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ruby/parse.y

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/**********************************************************************
parse.y -
$Author$
$Date$
created at: Fri May 28 18:02:42 JST 1993
Copyright (C) 1993-2007 Yukihiro Matsumoto
**********************************************************************/
%{
#define YYDEBUG 1
#define YYERROR_VERBOSE 1
#define YYSTACK_USE_ALLOCA 0
#include "ruby/ruby.h"
#include "ruby/intern.h"
#include "ruby/node.h"
#include "ruby/st.h"
#include "ruby/encoding.h"
#include "regenc.h"
#include <stdio.h>
#include <errno.h>
#include <ctype.h>
#define YYMALLOC(size) rb_parser_malloc(parser, size)
#define YYREALLOC(ptr, size) rb_parser_realloc(parser, ptr, size)
#define YYCALLOC(nelem, size) rb_parser_calloc(parser, nelem, size)
#define YYFREE(ptr) rb_parser_free(parser, ptr)
#define malloc YYMALLOC
#define realloc YYREALLOC
#define calloc YYCALLOC
#define free YYFREE
#define ID_SCOPE_SHIFT 3
#define ID_SCOPE_MASK 0x07
#define ID_LOCAL 0x00
#define ID_INSTANCE 0x01
#define ID_GLOBAL 0x03
#define ID_ATTRSET 0x04
#define ID_CONST 0x05
#define ID_CLASS 0x06
#define ID_JUNK 0x07
#define ID_INTERNAL ID_JUNK
#define is_notop_id(id) ((id)>tLAST_TOKEN)
#define is_local_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_LOCAL)
#define is_global_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_GLOBAL)
#define is_instance_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_INSTANCE)
#define is_attrset_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_ATTRSET)
#define is_const_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_CONST)
#define is_class_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_CLASS)
#define is_junk_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_JUNK)
#define is_asgn_or_id(id) ((is_notop_id(id)) && \
(((id)&ID_SCOPE_MASK) == ID_GLOBAL || \
((id)&ID_SCOPE_MASK) == ID_INSTANCE || \
((id)&ID_SCOPE_MASK) == ID_CLASS))
enum lex_state_e {
EXPR_BEG, /* ignore newline, +/- is a sign. */
EXPR_END, /* newline significant, +/- is a operator. */
EXPR_ENDARG, /* ditto, and unbound braces. */
EXPR_ARG, /* newline significant, +/- is a operator. */
EXPR_CMDARG, /* newline significant, +/- is a operator. */
EXPR_MID, /* newline significant, +/- is a operator. */
EXPR_FNAME, /* ignore newline, no reserved words. */
EXPR_DOT, /* right after `.' or `::', no reserved words. */
EXPR_CLASS, /* immediate after `class', no here document. */
EXPR_VALUE, /* alike EXPR_BEG but label is disallowed. */
};
# ifdef HAVE_LONG_LONG
typedef unsigned LONG_LONG stack_type;
# else
typedef unsigned long stack_type;
# endif
# define BITSTACK_PUSH(stack, n) (stack = (stack<<1)|((n)&1))
# define BITSTACK_POP(stack) (stack = stack >> 1)
# define BITSTACK_LEXPOP(stack) (stack = (stack >> 1) | (stack & 1))
# define BITSTACK_SET_P(stack) (stack&1)
#define COND_PUSH(n) BITSTACK_PUSH(cond_stack, n)
#define COND_POP() BITSTACK_POP(cond_stack)
#define COND_LEXPOP() BITSTACK_LEXPOP(cond_stack)
#define COND_P() BITSTACK_SET_P(cond_stack)
#define CMDARG_PUSH(n) BITSTACK_PUSH(cmdarg_stack, n)
#define CMDARG_POP() BITSTACK_POP(cmdarg_stack)
#define CMDARG_LEXPOP() BITSTACK_LEXPOP(cmdarg_stack)
#define CMDARG_P() BITSTACK_SET_P(cmdarg_stack)
/* must sync with real YYSTYPE */
union tmpyystype {
VALUE val;
NODE *node;
unsigned long id;
int num;
struct RVarmap *vars;
};
struct vtable {
ID *tbl;
int pos;
int capa;
struct vtable *prev;
};
struct local_vars {
struct vtable *args;
struct vtable *vars;
struct local_vars *prev;
};
#define DVARS_INHERIT ((void*)1)
#define DVARS_TOPSCOPE NULL
#define DVARS_SPECIAL_P(tbl) (!POINTER_P(tbl))
#define POINTER_P(val) ((VALUE)(val) & ~(VALUE)3)
#ifndef RIPPER
static int
vtable_size(const struct vtable *tbl)
{
if (POINTER_P(tbl)) {
return tbl->pos;
}
else {
return 0;
}
}
#define VTBL_DEBUG 0
static struct vtable *
vtable_alloc(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;
if (VTBL_DEBUG) printf("vtable_alloc: %p\n", tbl);
return tbl;
}
static void
vtable_free(struct vtable *tbl)
{
if (VTBL_DEBUG)printf("vtable_free: %p\n", tbl);
if (POINTER_P(tbl)) {
if (tbl->tbl) {
xfree(tbl->tbl);
}
if (tbl) {
xfree(tbl);
}
}
}
static void
vtable_add(struct vtable *tbl, ID id)
{
if (!POINTER_P(tbl)) {
rb_bug("vtable_add: vtable is not allocated (%p)", tbl);
}
if (VTBL_DEBUG) printf("vtable_add: %p, %s\n", tbl, rb_id2name(id));
if (tbl->pos == tbl->capa) {
tbl->capa = tbl->capa * 2;
REALLOC_N(tbl->tbl, ID, tbl->capa);
}
tbl->tbl[tbl->pos++] = id;
}
static int
vtable_included(const struct vtable * tbl, ID id)
{
int i;
if (POINTER_P(tbl)) {
for (i = 0; i < tbl->pos; i++) {
if (tbl->tbl[i] == id) {
return 1;
}
}
}
return 0;
}
#endif
/*
Structure of Lexer Buffer:
lex_pbeg tokp lex_p lex_pend
| | | |
|-----------+--------------+------------|
|<------------>|
token
*/
struct parser_params {
NODE *heap;
union tmpyystype *parser_yylval; /* YYSTYPE not defined yet */
VALUE eofp;
NODE *parser_lex_strterm;
enum lex_state_e parser_lex_state;
stack_type parser_cond_stack;
stack_type parser_cmdarg_stack;
int parser_class_nest;
int parser_paren_nest;
int parser_lpar_beg;
int parser_in_single;
int parser_in_def;
int parser_compile_for_eval;
VALUE parser_cur_mid;
int parser_in_defined;
char *parser_tokenbuf;
int parser_tokidx;
int parser_toksiz;
VALUE parser_lex_input;
VALUE parser_lex_lastline;
VALUE parser_lex_nextline;
const char *parser_lex_pbeg;
const char *parser_lex_p;
const char *parser_lex_pend;
int parser_heredoc_end;
int parser_command_start;
int parser_lex_gets_ptr;
VALUE (*parser_lex_gets)(struct parser_params*,VALUE);
struct local_vars *parser_lvtbl;
int parser_ruby__end__seen;
int line_count;
int has_shebang;
int parser_ruby_sourceline; /* current line no. */
rb_encoding *enc;
rb_encoding *utf8;
int parser_yydebug;
#ifndef RIPPER
/* Ruby core only */
char *parser_ruby_sourcefile; /* current source file */
NODE *parser_eval_tree_begin;
NODE *parser_eval_tree;
VALUE debug_lines;
int nerr;
#else
/* Ripper only */
VALUE parser_ruby_sourcefile;
const char *tokp;
VALUE delayed;
int delayed_line;
int delayed_col;
VALUE value;
VALUE result;
VALUE parsing_thread;
int toplevel_p;
#endif
};
#define UTF8_ENC() (parser->utf8 ? parser->utf8 : \
(parser->utf8 = rb_enc_find("utf-8")))
#define STR_NEW(p,n) rb_enc_str_new((p),(n),parser->enc)
#define STR_NEW0() rb_str_new(0,0)
#define STR_NEW2(p) rb_enc_str_new((p),strlen(p),parser->enc)
#define STR_NEW3(p,n,e,func) parser_str_new((p),(n),(e),(func))
#define STR_ENC(m) ((m)?parser->enc:rb_enc_from_index(0))
#define ENC_SINGLE(cr) ((cr)==ENC_CODERANGE_7BIT)
#define TOK_INTERN(mb) rb_intern3(tok(), toklen(), STR_ENC(mb))
#ifdef YYMALLOC
void *rb_parser_malloc(struct parser_params *, size_t);
void *rb_parser_realloc(struct parser_params *, void *, size_t);
void *rb_parser_calloc(struct parser_params *, size_t, size_t);
void rb_parser_free(struct parser_params *, void *);
#endif
static int parser_yyerror(struct parser_params*, const char*);
#define yyerror(msg) parser_yyerror(parser, msg)
#define YYLEX_PARAM parser
#define ruby_eval_tree (parser->parser_eval_tree)
#define ruby_eval_tree_begin (parser->parser_eval_tree_begin)
#define lex_strterm (parser->parser_lex_strterm)
#define lex_state (parser->parser_lex_state)
#define cond_stack (parser->parser_cond_stack)
#define cmdarg_stack (parser->parser_cmdarg_stack)
#define class_nest (parser->parser_class_nest)
#define paren_nest (parser->parser_paren_nest)
#define lpar_beg (parser->parser_lpar_beg)
#define in_single (parser->parser_in_single)
#define in_def (parser->parser_in_def)
#define compile_for_eval (parser->parser_compile_for_eval)
#define cur_mid (parser->parser_cur_mid)
#define in_defined (parser->parser_in_defined)
#define tokenbuf (parser->parser_tokenbuf)
#define tokidx (parser->parser_tokidx)
#define toksiz (parser->parser_toksiz)
#define lex_input (parser->parser_lex_input)
#define lex_lastline (parser->parser_lex_lastline)
#define lex_nextline (parser->parser_lex_nextline)
#define lex_pbeg (parser->parser_lex_pbeg)
#define lex_p (parser->parser_lex_p)
#define lex_pend (parser->parser_lex_pend)
#define heredoc_end (parser->parser_heredoc_end)
#define command_start (parser->parser_command_start)
#define lex_gets_ptr (parser->parser_lex_gets_ptr)
#define lex_gets (parser->parser_lex_gets)
#define lvtbl (parser->parser_lvtbl)
#define ruby__end__seen (parser->parser_ruby__end__seen)
#define ruby_sourceline (parser->parser_ruby_sourceline)
#define ruby_sourcefile (parser->parser_ruby_sourcefile)
#define yydebug (parser->parser_yydebug)
#ifdef RIPPER
#else
#define ruby_debug_lines (parser->debug_lines)
#endif
static int yylex(void*, void*);
#ifndef RIPPER
#define yyparse ruby_yyparse
static NODE* node_newnode(struct parser_params *, enum node_type, VALUE, VALUE, VALUE);
#define rb_node_newnode(type, a1, a2, a3) node_newnode(parser, type, a1, a2, a3)
static NODE *cond_gen(struct parser_params*,NODE*);
#define cond(node) cond_gen(parser, node)
static NODE *logop_gen(struct parser_params*,enum node_type,NODE*,NODE*);
#define logop(type,node1,node2) logop_gen(parser, type, node1, node2)
static NODE *newline_node(NODE*);
static void fixpos(NODE*,NODE*);
static int value_expr_gen(struct parser_params*,NODE*);
static void void_expr_gen(struct parser_params*,NODE*);
static NODE *remove_begin(NODE*);
#define value_expr(node) value_expr_gen(parser, (node) = remove_begin(node))
#define void_expr0(node) void_expr_gen(parser, (node))
#define void_expr(node) void_expr0((node) = remove_begin(node))
static void void_stmts_gen(struct parser_params*,NODE*);
#define void_stmts(node) void_stmts_gen(parser, node)
static void reduce_nodes_gen(struct parser_params*,NODE**);
#define reduce_nodes(n) reduce_nodes_gen(parser,n)
static void block_dup_check_gen(struct parser_params*,NODE*,NODE*);
#define block_dup_check(n1,n2) block_dup_check_gen(parser,n1,n2)
static NODE *block_append_gen(struct parser_params*,NODE*,NODE*);
#define block_append(h,t) block_append_gen(parser,h,t)
static NODE *list_append_gen(struct parser_params*,NODE*,NODE*);
#define list_append(l,i) list_append_gen(parser,l,i)
static NODE *list_concat_gen(struct parser_params*,NODE*,NODE*);
#define list_concat(h,t) list_concat_gen(parser,h,t)
static NODE *arg_append_gen(struct parser_params*,NODE*,NODE*);
#define arg_append(h,t) arg_append_gen(parser,h,t)
static NODE *arg_concat_gen(struct parser_params*,NODE*,NODE*);
#define arg_concat(h,t) arg_concat_gen(parser,h,t)
static NODE *literal_concat_gen(struct parser_params*,NODE*,NODE*);
#define literal_concat(h,t) literal_concat_gen(parser,h,t)
static NODE *new_evstr_gen(struct parser_params*,NODE*);
#define new_evstr(n) new_evstr_gen(parser,n)
static NODE *evstr2dstr_gen(struct parser_params*,NODE*);
#define evstr2dstr(n) evstr2dstr_gen(parser,n)
static NODE *call_bin_op_gen(struct parser_params*,NODE*,ID,NODE*);
#define call_bin_op(recv,id,arg1) call_bin_op_gen(parser, recv,id,arg1)
static NODE *call_uni_op_gen(struct parser_params*,NODE*,ID);
#define call_uni_op(recv,id) call_uni_op_gen(parser, recv,id)
static NODE *new_args_gen(struct parser_params*,NODE*,NODE*,ID,NODE*,ID);
#define new_args(f,o,r,p,b) new_args_gen(parser, f,o,r,p,b)
static void shadowing_lvar_gen(struct parser_params*,ID);
#define shadowing_lvar(name) shadowing_lvar_gen(parser, name)
static NODE *negate_lit(NODE*);
static NODE *ret_args_gen(struct parser_params*,NODE*);
#define ret_args(node) ret_args_gen(parser, node)
static NODE *arg_blk_pass(NODE*,NODE*);
static NODE *new_yield_gen(struct parser_params*,NODE*);
#define new_yield(node) new_yield_gen(parser, node)
static NODE *gettable_gen(struct parser_params*,ID);
#define gettable(id) gettable_gen(parser,id)
static NODE *assignable_gen(struct parser_params*,ID,NODE*);
#define assignable(id,node) assignable_gen(parser, id, node)
static void new_bv_gen(struct parser_params*,ID);
#define new_bv(id) new_bv_gen(parser, id)
static NODE *aryset_gen(struct parser_params*,NODE*,NODE*);
#define aryset(node1,node2) aryset_gen(parser, node1, node2)
static NODE *attrset_gen(struct parser_params*,NODE*,ID);
#define attrset(node,id) attrset_gen(parser, node, id)
static void rb_backref_error_gen(struct parser_params*,NODE*);
#define rb_backref_error(n) rb_backref_error_gen(parser,n)
static NODE *node_assign_gen(struct parser_params*,NODE*,NODE*);
#define node_assign(node1, node2) node_assign_gen(parser, node1, node2)
static NODE *match_op_gen(struct parser_params*,NODE*,NODE*);
#define match_op(node1,node2) match_op_gen(parser, node1, node2)
static void local_push_gen(struct parser_params*,int);
#define local_push(top) local_push_gen(parser,top)
static void local_pop_gen(struct parser_params*);
#define local_pop() local_pop_gen(parser)
static int local_var_gen(struct parser_params*, ID);
#define local_var(id) local_var_gen(parser, id);
static int arg_var_gen(struct parser_params*, ID);
#define arg_var(id) arg_var_gen(parser, id)
static int local_id_gen(struct parser_params*, ID);
#define local_id(id) local_id_gen(parser, id)
static ID *local_tbl_gen(struct parser_params*);
#define local_tbl() local_tbl_gen(parser)
static ID internal_id_gen(struct parser_params*);
#define internal_id() internal_id_gen(parser)
static void dyna_push_gen(struct parser_params*);
#define dyna_push() dyna_push_gen(parser)
static void dyna_pop_gen(struct parser_params*);
#define dyna_pop() dyna_pop_gen(parser)
static int dyna_in_block_gen(struct parser_params*);
#define dyna_in_block() dyna_in_block_gen(parser)
#define dyna_var(id) local_var(id)
static int dvar_defined_gen(struct parser_params*,ID);
#define dvar_defined(id) dvar_defined_gen(parser, id)
static int dvar_curr_gen(struct parser_params*,ID);
#define dvar_curr(id) dvar_curr_gen(parser, id)
extern int rb_dvar_defined(ID);
extern int rb_local_defined(ID);
extern int rb_parse_in_eval(void);
static VALUE reg_compile_gen(struct parser_params*, VALUE, int);
#define reg_compile(str,options) reg_compile_gen(parser, str, options)
static void reg_fragment_setenc_gen(struct parser_params*, VALUE, int);
#define reg_fragment_setenc(str,options) reg_fragment_setenc_gen(parser, str, options)
static void reg_fragment_check_gen(struct parser_params*, VALUE, int);
#define reg_fragment_check(str,options) reg_fragment_check_gen(parser, str, options)
#else
#define remove_begin(node) (node)
#endif /* !RIPPER */
static int lvar_defined_gen(struct parser_params*, ID);
#define lvar_defined(id) lvar_defined_gen(parser, id)
#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_MASK 0xff
#define NODE_STRTERM NODE_ZARRAY /* nothing to gc */
#define NODE_HEREDOC NODE_ARRAY /* 1, 3 to gc */
#define SIGN_EXTEND(x,n) (((1<<(n)-1)^((x)&~(~0<<(n))))-(1<<(n)-1))
#define nd_func u1.id
#if SIZEOF_SHORT == 2
#define nd_term(node) ((signed short)(node)->u2.id)
#else
#define nd_term(node) SIGN_EXTEND((node)->u2.id, CHAR_BIT*2)
#endif
#define nd_paren(node) (char)((node)->u2.id >> CHAR_BIT*2)
#define nd_nest u3.cnt
/****** Ripper *******/
#ifdef RIPPER
#define RIPPER_VERSION "0.1.0"
#include "eventids1.c"
#include "eventids2.c"
static ID ripper_id_gets;
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);
#define dispatch0(n) ripper_dispatch0(parser, TOKEN_PASTE(ripper_id_, n))
#define dispatch1(n,a) ripper_dispatch1(parser, TOKEN_PASTE(ripper_id_, n), a)
#define dispatch2(n,a,b) ripper_dispatch2(parser, TOKEN_PASTE(ripper_id_, n), a, b)
#define dispatch3(n,a,b,c) ripper_dispatch3(parser, TOKEN_PASTE(ripper_id_, n), a, b, c)
#define dispatch4(n,a,b,c,d) ripper_dispatch4(parser, TOKEN_PASTE(ripper_id_, n), a, b, c, d)
#define dispatch5(n,a,b,c,d,e) ripper_dispatch5(parser, TOKEN_PASTE(ripper_id_, n), a, b, c, d, e)
#define yyparse ripper_yyparse
static VALUE ripper_intern(const char*);
static VALUE ripper_id2sym(ID);
#define arg_new() dispatch0(args_new)
#define arg_add(l,a) dispatch2(args_add, l, a)
#define arg_prepend(l,a) dispatch2(args_prepend, l, a)
#define arg_add_star(l,a) dispatch2(args_add_star, l, a)
#define arg_add_block(l,b) dispatch2(args_add_block, l, b)
#define arg_add_optblock(l,b) ((b)==Qundef? l : dispatch2(args_add_block, l, b))
#define bare_assoc(v) dispatch1(bare_assoc_hash, v)
#define arg_add_assocs(l,b) arg_add(l, bare_assoc(b))
#define args2mrhs(a) dispatch1(mrhs_new_from_args, a)
#define mrhs_new() dispatch0(mrhs_new)
#define mrhs_add(l,a) dispatch2(mrhs_add, l, a)
#define mrhs_add_star(l,a) dispatch2(mrhs_add_star, l, a)
#define mlhs_new() dispatch0(mlhs_new)
#define mlhs_add(l,a) dispatch2(mlhs_add, l, a)
#define mlhs_add_star(l,a) dispatch2(mlhs_add_star, l, a)
#define params_new(pars, opts, rest, pars2, blk) \
dispatch5(params, pars, opts, rest, pars2, blk)
#define blockvar_new(p,v) dispatch2(block_var, p, v)
#define blockvar_add_star(l,a) dispatch2(block_var_add_star, l, a)
#define blockvar_add_block(l,a) dispatch2(block_var_add_block, l, a)
#define method_optarg(m,a) ((a)==Qundef ? m : dispatch2(method_add_arg,m,a))
#define method_arg(m,a) dispatch2(method_add_arg,m,a)
#define method_add_block(m,b) dispatch2(method_add_block, m, b)
#define escape_Qundef(x) ((x)==Qundef ? Qnil : (x))
#define FIXME 0
#endif /* RIPPER */
#ifndef RIPPER
# define ifndef_ripper(x) x
#else
# define ifndef_ripper(x)
#endif
#ifndef RIPPER
# define rb_warn0(fmt) rb_compile_warn(ruby_sourcefile, ruby_sourceline, fmt)
# define rb_warnI(fmt,a) rb_compile_warn(ruby_sourcefile, ruby_sourceline, fmt, a)
# define rb_warnS(fmt,a) rb_compile_warn(ruby_sourcefile, ruby_sourceline, fmt, a)
# define rb_warning0(fmt) rb_compile_warning(ruby_sourcefile, ruby_sourceline, fmt)
# define rb_warningS(fmt,a) rb_compile_warning(ruby_sourcefile, ruby_sourceline, fmt, a)
#else
# define rb_warn0(fmt) ripper_warn0(parser, fmt)
# define rb_warnI(fmt,a) ripper_warnI(parser, fmt, a)
# define rb_warnS(fmt,a) ripper_warnS(parser, fmt, a)
# define rb_warning0(fmt) ripper_warning0(parser, fmt)
# define rb_warningS(fmt,a) ripper_warningS(parser, fmt, a)
static void ripper_warn0(struct parser_params*, const char*);
static void ripper_warnI(struct parser_params*, const char*, int);
static void ripper_warnS(struct parser_params*, const char*, const char*);
static void ripper_warning0(struct parser_params*, const char*);
#if 0 /* unused in ripper right now */
static void ripper_warningS(struct parser_params*, const char*, const char*);
#endif
#endif
#ifdef RIPPER
static void ripper_compile_error(struct parser_params*, const char *fmt, ...);
# define rb_compile_error ripper_compile_error
# define compile_error ripper_compile_error
# define PARSER_ARG parser,
#else
# define compile_error parser->nerr++,rb_compile_error
# define PARSER_ARG ruby_sourcefile, ruby_sourceline,
#endif
/* Older versions of Yacc set YYMAXDEPTH to a very low value by default (150,
for instance). This is too low for Ruby to parse some files, such as
date/format.rb, therefore bump the value up to at least Bison's default. */
#ifdef OLD_YACC
#ifndef YYMAXDEPTH
#define YYMAXDEPTH 10000
#endif
#endif
%}
%pure_parser
%parse-param {struct parser_params *parser}
%union {
VALUE val;
NODE *node;
ID id;
int num;
struct RVarmap *vars;
}
/*%%%*/
%token
/*%
%token <val>
%*/
keyword_class
keyword_module
keyword_def
keyword_undef
keyword_begin
keyword_rescue
keyword_ensure
keyword_end
keyword_if
keyword_unless
keyword_then
keyword_elsif
keyword_else
keyword_case
keyword_when
keyword_while
keyword_until
keyword_for
keyword_break
keyword_next
keyword_redo
keyword_retry
keyword_in
keyword_do
keyword_do_cond
keyword_do_block
keyword_do_LAMBDA
keyword_return
keyword_yield
keyword_super
keyword_self
keyword_nil
keyword_true
keyword_false
keyword_and
keyword_or
keyword_not
modifier_if
modifier_unless
modifier_while
modifier_until
modifier_rescue
keyword_alias
keyword_defined
keyword_BEGIN
keyword_END
keyword__LINE__
keyword__FILE__
%token <id> tIDENTIFIER tFID tGVAR tIVAR tCONSTANT tCVAR tLABEL
%token <node> tINTEGER tFLOAT tSTRING_CONTENT tCHAR
%token <node> tNTH_REF tBACK_REF
%token <num> tREGEXP_END
%type <node> singleton strings string string1 xstring regexp
%type <node> string_contents xstring_contents string_content
%type <node> words qwords word_list qword_list word
%type <node> literal numeric dsym cpath
%type <node> bodystmt compstmt stmts stmt expr arg primary command command_call method_call
%type <node> expr_value arg_value primary_value
%type <node> if_tail opt_else case_body cases opt_rescue exc_list exc_var opt_ensure
%type <node> args call_args call_args2 opt_call_args
%type <node> open_args paren_args opt_paren_args
%type <node> command_args aref_args opt_block_arg block_arg var_ref var_lhs
%type <node> mrhs superclass block_call block_command
%type <node> f_arglist f_args f_arg f_arg_item f_optarg f_marg f_marg_list f_margs
%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> bv_decls opt_bv_decl bvar
%type <node> lambda f_larglist lambda_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 <id> fsym variable sym symbol 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 <val> program reswords then do dot_or_colon
%*/
%token tUPLUS /* unary+ */
%token tUMINUS /* unary- */
%token tPOW /* ** */
%token tCMP /* <=> */
%token tEQ /* == */
%token tEQQ /* === */
%token tNEQ /* != */
%token tGEQ /* >= */
%token tLEQ /* <= */
%token tANDOP tOROP /* && and || */
%token tMATCH tNMATCH /* =~ and !~ */
%token tDOT2 tDOT3 /* .. and ... */
%token tAREF tASET /* [] and []= */
%token tLSHFT tRSHFT /* << and >> */
%token tCOLON2 /* :: */
%token tCOLON3 /* :: at EXPR_BEG */
%token <id> tOP_ASGN /* +=, -= etc. */
%token tASSOC /* => */
%token tLPAREN /* ( */
%token tLPAREN_ARG /* ( */
%token tRPAREN /* ) */
%token tLBRACK /* [ */
%token tLBRACE /* { */
%token tLBRACE_ARG /* { */
%token tSTAR /* * */
%token tAMPER /* & */
%token tLAMBDA /* -> */
%token tSYMBEG tSTRING_BEG tXSTRING_BEG tREGEXP_BEG tWORDS_BEG tQWORDS_BEG
%token tSTRING_DBEG tSTRING_DVAR tSTRING_END tLAMBEG
/*
* precedence table
*/
%nonassoc tLOWEST
%nonassoc tLBRACE_ARG
%nonassoc modifier_if modifier_unless modifier_while modifier_until
%left keyword_or keyword_and
%right keyword_not
%nonassoc keyword_defined
%right '=' tOP_ASGN
%left modifier_rescue
%right '?' ':'
%nonassoc tDOT2 tDOT3
%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 : {
lex_state = EXPR_BEG;
/*%%%*/
local_push(compile_for_eval);
/*%
%*/
}
compstmt
{
/*%%%*/
if ($2 && !compile_for_eval) {
/* last expression should not be void */
if (nd_type($2) != NODE_BLOCK) void_expr($2);
else {
NODE *node = $2;
while (node->nd_next) {
node = node->nd_next;
}
void_expr(node->nd_head);
}
}
ruby_eval_tree = NEW_SCOPE(0, block_append(ruby_eval_tree, $2));
local_pop();
/*%
$$ = $2;
parser->result = dispatch1(program, $$);
%*/
}
;
bodystmt : compstmt
opt_rescue
opt_else
opt_ensure
{
/*%%%*/
$$ = $1;
if ($2) {
$$ = NEW_RESCUE($1, $2, $3);
}
else if ($3) {
rb_warn0("else without rescue is useless");
$$ = block_append($$, $3);
}
if ($4) {
if ($$) {
$$ = NEW_ENSURE($$, $4);
}
else {
$$ = block_append($4, NEW_NIL());
}
}
fixpos($$, $1);
/*%
$$ = dispatch4(body_stmt,
escape_Qundef($1),
escape_Qundef($2),
escape_Qundef($3),
escape_Qundef($4));
%*/
}
;
compstmt : stmts opt_terms
{
/*%%%*/
void_stmts($1);
/*%
%*/
$$ = $1;
}
;
stmts : none
{
/*%%%*/
$$ = NEW_BEGIN(0);
/*%
$$ = dispatch2(stmts_add, dispatch0(stmts_new),
dispatch0(void_stmt));
%*/
}
| stmt
{
/*%%%*/
$$ = newline_node($1);
/*%
$$ = dispatch2(stmts_add, dispatch0(stmts_new), $1);
%*/
}
| stmts terms stmt
{
/*%%%*/
$$ = block_append($1, newline_node($3));
/*%
$$ = dispatch2(stmts_add, $1, $3);
%*/
}
| error stmt
{
$$ = remove_begin($2);
}
;
stmt : keyword_alias fitem {lex_state = EXPR_FNAME;} fitem
{
/*%%%*/
$$ = NEW_ALIAS($2, $4);
/*%
$$ = dispatch2(alias, $2, $4);
%*/
}
| keyword_alias tGVAR tGVAR
{
/*%%%*/
$$ = NEW_VALIAS($2, $3);
/*%
$$ = dispatch2(var_alias, $2, $3);
%*/
}
| keyword_alias tGVAR tBACK_REF
{
/*%%%*/
char buf[3];
sprintf(buf, "$%c", (char)$3->nd_nth);
$$ = NEW_VALIAS($2, rb_intern(buf));
/*%
$$ = dispatch2(var_alias, $2, $3);
%*/
}
| keyword_alias tGVAR tNTH_REF
{
/*%%%*/
yyerror("can't make alias for the number variables");
$$ = NEW_BEGIN(0);
/*%
$$ = dispatch2(var_alias, $2, $3);
$$ = dispatch1(alias_error, $$);
%*/
}
| keyword_undef undef_list
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(undef, $2);
%*/
}
| stmt modifier_if expr_value
{
/*%%%*/
$$ = NEW_IF(cond($3), remove_begin($1), 0);
fixpos($$, $3);
/*%
$$ = dispatch2(if_mod, $3, $1);
%*/
}
| stmt modifier_unless expr_value
{
/*%%%*/
$$ = NEW_UNLESS(cond($3), remove_begin($1), 0);
fixpos($$, $3);
/*%
$$ = dispatch2(unless_mod, $3, $1);
%*/
}
| stmt modifier_while expr_value
{
/*%%%*/
if ($1 && nd_type($1) == NODE_BEGIN) {
$$ = NEW_WHILE(cond($3), $1->nd_body, 0);
}
else {
$$ = NEW_WHILE(cond($3), $1, 1);
}
/*%
$$ = dispatch2(while_mod, $3, $1);
%*/
}
| stmt modifier_until expr_value
{
/*%%%*/
if ($1 && nd_type($1) == NODE_BEGIN) {
$$ = NEW_UNTIL(cond($3), $1->nd_body, 0);
}
else {
$$ = NEW_UNTIL(cond($3), $1, 1);
}
/*%
$$ = dispatch2(until_mod, $3, $1);
%*/
}
| stmt modifier_rescue stmt
{
/*%%%*/
NODE *resq = NEW_RESBODY(0, remove_begin($3), 0);
$$ = NEW_RESCUE(remove_begin($1), resq, 0);
/*%
$$ = dispatch2(rescue_mod, $3, $1);
%*/
}
| keyword_BEGIN
{
if (in_def || in_single) {
yyerror("BEGIN in method");
}
/*%%%*/
/* local_push(0); */
/*%
%*/
}
'{' compstmt '}'
{
/*%%%*/
ruby_eval_tree_begin = block_append(ruby_eval_tree_begin,
$4);
/* NEW_PREEXE($4)); */
/* local_pop(); */
$$ = 0;
/*%
$$ = dispatch1(BEGIN, $4);
%*/
}
| keyword_END '{' compstmt '}'
{
if (in_def || in_single) {
rb_warn0("END in method; use at_exit");
}
/*%%%*/
$$ = NEW_POSTEXE(NEW_NODE(
NODE_SCOPE, 0 /* tbl */, $3 /* body */, 0 /* args */));
/*%
$$ = dispatch1(END, $3);
%*/
}
| lhs '=' command_call
{
/*%%%*/
value_expr($3);
$$ = node_assign($1, $3);
/*%
$$ = dispatch2(assign, $1, $3);
%*/
}
| mlhs '=' command_call
{
/*%%%*/
value_expr($3);
$1->nd_value = $3;
$$ = $1;
/*%
$$ = dispatch2(massign, $1, $3);
%*/
}
| var_lhs tOP_ASGN command_call
{
/*%%%*/
value_expr($3);
if ($1) {
ID vid = $1->nd_vid;
if ($2 == tOROP) {
$1->nd_value = $3;
$$ = NEW_OP_ASGN_OR(gettable(vid), $1);
if (is_asgn_or_id(vid)) {
$$->nd_aid = vid;
}
}
else if ($2 == tANDOP) {
$1->nd_value = $3;
$$ = NEW_OP_ASGN_AND(gettable(vid), $1);
}
else {
$$ = $1;
$$->nd_value = NEW_CALL(gettable(vid), $2, NEW_LIST($3));
}
}
else {
$$ = NEW_BEGIN(0);
}
/*%
$$ = dispatch3(opassign, $1, $2, $3);
%*/
}
| primary_value '[' opt_call_args rbracket tOP_ASGN command_call
{
/*%%%*/
NODE *args;
value_expr($6);
if (!$3) $3 = NEW_ZARRAY();
args = arg_concat($6, $3);
if ($5 == tOROP) {
$5 = 0;
}
else if ($5 == tANDOP) {
$5 = 1;
}
$$ = NEW_OP_ASGN1($1, $5, args);
fixpos($$, $1);
/*%
$$ = dispatch2(aref_field, $1, escape_Qundef($3));
$$ = dispatch3(opassign, $$, $5, $6);
%*/
}
| primary_value '.' tIDENTIFIER tOP_ASGN command_call
{
/*%%%*/
value_expr($5);
if ($4 == tOROP) {
$4 = 0;
}
else if ($4 == tANDOP) {
$4 = 1;
}
$$ = NEW_OP_ASGN2($1, $3, $4, $5);
fixpos($$, $1);
/*%
$$ = dispatch3(field, $1, ripper_id2sym('.'), $3);
$$ = dispatch3(opassign, $$, $4, $5);
%*/
}
| primary_value '.' tCONSTANT tOP_ASGN command_call
{
/*%%%*/
value_expr($5);
if ($4 == tOROP) {
$4 = 0;
}
else if ($4 == tANDOP) {
$4 = 1;
}
$$ = NEW_OP_ASGN2($1, $3, $4, $5);
fixpos($$, $1);
/*%
$$ = dispatch3(field, $1, ripper_id2sym('.'), $3);
$$ = dispatch3(opassign, $$, $4, $5);
%*/
}
| primary_value tCOLON2 tIDENTIFIER tOP_ASGN command_call
{
/*%%%*/
value_expr($5);
if ($4 == tOROP) {
$4 = 0;
}
else if ($4 == tANDOP) {
$4 = 1;
}
$$ = NEW_OP_ASGN2($1, $3, $4, $5);
fixpos($$, $1);
/*%
$$ = dispatch3(field, $1, ripper_intern("::"), $3);
$$ = dispatch3(opassign, $$, $4, $5);
%*/
}
| backref tOP_ASGN command_call
{
/*%%%*/
rb_backref_error($1);
$$ = NEW_BEGIN(0);
/*%
$$ = dispatch2(assign, dispatch1(var_field, $1), $3);
$$ = dispatch1(assign_error, $$);
%*/
}
| lhs '=' mrhs
{
/*%%%*/
value_expr($3);
$$ = node_assign($1, $3);
/*%
$$ = dispatch2(assign, $1, $3);
%*/
}
| mlhs '=' arg_value
{
/*%%%*/
$1->nd_value = $3;
$$ = $1;
/*%
dispatch2(massign, $1, $3);
%*/
}
| mlhs '=' mrhs
{
/*%%%*/
$1->nd_value = $3;
$$ = $1;
/*%
$$ = dispatch2(massign, $1, $3);
%*/
}
| expr
;
expr : command_call
| expr keyword_and expr
{
/*%%%*/
$$ = logop(NODE_AND, $1, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("and"), $3);
%*/
}
| expr keyword_or expr
{
/*%%%*/
$$ = logop(NODE_OR, $1, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("or"), $3);
%*/
}
| keyword_not expr
{
/*%%%*/
$$ = call_uni_op(cond($2), '!');
/*%
$$ = dispatch2(unary, ripper_intern("not"), $2);
%*/
}
| '!' command_call
{
/*%%%*/
$$ = call_uni_op(cond($2), '!');
/*%
$$ = dispatch2(unary, ripper_id2sym('!'), $2);
%*/
}
| arg
;
expr_value : expr
{
/*%%%*/
value_expr($1);
$$ = $1;
if (!$$) $$ = NEW_NIL();
/*%
$$ = $1;
%*/
}
;
command_call : command
| block_command
| keyword_return call_args
{
/*%%%*/
$$ = NEW_RETURN(ret_args($2));
/*%
$$ = dispatch1(return, $2);
%*/
}
| keyword_break call_args
{
/*%%%*/
$$ = NEW_BREAK(ret_args($2));
/*%
$$ = dispatch1(break, $2);
%*/
}
| keyword_next call_args
{
/*%%%*/
$$ = NEW_NEXT(ret_args($2));
/*%
$$ = dispatch1(next, $2);
%*/
}
;
block_command : block_call
| block_call '.' operation2 command_args
{
/*%%%*/
$$ = NEW_CALL($1, $3, $4);
/*%
$$ = dispatch3(call, $1, ripper_id2sym('.'), $3);
$$ = method_arg($$, $4);
%*/
}
| block_call tCOLON2 operation2 command_args
{
/*%%%*/
$$ = NEW_CALL($1, $3, $4);
/*%
$$ = dispatch3(call, $1, ripper_intern("::"), $3);
$$ = method_arg($$, $4);
%*/
}
;
cmd_brace_block : tLBRACE_ARG
{
/*%%%*/
dyna_push();
$<num>$ = ruby_sourceline;
/*%
%*/
}
opt_block_param
compstmt
'}'
{
/*%%%*/
$$ = NEW_ITER($3,$4);
nd_set_line($$, $<num>2);
dyna_pop();
/*%
$$ = dispatch2(brace_block, escape_Qundef($3), $4);
%*/
}
;
command : operation command_args %prec tLOWEST
{
/*%%%*/
$$ = NEW_FCALL($1, $2);
fixpos($$, $2);
/*%
$$ = dispatch2(command, $1, $2);
%*/
}
| operation command_args cmd_brace_block
{
/*%%%*/
$$ = NEW_FCALL($1, $2);
block_dup_check($2,$3);
fixpos($$, $2);
/*%
$$ = dispatch2(command, $1, $2);
$$ = method_add_block($$, $3);
%*/
}
| primary_value '.' operation2 command_args %prec tLOWEST
{
/*%%%*/
$$ = NEW_CALL($1, $3, $4);
fixpos($$, $1);
/*%
$$ = dispatch4(command_call, $1, ripper_id2sym('.'), $3, $4);
%*/
}
| primary_value '.' operation2 command_args cmd_brace_block
{
/*%%%*/
$$ = NEW_CALL($1, $3, $4);
block_dup_check($4,$5);
fixpos($$, $1);
/*%
$$ = dispatch4(command_call, $1, ripper_id2sym('.'), $3, $4);
$$ = method_add_block($$, $5);
%*/
}
| primary_value tCOLON2 operation2 command_args %prec tLOWEST
{
/*%%%*/
$$ = NEW_CALL($1, $3, $4);
fixpos($$, $1);
/*%
$$ = dispatch4(command_call, $1, ripper_intern("::"), $3, $4);
%*/
}
| primary_value tCOLON2 operation2 command_args cmd_brace_block
{
/*%%%*/
$$ = NEW_CALL($1, $3, $4);
block_dup_check($4,$5);
fixpos($$, $1);
/*%
$$ = dispatch4(command_call, $1, ripper_intern("::"), $3, $4);
$$ = method_add_block($$, $5);
%*/
}
| keyword_super command_args
{
/*%%%*/
$$ = NEW_SUPER($2);
fixpos($$, $2);
/*%
$$ = dispatch1(super, $2);
%*/
}
| keyword_yield command_args
{
/*%%%*/
$$ = new_yield($2);
fixpos($$, $2);
/*%
$$ = dispatch1(yield, $2);
%*/
}
;
mlhs : mlhs_basic
| tLPAREN mlhs_inner rparen
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(mlhs_paren, $2);
%*/
}
;
mlhs_inner : mlhs_basic
| tLPAREN mlhs_inner rparen
{
/*%%%*/
$$ = NEW_MASGN(NEW_LIST($2), 0);
/*%
$$ = dispatch1(mlhs_paren, $2);
%*/
}
;
mlhs_basic : mlhs_head
{
/*%%%*/
$$ = NEW_MASGN($1, 0);
/*%
$$ = $1;
%*/
}
| mlhs_head mlhs_item
{
/*%%%*/
$$ = NEW_MASGN(list_append($1,$2), 0);
/*%
$$ = mlhs_add($1, $2);
%*/
}
| mlhs_head tSTAR mlhs_node
{
/*%%%*/
$$ = NEW_MASGN($1, $3);
/*%
$$ = mlhs_add_star($1, $3);
%*/
}
| mlhs_head tSTAR mlhs_node ',' mlhs_post
{
/*%%%*/
$$ = NEW_MASGN($1, NEW_POSTARG($3,$5));
/*%
$$ = mlhs_add_star($1, $3);
%*/
}
| mlhs_head tSTAR
{
/*%%%*/
$$ = NEW_MASGN($1, -1);
/*%
$$ = mlhs_add_star($1, Qnil);
%*/
}
| mlhs_head tSTAR ',' mlhs_post
{
/*%%%*/
$$ = NEW_MASGN($1, NEW_POSTARG(-1, $4));
/*%
$$ = mlhs_add_star($1, Qnil);
%*/
}
| tSTAR mlhs_node
{
/*%%%*/
$$ = NEW_MASGN(0, $2);
/*%
$$ = mlhs_add_star(mlhs_new(), $2);
%*/
}
| tSTAR mlhs_node ',' mlhs_post
{
/*%%%*/
$$ = NEW_MASGN(0, NEW_POSTARG($2,$4));
/*%
$$ = mlhs_add_star(mlhs_new(), $2);
%*/
}
| tSTAR
{
/*%%%*/
$$ = NEW_MASGN(0, -1);
/*%
$$ = mlhs_add_star(mlhs_new(), Qnil);
%*/
}
| tSTAR ',' mlhs_post
{
/*%%%*/
$$ = NEW_MASGN(0, NEW_POSTARG(-1, $3));
/*%
$$ = mlhs_add_star(mlhs_new(), Qnil);
%*/
}
;
mlhs_item : mlhs_node
| tLPAREN mlhs_inner rparen
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(mlhs_paren, $2);
%*/
}
;
mlhs_head : mlhs_item ','
{
/*%%%*/
$$ = NEW_LIST($1);
/*%
$$ = mlhs_add(mlhs_new(), $1);
%*/
}
| mlhs_head mlhs_item ','
{
/*%%%*/
$$ = list_append($1, $2);
/*%
$$ = mlhs_add($1, $2);
%*/
}
;
mlhs_post : mlhs_item
{
/*%%%*/
$$ = NEW_LIST($1);
/*%
$$ = mlhs_add(mlhs_new(), $1);
%*/
}
| mlhs_post ',' mlhs_item
{
/*%%%*/
$$ = list_append($1, $3);
/*%
$$ = mlhs_add($1, $3);
%*/
}
;
mlhs_node : variable
{
/*%%%*/
$$ = assignable($1, 0);
/*%
$$ = $1;
%*/
}
| primary_value '[' opt_call_args rbracket
{
/*%%%*/
$$ = aryset($1, $3);
/*%
$$ = dispatch2(aref_field, $1, escape_Qundef($3));
%*/
}
| primary_value '.' tIDENTIFIER
{
/*%%%*/
$$ = attrset($1, $3);
/*%
$$ = dispatch3(field, $1, ripper_id2sym('.'), $3);
%*/
}
| primary_value tCOLON2 tIDENTIFIER
{
/*%%%*/
$$ = attrset($1, $3);
/*%
$$ = dispatch2(const_path_field, $1, $3);
%*/
}
| primary_value '.' tCONSTANT
{
/*%%%*/
$$ = attrset($1, $3);
/*%
$$ = dispatch3(field, $1, ripper_id2sym('.'), $3);
%*/
}
| primary_value tCOLON2 tCONSTANT
{
/*%%%*/
if (in_def || in_single)
yyerror("dynamic constant assignment");
$$ = NEW_CDECL(0, 0, NEW_COLON2($1, $3));
/*%
if (in_def || in_single)
yyerror("dynamic constant assignment");
$$ = dispatch2(const_path_field, $1, $3);
%*/
}
| tCOLON3 tCONSTANT
{
/*%%%*/
if (in_def || in_single)
yyerror("dynamic constant assignment");
$$ = NEW_CDECL(0, 0, NEW_COLON3($2));
/*%
$$ = dispatch1(top_const_field, $2);
%*/
}
| backref
{
/*%%%*/
rb_backref_error($1);
$$ = NEW_BEGIN(0);
/*%
$$ = dispatch1(var_field, $1);
$$ = dispatch1(assign_error, $$);
%*/
}
;
lhs : variable
{
/*%%%*/
if (!($$ = assignable($1, 0))) $$ = NEW_BEGIN(0);
/*%
$$ = dispatch1(var_field, $1);
%*/
}
| primary_value '[' opt_call_args rbracket
{
/*%%%*/
$$ = aryset($1, $3);
/*%
$$ = dispatch2(aref_field, $1, escape_Qundef($3));
%*/
}
| primary_value '.' tIDENTIFIER
{
/*%%%*/
$$ = attrset($1, $3);
/*%
$$ = dispatch3(field, $1, ripper_id2sym('.'), $3);
%*/
}
| primary_value tCOLON2 tIDENTIFIER
{
/*%%%*/
$$ = attrset($1, $3);
/*%
$$ = dispatch3(field, $1, ripper_intern("::"), $3);
%*/
}
| primary_value '.' tCONSTANT
{
/*%%%*/
$$ = attrset($1, $3);
/*%
$$ = dispatch3(field, $1, ripper_id2sym('.'), $3);
%*/
}
| primary_value tCOLON2 tCONSTANT
{
/*%%%*/
if (in_def || in_single)
yyerror("dynamic constant assignment");
$$ = NEW_CDECL(0, 0, NEW_COLON2($1, $3));
/*%
$$ = dispatch2(const_path_field, $1, $3);
if (in_def || in_single) {
$$ = dispatch1(assign_error, $$);
}
%*/
}
| tCOLON3 tCONSTANT
{
/*%%%*/
if (in_def || in_single)
yyerror("dynamic constant assignment");
$$ = NEW_CDECL(0, 0, NEW_COLON3($2));
/*%
$$ = dispatch1(top_const_field, $2);
if (in_def || in_single) {
$$ = dispatch1(assign_error, $$);
}
%*/
}
| backref
{
/*%%%*/
rb_backref_error($1);
$$ = NEW_BEGIN(0);
/*%
$$ = dispatch1(assign_error, $1);
%*/
}
;
cname : tIDENTIFIER
{
/*%%%*/
yyerror("class/module name must be CONSTANT");
/*%
$$ = dispatch1(class_name_error, $1);
%*/
}
| tCONSTANT
;
cpath : tCOLON3 cname
{
/*%%%*/
$$ = NEW_COLON3($2);
/*%
$$ = dispatch1(top_const_ref, $2);
%*/
}
| cname
{
/*%%%*/
$$ = NEW_COLON2(0, $$);
/*%
$$ = dispatch1(const_ref, $1);
%*/
}
| primary_value tCOLON2 cname
{
/*%%%*/
$$ = NEW_COLON2($1, $3);
/*%
$$ = dispatch2(const_path_ref, $1, $3);
%*/
}
;
fname : tIDENTIFIER
| tCONSTANT
| tFID
| op
{
/*%%%*/
lex_state = EXPR_END;
$$ = $1;
/*%
lex_state = EXPR_END;
$$ = $1;
%*/
}
| reswords
{
/*%%%*/
lex_state = EXPR_END;
$$ = $<id>1;
/*%
lex_state = EXPR_END;
$$ = $1;
%*/
}
;
fsym : fname
| symbol
;
fitem : fsym
{
/*%%%*/
$$ = NEW_LIT(ID2SYM($1));
/*%
$$ = dispatch1(symbol_literal, $1);
%*/
}
| dsym
;
undef_list : fitem
{
/*%%%*/
$$ = NEW_UNDEF($1);
/*%
$$ = rb_ary_new3(1, $1);
%*/
}
| undef_list ',' {lex_state = EXPR_FNAME;} fitem
{
/*%%%*/
$$ = block_append($1, NEW_UNDEF($4));
/*%
rb_ary_push($1, $4);
%*/
}
;
op : '|' { ifndef_ripper($$ = '|'); }
| '^' { 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($$ = tPOW); }
| '!' { ifndef_ripper($$ = '!'); }
| '~' { 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_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
{
/*%%%*/
value_expr($3);
$$ = node_assign($1, $3);
/*%
$$ = dispatch2(assign, $1, $3);
%*/
}
| lhs '=' arg modifier_rescue arg
{
/*%%%*/
$$ = node_assign($1, NEW_RESCUE($3, NEW_RESBODY(0,$5,0), 0));
/*%
$$ = dispatch2(assign, $1, dispatch2(rescue_mod,$3,$5));
%*/
}
| var_lhs tOP_ASGN arg
{
/*%%%*/
value_expr($3);
if ($1) {
ID vid = $1->nd_vid;
if ($2 == tOROP) {
$1->nd_value = $3;
$$ = NEW_OP_ASGN_OR(gettable(vid), $1);
if (is_asgn_or_id(vid)) {
$$->nd_aid = vid;
}
}
else if ($2 == tANDOP) {
$1->nd_value = $3;
$$ = NEW_OP_ASGN_AND(gettable(vid), $1);
}
else {
$$ = $1;
$$->nd_value = NEW_CALL(gettable(vid), $2, NEW_LIST($3));
}
}
else {
$$ = NEW_BEGIN(0);
}
/*%
$$ = dispatch3(opassign, $1, $2, $3);
%*/
}
| primary_value '[' opt_call_args rbracket tOP_ASGN arg
{
/*%%%*/
NODE *args;
value_expr($6);
if (!$3) $3 = NEW_ZARRAY();
args = arg_concat($6, $3);
if ($5 == tOROP) {
$5 = 0;
}
else if ($5 == tANDOP) {
$5 = 1;
}
$$ = NEW_OP_ASGN1($1, $5, args);
fixpos($$, $1);
/*%
$1 = dispatch2(aref_field, $1, escape_Qundef($3));
$$ = dispatch3(opassign, $1, $5, $6);
%*/
}
| primary_value '.' tIDENTIFIER tOP_ASGN arg
{
/*%%%*/
value_expr($5);
if ($4 == tOROP) {
$4 = 0;
}
else if ($4 == tANDOP) {
$4 = 1;
}
$$ = NEW_OP_ASGN2($1, $3, $4, $5);
fixpos($$, $1);
/*%
$1 = dispatch3(field, $1, ripper_id2sym('.'), $3);
$$ = dispatch3(opassign, $1, $4, $5);
%*/
}
| primary_value '.' tCONSTANT tOP_ASGN arg
{
/*%%%*/
value_expr($5);
if ($4 == tOROP) {
$4 = 0;
}
else if ($4 == tANDOP) {
$4 = 1;
}
$$ = NEW_OP_ASGN2($1, $3, $4, $5);
fixpos($$, $1);
/*%
$1 = dispatch3(field, $1, ripper_id2sym('.'), $3);
$$ = dispatch3(opassign, $1, $4, $5);
%*/
}
| primary_value tCOLON2 tIDENTIFIER tOP_ASGN arg
{
/*%%%*/
value_expr($5);
if ($4 == tOROP) {
$4 = 0;
}
else if ($4 == tANDOP) {
$4 = 1;
}
$$ = NEW_OP_ASGN2($1, $3, $4, $5);
fixpos($$, $1);
/*%
$1 = dispatch3(field, $1, ripper_intern("::"), $3);
$$ = dispatch3(opassign, $1, $4, $5);
%*/
}
| primary_value tCOLON2 tCONSTANT tOP_ASGN arg
{
/*%%%*/
yyerror("constant re-assignment");
$$ = NEW_BEGIN(0);
/*%
$$ = dispatch2(const_path_field, $1, $3);
$$ = dispatch3(opassign, $$, $4, $5);
$$ = dispatch1(assign_error, $$);
%*/
}
| tCOLON3 tCONSTANT tOP_ASGN arg
{
/*%%%*/
yyerror("constant re-assignment");
$$ = NEW_BEGIN(0);
/*%
$$ = dispatch1(top_const_field, $2);
$$ = dispatch3(opassign, $$, $3, $4);
$$ = dispatch1(assign_error, $$);
%*/
}
| backref tOP_ASGN arg
{
/*%%%*/
rb_backref_error($1);
$$ = NEW_BEGIN(0);
/*%
$$ = dispatch1(var_field, $1);
$$ = dispatch3(opassign, $$, $2, $3);
$$ = dispatch1(assign_error, $$);
%*/
}
| arg tDOT2 arg
{
/*%%%*/
value_expr($1);
value_expr($3);
if (nd_type($1) == NODE_LIT && FIXNUM_P($1->nd_lit) &&
nd_type($3) == NODE_LIT && FIXNUM_P($3->nd_lit)) {
$1->nd_lit = rb_range_new($1->nd_lit, $3->nd_lit, Qfalse);
$$ = $1;
}
else {
$$ = NEW_DOT2($1, $3);
}
/*%
$$ = dispatch2(dot2, $1, $3);
%*/
}
| arg tDOT3 arg
{
/*%%%*/
value_expr($1);
value_expr($3);
if (nd_type($1) == NODE_LIT && FIXNUM_P($1->nd_lit) &&
nd_type($3) == NODE_LIT && FIXNUM_P($3->nd_lit)) {
$1->nd_lit = rb_range_new($1->nd_lit, $3->nd_lit, Qtrue);
$$ = $1;
}
else {
$$ = NEW_DOT3($1, $3);
}
/*%
$$ = dispatch2(dot3, $1, $3);
%*/
}
| arg '+' arg
{
/*%%%*/
$$ = call_bin_op($1, '+', $3);
/*%
$$ = dispatch3(binary, $1, ID2SYM('+'), $3);
%*/
}
| arg '-' arg
{
/*%%%*/
$$ = call_bin_op($1, '-', $3);
/*%
$$ = dispatch3(binary, $1, ID2SYM('-'), $3);
%*/
}
| arg '*' arg
{
/*%%%*/
$$ = call_bin_op($1, '*', $3);
/*%
$$ = dispatch3(binary, $1, ID2SYM('*'), $3);
%*/
}
| arg '/' arg
{
/*%%%*/
$$ = call_bin_op($1, '/', $3);
/*%
$$ = dispatch3(binary, $1, ID2SYM('/'), $3);
%*/
}
| arg '%' arg
{
/*%%%*/
$$ = call_bin_op($1, '%', $3);
/*%
$$ = dispatch3(binary, $1, ID2SYM('%'), $3);
%*/
}
| arg tPOW arg
{
/*%%%*/
$$ = call_bin_op($1, tPOW, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("**"), $3);
%*/
}
| tUMINUS_NUM tINTEGER tPOW arg
{
/*%%%*/
$$ = NEW_CALL(call_bin_op($2, tPOW, $4), tUMINUS, 0);
/*%
$$ = dispatch3(binary, $2, ripper_intern("**"), $4);
$$ = dispatch2(unary, ripper_intern("-@"), $$);
%*/
}
| tUMINUS_NUM tFLOAT tPOW arg
{
/*%%%*/
$$ = NEW_CALL(call_bin_op($2, tPOW, $4), tUMINUS, 0);
/*%
$$ = dispatch3(binary, $2, ripper_intern("**"), $4);
$$ = dispatch2(unary, ripper_intern("-@"), $$);
%*/
}
| tUPLUS arg
{
/*%%%*/
$$ = call_uni_op($2, tUPLUS);
/*%
$$ = dispatch2(unary, ripper_intern("+@"), $2);
%*/
}
| tUMINUS arg
{
/*%%%*/
$$ = call_uni_op($2, tUMINUS);
/*%
$$ = dispatch2(unary, ripper_intern("-@"), $2);
%*/
}
| arg '|' arg
{
/*%%%*/
$$ = call_bin_op($1, '|', $3);
/*%
$$ = dispatch3(binary, $1, ID2SYM('|'), $3);
%*/
}
| arg '^' arg
{
/*%%%*/
$$ = call_bin_op($1, '^', $3);
/*%
$$ = dispatch3(binary, $1, ID2SYM('^'), $3);
%*/
}
| arg '&' arg
{
/*%%%*/
$$ = call_bin_op($1, '&', $3);
/*%
$$ = dispatch3(binary, $1, ID2SYM('&'), $3);
%*/
}
| arg tCMP arg
{
/*%%%*/
$$ = call_bin_op($1, tCMP, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("<=>"), $3);
%*/
}
| arg '>' arg
{
/*%%%*/
$$ = call_bin_op($1, '>', $3);
/*%
$$ = dispatch3(binary, $1, ID2SYM('>'), $3);
%*/
}
| arg tGEQ arg
{
/*%%%*/
$$ = call_bin_op($1, tGEQ, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern(">="), $3);
%*/
}
| arg '<' arg
{
/*%%%*/
$$ = call_bin_op($1, '<', $3);
/*%
$$ = dispatch3(binary, $1, ID2SYM('<'), $3);
%*/
}
| arg tLEQ arg
{
/*%%%*/
$$ = call_bin_op($1, tLEQ, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("<="), $3);
%*/
}
| arg tEQ arg
{
/*%%%*/
$$ = call_bin_op($1, tEQ, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("=="), $3);
%*/
}
| arg tEQQ arg
{
/*%%%*/
$$ = call_bin_op($1, tEQQ, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("==="), $3);
%*/
}
| arg tNEQ arg
{
/*%%%*/
$$ = call_bin_op($1, tNEQ, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("!="), $3);
%*/
}
| arg tMATCH arg
{
/*%%%*/
$$ = match_op($1, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("=~"), $3);
%*/
}
| arg tNMATCH arg
{
/*%%%*/
$$ = call_bin_op($1, tNMATCH, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("!~"), $3);
%*/
}
| '!' arg
{
/*%%%*/
$$ = call_uni_op(cond($2), '!');
/*%
$$ = dispatch2(unary, ID2SYM('!'), $2);
%*/
}
| '~' arg
{
/*%%%*/
$$ = call_uni_op($2, '~');
/*%
$$ = dispatch2(unary, ID2SYM('~'), $2);
%*/
}
| arg tLSHFT arg
{
/*%%%*/
$$ = call_bin_op($1, tLSHFT, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("<<"), $3);
%*/
}
| arg tRSHFT arg
{
/*%%%*/
$$ = call_bin_op($1, tRSHFT, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern(">>"), $3);
%*/
}
| arg tANDOP arg
{
/*%%%*/
$$ = logop(NODE_AND, $1, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("&&"), $3);
%*/
}
| arg tOROP arg
{
/*%%%*/
$$ = logop(NODE_OR, $1, $3);
/*%
$$ = dispatch3(binary, $1, ripper_intern("||"), $3);
%*/
}
| keyword_defined opt_nl {in_defined = 1;} arg
{
/*%%%*/
in_defined = 0;
$$ = NEW_DEFINED($4);
/*%
in_defined = 0;
$$ = dispatch1(defined, $4);
%*/
}
| arg '?' arg opt_nl ':' arg
{
/*%%%*/
value_expr($1);
$$ = NEW_IF(cond($1), $3, $6);
fixpos($$, $1);
/*%
$$ = dispatch3(ifop, $1, $3, $6);
%*/
}
| primary
{
$$ = $1;
}
;
arg_value : arg
{
/*%%%*/
value_expr($1);
$$ = $1;
if (!$$) $$ = NEW_NIL();
/*%
$$ = $1;
%*/
}
;
aref_args : none
| args trailer
{
$$ = $1;
}
| args ',' assocs trailer
{
/*%%%*/
$$ = arg_append($1, NEW_HASH($3));
/*%
$$ = arg_add_assocs($1, $3);
%*/
}
| assocs trailer
{
/*%%%*/
$$ = NEW_LIST(NEW_HASH($1));
/*%
$$ = arg_add_assocs(arg_new(), $1);
%*/
}
;
paren_args : '(' opt_call_args rparen
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(arg_paren, escape_Qundef($2));
%*/
}
;
opt_paren_args : none
| paren_args
;
opt_call_args : none
| call_args
;
call_args : command
{
/*%%%*/
$$ = NEW_LIST($1);
/*%
$$ = arg_add(arg_new(), $1);
%*/
}
| args opt_block_arg
{
/*%%%*/
$$ = arg_blk_pass($1, $2);
/*%
$$ = arg_add_optblock($1, $2);
%*/
}
| assocs opt_block_arg
{
/*%%%*/
$$ = NEW_LIST(NEW_HASH($1));
$$ = arg_blk_pass($$, $2);
/*%
$$ = arg_add_assocs(arg_new(), $1);
$$ = arg_add_optblock($$, $2);
%*/
}
| args ',' assocs opt_block_arg
{
/*%%%*/
$$ = arg_append($1, NEW_HASH($3));
$$ = arg_blk_pass($$, $4);
/*%
$$ = arg_add_optblock(arg_add_assocs($1, $3), $4);
%*/
}
| block_arg
/*%c%*/
/*%c
{
$$ = arg_add_block(arg_new(), $1);
}
%*/
;
call_args2 : arg_value ',' args opt_block_arg
{
/*%%%*/
$$ = arg_blk_pass(list_concat(NEW_LIST($1),$3), $4);
/*%
$$ = arg_add_optblock(arg_prepend($3, $1), $4);
%*/
}
| arg_value ',' block_arg
{
/*%%%*/
$$ = arg_blk_pass(NEW_LIST($1), $3);
/*%
$$ = arg_add_block(arg_add(arg_new(), $1), $3);
%*/
}
| assocs opt_block_arg
{
/*%%%*/
$$ = NEW_LIST(NEW_HASH($1));
$$ = arg_blk_pass($$, $2);
/*%
$$ = arg_add_assocs(arg_new(), $1);
$$ = arg_add_optblock($$, $2);
%*/
}
| arg_value ',' assocs opt_block_arg
{
/*%%%*/
$$ = arg_append(NEW_LIST($1), NEW_HASH($3));
$$ = arg_blk_pass($$, $4);
/*%
$$ = arg_add_assocs(arg_add(arg_new(), $1), $3);
$$ = arg_add_optblock($$, $4);
%*/
}
| arg_value ',' args ',' assocs opt_block_arg
{
/*%%%*/
$$ = arg_append(list_concat(NEW_LIST($1),$3), NEW_HASH($5));
$$ = arg_blk_pass($$, $6);
/*%
$$ = arg_add_assocs(arg_prepend($3, $1), $5);
$$ = arg_add_optblock($$, $6);
%*/
}
| block_arg
;
command_args : {
$<num>$ = cmdarg_stack;
CMDARG_PUSH(1);
}
open_args
{
/* CMDARG_POP() */
cmdarg_stack = $<num>1;
$$ = $2;
}
;
open_args : call_args
| tLPAREN_ARG {lex_state = EXPR_ENDARG;} rparen
{
/*%%%*/
rb_warning0("don't put space before argument parentheses");
$$ = 0;
/*%
$$ = dispatch1(space, dispatch1(arg_paren, arg_new()));
%*/
}
| tLPAREN_ARG call_args2 {lex_state = EXPR_ENDARG;} rparen
{
/*%%%*/
rb_warning0("don't put space before argument parentheses");
$$ = $2;
/*%
$$ = dispatch1(space, dispatch1(arg_paren, $2));
%*/
}
;
block_arg : tAMPER arg_value
{
/*%%%*/
$$ = NEW_BLOCK_PASS($2);
/*%
$$ = $2;
%*/
}
;
opt_block_arg : ',' block_arg
{
$$ = $2;
}
| none
{
$$ = 0;
}
;
args : arg_value
{
/*%%%*/
$$ = NEW_LIST($1);
/*%
$$ = arg_add(arg_new(), $1);
%*/
}
| tSTAR arg_value
{
/*%%%*/
$$ = NEW_SPLAT($2);
/*%
$$ = arg_add_star(arg_new(), $2);
%*/
}
| args ',' arg_value
{
/*%%%*/
$$ = arg_append($1, $3);
/*%
$$ = arg_add($1, $3);
%*/
}
| args ',' tSTAR arg_value
{
/*%%%*/
$$ = arg_concat($1, $4);
/*%
$$ = arg_add_star($1, $4);
%*/
}
;
mrhs : args ',' arg_value
{
/*%%%*/
$$ = arg_append($1, $3);
/*%
$$ = mrhs_add(args2mrhs($1), $3);
%*/
}
| args ',' tSTAR arg_value
{
/*%%%*/
$$ = arg_concat($1, $4);
/*%
$$ = mrhs_add_star(args2mrhs($1), $4);
%*/
}
| tSTAR arg_value
{
/*%%%*/
$$ = NEW_SPLAT($2);
/*%
$$ = mrhs_add_star(mrhs_new(), $2);
%*/
}
;
primary : literal
| strings
| xstring
| regexp
| words
| qwords
| var_ref
| backref
| tFID
{
/*%%%*/
$$ = NEW_FCALL($1, 0);
/*%
$$ = method_arg(dispatch1(fcall, $1), arg_new());
%*/
}
| keyword_begin
{
/*%%%*/
$<num>$ = ruby_sourceline;
/*%
%*/
}
bodystmt
keyword_end
{
/*%%%*/
if ($3 == NULL) {
$$ = NEW_NIL();
}
else {
if (nd_type($3) == NODE_RESCUE ||
nd_type($3) == NODE_ENSURE)
nd_set_line($3, $<num>2);
$$ = NEW_BEGIN($3);
}
nd_set_line($$, $<num>2);
/*%
$$ = dispatch1(begin, $3);
%*/
}
| tLPAREN_ARG expr {lex_state = EXPR_ENDARG;} rparen
{
rb_warning0("(...) interpreted as grouped expression");
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(paren, $2);
%*/
}
| tLPAREN compstmt ')'
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(paren, $2);
%*/
}
| primary_value tCOLON2 tCONSTANT
{
/*%%%*/
$$ = NEW_COLON2($1, $3);
/*%
$$ = dispatch2(const_path_ref, $1, $3);
%*/
}
| tCOLON3 tCONSTANT
{
/*%%%*/
$$ = NEW_COLON3($2);
/*%
$$ = dispatch1(top_const_ref, $2);
%*/
}
| tLBRACK aref_args ']'
{
/*%%%*/
if ($2 == 0) {
$$ = NEW_ZARRAY(); /* zero length array*/
}
else {
$$ = $2;
}
/*%
$$ = dispatch1(array, escape_Qundef($2));
%*/
}
| tLBRACE assoc_list '}'
{
/*%%%*/
$$ = NEW_HASH($2);
/*%
$$ = dispatch1(hash, escape_Qundef($2));
%*/
}
| keyword_return
{
/*%%%*/
$$ = NEW_RETURN(0);
/*%
$$ = dispatch0(return0);
%*/
}
| keyword_yield '(' call_args rparen
{
/*%%%*/
$$ = new_yield($3);
/*%
$$ = dispatch1(yield, dispatch1(paren, $3));
%*/
}
| keyword_yield '(' rparen
{
/*%%%*/
$$ = NEW_YIELD(0, Qfalse);
/*%
$$ = dispatch1(yield, dispatch1(paren, arg_new()));
%*/
}
| keyword_yield
{
/*%%%*/
$$ = NEW_YIELD(0, Qfalse);
/*%
$$ = dispatch0(yield0);
%*/
}
| keyword_defined opt_nl '(' {in_defined = 1;} expr rparen
{
/*%%%*/
in_defined = 0;
$$ = NEW_DEFINED($5);
/*%
in_defined = 0;
$$ = dispatch1(defined, $5);
%*/
}
| operation brace_block
{
/*%%%*/
$2->nd_iter = NEW_FCALL($1, 0);
$$ = $2;
fixpos($2->nd_iter, $2);
/*%
$$ = method_arg(dispatch1(fcall, $1), arg_new());
$$ = method_add_block($$, $2);
%*/
}
| method_call
| method_call brace_block
{
/*%%%*/
block_dup_check($1->nd_args, $2);
$2->nd_iter = $1;
$$ = $2;
fixpos($$, $1);
/*%
$$ = method_add_block($1, $2);
%*/
}
| tLAMBDA lambda
{
$$ = $2;
}
| keyword_if expr_value then
compstmt
if_tail
keyword_end
{
/*%%%*/
$$ = NEW_IF(cond($2), $4, $5);
fixpos($$, $2);
/*%
$$ = dispatch3(if, $2, $4, escape_Qundef($5));
%*/
}
| keyword_unless expr_value then
compstmt
opt_else
keyword_end
{
/*%%%*/
$$ = NEW_UNLESS(cond($2), $4, $5);
fixpos($$, $2);
/*%
$$ = dispatch3(unless, $2, $4, escape_Qundef($5));
%*/
}
| keyword_while {COND_PUSH(1);} expr_value do {COND_POP();}
compstmt
keyword_end
{
/*%%%*/
$$ = NEW_WHILE(cond($3), $6, 1);
fixpos($$, $3);
/*%
$$ = dispatch2(while, $3, $6);
%*/
}
| keyword_until {COND_PUSH(1);} expr_value do {COND_POP();}
compstmt
keyword_end
{
/*%%%*/
$$ = NEW_UNTIL(cond($3), $6, 1);
fixpos($$, $3);
/*%
$$ = dispatch2(until, $3, $6);
%*/
}
| keyword_case expr_value opt_terms
case_body
keyword_end
{
/*%%%*/
$$ = NEW_CASE($2, $4);
fixpos($$, $2);
/*%
$$ = dispatch2(case, $2, $4);
%*/
}
| keyword_case opt_terms case_body keyword_end
{
/*%%%*/
$$ = NEW_CASE(0, $3);
/*%
$$ = dispatch2(case, Qnil, $3);
%*/
}
| keyword_for for_var keyword_in
{COND_PUSH(1);}
expr_value do
{COND_POP();}
compstmt
keyword_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();
ID *tbl = ALLOC_N(ID, 2);
NODE *m = NEW_ARGS_AUX(0, 0);
NODE *args, *scope;
if (nd_type($2) == NODE_MASGN) {
/* if args.length == 1 && args[0].kind_of?(Array)
* args = args[0]
* end
*/
NODE *one = NEW_LIST(NEW_LIT(INT2FIX(1)));
NODE *zero = NEW_LIST(NEW_LIT(INT2FIX(0)));
m->nd_next = block_append(
NEW_IF(
NEW_NODE(NODE_AND,
NEW_CALL(NEW_CALL(NEW_DVAR(id), rb_intern("length"), 0),
rb_intern("=="), one),
NEW_CALL(NEW_CALL(NEW_DVAR(id), rb_intern("[]"), zero),
rb_intern("kind_of?"), NEW_LIST(NEW_LIT(rb_cArray))),
0),
NEW_DASGN_CURR(id,
NEW_CALL(NEW_DVAR(id), rb_intern("[]"), zero)),
0),
node_assign($2, NEW_DVAR(id)));
}
else {
m->nd_next = node_assign(NEW_MASGN(NEW_LIST($2), 0), NEW_DVAR(id));
}
args = new_args(m, 0, id, 0, 0);
scope = NEW_NODE(NODE_SCOPE, tbl, $8, args);
tbl[0] = 1; tbl[1] = id;
$$ = NEW_FOR(0, $5, scope);
fixpos($$, $2);
/*%
$$ = dispatch3(for, $2, $5, $8);
%*/
}
| keyword_class cpath superclass
{
if (in_def || in_single)
yyerror("class definition in method body");
/*%%%*/
local_push(0);
$<num>$ = ruby_sourceline;
/*%
%*/
}
bodystmt
keyword_end
{
/*%%%*/
$$ = NEW_CLASS($2, $5, $3);
nd_set_line($$, $<num>4);
local_pop();
/*%
$$ = dispatch3(class, $2, $3, $5);
%*/
}
| keyword_class tLSHFT expr
{
/*%%%*/
$<num>$ = in_def;
in_def = 0;
/*%
in_def = 0;
%*/
}
term
{
/*%%%*/
$<num>$ = in_single;
in_single = 0;
local_push(0);
/*%
$$ = in_single;
in_single = 0;
%*/
}
bodystmt
keyword_end
{
/*%%%*/
$$ = NEW_SCLASS($3, $7);
fixpos($$, $3);
local_pop();
in_def = $<num>4;
in_single = $<num>6;
/*%
$$ = dispatch2(sclass, $3, $7);
in_def = $<val>4;
in_single = $<val>6;
%*/
}
| keyword_module cpath
{
if (in_def || in_single)
yyerror("module definition in method body");
/*%%%*/
local_push(0);
$<num>$ = ruby_sourceline;
/*%
%*/
}
bodystmt
keyword_end
{
/*%%%*/
$$ = NEW_MODULE($2, $4);
nd_set_line($$, $<num>3);
local_pop();
/*%
$$ = dispatch2(module, $2, $4);
%*/
}
| keyword_def fname
{
$<id>$ = cur_mid;
cur_mid = $2;
in_def++;
/*%%%*/
local_push(0);
/*%
%*/
}
f_arglist
bodystmt
keyword_end
{
/*%%%*/
NODE *body = remove_begin($5);
reduce_nodes(&body);
$$ = NEW_DEFN($2, $4, body, NOEX_PRIVATE);
fixpos($$, $4);
local_pop();
in_def--;
cur_mid = $<id>3;
/*%
$$ = dispatch3(def, $2, $4, $5);
in_def--;
cur_mid = $<id>3;
%*/
}
| keyword_def singleton dot_or_colon {lex_state = EXPR_FNAME;} fname
{
in_single++;
lex_state = EXPR_END; /* force for args */
/*%%%*/
local_push(0);
/*%
%*/
}
f_arglist
bodystmt
keyword_end
{
/*%%%*/
NODE *body = remove_begin($8);
reduce_nodes(&body);
$$ = NEW_DEFS($2, $5, $7, body);
fixpos($$, $2);
local_pop();
in_single--;
/*%
$$ = dispatch5(defs, $2, $3, $5, $7, $8);
in_single--;
%*/
}
| keyword_break
{
/*%%%*/
$$ = NEW_BREAK(0);
/*%
$$ = dispatch1(break, arg_new());
%*/
}
| keyword_next
{
/*%%%*/
$$ = NEW_NEXT(0);
/*%
$$ = dispatch1(next, arg_new());
%*/
}
| keyword_redo
{
/*%%%*/
$$ = NEW_REDO();
/*%
$$ = dispatch0(redo);
%*/
}
| keyword_retry
{
/*%%%*/
$$ = NEW_RETRY();
/*%
$$ = dispatch0(retry);
%*/
}
;
primary_value : primary
{
/*%%%*/
value_expr($1);
$$ = $1;
if (!$$) $$ = NEW_NIL();
/*%
$$ = $1;
%*/
}
;
then : term
/*%c%*/
/*%c
{ $$ = Qnil; }
%*/
| keyword_then
| term keyword_then
/*%c%*/
/*%c
{ $$ = $2; }
%*/
;
do : term
/*%c%*/
/*%c
{ $$ = Qnil; }
%*/
| keyword_do_cond
;
if_tail : opt_else
| keyword_elsif expr_value then
compstmt
if_tail
{
/*%%%*/
$$ = NEW_IF(cond($2), $4, $5);
fixpos($$, $2);
/*%
$$ = dispatch3(elsif, $2, $4, escape_Qundef($5));
%*/
}
;
opt_else : none
| keyword_else compstmt
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(else, $2);
%*/
}
;
for_var : lhs
| mlhs
;
f_marg : f_norm_arg
{
/*%%%*/
$$ = assignable($1, 0);
/*%
$$ = dispatch1(mlhs_paren, $1);
%*/
}
| tLPAREN f_margs rparen
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(mlhs_paren, $2);
%*/
}
;
f_marg_list : f_marg
{
/*%%%*/
$$ = NEW_LIST($1);
/*%
$$ = mlhs_add(mlhs_new(), $1);
%*/
}
| f_marg_list ',' f_marg
{
/*%%%*/
$$ = list_append($1, $3);
/*%
$$ = mlhs_add($1, $3);
%*/
}
;
f_margs : f_marg_list
{
/*%%%*/
$$ = NEW_MASGN($1, 0);
/*%
$$ = $1;
%*/
}
| f_marg_list ',' tSTAR f_norm_arg
{
/*%%%*/
$$ = NEW_MASGN($1, assignable($4, 0));
/*%
$$ = mlhs_add_star($1, $4);
%*/
}
| f_marg_list ',' tSTAR f_norm_arg ',' f_marg_list
{
/*%%%*/
$$ = NEW_MASGN($1, NEW_POSTARG(assignable($4, 0), $6));
/*%
$$ = mlhs_add_star($1, $4);
%*/
}
| f_marg_list ',' tSTAR
{
/*%%%*/
$$ = NEW_MASGN($1, -1);
/*%
$$ = mlhs_add_star($1, Qnil);
%*/
}
| f_marg_list ',' tSTAR ',' f_marg_list
{
/*%%%*/
$$ = NEW_MASGN($1, NEW_POSTARG(-1, $5));
/*%
$$ = mlhs_add_star($1, $5);
%*/
}
| tSTAR f_norm_arg
{
/*%%%*/
$$ = NEW_MASGN(0, assignable($2, 0));
/*%
$$ = mlhs_add_star(mlhs_new(), $2);
%*/
}
| tSTAR f_norm_arg ',' f_marg_list
{
/*%%%*/
$$ = NEW_MASGN(0, NEW_POSTARG(assignable($2, 0), $4));
/*%
#if 0
TODO: Check me
#endif
$$ = mlhs_add_star($2, $4);
%*/
}
| tSTAR
{
/*%%%*/
$$ = NEW_MASGN(0, -1);
/*%
$$ = mlhs_add_star(mlhs_new(), Qnil);
%*/
}
| tSTAR ',' f_marg_list
{
/*%%%*/
$$ = NEW_MASGN(0, NEW_POSTARG(-1, $3));
/*%
$$ = mlhs_add_star(mlhs_new(), Qnil);
%*/
}
;
block_param : f_arg ',' f_rest_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args($1, 0, $3, 0, $4);
/*%
$$ = params_new($1, Qnil, $3, Qnil, escape_Qundef($4));
%*/
}
| f_arg ','
{
/*%%%*/
$$ = new_args($1, 0, 1, 0, 0);
/*%
$$ = params_new($1, Qnil, Qnil, Qnil, Qnil);
dispatch1(excessed_comma, $$);
%*/
}
| f_arg ',' f_rest_arg ',' f_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args($1, 0, $3, $5, $6);
/*%
$$ = params_new($1, Qnil, $3, $5, escape_Qundef($6));
%*/
}
| f_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args($1, 0, 0, 0, $2);
/*%
$$ = params_new($1, Qnil,Qnil, Qnil, escape_Qundef($2));
%*/
}
| f_rest_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args(0, 0, $1, 0, $2);
/*%
$$ = params_new(Qnil, Qnil, $1, Qnil, escape_Qundef($2));
%*/
}
| f_rest_arg ',' f_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args(0, 0, $1, $3, $4);
/*%
$$ = params_new(Qnil, Qnil, $1, $3, escape_Qundef($4));
%*/
}
| f_block_arg
{
/*%%%*/
$$ = new_args(0, 0, 0, 0, $1);
/*%
$$ = params_new(Qnil, Qnil, Qnil, Qnil, $1);
%*/
}
;
opt_block_param : none
| block_param_def
;
block_param_def : '|' opt_bv_decl '|'
{
/*%%%*/
$$ = 0;
/*%
$$ = blockvar_new(params_new(Qnil,Qnil,Qnil,Qnil,Qnil),
escape_Qundef($2));
%*/
}
| tOROP
{
/*%%%*/
$$ = 0;
/*%
$$ = blockvar_new(params_new(Qnil,Qnil,Qnil,Qnil,Qnil),
Qnil);
%*/
}
| '|' block_param opt_bv_decl '|'
{
/*%%%*/
$$ = $2;
/*%
$$ = blockvar_new(escape_Qundef($2), escape_Qundef($3));
%*/
}
;
opt_bv_decl : none
| ';' bv_decls
{
/*%%%*/
$$ = 0;
/*%
$$ = $2;
%*/
}
;
bv_decls : bvar
/*%c%*/
/*%c
{
$$ = rb_ary_new2($1);
}
%*/
| bv_decls ',' bvar
/*%c%*/
/*%c
{
rb_ary_push($$, $3);
}
%*/
;
bvar : tIDENTIFIER
{
/*%%%*/
new_bv($1);
/*%
$$ = $1;
%*/
}
| f_bad_arg
{
$$ = 0;
}
;
lambda : {
/*%%%*/
dyna_push();
$<num>$ = lpar_beg;
lpar_beg = ++paren_nest;
/*%
%*/
}
f_larglist
lambda_body
{
/*%%%*/
$$ = $2;
$$->nd_body = NEW_SCOPE($2->nd_head, $3);
dyna_pop();
lpar_beg = $<num>1;
/*%
$$ = dispatch2(lambda, $2, $3);
%*/
}
;
f_larglist : '(' f_args opt_bv_decl rparen
{
/*%%%*/
$$ = NEW_LAMBDA($2);
/*%
$$ = dispatch1(paren, $2);
%*/
}
| f_args opt_bv_decl
{
/*%%%*/
$$ = NEW_LAMBDA($1);
/*%
$$ = $1;
%*/
}
;
lambda_body : tLAMBEG compstmt '}'
{
$$ = $2;
}
| keyword_do_LAMBDA compstmt keyword_end
{
$$ = $2;
}
;
do_block : keyword_do_block
{
/*%%%*/
dyna_push();
$<num>$ = ruby_sourceline;
/*% %*/
}
opt_block_param
compstmt
keyword_end
{
/*%%%*/
$$ = NEW_ITER($3,$4);
nd_set_line($$, $<num>2);
dyna_pop();
/*%
$$ = dispatch2(do_block, escape_Qundef($3), $4);
%*/
}
;
block_call : command do_block
{
/*%%%*/
block_dup_check($1->nd_args, $2);
$2->nd_iter = $1;
$$ = $2;
fixpos($$, $1);
/*%
$$ = method_add_block($1, $2);
%*/
}
| block_call '.' operation2 opt_paren_args
{
/*%%%*/
$$ = NEW_CALL($1, $3, $4);
/*%
$$ = dispatch3(call, $1, ripper_id2sym('.'), $3);
$$ = method_optarg($$, $4);
%*/
}
| block_call tCOLON2 operation2 opt_paren_args
{
/*%%%*/
$$ = NEW_CALL($1, $3, $4);
/*%
$$ = dispatch3(call, $1, ripper_intern("::"), $3);
$$ = method_optarg($$, $4);
%*/
}
;
method_call : operation paren_args
{
/*%%%*/
$$ = NEW_FCALL($1, $2);
fixpos($$, $2);
/*%
$$ = method_arg(dispatch1(fcall, $1), $2);
%*/
}
| primary_value '.' operation2 opt_paren_args
{
/*%%%*/
$$ = NEW_CALL($1, $3, $4);
fixpos($$, $1);
/*%
$$ = dispatch3(call, $1, ripper_id2sym('.'), $3);
$$ = method_optarg($$, $4);
%*/
}
| primary_value tCOLON2 operation2 paren_args
{
/*%%%*/
$$ = NEW_CALL($1, $3, $4);
fixpos($$, $1);
/*%
$$ = dispatch3(call, $1, ripper_id2sym('.'), $3);
$$ = method_optarg($$, $4);
%*/
}
| primary_value tCOLON2 operation3
{
/*%%%*/
$$ = NEW_CALL($1, $3, 0);
/*%
$$ = dispatch3(call, $1, ripper_intern("::"), $3);
%*/
}
| primary_value '.' paren_args
{
/*%%%*/
$$ = NEW_CALL($1, rb_intern("call"), $3);
fixpos($$, $1);
/*%
$$ = dispatch3(call, dispatch1(paren, $1),
ripper_id2sym('.'), rb_intern("call"));
$$ = method_optarg($$, $3);
%*/
}
| primary_value tCOLON2 paren_args
{
/*%%%*/
$$ = NEW_CALL($1, rb_intern("call"), $3);
fixpos($$, $1);
/*%
$$ = dispatch3(call, dispatch1(paren, $1),
ripper_id2sym('.'), rb_intern("call"));
$$ = method_optarg($$, $3);
%*/
}
| keyword_super paren_args
{
/*%%%*/
$$ = NEW_SUPER($2);
/*%
$$ = dispatch1(super, $2);
%*/
}
| keyword_super
{
/*%%%*/
$$ = NEW_ZSUPER();
/*%
$$ = dispatch0(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($$, $1);
/*%
$$ = dispatch2(aref, $1, escape_Qundef($3));
%*/
}
;
brace_block : '{'
{
/*%%%*/
dyna_push();
$<num>$ = ruby_sourceline;
/*%
%*/
}
opt_block_param
compstmt '}'
{
/*%%%*/
$$ = NEW_ITER($3,$4);
nd_set_line($$, $<num>2);
dyna_pop();
/*%
$$ = dispatch2(brace_block, escape_Qundef($3), $4);
%*/
}
| keyword_do
{
/*%%%*/
dyna_push();
$<num>$ = ruby_sourceline;
/*%
%*/
}
opt_block_param
compstmt keyword_end
{
/*%%%*/
$$ = NEW_ITER($3,$4);
nd_set_line($$, $<num>2);
dyna_pop();
/*%
$$ = dispatch2(do_block, escape_Qundef($3), $4);
%*/
}
;
case_body : keyword_when args then
compstmt
cases
{
/*%%%*/
$$ = NEW_WHEN($2, $4, $5);
/*%
$$ = dispatch3(when, $2, $4, escape_Qundef($5));
%*/
}
;
cases : opt_else
| case_body
;
opt_rescue : keyword_rescue exc_list exc_var then
compstmt
opt_rescue
{
/*%%%*/
if ($3) {
$3 = node_assign($3, NEW_ERRINFO());
$5 = block_append($3, $5);
}
$$ = NEW_RESBODY($2, $5, $6);
fixpos($$, $2?$2:$5);
/*%
$$ = dispatch4(rescue,
escape_Qundef($2),
escape_Qundef($3),
escape_Qundef($5),
escape_Qundef($6));
%*/
}
| none
;
exc_list : arg_value
{
/*%%%*/
$$ = NEW_LIST($1);
/*%
$$ = rb_ary_new3(1, $1);
%*/
}
| mrhs
| none
;
exc_var : tASSOC lhs
{
$$ = $2;
}
| none
;
opt_ensure : keyword_ensure compstmt
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(ensure, $2);
%*/
}
| none
;
literal : numeric
| symbol
{
/*%%%*/
$$ = NEW_LIT(ID2SYM($1));
/*%
$$ = dispatch1(symbol_literal, $1);
%*/
}
| dsym
;
strings : string
{
/*%%%*/
NODE *node = $1;
if (!node) {
node = NEW_STR(STR_NEW0());
}
else {
node = evstr2dstr(node);
}
$$ = node;
/*%
$$ = $1;
%*/
}
;
string : tCHAR
| string1
| string string1
{
/*%%%*/
$$ = literal_concat($1, $2);
/*%
$$ = dispatch2(string_concat, $1, $2);
%*/
}
;
string1 : tSTRING_BEG string_contents tSTRING_END
{
/*%%%*/
$$ = $2;
/*%
$$ = dispatch1(string_literal, $2);
%*/
}
;
xstring : tXSTRING_BEG xstring_contents tSTRING_END
{
/*%%%*/
NODE *node = $2;
if (!node) {
node = NEW_XSTR(STR_NEW0());
}
else {
switch (nd_type(node)) {
case NODE_STR:
nd_set_type(node, NODE_XSTR);
break;
case NODE_DSTR:
nd_set_type(node, NODE_DXSTR);
break;
default:
node = NEW_NODE(NODE_DXSTR, STR_NEW0(), 1, NEW_LIST(node));
break;
}
}
$$ = node;
/*%
$$ = dispatch1(xstring_literal, $2);
%*/
}
;
regexp : tREGEXP_BEG xstring_contents tREGEXP_END
{
/*%%%*/
int options = $3;
NODE *node = $2;
NODE *list;
if (!node) {
node = NEW_LIT(reg_compile(STR_NEW0(), options));
}
else switch (nd_type(node)) {
case NODE_STR:
{
VALUE src = node->nd_lit;
nd_set_type(node, NODE_LIT);
node->nd_lit = reg_compile(src, options);
}
break;
default:
node = NEW_NODE(NODE_DSTR, STR_NEW0(), 1, NEW_LIST(node));
case NODE_DSTR:
if (options & RE_OPTION_ONCE) {
nd_set_type(node, NODE_DREGX_ONCE);
}
else {
nd_set_type(node, NODE_DREGX);
}
node->nd_cflag = options & RE_OPTION_MASK;
reg_fragment_check(node->nd_lit, options);
for (list = node->nd_next; list; list = list->nd_next) {
if (nd_type(list->nd_head) == NODE_STR) {
reg_fragment_check(list->nd_head->nd_lit, options);
}
}
break;
}
$$ = node;
/*%
$$ = dispatch2(regexp_literal, $2, $3);
%*/
}
;
words : tWORDS_BEG ' ' tSTRING_END
{
/*%%%*/
$$ = NEW_ZARRAY();
/*%
$$ = dispatch0(words_new);
%*/
}
| tWORDS_BEG word_list tSTRING_END
{
$$ = $2;
}
;
word_list : /* none */
{
/*%%%*/
$$ = 0;
/*%
$$ = dispatch0(words_new);
%*/
}
| word_list word ' '
{
/*%%%*/
$$ = list_append($1, evstr2dstr($2));
/*%
$$ = dispatch2(words_add, $1, $2);
%*/
}
;
word : string_content
/*%c%*/
/*%c
{
$$ = dispatch0(word_new);
$$ = dispatch2(word_add, $$, $1);
}
%*/
| word string_content
{
/*%%%*/
$$ = literal_concat($1, $2);
/*%
$$ = dispatch2(word_add, $1, $2);
%*/
}
;
qwords : tQWORDS_BEG ' ' tSTRING_END
{
/*%%%*/
$$ = NEW_ZARRAY();
/*%
$$ = dispatch0(qwords_new);
%*/
}
| tQWORDS_BEG qword_list tSTRING_END
{
$$ = $2;
}
;
qword_list : /* none */
{
/*%%%*/
$$ = 0;
/*%
$$ = dispatch0(qwords_new);
%*/
}
| qword_list tSTRING_CONTENT ' '
{
/*%%%*/
$$ = list_append($1, $2);
/*%
$$ = dispatch2(qwords_add, $1, $2);
%*/
}
;
string_contents : /* none */
{
/*%%%*/
$$ = 0;
/*%
$$ = dispatch0(string_content);
%*/
}
| string_contents string_content
{
/*%%%*/
$$ = literal_concat($1, $2);
/*%
$$ = dispatch2(string_add, $1, $2);
%*/
}
;
xstring_contents: /* none */
{
/*%%%*/
$$ = 0;
/*%
$$ = dispatch0(xstring_new);
%*/
}
| xstring_contents string_content
{
/*%%%*/
$$ = literal_concat($1, $2);
/*%
$$ = dispatch2(xstring_add, $1, $2);
%*/
}
;
string_content : tSTRING_CONTENT
| tSTRING_DVAR
{
$<node>$ = lex_strterm;
lex_strterm = 0;
lex_state = EXPR_BEG;
}
string_dvar
{
/*%%%*/
lex_strterm = $<node>2;
$$ = NEW_EVSTR($3);
/*%
lex_strterm = $<node>2;
$$ = dispatch1(string_dvar, $3);
%*/
}
| tSTRING_DBEG
{
$<node>$ = lex_strterm;
lex_strterm = 0;
lex_state = EXPR_BEG;
COND_PUSH(0);
CMDARG_PUSH(0);
}
compstmt '}'
{
lex_strterm = $<node>2;
COND_LEXPOP();
CMDARG_LEXPOP();
/*%%%*/
if ($3) $3->flags &= ~NODE_NEWLINE;
$$ = new_evstr($3);
/*%
$$ = dispatch1(string_embexpr, $3);
%*/
}
;
string_dvar : tGVAR
{
/*%%%*/
$$ = NEW_GVAR($1);
/*%
$$ = dispatch1(var_ref, $1);
%*/
}
| tIVAR
{
/*%%%*/
$$ = NEW_IVAR($1);
/*%
$$ = dispatch1(var_ref, $1);
%*/
}
| tCVAR
{
/*%%%*/
$$ = NEW_CVAR($1);
/*%
$$ = dispatch1(var_ref, $1);
%*/
}
| backref
;
symbol : tSYMBEG sym
{
/*%%%*/
lex_state = EXPR_ENDARG;
$$ = $2;
/*%
lex_state = EXPR_ENDARG;
$$ = dispatch1(symbol, $2);
%*/
}
;
sym : fname
| tIVAR
| tGVAR
| tCVAR
;
dsym : tSYMBEG xstring_contents tSTRING_END
{
/*%%%*/
lex_state = EXPR_ENDARG;
if (!($$ = $2)) {
$$ = NEW_NIL();
yyerror("empty symbol literal");
}
else {
VALUE lit;
switch (nd_type($$)) {
case NODE_DSTR:
nd_set_type($$, NODE_DSYM);
break;
case NODE_STR:
lit = $$->nd_lit;
if (RSTRING_LEN(lit) == 0) {
yyerror("empty symbol literal");
break;
}
$$->nd_lit = ID2SYM(rb_intern_str(lit));
nd_set_type($$, NODE_LIT);
break;
default:
$$ = NEW_NODE(NODE_DSYM, STR_NEW0(), 1, NEW_LIST($$));
break;
}
}
/*%
lex_state = EXPR_ENDARG;
$$ = dispatch1(dyna_symbol, $2);
%*/
}
;
numeric : tINTEGER
| tFLOAT
| tUMINUS_NUM tINTEGER %prec tLOWEST
{
/*%%%*/
$$ = negate_lit($2);
/*%
$$ = dispatch2(unary, ripper_intern("-@"), $2);
%*/
}
| tUMINUS_NUM tFLOAT %prec tLOWEST
{
/*%%%*/
$$ = negate_lit($2);
/*%
$$ = dispatch2(unary, ripper_intern("-@"), $2);
%*/
}
;
variable : tIDENTIFIER
| tIVAR
| tGVAR
| tCONSTANT
| tCVAR
| keyword_nil {ifndef_ripper($$ = keyword_nil);}
| keyword_self {ifndef_ripper($$ = keyword_self);}
| keyword_true {ifndef_ripper($$ = keyword_true);}
| keyword_false {ifndef_ripper($$ = keyword_false);}
| keyword__FILE__ {ifndef_ripper($$ = keyword__FILE__);}
| keyword__LINE__ {ifndef_ripper($$ = keyword__LINE__);}
;
var_ref : variable
{
/*%%%*/
if (!($$ = gettable($1))) $$ = NEW_BEGIN(0);
/*%
$$ = dispatch1(var_ref, $1);
%*/
}
;
var_lhs : variable
{
/*%%%*/
$$ = assignable($1, 0);
/*%
$$ = dispatch1(var_field, $1);
%*/
}
;
backref : tNTH_REF
| tBACK_REF
;
superclass : term
{
/*%%%*/
$$ = 0;
/*%
$$ = Qnil;
%*/
}
| '<'
{
lex_state = EXPR_BEG;
}
expr_value term
{
$$ = $3;
}
| error term
{
/*%%%*/
yyerrok;
$$ = 0;
/*%
yyerrok;
$$ = Qnil;
%*/
}
;
f_arglist : '(' f_args rparen
{
/*%%%*/
$$ = $2;
lex_state = EXPR_BEG;
command_start = Qtrue;
/*%
$$ = dispatch1(paren, $2);
lex_state = EXPR_BEG;
command_start = Qtrue;
%*/
}
| f_args term
{
$$ = $1;
}
;
f_args : f_arg ',' f_optarg ',' f_rest_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args($1, $3, $5, 0, $6);
/*%
$$ = params_new($1, $3, $5, Qnil, escape_Qundef($6));
%*/
}
| f_arg ',' f_optarg ',' f_rest_arg ',' f_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args($1, $3, $5, $7, $8);
/*%
$$ = params_new($1, $3, $5, $7, escape_Qundef($8));
%*/
}
| f_arg ',' f_optarg opt_f_block_arg
{
/*%%%*/
$$ = new_args($1, $3, 0, 0, $4);
/*%
$$ = params_new($1, $3, Qnil, Qnil, escape_Qundef($4));
%*/
}
| f_arg ',' f_optarg ',' f_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args($1, $3, 0, $5, $6);
/*%
$$ = params_new($1, $3, Qnil, $5, escape_Qundef($6));
%*/
}
| f_arg ',' f_rest_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args($1, 0, $3, 0, $4);
/*%
$$ = params_new($1, Qnil, $3, Qnil, escape_Qundef($4));
%*/
}
| f_arg ',' f_rest_arg ',' f_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args($1, 0, $3, $5, $6);
/*%
$$ = params_new($1, Qnil, $3, $5, escape_Qundef($6));
%*/
}
| f_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args($1, 0, 0, 0, $2);
/*%
$$ = params_new($1, Qnil, Qnil, Qnil,escape_Qundef($2));
%*/
}
| f_optarg ',' f_rest_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args(0, $1, $3, 0, $4);
/*%
$$ = params_new(Qnil, $1, $3, Qnil, escape_Qundef($4));
%*/
}
| f_optarg ',' f_rest_arg ',' f_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args(0, $1, $3, $5, $6);
/*%
$$ = params_new(Qnil, $1, $3, $5, escape_Qundef($6));
%*/
}
| f_optarg opt_f_block_arg
{
/*%%%*/
$$ = new_args(0, $1, 0, 0, $2);
/*%
$$ = params_new(Qnil, $1, Qnil, Qnil,escape_Qundef($2));
%*/
}
| f_optarg ',' f_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args(0, $1, 0, $3, $4);
/*%
$$ = params_new(Qnil, $1, Qnil, $3, escape_Qundef($4));
%*/
}
| f_rest_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args(0, 0, $1, 0, $2);
/*%
$$ = params_new(Qnil, Qnil, $1, Qnil,escape_Qundef($2));
%*/
}
| f_rest_arg ',' f_arg opt_f_block_arg
{
/*%%%*/
$$ = new_args(0, 0, $1, $3, $4);
/*%
$$ = params_new(Qnil, Qnil, $1, $3, escape_Qundef($4));
%*/
}
| f_block_arg
{
/*%%%*/
$$ = new_args(0, 0, 0, 0, $1);
/*%
$$ = params_new(Qnil, Qnil, Qnil, Qnil, $1);
%*/
}
| /* none */
{
/*%%%*/
$$ = new_args(0, 0, 0, 0, 0);
/*%
$$ = params_new(Qnil, Qnil, Qnil, Qnil, Qnil);
%*/
}
;
f_bad_arg : tCONSTANT
{
/*%%%*/
yyerror("formal argument cannot be a constant");
$$ = 0;
/*%
$$ = dispatch1(param_error, $1);
%*/
}
| tIVAR
{
/*%%%*/
yyerror("formal argument cannot be an instance variable");
$$ = 0;
/*%
$$ = dispatch1(param_error, $1);
%*/
}
| tGVAR
{
/*%%%*/
yyerror("formal argument cannot be a global variable");
$$ = 0;
/*%
$$ = dispatch1(param_error, $1);
%*/
}
| tCVAR
{
/*%%%*/
yyerror("formal argument cannot be a class variable");
$$ = 0;
/*%
$$ = dispatch1(param_error, $1);
%*/
}
;
f_norm_arg : f_bad_arg
| tIDENTIFIER
{
/*%%%*/
if (!is_local_id($1))
yyerror("formal argument must be local variable");
shadowing_lvar($1);
/*%
%*/
$$ = $1;
}
;
f_arg_item : f_norm_arg
{
/*%%%*/
arg_var($1);
$$ = NEW_ARGS_AUX($1, 1);
/*%
%*/
}
| tLPAREN f_margs rparen
{
/*%%%*/
ID tid = internal_id();
arg_var(tid);
if (dyna_in_block()) {
$2->nd_value = NEW_DVAR(tid);
}
else {
$2->nd_value = NEW_LVAR(tid);
}
$$ = NEW_ARGS_AUX(tid, 1);
$$->nd_next = $2;
/*%
$$ = dispatch1(mlhs_paren, $2);
%*/
}
;
f_arg : f_arg_item
/*%c%*/
/*%c
{
$$ = rb_ary_new3(1, $1);
}
c%*/
| f_arg ',' f_arg_item
{
/*%%%*/
$$ = $1;
$$->nd_plen++;
$$->nd_next = block_append($$->nd_next, $3->nd_next);
rb_gc_force_recycle((VALUE)$3);
/*%
$$ = rb_ary_push($1, $3);
%*/
}
;
f_opt : tIDENTIFIER '=' arg_value
{
/*%%%*/
if (!is_local_id($1))
yyerror("formal argument must be local variable");
shadowing_lvar($1);
arg_var($1);
$$ = NEW_OPT_ARG(0, assignable($1, $3));
/*%
$$ = rb_assoc_new($1, $3);
%*/
}
;
f_optarg : f_opt
{
/*%%%*/
$$ = $1;
/*%
$$ = rb_ary_new3(1, $1);
%*/
}
| f_optarg ',' f_opt
{
/*%%%*/
NODE *opts = $1;
while (opts->nd_next) {
opts = opts->nd_next;
}
opts->nd_next = $3;
$$ = $1;
/*%
$$ = rb_ary_push($1, $3);
%*/
}
;
restarg_mark : '*'
| tSTAR
;
f_rest_arg : restarg_mark tIDENTIFIER
{
/*%%%*/
if (!is_local_id($2))
yyerror("rest argument must be local variable");
shadowing_lvar($2);
arg_var($2);
$$ = $2;
/*%
$$ = dispatch1(rest_param, $2);
%*/
}
| restarg_mark
{
/*%%%*/
$$ = internal_id();
arg_var($$);
/*%
$$ = dispatch1(rest_param, Qnil);
%*/
}
;
blkarg_mark : '&'
| tAMPER
;
f_block_arg : blkarg_mark tIDENTIFIER
{
/*%%%*/
if (!is_local_id($2))
yyerror("block argument must be local variable");
else if (!dyna_in_block() && local_id($2))
yyerror("duplicated block argument name");
shadowing_lvar($2);
arg_var($2);
$$ = $2;
/*%
$$ = dispatch1(blockarg, $2);
%*/
}
;
opt_f_block_arg : ',' f_block_arg
{
$$ = $2;
}
| none
{
/*%%%*/
$$ = 0;
/*%
$$ = Qundef;
%*/
}
;
singleton : var_ref
{
/*%%%*/
value_expr($1);
$$ = $1;
if (!$$) $$ = NEW_NIL();
/*%
$$ = $1;
%*/
}
| '(' {lex_state = EXPR_BEG;} expr rparen
{
/*%%%*/
if ($3 == 0) {
yyerror("can't define singleton method for ().");
}
else {
switch (nd_type($3)) {
case NODE_STR:
case NODE_DSTR:
case NODE_XSTR:
case NODE_DXSTR:
case NODE_DREGX:
case NODE_LIT:
case NODE_ARRAY:
case NODE_ZARRAY:
yyerror("can't define singleton method for literals");
default:
value_expr($3);
break;
}
}
$$ = $3;
/*%
$$ = dispatch1(paren, $3);
%*/
}
;
assoc_list : none
| assocs trailer
{
/*%%%*/
$$ = $1;
/*%
$$ = dispatch1(assoclist_from_args, $1);
%*/
}
;
assocs : assoc
/*%c%*/
/*%c
{
$$ = rb_ary_new3(1, $1);
}
%*/
| assocs ',' assoc
{
/*%%%*/
$$ = list_concat($1, $3);
/*%
$$ = rb_ary_push($1, $3);
%*/
}
;
assoc : arg_value tASSOC arg_value
{
/*%%%*/
$$ = list_append(NEW_LIST($1), $3);
/*%
$$ = dispatch2(assoc_new, $1, $3);
%*/
}
| tLABEL arg_value
{
/*%%%*/
$$ = list_append(NEW_LIST(NEW_LIT(ID2SYM($1))), $2);
/*%
$$ = dispatch2(assoc_new, $1, $2);
%*/
}
;
operation : tIDENTIFIER
| tCONSTANT
| tFID
;
operation2 : tIDENTIFIER
| tCONSTANT
| tFID
| op
;
operation3 : tIDENTIFIER
| tFID
| op
;
dot_or_colon : '.'
/*%c%*/
/*%c
{ $$ = $<val>1; }
%*/
| tCOLON2
/*%c%*/
/*%c
{ $$ = $<val>1; }
%*/
;
opt_terms : /* none */
| terms
;
opt_nl : /* none */
| '\n'
;
rparen : opt_nl ')'
;
rbracket : opt_nl ']'
;
trailer : /* none */
| '\n'
| ','
;
term : ';' {yyerrok;}
| '\n'
;
terms : term
| terms ';' {yyerrok;}
;
none : /* none */
{
/*%%%*/
$$ = 0;
/*%
$$ = Qundef;
%*/
}
;
%%
# undef parser
# undef yylex
# undef yylval
# define yylval (*((YYSTYPE*)(parser->parser_yylval)))
static int parser_regx_options(struct parser_params*);
static int parser_tokadd_string(struct parser_params*,int,int,int,long*,rb_encoding**);
static void parser_tokaddmbc(struct parser_params *parser, int c, rb_encoding *enc);
static int parser_parse_string(struct parser_params*,NODE*);
static int parser_here_document(struct parser_params*,NODE*);
# define nextc() parser_nextc(parser)
# define pushback(c) parser_pushback(parser, c)
# define newtok() parser_newtok(parser)
# define tokspace(n) parser_tokspace(parser, n)
# define tokadd(c) parser_tokadd(parser, c)
# define tok_hex(numlen) parser_tok_hex(parser, numlen)
# define read_escape(flags,e) parser_read_escape(parser, flags, e)
# define tokadd_escape(t,e) parser_tokadd_escape(parser, t, e)
# define regx_options() parser_regx_options(parser)
# define tokadd_string(f,t,p,n,e) parser_tokadd_string(parser,f,t,p,n,e)
# define parse_string(n) parser_parse_string(parser,n)
# define tokaddmbc(c, enc) parser_tokaddmbc(parser, c, enc)
# define here_document(n) parser_here_document(parser,n)
# define heredoc_identifier() parser_heredoc_identifier(parser)
# define heredoc_restore(n) parser_heredoc_restore(parser,n)
# define whole_match_p(e,l,i) parser_whole_match_p(parser,e,l,i)
#ifdef RIPPER
/* FIXME */
# define local_id(x) 1
# define dyna_in_block() 1
#endif /* RIPPER */
#ifndef RIPPER
# define set_yylval_str(x) yylval.node = NEW_STR(x)
# define set_yylval_num(x) yylval.num = x
# define set_yylval_id(x) yylval.id = x
# define set_yylval_literal(x) yylval.node = NEW_LIT(x)
# define set_yylval_node(x) yylval.node = x
# define yylval_id() yylval.id
#else
# define set_yylval_str(x) (void)(x)
# define set_yylval_num(x) (void)(x)
# define set_yylval_id(x) (void)(x)
# define set_yylval_literal(x) (void)(x)
# define set_yylval_node(x) (void)(x)
# define yylval_id() SYM2ID(yylval.val)
#endif
#ifdef RIPPER
#define ripper_flush(p) (p->tokp = p->parser_lex_p)
static void
ripper_dispatch_scan_event(struct parser_params *parser, int t)
{
VALUE str;
if (lex_p < parser->tokp) rb_raise(rb_eRuntimeError, "lex_p < tokp");
if (lex_p == parser->tokp) return;
str = STR_NEW(parser->tokp, lex_p - parser->tokp);
yylval.val = ripper_dispatch1(parser, ripper_token2eventid(t), str);
ripper_flush(parser);
}
static void
ripper_dispatch_delayed_token(struct parser_params *parser, int t)
{
int saved_line = ruby_sourceline;
const char *saved_tokp = parser->tokp;
ruby_sourceline = parser->delayed_line;
parser->tokp = lex_pbeg + parser->delayed_col;
yylval.val = ripper_dispatch1(parser, ripper_token2eventid(t), parser->delayed);
parser->delayed = Qnil;
ruby_sourceline = saved_line;
parser->tokp = saved_tokp;
}
#endif /* RIPPER */
#include "ruby/regex.h"
#include "ruby/util.h"
/* We remove any previous definition of `SIGN_EXTEND_CHAR',
since ours (we hope) works properly with all combinations of
machines, compilers, `char' and `unsigned char' argument types.
(Per Bothner suggested the basic approach.) */
#undef SIGN_EXTEND_CHAR
#if __STDC__
# define SIGN_EXTEND_CHAR(c) ((signed char)(c))
#else /* not __STDC__ */
/* As in Harbison and Steele. */
# define SIGN_EXTEND_CHAR(c) ((((unsigned char)(c)) ^ 128) - 128)
#endif
#define parser_mbclen() mbclen((lex_p-1),lex_pend,parser->enc)
#define parser_precise_mbclen() rb_enc_precise_mbclen((lex_p-1),lex_pend,parser->enc)
#define is_identchar(p,e,enc) (rb_enc_isalnum(*p,enc) || (*p) == '_' || !ISASCII(*p))
#define parser_is_identchar() (!parser->eofp && is_identchar((lex_p-1),lex_pend,parser->enc))
#define parser_isascii() ISASCII(*(lex_p-1))
static int
parser_yyerror(struct parser_params *parser, const char *msg)
{
#ifndef RIPPER
const int max_line_margin = 30;
const char *p, *pe;
char *buf;
int len, i;
compile_error(PARSER_ARG "%s", msg);
p = lex_p;
while (lex_pbeg <= p) {
if (*p == '\n') break;
p--;
}
p++;
pe = lex_p;
while (pe < lex_pend) {
if (*pe == '\n') break;
pe++;
}
len = pe - p;
if (len > 4) {
char *p2;
const char *pre = "", *post = "";
if (len > max_line_margin * 2 + 10) {
if (lex_p - p > max_line_margin) {
p = rb_enc_prev_char(p, lex_p - max_line_margin, rb_enc_get(lex_lastline));
pre = "...";
}
if (pe - lex_p > max_line_margin) {
pe = rb_enc_prev_char(lex_p, lex_p + max_line_margin, rb_enc_get(lex_lastline));
post = "...";
}
len = pe - p;
}
buf = ALLOCA_N(char, len+2);
MEMCPY(buf, p, char, len);
buf[len] = '\0';
rb_compile_error_append("%s%s%s", pre, buf, post);
i = lex_p - p;
p2 = buf; pe = buf + len;
while (p2 < pe) {
if (*p2 != '\t') *p2 = ' ';
p2++;
}
buf[i] = '^';
buf[i+1] = '\0';
rb_compile_error_append("%s%s", pre, buf);
}
#else
dispatch1(parse_error, STR_NEW2(msg));
#endif /* !RIPPER */
return 0;
}
static void parser_prepare(struct parser_params *parser);
#ifndef RIPPER
VALUE ruby_suppress_tracing(VALUE (*func)(VALUE, int), VALUE arg, int always);
static VALUE
debug_lines(const char *f)
{
if (rb_const_defined_at(rb_cObject, rb_intern("SCRIPT_LINES__"))) {
VALUE hash = rb_const_get_at(rb_cObject, rb_intern("SCRIPT_LINES__"));
if (TYPE(hash) == T_HASH) {
VALUE fname = rb_str_new2(f);
VALUE lines = rb_hash_lookup(hash, fname);
if (NIL_P(lines)) {
lines = rb_ary_new();
rb_hash_aset(hash, fname, lines);
}
return lines;
}
}
return 0;
}
static VALUE
yycompile0(VALUE arg, int tracing)
{
int n;
NODE *tree;
struct parser_params *parser = (struct parser_params *)arg;
if (!compile_for_eval && rb_safe_level() == 0) {
ruby_debug_lines = debug_lines(ruby_sourcefile);
if (ruby_debug_lines && ruby_sourceline > 0) {
VALUE str = rb_str_new(0, 0);
n = ruby_sourceline;
do {
rb_ary_push(ruby_debug_lines, str);
} while (--n);
}
}
parser->enc = rb_enc_get(lex_input);
parser_prepare(parser);
n = yyparse((void*)parser);
ruby_debug_lines = 0;
compile_for_eval = 0;
lex_strterm = 0;
if (parser->nerr) {
return 0;
}
tree = ruby_eval_tree;
if (!tree) {
tree = NEW_NIL();
}
if (ruby_eval_tree_begin) {
NODE *scope = ruby_eval_tree;
if (scope) {
scope->nd_body = NEW_PRELUDE(ruby_eval_tree_begin, scope->nd_body);
}
tree = scope;
}
else {
tree = ruby_eval_tree;
}
return (VALUE)tree;
}
static NODE*
yycompile(struct parser_params *parser, const char *f, int line)
{
ruby_sourcefile = rb_source_filename(f);
ruby_sourceline = line - 1;
return (NODE *)ruby_suppress_tracing(yycompile0, (VALUE)parser, Qtrue);
}
#endif /* !RIPPER */
static VALUE
lex_get_str(struct parser_params *parser, VALUE s)
{
char *beg, *end, *pend;
beg = RSTRING_PTR(s);
if (lex_gets_ptr) {
if (RSTRING_LEN(s) == lex_gets_ptr) return Qnil;
beg += lex_gets_ptr;
}
pend = RSTRING_PTR(s) + RSTRING_LEN(s);
end = beg;
while (end < pend) {
if (*end++ == '\n') break;
}
lex_gets_ptr = end - RSTRING_PTR(s);
return STR_NEW(beg, end - beg);
}
static VALUE
lex_getline(struct parser_params *parser)
{
VALUE line = (*parser->parser_lex_gets)(parser, parser->parser_lex_input);
#ifndef RIPPER
if (ruby_debug_lines && !NIL_P(line)) {
rb_ary_push(ruby_debug_lines, line);
}
#endif
return line;
}
#ifndef RIPPER
NODE*
rb_compile_string(const char *f, VALUE s, int line)
{
VALUE volatile vparser = rb_parser_new();
return rb_parser_compile_string(vparser, f, s, line);
}
NODE*
rb_parser_compile_string(volatile VALUE vparser, const char *f, VALUE s, int line)
{
struct parser_params *parser;
NODE *node;
volatile VALUE tmp;
Data_Get_Struct(vparser, struct parser_params, parser);
lex_gets = lex_get_str;
lex_gets_ptr = 0;
lex_input = s;
lex_pbeg = lex_p = lex_pend = 0;
compile_for_eval = rb_parse_in_eval();
node = yycompile(parser, f, line);
tmp = vparser; /* prohibit tail call optimization */
return node;
}
NODE*
rb_compile_cstr(const char *f, const char *s, int len, int line)
{
return rb_compile_string(f, rb_str_new(s, len), line);
}
NODE*
rb_parser_compile_cstr(volatile VALUE vparser, const char *f, const char *s, int len, int line)
{
return rb_parser_compile_string(vparser, f, rb_str_new(s, len), line);
}
static VALUE
lex_io_gets(struct parser_params *parser, VALUE io)
{
return rb_io_gets(io);
}
NODE*
rb_compile_file(const char *f, VALUE file, int start)
{
VALUE volatile vparser = rb_parser_new();
return rb_parser_compile_file(vparser, f, file, start);
}
NODE*
rb_parser_compile_file(volatile VALUE vparser, const char *f, VALUE file, int start)
{
struct parser_params *parser;
volatile VALUE tmp;
NODE *node;
Data_Get_Struct(vparser, struct parser_params, parser);
lex_gets = lex_io_gets;
lex_input = file;
lex_pbeg = lex_p = lex_pend = 0;
node = yycompile(parser, f, start);
tmp = vparser; /* prohibit tail call optimization */
return node;
}
#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
enum string_type {
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_dword = (STR_FUNC_QWORDS|STR_FUNC_EXPAND),
str_ssym = (STR_FUNC_SYMBOL),
str_dsym = (STR_FUNC_SYMBOL|STR_FUNC_EXPAND),
};
static VALUE
parser_str_new(const char *p, long n, rb_encoding *enc, int func)
{
VALUE str;
str = rb_enc_str_new(p, n, enc);
if (!(func & STR_FUNC_REGEXP) &&
rb_enc_asciicompat(enc) &&
rb_enc_str_coderange(str) == ENC_CODERANGE_7BIT) {
rb_enc_associate(str, rb_default_encoding());
}
return str;
}
static inline int
parser_nextc(struct parser_params *parser)
{
int c;
if (lex_p == lex_pend) {
VALUE v = lex_nextline;
lex_nextline = 0;
if (!v) {
if (parser->eofp)
return -1;
if (!lex_input || NIL_P(v = lex_getline(parser))) {
parser->eofp = Qtrue;
lex_lastline = 0;
return -1;
}
}
{
#ifdef RIPPER
if (parser->tokp < lex_pend) {
if (NIL_P(parser->delayed)) {
parser->delayed = rb_str_buf_new(1024);
rb_str_buf_cat(parser->delayed,
parser->tokp, lex_pend - parser->tokp);
parser->delayed_line = ruby_sourceline;
parser->delayed_col = parser->tokp - lex_pbeg;
}
else {
rb_str_buf_cat(parser->delayed,
parser->tokp, lex_pend - parser->tokp);
}
}
#endif
if (heredoc_end > 0) {
ruby_sourceline = heredoc_end;
heredoc_end = 0;
}
ruby_sourceline++;
parser->line_count++;
lex_pbeg = lex_p = RSTRING_PTR(v);
lex_pend = lex_p + RSTRING_LEN(v);
#ifdef RIPPER
ripper_flush(parser);
#endif
lex_lastline = v;
}
}
c = (unsigned char)*lex_p++;
if (c == '\r' && lex_p < lex_pend && *lex_p == '\n') {
lex_p++;
c = '\n';
}
return c;
}
static void
parser_pushback(struct parser_params *parser, int c)
{
if (c == -1) return;
lex_p--;
if (lex_p > lex_pbeg && lex_p[0] == '\n' && lex_p[-1] == '\r') {
lex_p--;
}
}
#define lex_goto_eol(parser) (parser->parser_lex_p = parser->parser_lex_pend)
#define was_bol() (lex_p == lex_pbeg + 1)
#define peek(c) (lex_p != lex_pend && (c) == *lex_p)
#define tokfix() (tokenbuf[tokidx]='\0')
#define tok() tokenbuf
#define toklen() tokidx
#define toklast() (tokidx>0?tokenbuf[tokidx-1]:0)
static char*
parser_newtok(struct parser_params *parser)
{
tokidx = 0;
if (!tokenbuf) {
toksiz = 60;
tokenbuf = ALLOC_N(char, 60);
}
if (toksiz > 4096) {
toksiz = 60;
REALLOC_N(tokenbuf, char, 60);
}
return tokenbuf;
}
static char *
parser_tokspace(struct parser_params *parser, int n)
{
tokidx += n;
if (tokidx >= toksiz) {
do {toksiz *= 2;} while (toksiz < tokidx);
REALLOC_N(tokenbuf, char, toksiz);
}
return &tokenbuf[tokidx-n];
}
static void
parser_tokadd(struct parser_params *parser, int c)
{
tokenbuf[tokidx++] = (char)c;
if (tokidx >= toksiz) {
toksiz *= 2;
REALLOC_N(tokenbuf, char, toksiz);
}
}
static int
parser_tok_hex(struct parser_params *parser, int *numlen)
{
int c;
c = scan_hex(lex_p, 2, numlen);
if (!*numlen) {
yyerror("invalid hex escape");
return 0;
}
lex_p += *numlen;
return c;
}
#define tokcopy(n) memcpy(tokspace(n), lex_p - (n), (n))
static int
parser_tokadd_utf8(struct parser_params *parser, rb_encoding **encp,
int string_literal, int symbol_literal, int regexp_literal)
{
/*
* If string_literal is true, then we allow multiple codepoints
* in \u{}, and add the codepoints to the current token.
* Otherwise we're parsing a character literal and return a single
* codepoint without adding it
*/
int codepoint;
int numlen;
if (regexp_literal) { tokadd('\\'); tokadd('u'); }
if (peek('{')) { /* handle \u{...} form */
do {
if (regexp_literal) { tokadd(*lex_p); }
nextc();
codepoint = scan_hex(lex_p, 6, &numlen);
if (numlen == 0) {
yyerror("invalid Unicode escape");
return 0;
}
if (codepoint > 0x10ffff) {
yyerror("illegal Unicode codepoint (too large)");
return 0;
}
lex_p += numlen;
if (regexp_literal) {
tokcopy(numlen);
}
else if (codepoint >= 0x80) {
*encp = UTF8_ENC();
if (string_literal) tokaddmbc(codepoint, *encp);
}
else if (string_literal) {
if (codepoint == 0 && symbol_literal) {
yyerror("symbol cannot contain '\\u{0}'");
return 0;
}
tokadd(codepoint);
}
} while (string_literal && (peek(' ') || peek('\t')));
if (!peek('}')) {
yyerror("unterminated Unicode escape");
return 0;
}
if (regexp_literal) { tokadd('}'); }
nextc();
}
else { /* handle \uxxxx form */
codepoint = scan_hex(lex_p, 4, &numlen);
if (numlen < 4) {
yyerror("invalid Unicode escape");
return 0;
}
lex_p += 4;
if (regexp_literal) {
tokcopy(4);
}
else if (codepoint >= 0x80) {
*encp = UTF8_ENC();
if (string_literal) tokaddmbc(codepoint, *encp);
}
else if (string_literal) {
if (codepoint == 0 && symbol_literal) {
yyerror("symbol cannot contain '\\u0000'");
return 0;
}
tokadd(codepoint);
}
}
return codepoint;
}
#define ESCAPE_CONTROL 1
#define ESCAPE_META 2
static int
parser_read_escape(struct parser_params *parser, int flags,
rb_encoding **encp)
{
int c;
int numlen;
switch (c = nextc()) {
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':
if (flags & (ESCAPE_CONTROL|ESCAPE_META)) goto eof;
{
int numlen;
pushback(c);
c = scan_oct(lex_p, 3, &numlen);
lex_p += numlen;
}
return c;
case 'x': /* hex constant */
if (flags & (ESCAPE_CONTROL|ESCAPE_META)) goto eof;
c = tok_hex(&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()) != '-') {
pushback(c);
goto eof;
}
if ((c = nextc()) == '\\') {
return read_escape(flags|ESCAPE_META, encp) | 0x80;
}
else if (c == -1 || !ISASCII(c)) goto eof;
else {
return ((c & 0xff) | 0x80);
}
case 'C':
if ((c = nextc()) != '-') {
pushback(c);
goto eof;
}
case 'c':
if (flags & ESCAPE_CONTROL) goto eof;
if ((c = nextc())== '\\') {
c = read_escape(flags|ESCAPE_CONTROL, encp);
}
else if (c == '?')
return 0177;
else if (c == -1 || !ISASCII(c)) goto eof;
return c & 0x9f;
eof:
case -1:
yyerror("Invalid escape character syntax");
return '\0';
default:
return c;
}
}
static void
parser_tokaddmbc(struct parser_params *parser, int c, rb_encoding *enc)
{
int len = rb_enc_codelen(c, enc);
rb_enc_mbcput(c, tokspace(len), enc);
}
static int
parser_tokadd_escape(struct parser_params *parser, int term,
rb_encoding **encp)
{
int c;
int flags = 0;
first:
switch (c = nextc()) {
case '\n':
return 0; /* just ignore */
case '0': case '1': case '2': case '3': /* octal constant */
case '4': case '5': case '6': case '7':
if (flags & (ESCAPE_CONTROL|ESCAPE_META)) goto eof;
{
int numlen;
int oct;
oct = scan_oct(--lex_p, 3, &numlen);
if (numlen == 0) goto eof;
lex_p += numlen;
tokcopy(numlen + 1);
}
return 0;
case 'x': /* hex constant */
if (flags & (ESCAPE_CONTROL|ESCAPE_META)) goto eof;
{
int numlen;
int hex;
hex = tok_hex(&numlen);
if (numlen == 0) goto eof;
tokcopy(numlen + 2);
}
return 0;
case 'M':
if (flags & ESCAPE_META) goto eof;
if ((c = nextc()) != '-') {
pushback(c);
goto eof;
}
tokcopy(3);
flags |= ESCAPE_META;
goto escaped;
case 'C':
if (flags & ESCAPE_CONTROL) goto eof;
if ((c = nextc()) != '-') {
pushback(c);
goto eof;
}
tokcopy(3);
goto escaped;
case 'c':
if (flags & ESCAPE_CONTROL) goto eof;
tokcopy(2);
flags |= ESCAPE_CONTROL;
escaped:
if ((c = nextc()) == '\\') {
goto first;
}
else if (c == -1) goto eof;
tokadd(c);
return 0;
eof:
case -1:
yyerror("Invalid escape character syntax");
return -1;
default:
if (c != '\\' || c != term)
tokadd('\\');
tokadd(c);
}
return 0;
}
extern int rb_char_to_option_kcode(int c, int *option, int *kcode);
static int
parser_regx_options(struct parser_params *parser)
{
int kcode = 0;
int options = 0;
int c, opt, kc;
newtok();
while (c = nextc(), ISALPHA(c)) {
if (c == 'o') {
options |= RE_OPTION_ONCE;
}
else if (rb_char_to_option_kcode(c, &opt, &kc)) {
options |= opt;
if (kc >= 0) kcode = c;
}
else {
tokadd(c);
}
}
pushback(c);
if (toklen()) {
tokfix();
compile_error(PARSER_ARG "unknown regexp option%s - %s",
toklen() > 1 ? "s" : "", tok());
}
return options | RE_OPTION_ENCODING(kcode);
}
static void
dispose_string(VALUE str)
{
/* TODO: should use another API? */
if (RBASIC(str)->flags & RSTRING_NOEMBED)
xfree(RSTRING_PTR(str));
rb_gc_force_recycle(str);
}
static int
parser_tokadd_mbchar(struct parser_params *parser, int c)
{
int len = parser_precise_mbclen();
if (!MBCLEN_CHARFOUND(len)) {
compile_error(PARSER_ARG "illegal multibyte char");
return -1;
}
tokadd(c);
lex_p += --len;
if (len > 0) tokcopy(len);
return c;
}
#define tokadd_mbchar(c) parser_tokadd_mbchar(parser, c)
static int
parser_tokadd_string(struct parser_params *parser,
int func, int term, int paren, long *nest,
rb_encoding **encp)
{
int c;
int has_nonascii = 0;
rb_encoding *enc = *encp;
char *errbuf = 0;
static const char mixed_msg[] = "%s mixed within %s source";
#define mixed_error(enc1, enc2) if (!errbuf) { \
int len = sizeof(mixed_msg) - 4; \
len += strlen(rb_enc_name(enc1)); \
len += strlen(rb_enc_name(enc2)); \
errbuf = ALLOCA_N(char, len); \
snprintf(errbuf, len, mixed_msg, \
rb_enc_name(enc1), \
rb_enc_name(enc2)); \
yyerror(errbuf); \
}
#define mixed_escape(beg, enc1, enc2) do { \
const char *pos = lex_p; \
lex_p = beg; \
mixed_error(enc1, enc2); \
lex_p = pos; \
} while (0)
while ((c = nextc()) != -1) {
if (paren && c == paren) {
++*nest;
}
else if (c == term) {
if (!nest || !*nest) {
pushback(c);
break;
}
--*nest;
}
else if ((func & STR_FUNC_EXPAND) && c == '#' && lex_p < lex_pend) {
int c2 = *lex_p;
if (c2 == '$' || c2 == '@' || c2 == '{') {
pushback(c);
break;
}
}
else if (c == '\\') {
const char *beg = lex_p - 1;
c = nextc();
switch (c) {
case '\n':
if (func & STR_FUNC_QWORDS) break;
if (func & STR_FUNC_EXPAND) continue;
tokadd('\\');
break;
case '\\':
if (func & STR_FUNC_ESCAPE) tokadd(c);
break;
case 'u':
if ((func & STR_FUNC_EXPAND) == 0) {
tokadd('\\');
break;
}
parser_tokadd_utf8(parser, &enc, 1,
func & STR_FUNC_SYMBOL,
func & STR_FUNC_REGEXP);
if (has_nonascii && enc != *encp) {
mixed_escape(beg, enc, *encp);
}
continue;
default:
if (func & STR_FUNC_REGEXP) {
pushback(c);
if ((c = tokadd_escape(term, &enc)) < 0)
return -1;
if (has_nonascii && enc != *encp) {
mixed_escape(beg, enc, *encp);
}
continue;
}
else if (func & STR_FUNC_EXPAND) {
pushback(c);
if (func & STR_FUNC_ESCAPE) tokadd('\\');
c = read_escape(0, &enc);
}
else if ((func & STR_FUNC_QWORDS) && ISSPACE(c)) {
/* ignore backslashed spaces in %w */
}
else if (c != term && !(paren && c == paren)) {
tokadd('\\');
}
}
}
else if (!parser_isascii()) {
has_nonascii = 1;
if (enc != *encp) {
mixed_error(enc, *encp);
continue;
}
if (tokadd_mbchar(c) == -1) return -1;
continue;
}
else if ((func & STR_FUNC_QWORDS) && ISSPACE(c)) {
pushback(c);
break;
}
if (!c && (func & STR_FUNC_SYMBOL)) {
func &= ~STR_FUNC_SYMBOL;
compile_error(PARSER_ARG "symbol cannot contain '\\0'");
continue;
}
if (c & 0x80) {
has_nonascii = 1;
if (enc != *encp) {
mixed_error(enc, *encp);
continue;
}
}
tokadd(c);
}
*encp = enc;
return c;
}
#define NEW_STRTERM(func, term, paren) \
rb_node_newnode(NODE_STRTERM, (func), (term) | ((paren) << (CHAR_BIT * 2)), 0)
static int
parser_parse_string(struct parser_params *parser, NODE *quote)
{
int func = quote->nd_func;
int term = nd_term(quote);
int paren = nd_paren(quote);
int c, space = 0;
rb_encoding *enc = parser->enc;
if (func == -1) return tSTRING_END;
c = nextc();
if ((func & STR_FUNC_QWORDS) && ISSPACE(c)) {
do {c = nextc();} while (ISSPACE(c));
space = 1;
}
if (c == term && !quote->nd_nest) {
if (func & STR_FUNC_QWORDS) {
quote->nd_func = -1;
return ' ';
}
if (!(func & STR_FUNC_REGEXP)) return tSTRING_END;
set_yylval_num(regx_options());
return tREGEXP_END;
}
if (space) {
pushback(c);
return ' ';
}
newtok();
if ((func & STR_FUNC_EXPAND) && c == '#') {
switch (c = nextc()) {
case '$':
case '@':
pushback(c);
return tSTRING_DVAR;
case '{':
return tSTRING_DBEG;
}
tokadd('#');
}
pushback(c);
if (tokadd_string(func, term, paren, &quote->nd_nest,
&enc) == -1) {
ruby_sourceline = nd_line(quote);
if (func & STR_FUNC_REGEXP) {
if (parser->eofp)
compile_error(PARSER_ARG "unterminated regexp meets end of file");
return tREGEXP_END;
}
else {
if (parser->eofp)
compile_error(PARSER_ARG "unterminated string meets end of file");
return tSTRING_END;
}
}
tokfix();
set_yylval_str(STR_NEW3(tok(), toklen(), enc, func));
return tSTRING_CONTENT;
}
static int
parser_heredoc_identifier(struct parser_params *parser)
{
int c = nextc(), term, func = 0, len;
if (c == '-') {
c = nextc();
func = STR_FUNC_INDENT;
}
switch (c) {
case '\'':
func |= str_squote; goto quoted;
case '"':
func |= str_dquote; goto quoted;
case '`':
func |= str_xquote;
quoted:
newtok();
tokadd(func);
term = c;
while ((c = nextc()) != -1 && c != term) {
if (tokadd_mbchar(c) == -1) return 0;
}
if (c == -1) {
compile_error(PARSER_ARG "unterminated here document identifier");
return 0;
}
break;
default:
if (!parser_is_identchar()) {
pushback(c);
if (func & STR_FUNC_INDENT) {
pushback('-');
}
return 0;
}
newtok();
term = '"';
tokadd(func |= str_dquote);
do {
if (tokadd_mbchar(c) == -1) return 0;
} while ((c = nextc()) != -1 && parser_is_identchar());
pushback(c);
break;
}
tokfix();
#ifdef RIPPER
ripper_dispatch_scan_event(parser, tHEREDOC_BEG);
#endif
len = lex_p - lex_pbeg;
lex_goto_eol(parser);
lex_strterm = rb_node_newnode(NODE_HEREDOC,
STR_NEW(tok(), toklen()), /* nd_lit */
len, /* nd_nth */
lex_lastline); /* nd_orig */
nd_set_line(lex_strterm, ruby_sourceline);
#ifdef RIPPER
ripper_flush(parser);
#endif
return term == '`' ? tXSTRING_BEG : tSTRING_BEG;
}
static void
parser_heredoc_restore(struct parser_params *parser, NODE *here)
{
VALUE line;
#ifdef RIPPER
if (!NIL_P(parser->delayed))
ripper_dispatch_delayed_token(parser, tSTRING_CONTENT);
lex_goto_eol(parser);
ripper_dispatch_scan_event(parser, tHEREDOC_END);
#endif
line = here->nd_orig;
lex_lastline = line;
lex_pbeg = RSTRING_PTR(line);
lex_pend = lex_pbeg + RSTRING_LEN(line);
lex_p = lex_pbeg + here->nd_nth;
heredoc_end = ruby_sourceline;
ruby_sourceline = nd_line(here);
dispose_string(here->nd_lit);
rb_gc_force_recycle((VALUE)here);
#ifdef RIPPER
ripper_flush(parser);
#endif
}
static int
parser_whole_match_p(struct parser_params *parser,
const char *eos, int len, int indent)
{
const char *p = lex_pbeg;
int n;
if (indent) {
while (*p && ISSPACE(*p)) p++;
}
n= lex_pend - (p + len);
if (n < 0 || (n > 0 && p[len] != '\n' && p[len] != '\r')) return Qfalse;
if (strncmp(eos, p, len) == 0) return Qtrue;
return Qfalse;
}
static int
parser_here_document(struct parser_params *parser, NODE *here)
{
int c, func, indent = 0;
const char *eos, *p, *pend;
long len;
VALUE str = 0;
eos = RSTRING_PTR(here->nd_lit);
len = RSTRING_LEN(here->nd_lit) - 1;
indent = (func = *eos++) & STR_FUNC_INDENT;
if ((c = nextc()) == -1) {
error:
compile_error(PARSER_ARG "can't find string \"%s\" anywhere before EOF", eos);
restore:
heredoc_restore(lex_strterm);
lex_strterm = 0;
return 0;
}
if (was_bol() && whole_match_p(eos, len, indent)) {
heredoc_restore(lex_strterm);
return tSTRING_END;
}
if (!(func & STR_FUNC_EXPAND)) {
do {
p = RSTRING_PTR(lex_lastline);
pend = lex_pend;
if (pend > p) {
switch (pend[-1]) {
case '\n':
if (--pend == p || pend[-1] != '\r') {
pend++;
break;
}
case '\r':
--pend;
}
}
if (str)
rb_str_cat(str, p, pend - p);
else
str = STR_NEW(p, pend - p);
if (pend < lex_pend) rb_str_cat(str, "\n", 1);
lex_goto_eol(parser);
if (nextc() == -1) {
if (str) dispose_string(str);
goto error;
}
} while (!whole_match_p(eos, len, indent));
}
else {
/* int mb = ENC_CODERANGE_7BIT, *mbp = &mb;*/
rb_encoding *enc = parser->enc;
newtok();
if (c == '#') {
switch (c = nextc()) {
case '$':
case '@':
pushback(c);
return tSTRING_DVAR;
case '{':
return tSTRING_DBEG;
}
tokadd('#');
}
do {
pushback(c);
if ((c = tokadd_string(func, '\n', 0, NULL, &enc)) == -1) {
if (parser->eofp) goto error;
goto restore;
}
if (c != '\n') {
set_yylval_str(STR_NEW3(tok(), toklen(), enc, func));
return tSTRING_CONTENT;
}
tokadd(nextc());
/* if (mbp && mb == ENC_CODERANGE_UNKNOWN) mbp = 0;*/
if ((c = nextc()) == -1) goto error;
} while (!whole_match_p(eos, len, indent));
str = STR_NEW3(tok(), toklen(), enc, func);
}
heredoc_restore(lex_strterm);
lex_strterm = NEW_STRTERM(-1, 0, 0);
set_yylval_str(str);
return tSTRING_CONTENT;
}
#include "lex.c"
#ifndef RIPPER
static void
arg_ambiguous_gen(struct parser_params *parser)
{
rb_warning0("ambiguous first argument; put parentheses or even spaces");
}
#else
static void
arg_ambiguous_gen(struct parser_params *parser)
{
dispatch0(arg_ambiguous);
}
#endif
#define arg_ambiguous() arg_ambiguous_gen(parser)
static int
lvar_defined_gen(struct parser_params *parser, ID id)
{
#ifndef RIPPER
return (dyna_in_block() && dvar_defined(id)) || local_id(id);
#else
return 0;
#endif
}
/* emacsen -*- hack */
static void
parser_set_encode(struct parser_params *parser, const char *name)
{
int idx = rb_enc_find_index(name);
if (idx < 0) {
rb_raise(rb_eArgError, "unknown encoding name: %s", name);
}
parser->enc = rb_enc_from_index(idx);
}
#ifndef RIPPER
typedef void (*rb_magic_comment_setter_t)(struct parser_params *parser, const char *name, const char *val);
static void
magic_comment_encoding(struct parser_params *parser, const char *name, const char *val)
{
if (parser && parser->line_count != (parser->has_shebang ? 2 : 1))
return;
parser_set_encode(parser, val);
}
struct magic_comment {
const char *name;
rb_magic_comment_setter_t func;
};
static const struct magic_comment magic_comments[] = {
{"coding", magic_comment_encoding},
{"encoding", magic_comment_encoding},
};
#endif
static const char *
magic_comment_marker(const char *str, int len)
{
int 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 *parser, const char *str, int len)
{
VALUE name = 0, val = 0;
const char *beg, *end, *vbeg, *vend;
#define str_copy(_s, _p, _n) ((_s) \
? (rb_str_resize((_s), (_n)), \
MEMCPY(RSTRING_PTR(_s), (_p), char, (_n)), (_s)) \
: ((_s) = STR_NEW((_p), (_n))))
if (len <= 7) return Qfalse;
if (!(beg = magic_comment_marker(str, len))) return Qfalse;
if (!(end = magic_comment_marker(beg, str + len - beg))) return Qfalse;
str = beg;
len = end - beg - 3;
/* %r"([^\\s\'\":;]+)\\s*:\\s*(\"(?:\\\\.|[^\"])*\"|[^\"\\s;]+)[\\s;]*" */
while (len > 0) {
#ifndef RIPPER
const struct magic_comment *p = magic_comments;
#endif
int 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 != ':') 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;
}
while (len > 0 && (*str == ';' || ISSPACE(*str))) --len, str++;
n = end - beg;
str_copy(name, beg, n);
#ifndef RIPPER
do {
if (strncasecmp(p->name, RSTRING_PTR(name), n) == 0) {
str_copy(val, vbeg, vend - vbeg);
(*p->func)(parser, RSTRING_PTR(name), RSTRING_PTR(val));
break;
}
} while (++p < magic_comments + sizeof(magic_comments) / sizeof(*p));
#else
dispatch2(magic_comment, name, val);
#endif
}
return Qtrue;
}
static void
set_file_encoding(struct parser_params *parser, 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, str - beg);
parser_set_encode(parser, RSTRING_PTR(s));
rb_str_resize(s, 0);
}
static void
parser_prepare(struct parser_params *parser)
{
int c = nextc();
switch (c) {
case '#':
if (peek('!')) parser->has_shebang = 1;
break;
case 0xef: /* UTF-8 BOM marker */
if (lex_pend - lex_p >= 2 &&
(unsigned char)lex_p[0] == 0xbb &&
(unsigned char)lex_p[1] == 0xbf) {
parser_set_encode(parser, "UTF-8");
lex_p += 2;
lex_pbeg = lex_p;
return;
}
break;
case EOF:
return;
}
pushback(c);
}
#define IS_ARG() (lex_state == EXPR_ARG || lex_state == EXPR_CMDARG)
#define IS_BEG() (lex_state == EXPR_BEG || lex_state == EXPR_MID || lex_state == EXPR_VALUE || lex_state == EXPR_CLASS)
static int
parser_yylex(struct parser_params *parser)
{
register int c;
int space_seen = 0;
int cmd_state;
enum lex_state_e last_state;
rb_encoding *enc;
int mb;
#ifdef RIPPER
int fallthru = Qfalse;
#endif
if (lex_strterm) {
int token;
if (nd_type(lex_strterm) == NODE_HEREDOC) {
token = here_document(lex_strterm);
if (token == tSTRING_END) {
lex_strterm = 0;
lex_state = EXPR_ENDARG;
}
}
else {
token = parse_string(lex_strterm);
if (token == tSTRING_END || token == tREGEXP_END) {
rb_gc_force_recycle((VALUE)lex_strterm);
lex_strterm = 0;
lex_state = EXPR_ENDARG;
}
}
return token;
}
cmd_state = command_start;
command_start = Qfalse;
retry:
switch (c = nextc()) {
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++;
#ifdef RIPPER
while ((c = nextc())) {
switch (c) {
case ' ': case '\t': case '\f': case '\r':
case '\13': /* '\v' */
break;
default:
goto outofloop;
}
}
outofloop:
pushback(c);
ripper_dispatch_scan_event(parser, tSP);
#endif
goto retry;
case '#': /* it's a comment */
if (!parser->has_shebang || parser->line_count != 1) {
/* no magic_comment in shebang line */
if (!parser_magic_comment(parser, lex_p, lex_pend - lex_p)) {
if (parser->line_count == (parser->has_shebang ? 2 : 1)) {
set_file_encoding(parser, lex_p, lex_pend);
}
}
}
lex_p = lex_pend;
#ifdef RIPPER
ripper_dispatch_scan_event(parser, tCOMMENT);
fallthru = Qtrue;
#endif
/* fall through */
case '\n':
switch (lex_state) {
case EXPR_BEG:
case EXPR_FNAME:
case EXPR_DOT:
case EXPR_CLASS:
case EXPR_VALUE:
#ifdef RIPPER
if (!fallthru) {
ripper_dispatch_scan_event(parser, tIGNORED_NL);
}
fallthru = Qfalse;
#endif
goto retry;
default:
break;
}
while ((c = nextc())) {
switch (c) {
case ' ': case '\t': case '\f': case '\r':
case '\13': /* '\v' */
space_seen++;
break;
case '.': {
if ((c = nextc()) != '.') {
pushback(c);
pushback('.');
goto retry;
}
}
default:
--ruby_sourceline;
case -1: /* EOF no decrement*/
lex_nextline = lex_lastline;
lex_p = lex_pend;
#ifdef RIPPER
if (c != -1) {
parser->tokp = lex_p;
}
#endif
goto normal_newline;
}
}
normal_newline:
command_start = Qtrue;
lex_state = EXPR_BEG;
return '\n';
case '*':
if ((c = nextc()) == '*') {
if ((c = nextc()) == '=') {
set_yylval_id(tPOW);
lex_state = EXPR_BEG;
return tOP_ASGN;
}
pushback(c);
c = tPOW;
}
else {
if (c == '=') {
set_yylval_id('*');
lex_state = EXPR_BEG;
return tOP_ASGN;
}
pushback(c);
if (IS_ARG() && space_seen && !ISSPACE(c)) {
rb_warning0("`*' interpreted as argument prefix");
c = tSTAR;
}
else if (IS_BEG()) {
c = tSTAR;
}
else {
c = '*';
}
}
switch (lex_state) {
case EXPR_FNAME: case EXPR_DOT:
lex_state = EXPR_ARG; break;
default:
lex_state = EXPR_BEG; break;
}
return c;
case '!':
c = nextc();
if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) {
lex_state = EXPR_ARG;
if (c == '@') {
return '!';
}
}
else {
lex_state = EXPR_BEG;
}
if (c == '=') {
return tNEQ;
}
if (c == '~') {
return tNMATCH;
}
pushback(c);
return '!';
case '=':
if (was_bol()) {
/* skip embedded rd document */
if (strncmp(lex_p, "begin", 5) == 0 && ISSPACE(lex_p[5])) {
#ifdef RIPPER
int first_p = Qtrue;
lex_goto_eol(parser);
ripper_dispatch_scan_event(parser, tEMBDOC_BEG);
#endif
for (;;) {
lex_goto_eol(parser);
#ifdef RIPPER
if (!first_p) {
ripper_dispatch_scan_event(parser, tEMBDOC);
}
first_p = Qfalse;
#endif
c = nextc();
if (c == -1) {
compile_error(PARSER_ARG "embedded document meets end of file");
return 0;
}
if (c != '=') continue;
if (strncmp(lex_p, "end", 3) == 0 &&
(lex_p + 3 == lex_pend || ISSPACE(lex_p[3]))) {
break;
}
}
lex_goto_eol(parser);
#ifdef RIPPER
ripper_dispatch_scan_event(parser, tEMBDOC_END);
#endif
goto retry;
}
}
switch (lex_state) {
case EXPR_FNAME: case EXPR_DOT:
lex_state = EXPR_ARG; break;
default:
lex_state = EXPR_BEG; break;
}
if ((c = nextc()) == '=') {
if ((c = nextc()) == '=') {
return tEQQ;
}
pushback(c);
return tEQ;
}
if (c == '~') {
return tMATCH;
}
else if (c == '>') {
return tASSOC;
}
pushback(c);
return '=';
case '<':
c = nextc();
if (c == '<' &&
lex_state != EXPR_END &&
lex_state != EXPR_DOT &&
lex_state != EXPR_ENDARG &&
lex_state != EXPR_CLASS &&
(!IS_ARG() || space_seen)) {
int token = heredoc_identifier();
if (token) return token;
}
switch (lex_state) {
case EXPR_FNAME: case EXPR_DOT:
lex_state = EXPR_ARG; break;
default:
lex_state = EXPR_BEG; break;
}
if (c == '=') {
if ((c = nextc()) == '>') {
return tCMP;
}
pushback(c);
return tLEQ;
}
if (c == '<') {
if ((c = nextc()) == '=') {
set_yylval_id(tLSHFT);
lex_state = EXPR_BEG;
return tOP_ASGN;
}
pushback(c);
return tLSHFT;
}
pushback(c);
return '<';
case '>':
switch (lex_state) {
case EXPR_FNAME: case EXPR_DOT:
lex_state = EXPR_ARG; break;
default:
lex_state = EXPR_BEG; break;
}
if ((c = nextc()) == '=') {
return tGEQ;
}
if (c == '>') {
if ((c = nextc()) == '=') {
set_yylval_id(tRSHFT);
lex_state = EXPR_BEG;
return tOP_ASGN;
}
pushback(c);
return tRSHFT;
}
pushback(c);
return '>';
case '"':
lex_strterm = NEW_STRTERM(str_dquote, '"', 0);
return tSTRING_BEG;
case '`':
if (lex_state == EXPR_FNAME) {
lex_state = EXPR_END;
return c;
}
if (lex_state == EXPR_DOT) {
if (cmd_state)
lex_state = EXPR_CMDARG;
else
lex_state = EXPR_ARG;
return c;
}
lex_strterm = NEW_STRTERM(str_xquote, '`', 0);
return tXSTRING_BEG;
case '\'':
lex_strterm = NEW_STRTERM(str_squote, '\'', 0);
return tSTRING_BEG;
case '?':
if (lex_state == EXPR_END ||
lex_state == EXPR_ENDARG) {
lex_state = EXPR_VALUE;
return '?';
}
c = nextc();
if (c == -1) {
compile_error(PARSER_ARG "incomplete character syntax");
return 0;
}
if (rb_enc_isspace(c, parser->enc)) {
if (!IS_ARG()) {
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;
}
if (c2) {
rb_warnI("invalid character syntax; use ?\\%c", c2);
}
}
ternary:
pushback(c);
lex_state = EXPR_VALUE;
return '?';
}
newtok();
enc = parser->enc;
if (!parser_isascii()) {
if (tokadd_mbchar(c) == -1) return 0;
}
else if ((rb_enc_isalnum(c, parser->enc) || c == '_') &&
lex_p < lex_pend && is_identchar(lex_p, lex_pend, parser->enc)) {
goto ternary;
}
else if (c == '\\') {
if (peek('u')) {
nextc();
c = parser_tokadd_utf8(parser, &enc, 0, 0, 0);
if (0x80 <= c) {
tokaddmbc(c, enc);
}
else {
tokadd(c);
}
}
else {
c = read_escape(0, &enc);
tokadd(c);
}
}
else {
tokadd(c);
}
tokfix();
set_yylval_str(STR_NEW3(tok(), toklen(), enc, 0));
lex_state = EXPR_ENDARG;
return tCHAR;
case '&':
if ((c = nextc()) == '&') {
lex_state = EXPR_BEG;
if ((c = nextc()) == '=') {
set_yylval_id(tANDOP);
lex_state = EXPR_BEG;
return tOP_ASGN;
}
pushback(c);
return tANDOP;
}
else if (c == '=') {
set_yylval_id('&');
lex_state = EXPR_BEG;
return tOP_ASGN;
}
pushback(c);
if (IS_ARG() && space_seen && !ISSPACE(c)) {
rb_warning0("`&' interpreted as argument prefix");
c = tAMPER;
}
else if (IS_BEG()) {
c = tAMPER;
}
else {
c = '&';
}
switch (lex_state) {
case EXPR_FNAME: case EXPR_DOT:
lex_state = EXPR_ARG; break;
default:
lex_state = EXPR_BEG;
}
return c;
case '|':
if ((c = nextc()) == '|') {
lex_state = EXPR_BEG;
if ((c = nextc()) == '=') {
set_yylval_id(tOROP);
lex_state = EXPR_BEG;
return tOP_ASGN;
}
pushback(c);
return tOROP;
}
if (c == '=') {
set_yylval_id('|');
lex_state = EXPR_BEG;
return tOP_ASGN;
}
if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) {
lex_state = EXPR_ARG;
}
else {
lex_state = EXPR_BEG;
}
pushback(c);
return '|';
case '+':
c = nextc();
if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) {
lex_state = EXPR_ARG;
if (c == '@') {
return tUPLUS;
}
pushback(c);
return '+';
}
if (c == '=') {
set_yylval_id('+');
lex_state = EXPR_BEG;
return tOP_ASGN;
}
if (IS_BEG() ||
(IS_ARG() && space_seen && !ISSPACE(c))) {
if (IS_ARG()) arg_ambiguous();
lex_state = EXPR_BEG;
pushback(c);
if (ISDIGIT(c)) {
c = '+';
goto start_num;
}
return tUPLUS;
}
lex_state = EXPR_BEG;
pushback(c);
return '+';
case '-':
c = nextc();
if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) {
lex_state = EXPR_ARG;
if (c == '@') {
return tUMINUS;
}
pushback(c);
return '-';
}
if (c == '=') {
set_yylval_id('-');
lex_state = EXPR_BEG;
return tOP_ASGN;
}
if (c == '>') {
lex_state = EXPR_ARG;
return tLAMBDA;
}
if (IS_BEG() ||
(IS_ARG() && space_seen && !ISSPACE(c))) {
if (IS_ARG()) arg_ambiguous();
lex_state = EXPR_BEG;
pushback(c);
if (ISDIGIT(c)) {
return tUMINUS_NUM;
}
return tUMINUS;
}
lex_state = EXPR_BEG;
pushback(c);
return '-';
case '.':
lex_state = EXPR_BEG;
if ((c = nextc()) == '.') {
if ((c = nextc()) == '.') {
return tDOT3;
}
pushback(c);
return tDOT2;
}
pushback(c);
if (ISDIGIT(c)) {
yyerror("no .<digit> floating literal anymore; put 0 before dot");
}
lex_state = EXPR_DOT;
return '.';
start_num:
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
{
int is_float, seen_point, seen_e, nondigit;
is_float = seen_point = seen_e = nondigit = 0;
lex_state = EXPR_ENDARG;
newtok();
if (c == '-' || c == '+') {
tokadd(c);
c = nextc();
}
if (c == '0') {
int start = toklen();
c = nextc();
if (c == 'x' || c == 'X') {
/* hexadecimal */
c = nextc();
if (ISXDIGIT(c)) {
do {
if (c == '_') {
if (nondigit) break;
nondigit = c;
continue;
}
if (!ISXDIGIT(c)) break;
nondigit = 0;
tokadd(c);
} while ((c = nextc()) != -1);
}
pushback(c);
tokfix();
if (toklen() == start) {
yyerror("numeric literal without digits");
}
else if (nondigit) goto trailing_uc;
set_yylval_literal(rb_cstr_to_inum(tok(), 16, Qfalse));
return tINTEGER;
}
if (c == 'b' || c == 'B') {
/* binary */
c = nextc();
if (c == '0' || c == '1') {
do {
if (c == '_') {
if (nondigit) break;
nondigit = c;
continue;
}
if (c != '0' && c != '1') break;
nondigit = 0;
tokadd(c);
} while ((c = nextc()) != -1);
}
pushback(c);
tokfix();
if (toklen() == start) {
yyerror("numeric literal without digits");
}
else if (nondigit) goto trailing_uc;
set_yylval_literal(rb_cstr_to_inum(tok(), 2, Qfalse));
return tINTEGER;
}
if (c == 'd' || c == 'D') {
/* decimal */
c = nextc();
if (ISDIGIT(c)) {
do {
if (c == '_') {
if (nondigit) break;
nondigit = c;
continue;
}
if (!ISDIGIT(c)) break;
nondigit = 0;
tokadd(c);
} while ((c = nextc()) != -1);
}
pushback(c);
tokfix();
if (toklen() == start) {
yyerror("numeric literal without digits");
}
else if (nondigit) goto trailing_uc;
set_yylval_literal(rb_cstr_to_inum(tok(), 10, Qfalse));
return tINTEGER;
}
if (c == '_') {
/* 0_0 */
goto octal_number;
}
if (c == 'o' || c == 'O') {
/* prefixed octal */
c = nextc();
if (c == '_') {
yyerror("numeric literal without digits");
}
}
if (c >= '0' && c <= '7') {
/* octal */
octal_number:
do {
if (c == '_') {
if (nondigit) break;
nondigit = c;
continue;
}
if (c < '0' || c > '7') break;
nondigit = 0;
tokadd(c);
} while ((c = nextc()) != -1);
if (toklen() > start) {
pushback(c);
tokfix();
if (nondigit) goto trailing_uc;
set_yylval_literal(rb_cstr_to_inum(tok(), 8, Qfalse));
return tINTEGER;
}
if (nondigit) {
pushback(c);
goto trailing_uc;
}
}
if (c > '7' && c <= '9') {
yyerror("Illegal octal digit");
}
else if (c == '.' || c == 'e' || c == 'E') {
tokadd('0');
}
else {
pushback(c);
set_yylval_literal(INT2FIX(0));
return tINTEGER;
}
}
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(c);
break;
case '.':
if (nondigit) goto trailing_uc;
if (seen_point || seen_e) {
goto decode_num;
}
else {
int c0 = nextc();
if (!ISDIGIT(c0)) {
pushback(c0);
goto decode_num;
}
c = c0;
}
tokadd('.');
tokadd(c);
is_float++;
seen_point++;
nondigit = 0;
break;
case 'e':
case 'E':
if (nondigit) {
pushback(c);
c = nondigit;
goto decode_num;
}
if (seen_e) {
goto decode_num;
}
tokadd(c);
seen_e++;
is_float++;
nondigit = c;
c = nextc();
if (c != '-' && c != '+') continue;
tokadd(c);
nondigit = c;
break;
case '_': /* `_' in number just ignored */
if (nondigit) goto decode_num;
nondigit = c;
break;
default:
goto decode_num;
}
c = nextc();
}
decode_num:
pushback(c);
tokfix();
if (nondigit) {
char tmp[30];
trailing_uc:
sprintf(tmp, "trailing `%c' in number", nondigit);
yyerror(tmp);
}
if (is_float) {
double d = strtod(tok(), 0);
if (errno == ERANGE) {
rb_warnS("Float %s out of range", tok());
errno = 0;
}
set_yylval_literal(DOUBLE2NUM(d));
return tFLOAT;
}
set_yylval_literal(rb_cstr_to_inum(tok(), 10, Qfalse));
return tINTEGER;
}
case ')':
case ']':
paren_nest--;
case '}':
COND_LEXPOP();
CMDARG_LEXPOP();
if (c == ')')
lex_state = EXPR_END;
else
lex_state = EXPR_ENDARG;
return c;
case ':':
c = nextc();
if (c == ':') {
if (IS_BEG() ||
lex_state == EXPR_CLASS || (IS_ARG() && space_seen)) {
lex_state = EXPR_BEG;
return tCOLON3;
}
lex_state = EXPR_DOT;
return tCOLON2;
}
if (lex_state == EXPR_END ||
lex_state == EXPR_ENDARG || ISSPACE(c)) {
pushback(c);
lex_state = EXPR_BEG;
return ':';
}
switch (c) {
case '\'':
lex_strterm = NEW_STRTERM(str_ssym, c, 0);
break;
case '"':
lex_strterm = NEW_STRTERM(str_dsym, c, 0);
break;
default:
pushback(c);
break;
}
lex_state = EXPR_FNAME;
return tSYMBEG;
case '/':
if (IS_BEG()) {
lex_strterm = NEW_STRTERM(str_regexp, '/', 0);
return tREGEXP_BEG;
}
if ((c = nextc()) == '=') {
set_yylval_id('/');
lex_state = EXPR_BEG;
return tOP_ASGN;
}
pushback(c);
if (IS_ARG() && space_seen) {
if (!ISSPACE(c)) {
arg_ambiguous();
lex_strterm = NEW_STRTERM(str_regexp, '/', 0);
return tREGEXP_BEG;
}
}
switch (lex_state) {
case EXPR_FNAME: case EXPR_DOT:
lex_state = EXPR_ARG; break;
default:
lex_state = EXPR_BEG; break;
}
return '/';
case '^':
if ((c = nextc()) == '=') {
set_yylval_id('^');
lex_state = EXPR_BEG;
return tOP_ASGN;
}
switch (lex_state) {
case EXPR_FNAME: case EXPR_DOT:
lex_state = EXPR_ARG; break;
default:
lex_state = EXPR_BEG; break;
}
pushback(c);
return '^';
case ';':
lex_state = EXPR_BEG;
command_start = Qtrue;
return ';';
case ',':
lex_state = EXPR_BEG;
return ',';
case '~':
if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) {
if ((c = nextc()) != '@') {
pushback(c);
}
lex_state = EXPR_ARG;
}
else {
lex_state = EXPR_BEG;
}
return '~';
case '(':
if (IS_BEG()) {
c = tLPAREN;
}
else if (space_seen) {
if (lex_state == EXPR_CMDARG) {
c = tLPAREN_ARG;
}
else if (lex_state == EXPR_ARG) {
rb_warning0("don't put space before argument parentheses");
c = '(';
}
}
paren_nest++;
COND_PUSH(0);
CMDARG_PUSH(0);
lex_state = EXPR_BEG;
return c;
case '[':
paren_nest++;
if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) {
lex_state = EXPR_ARG;
if ((c = nextc()) == ']') {
if ((c = nextc()) == '=') {
return tASET;
}
pushback(c);
return tAREF;
}
pushback(c);
return '[';
}
else if (IS_BEG()) {
c = tLBRACK;
}
else if (IS_ARG() && space_seen) {
c = tLBRACK;
}
lex_state = EXPR_BEG;
COND_PUSH(0);
CMDARG_PUSH(0);
return c;
case '{':
if (lpar_beg && lpar_beg == paren_nest) {
lex_state = EXPR_BEG;
lpar_beg = 0;
--paren_nest;
return tLAMBEG;
}
if (IS_ARG() || lex_state == EXPR_END)
c = '{'; /* block (primary) */
else if (lex_state == EXPR_ENDARG)
c = tLBRACE_ARG; /* block (expr) */
else
c = tLBRACE; /* hash */
COND_PUSH(0);
CMDARG_PUSH(0);
lex_state = EXPR_BEG;
if (c != tLBRACE) command_start = Qtrue;
return c;
case '\\':
c = nextc();
if (c == '\n') {
space_seen = 1;
#ifdef RIPPER
ripper_dispatch_scan_event(parser, tSP);
#endif
goto retry; /* skip \\n */
}
pushback(c);
return '\\';
case '%':
if (IS_BEG()) {
int term;
int paren;
c = nextc();
quotation:
if (!ISALNUM(c)) {
term = c;
c = 'Q';
}
else {
term = nextc();
if (rb_enc_isalnum(term, parser->enc) || !parser_isascii()) {
yyerror("unknown type of %string");
return 0;
}
}
if (c == -1 || term == -1) {
compile_error(PARSER_ARG "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':
lex_strterm = NEW_STRTERM(str_dquote, term, paren);
return tSTRING_BEG;
case 'q':
lex_strterm = NEW_STRTERM(str_squote, term, paren);
return tSTRING_BEG;
case 'W':
lex_strterm = NEW_STRTERM(str_dword, term, paren);
do {c = nextc();} while (ISSPACE(c));
pushback(c);
return tWORDS_BEG;
case 'w':
lex_strterm = NEW_STRTERM(str_sword, term, paren);
do {c = nextc();} while (ISSPACE(c));
pushback(c);
return tQWORDS_BEG;
case 'x':
lex_strterm = NEW_STRTERM(str_xquote, term, paren);
return tXSTRING_BEG;
case 'r':
lex_strterm = NEW_STRTERM(str_regexp, term, paren);
return tREGEXP_BEG;
case 's':
lex_strterm = NEW_STRTERM(str_ssym, term, paren);
lex_state = EXPR_FNAME;
return tSYMBEG;
default:
yyerror("unknown type of %string");
return 0;
}
}
if ((c = nextc()) == '=') {
set_yylval_id('%');
lex_state = EXPR_BEG;
return tOP_ASGN;
}
if (IS_ARG() && space_seen && !ISSPACE(c)) {
goto quotation;
}
switch (lex_state) {
case EXPR_FNAME: case EXPR_DOT:
lex_state = EXPR_ARG; break;
default:
lex_state = EXPR_BEG; break;
}
pushback(c);
return '%';
case '$':
last_state = lex_state;
lex_state = EXPR_ENDARG;
newtok();
c = nextc();
switch (c) {
case '_': /* $_: last read line string */
c = nextc();
if (parser_is_identchar()) {
tokadd('$');
tokadd('_');
break;
}
pushback(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 '\"': /* $": already loaded files */
tokadd('$');
tokadd(c);
tokfix();
set_yylval_id(rb_intern(tok()));
return tGVAR;
case '-':
tokadd('$');
tokadd(c);
c = nextc();
if (parser_is_identchar()) {
if (tokadd_mbchar(c) == -1) return 0;
}
else {
pushback(c);
}
gvar:
tokfix();
set_yylval_id(rb_intern(tok()));
return tGVAR;
case '&': /* $&: last match */
case '`': /* $`: string before last match */
case '\'': /* $': string after last match */
case '+': /* $+: string matches last paren. */
if (last_state == EXPR_FNAME) {
tokadd('$');
tokadd(c);
goto gvar;
}
set_yylval_node(NEW_BACK_REF(c));
return tBACK_REF;
case '1': case '2': case '3':
case '4': case '5': case '6':
case '7': case '8': case '9':
tokadd('$');
do {
tokadd(c);
c = nextc();
} while (ISDIGIT(c));
pushback(c);
if (last_state == EXPR_FNAME) goto gvar;
tokfix();
set_yylval_node(NEW_NTH_REF(atoi(tok()+1)));
return tNTH_REF;
default:
if (!parser_is_identchar()) {
pushback(c);
return '$';
}
case '0':
tokadd('$');
}
break;
case '@':
c = nextc();
newtok();
tokadd('@');
if (c == '@') {
tokadd('@');
c = nextc();
}
if (ISDIGIT(c)) {
if (tokidx == 1) {
compile_error(PARSER_ARG "`@%c' is not allowed as an instance variable name", c);
}
else {
compile_error(PARSER_ARG "`@@%c' is not allowed as a class variable name", c);
}
return 0;
}
if (!parser_is_identchar()) {
pushback(c);
return '@';
}
break;
case '_':
if (was_bol() && whole_match_p("__END__", 7, 0)) {
ruby__end__seen = 1;
lex_lastline = 0;
#ifndef RIPPER
return -1;
#else
lex_goto_eol(parser);
ripper_dispatch_scan_event(parser, k__END__);
return 0;
#endif
}
newtok();
break;
default:
if (!parser_is_identchar()) {
rb_compile_error(PARSER_ARG "Invalid char `\\x%02X' in expression", c);
goto retry;
}
newtok();
break;
}
mb = ENC_CODERANGE_7BIT;
do {
if (!ISASCII(c)) mb = ENC_CODERANGE_UNKNOWN;
if (tokadd_mbchar(c) == -1) return 0;
c = nextc();
} while (parser_is_identchar());
if ((c == '!' || c == '?') && !peek('=')) {
tokadd(c);
}
else {
pushback(c);
}
tokfix();
{
int result = 0;
last_state = lex_state;
switch (tok()[0]) {
case '$':
lex_state = EXPR_ENDARG;
result = tGVAR;
break;
case '@':
lex_state = EXPR_ENDARG;
if (tok()[1] == '@')
result = tCVAR;
else
result = tIVAR;
break;
default:
if (toklast() == '!' || toklast() == '?') {
result = tFID;
}
else {
if (lex_state == EXPR_FNAME) {
if ((c = nextc()) == '=' && !peek('~') && !peek('>') &&
(!peek('=') || (lex_p + 1 < lex_pend && lex_p[1] == '>'))) {
result = tIDENTIFIER;
tokadd(c);
tokfix();
}
else {
pushback(c);
}
}
if (result == 0 && ISUPPER(tok()[0])) {
result = tCONSTANT;
}
else {
result = tIDENTIFIER;
}
}
if (mb == ENC_CODERANGE_7BIT && lex_state != EXPR_DOT) {
const struct kwtable *kw;
/* See if it is a reserved word. */
kw = rb_reserved_word(tok(), toklen());
if (kw) {
enum lex_state_e state = lex_state;
lex_state = kw->state;
if (state == EXPR_FNAME) {
set_yylval_id(rb_intern(kw->name));
return kw->id[0];
}
if (kw->id[0] == keyword_do) {
command_start = Qtrue;
if (lpar_beg && lpar_beg == paren_nest) {
lpar_beg = 0;
--paren_nest;
return keyword_do_LAMBDA;
}
if (COND_P()) return keyword_do_cond;
if (CMDARG_P() && state != EXPR_CMDARG)
return keyword_do_block;
if (state == EXPR_ENDARG || state == EXPR_BEG)
return keyword_do_block;
return keyword_do;
}
if (state == EXPR_BEG || state == EXPR_VALUE)
return kw->id[0];
else {
if (kw->id[0] != kw->id[1])
lex_state = EXPR_BEG;
return kw->id[1];
}
}
}
if ((lex_state == EXPR_BEG && !cmd_state) ||
lex_state == EXPR_ARG ||
lex_state == EXPR_CMDARG) {
if (peek(':') && !(lex_p + 1 < lex_pend && lex_p[1] == ':')) {
lex_state = EXPR_BEG;
nextc();
set_yylval_id(TOK_INTERN(!ENC_SINGLE(mb)));
return tLABEL;
}
}
if (IS_BEG() ||
lex_state == EXPR_DOT ||
IS_ARG()) {
if (cmd_state) {
lex_state = EXPR_CMDARG;
}
else {
lex_state = EXPR_ARG;
}
}
else {
lex_state = EXPR_END;
}
}
{
ID ident = TOK_INTERN(!ENC_SINGLE(mb));
set_yylval_id(ident);
if (last_state != EXPR_DOT && is_local_id(ident) && lvar_defined(ident)) {
lex_state = EXPR_END;
}
}
return result;
}
}
#if YYPURE
static int
yylex(void *lval, void *p)
#else
yylex(void *p)
#endif
{
struct parser_params *parser = (struct parser_params*)p;
int t;
#if YYPURE
parser->parser_yylval = (union tmpyystype*)lval;
parser->parser_yylval->val = Qundef;
#endif
t = parser_yylex(parser);
#ifdef RIPPER
if (!NIL_P(parser->delayed)) {
ripper_dispatch_delayed_token(parser, t);
return t;
}
if (t != 0)
ripper_dispatch_scan_event(parser, t);
#endif
return t;
}
#ifndef RIPPER
static NODE*
node_newnode(struct parser_params *parser, enum node_type type, VALUE a0, VALUE a1, VALUE a2)
{
NODE *n = (rb_node_newnode)(type, a0, a1, a2);
nd_set_line(n, ruby_sourceline);
n->nd_file = ruby_sourcefile;
return n;
}
enum node_type
nodetype(NODE *node) /* for debug */
{
return (enum node_type)nd_type(node);
}
int
nodeline(NODE *node)
{
return nd_line(node);
}
static NODE*
newline_node(NODE *node)
{
if (node) {
node = remove_begin(node);
node->flags |= NODE_NEWLINE;
}
return node;
}
static void
fixpos(NODE *node, NODE *orig)
{
if (!node) return;
if (!orig) return;
if (orig == (NODE*)1) return;
node->nd_file = orig->nd_file;
nd_set_line(node, nd_line(orig));
}
static void
parser_warning(NODE *node, const char *mesg)
{
rb_compile_warning(node->nd_file, nd_line(node), "%s", mesg);
}
static void
parser_warn(NODE *node, const char *mesg)
{
rb_compile_warn(node->nd_file, nd_line(node), "%s", mesg);
}
static NODE*
block_append_gen(struct parser_params *parser, 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(h, "unused literal ignored");
return tail;
default:
h = end = NEW_BLOCK(head);
end->nd_end = end;
fixpos(end, head);
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(nd, "statement not reached");
}
break;
default:
break;
}
if (nd_type(tail) != NODE_BLOCK) {
tail = NEW_BLOCK(tail);
tail->nd_end = tail;
}
end->nd_next = tail;
h->nd_end = tail->nd_end;
return head;
}
/* append item to the list */
static NODE*
list_append_gen(struct parser_params *parser, NODE *list, NODE *item)
{
NODE *last;
if (list == 0) return NEW_LIST(item);
if (list->nd_next) {
last = list->nd_next->nd_end;
}
else {
last = list;
}
list->nd_alen += 1;
last->nd_next = NEW_LIST(item);
list->nd_next->nd_end = last->nd_next;
return list;
}
/* concat two lists */
static NODE*
list_concat_gen(struct parser_params *parser, 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;
}
return head;
}
static void
literal_concat0(struct parser_params *parser, VALUE head, VALUE tail)
{
if (!rb_enc_compatible(head, tail)) {
compile_error(PARSER_ARG "string literal encodings differ (%s / %s)",
rb_enc_name(rb_enc_get(head)),
rb_enc_name(rb_enc_get(tail)));
}
rb_str_buf_append(head, tail);
}
/* concat two string literals */
static NODE *
literal_concat_gen(struct parser_params *parser, NODE *head, NODE *tail)
{
enum node_type htype;
if (!head) return tail;
if (!tail) return head;
htype = nd_type(head);
if (htype == NODE_EVSTR) {
NODE *node = NEW_DSTR(rb_str_new(0, 0));
head = list_append(node, head);
}
switch (nd_type(tail)) {
case NODE_STR:
if (htype == NODE_STR) {
literal_concat0(parser, head->nd_lit, tail->nd_lit);
rb_gc_force_recycle((VALUE)tail);
}
else {
list_append(head, tail);
}
break;
case NODE_DSTR:
if (htype == NODE_STR) {
literal_concat0(parser, head->nd_lit, tail->nd_lit);
tail->nd_lit = head->nd_lit;
rb_gc_force_recycle((VALUE)head);
head = tail;
}
else {
nd_set_type(tail, NODE_ARRAY);
tail->nd_head = NEW_STR(tail->nd_lit);
list_concat(head, tail);
}
break;
case NODE_EVSTR:
if (htype == NODE_STR) {
nd_set_type(head, NODE_DSTR);
head->nd_alen = 1;
}
list_append(head, tail);
break;
}
return head;
}
static NODE *
evstr2dstr_gen(struct parser_params *parser, NODE *node)
{
if (nd_type(node) == NODE_EVSTR) {
node = list_append(NEW_DSTR(rb_str_new(0, 0)), node);
}
return node;
}
static NODE *
new_evstr_gen(struct parser_params *parser, NODE *node)
{
NODE *head = node;
if (node) {
switch (nd_type(node)) {
case NODE_STR: case NODE_DSTR: case NODE_EVSTR:
return node;
}
}
return NEW_EVSTR(head);
}
static NODE *
call_bin_op_gen(struct parser_params *parser, NODE *recv, ID id, NODE *arg1)
{
value_expr(recv);
value_expr(arg1);
return NEW_CALL(recv, id, NEW_LIST(arg1));
}
static NODE *
call_uni_op_gen(struct parser_params *parser, NODE *recv, ID id)
{
value_expr(recv);
return NEW_CALL(recv, id, 0);
}
static NODE*
match_op_gen(struct parser_params *parser, NODE *node1, NODE *node2)
{
value_expr(node1);
value_expr(node2);
if (node1) {
switch (nd_type(node1)) {
case NODE_DREGX:
case NODE_DREGX_ONCE:
return NEW_MATCH2(node1, node2);
case NODE_LIT:
if (TYPE(node1->nd_lit) == T_REGEXP) {
return NEW_MATCH2(node1, node2);
}
}
}
if (node2) {
switch (nd_type(node2)) {
case NODE_DREGX:
case NODE_DREGX_ONCE:
return NEW_MATCH3(node2, node1);
case NODE_LIT:
if (TYPE(node2->nd_lit) == T_REGEXP) {
return NEW_MATCH3(node2, node1);
}
}
}
return NEW_CALL(node1, tMATCH, NEW_LIST(node2));
}
static NODE*
gettable_gen(struct parser_params *parser, ID id)
{
if (id == keyword_self) {
return NEW_SELF();
}
else if (id == keyword_nil) {
return NEW_NIL();
}
else if (id == keyword_true) {
return NEW_TRUE();
}
else if (id == keyword_false) {
return NEW_FALSE();
}
else if (id == keyword__FILE__) {
return NEW_STR(STR_NEW2(ruby_sourcefile));
}
else if (id == keyword__LINE__) {
return NEW_LIT(INT2FIX(ruby_sourceline));
}
else if (is_local_id(id)) {
if (dyna_in_block() && dvar_defined(id)) return NEW_DVAR(id);
if (local_id(id)) return NEW_LVAR(id);
/* method call without arguments */
return NEW_VCALL(id);
}
else if (is_global_id(id)) {
return NEW_GVAR(id);
}
else if (is_instance_id(id)) {
return NEW_IVAR(id);
}
else if (is_const_id(id)) {
return NEW_CONST(id);
}
else if (is_class_id(id)) {
return NEW_CVAR(id);
}
compile_error(PARSER_ARG "identifier %s is not valid to get", rb_id2name(id));
return 0;
}
static NODE*
assignable_gen(struct parser_params *parser, ID id, NODE *val)
{
if (!id) return 0;
if (id == keyword_self) {
yyerror("Can't change the value of self");
}
else if (id == keyword_nil) {
yyerror("Can't assign to nil");
}
else if (id == keyword_true) {
yyerror("Can't assign to true");
}
else if (id == keyword_false) {
yyerror("Can't assign to false");
}
else if (id == keyword__FILE__) {
yyerror("Can't assign to __FILE__");
}
else if (id == keyword__LINE__) {
yyerror("Can't assign to __LINE__");
}
else if (is_local_id(id)) {
if (dyna_in_block()) {
if (dvar_curr(id)) {
return NEW_DASGN_CURR(id, val);
}
else if (dvar_defined(id)) {
return NEW_DASGN(id, val);
}
else if (local_id(id)) {
return NEW_LASGN(id, val);
}
else{
dyna_var(id);
return NEW_DASGN_CURR(id, val);
}
}
else {
if (!local_id(id)) {
local_var(id);
}
return NEW_LASGN(id, val);
}
}
else if (is_global_id(id)) {
return NEW_GASGN(id, val);
}
else if (is_instance_id(id)) {
return NEW_IASGN(id, val);
}
else if (is_const_id(id)) {
if (in_def || in_single)
yyerror("dynamic constant assignment");
return NEW_CDECL(id, val, 0);
}
else if (is_class_id(id)) {
return NEW_CVASGN(id, val);
}
compile_error(PARSER_ARG "identifier %s is not valid to set", rb_id2name(id));
return 0;
}
static void
shadowing_lvar_gen(struct parser_params *parser, ID name)
{
static ID uscore;
if (!uscore) uscore = rb_intern("_");
if (uscore == name) return;
if (dyna_in_block()) {
if (dvar_curr(name)) {
yyerror("duplicated argument name");
}
else if (dvar_defined(name) || local_id(name)) {
rb_warningS("shadowing outer local variable - %s", rb_id2name(name));
vtable_add(lvtbl->vars, name);
}
}
else {
if (local_id(name)) {
yyerror("duplicated argument name");
}
}
}
static void
new_bv_gen(struct parser_params *parser, ID name)
{
if (!name) return;
if (!is_local_id(name)) {
compile_error(PARSER_ARG "invalid local variable - %s",
rb_id2name(name));
return;
}
shadowing_lvar(name);
dyna_var(name);
}
static NODE *
aryset_gen(struct parser_params *parser, NODE *recv, NODE *idx)
{
if (recv && nd_type(recv) == NODE_SELF)
recv = (NODE *)1;
return NEW_ATTRASGN(recv, tASET, idx);
}
static void
block_dup_check_gen(struct parser_params *parser, NODE *node1, NODE *node2)
{
if (node2 && node1 && nd_type(node1) == NODE_BLOCK_PASS) {
compile_error(PARSER_ARG "both block arg and actual block given");
}
}
ID
rb_id_attrset(ID id)
{
id &= ~ID_SCOPE_MASK;
id |= ID_ATTRSET;
return id;
}
static NODE *
attrset_gen(struct parser_params *parser, NODE *recv, ID id)
{
if (recv && nd_type(recv) == NODE_SELF)
recv = (NODE *)1;
return NEW_ATTRASGN(recv, rb_id_attrset(id), 0);
}
static void
rb_backref_error_gen(struct parser_params *parser, NODE *node)
{
switch (nd_type(node)) {
case NODE_NTH_REF:
compile_error(PARSER_ARG "Can't set variable $%ld", node->nd_nth);
break;
case NODE_BACK_REF:
compile_error(PARSER_ARG "Can't set variable $%c", (int)node->nd_nth);
break;
}
}
static NODE *
arg_concat_gen(struct parser_params *parser, NODE *node1, NODE *node2)
{
if (!node2) return node1;
if (nd_type(node1) == NODE_BLOCK_PASS) {
node1->nd_iter = arg_concat(node1->nd_iter, node2);
return node1;
}
return NEW_ARGSCAT(node1, node2);
}
static NODE *
arg_append_gen(struct parser_params *parser, NODE *node1, NODE *node2)
{
if (!node1) return NEW_LIST(node2);
switch (nd_type(node1)) {
case NODE_ARRAY:
return list_append(node1, node2);
case NODE_BLOCK_PASS:
node1->nd_head = arg_append(node1->nd_head, node2);
return node1;
default:
return NEW_ARGSPUSH(node1, node2);
}
}
#define arg_add(n1, n2) arg_add_gen(parser,n1,n2)
static NODE *
arg_add_gen(struct parser_params *parser, NODE *node1, NODE *node2)
{
if (!node1) return NEW_LIST(node2);
switch (nd_type(node1)) {
case NODE_ARRAY:
return list_append(node1, node2);
case NODE_BLOCK_PASS:
node1->nd_head = arg_add(node1->nd_head, node2);
return node1;
default:
return NEW_ARGSPUSH(node1, node2);
}
}
static NODE *
node_assign_gen(struct parser_params *parser, NODE *lhs, NODE *rhs)
{
if (!lhs) return 0;
switch (nd_type(lhs)) {
case NODE_GASGN:
case NODE_IASGN:
case NODE_IASGN2:
case NODE_LASGN:
case NODE_DASGN:
case NODE_DASGN_CURR:
case NODE_MASGN:
case NODE_CDECL:
case NODE_CVASGN:
lhs->nd_value = rhs;
break;
case NODE_ATTRASGN:
case NODE_CALL:
lhs->nd_args = arg_add(lhs->nd_args, rhs);
break;
default:
/* should not happen */
break;
}
return lhs;
}
static int
value_expr_gen(struct parser_params *parser, NODE *node)
{
if (!node) {
rb_warning0("empty expression");
}
while (node) {
switch (nd_type(node)) {
case NODE_DEFN:
case NODE_DEFS:
parser_warning(node, "void value expression");
return Qfalse;
case NODE_RETURN:
case NODE_BREAK:
case NODE_NEXT:
case NODE_REDO:
case NODE_RETRY:
yyerror("void value expression");
/* or "control never reach"? */
return Qfalse;
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:
if (!value_expr(node->nd_body)) return Qfalse;
node = node->nd_else;
break;
case NODE_AND:
case NODE_OR:
node = node->nd_2nd;
break;
default:
return Qtrue;
}
}
return Qtrue;
}
static void
void_expr_gen(struct parser_params *parser, NODE *node)
{
const char *useless = 0;
if (!RTEST(ruby_verbose)) return;
if (!node) return;
switch (nd_type(node)) {
case NODE_CALL:
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:
case NODE_DREGX_ONCE:
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) {
int line = ruby_sourceline;
ruby_sourceline = nd_line(node);
rb_warnS("useless use of %s in void context", useless);
ruby_sourceline = line;
}
}
static void
void_stmts_gen(struct parser_params *parser, NODE *node)
{
if (!RTEST(ruby_verbose)) return;
if (!node) return;
if (nd_type(node) != NODE_BLOCK) return;
for (;;) {
if (!node->nd_next) return;
void_expr0(node->nd_head);
node = node->nd_next;
}
}
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 void
reduce_nodes_gen(struct parser_params *parser, NODE **body)
{
NODE *node = *body;
if (!node) {
*body = NEW_NIL();
return;
}
#define subnodes(n1, n2) \
((!node->n1) ? (node->n2 ? (body = &node->n2, 1) : 0) : \
(!node->n2) ? (body = &node->n1, 1) : \
(reduce_nodes(&node->n1), body = &node->n2, 1))
while (node) {
switch (nd_type(node)) {
end:
case NODE_NIL:
*body = 0;
return;
case NODE_RETURN:
*body = node = node->nd_stts;
continue;
case NODE_BEGIN:
*body = node = node->nd_body;
continue;
case NODE_BLOCK:
body = &node->nd_end->nd_head;
break;
case NODE_IF:
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 (!subnodes(nd_head, nd_resq)) goto end;
break;
default:
return;
}
node = *body;
}
#undef subnodes
}
static int
assign_in_cond(struct parser_params *parser, NODE *node)
{
switch (nd_type(node)) {
case NODE_MASGN:
yyerror("multiple assignment in conditional");
return 1;
case NODE_LASGN:
case NODE_DASGN:
case NODE_GASGN:
case NODE_IASGN:
break;
default:
return 0;
}
switch (nd_type(node->nd_value)) {
case NODE_LIT:
case NODE_STR:
case NODE_NIL:
case NODE_TRUE:
case NODE_FALSE:
/* reports always */
parser_warn(node->nd_value, "found = in conditional, should be ==");
return 1;
case NODE_DSTR:
case NODE_XSTR:
case NODE_DXSTR:
case NODE_EVSTR:
case NODE_DREGX:
default:
break;
}
return 1;
}
static int
e_option_supplied(NODE *node)
{
if (strcmp(node->nd_file, "-e") == 0)
return Qtrue;
return Qfalse;
}
static void
warn_unless_e_option(NODE *node, const char *str)
{
if (!e_option_supplied(node)) parser_warn(node, str);
}
static void
warning_unless_e_option(NODE *node, const char *str)
{
if (!e_option_supplied(node)) parser_warning(node, str);
}
static NODE *cond0(struct parser_params*,NODE*);
static NODE*
range_op(struct parser_params *parser, NODE *node)
{
enum node_type type;
if (!e_option_supplied(node)) return node;
if (node == 0) return 0;
value_expr(node);
node = cond0(parser, node);
type = nd_type(node);
if (type == NODE_LIT && FIXNUM_P(node->nd_lit)) {
warn_unless_e_option(node, "integer literal in conditional range");
return NEW_CALL(node, tEQ, NEW_LIST(NEW_GVAR(rb_intern("$."))));
}
return node;
}
static int
literal_node(NODE *node)
{
if (!node) return 1; /* same as NODE_NIL */
switch (nd_type(node)) {
case NODE_LIT:
case NODE_STR:
case NODE_DSTR:
case NODE_EVSTR:
case NODE_DREGX:
case NODE_DREGX_ONCE:
case NODE_DSYM:
return 2;
case NODE_TRUE:
case NODE_FALSE:
case NODE_NIL:
return 1;
}
return 0;
}
static NODE*
cond0(struct parser_params *parser, NODE *node)
{
if (node == 0) return 0;
assign_in_cond(parser, node);
switch (nd_type(node)) {
case NODE_DSTR:
case NODE_EVSTR:
case NODE_STR:
rb_warn0("string literal in condition");
break;
case NODE_DREGX:
case NODE_DREGX_ONCE:
warning_unless_e_option(node, "regex literal in condition");
return NEW_MATCH2(node, NEW_GVAR(rb_intern("$_")));
case NODE_AND:
case NODE_OR:
node->nd_1st = cond0(parser, node->nd_1st);
node->nd_2nd = cond0(parser, node->nd_2nd);
break;
case NODE_DOT2:
case NODE_DOT3:
node->nd_beg = range_op(parser, node->nd_beg);
node->nd_end = range_op(parser, node->nd_end);
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);
if (!e_option_supplied(node)) {
int b = literal_node(node->nd_beg);
int e = literal_node(node->nd_end);
if ((b == 1 && e == 1) || (b + e >= 2 && RTEST(ruby_verbose))) {
parser_warn(node, "range literal in condition");
}
}
break;
case NODE_DSYM:
parser_warning(node, "literal in condition");
break;
case NODE_LIT:
if (TYPE(node->nd_lit) == T_REGEXP) {
warn_unless_e_option(node, "regex literal in condition");
nd_set_type(node, NODE_MATCH);
}
else {
parser_warning(node, "literal in condition");
}
default:
break;
}
return node;
}
static NODE*
cond_gen(struct parser_params *parser, NODE *node)
{
if (node == 0) return 0;
return cond0(parser, node);
}
static NODE*
logop_gen(struct parser_params *parser, enum node_type type, NODE *left, NODE *right)
{
value_expr(left);
if (left && nd_type(left) == type) {
NODE *node = left, *second;
while ((second = node->nd_2nd) != 0 && nd_type(second) == type) {
node = second;
}
node->nd_2nd = NEW_NODE(type, second, right, 0);
return left;
}
return NEW_NODE(type, left, right, 0);
}
static void
no_blockarg(struct parser_params *parser, NODE *node)
{
if (node && nd_type(node) == NODE_BLOCK_PASS) {
compile_error(PARSER_ARG "block argument should not be given");
}
}
static NODE *
ret_args_gen(struct parser_params *parser, NODE *node)
{
if (node) {
no_blockarg(parser, node);
if (nd_type(node) == NODE_ARRAY) {
if (node->nd_next == 0) {
node = node->nd_head;
}
else {
nd_set_type(node, NODE_VALUES);
}
}
}
return node;
}
static NODE *
new_yield_gen(struct parser_params *parser, NODE *node)
{
long state = Qtrue;
if (node) {
no_blockarg(parser, node);
if (node && nd_type(node) == NODE_SPLAT) {
state = Qtrue;
}
}
else {
state = Qfalse;
}
return NEW_YIELD(node, state);
}
static NODE*
negate_lit(NODE *node)
{
switch (TYPE(node->nd_lit)) {
case T_FIXNUM:
node->nd_lit = LONG2FIX(-FIX2LONG(node->nd_lit));
break;
case T_BIGNUM:
node->nd_lit = rb_funcall(node->nd_lit,tUMINUS,0,0);
break;
case T_FLOAT:
RFLOAT(node->nd_lit)->float_value = -RFLOAT_VALUE(node->nd_lit);
break;
default:
break;
}
return node;
}
static NODE *
arg_blk_pass(NODE *node1, NODE *node2)
{
if (node2) {
node2->nd_head = node1;
return node2;
}
return node1;
}
static NODE*
new_args_gen(struct parser_params *parser, NODE *m, NODE *o, ID r, NODE *p, ID b)
{
int saved_line = ruby_sourceline;
NODE *node;
NODE *i1, *i2 = 0;
node = NEW_ARGS(m ? m->nd_plen : 0, o);
i1 = m ? m->nd_next : 0;
node->nd_next = NEW_ARGS_AUX(r, b);
if (p) {
i2 = p->nd_next;
node->nd_next->nd_next = NEW_ARGS_AUX(p->nd_pid, p->nd_plen);
}
else if (i1) {
node->nd_next->nd_next = NEW_ARGS_AUX(0, 0);
}
if (i1 || i2) {
node->nd_next->nd_next->nd_next = NEW_NODE(NODE_AND, i1, i2, 0);
}
ruby_sourceline = saved_line;
return node;
}
static void
local_push_gen(struct parser_params *parser, int inherit_dvars)
{
struct local_vars *local;
local = ALLOC(struct local_vars);
local->prev = lvtbl;
local->args = vtable_alloc(0);
local->vars = vtable_alloc(inherit_dvars ? DVARS_INHERIT : DVARS_TOPSCOPE);
lvtbl = local;
}
static void
local_pop_gen(struct parser_params *parser)
{
struct local_vars *local = lvtbl->prev;
vtable_free(lvtbl->args);
vtable_free(lvtbl->vars);
xfree(lvtbl);
lvtbl = local;
}
static ID*
vtable_tblcpy(ID *buf, const struct vtable *src)
{
int i, cnt = vtable_size(src);
if (cnt > 0) {
buf[0] = cnt;
for (i = 0; i < cnt; i++) {
buf[i] = src->tbl[i];
}
return buf;
}
return 0;
}
static ID*
local_tbl_gen(struct parser_params *parser)
{
int cnt = vtable_size(lvtbl->args) + vtable_size(lvtbl->vars);
ID *buf;
if (cnt <= 0) return 0;
buf = ALLOC_N(ID, cnt + 1);
vtable_tblcpy(buf+1, lvtbl->args);
vtable_tblcpy(buf+vtable_size(lvtbl->args)+1, lvtbl->vars);
buf[0] = cnt;
return buf;
}
#include "debug.h"
static int
arg_var_gen(struct parser_params *parser, ID id)
{
vtable_add(lvtbl->args, id);
return vtable_size(lvtbl->args) - 1;
}
static int
local_var_gen(struct parser_params *parser, ID id)
{
vtable_add(lvtbl->vars, id);
return vtable_size(lvtbl->vars) - 1;
}
static int
local_id_gen(struct parser_params *parser, ID id)
{
struct vtable *vars, *args;
vars = lvtbl->vars;
args = lvtbl->args;
while (vars && POINTER_P(vars->prev)) {
vars = vars->prev;
args = args->prev;
}
if (vars && vars->prev == DVARS_INHERIT) {
return rb_local_defined(id);
}
else {
return (vtable_included(args, id) ||
vtable_included(vars, id));
}
}
static void
dyna_push_gen(struct parser_params *parser)
{
lvtbl->args = vtable_alloc(lvtbl->args);
lvtbl->vars = vtable_alloc(lvtbl->vars);
}
static void
dyna_pop_gen(struct parser_params *parser)
{
struct vtable *tmp;
tmp = lvtbl->args;
lvtbl->args = lvtbl->args->prev;
vtable_free(tmp);
tmp = lvtbl->vars;
lvtbl->vars = lvtbl->vars->prev;
vtable_free(tmp);
}
static int
dyna_in_block_gen(struct parser_params *parser)
{
return POINTER_P(lvtbl->vars) && lvtbl->vars->prev != DVARS_TOPSCOPE;
}
static int
dvar_defined_gen(struct parser_params *parser, ID id)
{
struct vtable *vars, *args;
args = lvtbl->args;
vars = lvtbl->vars;
while (POINTER_P(vars)) {
if (vtable_included(args, id)) {
return 1;
}
if (vtable_included(vars, id)) {
return 1;
}
args = args->prev;
vars = vars->prev;
}
if (vars == DVARS_INHERIT) {
return rb_dvar_defined(id);
}
return 0;
}
static int
dvar_curr_gen(struct parser_params *parser, ID id)
{
return (vtable_included(lvtbl->args, id) ||
vtable_included(lvtbl->vars, id));
}
VALUE rb_reg_compile(VALUE str, int options);
VALUE rb_reg_check_preprocess(VALUE);
static void
reg_fragment_setenc_gen(struct parser_params* parser, 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) && ENCODING_GET(str) &&
rb_enc_str_coderange(str) != ENC_CODERANGE_7BIT) {
compile_error(PARSER_ARG
"regexp encoding option '%c' differs from source encoding '%s'",
c, rb_enc_name(rb_enc_get(str)));
}
ENCODING_SET(str, idx);
}
}
static void
reg_fragment_check_gen(struct parser_params* parser, VALUE str, int options)
{
VALUE err;
reg_fragment_setenc_gen(parser, str, options);
err = rb_reg_check_preprocess(str);
if (err != Qnil) {
err = rb_obj_as_string(err);
compile_error(PARSER_ARG "%s", RSTRING_PTR(err));
RB_GC_GUARD(err);
}
}
static VALUE
reg_compile_gen(struct parser_params* parser, VALUE str, int options)
{
VALUE re;
reg_fragment_setenc(str, options);
re = rb_reg_compile(str, options & RE_OPTION_MASK);
if (NIL_P(re)) {
RB_GC_GUARD(re) = rb_obj_as_string(rb_errinfo());
compile_error(PARSER_ARG "%s", RSTRING_PTR(re));
return Qnil;
}
return re;
}
void
rb_gc_mark_parser(void)
{
}
NODE*
rb_parser_append_print(VALUE vparser, NODE *node)
{
NODE *prelude = 0;
NODE *scope = node;
struct parser_params *parser;
if (!node) return node;
Data_Get_Struct(vparser, struct parser_params, parser);
node = node->nd_body;
if (nd_type(node) == NODE_PRELUDE) {
prelude = node;
node = node->nd_body;
}
node = block_append(node,
NEW_FCALL(rb_intern("print"),
NEW_ARRAY(NEW_GVAR(rb_intern("$_")))));
if (prelude) {
prelude->nd_body = node;
scope->nd_body = prelude;
}
else {
scope->nd_body = node;
}
return scope;
}
NODE *
rb_parser_while_loop(VALUE vparser, NODE *node, int chop, int split)
{
NODE *prelude = 0;
NODE *scope = node;
struct parser_params *parser;
if (!node) return node;
Data_Get_Struct(vparser, struct parser_params, parser);
node = node->nd_body;
if (nd_type(node) == NODE_PRELUDE) {
prelude = node;
node = node->nd_body;
}
if (split) {
node = block_append(NEW_GASGN(rb_intern("$F"),
NEW_CALL(NEW_GVAR(rb_intern("$_")),
rb_intern("split"), 0)),
node);
}
if (chop) {
node = block_append(NEW_CALL(NEW_GVAR(rb_intern("$_")),
rb_intern("chop!"), 0), node);
}
node = NEW_OPT_N(node);
if (prelude) {
prelude->nd_body = node;
scope->nd_body = prelude;
}
else {
scope->nd_body = node;
}
return scope;
}
static const struct {
ID token;
const char *name;
} op_tbl[] = {
{tDOT2, ".."},
{tDOT3, "..."},
{'+', "+"},
{'-', "-"},
{'+', "+(binary)"},
{'-', "-(binary)"},
{'*', "*"},
{'/', "/"},
{'%', "%"},
{tPOW, "**"},
{tUPLUS, "+@"},
{tUMINUS, "-@"},
{tUPLUS, "+(unary)"},
{tUMINUS, "-(unary)"},
{'|', "|"},
{'^', "^"},
{'&', "&"},
{'!', "!"},
{tCMP, "<=>"},
{'>', ">"},
{tGEQ, ">="},
{'<', "<"},
{tLEQ, "<="},
{tEQ, "=="},
{tEQQ, "==="},
{tNEQ, "!="},
{tMATCH, "=~"},
{tNMATCH, "!~"},
{'~', "~"},
{'~', "~(unary)"},
{'~', "~@"},
{'!', "!"},
{'!', "!(unary)"},
{'!', "!@"},
{tAREF, "[]"},
{tASET, "[]="},
{tLSHFT, "<<"},
{tRSHFT, ">>"},
{tCOLON2, "::"},
{'`', "`"},
{0, 0}
};
static struct symbols {
ID last_id;
st_table *sym_id;
st_table *id_str;
st_table *ivar2_id;
st_table *id_ivar2;
VALUE op_sym[tLAST_TOKEN];
} global_symbols = {tLAST_TOKEN >> ID_SCOPE_SHIFT};
static const struct st_hash_type symhash = {
rb_str_cmp,
rb_str_hash,
};
struct ivar2_key {
ID id;
VALUE klass;
};
static int
ivar2_cmp(struct ivar2_key *key1, struct ivar2_key *key2)
{
if (key1->id == key2->id && key1->klass == key2->klass) {
return 0;
}
return 1;
}
static int
ivar2_hash(struct ivar2_key *key)
{
return (key->id << 8) ^ (key->klass >> 2);
}
static const struct st_hash_type ivar2_hash_type = {
ivar2_cmp,
ivar2_hash,
};
void
Init_sym(void)
{
global_symbols.sym_id = st_init_table_with_size(&symhash, 1000);
global_symbols.id_str = st_init_numtable_with_size(1000);
global_symbols.ivar2_id = st_init_table_with_size(&ivar2_hash_type, 1000);
global_symbols.id_ivar2 = st_init_numtable_with_size(1000);
rb_intern2("", 0);
}
void
rb_gc_mark_symbols(void)
{
rb_mark_tbl(global_symbols.id_str);
rb_gc_mark_locations(global_symbols.op_sym,
global_symbols.op_sym + tLAST_TOKEN);
}
static ID
internal_id_gen(struct parser_params *parser)
{
ID id = (ID)vtable_size(lvtbl->args) + (ID)vtable_size(lvtbl->vars);
id += ((tLAST_TOKEN - ID_INTERNAL) >> ID_SCOPE_SHIFT) + 1;
return ID_INTERNAL | (id << ID_SCOPE_SHIFT);
}
static int
is_special_global_name(const char *m, const char *e, rb_encoding *enc)
{
int mb = 0;
if (m >= e) return 0;
switch (*m) {
case '~': case '*': case '$': case '?': case '!': case '@':
case '/': case '\\': case ';': case ',': case '.': case '=':
case ':': case '<': case '>': case '\"':
case '&': case '`': case '\'': case '+':
case '0':
++m;
break;
case '-':
++m;
if (m < e && is_identchar(m, e, enc)) {
if (!ISASCII(*m)) mb = 1;
m += rb_enc_mbclen(m, e, enc);
}
break;
default:
if (!rb_enc_isdigit(*m, enc)) return 0;
do {
if (!ISASCII(*m)) mb = 1;
++m;
} while (rb_enc_isdigit(*m, enc));
}
return m == e ? mb + 1 : 0;
}
int
rb_symname_p(const char *name)
{
return rb_enc_symname_p(name, rb_enc_from_index(0));
}
int
rb_enc_symname_p(const char *name, rb_encoding *enc)
{
const char *m = name;
const char *e = m + strlen(m);
int localid = Qfalse;
if (!m) return Qfalse;
switch (*m) {
case '\0':
return Qfalse;
case '$':
if (is_special_global_name(++m, e, enc)) return Qtrue;
goto id;
case '@':
if (*++m == '@') ++m;
goto id;
case '<':
switch (*++m) {
case '<': ++m; break;
case '=': if (*++m == '>') ++m; break;
default: break;
}
break;
case '>':
switch (*++m) {
case '>': case '=': ++m; break;
}
break;
case '=':
switch (*++m) {
case '~': ++m; break;
case '=': if (*++m == '=') ++m; break;
default: return Qfalse;
}
break;
case '*':
if (*++m == '*') ++m;
break;
case '+': case '-':
if (*++m == '@') ++m;
break;
case '|': case '^': case '&': case '/': case '%': case '~': case '`':
++m;
break;
case '[':
if (*++m != ']') return Qfalse;
if (*++m == '=') ++m;
break;
default:
localid = !rb_enc_isupper(*m, enc);
id:
if (m >= e || (*m != '_' && !rb_enc_isalpha(*m, enc) && ISASCII(*m)))
return Qfalse;
while (m < e && is_identchar(m, e, enc)) m += rb_enc_mbclen(m, e, enc);
if (localid) {
switch (*m) {
case '!': case '?': case '=': ++m;
}
}
break;
}
return *m ? Qfalse : Qtrue;
}
ID
rb_intern3(const char *name, long len, rb_encoding *enc)
{
const char *m = name;
const char *e = m + len;
VALUE str;
ID id;
int last;
int mb;
struct RString fake_str;
fake_str.basic.flags = T_STRING|RSTRING_NOEMBED|FL_FREEZE;
fake_str.basic.klass = rb_cString;
fake_str.as.heap.len = len;
fake_str.as.heap.ptr = (char *)name;
fake_str.as.heap.aux.capa = len;
str = (VALUE)&fake_str;
rb_enc_associate(str, enc);
if (st_lookup(global_symbols.sym_id, str, (st_data_t *)&id))
return id;
last = len-1;
id = 0;
switch (*m) {
case '$':
id |= ID_GLOBAL;
if ((mb = is_special_global_name(++m, e, enc)) != 0) {
if (!--mb) enc = rb_enc_from_index(0);
goto new_id;
}
break;
case '@':
if (m[1] == '@') {
m++;
id |= ID_CLASS;
}
else {
id |= ID_INSTANCE;
}
m++;
break;
default:
if (m[0] != '_' && rb_enc_isascii((unsigned char)m[0], enc)
&& !rb_enc_isalnum(m[0], enc)) {
/* operators */
int i;
for (i=0; op_tbl[i].token; i++) {
if (*op_tbl[i].name == *m &&
strcmp(op_tbl[i].name, m) == 0) {
id = op_tbl[i].token;
goto id_register;
}
}
}
if (m[last] == '=') {
/* attribute assignment */
id = rb_intern3(name, last, enc);
if (id > tLAST_TOKEN && !is_attrset_id(id)) {
enc = rb_enc_get(rb_id2str(id));
id = rb_id_attrset(id);
goto id_register;
}
id = ID_ATTRSET;
}
else if (rb_enc_isupper(m[0], enc)) {
id = ID_CONST;
}
else {
id = ID_LOCAL;
}
break;
}
mb = 0;
if (!rb_enc_isdigit(*m, enc)) {
while (m <= name + last && is_identchar(m, e, enc)) {
if (!ISASCII(*m)) mb = 1;
m += rb_enc_mbclen(m, e, enc);
}
}
if (m - name < len) id = ID_JUNK;
if (enc != rb_default_encoding()) {
/*
* this clause makes sense only when called from other than
* rb_intern_str() taking care of code-range.
*/
if (!mb) {
for (; m <= name + len; ++m) {
if (!ISASCII(*m)) goto mbstr;
}
enc = rb_default_encoding();
}
mbstr:;
}
new_id:
id |= ++global_symbols.last_id << ID_SCOPE_SHIFT;
id_register:
str = rb_enc_str_new(name, len, enc);
OBJ_FREEZE(str);
st_add_direct(global_symbols.sym_id, (st_data_t)str, id);
st_add_direct(global_symbols.id_str, id, (st_data_t)str);
return id;
}
ID
rb_intern2(const char *name, long len)
{
return rb_intern3(name, len, rb_enc_from_index(0));
}
ID
rb_intern(const char *name)
{
return rb_intern2(name, strlen(name));
}
ID
rb_intern_str(VALUE str)
{
int idx = 0;
ID id;
if (rb_enc_str_coderange(str) != ENC_CODERANGE_7BIT) {
idx = rb_enc_get_index(str);
}
id = rb_intern3(RSTRING_PTR(str), RSTRING_LEN(str),
rb_enc_from_index(idx));
RB_GC_GUARD(str);
return id;
}
VALUE
rb_id2str(ID id)
{
st_data_t data;
if (id < tLAST_TOKEN) {
int i = 0;
for (i=0; op_tbl[i].token; i++) {
if (op_tbl[i].token == id) {
VALUE str = global_symbols.op_sym[i];
if (!str) {
str = rb_str_new2(op_tbl[i].name);
OBJ_FREEZE(str);
global_symbols.op_sym[i] = str;
}
return str;
}
}
}
if (st_lookup(global_symbols.id_str, id, &data))
return (VALUE)data;
if (is_attrset_id(id)) {
ID id2 = (id & ~ID_SCOPE_MASK) | ID_LOCAL;
VALUE str;
while (!(str = rb_id2str(id2))) {
if (!is_local_id(id2)) return 0;
id2 = (id & ~ID_SCOPE_MASK) | ID_CONST;
}
str = rb_str_dup(str);
rb_str_cat(str, "=", 1);
rb_intern_str(str);
if (st_lookup(global_symbols.id_str, id, &data))
return (VALUE)data;
}
return 0;
}
const char *
rb_id2name(ID id)
{
VALUE str = rb_id2str(id);
if (!str) return 0;
return RSTRING_PTR(str);
}
static int
symbols_i(VALUE sym, ID value, VALUE ary)
{
rb_ary_push(ary, ID2SYM(value));
return ST_CONTINUE;
}
/*
* call-seq:
* Symbol.all_symbols => array
*
* Returns an array of all the symbols currently in Ruby's symbol
* table.
*
* Symbol.all_symbols.size #=> 903
* Symbol.all_symbols[1,20] #=> [:floor, :ARGV, :Binding, :symlink,
* :chown, :EOFError, :$;, :String,
* :LOCK_SH, :"setuid?", :$<,
* :default_proc, :compact, :extend,
* :Tms, :getwd, :$=, :ThreadGroup,
* :wait2, :$>]
*/
VALUE
rb_sym_all_symbols(void)
{
VALUE ary = rb_ary_new2(global_symbols.sym_id->num_entries);
st_foreach(global_symbols.sym_id, symbols_i, ary);
return ary;
}
int
rb_is_const_id(ID id)
{
if (is_const_id(id)) return Qtrue;
return Qfalse;
}
int
rb_is_class_id(ID id)
{
if (is_class_id(id)) return Qtrue;
return Qfalse;
}
int
rb_is_instance_id(ID id)
{
if (is_instance_id(id)) return Qtrue;
return Qfalse;
}
int
rb_is_local_id(ID id)
{
if (is_local_id(id)) return Qtrue;
return Qfalse;
}
int
rb_is_junk_id(ID id)
{
if (is_junk_id(id)) return Qtrue;
return Qfalse;
}
#endif /* !RIPPER */
static void
parser_initialize(struct parser_params *parser)
{
parser->eofp = Qfalse;
parser->parser_lex_strterm = 0;
parser->parser_cond_stack = 0;
parser->parser_cmdarg_stack = 0;
parser->parser_class_nest = 0;
parser->parser_paren_nest = 0;
parser->parser_lpar_beg = 0;
parser->parser_in_single = 0;
parser->parser_in_def = 0;
parser->parser_in_defined = 0;
parser->parser_compile_for_eval = 0;
parser->parser_cur_mid = 0;
parser->parser_tokenbuf = NULL;
parser->parser_tokidx = 0;
parser->parser_toksiz = 0;
parser->parser_heredoc_end = 0;
parser->parser_command_start = Qtrue;
parser->parser_lex_pbeg = 0;
parser->parser_lex_p = 0;
parser->parser_lex_pend = 0;
parser->parser_lvtbl = 0;
parser->parser_ruby__end__seen = 0;
#ifndef RIPPER
parser->parser_ruby_sourcefile = 0;
parser->parser_eval_tree_begin = 0;
parser->parser_eval_tree = 0;
#else
parser->parser_ruby_sourcefile = Qnil;
parser->delayed = Qnil;
parser->result = Qnil;
parser->parsing_thread = Qnil;
parser->toplevel_p = Qtrue;
#endif
#ifdef YYMALLOC
parser->heap = NULL;
#endif
parser->enc = rb_enc_from_index(0);
}
extern void rb_mark_source_filename(char *);
static void
parser_mark(void *ptr)
{
struct parser_params *p = (struct parser_params*)ptr;
rb_gc_mark((VALUE)p->parser_lex_strterm);
rb_gc_mark(p->parser_lex_input);
rb_gc_mark(p->parser_lex_lastline);
rb_gc_mark(p->parser_lex_nextline);
#ifndef RIPPER
rb_gc_mark((VALUE)p->parser_eval_tree_begin) ;
rb_gc_mark((VALUE)p->parser_eval_tree) ;
rb_gc_mark(p->debug_lines);
rb_mark_source_filename(p->parser_ruby_sourcefile);
#else
rb_gc_mark(p->parser_ruby_sourcefile);
rb_gc_mark(p->delayed);
rb_gc_mark(p->value);
rb_gc_mark(p->result);
rb_gc_mark(p->parsing_thread);
#endif
#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->parser_tokenbuf) {
xfree(p->parser_tokenbuf);
}
for (local = p->parser_lvtbl; local; local = prev) {
if (local->vars) xfree(local->vars);
prev = local->prev;
xfree(local);
}
xfree(p);
}
VALUE rb_parser_get_yydebug(VALUE);
VALUE rb_parser_set_yydebug(VALUE, VALUE);
#ifndef RIPPER
static struct parser_params *
parser_new(void)
{
struct parser_params *p;
p = ALLOC_N(struct parser_params, 1);
MEMZERO(p, struct parser_params, 1);
parser_initialize(p);
return p;
}
VALUE
rb_parser_new(void)
{
struct parser_params *p = parser_new();
return Data_Wrap_Struct(0, parser_mark, parser_free, p);
}
/*
* call-seq:
* ripper#end_seen? -> Boolean
*
* Return if parsed source ended by +\_\_END\_\_+.
* This number starts from 1.
*/
VALUE
rb_parser_end_seen_p(VALUE vparser)
{
struct parser_params *parser;
Data_Get_Struct(vparser, struct parser_params, parser);
return ruby__end__seen ? Qtrue : Qfalse;
}
/*
* call-seq:
* ripper#encoding -> encoding
*
* Return encoding of the source.
*/
VALUE
rb_parser_encoding(VALUE vparser)
{
struct parser_params *parser;
Data_Get_Struct(vparser, struct parser_params, parser);
return rb_enc_from_encoding(parser->enc);
}
/*
* call-seq:
* ripper.yydebug -> true or false
*
* Get yydebug.
*/
VALUE
rb_parser_get_yydebug(VALUE self)
{
struct parser_params *parser;
Data_Get_Struct(self, struct parser_params, parser);
return yydebug ? Qtrue : Qfalse;
}
/*
* call-seq:
* ripper.yydebug = flag
*
* Set yydebug.
*/
VALUE
rb_parser_set_yydebug(VALUE self, VALUE flag)
{
struct parser_params *parser;
Data_Get_Struct(self, struct parser_params, parser);
yydebug = RTEST(flag);
return flag;
}
#ifdef YYMALLOC
#define HEAPCNT(n, size) ((n) * (size) / sizeof(YYSTYPE))
#define NEWHEAP() rb_node_newnode(NODE_ALLOCA, 0, (VALUE)parser->heap, 0)
#define ADD2HEAP(n, c, p) ((parser->heap = (n))->u1.node = (p), \
(n)->u3.cnt = (c), (p))
void *
rb_parser_malloc(struct parser_params *parser, size_t size)
{
size_t cnt = HEAPCNT(1, size);
NODE *n = NEWHEAP();
void *ptr = xmalloc(size);
return ADD2HEAP(n, cnt, ptr);
}
void *
rb_parser_calloc(struct parser_params *parser, size_t nelem, size_t size)
{
size_t cnt = HEAPCNT(nelem, size);
NODE *n = NEWHEAP();
void *ptr = xcalloc(nelem, size);
return ADD2HEAP(n, cnt, ptr);
}
void *
rb_parser_realloc(struct parser_params *parser, void *ptr, size_t size)
{
NODE *n;
size_t cnt = HEAPCNT(1, size);
if (ptr && (n = parser->heap) != NULL) {
do {
if (n->u1.node == ptr) {
n->u1.node = ptr = xrealloc(ptr, size);
if (n->u3.cnt) n->u3.cnt = cnt;
return ptr;
}
} while ((n = n->u2.node) != NULL);
}
n = NEWHEAP();
ptr = xrealloc(ptr, size);
return ADD2HEAP(n, cnt, ptr);
}
void
rb_parser_free(struct parser_params *parser, void *ptr)
{
NODE **prev = &parser->heap, *n;
while ((n = *prev) != NULL) {
if (n->u1.node == ptr) {
*prev = n->u2.node;
rb_gc_force_recycle((VALUE)n);
break;
}
prev = &n->u2.node;
}
xfree(ptr);
}
#endif
#endif
#ifdef RIPPER
#ifdef RIPPER_DEBUG
extern int rb_is_pointer_to_heap(VALUE);
/* :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;
if (!rb_is_pointer_to_heap(x))
rb_raise(rb_eArgError, "invalid pointer: %p", x);
switch (TYPE(x)) {
case T_STRING:
case T_OBJECT:
case T_ARRAY:
case T_BIGNUM:
case T_FLOAT:
return x;
case T_NODE:
rb_raise(rb_eArgError, "NODE given: %p", x);
default:
rb_raise(rb_eArgError, "wrong type of ruby object: %p (%s)",
x, rb_obj_classname(x));
}
return x;
}
#endif
#define validate(x)
static VALUE
ripper_dispatch0(struct parser_params *parser, ID mid)
{
return rb_funcall(parser->value, mid, 0);
}
static VALUE
ripper_dispatch1(struct parser_params *parser, ID mid, VALUE a)
{
validate(a);
return rb_funcall(parser->value, mid, 1, a);
}
static VALUE
ripper_dispatch2(struct parser_params *parser, ID mid, VALUE a, VALUE b)
{
validate(a);
validate(b);
return rb_funcall(parser->value, mid, 2, a, b);
}
static VALUE
ripper_dispatch3(struct parser_params *parser, ID mid, VALUE a, VALUE b, VALUE c)
{
validate(a);
validate(b);
validate(c);
return rb_funcall(parser->value, mid, 3, a, b, c);
}
static VALUE
ripper_dispatch4(struct parser_params *parser, ID mid, VALUE a, VALUE b, VALUE c, VALUE d)
{
validate(a);
validate(b);
validate(c);
validate(d);
return rb_funcall(parser->value, mid, 4, a, b, c, d);
}
static VALUE
ripper_dispatch5(struct parser_params *parser, 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(parser->value, mid, 5, a, b, c, d, e);
}
static const struct kw_assoc {
ID id;
const char *name;
} keyword_to_name[] = {
{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"},
{keyword_do_block, "do"},
{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_unless, "unless"},
{modifier_while, "while"},
{modifier_until, "until"},
{modifier_rescue, "rescue"},
{keyword_alias, "alias"},
{keyword_defined, "defined?"},
{keyword_BEGIN, "BEGIN"},
{keyword_END, "END"},
{keyword__LINE__, "__LINE__"},
{keyword__FILE__, "__FILE__"},
{0, NULL}
};
static const char*
keyword_id_to_str(ID id)
{
const struct kw_assoc *a;
for (a = keyword_to_name; a->id; a++) {
if (a->id == id)
return a->name;
}
return NULL;
}
static VALUE
ripper_id2sym(ID id)
{
const char *name;
char buf[8];
if (id <= 256) {
buf[0] = id;
buf[1] = '\0';
return ID2SYM(rb_intern(buf));
}
if ((name = keyword_id_to_str(id))) {
return ID2SYM(rb_intern(name));
}
switch (id) {
case tOROP:
name = "||";
break;
case tANDOP:
name = "&&";
break;
default:
name = rb_id2name(id);
if (!name) {
rb_bug("cannot convert ID to string: %ld", (unsigned long)id);
}
break;
}
return ID2SYM(rb_intern(name));
}
static VALUE
ripper_intern(const char *s)
{
return ID2SYM(rb_intern(s));
}
static void
ripper_compile_error(struct parser_params *parser, const char *fmt, ...)
{
VALUE str;
va_list args;
va_start(args, fmt);
str = rb_vsprintf(fmt, args);
va_end(args);
rb_funcall(parser->value, rb_intern("compile_error"), 1, str);
}
static void
ripper_warn0(struct parser_params *parser, const char *fmt)
{
rb_funcall(parser->value, rb_intern("warn"), 1, STR_NEW2(fmt));
}
static void
ripper_warnI(struct parser_params *parser, const char *fmt, int a)
{
rb_funcall(parser->value, rb_intern("warn"), 2,
STR_NEW2(fmt), INT2NUM(a));
}
static void
ripper_warnS(struct parser_params *parser, const char *fmt, const char *str)
{
rb_funcall(parser->value, rb_intern("warn"), 2,
STR_NEW2(fmt), STR_NEW2(str));
}
static void
ripper_warning0(struct parser_params *parser, const char *fmt)
{
rb_funcall(parser->value, rb_intern("warning"), 1, STR_NEW2(fmt));
}
#if 0 /* unused in ripper right now */
static void
ripper_warningS(struct parser_params *parser, const char *fmt, const char *str)
{
rb_funcall(parser->value, rb_intern("warning"), 2,
STR_NEW2(fmt), STR_NEW2(str));
}
#endif
static VALUE
ripper_lex_get_generic(struct parser_params *parser, VALUE src)
{
return rb_funcall(src, ripper_id_gets, 0);
}
static VALUE
ripper_s_allocate(VALUE klass)
{
struct parser_params *p;
VALUE self;
p = ALLOC_N(struct parser_params, 1);
MEMZERO(p, struct parser_params, 1);
self = Data_Wrap_Struct(klass, parser_mark, parser_free, p);
p->value = self;
return self;
}
#define ripper_initialized_p(r) ((r)->parser_lex_input != 0)
/*
* call-seq:
* Ripper.new(src, filename="(ripper)", lineno=1) -> ripper
*
* Create a new Ripper object.
* _src_ must be a String, a 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 *parser;
VALUE src, fname, lineno;
Data_Get_Struct(self, struct parser_params, parser);
rb_scan_args(argc, argv, "12", &src, &fname, &lineno);
if (rb_obj_respond_to(src, ripper_id_gets, 0)) {
parser->parser_lex_gets = ripper_lex_get_generic;
}
else {
StringValue(src);
parser->parser_lex_gets = lex_get_str;
}
parser->parser_lex_input = src;
parser->eofp = Qfalse;
if (NIL_P(fname)) {
fname = STR_NEW2("(ripper)");
}
else {
StringValue(fname);
}
parser_initialize(parser);
parser->parser_ruby_sourcefile = fname;
parser->parser_ruby_sourceline = NIL_P(lineno) ? 0 : NUM2INT(lineno) - 1;
return Qnil;
}
extern VALUE rb_thread_pass(void);
struct ripper_args {
struct parser_params *parser;
int argc;
VALUE *argv;
};
static VALUE
ripper_parse0(VALUE parser_v)
{
struct parser_params *parser;
Data_Get_Struct(parser_v, struct parser_params, parser);
parser_prepare(parser);
ripper_yyparse((void*)parser);
return parser->result;
}
static VALUE
ripper_ensure(VALUE parser_v)
{
struct parser_params *parser;
Data_Get_Struct(parser_v, struct parser_params, parser);
parser->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 *parser;
Data_Get_Struct(self, struct parser_params, parser);
if (!ripper_initialized_p(parser)) {
rb_raise(rb_eArgError, "method called for uninitialized object");
}
if (!NIL_P(parser->parsing_thread)) {
if (parser->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");
}
parser->parsing_thread = rb_thread_current();
rb_ensure(ripper_parse0, self, ripper_ensure, self);
return parser->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 *parser;
long col;
Data_Get_Struct(self, struct parser_params, parser);
if (!ripper_initialized_p(parser)) {
rb_raise(rb_eArgError, "method called for uninitialized object");
}
if (NIL_P(parser->parsing_thread)) return Qnil;
col = parser->tokp - parser->parser_lex_pbeg;
return LONG2NUM(col);
}
/*
* 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 *parser;
Data_Get_Struct(self, struct parser_params, parser);
if (!ripper_initialized_p(parser)) {
rb_raise(rb_eArgError, "method called for uninitialized object");
}
if (NIL_P(parser->parsing_thread)) return Qnil;
return INT2NUM(parser->parser_ruby_sourceline);
}
#ifdef RIPPER_DEBUG
/* :nodoc: */
static VALUE
ripper_assert_Qundef(VALUE self, VALUE obj, VALUE msg)
{
StringValue(msg);
if (obj == Qundef) {
rb_raise(rb_eArgError, "%s", RSTRING_PTR(msg));
}
return Qnil;
}
/* :nodoc: */
static VALUE
ripper_value(VALUE self, VALUE obj)
{
return ULONG2NUM(obj);
}
#endif
void
Init_ripper(void)
{
VALUE Ripper;
Ripper = rb_define_class("Ripper", rb_cObject);
rb_define_const(Ripper, "Version", rb_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, "lineno", ripper_lineno, 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);
#ifdef RIPPER_DEBUG
rb_define_method(rb_mKernel, "assert_Qundef", ripper_assert_Qundef, 2);
rb_define_method(rb_mKernel, "rawVALUE", ripper_value, 1);
rb_define_method(rb_mKernel, "validate_object", ripper_validate_object, 1);
#endif
ripper_id_gets = rb_intern("gets");
ripper_init_eventids1(Ripper);
ripper_init_eventids2(Ripper);
/* ensure existing in symbol table */
rb_intern("||");
rb_intern("&&");
}
#endif /* RIPPER */
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