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compile.c
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/**********************************************************************
compile.c - ruby node tree -> VM instruction sequence
$Author$
created at: 04/01/01 03:42:15 JST
Copyright (C) 2004-2007 Koichi Sasada
**********************************************************************/
#include "ruby/ruby.h"
#include "ruby/node.h"
#define USE_INSN_STACK_INCREASE 1
#include "vm_core.h"
#include "compile.h"
#include "insns.inc"
#include "insns_info.inc"
#ifdef HAVE_STDARG_PROTOTYPES
#include <stdarg.h>
#define va_init_list(a,b) va_start(a,b)
#else
#include <varargs.h>
#define va_init_list(a,b) va_start(a)
#endif
VALUE iseq_load(VALUE self, VALUE data, VALUE parent, VALUE opt);
/* types */
typedef struct iseq_link_element {
enum {
ISEQ_ELEMENT_NONE = INT2FIX(0x00),
ISEQ_ELEMENT_LABEL = INT2FIX(0x01),
ISEQ_ELEMENT_INSN = INT2FIX(0x02),
ISEQ_ELEMENT_ADJUST = INT2FIX(0x03),
} type;
struct iseq_link_element *next;
struct iseq_link_element *prev;
} LINK_ELEMENT;
typedef struct iseq_link_anchor {
LINK_ELEMENT anchor;
LINK_ELEMENT *last;
} LINK_ANCHOR;
typedef struct iseq_label_data {
LINK_ELEMENT link;
int label_no;
int position;
int sc_state;
int set;
int sp;
} LABEL;
typedef struct iseq_insn_data {
LINK_ELEMENT link;
enum ruby_vminsn_type insn_id;
int line_no;
int operand_size;
int sc_state;
VALUE *operands;
} INSN;
typedef struct iseq_adjust_data {
LINK_ELEMENT link;
LABEL *label;
int line_no;
} ADJUST;
struct ensure_range {
LABEL *begin;
LABEL *end;
struct ensure_range *next;
};
struct iseq_compile_data_ensure_node_stack {
NODE *ensure_node;
struct iseq_compile_data_ensure_node_stack *prev;
struct ensure_range *erange;
};
#include "optinsn.inc"
#if OPT_INSTRUCTIONS_UNIFICATION
#include "optunifs.inc"
#endif
/* for debug */
#if CPDEBUG < 0
#define ISEQ_ARG iseq,
#define ISEQ_ARG_DECLARE rb_iseq_t *iseq,
#else
#define ISEQ_ARG
#define ISEQ_ARG_DECLARE
#endif
#if CPDEBUG
#define gl_node_level iseq->compile_data->node_level
#if 0
static void debug_list(ISEQ_ARG_DECLARE LINK_ANCHOR *anchor);
#endif
#endif
static void dump_disasm_list(LINK_ELEMENT *elem);
static int insn_data_length(INSN *iobj);
static int insn_data_line_no(INSN *iobj);
static int calc_sp_depth(int depth, INSN *iobj);
static void ADD_ELEM(ISEQ_ARG_DECLARE LINK_ANCHOR *anchor, LINK_ELEMENT *elem);
static INSN *new_insn_body(rb_iseq_t *iseq, int line_no, int insn_id, int argc, ...);
static LABEL *new_label_body(rb_iseq_t *iseq, int line);
static ADJUST *new_adjust_body(rb_iseq_t *iseq, LABEL *label, int line);
static int iseq_compile_each(rb_iseq_t *iseq, LINK_ANCHOR *anchor, NODE * n, int);
static int iseq_setup(rb_iseq_t *iseq, LINK_ANCHOR *anchor);
static int iseq_optimize(rb_iseq_t *iseq, LINK_ANCHOR *anchor);
static int iseq_insns_unification(rb_iseq_t *iseq, LINK_ANCHOR *anchor);
static int iseq_set_local_table(rb_iseq_t *iseq, ID *tbl);
static int iseq_set_exception_local_table(rb_iseq_t *iseq);
static int iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *anchor, NODE * node);
static int iseq_set_sequence_stackcaching(rb_iseq_t *iseq, LINK_ANCHOR *anchor);
static int iseq_set_sequence(rb_iseq_t *iseq, LINK_ANCHOR *anchor);
static int iseq_set_exception_table(rb_iseq_t *iseq);
static int iseq_set_optargs_table(rb_iseq_t *iseq);
/*
* To make Array to LinkedList, use link_anchor
*/
static void
verify_list(ISEQ_ARG_DECLARE const char *info, LINK_ANCHOR *anchor)
{
#if CPDEBUG
int flag = 0;
LINK_ELEMENT *list, *plist;
if (!compile_debug) return;
list = anchor->anchor.next;
plist = &anchor->anchor;
while (list) {
if (plist != list->prev) {
flag += 1;
}
plist = list;
list = list->next;
}
if (anchor->last != plist && anchor->last != 0) {
flag |= 0x70000;
}
if (flag != 0) {
rb_bug("list verify error: %08x (%s)", flag, info);
}
#endif
}
#if CPDEBUG < 0
#define verify_list(info, anchor) verify_list(iseq, info, anchor)
#endif
/*
* elem1, elem2 => elem1, elem2, elem
*/
static void
ADD_ELEM(ISEQ_ARG_DECLARE LINK_ANCHOR *anchor, LINK_ELEMENT *elem)
{
elem->prev = anchor->last;
anchor->last->next = elem;
anchor->last = elem;
verify_list("add", anchor);
}
#if CPDEBUG < 0
#define ADD_ELEM(anchor, elem) ADD_ELEM(iseq, anchor, elem)
#endif
static int
iseq_add_mark_object(rb_iseq_t *iseq, VALUE v)
{
if (!SPECIAL_CONST_P(v)) {
rb_ary_push(iseq->mark_ary, v);
}
return COMPILE_OK;
}
#define ruby_sourcefile RSTRING_PTR(iseq->filename)
static int
iseq_add_mark_object_compile_time(rb_iseq_t *iseq, VALUE v)
{
if (!SPECIAL_CONST_P(v)) {
rb_ary_push(iseq->compile_data->mark_ary, v);
}
return COMPILE_OK;
}
VALUE
iseq_compile(VALUE self, NODE *node)
{
DECL_ANCHOR(ret);
rb_iseq_t *iseq;
INIT_ANCHOR(ret);
GetISeqPtr(self, iseq);
if (node == 0) {
COMPILE(ret, "nil", node);
iseq_set_local_table(iseq, 0);
}
else if (nd_type(node) == NODE_SCOPE) {
/* iseq type of top, method, class, block */
iseq_set_local_table(iseq, node->nd_tbl);
iseq_set_arguments(iseq, ret, node->nd_args);
switch (iseq->type) {
case ISEQ_TYPE_BLOCK: {
LABEL *start = iseq->compile_data->start_label = NEW_LABEL(0);
LABEL *end = iseq->compile_data->end_label = NEW_LABEL(0);
ADD_LABEL(ret, start);
COMPILE(ret, "block body", node->nd_body);
ADD_LABEL(ret, end);
/* wide range catch handler must put at last */
ADD_CATCH_ENTRY(CATCH_TYPE_REDO, start, end, 0, start);
ADD_CATCH_ENTRY(CATCH_TYPE_NEXT, start, end, 0, end);
break;
}
case ISEQ_TYPE_CLASS: {
ADD_TRACE(ret, nd_line(node), RUBY_EVENT_CLASS);
COMPILE(ret, "scoped node", node->nd_body);
ADD_TRACE(ret, nd_line(node), RUBY_EVENT_END);
break;
}
case ISEQ_TYPE_METHOD: {
ADD_TRACE(ret, nd_line(node), RUBY_EVENT_CALL);
COMPILE(ret, "scoped node", node->nd_body);
ADD_TRACE(ret, nd_line(node), RUBY_EVENT_RETURN);
break;
}
default: {
COMPILE(ret, "scoped node", node->nd_body);
break;
}
}
}
else {
switch (iseq->type) {
case ISEQ_TYPE_METHOD:
case ISEQ_TYPE_CLASS:
case ISEQ_TYPE_BLOCK:
case ISEQ_TYPE_EVAL:
case ISEQ_TYPE_TOP:
rb_compile_error(ERROR_ARGS "compile/should not be reached: %s:%d",
__FILE__, __LINE__);
break;
case ISEQ_TYPE_RESCUE:
iseq_set_exception_local_table(iseq);
COMPILE(ret, "rescue", node);
break;
case ISEQ_TYPE_ENSURE:
iseq_set_exception_local_table(iseq);
COMPILE_POPED(ret, "ensure", node);
break;
case ISEQ_TYPE_DEFINED_GUARD:
iseq_set_local_table(iseq, 0);
COMPILE(ret, "defined guard", node);
break;
default:
rb_bug("unknown scope");
}
}
if (iseq->type == ISEQ_TYPE_RESCUE || iseq->type == ISEQ_TYPE_ENSURE) {
ADD_INSN2(ret, 0, getdynamic, INT2FIX(2), INT2FIX(0));
ADD_INSN1(ret, 0, throw, INT2FIX(0) /* continue throw */ );
}
else {
ADD_INSN(ret, iseq->compile_data->last_line, leave);
}
return iseq_setup(iseq, ret);
}
int
iseq_translate_threaded_code(rb_iseq_t *iseq)
{
#if OPT_DIRECT_THREADED_CODE || OPT_CALL_THREADED_CODE
extern const void **vm_get_insns_address_table(void);
#if OPT_DIRECT_THREADED_CODE
const void * const *table = vm_get_insns_address_table();
#else
const void * const *table = vm_get_insns_address_table();
#endif
int i;
iseq->iseq_encoded = ALLOC_N(VALUE, iseq->iseq_size);
MEMCPY(iseq->iseq_encoded, iseq->iseq, VALUE, iseq->iseq_size);
for (i = 0; i < iseq->iseq_size; /* */ ) {
int insn = iseq->iseq_encoded[i];
int len = insn_len(insn);
iseq->iseq_encoded[i] = (VALUE)table[insn];
i += len;
}
#else
iseq->iseq_encoded = iseq->iseq;
#endif
return COMPILE_OK;
}
/*********************************************/
/* definition of data structure for compiler */
/*********************************************/
static void *
compile_data_alloc(rb_iseq_t *iseq, size_t size)
{
void *ptr = 0;
struct iseq_compile_data_storage *storage =
iseq->compile_data->storage_current;
if (storage->pos + size > storage->size) {
unsigned long alloc_size = storage->size * 2;
retry:
if (alloc_size < size) {
alloc_size *= 2;
goto retry;
}
storage->next = (void *)ALLOC_N(char, alloc_size +
sizeof(struct
iseq_compile_data_storage));
storage = iseq->compile_data->storage_current = storage->next;
storage->next = 0;
storage->pos = 0;
storage->size = alloc_size;
storage->buff = (char *)(&storage->buff + 1);
}
ptr = (void *)&storage->buff[storage->pos];
storage->pos += size;
return ptr;
}
static INSN *
compile_data_alloc_insn(rb_iseq_t *iseq)
{
return (INSN *)compile_data_alloc(iseq, sizeof(INSN));
}
static LABEL *
compile_data_alloc_label(rb_iseq_t *iseq)
{
return (LABEL *)compile_data_alloc(iseq, sizeof(LABEL));
}
static ADJUST *
compile_data_alloc_adjust(rb_iseq_t *iseq)
{
return (ADJUST *)compile_data_alloc(iseq, sizeof(ADJUST));
}
/*
* elem1, elemX => elem1, elem2, elemX
*/
static void
INSERT_ELEM_NEXT(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
{
elem2->next = elem1->next;
elem2->prev = elem1;
elem1->next = elem2;
if (elem2->next) {
elem2->next->prev = elem2;
}
}
#if 0 /* unused */
/*
* elemX, elem1 => elemX, elem2, elem1
*/
static void
INSERT_ELEM_PREV(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
{
elem2->prev = elem1->prev;
elem2->next = elem1;
elem1->prev = elem2;
if (elem2->prev) {
elem2->prev->next = elem2;
}
}
#endif
/*
* elemX, elem1, elemY => elemX, elem2, elemY
*/
static void
REPLACE_ELEM(LINK_ELEMENT *elem1, LINK_ELEMENT *elem2)
{
elem2->prev = elem1->prev;
elem2->next = elem1->next;
if (elem1->prev) {
elem1->prev->next = elem2;
}
if (elem1->next) {
elem1->next->prev = elem2;
}
}
static void
REMOVE_ELEM(LINK_ELEMENT *elem)
{
elem->prev->next = elem->next;
if (elem->next) {
elem->next->prev = elem->prev;
}
}
static LINK_ELEMENT *
FIRST_ELEMENT(LINK_ANCHOR *anchor)
{
return anchor->anchor.next;
}
#if 0 /* unused */
static LINK_ELEMENT *
LAST_ELEMENT(LINK_ANCHOR *anchor)
{
return anchor->last;
}
#endif
static LINK_ELEMENT *
POP_ELEMENT(ISEQ_ARG_DECLARE LINK_ANCHOR *anchor)
{
LINK_ELEMENT *elem = anchor->last;
anchor->last = anchor->last->prev;
anchor->last->next = 0;
verify_list("pop", anchor);
return elem;
}
#if CPDEBUG < 0
#define POP_ELEMENT(anchor) POP_ELEMENT(iseq, anchor)
#endif
#if 0 /* unused */
static LINK_ELEMENT *
SHIFT_ELEMENT(LINK_ANCHOR *anchor)
{
LINK_ELEMENT *elem = anchor->anchor.next;
if (elem) {
anchor->anchor.next = elem->next;
}
return elem;
}
#endif
#if 0 /* unused */
static int
LIST_SIZE(LINK_ANCHOR *anchor)
{
LINK_ELEMENT *elem = anchor->anchor.next;
int size = 0;
while (elem) {
size += 1;
elem = elem->next;
}
return size;
}
#endif
static int
LIST_SIZE_ZERO(LINK_ANCHOR *anchor)
{
if (anchor->anchor.next == 0) {
return 1;
}
else {
return 0;
}
}
/*
* anc1: e1, e2, e3
* anc2: e4, e5
*#=>
* anc1: e1, e2, e3, e4, e5
* anc2: e4, e5 (broken)
*/
static void
APPEND_LIST(ISEQ_ARG_DECLARE LINK_ANCHOR *anc1, LINK_ANCHOR *anc2)
{
if (anc2->anchor.next) {
anc1->last->next = anc2->anchor.next;
anc2->anchor.next->prev = anc1->last;
anc1->last = anc2->last;
}
verify_list("append", anc1);
}
#if CPDEBUG < 0
#define APPEND_LIST(anc1, anc2) APPEND_LIST(iseq, anc1, anc2)
#endif
/*
* anc1: e1, e2, e3
* anc2: e4, e5
*#=>
* anc1: e4, e5, e1, e2, e3
* anc2: e4, e5 (broken)
*/
static void
INSERT_LIST(ISEQ_ARG_DECLARE LINK_ANCHOR *anc1, LINK_ANCHOR *anc2)
{
if (anc2->anchor.next) {
LINK_ELEMENT *first = anc1->anchor.next;
anc1->anchor.next = anc2->anchor.next;
anc1->anchor.next->prev = &anc1->anchor;
anc2->last->next = first;
if (first) {
first->prev = anc2->last;
}
else {
anc1->last = anc2->last;
}
}
verify_list("append", anc1);
}
#if CPDEBUG < 0
#define INSERT_LIST(anc1, anc2) INSERT_LIST(iseq, anc1, anc2)
#endif
#if 0 /* unused */
/*
* anc1: e1, e2, e3
* anc2: e4, e5
*#=>
* anc1: e4, e5
* anc2: e1, e2, e3
*/
static void
SWAP_LIST(ISEQ_ARG_DECLARE LINK_ANCHOR *anc1, LINK_ANCHOR *anc2)
{
LINK_ANCHOR tmp = *anc2;
/* it has bug */
*anc2 = *anc1;
*anc1 = tmp;
verify_list("swap1", anc1);
verify_list("swap2", anc2);
}
#if CPDEBUG < 0
#define SWAP_LIST(anc1, anc2) SWAP_LIST(iseq, anc1, anc2)
#endif
static LINK_ANCHOR *
REVERSE_LIST(ISEQ_ARG_DECLARE LINK_ANCHOR *anc)
{
LINK_ELEMENT *first, *last, *elem, *e;
first = &anc->anchor;
elem = first->next;
last = anc->last;
if (elem != 0) {
anc->anchor.next = last;
anc->last = elem;
}
else {
/* null list */
return anc;
}
while (elem) {
e = elem->next;
elem->next = elem->prev;
elem->prev = e;
elem = e;
}
first->next = last;
last->prev = first;
anc->last->next = 0;
verify_list("reverse", anc);
return anc;
}
#if CPDEBUG < 0
#define REVERSE_LIST(anc) REVERSE_LIST(iseq, anc)
#endif
#endif
#if CPDEBUG && 0
static void
debug_list(ISEQ_ARG_DECLARE LINK_ANCHOR *anchor)
{
LINK_ELEMENT *list = FIRST_ELEMENT(anchor);
printf("----\n");
printf("anch: %p, frst: %p, last: %p\n", &anchor->anchor,
anchor->anchor.next, anchor->last);
while (list) {
printf("curr: %p, next: %p, prev: %p, type: %d\n", list, list->next,
list->prev, FIX2INT(list->type));
list = list->next;
}
printf("----\n");
dump_disasm_list(anchor->anchor.next);
verify_list("debug list", anchor);
}
#if CPDEBUG < 0
#define debug_list(anc) debug_list(iseq, anc)
#endif
#endif
static LABEL *
new_label_body(rb_iseq_t *iseq, int line)
{
LABEL *labelobj = compile_data_alloc_label(iseq);
labelobj->link.type = ISEQ_ELEMENT_LABEL;
labelobj->link.next = 0;
labelobj->label_no = iseq->compile_data->label_no++;
labelobj->sc_state = 0;
labelobj->sp = -1;
return labelobj;
}
static ADJUST *
new_adjust_body(rb_iseq_t *iseq, LABEL *label, int line)
{
ADJUST *adjust = compile_data_alloc_adjust(iseq);
adjust->link.type = ISEQ_ELEMENT_ADJUST;
adjust->link.next = 0;
adjust->label = label;
adjust->line_no = line;
return adjust;
}
static INSN *
new_insn_core(rb_iseq_t *iseq, int line_no,
int insn_id, int argc, VALUE *argv)
{
INSN *iobj = compile_data_alloc_insn(iseq);
iobj->link.type = ISEQ_ELEMENT_INSN;
iobj->link.next = 0;
iobj->insn_id = insn_id;
iobj->line_no = line_no;
iobj->operands = argv;
iobj->operand_size = argc;
iobj->sc_state = 0;
return iobj;
}
static INSN *
new_insn_body(rb_iseq_t *iseq, int line_no, int insn_id, int argc, ...)
{
VALUE *operands = 0;
va_list argv;
if (argc > 0) {
int i;
va_init_list(argv, argc);
operands = (VALUE *)compile_data_alloc(iseq, sizeof(VALUE) * argc);
for (i = 0; i < argc; i++) {
VALUE v = va_arg(argv, VALUE);
operands[i] = v;
}
va_end(argv);
}
return new_insn_core(iseq, line_no, insn_id, argc, operands);
}
static INSN *
new_insn_send(rb_iseq_t *iseq, int line_no,
VALUE id, VALUE argc, VALUE block, VALUE flag)
{
INSN *iobj = 0;
VALUE *operands =
(VALUE *)compile_data_alloc(iseq, sizeof(VALUE) * 5);
operands[0] = id;
operands[1] = argc;
operands[2] = block;
operands[3] = flag;
operands[4] = 0;
iobj = new_insn_core(iseq, line_no, BIN(send), 5, operands);
return iobj;
}
static VALUE
new_child_iseq(rb_iseq_t *iseq, NODE *node,
VALUE name, VALUE parent, VALUE type)
{
VALUE ret;
debugs("[new_child_iseq]> ---------------------------------------\n");
ret = rb_iseq_new_with_opt(node, name, iseq_filename(iseq->self),
parent, type, iseq->compile_data->option);
debugs("[new_child_iseq]< ---------------------------------------\n");
iseq_add_mark_object(iseq, ret);
return ret;
}
static int
iseq_setup(rb_iseq_t *iseq, LINK_ANCHOR *anchor)
{
/* debugs("[compile step 2] (iseq_array_to_linkedlist)\n"); */
if (compile_debug > 5)
dump_disasm_list(FIRST_ELEMENT(anchor));
debugs("[compile step 3.1 (iseq_optimize)]\n");
iseq_optimize(iseq, anchor);
if (compile_debug > 5)
dump_disasm_list(FIRST_ELEMENT(anchor));
if (iseq->compile_data->option->instructions_unification) {
debugs("[compile step 3.2 (iseq_insns_unification)]\n");
iseq_insns_unification(iseq, anchor);
if (compile_debug > 5)
dump_disasm_list(FIRST_ELEMENT(anchor));
}
if (iseq->compile_data->option->stack_caching) {
debugs("[compile step 3.3 (iseq_set_sequence_stackcaching)]\n");
iseq_set_sequence_stackcaching(iseq, anchor);
if (compile_debug > 5)
dump_disasm_list(FIRST_ELEMENT(anchor));
}
debugs("[compile step 4.1 (iseq_set_sequence)]\n");
iseq_set_sequence(iseq, anchor);
if (compile_debug > 5)
dump_disasm_list(FIRST_ELEMENT(anchor));
debugs("[compile step 4.2 (iseq_set_exception_table)]\n");
iseq_set_exception_table(iseq);
debugs("[compile step 4.3 (set_optargs_table)] \n");
iseq_set_optargs_table(iseq);
debugs("[compile step 5 (iseq_translate_threaded_code)] \n");
iseq_translate_threaded_code(iseq);
if (compile_debug > 1) {
VALUE str = ruby_iseq_disasm(iseq->self);
printf("%s\n", StringValueCStr(str));
fflush(stdout);
}
debugs("[compile step: finish]\n");
return 0;
}
static int
iseq_set_exception_local_table(rb_iseq_t *iseq)
{
static ID id_dollar_bang;
if (!id_dollar_bang) {
id_dollar_bang = rb_intern("#$!");
}
iseq->local_table = (ID *)ALLOC_N(ID *, 1);
iseq->local_table_size = 1;
iseq->local_size = iseq->local_table_size + 1;
iseq->local_table[0] = id_dollar_bang;
return COMPILE_OK;
}
static int
get_dyna_var_idx_at_raw(rb_iseq_t *iseq, ID id)
{
int i;
for (i = 0; i < iseq->local_table_size; i++) {
if (iseq->local_table[i] == id) {
return i;
}
}
return -1;
}
static int
get_local_var_idx(rb_iseq_t *iseq, ID id)
{
int idx = get_dyna_var_idx_at_raw(iseq->local_iseq, id);
if (idx < 0) {
rb_bug("get_local_var_idx: %d", idx);
}
return idx;
}
static int
get_dyna_var_idx(rb_iseq_t *iseq, ID id, int *level, int *ls)
{
int lv = 0, idx = -1;
while (iseq) {
idx = get_dyna_var_idx_at_raw(iseq, id);
if (idx >= 0) {
break;
}
iseq = iseq->parent_iseq;
lv++;
}
if (idx < 0) {
rb_bug("get_dyna_var_idx: -1");
}
*level = lv;
*ls = iseq->local_size;
return idx;
}
static int
iseq_set_arguments(rb_iseq_t *iseq, LINK_ANCHOR *optargs, NODE *node_args)
{
debugs("iseq_set_arguments: %s\n", node_args ? "" : "0");
if (node_args) {
NODE *node_aux = node_args->nd_next;
NODE *node_opt = node_args->nd_opt;
ID rest_id = 0;
int last_comma = 0;
ID block_id = 0;
NODE *node_init = 0;
if (nd_type(node_args) != NODE_ARGS) {
rb_bug("iseq_set_arguments: NODE_ARGS is expected, but %s",
ruby_node_name(nd_type(node_args)));
}
/*
* new argument infromation:
* NODE_ARGS [m: int, o: NODE_OPT_ARG, ->]
* NODE_ARGS_AUX [r: ID, b: ID, ->]
* NODE_ARGS_AUX [Pst: id, Plen: int, init: NODE*]
* optarg information:
* NODE_OPT_ARGS [idx, expr, next ->]
* init arg:
* NODE_AND(m_init, p_init)
* if "r" is 1, it's means "{|x,|}" type block parameter.
*/
iseq->argc = node_args->nd_frml;
debugs(" - argc: %d\n", iseq->argc);
if (node_aux) {
rest_id = node_aux->nd_rest;
if (rest_id == 1) {
last_comma = 1;
rest_id = 0;
}
block_id = (ID)node_aux->nd_body;
node_aux = node_aux->nd_next;
if (node_aux) {
ID post_start_id = node_aux->nd_pid;
iseq->arg_post_start = get_dyna_var_idx_at_raw(iseq, post_start_id);
iseq->arg_post_len = node_aux->nd_plen;
node_init = node_aux->nd_next;
}
}
if (node_opt) {
NODE *node = node_opt;
LABEL *label;
VALUE labels = rb_ary_new();
int i = 0, j;
while (node) {
label = NEW_LABEL(nd_line(node));
rb_ary_push(labels, (VALUE)label | 1);
ADD_LABEL(optargs, label);
COMPILE_POPED(optargs, "optarg", node->nd_body);
node = node->nd_next;
i += 1;
}
/* last label */
label = NEW_LABEL(nd_line(node_args));
rb_ary_push(labels, (VALUE)label | 1);
ADD_LABEL(optargs, label);
i += 1;
iseq->arg_opts = i;
iseq->arg_opt_table = ALLOC_N(VALUE, i);
MEMCPY(iseq->arg_opt_table, RARRAY_PTR(labels), VALUE, i);
for (j = 0; j < i; j++) {
iseq->arg_opt_table[j] &= ~1;
}
}
else {
iseq->arg_opts = 0;
}
if (node_init) {
if (node_init->nd_1st) { /* m_init */
COMPILE_POPED(optargs, "init arguments (m)", node_init->nd_1st);
}
if (node_init->nd_2nd) { /* p_init */
COMPILE_POPED(optargs, "init arguments (p)", node_init->nd_2nd);
}
}
if (rest_id) {
iseq->arg_rest = get_dyna_var_idx_at_raw(iseq, rest_id);
if (iseq->arg_rest == -1) {
rb_bug("arg_rest: -1");
}
if (iseq->arg_post_start == 0) {
iseq->arg_post_start = iseq->arg_rest + 1;
}
}
if (block_id) {
iseq->arg_block = get_dyna_var_idx_at_raw(iseq, block_id);
}
if (iseq->arg_opts != 0 || iseq->arg_post_len != 0 ||
iseq->arg_rest != -1 || iseq->arg_block != -1) {
iseq->arg_simple = 0;
/* set arg_size: size of arguments */
if (iseq->arg_block != -1) {
iseq->arg_size = iseq->arg_block + 1;
}
else if (iseq->arg_post_len) {
iseq->arg_size = iseq->arg_post_start + iseq->arg_post_len;
}
else if (iseq->arg_rest != -1) {
iseq->arg_size = iseq->arg_rest + 1;
}
else if (iseq->arg_opts) {
iseq->arg_size = iseq->argc + iseq->arg_opts - 1;
}
else {
iseq->arg_size = iseq->argc;
}
}
else {
iseq->arg_simple = 1;
iseq->arg_size = iseq->argc;
}
if (iseq->type == ISEQ_TYPE_BLOCK) {
if (iseq->arg_opts == 0 && iseq->arg_post_len == 0 && iseq->arg_rest == -1) {
if (iseq->argc == 1 && last_comma == 0) {
/* {|a|} */
iseq->arg_simple |= 0x02;
}
}
}
}
else {
iseq->arg_simple = 1;
}
return COMPILE_OK;
}
static int
iseq_set_local_table(rb_iseq_t *iseq, ID *tbl)
{
int size;
if (tbl) {
size = *tbl;
tbl++;
}
else {
size = 0;
}
if (size > 0) {
iseq->local_table = (ID *)ALLOC_N(ID *, size);
MEMCPY(iseq->local_table, tbl, ID *, size);
}
iseq->local_size = iseq->local_table_size = size;
iseq->local_size += 1;
/*
if (lfp == dfp ) { // top, class, method
dfp[-1]: svar
else { // block
dfp[-1]: cref
}
*/