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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);
struct _compiler_ctx_t {
parser_ctx_t *parser;
bytecode_t *code;
unsigned code_off;
unsigned code_size;
BOOL no_fallback;
};
static HRESULT compile_expression(compiler_ctx_t*,expression_t*);
static HRESULT compile_statement(compiler_ctx_t*,statement_t*);
static inline void *compiler_alloc(bytecode_t *code, size_t size)
{
return jsheap_alloc(&code->heap, size);
}
static WCHAR *compiler_alloc_string(bytecode_t *code, const WCHAR *str)
{
size_t size;
WCHAR *ret;
size = (strlenW(str)+1)*sizeof(WCHAR);
ret = compiler_alloc(code, size);
if(ret)
memcpy(ret, str, size);
return ret;
}
static BSTR compiler_alloc_bstr(compiler_ctx_t *ctx, const WCHAR *str)
{
if(!ctx->code->bstr_pool_size) {
ctx->code->bstr_pool = heap_alloc(8 * sizeof(BSTR));
if(!ctx->code->bstr_pool)
return NULL;
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 NULL;
ctx->code->bstr_pool = new_pool;
ctx->code->bstr_pool_size *= 2;
}
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 unsigned push_instr(compiler_ctx_t *ctx, jsop_t op)
{
assert(ctx->code_size >= ctx->code_off);
if(!ctx->code_size) {
ctx->code->instrs = heap_alloc(64 * sizeof(instr_t));
if(!ctx->code->instrs)
return -1;
ctx->code_size = 64;
}else 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 -1;
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 == -1)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->arg1.lng = arg;
return S_OK;
}
static HRESULT push_instr_str(compiler_ctx_t *ctx, jsop_t op, const WCHAR *arg)
{
unsigned instr;
WCHAR *str;
str = compiler_alloc_string(ctx->code, arg);
if(!str)
return E_OUTOFMEMORY;
instr = push_instr(ctx, op);
if(instr == -1)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->arg1.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 == -1)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->arg1.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 == -1)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->arg1.bstr = str;
instr_ptr(ctx, instr)->arg2.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;
WCHAR *str;
str = compiler_alloc_string(ctx->code, arg2);
if(!str)
return E_OUTOFMEMORY;
instr = push_instr(ctx, op);
if(instr == -1)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->arg1.uint = arg1;
instr_ptr(ctx, instr)->arg2.str = str;
return S_OK;
}
static HRESULT push_instr_double(compiler_ctx_t *ctx, jsop_t op, double arg)
{
unsigned instr;
DOUBLE *dbl;
dbl = compiler_alloc(ctx->code, sizeof(arg));
if(!dbl)
return E_OUTOFMEMORY;
*dbl = arg;
instr = push_instr(ctx, op);
if(instr == -1)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->arg1.dbl = dbl;
return S_OK;
}
static HRESULT push_instr_uint(compiler_ctx_t *ctx, jsop_t op, unsigned arg)
{
unsigned instr;
instr = push_instr(ctx, op);
if(instr == -1)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->arg1.uint = 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) == -1 ? E_OUTOFMEMORY : S_OK;
}
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) == -1 ? E_OUTOFMEMORY : S_OK;
}
/* 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);
}
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, 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) == -1)
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 == -1)
return E_OUTOFMEMORY;
hres = compile_expression(ctx, expr->expression2);
if(FAILED(hres))
return hres;
instr_ptr(ctx, instr)->arg1.uint = 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 == -1)
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 == -1)
return E_OUTOFMEMORY;
instr_ptr(ctx, jmp_false)->arg1.uint = ctx->code_off;
if(push_instr(ctx, OP_pop) == -1)
return E_OUTOFMEMORY;
hres = compile_expression(ctx, expr->false_expression);
if(FAILED(hres))
return hres;
instr_ptr(ctx, jmp_end)->arg1.uint = 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_int(ctx, OP_new, arg_cnt);
}
static HRESULT compile_interp_fallback(compiler_ctx_t *ctx, statement_t *stat)
{
unsigned instr;
if(ctx->no_fallback)
return E_NOTIMPL;
instr = push_instr(ctx, OP_tree);
if(instr == -1)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->arg1.stat = stat;
return S_OK;
}
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 == -1)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->arg1.uint = arg_cnt;
instr_ptr(ctx, instr)->arg2.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) == -1)
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) == -1)
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)
{
HRESULT hres;
if(!is_memberid_expr(expr->expression1->type)) {
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) == -1)
return E_OUTOFMEMORY;
return push_instr_uint(ctx, OP_throw, JS_E_ILLEGAL_ASSIGN);
}
hres = compile_memberid_expression(ctx, expr->expression1, fdexNameEnsure);
if(FAILED(hres))
return hres;
if(op != OP_LAST && push_instr(ctx, OP_refval) == -1)
return E_OUTOFMEMORY;
hres = compile_expression(ctx, expr->expression2);
if(FAILED(hres))
return hres;
if(op != OP_LAST && push_instr(ctx, op) == -1)
return E_OUTOFMEMORY;
if(push_instr(ctx, OP_assign) == -1)
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_str(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) == -1 ? E_OUTOFMEMORY : S_OK;
}
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_INT:
return push_instr_int(ctx, OP_int, literal->u.lval);
case LT_NULL:
return push_instr(ctx, OP_null);
case LT_STRING:
return push_instr_str(ctx, OP_str, literal->u.wstr);
case LT_REGEXP: {
unsigned instr;
WCHAR *str;
str = compiler_alloc(ctx->code, (literal->u.regexp.str_len+1)*sizeof(WCHAR));
if(!str)
return E_OUTOFMEMORY;
memcpy(str, literal->u.regexp.str, literal->u.regexp.str_len*sizeof(WCHAR));
str[literal->u.regexp.str_len] = 0;
instr = push_instr(ctx, OP_regexp);
if(instr == -1)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->arg1.str = str;
instr_ptr(ctx, instr)->arg2.lng = literal->u.regexp.flags;
return S_OK;
}
default:
assert(0);
}
}
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_INT:
*str = int_to_bstr(literal->u.lval);
break;
case LT_DOUBLE:
return double_to_bstr(literal->u.dval, str);
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) == -1)
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) == -1)
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) == -1)
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 == -1)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->arg1.bstr = name;
}
return S_OK;
}
static HRESULT compile_function_expression(compiler_ctx_t *ctx, function_expression_t *expr)
{
unsigned instr;
/* FIXME: not exactly right */
if(expr->identifier)
return push_instr_bstr(ctx, OP_ident, expr->identifier);
instr = push_instr(ctx, OP_func);
if(instr == -1)
return E_OUTOFMEMORY;
instr_ptr(ctx, instr)->arg1.func = expr;
return S_OK;
}
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) == -1 ? E_OUTOFMEMORY : S_OK;
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);
}
/* 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) == -1 ? E_OUTOFMEMORY : S_OK;
while(1) {
hres = compile_statement(ctx, iter);
if(FAILED(hres))
return hres;
iter = iter->next;
if(!iter)
break;
if(push_instr(ctx, OP_pop) == -1)
return E_OUTOFMEMORY;
}
return S_OK;
}
/* ECMA-262 3rd Edition 12.2 */
static HRESULT compile_var_statement(compiler_ctx_t *ctx, var_statement_t *stat)
{
variable_declaration_t *iter;
HRESULT hres;
for(iter = stat->variable_list; iter; iter = iter->next) {
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 push_instr(ctx, OP_undefined) == -1 ? E_OUTOFMEMORY : S_OK;
}
/* 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) == -1)
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 == -1)
return E_OUTOFMEMORY;
hres = compile_statement(ctx, stat->if_stat);
if(FAILED(hres))
return hres;
jmp_end = push_instr(ctx, OP_jmp);
if(jmp_end == -1)
return E_OUTOFMEMORY;
instr_ptr(ctx, jmp_else)->arg1.uint = ctx->code_off;
if(stat->else_stat) {
hres = compile_statement(ctx, stat->else_stat);
if(FAILED(hres))
return hres;
}else {
/* FIXME: We could sometimes avoid it */
if(push_instr(ctx, OP_undefined) == -1)
return E_OUTOFMEMORY;
}
instr_ptr(ctx, jmp_end)->arg1.uint = 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)
{
unsigned off_backup, jmp_off, jmp = -1;
BOOL prev_no_fallback;
HRESULT hres;
off_backup = ctx->code_off;
if(!stat->do_while) {
/* FIXME: avoid */
if(push_instr(ctx, OP_undefined) == -1)
return E_OUTOFMEMORY;
jmp_off = ctx->code_off;
hres = compile_expression(ctx, stat->expr);
if(FAILED(hres))
return hres;
jmp = push_instr(ctx, OP_jmp_z);
if(jmp == -1)
return E_OUTOFMEMORY;
if(push_instr(ctx, OP_pop) == -1)
return E_OUTOFMEMORY;
}else {
jmp_off = ctx->code_off;
}
prev_no_fallback = ctx->no_fallback;
ctx->no_fallback = TRUE;
hres = compile_statement(ctx, stat->statement);
ctx->no_fallback = prev_no_fallback;
if(hres == E_NOTIMPL) {
ctx->code_off = off_backup;
stat->stat.eval = while_statement_eval;
return compile_interp_fallback(ctx, &stat->stat);
}
if(FAILED(hres))
return hres;
if(stat->do_while) {
hres = compile_expression(ctx, stat->expr);
if(FAILED(hres))
return hres;
jmp = push_instr(ctx, OP_jmp_z);
if(jmp == -1)
return E_OUTOFMEMORY;
if(push_instr(ctx, OP_pop) == -1)
return E_OUTOFMEMORY;
}
hres = push_instr_uint(ctx, OP_jmp, jmp_off);
if(FAILED(hres))
return hres;
instr_ptr(ctx, jmp)->arg1.uint = ctx->code_off;
return S_OK;
}
static HRESULT compile_statement(compiler_ctx_t *ctx, statement_t *stat)
{
switch(stat->type) {
case STAT_BLOCK:
return compile_block_statement(ctx, ((block_statement_t*)stat)->stat_list);
case STAT_EMPTY:
return push_instr(ctx, OP_undefined) == -1 ? E_OUTOFMEMORY : S_OK; /* FIXME */
case STAT_EXPR:
return compile_expression_statement(ctx, (expression_statement_t*)stat);
case STAT_IF:
return compile_if_statement(ctx, (if_statement_t*)stat);
case STAT_VAR:
return compile_var_statement(ctx, (var_statement_t*)stat);
case STAT_WHILE:
return compile_while_statement(ctx, (while_statement_t*)stat);
default:
return compile_interp_fallback(ctx, stat);
}
}
void release_bytecode(bytecode_t *code)
{
unsigned i;
for(i=0; i < code->bstr_cnt; i++)
SysFreeString(code->bstr_pool[i]);
jsheap_free(&code->heap);
heap_free(code->bstr_pool);
heap_free(code->instrs);
heap_free(code);
}
void release_compiler(compiler_ctx_t *ctx)
{
heap_free(ctx);
}
static HRESULT init_compiler(parser_ctx_t *parser)
{
if(!parser->code) {
parser->code = heap_alloc_zero(sizeof(bytecode_t));
if(!parser->code)
return E_OUTOFMEMORY;
jsheap_init(&parser->code->heap);
}
if(!parser->compiler) {
parser->compiler = heap_alloc_zero(sizeof(compiler_ctx_t));
if(!parser->compiler)
return E_OUTOFMEMORY;
parser->compiler->parser = parser;
parser->compiler->code = parser->code;
}
return S_OK;
}
HRESULT compile_subscript(parser_ctx_t *parser, expression_t *expr, unsigned *ret_off)
{
HRESULT hres;
hres = init_compiler(parser);
if(FAILED(hres))
return hres;
*ret_off = parser->compiler->code_off;
hres = compile_expression(parser->compiler, expr);
if(FAILED(hres))
return hres;
return push_instr(parser->compiler, OP_ret) == -1 ? E_OUTOFMEMORY : S_OK;
}
HRESULT compile_subscript_stat(parser_ctx_t *parser, statement_t *stat, BOOL compile_block, unsigned *ret_off)
{
HRESULT hres;
TRACE("\n");
hres = init_compiler(parser);
if(FAILED(hres))
return hres;
*ret_off = parser->compiler->code_off;
if(compile_block && stat->next)
hres = compile_block_statement(parser->compiler, stat);
else
hres = compile_statement(parser->compiler, stat);
if(FAILED(hres))
return hres;
return push_instr(parser->compiler, OP_ret) == -1 ? E_OUTOFMEMORY : S_OK;
}
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