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jscript: Added bytecode version of for loop statement.

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Jacek Caban 2011-12-27 11:16:13 +01:00 committed by Alexandre Julliard
parent f5425aeeca
commit 17fedc448b
2 changed files with 93 additions and 3 deletions
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94
dlls/jscript/compile.c
View File

@ -872,12 +872,12 @@ static HRESULT compile_block_statement(compiler_ctx_t *ctx, statement_t *iter)
}
/* ECMA-262 3rd Edition 12.2 */
static HRESULT compile_var_statement(compiler_ctx_t *ctx, var_statement_t *stat)
static HRESULT compile_variable_list(compiler_ctx_t *ctx, variable_declaration_t *list)
{
variable_declaration_t *iter;
HRESULT hres;
for(iter = stat->variable_list; iter; iter = iter->next) {
for(iter = list; iter; iter = iter->next) {
if(!iter->expr)
continue;
@ -890,6 +890,18 @@ static HRESULT compile_var_statement(compiler_ctx_t *ctx, var_statement_t *stat)
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) == -1 ? E_OUTOFMEMORY : S_OK;
}
@ -1009,6 +1021,82 @@ static HRESULT compile_while_statement(compiler_ctx_t *ctx, while_statement_t *s
return S_OK;
}
/* ECMA-262 3rd Edition 12.6.3 */
static HRESULT compile_for_statement(compiler_ctx_t *ctx, for_statement_t *stat)
{
unsigned off_backup, jmp, expr_off;
BOOL prev_no_fallback;
HRESULT hres;
off_backup = ctx->code_off;
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) == -1)
return E_OUTOFMEMORY;
}
/* FIXME: avoid */
if(push_instr(ctx, OP_undefined) == -1)
return E_OUTOFMEMORY;
expr_off = ctx->code_off;
if(stat->expr) {
hres = compile_expression(ctx, stat->expr);
if(FAILED(hres))
return hres;
jmp = push_instr(ctx, OP_jmp_z);
if(jmp == -1)
return E_OUTOFMEMORY;
}else {
jmp = -1;
}
if(push_instr(ctx, OP_pop) == -1)
return E_OUTOFMEMORY;
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 = for_statement_eval;
return compile_interp_fallback(ctx, &stat->stat);
}
if(FAILED(hres))
return hres;
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) == -1)
return E_OUTOFMEMORY;
}
hres = push_instr_uint(ctx, OP_jmp, expr_off);
if(FAILED(hres))
return hres;
if(jmp != -1)
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) {
@ -1018,6 +1106,8 @@ static HRESULT compile_statement(compiler_ctx_t *ctx, statement_t *stat)
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_FOR:
return compile_for_statement(ctx, (for_statement_t*)stat);
case STAT_IF:
return compile_if_statement(ctx, (if_statement_t*)stat);
case STAT_VAR:

2
dlls/jscript/parser.y
View File

@ -841,7 +841,7 @@ static const statement_eval_t stat_eval_table[] = {
continue_statement_eval,
compiled_statement_eval,
compiled_statement_eval,
for_statement_eval,
compiled_statement_eval,
forin_statement_eval,
compiled_statement_eval,
labelled_statement_eval,