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
23 #include "parser.tab.h"
25 #include "wine/debug.h"
27 WINE_DEFAULT_DEBUG_CHANNEL(vbscript);
37 static HRESULT compile_expression(compile_ctx_t*,expression_t*);
39 static inline void *compiler_alloc(vbscode_t *vbscode, size_t size)
41 return vbsheap_alloc(&vbscode->heap, size);
44 static WCHAR *compiler_alloc_string(vbscode_t *vbscode, const WCHAR *str)
49 size = (strlenW(str)+1)*sizeof(WCHAR);
50 ret = compiler_alloc(vbscode, size);
52 memcpy(ret, str, size);
56 static inline instr_t *instr_ptr(compile_ctx_t *ctx, unsigned id)
58 assert(id < ctx->instr_cnt);
59 return ctx->code->instrs + id;
62 static unsigned push_instr(compile_ctx_t *ctx, vbsop_t op)
64 assert(ctx->instr_size && ctx->instr_size >= ctx->instr_cnt);
66 if(ctx->instr_size == ctx->instr_cnt) {
69 new_instr = heap_realloc(ctx->code->instrs, ctx->instr_size*2*sizeof(instr_t));
73 ctx->code->instrs = new_instr;
77 ctx->code->instrs[ctx->instr_cnt].op = op;
78 return ctx->instr_cnt++;
81 static HRESULT push_instr_int(compile_ctx_t *ctx, vbsop_t op, LONG arg)
85 ret = push_instr(ctx, op);
89 instr_ptr(ctx, ret)->arg1.lng = arg;
93 static HRESULT push_instr_str(compile_ctx_t *ctx, vbsop_t op, const WCHAR *arg)
98 str = compiler_alloc_string(ctx->code, arg);
100 return E_OUTOFMEMORY;
102 instr = push_instr(ctx, op);
104 return E_OUTOFMEMORY;
106 instr_ptr(ctx, instr)->arg1.str = str;
110 static HRESULT push_instr_double(compile_ctx_t *ctx, vbsop_t op, double arg)
115 d = compiler_alloc(ctx->code, sizeof(double));
117 return E_OUTOFMEMORY;
119 instr = push_instr(ctx, op);
121 return E_OUTOFMEMORY;
124 instr_ptr(ctx, instr)->arg1.dbl = d;
128 static BSTR alloc_bstr_arg(compile_ctx_t *ctx, const WCHAR *str)
130 if(!ctx->code->bstr_pool_size) {
131 ctx->code->bstr_pool = heap_alloc(8 * sizeof(BSTR));
132 if(!ctx->code->bstr_pool)
134 ctx->code->bstr_pool_size = 8;
135 }else if(ctx->code->bstr_pool_size == ctx->code->bstr_cnt) {
138 new_pool = heap_realloc(ctx->code->bstr_pool, ctx->code->bstr_pool_size*2*sizeof(BSTR));
142 ctx->code->bstr_pool = new_pool;
143 ctx->code->bstr_pool_size *= 2;
146 ctx->code->bstr_pool[ctx->code->bstr_cnt] = SysAllocString(str);
147 if(!ctx->code->bstr_pool[ctx->code->bstr_cnt])
150 return ctx->code->bstr_pool[ctx->code->bstr_cnt++];
153 static HRESULT push_instr_bstr_uint(compile_ctx_t *ctx, vbsop_t op, const WCHAR *arg1, unsigned arg2)
158 bstr = alloc_bstr_arg(ctx, arg1);
160 return E_OUTOFMEMORY;
162 instr = push_instr(ctx, op);
164 return E_OUTOFMEMORY;
166 instr_ptr(ctx, instr)->arg1.bstr = bstr;
167 instr_ptr(ctx, instr)->arg2.uint = arg2;
171 static HRESULT compile_args(compile_ctx_t *ctx, expression_t *args, unsigned *ret)
173 unsigned arg_cnt = 0;
177 hres = compile_expression(ctx, args);
189 static HRESULT compile_member_expression(compile_ctx_t *ctx, member_expression_t *expr, BOOL ret_val)
191 unsigned arg_cnt = 0;
194 hres = compile_args(ctx, expr->args, &arg_cnt);
199 FIXME("obj_expr not implemented\n");
202 hres = push_instr_bstr_uint(ctx, ret_val ? OP_icall : OP_icallv, expr->identifier, arg_cnt);
208 static HRESULT compile_unary_expression(compile_ctx_t *ctx, unary_expression_t *expr, vbsop_t op)
212 hres = compile_expression(ctx, expr->subexpr);
216 return push_instr(ctx, op) == -1 ? E_OUTOFMEMORY : S_OK;
219 static HRESULT compile_binary_expression(compile_ctx_t *ctx, binary_expression_t *expr, vbsop_t op)
223 hres = compile_expression(ctx, expr->left);
227 hres = compile_expression(ctx, expr->right);
231 return push_instr(ctx, op) == -1 ? E_OUTOFMEMORY : S_OK;
234 static HRESULT compile_expression(compile_ctx_t *ctx, expression_t *expr)
238 return push_instr_int(ctx, OP_bool, ((bool_expression_t*)expr)->value);
240 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_concat);
242 return push_instr_double(ctx, OP_double, ((double_expression_t*)expr)->value);
244 return push_instr(ctx, OP_empty) != -1 ? S_OK : E_OUTOFMEMORY;
246 return compile_binary_expression(ctx, (binary_expression_t*)expr, OP_equal);
248 return compile_member_expression(ctx, (member_expression_t*)expr, TRUE);
250 return compile_unary_expression(ctx, (unary_expression_t*)expr, OP_not);
252 return push_instr(ctx, OP_null) != -1 ? S_OK : E_OUTOFMEMORY;
254 return push_instr_str(ctx, OP_string, ((string_expression_t*)expr)->value);
256 return push_instr_int(ctx, OP_short, ((int_expression_t*)expr)->value);
258 return push_instr_int(ctx, OP_long, ((int_expression_t*)expr)->value);
260 FIXME("Unimplemented expression type %d\n", expr->type);
267 static HRESULT compile_statement(compile_ctx_t *ctx, statement_t *stat)
274 hres = compile_member_expression(ctx, ((call_statement_t*)stat)->expr, FALSE);
277 FIXME("Unimplemented statement type %d\n", stat->type);
289 static HRESULT compile_func(compile_ctx_t *ctx, statement_t *stat, function_t *func)
293 func->code_off = ctx->instr_cnt;
295 hres = compile_statement(ctx, stat);
299 if(push_instr(ctx, OP_ret) == -1)
300 return E_OUTOFMEMORY;
305 void release_vbscode(vbscode_t *code)
309 list_remove(&code->entry);
311 for(i=0; i < code->bstr_cnt; i++)
312 SysFreeString(code->bstr_pool[i]);
314 vbsheap_free(&code->heap);
316 heap_free(code->bstr_pool);
317 heap_free(code->source);
318 heap_free(code->instrs);
322 static vbscode_t *alloc_vbscode(compile_ctx_t *ctx, const WCHAR *source)
326 ret = heap_alloc(sizeof(*ret));
330 ret->source = heap_strdupW(source);
336 ret->instrs = heap_alloc(32*sizeof(instr_t));
338 release_vbscode(ret);
343 ctx->instr_size = 32;
344 vbsheap_init(&ret->heap);
346 ret->option_explicit = ctx->parser.option_explicit;
348 ret->bstr_pool = NULL;
349 ret->bstr_pool_size = 0;
352 ret->global_code.code_ctx = ret;
354 list_init(&ret->entry);
358 HRESULT compile_script(script_ctx_t *script, const WCHAR *src, vbscode_t **ret)
363 hres = parse_script(&ctx.parser, src);
367 ctx.code = alloc_vbscode(&ctx, src);
369 return E_OUTOFMEMORY;
371 hres = compile_func(&ctx, ctx.parser.stats, &ctx.code->global_code);
373 release_vbscode(ctx.code);
377 list_add_tail(&script->code_list, &ctx.code->entry);