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iseq.c
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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_VM_INSNS_INFO 1
/* #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);
#if VM_INSN_INFO_TABLE_IMPL == 2
static struct succ_index_table *succ_index_table_create(int max_pos, int *data, int size);
static unsigned int *succ_index_table_invert(int max_pos, struct succ_index_table *sd, int size);
static int succ_index_lookup(const struct succ_index_table *sd, int x);
#endif
#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->insns_info.body);
if (iseq->body->insns_info.positions) ruby_xfree((void *)iseq->body->insns_info.positions);
#if VM_INSN_INFO_TABLE_IMPL == 2
if (iseq->body->insns_info.succ_index_table) ruby_xfree(iseq->body->insns_info.succ_index_table);
#endif
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) != NULL) {
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->insns_info.size * (sizeof(struct iseq_insn_info_entry) + sizeof(unsigned int));
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 + offsetof(struct iseq_compile_data_storage, buff);
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, const rb_code_location_t *code_location)
{
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;
if (code_location) {
loc->code_location = *code_location;
}
else {
loc->code_location.beg_pos.lineno = 0;
loc->code_location.beg_pos.column = 0;
loc->code_location.end_pos.lineno = -1;
loc->code_location.end_pos.column = -1;
}
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_code_location_t *code_location,
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, code_location);
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_ALLOC(iseq);
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 +
offsetof(struct iseq_compile_data_storage, buff));
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)->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;
}
#if VM_CHECK_MODE > 0 && VM_INSN_INFO_TABLE_IMPL > 0
static void validate_get_insn_info(rb_iseq_t *iseq);
#endif
void
rb_iseq_insns_info_encode_positions(const rb_iseq_t *iseq)
{
#if VM_INSN_INFO_TABLE_IMPL == 2
int size = iseq->body->insns_info.size;
int max_pos = iseq->body->iseq_size;
int *data = (int *)iseq->body->insns_info.positions;
if (iseq->body->insns_info.succ_index_table) ruby_xfree(iseq->body->insns_info.succ_index_table);
iseq->body->insns_info.succ_index_table = succ_index_table_create(max_pos, data, size);
#if VM_CHECK_MODE == 0
ruby_xfree(iseq->body->insns_info.positions);
iseq->body->insns_info.positions = NULL;
#endif
#endif
}
void
rb_iseq_insns_info_decode_positions(const rb_iseq_t *iseq)
{
#if VM_INSN_INFO_TABLE_IMPL == 2
int size = iseq->body->insns_info.size;
int max_pos = iseq->body->iseq_size;
struct succ_index_table *sd = iseq->body->insns_info.succ_index_table;
if (iseq->body->insns_info.positions) ruby_xfree(iseq->body->insns_info.positions);
iseq->body->insns_info.positions = succ_index_table_invert(max_pos, sd, size);
#endif
}
static VALUE
finish_iseq_build(rb_iseq_t *iseq)
{
struct iseq_compile_data *data = ISEQ_COMPILE_DATA(iseq);
VALUE err = data->err_info;
ISEQ_COMPILE_DATA_CLEAR(iseq);
compile_data_free(data);
#if VM_INSN_INFO_TABLE_IMPL == 2 /* succinct bitvector */
/* create succ_index_table */
if (iseq->body->insns_info.succ_index_table == NULL) {
rb_iseq_insns_info_encode_positions(iseq);
}
#endif
#if VM_CHECK_MODE > 0 && VM_INSN_INFO_TABLE_IMPL > 0
validate_get_insn_info(iseq);
#endif
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);
}
iseq->aux.trace_events = 0;
if (ruby_vm_event_enabled_flags & ISEQ_TRACE_EVENTS) {
rb_iseq_trace_set(iseq, ruby_vm_event_enabled_flags & ISEQ_TRACE_EVENTS);
}
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_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, 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, 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(const rb_ast_body_t *ast, VALUE name, VALUE path, VALUE realpath,
const rb_iseq_t *parent, enum iseq_type type)
{
return rb_iseq_new_with_opt(ast, name, path, realpath, INT2FIX(0), parent, type,
&COMPILE_OPTION_DEFAULT);
}
rb_iseq_t *
rb_iseq_new_top(const rb_ast_body_t *ast, VALUE name, VALUE path, VALUE realpath, const rb_iseq_t *parent)
{
return rb_iseq_new_with_opt(ast, name, path, realpath, INT2FIX(0), parent, ISEQ_TYPE_TOP,
&COMPILE_OPTION_DEFAULT);
}
rb_iseq_t *
rb_iseq_new_main(const rb_ast_body_t *ast, VALUE path, VALUE realpath, const rb_iseq_t *parent)
{
return rb_iseq_new_with_opt(ast, 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(const rb_ast_body_t *ast, VALUE name, VALUE path, VALUE realpath,
VALUE first_lineno, const rb_iseq_t *parent,
enum iseq_type type, const rb_compile_option_t *option)
{
const NODE *node = ast ? ast->root : 0;
/* TODO: argument check */
rb_iseq_t *iseq = iseq_alloc();
rb_compile_option_t new_opt;
new_opt = option ? *option : COMPILE_OPTION_DEFAULT;
if (ast && ast->compile_option) rb_iseq_make_compile_option(&new_opt, ast->compile_option);
prepare_iseq_build(iseq, name, path, realpath, first_lineno, node ? &node->nd_loc : NULL, parent, type, &new_opt);
rb_iseq_compile_node(iseq, node);
finish_iseq_build(iseq);
return iseq_translate(iseq);
}
rb_iseq_t *
rb_iseq_new_ifunc(const struct vm_ifunc *ifunc, 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, NULL, parent, type, option);
rb_iseq_compile_ifunc(iseq, ifunc);
finish_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_to_array_type(v)
#define CHECK_HASH(v) rb_to_hash_type(v)
#define CHECK_STRING(v) rb_str_to_str(v)
#define CHECK_SYMBOL(v) rb_to_symbol_type(v)
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_plain = rb_intern("plain");
/* 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_plain) return ISEQ_TYPE_PLAIN;
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, code_location;
VALUE type, body, locals, params, exception;
st_data_t iseq_type;
rb_compile_option_t option;
int i = 0;
rb_code_location_t tmp_loc = { {0, 0}, {-1, -1} };
/* [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));
}
code_location = rb_hash_aref(misc, ID2SYM(rb_intern("code_location")));
if (RB_TYPE_P(code_location, T_ARRAY) && RARRAY_LEN(code_location) == 4) {
tmp_loc.beg_pos.lineno = NUM2INT(rb_ary_entry(code_location, 0));
tmp_loc.beg_pos.column = NUM2INT(rb_ary_entry(code_location, 1));
tmp_loc.end_pos.lineno = NUM2INT(rb_ary_entry(code_location, 2));
tmp_loc.end_pos.column = NUM2INT(rb_ary_entry(code_location, 3));
}
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, &tmp_loc,
parent, (enum iseq_type)iseq_type, &option);
rb_iseq_build_from_ary(iseq, misc, locals, params, exception, body);
finish_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_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
rb_ast_t *(*parse)(VALUE vparser, VALUE fname, VALUE file, int start);
int ln;
rb_ast_t *INITIALIZED ast;
/* 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);
ast = (*parse)(parser, file, src, ln);
}
if (!ast->body.root) {
rb_ast_dispose(ast);
rb_exc_raise(GET_EC()->errinfo);
}
else {
INITIALIZED VALUE label = parent ?
parent->body->location.label :
rb_fstring_cstr("<compiled>");
iseq = rb_iseq_new_with_opt(&ast->body, label, file, realpath, line,
parent, type, &option);
rb_ast_dispose(ast);
}
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;
}
}
void
rb_iseq_code_location(const rb_iseq_t *iseq, int *beg_pos_lineno, int *beg_pos_column, int *end_pos_lineno, int *end_pos_column)
{
if (beg_pos_lineno) *beg_pos_lineno = iseq->body->location.code_location.beg_pos.lineno;
if (beg_pos_column) *beg_pos_column = iseq->body->location.code_location.beg_pos.column;
if (end_pos_lineno) *end_pos_lineno = iseq->body->location.code_location.end_pos.lineno;
if (end_pos_column) *end_pos_column = iseq->body->location.code_location.end_pos.column;
}
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, ret;
rb_ast_t *ast;
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);
ast = rb_parser_compile_file_path(parser, file, f, NUM2INT(line));
if (!ast->body.root) exc = GET_EC()->errinfo;
rb_io_close(f);
if (!ast->body.root) {
rb_ast_dispose(ast);
rb_exc_raise(exc);
}
make_compile_option(&option, opt);
ret = iseqw_new(rb_iseq_new_with_opt(&ast->body, rb_fstring_cstr("<main>"),
file,
rb_realpath_internal(Qnil, file, 1),
line, NULL, ISEQ_TYPE_TOP, &option));
rb_ast_dispose(ast);
return ret;
}
/*
* call-seq:
* InstructionSequence.compile_option = options
*
* Sets the default values for various optimizations in the Ruby iseq