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6 * this software and associated documentation files (the "Software"), to deal in
7 * the Software without restriction, including without limitation the rights to
8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is furnished to do
10 * so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in all
13 * copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 #define ast_instantiate(T, ctx, destroyfn) \
31 T* self = (T*)mem_a(sizeof(T)); \
32 ast_node_init((ast_node*)self, ctx); \
33 ( (ast_node*)self )->node.destroy = (ast_node_delete*)destroyfn
35 /* It must not be possible to get here. */
36 static void _ast_node_destroy(ast_node *self)
38 fprintf(stderr, "ast node missing destroy()\n");
42 /* Initialize main ast node aprts */
43 static void ast_node_init(ast_node *self, lex_ctx ctx)
45 self->node.context = ctx;
46 self->node.destroy = &_ast_node_destroy;
47 self->node.keep = false;
50 /* General expression initialization */
51 static void ast_expression_init(ast_expression *self,
52 ast_expression_codegen *codegen)
54 self->expression.codegen = codegen;
57 ast_value* ast_value_new(lex_ctx ctx, const char *name, int t)
59 ast_instantiate(ast_value, ctx, ast_value_delete);
60 ast_expression_init((ast_expression*)self,
61 (ast_expression_codegen*)&ast_value_codegen);
62 self->expression.node.keep = true; /* keep */
64 self->name = name ? util_strdup(name) : NULL;
67 MEM_VECTOR_INIT(self, params);
68 self->isconst = false;
69 memset(&self->constval, 0, sizeof(self->constval));
75 MEM_VEC_FUNCTIONS(ast_value, ast_value*, params)
77 void ast_value_delete(ast_value* self)
81 mem_d((void*)self->name);
82 for (i = 0; i < self->params_count; ++i)
83 ast_value_delete(self->params[i]); /* delete, the ast_function is expected to die first */
84 MEM_VECTOR_CLEAR(self, params);
85 if (self->next) /* delete, not unref, types are always copied */
86 ast_delete(self->next);
91 mem_d((void*)self->constval.vstring);
94 /* unlink us from the function node */
95 self->constval.vfunc->vtype = NULL;
97 /* NOTE: delete function? currently collected in
98 * the parser structure
107 bool ast_value_set_name(ast_value *self, const char *name)
110 mem_d((void*)self->name);
111 self->name = util_strdup(name);
115 ast_binary* ast_binary_new(lex_ctx ctx, int op,
116 ast_expression* left, ast_expression* right)
118 ast_instantiate(ast_binary, ctx, ast_binary_delete);
119 ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_binary_codegen);
128 void ast_binary_delete(ast_binary *self)
130 ast_unref(self->left);
131 ast_unref(self->right);
135 ast_entfield* ast_entfield_new(lex_ctx ctx, ast_expression *entity, ast_expression *field)
137 ast_instantiate(ast_entfield, ctx, ast_entfield_delete);
138 ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_entfield_codegen);
140 self->entity = entity;
146 void ast_entfield_delete(ast_entfield *self)
148 ast_unref(self->entity);
149 ast_unref(self->field);
153 ast_store* ast_store_new(lex_ctx ctx, int op,
154 ast_value *dest, ast_expression *source)
156 ast_instantiate(ast_store, ctx, ast_store_delete);
157 ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_store_codegen);
161 self->source = source;
166 void ast_store_delete(ast_store *self)
168 ast_unref(self->dest);
169 ast_unref(self->source);
173 ast_block* ast_block_new(lex_ctx ctx)
175 ast_instantiate(ast_block, ctx, ast_block_delete);
176 ast_expression_init((ast_expression*)self,
177 (ast_expression_codegen*)&ast_block_codegen);
179 MEM_VECTOR_INIT(self, locals);
180 MEM_VECTOR_INIT(self, exprs);
184 MEM_VEC_FUNCTIONS(ast_block, ast_value*, locals)
185 MEM_VEC_FUNCTIONS(ast_block, ast_expression*, exprs)
187 void ast_block_delete(ast_block *self)
190 for (i = 0; i < self->exprs_count; ++i)
191 ast_unref(self->exprs[i]);
192 MEM_VECTOR_CLEAR(self, exprs);
193 for (i = 0; i < self->locals_count; ++i)
194 ast_delete(self->locals[i]);
195 MEM_VECTOR_CLEAR(self, locals);
199 ast_function* ast_function_new(lex_ctx ctx, const char *name, ast_value *vtype)
201 ast_instantiate(ast_function, ctx, ast_function_delete);
205 vtype->vtype != TYPE_FUNCTION)
212 self->name = name ? util_strdup(name) : NULL;
213 MEM_VECTOR_INIT(self, blocks);
215 self->ir_func = NULL;
217 vtype->isconst = true;
218 vtype->constval.vfunc = self;
223 MEM_VEC_FUNCTIONS(ast_function, ast_block*, blocks)
225 void ast_function_delete(ast_function *self)
229 mem_d((void*)self->name);
231 /* ast_value_delete(self->vtype); */
232 self->vtype->isconst = false;
233 self->vtype->constval.vfunc = NULL;
234 /* We use unref - if it was stored in a global table it is supposed
235 * to be deleted from *there*
237 ast_unref(self->vtype);
239 for (i = 0; i < self->blocks_count; ++i)
240 ast_delete(self->blocks[i]);
241 MEM_VECTOR_CLEAR(self, blocks);
245 /*********************************************************************/
249 bool ast_value_codegen(ast_value *self, ast_function *func, ir_value **out)
251 /* NOTE: This is the codegen for a variable used in an expression.
252 * It is not the codegen to generate the value. For this purpose,
253 * ast_local_codegen and ast_global_codegen are to be used before this
254 * is executed. ast_function_codegen should take care of its locals,
255 * and the ast-user should take care of ast_global_codegen to be used
256 * on all the globals.
261 bool ast_global_codegen(ast_value *self, ir_builder *ir)
264 if (self->isconst && self->vtype == TYPE_FUNCTION)
266 ir_function *func = ir_builder_create_function(ir, self->name);
270 self->constval.vfunc->ir_func = func;
271 /* The function is filled later on ast_function_codegen... */
275 v = ir_builder_create_global(ir, self->name, self->vtype);
283 if (!ir_value_set_float(v, self->constval.vfloat))
287 if (!ir_value_set_vector(v, self->constval.vvec))
291 if (!ir_value_set_string(v, self->constval.vstring))
295 /* Cannot generate an IR value for a function,
296 * need a pointer pointing to a function rather.
300 printf("TODO: global constant type %i\n", self->vtype);
305 /* link us to the ir_value */
309 error: /* clean up */
314 bool ast_function_codegen(ast_function *self, ir_builder *ir)
316 if (!self->ir_func) {
317 printf("ast_function's related ast_value was not generated yet\n");
323 bool ast_block_codegen(ast_block *self, ast_function *func, ir_value **out)
328 bool ast_store_codegen(ast_store *self, ast_function *func, ir_value **out)
333 bool ast_binary_codegen(ast_binary *self, ast_function *func, ir_value **out)
338 bool ast_entfield_codegen(ast_entfield *self, ast_function *func, ir_value **out)