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 instr_t *instr_ptr(compile_ctx_t *ctx, unsigned id)
41 assert(id < ctx->instr_cnt);
42 return ctx->code->instrs + id;
45 static unsigned push_instr(compile_ctx_t *ctx, vbsop_t op)
47 assert(ctx->instr_size && ctx->instr_size >= ctx->instr_cnt);
49 if(ctx->instr_size == ctx->instr_cnt) {
52 new_instr = heap_realloc(ctx->code->instrs, ctx->instr_size*2*sizeof(instr_t));
56 ctx->code->instrs = new_instr;
60 ctx->code->instrs[ctx->instr_cnt].op = op;
61 return ctx->instr_cnt++;
64 static HRESULT push_instr_int(compile_ctx_t *ctx, vbsop_t op, LONG arg)
68 ret = push_instr(ctx, op);
72 instr_ptr(ctx, ret)->arg1.lng = arg;
76 static BSTR alloc_bstr_arg(compile_ctx_t *ctx, const WCHAR *str)
78 if(!ctx->code->bstr_pool_size) {
79 ctx->code->bstr_pool = heap_alloc(8 * sizeof(BSTR));
80 if(!ctx->code->bstr_pool)
82 ctx->code->bstr_pool_size = 8;
83 }else if(ctx->code->bstr_pool_size == ctx->code->bstr_cnt) {
86 new_pool = heap_realloc(ctx->code->bstr_pool, ctx->code->bstr_pool_size*2*sizeof(BSTR));
90 ctx->code->bstr_pool = new_pool;
91 ctx->code->bstr_pool_size *= 2;
94 ctx->code->bstr_pool[ctx->code->bstr_cnt] = SysAllocString(str);
95 if(!ctx->code->bstr_pool[ctx->code->bstr_cnt])
98 return ctx->code->bstr_pool[ctx->code->bstr_cnt++];
101 static HRESULT push_instr_bstr_uint(compile_ctx_t *ctx, vbsop_t op, const WCHAR *arg1, unsigned arg2)
106 bstr = alloc_bstr_arg(ctx, arg1);
108 return E_OUTOFMEMORY;
110 instr = push_instr(ctx, op);
112 return E_OUTOFMEMORY;
114 instr_ptr(ctx, instr)->arg1.bstr = bstr;
115 instr_ptr(ctx, instr)->arg2.uint = arg2;
119 static HRESULT compile_args(compile_ctx_t *ctx, expression_t *args, unsigned *ret)
121 unsigned arg_cnt = 0;
125 hres = compile_expression(ctx, args);
137 static HRESULT compile_member_expression(compile_ctx_t *ctx, member_expression_t *expr)
139 unsigned arg_cnt = 0;
142 hres = compile_args(ctx, expr->args, &arg_cnt);
147 FIXME("obj_expr not implemented\n");
150 hres = push_instr_bstr_uint(ctx, OP_icallv, expr->identifier, arg_cnt);
156 static HRESULT compile_expression(compile_ctx_t *ctx, expression_t *expr)
160 return push_instr_int(ctx, OP_bool, ((bool_expression_t*)expr)->value);
162 FIXME("Unimplemented expression type %d\n", expr->type);
169 static HRESULT compile_statement(compile_ctx_t *ctx, statement_t *stat)
176 hres = compile_member_expression(ctx, ((call_statement_t*)stat)->expr);
179 FIXME("Unimplemented statement type %d\n", stat->type);
191 static HRESULT compile_func(compile_ctx_t *ctx, statement_t *stat, function_t *func)
195 func->code_off = ctx->instr_cnt;
197 hres = compile_statement(ctx, stat);
201 if(push_instr(ctx, OP_ret) == -1)
202 return E_OUTOFMEMORY;
207 void release_vbscode(vbscode_t *code)
211 list_remove(&code->entry);
213 for(i=0; i < code->bstr_cnt; i++)
214 SysFreeString(code->bstr_pool[i]);
216 heap_free(code->bstr_pool);
217 heap_free(code->source);
218 heap_free(code->instrs);
222 static vbscode_t *alloc_vbscode(compile_ctx_t *ctx, const WCHAR *source)
226 ret = heap_alloc(sizeof(*ret));
230 ret->source = heap_strdupW(source);
236 ret->instrs = heap_alloc(32*sizeof(instr_t));
238 release_vbscode(ret);
243 ctx->instr_size = 32;
245 ret->bstr_pool = NULL;
246 ret->bstr_pool_size = 0;
249 ret->global_code.code_ctx = ret;
251 list_init(&ret->entry);
255 HRESULT compile_script(script_ctx_t *script, const WCHAR *src, vbscode_t **ret)
260 hres = parse_script(&ctx.parser, src);
264 ctx.code = alloc_vbscode(&ctx, src);
266 return E_OUTOFMEMORY;
268 hres = compile_func(&ctx, ctx.parser.stats, &ctx.code->global_code);
270 release_vbscode(ctx.code);
274 list_add_tail(&script->code_list, &ctx.code->entry);