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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
**********************************************************************/
#define RUBY_VM_INSNS_INFO 1
/* #define RUBY_MARK_FREE_DEBUG 1 */
#include "ruby/internal/config.h"
#ifdef HAVE_DLADDR
# include <dlfcn.h>
#endif
#include "eval_intern.h"
#include "gc.h"
#include "id_table.h"
#include "internal.h"
#include "internal/bits.h"
#include "internal/class.h"
#include "internal/compile.h"
#include "internal/error.h"
#include "internal/file.h"
#include "internal/hash.h"
#include "internal/parse.h"
#include "internal/sanitizers.h"
#include "internal/symbol.h"
#include "internal/thread.h"
#include "internal/variable.h"
#include "iseq.h"
#include "mjit.h"
#include "ruby/util.h"
#include "vm_core.h"
#include "vm_callinfo.h"
#include "yjit.h"
#include "ruby/ractor.h"
#include "builtin.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;
case T_HASH:
obj = rb_hash_resurrect(obj);
break;
default:
break;
}
}
return obj;
}
static void
free_arena(struct iseq_compile_data_storage *cur)
{
struct iseq_compile_data_storage *next;
while (cur) {
next = cur->next;
ruby_xfree(cur);
cur = next;
}
}
static void
compile_data_free(struct iseq_compile_data *compile_data)
{
if (compile_data) {
free_arena(compile_data->node.storage_head);
free_arena(compile_data->insn.storage_head);
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 && iseq->body) {
struct rb_iseq_constant_body *const body = iseq->body;
mjit_free_iseq(iseq); /* Notify MJIT */
rb_yjit_iseq_free(body);
ruby_xfree((void *)body->iseq_encoded);
ruby_xfree((void *)body->insns_info.body);
if (body->insns_info.positions) ruby_xfree((void *)body->insns_info.positions);
#if VM_INSN_INFO_TABLE_IMPL == 2
if (body->insns_info.succ_index_table) ruby_xfree(body->insns_info.succ_index_table);
#endif
if (LIKELY(body->local_table != rb_iseq_shared_exc_local_tbl))
ruby_xfree((void *)body->local_table);
ruby_xfree((void *)body->is_entries);
if (body->call_data) {
ruby_xfree(body->call_data);
}
ruby_xfree((void *)body->catch_table);
ruby_xfree((void *)body->param.opt_table);
if (body->param.keyword != NULL) {
ruby_xfree((void *)body->param.keyword->default_values);
ruby_xfree((void *)body->param.keyword);
}
compile_data_free(ISEQ_COMPILE_DATA(iseq));
if (body->outer_variables) rb_id_table_free(body->outer_variables);
ruby_xfree(body);
}
if (iseq && ISEQ_EXECUTABLE_P(iseq) && iseq->aux.exec.local_hooks) {
rb_hook_list_free(iseq->aux.exec.local_hooks);
}
RUBY_FREE_LEAVE("iseq");
}
#if OPT_DIRECT_THREADED_CODE || OPT_CALL_THREADED_CODE
static VALUE
rb_vm_insn_addr2insn2(const void *addr)
{
return (VALUE)rb_vm_insn_addr2insn(addr);
}
#endif
static VALUE
rb_vm_insn_null_translator(const void *addr)
{
return (VALUE)addr;
}
typedef VALUE iseq_value_itr_t(void *ctx, VALUE obj);
typedef VALUE rb_vm_insns_translator_t(const void *addr);
static int
iseq_extract_values(VALUE *code, size_t pos, iseq_value_itr_t * func, void *data, rb_vm_insns_translator_t * translator)
{
VALUE insn = translator((void *)code[pos]);
int len = insn_len(insn);
int op_no;
const char *types = insn_op_types(insn);
for (op_no = 0; types[op_no]; op_no++) {
char type = types[op_no];
switch (type) {
case TS_CDHASH:
case TS_ISEQ:
case TS_VALUE:
{
VALUE op = code[pos + op_no + 1];
if (!SPECIAL_CONST_P(op)) {
VALUE newop = func(data, op);
if (newop != op) {
code[pos + op_no + 1] = newop;
}
}
}
break;
case TS_IC:
{
IC ic = (IC)code[pos + op_no + 1];
if (ic->entry) {
VALUE nv = func(data, (VALUE)ic->entry);
if ((VALUE)ic->entry != nv) {
ic->entry = (void *)nv;
}
}
}
break;
case TS_IVC:
{
IVC ivc = (IVC)code[pos + op_no + 1];
if (ivc->entry) {
if (RB_TYPE_P(ivc->entry->class_value, T_NONE)) {
rb_bug("!! %u", ivc->entry->index);
}
VALUE nv = func(data, ivc->entry->class_value);
if (ivc->entry->class_value != nv) {
ivc->entry->class_value = nv;
}
}
}
break;
case TS_ISE:
{
union iseq_inline_storage_entry *const is = (union iseq_inline_storage_entry *)code[pos + op_no + 1];
if (is->once.value) {
VALUE nv = func(data, is->once.value);
if (is->once.value != nv) {
is->once.value = nv;
}
}
}
break;
default:
break;
}
}
return len;
}
static void
rb_iseq_each_value(const rb_iseq_t *iseq, iseq_value_itr_t * func, void *data)
{
unsigned int size;
VALUE *code;
size_t n;
rb_vm_insns_translator_t *const translator =
#if OPT_DIRECT_THREADED_CODE || OPT_CALL_THREADED_CODE
(FL_TEST((VALUE)iseq, ISEQ_TRANSLATED)) ? rb_vm_insn_addr2insn2 :
#endif
rb_vm_insn_null_translator;
const struct rb_iseq_constant_body *const body = iseq->body;
size = body->iseq_size;
code = body->iseq_encoded;
for (n = 0; n < size;) {
n += iseq_extract_values(code, n, func, data, translator);
}
}
static VALUE
update_each_insn_value(void *ctx, VALUE obj)
{
return rb_gc_location(obj);
}
void
rb_iseq_update_references(rb_iseq_t *iseq)
{
if (iseq->body) {
struct rb_iseq_constant_body *body = iseq->body;
body->variable.coverage = rb_gc_location(body->variable.coverage);
body->variable.pc2branchindex = rb_gc_location(body->variable.pc2branchindex);
body->variable.script_lines = rb_gc_location(body->variable.script_lines);
body->location.label = rb_gc_location(body->location.label);
body->location.base_label = rb_gc_location(body->location.base_label);
body->location.pathobj = rb_gc_location(body->location.pathobj);
if (body->local_iseq) {
body->local_iseq = (struct rb_iseq_struct *)rb_gc_location((VALUE)body->local_iseq);
}
if (body->parent_iseq) {
body->parent_iseq = (struct rb_iseq_struct *)rb_gc_location((VALUE)body->parent_iseq);
}
if (body->mandatory_only_iseq) {
body->mandatory_only_iseq = (struct rb_iseq_struct *)rb_gc_location((VALUE)body->mandatory_only_iseq);
}
if (body->call_data) {
for (unsigned int i=0; i<body->ci_size; i++) {
struct rb_call_data *cds = body->call_data;
if (!SPECIAL_CONST_P((VALUE)cds[i].ci)) {
cds[i].ci = (struct rb_callinfo *)rb_gc_location((VALUE)cds[i].ci);
}
cds[i].cc = (struct rb_callcache *)rb_gc_location((VALUE)cds[i].cc);
}
}
if (FL_TEST((VALUE)iseq, ISEQ_MARKABLE_ISEQ)) {
rb_iseq_each_value(iseq, update_each_insn_value, NULL);
VALUE *original_iseq = ISEQ_ORIGINAL_ISEQ(iseq);
if (original_iseq) {
size_t n = 0;
const unsigned int size = body->iseq_size;
while (n < size) {
n += iseq_extract_values(original_iseq, n, update_each_insn_value, NULL, rb_vm_insn_null_translator);
}
}
}
if (body->param.flags.has_kw && ISEQ_COMPILE_DATA(iseq) == NULL) {
int i, j;
i = body->param.keyword->required_num;
for (j = 0; i < body->param.keyword->num; i++, j++) {
VALUE obj = body->param.keyword->default_values[j];
if (obj != Qundef) {
body->param.keyword->default_values[j] = rb_gc_location(obj);
}
}
}
if (body->catch_table) {
struct iseq_catch_table *table = body->catch_table;
unsigned int i;
for (i = 0; i < table->size; i++) {
struct iseq_catch_table_entry *entry;
entry = UNALIGNED_MEMBER_PTR(table, entries[i]);
if (entry->iseq) {
entry->iseq = (rb_iseq_t *)rb_gc_location((VALUE)entry->iseq);
}
}
}
#if USE_MJIT
mjit_update_references(iseq);
#endif
rb_yjit_iseq_update_references(body);
}
}
static VALUE
each_insn_value(void *ctx, VALUE obj)
{
rb_gc_mark_movable(obj);
return obj;
}
void
rb_iseq_mark(const rb_iseq_t *iseq)
{
RUBY_MARK_ENTER("iseq");
RUBY_MARK_UNLESS_NULL(iseq->wrapper);
if (iseq->body) {
const struct rb_iseq_constant_body *const body = iseq->body;
if (FL_TEST((VALUE)iseq, ISEQ_MARKABLE_ISEQ)) {
rb_iseq_each_value(iseq, each_insn_value, NULL);
}
rb_gc_mark_movable(body->variable.coverage);
rb_gc_mark_movable(body->variable.pc2branchindex);
rb_gc_mark_movable(body->variable.script_lines);
rb_gc_mark_movable(body->location.label);
rb_gc_mark_movable(body->location.base_label);
rb_gc_mark_movable(body->location.pathobj);
RUBY_MARK_MOVABLE_UNLESS_NULL((VALUE)body->mandatory_only_iseq);
RUBY_MARK_MOVABLE_UNLESS_NULL((VALUE)body->parent_iseq);
if (body->call_data) {
struct rb_call_data *cds = (struct rb_call_data *)body->call_data;
for (unsigned int i=0; i<body->ci_size; i++) {
const struct rb_callinfo *ci = cds[i].ci;
const struct rb_callcache *cc = cds[i].cc;
if (vm_ci_markable(ci)) {
rb_gc_mark_movable((VALUE)ci);
}
if (cc) {
VM_ASSERT((cc->flags & VM_CALLCACHE_ON_STACK) == 0);
if (vm_cc_markable(cc)) {
if (!vm_cc_invalidated_p(cc)) {
rb_gc_mark_movable((VALUE)cc);
}
else {
cds[i].cc = rb_vm_empty_cc();
}
}
}
}
}
if (body->param.flags.has_kw && ISEQ_COMPILE_DATA(iseq) == NULL) {
const struct rb_iseq_param_keyword *const keyword = body->param.keyword;
int i, j;
i = keyword->required_num;
for (j = 0; i < keyword->num; i++, j++) {
VALUE obj = keyword->default_values[j];
if (!SPECIAL_CONST_P(obj)) {
rb_gc_mark_movable(obj);
}
}
}
if (body->catch_table) {
const struct iseq_catch_table *table = body->catch_table;
unsigned int i;
for (i = 0; i < table->size; i++) {
const struct iseq_catch_table_entry *entry;
entry = UNALIGNED_MEMBER_PTR(table, entries[i]);
if (entry->iseq) {
rb_gc_mark_movable((VALUE)entry->iseq);
}
}
}
#if USE_MJIT
mjit_mark_cc_entries(body);
#endif
rb_yjit_iseq_mark(body);
}
if (FL_TEST_RAW((VALUE)iseq, ISEQ_NOT_LOADED_YET)) {
rb_gc_mark(iseq->aux.loader.obj);
}
else if (FL_TEST_RAW((VALUE)iseq, ISEQ_USE_COMPILE_DATA)) {
const struct iseq_compile_data *const compile_data = ISEQ_COMPILE_DATA(iseq);
rb_iseq_mark_insn_storage(compile_data->insn.storage_head);
RUBY_MARK_UNLESS_NULL(compile_data->err_info);
if (RTEST(compile_data->catch_table_ary)) {
rb_gc_mark(compile_data->catch_table_ary);
}
VM_ASSERT(compile_data != NULL);
}
else {
/* executable */
VM_ASSERT(ISEQ_EXECUTABLE_P(iseq));
if (iseq->aux.exec.local_hooks) {
rb_hook_list_mark(iseq->aux.exec.local_hooks);
}
}
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;
}
size_t
rb_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 (ISEQ_EXECUTABLE_P(iseq) && body) {
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->call_data */
size += body->ci_size * sizeof(struct rb_call_data);
// TODO: should we count imemo_callinfo?
}
compile_data = ISEQ_COMPILE_DATA(iseq);
if (compile_data) {
struct iseq_compile_data_storage *cur;
size += sizeof(struct iseq_compile_data);
cur = compile_data->node.storage_head;
while (cur) {
size += cur->size + offsetof(struct iseq_compile_data_storage, buff);
cur = cur->next;
}
}
return size;
}
struct rb_iseq_constant_body *
rb_iseq_constant_body_alloc(void)
{
struct rb_iseq_constant_body *iseq_body;
iseq_body = ZALLOC(struct rb_iseq_constant_body);
return iseq_body;
}
static rb_iseq_t *
iseq_alloc(void)
{
rb_iseq_t *iseq = iseq_imemo_alloc();
iseq->body = rb_iseq_constant_body_alloc();
return iseq;
}
VALUE
rb_iseq_pathobj_new(VALUE path, VALUE realpath)
{
VALUE pathobj;
VM_ASSERT(RB_TYPE_P(path, T_STRING));
VM_ASSERT(NIL_P(realpath) || 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, const int node_id)
{
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->node_id = node_id;
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)
{
struct rb_iseq_constant_body *const body = iseq->body;
const VALUE type = body->type;
/* set class nest stack */
if (type == ISEQ_TYPE_TOP) {
body->local_iseq = iseq;
}
else if (type == ISEQ_TYPE_METHOD || type == ISEQ_TYPE_CLASS) {
body->local_iseq = iseq;
}
else if (piseq) {
body->local_iseq = piseq->body->local_iseq;
}
if (piseq) {
body->parent_iseq = piseq;
}
if (type == ISEQ_TYPE_MAIN) {
body->local_iseq = iseq;
}
}
static struct iseq_compile_data_storage *
new_arena(void)
{
struct iseq_compile_data_storage * new_arena =
(struct iseq_compile_data_storage *)
ALLOC_N(char, INITIAL_ISEQ_COMPILE_DATA_STORAGE_BUFF_SIZE +
offsetof(struct iseq_compile_data_storage, buff));
new_arena->pos = 0;
new_arena->next = 0;
new_arena->size = INITIAL_ISEQ_COMPILE_DATA_STORAGE_BUFF_SIZE;
return new_arena;
}
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 int node_id,
const rb_iseq_t *parent, int isolated_depth, enum iseq_type type,
VALUE script_lines, const rb_compile_option_t *option)
{
VALUE coverage = Qfalse;
VALUE err_info = Qnil;
struct rb_iseq_constant_body *const body = iseq->body;
if (parent && (type == ISEQ_TYPE_MAIN || type == ISEQ_TYPE_TOP))
err_info = Qfalse;
body->type = type;
set_relation(iseq, parent);
name = rb_fstring(name);
iseq_location_setup(iseq, name, path, realpath, first_lineno, code_location, node_id);
if (iseq != body->local_iseq) {
RB_OBJ_WRITE(iseq, &body->location.base_label, body->local_iseq->body->location.label);
}
ISEQ_COVERAGE_SET(iseq, Qnil);
ISEQ_ORIGINAL_ISEQ_CLEAR(iseq);
body->variable.flip_count = 0;
if (NIL_P(script_lines)) {
RB_OBJ_WRITE(iseq, &body->variable.script_lines, Qnil);
}
else {
RB_OBJ_WRITE(iseq, &body->variable.script_lines, rb_ractor_make_shareable(script_lines));
}
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)->catch_table_ary, Qnil);
ISEQ_COMPILE_DATA(iseq)->node.storage_head = ISEQ_COMPILE_DATA(iseq)->node.storage_current = new_arena();
ISEQ_COMPILE_DATA(iseq)->insn.storage_head = ISEQ_COMPILE_DATA(iseq)->insn.storage_current = new_arena();
ISEQ_COMPILE_DATA(iseq)->isolated_depth = isolated_depth;
ISEQ_COMPILE_DATA(iseq)->option = option;
ISEQ_COMPILE_DATA(iseq)->ivar_cache_table = NULL;
ISEQ_COMPILE_DATA(iseq)->builtin_function_table = GET_VM()->builtin_function_table;
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);
if (coverage && ISEQ_BRANCH_COVERAGE(iseq))
ISEQ_PC2BRANCHINDEX_SET(iseq, rb_ary_tmp_new(0));
return Qtrue;
}
#if VM_CHECK_MODE > 0 && VM_INSN_INFO_TABLE_IMPL > 0
static void validate_get_insn_info(const rb_iseq_t *iseq);
#endif
void
rb_iseq_insns_info_encode_positions(const rb_iseq_t *iseq)
{
#if VM_INSN_INFO_TABLE_IMPL == 2
/* create succ_index_table */
struct rb_iseq_constant_body *const body = iseq->body;
int size = body->insns_info.size;
int max_pos = body->iseq_size;
int *data = (int *)body->insns_info.positions;
if (body->insns_info.succ_index_table) ruby_xfree(body->insns_info.succ_index_table);
body->insns_info.succ_index_table = succ_index_table_create(max_pos, data, size);
#if VM_CHECK_MODE == 0
ruby_xfree(body->insns_info.positions);
body->insns_info.positions = NULL;
#endif
#endif
}
#if VM_INSN_INFO_TABLE_IMPL == 2
unsigned int *
rb_iseq_insns_info_decode_positions(const struct rb_iseq_constant_body *body)
{
int size = body->insns_info.size;
int max_pos = body->iseq_size;
struct succ_index_table *sd = body->insns_info.succ_index_table;
return succ_index_table_invert(max_pos, sd, size);
}
#endif
void
rb_iseq_init_trace(rb_iseq_t *iseq)
{
iseq->aux.exec.global_trace_events = 0;
if (ruby_vm_event_enabled_global_flags & ISEQ_TRACE_EVENTS) {
rb_iseq_trace_set(iseq, ruby_vm_event_enabled_global_flags & ISEQ_TRACE_EVENTS);
}
}
static VALUE
finish_iseq_build(rb_iseq_t *iseq)
{
struct iseq_compile_data *data = ISEQ_COMPILE_DATA(iseq);
const struct rb_iseq_constant_body *const body = iseq->body;
VALUE err = data->err_info;
ISEQ_COMPILE_DATA_CLEAR(iseq);
compile_data_free(data);
#if VM_CHECK_MODE > 0 && VM_INSN_INFO_TABLE_IMPL > 0
validate_get_insn_info(iseq);
#endif
if (RTEST(err)) {
VALUE path = pathobj_path(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);
}
RB_DEBUG_COUNTER_INC(iseq_num);
RB_DEBUG_COUNTER_ADD(iseq_cd_num, iseq->body->ci_size);
rb_iseq_init_trace(iseq);
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
}
static 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 (NIL_P(opt)) {
*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_with_size(11);
#define SET_COMPILE_OPTION(o, h, mem) \
rb_hash_aset((h), ID2SYM(rb_intern(#mem)), RBOOL((o)->mem))
#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,
0, type, &COMPILE_OPTION_DEFAULT);
}
static int
ast_line_count(const rb_ast_body_t *ast)
{
if (ast->script_lines == Qfalse) {
// this occurs when failed to parse the source code with a syntax error
return 0;
}
if (RB_TYPE_P(ast->script_lines, T_ARRAY)){
return (int)RARRAY_LEN(ast->script_lines);
}
return FIX2INT(ast->script_lines);
}
rb_iseq_t *
rb_iseq_new_top(const rb_ast_body_t *ast, VALUE name, VALUE path, VALUE realpath, const rb_iseq_t *parent)
{
VALUE coverages = rb_get_coverages();
if (RTEST(coverages)) {
int line_count = ast_line_count(ast);
if (line_count >= 0) {
int len = (rb_get_coverage_mode() & COVERAGE_TARGET_ONESHOT_LINES) ? 0 : line_count;
VALUE coverage = rb_default_coverage(len);
rb_hash_aset(coverages, path, coverage);
}
}
return rb_iseq_new_with_opt(ast, name, path, realpath, INT2FIX(0), parent, 0,
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, int opt)
{
return rb_iseq_new_with_opt(ast, rb_fstring_lit("<main>"),
path, realpath, INT2FIX(0),
parent, 0, ISEQ_TYPE_MAIN, opt ? &COMPILE_OPTION_DEFAULT : &COMPILE_OPTION_FALSE);
}
rb_iseq_t *
rb_iseq_new_eval(const rb_ast_body_t *ast, VALUE name, VALUE path, VALUE realpath, VALUE first_lineno, const rb_iseq_t *parent, int isolated_depth)
{
return rb_iseq_new_with_opt(ast, name, path, realpath, first_lineno,
parent, isolated_depth, ISEQ_TYPE_EVAL, &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, int isolated_depth,
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;
if (option) {
new_opt = *option;
}
else {
new_opt = COMPILE_OPTION_DEFAULT;
}
if (ast && ast->compile_option) rb_iseq_make_compile_option(&new_opt, ast->compile_option);
VALUE script_lines = Qnil;
if (ast && !FIXNUM_P(ast->script_lines) && ast->script_lines) {
script_lines = ast->script_lines;
}
else if (parent) {
script_lines = parent->body->variable.script_lines;
}
prepare_iseq_build(iseq, name, path, realpath, first_lineno, node ? &node->nd_loc : NULL, node ? nd_node_id(node) : -1,
parent, isolated_depth, type, script_lines, &new_opt);
rb_iseq_compile_node(iseq, node);
finish_iseq_build(iseq);
return iseq_translate(iseq);
}
rb_iseq_t *
rb_iseq_new_with_callback(
const struct rb_iseq_new_with_callback_callback_func * 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, -1, parent, 0, type, Qnil, option);
rb_iseq_compile_callback(iseq, ifunc);
finish_iseq_build(iseq);
return 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)
{