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Sweden-Number/dlls/jscript/compile.c

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/*
* Copyright 2011 Jacek Caban for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <math.h>
#include <assert.h>
#include "jscript.h"
#include "engine.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(jscript);
WINE_DECLARE_DEBUG_CHANNEL(jscript_disas);
typedef struct _statement_ctx_t {
unsigned stack_use;
BOOL using_scope;
BOOL using_except;
unsigned break_label;
unsigned continue_label;
const labelled_statement_t *labelled_stat;
struct _statement_ctx_t *next;
} statement_ctx_t;
typedef struct {
parser_ctx_t *parser;
bytecode_t *code;
unsigned code_off;
unsigned code_size;
unsigned *labels;
unsigned labels_size;
unsigned labels_cnt;
statement_ctx_t *stat_ctx;
function_code_t *func;
variable_declaration_t *var_head;
variable_declaration_t *var_tail;
function_expression_t *func_head;
function_expression_t *func_tail;
} compiler_ctx_t;
static const struct {
const char *op_str;
instr_arg_type_t arg1_type;
instr_arg_type_t arg2_type;
} instr_info[] = {
#define X(n,a,b,c) {#n,b,c},
OP_LIST
#undef X
};
static void dump_instr_arg(instr_arg_type_t type, instr_arg_t *arg)
{
switch(type) {
case ARG_STR:
TRACE_(jscript_disas)("\t%s", debugstr_jsstr(arg->str));
break;
case ARG_BSTR:
TRACE_(jscript_disas)("\t%s", debugstr_wn(arg->bstr, SysStringLen(arg->bstr)));
break;
case ARG_INT:
TRACE_(jscript_disas)("\t%d", arg->uint);
break;
case ARG_UINT:
case ARG_ADDR:
TRACE_(jscript_disas)("\t%u", arg->uint);
break;
case ARG_FUNC:
case ARG_NONE:
break;
default:
assert(0);
}
}
static void dump_code(compiler_ctx_t *ctx, unsigned off)
{
instr_t *instr;
for(instr = ctx->code->instrs+off; instr < ctx->code->instrs+ctx->code_off; instr++) {
TRACE_(jscript_disas)("%d:\t%s", (int)(instr-ctx->code->instrs), instr_info[instr->op].op_str);
if(instr_info[instr->op].arg1_type == ARG_DBL) {
TRACE_(jscript_disas)("\t%lf", instr->u.dbl);
}else {
dump_instr_arg(instr_info[instr->op].arg1_type, instr->u.arg);
dump_instr_arg(instr_info[instr->op].arg2_type, instr->u.arg+1);
}
TRACE_(jscript_disas)("\n");
}
}
static HRESULT compile_expression(compiler_ctx_t*,expression_t*);
static HRESULT compile_statement(compiler_ctx_t*,statement_ctx_t*,statement_t*);
static inline void *compiler_alloc(bytecode_t *code, size_t size)
{
return jsheap_alloc(&code->heap, size);
}
static jsstr_t *compiler_alloc_string_len(compiler_ctx_t *ctx, const WCHAR *str, unsigned len)
{
jsstr_t *new_str;
if(!ctx->code->str_pool_size) {
ctx->code->str_pool = heap_alloc(8 * sizeof(jsstr_t*));
if(!ctx->code->str_pool)
return NULL;
ctx->code->str_pool_size = 8;
}else if(ctx->code->str_pool_size == ctx->code->str_cnt) {
jsstr_t **new_pool;
new_pool = heap_realloc(ctx->code->str_pool, ctx->code->str_pool_size*2*sizeof(jsstr_t*));
if(!new_pool)
return NULL;
ctx->code->str_pool = new_pool;
ctx->code->str_pool_size *= 2;
}
new_str = jsstr_alloc_len(str, len);
if(!new_str)
return NULL;
ctx->code->str_pool[ctx->code->str_cnt++] = new_str;
return new_str;
}
static jsstr_t *compiler_alloc_string(compiler_ctx_t *ctx, const WCHAR *str)
{
return compiler_alloc_string_len(ctx, str, strlenW(str));
}
static BOOL ensure_bstr_slot(compiler_ctx_t *ctx)
{
if(!ctx->code->bstr_pool_size) {
ctx->code->bstr_pool = heap_alloc(8 * sizeof(BSTR));
if(!ctx->code->bstr_pool)
return FALSE;
ctx->code->bstr_pool_size = 8;
}else if(ctx->code->bstr_pool_size == ctx->code->bstr_cnt) {
BSTR *new_pool;
new_pool = heap_realloc(ctx->code->bstr_pool, ctx->code->bstr_pool_size*2*sizeof(BSTR));
if(!new_pool)
return FALSE;
ctx->code->bstr_pool = new_pool;
ctx->code->bstr_pool_size *= 2;
}
return TRUE;
}
static BSTR compiler_alloc_bstr(compiler_ctx_t *ctx, const WCHAR *str)
{
if(!ensure_bstr_slot(ctx))
return NULL;
ctx->code->bstr_pool[ctx->code->bstr_cnt] = SysAllocString(str);
if(!ctx->code->bstr_pool[ctx->code->bstr_cnt])
return NULL;
return ctx->code->bstr_pool[ctx->code->bstr_cnt++];
}
static BSTR compiler_alloc_bstr_len(compiler_ctx_t *ctx, const WCHAR *str, size_t len)
{
if(!ensure_bstr_slot(ctx))
return NULL;
ctx->code->bstr_pool[ctx->code->bstr_cnt] = SysAllocStringLen(str, len);
if(!ctx->code->bstr_pool[ctx->code->bstr_cnt])
return NULL;
return ctx->code->bstr_pool[ctx->code->bstr_cnt++];
}
static unsigned push_instr(compiler_ctx_t *ctx, jsop_t op)
{
assert(ctx->code_size >= ctx->code_off);
if(ctx->code_size == ctx->code_off) {
instr_t *new_instrs;
new_instrs = heap_realloc(ctx->code->instrs, ctx->code_size*2*sizeof(instr_t));
if(!new_instrs)
return 0;
ctx->code->instrs = new_instrs;
ctx->code_size *= 2;
}
ctx->code->instrs[ctx->code_off].op = op;
return ctx->code_off++;
}
static inline instr_t *instr_ptr(compiler_ctx_t *ctx, unsigned off)
{
assert(off < ctx->code_off);
return ctx->code->instrs + off;
}
static HRESULT push_instr_int(compiler_ctx_t *ctx, jsop_t op, LONG arg)
{
unsigned instr;
instr = push_instr(ctx, op);
if(!instr)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->u.arg->lng = arg;
return S_OK;
}
static HRESULT push_instr_str(compiler_ctx_t *ctx, jsop_t op, const WCHAR *arg)
{
unsigned instr;
jsstr_t *str;
str = compiler_alloc_string(ctx, arg);
if(!str)
return E_OUTOFMEMORY;
instr = push_instr(ctx, op);
if(!instr)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->u.arg->str = str;
return S_OK;
}
static HRESULT push_instr_bstr(compiler_ctx_t *ctx, jsop_t op, const WCHAR *arg)
{
unsigned instr;
WCHAR *str;
str = compiler_alloc_bstr(ctx, arg);
if(!str)
return E_OUTOFMEMORY;
instr = push_instr(ctx, op);
if(!instr)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->u.arg->bstr = str;
return S_OK;
}
static HRESULT push_instr_bstr_uint(compiler_ctx_t *ctx, jsop_t op, const WCHAR *arg1, unsigned arg2)
{
unsigned instr;
WCHAR *str;
str = compiler_alloc_bstr(ctx, arg1);
if(!str)
return E_OUTOFMEMORY;
instr = push_instr(ctx, op);
if(!instr)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->u.arg[0].bstr = str;
instr_ptr(ctx, instr)->u.arg[1].uint = arg2;
return S_OK;
}
static HRESULT push_instr_uint_str(compiler_ctx_t *ctx, jsop_t op, unsigned arg1, const WCHAR *arg2)
{
unsigned instr;
jsstr_t *str;
str = compiler_alloc_string(ctx, arg2);
if(!str)
return E_OUTOFMEMORY;
instr = push_instr(ctx, op);
if(!instr)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->u.arg[0].uint = arg1;
instr_ptr(ctx, instr)->u.arg[1].str = str;
return S_OK;
}
static HRESULT push_instr_double(compiler_ctx_t *ctx, jsop_t op, double arg)
{
unsigned instr;
instr = push_instr(ctx, op);
if(!instr)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->u.dbl = arg;
return S_OK;
}
static inline void set_arg_uint(compiler_ctx_t *ctx, unsigned instr, unsigned arg)
{
instr_ptr(ctx, instr)->u.arg->uint = arg;
}
static HRESULT push_instr_uint(compiler_ctx_t *ctx, jsop_t op, unsigned arg)
{
unsigned instr;
instr = push_instr(ctx, op);
if(!instr)
return E_OUTOFMEMORY;
set_arg_uint(ctx, instr, arg);
return S_OK;
}
static HRESULT compile_binary_expression(compiler_ctx_t *ctx, binary_expression_t *expr, jsop_t op)
{
HRESULT hres;
hres = compile_expression(ctx, expr->expression1);
if(FAILED(hres))
return hres;
hres = compile_expression(ctx, expr->expression2);
if(FAILED(hres))
return hres;
return push_instr(ctx, op) ? S_OK : E_OUTOFMEMORY;
}
static HRESULT compile_unary_expression(compiler_ctx_t *ctx, unary_expression_t *expr, jsop_t op)
{
HRESULT hres;
hres = compile_expression(ctx, expr->expression);
if(FAILED(hres))
return hres;
return push_instr(ctx, op) ? S_OK : E_OUTOFMEMORY;
}
/* ECMA-262 3rd Edition 11.2.1 */
static HRESULT compile_member_expression(compiler_ctx_t *ctx, member_expression_t *expr)
{
HRESULT hres;
hres = compile_expression(ctx, expr->expression);
if(FAILED(hres))
return hres;
return push_instr_bstr(ctx, OP_member, expr->identifier);
}
#define LABEL_FLAG 0x80000000
static unsigned alloc_label(compiler_ctx_t *ctx)
{
if(!ctx->labels_size) {
ctx->labels = heap_alloc(8 * sizeof(*ctx->labels));
if(!ctx->labels)
return 0;
ctx->labels_size = 8;
}else if(ctx->labels_size == ctx->labels_cnt) {
unsigned *new_labels;
new_labels = heap_realloc(ctx->labels, 2*ctx->labels_size*sizeof(*ctx->labels));
if(!new_labels)
return 0;
ctx->labels = new_labels;
ctx->labels_size *= 2;
}
return ctx->labels_cnt++ | LABEL_FLAG;
}
static void label_set_addr(compiler_ctx_t *ctx, unsigned label)
{
assert(label & LABEL_FLAG);
ctx->labels[label & ~LABEL_FLAG] = ctx->code_off;
}
static inline BOOL is_memberid_expr(expression_type_t type)
{
return type == EXPR_IDENT || type == EXPR_MEMBER || type == EXPR_ARRAY;
}
static HRESULT compile_memberid_expression(compiler_ctx_t *ctx, expression_t *expr, unsigned flags)
{
HRESULT hres = S_OK;
switch(expr->type) {
case EXPR_IDENT: {
identifier_expression_t *ident_expr = (identifier_expression_t*)expr;
hres = push_instr_bstr_uint(ctx, OP_identid, ident_expr->identifier, flags);
break;
}
case EXPR_ARRAY: {
binary_expression_t *array_expr = (binary_expression_t*)expr;
hres = compile_expression(ctx, array_expr->expression1);
if(FAILED(hres))
return hres;
hres = compile_expression(ctx, array_expr->expression2);
if(FAILED(hres))
return hres;
hres = push_instr_uint(ctx, OP_memberid, flags);
break;
}
case EXPR_MEMBER: {
member_expression_t *member_expr = (member_expression_t*)expr;
hres = compile_expression(ctx, member_expr->expression);
if(FAILED(hres))
return hres;
/* FIXME: Potential optimization */
hres = push_instr_str(ctx, OP_str, member_expr->identifier);
if(FAILED(hres))
return hres;
hres = push_instr_uint(ctx, OP_memberid, flags);
break;
}
default:
assert(0);
}
return hres;
}
static HRESULT compile_increment_expression(compiler_ctx_t *ctx, unary_expression_t *expr, jsop_t op, int n)
{
HRESULT hres;
if(!is_memberid_expr(expr->expression->type)) {
hres = compile_expression(ctx, expr->expression);
if(FAILED(hres))
return hres;
return push_instr_uint(ctx, OP_throw_ref, JS_E_ILLEGAL_ASSIGN);
}
hres = compile_memberid_expression(ctx, expr->expression, fdexNameEnsure);
if(FAILED(hres))
return hres;
return push_instr_int(ctx, op, n);
}
/* ECMA-262 3rd Edition 11.14 */
static HRESULT compile_comma_expression(compiler_ctx_t *ctx, binary_expression_t *expr)
{
HRESULT hres;
hres = compile_expression(ctx, expr->expression1);
if(FAILED(hres))
return hres;
if(!push_instr(ctx, OP_pop))
return E_OUTOFMEMORY;
return compile_expression(ctx, expr->expression2);
}
/* ECMA-262 3rd Edition 11.11 */
static HRESULT compile_logical_expression(compiler_ctx_t *ctx, binary_expression_t *expr, jsop_t op)
{
unsigned instr;
HRESULT hres;
hres = compile_expression(ctx, expr->expression1);
if(FAILED(hres))
return hres;
instr = push_instr(ctx, op);
if(!instr)
return E_OUTOFMEMORY;
hres = compile_expression(ctx, expr->expression2);
if(FAILED(hres))
return hres;
set_arg_uint(ctx, instr, ctx->code_off);
return S_OK;
}
/* ECMA-262 3rd Edition 11.12 */
static HRESULT compile_conditional_expression(compiler_ctx_t *ctx, conditional_expression_t *expr)
{
unsigned jmp_false, jmp_end;
HRESULT hres;
hres = compile_expression(ctx, expr->expression);
if(FAILED(hres))
return hres;
jmp_false = push_instr(ctx, OP_cnd_z);
if(!jmp_false)
return E_OUTOFMEMORY;
hres = compile_expression(ctx, expr->true_expression);
if(FAILED(hres))
return hres;
jmp_end = push_instr(ctx, OP_jmp);
if(!jmp_end)
return E_OUTOFMEMORY;
set_arg_uint(ctx, jmp_false, ctx->code_off);
if(!push_instr(ctx, OP_pop))
return E_OUTOFMEMORY;
hres = compile_expression(ctx, expr->false_expression);
if(FAILED(hres))
return hres;
set_arg_uint(ctx, jmp_end, ctx->code_off);
return S_OK;
}
static HRESULT compile_new_expression(compiler_ctx_t *ctx, call_expression_t *expr)
{
unsigned arg_cnt = 0;
argument_t *arg;
HRESULT hres;
hres = compile_expression(ctx, expr->expression);
if(FAILED(hres))
return hres;
for(arg = expr->argument_list; arg; arg = arg->next) {
hres = compile_expression(ctx, arg->expr);
if(FAILED(hres))
return hres;
arg_cnt++;
}
return push_instr_uint(ctx, OP_new, arg_cnt);
}
static HRESULT compile_call_expression(compiler_ctx_t *ctx, call_expression_t *expr, BOOL *no_ret)
{
unsigned arg_cnt = 0;
argument_t *arg;
unsigned instr;
jsop_t op;
HRESULT hres;
if(is_memberid_expr(expr->expression->type)) {
op = OP_call_member;
hres = compile_memberid_expression(ctx, expr->expression, 0);
}else {
op = OP_call;
hres = compile_expression(ctx, expr->expression);
}
if(FAILED(hres))
return hres;
for(arg = expr->argument_list; arg; arg = arg->next) {
hres = compile_expression(ctx, arg->expr);
if(FAILED(hres))
return hres;
arg_cnt++;
}
instr = push_instr(ctx, op);
if(!instr)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->u.arg[0].uint = arg_cnt;
instr_ptr(ctx, instr)->u.arg[1].lng = no_ret == NULL;
if(no_ret)
*no_ret = TRUE;
return S_OK;
}
static HRESULT compile_delete_expression(compiler_ctx_t *ctx, unary_expression_t *expr)
{
HRESULT hres;
switch(expr->expression->type) {
case EXPR_ARRAY: {
binary_expression_t *array_expr = (binary_expression_t*)expr->expression;
hres = compile_expression(ctx, array_expr->expression1);
if(FAILED(hres))
return hres;
hres = compile_expression(ctx, array_expr->expression2);
if(FAILED(hres))
return hres;
if(!push_instr(ctx, OP_delete))
return E_OUTOFMEMORY;
break;
}
case EXPR_MEMBER: {
member_expression_t *member_expr = (member_expression_t*)expr->expression;
hres = compile_expression(ctx, member_expr->expression);
if(FAILED(hres))
return hres;
/* FIXME: Potential optimization */
hres = push_instr_str(ctx, OP_str, member_expr->identifier);
if(FAILED(hres))
return hres;
if(!push_instr(ctx, OP_delete))
return E_OUTOFMEMORY;
break;
}
case EXPR_IDENT:
return push_instr_bstr(ctx, OP_delete_ident, ((identifier_expression_t*)expr->expression)->identifier);
default: {
const WCHAR fixmeW[] = {'F','I','X','M','E',0};
WARN("invalid delete, unimplemented exception message\n");
hres = compile_expression(ctx, expr->expression);
if(FAILED(hres))
return hres;
return push_instr_uint_str(ctx, OP_throw_type, JS_E_INVALID_DELETE, fixmeW);
}
}
return S_OK;
}
static HRESULT compile_assign_expression(compiler_ctx_t *ctx, binary_expression_t *expr, jsop_t op)
{
BOOL use_throw_path = FALSE;
unsigned arg_cnt = 0;
HRESULT hres;
if(expr->expression1->type == EXPR_CALL) {
call_expression_t *call_expr = (call_expression_t*)expr->expression1;
argument_t *arg;
if(op != OP_LAST) {
FIXME("op %d not supported on parametrized assign expressions\n", op);
return E_NOTIMPL;
}
if(is_memberid_expr(call_expr->expression->type) && call_expr->argument_list) {
hres = compile_memberid_expression(ctx, call_expr->expression, fdexNameEnsure);
if(FAILED(hres))
return hres;
for(arg = call_expr->argument_list; arg; arg = arg->next) {
hres = compile_expression(ctx, arg->expr);
if(FAILED(hres))
return hres;
arg_cnt++;
}
}else {
use_throw_path = TRUE;
}
}else if(is_memberid_expr(expr->expression1->type)) {
hres = compile_memberid_expression(ctx, expr->expression1, fdexNameEnsure);
if(FAILED(hres))
return hres;
}else {
use_throw_path = TRUE;
}
if(use_throw_path) {
/* Illegal assignment: evaluate and throw */
hres = compile_expression(ctx, expr->expression1);
if(FAILED(hres))
return hres;
hres = compile_expression(ctx, expr->expression2);
if(FAILED(hres))
return hres;
if(op != OP_LAST && !push_instr(ctx, op))
return E_OUTOFMEMORY;
return push_instr_uint(ctx, OP_throw_ref, JS_E_ILLEGAL_ASSIGN);
}
if(op != OP_LAST && !push_instr(ctx, OP_refval))
return E_OUTOFMEMORY;
hres = compile_expression(ctx, expr->expression2);
if(FAILED(hres))
return hres;
if(op != OP_LAST && !push_instr(ctx, op))
return E_OUTOFMEMORY;
if(arg_cnt)
return push_instr_uint(ctx, OP_assign_call, arg_cnt);
if(!push_instr(ctx, OP_assign))
return E_OUTOFMEMORY;
return S_OK;
}
static HRESULT compile_typeof_expression(compiler_ctx_t *ctx, unary_expression_t *expr)
{
jsop_t op;
HRESULT hres;
if(is_memberid_expr(expr->expression->type)) {
if(expr->expression->type == EXPR_IDENT)
return push_instr_bstr(ctx, OP_typeofident, ((identifier_expression_t*)expr->expression)->identifier);
op = OP_typeofid;
hres = compile_memberid_expression(ctx, expr->expression, 0);
}else {
op = OP_typeof;
hres = compile_expression(ctx, expr->expression);
}
if(FAILED(hres))
return hres;
return push_instr(ctx, op) ? S_OK : E_OUTOFMEMORY;
}
static HRESULT compile_literal(compiler_ctx_t *ctx, literal_t *literal)
{
switch(literal->type) {
case LT_BOOL:
return push_instr_int(ctx, OP_bool, literal->u.bval);
case LT_DOUBLE:
return push_instr_double(ctx, OP_double, literal->u.dval);
case LT_NULL:
return push_instr(ctx, OP_null) ? S_OK : E_OUTOFMEMORY;
case LT_STRING:
return push_instr_str(ctx, OP_str, literal->u.wstr);
case LT_REGEXP: {
unsigned instr;
jsstr_t *str;
str = compiler_alloc_string_len(ctx, literal->u.regexp.str, literal->u.regexp.str_len);
if(!str)
return E_OUTOFMEMORY;
instr = push_instr(ctx, OP_regexp);
if(!instr)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->u.arg[0].str = str;
instr_ptr(ctx, instr)->u.arg[1].uint = literal->u.regexp.flags;
return S_OK;
}
default:
assert(0);
return E_FAIL;
}
}
static HRESULT literal_as_bstr(compiler_ctx_t *ctx, literal_t *literal, BSTR *str)
{
switch(literal->type) {
case LT_STRING:
*str = compiler_alloc_bstr(ctx, literal->u.wstr);
break;
case LT_DOUBLE: {
jsstr_t *jsstr;
HRESULT hres;
hres = double_to_string(literal->u.dval, &jsstr);
if(FAILED(hres))
return hres;
*str = SysAllocStringLen(jsstr->str, jsstr_length(jsstr));
jsstr_release(jsstr);
break;
}
default:
assert(0);
}
return *str ? S_OK : E_OUTOFMEMORY;
}
static HRESULT compile_array_literal(compiler_ctx_t *ctx, array_literal_expression_t *expr)
{
unsigned i, elem_cnt = expr->length;
array_element_t *iter;
HRESULT hres;
for(iter = expr->element_list; iter; iter = iter->next) {
elem_cnt += iter->elision+1;
for(i=0; i < iter->elision; i++) {
if(!push_instr(ctx, OP_undefined))
return E_OUTOFMEMORY;
}
hres = compile_expression(ctx, iter->expr);
if(FAILED(hres))
return hres;
}
for(i=0; i < expr->length; i++) {
if(!push_instr(ctx, OP_undefined))
return E_OUTOFMEMORY;
}
return push_instr_uint(ctx, OP_carray, elem_cnt);
}
static HRESULT compile_object_literal(compiler_ctx_t *ctx, property_value_expression_t *expr)
{
prop_val_t *iter;
unsigned instr;
BSTR name;
HRESULT hres;
if(!push_instr(ctx, OP_new_obj))
return E_OUTOFMEMORY;
for(iter = expr->property_list; iter; iter = iter->next) {
hres = literal_as_bstr(ctx, iter->name, &name);
if(FAILED(hres))
return hres;
hres = compile_expression(ctx, iter->value);
if(FAILED(hres))
return hres;
instr = push_instr(ctx, OP_obj_prop);
if(!instr)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->u.arg->bstr = name;
}
return S_OK;
}
static HRESULT compile_function_expression(compiler_ctx_t *ctx, function_expression_t *expr)
{
ctx->func_tail = ctx->func_tail ? (ctx->func_tail->next = expr) : (ctx->func_head = expr);
/* FIXME: not exactly right */
if(expr->identifier) {
ctx->func->func_cnt++;
return push_instr_bstr(ctx, OP_ident, expr->identifier);
}
return push_instr_uint(ctx, OP_func, ctx->func->func_cnt++);
}
static HRESULT compile_expression_noret(compiler_ctx_t *ctx, expression_t *expr, BOOL *no_ret)
{
switch(expr->type) {
case EXPR_ADD:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_add);
case EXPR_AND:
return compile_logical_expression(ctx, (binary_expression_t*)expr, OP_cnd_z);
case EXPR_ARRAY:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_array);
case EXPR_ARRAYLIT:
return compile_array_literal(ctx, (array_literal_expression_t*)expr);
case EXPR_ASSIGN:
return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_LAST);
case EXPR_ASSIGNADD:
return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_add);
case EXPR_ASSIGNAND:
return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_and);
case EXPR_ASSIGNSUB:
return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_sub);
case EXPR_ASSIGNMUL:
return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_mul);
case EXPR_ASSIGNDIV:
return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_div);
case EXPR_ASSIGNMOD:
return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_mod);
case EXPR_ASSIGNOR:
return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_or);
case EXPR_ASSIGNLSHIFT:
return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_lshift);
case EXPR_ASSIGNRSHIFT:
return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_rshift);
case EXPR_ASSIGNRRSHIFT:
return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_rshift2);
case EXPR_ASSIGNXOR:
return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_xor);
case EXPR_BAND:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_and);
case EXPR_BITNEG:
return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_bneg);
case EXPR_BOR:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_or);
case EXPR_CALL:
return compile_call_expression(ctx, (call_expression_t*)expr, no_ret);
case EXPR_COMMA:
return compile_comma_expression(ctx, (binary_expression_t*)expr);
case EXPR_COND:
return compile_conditional_expression(ctx, (conditional_expression_t*)expr);
case EXPR_DELETE:
return compile_delete_expression(ctx, (unary_expression_t*)expr);
case EXPR_DIV:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_div);
case EXPR_EQ:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_eq);
case EXPR_EQEQ:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_eq2);
case EXPR_FUNC:
return compile_function_expression(ctx, (function_expression_t*)expr);
case EXPR_GREATER:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_gt);
case EXPR_GREATEREQ:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_gteq);
case EXPR_IDENT:
return push_instr_bstr(ctx, OP_ident, ((identifier_expression_t*)expr)->identifier);
case EXPR_IN:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_in);
case EXPR_INSTANCEOF:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_instanceof);
case EXPR_LESS:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_lt);
case EXPR_LESSEQ:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_lteq);
case EXPR_LITERAL:
return compile_literal(ctx, ((literal_expression_t*)expr)->literal);
case EXPR_LOGNEG:
return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_neg);
case EXPR_LSHIFT:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_lshift);
case EXPR_MEMBER:
return compile_member_expression(ctx, (member_expression_t*)expr);
case EXPR_MINUS:
return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_minus);
case EXPR_MOD:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_mod);
case EXPR_MUL:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_mul);
case EXPR_NEW:
return compile_new_expression(ctx, (call_expression_t*)expr);
case EXPR_NOTEQ:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_neq);
case EXPR_NOTEQEQ:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_neq2);
case EXPR_OR:
return compile_logical_expression(ctx, (binary_expression_t*)expr, OP_cnd_nz);
case EXPR_PLUS:
return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_tonum);
case EXPR_POSTDEC:
return compile_increment_expression(ctx, (unary_expression_t*)expr, OP_postinc, -1);
case EXPR_POSTINC:
return compile_increment_expression(ctx, (unary_expression_t*)expr, OP_postinc, 1);
case EXPR_PREDEC:
return compile_increment_expression(ctx, (unary_expression_t*)expr, OP_preinc, -1);
case EXPR_PREINC:
return compile_increment_expression(ctx, (unary_expression_t*)expr, OP_preinc, 1);
case EXPR_PROPVAL:
return compile_object_literal(ctx, (property_value_expression_t*)expr);
case EXPR_RSHIFT:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_rshift);
case EXPR_RRSHIFT:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_rshift2);
case EXPR_SUB:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_sub);
case EXPR_THIS:
return push_instr(ctx, OP_this) ? S_OK : E_OUTOFMEMORY;
case EXPR_TYPEOF:
return compile_typeof_expression(ctx, (unary_expression_t*)expr);
case EXPR_VOID:
return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_void);
case EXPR_BXOR:
return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_xor);
default:
assert(0);
}
return S_OK;
}
static HRESULT compile_expression(compiler_ctx_t *ctx, expression_t *expr)
{
return compile_expression_noret(ctx, expr, NULL);
}
static inline BOOL is_loop_statement(statement_type_t type)
{
return type == STAT_FOR || type == STAT_FORIN || type == STAT_WHILE;
}
/* ECMA-262 3rd Edition 12.1 */
static HRESULT compile_block_statement(compiler_ctx_t *ctx, statement_t *iter)
{
HRESULT hres;
/* FIXME: do it only if needed */
if(!iter)
return push_instr(ctx, OP_undefined) ? S_OK : E_OUTOFMEMORY;
while(1) {
hres = compile_statement(ctx, NULL, iter);
if(FAILED(hres))
return hres;
iter = iter->next;
if(!iter)
break;
if(!push_instr(ctx, OP_pop))
return E_OUTOFMEMORY;
}
return S_OK;
}
/* ECMA-262 3rd Edition 12.2 */
static HRESULT compile_variable_list(compiler_ctx_t *ctx, variable_declaration_t *list)
{
variable_declaration_t *iter;
HRESULT hres;
assert(list != NULL);
if(ctx->var_tail)
ctx->var_tail->global_next = list;
else
ctx->var_head = list;
for(iter = list; iter; iter = iter->next) {
ctx->func->var_cnt++;
iter->global_next = iter->next;
if(!iter->next)
ctx->var_tail = iter;
if(!iter->expr)
continue;
hres = compile_expression(ctx, iter->expr);
if(FAILED(hres))
return hres;
hres = push_instr_bstr(ctx, OP_var_set, iter->identifier);
if(FAILED(hres))
return hres;
}
return S_OK;
}
/* ECMA-262 3rd Edition 12.2 */
static HRESULT compile_var_statement(compiler_ctx_t *ctx, var_statement_t *stat)
{
HRESULT hres;
hres = compile_variable_list(ctx, stat->variable_list);
if(FAILED(hres))
return hres;
return push_instr(ctx, OP_undefined) ? S_OK : E_OUTOFMEMORY;
}
/* ECMA-262 3rd Edition 12.4 */
static HRESULT compile_expression_statement(compiler_ctx_t *ctx, expression_statement_t *stat)
{
BOOL no_ret = FALSE;
HRESULT hres;
hres = compile_expression_noret(ctx, stat->expr, &no_ret);
if(FAILED(hres))
return hres;
/* FIXME: that's a big potential optimization */
if(no_ret && !push_instr(ctx, OP_undefined))
return E_OUTOFMEMORY;
return S_OK;
}
/* ECMA-262 3rd Edition 12.5 */
static HRESULT compile_if_statement(compiler_ctx_t *ctx, if_statement_t *stat)
{
unsigned jmp_else, jmp_end;
HRESULT hres;
hres = compile_expression(ctx, stat->expr);
if(FAILED(hres))
return hres;
jmp_else = push_instr(ctx, OP_jmp_z);
if(!jmp_else)
return E_OUTOFMEMORY;
hres = compile_statement(ctx, NULL, stat->if_stat);
if(FAILED(hres))
return hres;
jmp_end = push_instr(ctx, OP_jmp);
if(!jmp_end)
return E_OUTOFMEMORY;
set_arg_uint(ctx, jmp_else, ctx->code_off);
if(stat->else_stat) {
hres = compile_statement(ctx, NULL, stat->else_stat);
if(FAILED(hres))
return hres;
}else {
/* FIXME: We could sometimes avoid it */
if(!push_instr(ctx, OP_undefined))
return E_OUTOFMEMORY;
}
set_arg_uint(ctx, jmp_end, ctx->code_off);
return S_OK;
}
/* ECMA-262 3rd Edition 12.6.2 */
static HRESULT compile_while_statement(compiler_ctx_t *ctx, while_statement_t *stat)
{
statement_ctx_t stat_ctx = {0, FALSE, FALSE};
unsigned jmp_off;
HRESULT hres;
stat_ctx.break_label = alloc_label(ctx);
if(!stat_ctx.break_label)
return E_OUTOFMEMORY;
stat_ctx.continue_label = alloc_label(ctx);
if(!stat_ctx.continue_label)
return E_OUTOFMEMORY;
if(!stat->do_while) {
/* FIXME: avoid */
if(!push_instr(ctx, OP_undefined))
return E_OUTOFMEMORY;
jmp_off = ctx->code_off;
label_set_addr(ctx, stat_ctx.continue_label);
hres = compile_expression(ctx, stat->expr);
if(FAILED(hres))
return hres;
hres = push_instr_uint(ctx, OP_jmp_z, stat_ctx.break_label);
if(FAILED(hres))
return hres;
if(!push_instr(ctx, OP_pop))
return E_OUTOFMEMORY;
}else {
jmp_off = ctx->code_off;
}
hres = compile_statement(ctx, &stat_ctx, stat->statement);
if(FAILED(hres))
return hres;
if(stat->do_while) {
label_set_addr(ctx, stat_ctx.continue_label);
hres = compile_expression(ctx, stat->expr);
if(FAILED(hres))
return hres;
hres = push_instr_uint(ctx, OP_jmp_z, stat_ctx.break_label);
if(FAILED(hres))
return hres;
if(!push_instr(ctx, OP_pop))
return E_OUTOFMEMORY;
}
hres = push_instr_uint(ctx, OP_jmp, jmp_off);
if(FAILED(hres))
return hres;
label_set_addr(ctx, stat_ctx.break_label);
return S_OK;
}
/* ECMA-262 3rd Edition 12.6.3 */
static HRESULT compile_for_statement(compiler_ctx_t *ctx, for_statement_t *stat)
{
statement_ctx_t stat_ctx = {0, FALSE, FALSE};
unsigned expr_off;
HRESULT hres;
if(stat->variable_list) {
hres = compile_variable_list(ctx, stat->variable_list);
if(FAILED(hres))
return hres;
}else if(stat->begin_expr) {
BOOL no_ret = FALSE;
hres = compile_expression_noret(ctx, stat->begin_expr, &no_ret);
if(FAILED(hres))
return hres;
if(!no_ret && !push_instr(ctx, OP_pop))
return E_OUTOFMEMORY;
}
stat_ctx.break_label = alloc_label(ctx);
if(!stat_ctx.break_label)
return E_OUTOFMEMORY;
stat_ctx.continue_label = alloc_label(ctx);
if(!stat_ctx.continue_label)
return E_OUTOFMEMORY;
/* FIXME: avoid */
if(!push_instr(ctx, OP_undefined))
return E_OUTOFMEMORY;
expr_off = ctx->code_off;
if(stat->expr) {
hres = compile_expression(ctx, stat->expr);
if(FAILED(hres))
return hres;
hres = push_instr_uint(ctx, OP_jmp_z, stat_ctx.break_label);
if(FAILED(hres))
return hres;
}
if(!push_instr(ctx, OP_pop))
return E_OUTOFMEMORY;
hres = compile_statement(ctx, &stat_ctx, stat->statement);
if(FAILED(hres))
return hres;
label_set_addr(ctx, stat_ctx.continue_label);
if(stat->end_expr) {
BOOL no_ret = FALSE;
hres = compile_expression_noret(ctx, stat->end_expr, &no_ret);
if(FAILED(hres))
return hres;
if(!no_ret && !push_instr(ctx, OP_pop))
return E_OUTOFMEMORY;
}
hres = push_instr_uint(ctx, OP_jmp, expr_off);
if(FAILED(hres))
return hres;
label_set_addr(ctx, stat_ctx.break_label);
return S_OK;
}
/* ECMA-262 3rd Edition 12.6.4 */
static HRESULT compile_forin_statement(compiler_ctx_t *ctx, forin_statement_t *stat)
{
statement_ctx_t stat_ctx = {4, FALSE, FALSE};
HRESULT hres;
if(stat->variable) {
hres = compile_variable_list(ctx, stat->variable);
if(FAILED(hres))
return hres;
}
stat_ctx.break_label = alloc_label(ctx);
if(!stat_ctx.break_label)
return E_OUTOFMEMORY;
stat_ctx.continue_label = alloc_label(ctx);
if(!stat_ctx.continue_label)
return E_OUTOFMEMORY;
hres = compile_expression(ctx, stat->in_expr);
if(FAILED(hres))
return hres;
if(stat->variable) {
hres = push_instr_bstr_uint(ctx, OP_identid, stat->variable->identifier, fdexNameEnsure);
if(FAILED(hres))
return hres;
}else if(is_memberid_expr(stat->expr->type)) {
hres = compile_memberid_expression(ctx, stat->expr, fdexNameEnsure);
if(FAILED(hres))
return hres;
}else {
hres = push_instr_uint(ctx, OP_throw_ref, JS_E_ILLEGAL_ASSIGN);
if(FAILED(hres))
return hres;
/* FIXME: compile statement anyways when we depend on compiler to check errors */
return S_OK;
}
hres = push_instr_int(ctx, OP_int, DISPID_STARTENUM);
if(FAILED(hres))
return hres;
/* FIXME: avoid */
if(!push_instr(ctx, OP_undefined))
return E_OUTOFMEMORY;
label_set_addr(ctx, stat_ctx.continue_label);
hres = push_instr_uint(ctx, OP_forin, stat_ctx.break_label);
if(FAILED(hres))
return E_OUTOFMEMORY;
hres = compile_statement(ctx, &stat_ctx, stat->statement);
if(FAILED(hres))
return hres;
hres = push_instr_uint(ctx, OP_jmp, stat_ctx.continue_label);
if(FAILED(hres))
return hres;
label_set_addr(ctx, stat_ctx.break_label);
return S_OK;
}
static HRESULT pop_to_stat(compiler_ctx_t *ctx, BOOL var_stack, BOOL scope_stack, statement_ctx_t *stat_ctx)
{
unsigned stack_pop = 0;
statement_ctx_t *iter;
for(iter = ctx->stat_ctx; iter != stat_ctx; iter = iter->next) {
if(scope_stack) {
if(iter->using_scope && !push_instr(ctx, OP_pop_scope))
return E_OUTOFMEMORY;
if(iter->using_except && !push_instr(ctx, OP_pop_except))
return E_OUTOFMEMORY;
}
stack_pop += iter->stack_use;
}
if(var_stack) {
/* FIXME: optimize */
while(stack_pop--) {
if(!push_instr(ctx, OP_pop))
return E_OUTOFMEMORY;
}
}
return S_OK;
}
/* ECMA-262 3rd Edition 12.7 */
static HRESULT compile_continue_statement(compiler_ctx_t *ctx, branch_statement_t *stat)
{
statement_ctx_t *pop_ctx;
HRESULT hres;
if(stat->identifier) {
statement_t *label_stat;
statement_ctx_t *iter;
pop_ctx = NULL;
for(iter = ctx->stat_ctx; iter; iter = iter->next) {
if(iter->continue_label)
pop_ctx = iter;
if(iter->labelled_stat && !strcmpW(iter->labelled_stat->identifier, stat->identifier))
break;
}
if(!iter) {
WARN("Label not found\n");
return JS_E_LABEL_NOT_FOUND;
}
/* Labelled continue are allowed only on loops */
for(label_stat = iter->labelled_stat->statement;
label_stat->type == STAT_LABEL;
label_stat = ((labelled_statement_t*)label_stat)->statement);
if(!is_loop_statement(label_stat->type)) {
WARN("Label is not a loop\n");
return JS_E_INVALID_CONTINUE;
}
assert(pop_ctx != NULL);
}else {
for(pop_ctx = ctx->stat_ctx; pop_ctx; pop_ctx = pop_ctx->next) {
if(pop_ctx->continue_label)
break;
}
if(!pop_ctx) {
WARN("continue outside loop\n");
return JS_E_INVALID_CONTINUE;
}
}
hres = pop_to_stat(ctx, TRUE, TRUE, pop_ctx);
if(FAILED(hres))
return hres;
if(!push_instr(ctx, OP_undefined))
return E_OUTOFMEMORY;
return push_instr_uint(ctx, OP_jmp, pop_ctx->continue_label);
}
/* ECMA-262 3rd Edition 12.8 */
static HRESULT compile_break_statement(compiler_ctx_t *ctx, branch_statement_t *stat)
{
statement_ctx_t *pop_ctx;
HRESULT hres;
if(stat->identifier) {
for(pop_ctx = ctx->stat_ctx; pop_ctx; pop_ctx = pop_ctx->next) {
if(pop_ctx->labelled_stat && !strcmpW(pop_ctx->labelled_stat->identifier, stat->identifier)) {
assert(pop_ctx->break_label);
break;
}
}
if(!pop_ctx) {
WARN("Label not found\n");
return JS_E_LABEL_NOT_FOUND;
}
}else {
for(pop_ctx = ctx->stat_ctx; pop_ctx; pop_ctx = pop_ctx->next) {
if(pop_ctx->break_label && !pop_ctx->labelled_stat)
break;
}
if(!pop_ctx) {
WARN("Break outside loop\n");
return JS_E_INVALID_BREAK;
}
}
hres = pop_to_stat(ctx, TRUE, TRUE, pop_ctx->next);
if(FAILED(hres))
return hres;
if(!push_instr(ctx, OP_undefined))
return E_OUTOFMEMORY;
return push_instr_uint(ctx, OP_jmp, pop_ctx->break_label);
}
/* ECMA-262 3rd Edition 12.9 */
static HRESULT compile_return_statement(compiler_ctx_t *ctx, expression_statement_t *stat)
{
HRESULT hres;
hres = pop_to_stat(ctx, TRUE, FALSE, NULL);
if(FAILED(hres))
return hres;
if(stat->expr) {
hres = compile_expression(ctx, stat->expr);
if(FAILED(hres))
return hres;
}
hres = pop_to_stat(ctx, FALSE, TRUE, NULL);
if(FAILED(hres))
return hres;
return push_instr(ctx, OP_ret) ? S_OK : E_OUTOFMEMORY;
}
/* ECMA-262 3rd Edition 12.10 */
static HRESULT compile_with_statement(compiler_ctx_t *ctx, with_statement_t *stat)
{
statement_ctx_t stat_ctx = {0, TRUE, FALSE};
HRESULT hres;
hres = compile_expression(ctx, stat->expr);
if(FAILED(hres))
return hres;
if(!push_instr(ctx, OP_push_scope))
return E_OUTOFMEMORY;
hres = compile_statement(ctx, &stat_ctx, stat->statement);
if(FAILED(hres))
return hres;
if(!push_instr(ctx, OP_pop_scope))
return E_OUTOFMEMORY;
return S_OK;
}
/* ECMA-262 3rd Edition 12.10 */
static HRESULT compile_labelled_statement(compiler_ctx_t *ctx, labelled_statement_t *stat)
{
statement_ctx_t stat_ctx = {0, FALSE, FALSE, 0, 0, stat}, *iter;
HRESULT hres;
for(iter = ctx->stat_ctx; iter; iter = iter->next) {
if(iter->labelled_stat && !strcmpW(iter->labelled_stat->identifier, stat->identifier)) {
WARN("Label %s redefined\n", debugstr_w(stat->identifier));
return JS_E_LABEL_REDEFINED;
}
}
/* Labelled breaks are allowed for any labelled statements, not only loops (violating spec) */
stat_ctx.break_label = alloc_label(ctx);
if(!stat_ctx.break_label)
return E_OUTOFMEMORY;
hres = compile_statement(ctx, &stat_ctx, stat->statement);
if(FAILED(hres))
return hres;
label_set_addr(ctx, stat_ctx.break_label);
return S_OK;
}
/* ECMA-262 3rd Edition 12.13 */
static HRESULT compile_switch_statement(compiler_ctx_t *ctx, switch_statement_t *stat)
{
statement_ctx_t stat_ctx = {0, FALSE, FALSE};
unsigned case_cnt = 0, *case_jmps, i, default_jmp;
BOOL have_default = FALSE;
statement_t *stat_iter;
case_clausule_t *iter;
HRESULT hres;
hres = compile_expression(ctx, stat->expr);
if(FAILED(hres))
return hres;
stat_ctx.break_label = alloc_label(ctx);
if(!stat_ctx.break_label)
return E_OUTOFMEMORY;
for(iter = stat->case_list; iter; iter = iter->next) {
if(iter->expr)
case_cnt++;
}
case_jmps = heap_alloc(case_cnt * sizeof(*case_jmps));
if(!case_jmps)
return E_OUTOFMEMORY;
i = 0;
for(iter = stat->case_list; iter; iter = iter->next) {
if(!iter->expr) {
have_default = TRUE;
continue;
}
hres = compile_expression(ctx, iter->expr);
if(FAILED(hres))
break;
case_jmps[i] = push_instr(ctx, OP_case);
if(!case_jmps[i]) {
hres = E_OUTOFMEMORY;
break;
}
i++;
}
if(SUCCEEDED(hres)) {
if(push_instr(ctx, OP_pop)) {
default_jmp = push_instr(ctx, OP_jmp);
if(!default_jmp)
hres = E_OUTOFMEMORY;
}else {
hres = E_OUTOFMEMORY;
}
}
if(FAILED(hres)) {
heap_free(case_jmps);
return hres;
}
i = 0;
for(iter = stat->case_list; iter; iter = iter->next) {
while(iter->next && iter->next->stat == iter->stat) {
set_arg_uint(ctx, iter->expr ? case_jmps[i++] : default_jmp, ctx->code_off);
iter = iter->next;
}
set_arg_uint(ctx, iter->expr ? case_jmps[i++] : default_jmp, ctx->code_off);
if(iter->stat) {
for(stat_iter = iter->stat; stat_iter && (!iter->next || iter->next->stat != stat_iter);
stat_iter = stat_iter->next) {
hres = compile_statement(ctx, &stat_ctx, stat_iter);
if(FAILED(hres))
break;
if(stat_iter->next && !push_instr(ctx, OP_pop)) {
hres = E_OUTOFMEMORY;
break;
}
}
if(FAILED(hres))
break;
}else {
if(!push_instr(ctx, OP_undefined)) {
hres = E_OUTOFMEMORY;
break;
}
}
}
heap_free(case_jmps);
if(FAILED(hres))
return hres;
assert(i == case_cnt);
if(!have_default) {
hres = push_instr_uint(ctx, OP_jmp, stat_ctx.break_label);
if(FAILED(hres))
return hres;
set_arg_uint(ctx, default_jmp, ctx->code_off);
if(!push_instr(ctx, OP_undefined))
return E_OUTOFMEMORY;
}
label_set_addr(ctx, stat_ctx.break_label);
return S_OK;
}
/* ECMA-262 3rd Edition 12.13 */
static HRESULT compile_throw_statement(compiler_ctx_t *ctx, expression_statement_t *stat)
{
HRESULT hres;
hres = compile_expression(ctx, stat->expr);
if(FAILED(hres))
return hres;
return push_instr(ctx, OP_throw) ? S_OK : E_OUTOFMEMORY;
}
/* ECMA-262 3rd Edition 12.14 */
static HRESULT compile_try_statement(compiler_ctx_t *ctx, try_statement_t *stat)
{
statement_ctx_t try_ctx = {0, FALSE, TRUE}, catch_ctx = {0, TRUE, FALSE};
statement_ctx_t finally_ctx = {2, FALSE, FALSE};
unsigned push_except;
BSTR ident;
HRESULT hres;
push_except = push_instr(ctx, OP_push_except);
if(!push_except)
return E_OUTOFMEMORY;
if(stat->catch_block) {
ident = compiler_alloc_bstr(ctx, stat->catch_block->identifier);
if(!ident)
return E_OUTOFMEMORY;
}else {
ident = NULL;
}
instr_ptr(ctx, push_except)->u.arg[1].bstr = ident;
if(!stat->catch_block)
try_ctx.stack_use = 2;
hres = compile_statement(ctx, &try_ctx, stat->try_statement);
if(FAILED(hres))
return hres;
if(!push_instr(ctx, OP_pop_except))
return E_OUTOFMEMORY;
if(stat->catch_block) {
unsigned jmp_finally;
jmp_finally = push_instr(ctx, OP_jmp);
if(!jmp_finally)
return E_OUTOFMEMORY;
instr_ptr(ctx, push_except)->u.arg[0].uint = ctx->code_off;
hres = compile_statement(ctx, &catch_ctx, stat->catch_block->statement);
if(FAILED(hres))
return hres;
if(!push_instr(ctx, OP_pop_scope))
return E_OUTOFMEMORY;
set_arg_uint(ctx, jmp_finally, ctx->code_off);
}else {
set_arg_uint(ctx, push_except, ctx->code_off);
}
if(stat->finally_statement) {
/* FIXME: avoid */
if(!push_instr(ctx, OP_pop))
return E_OUTOFMEMORY;
hres = compile_statement(ctx, stat->catch_block ? NULL : &finally_ctx, stat->finally_statement);
if(FAILED(hres))
return hres;
if(!stat->catch_block && !push_instr(ctx, OP_end_finally))
return E_OUTOFMEMORY;
}
return S_OK;
}
static HRESULT compile_statement(compiler_ctx_t *ctx, statement_ctx_t *stat_ctx, statement_t *stat)
{
HRESULT hres;
if(stat_ctx) {
stat_ctx->next = ctx->stat_ctx;
ctx->stat_ctx = stat_ctx;
}
switch(stat->type) {
case STAT_BLOCK:
hres = compile_block_statement(ctx, ((block_statement_t*)stat)->stat_list);
break;
case STAT_BREAK:
hres = compile_break_statement(ctx, (branch_statement_t*)stat);
break;
case STAT_CONTINUE:
hres = compile_continue_statement(ctx, (branch_statement_t*)stat);
break;
case STAT_EMPTY:
hres = push_instr(ctx, OP_undefined) ? S_OK : E_OUTOFMEMORY; /* FIXME */
break;
case STAT_EXPR:
hres = compile_expression_statement(ctx, (expression_statement_t*)stat);
break;
case STAT_FOR:
hres = compile_for_statement(ctx, (for_statement_t*)stat);
break;
case STAT_FORIN:
hres = compile_forin_statement(ctx, (forin_statement_t*)stat);
break;
case STAT_IF:
hres = compile_if_statement(ctx, (if_statement_t*)stat);
break;
case STAT_LABEL:
hres = compile_labelled_statement(ctx, (labelled_statement_t*)stat);
break;
case STAT_RETURN:
hres = compile_return_statement(ctx, (expression_statement_t*)stat);
break;
case STAT_SWITCH:
hres = compile_switch_statement(ctx, (switch_statement_t*)stat);
break;
case STAT_THROW:
hres = compile_throw_statement(ctx, (expression_statement_t*)stat);
break;
case STAT_TRY:
hres = compile_try_statement(ctx, (try_statement_t*)stat);
break;
case STAT_VAR:
hres = compile_var_statement(ctx, (var_statement_t*)stat);
break;
case STAT_WHILE:
hres = compile_while_statement(ctx, (while_statement_t*)stat);
break;
case STAT_WITH:
hres = compile_with_statement(ctx, (with_statement_t*)stat);
break;
default:
assert(0);
hres = E_FAIL;
}
if(stat_ctx) {
assert(ctx->stat_ctx == stat_ctx);
ctx->stat_ctx = stat_ctx->next;
}
return hres;
}
static void resolve_labels(compiler_ctx_t *ctx, unsigned off)
{
instr_t *instr;
for(instr = ctx->code->instrs+off; instr < ctx->code->instrs+ctx->code_off; instr++) {
if(instr_info[instr->op].arg1_type == ARG_ADDR && (instr->u.arg->uint & LABEL_FLAG)) {
assert((instr->u.arg->uint & ~LABEL_FLAG) < ctx->labels_cnt);
instr->u.arg->uint = ctx->labels[instr->u.arg->uint & ~LABEL_FLAG];
}
assert(instr_info[instr->op].arg2_type != ARG_ADDR);
}
ctx->labels_cnt = 0;
}
void release_bytecode(bytecode_t *code)
{
unsigned i;
if(--code->ref)
return;
for(i=0; i < code->bstr_cnt; i++)
SysFreeString(code->bstr_pool[i]);
for(i=0; i < code->str_cnt; i++)
jsstr_release(code->str_pool[i]);
heap_free(code->source);
jsheap_free(&code->heap);
heap_free(code->bstr_pool);
heap_free(code->str_pool);
heap_free(code->instrs);
heap_free(code);
}
static HRESULT init_code(compiler_ctx_t *compiler, const WCHAR *source)
{
compiler->code = heap_alloc_zero(sizeof(bytecode_t));
if(!compiler->code)
return E_OUTOFMEMORY;
compiler->code->ref = 1;
jsheap_init(&compiler->code->heap);
compiler->code->source = heap_strdupW(source);
if(!compiler->code->source) {
release_bytecode(compiler->code);
return E_OUTOFMEMORY;
}
compiler->code->instrs = heap_alloc(64 * sizeof(instr_t));
if(!compiler->code->instrs) {
release_bytecode(compiler->code);
return E_OUTOFMEMORY;
}
compiler->code_size = 64;
compiler->code_off = 1;
return S_OK;
}
static HRESULT compile_function(compiler_ctx_t *ctx, source_elements_t *source, function_expression_t *func_expr,
BOOL from_eval, function_code_t *func)
{
variable_declaration_t *var_iter;
function_expression_t *iter;
unsigned off, i;
HRESULT hres;
TRACE("\n");
ctx->var_head = ctx->var_tail = NULL;
ctx->func_head = ctx->func_tail = NULL;
off = ctx->code_off;
ctx->func = func;
hres = compile_block_statement(ctx, source->statement);
if(FAILED(hres))
return hres;
resolve_labels(ctx, off);
if(!from_eval && !push_instr(ctx, OP_pop))
return E_OUTOFMEMORY;
if(!push_instr(ctx, OP_ret))
return E_OUTOFMEMORY;
if(TRACE_ON(jscript_disas))
dump_code(ctx, off);
func->instr_off = off;
if(func_expr && func_expr->identifier) {
func->name = compiler_alloc_bstr(ctx, func_expr->identifier);
if(!func->name)
return E_OUTOFMEMORY;
}
if(func_expr) {
parameter_t *param_iter;
func->source = func_expr->src_str;
func->source_len = func_expr->src_len;
for(param_iter = func_expr->parameter_list; param_iter; param_iter = param_iter->next)
func->param_cnt++;
func->params = compiler_alloc(ctx->code, func->param_cnt * sizeof(*func->params));
if(!func->params)
return E_OUTOFMEMORY;
for(param_iter = func_expr->parameter_list, i=0; param_iter; param_iter = param_iter->next, i++) {
func->params[i] = compiler_alloc_bstr(ctx, param_iter->identifier);
if(!func->params[i])
return E_OUTOFMEMORY;
}
}
func->variables = compiler_alloc(ctx->code, func->var_cnt * sizeof(*func->variables));
if(!func->variables)
return E_OUTOFMEMORY;
for(var_iter = ctx->var_head, i=0; var_iter; var_iter = var_iter->global_next, i++) {
func->variables[i] = compiler_alloc_bstr(ctx, var_iter->identifier);
if(!func->variables[i])
return E_OUTOFMEMORY;
}
assert(i == func->var_cnt);
func->funcs = compiler_alloc(ctx->code, func->func_cnt * sizeof(*func->funcs));
if(!func->funcs)
return E_OUTOFMEMORY;
memset(func->funcs, 0, func->func_cnt * sizeof(*func->funcs));
for(iter = ctx->func_head, i=0; iter; iter = iter->next, i++) {
hres = compile_function(ctx, iter->source_elements, iter, FALSE, func->funcs+i);
if(FAILED(hres))
return hres;
}
assert(i == func->func_cnt);
return S_OK;
}
static HRESULT parse_arguments(compiler_ctx_t *ctx, const WCHAR *args, BSTR *arg_array, unsigned *args_size)
{
const WCHAR *ptr = args, *ptr2;
unsigned arg_cnt = 0;
while(isspaceW(*ptr))
ptr++;
if(!*ptr) {
if(args_size)
*args_size = 0;
return S_OK;
}
while(1) {
if(!isalphaW(*ptr) && *ptr != '_') {
FIXME("expected alpha or '_': %s\n", debugstr_w(ptr));
return E_FAIL;
}
ptr2 = ptr;
while(isalnumW(*ptr) || *ptr == '_')
ptr++;
if(*ptr && *ptr != ',' && !isspaceW(*ptr)) {
FIXME("unexpected har %s\n", debugstr_w(ptr));
return E_FAIL;
}
if(arg_array) {
arg_array[arg_cnt] = compiler_alloc_bstr_len(ctx, ptr2, ptr-ptr2);
if(!arg_array[arg_cnt])
return E_OUTOFMEMORY;
}
arg_cnt++;
while(isspaceW(*ptr))
ptr++;
if(!*ptr)
break;
if(*ptr != ',') {
FIXME("expected ',': %s\n", debugstr_w(ptr));
return E_FAIL;
}
ptr++;
while(isspaceW(*ptr))
ptr++;
}
if(args_size)
*args_size = arg_cnt;
return S_OK;
}
static HRESULT compile_arguments(compiler_ctx_t *ctx, const WCHAR *args)
{
HRESULT hres;
hres = parse_arguments(ctx, args, NULL, &ctx->code->global_code.param_cnt);
if(FAILED(hres))
return hres;
ctx->code->global_code.params = compiler_alloc(ctx->code,
ctx->code->global_code.param_cnt * sizeof(*ctx->code->global_code.params));
if(!ctx->code->global_code.params)
return E_OUTOFMEMORY;
return parse_arguments(ctx, args, ctx->code->global_code.params, NULL);
}
HRESULT compile_script(script_ctx_t *ctx, const WCHAR *code, const WCHAR *args, const WCHAR *delimiter,
BOOL from_eval, BOOL use_decode, bytecode_t **ret)
{
compiler_ctx_t compiler = {0};
HRESULT hres;
hres = init_code(&compiler, code);
if(FAILED(hres))
return hres;
if(args) {
hres = compile_arguments(&compiler, args);
if(FAILED(hres))
return hres;
}
if(use_decode) {
hres = decode_source(compiler.code->source);
if(FAILED(hres)) {
WARN("Decoding failed\n");
return hres;
}
}
hres = script_parse(ctx, compiler.code->source, delimiter, from_eval, &compiler.parser);
if(FAILED(hres)) {
release_bytecode(compiler.code);
return hres;
}
hres = compile_function(&compiler, compiler.parser->source, NULL, from_eval, &compiler.code->global_code);
parser_release(compiler.parser);
if(FAILED(hres)) {
release_bytecode(compiler.code);
return hres;
}
*ret = compiler.code;
return S_OK;
}
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