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ruby/iseq.c

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/**********************************************************************
iseq.c -
$Author$
created at: 2006-07-11(Tue) 09:00:03 +0900
Copyright (C) 2006 Koichi Sasada
**********************************************************************/
#include "internal.h"
#include "ruby/util.h"
#include "eval_intern.h"
#ifdef HAVE_DLADDR
# include <dlfcn.h>
#endif
/* #define RUBY_MARK_FREE_DEBUG 1 */
#include "gc.h"
#include "vm_core.h"
#include "iseq.h"
#include "id_table.h"
#include "insns.inc"
#include "insns_info.inc"
VALUE rb_cISeq;
static VALUE iseqw_new(const rb_iseq_t *iseq);
static const rb_iseq_t *iseqw_check(VALUE iseqw);
#define hidden_obj_p(obj) (!SPECIAL_CONST_P(obj) && !RBASIC(obj)->klass)
static inline VALUE
obj_resurrect(VALUE obj)
{
if (hidden_obj_p(obj)) {
switch (BUILTIN_TYPE(obj)) {
case T_STRING:
obj = rb_str_resurrect(obj);
break;
case T_ARRAY:
obj = rb_ary_resurrect(obj);
break;
}
}
return obj;
}
static void
compile_data_free(struct iseq_compile_data *compile_data)
{
if (compile_data) {
struct iseq_compile_data_storage *cur, *next;
cur = compile_data->storage_head;
while (cur) {
next = cur->next;
ruby_xfree(cur);
cur = next;
}
if (compile_data->ivar_cache_table) {
rb_id_table_free(compile_data->ivar_cache_table);
}
ruby_xfree(compile_data);
}
}
void
rb_iseq_free(const rb_iseq_t *iseq)
{
RUBY_FREE_ENTER("iseq");
if (iseq) {
if (iseq->body) {
ruby_xfree((void *)iseq->body->iseq_encoded);
ruby_xfree((void *)iseq->body->line_info_table);
ruby_xfree((void *)iseq->body->local_table);
ruby_xfree((void *)iseq->body->is_entries);
if (iseq->body->ci_entries) {
unsigned int i;
struct rb_call_info_with_kwarg *ci_kw_entries = (struct rb_call_info_with_kwarg *)&iseq->body->ci_entries[iseq->body->ci_size];
for (i=0; i<iseq->body->ci_kw_size; i++) {
const struct rb_call_info_kw_arg *kw_arg = ci_kw_entries[i].kw_arg;
ruby_xfree((void *)kw_arg);
}
ruby_xfree(iseq->body->ci_entries);
ruby_xfree(iseq->body->cc_entries);
}
ruby_xfree((void *)iseq->body->catch_table);
ruby_xfree((void *)iseq->body->param.opt_table);
if (iseq->body->param.keyword != NULL) {
ruby_xfree((void *)iseq->body->param.keyword->default_values);
ruby_xfree((void *)iseq->body->param.keyword);
}
compile_data_free(ISEQ_COMPILE_DATA(iseq));
ruby_xfree(iseq->body);
}
}
RUBY_FREE_LEAVE("iseq");
}
void
rb_iseq_mark(const rb_iseq_t *iseq)
{
RUBY_MARK_ENTER("iseq");
if (iseq->body) {
const struct rb_iseq_constant_body *body = iseq->body;
RUBY_MARK_UNLESS_NULL(body->mark_ary);
rb_gc_mark(body->location.label);
rb_gc_mark(body->location.base_label);
rb_gc_mark(body->location.pathobj);
RUBY_MARK_UNLESS_NULL((VALUE)body->parent_iseq);
}
if (FL_TEST(iseq, ISEQ_NOT_LOADED_YET)) {
rb_gc_mark(iseq->aux.loader.obj);
}
else if (ISEQ_COMPILE_DATA(iseq) != 0) {
const struct iseq_compile_data *const compile_data = ISEQ_COMPILE_DATA(iseq);
RUBY_MARK_UNLESS_NULL(compile_data->mark_ary);
RUBY_MARK_UNLESS_NULL(compile_data->err_info);
RUBY_MARK_UNLESS_NULL(compile_data->catch_table_ary);
}
RUBY_MARK_LEAVE("iseq");
}
static size_t
param_keyword_size(const struct rb_iseq_param_keyword *pkw)
{
size_t size = 0;
if (!pkw) return size;
size += sizeof(struct rb_iseq_param_keyword);
size += sizeof(VALUE) * (pkw->num - pkw->required_num);
return size;
}
static size_t
iseq_memsize(const rb_iseq_t *iseq)
{
size_t size = 0; /* struct already counted as RVALUE size */
const struct rb_iseq_constant_body *body = iseq->body;
const struct iseq_compile_data *compile_data;
/* TODO: should we count original_iseq? */
if (body) {
struct rb_call_info_with_kwarg *ci_kw_entries = (struct rb_call_info_with_kwarg *)&body->ci_entries[body->ci_size];
size += sizeof(struct rb_iseq_constant_body);
size += body->iseq_size * sizeof(VALUE);
size += body->line_info_size * sizeof(struct iseq_line_info_entry);
size += body->local_table_size * sizeof(ID);
if (body->catch_table) {
size += iseq_catch_table_bytes(body->catch_table->size);
}
size += (body->param.opt_num + 1) * sizeof(VALUE);
size += param_keyword_size(body->param.keyword);
/* body->is_entries */
size += body->is_size * sizeof(union iseq_inline_storage_entry);
/* body->ci_entries */
size += body->ci_size * sizeof(struct rb_call_info);
size += body->ci_kw_size * sizeof(struct rb_call_info_with_kwarg);
/* body->cc_entries */
size += body->ci_size * sizeof(struct rb_call_cache);
size += body->ci_kw_size * sizeof(struct rb_call_cache);
if (ci_kw_entries) {
unsigned int i;
for (i = 0; i < body->ci_kw_size; i++) {
const struct rb_call_info_kw_arg *kw_arg = ci_kw_entries[i].kw_arg;
if (kw_arg) {
size += rb_call_info_kw_arg_bytes(kw_arg->keyword_len);
}
}
}
}
compile_data = ISEQ_COMPILE_DATA(iseq);
if (compile_data) {
struct iseq_compile_data_storage *cur;
size += sizeof(struct iseq_compile_data);
cur = compile_data->storage_head;
while (cur) {
size += cur->size + SIZEOF_ISEQ_COMPILE_DATA_STORAGE;
cur = cur->next;
}
}
return size;
}
static rb_iseq_t *
iseq_alloc(void)
{
rb_iseq_t *iseq = iseq_imemo_alloc();
iseq->body = ZALLOC(struct rb_iseq_constant_body);
return iseq;
}
VALUE
rb_iseq_pathobj_new(VALUE path, VALUE realpath)
{
VALUE pathobj;
VM_ASSERT(RB_TYPE_P(path, T_STRING));
VM_ASSERT(realpath == Qnil || RB_TYPE_P(realpath, T_STRING));
if (path == realpath ||
(!NIL_P(realpath) && rb_str_cmp(path, realpath) == 0)) {
pathobj = rb_fstring(path);
}
else {
if (!NIL_P(realpath)) realpath = rb_fstring(realpath);
pathobj = rb_ary_new_from_args(2, rb_fstring(path), realpath);
rb_obj_freeze(pathobj);
}
return pathobj;
}
void
rb_iseq_pathobj_set(const rb_iseq_t *iseq, VALUE path, VALUE realpath)
{
RB_OBJ_WRITE(iseq, &iseq->body->location.pathobj,
rb_iseq_pathobj_new(path, realpath));
}
static rb_iseq_location_t *
iseq_location_setup(rb_iseq_t *iseq, VALUE name, VALUE path, VALUE realpath, VALUE first_lineno)
{
rb_iseq_location_t *loc = &iseq->body->location;
rb_iseq_pathobj_set(iseq, path, realpath);
RB_OBJ_WRITE(iseq, &loc->label, name);
RB_OBJ_WRITE(iseq, &loc->base_label, name);
loc->first_lineno = first_lineno;
return loc;
}
static void
set_relation(rb_iseq_t *iseq, const rb_iseq_t *piseq)
{
const VALUE type = iseq->body->type;
/* set class nest stack */
if (type == ISEQ_TYPE_TOP) {
iseq->body->local_iseq = iseq;
}
else if (type == ISEQ_TYPE_METHOD || type == ISEQ_TYPE_CLASS) {
iseq->body->local_iseq = iseq;
}
else if (piseq) {
iseq->body->local_iseq = piseq->body->local_iseq;
}
if (piseq) {
iseq->body->parent_iseq = piseq;
}
if (type == ISEQ_TYPE_MAIN) {
iseq->body->local_iseq = iseq;
}
}
void
rb_iseq_add_mark_object(const rb_iseq_t *iseq, VALUE obj)
{
/* TODO: check dedup */
rb_ary_push(ISEQ_MARK_ARY(iseq), obj);
}
static VALUE
prepare_iseq_build(rb_iseq_t *iseq,
VALUE name, VALUE path, VALUE realpath, VALUE first_lineno,
const rb_iseq_t *parent, enum iseq_type type,
const rb_compile_option_t *option)
{
VALUE coverage = Qfalse;
VALUE err_info = Qnil;
if (parent && (type == ISEQ_TYPE_MAIN || type == ISEQ_TYPE_TOP))
err_info = Qfalse;
iseq->body->type = type;
set_relation(iseq, parent);
name = rb_fstring(name);
iseq_location_setup(iseq, name, path, realpath, first_lineno);
if (iseq != iseq->body->local_iseq) {
RB_OBJ_WRITE(iseq, &iseq->body->location.base_label, iseq->body->local_iseq->body->location.label);
}
RB_OBJ_WRITE(iseq, &iseq->body->mark_ary, iseq_mark_ary_create(0));
ISEQ_COMPILE_DATA(iseq) = ZALLOC(struct iseq_compile_data);
RB_OBJ_WRITE(iseq, &ISEQ_COMPILE_DATA(iseq)->err_info, err_info);
RB_OBJ_WRITE(iseq, &ISEQ_COMPILE_DATA(iseq)->mark_ary, rb_ary_tmp_new(3));
ISEQ_COMPILE_DATA(iseq)->storage_head = ISEQ_COMPILE_DATA(iseq)->storage_current =
(struct iseq_compile_data_storage *)
ALLOC_N(char, INITIAL_ISEQ_COMPILE_DATA_STORAGE_BUFF_SIZE +
SIZEOF_ISEQ_COMPILE_DATA_STORAGE);
RB_OBJ_WRITE(iseq, &ISEQ_COMPILE_DATA(iseq)->catch_table_ary, rb_ary_tmp_new(3));
ISEQ_COMPILE_DATA(iseq)->storage_head->pos = 0;
ISEQ_COMPILE_DATA(iseq)->storage_head->next = 0;
ISEQ_COMPILE_DATA(iseq)->storage_head->size =
INITIAL_ISEQ_COMPILE_DATA_STORAGE_BUFF_SIZE;
ISEQ_COMPILE_DATA(iseq)->option = option;
ISEQ_COMPILE_DATA(iseq)->last_coverable_line = -1;
ISEQ_COMPILE_DATA(iseq)->ivar_cache_table = NULL;
if (option->coverage_enabled) {
VALUE coverages = rb_get_coverages();
if (RTEST(coverages)) {
coverage = rb_hash_lookup(coverages, rb_iseq_path(iseq));
if (NIL_P(coverage)) coverage = Qfalse;
}
}
ISEQ_COVERAGE_SET(iseq, coverage);
return Qtrue;
}
static VALUE
cleanup_iseq_build(rb_iseq_t *iseq)
{
struct iseq_compile_data *data = ISEQ_COMPILE_DATA(iseq);
VALUE err = data->err_info;
ISEQ_COMPILE_DATA(iseq) = 0;
compile_data_free(data);
if (RTEST(err)) {
VALUE path = pathobj_path(iseq->body->location.pathobj);
if (err == Qtrue) err = rb_exc_new_cstr(rb_eSyntaxError, "compile error");
rb_funcallv(err, rb_intern("set_backtrace"), 1, &path);
rb_exc_raise(err);
}
return Qtrue;
}
static rb_compile_option_t COMPILE_OPTION_DEFAULT = {
OPT_INLINE_CONST_CACHE, /* int inline_const_cache; */
OPT_PEEPHOLE_OPTIMIZATION, /* int peephole_optimization; */
OPT_TAILCALL_OPTIMIZATION, /* int tailcall_optimization */
OPT_SPECIALISED_INSTRUCTION, /* int specialized_instruction; */
OPT_OPERANDS_UNIFICATION, /* int operands_unification; */
OPT_INSTRUCTIONS_UNIFICATION, /* int instructions_unification; */
OPT_STACK_CACHING, /* int stack_caching; */
OPT_TRACE_INSTRUCTION, /* int trace_instruction */
OPT_FROZEN_STRING_LITERAL,
OPT_DEBUG_FROZEN_STRING_LITERAL,
TRUE, /* coverage_enabled */
};
static const rb_compile_option_t COMPILE_OPTION_FALSE = {0};
static void
set_compile_option_from_hash(rb_compile_option_t *option, VALUE opt)
{
#define SET_COMPILE_OPTION(o, h, mem) \
{ VALUE flag = rb_hash_aref((h), ID2SYM(rb_intern(#mem))); \
if (flag == Qtrue) { (o)->mem = 1; } \
else if (flag == Qfalse) { (o)->mem = 0; } \
}
#define SET_COMPILE_OPTION_NUM(o, h, mem) \
{ VALUE num = rb_hash_aref(opt, ID2SYM(rb_intern(#mem))); \
if (!NIL_P(num)) (o)->mem = NUM2INT(num); \
}
SET_COMPILE_OPTION(option, opt, inline_const_cache);
SET_COMPILE_OPTION(option, opt, peephole_optimization);
SET_COMPILE_OPTION(option, opt, tailcall_optimization);
SET_COMPILE_OPTION(option, opt, specialized_instruction);
SET_COMPILE_OPTION(option, opt, operands_unification);
SET_COMPILE_OPTION(option, opt, instructions_unification);
SET_COMPILE_OPTION(option, opt, stack_caching);
SET_COMPILE_OPTION(option, opt, trace_instruction);
SET_COMPILE_OPTION(option, opt, frozen_string_literal);
SET_COMPILE_OPTION(option, opt, debug_frozen_string_literal);
SET_COMPILE_OPTION(option, opt, coverage_enabled);
SET_COMPILE_OPTION_NUM(option, opt, debug_level);
#undef SET_COMPILE_OPTION
#undef SET_COMPILE_OPTION_NUM
}
void
rb_iseq_make_compile_option(rb_compile_option_t *option, VALUE opt)
{
Check_Type(opt, T_HASH);
set_compile_option_from_hash(option, opt);
}
static void
make_compile_option(rb_compile_option_t *option, VALUE opt)
{
if (opt == Qnil) {
*option = COMPILE_OPTION_DEFAULT;
}
else if (opt == Qfalse) {
*option = COMPILE_OPTION_FALSE;
}
else if (opt == Qtrue) {
int i;
for (i = 0; i < (int)(sizeof(rb_compile_option_t) / sizeof(int)); ++i)
((int *)option)[i] = 1;
}
else if (RB_TYPE_P(opt, T_HASH)) {
*option = COMPILE_OPTION_DEFAULT;
set_compile_option_from_hash(option, opt);
}
else {
rb_raise(rb_eTypeError, "Compile option must be Hash/true/false/nil");
}
}
static VALUE
make_compile_option_value(rb_compile_option_t *option)
{
VALUE opt = rb_hash_new();
#define SET_COMPILE_OPTION(o, h, mem) \
rb_hash_aset((h), ID2SYM(rb_intern(#mem)), (o)->mem ? Qtrue : Qfalse)
#define SET_COMPILE_OPTION_NUM(o, h, mem) \
rb_hash_aset((h), ID2SYM(rb_intern(#mem)), INT2NUM((o)->mem))
{
SET_COMPILE_OPTION(option, opt, inline_const_cache);
SET_COMPILE_OPTION(option, opt, peephole_optimization);
SET_COMPILE_OPTION(option, opt, tailcall_optimization);
SET_COMPILE_OPTION(option, opt, specialized_instruction);
SET_COMPILE_OPTION(option, opt, operands_unification);
SET_COMPILE_OPTION(option, opt, instructions_unification);
SET_COMPILE_OPTION(option, opt, stack_caching);
SET_COMPILE_OPTION(option, opt, trace_instruction);
SET_COMPILE_OPTION(option, opt, frozen_string_literal);
SET_COMPILE_OPTION(option, opt, debug_frozen_string_literal);
SET_COMPILE_OPTION(option, opt, coverage_enabled);
SET_COMPILE_OPTION_NUM(option, opt, debug_level);
}
#undef SET_COMPILE_OPTION
#undef SET_COMPILE_OPTION_NUM
return opt;
}
rb_iseq_t *
rb_iseq_new(NODE *node, VALUE name, VALUE path, VALUE realpath,
const rb_iseq_t *parent, enum iseq_type type)
{
return rb_iseq_new_with_opt(node, name, path, realpath, INT2FIX(0), parent, type,
&COMPILE_OPTION_DEFAULT);
}
rb_iseq_t *
rb_iseq_new_top(NODE *node, VALUE name, VALUE path, VALUE realpath, const rb_iseq_t *parent)
{
return rb_iseq_new_with_opt(node, name, path, realpath, INT2FIX(0), parent, ISEQ_TYPE_TOP,
&COMPILE_OPTION_DEFAULT);
}
rb_iseq_t *
rb_iseq_new_main(NODE *node, VALUE path, VALUE realpath, const rb_iseq_t *parent)
{
return rb_iseq_new_with_opt(node, rb_fstring_cstr("<main>"),
path, realpath, INT2FIX(0),
parent, ISEQ_TYPE_MAIN, &COMPILE_OPTION_DEFAULT);
}
static inline rb_iseq_t *
iseq_translate(rb_iseq_t *iseq)
{
if (rb_respond_to(rb_cISeq, rb_intern("translate"))) {
VALUE v1 = iseqw_new(iseq);
VALUE v2 = rb_funcall(rb_cISeq, rb_intern("translate"), 1, v1);
if (v1 != v2 && CLASS_OF(v2) == rb_cISeq) {
iseq = (rb_iseq_t *)iseqw_check(v2);
}
}
return iseq;
}
rb_iseq_t *
rb_iseq_new_with_opt(NODE *node, VALUE name, VALUE path, VALUE realpath,
VALUE first_lineno, const rb_iseq_t *parent,
enum iseq_type type, const rb_compile_option_t *option)
{
/* TODO: argument check */
rb_iseq_t *iseq = iseq_alloc();
if (!option) option = &COMPILE_OPTION_DEFAULT;
prepare_iseq_build(iseq, name, path, realpath, first_lineno, parent, type, option);
rb_iseq_compile_node(iseq, node);
cleanup_iseq_build(iseq);
return iseq_translate(iseq);
}
const rb_iseq_t *
rb_iseq_load_iseq(VALUE fname)
{
VALUE iseqv = rb_check_funcall(rb_cISeq, rb_intern("load_iseq"), 1, &fname);
if (!SPECIAL_CONST_P(iseqv) && RBASIC_CLASS(iseqv) == rb_cISeq) {
return iseqw_check(iseqv);
}
return NULL;
}
#define CHECK_ARRAY(v) rb_convert_type_with_id((v), T_ARRAY, "Array", idTo_ary)
#define CHECK_HASH(v) rb_convert_type_with_id((v), T_HASH, "Hash", idTo_hash)
#define CHECK_STRING(v) rb_convert_type_with_id((v), T_STRING, "String", idTo_str)
#define CHECK_SYMBOL(v) rb_convert_type_with_id((v), T_SYMBOL, "Symbol", idTo_sym)
static inline VALUE CHECK_INTEGER(VALUE v) {(void)NUM2LONG(v); return v;}
static enum iseq_type
iseq_type_from_sym(VALUE type)
{
const ID id_top = rb_intern("top");
const ID id_method = rb_intern("method");
const ID id_block = rb_intern("block");
const ID id_class = rb_intern("class");
const ID id_rescue = rb_intern("rescue");
const ID id_ensure = rb_intern("ensure");
const ID id_eval = rb_intern("eval");
const ID id_main = rb_intern("main");
const ID id_defined_guard = rb_intern("defined_guard");
/* ensure all symbols are static or pinned down before
* conversion */
const ID typeid = rb_check_id(&type);
if (typeid == id_top) return ISEQ_TYPE_TOP;
if (typeid == id_method) return ISEQ_TYPE_METHOD;
if (typeid == id_block) return ISEQ_TYPE_BLOCK;
if (typeid == id_class) return ISEQ_TYPE_CLASS;
if (typeid == id_rescue) return ISEQ_TYPE_RESCUE;
if (typeid == id_ensure) return ISEQ_TYPE_ENSURE;
if (typeid == id_eval) return ISEQ_TYPE_EVAL;
if (typeid == id_main) return ISEQ_TYPE_MAIN;
if (typeid == id_defined_guard) return ISEQ_TYPE_DEFINED_GUARD;
return (enum iseq_type)-1;
}
static VALUE
iseq_load(VALUE data, const rb_iseq_t *parent, VALUE opt)
{
rb_iseq_t *iseq = iseq_alloc();
VALUE magic, version1, version2, format_type, misc;
VALUE name, path, realpath, first_lineno;
VALUE type, body, locals, params, exception;
st_data_t iseq_type;
rb_compile_option_t option;
int i = 0;
/* [magic, major_version, minor_version, format_type, misc,
* label, path, first_lineno,
* type, locals, args, exception_table, body]
*/
data = CHECK_ARRAY(data);
magic = CHECK_STRING(rb_ary_entry(data, i++));
version1 = CHECK_INTEGER(rb_ary_entry(data, i++));
version2 = CHECK_INTEGER(rb_ary_entry(data, i++));
format_type = CHECK_INTEGER(rb_ary_entry(data, i++));
misc = CHECK_HASH(rb_ary_entry(data, i++));
((void)magic, (void)version1, (void)version2, (void)format_type);
name = CHECK_STRING(rb_ary_entry(data, i++));
path = CHECK_STRING(rb_ary_entry(data, i++));
realpath = rb_ary_entry(data, i++);
realpath = NIL_P(realpath) ? Qnil : CHECK_STRING(realpath);
first_lineno = CHECK_INTEGER(rb_ary_entry(data, i++));
type = CHECK_SYMBOL(rb_ary_entry(data, i++));
locals = CHECK_ARRAY(rb_ary_entry(data, i++));
params = CHECK_HASH(rb_ary_entry(data, i++));
exception = CHECK_ARRAY(rb_ary_entry(data, i++));
body = CHECK_ARRAY(rb_ary_entry(data, i++));
iseq->body->local_iseq = iseq;
iseq_type = iseq_type_from_sym(type);
if (iseq_type == (enum iseq_type)-1) {
rb_raise(rb_eTypeError, "unsupport type: :%"PRIsVALUE, rb_sym2str(type));
}
make_compile_option(&option, opt);
option.peephole_optimization = FALSE; /* because peephole optimization can modify original iseq */
prepare_iseq_build(iseq, name, path, realpath, first_lineno,
parent, (enum iseq_type)iseq_type, &option);
rb_iseq_build_from_ary(iseq, misc, locals, params, exception, body);
cleanup_iseq_build(iseq);
return iseqw_new(iseq);
}
/*
* :nodoc:
*/
static VALUE
iseq_s_load(int argc, VALUE *argv, VALUE self)
{
VALUE data, opt=Qnil;
rb_scan_args(argc, argv, "11", &data, &opt);
return iseq_load(data, NULL, opt);
}
VALUE
rb_iseq_load(VALUE data, VALUE parent, VALUE opt)
{
return iseq_load(data, RTEST(parent) ? (rb_iseq_t *)parent : NULL, opt);
}
rb_iseq_t *
rb_iseq_compile_with_option(VALUE src, VALUE file, VALUE realpath, VALUE line, const struct rb_block *base_block, VALUE opt)
{
rb_thread_t *th = GET_THREAD();
rb_iseq_t *iseq = NULL;
const rb_iseq_t *const parent = base_block ? vm_block_iseq(base_block) : NULL;
rb_compile_option_t option;
const enum iseq_type type = parent ? ISEQ_TYPE_EVAL : ISEQ_TYPE_TOP;
#if !defined(__GNUC__) || (__GNUC__ == 4 && __GNUC_MINOR__ == 8)
# define INITIALIZED volatile /* suppress warnings by gcc 4.8 */
#else
# define INITIALIZED /* volatile */
#endif
NODE *(*parse)(VALUE vparser, VALUE fname, VALUE file, int start);
int ln;
NODE *INITIALIZED node;
/* safe results first */
make_compile_option(&option, opt);
ln = NUM2INT(line);
StringValueCStr(file);
if (RB_TYPE_P(src, T_FILE)) {
parse = rb_parser_compile_file_path;
}
else {
parse = rb_parser_compile_string_path;
StringValue(src);
}
{
const VALUE parser = rb_parser_new();
rb_parser_set_context(parser, base_block, FALSE);
node = (*parse)(parser, file, src, ln);
}
if (!node) {
rb_exc_raise(th->errinfo);
}
else {
INITIALIZED VALUE label = parent ?
parent->body->location.label :
rb_fstring_cstr("<compiled>");
iseq = rb_iseq_new_with_opt(node, label, file, realpath, line,
parent, type, &option);
}
return iseq;
}
rb_iseq_t *
rb_iseq_compile(VALUE src, VALUE file, VALUE line)
{
return rb_iseq_compile_with_option(src, file, Qnil, line, 0, Qnil);
}
rb_iseq_t *
rb_iseq_compile_on_base(VALUE src, VALUE file, VALUE line, const struct rb_block *base_block)
{
return rb_iseq_compile_with_option(src, file, Qnil, line, base_block, Qnil);
}
VALUE
rb_iseq_path(const rb_iseq_t *iseq)
{
return pathobj_path(iseq->body->location.pathobj);
}
VALUE
rb_iseq_realpath(const rb_iseq_t *iseq)
{
return pathobj_realpath(iseq->body->location.pathobj);
}
VALUE
rb_iseq_absolute_path(const rb_iseq_t *iseq)
{
return rb_iseq_realpath(iseq);
}
VALUE
rb_iseq_label(const rb_iseq_t *iseq)
{
return iseq->body->location.label;
}
VALUE
rb_iseq_base_label(const rb_iseq_t *iseq)
{
return iseq->body->location.base_label;
}
VALUE
rb_iseq_first_lineno(const rb_iseq_t *iseq)
{
return iseq->body->location.first_lineno;
}
VALUE
rb_iseq_method_name(const rb_iseq_t *iseq)
{
const rb_iseq_t *local_iseq;
local_iseq = iseq->body->local_iseq;
if (local_iseq->body->type == ISEQ_TYPE_METHOD) {
return local_iseq->body->location.base_label;
}
else {
return Qnil;
}
}
VALUE
rb_iseq_coverage(const rb_iseq_t *iseq)
{
return ISEQ_COVERAGE(iseq);
}
/* define wrapper class methods (RubyVM::InstructionSequence) */
static void
iseqw_mark(void *ptr)
{
rb_gc_mark((VALUE)ptr);
}
static size_t
iseqw_memsize(const void *ptr)
{
return iseq_memsize((const rb_iseq_t *)ptr);
}
static const rb_data_type_t iseqw_data_type = {
"T_IMEMO/iseq",
{iseqw_mark, NULL, iseqw_memsize,},
0, 0, RUBY_TYPED_FREE_IMMEDIATELY|RUBY_TYPED_WB_PROTECTED
};
static VALUE
iseqw_new(const rb_iseq_t *iseq)
{
union { const rb_iseq_t *in; void *out; } deconst;
VALUE obj;
deconst.in = iseq;
obj = TypedData_Wrap_Struct(rb_cISeq, &iseqw_data_type, deconst.out);
RB_OBJ_WRITTEN(obj, Qundef, iseq);
return obj;
}
VALUE
rb_iseqw_new(const rb_iseq_t *iseq)
{
return iseqw_new(iseq);
}
/*
* call-seq:
* InstructionSequence.compile(source[, file[, path[, line[, options]]]]) -> iseq
* InstructionSequence.new(source[, file[, path[, line[, options]]]]) -> iseq
*
* Takes +source+, a String of Ruby code and compiles it to an
* InstructionSequence.
*
* Optionally takes +file+, +path+, and +line+ which describe the filename,
* absolute path and first line number of the ruby code in +source+ which are
* metadata attached to the returned +iseq+.
*
* +options+, which can be +true+, +false+ or a +Hash+, is used to
* modify the default behavior of the Ruby iseq compiler.
*
* For details regarding valid compile options see ::compile_option=.
*
* RubyVM::InstructionSequence.compile("a = 1 + 2")
* #=> <RubyVM::InstructionSequence:<compiled>@<compiled>>
*
*/
static VALUE
iseqw_s_compile(int argc, VALUE *argv, VALUE self)
{
VALUE src, file = Qnil, path = Qnil, line = INT2FIX(1), opt = Qnil;
int i;
rb_secure(1);
i = rb_scan_args(argc, argv, "1*:", &src, NULL, &opt);
if (i > 4+NIL_P(opt)) rb_error_arity(argc, 1, 5);
switch (i) {
case 5: opt = argv[--i];
case 4: line = argv[--i];
case 3: path = argv[--i];
case 2: file = argv[--i];
}
if (NIL_P(file)) file = rb_fstring_cstr("<compiled>");
if (NIL_P(line)) line = INT2FIX(1);
return iseqw_new(rb_iseq_compile_with_option(src, file, path, line, 0, opt));
}
/*
* call-seq:
* InstructionSequence.compile_file(file[, options]) -> iseq
*
* Takes +file+, a String with the location of a Ruby source file, reads,
* parses and compiles the file, and returns +iseq+, the compiled
* InstructionSequence with source location metadata set.
*
* Optionally takes +options+, which can be +true+, +false+ or a +Hash+, to
* modify the default behavior of the Ruby iseq compiler.
*
* For details regarding valid compile options see ::compile_option=.
*
* # /tmp/hello.rb
* puts "Hello, world!"
*
* # elsewhere
* RubyVM::InstructionSequence.compile_file("/tmp/hello.rb")
* #=> <RubyVM::InstructionSequence:<main>@/tmp/hello.rb>
*/
static VALUE
iseqw_s_compile_file(int argc, VALUE *argv, VALUE self)
{
VALUE file, line = INT2FIX(1), opt = Qnil;
VALUE parser, f, exc = Qnil;
NODE *node;
rb_compile_option_t option;
int i;
rb_secure(1);
i = rb_scan_args(argc, argv, "1*:", &file, NULL, &opt);
if (i > 1+NIL_P(opt)) rb_error_arity(argc, 1, 2);
switch (i) {
case 2: opt = argv[--i];
}
FilePathValue(file);
file = rb_fstring(file); /* rb_io_t->pathv gets frozen anyways */
f = rb_file_open_str(file, "r");
parser = rb_parser_new();
rb_parser_set_context(parser, NULL, FALSE);
node = rb_parser_compile_file_path(parser, file, f, NUM2INT(line));
if (!node) exc = GET_THREAD()->errinfo;
rb_io_close(f);
if (!node) rb_exc_raise(exc);
make_compile_option(&option, opt);
return iseqw_new(rb_iseq_new_with_opt(node, rb_fstring_cstr("<main>"),
file,
rb_realpath_internal(Qnil, file, 1),
line, NULL, ISEQ_TYPE_TOP, &option));
}
/*
* call-seq:
* InstructionSequence.compile_option = options
*
* Sets the default values for various optimizations in the Ruby iseq
* compiler.
*
* Possible values for +options+ include +true+, which enables all options,
* +false+ which disables all options, and +nil+ which leaves all options
* unchanged.
*
* You can also pass a +Hash+ of +options+ that you want to change, any
* options not present in the hash will be left unchanged.
*
* Possible option names (which are keys in +options+) which can be set to
* +true+ or +false+ include:
*
* * +:inline_const_cache+
* * +:instructions_unification+
* * +:operands_unification+
* * +:peephole_optimization+
* * +:specialized_instruction+
* * +:stack_caching+
* * +:tailcall_optimization+
* * +:trace_instruction+
*
* Additionally, +:debug_level+ can be set to an integer.
*
* These default options can be overwritten for a single run of the iseq
* compiler by passing any of the above values as the +options+ parameter to
* ::new, ::compile and ::compile_file.
*/
static VALUE
iseqw_s_compile_option_set(VALUE self, VALUE opt)
{
rb_compile_option_t option;
rb_secure(1);
make_compile_option(&option, opt);
COMPILE_OPTION_DEFAULT = option;
return opt;
}
/*
* call-seq:
* InstructionSequence.compile_option -> options
*
* Returns a hash of default options used by the Ruby iseq compiler.
*
* For details, see InstructionSequence.compile_option=.
*/
static VALUE
iseqw_s_compile_option_get(VALUE self)
{
return make_compile_option_value(&COMPILE_OPTION_DEFAULT);
}
static const rb_iseq_t *
iseqw_check(VALUE iseqw)
{
rb_iseq_t *iseq = DATA_PTR(iseqw);
if (!iseq->body) {
ibf_load_iseq_complete(iseq);
}
if (!iseq->body->location.label) {
rb_raise(rb_eTypeError, "uninitialized InstructionSequence");
}
return iseq;
}
const rb_iseq_t *
rb_iseqw_to_iseq(VALUE iseqw)
{
return iseqw_check(iseqw);
}
/*
* call-seq:
* iseq.eval -> obj
*
* Evaluates the instruction sequence and returns the result.
*
* RubyVM::InstructionSequence.compile("1 + 2").eval #=> 3
*/
static VALUE
iseqw_eval(VALUE self)
{
rb_secure(1);
return rb_iseq_eval(iseqw_check(self));
}
/*
* Returns a human-readable string representation of this instruction
* sequence, including the #label and #path.
*/
static VALUE
iseqw_inspect(VALUE self)
{
const rb_iseq_t *iseq = iseqw_check(self);
VALUE klass = rb_class_name(rb_obj_class(self));
if (!iseq->body->location.label) {
return rb_sprintf("#<%"PRIsVALUE": uninitialized>", klass);
}
else {
return rb_sprintf("<%"PRIsVALUE":%"PRIsVALUE"@%"PRIsVALUE">",
klass,
iseq->body->location.label, rb_iseq_path(iseq));
}
}
/*
* Returns the path of this instruction sequence.
*
* <code><compiled></code> if the iseq was evaluated from a string.
*
* For example, using irb:
*
* iseq = RubyVM::InstructionSequence.compile('num = 1 + 2')
* #=> <RubyVM::InstructionSequence:<compiled>@<compiled>>
* iseq.path
* #=> "<compiled>"
*
* Using ::compile_file:
*
* # /tmp/method.rb
* def hello
* puts "hello, world"
* end
*
* # in irb
* > iseq = RubyVM::InstructionSequence.compile_file('/tmp/method.rb')
* > iseq.path #=> /tmp/method.rb
*/
static VALUE
iseqw_path(VALUE self)
{
return rb_iseq_path(iseqw_check(self));
}
/*
* Returns the absolute path of this instruction sequence.
*
* +nil+ if the iseq was evaluated from a string.
*
* For example, using ::compile_file:
*
* # /tmp/method.rb
* def hello
* puts "hello, world"
* end
*
* # in irb
* > iseq = RubyVM::InstructionSequence.compile_file('/tmp/method.rb')
* > iseq.absolute_path #=> /tmp/method.rb
*/
static VALUE
iseqw_absolute_path(VALUE self)
{
return rb_iseq_realpath(iseqw_check(self));
}
/* Returns the label of this instruction sequence.
*
* <code><main></code> if it's at the top level, <code><compiled></code> if it
* was evaluated from a string.
*
* For example, using irb:
*
* iseq = RubyVM::InstructionSequence.compile('num = 1 + 2')
* #=> <RubyVM::InstructionSequence:<compiled>@<compiled>>
* iseq.label
* #=> "<compiled>"
*
* Using ::compile_file:
*
* # /tmp/method.rb
* def hello
* puts "hello, world"
* end
*
* # in irb
* > iseq = RubyVM::InstructionSequence.compile_file('/tmp/method.rb')
* > iseq.label #=> <main>
*/
static VALUE
iseqw_label(VALUE self)
{
return rb_iseq_label(iseqw_check(self));
}
/* Returns the base label of this instruction sequence.
*
* For example, using irb:
*
* iseq = RubyVM::InstructionSequence.compile('num = 1 + 2')
* #=> <RubyVM::InstructionSequence:<compiled>@<compiled>>
* iseq.base_label
* #=> "<compiled>"
*
* Using ::compile_file:
*
* # /tmp/method.rb
* def hello
* puts "hello, world"
* end
*
* # in irb
* > iseq = RubyVM::InstructionSequence.compile_file('/tmp/method.rb')
* > iseq.base_label #=> <main>
*/
static VALUE
iseqw_base_label(VALUE self)
{
return rb_iseq_base_label(iseqw_check(self));
}
/* Returns the number of the first source line where the instruction sequence
* was loaded from.
*
* For example, using irb:
*
* iseq = RubyVM::InstructionSequence.compile('num = 1 + 2')
* #=> <RubyVM::InstructionSequence:<compiled>@<compiled>>
* iseq.first_lineno
* #=> 1
*/
static VALUE
iseqw_first_lineno(VALUE self)
{
return rb_iseq_first_lineno(iseqw_check(self));
}
static VALUE iseq_data_to_ary(const rb_iseq_t *iseq);
/*
* call-seq:
* iseq.to_a -> ary
*
* Returns an Array with 14 elements representing the instruction sequence
* with the following data:
*
* [magic]
* A string identifying the data format. <b>Always
* +YARVInstructionSequence/SimpleDataFormat+.</b>
*
* [major_version]
* The major version of the instruction sequence.
*
* [minor_version]
* The minor version of the instruction sequence.
*
* [format_type]
* A number identifying the data format. <b>Always 1</b>.
*
* [misc]
* A hash containing:
*
* [+:arg_size+]
* the total number of arguments taken by the method or the block (0 if
* _iseq_ doesn't represent a method or block)
* [+:local_size+]
* the number of local variables + 1
* [+:stack_max+]
* used in calculating the stack depth at which a SystemStackError is
* thrown.
*
* [#label]
* The name of the context (block, method, class, module, etc.) that this
* instruction sequence belongs to.
*
* <code><main></code> if it's at the top level, <code><compiled></code> if
* it was evaluated from a string.
*
* [#path]
* The relative path to the Ruby file where the instruction sequence was
* loaded from.
*
* <code><compiled></code> if the iseq was evaluated from a string.
*
* [#absolute_path]
* The absolute path to the Ruby file where the instruction sequence was
* loaded from.
*
* +nil+ if the iseq was evaluated from a string.
*
* [#first_lineno]
* The number of the first source line where the instruction sequence was
* loaded from.
*
* [type]
* The type of the instruction sequence.
*
* Valid values are +:top+, +:method+, +:block+, +:class+, +:rescue+,
* +:ensure+, +:eval+, +:main+, and +:defined_guard+.
*
* [locals]
* An array containing the names of all arguments and local variables as
* symbols.
*
* [params]
* An Hash object containing parameter information.
*
* More info about these values can be found in +vm_core.h+.
*
* [catch_table]
* A list of exceptions and control flow operators (rescue, next, redo,
* break, etc.).
*
* [bytecode]
* An array of arrays containing the instruction names and operands that
* make up the body of the instruction sequence.
*
* Note that this format is MRI specific and version dependent.
*
*/
static VALUE
iseqw_to_a(VALUE self)
{
const rb_iseq_t *iseq = iseqw_check(self);
rb_secure(1);
return iseq_data_to_ary(iseq);
}
/* TODO: search algorithm is brute force.
this should be binary search or so. */
static const struct iseq_line_info_entry *
get_line_info(const rb_iseq_t *iseq, size_t pos)
{
size_t i = 0, size = iseq->body->line_info_size;
const struct iseq_line_info_entry *table = iseq->body->line_info_table;
const int debug = 0;
if (debug) {
printf("size: %"PRIuSIZE"\n", size);
printf("table[%"PRIuSIZE"]: position: %d, line: %d, pos: %"PRIuSIZE"\n",
i, table[i].position, table[i].line_no, pos);
}
if (size == 0) {
return 0;
}
else if (size == 1) {
return &table[0];
}
else {
for (i=1; i<size; i++) {
if (debug) printf("table[%"PRIuSIZE"]: position: %d, line: %d, pos: %"PRIuSIZE"\n",
i, table[i].position, table[i].line_no, pos);
if (table[i].position == pos) {
return &table[i];
}
if (table[i].position > pos) {
return &table[i-1];
}
}
}
return &table[i-1];
}
static unsigned int
find_line_no(const rb_iseq_t *iseq, size_t pos)
{
const struct iseq_line_info_entry *entry = get_line_info(iseq, pos);
if (entry) {
return entry->line_no;
}
else {
return 0;
}
}
unsigned int
rb_iseq_line_no(const rb_iseq_t *iseq, size_t pos)
{
if (pos == 0) {
return find_line_no(iseq, pos);
}
else {
return find_line_no(iseq, pos - 1);
}
}
static VALUE
id_to_name(ID id, VALUE default_value)
{
VALUE str = rb_id2str(id);
if (!str) {
str = default_value;
}
else if (!rb_str_symname_p(str)) {
str = rb_str_inspect(str);
}
return str;
}
VALUE
rb_insn_operand_intern(const rb_iseq_t *iseq,
VALUE insn, int op_no, VALUE op,
int len, size_t pos, const VALUE *pnop, VALUE child)
{
const char *types = insn_op_types(insn);
char type = types[op_no];
VALUE ret = Qundef;
switch (type) {
case TS_OFFSET: /* LONG */
ret = rb_sprintf("%"PRIdVALUE, (VALUE)(pos + len + op));
break;
case TS_NUM: /* ULONG */
ret = rb_sprintf("%"PRIuVALUE, op);
break;
case TS_LINDEX:{
if (insn == BIN(getlocal) || insn == BIN(setlocal)) {
if (pnop) {
const rb_iseq_t *diseq = iseq;
VALUE level = *pnop, i;
ID lid;
for (i = 0; i < level; i++) {
diseq = diseq->body->parent_iseq;
}
lid = diseq->body->local_table[diseq->body->local_table_size +
VM_ENV_DATA_SIZE - 1 - op];
ret = id_to_name(lid, INT2FIX('*'));
}
else {
ret = rb_sprintf("%"PRIuVALUE, op);
}
}
else {
ret = rb_inspect(INT2FIX(op));
}
break;
}
case TS_ID: /* ID (symbol) */
op = ID2SYM(op);
case TS_VALUE: /* VALUE */
op = obj_resurrect(op);
ret = rb_inspect(op);
if (CLASS_OF(op) == rb_cISeq) {
if (child) {
rb_ary_push(child, op);
}
}
break;
case TS_ISEQ: /* iseq */
{
if (op) {
const rb_iseq_t *iseq = rb_iseq_check((rb_iseq_t *)op);
ret = iseq->body->location.label;
if (child) {
rb_ary_push(child, (VALUE)iseq);
}
}
else {
ret = rb_str_new2("nil");
}
break;
}
case TS_GENTRY:
{
struct rb_global_entry *entry = (struct rb_global_entry *)op;
ret = rb_str_dup(rb_id2str(entry->id));
}
break;
case TS_IC:
ret = rb_sprintf("<is:%"PRIdPTRDIFF">", (union iseq_inline_storage_entry *)op - iseq->body->is_entries);
break;
case TS_CALLINFO:
{
struct rb_call_info *ci = (struct rb_call_info *)op;
VALUE ary = rb_ary_new();
if (ci->mid) {
rb_ary_push(ary, rb_sprintf("mid:%"PRIsVALUE, rb_id2str(ci->mid)));
}
rb_ary_push(ary, rb_sprintf("argc:%d", ci->orig_argc));
if (ci->flag & VM_CALL_KWARG) {
struct rb_call_info_kw_arg *kw_args = ((struct rb_call_info_with_kwarg *)ci)->kw_arg;
VALUE kw_ary = rb_ary_new_from_values(kw_args->keyword_len, kw_args->keywords);
rb_ary_push(ary, rb_sprintf("kw:[%"PRIsVALUE"]", rb_ary_join(kw_ary, rb_str_new2(","))));
}
if (ci->flag) {
VALUE flags = rb_ary_new();
if (ci->flag & VM_CALL_ARGS_SPLAT) rb_ary_push(flags, rb_str_new2("ARGS_SPLAT"));
if (ci->flag & VM_CALL_ARGS_BLOCKARG) rb_ary_push(flags, rb_str_new2("ARGS_BLOCKARG"));
if (ci->flag & VM_CALL_FCALL) rb_ary_push(flags, rb_str_new2("FCALL"));
if (ci->flag & VM_CALL_VCALL) rb_ary_push(flags, rb_str_new2("VCALL"));
if (ci->flag & VM_CALL_TAILCALL) rb_ary_push(flags, rb_str_new2("TAILCALL"));
if (ci->flag & VM_CALL_SUPER) rb_ary_push(flags, rb_str_new2("SUPER"));
if (ci->flag & VM_CALL_KWARG) rb_ary_push(flags, rb_str_new2("KWARG"));
if (ci->flag & VM_CALL_OPT_SEND) rb_ary_push(flags, rb_str_new2("SNED")); /* maybe not reachable */
if (ci->flag & VM_CALL_ARGS_SIMPLE) rb_ary_push(flags, rb_str_new2("ARGS_SIMPLE")); /* maybe not reachable */
rb_ary_push(ary, rb_ary_join(flags, rb_str_new2("|")));
}
ret = rb_sprintf("<callinfo!%"PRIsVALUE">", rb_ary_join(ary, rb_str_new2(", ")));
}
break;
case TS_CALLCACHE:
ret = rb_str_new2("<callcache>");
break;
case TS_CDHASH:
ret = rb_str_new2("<cdhash>");
break;
case TS_FUNCPTR:
{
#ifdef HAVE_DLADDR
Dl_info info;
if (dladdr((void *)op, &info) && info.dli_sname) {
ret = rb_str_new_cstr(info.dli_sname);
break;
}
#endif
ret = rb_str_new2("<funcptr>");
}
break;
default:
rb_bug("insn_operand_intern: unknown operand type: %c", type);
}
return ret;
}
/**
* Disassemble a instruction
* Iseq -> Iseq inspect object
*/
int
rb_iseq_disasm_insn(VALUE ret, const VALUE *code, size_t pos,
const rb_iseq_t *iseq, VALUE child)
{
VALUE insn = code[pos];
int len = insn_len(insn);
int j;
const char *types = insn_op_types(insn);
VALUE str = rb_str_new(0, 0);
const char *insn_name_buff;
insn_name_buff = insn_name(insn);
if (1) {
rb_str_catf(str, "%04"PRIuSIZE" %-16s ", pos, insn_name_buff);
}
else {
rb_str_catf(str, "%04"PRIuSIZE" %-16.*s ", pos,
(int)strcspn(insn_name_buff, "_"), insn_name_buff);
}
for (j = 0; types[j]; j++) {
const char *types = insn_op_types(insn);
VALUE opstr = rb_insn_operand_intern(iseq, insn, j, code[pos + j + 1],
len, pos, &code[pos + j + 2],
child);
rb_str_concat(str, opstr);
if (types[j + 1]) {
rb_str_cat2(str, ", ");
}
}
{
unsigned int line_no = find_line_no(iseq, pos);
unsigned int prev = pos == 0 ? 0 : find_line_no(iseq, pos - 1);
if (line_no && line_no != prev) {
long slen = RSTRING_LEN(str);
slen = (slen > 70) ? 0 : (70 - slen);
str = rb_str_catf(str, "%*s(%4d)", (int)slen, "", line_no);
}
}
if (ret) {
rb_str_cat2(str, "\n");
rb_str_concat(ret, str);
}
else {
printf("%s\n", RSTRING_PTR(str));
}
return len;
}
static const char *
catch_type(int type)
{
switch (type) {
case CATCH_TYPE_RESCUE:
return "rescue";
case CATCH_TYPE_ENSURE:
return "ensure";
case CATCH_TYPE_RETRY:
return "retry";
case CATCH_TYPE_BREAK:
return "break";
case CATCH_TYPE_REDO:
return "redo";
case CATCH_TYPE_NEXT:
return "next";
default:
rb_bug("unknown catch type (%d)", type);
return 0;
}
}
static VALUE
iseq_inspect(const rb_iseq_t *iseq)
{
if (!iseq->body->location.label) {
return rb_sprintf("#<ISeq: uninitialized>");
}
else {
return rb_sprintf("#<ISeq:%s@%s>", RSTRING_PTR(iseq->body->location.label), RSTRING_PTR(rb_iseq_path(iseq)));
}
}
VALUE
rb_iseq_disasm(const rb_iseq_t *iseq)
{
VALUE *code;
VALUE str = rb_str_new(0, 0);
VALUE child = rb_ary_tmp_new(3);
unsigned int size;
unsigned int i;
long l;
const ID *tbl;
size_t n;
enum {header_minlen = 72};
rb_secure(1);
size = iseq->body->iseq_size;
rb_str_cat2(str, "== disasm: ");
rb_str_concat(str, iseq_inspect(iseq));
if ((l = RSTRING_LEN(str)) < header_minlen) {
rb_str_resize(str, header_minlen);
memset(RSTRING_PTR(str) + l, '=', header_minlen - l);
}
rb_str_cat2(str, "\n");
/* show catch table information */
if (iseq->body->catch_table) {
rb_str_cat2(str, "== catch table\n");
}
if (iseq->body->catch_table) {
for (i = 0; i < iseq->body->catch_table->size; i++) {
const struct iseq_catch_table_entry *entry = &iseq->body->catch_table->entries[i];
rb_str_catf(str,
"| catch type: %-6s st: %04d ed: %04d sp: %04d cont: %04d\n",
catch_type((int)entry->type), (int)entry->start,
(int)entry->end, (int)entry->sp, (int)entry->cont);
if (entry->iseq) {
rb_str_concat(str, rb_iseq_disasm(rb_iseq_check(entry->iseq)));
}
}
}
if (iseq->body->catch_table) {
rb_str_cat2(str, "|-------------------------------------"
"-----------------------------------\n");
}
/* show local table information */
tbl = iseq->body->local_table;
if (tbl) {
rb_str_catf(str,
"local table (size: %d, argc: %d "
"[opts: %d, rest: %d, post: %d, block: %d, kw: %d@%d, kwrest: %d])\n",
iseq->body->local_table_size,
iseq->body->param.lead_num,
iseq->body->param.opt_num,
iseq->body->param.flags.has_rest ? iseq->body->param.rest_start : -1,
iseq->body->param.post_num,
iseq->body->param.flags.has_block ? iseq->body->param.block_start : -1,
iseq->body->param.flags.has_kw ? iseq->body->param.keyword->num : -1,
iseq->body->param.flags.has_kw ? iseq->body->param.keyword->required_num : -1,
iseq->body->param.flags.has_kwrest ? iseq->body->param.keyword->rest_start : -1);
for (i = 0; i < iseq->body->local_table_size; i++) {
int li = (int)i;
long width;
VALUE name = id_to_name(tbl[i], 0);
char argi[0x100] = "";
char opti[0x100] = "";
if (iseq->body->param.flags.has_opt) {
int argc = iseq->body->param.lead_num;
int opts = iseq->body->param.opt_num;
if (li >= argc && li < argc + opts) {
snprintf(opti, sizeof(opti), "Opt=%"PRIdVALUE,
iseq->body->param.opt_table[li - argc]);
}
}
snprintf(argi, sizeof(argi), "%s%s%s%s%s", /* arg, opts, rest, post block */
iseq->body->param.lead_num > li ? "Arg" : "",
opti,
(iseq->body->param.flags.has_rest && iseq->body->param.rest_start == li) ? "Rest" : "",
(iseq->body->param.flags.has_post && iseq->body->param.post_start <= li && li < iseq->body->param.post_start + iseq->body->param.post_num) ? "Post" : "",
(iseq->body->param.flags.has_block && iseq->body->param.block_start == li) ? "Block" : "");
rb_str_catf(str, "[%2d] ", iseq->body->local_table_size - i);
width = RSTRING_LEN(str) + 11;
if (name)
rb_str_append(str, name);
else
rb_str_cat2(str, "?");
if (*argi) rb_str_catf(str, "<%s>", argi);
if ((width -= RSTRING_LEN(str)) > 0) rb_str_catf(str, "%*s", (int)width, "");
}
rb_str_cat2(str, "\n");
}
/* show each line */
code = rb_iseq_original_iseq(iseq);
for (n = 0; n < size;) {
n += rb_iseq_disasm_insn(str, code, n, iseq, child);
}
for (l = 0; l < RARRAY_LEN(child); l++) {
VALUE isv = rb_ary_entry(child, l);
rb_str_concat(str, rb_iseq_disasm(rb_iseq_check((rb_iseq_t *)isv)));
}
return str;
}
/*
* call-seq:
* iseq.disasm -> str
* iseq.disassemble -> str
*
* Returns the instruction sequence as a +String+ in human readable form.
*
* puts RubyVM::InstructionSequence.compile('1 + 2').disasm
*
* Produces:
*
* == disasm: <RubyVM::InstructionSequence:<compiled>@<compiled>>==========
* 0000 trace 1 ( 1)
* 0002 putobject 1
* 0004 putobject 2
* 0006 opt_plus <ic:1>
* 0008 leave
*/
static VALUE
iseqw_disasm(VALUE self)
{
return rb_iseq_disasm(iseqw_check(self));
}
/*
* Returns the instruction sequence containing the given proc or method.
*
* For example, using irb:
*
* # a proc
* > p = proc { num = 1 + 2 }
* > RubyVM::InstructionSequence.of(p)
* > #=> <RubyVM::InstructionSequence:block in irb_binding@(irb)>
*
* # for a method
* > def foo(bar); puts bar; end
* > RubyVM::InstructionSequence.of(method(:foo))
* > #=> <RubyVM::InstructionSequence:foo@(irb)>
*
* Using ::compile_file:
*
* # /tmp/iseq_of.rb
* def hello
* puts "hello, world"
* end
*
* $a_global_proc = proc { str = 'a' + 'b' }
*
* # in irb
* > require '/tmp/iseq_of.rb'
*
* # first the method hello
* > RubyVM::InstructionSequence.of(method(:hello))
* > #=> #<RubyVM::InstructionSequence:0x007fb73d7cb1d0>
*
* # then the global proc
* > RubyVM::InstructionSequence.of($a_global_proc)
* > #=> #<RubyVM::InstructionSequence:0x007fb73d7caf78>
*/
static VALUE
iseqw_s_of(VALUE klass, VALUE body)
{
const rb_iseq_t *iseq = NULL;
rb_secure(1);
if (rb_obj_is_proc(body)) {
iseq = vm_proc_iseq(body);
if (!rb_obj_is_iseq((VALUE)iseq)) {
iseq = NULL;
}
}
else {
iseq = rb_method_iseq(body);
}
return iseq ? iseqw_new(iseq) : Qnil;
}
/*
* call-seq:
* InstructionSequence.disasm(body) -> str
* InstructionSequence.disassemble(body) -> str
*
* Takes +body+, a Method or Proc object, and returns a String with the
* human readable instructions for +body+.
*
* For a Method object:
*
* # /tmp/method.rb
* def hello
* puts "hello, world"
* end
*
* puts RubyVM::InstructionSequence.disasm(method(:hello))
*
* Produces:
*
* == disasm: <RubyVM::InstructionSequence:hello@/tmp/method.rb>============
* 0000 trace 8 ( 1)
* 0002 trace 1 ( 2)
* 0004 putself
* 0005 putstring "hello, world"
* 0007 send :puts, 1, nil, 8, <ic:0>
* 0013 trace 16 ( 3)
* 0015 leave ( 2)
*
* For a Proc:
*
* # /tmp/proc.rb
* p = proc { num = 1 + 2 }
* puts RubyVM::InstructionSequence.disasm(p)
*
* Produces:
*
* == disasm: <RubyVM::InstructionSequence:block in <main>@/tmp/proc.rb>===
* == catch table
* | catch type: redo st: 0000 ed: 0012 sp: 0000 cont: 0000
* | catch type: next st: 0000 ed: 0012 sp: 0000 cont: 0012
* |------------------------------------------------------------------------
* local table (size: 2, argc: 0 [opts: 0, rest: -1, post: 0, block: -1] s1)
* [ 2] num
* 0000 trace 1 ( 1)
* 0002 putobject 1
* 0004 putobject 2
* 0006 opt_plus <ic:1>
* 0008 dup
* 0009 setlocal num, 0
* 0012 leave
*
*/
static VALUE
iseqw_s_disasm(VALUE klass, VALUE body)
{
VALUE iseqw = iseqw_s_of(klass, body);
return NIL_P(iseqw) ? Qnil : rb_iseq_disasm(iseqw_check(iseqw));
}
const char *
ruby_node_name(int node)
{
switch (node) {
#include "node_name.inc"
default:
rb_bug("unknown node (%d)", node);
return 0;
}
}
#define DECL_SYMBOL(name) \
static VALUE sym_##name
#define INIT_SYMBOL(name) \
sym_##name = ID2SYM(rb_intern(#name))
static VALUE
register_label(struct st_table *table, unsigned long idx)
{
VALUE sym = rb_str_intern(rb_sprintf("label_%lu", idx));
st_insert(table, idx, sym);
return sym;
}
static VALUE
exception_type2symbol(VALUE type)
{
ID id;
switch (type) {
case CATCH_TYPE_RESCUE: CONST_ID(id, "rescue"); break;
case CATCH_TYPE_ENSURE: CONST_ID(id, "ensure"); break;
case CATCH_TYPE_RETRY: CONST_ID(id, "retry"); break;
case CATCH_TYPE_BREAK: CONST_ID(id, "break"); break;
case CATCH_TYPE_REDO: CONST_ID(id, "redo"); break;
case CATCH_TYPE_NEXT: CONST_ID(id, "next"); break;
default:
rb_bug("exception_type2symbol: unknown type %d", (int)type);
}
return ID2SYM(id);
}
static int
cdhash_each(VALUE key, VALUE value, VALUE ary)
{
rb_ary_push(ary, obj_resurrect(key));
rb_ary_push(ary, value);
return ST_CONTINUE;
}
static VALUE
iseq_data_to_ary(const rb_iseq_t *iseq)
{
unsigned int i;
long l;
size_t ti;
unsigned int pos;
unsigned int line = 0;
VALUE *seq, *iseq_original;
VALUE val = rb_ary_new();
VALUE type; /* Symbol */
VALUE locals = rb_ary_new();
VALUE params = rb_hash_new();
VALUE body = rb_ary_new(); /* [[:insn1, ...], ...] */
VALUE nbody;
VALUE exception = rb_ary_new(); /* [[....]] */
VALUE misc = rb_hash_new();
static VALUE insn_syms[VM_INSTRUCTION_SIZE];
struct st_table *labels_table = st_init_numtable();
DECL_SYMBOL(top);
DECL_SYMBOL(method);
DECL_SYMBOL(block);
DECL_SYMBOL(class);
DECL_SYMBOL(rescue);
DECL_SYMBOL(ensure);
DECL_SYMBOL(eval);
DECL_SYMBOL(main);
DECL_SYMBOL(defined_guard);
if (sym_top == 0) {
int i;
for (i=0; i<VM_INSTRUCTION_SIZE; i++) {
insn_syms[i] = ID2SYM(rb_intern(insn_name(i)));
}
INIT_SYMBOL(top);
INIT_SYMBOL(method);
INIT_SYMBOL(block);
INIT_SYMBOL(class);
INIT_SYMBOL(rescue);
INIT_SYMBOL(ensure);
INIT_SYMBOL(eval);
INIT_SYMBOL(main);
INIT_SYMBOL(defined_guard);
}
/* type */
switch (iseq->body->type) {
case ISEQ_TYPE_TOP: type = sym_top; break;
case ISEQ_TYPE_METHOD: type = sym_method; break;
case ISEQ_TYPE_BLOCK: type = sym_block; break;
case ISEQ_TYPE_CLASS: type = sym_class; break;
case ISEQ_TYPE_RESCUE: type = sym_rescue; break;
case ISEQ_TYPE_ENSURE: type = sym_ensure; break;
case ISEQ_TYPE_EVAL: type = sym_eval; break;
case ISEQ_TYPE_MAIN: type = sym_main; break;
case ISEQ_TYPE_DEFINED_GUARD: type = sym_defined_guard; break;
default: rb_bug("unsupported iseq type");
};
/* locals */
for (i=0; i<iseq->body->local_table_size; i++) {
ID lid = iseq->body->local_table[i];
if (lid) {
if (rb_id2str(lid)) {
rb_ary_push(locals, ID2SYM(lid));
}
else { /* hidden variable from id_internal() */
rb_ary_push(locals, ULONG2NUM(iseq->body->local_table_size-i+1));
}
}
else {
rb_ary_push(locals, ID2SYM(rb_intern("#arg_rest")));
}
}
/* params */
{
int j;
if (iseq->body->param.flags.has_opt) {
int len = iseq->body->param.opt_num + 1;
VALUE arg_opt_labels = rb_ary_new2(len);
for (j = 0; j < len; j++) {
VALUE l = register_label(labels_table, iseq->body->param.opt_table[j]);
rb_ary_push(arg_opt_labels, l);
}
rb_hash_aset(params, ID2SYM(rb_intern("opt")), arg_opt_labels);
}
/* commit */
if (iseq->body->param.flags.has_lead) rb_hash_aset(params, ID2SYM(rb_intern("lead_num")), INT2FIX(iseq->body->param.lead_num));
if (iseq->body->param.flags.has_post) rb_hash_aset(params, ID2SYM(rb_intern("post_num")), INT2FIX(iseq->body->param.post_num));
if (iseq->body->param.flags.has_post) rb_hash_aset(params, ID2SYM(rb_intern("post_start")), INT2FIX(iseq->body->param.post_start));
if (iseq->body->param.flags.has_rest) rb_hash_aset(params, ID2SYM(rb_intern("rest_start")), INT2FIX(iseq->body->param.rest_start));
if (iseq->body->param.flags.has_block) rb_hash_aset(params, ID2SYM(rb_intern("block_start")), INT2FIX(iseq->body->param.block_start));
if (iseq->body->param.flags.has_kw) {
VALUE keywords = rb_ary_new();
int i, j;
for (i=0; i<iseq->body->param.keyword->required_num; i++) {
rb_ary_push(keywords, ID2SYM(iseq->body->param.keyword->table[i]));
}
for (j=0; i<iseq->body->param.keyword->num; i++, j++) {
VALUE key = rb_ary_new_from_args(1, ID2SYM(iseq->body->param.keyword->table[i]));
if (iseq->body->param.keyword->default_values[j] != Qundef) {
rb_ary_push(key, iseq->body->param.keyword->default_values[j]);
}
rb_ary_push(keywords, key);
}
rb_hash_aset(params, ID2SYM(rb_intern("kwbits")),
INT2FIX(iseq->body->param.keyword->bits_start));
rb_hash_aset(params, ID2SYM(rb_intern("keyword")), keywords);
}
if (iseq->body->param.flags.has_kwrest) rb_hash_aset(params, ID2SYM(rb_intern("kwrest")), INT2FIX(iseq->body->param.keyword->rest_start));
if (iseq->body->param.flags.ambiguous_param0) rb_hash_aset(params, ID2SYM(rb_intern("ambiguous_param0")), Qtrue);
}
/* body */
iseq_original = rb_iseq_original_iseq((rb_iseq_t *)iseq);
for (seq = iseq_original; seq < iseq_original + iseq->body->iseq_size; ) {
VALUE insn = *seq++;
int j, len = insn_len(insn);
VALUE *nseq = seq + len - 1;
VALUE ary = rb_ary_new2(len);
rb_ary_push(ary, insn_syms[insn]);
for (j=0; j<len-1; j++, seq++) {
switch (insn_op_type(insn, j)) {
case TS_OFFSET: {
unsigned long idx = nseq - iseq_original + *seq;
rb_ary_push(ary, register_label(labels_table, idx));
break;
}
case TS_LINDEX:
case TS_NUM:
rb_ary_push(ary, INT2FIX(*seq));
break;
case TS_VALUE:
rb_ary_push(ary, obj_resurrect(*seq));
break;
case TS_ISEQ:
{
const rb_iseq_t *iseq = (rb_iseq_t *)*seq;
if (iseq) {
VALUE val = iseq_data_to_ary(rb_iseq_check(iseq));
rb_ary_push(ary, val);
}
else {
rb_ary_push(ary, Qnil);
}
}
break;
case TS_GENTRY:
{
struct rb_global_entry *entry = (struct rb_global_entry *)*seq;
rb_ary_push(ary, ID2SYM(entry->id));
}
break;
case TS_IC:
{
union iseq_inline_storage_entry *is = (union iseq_inline_storage_entry *)*seq;
rb_ary_push(ary, INT2FIX(is - iseq->body->is_entries));
}
break;
case TS_CALLINFO:
{
struct rb_call_info *ci = (struct rb_call_info *)*seq;
VALUE e = rb_hash_new();
int orig_argc = ci->orig_argc;
rb_hash_aset(e, ID2SYM(rb_intern("mid")), ci->mid ? ID2SYM(ci->mid) : Qnil);
rb_hash_aset(e, ID2SYM(rb_intern("flag")), UINT2NUM(ci->flag));
if (ci->flag & VM_CALL_KWARG) {
struct rb_call_info_with_kwarg *ci_kw = (struct rb_call_info_with_kwarg *)ci;
int i;
VALUE kw = rb_ary_new2((long)ci_kw->kw_arg->keyword_len);
orig_argc -= ci_kw->kw_arg->keyword_len;
for (i = 0; i < ci_kw->kw_arg->keyword_len; i++) {
rb_ary_push(kw, ci_kw->kw_arg->keywords[i]);
}
rb_hash_aset(e, ID2SYM(rb_intern("kw_arg")), kw);
}
rb_hash_aset(e, ID2SYM(rb_intern("orig_argc")),
INT2FIX(orig_argc));
rb_ary_push(ary, e);
}
break;
case TS_CALLCACHE:
rb_ary_push(ary, Qfalse);
break;
case TS_ID:
rb_ary_push(ary, ID2SYM(*seq));
break;
case TS_CDHASH:
{
VALUE hash = *seq;
VALUE val = rb_ary_new();
int i;
rb_hash_foreach(hash, cdhash_each, val);
for (i=0; i<RARRAY_LEN(val); i+=2) {
VALUE pos = FIX2INT(rb_ary_entry(val, i+1));
unsigned long idx = nseq - iseq_original + pos;
rb_ary_store(val, i+1,
register_label(labels_table, idx));
}
rb_ary_push(ary, val);
}
break;
case TS_FUNCPTR:
{
#if SIZEOF_VALUE <= SIZEOF_LONG
VALUE val = LONG2NUM((SIGNED_VALUE)*seq);
#else
VALUE val = LL2NUM((SIGNED_VALUE)*seq);
#endif
rb_ary_push(ary, val);
}
break;
default:
rb_bug("unknown operand: %c", insn_op_type(insn, j));
}
}
rb_ary_push(body, ary);
}
nbody = body;
/* exception */
if (iseq->body->catch_table) for (i=0; i<iseq->body->catch_table->size; i++) {
VALUE ary = rb_ary_new();
const struct iseq_catch_table_entry *entry = &iseq->body->catch_table->entries[i];
rb_ary_push(ary, exception_type2symbol(entry->type));
if (entry->iseq) {
rb_ary_push(ary, iseq_data_to_ary(rb_iseq_check(entry->iseq)));
}
else {
rb_ary_push(ary, Qnil);
}
rb_ary_push(ary, register_label(labels_table, entry->start));
rb_ary_push(ary, register_label(labels_table, entry->end));
rb_ary_push(ary, register_label(labels_table, entry->cont));
rb_ary_push(ary, UINT2NUM(entry->sp));
rb_ary_push(exception, ary);
}
/* make body with labels and insert line number */
body = rb_ary_new();
ti = 0;
for (l=0, pos=0; l<RARRAY_LEN(nbody); l++) {
VALUE ary = RARRAY_AREF(nbody, l);
st_data_t label;
if (st_lookup(labels_table, pos, &label)) {
rb_ary_push(body, (VALUE)label);
}
if (ti < iseq->body->line_info_size && iseq->body->line_info_table[ti].position == pos) {
line = iseq->body->line_info_table[ti].line_no;
rb_ary_push(body, INT2FIX(line));
ti++;
}
rb_ary_push(body, ary);
pos += RARRAY_LENINT(ary); /* reject too huge data */
}
RB_GC_GUARD(nbody);
st_free_table(labels_table);
rb_hash_aset(misc, ID2SYM(rb_intern("arg_size")), INT2FIX(iseq->body->param.size));
rb_hash_aset(misc, ID2SYM(rb_intern("local_size")), INT2FIX(iseq->body->local_table_size));
rb_hash_aset(misc, ID2SYM(rb_intern("stack_max")), INT2FIX(iseq->body->stack_max));
/* TODO: compatibility issue */
/*
* [:magic, :major_version, :minor_version, :format_type, :misc,
* :name, :path, :absolute_path, :start_lineno, :type, :locals, :args,
* :catch_table, :bytecode]
*/
rb_ary_push(val, rb_str_new2("YARVInstructionSequence/SimpleDataFormat"));
rb_ary_push(val, INT2FIX(ISEQ_MAJOR_VERSION)); /* major */
rb_ary_push(val, INT2FIX(ISEQ_MINOR_VERSION)); /* minor */
rb_ary_push(val, INT2FIX(1));
rb_ary_push(val, misc);
rb_ary_push(val, iseq->body->location.label);
rb_ary_push(val, rb_iseq_path(iseq));
rb_ary_push(val, rb_iseq_realpath(iseq));
rb_ary_push(val, iseq->body->location.first_lineno);
rb_ary_push(val, type);
rb_ary_push(val, locals);
rb_ary_push(val, params);
rb_ary_push(val, exception);
rb_ary_push(val, body);
return val;
}
VALUE
rb_iseq_parameters(const rb_iseq_t *iseq, int is_proc)
{
int i, r;
VALUE a, args = rb_ary_new2(iseq->body->param.size);
ID req, opt, rest, block, key, keyrest;
#define PARAM_TYPE(type) rb_ary_push(a = rb_ary_new2(2), ID2SYM(type))
#define PARAM_ID(i) iseq->body->local_table[(i)]
#define PARAM(i, type) ( \
PARAM_TYPE(type), \
rb_id2str(PARAM_ID(i)) ? \
rb_ary_push(a, ID2SYM(PARAM_ID(i))) : \
a)
CONST_ID(req, "req");
CONST_ID(opt, "opt");
if (is_proc) {
for (i = 0; i < iseq->body->param.lead_num; i++) {
PARAM_TYPE(opt);
rb_ary_push(a, rb_id2str(PARAM_ID(i)) ? ID2SYM(PARAM_ID(i)) : Qnil);
rb_ary_push(args, a);
}
}
else {
for (i = 0; i < iseq->body->param.lead_num; i++) {
rb_ary_push(args, PARAM(i, req));
}
}
r = iseq->body->param.lead_num + iseq->body->param.opt_num;
for (; i < r; i++) {
PARAM_TYPE(opt);
if (rb_id2str(PARAM_ID(i))) {
rb_ary_push(a, ID2SYM(PARAM_ID(i)));
}
rb_ary_push(args, a);
}
if (iseq->body->param.flags.has_rest) {
CONST_ID(rest, "rest");
rb_ary_push(args, PARAM(iseq->body->param.rest_start, rest));
}
r = iseq->body->param.post_start + iseq->body->param.post_num;
if (is_proc) {
for (i = iseq->body->param.post_start; i < r; i++) {
PARAM_TYPE(opt);
rb_ary_push(a, rb_id2str(PARAM_ID(i)) ? ID2SYM(PARAM_ID(i)) : Qnil);
rb_ary_push(args, a);
}
}
else {
for (i = iseq->body->param.post_start; i < r; i++) {
rb_ary_push(args, PARAM(i, req));
}
}
if (iseq->body->param.flags.has_kw) {
i = 0;
if (iseq->body->param.keyword->required_num > 0) {
ID keyreq;
CONST_ID(keyreq, "keyreq");
for (; i < iseq->body->param.keyword->required_num; i++) {
PARAM_TYPE(keyreq);
if (rb_id2str(iseq->body->param.keyword->table[i])) {
rb_ary_push(a, ID2SYM(iseq->body->param.keyword->table[i]));
}
rb_ary_push(args, a);
}
}
CONST_ID(key, "key");
for (; i < iseq->body->param.keyword->num; i++) {
PARAM_TYPE(key);
if (rb_id2str(iseq->body->param.keyword->table[i])) {
rb_ary_push(a, ID2SYM(iseq->body->param.keyword->table[i]));
}
rb_ary_push(args, a);
}
}
if (iseq->body->param.flags.has_kwrest) {
CONST_ID(keyrest, "keyrest");
rb_ary_push(args, PARAM(iseq->body->param.keyword->rest_start, keyrest));
}
if (iseq->body->param.flags.has_block) {
CONST_ID(block, "block");
rb_ary_push(args, PARAM(iseq->body->param.block_start, block));
}
return args;
}
VALUE
rb_iseq_defined_string(enum defined_type type)
{
static const char expr_names[][18] = {
"nil",
"instance-variable",
"local-variable",
"global-variable",
"class variable",
"constant",
"method",
"yield",
"super",
"self",
"true",
"false",
"assignment",
"expression",
};
const char *estr;
VALUE *defs, str;
if ((unsigned)(type - 1) >= (unsigned)numberof(expr_names)) return 0;
estr = expr_names[type - 1];
if (!estr[0]) return 0;
defs = GET_VM()->defined_strings;
if (!defs) {
defs = ruby_xcalloc(numberof(expr_names), sizeof(VALUE));
GET_VM()->defined_strings = defs;
}
str = defs[type-1];
if (!str) {
str = rb_str_new_cstr(estr);
OBJ_FREEZE(str);
defs[type-1] = str;
rb_gc_register_mark_object(str);
}
return str;
}
/* Experimental tracing support: trace(line) -> trace(specified_line)
* MRI Specific.
*/
int
rb_iseqw_line_trace_each(VALUE iseqw, int (*func)(int line, rb_event_flag_t *events_ptr, void *d), void *data)
{
int trace_num = 0;
unsigned int pos;
size_t insn;
const rb_iseq_t *iseq = iseqw_check(iseqw);
int cont = 1;
VALUE *iseq_original;
iseq_original = rb_iseq_original_iseq(iseq);
for (pos = 0; cont && pos < iseq->body->iseq_size; pos += insn_len(insn)) {
insn = iseq_original[pos];
if (insn == BIN(trace)) {
rb_event_flag_t current_events;
current_events = (rb_event_flag_t)iseq_original[pos+1];
if (current_events & RUBY_EVENT_LINE) {
rb_event_flag_t events = current_events & RUBY_EVENT_SPECIFIED_LINE;
trace_num++;
if (func) {
int line = find_line_no(iseq, pos);
/* printf("line: %d\n", line); */
cont = (*func)(line, &events, data);
if (current_events != events) {
VALUE *encoded = (VALUE *)iseq->body->iseq_encoded;
iseq_original[pos+1] = encoded[pos+1] =
(VALUE)(current_events | (events & RUBY_EVENT_SPECIFIED_LINE));
}
}
}
}
}
return trace_num;
}
static int
collect_trace(int line, rb_event_flag_t *events_ptr, void *ptr)
{
VALUE result = (VALUE)ptr;
rb_ary_push(result, INT2NUM(line));
return 1;
}
/*
* <b>Experimental MRI specific feature, only available as C level api.</b>
*
* Returns all +specified_line+ events.
*/
VALUE
rb_iseqw_line_trace_all(VALUE iseqw)
{
VALUE result = rb_ary_new();
rb_iseqw_line_trace_each(iseqw, collect_trace, (void *)result);
return result;
}
struct set_specifc_data {
int pos;
int set;
int prev; /* 1: set, 2: unset, 0: not found */
};
static int
line_trace_specify(int line, rb_event_flag_t *events_ptr, void *ptr)
{
struct set_specifc_data *data = (struct set_specifc_data *)ptr;
if (data->pos == 0) {
data->prev = *events_ptr & RUBY_EVENT_SPECIFIED_LINE ? 1 : 2;
if (data->set) {
*events_ptr = *events_ptr | RUBY_EVENT_SPECIFIED_LINE;
}
else {
*events_ptr = *events_ptr & ~RUBY_EVENT_SPECIFIED_LINE;
}
return 0; /* found */
}
else {
data->pos--;
return 1;
}
}
/*
* <b>Experimental MRI specific feature, only available as C level api.</b>
*
* Set a +specified_line+ event at the given line position, if the +set+
* parameter is +true+.
*
* This method is useful for building a debugger breakpoint at a specific line.
*
* A TypeError is raised if +set+ is not boolean.
*
* If +pos+ is a negative integer a TypeError exception is raised.
*/
VALUE
rb_iseqw_line_trace_specify(VALUE iseqval, VALUE pos, VALUE set)
{
struct set_specifc_data data;
data.prev = 0;
data.pos = NUM2INT(pos);
if (data.pos < 0) rb_raise(rb_eTypeError, "`pos' is negative");
switch (set) {
case Qtrue: data.set = 1; break;
case Qfalse: data.set = 0; break;
default:
rb_raise(rb_eTypeError, "`set' should be true/false");
}
rb_iseqw_line_trace_each(iseqval, line_trace_specify, (void *)&data);
if (data.prev == 0) {
rb_raise(rb_eTypeError, "`pos' is out of range.");
}
return data.prev == 1 ? Qtrue : Qfalse;
}
VALUE
rb_iseqw_local_variables(VALUE iseqval)
{
return rb_iseq_local_variables(iseqw_check(iseqval));
}
/*
* call-seq:
* iseq.to_binary(extra_data = nil) -> binary str
*
* Returns serialized iseq binary format data as a String object.
* A corresponding iseq object is created by
* RubyVM::InstructionSequence.load_from_binary() method.
*
* String extra_data will be saved with binary data.
* You can access this data with
* RubyVM::InstructionSequence.load_from_binary_extra_data(binary).
*
* Note that the translated binary data is not portable.
* You can not move this binary data to another machine.
* You can not use the binary data which is created by another
* version/another architecture of Ruby.
*/
static VALUE
iseqw_to_binary(int argc, VALUE *argv, VALUE self)
{
VALUE opt;
rb_scan_args(argc, argv, "01", &opt);
return iseq_ibf_dump(iseqw_check(self), opt);
}
/*
* call-seq:
* RubyVM::InstructionSequence.load_from_binary(binary) -> iseq
*
* Load an iseq object from binary format String object
* created by RubyVM::InstructionSequence.to_binary.
*
* This loader does not have a verifier, so that loading broken/modified
* binary causes critical problem.
*
* You should not load binary data provided by others.
* You should use binary data translated by yourself.
*/
static VALUE
iseqw_s_load_from_binary(VALUE self, VALUE str)
{
return iseqw_new(iseq_ibf_load(str));
}
/*
* call-seq:
* RubyVM::InstructionSequence.load_from_binary_extra_data(binary) -> str
*
* Load extra data embed into binary format String object.
*/
static VALUE
iseqw_s_load_from_binary_extra_data(VALUE self, VALUE str)
{
return iseq_ibf_load_extra_data(str);
}
/*
* Document-class: RubyVM::InstructionSequence
*
* The InstructionSequence class represents a compiled sequence of
* instructions for the Ruby Virtual Machine.
*
* With it, you can get a handle to the instructions that make up a method or
* a proc, compile strings of Ruby code down to VM instructions, and
* disassemble instruction sequences to strings for easy inspection. It is
* mostly useful if you want to learn how the Ruby VM works, but it also lets
* you control various settings for the Ruby iseq compiler.
*
* You can find the source for the VM instructions in +insns.def+ in the Ruby
* source.
*
* The instruction sequence results will almost certainly change as Ruby
* changes, so example output in this documentation may be different from what
* you see.
*/
void
Init_ISeq(void)
{
/* declare ::RubyVM::InstructionSequence */
rb_cISeq = rb_define_class_under(rb_cRubyVM, "InstructionSequence", rb_cObject);
rb_undef_alloc_func(rb_cISeq);
rb_define_method(rb_cISeq, "inspect", iseqw_inspect, 0);
rb_define_method(rb_cISeq, "disasm", iseqw_disasm, 0);
rb_define_method(rb_cISeq, "disassemble", iseqw_disasm, 0);
rb_define_method(rb_cISeq, "to_a", iseqw_to_a, 0);
rb_define_method(rb_cISeq, "eval", iseqw_eval, 0);
rb_define_method(rb_cISeq, "to_binary", iseqw_to_binary, -1);
rb_define_singleton_method(rb_cISeq, "load_from_binary", iseqw_s_load_from_binary, 1);
rb_define_singleton_method(rb_cISeq, "load_from_binary_extra_data", iseqw_s_load_from_binary_extra_data, 1);
/* location APIs */
rb_define_method(rb_cISeq, "path", iseqw_path, 0);
rb_define_method(rb_cISeq, "absolute_path", iseqw_absolute_path, 0);
rb_define_method(rb_cISeq, "label", iseqw_label, 0);
rb_define_method(rb_cISeq, "base_label", iseqw_base_label, 0);
rb_define_method(rb_cISeq, "first_lineno", iseqw_first_lineno, 0);
#if 0
/* Now, it is experimental. No discussions, no tests. */
/* They can be used from C level. Please give us feedback. */
rb_define_method(rb_cISeq, "line_trace_all", rb_iseqw_line_trace_all, 0);
rb_define_method(rb_cISeq, "line_trace_specify", rb_iseqw_line_trace_specify, 2);
#else
(void)rb_iseqw_line_trace_all;
(void)rb_iseqw_line_trace_specify;
#endif
#if 0 /* TBD */
rb_define_private_method(rb_cISeq, "marshal_dump", iseqw_marshal_dump, 0);
rb_define_private_method(rb_cISeq, "marshal_load", iseqw_marshal_load, 1);
/* disable this feature because there is no verifier. */
rb_define_singleton_method(rb_cISeq, "load", iseq_s_load, -1);
#endif
(void)iseq_s_load;
rb_define_singleton_method(rb_cISeq, "compile", iseqw_s_compile, -1);
rb_define_singleton_method(rb_cISeq, "new", iseqw_s_compile, -1);
rb_define_singleton_method(rb_cISeq, "compile_file", iseqw_s_compile_file, -1);
rb_define_singleton_method(rb_cISeq, "compile_option", iseqw_s_compile_option_get, 0);
rb_define_singleton_method(rb_cISeq, "compile_option=", iseqw_s_compile_option_set, 1);
rb_define_singleton_method(rb_cISeq, "disasm", iseqw_s_disasm, 1);
rb_define_singleton_method(rb_cISeq, "disassemble", iseqw_s_disasm, 1);
rb_define_singleton_method(rb_cISeq, "of", iseqw_s_of, 1);
rb_undef_method(CLASS_OF(rb_cISeq), "translate");
rb_undef_method(CLASS_OF(rb_cISeq), "load_iseq");
}
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