pvtbl);
p->pvtbl = $<tbl>3;
}
{
p->in_kwarg = !!$<num>2;
}
compstmt
p_cases
{
/*%%%*/
$$ = NEW_IN($4, $8, $9, &@$);
/*% %*/
/*% ripper: in!($4, $8, escape_Qundef($9)) %*/
}
;
p_cases : opt_else
| p_case_body
;
p_top_expr : p_top_expr_body
| p_top_expr_body modifier_if expr_value
{
/*%%%*/
$$ = new_if(p, $3, remove_begin($1), 0, &@$);
fixpos($$, $3);
/*% %*/
/*% ripper: if_mod!($3, $1) %*/
}
| p_top_expr_body modifier_unless expr_value
{
/*%%%*/
$$ = new_unless(p, $3, remove_begin($1), 0, &@$);
fixpos($$, $3);
/*% %*/
/*% ripper: unless_mod!($3, $1) %*/
}
;
p_top_expr_body : p_expr
| p_expr ','
{
$$ = new_array_pattern_tail(p, Qnone, 1, 0, Qnone, &@$);
$$ = new_array_pattern(p, Qnone, get_value($1), $$, &@$);
}
| p_expr ',' p_args
{
$$ = new_array_pattern(p, Qnone, get_value($1), $3, &@$);
/*%%%*/
nd_set_first_loc($$, @1.beg_pos);
/*%
%*/
}
| p_args_tail
{
$$ = new_array_pattern(p, Qnone, Qnone, $1, &@$);
}
| p_kwargs
{
$$ = new_hash_pattern(p, Qnone, $1, &@$);
}
;
p_expr : p_as
;
p_as : p_expr tASSOC p_variable
{
/*%%%*/
NODE *n = NEW_LIST($1, &@$);
n = list_append(p, n, $3);
$$ = new_hash(p, n, &@$);
/*% %*/
/*% ripper: binary!($1, STATIC_ID2SYM((id_assoc)), $3) %*/
}
| p_alt
;
p_alt : p_alt '|' p_expr_basic
{
/*%%%*/
$$ = NEW_NODE(NODE_OR, $1, $3, 0, &@$);
/*% %*/
/*% ripper: binary!($1, STATIC_ID2SYM(idOr), $3) %*/
}
| p_expr_basic
;
p_expr_basic : p_value
| p_const '(' p_args rparen
{
$$ = new_array_pattern(p, $1, Qnone, $3, &@$);
/*%%%*/
nd_set_first_loc($$, @1.beg_pos);
/*%
%*/
}
| p_const '(' p_kwargs rparen
{
$$ = new_hash_pattern(p, $1, $3, &@$);
/*%%%*/
nd_set_first_loc($$, @1.beg_pos);
/*%
%*/
}
| p_const '(' rparen
{
$$ = new_array_pattern_tail(p, Qnone, 0, 0, Qnone, &@$);
$$ = new_array_pattern(p, $1, Qnone, $$, &@$);
}
| p_const '[' p_args rbracket
{
$$ = new_array_pattern(p, $1, Qnone, $3, &@$);
/*%%%*/
nd_set_first_loc($$, @1.beg_pos);
/*%
%*/
}
| p_const '[' p_kwargs rbracket
{
$$ = new_hash_pattern(p, $1, $3, &@$);
/*%%%*/
nd_set_first_loc($$, @1.beg_pos);
/*%
%*/
}
| p_const '[' rbracket
{
$$ = new_array_pattern_tail(p, Qnone, 0, 0, Qnone, &@$);
$$ = new_array_pattern(p, $1, Qnone, $$, &@$);
}
| tLBRACK p_args rbracket
{
$$ = new_array_pattern(p, Qnone, Qnone, $2, &@$);
}
| tLBRACK rbracket
{
$$ = new_array_pattern_tail(p, Qnone, 0, 0, Qnone, &@$);
$$ = new_array_pattern(p, Qnone, Qnone, $$, &@$);
}
| tLBRACE p_kwargs '}'
{
$$ = new_hash_pattern(p, Qnone, $2, &@$);
}
| tLBRACE '}'
{
$$ = new_hash_pattern_tail(p, Qnone, 0, &@$);
$$ = new_hash_pattern(p, Qnone, $$, &@$);
}
| tLPAREN p_expr rparen
{
$$ = $2;
}
;
p_args : p_expr
{
/*%%%*/
NODE *pre_args = NEW_LIST($1, &@$);
$$ = new_array_pattern_tail(p, pre_args, 0, 0, Qnone, &@$);
/*%
$$ = new_array_pattern_tail(p, rb_ary_new_from_args(1, get_value($1)), 0, 0, Qnone, &@$);
%*/
}
| p_args_head
{
$$ = new_array_pattern_tail(p, $1, 1, 0, Qnone, &@$);
}
| p_args_head p_arg
{
/*%%%*/
$$ = new_array_pattern_tail(p, list_concat($1, $2), 0, 0, Qnone, &@$);
/*%
VALUE pre_args = rb_ary_concat($1, get_value($2));
$$ = new_array_pattern_tail(p, pre_args, 0, 0, Qnone, &@$);
%*/
}
| p_args_head tSTAR tIDENTIFIER
{
$$ = new_array_pattern_tail(p, $1, 1, $3, Qnone, &@$);
}
| p_args_head tSTAR tIDENTIFIER ',' p_args_post
{
$$ = new_array_pattern_tail(p, $1, 1, $3, $5, &@$);
}
| p_args_head tSTAR
{
$$ = new_array_pattern_tail(p, $1, 1, 0, Qnone, &@$);
}
| p_args_head tSTAR ',' p_args_post
{
$$ = new_array_pattern_tail(p, $1, 1, 0, $4, &@$);
}
| p_args_tail
;
p_args_head : p_arg ','
{
$$ = $1;
}
| p_args_head p_arg ','
{
/*%%%*/
$$ = list_concat($1, $2);
/*% %*/
/*% ripper: rb_ary_concat($1, get_value($2)) %*/
}
;
p_args_tail : tSTAR tIDENTIFIER
{
$$ = new_array_pattern_tail(p, Qnone, 1, $2, Qnone, &@$);
}
| tSTAR tIDENTIFIER ',' p_args_post
{
$$ = new_array_pattern_tail(p, Qnone, 1, $2, $4, &@$);
}
| tSTAR
{
$$ = new_array_pattern_tail(p, Qnone, 1, 0, Qnone, &@$);
}
| tSTAR ',' p_args_post
{
$$ = new_array_pattern_tail(p, Qnone, 1, 0, $3, &@$);
}
;
p_args_post : p_arg
| p_args_post ',' p_arg
{
/*%%%*/
$$ = list_concat($1, $3);
/*% %*/
/*% ripper: rb_ary_concat($1, get_value($3)) %*/
}
;
p_arg : p_expr
{
/*%%%*/
$$ = NEW_LIST($1, &@$);
/*% %*/
/*% ripper: rb_ary_new_from_args(1, get_value($1)) %*/
}
;
p_kwargs : p_kwarg ',' p_kwrest
{
$$ = new_hash_pattern_tail(p, new_unique_key_hash(p, $1, &@$), $3, &@$);
}
| p_kwarg
{
$$ = new_hash_pattern_tail(p, new_unique_key_hash(p, $1, &@$), 0, &@$);
}
| p_kwrest
{
$$ = new_hash_pattern_tail(p, new_hash(p, Qnone, &@$), $1, &@$);
}
| p_kwarg ',' p_kwnorest
{
$$ = new_hash_pattern_tail(p, new_unique_key_hash(p, $1, &@$), ID2VAL(idNil), &@$);
}
| p_kwnorest
{
$$ = new_hash_pattern_tail(p, new_hash(p, Qnone, &@$), ID2VAL(idNil), &@$);
}
;
p_kwarg : p_kw
| p_kwarg ',' p_kw
{
/*%%%*/
$$ = list_concat($1, $3);
/*% %*/
/*% ripper: rb_ary_concat($1, $3) %*/
}
;
p_kw : tLABEL p_expr
{
/*%%%*/
$$ = list_append(p, NEW_LIST(NEW_LIT(ID2SYM($1), &@$), &@$), $2);
/*% %*/
/*% ripper: rb_ary_new_from_args(1, rb_ary_new_from_args(2, get_value($1), get_value($2))) %*/
}
| tLABEL
{
if (!is_local_id(get_id($1))) {
yyerror1(&@1, "key must be valid as local variables");
}
/*%%%*/
error_duplicate_pattern_variable(p, $1, &@1);
$$ = list_append(p, NEW_LIST(NEW_LIT(ID2SYM($1), &@$), &@$), assignable(p, $1, 0, &@$));
/*% %*/
/*% ripper: rb_ary_new_from_args(1, rb_ary_new_from_args(2, get_value($1), Qnil)) %*/
}
| tSTRING_BEG string_contents tLABEL_END p_expr
{
/*%%%*/
YYLTYPE loc = code_loc_gen(&@1, &@3);
NODE *node = dsym_node(p, $2, &loc);
if (nd_type(node) == NODE_LIT) {
$$ = list_append(p, NEW_LIST(node, &loc), $4);
}
else {
yyerror1(&loc, "symbol literal with interpolation is not allowed");
$$ = 0;
}
/*% %*/
/*% ripper: rb_ary_new_from_args(1, rb_ary_new_from_args(2, $2, get_value($4))) %*/
}
| tSTRING_BEG string_contents tLABEL_END
{
/*%%%*/
YYLTYPE loc = code_loc_gen(&@1, &@3);
NODE *node = dsym_node(p, $2, &loc);
ID id;
if (nd_type(node) == NODE_LIT) {
id = SYM2ID(node->nd_lit);
if (!is_local_id(id)) {
yyerror1(&loc, "key must be valid as local variables");
}
error_duplicate_pattern_variable(p, id, &loc);
$$ = list_append(p, NEW_LIST(node, &loc), assignable(p, id, 0, &@$));
}
else {
yyerror1(&loc, "symbol literal with interpolation is not allowed");
$$ = 0;
}
/*% %*/
/*% ripper: rb_ary_new_from_args(1, rb_ary_new_from_args(2, $2, Qnil)) %*/
}
;
p_kwrest : kwrest_mark tIDENTIFIER
{
$$ = $2;
}
| kwrest_mark
{
$$ = 0;
}
;
p_kwnorest : kwrest_mark keyword_nil
{
$$ = 0;
}
;
p_value : p_primitive
| p_primitive tDOT2 p_primitive
{
/*%%%*/
value_expr($1);
value_expr($3);
$$ = NEW_DOT2($1, $3, &@$);
/*% %*/
/*% ripper: dot2!($1, $3) %*/
}
| p_primitive tDOT3 p_primitive
{
/*%%%*/
value_expr($1);
value_expr($3);
$$ = NEW_DOT3($1, $3, &@$);
/*% %*/
/*% ripper: dot3!($1, $3) %*/
}
| p_primitive tDOT2
{
/*%%%*/
YYLTYPE loc;
loc.beg_pos = @2.end_pos;
loc.end_pos = @2.end_pos;
value_expr($1);
$$ = NEW_DOT2($1, new_nil(&loc), &@$);
/*% %*/
/*% ripper: dot2!($1, Qnil) %*/
}
| p_primitive tDOT3
{
/*%%%*/
YYLTYPE loc;
loc.beg_pos = @2.end_pos;
loc.end_pos = @2.end_pos;
value_expr($1);
$$ = NEW_DOT3($1, new_nil(&loc), &@$);
/*% %*/
/*% ripper: dot3!($1, Qnil) %*/
}
| p_variable
| p_var_ref
| p_const
| tBDOT2 p_primitive
{
/*%%%*/
YYLTYPE loc;
loc.beg_pos = @1.beg_pos;
loc.end_pos = @1.beg_pos;
value_expr($2);
$$ = NEW_DOT2(new_nil(&loc), $2, &@$);
/*% %*/
/*% ripper: dot2!(Qnil, $2) %*/
}
| tBDOT3 p_primitive
{
/*%%%*/
YYLTYPE loc;
loc.beg_pos = @1.beg_pos;
loc.end_pos = @1.beg_pos;
value_expr($2);
$$ = NEW_DOT3(new_nil(&loc), $2, &@$);
/*% %*/
/*% ripper: dot3!(Qnil, $2) %*/
}
;
p_primitive : literal
| strings
| xstring
| regexp
| words
| qwords
| symbols
| qsymbols
| keyword_variable
{
/*%%%*/
if (!($$ = gettable(p, $1, &@$))) $$ = NEW_BEGIN(0, &@$);
/*% %*/
/*% ripper: var_ref!($1) %*/
}
| tLAMBDA
{
token_info_push(p, "->", &@1);
}
lambda
{
$$ = $3;
/*%%%*/
nd_set_first_loc($$, @1.beg_pos);
/*% %*/
}
;
p_variable : tIDENTIFIER
{
/*%%%*/
error_duplicate_pattern_variable(p, $1, &@1);
$$ = assignable(p, $1, 0, &@$);
/*% %*/
/*% ripper: assignable(p, var_field(p, $1)) %*/
}
;
p_var_ref : '^' tIDENTIFIER
{
/*%%%*/
NODE *n = gettable(p, $2, &@$);
if (!(nd_type(n) == NODE_LVAR || nd_type(n) == NODE_DVAR)) {
compile_error(p, "%"PRIsVALUE": no such local variable", rb_id2str($2));
}
$$ = n;
/*% %*/
/*% ripper: var_ref!($2) %*/
}
;
p_const : tCOLON3 cname
{
/*%%%*/
$$ = NEW_COLON3($2, &@$);
/*% %*/
/*% ripper: top_const_ref!($2) %*/
}
| p_const tCOLON2 cname
{
/*%%%*/
$$ = NEW_COLON2($1, $3, &@$);
/*% %*/
/*% ripper: const_path_ref!($1, $3) %*/
}
| tCONSTANT
{
/*%%%*/
$$ = gettable(p, $1, &@$);
/*% %*/
/*% ripper: var_ref!($1) %*/
}
;
opt_rescue : k_rescue exc_list exc_var then
compstmt
opt_rescue
{
/*%%%*/
$$ = NEW_RESBODY($2,
$3 ? block_append(p, node_assign(p, $3, NEW_ERRINFO(&@3), &@3), $5) : $5,
$6, &@$);
fixpos($$, $2?$2:$5);
/*% %*/
/*% ripper: rescue!(escape_Qundef($2), escape_Qundef($3), escape_Qundef($5), escape_Qundef($6)) %*/
}
| none
;
exc_list : arg_value
{
/*%%%*/
$$ = NEW_LIST($1, &@$);
/*% %*/
/*% ripper: rb_ary_new3(1, get_value($1)) %*/
}
| mrhs
{
/*%%%*/
if (!($$ = splat_array($1))) $$ = $1;
/*% %*/
/*% ripper: $1 %*/
}
| none
;
exc_var : tASSOC lhs
{
$$ = $2;
}
| none
;
opt_ensure : k_ensure compstmt
{
/*%%%*/
$$ = $2;
/*% %*/
/*% ripper: ensure!($2) %*/
}
| none
;
literal : numeric
| symbol
;
strings : string
{
/*%%%*/
NODE *node = $1;
if (!node) {
node = NEW_STR(STR_NEW0(), &@$);
RB_OBJ_WRITTEN(p->ast, Qnil, node->nd_lit);
}
else {
node = evstr2dstr(p, node);
}
$$ = node;
/*% %*/
/*% ripper: $1 %*/
}
;
string : tCHAR
| string1
| string string1
{
/*%%%*/
$$ = literal_concat(p, $1, $2, &@$);
/*% %*/
/*% ripper: string_concat!($1, $2) %*/
}
;
string1 : tSTRING_BEG string_contents tSTRING_END
{
/*%%%*/
$$ = heredoc_dedent(p, $2);
if ($$) nd_set_loc($$, &@$);
/*% %*/
/*% ripper: string_literal!(heredoc_dedent(p, $2)) %*/
}
;
xstring : tXSTRING_BEG xstring_contents tSTRING_END
{
/*%%%*/
$$ = new_xstring(p, heredoc_dedent(p, $2), &@$);
/*% %*/
/*% ripper: xstring_literal!(heredoc_dedent(p, $2)) %*/
}
;
regexp : tREGEXP_BEG regexp_contents tREGEXP_END
{
$$ = new_regexp(p, $2, $3, &@$);
}
;
words : tWORDS_BEG ' ' word_list tSTRING_END
{
/*%%%*/
$$ = make_list($3, &@$);
/*% %*/
/*% ripper: array!($3) %*/
}
;
word_list : /* none */
{
/*%%%*/
$$ = 0;
/*% %*/
/*% ripper: words_new! %*/
}
| word_list word ' '
{
/*%%%*/
$$ = list_append(p, $1, evstr2dstr(p, $2));
/*% %*/
/*% ripper: words_add!($1, $2) %*/
}
;
word : string_content
/*% ripper[brace]: word_add!(word_new!, $1) %*/
| word string_content
{
/*%%%*/
$$ = literal_concat(p, $1, $2, &@$);
/*% %*/
/*% ripper: word_add!($1, $2) %*/
}
;
symbols : tSYMBOLS_BEG ' ' symbol_list tSTRING_END
{
/*%%%*/
$$ = make_list($3, &@$);
/*% %*/
/*% ripper: array!($3) %*/
}
;
symbol_list : /* none */
{
/*%%%*/
$$ = 0;
/*% %*/
/*% ripper: symbols_new! %*/
}
| symbol_list word ' '
{
/*%%%*/
$$ = symbol_append(p, $1, evstr2dstr(p, $2));
/*% %*/
/*% ripper: symbols_add!($1, $2) %*/
}
;
qwords : tQWORDS_BEG ' ' qword_list tSTRING_END
{
/*%%%*/
$$ = make_list($3, &@$);
/*% %*/
/*% ripper: array!($3) %*/
}
;
qsymbols : tQSYMBOLS_BEG ' ' qsym_list tSTRING_END
{
/*%%%*/
$$ = make_list($3, &@$);
/*% %*/
/*% ripper: array!($3) %*/
}
;
qword_list : /* none */
{
/*%%%*/
$$ = 0;
/*% %*/
/*% ripper: qwords_new! %*/
}
| qword_list tSTRING_CONTENT ' '
{
/*%%%*/
$$ = list_append(p, $1, $2);
/*% %*/
/*% ripper: qwords_add!($1, $2) %*/
}
;
qsym_list : /* none */
{
/*%%%*/
$$ = 0;
/*% %*/
/*% ripper: qsymbols_new! %*/
}
| qsym_list tSTRING_CONTENT ' '
{
/*%%%*/
$$ = symbol_append(p, $1, $2);
/*% %*/
/*% ripper: qsymbols_add!($1, $2) %*/
}
;
string_contents : /* none */
{
/*%%%*/
$$ = 0;
/*% %*/
/*% ripper: string_content! %*/
}
| string_contents string_content
{
/*%%%*/
$$ = literal_concat(p, $1, $2, &@$);
/*% %*/
/*% ripper: string_add!($1, $2) %*/
}
;
xstring_contents: /* none */
{
/*%%%*/
$$ = 0;
/*% %*/
/*% ripper: xstring_new! %*/
}
| xstring_contents string_content
{
/*%%%*/
$$ = literal_concat(p, $1, $2, &@$);
/*% %*/
/*% ripper: xstring_add!($1, $2) %*/
}
;
regexp_contents: /* none */
{
/*%%%*/
$$ = 0;
/*% %*/
/*% ripper: regexp_new! %*/
/*%%%*/
/*%
$$ = ripper_new_yylval(p, 0, $$, 0);
%*/
}
| regexp_contents string_content
{
/*%%%*/
NODE *head = $1, *tail = $2;
if (!head) {
$$ = tail;
}
else if (!tail) {
$$ = head;
}
else {
switch (nd_type(head)) {
case NODE_STR:
nd_set_type(head, NODE_DSTR);
break;
case NODE_DSTR:
break;
default:
head = list_append(p, NEW_DSTR(Qnil, &@$), head);
break;
}
$$ = list_append(p, head, tail);
}
/*%
VALUE s1 = 1, s2 = 0, n1 = $1, n2 = $2;
if (ripper_is_node_yylval(n1)) {
s1 = RNODE(n1)->nd_cval;
n1 = RNODE(n1)->nd_rval;
}
if (ripper_is_node_yylval(n2)) {
s2 = RNODE(n2)->nd_cval;
n2 = RNODE(n2)->nd_rval;
}
$$ = dispatch2(regexp_add, n1, n2);
if (!s1 && s2) {
$$ = ripper_new_yylval(p, 0, $$, s2);
}
%*/
}
;
string_content : tSTRING_CONTENT
| tSTRING_DVAR
{
/* need to backup p->lex.strterm so that a string literal `%&foo,#$&,bar&` can be parsed */
$<strterm>$ = p->lex.strterm;
p->lex.strterm = 0;
SET_LEX_STATE(EXPR_BEG);
}
string_dvar
{
p->lex.strterm = $<strterm>2;
/*%%%*/
$$ = NEW_EVSTR($3, &@$);
nd_set_line($$, @3.end_pos.lineno);
/*% %*/
/*% ripper: string_dvar!($3) %*/
}
| tSTRING_DBEG
{
CMDARG_PUSH(0);
COND_PUSH(0);
}
{
/* need to backup p->lex.strterm so that a string literal `%!foo,#{ !0 },bar!` can be parsed */
$<strterm>$ = p->lex.strterm;
p->lex.strterm = 0;
}
{
$<num>$ = p->lex.state;
SET_LEX_STATE(EXPR_BEG);
}
{
$<num>$ = p->lex.brace_nest;
p->lex.brace_nest = 0;
}
{
$<num>$ = p->heredoc_indent;
p->heredoc_indent = 0;
}
compstmt tSTRING_DEND
{
COND_POP();
CMDARG_POP();
p->lex.strterm = $<strterm>3;
SET_LEX_STATE($<num>4);
p->lex.brace_nest = $<num>5;
p->heredoc_indent = $<num>6;
p->heredoc_line_indent = -1;
/*%%%*/
if ($7) $7->flags &= ~NODE_FL_NEWLINE;
$$ = new_evstr(p, $7, &@$);
/*% %*/
/*% ripper: string_embexpr!($7) %*/
}
;
string_dvar : tGVAR
{
/*%%%*/
$$ = NEW_GVAR($1, &@$);
/*% %*/
/*% ripper: var_ref!($1) %*/
}
| tIVAR
{
/*%%%*/
$$ = NEW_IVAR($1, &@$);
/*% %*/
/*% ripper: var_ref!($1) %*/
}
| tCVAR
{
/*%%%*/
$$ = NEW_CVAR($1, &@$);
/*% %*/
/*% ripper: var_ref!($1) %*/
}
| backref
;
symbol : ssym
| dsym
;
ssym : tSYMBEG sym
{
SET_LEX_STATE(EXPR_END);
/*%%%*/
$$ = NEW_LIT(ID2SYM($2), &@$);
/*% %*/
/*% ripper: symbol_literal!(symbol!($2)) %*/
}
;
sym : fname
| tIVAR
| tGVAR
| tCVAR
;
dsym : tSYMBEG string_contents tSTRING_END
{
SET_LEX_STATE(EXPR_END);
/*%%%*/
$$ = dsym_node(p, $2, &@$);
/*% %*/
/*% ripper: dyna_symbol!($2) %*/
}
;
numeric : simple_numeric
| tUMINUS_NUM simple_numeric %prec tLOWEST
{
/*%%%*/
$$ = $2;
RB_OBJ_WRITE(p->ast, &$$->nd_lit, negate_lit(p, $$->nd_lit));
/*% %*/
/*% ripper: unary!(ID2VAL(idUMinus), $2) %*/
}
;
simple_numeric : tINTEGER
| tFLOAT
| tRATIONAL
| tIMAGINARY
;
user_variable : tIDENTIFIER
| tIVAR
| tGVAR
| tCONSTANT
| tCVAR
;
keyword_variable: keyword_nil {$$ = KWD2EID(nil, $1);}
| keyword_self {$$ = KWD2EID(self, $1);}
| keyword_true {$$ = KWD2EID(true, $1);}
| keyword_false {$$ = KWD2EID(false, $1);}
| keyword__FILE__ {$$ = KWD2EID(_FILE__, $1);}
| keyword__LINE__ {$$ = KWD2EID(_LINE__, $1);}
| keyword__ENCODING__ {$$ = KWD2EID(_ENCODING__, $1);}
;
var_ref : user_variable
{
/*%%%*/
if (!($$ = gettable(p, $1, &@$))) $$ = NEW_BEGIN(0, &@$);
/*%
if (id_is_var(p, get_id($1))) {
$$ = dispatch1(var_ref, $1);
}
else {
$$ = dispatch1(vcall, $1);
}
%*/
}
| keyword_variable
{
/*%%%*/
if (!($$ = gettable(p, $1, &@$))) $$ = NEW_BEGIN(0, &@$);
/*% %*/
/*% ripper: var_ref!($1) %*/
}
;
var_lhs : user_variable
{
/*%%%*/
$$ = assignable(p, $1, 0, &@$);
/*% %*/
/*% ripper: assignable(p, var_field(p, $1)) %*/
}
| keyword_variable
{
/*%%%*/
$$ = assignable(p, $1, 0, &@$);
/*% %*/
/*% ripper: assignable(p, var_field(p, $1)) %*/
}
;
backref : tNTH_REF
| tBACK_REF
;
superclass : '<'
{
SET_LEX_STATE(EXPR_BEG);
p->command_start = TRUE;
}
expr_value term
{
$$ = $3;
}
| /* none */
{
/*%%%*/
$$ = 0;
/*% %*/
/*% ripper: Qnil %*/
}
;
f_arglist : '(' f_args rparen
{
/*%%%*/
$$ = $2;
/*% %*/
/*% ripper: paren!($2) %*/
SET_LEX_STATE(EXPR_BEG);
p->command_start = TRUE;
}
| '(' args_forward rparen
{
arg_var(p, idFWD_REST);
#if idFWD_KWREST
arg_var(p, idFWD_KWREST);
#endif
arg_var(p, idFWD_BLOCK);
/*%%%*/
$$ = new_args_tail(p, Qnone, idFWD_KWREST, idFWD_BLOCK, &@2);
$$ = new_args(p, Qnone, Qnone, idFWD_REST, Qnone, $$, &@2);
/*% %*/
/*% ripper: paren!(params_new(Qnone, Qnone, $2, Qnone, Qnone, Qnone, Qnone)) %*/
SET_LEX_STATE(EXPR_BEG);
p->command_start = TRUE;
}
| {
$<num>$ = p->in_kwarg;
p->in_kwarg = 1;
SET_LEX_STATE(p->lex.state|EXPR_LABEL); /* force for args */
}
f_args term
{
p->in_kwarg = !!$<num>1;
$$ = $2;
SET_LEX_STATE(EXPR_BEG);
p->command_start = TRUE;
}
;
args_tail : f_kwarg ',' f_kwrest opt_f_block_arg
{
$$ = new_args_tail(p, $1, $3, $4, &@3);
}
| f_kwarg opt_f_block_arg
{
$$ = new_args_tail(p, $1, Qnone, $2, &@1);
}
| f_kwrest opt_f_block_arg
{
$$ = new_args_tail(p, Qnone, $1, $2, &@1);
}
| f_no_kwarg opt_f_block_arg
{
$$ = new_args_tail(p, Qnone, ID2VAL(idNil), $2, &@1);
}
| f_block_arg
{
$$ = new_args_tail(p, Qnone, Qnone, $1, &@1);
}
;
opt_args_tail : ',' args_tail
{
$$ = $2;
}
| /* none */
{
$$ = new_args_tail(p, Qnone, Qnone, Qnone, &@0);
}
;
f_args : f_arg ',' f_optarg ',' f_rest_arg opt_args_tail
{
$$ = new_args(p, $1, $3, $5, Qnone, $6, &@$);
}
| f_arg ',' f_optarg ',' f_rest_arg ',' f_arg opt_args_tail
{
$$ = new_args(p, $1, $3, $5, $7, $8, &@$);
}
| f_arg ',' f_optarg opt_args_tail
{
$$ = new_args(p, $1, $3, Qnone, Qnone, $4, &@$);
}
| f_arg ',' f_optarg ',' f_arg opt_args_tail
{
$$ = new_args(p, $1, $3, Qnone, $5, $6, &@$);
}
| f_arg ',' f_rest_arg opt_args_tail
{
$$ = new_args(p, $1, Qnone, $3, Qnone, $4, &@$);
}
| f_arg ',' f_rest_arg ',' f_arg opt_args_tail
{
$$ = new_args(p, $1, Qnone, $3, $5, $6, &@$);
}
| f_arg opt_args_tail
{
$$ = new_args(p, $1, Qnone, Qnone, Qnone, $2, &@$);
}
| f_optarg ',' f_rest_arg opt_args_tail
{
$$ = new_args(p, Qnone, $1, $3, Qnone, $4, &@$);
}
| f_optarg ',' f_rest_arg ',' f_arg opt_args_tail
{
$$ = new_args(p, Qnone, $1, $3, $5, $6, &@$);
}
| f_optarg opt_args_tail
{
$$ = new_args(p, Qnone, $1, Qnone, Qnone, $2, &@$);
}
| f_optarg ',' f_arg opt_args_tail
{
$$ = new_args(p, Qnone, $1, Qnone, $3, $4, &@$);
}
| f_rest_arg opt_args_tail
{
$$ = new_args(p, Qnone, Qnone, $1, Qnone, $2, &@$);
}
| f_rest_arg ',' f_arg opt_args_tail
{
$$ = new_args(p, Qnone, Qnone, $1, $3, $4, &@$);
}
| args_tail
{
$$ = new_args(p, Qnone, Qnone, Qnone, Qnone, $1, &@$);
}
| /* none */
{
$$ = new_args_tail(p, Qnone, Qnone, Qnone, &@0);
$$ = new_args(p, Qnone, Qnone, Qnone, Qnone, $$, &@0);
}
;
args_forward : tBDOT3
{
/*%%%*/
$$ = idDot3;
/*% %*/
/*% ripper: args_forward! %*/
}
;
f_bad_arg : tCONSTANT
{
/*%%%*/
yyerror1(&@1, "formal argument cannot be a constant");
$$ = 0;
/*% %*/
/*% ripper[error]: param_error!($1) %*/
}
| tIVAR
{
/*%%%*/
yyerror1(&@1, "formal argument cannot be an instance variable");
$$ = 0;
/*% %*/
/*% ripper[error]: param_error!($1) %*/
}
| tGVAR
{
/*%%%*/
yyerror1(&@1, "formal argument cannot be a global variable");
$$ = 0;
/*% %*/
/*% ripper[error]: param_error!($1) %*/
}
| tCVAR
{
/*%%%*/
yyerror1(&@1, "formal argument cannot be a class variable");
$$ = 0;
/*% %*/
/*% ripper[error]: param_error!($1) %*/
}
;
f_norm_arg : f_bad_arg
| tIDENTIFIER
{
formal_argument(p, get_id($1));
p->max_numparam = ORDINAL_PARAM;
$$ = $1;
}
;
f_arg_asgn : f_norm_arg
{
ID id = get_id($1);
arg_var(p, id);
p->cur_arg = id;
$$ = $1;
}
;
f_arg_item : f_arg_asgn
{
p->cur_arg = 0;
/*%%%*/
$$ = NEW_ARGS_AUX($1, 1, &NULL_LOC);
/*% %*/
/*% ripper: get_value($1) %*/
}
| tLPAREN f_margs rparen
{
/*%%%*/
ID tid = internal_id(p);
YYLTYPE loc;
loc.beg_pos = @2.beg_pos;
loc.end_pos = @2.beg_pos;
arg_var(p, tid);
if (dyna_in_block(p)) {
$2->nd_value = NEW_DVAR(tid, &loc);
}
else {
$2->nd_value = NEW_LVAR(tid, &loc);
}
$$ = NEW_ARGS_AUX(tid, 1, &NULL_LOC);
$$->nd_next = $2;
/*% %*/
/*% ripper: mlhs_paren!($2) %*/
}
;
f_arg : f_arg_item
/*% ripper[brace]: rb_ary_new3(1, get_value($1)) %*/
| f_arg ',' f_arg_item
{
/*%%%*/
$$ = $1;
$$->nd_plen++;
$$->nd_next = block_append(p, $$->nd_next, $3->nd_next);
rb_discard_node(p, $3);
/*% %*/
/*% ripper: rb_ary_push($1, get_value($3)) %*/
}
;
f_label : tLABEL
{
ID id = get_id($1);
arg_var(p, formal_argument(p, id));
p->cur_arg = id;
p->max_numparam = ORDINAL_PARAM;
$$ = $1;
}
;
f_kw : f_label arg_value
{
p->cur_arg = 0;
/*%%%*/
$$ = new_kw_arg(p, assignable(p, $1, $2, &@$), &@$);
/*% %*/
/*% ripper: rb_assoc_new(get_value(assignable(p, $1)), get_value($2)) %*/
}
| f_label
{
p->cur_arg = 0;
/*%%%*/
$$ = new_kw_arg(p, assignable(p, $1, NODE_SPECIAL_REQUIRED_KEYWORD, &@$), &@$);
/*% %*/
/*% ripper: rb_assoc_new(get_value(assignable(p, $1)), 0) %*/
}
;
f_block_kw : f_label primary_value
{
/*%%%*/
$$ = new_kw_arg(p, assignable(p, $1, $2, &@$), &@$);
/*% %*/
/*% ripper: rb_assoc_new(get_value(assignable(p, $1)), get_value($2)) %*/
}
| f_label
{
/*%%%*/
$$ = new_kw_arg(p, assignable(p, $1, NODE_SPECIAL_REQUIRED_KEYWORD, &@$), &@$);
/*% %*/
/*% ripper: rb_assoc_new(get_value(assignable(p, $1)), 0) %*/
}
;
f_block_kwarg : f_block_kw
{
/*%%%*/
$$ = $1;
/*% %*/
/*% ripper: rb_ary_new3(1, get_value($1)) %*/
}
| f_block_kwarg ',' f_block_kw
{
/*%%%*/
$$ = kwd_append($1, $3);
/*% %*/
/*% ripper: rb_ary_push($1, get_value($3)) %*/
}
;
f_kwarg : f_kw
{
/*%%%*/
$$ = $1;
/*% %*/
/*% ripper: rb_ary_new3(1, get_value($1)) %*/
}
| f_kwarg ',' f_kw
{
/*%%%*/
$$ = kwd_append($1, $3);
/*% %*/
/*% ripper: rb_ary_push($1, get_value($3)) %*/
}
;
kwrest_mark : tPOW
| tDSTAR
;
f_no_kwarg : kwrest_mark keyword_nil
{
/*%%%*/
/*% %*/
/*% ripper: nokw_param!(Qnil) %*/
}
;
f_kwrest : kwrest_mark tIDENTIFIER
{
arg_var(p, shadowing_lvar(p, get_id($2)));
/*%%%*/
$$ = $2;
/*% %*/
/*% ripper: kwrest_param!($2) %*/
}
| kwrest_mark
{
/*%%%*/
$$ = internal_id(p);
arg_var(p, $$);
/*% %*/
/*% ripper: kwrest_param!(Qnil) %*/
}
;
f_opt : f_arg_asgn '=' arg_value
{
p->cur_arg = 0;
/*%%%*/
$$ = NEW_OPT_ARG(0, assignable(p, $1, $3, &@$), &@$);
/*% %*/
/*% ripper: rb_assoc_new(get_value(assignable(p, $1)), get_value($3)) %*/
}
;
f_block_opt : f_arg_asgn '=' primary_value
{
p->cur_arg = 0;
/*%%%*/
$$ = NEW_OPT_ARG(0, assignable(p, $1, $3, &@$), &@$);
/*% %*/
/*% ripper: rb_assoc_new(get_value(assignable(p, $1)), get_value($3)) %*/
}
;
f_block_optarg : f_block_opt
{
/*%%%*/
$$ = $1;
/*% %*/
/*% ripper: rb_ary_new3(1, get_value($1)) %*/
}
| f_block_optarg ',' f_block_opt
{
/*%%%*/
$$ = opt_arg_append($1, $3);
/*% %*/
/*% ripper: rb_ary_push($1, get_value($3)) %*/
}
;
f_optarg : f_opt
{
/*%%%*/
$$ = $1;
/*% %*/
/*% ripper: rb_ary_new3(1, get_value($1)) %*/
}
| f_optarg ',' f_opt
{
/*%%%*/
$$ = opt_arg_append($1, $3);
/*% %*/
/*% ripper: rb_ary_push($1, get_value($3)) %*/
}
;
restarg_mark : '*'
| tSTAR
;
f_rest_arg : restarg_mark tIDENTIFIER
{
arg_var(p, shadowing_lvar(p, get_id($2)));
/*%%%*/
$$ = $2;
/*% %*/
/*% ripper: rest_param!($2) %*/
}
| restarg_mark
{
/*%%%*/
$$ = internal_id(p);
arg_var(p, $$);
/*% %*/
/*% ripper: rest_param!(Qnil) %*/
}
;
blkarg_mark : '&'
| tAMPER
;
f_block_arg : blkarg_mark tIDENTIFIER
{
arg_var(p, shadowing_lvar(p, get_id($2)));
/*%%%*/
$$ = $2;
/*% %*/
/*% ripper: blockarg!($2) %*/
}
;
opt_f_block_arg : ',' f_block_arg
{
$$ = $2;
}
| none
{
$$ = Qnull;
}
;
singleton : var_ref
{
value_expr($1);
$$ = $1;
}
| '(' {SET_LEX_STATE(EXPR_BEG);} expr rparen
{
/*%%%*/
switch (nd_type($3)) {
case NODE_STR:
case NODE_DSTR:
case NODE_XSTR:
case NODE_DXSTR:
case NODE_DREGX:
case NODE_LIT:
case NODE_LIST:
case NODE_ZLIST:
yyerror1(&@3, "can't define singleton method for literals");
break;
default:
value_expr($3);
break;
}
$$ = $3;
/*% %*/
/*% ripper: paren!($3) %*/
}
;
assoc_list : none
| assocs trailer
{
/*%%%*/
$$ = $1;
/*% %*/
/*% ripper: assoclist_from_args!($1) %*/
}
;
assocs : assoc
/*% ripper[brace]: rb_ary_new3(1, get_value($1)) %*/
| assocs ',' assoc
{
/*%%%*/
NODE *assocs = $1;
NODE *tail = $3;
if (!assocs) {
assocs = tail;
}
else if (tail) {
if (assocs->nd_head &&
!tail->nd_head && nd_type(tail->nd_next) == NODE_LIST &&
nd_type(tail->nd_next->nd_head) == NODE_HASH) {
/* DSTAR */
tail = tail->nd_next->nd_head->nd_head;
}
assocs = list_concat(assocs, tail);
}
$$ = assocs;
/*% %*/
/*% ripper: rb_ary_push($1, get_value($3)) %*/
}
;
assoc : arg_value tASSOC arg_value
{
/*%%%*/
if (nd_type($1) == NODE_STR) {
nd_set_type($1, NODE_LIT);
RB_OBJ_WRITE(p->ast, &$1->nd_lit, rb_fstring($1->nd_lit));
}
$$ = list_append(p, NEW_LIST($1, &@$), $3);
/*% %*/
/*% ripper: assoc_new!($1, $3) %*/
}
| tLABEL arg_value
{
/*%%%*/
$$ = list_append(p, NEW_LIST(NEW_LIT(ID2SYM($1), &@1), &@$), $2);
/*% %*/
/*% ripper: assoc_new!($1, $2) %*/
}
| tSTRING_BEG string_contents tLABEL_END arg_value
{
/*%%%*/
YYLTYPE loc = code_loc_gen(&@1, &@3);
$$ = list_append(p, NEW_LIST(dsym_node(p, $2, &loc), &loc), $4);
/*% %*/
/*% ripper: assoc_new!(dyna_symbol!($2), $4) %*/
}
| tDSTAR arg_value
{
/*%%%*/
if (nd_type($2) == NODE_HASH &&
!($2->nd_head && $2->nd_head->nd_alen)) {
static VALUE empty_hash;
if (!empty_hash) {
empty_hash = rb_obj_freeze(rb_hash_new());
rb_gc_register_mark_object(empty_hash);
}
$$ = list_append(p, NEW_LIST(0, &@$), NEW_LIT(empty_hash, &@$));
}
else
$$ = list_append(p, NEW_LIST(0, &@$), $2);
/*% %*/
/*% ripper: assoc_splat!($2) %*/
}
;
operation : tIDENTIFIER
| tCONSTANT
| tFID
;
operation2 : tIDENTIFIER
| tCONSTANT
| tFID
| op
;
operation3 : tIDENTIFIER
| tFID
| op
;
dot_or_colon : '.'
| tCOLON2
;
call_op : '.'
| tANDDOT
;
call_op2 : call_op
| tCOLON2
;
opt_terms : /* none */
| terms
;
opt_nl : /* none */
| '\n'
;
rparen : opt_nl ')'
;
rbracket : opt_nl ']'
;
trailer : /* none */
| '\n'
| ','
;
term : ';' {yyerrok;token_flush(p);}
| '\n' {token_flush(p);}
;
terms : term
| terms ';' {yyerrok;}
;
none : /* none */
{
$$ = Qnull;
}
;
%%
# undef p
# undef yylex
# undef yylval
# define yylval (*p->lval)
static int regx_options(struct parser_params*);
static int tokadd_string(struct parser_params*,int,int,int,long*,rb_encoding**,rb_encoding**);
static void tokaddmbc(struct parser_params *p, int c, rb_encoding *enc);
static enum yytokentype parse_string(struct parser_params*,rb_strterm_literal_t*);
static enum yytokentype here_document(struct parser_params*,rb_strterm_heredoc_t*);
#ifndef RIPPER
# define set_yylval_node(x) { \
YYLTYPE _cur_loc; \
rb_parser_set_location(p, &_cur_loc); \
yylval.node = (x); \
}
# define set_yylval_str(x) \
do { \
set_yylval_node(NEW_STR(x, &_cur_loc)); \
RB_OBJ_WRITTEN(p->ast, Qnil, x); \
} while(0)
# define set_yylval_literal(x) \
do { \
set_yylval_node(NEW_LIT(x, &_cur_loc)); \
RB_OBJ_WRITTEN(p->ast, Qnil, x); \
} while(0)
# define set_yylval_num(x) (yylval.num = (x))
# define set_yylval_id(x) (yylval.id = (x))
# define set_yylval_name(x) (yylval.id = (x))
# define yylval_id() (yylval.id)
#else
static inline VALUE
ripper_yylval_id(struct parser_params *p, ID x)
{
return ripper_new_yylval(p, x, ID2SYM(x), 0);
}
# define set_yylval_str(x) (yylval.val = add_mark_object(p, (x)))
# define set_yylval_num(x) (yylval.val = ripper_new_yylval(p, (x), 0, 0))
# define set_yylval_id(x) (void)(x)
# define set_yylval_name(x) (void)(yylval.val = ripper_yylval_id(p, x))
# define set_yylval_literal(x) add_mark_object(p, (x))
# define set_yylval_node(x) (void)(x)
# define yylval_id() yylval.id
# define _cur_loc NULL_LOC /* dummy */
#endif
#define set_yylval_noname() set_yylval_id(keyword_nil)
#ifndef RIPPER
#define literal_flush(p, ptr) ((p)->lex.ptok = (ptr))
#define dispatch_scan_event(p, t) ((void)0)
#define dispatch_delayed_token(p, t) ((void)0)
#define has_delayed_token(p) (0)
#else
#define literal_flush(p, ptr) ((void)(ptr))
#define yylval_rval (*(RB_TYPE_P(yylval.val, T_NODE) ? &yylval.node->nd_rval : &yylval.val))
static inline VALUE
intern_sym(const char *name)
{
ID id = rb_intern_const(name);
return ID2SYM(id);
}
static int
ripper_has_scan_event(struct parser_params *p)
{
if (p->lex.pcur < p->lex.ptok) rb_raise(rb_eRuntimeError, "lex.pcur < lex.ptok");
return p->lex.pcur > p->lex.ptok;
}
static VALUE
ripper_scan_event_val(struct parser_params *p, enum yytokentype t)
{
VALUE str = STR_NEW(p->lex.ptok, p->lex.pcur - p->lex.ptok);
VALUE rval = ripper_dispatch1(p, ripper_token2eventid(t), str);
token_flush(p);
return rval;
}
static void
ripper_dispatch_scan_event(struct parser_params *p, enum yytokentype t)
{
if (!ripper_has_scan_event(p)) return;
add_mark_object(p, yylval_rval = ripper_scan_event_val(p, t));
}
#define dispatch_scan_event(p, t) ripper_dispatch_scan_event(p, t)
static void
ripper_dispatch_delayed_token(struct parser_params *p, enum yytokentype t)
{
int saved_line = p->ruby_sourceline;
const char *saved_tokp = p->lex.ptok;
if (NIL_P(p->delayed.token)) return;
p->ruby_sourceline = p->delayed.line;
p->lex.ptok = p->lex.pbeg + p->delayed.col;
add_mark_object(p, yylval_rval = ripper_dispatch1(p, ripper_token2eventid(t), p->delayed.token));
p->delayed.token = Qnil;
p->ruby_sourceline = saved_line;
p->lex.ptok = saved_tokp;
}
#define dispatch_delayed_token(p, t) ripper_dispatch_delayed_token(p, t)
#define has_delayed_token(p) (!NIL_P(p->delayed.token))
#endif /* RIPPER */
#include "ruby/regex.h"
#include "ruby/util.h"
static inline int
is_identchar(const char *ptr, const char *MAYBE_UNUSED(ptr_end), rb_encoding *enc)
{
return rb_enc_isalnum((unsigned char)*ptr, enc) || *ptr == '_' || !ISASCII(*ptr);
}
static inline int
parser_is_identchar(struct parser_params *p)
{
return !(p)->eofp && is_identchar(p->lex.pcur-1, p->lex.pend, p->enc);
}
static inline int
parser_isascii(struct parser_params *p)
{
return ISASCII(*(p->lex.pcur-1));
}
static void
token_info_setup(token_info *ptinfo, const char *ptr, const rb_code_location_t *loc)
{
int column = 1, nonspc = 0, i;
for (i = 0; i < loc->beg_pos.column; i++, ptr++) {
if (*ptr == '\t') {
column = (((column - 1) / TAB_WIDTH) + 1) * TAB_WIDTH;
}
column++;
if (*ptr != ' ' && *ptr != '\t') {
nonspc = 1;
}
}
ptinfo->beg = loc->beg_pos;
ptinfo->indent = column;
ptinfo->nonspc = nonspc;
}
static void
token_info_push(struct parser_params *p, const char *token, const rb_code_location_t *loc)
{
token_info *ptinfo;
if (!p->token_info_enabled) return;
ptinfo = ALLOC(token_info);
ptinfo->token = token;
ptinfo->next = p->token_info;
token_info_setup(ptinfo, p->lex.pbeg, loc);
p->token_info = ptinfo;
}
static void
token_info_pop(struct parser_params *p, const char *token, const rb_code_location_t *loc)
{
token_info *ptinfo_beg = p->token_info;
if (!ptinfo_beg) return;
p->token_info = ptinfo_beg->next;
/* indentation check of matched keywords (begin..end, if..end, etc.) */
token_info_warn(p, token, ptinfo_beg, 1, loc);
ruby_sized_xfree(ptinfo_beg, sizeof(*ptinfo_beg));
}
static void
token_info_warn(struct parser_params *p, const char *token, token_info *ptinfo_beg, int same, const rb_code_location_t *loc)
{
token_info ptinfo_end_body, *ptinfo_end = &ptinfo_end_body;
if (!p->token_info_enabled) return;
if (!ptinfo_beg) return;
token_info_setup(ptinfo_end, p->lex.pbeg, loc);
if (ptinfo_beg->beg.lineno == ptinfo_end->beg.lineno) return; /* ignore one-line block */
if (ptinfo_beg->nonspc || ptinfo_end->nonspc) return; /* ignore keyword in the middle of a line */
if (ptinfo_beg->indent == ptinfo_end->indent) return; /* the indents are matched */
if (!same && ptinfo_beg->indent < ptinfo_end->indent) return;
rb_warn3L(ptinfo_end->beg.lineno,
"mismatched indentations at '%s' with '%s' at %d",
WARN_S(token), WARN_S(ptinfo_beg->token), WARN_I(ptinfo_beg->beg.lineno));
}
static int
parser_precise_mbclen(struct parser_params *p, const char *ptr)
{
int len = rb_enc_precise_mbclen(ptr, p->lex.pend, p->enc);
if (!MBCLEN_CHARFOUND_P(len)) {
compile_error(p, "invalid multibyte char (%s)", rb_enc_name(p->enc));
return -1;
}
return len;
}
#ifndef RIPPER
static void ruby_show_error_line(VALUE errbuf, const YYLTYPE *yylloc, int lineno, VALUE str);
static inline void
parser_show_error_line(struct parser_params *p, const YYLTYPE *yylloc)
{
ruby_show_error_line(p->error_buffer, yylloc, p->ruby_sourceline, p->lex.lastline);
}
static int
parser_yyerror(struct parser_params *p, const YYLTYPE *yylloc, const char *msg)
{
YYLTYPE current;
if (!yylloc) {
yylloc = RUBY_SET_YYLLOC(current);
}
else if ((p->ruby_sourceline != yylloc->beg_pos.lineno &&
p->ruby_sourceline != yylloc->end_pos.lineno) ||
(yylloc->beg_pos.lineno == yylloc->end_pos.lineno &&
yylloc->beg_pos.column == yylloc->end_pos.column)) {
yylloc = 0;
}
compile_error(p, "%s", msg);
parser_show_error_line(p, yylloc);
return 0;
}
static void
ruby_show_error_line(VALUE errbuf, const YYLTYPE *yylloc, int lineno, VALUE str)
{
VALUE mesg;
const int max_line_margin = 30;
const char *ptr, *ptr_end, *pt, *pb;
const char *pre = "", *post = "", *pend;
const char *code = "", *caret = "";
const char *lim;
const char *const pbeg = RSTRING_PTR(str);
char *buf;
long len;
int i;
if (!yylloc) return;
pend = RSTRING_END(str);
if (pend > pbeg && pend[-1] == '\n') {
if (--pend > pbeg && pend[-1] == '\r') --pend;
}
pt = pend;
if (lineno == yylloc->end_pos.lineno &&
(pend - pbeg) > yylloc->end_pos.column) {
pt = pbeg + yylloc->end_pos.column;
}
ptr = ptr_end = pt;
lim = ptr - pbeg > max_line_margin ? ptr - max_line_margin : pbeg;
while ((lim < ptr) && (*(ptr-1) != '\n')) ptr--;
lim = pend - ptr_end > max_line_margin ? ptr_end + max_line_margin : pend;
while ((ptr_end < lim) && (*ptr_end != '\n') && (*ptr_end != '\r')) ptr_end++;
len = ptr_end - ptr;
if (len > 4) {
if (ptr > pbeg) {
ptr = rb_enc_prev_char(pbeg, ptr, pt, rb_enc_get(str));
if (ptr > pbeg) pre = "...";
}
if (ptr_end < pend) {
ptr_end = rb_enc_prev_char(pt, ptr_end, pend, rb_enc_get(str));
if (ptr_end < pend) post = "...";
}
}
pb = pbeg;
if (lineno == yylloc->beg_pos.lineno) {
pb += yylloc->beg_pos.column;
if (pb > pt) pb = pt;
}
if (pb < ptr) pb = ptr;
if (len <= 4 && yylloc->beg_pos.lineno == yylloc->end_pos.lineno) {
return;
}
if (RTEST(errbuf)) {
mesg = rb_attr_get(errbuf, idMesg);
if (RSTRING_LEN(mesg) > 0 && *(RSTRING_END(mesg)-1) != '\n')
rb_str_cat_cstr(mesg, "\n");
}
else {
mesg = rb_enc_str_new(0, 0, rb_enc_get(str));
}
if (!errbuf && rb_stderr_tty_p()) {
#define CSI_BEGIN "\033["
#define CSI_SGR "m"
rb_str_catf(mesg,
CSI_BEGIN""CSI_SGR"%s" /* pre */
CSI_BEGIN"1"CSI_SGR"%.*s"
CSI_BEGIN"1;4"CSI_SGR"%.*s"
CSI_BEGIN";1"CSI_SGR"%.*s"
CSI_BEGIN""CSI_SGR"%s" /* post */
"\n",
pre,
(int)(pb - ptr), ptr,
(int)(pt - pb), pb,
(int)(ptr_end - pt), pt,
post);
}
else {
char *p2;
len = ptr_end - ptr;
lim = pt < pend ? pt : pend;
i = (int)(lim - ptr);
buf = ALLOCA_N(char, i+2);
code = ptr;
caret = p2 = buf;
if (ptr <= pb) {
while (ptr < pb) {
*p2++ = *ptr++ == '\t' ? '\t' : ' ';
}
*p2++ = '^';
ptr++;
}
if (lim > ptr) {
memset(p2, '~', (lim - ptr));
p2 += (lim - ptr);
}
*p2 = '\0';
rb_str_catf(mesg, "%s%.*s%s\n""%s%s\n",
pre, (int)len, code, post,
pre, caret);
}
if (!errbuf) rb_write_error_str(mesg);
}
#else
static int
parser_yyerror(struct parser_params *p, const YYLTYPE *yylloc, const char *msg)
{
dispatch1(parse_error, STR_NEW2(msg));
ripper_error(p);
return 0;
}
static inline void
parser_show_error_line(struct parser_params *p, const YYLTYPE *yylloc)
{
}
#endif /* !RIPPER */
#ifndef RIPPER
static int
vtable_size(const struct vtable *tbl)
{
if (!DVARS_TERMINAL_P(tbl)) {
return tbl->pos;
}
else {
return 0;
}
}
#endif
static struct vtable *
vtable_alloc_gen(struct parser_params *p, int line, struct vtable *prev)
{
struct vtable *tbl = ALLOC(struct vtable);
tbl->pos = 0;
tbl->capa = 8;
tbl->tbl = ALLOC_N(ID, tbl->capa);
tbl->prev = prev;
#ifndef RIPPER
if (p->debug) {
rb_parser_printf(p, "vtable_alloc:%d: %p\n", line, (void *)tbl);
}
#endif
return tbl;
}
#define vtable_alloc(prev) vtable_alloc_gen(p, __LINE__, prev)
static void
vtable_free_gen(struct parser_params *p, int line, const char *name,
struct vtable *tbl)
{
#ifndef RIPPER
if (p->debug) {
rb_parser_printf(p, "vtable_free:%d: %s(%p)\n", line, name, (void *)tbl);
}
#endif
if (!DVARS_TERMINAL_P(tbl)) {
if (tbl->tbl) {
ruby_sized_xfree(tbl->tbl, tbl->capa * sizeof(ID));
}
ruby_sized_xfree(tbl, sizeof(tbl));
}
}
#define vtable_free(tbl) vtable_free_gen(p, __LINE__, #tbl, tbl)
static void
vtable_add_gen(struct parser_params *p, int line, const char *name,
struct vtable *tbl, ID id)
{
#ifndef RIPPER
if (p->debug) {
rb_parser_printf(p, "vtable_add:%d: %s(%p), %s\n",
line, name, (void *)tbl, rb_id2name(id));
}
#endif
if (DVARS_TERMINAL_P(tbl)) {
rb_parser_fatal(p, "vtable_add: vtable is not allocated (%p)", (void *)tbl);
return;
}
if (tbl->pos == tbl->capa) {
tbl->capa = tbl->capa * 2;
SIZED_REALLOC_N(tbl->tbl, ID, tbl->capa, tbl->pos);
}
tbl->tbl[tbl->pos++] = id;
}
#define vtable_add(tbl, id) vtable_add_gen(p, __LINE__, #tbl, tbl, id)
#ifndef RIPPER
static void
vtable_pop_gen(struct parser_params *p, int line, const char *name,
struct vtable *tbl, int n)
{
if (p->debug) {
rb_parser_printf(p, "vtable_pop:%d: %s(%p), %d\n",
line, name, (void *)tbl, n);
}
if (tbl->pos < n) {
rb_parser_fatal(p, "vtable_pop: unreachable (%d < %d)", tbl->pos, n);
return;
}
tbl->pos -= n;
}
#define vtable_pop(tbl, n) vtable_pop_gen(p, __LINE__, #tbl, tbl, n)
#endif
static int
vtable_included(const struct vtable * tbl, ID id)
{
int i;
if (!DVARS_TERMINAL_P(tbl)) {
for (i = 0; i < tbl->pos; i++) {
if (tbl->tbl[i] == id) {
return i+1;
}
}
}
return 0;
}
static void parser_prepare(struct parser_params *p);
#ifndef RIPPER
static NODE *parser_append_options(struct parser_params *p, NODE *node);
static VALUE
debug_lines(VALUE fname)
{
ID script_lines;
CONST_ID(script_lines, "SCRIPT_LINES__");
if (rb_const_defined_at(rb_cObject, script_lines)) {
VALUE hash = rb_const_get_at(rb_cObject, script_lines);
if (RB_TYPE_P(hash, T_HASH)) {
VALUE lines = rb_ary_new();
rb_hash_aset(hash, fname, lines);
return lines;
}
}
return 0;
}
static int
e_option_supplied(struct parser_params *p)
{
return strcmp(p->ruby_sourcefile, "-e") == 0;
}
static VALUE
yycompile0(VALUE arg)
{
int n;
NODE *tree;
struct parser_params *p = (struct parser_params *)arg;
VALUE cov = Qfalse;
if (!compile_for_eval && rb_safe_level() == 0 && !NIL_P(p->ruby_sourcefile_string)) {
p->debug_lines = debug_lines(p->ruby_sourcefile_string);
if (p->debug_lines && p->ruby_sourceline > 0) {
VALUE str = STR_NEW0();
n = p->ruby_sourceline;
do {
rb_ary_push(p->debug_lines, str);
} while (--n);
}
if (!e_option_supplied(p)) {
cov = Qtrue;
}
}
parser_prepare(p);
#define RUBY_DTRACE_PARSE_HOOK(name) \
if (RUBY_DTRACE_PARSE_##name##_ENABLED()) { \
RUBY_DTRACE_PARSE_##name(p->ruby_sourcefile, p->ruby_sourceline); \
}
RUBY_DTRACE_PARSE_HOOK(BEGIN);
n = yyparse(p);
RUBY_DTRACE_PARSE_HOOK(END);
p->debug_lines = 0;
p->lex.strterm = 0;
p->lex.pcur = p->lex.pbeg = p->lex.pend = 0;
p->lex.prevline = p->lex.lastline = p->lex.nextline = 0;
if (n || p->error_p) {
VALUE mesg = p->error_buffer;
if (!mesg) {
mesg = rb_class_new_instance(0, 0, rb_eSyntaxError);
}
rb_set_errinfo(mesg);
return FALSE;
}
tree = p->eval_tree;
if (!tree) {
tree = NEW_NIL(&NULL_LOC);
}
else {
VALUE opt = p->compile_option;
NODE *prelude;
NODE *body = parser_append_options(p, tree->nd_body);
if (!opt) opt = rb_obj_hide(rb_ident_hash_new());
rb_hash_aset(opt, rb_sym_intern_ascii_cstr("coverage_enabled"), cov);
prelude = block_append(p, p->eval_tree_begin, body);
tree->nd_body = prelude;
RB_OBJ_WRITE(p->ast, &p->ast->body.compile_option, opt);
}
p->ast->body.root = tree;
p->ast->body.line_count = p->line_count;
return TRUE;
}
static rb_ast_t *
yycompile(VALUE vparser, struct parser_params *p, VALUE fname, int line)
{
rb_ast_t *ast;
if (NIL_P(fname)) {
p->ruby_sourcefile_string = Qnil;
p->ruby_sourcefile = "(none)";
}
else {
p->ruby_sourcefile_string = rb_fstring(fname);
p->ruby_sourcefile = StringValueCStr(fname);
}
p->ruby_sourceline = line - 1;
p->ast = ast = rb_ast_new();
rb_suppress_tracing(yycompile0, (VALUE)p);
p->ast = 0;
RB_GC_GUARD(vparser); /* prohibit tail call optimization */
return ast;
}
#endif /* !RIPPER */
static rb_encoding *
must_be_ascii_compatible(VALUE s)
{
rb_encoding *enc = rb_enc_get(s);
if (!rb_enc_asciicompat(enc)) {
rb_raise(rb_eArgError, "invalid source encoding");
}
return enc;
}
static VALUE
lex_get_str(struct parser_params *p, VALUE s)
{
char *beg, *end, *start;
long len;
beg = RSTRING_PTR(s);
len = RSTRING_LEN(s);
start = beg;
if (p->lex.gets_.ptr) {
if (len == p->lex.gets_.ptr) return Qnil;
beg += p->lex.gets_.ptr;
len -= p->lex.gets_.ptr;
}
end = memchr(beg, '\n', len);
if (end) len = ++end - beg;
p->lex.gets_.ptr += len;
return rb_str_subseq(s, beg - start, len);
}
static VALUE
lex_getline(struct parser_params *p)
{
VALUE line = (*p->lex.gets)(p, p->lex.input);
if (NIL_P(line)) return line;
must_be_ascii_compatible(line);
#ifndef RIPPER
if (p->debug_lines) {
rb_enc_associate(line, p->enc);
rb_ary_push(p->debug_lines, line);
}
#endif
p->line_count++;
return line;
}
static const rb_data_type_t parser_data_type;
#ifndef RIPPER
static rb_ast_t*
parser_compile_string(VALUE vparser, VALUE fname, VALUE s, int line)
{
struct parser_params *p;
TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, p);
p->lex.gets = lex_get_str;
p->lex.gets_.ptr = 0;
p->lex.input = rb_str_new_frozen(s);
p->lex.pbeg = p->lex.pcur = p->lex.pend = 0;
return yycompile(vparser, p, fname, line);
}
rb_ast_t*
rb_compile_string(const char *f, VALUE s, int line)
{
must_be_ascii_compatible(s);
return parser_compile_string(rb_parser_new(), rb_filesystem_str_new_cstr(f), s, line);
}
rb_ast_t*
rb_parser_compile_string(VALUE vparser, const char *f, VALUE s, int line)
{
return rb_parser_compile_string_path(vparser, rb_filesystem_str_new_cstr(f), s, line);
}
rb_ast_t*
rb_parser_compile_string_path(VALUE vparser, VALUE f, VALUE s, int line)
{
must_be_ascii_compatible(s);
return parser_compile_string(vparser, f, s, line);
}
rb_ast_t*
rb_compile_cstr(const char *f, const char *s, int len, int line)
{
VALUE str = rb_str_new(s, len);
return parser_compile_string(rb_parser_new(), rb_filesystem_str_new_cstr(f), str, line);
}
rb_ast_t*
rb_parser_compile_cstr(VALUE vparser, const char *f, const char *s, int len, int line)
{
VALUE str = rb_str_new(s, len);
return parser_compile_string(vparser, rb_filesystem_str_new_cstr(f), str, line);
}
VALUE rb_io_gets_internal(VALUE io);
static VALUE
lex_io_gets(struct parser_params *p, VALUE io)
{
return rb_io_gets_internal(io);
}
rb_ast_t*
rb_compile_file(const char *f, VALUE file, int start)
{
VALUE vparser = rb_parser_new();
return rb_parser_compile_file(vparser, f, file, start);
}
rb_ast_t*
rb_parser_compile_file(VALUE vparser, const char *f, VALUE file, int start)
{
return rb_parser_compile_file_path(vparser, rb_filesystem_str_new_cstr(f), file, start);
}
rb_ast_t*
rb_parser_compile_file_path(VALUE vparser, VALUE fname, VALUE file, int start)
{
struct parser_params *p;
TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, p);
p->lex.gets = lex_io_gets;
p->lex.input = file;
p->lex.pbeg = p->lex.pcur = p->lex.pend = 0;
return yycompile(vparser, p, fname, start);
}
static VALUE
lex_generic_gets(struct parser_params *p, VALUE input)
{
return (*p->lex.gets_.call)(input, p->line_count);
}
rb_ast_t*
rb_parser_compile_generic(VALUE vparser, VALUE (*lex_gets)(VALUE, int), VALUE fname, VALUE input, int start)
{
struct parser_params *p;
TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, p);
p->lex.gets = lex_generic_gets;
p->lex.gets_.call = lex_gets;
p->lex.input = input;
p->lex.pbeg = p->lex.pcur = p->lex.pend = 0;
return yycompile(vparser, p, fname, start);
}
#endif /* !RIPPER */
#define STR_FUNC_ESCAPE 0x01
#define STR_FUNC_EXPAND 0x02
#define STR_FUNC_REGEXP 0x04
#define STR_FUNC_QWORDS 0x08
#define STR_FUNC_SYMBOL 0x10
#define STR_FUNC_INDENT 0x20
#define STR_FUNC_LABEL 0x40
#define STR_FUNC_LIST 0x4000
#define STR_FUNC_TERM 0x8000
enum string_type {
str_label = STR_FUNC_LABEL,
str_squote = (0),
str_dquote = (STR_FUNC_EXPAND),
str_xquote = (STR_FUNC_EXPAND),
str_regexp = (STR_FUNC_REGEXP|STR_FUNC_ESCAPE|STR_FUNC_EXPAND),
str_sword = (STR_FUNC_QWORDS|STR_FUNC_LIST),
str_dword = (STR_FUNC_QWORDS|STR_FUNC_EXPAND|STR_FUNC_LIST),
str_ssym = (STR_FUNC_SYMBOL),
str_dsym = (STR_FUNC_SYMBOL|STR_FUNC_EXPAND)
};
static VALUE
parser_str_new(const char *ptr, long len, rb_encoding *enc, int func, rb_encoding *enc0)
{
VALUE str;
str = rb_enc_str_new(ptr, len, enc);
if (!(func & STR_FUNC_REGEXP) && rb_enc_asciicompat(enc)) {
if (rb_enc_str_coderange(str) == ENC_CODERANGE_7BIT) {
}
else if (enc0 == rb_usascii_encoding() && enc != rb_utf8_encoding()) {
rb_enc_associate(str, rb_ascii8bit_encoding());
}
}
return str;
}
#define lex_goto_eol(p) ((p)->lex.pcur = (p)->lex.pend)
#define lex_eol_p(p) ((p)->lex.pcur >= (p)->lex.pend)
#define lex_eol_n_p(p,n) ((p)->lex.pcur+(n) >= (p)->lex.pend)
#define peek(p,c) peek_n(p, (c), 0)
#define peek_n(p,c,n) (!lex_eol_n_p(p, n) && (c) == (unsigned char)(p)->lex.pcur[n])
#define peekc(p) peekc_n(p, 0)
#define peekc_n(p,n) (lex_eol_n_p(p, n) ? -1 : (unsigned char)(p)->lex.pcur[n])
#ifdef RIPPER
static void
add_delayed_token(struct parser_params *p, const char *tok, const char *end)
{
if (tok < end) {
if (!has_delayed_token(p)) {
p->delayed.token = rb_str_buf_new(end - tok);
rb_enc_associate(p->delayed.token, p->enc);
p->delayed.line = p->ruby_sourceline;
p->delayed.col = rb_long2int(tok - p->lex.pbeg);
}
rb_str_buf_cat(p->delayed.token, tok, end - tok);
p->lex.ptok = end;
}
}
#else
#define add_delayed_token(p, tok, end) ((void)(tok), (void)(end))
#endif
static int
nextline(struct parser_params *p)
{
VALUE v = p->lex.nextline;
p->lex.nextline = 0;
if (!v) {
if (p->eofp)
return -1;
if (p->lex.pend > p->lex.pbeg && *(p->lex.pend-1) != '\n') {
goto end_of_input;
}
if (!p->lex.input || NIL_P(v = lex_getline(p))) {
end_of_input:
p->eofp = 1;
lex_goto_eol(p);
return -1;
}
p->cr_seen = FALSE;
}
else if (NIL_P(v)) {
/* after here-document without terminator */
goto end_of_input;
}
add_delayed_token(p, p->lex.ptok, p->lex.pend);
if (p->heredoc_end > 0) {
p->ruby_sourceline = p->heredoc_end;
p->heredoc_end = 0;
}
p->ruby_sourceline++;
p->lex.pbeg = p->lex.pcur = RSTRING_PTR(v);
p->lex.pend = p->lex.pcur + RSTRING_LEN(v);
token_flush(p);
p->lex.prevline = p->lex.lastline;
p->lex.lastline = v;
return 0;
}
static int
parser_cr(struct parser_params *p, int c)
{
if (peek(p, '\n')) {
p->lex.pcur++;
c = '\n';
}
else if (!p->cr_seen) {
p->cr_seen = TRUE;
/* carried over with p->lex.nextline for nextc() */
rb_warn0("encountered \\r in middle of line, treated as a mere space");
}
return c;
}
static inline int
nextc(struct parser_params *p)
{
int c;
if (UNLIKELY((p->lex.pcur == p->lex.pend) || p->eofp || RTEST(p->lex.nextline))) {
if (nextline(p)) return -1;
}
c = (unsigned char)*p->lex.pcur++;
if (UNLIKELY(c == '\r')) {
c = parser_cr(p, c);
}
return c;
}
static void
pushback(struct parser_params *p, int c)
{
if (c == -1) return;
p->lex.pcur--;
if (p->lex.pcur > p->lex.pbeg && p->lex.pcur[0] == '\n' && p->lex.pcur[-1] == '\r') {
p->lex.pcur--;
}
}
#define was_bol(p) ((p)->lex.pcur == (p)->lex.pbeg + 1)
#define tokfix(p) ((p)->tokenbuf[(p)->tokidx]='\0')
#define tok(p) (p)->tokenbuf
#define toklen(p) (p)->tokidx
static int
looking_at_eol_p(struct parser_params *p)
{
const char *ptr = p->lex.pcur;
while (ptr < p->lex.pend) {
int c = (unsigned char)*ptr++;
int eol = (c == '\n' || c == '#');
if (eol || !ISSPACE(c)) {
return eol;
}
}
return TRUE;
}
static char*
newtok(struct parser_params *p)
{
p->tokidx = 0;
p->tokline = p->ruby_sourceline;
if (!p->tokenbuf) {
p->toksiz = 60;
p->tokenbuf = ALLOC_N(char, 60);
}
if (p->toksiz > 4096) {
p->toksiz = 60;
REALLOC_N(p->tokenbuf, char, 60);
}
return p->tokenbuf;
}
static char *
tokspace(struct parser_params *p, int n)
{
p->tokidx += n;
if (p->tokidx >= p->toksiz) {
do {p->toksiz *= 2;} while (p->toksiz < p->tokidx);
REALLOC_N(p->tokenbuf, char, p->toksiz);
}
return &p->tokenbuf[p->tokidx-n];
}
static void
tokadd(struct parser_params *p, int c)
{
p->tokenbuf[p->tokidx++] = (char)c;
if (p->tokidx >= p->toksiz) {
p->toksiz *= 2;
REALLOC_N(p->tokenbuf, char, p->toksiz);
}
}
static int
tok_hex(struct parser_params *p, size_t *numlen)
{
int c;
c = scan_hex(p->lex.pcur, 2, numlen);
if (!*numlen) {
yyerror0("invalid hex escape");
token_flush(p);
return 0;
}
p->lex.pcur += *numlen;
return c;
}
#define tokcopy(p, n) memcpy(tokspace(p, n), (p)->lex.pcur - (n), (n))
static int
escaped_control_code(int c)
{
int c2 = 0;
switch (c) {
case ' ':
c2 = 's';
break;
case '\n':
c2 = 'n';
break;
case '\t':
c2 = 't';
break;
case '\v':
c2 = 'v';
break;
case '\r':
c2 = 'r';
break;
case '\f':
c2 = 'f';
break;
}
return c2;
}
#define WARN_SPACE_CHAR(c, prefix) \
rb_warn1("invalid character syntax; use "prefix"\\%c", WARN_I(c2))
static int
tokadd_codepoint(struct parser_params *p, rb_encoding **encp,
int regexp_literal, int wide)
{
size_t numlen;
int codepoint = scan_hex(p->lex.pcur, wide ? p->lex.pend - p->lex.pcur : 4, &numlen);
literal_flush(p, p->lex.pcur);
p->lex.pcur += numlen;
if (wide ? (numlen == 0 || numlen > 6) : (numlen < 4)) {
yyerror0("invalid Unicode escape");
return wide && numlen > 0;
}
if (codepoint > 0x10ffff) {
yyerror0("invalid Unicode codepoint (too large)");
return wide;
}
if ((codepoint & 0xfffff800) == 0xd800) {
yyerror0("invalid Unicode codepoint");
return wide;
}
if (regexp_literal) {
tokcopy(p, (int)numlen);
}
else if (codepoint >= 0x80) {
rb_encoding *utf8 = rb_utf8_encoding();
if (*encp && utf8 != *encp) {
YYLTYPE loc = RUBY_INIT_YYLLOC();
compile_error(p, "UTF-8 mixed within %s source", rb_enc_name(*encp));
parser_show_error_line(p, &loc);
return wide;
}
*encp = utf8;
tokaddmbc(p, codepoint, *encp);
}
else {
tokadd(p, codepoint);
}
return TRUE;
}
/* return value is for ?\u3042 */
static void
tokadd_utf8(struct parser_params *p, rb_encoding **encp,
int term, int symbol_literal, int regexp_literal)
{
/*
* If `term` is not -1, then we allow multiple codepoints in \u{}
* upto `term` byte, otherwise we're parsing a character literal.
* And then add the codepoints to the current token.
*/
static const char multiple_codepoints[] = "Multiple codepoints at single character literal";
const int open_brace = '{', close_brace = '}';
if (regexp_literal) { tokadd(p, '\\'); tokadd(p, 'u'); }
if (peek(p, open_brace)) { /* handle \u{...} form */
const char *second = NULL;
int c, last = nextc(p);
if (p->lex.pcur >= p->lex.pend) goto unterminated;
while (ISSPACE(c = *p->lex.pcur) && ++p->lex.pcur < p->lex.pend);
while (c != close_brace) {
if (c == term) goto unterminated;
if (second == multiple_codepoints)
second = p->lex.pcur;
if (regexp_literal) tokadd(p, last);
if (!tokadd_codepoint(p, encp, regexp_literal, TRUE)) {
break;
}
while (ISSPACE(c = *p->lex.pcur)) {
if (++p->lex.pcur >= p->lex.pend) goto unterminated;
last = c;
}
if (term == -1 && !second)
second = multiple_codepoints;
}
if (c != close_brace) {
unterminated:
token_flush(p);
yyerror0("unterminated Unicode escape");
return;
}
if (second && second != multiple_codepoints) {
const char *pcur = p->lex.pcur;
p->lex.pcur = second;
dispatch_scan_event(p, tSTRING_CONTENT);
token_flush(p);
p->lex.pcur = pcur;
yyerror0(multiple_codepoints);
token_flush(p);
}
if (regexp_literal) tokadd(p, close_brace);
nextc(p);
}
else { /* handle \uxxxx form */
if (!tokadd_codepoint(p, encp, regexp_literal, FALSE)) {
token_flush(p);
return;
}
}
}
#define ESCAPE_CONTROL 1
#define ESCAPE_META 2
static int
read_escape(struct parser_params *p, int flags, rb_encoding **encp)
{
int c;
size_t numlen;
switch (c = nextc(p)) {
case '\\': /* Backslash */
return c;
case 'n': /* newline */
return '\n';
case 't': /* horizontal tab */
return '\t';
case 'r': /* carriage-return */
return '\r';
case 'f': /* form-feed */
return '\f';
case 'v': /* vertical tab */
return '\13';
case 'a': /* alarm(bell) */
return '\007';
case 'e': /* escape */
return 033;
case '0': case '1': case '2': case '3': /* octal constant */
case '4': case '5': case '6': case '7':
pushback(p, c);
c = scan_oct(p->lex.pcur, 3, &numlen);
p->lex.pcur += numlen;
return c;
case 'x': /* hex constant */
c = tok_hex(p, &numlen);
if (numlen == 0) return 0;
return c;
case 'b': /* backspace */
return '\010';
case 's': /* space */
return ' ';
case 'M':
if (flags & ESCAPE_META) goto eof;
if ((c = nextc(p)) != '-') {
goto eof;
}
if ((c = nextc(p)) == '\\') {
if (peek(p, 'u')) goto eof;
return read_escape(p, flags|ESCAPE_META, encp) | 0x80;
}
else if (c == -1 || !ISASCII(c)) goto eof;
else {
int c2 = escaped_control_code(c);
if (c2) {
if (ISCNTRL(c) || !(flags & ESCAPE_CONTROL)) {
WARN_SPACE_CHAR(c2, "\\M-");
}
else {
WARN_SPACE_CHAR(c2, "\\C-\\M-");
}
}
else if (ISCNTRL(c)) goto eof;
return ((c & 0xff) | 0x80);
}
case 'C':
if ((c = nextc(p)) != '-') {
goto eof;
}
case 'c':
if (flags & ESCAPE_CONTROL) goto eof;
if ((c = nextc(p))== '\\') {
if (peek(p, 'u')) goto eof;
c = read_escape(p, flags|ESCAPE_CONTROL, encp);
}
else if (c == '?')
return 0177;
else if (c == -1 || !ISASCII(c)) goto eof;
else {
int c2 = escaped_control_code(c);
if (c2) {
if (ISCNTRL(c)) {
if (flags & ESCAPE_META) {
WARN_SPACE_CHAR(c2, "\\M-");
}
else {
WARN_SPACE_CHAR(c2, "");
}
}
else {
if (flags & ESCAPE_META) {
WARN_SPACE_CHAR(c2, "\\M-\\C-");
}
else {
WARN_SPACE_CHAR(c2, "\\C-");
}
}
}
else if (ISCNTRL(c)) goto eof;
}
return c & 0x9f;
eof:
case -1:
yyerror0("Invalid escape character syntax");
token_flush(p);
return '\0';
default:
return c;
}
}
static void
tokaddmbc(struct parser_params *p, int c, rb_encoding *enc)
{
int len = rb_enc_codelen(c, enc);
rb_enc_mbcput(c, tokspace(p, len), enc);
}
static int
tokadd_escape(struct parser_params *p, rb_encoding **encp)
{
int c;
int flags = 0;
size_t numlen;
first:
switch (c = nextc(p)) {
case '\n':
return 0; /* just ignore */
case '0': case '1': case '2': case '3': /* octal constant */
case '4': case '5': case '6': case '7':
{
ruby_scan_oct(--p->lex.pcur, 3, &numlen);
if (numlen == 0) goto eof;
p->lex.pcur += numlen;
tokcopy(p, (int)numlen + 1);
}
return 0;
case 'x': /* hex constant */
{
tok_hex(p, &numlen);
if (numlen == 0) return -1;
tokcopy(p, (int)numlen + 2);
}
return 0;
case 'M':
if (flags & ESCAPE_META) goto eof;
if ((c = nextc(p)) != '-') {
pushback(p, c);
goto eof;
}
tokcopy(p, 3);
flags |= ESCAPE_META;
goto escaped;
case 'C':
if (flags & ESCAPE_CONTROL) goto eof;
if ((c = nextc(p)) != '-') {
pushback(p, c);
goto eof;
}
tokcopy(p, 3);
goto escaped;
case 'c':
if (flags & ESCAPE_CONTROL) goto eof;
tokcopy(p, 2);
flags |= ESCAPE_CONTROL;
escaped:
if ((c = nextc(p)) == '\\') {
goto first;
}
else if (c == -1) goto eof;
tokadd(p, c);
return 0;
eof:
case -1:
yyerror0("Invalid escape character syntax");
token_flush(p);
return -1;
default:
tokadd(p, '\\');
tokadd(p, c);
}
return 0;
}
static int
regx_options(struct parser_params *p)
{
int kcode = 0;
int kopt = 0;
int options = 0;
int c, opt, kc;
newtok(p);
while (c = nextc(p), ISALPHA(c)) {
if (c == 'o') {
options |= RE_OPTION_ONCE;
}
else if (rb_char_to_option_kcode(c, &opt, &kc)) {
if (kc >= 0) {
if (kc != rb_ascii8bit_encindex()) kcode = c;
kopt = opt;
}
else {
options |= opt;
}
}
else {
tokadd(p, c);
}
}
options |= kopt;
pushback(p, c);
if (toklen(p)) {
YYLTYPE loc = RUBY_INIT_YYLLOC();
tokfix(p);
compile_error(p, "unknown regexp option%s - %*s",
toklen(p) > 1 ? "s" : "", toklen(p), tok(p));
parser_show_error_line(p, &loc);
}
return options | RE_OPTION_ENCODING(kcode);
}
static int
tokadd_mbchar(struct parser_params *p, int c)
{
int len = parser_precise_mbclen(p, p->lex.pcur-1);
if (len < 0) return -1;
tokadd(p, c);
p->lex.pcur += --len;
if (len > 0) tokcopy(p, len);
return c;
}
static inline int
simple_re_meta(int c)
{
switch (c) {
case '$': case '*': case '+': case '.':
case '?': case '^': case '|':
case ')': case ']': case '}': case '>':
return TRUE;
default:
return FALSE;
}
}
static int
parser_update_heredoc_indent(struct parser_params *p, int c)
{
if (p->heredoc_line_indent == -1) {
if (c == '\n') p->heredoc_line_indent = 0;
}
else {
if (c == ' ') {
p->heredoc_line_indent++;
return TRUE;
}
else if (c == '\t') {
int w = (p->heredoc_line_indent / TAB_WIDTH) + 1;
p->heredoc_line_indent = w * TAB_WIDTH;
return TRUE;
}
else if (c != '\n') {
if (p->heredoc_indent > p->heredoc_line_indent) {
p->heredoc_indent = p->heredoc_line_indent;
}
p->heredoc_line_indent = -1;
}
}
return FALSE;
}
static void
parser_mixed_error(struct parser_params *p, rb_encoding *enc1, rb_encoding *enc2)
{
YYLTYPE loc = RUBY_INIT_YYLLOC();
const char *n1 = rb_enc_name(enc1), *n2 = rb_enc_name(enc2);
compile_error(p, "%s mixed within %s source", n1, n2);
parser_show_error_line(p, &loc);
}
static void
parser_mixed_escape(struct parser_params *p, const char *beg, rb_encoding *enc1, rb_encoding *enc2)
{
const char *pos = p->lex.pcur;
p->lex.pcur = beg;
parser_mixed_error(p, enc1, enc2);
p->lex.pcur = pos;
}
static int
tokadd_string(struct parser_params *p,
int func, int term, int paren, long *nest,
rb_encoding **encp, rb_encoding **enc)
{
int c;
bool erred = false;
#define mixed_error(enc1, enc2) \
(void)(erred || (parser_mixed_error(p, enc1, enc2), erred = true))
#define mixed_escape(beg, enc1, enc2) \
(void)(erred || (parser_mixed_escape(p, beg, enc1, enc2), erred = true))
while ((c = nextc(p)) != -1) {
if (p->heredoc_indent > 0) {
parser_update_heredoc_indent(p, c);
}
if (paren && c == paren) {
++*nest;
}
else if (c == term) {
if (!nest || !*nest) {
pushback(p, c);
break;
}
--*nest;
}
else if ((func & STR_FUNC_EXPAND) && c == '#' && p->lex.pcur < p->lex.pend) {
int c2 = *p->lex.pcur;
if (c2 == '$' || c2 == '@' || c2 == '{') {
pushback(p, c);
break;
}
}
else if (c == '\\') {
literal_flush(p, p->lex.pcur - 1);
c = nextc(p);
switch (c) {
case '\n':
if (func & STR_FUNC_QWORDS) break;
if (func & STR_FUNC_EXPAND) {
if (!(func & STR_FUNC_INDENT) || (p->heredoc_indent < 0))
continue;
if (c == term) {
c = '\\';
goto terminate;
}
}
tokadd(p, '\\');
break;
case '\\':
if (func & STR_FUNC_ESCAPE) tokadd(p, c);
break;
case 'u':
if ((func & STR_FUNC_EXPAND) == 0) {
tokadd(p, '\\');
break;
}
tokadd_utf8(p, enc, term,
func & STR_FUNC_SYMBOL,
func & STR_FUNC_REGEXP);
continue;
default:
if (c == -1) return -1;
if (!ISASCII(c)) {
if ((func & STR_FUNC_EXPAND) == 0) tokadd(p, '\\');
goto non_ascii;
}
if (func & STR_FUNC_REGEXP) {
if (c == term && !simple_re_meta(c)) {
tokadd(p, c);
continue;
}
pushback(p, c);
if ((c = tokadd_escape(p, enc)) < 0)
return -1;
if (*enc && *enc != *encp) {
mixed_escape(p->lex.ptok+2, *enc, *encp);
}
continue;
}
else if (func & STR_FUNC_EXPAND) {
pushback(p, c);
if (func & STR_FUNC_ESCAPE) tokadd(p, '\\');
c = read_escape(p, 0, enc);
}
else if ((func & STR_FUNC_QWORDS) && ISSPACE(c)) {
/* ignore backslashed spaces in %w */
}
else if (c != term && !(paren && c == paren)) {
tokadd(p, '\\');
pushback(p, c);
continue;
}
}
}
else if (!parser_isascii(p)) {
non_ascii:
if (!*enc) {
*enc = *encp;
}
else if (*enc != *encp) {
mixed_error(*enc, *encp);
continue;
}
if (tokadd_mbchar(p, c) == -1) return -1;
continue;
}
else if ((func & STR_FUNC_QWORDS) && ISSPACE(c)) {
pushback(p, c);
break;
}
if (c & 0x80) {
if (!*enc) {
*enc = *encp;
}
else if (*enc != *encp) {
mixed_error(*enc, *encp);
continue;
}
}
tokadd(p, c);
}
terminate:
if (*enc) *encp = *enc;
return c;
}
static inline rb_strterm_t *
new_strterm(VALUE v1, VALUE v2, VALUE v3, VALUE v0)
{
return (rb_strterm_t*)rb_imemo_new(imemo_parser_strterm, v1, v2, v3, v0);
}
/* imemo_parser_strterm for literal */
#define NEW_STRTERM(func, term, paren) \
new_strterm((VALUE)(func), (VALUE)(paren), (VALUE)(term), 0)
#ifdef RIPPER
static void
flush_string_content(struct parser_params *p, rb_encoding *enc)
{
VALUE content = yylval.val;
if (!ripper_is_node_yylval(content))
content = ripper_new_yylval(p, 0, 0, content);
if (has_delayed_token(p)) {
ptrdiff_t len = p->lex.pcur - p->lex.ptok;
if (len > 0) {
rb_enc_str_buf_cat(p->delayed.token, p->lex.ptok, len, enc);
}
dispatch_delayed_token(p, tSTRING_CONTENT);
p->lex.ptok = p->lex.pcur;
RNODE(content)->nd_rval = yylval.val;
}
dispatch_scan_event(p, tSTRING_CONTENT);
if (yylval.val != content)
RNODE(content)->nd_rval = yylval.val;
yylval.val = content;
}
#else
#define flush_string_content(p, enc) ((void)(enc))
#endif
RUBY_FUNC_EXPORTED const unsigned int ruby_global_name_punct_bits[(0x7e - 0x20 + 31) / 32];
/* this can be shared with ripper, since it's independent from struct
* parser_params. */
#ifndef RIPPER
#define BIT(c, idx) (((c) / 32 - 1 == idx) ? (1U << ((c) % 32)) : 0)
#define SPECIAL_PUNCT(idx) ( \
BIT('~', idx) | BIT('*', idx) | BIT('$', idx) | BIT('?', idx) | \
BIT('!', idx) | BIT('@', idx) | BIT('/', idx) | BIT('\\', idx) | \
BIT(';', idx) | BIT(',', idx) | BIT('.', idx) | BIT('=', idx) | \
BIT(':', idx) | BIT('<', idx) | BIT('>', idx) | BIT('\"', idx) | \
BIT('&', idx) | BIT('`', idx) | BIT('\'', idx) | BIT('+', idx) | \
BIT('0', idx))
const unsigned int ruby_global_name_punct_bits[] = {
SPECIAL_PUNCT(0),
SPECIAL_PUNCT(1),
SPECIAL_PUNCT(2),
};
#undef BIT
#undef SPECIAL_PUNCT
#endif
static enum yytokentype
parser_peek_variable_name(struct parser_params *p)
{
int c;
const char *ptr = p->lex.pcur;
if (ptr + 1 >= p->lex.pend) return 0;
c = *ptr++;
switch (c) {
case '$':
if ((c = *ptr) == '-') {
if (++ptr >= p->lex.pend) return 0;
c = *ptr;
}
else if (is_global_name_punct(c) || ISDIGIT(c)) {
return tSTRING_DVAR;
}
break;
case '@':
if ((c = *ptr) == '@') {
if (++ptr >= p->lex.pend) return 0;
c = *ptr;
}
else if (ISDIGIT(c)) {
return tSTRING_DVAR;
}
break;
case '{':
p->lex.pcur = ptr;
p->command_start = TRUE;
return tSTRING_DBEG;
default:
return 0;
}
if (!ISASCII(c) || c == '_' || ISALPHA(c))
return tSTRING_DVAR;
return 0;
}
#define IS_ARG() IS_lex_state(EXPR_ARG_ANY)
#define IS_END() IS_lex_state(EXPR_END_ANY)
#define IS_BEG() (IS_lex_state(EXPR_BEG_ANY) || IS_lex_state_all(EXPR_ARG|EXPR_LABELED))
#define IS_SPCARG(c) (IS_ARG() && space_seen && !ISSPACE(c))
#define IS_LABEL_POSSIBLE() (\
(IS_lex_state(EXPR_LABEL|EXPR_ENDFN) && !cmd_state) || \
IS_ARG())
#define IS_LABEL_SUFFIX(n) (peek_n(p, ':',(n)) && !peek_n(p, ':', (n)+1))
#define IS_AFTER_OPERATOR() IS_lex_state(EXPR_FNAME | EXPR_DOT)
static inline enum yytokentype
parser_string_term(struct parser_params *p, int func)
{
p->lex.strterm = 0;
if (func & STR_FUNC_REGEXP) {
set_yylval_num(regx_options(p));
dispatch_scan_event(p, tREGEXP_END);
SET_LEX_STATE(EXPR_END);
return tREGEXP_END;
}
if ((func & STR_FUNC_LABEL) && IS_LABEL_SUFFIX(0)) {
nextc(p);
SET_LEX_STATE(EXPR_BEG|EXPR_LABEL);
return tLABEL_END;
}
SET_LEX_STATE(EXPR_END);
return tSTRING_END;
}
static enum yytokentype
parse_string(struct parser_params *p, rb_strterm_literal_t *quote)
{
int func = (int)quote->u1.func;
int term = (int)quote->u3.term;
int paren = (int)quote->u2.paren;
int c, space = 0;
rb_encoding *enc = p->enc;
rb_encoding *base_enc = 0;
VALUE lit;
if (func & STR_FUNC_TERM) {
if (func & STR_FUNC_QWORDS) nextc(p); /* delayed term */
SET_LEX_STATE(EXPR_END);
p->lex.strterm = 0;
return func & STR_FUNC_REGEXP ? tREGEXP_END : tSTRING_END;
}
c = nextc(p);
if ((func & STR_FUNC_QWORDS) && ISSPACE(c)) {
do {c = nextc(p);} while (ISSPACE(c));
space = 1;
}
if (func & STR_FUNC_LIST) {
quote->u1.func &= ~STR_FUNC_LIST;
space = 1;
}
if (c == term && !quote->u0.nest) {
if (func & STR_FUNC_QWORDS) {
quote->u1.func |= STR_FUNC_TERM;
pushback(p, c); /* dispatch the term at tSTRING_END */
add_delayed_token(p, p->lex.ptok, p->lex.pcur);
return ' ';
}
return parser_string_term(p, func);
}
if (space) {
pushback(p, c);
add_delayed_token(p, p->lex.ptok, p->lex.pcur);
return ' ';
}
newtok(p);
if ((func & STR_FUNC_EXPAND) && c == '#') {
int t = parser_peek_variable_name(p);
if (t) return t;
tokadd(p, '#');
c = nextc(p);
}
pushback(p, c);
if (tokadd_string(p, func, term, paren, &quote->u0.nest,
&enc, &base_enc) == -1) {
if (p->eofp) {
#ifndef RIPPER
# define unterminated_literal(mesg) yyerror0(mesg)
#else
# define unterminated_literal(mesg) compile_error(p, mesg)
#endif
literal_flush(p, p->lex.pcur);
if (func & STR_FUNC_QWORDS) {
/* no content to add, bailing out here */
unterminated_literal("unterminated list meets end of file");
p->lex.strterm = 0;
return tSTRING_END;
}
if (func & STR_FUNC_REGEXP) {
unterminated_literal("unterminated regexp meets end of file");
}
else {
unterminated_literal("unterminated string meets end of file");
}
quote->u1.func |= STR_FUNC_TERM;
}
}
tokfix(p);
lit = STR_NEW3(tok(p), toklen(p), enc, func);
set_yylval_str(lit);
flush_string_content(p, enc);
return tSTRING_CONTENT;
}
static enum yytokentype
heredoc_identifier(struct parser_params *p)
{
/*
* term_len is length of `<<"END"` except `END`,
* in this case term_len is 4 (<, <, " and ").
*/
long len, offset = p->lex.pcur - p->lex.pbeg;
int c = nextc(p), term, func = 0, quote = 0;
enum yytokentype token = tSTRING_BEG;
int indent = 0;
if (c == '-') {
c = nextc(p);
func = STR_FUNC_INDENT;
offset++;
}
else if (c == '~') {
c = nextc(p);
func = STR_FUNC_INDENT;
offset++;
indent = INT_MAX;
}
switch (c) {
case '\'':
func |= str_squote; goto quoted;
case '"':
func |= str_dquote; goto quoted;
case '`':
token = tXSTRING_BEG;
func |= str_xquote; goto quoted;
quoted:
quote++;
offset++;
term = c;
len = 0;
while ((c = nextc(p)) != term) {
if (c == -1 || c == '\r' || c == '\n') {
yyerror(NULL, p, "unterminated here document identifier");
return -1;
}
}
break;
default:
if (!parser_is_identchar(p)) {
pushback(p, c);
if (func & STR_FUNC_INDENT) {
pushback(p, indent > 0 ? '~' : '-');
}
return 0;
}
func |= str_dquote;
do {
int n = parser_precise_mbclen(p, p->lex.pcur-1);
if (n < 0) return 0;
p->lex.pcur += --n;
} while ((c = nextc(p)) != -1 && parser_is_identchar(p));
pushback(p, c);
break;
}
len = p->lex.pcur - (p->lex.pbeg + offset) - quote;
if ((unsigned long)len >= HERETERM_LENGTH_MAX)
yyerror(NULL, p, "too long here document identifier");
dispatch_scan_event(p, tHEREDOC_BEG);
lex_goto_eol(p);
p->lex.strterm = new_strterm(0, 0, 0, p->lex.lastline);
p->lex.strterm->flags |= STRTERM_HEREDOC;
rb_strterm_heredoc_t *here = &p->lex.strterm->u.heredoc;
here->offset = offset;
here->sourceline = p->ruby_sourceline;
here->length = (int)len;
here->quote = quote;
here->func = func;
token_flush(p);
p->heredoc_indent = indent;
p->heredoc_line_indent = 0;
return token;
}
static void
heredoc_restore(struct parser_params *p, rb_strterm_heredoc_t *here)
{
VALUE line;
p->lex.strterm = 0;
line = here->lastline;
p->lex.lastline = line;
p->lex.pbeg = RSTRING_PTR(line);
p->lex.pend = p->lex.pbeg + RSTRING_LEN(line);
p->lex.pcur = p->lex.pbeg + here->offset + here->length + here->quote;
p->lex.ptok = p->lex.pbeg + here->offset - here->quote;
p->heredoc_end = p->ruby_sourceline;
p->ruby_sourceline = (int)here->sourceline;
if (p->eofp) p->lex.nextline = Qnil;
p->eofp = 0;
}
static int
dedent_string(VALUE string, int width)
{
char *str;
long len;
int i, col = 0;
RSTRING_GETMEM(string, str, len);
for (i = 0; i < len && col < width; i++) {
if (str[i] == ' ') {
col++;
}
else if (str[i] == '\t') {
int n = TAB_WIDTH * (col / TAB_WIDTH + 1);
if (n > width) break;
col = n;
}
else {
break;
}
}
if (!i) return 0;
rb_str_modify(string);
str = RSTRING_PTR(string);
if (RSTRING_LEN(string) != len)
rb_fatal("literal string changed: %+"PRIsVALUE, string);
MEMMOVE(str, str + i, char, len - i);
rb_str_set_len(string, len - i);
return i;
}
#ifndef RIPPER
static NODE *
heredoc_dedent(struct parser_params *p, NODE *root)
{
NODE *node, *str_node, *prev_node;
int indent = p->heredoc_indent;
VALUE prev_lit = 0;
if (indent <= 0) return root;
p->heredoc_indent = 0;
if (!root) return root;
prev_node = node = str_node = root;
if (nd_type(root) == NODE_LIST) str_node = root->nd_head;
while (str_node) {
VALUE lit = str_node->nd_lit;
if (str_node->flags & NODE_FL_NEWLINE) {
dedent_string(lit, indent);
}
if (!prev_lit) {
prev_lit = lit;
}
else if (!literal_concat0(p, prev_lit, lit)) {
return 0;
}
else {
NODE *end = node->nd_end;
node = prev_node->nd_next = node->nd_next;
if (!node) {
if (nd_type(prev_node) == NODE_DSTR)
nd_set_type(prev_node, NODE_STR);
break;
}
node->nd_end = end;
goto next_str;
}
str_node = 0;
while ((node = (prev_node = node)->nd_next) != 0) {
next_str:
if (nd_type(node) != NODE_LIST) break;
if ((str_node = node->nd_head) != 0) {
enum node_type type = nd_type(str_node);
if (type == NODE_STR || type == NODE_DSTR) break;
prev_lit = 0;
str_node = 0;
}
}
}
return root;
}
#else /* RIPPER */
static VALUE
heredoc_dedent(struct parser_params *p, VALUE array)
{
int indent = p->heredoc_indent;
if (indent <= 0) return array;
p->heredoc_indent = 0;
dispatch2(heredoc_dedent, array, INT2NUM(indent));
return array;
}
/*
* call-seq:
* Ripper.dedent_string(input, width) -> Integer
*
* USE OF RIPPER LIBRARY ONLY.
*
* Strips up to +width+ leading whitespaces from +input+,
* and returns the stripped column width.
*/
static VALUE
parser_dedent_string(VALUE self, VALUE input, VALUE width)
{
int wid, col;
StringValue(input);
wid = NUM2UINT(width);
col = dedent_string(input, wid);
return INT2NUM(col);
}
#endif
static int
whole_match_p(struct parser_params *p, const char *eos, long len, int indent)
{
const char *ptr = p->lex.pbeg;
long n;
if (indent) {
while (*ptr && ISSPACE(*ptr)) ptr++;
}
n = p->lex.pend - (ptr + len);
if (n < 0) return FALSE;
if (n > 0 && ptr[len] != '\n') {
if (ptr[len] != '\r') return FALSE;
if (n <= 1 || ptr[len+1] != '\n') return FALSE;
}
return strncmp(eos, ptr, len) == 0;
}
static int
word_match_p(struct parser_params *p, const char *word, long len)
{
if (strncmp(p->lex.pcur, word, len)) return 0;
if (p->lex.pcur + len == p->lex.pend) return 1;
int c = (unsigned char)p->lex.pcur[len];
if (ISSPACE(c)) return 1;
switch (c) {
case '\0': case '\004': case '\032': return 1;
}
return 0;
}
#define NUM_SUFFIX_R (1<<0)
#define NUM_SUFFIX_I (1<<1)
#define NUM_SUFFIX_ALL 3
static int
number_literal_suffix(struct parser_params *p, int mask)
{
int c, result = 0;
const char *lastp = p->lex.pcur;
while ((c = nextc(p)) != -1) {
if ((mask & NUM_SUFFIX_I) && c == 'i') {
result |= (mask & NUM_SUFFIX_I);
mask &= ~NUM_SUFFIX_I;
/* r after i, rational of complex is disallowed */
mask &= ~NUM_SUFFIX_R;
continue;
}
if ((mask & NUM_SUFFIX_R) && c == 'r') {
result |= (mask & NUM_SUFFIX_R);
mask &= ~NUM_SUFFIX_R;
continue;
}
if (!ISASCII(c) || ISALPHA(c) || c == '_') {
p->lex.pcur = lastp;
literal_flush(p, p->lex.pcur);
return 0;
}
pushback(p, c);
break;
}
return result;
}
static enum yytokentype
set_number_literal(struct parser_params *p, VALUE v,
enum yytokentype type, int suffix)
{
if (suffix & NUM_SUFFIX_I) {
v = rb_complex_raw(INT2FIX(0), v);
type = tIMAGINARY;
}
set_yylval_literal(v);
SET_LEX_STATE(EXPR_END);
return type;
}
static enum yytokentype
set_integer_literal(struct parser_params *p, VALUE v, int suffix)
{
enum yytokentype type = tINTEGER;
if (suffix & NUM_SUFFIX_R) {
v = rb_rational_raw1(v);
type = tRATIONAL;
}
return set_number_literal(p, v, type, suffix);
}
#ifdef RIPPER
static void
dispatch_heredoc_end(struct parser_params *p)
{
VALUE str;
if (has_delayed_token(p))
dispatch_delayed_token(p, tSTRING_CONTENT);
str = STR_NEW(p->lex.ptok, p->lex.pend - p->lex.ptok);
ripper_dispatch1(p, ripper_token2eventid(tHEREDOC_END), str);
lex_goto_eol(p);
token_flush(p);
}
#else
#define dispatch_heredoc_end(p) ((void)0)
#endif
static enum yytokentype
here_document(struct parser_params *p, rb_strterm_heredoc_t *here)
{
int c, func, indent = 0;
const char *eos, *ptr, *ptr_end;
long len;
VALUE str = 0;
rb_encoding *enc = p->enc;
rb_encoding *base_enc = 0;
int bol;
eos = RSTRING_PTR(here->lastline) + here->offset;
len = here->length;
indent = (func = here->func) & STR_FUNC_INDENT;
if ((c = nextc(p)) == -1) {
error:
#ifdef RIPPER
if (!has_delayed_token(p)) {
dispatch_scan_event(p, tSTRING_CONTENT);
}
else {
if ((len = p->lex.pcur - p->lex.ptok) > 0) {
if (!(func & STR_FUNC_REGEXP) && rb_enc_asciicompat(enc)) {
int cr = ENC_CODERANGE_UNKNOWN;
rb_str_coderange_scan_restartable(p->lex.ptok, p->lex.pcur, enc, &cr);
if (cr != ENC_CODERANGE_7BIT &&
p->enc == rb_usascii_encoding() &&
enc != rb_utf8_encoding()) {
enc = rb_ascii8bit_encoding();
}
}
rb_enc_str_buf_cat(p->delayed.token, p->lex.ptok, len, enc);
}
dispatch_delayed_token(p, tSTRING_CONTENT);
}
lex_goto_eol(p);
#endif
heredoc_restore(p, &p->lex.strterm->u.heredoc);
compile_error(p, "can't find string \"%.*s\" anywhere before EOF",
(int)len, eos);
token_flush(p);
p->lex.strterm = 0;
SET_LEX_STATE(EXPR_END);
return tSTRING_END;
}
bol = was_bol(p);
if (!bol) {
/* not beginning of line, cannot be the terminator */
}
else if (p->heredoc_line_indent == -1) {
/* `heredoc_line_indent == -1` means
* - "after an interpolation in the same line", or
* - "in a continuing line"
*/
p->heredoc_line_indent = 0;
}
else if (whole_match_p(p, eos, len, indent)) {
dispatch_heredoc_end(p);
restore:
heredoc_restore(p, &p->lex.strterm->u.heredoc);
token_flush(p);
p->lex.strterm = 0;
SET_LEX_STATE(EXPR_END);
return tSTRING_END;
}
if (!(func & STR_FUNC_EXPAND)) {
do {
ptr = RSTRING_PTR(p->lex.lastline);
ptr_end = p->lex.pend;
if (ptr_end > ptr) {
switch (ptr_end[-1]) {
case '\n':
if (--ptr_end == ptr || ptr_end[-1] != '\r') {
ptr_end++;
break;
}
case '\r':
--ptr_end;
}
}
if (p->heredoc_indent > 0) {
long i = 0;
while (ptr + i < ptr_end && parser_update_heredoc_indent(p, ptr[i]))
i++;
p->heredoc_line_indent = 0;
}
if (str)
rb_str_cat(str, ptr, ptr_end - ptr);
else
str = STR_NEW(ptr, ptr_end - ptr);
if (ptr_end < p->lex.pend) rb_str_cat(str, "\n", 1);
lex_goto_eol(p);
if (p->heredoc_indent > 0) {
goto flush_str;
}
if (nextc(p) == -1) {
if (str) {
str = 0;
}
goto error;
}
} while (!whole_match_p(p, eos, len, indent));
}
else {
/* int mb = ENC_CODERANGE_7BIT, *mbp = &mb;*/
newtok(p);
if (c == '#') {
int t = parser_peek_variable_name(p);
if (p->heredoc_line_indent != -1) {
if (p->heredoc_indent > p->heredoc_line_indent) {
p->heredoc_indent = p->heredoc_line_indent;
}
p->heredoc_line_indent = -1;
}
if (t) return t;
tokadd(p, '#');
c = nextc(p);
}
do {
pushback(p, c);
enc = p->enc;
if ((c = tokadd_string(p, func, '\n', 0, NULL, &enc, &base_enc)) == -1) {
if (p->eofp) goto error;
goto restore;
}
if (c != '\n') {
if (c == '\\') p->heredoc_line_indent = -1;
flush:
str = STR_NEW3(tok(p), toklen(p), enc, func);
flush_str:
set_yylval_str(str);
#ifndef RIPPER
if (bol) yylval.node->flags |= NODE_FL_NEWLINE;
#endif
flush_string_content(p, enc);
return tSTRING_CONTENT;
}
tokadd(p, nextc(p));
if (p->heredoc_indent > 0) {
lex_goto_eol(p);
goto flush;
}
/* if (mbp && mb == ENC_CODERANGE_UNKNOWN) mbp = 0;*/
if ((c = nextc(p)) == -1) goto error;
} while (!whole_match_p(p, eos, len, indent));
str = STR_NEW3(tok(p), toklen(p), enc, func);
}
dispatch_heredoc_end(p);
#ifdef RIPPER
str = ripper_new_yylval(p, ripper_token2eventid(tSTRING_CONTENT),
yylval.val, str);
#endif
heredoc_restore(p, &p->lex.strterm->u.heredoc);
token_flush(p);
p->lex.strterm = NEW_STRTERM(func | STR_FUNC_TERM, 0, 0);
set_yylval_str(str);
#ifndef RIPPER
if (bol) yylval.node->flags |= NODE_FL_NEWLINE;
#endif
return tSTRING_CONTENT;
}
#include "lex.c"
static int
arg_ambiguous(struct parser_params *p, char c)
{
#ifndef RIPPER
rb_warning1("ambiguous first argument; put parentheses or a space even after `%c' operator", WARN_I(c));
#else
dispatch1(arg_ambiguous, rb_usascii_str_new(&c, 1));
#endif
return TRUE;
}
static ID
formal_argument(struct parser_params *p, ID lhs)
{
switch (id_type(lhs)) {
case ID_LOCAL:
break;
#ifndef RIPPER
case ID_CONST:
yyerror0("formal argument cannot be a constant");
return 0;
case ID_INSTANCE:
yyerror0("formal argument cannot be an instance variable");
return 0;
case ID_GLOBAL:
yyerror0("formal argument cannot be a global variable");
return 0;
case ID_CLASS:
yyerror0("formal argument cannot be a class variable");
return 0;
default:
yyerror0("formal argument must be local variable");
return 0;
#else
default:
lhs = dispatch1(param_error, lhs);
ripper_error(p);
return 0;
#endif
}
shadowing_lvar(p, lhs);
return lhs;
}
static int
lvar_defined(struct parser_params *p, ID id)
{
return (dyna_in_block(p) && dvar_defined(p, id)) || local_id(p, id);
}
/* emacsen -*- hack */
static long
parser_encode_length(struct parser_params *p, const char *name, long len)
{
long nlen;
if (len > 5 && name[nlen = len - 5] == '-') {
if (rb_memcicmp(name + nlen + 1, "unix", 4) == 0)
return nlen;
}
if (len > 4 && name[nlen = len - 4] == '-') {
if (rb_memcicmp(name + nlen + 1, "dos", 3) == 0)
return nlen;
if (rb_memcicmp(name + nlen + 1, "mac", 3) == 0 &&
!(len == 8 && rb_memcicmp(name, "utf8-mac", len) == 0))
/* exclude UTF8-MAC because the encoding named "UTF8" doesn't exist in Ruby */
return nlen;
}
return len;
}
static void
parser_set_encode(struct parser_params *p, const char *name)
{
int idx = rb_enc_find_index(name);
rb_encoding *enc;
VALUE excargs[3];
if (idx < 0) {
excargs[1] = rb_sprintf("unknown encoding name: %s", name);
error:
excargs[0] = rb_eArgError;
excargs[2] = rb_make_backtrace();
rb_ary_unshift(excargs[2], rb_sprintf("%"PRIsVALUE":%d", p->ruby_sourcefile_string, p->ruby_sourceline));
rb_exc_raise(rb_make_exception(3, excargs));
}
enc = rb_enc_from_index(idx);
if (!rb_enc_asciicompat(enc)) {
excargs[1] = rb_sprintf("%s is not ASCII compatible", rb_enc_name(enc));
goto error;
}
p->enc = enc;
#ifndef RIPPER
if (p->debug_lines) {
VALUE lines = p->debug_lines;
long i, n = RARRAY_LEN(lines);
for (i = 0; i < n; ++i) {
rb_enc_associate_index(RARRAY_AREF(lines, i), idx);
}
}
#endif
}
static int
comment_at_top(struct parser_params *p)
{
const char *ptr = p->lex.pbeg, *ptr_end = p->lex.pcur - 1;
if (p->line_count != (p->has_shebang ? 2 : 1)) return 0;
while (ptr < ptr_end) {
if (!ISSPACE(*ptr)) return 0;
ptr++;
}
return 1;
}
typedef long (*rb_magic_comment_length_t)(struct parser_params *p, const char *name, long len);
typedef void (*rb_magic_comment_setter_t)(struct parser_params *p, const char *name, const char *val);
static void
magic_comment_encoding(struct parser_params *p, const char *name, const char *val)
{
if (!comment_at_top(p)) {
return;
}
parser_set_encode(p, val);
}
static int
parser_get_bool(struct parser_params *p, const char *name, const char *val)
{
switch (*val) {
case 't': case 'T':
if (strcasecmp(val, "true") == 0) {
return TRUE;
}
break;
case 'f': case 'F':
if (strcasecmp(val, "false") == 0) {
return FALSE;
}
break;
}
rb_compile_warning(p->ruby_sourcefile, p->ruby_sourceline, "invalid value for %s: %s", name, val);
return -1;
}
static void
parser_set_token_info(struct parser_params *p, const char *name, const char *val)
{
int b = parser_get_bool(p, name, val);
if (b >= 0) p->token_info_enabled = b;
}
static void
parser_set_compile_option_flag(struct parser_params *p, const char *name, const char *val)
{
int b;
if (p->token_seen) {
rb_warning1("`%s' is ignored after any tokens", WARN_S(name));
return;
}
b = parser_get_bool(p, name, val);
if (b < 0) return;
if (!p->compile_option)
p->compile_option = rb_obj_hide(rb_ident_hash_new());
rb_hash_aset(p->compile_option, ID2SYM(rb_intern(name)),
(b ? Qtrue : Qfalse));
}
# if WARN_PAST_SCOPE
static void
parser_set_past_scope(struct parser_params *p, const char *name, const char *val)
{
int b = parser_get_bool(p, name, val);
if (b >= 0) p->past_scope_enabled = b;
}
# endif
struct magic_comment {
const char *name;
rb_magic_comment_setter_t func;
rb_magic_comment_length_t length;
};
static const struct magic_comment magic_comments[] = {
{"coding", magic_comment_encoding, parser_encode_length},
{"encoding", magic_comment_encoding, parser_encode_length},
{"frozen_string_literal", parser_set_compile_option_flag},
{"warn_indent", parser_set_token_info},
# if WARN_PAST_SCOPE
{"warn_past_scope", parser_set_past_scope},
# endif
};
static const char *
magic_comment_marker(const char *str, long len)
{
long i = 2;
while (i < len) {
switch (str[i]) {
case '-':
if (str[i-1] == '*' && str[i-2] == '-') {
return str + i + 1;
}
i += 2;
break;
case '*':
if (i + 1 >= len) return 0;
if (str[i+1] != '-') {
i += 4;
}
else if (str[i-1] != '-') {
i += 2;
}
else {
return str + i + 2;
}
break;
default:
i += 3;
break;
}
}
return 0;
}
static int
parser_magic_comment(struct parser_params *p, const char *str, long len)
{
int indicator = 0;
VALUE name = 0, val = 0;
const char *beg, *end, *vbeg, *vend;
#define str_copy(_s, _p, _n) ((_s) \
? (void)(rb_str_resize((_s), (_n)), \
MEMCPY(RSTRING_PTR(_s), (_p), char, (_n)), (_s)) \
: (void)((_s) = STR_NEW((_p), (_n))))
if (len <= 7) return FALSE;
if (!!(beg = magic_comment_marker(str, len))) {
if (!(end = magic_comment_marker(beg, str + len - beg)))
return FALSE;
indicator = TRUE;
str = beg;
len = end - beg - 3;
}
/* %r"([^\\s\'\":;]+)\\s*:\\s*(\"(?:\\\\.|[^\"])*\"|[^\"\\s;]+)[\\s;]*" */
while (len > 0) {
const struct magic_comment *mc = magic_comments;
char *s;
int i;
long n = 0;
for (; len > 0 && *str; str++, --len) {
switch (*str) {
case '\'': case '"': case ':': case ';':
continue;
}
if (!ISSPACE(*str)) break;
}
for (beg = str; len > 0; str++, --len) {
switch (*str) {
case '\'': case '"': case ':': case ';':
break;
default:
if (ISSPACE(*str)) break;
continue;
}
break;
}
for (end = str; len > 0 && ISSPACE(*str); str++, --len);
if (!len) break;
if (*str != ':') {
if (!indicator) return FALSE;
continue;
}
do str++; while (--len > 0 && ISSPACE(*str));
if (!len) break;
if (*str == '"') {
for (vbeg = ++str; --len > 0 && *str != '"'; str++) {
if (*str == '\\') {
--len;
++str;
}
}
vend = str;
if (len) {
--len;
++str;
}
}
else {
for (vbeg = str; len > 0 && *str != '"' && *str != ';' && !ISSPACE(*str); --len, str++);
vend = str;
}
if (indicator) {
while (len > 0 && (*str == ';' || ISSPACE(*str))) --len, str++;
}
else {
while (len > 0 && (ISSPACE(*str))) --len, str++;
if (len) return FALSE;
}
n = end - beg;
str_copy(name, beg, n);
s = RSTRING_PTR(name);
for (i = 0; i < n; ++i) {
if (s[i] == '-') s[i] = '_';
}
do {
if (STRNCASECMP(mc->name, s, n) == 0 && !mc->name[n]) {
n = vend - vbeg;
if (mc->length) {
n = (*mc->length)(p, vbeg, n);
}
str_copy(val, vbeg, n);
(*mc->func)(p, mc->name, RSTRING_PTR(val));
break;
}
} while (++mc < magic_comments + numberof(magic_comments));
#ifdef RIPPER
str_copy(val, vbeg, vend - vbeg);
dispatch2(magic_comment, name, val);
#endif
}
return TRUE;
}
static void
set_file_encoding(struct parser_params *p, const char *str, const char *send)
{
int sep = 0;
const char *beg = str;
VALUE s;
for (;;) {
if (send - str <= 6) return;
switch (str[6]) {
case 'C': case 'c': str += 6; continue;
case 'O': case 'o': str += 5; continue;
case 'D': case 'd': str += 4; continue;
case 'I': case 'i': str += 3; continue;
case 'N': case 'n': str += 2; continue;
case 'G': case 'g': str += 1; continue;
case '=': case ':':
sep = 1;
str += 6;
break;
default:
str += 6;
if (ISSPACE(*str)) break;
continue;
}
if (STRNCASECMP(str-6, "coding", 6) == 0) break;
}
for (;;) {
do {
if (++str >= send) return;
} while (ISSPACE(*str));
if (sep) break;
if (*str != '=' && *str != ':') return;
sep = 1;
str++;
}
beg = str;
while ((*str == '-' || *str == '_' || ISALNUM(*str)) && ++str < send);
s = rb_str_new(beg, parser_encode_length(p, beg, str - beg));
parser_set_encode(p, RSTRING_PTR(s));
rb_str_resize(s, 0);
}
static void
parser_prepare(struct parser_params *p)
{
int c = nextc(p);
p->token_info_enabled = !compile_for_eval && RTEST(ruby_verbose);
switch (c) {
case '#':
if (peek(p, '!')) p->has_shebang = 1;
break;
case 0xef: /* UTF-8 BOM marker */
if (p->lex.pend - p->lex.pcur >= 2 &&
(unsigned char)p->lex.pcur[0] == 0xbb &&
(unsigned char)p->lex.pcur[1] == 0xbf) {
p->enc = rb_utf8_encoding();
p->lex.pcur += 2;
p->lex.pbeg = p->lex.pcur;
return;
}
break;
case EOF:
return;
}
pushback(p, c);
p->enc = rb_enc_get(p->lex.lastline);
}
#ifndef RIPPER
#define ambiguous_operator(tok, op, syn) ( \
rb_warning0("`"op"' after local variable or literal is interpreted as binary operator"), \
rb_warning0("even though it seems like "syn""))
#else
#define ambiguous_operator(tok, op, syn) \
dispatch2(operator_ambiguous, TOKEN2VAL(tok), rb_str_new_cstr(syn))
#endif
#define warn_balanced(tok, op, syn) ((void) \
(!IS_lex_state_for(last_state, EXPR_CLASS|EXPR_DOT|EXPR_FNAME|EXPR_ENDFN) && \
space_seen && !ISSPACE(c) && \
(ambiguous_operator(tok, op, syn), 0)), \
(enum yytokentype)(tok))
static VALUE
parse_rational(struct parser_params *p, char *str, int len, int seen_point)
{
VALUE v;
char *point = &str[seen_point];
size_t fraclen = len-seen_point-1;
memmove(point, point+1, fraclen+1);
v = rb_cstr_to_inum(str, 10, FALSE);
return rb_rational_new(v, rb_int_positive_pow(10, fraclen));
}
static enum yytokentype
no_digits(struct parser_params *p)
{
yyerror0("numeric literal without digits");
if (peek(p, '_')) nextc(p);
/* dummy 0, for tUMINUS_NUM at numeric */
return set_integer_literal(p, INT2FIX(0), 0);
}
static enum yytokentype
parse_numeric(struct parser_params *p, int c)
{
int is_float, seen_point, seen_e, nondigit;
int suffix;
is_float = seen_point = seen_e = nondigit = 0;
SET_LEX_STATE(EXPR_END);
newtok(p);
if (c == '-' || c == '+') {
tokadd(p, c);
c = nextc(p);
}
if (c == '0') {
int start = toklen(p);
c = nextc(p);
if (c == 'x' || c == 'X') {
/* hexadecimal */
c = nextc(p);
if (c != -1 && ISXDIGIT(c)) {
do {
if (c == '_') {
if (nondigit) break;
nondigit = c;
continue;
}
if (!ISXDIGIT(c)) break;
nondigit = 0;
tokadd(p, c);
} while ((c = nextc(p)) != -1);
}
pushback(p, c);
tokfix(p);
if (toklen(p) == start) {
return no_digits(p);
}
else if (nondigit) goto trailing_uc;
suffix = number_literal_suffix(p, NUM_SUFFIX_ALL);
return set_integer_literal(p, rb_cstr_to_inum(tok(p), 16, FALSE), suffix);
}
if (c == 'b' || c == 'B') {
/* binary */
c = nextc(p);
if (c == '0' || c == '1') {
do {
if (c == '_') {
if (nondigit) break;
nondigit = c;
continue;
}
if (c != '0' && c != '1') break;
nondigit = 0;
tokadd(p, c);
} while ((c = nextc(p)) != -1);
}
pushback(p, c);
tokfix(p);
if (toklen(p) == start) {
return no_digits(p);
}
else if (nondigit) goto trailing_uc;
suffix = number_literal_suffix(p, NUM_SUFFIX_ALL);
return set_integer_literal(p, rb_cstr_to_inum(tok(p), 2, FALSE), suffix);
}
if (c == 'd' || c == 'D') {
/* decimal */
c = nextc(p);
if (c != -1 && ISDIGIT(c)) {
do {
if (c == '_') {
if (nondigit) break;
nondigit = c;
continue;
}
if (!ISDIGIT(c)) break;
nondigit = 0;
tokadd(p, c);
} while ((c = nextc(p)) != -1);
}
pushback(p, c);
tokfix(p);
if (toklen(p) == start) {
return no_digits(p);
}
else if (nondigit) goto trailing_uc;
suffix = number_literal_suffix(p, NUM_SUFFIX_ALL);
return set_integer_literal(p, rb_cstr_to_inum(tok(p), 10, FALSE), suffix);
}
if (c == '_') {
/* 0_0 */
goto octal_number;
}
if (c == 'o' || c == 'O') {
/* prefixed octal */
c = nextc(p);
if (c == -1 || c == '_' || !ISDIGIT(c)) {
return no_digits(p);
}
}
if (c >= '0' && c <= '7') {
/* octal */
octal_number:
do {
if (c == '_') {
if (nondigit) break;
nondigit = c;
continue;
}
if (c < '0' || c > '9') break;
if (c > '7') goto invalid_octal;
nondigit = 0;
tokadd(p, c);
} while ((c = nextc(p)) != -1);
if (toklen(p) > start) {
pushback(p, c);
tokfix(p);
if (nondigit) goto trailing_uc;
suffix = number_literal_suffix(p, NUM_SUFFIX_ALL);
return set_integer_literal(p, rb_cstr_to_inum(tok(p), 8, FALSE), suffix);
}
if (nondigit) {
pushback(p, c);
goto trailing_uc;
}
}
if (c > '7' && c <= '9') {
invalid_octal:
yyerror0("Invalid octal digit");
}
else if (c == '.' || c == 'e' || c == 'E') {
tokadd(p, '0');
}
else {
pushback(p, c);
suffix = number_literal_suffix(p, NUM_SUFFIX_ALL);
return set_integer_literal(p, INT2FIX(0), suffix);
}
}
for (;;) {
switch (c) {
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
nondigit = 0;
tokadd(p, c);
break;
case '.':
if (nondigit) goto trailing_uc;
if (seen_point || seen_e) {
goto decode_num;
}
else {
int c0 = nextc(p);
if (c0 == -1 || !ISDIGIT(c0)) {
pushback(p, c0);
goto decode_num;
}
c = c0;
}
seen_point = toklen(p);
tokadd(p, '.');
tokadd(p, c);
is_float++;
nondigit = 0;
break;
case 'e':
case 'E':
if (nondigit) {
pushback(p, c);
c = nondigit;
goto decode_num;
}
if (seen_e) {
goto decode_num;
}
nondigit = c;
c = nextc(p);
if (c != '-' && c != '+' && !ISDIGIT(c)) {
pushback(p, c);
nondigit = 0;
goto decode_num;
}
tokadd(p, nondigit);
seen_e++;
is_float++;
tokadd(p, c);
nondigit = (c == '-' || c == '+') ? c : 0;
break;
case '_': /* `_' in number just ignored */
if (nondigit) goto decode_num;
nondigit = c;
break;
default:
goto decode_num;
}
c = nextc(p);
}
decode_num:
pushback(p, c);
if (nondigit) {
trailing_uc:
literal_flush(p, p->lex.pcur - 1);
YYLTYPE loc = RUBY_INIT_YYLLOC();
compile_error(p, "trailing `%c' in number", nondigit);
parser_show_error_line(p, &loc);
}
tokfix(p);
if (is_float) {
enum yytokentype type = tFLOAT;
VALUE v;
suffix = number_literal_suffix(p, seen_e ? NUM_SUFFIX_I : NUM_SUFFIX_ALL);
if (suffix & NUM_SUFFIX_R) {
type = tRATIONAL;
v = parse_rational(p, tok(p), toklen(p), seen_point);
}
else {
double d = strtod(tok(p), 0);
if (errno == ERANGE) {
rb_warning1("Float %s out of range", WARN_S(tok(p)));
errno = 0;
}
v = DBL2NUM(d);
}
return set_number_literal(p, v, type, suffix);
}
suffix = number_literal_suffix(p, NUM_SUFFIX_ALL);
return set_integer_literal(p, rb_cstr_to_inum(tok(p), 10, FALSE), suffix);
}
static enum yytokentype
parse_qmark(struct parser_params *p, int space_seen)
{
rb_encoding *enc;
register int c;
VALUE lit;
if (IS_END()) {
SET_LEX_STATE(EXPR_VALUE);
return '?';
}
c = nextc(p);
if (c == -1) {
compile_error(p, "incomplete character syntax");
return 0;
}
if (rb_enc_isspace(c, p->enc)) {
if (!IS_ARG()) {
int c2 = escaped_control_code(c);
if (c2) {
WARN_SPACE_CHAR(c2, "?");
}
}
ternary:
pushback(p, c);
SET_LEX_STATE(EXPR_VALUE);
return '?';
}
newtok(p);
enc = p->enc;
if (!parser_isascii(p)) {
if (tokadd_mbchar(p, c) == -1) return 0;
}
else if ((rb_enc_isalnum(c, p->enc) || c == '_') &&
p->lex.pcur < p->lex.pend && is_identchar(p->lex.pcur, p->lex.pend, p->enc)) {
if (space_seen) {
const char *start = p->lex.pcur - 1, *ptr = start;
do {
int n = parser_precise_mbclen(p, ptr);
if (n < 0) return -1;
ptr += n;
} while (ptr < p->lex.pend && is_identchar(ptr, p->lex.pend, p->enc));
rb_warn2("`?' just followed by `%.*s' is interpreted as" \
" a conditional operator, put a space after `?'",
WARN_I((int)(ptr - start)), WARN_S_L(start, (ptr - start)));
}
goto ternary;
}
else if (c == '\\') {
if (peek(p, 'u')) {
nextc(p);
enc = rb_utf8_encoding();
tokadd_utf8(p, &enc, -1, 0, 0);
}
else if (!lex_eol_p(p) && !(c = *p->lex.pcur, ISASCII(c))) {
nextc(p);
if (tokadd_mbchar(p, c) == -1) return 0;
}
else {
c = read_escape(p, 0, &enc);
tokadd(p, c);
}
}
else {
tokadd(p, c);
}
tokfix(p);
lit = STR_NEW3(tok(p), toklen(p), enc, 0);
set_yylval_str(lit);
SET_LEX_STATE(EXPR_END);
return tCHAR;
}
static enum yytokentype
parse_percent(struct parser_params *p, const int space_seen, const enum lex_state_e last_state)
{
register int c;
if (IS_BEG()) {
int term;
int paren;
c = nextc(p);
quotation:
if (c == -1 || !ISALNUM(c)) {
term = c;
c = 'Q';
}
else {
term = nextc(p);
if (rb_enc_isalnum(term, p->enc) || !parser_isascii(p)) {
yyerror0("unknown type of %string");
return 0;
}
}
if (c == -1 || term == -1) {
compile_error(p, "unterminated quoted string meets end of file");
return 0;
}
paren = term;
if (term == '(') term = ')';
else if (term == '[') term = ']';
else if (term == '{') term = '}';
else if (term == '<') term = '>';
else paren = 0;
switch (c) {
case 'Q':
p->lex.strterm = NEW_STRTERM(str_dquote, term, paren);
return tSTRING_BEG;
case 'q':
p->lex.strterm = NEW_STRTERM(str_squote, term, paren);
return tSTRING_BEG;
case 'W':
p->lex.strterm = NEW_STRTERM(str_dword, term, paren);
return tWORDS_BEG;
case 'w':
p->lex.strterm = NEW_STRTERM(str_sword, term, paren);
return tQWORDS_BEG;
case 'I':
p->lex.strterm = NEW_STRTERM(str_dword, term, paren);
return tSYMBOLS_BEG;
case 'i':
p->lex.strterm = NEW_STRTERM(str_sword, term, paren);
return tQSYMBOLS_BEG;
case 'x':
p->lex.strterm = NEW_STRTERM(str_xquote, term, paren);
return tXSTRING_BEG;
case 'r':
p->lex.strterm = NEW_STRTERM(str_regexp, term, paren);
return tREGEXP_BEG;
case 's':
p->lex.strterm = NEW_STRTERM(str_ssym, term, paren);
SET_LEX_STATE(EXPR_FNAME|EXPR_FITEM);
return tSYMBEG;
default:
yyerror0("unknown type of %string");
return 0;
}
}
if ((c = nextc(p)) == '=') {
set_yylval_id('%');
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
if (IS_SPCARG(c) || (IS_lex_state(EXPR_FITEM) && c == 's')) {
goto quotation;
}
SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG);
pushback(p, c);
return warn_balanced('%', "%%", "string literal");
}
static int
tokadd_ident(struct parser_params *p, int c)
{
do {
if (tokadd_mbchar(p, c) == -1) return -1;
c = nextc(p);
} while (parser_is_identchar(p));
pushback(p, c);
return 0;
}
static ID
tokenize_ident(struct parser_params *p, const enum lex_state_e last_state)
{
ID ident = TOK_INTERN();
set_yylval_name(ident);
return ident;
}
static int
parse_numvar(struct parser_params *p)
{
size_t len;
int overflow;
unsigned long n = ruby_scan_digits(tok(p)+1, toklen(p)-1, 10, &len, &overflow);
const unsigned long nth_ref_max =
((FIXNUM_MAX < INT_MAX) ? FIXNUM_MAX : INT_MAX) >> 1;
/* NTH_REF is left-shifted to be ORed with back-ref flag and
* turned into a Fixnum, in compile.c */
if (overflow || n > nth_ref_max) {
/* compile_error()? */
rb_warn1("`%s' is too big for a number variable, always nil", WARN_S(tok(p)));
return 0; /* $0 is $PROGRAM_NAME, not NTH_REF */
}
else {
return (int)n;
}
}
static enum yytokentype
parse_gvar(struct parser_params *p, const enum lex_state_e last_state)
{
const char *ptr = p->lex.pcur;
register int c;
SET_LEX_STATE(EXPR_END);
p->lex.ptok = ptr - 1; /* from '$' */
newtok(p);
c = nextc(p);
switch (c) {
case '_': /* $_: last read line string */
c = nextc(p);
if (parser_is_identchar(p)) {
tokadd(p, '$');
tokadd(p, '_');
break;
}
pushback(p, c);
c = '_';
/* fall through */
case '~': /* $~: match-data */
case '*': /* $*: argv */
case '$': /* $$: pid */
case '?': /* $?: last status */
case '!': /* $!: error string */
case '@': /* $@: error position */
case '/': /* $/: input record separator */
case '\\': /* $\: output record separator */
case ';': /* $;: field separator */
case ',': /* $,: output field separator */
case '.': /* $.: last read line number */
case '=': /* $=: ignorecase */
case ':': /* $:: load path */
case '<': /* $<: reading filename */
case '>': /* $>: default output handle */
case '\"': /* $": already loaded files */
tokadd(p, '$');
tokadd(p, c);
goto gvar;
case '-':
tokadd(p, '$');
tokadd(p, c);
c = nextc(p);
if (parser_is_identchar(p)) {
if (tokadd_mbchar(p, c) == -1) return 0;
}
else {
pushback(p, c);
pushback(p, '-');
return '$';
}
gvar:
set_yylval_name(TOK_INTERN());
return tGVAR;
case '&': /* $&: last match */
case '`': /* $`: string before last match */
case '\'': /* $': string after last match */
case '+': /* $+: string matches last paren. */
if (IS_lex_state_for(last_state, EXPR_FNAME)) {
tokadd(p, '$');
tokadd(p, c);
goto gvar;
}
set_yylval_node(NEW_BACK_REF(c, &_cur_loc));
return tBACK_REF;
case '1': case '2': case '3':
case '4': case '5': case '6':
case '7': case '8': case '9':
tokadd(p, '$');
do {
tokadd(p, c);
c = nextc(p);
} while (c != -1 && ISDIGIT(c));
pushback(p, c);
if (IS_lex_state_for(last_state, EXPR_FNAME)) goto gvar;
tokfix(p);
set_yylval_node(NEW_NTH_REF(parse_numvar(p), &_cur_loc));
return tNTH_REF;
default:
if (!parser_is_identchar(p)) {
YYLTYPE loc = RUBY_INIT_YYLLOC();
if (c == -1 || ISSPACE(c)) {
compile_error(p, "`$' without identifiers is not allowed as a global variable name");
}
else {
pushback(p, c);
compile_error(p, "`$%c' is not allowed as a global variable name", c);
}
parser_show_error_line(p, &loc);
set_yylval_noname();
return tGVAR;
}
/* fall through */
case '0':
tokadd(p, '$');
}
if (tokadd_ident(p, c)) return 0;
SET_LEX_STATE(EXPR_END);
tokenize_ident(p, last_state);
return tGVAR;
}
#ifndef RIPPER
static bool
parser_numbered_param(struct parser_params *p, int n)
{
if (n < 0) return false;
if (DVARS_TERMINAL_P(p->lvtbl->args) || DVARS_TERMINAL_P(p->lvtbl->args->prev)) {
return false;
}
if (p->max_numparam == ORDINAL_PARAM) {
compile_error(p, "ordinary parameter is defined");
return false;
}
struct vtable *args = p->lvtbl->args;
if (p->max_numparam < n) {
p->max_numparam = n;
}
while (n > args->pos) {
vtable_add(args, NUMPARAM_IDX_TO_ID(args->pos+1));
}
return true;
}
#endif
static enum yytokentype
parse_atmark(struct parser_params *p, const enum lex_state_e last_state)
{
const char *ptr = p->lex.pcur;
enum yytokentype result = tIVAR;
register int c = nextc(p);
YYLTYPE loc;
p->lex.ptok = ptr - 1; /* from '@' */
newtok(p);
tokadd(p, '@');
if (c == '@') {
result = tCVAR;
tokadd(p, '@');
c = nextc(p);
}
SET_LEX_STATE(IS_lex_state_for(last_state, EXPR_FNAME) ? EXPR_ENDFN : EXPR_END);
if (c == -1 || !parser_is_identchar(p)) {
pushback(p, c);
RUBY_SET_YYLLOC(loc);
if (result == tIVAR) {
compile_error(p, "`@' without identifiers is not allowed as an instance variable name");
}
else {
compile_error(p, "`@@' without identifiers is not allowed as a class variable name");
}
parser_show_error_line(p, &loc);
set_yylval_noname();
SET_LEX_STATE(EXPR_END);
return result;
}
else if (ISDIGIT(c)) {
pushback(p, c);
RUBY_SET_YYLLOC(loc);
if (result == tIVAR) {
compile_error(p, "`@%c' is not allowed as an instance variable name", c);
}
else {
compile_error(p, "`@@%c' is not allowed as a class variable name", c);
}
parser_show_error_line(p, &loc);
set_yylval_noname();
SET_LEX_STATE(EXPR_END);
return result;
}
if (tokadd_ident(p, c)) return 0;
tokenize_ident(p, last_state);
return result;
}
static enum yytokentype
parse_ident(struct parser_params *p, int c, int cmd_state)
{
enum yytokentype result;
int mb = ENC_CODERANGE_7BIT;
const enum lex_state_e last_state = p->lex.state;
ID ident;
do {
if (!ISASCII(c)) mb = ENC_CODERANGE_UNKNOWN;
if (tokadd_mbchar(p, c) == -1) return 0;
c = nextc(p);
} while (parser_is_identchar(p));
if ((c == '!' || c == '?') && !peek(p, '=')) {
result = tFID;
tokadd(p, c);
}
else if (c == '=' && IS_lex_state(EXPR_FNAME) &&
(!peek(p, '~') && !peek(p, '>') && (!peek(p, '=') || (peek_n(p, '>', 1))))) {
result = tIDENTIFIER;
tokadd(p, c);
}
else {
result = tCONSTANT; /* assume provisionally */
pushback(p, c);
}
tokfix(p);
if (IS_LABEL_POSSIBLE()) {
if (IS_LABEL_SUFFIX(0)) {
SET_LEX_STATE(EXPR_ARG|EXPR_LABELED);
nextc(p);
set_yylval_name(TOK_INTERN());
return tLABEL;
}
}
if (mb == ENC_CODERANGE_7BIT && !IS_lex_state(EXPR_DOT)) {
const struct kwtable *kw;
/* See if it is a reserved word. */
kw = rb_reserved_word(tok(p), toklen(p));
if (kw) {
enum lex_state_e state = p->lex.state;
SET_LEX_STATE(kw->state);
if (IS_lex_state_for(state, EXPR_FNAME)) {
set_yylval_name(rb_intern2(tok(p), toklen(p)));
return kw->id[0];
}
if (IS_lex_state(EXPR_BEG)) {
p->command_start = TRUE;
}
if (kw->id[0] == keyword_do) {
if (lambda_beginning_p()) {
p->lex.lpar_beg = -1; /* make lambda_beginning_p() == FALSE in the body of "-> do ... end" */
return keyword_do_LAMBDA;
}
if (COND_P()) return keyword_do_cond;
if (CMDARG_P() && !IS_lex_state_for(state, EXPR_CMDARG))
return keyword_do_block;
return keyword_do;
}
if (IS_lex_state_for(state, (EXPR_BEG | EXPR_LABELED)))
return kw->id[0];
else {
if (kw->id[0] != kw->id[1])
SET_LEX_STATE(EXPR_BEG | EXPR_LABEL);
return kw->id[1];
}
}
}
if (IS_lex_state(EXPR_BEG_ANY | EXPR_ARG_ANY | EXPR_DOT)) {
if (cmd_state) {
SET_LEX_STATE(EXPR_CMDARG);
}
else {
SET_LEX_STATE(EXPR_ARG);
}
}
else if (p->lex.state == EXPR_FNAME) {
SET_LEX_STATE(EXPR_ENDFN);
}
else {
SET_LEX_STATE(EXPR_END);
}
ident = tokenize_ident(p, last_state);
if (result == tCONSTANT && is_local_id(ident)) result = tIDENTIFIER;
if (!IS_lex_state_for(last_state, EXPR_DOT|EXPR_FNAME) &&
(result == tIDENTIFIER) && /* not EXPR_FNAME, not attrasgn */
lvar_defined(p, ident)) {
SET_LEX_STATE(EXPR_END|EXPR_LABEL);
}
return result;
}
static enum yytokentype
parser_yylex(struct parser_params *p)
{
register int c;
int space_seen = 0;
int cmd_state;
int label;
enum lex_state_e last_state;
int fallthru = FALSE;
int token_seen = p->token_seen;
if (p->lex.strterm) {
if (p->lex.strterm->flags & STRTERM_HEREDOC) {
return here_document(p, &p->lex.strterm->u.heredoc);
}
else {
token_flush(p);
return parse_string(p, &p->lex.strterm->u.literal);
}
}
cmd_state = p->command_start;
p->command_start = FALSE;
p->token_seen = TRUE;
retry:
last_state = p->lex.state;
#ifndef RIPPER
token_flush(p);
#endif
switch (c = nextc(p)) {
case '\0': /* NUL */
case '\004': /* ^D */
case '\032': /* ^Z */
case -1: /* end of script. */
return 0;
/* white spaces */
case ' ': case '\t': case '\f': case '\r':
case '\13': /* '\v' */
space_seen = 1;
#ifdef RIPPER
while ((c = nextc(p))) {
switch (c) {
case ' ': case '\t': case '\f': case '\r':
case '\13': /* '\v' */
break;
default:
goto outofloop;
}
}
outofloop:
pushback(p, c);
dispatch_scan_event(p, tSP);
#endif
goto retry;
case '#': /* it's a comment */
p->token_seen = token_seen;
/* no magic_comment in shebang line */
if (!parser_magic_comment(p, p->lex.pcur, p->lex.pend - p->lex.pcur)) {
if (comment_at_top(p)) {
set_file_encoding(p, p->lex.pcur, p->lex.pend);
}
}
lex_goto_eol(p);
dispatch_scan_event(p, tCOMMENT);
fallthru = TRUE;
/* fall through */
case '\n':
p->token_seen = token_seen;
c = (IS_lex_state(EXPR_BEG|EXPR_CLASS|EXPR_FNAME|EXPR_DOT) &&
!IS_lex_state(EXPR_LABELED));
if (c || IS_lex_state_all(EXPR_ARG|EXPR_LABELED)) {
if (!fallthru) {
dispatch_scan_event(p, tIGNORED_NL);
}
fallthru = FALSE;
if (!c && p->in_kwarg) {
goto normal_newline;
}
goto retry;
}
while (1) {
switch (c = nextc(p)) {
case ' ': case '\t': case '\f': case '\r':
case '\13': /* '\v' */
space_seen = 1;
break;
case '#':
pushback(p, c);
if (space_seen) dispatch_scan_event(p, tSP);
goto retry;
case '&':
case '.': {
dispatch_delayed_token(p, tIGNORED_NL);
if (peek(p, '.') == (c == '&')) {
pushback(p, c);
dispatch_scan_event(p, tSP);
goto retry;
}
}
default:
p->ruby_sourceline--;
p->lex.nextline = p->lex.lastline;
case -1: /* EOF no decrement*/
#ifndef RIPPER
if (p->lex.prevline && !p->eofp) p->lex.lastline = p->lex.prevline;
p->lex.pbeg = RSTRING_PTR(p->lex.lastline);
p->lex.pend = p->lex.pcur = p->lex.pbeg + RSTRING_LEN(p->lex.lastline);
pushback(p, 1); /* always pushback */
p->lex.ptok = p->lex.pcur;
#else
lex_goto_eol(p);
if (c != -1) {
p->lex.ptok = p->lex.pcur;
}
#endif
goto normal_newline;
}
}
normal_newline:
p->command_start = TRUE;
SET_LEX_STATE(EXPR_BEG);
return '\n';
case '*':
if ((c = nextc(p)) == '*') {
if ((c = nextc(p)) == '=') {
set_yylval_id(idPow);
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
pushback(p, c);
if (IS_SPCARG(c)) {
rb_warning0("`**' interpreted as argument prefix");
c = tDSTAR;
}
else if (IS_BEG()) {
c = tDSTAR;
}
else {
c = warn_balanced((enum ruby_method_ids)tPOW, "**", "argument prefix");
}
}
else {
if (c == '=') {
set_yylval_id('*');
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
pushback(p, c);
if (IS_SPCARG(c)) {
rb_warning0("`*' interpreted as argument prefix");
c = tSTAR;
}
else if (IS_BEG()) {
c = tSTAR;
}
else {
c = warn_balanced('*', "*", "argument prefix");
}
}
SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG);
return c;
case '!':
c = nextc(p);
if (IS_AFTER_OPERATOR()) {
SET_LEX_STATE(EXPR_ARG);
if (c == '@') {
return '!';
}
}
else {
SET_LEX_STATE(EXPR_BEG);
}
if (c == '=') {
return tNEQ;
}
if (c == '~') {
return tNMATCH;
}
pushback(p, c);
return '!';
case '=':
if (was_bol(p)) {
/* skip embedded rd document */
if (word_match_p(p, "begin", 5)) {
int first_p = TRUE;
lex_goto_eol(p);
dispatch_scan_event(p, tEMBDOC_BEG);
for (;;) {
lex_goto_eol(p);
if (!first_p) {
dispatch_scan_event(p, tEMBDOC);
}
first_p = FALSE;
c = nextc(p);
if (c == -1) {
compile_error(p, "embedded document meets end of file");
return 0;
}
if (c == '=' && word_match_p(p, "end", 3)) {
break;
}
pushback(p, c);
}
lex_goto_eol(p);
dispatch_scan_event(p, tEMBDOC_END);
goto retry;
}
}
SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG);
if ((c = nextc(p)) == '=') {
if ((c = nextc(p)) == '=') {
return tEQQ;
}
pushback(p, c);
return tEQ;
}
if (c == '~') {
return tMATCH;
}
else if (c == '>') {
return tASSOC;
}
pushback(p, c);
return '=';
case '<':
c = nextc(p);
if (c == '<' &&
!IS_lex_state(EXPR_DOT | EXPR_CLASS) &&
!IS_END() &&
(!IS_ARG() || IS_lex_state(EXPR_LABELED) || space_seen)) {
int token = heredoc_identifier(p);
if (token) return token < 0 ? 0 : token;
}
if (IS_AFTER_OPERATOR()) {
SET_LEX_STATE(EXPR_ARG);
}
else {
if (IS_lex_state(EXPR_CLASS))
p->command_start = TRUE;
SET_LEX_STATE(EXPR_BEG);
}
if (c == '=') {
if ((c = nextc(p)) == '>') {
return tCMP;
}
pushback(p, c);
return tLEQ;
}
if (c == '<') {
if ((c = nextc(p)) == '=') {
set_yylval_id(idLTLT);
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
pushback(p, c);
return warn_balanced((enum ruby_method_ids)tLSHFT, "<<", "here document");
}
pushback(p, c);
return '<';
case '>':
SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG);
if ((c = nextc(p)) == '=') {
return tGEQ;
}
if (c == '>') {
if ((c = nextc(p)) == '=') {
set_yylval_id(idGTGT);
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
pushback(p, c);
return tRSHFT;
}
pushback(p, c);
return '>';
case '"':
label = (IS_LABEL_POSSIBLE() ? str_label : 0);
p->lex.strterm = NEW_STRTERM(str_dquote | label, '"', 0);
return tSTRING_BEG;
case '`':
if (IS_lex_state(EXPR_FNAME)) {
SET_LEX_STATE(EXPR_ENDFN);
return c;
}
if (IS_lex_state(EXPR_DOT)) {
if (cmd_state)
SET_LEX_STATE(EXPR_CMDARG);
else
SET_LEX_STATE(EXPR_ARG);
return c;
}
p->lex.strterm = NEW_STRTERM(str_xquote, '`', 0);
return tXSTRING_BEG;
case '\'':
label = (IS_LABEL_POSSIBLE() ? str_label : 0);
p->lex.strterm = NEW_STRTERM(str_squote | label, '\'', 0);
return tSTRING_BEG;
case '?':
return parse_qmark(p, space_seen);
case '&':
if ((c = nextc(p)) == '&') {
SET_LEX_STATE(EXPR_BEG);
if ((c = nextc(p)) == '=') {
set_yylval_id(idANDOP);
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
pushback(p, c);
return tANDOP;
}
else if (c == '=') {
set_yylval_id('&');
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
else if (c == '.') {
set_yylval_id(idANDDOT);
SET_LEX_STATE(EXPR_DOT);
return tANDDOT;
}
pushback(p, c);
if (IS_SPCARG(c)) {
if ((c != ':') ||
(c = peekc_n(p, 1)) == -1 ||
!(c == '\'' || c == '"' ||
is_identchar((p->lex.pcur+1), p->lex.pend, p->enc))) {
rb_warning0("`&' interpreted as argument prefix");
}
c = tAMPER;
}
else if (IS_BEG()) {
c = tAMPER;
}
else {
c = warn_balanced('&', "&", "argument prefix");
}
SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG);
return c;
case '|':
if ((c = nextc(p)) == '|') {
SET_LEX_STATE(EXPR_BEG);
if ((c = nextc(p)) == '=') {
set_yylval_id(idOROP);
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
pushback(p, c);
if (IS_lex_state_for(last_state, EXPR_BEG)) {
c = '|';
pushback(p, '|');
return c;
}
return tOROP;
}
if (c == '=') {
set_yylval_id('|');
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG|EXPR_LABEL);
pushback(p, c);
return '|';
case '+':
c = nextc(p);
if (IS_AFTER_OPERATOR()) {
SET_LEX_STATE(EXPR_ARG);
if (c == '@') {
return tUPLUS;
}
pushback(p, c);
return '+';
}
if (c == '=') {
set_yylval_id('+');
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
if (IS_BEG() || (IS_SPCARG(c) && arg_ambiguous(p, '+'))) {
SET_LEX_STATE(EXPR_BEG);
pushback(p, c);
if (c != -1 && ISDIGIT(c)) {
return parse_numeric(p, '+');
}
return tUPLUS;
}
SET_LEX_STATE(EXPR_BEG);
pushback(p, c);
return warn_balanced('+', "+", "unary operator");
case '-':
c = nextc(p);
if (IS_AFTER_OPERATOR()) {
SET_LEX_STATE(EXPR_ARG);
if (c == '@') {
return tUMINUS;
}
pushback(p, c);
return '-';
}
if (c == '=') {
set_yylval_id('-');
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
if (c == '>') {
SET_LEX_STATE(EXPR_ENDFN);
return tLAMBDA;
}
if (IS_BEG() || (IS_SPCARG(c) && arg_ambiguous(p, '-'))) {
SET_LEX_STATE(EXPR_BEG);
pushback(p, c);
if (c != -1 && ISDIGIT(c)) {
return tUMINUS_NUM;
}
return tUMINUS;
}
SET_LEX_STATE(EXPR_BEG);
pushback(p, c);
return warn_balanced('-', "-", "unary operator");
case '.': {
int is_beg = IS_BEG();
SET_LEX_STATE(EXPR_BEG);
switch (c = nextc(p)) {
case '.':
if ((c = nextc(p)) == '.') {
if (p->lex.paren_nest == 0 && looking_at_eol_p(p)) {
rb_warn0("... at EOL, should be parenthesized?");
}
return is_beg ? tBDOT3 : tDOT3;
}
pushback(p, c);
return is_beg ? tBDOT2 : tDOT2;
case ':':
switch (c = nextc(p)) {
default:
if (!parser_is_identchar(p)) break;
/* fallthru */
case '!': case '%': case '&': case '*': case '+':
case '-': case '/': case '<': case '=': case '>':
case '[': case '^': case '`': case '|': case '~':
pushback(p, c);
SET_LEX_STATE(EXPR_DOT);
return tMETHREF;
case -1:
break;
}
pushback(p, c);
c = ':';
break;
}
pushback(p, c);
if (c != -1 && ISDIGIT(c)) {
char prev = p->lex.pcur-1 > p->lex.pbeg ? *(p->lex.pcur-2) : 0;
parse_numeric(p, '.');
if (ISDIGIT(prev)) {
yyerror0("unexpected fraction part after numeric literal");
}
else {
yyerror0("no .<digit> floating literal anymore; put 0 before dot");
}
SET_LEX_STATE(EXPR_END);
p->lex.ptok = p->lex.pcur;
goto retry;
}
set_yylval_id('.');
SET_LEX_STATE(EXPR_DOT);
return '.';
}
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
return parse_numeric(p, c);
case ')':
COND_POP();
CMDARG_POP();
SET_LEX_STATE(EXPR_ENDFN);
p->lex.paren_nest--;
return c;
case ']':
COND_POP();
CMDARG_POP();
SET_LEX_STATE(EXPR_END);
p->lex.paren_nest--;
return c;
case '}':
/* tSTRING_DEND does COND_POP and CMDARG_POP in the yacc's rule */
if (!p->lex.brace_nest--) return tSTRING_DEND;
COND_POP();
CMDARG_POP();
SET_LEX_STATE(EXPR_END);
p->lex.paren_nest--;
return c;
case ':':
c = nextc(p);
if (c == ':') {
if (IS_BEG() || IS_lex_state(EXPR_CLASS) || IS_SPCARG(-1)) {
SET_LEX_STATE(EXPR_BEG);
return tCOLON3;
}
set_yylval_id(idCOLON2);
SET_LEX_STATE(EXPR_DOT);
return tCOLON2;
}
if (IS_END() || ISSPACE(c) || c == '#') {
pushback(p, c);
c = warn_balanced(':', ":", "symbol literal");
SET_LEX_STATE(EXPR_BEG);
return c;
}
switch (c) {
case '\'':
p->lex.strterm = NEW_STRTERM(str_ssym, c, 0);
break;
case '"':
p->lex.strterm = NEW_STRTERM(str_dsym, c, 0);
break;
default:
pushback(p, c);
break;
}
SET_LEX_STATE(EXPR_FNAME);
return tSYMBEG;
case '/':
if (IS_BEG()) {
p->lex.strterm = NEW_STRTERM(str_regexp, '/', 0);
return tREGEXP_BEG;
}
if ((c = nextc(p)) == '=') {
set_yylval_id('/');
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
pushback(p, c);
if (IS_SPCARG(c)) {
arg_ambiguous(p, '/');
p->lex.strterm = NEW_STRTERM(str_regexp, '/', 0);
return tREGEXP_BEG;
}
SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG);
return warn_balanced('/', "/", "regexp literal");
case '^':
if ((c = nextc(p)) == '=') {
set_yylval_id('^');
SET_LEX_STATE(EXPR_BEG);
return tOP_ASGN;
}
SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG);
pushback(p, c);
return '^';
case ';':
SET_LEX_STATE(EXPR_BEG);
p->command_start = TRUE;
return ';';
case ',':
SET_LEX_STATE(EXPR_BEG|EXPR_LABEL);
return ',';
case '~':
if (IS_AFTER_OPERATOR()) {
if ((c = nextc(p)) != '@') {
pushback(p, c);
}
SET_LEX_STATE(EXPR_ARG);
}
else {
SET_LEX_STATE(EXPR_BEG);
}
return '~';
case '(':
if (IS_BEG()) {
c = tLPAREN;
}
else if (!space_seen) {
/* foo( ... ) => method call, no ambiguity */
}
else if (IS_ARG() || IS_lex_state_all(EXPR_END|EXPR_LABEL)) {
c = tLPAREN_ARG;
}
else if (IS_lex_state(EXPR_ENDFN) && !lambda_beginning_p()) {
rb_warning0("parentheses after method name is interpreted as "
"an argument list, not a decomposed argument");
}
p->lex.paren_nest++;
COND_PUSH(0);
CMDARG_PUSH(0);
SET_LEX_STATE(EXPR_BEG|EXPR_LABEL);
return c;
case '[':
p->lex.paren_nest++;
if (IS_AFTER_OPERATOR()) {
if ((c = nextc(p)) == ']') {
SET_LEX_STATE(EXPR_ARG);
if ((c = nextc(p)) == '=') {
return tASET;
}
pushback(p, c);
return tAREF;
}
pushback(p, c);
SET_LEX_STATE(EXPR_ARG|EXPR_LABEL);
return '[';
}
else if (IS_BEG()) {
c = tLBRACK;
}
else if (IS_ARG() && (space_seen || IS_lex_state(EXPR_LABELED))) {
c = tLBRACK;
}
SET_LEX_STATE(EXPR_BEG|EXPR_LABEL);
COND_PUSH(0);
CMDARG_PUSH(0);
return c;
case '{':
++p->lex.brace_nest;
if (lambda_beginning_p())
c = tLAMBEG;
else if (IS_lex_state(EXPR_LABELED))
c = tLBRACE; /* hash */
else if (IS_lex_state(EXPR_ARG_ANY | EXPR_END | EXPR_ENDFN))
c = '{'; /* block (primary) */
else if (IS_lex_state(EXPR_ENDARG))
c = tLBRACE_ARG; /* block (expr) */
else
c = tLBRACE; /* hash */
if (c != tLBRACE) {
p->command_start = TRUE;
SET_LEX_STATE(EXPR_BEG);
}
else {
SET_LEX_STATE(EXPR_BEG|EXPR_LABEL);
}
++p->lex.paren_nest; /* after lambda_beginning_p() */
COND_PUSH(0);
CMDARG_PUSH(0);
return c;
case '\\':
c = nextc(p);
if (c == '\n') {
space_seen = 1;
dispatch_scan_event(p, tSP);
goto retry; /* skip \\n */
}
if (c == ' ') return tSP;
if (ISSPACE(c)) return c;
pushback(p, c);
return '\\';
case '%':
return parse_percent(p, space_seen, last_state);
case '$':
return parse_gvar(p, last_state);
case '@':
return parse_atmark(p, last_state);
case '_':
if (was_bol(p) && whole_match_p(p, "__END__", 7, 0)) {
p->ruby__end__seen = 1;
p->eofp = 1;
#ifndef RIPPER
return -1;
#else
lex_goto_eol(p);
dispatch_scan_event(p, k__END__);
return 0;
#endif
}
newtok(p);
break;
default:
if (!parser_is_identchar(p)) {
compile_error(p, "Invalid char `\\x%02X' in expression", c);
token_flush(p);
goto retry;
}
newtok(p);
break;
}
return parse_ident(p, c, cmd_state);
}
static enum yytokentype
yylex(YYSTYPE *lval, YYLTYPE *yylloc, struct parser_params *p)
{
enum yytokentype t;
p->lval = lval;
lval->val = Qundef;
t = parser_yylex(p);
if (has_delayed_token(p))
dispatch_delayed_token(p, t);
else if (t != 0)
dispatch_scan_event(p, t);
if (p->lex.strterm && (p->lex.strterm->flags & STRTERM_HEREDOC))
RUBY_SET_YYLLOC_FROM_STRTERM_HEREDOC(*yylloc);
else
RUBY_SET_YYLLOC(*yylloc);
return t;
}
#define LVAR_USED ((ID)1 << (sizeof(ID) * CHAR_BIT - 1))
static NODE*
node_newnode(struct parser_params *p, enum node_type type, VALUE a0, VALUE a1, VALUE a2, const rb_code_location_t *loc)
{
NODE *n = rb_ast_newnode(p->ast, type);
rb_node_init(n, type, a0, a1, a2);
nd_set_loc(n, loc);
nd_set_node_id(n, parser_get_node_id(p));
return n;
}
static NODE *
nd_set_loc(NODE *nd, const YYLTYPE *loc)
{
nd->nd_loc = *loc;
nd_set_line(nd, loc->beg_pos.lineno);
return nd;
}
#ifndef RIPPER
static enum node_type
nodetype(NODE *node) /* for debug */
{
return (enum node_type)nd_type(node);
}
static int
nodeline(NODE *node)
{
return nd_line(node);
}
static NODE*
newline_node(NODE *node)
{
if (node) {
node = remove_begin(node);
node->flags |= NODE_FL_NEWLINE;
}
return node;
}
static void
fixpos(NODE *node, NODE *orig)
{
if (!node) return;
if (!orig) return;
nd_set_line(node, nd_line(orig));
}
static void
parser_warning(struct parser_params *p, NODE *node, const char *mesg)
{
rb_compile_warning(p->ruby_sourcefile, nd_line(node), "%s", mesg);
}
static void
parser_warn(struct parser_params *p, NODE *node, const char *mesg)
{
rb_compile_warn(p->ruby_sourcefile, nd_line(node), "%s", mesg);
}
static NODE*
block_append(struct parser_params *p, NODE *head, NODE *tail)
{
NODE *end, *h = head, *nd;
if (tail == 0) return head;
if (h == 0) return tail;
switch (nd_type(h)) {
case NODE_LIT:
case NODE_STR:
case NODE_SELF:
case NODE_TRUE:
case NODE_FALSE:
case NODE_NIL:
parser_warning(p, h, "unused literal ignored");
return tail;
default:
h = end = NEW_BLOCK(head, &head->nd_loc);
end->nd_end = end;
head = end;
break;
case NODE_BLOCK:
end = h->nd_end;
break;
}
nd = end->nd_head;
switch (nd_type(nd)) {
case NODE_RETURN:
case NODE_BREAK:
case NODE_NEXT:
case NODE_REDO:
case NODE_RETRY:
if (RTEST(ruby_verbose)) {
parser_warning(p, tail, "statement not reached");
}
break;
default:
break;
}
if (nd_type(tail) != NODE_BLOCK) {
tail = NEW_BLOCK(tail, &tail->nd_loc);
tail->nd_end = tail;
}
end->nd_next = tail;
h->nd_end = tail->nd_end;
nd_set_last_loc(head, nd_last_loc(tail));
return head;
}
/* append item to the list */
static NODE*
list_append(struct parser_params *p, NODE *list, NODE *item)
{
NODE *last;
if (list == 0) return NEW_LIST(item, &item->nd_loc);
if (list->nd_next) {
last = list->nd_next->nd_end;
}
else {
last = list;
}
list->nd_alen += 1;
last->nd_next = NEW_LIST(item, &item->nd_loc);
list->nd_next->nd_end = last->nd_next;
nd_set_last_loc(list, nd_last_loc(item));
return list;
}
/* concat two lists */
static NODE*
list_concat(NODE *head, NODE *tail)
{
NODE *last;
if (head->nd_next) {
last = head->nd_next->nd_end;
}
else {
last = head;
}
head->nd_alen += tail->nd_alen;
last->nd_next = tail;
if (tail->nd_next) {
head->nd_next->nd_end = tail->nd_next->nd_end;
}
else {
head->nd_next->nd_end = tail;
}
nd_set_last_loc(head, nd_last_loc(tail));
return head;
}
static int
literal_concat0(struct parser_params *p, VALUE head, VALUE tail)
{
if (NIL_P(tail)) return 1;
if (!rb_enc_compatible(head, tail)) {
compile_error(p, "string literal encodings differ (%s / %s)",
rb_enc_name(rb_enc_get(head)),
rb_enc_name(rb_enc_get(tail)));
rb_str_resize(head, 0);
rb_str_resize(tail, 0);
return 0;
}
rb_str_buf_append(head, tail);
return 1;
}
/* concat two string literals */
static NODE *
literal_concat(struct parser_params *p, NODE *head, NODE *tail, const YYLTYPE *loc)
{
enum node_type htype;
NODE *headlast;
VALUE lit;
if (!head) return tail;
if (!tail) return head;
htype = nd_type(head);
if (htype == NODE_EVSTR) {
NODE *node = NEW_DSTR(STR_NEW0(), loc);
RB_OBJ_WRITTEN(p->ast, Qnil, node->nd_lit);
head = list_append(p, node, head);
htype = NODE_DSTR;
}
if (p->heredoc_indent > 0) {
switch (htype) {
case NODE_STR:
nd_set_type(head, NODE_DSTR);
case NODE_DSTR:
return list_append(p, head, tail);
default:
break;
}
}
switch (nd_type(tail)) {
case NODE_STR:
if (htype == NODE_DSTR && (headlast = head->nd_next->nd_end->nd_head) &&
nd_type(headlast) == NODE_STR) {
htype = NODE_STR;
lit = headlast->nd_lit;
}
else {
lit = head->nd_lit;
}
if (htype == NODE_STR) {
if (!literal_concat0(p, lit, tail->nd_lit)) {
error:
rb_discard_node(p, head);
rb_discard_node(p, tail);
return 0;
}
rb_discard_node(p, tail);
}
else {
list_append(p, head, tail);
}
break;
case NODE_DSTR:
if (htype == NODE_STR) {
if (!literal_concat0(p, head->nd_lit, tail->nd_lit))
goto error;
tail->nd_lit = head->nd_lit;
rb_discard_node(p, head);
head = tail;
}
else if (NIL_P(tail->nd_lit)) {
append:
head->nd_alen += tail->nd_alen - 1;
head->nd_next->nd_end->nd_next = tail->nd_next;
head->nd_next->nd_end = tail->nd_next->nd_end;
rb_discard_node(p, tail);
}
else if (htype == NODE_DSTR && (headlast = head->nd_next->nd_end->nd_head) &&
nd_type(headlast) == NODE_STR) {
lit = headlast->nd_lit;
if (!literal_concat0(p, lit, tail->nd_lit))
goto error;
tail->nd_lit = Qnil;
goto append;
}
else {
list_concat(head, NEW_NODE(NODE_LIST, NEW_STR(tail->nd_lit, loc), tail->nd_alen, tail->nd_next, loc));
}
break;
case NODE_EVSTR:
if (htype == NODE_STR) {
nd_set_type(head, NODE_DSTR);
head->nd_alen = 1;
}
list_append(p, head, tail);
break;
}
return head;
}
static NODE *
evstr2dstr(struct parser_params *p, NODE *node)
{
if (nd_type(node) == NODE_EVSTR) {
NODE * dstr = NEW_DSTR(STR_NEW0(), &node->nd_loc);
RB_OBJ_WRITTEN(p->ast, Qnil, dstr->nd_lit);
node = list_append(p, dstr, node);
}
return node;
}
static NODE *
new_evstr(struct parser_params *p, NODE *node, const YYLTYPE *loc)
{
NODE *head = node;
if (node) {
switch (nd_type(node)) {
case NODE_STR: case NODE_DSTR: case NODE_EVSTR:
return node;
}
}
return NEW_EVSTR(head, loc);
}
static NODE *
call_bin_op(struct parser_params *p, NODE *recv, ID id, NODE *arg1,
const YYLTYPE *op_loc, const YYLTYPE *loc)
{
NODE *expr;
value_expr(recv);
value_expr(arg1);
expr = NEW_OPCALL(recv, id, NEW_LIST(arg1, &arg1->nd_loc), loc);
nd_set_line(expr, op_loc->beg_pos.lineno);
return expr;
}
static NODE *
call_uni_op(struct parser_params *p, NODE *recv, ID id, const YYLTYPE *op_loc, const YYLTYPE *loc)
{
NODE *opcall;
value_expr(recv);
opcall = NEW_OPCALL(recv, id, 0, loc);
nd_set_line(opcall, op_loc->beg_pos.lineno);
return opcall;
}
static NODE *
new_qcall(struct parser_params* p, ID atype, NODE *recv, ID mid, NODE *args, const YYLTYPE *op_loc, const YYLTYPE *loc)
{
NODE *qcall = NEW_QCALL(atype, recv, mid, args, loc);
nd_set_line(qcall, op_loc->beg_pos.lineno);
return qcall;
}
static NODE*
new_command_qcall(struct parser_params* p, ID atype, NODE *recv, ID mid, NODE *args, NODE *block, const YYLTYPE *op_loc, const YYLTYPE *loc)
{
NODE *ret;
if (block) block_dup_check(p, args, block);
ret = new_qcall(p, atype, recv, mid, args, op_loc, loc);
if (block) ret = method_add_block(p, ret, block, loc);
fixpos(ret, recv);
return ret;
}
#define nd_once_body(node) (nd_type(node) == NODE_ONCE ? (node)->nd_body : node)
static NODE*
match_op(struct parser_params *p, NODE *node1, NODE *node2, const YYLTYPE *op_loc, const YYLTYPE *loc)
{
NODE *n;
int line = op_loc->beg_pos.lineno;
value_expr(node1);
value_expr(node2);
if (node1 && (n = nd_once_body(node1)) != 0) {
switch (nd_type(n)) {
case NODE_DREGX:
{
NODE *match = NEW_MATCH2(node1, node2, loc);
nd_set_line(match, line);
return match;
}
case NODE_LIT:
if (RB_TYPE_P(n->nd_lit, T_REGEXP)) {
const VALUE lit = n->nd_lit;
NODE *match = NEW_MATCH2(node1, node2, loc);
match->nd_args = reg_named_capture_assign(p, lit, loc);
nd_set_line(match, line);
return match;
}
}
}
if (node2 && (n = nd_once_body(node2)) != 0) {
NODE *match3;
switch (nd_type(n)) {
case NODE_LIT:
if (!RB_TYPE_P(n->nd_lit, T_REGEXP)) break;
/* fallthru */
case NODE_DREGX:
match3 = NEW_MATCH3(node2, node1, loc);
return match3;
}
}
n = NEW_CALL(node1, tMATCH, NEW_LIST(node2, &node2->nd_loc), loc);
nd_set_line(n, line);
return n;
}
# if WARN_PAST_SCOPE
static int
past_dvar_p(struct parser_params *p, ID id)
{
struct vtable *past = p->lvtbl->past;
while (past) {
if (vtable_included(past, id)) return 1;
past = past->prev;
}
return 0;
}
# endif
/* As Ripper#warn does not have arguments for the location, so the
* following messages cannot be separated */
#define WARN_LOCATION(type) do { \
if (p->warn_location) { \
int line; \
VALUE file = rb_source_location(&line); \
rb_warn3(type" in eval may not return location in binding;" \
" use Binding#source_location instead\n" \
"%"PRIsWARN":%d: warning: in `%"PRIsWARN"'", \
file, WARN_I(line), rb_id2str(rb_frame_this_func())); \
} \
} while (0)
static int
numparam_nested_p(struct parser_params *p)
{
struct local_vars *local = p->lvtbl;
NODE *outer = local->numparam.outer;
NODE *inner = local->numparam.inner;
if (outer || inner) {
NODE *used = outer ? outer : inner;
compile_error(p, "numbered parameter is already used in\n"
"%s:%d: %s block here",
p->ruby_sourcefile, nd_line(used),
outer ? "outer" : "inner");
parser_show_error_line(p, &used->nd_loc);
return 1;
}
return 0;
}
static NODE*
gettable(struct parser_params *p, ID id, const YYLTYPE *loc)
{
ID *vidp = NULL;
NODE *node;
switch (id) {
case keyword_self:
return NEW_SELF(loc);
case keyword_nil:
return NEW_NIL(loc);
case keyword_true:
return NEW_TRUE(loc);
case keyword_false:
return NEW_FALSE(loc);
case keyword__FILE__:
WARN_LOCATION("__FILE__");
{
VALUE file = p->ruby_sourcefile_string;
if (NIL_P(file))
file = rb_str_new(0, 0);
else
file = rb_str_dup(file);
node = NEW_STR(file, loc);
RB_OBJ_WRITTEN(p->ast, Qnil, file);
}
return node;
case keyword__LINE__:
WARN_LOCATION("__LINE__");
return NEW_LIT(INT2FIX(p->tokline), loc);
case keyword__ENCODING__:
node = NEW_LIT(rb_enc_from_encoding(p->enc), loc);
RB_OBJ_WRITTEN(p->ast, Qnil, node->nd_lit);
return node;
}
switch (id_type(id)) {
case ID_LOCAL:
if (dyna_in_block(p) && dvar_defined_ref(p, id, &vidp)) {
if (NUMPARAM_ID_P(id) && numparam_nested_p(p)) return 0;
if (id == p->cur_arg) {
compile_error(p, "circular argument reference - %"PRIsWARN, rb_id2str(id));
return 0;
}
if (vidp) *vidp |= LVAR_USED;
node = NEW_DVAR(id, loc);
return node;
}
if (local_id_ref(p, id, &vidp)) {
if (id == p->cur_arg) {
compile_error(p, "circular argument reference - %"PRIsWARN, rb_id2str(id));
return 0;
}
if (vidp) *vidp |= LVAR_USED;
node = NEW_LVAR(id, loc);
return node;
}
if (dyna_in_block(p) && NUMPARAM_ID_P(id) &&
parser_numbered_param(p, NUMPARAM_ID_TO_IDX(id))) {
if (numparam_nested_p(p)) return 0;
node = NEW_DVAR(id, loc);
struct local_vars *local = p->lvtbl;
if (!local->numparam.current) local->numparam.current = node;
return node;
}
# if WARN_PAST_SCOPE
if (!p->in_defined && RTEST(ruby_verbose) && past_dvar_p(p, id)) {
rb_warning1("possible reference to past scope - %"PRIsWARN, rb_id2str(id));
}
# endif
/* method call without arguments */
return NEW_VCALL(id, loc);
case ID_GLOBAL:
return NEW_GVAR(id, loc);
case ID_INSTANCE:
return NEW_IVAR(id, loc);
case ID_CONST:
return NEW_CONST(id, loc);
case ID_CLASS:
return NEW_CVAR(id, loc);
}
compile_error(p, "identifier %"PRIsVALUE" is not valid to get", rb_id2str(id));
return 0;
}
static NODE *
opt_arg_append(NODE *opt_list, NODE *opt)
{
NODE *opts = opt_list;
opts->nd_loc.end_pos = opt->nd_loc.end_pos;
while (opts->nd_next) {
opts = opts->nd_next;
opts->nd_loc.end_pos = opt->nd_loc.end_pos;
}
opts->nd_next = opt;
return opt_list;
}
static NODE *
kwd_append(NODE *kwlist, NODE *kw)
{
if (kwlist) {
NODE *kws = kwlist;
kws->nd_loc.end_pos = kw->nd_loc.end_pos;
while (kws->nd_next) {
kws = kws->nd_next;
kws->nd_loc.end_pos = kw->nd_loc.end_pos;
}
kws->nd_next = kw;
}
return kwlist;
}
static NODE *
new_defined(struct parser_params *p, NODE *expr, const YYLTYPE *loc)
{
return NEW_DEFINED(remove_begin_all(expr), loc);
}
static NODE*
symbol_append(struct parser_params *p, NODE *symbols, NODE *symbol)
{
if (nd_type(symbol) == NODE_DSTR) {
nd_set_type(symbol, NODE_DSYM);
}
else {
nd_set_type(symbol, NODE_LIT);
RB_OBJ_WRITTEN(p->ast, Qnil, symbol->nd_lit = rb_str_intern(symbol->nd_lit));
}
return list_append(p, symbols, symbol);
}
static NODE *
new_regexp(struct parser_params *p, NODE *node, int options, const YYLTYPE *loc)
{
NODE *list, *prev;
VALUE lit;
if (!node) {
node = NEW_LIT(reg_compile(p, STR_NEW0(), options), loc);
RB_OBJ_WRITTEN(p->ast, Qnil, node->nd_lit);
return node;
}
switch (nd_type(node)) {
case NODE_STR:
{
VALUE src = node->nd_lit;
nd_set_type(node, NODE_LIT);
nd_set_loc(node, loc);
RB_OBJ_WRITTEN(p->ast, Qnil, node->nd_lit = reg_compile(p, src, options));
}
break;
default:
lit = STR_NEW0();
node = NEW_NODE(NODE_DSTR, lit, 1, NEW_LIST(node, loc), loc);
RB_OBJ_WRITTEN(p->ast, Qnil, lit);
/* fall through */
case NODE_DSTR:
nd_set_type(node, NODE_DREGX);
nd_set_loc(node, loc);
node->nd_cflag = options & RE_OPTION_MASK;
if (!NIL_P(node->nd_lit)) reg_fragment_check(p, node->nd_lit, options);
for (list = (prev = node)->nd_next; list; list = list->nd_next) {
if (nd_type(list->nd_head) == NODE_STR) {
VALUE tail = list->nd_head->nd_lit;
if (reg_fragment_check(p, tail, options) && prev && !NIL_P(prev->nd_lit)) {
VALUE lit = prev == node ? prev->nd_lit : prev->nd_head->nd_lit;
if (!literal_concat0(p, lit, tail)) {
return NEW_NIL(loc); /* dummy node on error */
}
rb_str_resize(tail, 0);
prev->nd_next = list->nd_next;
rb_discard_node(p, list->nd_head);
rb_discard_node(p, list);
list = prev;
}
else {
prev = list;
}
}
else {
prev = 0;
}
}
if (!node->nd_next) {
VALUE src = node->nd_lit;
nd_set_type(node, NODE_LIT);
RB_OBJ_WRITTEN(p->ast, Qnil, node->nd_lit = reg_compile(p, src, options));
}
if (options & RE_OPTION_ONCE) {
node = NEW_NODE(NODE_ONCE, 0, node, 0, loc);
}
break;
}
return node;
}
static NODE *
new_kw_arg(struct parser_params *p, NODE *k, const YYLTYPE *loc)
{
if (!k) return 0;
return NEW_KW_ARG(0, (k), loc);
}
static NODE *
new_xstring(struct parser_params *p, NODE *node, const YYLTYPE *loc)
{
if (!node) {
VALUE lit = STR_NEW0();
NODE *xstr = NEW_XSTR(lit, loc);
RB_OBJ_WRITTEN(p->ast, Qnil, lit);
return xstr;
}
switch (nd_type(node)) {
case NODE_STR:
nd_set_type(node, NODE_XSTR);
nd_set_loc(node, loc);
break;
case NODE_DSTR:
nd_set_type(node, NODE_DXSTR);
nd_set_loc(node, loc);
break;
default:
node = NEW_NODE(NODE_DXSTR, Qnil, 1, NEW_LIST(node, loc), loc);
break;
}
return node;
}
static void
check_literal_when(struct parser_params *p, NODE *arg, const YYLTYPE *loc)
{
VALUE lit;
if (!arg || !p->case_labels) return;
lit = rb_node_case_when_optimizable_literal(arg);
if (lit == Qundef) return;
if (nd_type(arg) == NODE_STR) {
RB_OBJ_WRITTEN(p->ast, Qnil, arg->nd_lit = lit);
}
if (NIL_P(p->case_labels)) {
p->case_labels = rb_obj_hide(rb_hash_new());
}
else {
VALUE line = rb_hash_lookup(p->case_labels, lit);
if (!NIL_P(line)) {
rb_warning1("duplicated `when' clause with line %d is ignored",
WARN_IVAL(line));
return;
}
}
rb_hash_aset(p->case_labels, lit, INT2NUM(p->ruby_sourceline));
}
#else /* !RIPPER */
static int
id_is_var(struct parser_params *p, ID id)
{
if (is_notop_id(id)) {
switch (id & ID_SCOPE_MASK) {
case ID_GLOBAL: case ID_INSTANCE: case ID_CONST: case ID_CLASS:
return 1;
case ID_LOCAL:
if (dyna_in_block(p)) {
if (NUMPARAM_ID_P(id) || dvar_defined(p, id)) return 1;
}
if (local_id(p, id)) return 1;
/* method call without arguments */
return 0;
}
}
compile_error(p, "identifier %"PRIsVALUE" is not valid to get", rb_id2str(id));
return 0;
}
static VALUE
new_regexp(struct parser_params *p, VALUE re, VALUE opt, const YYLTYPE *loc)
{
VALUE src = 0, err;
int options = 0;
if (ripper_is_node_yylval(re)) {
src = RNODE(re)->nd_cval;
re = RNODE(re)->nd_rval;
}
if (ripper_is_node_yylval(opt)) {
options = (int)RNODE(opt)->nd_tag;
opt = RNODE(opt)->nd_rval;
}
if (src && NIL_P(parser_reg_compile(p, src, options, &err))) {
compile_error(p, "%"PRIsVALUE, err);
}
return dispatch2(regexp_literal, re, opt);
}
#endif /* !RIPPER */
#ifndef RIPPER
static const char rb_parser_lex_state_names[][8] = {
"BEG", "END", "ENDARG", "ENDFN", "ARG",
"CMDARG", "MID", "FNAME", "DOT", "CLASS",
"LABEL", "LABELED","FITEM",
};
static VALUE
append_lex_state_name(enum lex_state_e state, VALUE buf)
{
int i, sep = 0;
unsigned int mask = 1;
static const char none[] = "NONE";
for (i = 0; i < EXPR_MAX_STATE; ++i, mask <<= 1) {
if ((unsigned)state & mask) {
if (sep) {
rb_str_cat(buf, "|", 1);
}
sep = 1;
rb_str_cat_cstr(buf, rb_parser_lex_state_names[i]);
}
}
if (!sep) {
rb_str_cat(buf, none, sizeof(none)-1);
}
return buf;
}
static void
flush_debug_buffer(struct parser_params *p, VALUE out, VALUE str)
{
VALUE mesg = p->debug_buffer;
if (!NIL_P(mesg) && RSTRING_LEN(mesg)) {
p->debug_buffer = Qnil;
rb_io_puts(1, &mesg, out);
}
if (!NIL_P(str) && RSTRING_LEN(str)) {
rb_io_write(p->debug_output, str);
}
}
enum lex_state_e
rb_parser_trace_lex_state(struct parser_params *p, enum lex_state_e from,
enum lex_state_e to, int line)
{
VALUE mesg;
mesg = rb_str_new_cstr("lex_state: ");
append_lex_state_name(from, mesg);
rb_str_cat_cstr(mesg, " -> ");
append_lex_state_name(to, mesg);
rb_str_catf(mesg, " at line %d\n", line);
flush_debug_buffer(p, p->debug_output, mesg);
return to;
}
VALUE
rb_parser_lex_state_name(enum lex_state_e state)
{
return rb_fstring(append_lex_state_name(state, rb_str_new(0, 0)));
}
static void
append_bitstack_value(stack_type stack, VALUE mesg)
{
if (stack == 0) {
rb_str_cat_cstr(mesg, "0");
}
else {
stack_type mask = (stack_type)1U << (CHAR_BIT * sizeof(stack_type) - 1);
for (; mask && !(stack & mask); mask >>= 1) continue;
for (; mask; mask >>= 1) rb_str_cat(mesg, stack & mask ? "1" : "0", 1);
}
}
void
rb_parser_show_bitstack(struct parser_params *p, stack_type stack,
const char *name, int line)
{
VALUE mesg = rb_sprintf("%s: ", name);
append_bitstack_value(stack, mesg);
rb_str_catf(mesg, " at line %d\n", line);
flush_debug_buffer(p, p->debug_output, mesg);
}
void
rb_parser_fatal(struct parser_params *p, const char *fmt, ...)
{
va_list ap;
VALUE mesg = rb_str_new_cstr("internal parser error: ");
va_start(ap, fmt);
rb_str_vcatf(mesg, fmt, ap);
va_end(ap);
parser_yyerror(p, NULL, RSTRING_PTR(mesg));
RB_GC_GUARD(mesg);
mesg = rb_str_new(0, 0);
append_lex_state_name(p->lex.state, mesg);
compile_error(p, "lex.state: %"PRIsVALUE, mesg);
rb_str_resize(mesg, 0);
append_bitstack_value(p->cond_stack, mesg);
compile_error(p, "cond_stack: %"PRIsVALUE, mesg);
rb_str_resize(mesg, 0);
append_bitstack_value(p->cmdarg_stack, mesg);
compile_error(p, "cmdarg_stack: %"PRIsVALUE, mesg);
if (p->debug_output == rb_stdout)
p->debug_output = rb_stderr;
p->debug = TRUE;
}
YYLTYPE *
rb_parser_set_location_from_strterm_heredoc(struct parser_params *p, rb_strterm_heredoc_t *here, YYLTYPE *yylloc)
{
int sourceline = here->sourceline;
int beg_pos = (int)here->offset - here->quote
- (rb_strlen_lit("<<-") - !(here->func & STR_FUNC_INDENT));
int end_pos = (int)here->offset + here->length + here->quote;
yylloc->beg_pos.lineno = sourceline;
yylloc->beg_pos.column = beg_pos;
yylloc->end_pos.lineno = sourceline;
yylloc->end_pos.column = end_pos;
return yylloc;
}
YYLTYPE *
rb_parser_set_location_of_none(struct parser_params *p, YYLTYPE *yylloc)
{
yylloc->beg_pos.lineno = p->ruby_sourceline;
yylloc->beg_pos.column = (int)(p->lex.ptok - p->lex.pbeg);
yylloc->end_pos.lineno = p->ruby_sourceline;
yylloc->end_pos.column = (int)(p->lex.ptok - p->lex.pbeg);
return yylloc;
}
YYLTYPE *
rb_parser_set_location(struct parser_params *p, YYLTYPE *yylloc)
{
yylloc->beg_pos.lineno = p->ruby_sourceline;
yylloc->beg_pos.column = (int)(p->lex.ptok - p->lex.pbeg);
yylloc->end_pos.lineno = p->ruby_sourceline;
yylloc->end_pos.column = (int)(p->lex.pcur - p->lex.pbeg);
return yylloc;
}
#endif /* !RIPPER */
static void
parser_token_value_print(struct parser_params *p, enum yytokentype type, const YYSTYPE *valp)
{
VALUE v;
switch (type) {
case tIDENTIFIER: case tFID: case tGVAR: case tIVAR:
case tCONSTANT: case tCVAR: case tLABEL: case tOP_ASGN:
#ifndef RIPPER
v = rb_id2str(valp->id);
#else
v = valp->node->nd_rval;
#endif
rb_parser_printf(p, "%"PRIsVALUE, v);
break;
case tINTEGER: case tFLOAT: case tRATIONAL: case tIMAGINARY:
case tSTRING_CONTENT: case tCHAR:
#ifndef RIPPER
v = valp->node->nd_lit;
#else
v = valp->val;
#endif
rb_parser_printf(p, "%+"PRIsVALUE, v);
break;
case tNTH_REF:
#ifndef RIPPER
rb_parser_printf(p, "$%ld", valp->node->nd_nth);
#else
rb_parser_printf(p, "%"PRIsVALUE, valp->val);
#endif
break;
case tBACK_REF:
#ifndef RIPPER
rb_parser_printf(p, "$%c", (int)valp->node->nd_nth);
#else
rb_parser_printf(p, "%"PRIsVALUE, valp->val);
#endif
break;
default:
break;
}
}
static int
assignable0(struct parser_params *p, ID id, const char **err)
{
if (!id) return -1;
switch (id) {
case keyword_self:
*err = "Can't change the value of self";
return -1;
case keyword_nil:
*err = "Can't assign to nil";
return -1;
case keyword_true:
*err = "Can't assign to true";
return -1;
case keyword_false:
*err = "Can't assign to false";
return -1;
case keyword__FILE__:
*err = "Can't assign to __FILE__";
return -1;
case keyword__LINE__:
*err = "Can't assign to __LINE__";
return -1;
case keyword__ENCODING__:
*err = "Can't assign to __ENCODING__";
return -1;
}
switch (id_type(id)) {
case ID_LOCAL:
if (dyna_in_block(p)) {
if (p->max_numparam > NO_PARAM && NUMPARAM_ID_P(id)) {
compile_error(p, "Can't assign to numbered parameter _%d",
NUMPARAM_ID_TO_IDX(id));
return -1;
}
if (dvar_curr(p, id)) return NODE_DASGN_CURR;
if (dvar_defined(p, id)) return NODE_DASGN;
if (local_id(p, id)) return NODE_LASGN;
dyna_var(p, id);
return NODE_DASGN_CURR;
}
else {
if (!local_id(p, id)) local_var(p, id);
return NODE_LASGN;
}
break;
case ID_GLOBAL: return NODE_GASGN;
case ID_INSTANCE: return NODE_IASGN;
case ID_CONST:
if (!p->in_def) return NODE_CDECL;
*err = "dynamic constant assignment";
return -1;
case ID_CLASS: return NODE_CVASGN;
default:
compile_error(p, "identifier %"PRIsVALUE" is not valid to set", rb_id2str(id));
}
return -1;
}
#ifndef RIPPER
static NODE*
assignable(struct parser_params *p, ID id, NODE *val, const YYLTYPE *loc)
{
const char *err = 0;
int node_type = assignable0(p, id, &err);
switch (node_type) {
case NODE_DASGN_CURR: return NEW_DASGN_CURR(id, val, loc);
case NODE_DASGN: return NEW_DASGN(id, val, loc);
case NODE_LASGN: return NEW_LASGN(id, val, loc);
case NODE_GASGN: return NEW_GASGN(id, val, loc);
case NODE_IASGN: return NEW_IASGN(id, val, loc);
case NODE_CDECL: return NEW_CDECL(id, val, 0, loc);
case NODE_CVASGN: return NEW_CVASGN(id, val, loc);
}
if (err) yyerror1(loc, err);
return NEW_BEGIN(0, loc);
}
#else
static VALUE
assignable(struct parser_params *p, VALUE lhs)
{
const char *err = 0;
assignable0(p, get_id(lhs), &err);
if (err) lhs = assign_error(p, lhs);
return lhs;
}
#endif
static int
is_private_local_id(ID name)
{
VALUE s;
if (name == idUScore) return 1;
if (!is_local_id(name)) return 0;
s = rb_id2str(name);
if (!s) return 0;
return RSTRING_PTR(s)[0] == '_';
}
static int
shadowing_lvar_0(struct parser_params *p, ID name)
{
if (is_private_local_id(name)) return 1;
if (dyna_in_block(p)) {
if (dvar_curr(p, name)) {
yyerror0("duplicated argument name");
}
else if (dvar_defined(p, name) || local_id(p, name)) {
vtable_add(p->lvtbl->vars, name);
if (p->lvtbl->used) {
vtable_add(p->lvtbl->used, (ID)p->ruby_sourceline | LVAR_USED);
}
return 0;
}
}
else {
if (local_id(p, name)) {
yyerror0("duplicated argument name");
}
}
return 1;
}
static ID
shadowing_lvar(struct parser_params *p, ID name)
{
shadowing_lvar_0(p, name);
return name;
}
static void
new_bv(struct parser_params *p, ID name)
{
if (!name) return;
if (!is_local_id(name)) {
compile_error(p, "invalid local variable - %"PRIsVALUE,
rb_id2str(name));
return;
}
if (!shadowing_lvar_0(p, name)) return;
dyna_var(p, name);
}
#ifndef RIPPER
static NODE *
aryset(struct parser_params *p, NODE *recv, NODE *idx, const YYLTYPE *loc)
{
return NEW_ATTRASGN(recv, tASET, idx, loc);
}
static void
block_dup_check(struct parser_params *p, NODE *node1, NODE *node2)
{
if (node2 && node1 && nd_type(node1) == NODE_BLOCK_PASS) {
compile_error(p, "both block arg and actual block given");
}
}
static NODE *
attrset(struct parser_params *p, NODE *recv, ID atype, ID id, const YYLTYPE *loc)
{
if (!CALL_Q_P(atype)) id = rb_id_attrset(id);
return NEW_ATTRASGN(recv, id, 0, loc);
}
static void
rb_backref_error(struct parser_params *p, NODE *node)
{
switch (nd_type(node)) {
case NODE_NTH_REF:
compile_error(p, "Can't set variable $%ld", node->nd_nth);
break;
case NODE_BACK_REF:
compile_error(p, "Can't set variable $%c", (int)node->nd_nth);
break;
}
}
static NODE *
arg_append(struct parser_params *p, NODE *node1, NODE *node2, const YYLTYPE *loc)
{
if (!node1) return NEW_LIST(node2, &node2->nd_loc);
switch (nd_type(node1)) {
case NODE_LIST:
return list_append(p, node1, node2);
case NODE_BLOCK_PASS:
node1->nd_head = arg_append(p, node1->nd_head, node2, loc);
node1->nd_loc.end_pos = node1->nd_head->nd_loc.end_pos;
return node1;
case NODE_ARGSPUSH:
node1->nd_body = list_append(p, NEW_LIST(node1->nd_body, &node1->nd_body->nd_loc), node2);
node1->nd_loc.end_pos = node1->nd_body->nd_loc.end_pos;
nd_set_type(node1, NODE_ARGSCAT);
return node1;
case NODE_ARGSCAT:
if (nd_type(node1->nd_body) != NODE_LIST) break;
node1->nd_body = list_append(p, node1->nd_body, node2);
node1->nd_loc.end_pos = node1->nd_body->nd_loc.end_pos;
return node1;
}
return NEW_ARGSPUSH(node1, node2, loc);
}
static NODE *
arg_concat(struct parser_params *p, NODE *node1, NODE *node2, const YYLTYPE *loc)
{
if (!node2) return node1;
switch (nd_type(node1)) {
case NODE_BLOCK_PASS:
if (node1->nd_head)
node1->nd_head = arg_concat(p, node1->nd_head, node2, loc);
else
node1->nd_head = NEW_LIST(node2, loc);
return node1;
case NODE_ARGSPUSH:
if (nd_type(node2) != NODE_LIST) break;
node1->nd_body = list_concat(NEW_LIST(node1->nd_body, loc), node2);
nd_set_type(node1, NODE_ARGSCAT);
return node1;
case NODE_ARGSCAT:
if (nd_type(node2) != NODE_LIST ||
nd_type(node1->nd_body) != NODE_LIST) break;
node1->nd_body = list_concat(node1->nd_body, node2);
return node1;
}
return NEW_ARGSCAT(node1, node2, loc);
}
static NODE *
last_arg_append(struct parser_params *p, NODE *args, NODE *last_arg, const YYLTYPE *loc)
{
NODE *n1;
if ((n1 = splat_array(args)) != 0) {
return list_append(p, n1, last_arg);
}
return arg_append(p, args, last_arg, loc);
}
static NODE *
rest_arg_append(struct parser_params *p, NODE *args, NODE *rest_arg, const YYLTYPE *loc)
{
NODE *n1;
if ((nd_type(rest_arg) == NODE_LIST) && (n1 = splat_array(args)) != 0) {
return list_concat(n1, rest_arg);
}
return arg_concat(p, args, rest_arg, loc);
}
static NODE *
splat_array(NODE* node)
{
if (nd_type(node) == NODE_SPLAT) node = node->nd_head;
if (nd_type(node) == NODE_LIST) return node;
return 0;
}
static void
mark_lvar_used(struct parser_params *p, NODE *rhs)
{
ID *vidp = NULL;
if (!rhs) return;
switch (nd_type(rhs)) {
case NODE_LASGN:
if (local_id_ref(p, rhs->nd_vid, &vidp)) {
if (vidp) *vidp |= LVAR_USED;
}
break;
case NODE_DASGN:
case NODE_DASGN_CURR:
if (dvar_defined_ref(p, rhs->nd_vid, &vidp)) {
if (vidp) *vidp |= LVAR_USED;
}
break;
#if 0
case NODE_MASGN:
for (rhs = rhs->nd_head; rhs; rhs = rhs->nd_next) {
mark_lvar_used(p, rhs->nd_head);
}
break;
#endif
}
}
static NODE *
node_assign(struct parser_params *p, NODE *lhs, NODE *rhs, const YYLTYPE *loc)
{
if (!lhs) return 0;
switch (nd_type(lhs)) {
case NODE_GASGN:
case NODE_IASGN:
case NODE_LASGN:
case NODE_DASGN:
case NODE_DASGN_CURR:
case NODE_MASGN:
case NODE_CDECL:
case NODE_CVASGN:
lhs->nd_value = rhs;
nd_set_loc(lhs, loc);
break;
case NODE_ATTRASGN:
lhs->nd_args = arg_append(p, lhs->nd_args, rhs, loc);
nd_set_loc(lhs, loc);
break;
default:
/* should not happen */
break;
}
return lhs;
}
static NODE *
value_expr_check(struct parser_params *p, NODE *node)
{
NODE *void_node = 0, *vn;
if (!node) {
rb_warning0("empty expression");
}
while (node) {
switch (nd_type(node)) {
case NODE_RETURN:
case NODE_BREAK:
case NODE_NEXT:
case NODE_REDO:
case NODE_RETRY:
return void_node ? void_node : node;
case NODE_BLOCK:
while (node->nd_next) {
node = node->nd_next;
}
node = node->nd_head;
break;
case NODE_BEGIN:
node = node->nd_body;
break;
case NODE_IF:
case NODE_UNLESS:
if (!node->nd_body) {
return NULL;
}
else if (!node->nd_else) {
return NULL;
}
vn = value_expr_check(p, node->nd_body);
if (!vn) return NULL;
if (!void_node) void_node = vn;
node = node->nd_else;
break;
case NODE_AND:
case NODE_OR:
node = node->nd_1st;
break;
case NODE_LASGN:
case NODE_DASGN:
case NODE_DASGN_CURR:
case NODE_MASGN:
mark_lvar_used(p, node);
return NULL;
default:
return NULL;
}
}
return NULL;
}
static int
value_expr_gen(struct parser_params *p, NODE *node)
{
NODE *void_node = value_expr_check(p, node);
if (void_node) {
yyerror1(&void_node->nd_loc, "void value expression");
/* or "control never reach"? */
return FALSE;
}
return TRUE;
}
static void
void_expr(struct parser_params *p, NODE *node)
{
const char *useless = 0;
if (!RTEST(ruby_verbose)) return;
if (!node || !(node = nd_once_body(node))) return;
switch (nd_type(node)) {
case NODE_OPCALL:
switch (node->nd_mid) {
case '+':
case '-':
case '*':
case '/':
case '%':
case tPOW:
case tUPLUS:
case tUMINUS:
case '|':
case '^':
case '&':
case tCMP:
case '>':
case tGEQ:
case '<':
case tLEQ:
case tEQ:
case tNEQ:
useless = rb_id2name(node->nd_mid);
break;
}
break;
case NODE_LVAR:
case NODE_DVAR:
case NODE_GVAR:
case NODE_IVAR:
case NODE_CVAR:
case NODE_NTH_REF:
case NODE_BACK_REF:
useless = "a variable";
break;
case NODE_CONST:
useless = "a constant";
break;
case NODE_LIT:
case NODE_STR:
case NODE_DSTR:
case NODE_DREGX:
useless = "a literal";
break;
case NODE_COLON2:
case NODE_COLON3:
useless = "::";
break;
case NODE_DOT2:
useless = "..";
break;
case NODE_DOT3:
useless = "...";
break;
case NODE_SELF:
useless = "self";
break;
case NODE_NIL:
useless = "nil";
break;
case NODE_TRUE:
useless = "true";
break;
case NODE_FALSE:
useless = "false";
break;
case NODE_DEFINED:
useless = "defined?";
break;
}
if (useless) {
rb_warn1L(nd_line(node), "possibly useless use of %s in void context", WARN_S(useless));
}
}
static NODE *
void_stmts(struct parser_params *p, NODE *node)
{
NODE *const n = node;
if (!RTEST(ruby_verbose)) return n;
if (!node) return n;
if (nd_type(node) != NODE_BLOCK) return n;
while (node->nd_next) {
void_expr(p, node->nd_head);
node = node->nd_next;
}
return n;
}
static NODE *
remove_begin(NODE *node)
{
NODE **n = &node, *n1 = node;
while (n1 && nd_type(n1) == NODE_BEGIN && n1->nd_body) {
*n = n1 = n1->nd_body;
}
return node;
}
static NODE *
remove_begin_all(NODE *node)
{
NODE **n = &node, *n1 = node;
while (n1 && nd_type(n1) == NODE_BEGIN) {
*n = n1 = n1->nd_body;
}
return node;
}
static void
reduce_nodes(struct parser_params *p, NODE **body)
{
NODE *node = *body;
if (!node) {
*body = NEW_NIL(&NULL_LOC);
return;
}
#define subnodes(n1, n2) \
((!node->n1) ? (node->n2 ? (body = &node->n2, 1) : 0) : \
(!node->n2) ? (body = &node->n1, 1) : \
(reduce_nodes(p, &node->n1), body = &node->n2, 1))
while (node) {
int newline = (int)(node->flags & NODE_FL_NEWLINE);
switch (nd_type(node)) {
end:
case NODE_NIL:
*body = 0;
return;
case NODE_RETURN:
*body = node = node->nd_stts;
if (newline && node) node->flags |= NODE_FL_NEWLINE;
continue;
case NODE_BEGIN:
*body = node = node->nd_body;
if (newline && node) node->flags |= NODE_FL_NEWLINE;
continue;
case NODE_BLOCK:
body = &node->nd_end->nd_head;
break;
case NODE_IF:
case NODE_UNLESS:
if (subnodes(nd_body, nd_else)) break;
return;
case NODE_CASE:
body = &node->nd_body;
break;
case NODE_WHEN:
if (!subnodes(nd_body, nd_next)) goto end;
break;
case NODE_ENSURE:
if (!subnodes(nd_head, nd_resq)) goto end;
break;
case NODE_RESCUE:
if (node->nd_else) {
body = &node->nd_resq;
break;
}
if (!subnodes(nd_head, nd_resq)) goto end;
break;
default:
return;
}
node = *body;
if (newline && node) node->flags |= NODE_FL_NEWLINE;
}
#undef subnodes
}
static int
is_static_content(NODE *node)
{
if (!node) return 1;
switch (nd_type(node)) {
case NODE_HASH:
if (!(node = node->nd_head)) break;
case NODE_LIST:
do {
if (!is_static_content(node->nd_head)) return 0;
} while ((node = node->nd_next) != 0);
case NODE_LIT:
case NODE_STR:
case NODE_NIL:
case NODE_TRUE:
case NODE_FALSE:
case NODE_ZLIST:
break;
default:
return 0;
}
return 1;
}
static int
assign_in_cond(struct parser_params *p, NODE *node)
{
switch (nd_type(node)) {
case NODE_MASGN:
case NODE_LASGN:
case NODE_DASGN:
case NODE_DASGN_CURR:
case NODE_GASGN:
case NODE_IASGN:
break;
default:
return 0;
}
if (!node->nd_value) return 1;
if (is_static_content(node->nd_value)) {
/* reports always */
parser_warn(p, node->nd_value, "found `= literal' in conditional, should be ==");
}
return 1;
}
enum cond_type {
COND_IN_OP,
COND_IN_COND,
COND_IN_FF
};
#define SWITCH_BY_COND_TYPE(t, w, arg) \
switch (t) { \
case COND_IN_OP: break; \
case COND_IN_COND: rb_##w##0(arg "literal in condition"); break; \
case COND_IN_FF: rb_##w##0(arg "literal in flip-flop"); break; \
}
static NODE *cond0(struct parser_params*,NODE*,enum cond_type,const YYLTYPE*);
static NODE*
range_op(struct parser_params *p, NODE *node, const YYLTYPE *loc)
{
enum node_type type;
if (node == 0) return 0;
type = nd_type(node);
value_expr(node);
if (type == NODE_LIT && FIXNUM_P(node->nd_lit)) {
if (!e_option_supplied(p)) parser_warn(p, node, "integer literal in flip-flop");
return NEW_CALL(node, tEQ, NEW_LIST(NEW_GVAR(rb_intern("$."), loc), loc), loc);
}
return cond0(p, node, COND_IN_FF, loc);
}
static NODE*
cond0(struct parser_params *p, NODE *node, enum cond_type type, const YYLTYPE *loc)
{
if (node == 0) return 0;
if (!(node = nd_once_body(node))) return 0;
assign_in_cond(p, node);
switch (nd_type(node)) {
case NODE_DSTR:
case NODE_EVSTR:
case NODE_STR:
SWITCH_BY_COND_TYPE(type, warn, "string ")
break;
case NODE_DREGX:
if (!e_option_supplied(p)) SWITCH_BY_COND_TYPE(type, warning, "regex ")
return NEW_MATCH2(node, NEW_GVAR(idLASTLINE, loc), loc);
case NODE_AND:
case NODE_OR:
node->nd_1st = cond0(p, node->nd_1st, COND_IN_COND, loc);
node->nd_2nd = cond0(p, node->nd_2nd, COND_IN_COND, loc);
break;
case NODE_DOT2:
case NODE_DOT3:
node->nd_beg = range_op(p, node->nd_beg, loc);
node->nd_end = range_op(p, node->nd_end, loc);
if (nd_type(node) == NODE_DOT2) nd_set_type(node,NODE_FLIP2);
else if (nd_type(node) == NODE_DOT3) nd_set_type(node, NODE_FLIP3);
break;
case NODE_DSYM:
SWITCH_BY_COND_TYPE(type, warning, "string ")
break;
case NODE_LIT:
if (RB_TYPE_P(node->nd_lit, T_REGEXP)) {
if (!e_option_supplied(p)) SWITCH_BY_COND_TYPE(type, warn, "regex ")
nd_set_type(node, NODE_MATCH);
}
else if (node->nd_lit == Qtrue ||
node->nd_lit == Qfalse) {
/* booleans are OK, e.g., while true */
}
else {
SWITCH_BY_COND_TYPE(type, warning, "")
}
default:
break;
}
return node;
}
static NODE*
cond(struct parser_params *p, NODE *node, const YYLTYPE *loc)
{
if (node == 0) return 0;
return cond0(p, node, COND_IN_COND, loc);
}
static NODE*
method_cond(struct parser_params *p, NODE *node, const YYLTYPE *loc)
{
if (node == 0) return 0;
return cond0(p, node, COND_IN_OP, loc);
}
static NODE*
new_if(struct parser_params *p, NODE *cc, NODE *left, NODE *right, const YYLTYPE *loc)
{
if (!cc) return right;
cc = cond0(p, cc, COND_IN_COND, loc);
return newline_node(NEW_IF(cc, left, right, loc));
}
static NODE*
new_unless(struct parser_params *p, NODE *cc, NODE *left, NODE *right, const YYLTYPE *loc)
{
if (!cc) return right;
cc = cond0(p, cc, COND_IN_COND, loc);
return newline_node(NEW_UNLESS(cc, left, right, loc));
}
static NODE*
logop(struct parser_params *p, ID id, NODE *left, NODE *right,
const YYLTYPE *op_loc, const YYLTYPE *loc)
{
enum node_type type = id == idAND || id == idANDOP ? NODE_AND : NODE_OR;
NODE *op;
value_expr(left);
if (left && (enum node_type)nd_type(left) == type) {
NODE *node = left, *second;
while ((second = node->nd_2nd) != 0 && (enum node_type)nd_type(second) == type) {
node = second;
}
node->nd_2nd = NEW_NODE(type, second, right, 0, loc);
nd_set_line(node->nd_2nd, op_loc->beg_pos.lineno);
left->nd_loc.end_pos = loc->end_pos;
return left;
}
op = NEW_NODE(type, left, right, 0, loc);
nd_set_line(op, op_loc->beg_pos.lineno);
return op;
}
static void
no_blockarg(struct parser_params *p, NODE *node)
{
if (node && nd_type(node) == NODE_BLOCK_PASS) {
compile_error(p, "block argument should not be given");
}
}
static NODE *
ret_args(struct parser_params *p, NODE *node)
{
if (node) {
no_blockarg(p, node);
if (nd_type(node) == NODE_LIST) {
if (node->nd_next == 0) {
node = node->nd_head;
}
else {
nd_set_type(node, NODE_VALUES);
}
}
}
return node;
}
static NODE *
new_yield(struct parser_params *p, NODE *node, const YYLTYPE *loc)
{
if (node) no_blockarg(p, node);
return NEW_YIELD(node, loc);
}
static VALUE
negate_lit(struct parser_params *p, VALUE lit)
{
if (FIXNUM_P(lit)) {
return LONG2FIX(-FIX2LONG(lit));
}
if (SPECIAL_CONST_P(lit)) {
#if USE_FLONUM
if (FLONUM_P(lit)) {
return DBL2NUM(-RFLOAT_VALUE(lit));
}
#endif
goto unknown;
}
switch (BUILTIN_TYPE(lit)) {
case T_BIGNUM:
BIGNUM_NEGATE(lit);
lit = rb_big_norm(lit);
break;
case T_RATIONAL:
RRATIONAL_SET_NUM(lit, negate_lit(p, RRATIONAL(lit)->num));
break;
case T_COMPLEX:
RCOMPLEX_SET_REAL(lit, negate_lit(p, RCOMPLEX(lit)->real));
RCOMPLEX_SET_IMAG(lit, negate_lit(p, RCOMPLEX(lit)->imag));
break;
case T_FLOAT:
RFLOAT(lit)->float_value = -RFLOAT_VALUE(lit);
break;
unknown:
default:
rb_parser_fatal(p, "unknown literal type (%s) passed to negate_lit",
rb_builtin_class_name(lit));
break;
}
return lit;
}
static NODE *
arg_blk_pass(NODE *node1, NODE *node2)
{
if (node2) {
if (!node1) return node2;
node2->nd_head = node1;
nd_set_first_lineno(node2, nd_first_lineno(node1));
nd_set_first_column(node2, nd_first_column(node1));
return node2;
}
return node1;
}
static bool
args_info_empty_p(struct rb_args_info *args)
{
if (args->pre_args_num) return false;
if (args->post_args_num) return false;
if (args->rest_arg) return false;
if (args->opt_args) return false;
if (args->block_arg) return false;
if (args->kw_args) return false;
if (args->kw_rest_arg) return false;
return true;
}
static NODE*
new_args(struct parser_params *p, NODE *pre_args, NODE *opt_args, ID rest_arg, NODE *post_args, NODE *tail, const YYLTYPE *loc)
{
int saved_line = p->ruby_sourceline;
struct rb_args_info *args = tail->nd_ainfo;
args->pre_args_num = pre_args ? rb_long2int(pre_args->nd_plen) : 0;
args->pre_init = pre_args ? pre_args->nd_next : 0;
args->post_args_num = post_args ? rb_long2int(post_args->nd_plen) : 0;
args->post_init = post_args ? post_args->nd_next : 0;
args->first_post_arg = post_args ? post_args->nd_pid : 0;
args->rest_arg = rest_arg;
args->opt_args = opt_args;
args->ruby2_keywords = rest_arg == idFWD_REST;
p->ruby_sourceline = saved_line;
nd_set_loc(tail, loc);
return tail;
}
static NODE*
new_args_tail(struct parser_params *p, NODE *kw_args, ID kw_rest_arg, ID block, const YYLTYPE *loc)
{
int saved_line = p->ruby_sourceline;
NODE *node;
VALUE tmpbuf = rb_imemo_tmpbuf_auto_free_pointer();
struct rb_args_info *args = ZALLOC(struct rb_args_info);
rb_imemo_tmpbuf_set_ptr(tmpbuf, args);
args->imemo = tmpbuf;
node = NEW_NODE(NODE_ARGS, 0, 0, args, &NULL_LOC);
RB_OBJ_WRITTEN(p->ast, Qnil, tmpbuf);
if (p->error_p) return node;
args->block_arg = block;
args->kw_args = kw_args;
if (kw_args) {
/*
* def foo(k1: 1, kr1:, k2: 2, **krest, &b)
* variable order: k1, kr1, k2, &b, internal_id, krest
* #=> <reorder>
* variable order: kr1, k1, k2, internal_id, krest, &b
*/
ID kw_bits = internal_id(p), *required_kw_vars, *kw_vars;
struct vtable *vtargs = p->lvtbl->args;
NODE *kwn = kw_args;
vtable_pop(vtargs, !!block + !!kw_rest_arg);
required_kw_vars = kw_vars = &vtargs->tbl[vtargs->pos];
while (kwn) {
if (!NODE_REQUIRED_KEYWORD_P(kwn->nd_body))
--kw_vars;
--required_kw_vars;
kwn = kwn->nd_next;
}
for (kwn = kw_args; kwn; kwn = kwn->nd_next) {
ID vid = kwn->nd_body->nd_vid;
if (NODE_REQUIRED_KEYWORD_P(kwn->nd_body)) {
*required_kw_vars++ = vid;
}
else {
*kw_vars++ = vid;
}
}
arg_var(p, kw_bits);
if (kw_rest_arg) arg_var(p, kw_rest_arg);
if (block) arg_var(p, block);
args->kw_rest_arg = NEW_DVAR(kw_rest_arg, loc);
args->kw_rest_arg->nd_cflag = kw_bits;
}
else if (kw_rest_arg == idNil) {
args->no_kwarg = 1;
}
else if (kw_rest_arg) {
args->kw_rest_arg = NEW_DVAR(kw_rest_arg, loc);
}
p->ruby_sourceline = saved_line;
return node;
}
static NODE *
args_with_numbered(struct parser_params *p, NODE *args, int max_numparam)
{
if (max_numparam > NO_PARAM) {
if (!args) args = new_args_tail(p, 0, 0, 0, 0);
args->nd_ainfo->pre_args_num = max_numparam;
}
return args;
}
static NODE*
new_array_pattern(struct parser_params *p, NODE *constant, NODE *pre_arg, NODE *aryptn, const YYLTYPE *loc)
{
struct rb_ary_pattern_info *apinfo = aryptn->nd_apinfo;
aryptn->nd_pconst = constant;
if (pre_arg) {
NODE *pre_args = NEW_LIST(pre_arg, loc);
if (apinfo->pre_args) {
apinfo->pre_args = list_concat(pre_args, apinfo->pre_args);
}
else {
apinfo->pre_args = pre_args;
}
}
return aryptn;
}
static NODE*
new_array_pattern_tail(struct parser_params *p, NODE *pre_args, int has_rest, ID rest_arg, NODE *post_args, const YYLTYPE *loc)
{
int saved_line = p->ruby_sourceline;
NODE *node;
VALUE tmpbuf = rb_imemo_tmpbuf_auto_free_pointer();
struct rb_ary_pattern_info *apinfo = ZALLOC(struct rb_ary_pattern_info);
rb_imemo_tmpbuf_set_ptr(tmpbuf, apinfo);
node = NEW_NODE(NODE_ARYPTN, 0, 0, apinfo, loc);
apinfo->imemo = tmpbuf;
RB_OBJ_WRITTEN(p->ast, Qnil, tmpbuf);
apinfo->pre_args = pre_args;
if (has_rest) {
if (rest_arg) {
apinfo->rest_arg = assignable(p, rest_arg, 0, loc);
}
else {
apinfo->rest_arg = NODE_SPECIAL_NO_NAME_REST;
}
}
else {
apinfo->rest_arg = NULL;
}
apinfo->post_args = post_args;
p->ruby_sourceline = saved_line;
return node;
}
static NODE*
new_hash_pattern(struct parser_params *p, NODE *constant, NODE *hshptn, const YYLTYPE *loc)
{
hshptn->nd_pconst = constant;
return hshptn;
}
static NODE*
new_hash_pattern_tail(struct parser_params *p, NODE *kw_args, ID kw_rest_arg, const YYLTYPE *loc)
{
int saved_line = p->ruby_sourceline;
NODE *node, *kw_rest_arg_node;
if (kw_rest_arg == idNil) {
kw_rest_arg_node = NODE_SPECIAL_NO_REST_KEYWORD;
}
else if (kw_rest_arg) {
kw_rest_arg_node = assignable(p, kw_rest_arg, 0, loc);
}
else {
kw_rest_arg_node = NULL;
}
node = NEW_NODE(NODE_HSHPTN, 0, kw_args, kw_rest_arg_node, loc);
p->ruby_sourceline = saved_line;
return node;
}
static NODE*
dsym_node(struct parser_params *p, NODE *node, const YYLTYPE *loc)
{
VALUE lit;
if (!node) {
return NEW_LIT(ID2SYM(idNULL), loc);
}
switch (nd_type(node)) {
case NODE_DSTR:
nd_set_type(node, NODE_DSYM);
nd_set_loc(node, loc);
break;
case NODE_STR:
lit = node->nd_lit;
RB_OBJ_WRITTEN(p->ast, Qnil, node->nd_lit = ID2SYM(rb_intern_str(lit)));
nd_set_type(node, NODE_LIT);
nd_set_loc(node, loc);
break;
default:
node = NEW_NODE(NODE_DSYM, Qnil, 1, NEW_LIST(node, loc), loc);
break;
}
return node;
}
static int
append_literal_keys(st_data_t k, st_data_t v, st_data_t h)
{
NODE *node = (NODE *)v;
NODE **result = (NODE **)h;
node->nd_alen = 2;
node->nd_next->nd_end = node->nd_next;
node->nd_next->nd_next = 0;
if (*result)
list_concat(*result, node);
else
*result = node;
return ST_CONTINUE;
}
static NODE *
remove_duplicate_keys(struct parser_params *p, NODE *hash)
{
st_table *literal_keys = st_init_numtable_with_size(hash->nd_alen / 2);
NODE *result = 0;
rb_code_location_t loc = hash->nd_loc;
while (hash && hash->nd_head && hash->nd_next) {
NODE *head = hash->nd_head;
NODE *value = hash->nd_next;
NODE *next = value->nd_next;
VALUE key = (VALUE)head;
st_data_t data;
if (nd_type(head) == NODE_LIT &&
st_lookup(literal_keys, (key = head->nd_lit), &data)) {
rb_compile_warn(p->ruby_sourcefile, nd_line((NODE *)data),
"key %+"PRIsVALUE" is duplicated and overwritten on line %d",
head->nd_lit, nd_line(head));
head = ((NODE *)data)->nd_next;
head->nd_head = block_append(p, head->nd_head, value->nd_head);
}
else {
st_insert(literal_keys, (st_data_t)key, (st_data_t)hash);
}
hash = next;
}
st_foreach(literal_keys, append_literal_keys, (st_data_t)&result);
st_free_table(literal_keys);
if (hash) {
if (!result) result = hash;
else list_concat(result, hash);
}
result->nd_loc = loc;
return result;
}
static NODE *
new_hash(struct parser_params *p, NODE *hash, const YYLTYPE *loc)
{
if (hash) hash = remove_duplicate_keys(p, hash);
return NEW_HASH(hash, loc);
}
static void
error_duplicate_pattern_variable(struct parser_params *p, ID id, const YYLTYPE *loc)
{
if (is_private_local_id(id)) {
return;
}
if (st_is_member(p->pvtbl, id)) {
yyerror1(loc, "duplicated variable name");
}
else {
st_insert(p->pvtbl, (st_data_t)id, 0);
}
}
static void
error_duplicate_keys(struct parser_params *p, NODE *hash)
{
st_table *literal_keys = st_init_numtable_with_size(hash->nd_alen / 2);
while (hash && hash->nd_head && hash->nd_next) {
NODE *head = hash->nd_head;
NODE *next = hash->nd_next->nd_next;
VALUE key = (VALUE)head;
if (nd_type(head) != NODE_LIT) {
yyerror1(&head->nd_loc, "key must be symbol literal");
}
if (st_is_member(literal_keys, (key = head->nd_lit))) {
yyerror1(&head->nd_loc, "duplicated key name");
}
else {
st_insert(literal_keys, (st_data_t)key, (st_data_t)hash);
}
hash = next;
}
st_free_table(literal_keys);
return;
}
static NODE *
new_unique_key_hash(struct parser_params *p, NODE *hash, const YYLTYPE *loc)
{
if (hash) {
error_duplicate_keys(p, hash);
}
return NEW_HASH(hash, loc);
}
#endif /* !RIPPER */
#ifndef RIPPER
static NODE *
new_op_assign(struct parser_params *p, NODE *lhs, ID op, NODE *rhs, const YYLTYPE *loc)
{
NODE *asgn;
if (lhs) {
ID vid = lhs->nd_vid;
YYLTYPE lhs_loc = lhs->nd_loc;
if (op == tOROP) {
lhs->nd_value = rhs;
nd_set_loc(lhs, loc);
asgn = NEW_OP_ASGN_OR(gettable(p, vid, &lhs_loc), lhs, loc);
if (is_notop_id(vid)) {
switch (id_type(vid)) {
case ID_GLOBAL:
case ID_INSTANCE:
case ID_CLASS:
asgn->nd_aid = vid;
}
}
}
else if (op == tANDOP) {
lhs->nd_value = rhs;
nd_set_loc(lhs, loc);
asgn = NEW_OP_ASGN_AND(gettable(p, vid, &lhs_loc), lhs, loc);
}
else {
asgn = lhs;
asgn->nd_value = NEW_CALL(gettable(p, vid, &lhs_loc), op, NEW_LIST(rhs, &rhs->nd_loc), loc);
nd_set_loc(asgn, loc);
}
}
else {
asgn = NEW_BEGIN(0, loc);
}
return asgn;
}
static NODE *
new_ary_op_assign(struct parser_params *p, NODE *ary,
NODE *args, ID op, NODE *rhs, const YYLTYPE *args_loc, const YYLTYPE *loc)
{
NODE *asgn;
args = make_list(args, args_loc);
if (nd_type(args) == NODE_BLOCK_PASS) {
args = NEW_ARGSCAT(args, rhs, loc);
}
else {
args = arg_concat(p, args, rhs, loc);
}
asgn = NEW_OP_ASGN1(ary, op, args, loc);
fixpos(asgn, ary);
return asgn;
}
static NODE *
new_attr_op_assign(struct parser_params *p, NODE *lhs,
ID atype, ID attr, ID op, NODE *rhs, const YYLTYPE *loc)
{
NODE *asgn;
asgn = NEW_OP_ASGN2(lhs, CALL_Q_P(atype), attr, op, rhs, loc);
fixpos(asgn, lhs);
return asgn;
}
static NODE *
new_const_op_assign(struct parser_params *p, NODE *lhs, ID op, NODE *rhs, const YYLTYPE *loc)
{
NODE *asgn;
if (lhs) {
asgn = NEW_OP_CDECL(lhs, op, rhs, loc);
}
else {
asgn = NEW_BEGIN(0, loc);
}
fixpos(asgn, lhs);
return asgn;
}
static NODE *
const_decl(struct parser_params *p, NODE *path, const YYLTYPE *loc)
{
if (p->in_def) {
yyerror1(loc, "dynamic constant assignment");
}
return NEW_CDECL(0, 0, (path), loc);
}
#else
static VALUE
const_decl(struct parser_params *p, VALUE path)
{
if (p->in_def) {
path = dispatch1(assign_error, path);
ripper_error(p);
}
return path;
}
static VALUE
assign_error(struct parser_params *p, VALUE a)
{
a = dispatch1(assign_error, a);
ripper_error(p);
return a;
}
static VALUE
var_field(struct parser_params *p, VALUE a)
{
return ripper_new_yylval(p, get_id(a), dispatch1(var_field, a), 0);
}
#endif
#ifndef RIPPER
static NODE *
new_bodystmt(struct parser_params *p, NODE *head, NODE *rescue, NODE *rescue_else, NODE *ensure, const YYLTYPE *loc)
{
NODE *result = head;
if (rescue) {
NODE *tmp = rescue_else ? rescue_else : rescue;
YYLTYPE rescue_loc = code_loc_gen(&head->nd_loc, &tmp->nd_loc);
result = NEW_RESCUE(head, rescue, rescue_else, &rescue_loc);
nd_set_line(result, rescue->nd_loc.beg_pos.lineno);
}
else if (rescue_else) {
result = block_append(p, result, rescue_else);
}
if (ensure) {
result = NEW_ENSURE(result, ensure, loc);
}
fixpos(result, head);
return result;
}
#endif
static void
warn_unused_var(struct parser_params *p, struct local_vars *local)
{
int i, cnt;
ID *v, *u;
if (!local->used) return;
v = local->vars->tbl;
u = local->used->tbl;
cnt = local->used->pos;
if (cnt != local->vars->pos) {
rb_parser_fatal(p, "local->used->pos != local->vars->pos");
}
for (i = 0; i < cnt; ++i) {
if (!v[i] || (u[i] & LVAR_USED)) continue;
if (is_private_local_id(v[i])) continue;
rb_warn1L((int)u[i], "assigned but unused variable - %"PRIsWARN, rb_id2str(v[i]));
}
}
static void
local_push(struct parser_params *p, int toplevel_scope)
{
struct local_vars *local;
int inherits_dvars = toplevel_scope && compile_for_eval;
int warn_unused_vars = RTEST(ruby_verbose);
local = ALLOC(struct local_vars);
local->prev = p->lvtbl;
local->args = vtable_alloc(0);
local->vars = vtable_alloc(inherits_dvars ? DVARS_INHERIT : DVARS_TOPSCOPE);
#ifndef RIPPER
if (toplevel_scope && compile_for_eval) warn_unused_vars = 0;
if (toplevel_scope && e_option_supplied(p)) warn_unused_vars = 0;
local->numparam.outer = 0;
local->numparam.inner = 0;
local->numparam.current = 0;
#endif
local->used = warn_unused_vars ? vtable_alloc(0) : 0;
# if WARN_PAST_SCOPE
local->past = 0;
# endif
CMDARG_PUSH(0);
COND_PUSH(0);
p->lvtbl = local;
}
static void
local_pop(struct parser_params *p)
{
struct local_vars *local = p->lvtbl->prev;
if (p->lvtbl->used) {
warn_unused_var(p, p->lvtbl);
vtable_free(p->lvtbl->used);
}
# if WARN_PAST_SCOPE
while (p->lvtbl->past) {
struct vtable *past = p->lvtbl->past;
p->lvtbl->past = past->prev;
vtable_free(past);
}
# endif
vtable_free(p->lvtbl->args);
vtable_free(p->lvtbl->vars);
CMDARG_POP();
COND_POP();
ruby_sized_xfree(p->lvtbl, sizeof(*p->lvtbl));
p->lvtbl = local;
}
#ifndef RIPPER
static ID*
local_tbl(struct parser_params *p)
{
int cnt_args = vtable_size(p->lvtbl->args);
int cnt_vars = vtable_size(p->lvtbl->vars);
int cnt = cnt_args + cnt_vars;
int i, j;
ID *buf;
VALUE tbl = 0;
if (cnt <= 0) return 0;
tbl = rb_imemo_tmpbuf_auto_free_pointer();
buf = ALLOC_N(ID, cnt + 2);
rb_imemo_tmpbuf_set_ptr(tbl, buf);
MEMCPY(buf+1, p->lvtbl->args->tbl, ID, cnt_args);
/* remove IDs duplicated to warn shadowing */
for (i = 0, j = cnt_args+1; i < cnt_vars; ++i) {
ID id = p->lvtbl->vars->tbl[i];
if (!vtable_included(p->lvtbl->args, id)) {
buf[j++] = id;
}
}
if (--j < cnt) {
REALLOC_N(buf, ID, (cnt = j) + 2);
rb_imemo_tmpbuf_set_ptr(tbl, buf);
}
buf[0] = cnt;
buf[cnt + 1] = (ID)tbl;
RB_OBJ_WRITTEN(p->ast, Qnil, tbl);
return buf;
}
static NODE*
node_newnode_with_locals(struct parser_params *p, enum node_type type, VALUE a1, VALUE a2, const rb_code_location_t *loc)
{
ID *a0;
NODE *n;
a0 = local_tbl(p);
n = NEW_NODE(type, a0, a1, a2, loc);
return n;
}
#endif
static void
arg_var(struct parser_params *p, ID id)
{
vtable_add(p->lvtbl->args, id);
}
static void
local_var(struct parser_params *p, ID id)
{
if (NUMPARAM_ID_P(id)) {
rb_warn1("`_%d' is used as numbered parameter",
WARN_I(NUMPARAM_ID_TO_IDX(id)));
}
vtable_add(p->lvtbl->vars, id);
if (p->lvtbl->used) {
vtable_add(p->lvtbl->used, (ID)p->ruby_sourceline);
}
}
static int
local_id_ref(struct parser_params *p, ID id, ID **vidrefp)
{
struct vtable *vars, *args, *used;
vars = p->lvtbl->vars;
args = p->lvtbl->args;
used = p->lvtbl->used;
while (vars && !DVARS_TERMINAL_P(vars->prev)) {
vars = vars->prev;
args = args->prev;
if (used) used = used->prev;
}
if (vars && vars->prev == DVARS_INHERIT) {
return rb_local_defined(id, p->parent_iseq);
}
else if (vtable_included(args, id)) {
return 1;
}
else {
int i = vtable_included(vars, id);
if (i && used && vidrefp) *vidrefp = &used->tbl[i-1];
return i != 0;
}
}
static int
local_id(struct parser_params *p, ID id)
{
return local_id_ref(p, id, NULL);
}
static NODE *
numparam_push(struct parser_params *p)
{
#ifndef RIPPER
struct local_vars *local = p->lvtbl;
NODE *inner = local->numparam.inner;
if (!local->numparam.outer) {
local->numparam.outer = local->numparam.current;
}
local->numparam.inner = 0;
local->numparam.current = 0;
return inner;
#else
return 0;
#endif
}
static void
numparam_pop(struct parser_params *p, NODE *prev_inner)
{
#ifndef RIPPER
struct local_vars *local = p->lvtbl;
if (prev_inner) {
/* prefer first one */
local->numparam.inner = prev_inner;
}
else if (local->numparam.current) {
/* current and inner are exclusive */
local->numparam.inner = local->numparam.current;
}
if (p->max_numparam > NO_PARAM) {
/* current and outer are exclusive */
local->numparam.current = local->numparam.outer;
local->numparam.outer = 0;
}
else {
/* no numbered parameter */
local->numparam.current = 0;
}
#endif
}
static const struct vtable *
dyna_push(struct parser_params *p)
{
p->lvtbl->args = vtable_alloc(p->lvtbl->args);
p->lvtbl->vars = vtable_alloc(p->lvtbl->vars);
if (p->lvtbl->used) {
p->lvtbl->used = vtable_alloc(p->lvtbl->used);
}
return p->lvtbl->args;
}
static void
dyna_pop_vtable(struct parser_params *p, struct vtable **vtblp)
{
struct vtable *tmp = *vtblp;
*vtblp = tmp->prev;
# if WARN_PAST_SCOPE
if (p->past_scope_enabled) {
tmp->prev = p->lvtbl->past;
p->lvtbl->past = tmp;
return;
}
# endif
vtable_free(tmp);
}
static void
dyna_pop_1(struct parser_params *p)
{
struct vtable *tmp;
if ((tmp = p->lvtbl->used) != 0) {
warn_unused_var(p, p->lvtbl);
p->lvtbl->used = p->lvtbl->used->prev;
vtable_free(tmp);
}
dyna_pop_vtable(p, &p->lvtbl->args);
dyna_pop_vtable(p, &p->lvtbl->vars);
}
static void
dyna_pop(struct parser_params *p, const struct vtable *lvargs)
{
while (p->lvtbl->args != lvargs) {
dyna_pop_1(p);
if (!p->lvtbl->args) {
struct local_vars *local = p->lvtbl->prev;
ruby_sized_xfree(p->lvtbl, sizeof(*p->lvtbl));
p->lvtbl = local;
}
}
dyna_pop_1(p);
}
static int
dyna_in_block(struct parser_params *p)
{
return !DVARS_TERMINAL_P(p->lvtbl->vars) && p->lvtbl->vars->prev != DVARS_TOPSCOPE;
}
static int
dvar_defined_ref(struct parser_params *p, ID id, ID **vidrefp)
{
struct vtable *vars, *args, *used;
int i;
args = p->lvtbl->args;
vars = p->lvtbl->vars;
used = p->lvtbl->used;
while (!DVARS_TERMINAL_P(vars)) {
if (vtable_included(args, id)) {
return 1;
}
if ((i = vtable_included(vars, id)) != 0) {
if (used && vidrefp) *vidrefp = &used->tbl[i-1];
return 1;
}
args = args->prev;
vars = vars->prev;
if (!vidrefp) used = 0;
if (used) used = used->prev;
}
if (vars == DVARS_INHERIT) {
return rb_dvar_defined(id, p->parent_iseq);
}
return 0;
}
static int
dvar_defined(struct parser_params *p, ID id)
{
return dvar_defined_ref(p, id, NULL);
}
static int
dvar_curr(struct parser_params *p, ID id)
{
return (vtable_included(p->lvtbl->args, id) ||
vtable_included(p->lvtbl->vars, id));
}
static void
reg_fragment_enc_error(struct parser_params* p, VALUE str, int c)
{
compile_error(p,
"regexp encoding option '%c' differs from source encoding '%s'",
c, rb_enc_name(rb_enc_get(str)));
}
#ifndef RIPPER
int
rb_reg_fragment_setenc(struct parser_params* p, VALUE str, int options)
{
int c = RE_OPTION_ENCODING_IDX(options);
if (c) {
int opt, idx;
rb_char_to_option_kcode(c, &opt, &idx);
if (idx != ENCODING_GET(str) &&
rb_enc_str_coderange(str) != ENC_CODERANGE_7BIT) {
goto error;
}
ENCODING_SET(str, idx);
}
else if (RE_OPTION_ENCODING_NONE(options)) {
if (!ENCODING_IS_ASCII8BIT(str) &&
rb_enc_str_coderange(str) != ENC_CODERANGE_7BIT) {
c = 'n';
goto error;
}
rb_enc_associate(str, rb_ascii8bit_encoding());
}
else if (p->enc == rb_usascii_encoding()) {
if (rb_enc_str_coderange(str) != ENC_CODERANGE_7BIT) {
/* raise in re.c */
rb_enc_associate(str, rb_usascii_encoding());
}
else {
rb_enc_associate(str, rb_ascii8bit_encoding());
}
}
return 0;
error:
return c;
}
static void
reg_fragment_setenc(struct parser_params* p, VALUE str, int options)
{
int c = rb_reg_fragment_setenc(p, str, options);
if (c) reg_fragment_enc_error(p, str, c);
}
static int
reg_fragment_check(struct parser_params* p, VALUE str, int options)
{
VALUE err;
reg_fragment_setenc(p, str, options);
err = rb_reg_check_preprocess(str);
if (err != Qnil) {
err = rb_obj_as_string(err);
compile_error(p, "%"PRIsVALUE, err);
return 0;
}
return 1;
}
typedef struct {
struct parser_params* parser;
rb_encoding *enc;
NODE *succ_block;
const YYLTYPE *loc;
} reg_named_capture_assign_t;
static int
reg_named_capture_assign_iter(const OnigUChar *name, const OnigUChar *name_end,
int back_num, int *back_refs, OnigRegex regex, void *arg0)
{
reg_named_capture_assign_t *arg = (reg_named_capture_assign_t*)arg0;
struct parser_params* p = arg->parser;
rb_encoding *enc = arg->enc;
long len = name_end - name;
const char *s = (const char *)name;
ID var;
NODE *node, *succ;
if (!len) return ST_CONTINUE;
if (len < MAX_WORD_LENGTH && rb_reserved_word(s, (int)len))
return ST_CONTINUE;
if (rb_enc_symname_type(s, len, enc, (1U<<ID_LOCAL)) != ID_LOCAL)
return ST_CONTINUE;
var = intern_cstr(s, len, enc);
node = node_assign(p, assignable(p, var, 0, arg->loc), NEW_LIT(ID2SYM(var), arg->loc), arg->loc);
succ = arg->succ_block;
if (!succ) succ = NEW_BEGIN(0, arg->loc);
succ = block_append(p, succ, node);
arg->succ_block = succ;
return ST_CONTINUE;
}
static NODE *
reg_named_capture_assign(struct parser_params* p, VALUE regexp, const YYLTYPE *loc)
{
reg_named_capture_assign_t arg;
arg.parser = p;
arg.enc = rb_enc_get(regexp);
arg.succ_block = 0;
arg.loc = loc;
onig_foreach_name(RREGEXP_PTR(regexp), reg_named_capture_assign_iter, &arg);
if (!arg.succ_block) return 0;
return arg.succ_block->nd_next;
}
static VALUE
parser_reg_compile(struct parser_params* p, VALUE str, int options)
{
reg_fragment_setenc(p, str, options);
return rb_parser_reg_compile(p, str, options);
}
VALUE
rb_parser_reg_compile(struct parser_params* p, VALUE str, int options)
{
return rb_reg_compile(str, options & RE_OPTION_MASK, p->ruby_sourcefile, p->ruby_sourceline);
}
static VALUE
reg_compile(struct parser_params* p, VALUE str, int options)
{
VALUE re;
VALUE err;
err = rb_errinfo();
re = parser_reg_compile(p, str, options);
if (NIL_P(re)) {
VALUE m = rb_attr_get(rb_errinfo(), idMesg);
rb_set_errinfo(err);
compile_error(p, "%"PRIsVALUE, m);
return Qnil;
}
return re;
}
#else
static VALUE
parser_reg_compile(struct parser_params* p, VALUE str, int options, VALUE *errmsg)
{
VALUE err = rb_errinfo();
VALUE re;
int c = rb_reg_fragment_setenc(p, str, options);
if (c) reg_fragment_enc_error(p, str, c);
re = rb_parser_reg_compile(p, str, options);
if (NIL_P(re)) {
*errmsg = rb_attr_get(rb_errinfo(), idMesg);
rb_set_errinfo(err);
}
return re;
}
#endif
#ifndef RIPPER
void
rb_parser_set_options(VALUE vparser, int print, int loop, int chomp, int split)
{
struct parser_params *p;
TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, p);
p->do_print = print;
p->do_loop = loop;
p->do_chomp = chomp;
p->do_split = split;
}
void
rb_parser_warn_location(VALUE vparser, int warn)
{
struct parser_params *p;
TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, p);
p->warn_location = warn;
}
static NODE *
parser_append_options(struct parser_params *p, NODE *node)
{
static const YYLTYPE default_location = {{1, 0}, {1, 0}};
const YYLTYPE *const LOC = &default_location;
if (p->do_print) {
NODE *print = NEW_FCALL(rb_intern("print"),
NEW_LIST(NEW_GVAR(idLASTLINE, LOC), LOC),
LOC);
node = block_append(p, node, print);
}
if (p->do_loop) {
if (p->do_split) {
NODE *args = NEW_LIST(NEW_GVAR(rb_intern("$;"), LOC), LOC);
NODE *split = NEW_GASGN(rb_intern("$F"),
NEW_CALL(NEW_GVAR(idLASTLINE, LOC),
rb_intern("split"), args, LOC),
LOC);
node = block_append(p, split, node);
}
if (p->do_chomp) {
NODE *chomp = NEW_CALL(NEW_GVAR(idLASTLINE, LOC),
rb_intern("chomp!"), 0, LOC);
node = block_append(p, chomp, node);
}
node = NEW_WHILE(NEW_VCALL(idGets, LOC), node, 1, LOC);
}
return node;
}
void
rb_init_parse(void)
{
/* just to suppress unused-function warnings */
(void)nodetype;
(void)nodeline;
}
static ID
internal_id(struct parser_params *p)
{
const ID max_id = RB_ID_SERIAL_MAX & ~0xffff;
ID id = (ID)vtable_size(p->lvtbl->args) + (ID)vtable_size(p->lvtbl->vars);
id = max_id - id;
return ID_STATIC_SYM | ID_INTERNAL | (id << ID_SCOPE_SHIFT);
}
#endif /* !RIPPER */
static void
parser_initialize(struct parser_params *p)
{
/* note: we rely on TypedData_Make_Struct to set most fields to 0 */
p->command_start = TRUE;
p->ruby_sourcefile_string = Qnil;
p->lex.lpar_beg = -1; /* make lambda_beginning_p() == FALSE at first */
p->node_id = 0;
#ifdef RIPPER
p->delayed.token = Qnil;
p->result = Qnil;
p->parsing_thread = Qnil;
#else
p->error_buffer = Qfalse;
#endif
p->debug_buffer = Qnil;
p->debug_output = rb_stdout;
p->enc = rb_utf8_encoding();
}
#ifdef RIPPER
#define parser_mark ripper_parser_mark
#define parser_free ripper_parser_free
#endif
static void
parser_mark(void *ptr)
{
struct parser_params *p = (struct parser_params*)ptr;
rb_gc_mark(p->lex.input);
rb_gc_mark(p->lex.prevline);
rb_gc_mark(p->lex.lastline);
rb_gc_mark(p->lex.nextline);
rb_gc_mark(p->ruby_sourcefile_string);
rb_gc_mark((VALUE)p->lex.strterm);
rb_gc_mark((VALUE)p->ast);
rb_gc_mark(p->case_labels);
#ifndef RIPPER
rb_gc_mark(p->debug_lines);
rb_gc_mark(p->compile_option);
rb_gc_mark(p->error_buffer);
#else
rb_gc_mark(p->delayed.token);
rb_gc_mark(p->value);
rb_gc_mark(p->result);
rb_gc_mark(p->parsing_thread);
#endif
rb_gc_mark(p->debug_buffer);
rb_gc_mark(p->debug_output);
#ifdef YYMALLOC
rb_gc_mark((VALUE)p->heap);
#endif
}
static void
parser_free(void *ptr)
{
struct parser_params *p = (struct parser_params*)ptr;
struct local_vars *local, *prev;
if (p->tokenbuf) {
ruby_sized_xfree(p->tokenbuf, p->toksiz);
}
for (local = p->lvtbl; local; local = prev) {
if (local->vars) xfree(local->vars);
prev = local->prev;
xfree(local);
}
{
token_info *ptinfo;
while ((ptinfo = p->token_info) != 0) {
p->token_info = ptinfo->next;
xfree(ptinfo);
}
}
xfree(ptr);
}
static size_t
parser_memsize(const void *ptr)
{
struct parser_params *p = (struct parser_params*)ptr;
struct local_vars *local;
size_t size = sizeof(*p);
size += p->toksiz;
for (local = p->lvtbl; local; local = local->prev) {
size += sizeof(*local);
if (local->vars) size += local->vars->capa * sizeof(ID);
}
return size;
}
static const rb_data_type_t parser_data_type = {
#ifndef RIPPER
"parser",
#else
"ripper",
#endif
{
parser_mark,
parser_free,
parser_memsize,
},
0, 0, RUBY_TYPED_FREE_IMMEDIATELY
};
#ifndef RIPPER
#undef rb_reserved_word
const struct kwtable *
rb_reserved_word(const char *str, unsigned int len)
{
return reserved_word(str, len);
}
VALUE
rb_parser_new(void)
{
struct parser_params *p;
VALUE parser = TypedData_Make_Struct(0, struct parser_params,
&parser_data_type, p);
parser_initialize(p);
return parser;
}
VALUE
rb_parser_set_context(VALUE vparser, const struct rb_iseq_struct *base, int main)
{
struct parser_params *p;
TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, p);
p->error_buffer = main ? Qfalse : Qnil;
p->parent_iseq = base;
return vparser;
}
#endif
#ifdef RIPPER
#define rb_parser_end_seen_p ripper_parser_end_seen_p
#define rb_parser_encoding ripper_parser_encoding
#define rb_parser_get_yydebug ripper_parser_get_yydebug
#define rb_parser_set_yydebug ripper_parser_set_yydebug
#define rb_parser_get_debug_output ripper_parser_get_debug_output
#define rb_parser_set_debug_output ripper_parser_set_debug_output
static VALUE ripper_parser_end_seen_p(VALUE vparser);
static VALUE ripper_parser_encoding(VALUE vparser);
static VALUE ripper_parser_get_yydebug(VALUE self);
static VALUE ripper_parser_set_yydebug(VALUE self, VALUE flag);
static VALUE ripper_parser_get_debug_output(VALUE self);
static VALUE ripper_parser_set_debug_output(VALUE self, VALUE output);
/*
* call-seq:
* ripper.error? -> Boolean
*
* Return true if parsed source has errors.
*/
static VALUE
ripper_error_p(VALUE vparser)
{
struct parser_params *p;
TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, p);
return p->error_p ? Qtrue : Qfalse;
}
#endif
/*
* call-seq:
* ripper.end_seen? -> Boolean
*
* Return true if parsed source ended by +\_\_END\_\_+.
*/
VALUE
rb_parser_end_seen_p(VALUE vparser)
{
struct parser_params *p;
TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, p);
return p->ruby__end__seen ? Qtrue : Qfalse;
}
/*
* call-seq:
* ripper.encoding -> encoding
*
* Return encoding of the source.
*/
VALUE
rb_parser_encoding(VALUE vparser)
{
struct parser_params *p;
TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, p);
return rb_enc_from_encoding(p->enc);
}
/*
* call-seq:
* ripper.yydebug -> true or false
*
* Get yydebug.
*/
VALUE
rb_parser_get_yydebug(VALUE self)
{
struct parser_params *p;
TypedData_Get_Struct(self, struct parser_params, &parser_data_type, p);
return p->debug ? Qtrue : Qfalse;
}
/*
* call-seq:
* ripper.yydebug = flag
*
* Set yydebug.
*/
VALUE
rb_parser_set_yydebug(VALUE self, VALUE flag)
{
struct parser_params *p;
TypedData_Get_Struct(self, struct parser_params, &parser_data_type, p);
p->debug = RTEST(flag);
return flag;
}
/*
* call-seq:
* ripper.debug_output -> obj
*
* Get debug output.
*/
VALUE
rb_parser_get_debug_output(VALUE self)
{
struct parser_params *p;
TypedData_Get_Struct(self, struct parser_params, &parser_data_type, p);
return p->debug_output;
}
/*
* call-seq:
* ripper.debug_output = obj
*
* Set debug output.
*/
VALUE
rb_parser_set_debug_output(VALUE self, VALUE output)
{
struct parser_params *p;
TypedData_Get_Struct(self, struct parser_params, &parser_data_type, p);
return p->debug_output = output;
}
#ifndef RIPPER
#ifdef YYMALLOC
#define HEAPCNT(n, size) ((n) * (size) / sizeof(YYSTYPE))
/* Keep the order; NEWHEAP then xmalloc and ADD2HEAP to get rid of
* potential memory leak */
#define NEWHEAP() rb_imemo_tmpbuf_parser_heap(0, p->heap, 0)
#define ADD2HEAP(new, cnt, ptr) ((p->heap = (new))->ptr = (ptr), \
(new)->cnt = (cnt), (ptr))
void *
rb_parser_malloc(struct parser_params *p, size_t size)
{
size_t cnt = HEAPCNT(1, size);
rb_imemo_tmpbuf_t *n = NEWHEAP();
void *ptr = xmalloc(size);
return ADD2HEAP(n, cnt, ptr);
}
void *
rb_parser_calloc(struct parser_params *p, size_t nelem, size_t size)
{
size_t cnt = HEAPCNT(nelem, size);
rb_imemo_tmpbuf_t *n = NEWHEAP();
void *ptr = xcalloc(nelem, size);
return ADD2HEAP(n, cnt, ptr);
}
void *
rb_parser_realloc(struct parser_params *p, void *ptr, size_t size)
{
rb_imemo_tmpbuf_t *n;
size_t cnt = HEAPCNT(1, size);
if (ptr && (n = p->heap) != NULL) {
do {
if (n->ptr == ptr) {
n->ptr = ptr = xrealloc(ptr, size);
if (n->cnt) n->cnt = cnt;
return ptr;
}
} while ((n = n->next) != NULL);
}
n = NEWHEAP();
ptr = xrealloc(ptr, size);
return ADD2HEAP(n, cnt, ptr);
}
void
rb_parser_free(struct parser_params *p, void *ptr)
{
rb_imemo_tmpbuf_t **prev = &p->heap, *n;
while ((n = *prev) != NULL) {
if (n->ptr == ptr) {
*prev = n->next;
rb_gc_force_recycle((VALUE)n);
break;
}
prev = &n->next;
}
xfree(ptr);
}
#endif
void
rb_parser_printf(struct parser_params *p, const char *fmt, ...)
{
va_list ap;
VALUE mesg = p->debug_buffer;
if (NIL_P(mesg)) p->debug_buffer = mesg = rb_str_new(0, 0);
va_start(ap, fmt);
rb_str_vcatf(mesg, fmt, ap);
va_end(ap);
if (RSTRING_END(mesg)[-1] == '\n') {
rb_io_write(p->debug_output, mesg);
p->debug_buffer = Qnil;
}
}
static void
parser_compile_error(struct parser_params *p, const char *fmt, ...)
{
va_list ap;
rb_io_flush(p->debug_output);
p->error_p = 1;
va_start(ap, fmt);
p->error_buffer =
rb_syntax_error_append(p->error_buffer,
p->ruby_sourcefile_string,
p->ruby_sourceline,
rb_long2int(p->lex.pcur - p->lex.pbeg),
p->enc, fmt, ap);
va_end(ap);
}
static size_t
count_char(const char *str, int c)
{
int n = 0;
while (str[n] == c) ++n;
return n;
}
/*
* strip enclosing double-quotes, same as the default yytnamerr except
* for that single-quotes matching back-quotes do not stop stripping.
*
* "\"`class' keyword\"" => "`class' keyword"
*/
RUBY_FUNC_EXPORTED size_t
rb_yytnamerr(struct parser_params *p, char *yyres, const char *yystr)
{
YYUSE(p);
if (*yystr == '"') {
size_t yyn = 0, bquote = 0;
const char *yyp = yystr;
while (*++yyp) {
switch (*yyp) {
case '`':
if (!bquote) {
bquote = count_char(yyp+1, '`') + 1;
if (yyres) memcpy(&yyres[yyn], yyp, bquote);
yyn += bquote;
yyp += bquote - 1;
break;
}
goto default_char;
case '\'':
if (bquote && count_char(yyp+1, '\'') + 1 == bquote) {
if (yyres) memcpy(yyres + yyn, yyp, bquote);
yyn += bquote;
yyp += bquote - 1;
bquote = 0;
break;
}
if (yyp[1] && yyp[1] != '\'' && yyp[2] == '\'') {
if (yyres) memcpy(yyres + yyn, yyp, 3);
yyn += 3;
yyp += 2;
break;
}
goto do_not_strip_quotes;
case ',':
goto do_not_strip_quotes;
case '\\':
if (*++yyp != '\\')
goto do_not_strip_quotes;
/* Fall through. */
default_char:
default:
if (yyres)
yyres[yyn] = *yyp;
yyn++;
break;
case '"':
case '\0':
if (yyres)
yyres[yyn] = '\0';
return yyn;
}
}
do_not_strip_quotes: ;
}
if (!yyres) return strlen(yystr);
return (YYSIZE_T)(yystpcpy(yyres, yystr) - yyres);
}
#endif
#ifdef RIPPER
#ifdef RIPPER_DEBUG
/* :nodoc: */
static VALUE
ripper_validate_object(VALUE self, VALUE x)
{
if (x == Qfalse) return x;
if (x == Qtrue) return x;
if (x == Qnil) return x;
if (x == Qundef)
rb_raise(rb_eArgError, "Qundef given");
if (FIXNUM_P(x)) return x;
if (SYMBOL_P(x)) return x;
switch (BUILTIN_TYPE(x)) {
case T_STRING:
case T_OBJECT:
case T_ARRAY:
case T_BIGNUM:
case T_FLOAT:
case T_COMPLEX:
case T_RATIONAL:
break;
case T_NODE:
if (nd_type((NODE *)x) != NODE_RIPPER) {
rb_raise(rb_eArgError, "NODE given: %p", (void *)x);
}
x = ((NODE *)x)->nd_rval;
break;
default:
rb_raise(rb_eArgError, "wrong type of ruby object: %p (%s)",
(void *)x, rb_obj_classname(x));
}
if (!RBASIC_CLASS(x)) {
rb_raise(rb_eArgError, "hidden ruby object: %p (%s)",
(void *)x, rb_builtin_type_name(TYPE(x)));
}
return x;
}
#endif
#define validate(x) ((x) = get_value(x))
static VALUE
ripper_dispatch0(struct parser_params *p, ID mid)
{
return rb_funcall(p->value, mid, 0);
}
static VALUE
ripper_dispatch1(struct parser_params *p, ID mid, VALUE a)
{
validate(a);
return rb_funcall(p->value, mid, 1, a);
}
static VALUE
ripper_dispatch2(struct parser_params *p, ID mid, VALUE a, VALUE b)
{
validate(a);
validate(b);
return rb_funcall(p->value, mid, 2, a, b);
}
static VALUE
ripper_dispatch3(struct parser_params *p, ID mid, VALUE a, VALUE b, VALUE c)
{
validate(a);
validate(b);
validate(c);
return rb_funcall(p->value, mid, 3, a, b, c);
}
static VALUE
ripper_dispatch4(struct parser_params *p, ID mid, VALUE a, VALUE b, VALUE c, VALUE d)
{
validate(a);
validate(b);
validate(c);
validate(d);
return rb_funcall(p->value, mid, 4, a, b, c, d);
}
static VALUE
ripper_dispatch5(struct parser_params *p, ID mid, VALUE a, VALUE b, VALUE c, VALUE d, VALUE e)
{
validate(a);
validate(b);
validate(c);
validate(d);
validate(e);
return rb_funcall(p->value, mid, 5, a, b, c, d, e);
}
static VALUE
ripper_dispatch7(struct parser_params *p, ID mid, VALUE a, VALUE b, VALUE c, VALUE d, VALUE e, VALUE f, VALUE g)
{
validate(a);
validate(b);
validate(c);
validate(d);
validate(e);
validate(f);
validate(g);
return rb_funcall(p->value, mid, 7, a, b, c, d, e, f, g);
}
static ID
ripper_get_id(VALUE v)
{
NODE *nd;
if (!RB_TYPE_P(v, T_NODE)) return 0;
nd = (NODE *)v;
if (nd_type(nd) != NODE_RIPPER) return 0;
return nd->nd_vid;
}
static VALUE
ripper_get_value(VALUE v)
{
NODE *nd;
if (v == Qundef) return Qnil;
if (!RB_TYPE_P(v, T_NODE)) return v;
nd = (NODE *)v;
if (nd_type(nd) != NODE_RIPPER) return Qnil;
return nd->nd_rval;
}
static void
ripper_error(struct parser_params *p)
{
p->error_p = TRUE;
}
static void
ripper_compile_error(struct parser_params *p, const char *fmt, ...)
{
VALUE str;
va_list args;
va_start(args, fmt);
str = rb_vsprintf(fmt, args);
va_end(args);
rb_funcall(p->value, rb_intern("compile_error"), 1, str);
ripper_error(p);
}
static VALUE
ripper_lex_get_generic(struct parser_params *p, VALUE src)
{
VALUE line = rb_funcallv_public(src, id_gets, 0, 0);
if (!NIL_P(line) && !RB_TYPE_P(line, T_STRING)) {
rb_raise(rb_eTypeError,
"gets returned %"PRIsVALUE" (expected String or nil)",
rb_obj_class(line));
}
return line;
}
static VALUE
ripper_lex_io_get(struct parser_params *p, VALUE src)
{
return rb_io_gets(src);
}
static VALUE
ripper_s_allocate(VALUE klass)
{
struct parser_params *p;
VALUE self = TypedData_Make_Struct(klass, struct parser_params,
&parser_data_type, p);
p->value = self;
return self;
}
#define ripper_initialized_p(r) ((r)->lex.input != 0)
/*
* call-seq:
* Ripper.new(src, filename="(ripper)", lineno=1) -> ripper
*
* Create a new Ripper object.
* _src_ must be a String, an IO, or an Object which has #gets method.
*
* This method does not starts parsing.
* See also Ripper#parse and Ripper.parse.
*/
static VALUE
ripper_initialize(int argc, VALUE *argv, VALUE self)
{
struct parser_params *p;
VALUE src, fname, lineno;
TypedData_Get_Struct(self, struct parser_params, &parser_data_type, p);
rb_scan_args(argc, argv, "12", &src, &fname, &lineno);
if (RB_TYPE_P(src, T_FILE)) {
p->lex.gets = ripper_lex_io_get;
}
else if (rb_respond_to(src, id_gets)) {
p->lex.gets = ripper_lex_get_generic;
}
else {
StringValue(src);
p->lex.gets = lex_get_str;
}
p->lex.input = src;
p->eofp = 0;
if (NIL_P(fname)) {
fname = STR_NEW2("(ripper)");
OBJ_FREEZE(fname);
}
else {
StringValueCStr(fname);
fname = rb_str_new_frozen(fname);
}
parser_initialize(p);
p->ruby_sourcefile_string = fname;
p->ruby_sourcefile = RSTRING_PTR(fname);
p->ruby_sourceline = NIL_P(lineno) ? 0 : NUM2INT(lineno) - 1;
return Qnil;
}
static VALUE
ripper_parse0(VALUE parser_v)
{
struct parser_params *p;
TypedData_Get_Struct(parser_v, struct parser_params, &parser_data_type, p);
parser_prepare(p);
p->ast = rb_ast_new();
ripper_yyparse((void*)p);
rb_ast_dispose(p->ast);
p->ast = 0;
return p->result;
}
static VALUE
ripper_ensure(VALUE parser_v)
{
struct parser_params *p;
TypedData_Get_Struct(parser_v, struct parser_params, &parser_data_type, p);
p->parsing_thread = Qnil;
return Qnil;
}
/*
* call-seq:
* ripper.parse
*
* Start parsing and returns the value of the root action.
*/
static VALUE
ripper_parse(VALUE self)
{
struct parser_params *p;
TypedData_Get_Struct(self, struct parser_params, &parser_data_type, p);
if (!ripper_initialized_p(p)) {
rb_raise(rb_eArgError, "method called for uninitialized object");
}
if (!NIL_P(p->parsing_thread)) {
if (p->parsing_thread == rb_thread_current())
rb_raise(rb_eArgError, "Ripper#parse is not reentrant");
else
rb_raise(rb_eArgError, "Ripper#parse is not multithread-safe");
}
p->parsing_thread = rb_thread_current();
rb_ensure(ripper_parse0, self, ripper_ensure, self);
return p->result;
}
/*
* call-seq:
* ripper.column -> Integer
*
* Return column number of current parsing line.
* This number starts from 0.
*/
static VALUE
ripper_column(VALUE self)
{
struct parser_params *p;
long col;
TypedData_Get_Struct(self, struct parser_params, &parser_data_type, p);
if (!ripper_initialized_p(p)) {
rb_raise(rb_eArgError, "method called for uninitialized object");
}
if (NIL_P(p->parsing_thread)) return Qnil;
col = p->lex.ptok - p->lex.pbeg;
return LONG2NUM(col);
}
/*
* call-seq:
* ripper.filename -> String
*
* Return current parsing filename.
*/
static VALUE
ripper_filename(VALUE self)
{
struct parser_params *p;
TypedData_Get_Struct(self, struct parser_params, &parser_data_type, p);
if (!ripper_initialized_p(p)) {
rb_raise(rb_eArgError, "method called for uninitialized object");
}
return p->ruby_sourcefile_string;
}
/*
* call-seq:
* ripper.lineno -> Integer
*
* Return line number of current parsing line.
* This number starts from 1.
*/
static VALUE
ripper_lineno(VALUE self)
{
struct parser_params *p;
TypedData_Get_Struct(self, struct parser_params, &parser_data_type, p);
if (!ripper_initialized_p(p)) {
rb_raise(rb_eArgError, "method called for uninitialized object");
}
if (NIL_P(p->parsing_thread)) return Qnil;
return INT2NUM(p->ruby_sourceline);
}
/*
* call-seq:
* ripper.state -> Integer
*
* Return scanner state of current token.
*/
static VALUE
ripper_state(VALUE self)
{
struct parser_params *p;
TypedData_Get_Struct(self, struct parser_params, &parser_data_type, p);
if (!ripper_initialized_p(p)) {
rb_raise(rb_eArgError, "method called for uninitialized object");
}
if (NIL_P(p->parsing_thread)) return Qnil;
return INT2NUM(p->lex.state);
}
/*
* call-seq:
* ripper.token -> String
*
* Return the current token string.
*/
static VALUE
ripper_token(VALUE self)
{
struct parser_params *p;
long pos, len;
TypedData_Get_Struct(self, struct parser_params, &parser_data_type, p);
if (!ripper_initialized_p(p)) {
rb_raise(rb_eArgError, "method called for uninitialized object");
}
if (NIL_P(p->parsing_thread)) return Qnil;
pos = p->lex.ptok - p->lex.pbeg;
len = p->lex.pcur - p->lex.ptok;
return rb_str_subseq(p->lex.lastline, pos, len);
}
#ifdef RIPPER_DEBUG
/* :nodoc: */
static VALUE
ripper_assert_Qundef(VALUE self, VALUE obj, VALUE msg)
{
StringValue(msg);
if (obj == Qundef) {
rb_raise(rb_eArgError, "%"PRIsVALUE, msg);
}
return Qnil;
}
/* :nodoc: */
static VALUE
ripper_value(VALUE self, VALUE obj)
{
return ULONG2NUM(obj);
}
#endif
/*
* call-seq:
* Ripper.lex_state_name(integer) -> string
*
* Returns a string representation of lex_state.
*/
static VALUE
ripper_lex_state_name(VALUE self, VALUE state)
{
return rb_parser_lex_state_name(NUM2INT(state));
}
void
Init_ripper(void)
{
ripper_init_eventids1();
ripper_init_eventids2();
id_warn = rb_intern_const("warn");
id_warning = rb_intern_const("warning");
id_gets = rb_intern_const("gets");
id_assoc = rb_intern_const("=>");
(void)yystpcpy; /* may not used in newer bison */
InitVM(ripper);
}
void
InitVM_ripper(void)
{
VALUE Ripper;
Ripper = rb_define_class("Ripper", rb_cObject);
/* version of Ripper */
rb_define_const(Ripper, "Version", rb_usascii_str_new2(RIPPER_VERSION));
rb_define_alloc_func(Ripper, ripper_s_allocate);
rb_define_method(Ripper, "initialize", ripper_initialize, -1);
rb_define_method(Ripper, "parse", ripper_parse, 0);
rb_define_method(Ripper, "column", ripper_column, 0);
rb_define_method(Ripper, "filename", ripper_filename, 0);
rb_define_method(Ripper, "lineno", ripper_lineno, 0);
rb_define_method(Ripper, "state", ripper_state, 0);
rb_define_method(Ripper, "token", ripper_token, 0);
rb_define_method(Ripper, "end_seen?", rb_parser_end_seen_p, 0);
rb_define_method(Ripper, "encoding", rb_parser_encoding, 0);
rb_define_method(Ripper, "yydebug", rb_parser_get_yydebug, 0);
rb_define_method(Ripper, "yydebug=", rb_parser_set_yydebug, 1);
rb_define_method(Ripper, "debug_output", rb_parser_get_debug_output, 0);
rb_define_method(Ripper, "debug_output=", rb_parser_set_debug_output, 1);
rb_define_method(Ripper, "error?", ripper_error_p, 0);
#ifdef RIPPER_DEBUG
rb_define_method(Ripper, "assert_Qundef", ripper_assert_Qundef, 2);
rb_define_method(Ripper, "rawVALUE", ripper_value, 1);
rb_define_method(Ripper, "validate_object", ripper_validate_object, 1);
#endif
rb_define_singleton_method(Ripper, "dedent_string", parser_dedent_string, 2);
rb_define_private_method(Ripper, "dedent_string", parser_dedent_string, 2);
rb_define_singleton_method(Ripper, "lex_state_name", ripper_lex_state_name, 1);
<% @exprs.each do |expr, desc| -%>
/* <%=desc%> */
rb_define_const(Ripper, "<%=expr%>", INT2NUM(<%=expr%>));
<% end %>
ripper_init_eventids1_table(Ripper);
ripper_init_eventids2_table(Ripper);
# if 0
/* Hack to let RDoc document SCRIPT_LINES__ */
/*
* When a Hash is assigned to +SCRIPT_LINES__+ the contents of files loaded
* after the assignment will be added as an Array of lines with the file
* name as the key.
*/
rb_define_global_const("SCRIPT_LINES__", Qnil);
#endif
}
#endif /* RIPPER */
/*
* Local variables:
* mode: c
* c-file-style: "ruby"
* End:
*/
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