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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 "ruby/ruby.h"
#include "internal.h"
#include "eval_intern.h"
/* #define RUBY_MARK_FREE_DEBUG 1 */
#include "gc.h"
#include "vm_core.h"
#include "iseq.h"
#define numberof(array) (int)(sizeof(array) / sizeof((array)[0]))
#include "insns.inc"
#include "insns_info.inc"
#define ISEQ_MAJOR_VERSION 2
#define ISEQ_MINOR_VERSION 0
VALUE rb_cISeq;
#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;
}
ruby_xfree(compile_data);
}
}
static void
iseq_free(void *ptr)
{
rb_iseq_t *iseq;
RUBY_FREE_ENTER("iseq");
if (ptr) {
iseq = ptr;
if (!iseq->orig) {
/* It's possible that strings are freed */
if (0) {
RUBY_GC_INFO("%s @ %s\n", RSTRING_PTR(iseq->location.label),
RSTRING_PTR(iseq->location.path));
}
if (iseq->iseq != iseq->iseq_encoded) {
RUBY_FREE_UNLESS_NULL(iseq->iseq_encoded);
}
RUBY_FREE_UNLESS_NULL(iseq->iseq);
RUBY_FREE_UNLESS_NULL(iseq->line_info_table);
RUBY_FREE_UNLESS_NULL(iseq->local_table);
RUBY_FREE_UNLESS_NULL(iseq->ic_entries);
RUBY_FREE_UNLESS_NULL(iseq->callinfo_entries);
RUBY_FREE_UNLESS_NULL(iseq->catch_table);
RUBY_FREE_UNLESS_NULL(iseq->arg_opt_table);
RUBY_FREE_UNLESS_NULL(iseq->arg_keyword_table);
compile_data_free(iseq->compile_data);
}
ruby_xfree(ptr);
}
RUBY_FREE_LEAVE("iseq");
}
static void
iseq_mark(void *ptr)
{
RUBY_MARK_ENTER("iseq");
if (ptr) {
rb_iseq_t *iseq = ptr;
RUBY_GC_INFO("%s @ %s\n", RSTRING_PTR(iseq->location.label), RSTRING_PTR(iseq->location.path));
RUBY_MARK_UNLESS_NULL(iseq->mark_ary);
RUBY_MARK_UNLESS_NULL(iseq->location.label);
RUBY_MARK_UNLESS_NULL(iseq->location.base_label);
RUBY_MARK_UNLESS_NULL(iseq->location.path);
RUBY_MARK_UNLESS_NULL(iseq->location.absolute_path);
RUBY_MARK_UNLESS_NULL((VALUE)iseq->cref_stack);
RUBY_MARK_UNLESS_NULL(iseq->klass);
RUBY_MARK_UNLESS_NULL(iseq->coverage);
#if 0
RUBY_MARK_UNLESS_NULL((VALUE)iseq->node);
RUBY_MARK_UNLESS_NULL(iseq->cached_special_block);
#endif
RUBY_MARK_UNLESS_NULL(iseq->orig);
if (iseq->compile_data != 0) {
struct iseq_compile_data *const compile_data = iseq->compile_data;
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
iseq_memsize(const void *ptr)
{
size_t size = sizeof(rb_iseq_t);
const rb_iseq_t *iseq;
if (ptr) {
iseq = ptr;
if (!iseq->orig) {
if (iseq->iseq != iseq->iseq_encoded) {
size += iseq->iseq_size * sizeof(VALUE);
}
size += iseq->iseq_size * sizeof(VALUE);
size += iseq->line_info_size * sizeof(struct iseq_line_info_entry);
size += iseq->local_table_size * sizeof(ID);
size += iseq->catch_table_size * sizeof(struct iseq_catch_table_entry);
size += iseq->arg_opts * sizeof(VALUE);
size += iseq->ic_size * sizeof(struct iseq_inline_cache_entry);
size += iseq->callinfo_size * sizeof(rb_call_info_t);
if (iseq->compile_data) {
struct iseq_compile_data_storage *cur;
cur = iseq->compile_data->storage_head;
while (cur) {
size += cur->size + sizeof(struct iseq_compile_data_storage);
cur = cur->next;
}
size += sizeof(struct iseq_compile_data);
}
}
}
return size;
}
static const rb_data_type_t iseq_data_type = {
"iseq",
{
iseq_mark,
iseq_free,
iseq_memsize,
},
};
static VALUE
iseq_alloc(VALUE klass)
{
rb_iseq_t *iseq;
return TypedData_Make_Struct(klass, rb_iseq_t, &iseq_data_type, iseq);
}
static rb_iseq_location_t *
iseq_location_setup(rb_iseq_t *iseq, VALUE path, VALUE absolute_path, VALUE name, size_t first_lineno)
{
rb_iseq_location_t *loc = &iseq->location;
loc->path = path;
loc->absolute_path = absolute_path;
loc->label = loc->base_label = name;
loc->first_lineno = first_lineno;
return loc;
}
static void
set_relation(rb_iseq_t *iseq, const VALUE parent)
{
const VALUE type = iseq->type;
rb_thread_t *th = GET_THREAD();
rb_iseq_t *piseq;
/* set class nest stack */
if (type == ISEQ_TYPE_TOP) {
/* toplevel is private */
iseq->cref_stack = NEW_CREF(rb_cObject);
iseq->cref_stack->nd_refinements = Qnil;
iseq->cref_stack->nd_visi = NOEX_PRIVATE;
if (th->top_wrapper) {
NODE *cref = NEW_CREF(th->top_wrapper);
cref->nd_refinements = Qnil;
cref->nd_visi = NOEX_PRIVATE;
cref->nd_next = iseq->cref_stack;
iseq->cref_stack = cref;
}
iseq->local_iseq = iseq;
}
else if (type == ISEQ_TYPE_METHOD || type == ISEQ_TYPE_CLASS) {
iseq->cref_stack = NEW_CREF(0); /* place holder */
iseq->cref_stack->nd_refinements = Qnil;
iseq->local_iseq = iseq;
}
else if (RTEST(parent)) {
GetISeqPtr(parent, piseq);
iseq->cref_stack = piseq->cref_stack;
iseq->local_iseq = piseq->local_iseq;
}
if (RTEST(parent)) {
GetISeqPtr(parent, piseq);
iseq->parent_iseq = piseq;
}
if (type == ISEQ_TYPE_MAIN) {
iseq->local_iseq = iseq;
}
}
static VALUE
prepare_iseq_build(rb_iseq_t *iseq,
VALUE name, VALUE path, VALUE absolute_path, VALUE first_lineno,
VALUE parent, enum iseq_type type, VALUE block_opt,
const rb_compile_option_t *option)
{
iseq->type = type;
iseq->arg_rest = -1;
iseq->arg_block = -1;
iseq->arg_keyword = -1;
iseq->klass = 0;
set_relation(iseq, parent);
OBJ_FREEZE(name);
OBJ_FREEZE(path);
iseq_location_setup(iseq, path, absolute_path, name, first_lineno);
if (iseq != iseq->local_iseq) {
iseq->location.base_label = iseq->local_iseq->location.label;
}
iseq->defined_method_id = 0;
iseq->mark_ary = rb_ary_tmp_new(3);
OBJ_UNTRUST(iseq->mark_ary);
RBASIC(iseq->mark_ary)->klass = 0;
/*
* iseq->special_block_builder = GC_GUARDED_PTR_REF(block_opt);
* iseq->cached_special_block_builder = 0;
* iseq->cached_special_block = 0;
*/
iseq->compile_data = ALLOC(struct iseq_compile_data);
MEMZERO(iseq->compile_data, struct iseq_compile_data, 1);
iseq->compile_data->err_info = Qnil;
iseq->compile_data->mark_ary = rb_ary_tmp_new(3);
iseq->compile_data->storage_head = iseq->compile_data->storage_current =
(struct iseq_compile_data_storage *)
ALLOC_N(char, INITIAL_ISEQ_COMPILE_DATA_STORAGE_BUFF_SIZE +
sizeof(struct iseq_compile_data_storage));
iseq->compile_data->catch_table_ary = rb_ary_new();
iseq->compile_data->storage_head->pos = 0;
iseq->compile_data->storage_head->next = 0;
iseq->compile_data->storage_head->size =
INITIAL_ISEQ_COMPILE_DATA_STORAGE_BUFF_SIZE;
iseq->compile_data->storage_head->buff =
(char *)(&iseq->compile_data->storage_head->buff + 1);
iseq->compile_data->option = option;
iseq->compile_data->last_coverable_line = -1;
iseq->coverage = Qfalse;
if (!GET_THREAD()->parse_in_eval) {
VALUE coverages = rb_get_coverages();
if (RTEST(coverages)) {
iseq->coverage = rb_hash_lookup(coverages, path);
if (NIL_P(iseq->coverage)) iseq->coverage = Qfalse;
}
}
return Qtrue;
}
static VALUE
cleanup_iseq_build(rb_iseq_t *iseq)
{
struct iseq_compile_data *data = iseq->compile_data;
VALUE err = data->err_info;
iseq->compile_data = 0;
compile_data_free(data);
if (RTEST(err)) {
rb_funcall2(err, rb_intern("set_backtrace"), 1, &iseq->location.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 */
};
static const rb_compile_option_t COMPILE_OPTION_FALSE = {0};
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) {
memset(option, 1, sizeof(rb_compile_option_t));
}
else if (CLASS_OF(opt) == rb_cHash) {
*option = COMPILE_OPTION_DEFAULT;
#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_NUM(option, opt, debug_level);
#undef SET_COMPILE_OPTION
#undef SET_COMPILE_OPTION_NUM
}
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_NUM(option, opt, debug_level);
}
#undef SET_COMPILE_OPTION
#undef SET_COMPILE_OPTION_NUM
return opt;
}
VALUE
rb_iseq_new(NODE *node, VALUE name, VALUE path, VALUE absolute_path,
VALUE parent, enum iseq_type type)
{
return rb_iseq_new_with_opt(node, name, path, absolute_path, INT2FIX(0), parent, type,
&COMPILE_OPTION_DEFAULT);
}
VALUE
rb_iseq_new_top(NODE *node, VALUE name, VALUE path, VALUE absolute_path, VALUE parent)
{
return rb_iseq_new_with_opt(node, name, path, absolute_path, INT2FIX(0), parent, ISEQ_TYPE_TOP,
&COMPILE_OPTION_DEFAULT);
}
VALUE
rb_iseq_new_main(NODE *node, VALUE path, VALUE absolute_path)
{
rb_thread_t *th = GET_THREAD();
VALUE parent = th->base_block->iseq->self;
return rb_iseq_new_with_opt(node, rb_str_new2("<main>"), path, absolute_path, INT2FIX(0),
parent, ISEQ_TYPE_MAIN, &COMPILE_OPTION_DEFAULT);
}
static VALUE
rb_iseq_new_with_bopt_and_opt(NODE *node, VALUE name, VALUE path, VALUE absolute_path, VALUE first_lineno,
VALUE parent, enum iseq_type type, VALUE bopt,
const rb_compile_option_t *option)
{
rb_iseq_t *iseq;
VALUE self = iseq_alloc(rb_cISeq);
GetISeqPtr(self, iseq);
iseq->self = self;
prepare_iseq_build(iseq, name, path, absolute_path, first_lineno, parent, type, bopt, option);
rb_iseq_compile_node(self, node);
cleanup_iseq_build(iseq);
return self;
}
VALUE
rb_iseq_new_with_opt(NODE *node, VALUE name, VALUE path, VALUE absolute_path, VALUE first_lineno,
VALUE parent, enum iseq_type type,
const rb_compile_option_t *option)
{
/* TODO: argument check */
return rb_iseq_new_with_bopt_and_opt(node, name, path, absolute_path, first_lineno, parent, type,
Qfalse, option);
}
VALUE
rb_iseq_new_with_bopt(NODE *node, VALUE name, VALUE path, VALUE absolute_path, VALUE first_lineno,
VALUE parent, enum iseq_type type, VALUE bopt)
{
/* TODO: argument check */
return rb_iseq_new_with_bopt_and_opt(node, name, path, absolute_path, first_lineno, parent, type,
bopt, &COMPILE_OPTION_DEFAULT);
}
#define CHECK_ARRAY(v) rb_convert_type((v), T_ARRAY, "Array", "to_ary")
#define CHECK_STRING(v) rb_convert_type((v), T_STRING, "String", "to_str")
#define CHECK_SYMBOL(v) rb_convert_type((v), T_SYMBOL, "Symbol", "to_sym")
static inline VALUE CHECK_INTEGER(VALUE v) {(void)NUM2LONG(v); return v;}
static VALUE
iseq_load(VALUE self, VALUE data, VALUE parent, VALUE opt)
{
VALUE iseqval = iseq_alloc(self);
VALUE magic, version1, version2, format_type, misc;
VALUE name, path, absolute_path, first_lineno;
VALUE type, body, locals, args, exception;
st_data_t iseq_type;
struct st_table *type_map = 0;
rb_iseq_t *iseq;
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 = rb_ary_entry(data, i++); /* TODO */
((void)magic, (void)version1, (void)version2, (void)format_type, (void)misc);
name = CHECK_STRING(rb_ary_entry(data, i++));
path = CHECK_STRING(rb_ary_entry(data, i++));
absolute_path = rb_ary_entry(data, i++);
absolute_path = NIL_P(absolute_path) ? Qnil : CHECK_STRING(absolute_path);
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++));
args = rb_ary_entry(data, i++);
if (FIXNUM_P(args) || (args = CHECK_ARRAY(args))) {
/* */
}
exception = CHECK_ARRAY(rb_ary_entry(data, i++));
body = CHECK_ARRAY(rb_ary_entry(data, i++));
GetISeqPtr(iseqval, iseq);
iseq->self = iseqval;
if (type_map == 0) {
type_map = st_init_numtable();
st_insert(type_map, ID2SYM(rb_intern("top")), ISEQ_TYPE_TOP);
st_insert(type_map, ID2SYM(rb_intern("method")), ISEQ_TYPE_METHOD);
st_insert(type_map, ID2SYM(rb_intern("block")), ISEQ_TYPE_BLOCK);
st_insert(type_map, ID2SYM(rb_intern("class")), ISEQ_TYPE_CLASS);
st_insert(type_map, ID2SYM(rb_intern("rescue")), ISEQ_TYPE_RESCUE);
st_insert(type_map, ID2SYM(rb_intern("ensure")), ISEQ_TYPE_ENSURE);
st_insert(type_map, ID2SYM(rb_intern("eval")), ISEQ_TYPE_EVAL);
st_insert(type_map, ID2SYM(rb_intern("main")), ISEQ_TYPE_MAIN);
st_insert(type_map, ID2SYM(rb_intern("defined_guard")), ISEQ_TYPE_DEFINED_GUARD);
}
if (st_lookup(type_map, type, &iseq_type) == 0) {
ID typeid = SYM2ID(type);
VALUE typename = rb_id2str(typeid);
if (typename)
rb_raise(rb_eTypeError, "unsupport type: :%"PRIsVALUE, typename);
else
rb_raise(rb_eTypeError, "unsupport type: %p", (void *)typeid);
}
if (parent == Qnil) {
parent = 0;
}
make_compile_option(&option, opt);
prepare_iseq_build(iseq, name, path, absolute_path, first_lineno,
parent, (enum iseq_type)iseq_type, 0, &option);
rb_iseq_build_from_ary(iseq, locals, args, exception, body);
cleanup_iseq_build(iseq);
return iseqval;
}
/*
* :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(self, data, 0, opt);
}
VALUE
rb_iseq_load(VALUE data, VALUE parent, VALUE opt)
{
return iseq_load(rb_cISeq, data, parent, opt);
}
static NODE *
parse_string(VALUE str, const char *file, int line)
{
VALUE parser = rb_parser_new();
NODE *node = rb_parser_compile_string(parser, file, str, line);
if (!node) {
rb_exc_raise(GET_THREAD()->errinfo); /* TODO: check err */
}
return node;
}
VALUE
rb_iseq_compile_with_option(VALUE src, VALUE file, VALUE absolute_path, VALUE line, rb_block_t *base_block, VALUE opt)
{
int state;
rb_thread_t *th = GET_THREAD();
rb_block_t *prev_base_block = th->base_block;
VALUE iseqval = Qundef;
th->base_block = base_block;
TH_PUSH_TAG(th);
if ((state = EXEC_TAG()) == 0) {
int ln = NUM2INT(line);
const char *fn = StringValueCStr(file);
NODE *node;
rb_compile_option_t option;
make_compile_option(&option, opt);
if (RB_TYPE_P((src), T_FILE))
node = rb_compile_file(fn, src, ln);
else
node = parse_string(StringValue(src), fn, ln);
if (base_block && base_block->iseq) {
iseqval = rb_iseq_new_with_opt(node, base_block->iseq->location.label,
file, absolute_path, line, base_block->iseq->self,
ISEQ_TYPE_EVAL, &option);
}
else {
iseqval = rb_iseq_new_with_opt(node, rb_str_new2("<compiled>"), file, absolute_path, line, Qfalse,
ISEQ_TYPE_TOP, &option);
}
}
TH_POP_TAG();
th->base_block = prev_base_block;
if (state) {
JUMP_TAG(state);
}
return iseqval;
}
VALUE
rb_iseq_compile(VALUE src, VALUE file, VALUE line)
{
return rb_iseq_compile_with_option(src, file, Qnil, line, 0, Qnil);
}
VALUE
rb_iseq_compile_on_base(VALUE src, VALUE file, VALUE line, rb_block_t *base_block)
{
return rb_iseq_compile_with_option(src, file, Qnil, line, base_block, Qnil);
}
/*
* 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 InstructionSequence.compile_option=.
*
* RubyVM::InstructionSequence.compile("a = 1 + 2")
* #=> <RubyVM::InstructionSequence:<compiled>@<compiled>>
*
*/
static VALUE
iseq_s_compile(int argc, VALUE *argv, VALUE self)
{
VALUE src, file = Qnil, path = Qnil, line = INT2FIX(1), opt = Qnil;
rb_secure(1);
rb_scan_args(argc, argv, "14", &src, &file, &path, &line, &opt);
if (NIL_P(file)) file = rb_str_new2("<compiled>");
if (NIL_P(line)) line = INT2FIX(1);
return 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 see
* InstructionSequence.compile_option=).
*
* # /tmp/hello.rb
* puts "Hello, world!"
*
* # elsewhere
* RubyVM::InstructionSequence.compile_file("/tmp/hello.rb")
* #=> <RubyVM::InstructionSequence:<main>@/tmp/hello.rb>
*/
static VALUE
iseq_s_compile_file(int argc, VALUE *argv, VALUE self)
{
VALUE file, line = INT2FIX(1), opt = Qnil;
VALUE parser;
VALUE f;
NODE *node;
const char *fname;
rb_compile_option_t option;
rb_secure(1);
rb_scan_args(argc, argv, "11", &file, &opt);
FilePathValue(file);
fname = StringValueCStr(file);
f = rb_file_open_str(file, "r");
parser = rb_parser_new();
node = rb_parser_compile_file(parser, fname, f, NUM2INT(line));
make_compile_option(&option, opt);
return rb_iseq_new_with_opt(node, rb_str_new2("<main>"), file,
rb_realpath_internal(Qnil, file, 1), line, Qfalse,
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, a +Hash+ of options that you
* want to change (options not present in the hash will be left unchanged),
* and +nil+ which leaves all options 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
* InstructionSequence.new, InstructionSequence.compile and
* InstructionSequence.compile_file.
*/
static VALUE
iseq_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
iseq_s_compile_option_get(VALUE self)
{
return make_compile_option_value(&COMPILE_OPTION_DEFAULT);
}
static rb_iseq_t *
iseq_check(VALUE val)
{
rb_iseq_t *iseq;
GetISeqPtr(val, iseq);
if (!iseq->location.label) {
rb_raise(rb_eTypeError, "uninitialized InstructionSequence");
}
return iseq;
}
/*
* call-seq:
* iseq.eval -> obj
*
* Evaluates the instruction sequence and returns the result.
*
* RubyVM::InstructionSequence.compile("1 + 2").eval #=> 3
*/
static VALUE
iseq_eval(VALUE self)
{
rb_secure(1);
return rb_iseq_eval(self);
}
/*
* :nodoc:
*/
static VALUE
iseq_inspect(VALUE self)
{
rb_iseq_t *iseq;
GetISeqPtr(self, iseq);
if (!iseq->location.label) {
return rb_sprintf("#<%s: uninitialized>", rb_obj_classname(self));
}
return rb_sprintf("<%s:%s@%s>",
rb_obj_classname(self),
RSTRING_PTR(iseq->location.label), RSTRING_PTR(iseq->location.path));
}
static VALUE
iseq_path(VALUE self)
{
rb_iseq_t *iseq;
GetISeqPtr(self, iseq);
return iseq->location.path;
}
static VALUE
iseq_absolute_path(VALUE self)
{
rb_iseq_t *iseq;
GetISeqPtr(self, iseq);
return iseq->location.absolute_path;
}
static VALUE
iseq_label(VALUE self)
{
rb_iseq_t *iseq;
GetISeqPtr(self, iseq);
return iseq->location.label;
}
static VALUE
iseq_base_label(VALUE self)
{
rb_iseq_t *iseq;
GetISeqPtr(self, iseq);
return iseq->location.base_label;
}
static VALUE
iseq_first_lineno(VALUE self)
{
rb_iseq_t *iseq;
GetISeqPtr(self, iseq);
return iseq->location.first_lineno;
}
static
VALUE iseq_data_to_ary(rb_iseq_t *iseq);
/*
* call-seq:
* iseq.to_a -> ary
*
* Returns an Array of size 14 representing the instruction sequence with
* the following data:
*
* [magic]
* A string identifying the data format. Always
* "YARVInstructionSequence/SimpleDataFormat".
*
* [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. Always 1.
*
* [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, and
* +:stack_max+, used in calculating the stack depth at which a
* +SystemStackError+ is thrown.
*
* [name]
* 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.
*
* [start_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.
*
* [args]
* The arity if the method or block only has required arguments. Otherwise
* an array of:
*
* [required_argc, [optional_arg_labels, ...],
* splat_index, post_splat_argc, post_splat_index,
* block_index, simple]
*
* 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.
*
*/
static VALUE
iseq_to_a(VALUE self)
{
rb_iseq_t *iseq = iseq_check(self);
rb_secure(1);
return iseq_data_to_ary(iseq);
}
int
rb_iseq_first_lineno(const rb_iseq_t *iseq)
{
return FIX2INT(iseq->location.first_lineno);
}
/* TODO: search algorithm is brute force.
this should be binary search or so. */
static struct iseq_line_info_entry *
get_line_info(const rb_iseq_t *iseq, size_t pos)
{
size_t i = 0, size = iseq->line_info_size;
struct iseq_line_info_entry *table = iseq->line_info_table;
const int debug = 0;
if (debug) {
printf("size: %"PRIdSIZE"\n", size);
printf("table[%"PRIdSIZE"]: position: %d, line: %d, pos: %"PRIdSIZE"\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[%"PRIdSIZE"]: position: %d, line: %d, pos: %"PRIdSIZE"\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)
{
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);