2 * Copyright 2011 Jacek Caban for CodeWeavers
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
25 #include "wine/debug.h"
27 WINE_DEFAULT_DEBUG_CHANNEL(jscript);
29 struct _compiler_ctx_t {
37 static HRESULT compile_expression(compiler_ctx_t*,expression_t*);
39 static inline void *compiler_alloc(bytecode_t *code, size_t size)
41 return jsheap_alloc(&code->heap, size);
44 static WCHAR *compiler_alloc_string(bytecode_t *code, const WCHAR *str)
49 size = (strlenW(str)+1)*sizeof(WCHAR);
50 ret = compiler_alloc(code, size);
52 memcpy(ret, str, size);
56 static BSTR compiler_alloc_bstr(compiler_ctx_t *ctx, const WCHAR *str)
58 if(!ctx->code->bstr_pool_size) {
59 ctx->code->bstr_pool = heap_alloc(8 * sizeof(BSTR));
60 if(!ctx->code->bstr_pool)
62 ctx->code->bstr_pool_size = 8;
63 }else if(ctx->code->bstr_pool_size == ctx->code->bstr_cnt) {
66 new_pool = heap_realloc(ctx->code->bstr_pool, ctx->code->bstr_pool_size*2*sizeof(BSTR));
70 ctx->code->bstr_pool = new_pool;
71 ctx->code->bstr_pool_size *= 2;
74 ctx->code->bstr_pool[ctx->code->bstr_cnt] = SysAllocString(str);
75 if(!ctx->code->bstr_pool[ctx->code->bstr_cnt])
78 return ctx->code->bstr_pool[ctx->code->bstr_cnt++];
81 static unsigned push_instr(compiler_ctx_t *ctx, jsop_t op)
83 assert(ctx->code_size >= ctx->code_off);
86 ctx->code->instrs = heap_alloc(64 * sizeof(instr_t));
87 if(!ctx->code->instrs)
90 }else if(ctx->code_size == ctx->code_off) {
93 new_instrs = heap_realloc(ctx->code->instrs, ctx->code_size*2*sizeof(instr_t));
97 ctx->code->instrs = new_instrs;
101 ctx->code->instrs[ctx->code_off].op = op;
102 return ctx->code_off++;
105 static inline instr_t *instr_ptr(compiler_ctx_t *ctx, unsigned off)
107 assert(off < ctx->code_off);
108 return ctx->code->instrs + off;
111 static HRESULT push_instr_int(compiler_ctx_t *ctx, jsop_t op, LONG arg)
115 instr = push_instr(ctx, op);
117 return E_OUTOFMEMORY;
119 instr_ptr(ctx, instr)->arg1.lng = arg;
123 static HRESULT push_instr_str(compiler_ctx_t *ctx, jsop_t op, const WCHAR *arg)
128 str = compiler_alloc_string(ctx->code, arg);
130 return E_OUTOFMEMORY;
132 instr = push_instr(ctx, op);
134 return E_OUTOFMEMORY;
136 instr_ptr(ctx, instr)->arg1.str = str;
140 static HRESULT push_instr_bstr(compiler_ctx_t *ctx, jsop_t op, const WCHAR *arg)
145 str = compiler_alloc_bstr(ctx, arg);
147 return E_OUTOFMEMORY;
149 instr = push_instr(ctx, op);
151 return E_OUTOFMEMORY;
153 instr_ptr(ctx, instr)->arg1.bstr = str;
157 static HRESULT push_instr_double(compiler_ctx_t *ctx, jsop_t op, double arg)
162 dbl = compiler_alloc(ctx->code, sizeof(arg));
164 return E_OUTOFMEMORY;
167 instr = push_instr(ctx, op);
169 return E_OUTOFMEMORY;
171 instr_ptr(ctx, instr)->arg1.dbl = dbl;
175 static HRESULT push_instr_uint(compiler_ctx_t *ctx, jsop_t op, unsigned arg)
179 instr = push_instr(ctx, op);
181 return E_OUTOFMEMORY;
183 instr_ptr(ctx, instr)->arg1.uint = arg;
187 static HRESULT compile_binary_expression(compiler_ctx_t *ctx, binary_expression_t *expr, jsop_t op)
191 hres = compile_expression(ctx, expr->expression1);
195 hres = compile_expression(ctx, expr->expression2);
199 return push_instr(ctx, op) == -1 ? E_OUTOFMEMORY : S_OK;
202 static HRESULT compile_unary_expression(compiler_ctx_t *ctx, unary_expression_t *expr, jsop_t op)
206 hres = compile_expression(ctx, expr->expression);
210 return push_instr(ctx, op) == -1 ? E_OUTOFMEMORY : S_OK;
213 /* ECMA-262 3rd Edition 11.2.1 */
214 static HRESULT compile_member_expression(compiler_ctx_t *ctx, member_expression_t *expr)
218 hres = compile_expression(ctx, expr->expression);
222 return push_instr_bstr(ctx, OP_member, expr->identifier);
225 /* ECMA-262 3rd Edition 11.14 */
226 static HRESULT compile_comma_expression(compiler_ctx_t *ctx, binary_expression_t *expr)
230 hres = compile_expression(ctx, expr->expression1);
234 if(push_instr(ctx, OP_pop) == -1)
235 return E_OUTOFMEMORY;
237 return compile_expression(ctx, expr->expression2);
240 /* ECMA-262 3rd Edition 11.11 */
241 static HRESULT compile_logical_expression(compiler_ctx_t *ctx, binary_expression_t *expr, jsop_t op)
246 hres = compile_expression(ctx, expr->expression1);
250 instr = push_instr(ctx, op);
252 return E_OUTOFMEMORY;
254 hres = compile_expression(ctx, expr->expression2);
258 instr_ptr(ctx, instr)->arg1.uint = ctx->code_off;
262 /* ECMA-262 3rd Edition 11.12 */
263 static HRESULT compile_conditional_expression(compiler_ctx_t *ctx, conditional_expression_t *expr)
265 unsigned jmp_false, jmp_end;
268 hres = compile_expression(ctx, expr->expression);
272 jmp_false = push_instr(ctx, OP_jmp_z);
274 return E_OUTOFMEMORY;
276 hres = compile_expression(ctx, expr->true_expression);
280 jmp_end = push_instr(ctx, OP_jmp);
282 return E_OUTOFMEMORY;
284 instr_ptr(ctx, jmp_false)->arg1.uint = ctx->code_off;
285 if(push_instr(ctx, OP_pop) == -1)
286 return E_OUTOFMEMORY;
288 hres = compile_expression(ctx, expr->false_expression);
292 instr_ptr(ctx, jmp_end)->arg1.uint = ctx->code_off;
296 static HRESULT compile_new_expression(compiler_ctx_t *ctx, call_expression_t *expr)
298 unsigned arg_cnt = 0;
302 hres = compile_expression(ctx, expr->expression);
306 for(arg = expr->argument_list; arg; arg = arg->next) {
307 hres = compile_expression(ctx, arg->expr);
313 return push_instr_int(ctx, OP_new, arg_cnt);
316 static HRESULT compile_interp_fallback(compiler_ctx_t *ctx, expression_t *expr)
320 instr = push_instr(ctx, OP_tree);
322 return E_OUTOFMEMORY;
324 instr_ptr(ctx, instr)->arg1.expr = expr;
328 static HRESULT compile_delete_expression(compiler_ctx_t *ctx, unary_expression_t *expr)
332 switch(expr->expression->type) {
334 array_expression_t *array_expr = (array_expression_t*)expr->expression;
336 hres = compile_expression(ctx, array_expr->member_expr);
340 hres = compile_expression(ctx, array_expr->expression);
344 if(push_instr(ctx, OP_delete) == -1)
345 return E_OUTOFMEMORY;
349 member_expression_t *member_expr = (member_expression_t*)expr->expression;
351 hres = compile_expression(ctx, member_expr->expression);
355 /* FIXME: Potential optimization */
356 hres = push_instr_str(ctx, OP_str, member_expr->identifier);
360 if(push_instr(ctx, OP_delete) == -1)
361 return E_OUTOFMEMORY;
365 expr->expr.eval = delete_expression_eval;
366 return compile_interp_fallback(ctx, &expr->expr);
372 static HRESULT compile_assign_expression(compiler_ctx_t *ctx, binary_expression_t *expr, jsop_t op)
376 switch(expr->expression1->type) {
378 identifier_expression_t *ident_expr = (identifier_expression_t*)expr->expression1;
380 hres = push_instr_bstr(ctx, OP_identid, ident_expr->identifier);
386 array_expression_t *array_expr = (array_expression_t*)expr->expression1;
388 hres = compile_expression(ctx, array_expr->member_expr);
392 hres = compile_expression(ctx, array_expr->expression);
396 if(push_instr(ctx, OP_memberid) == -1)
397 return E_OUTOFMEMORY;
401 member_expression_t *member_expr = (member_expression_t*)expr->expression1;
403 hres = compile_expression(ctx, member_expr->expression);
407 /* FIXME: Potential optimization */
408 hres = push_instr_str(ctx, OP_str, member_expr->identifier);
412 if(push_instr(ctx, OP_memberid) == -1)
413 return E_OUTOFMEMORY;
417 hres = compile_expression(ctx, expr->expression1);
421 hres = compile_expression(ctx, expr->expression2);
425 if(op != OP_LAST && push_instr(ctx, op) == -1)
426 return E_OUTOFMEMORY;
428 return push_instr_uint(ctx, OP_throw, JS_E_ILLEGAL_ASSIGN);
431 if(op != OP_LAST && push_instr(ctx, OP_refval) == -1)
432 return E_OUTOFMEMORY;
434 hres = compile_expression(ctx, expr->expression2);
438 if(op != OP_LAST && push_instr(ctx, op) == -1)
439 return E_OUTOFMEMORY;
441 if(push_instr(ctx, OP_assign) == -1)
442 return E_OUTOFMEMORY;
447 static HRESULT compile_literal(compiler_ctx_t *ctx, literal_t *literal)
449 switch(literal->type) {
451 return push_instr_int(ctx, OP_bool, literal->u.bval);
453 return push_instr_double(ctx, OP_double, literal->u.dval);
455 return push_instr_int(ctx, OP_int, literal->u.lval);
457 return push_instr(ctx, OP_null);
459 return push_instr_str(ctx, OP_str, literal->u.wstr);
464 str = compiler_alloc(ctx->code, (literal->u.regexp.str_len+1)*sizeof(WCHAR));
466 return E_OUTOFMEMORY;
467 memcpy(str, literal->u.regexp.str, literal->u.regexp.str_len*sizeof(WCHAR));
468 str[literal->u.regexp.str_len] = 0;
470 instr = push_instr(ctx, OP_regexp);
472 return E_OUTOFMEMORY;
474 instr_ptr(ctx, instr)->arg1.str = str;
475 instr_ptr(ctx, instr)->arg2.lng = literal->u.regexp.flags;
483 static HRESULT compile_expression(compiler_ctx_t *ctx, expression_t *expr)
487 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_add);
489 return compile_logical_expression(ctx, (binary_expression_t*)expr, OP_jmp_z);
491 return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_LAST);
493 return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_add);
495 return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_sub);
497 return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_mul);
499 return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_div);
501 return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_mod);
503 return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_or);
505 return compile_assign_expression(ctx, (binary_expression_t*)expr, OP_xor);
507 return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_bneg);
509 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_or);
511 return compile_comma_expression(ctx, (binary_expression_t*)expr);
513 return compile_conditional_expression(ctx, (conditional_expression_t*)expr);
515 return compile_delete_expression(ctx, (unary_expression_t*)expr);
517 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_div);
519 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_eq);
521 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_eq2);
523 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_gt);
525 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_gteq);
527 return push_instr_bstr(ctx, OP_ident, ((identifier_expression_t*)expr)->identifier);
529 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_in);
531 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_lt);
533 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_lteq);
535 return compile_literal(ctx, ((literal_expression_t*)expr)->literal);
537 return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_neg);
539 return compile_member_expression(ctx, (member_expression_t*)expr);
541 return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_minus);
543 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_mod);
545 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_mul);
547 return compile_new_expression(ctx, (call_expression_t*)expr);
549 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_neq);
551 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_neq2);
553 return compile_logical_expression(ctx, (binary_expression_t*)expr, OP_jmp_nz);
555 return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_tonum);
557 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_sub);
559 return push_instr(ctx, OP_this) == -1 ? E_OUTOFMEMORY : S_OK;
561 return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_void);
563 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_xor);
565 assert(expr->eval != compiled_expression_eval);
566 return compile_interp_fallback(ctx, expr);
572 void release_bytecode(bytecode_t *code)
576 for(i=0; i < code->bstr_cnt; i++)
577 SysFreeString(code->bstr_pool[i]);
579 jsheap_free(&code->heap);
580 heap_free(code->bstr_pool);
581 heap_free(code->instrs);
585 void release_compiler(compiler_ctx_t *ctx)
590 HRESULT compile_subscript(parser_ctx_t *parser, expression_t *expr, unsigned *ret_off)
595 parser->code = heap_alloc_zero(sizeof(bytecode_t));
597 return E_OUTOFMEMORY;
598 jsheap_init(&parser->code->heap);
601 if(!parser->compiler) {
602 parser->compiler = heap_alloc_zero(sizeof(compiler_ctx_t));
603 if(!parser->compiler)
604 return E_OUTOFMEMORY;
606 parser->compiler->parser = parser;
607 parser->compiler->code = parser->code;
610 *ret_off = parser->compiler->code_off;
611 hres = compile_expression(parser->compiler, expr);
615 return push_instr(parser->compiler, OP_ret) == -1 ? E_OUTOFMEMORY : S_OK;