5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
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)); \
35 ast_node_init((ast_node*)self, ctx, TYPE_##T); \
36 ( (ast_node*)self )->node.destroy = (ast_node_delete*)destroyfn
39 static void asterror(lex_ctx ctx, const char *msg, ...)
43 cvprintmsg(ctx, LVL_ERROR, "error", msg, ap);
47 /* It must not be possible to get here. */
48 static GMQCC_NORETURN void _ast_node_destroy(ast_node *self)
50 fprintf(stderr, "ast node missing destroy()\n");
54 /* Initialize main ast node aprts */
55 static void ast_node_init(ast_node *self, lex_ctx ctx, int nodetype)
57 self->node.context = ctx;
58 self->node.destroy = &_ast_node_destroy;
59 self->node.keep = false;
60 self->node.nodetype = nodetype;
63 /* General expression initialization */
64 static void ast_expression_init(ast_expression *self,
65 ast_expression_codegen *codegen)
67 self->expression.codegen = codegen;
68 self->expression.vtype = TYPE_VOID;
69 self->expression.next = NULL;
70 self->expression.outl = NULL;
71 self->expression.outr = NULL;
72 self->expression.variadic = false;
73 MEM_VECTOR_INIT(&self->expression, params);
76 static void ast_expression_delete(ast_expression *self)
79 if (self->expression.next)
80 ast_delete(self->expression.next);
81 for (i = 0; i < self->expression.params_count; ++i) {
82 ast_delete(self->expression.params[i]);
84 MEM_VECTOR_CLEAR(&self->expression, params);
87 static void ast_expression_delete_full(ast_expression *self)
89 ast_expression_delete(self);
93 MEM_VEC_FUNCTIONS(ast_expression_common, ast_value*, params)
95 ast_value* ast_value_copy(const ast_value *self)
98 const ast_expression_common *fromex;
99 ast_expression_common *selfex;
100 ast_value *cp = ast_value_new(self->expression.node.context, self->name, self->expression.vtype);
101 if (self->expression.next) {
102 cp->expression.next = ast_type_copy(self->expression.node.context, self->expression.next);
103 if (!cp->expression.next) {
104 ast_value_delete(cp);
108 fromex = &self->expression;
109 selfex = &cp->expression;
110 selfex->variadic = fromex->variadic;
111 for (i = 0; i < fromex->params_count; ++i) {
112 ast_value *v = ast_value_copy(fromex->params[i]);
113 if (!v || !ast_expression_common_params_add(selfex, v)) {
114 ast_value_delete(cp);
121 bool ast_type_adopt_impl(ast_expression *self, const ast_expression *other)
124 const ast_expression_common *fromex;
125 ast_expression_common *selfex;
126 self->expression.vtype = other->expression.vtype;
127 if (other->expression.next) {
128 self->expression.next = (ast_expression*)ast_type_copy(ast_ctx(self), other->expression.next);
129 if (!self->expression.next)
132 fromex = &other->expression;
133 selfex = &self->expression;
134 selfex->variadic = fromex->variadic;
135 for (i = 0; i < fromex->params_count; ++i) {
136 ast_value *v = ast_value_copy(fromex->params[i]);
137 if (!v || !ast_expression_common_params_add(selfex, v))
143 static ast_expression* ast_shallow_type(lex_ctx ctx, int vtype)
145 ast_instantiate(ast_expression, ctx, ast_expression_delete_full);
146 ast_expression_init(self, NULL);
147 self->expression.codegen = NULL;
148 self->expression.next = NULL;
149 self->expression.vtype = vtype;
153 ast_expression* ast_type_copy(lex_ctx ctx, const ast_expression *ex)
156 const ast_expression_common *fromex;
157 ast_expression_common *selfex;
163 ast_instantiate(ast_expression, ctx, ast_expression_delete_full);
164 ast_expression_init(self, NULL);
166 fromex = &ex->expression;
167 selfex = &self->expression;
169 /* This may never be codegen()d */
170 selfex->codegen = NULL;
172 selfex->vtype = fromex->vtype;
175 selfex->next = ast_type_copy(ctx, fromex->next);
177 ast_expression_delete_full(self);
184 selfex->variadic = fromex->variadic;
185 for (i = 0; i < fromex->params_count; ++i) {
186 ast_value *v = ast_value_copy(fromex->params[i]);
187 if (!v || !ast_expression_common_params_add(selfex, v)) {
188 ast_expression_delete_full(self);
197 bool ast_compare_type(ast_expression *a, ast_expression *b)
199 if (a->expression.vtype != b->expression.vtype)
201 if (!a->expression.next != !b->expression.next)
203 if (a->expression.params_count != b->expression.params_count)
205 if (a->expression.variadic != b->expression.variadic)
207 if (a->expression.params_count) {
209 for (i = 0; i < a->expression.params_count; ++i) {
210 if (!ast_compare_type((ast_expression*)a->expression.params[i],
211 (ast_expression*)b->expression.params[i]))
215 if (a->expression.next)
216 return ast_compare_type(a->expression.next, b->expression.next);
220 ast_value* ast_value_new(lex_ctx ctx, const char *name, int t)
222 ast_instantiate(ast_value, ctx, ast_value_delete);
223 ast_expression_init((ast_expression*)self,
224 (ast_expression_codegen*)&ast_value_codegen);
225 self->expression.node.keep = true; /* keep */
227 self->name = name ? util_strdup(name) : NULL;
228 self->expression.vtype = t;
229 self->expression.next = NULL;
230 self->isconst = false;
231 memset(&self->constval, 0, sizeof(self->constval));
238 void ast_value_delete(ast_value* self)
241 mem_d((void*)self->name);
243 switch (self->expression.vtype)
246 mem_d((void*)self->constval.vstring);
249 /* unlink us from the function node */
250 self->constval.vfunc->vtype = NULL;
252 /* NOTE: delete function? currently collected in
253 * the parser structure
259 ast_expression_delete((ast_expression*)self);
263 bool GMQCC_WARN ast_value_params_add(ast_value *self, ast_value *p)
265 return ast_expression_common_params_add(&self->expression, p);
268 bool ast_value_set_name(ast_value *self, const char *name)
271 mem_d((void*)self->name);
272 self->name = util_strdup(name);
276 ast_binary* ast_binary_new(lex_ctx ctx, int op,
277 ast_expression* left, ast_expression* right)
279 ast_instantiate(ast_binary, ctx, ast_binary_delete);
280 ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_binary_codegen);
286 if (op >= INSTR_EQ_F && op <= INSTR_GT)
287 self->expression.vtype = TYPE_FLOAT;
288 else if (op == INSTR_AND || op == INSTR_OR ||
289 op == INSTR_BITAND || op == INSTR_BITOR)
290 self->expression.vtype = TYPE_FLOAT;
291 else if (op == INSTR_MUL_VF || op == INSTR_MUL_FV)
292 self->expression.vtype = TYPE_VECTOR;
293 else if (op == INSTR_MUL_V)
294 self->expression.vtype = TYPE_FLOAT;
296 self->expression.vtype = left->expression.vtype;
301 void ast_binary_delete(ast_binary *self)
303 ast_unref(self->left);
304 ast_unref(self->right);
305 ast_expression_delete((ast_expression*)self);
309 ast_binstore* ast_binstore_new(lex_ctx ctx, int storop, int op,
310 ast_expression* left, ast_expression* right)
312 ast_instantiate(ast_binstore, ctx, ast_binstore_delete);
313 ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_binstore_codegen);
315 self->opstore = storop;
318 self->source = right;
320 self->expression.vtype = left->expression.vtype;
321 if (left->expression.next) {
322 self->expression.next = ast_type_copy(ctx, left);
323 if (!self->expression.next) {
329 self->expression.next = NULL;
334 void ast_binstore_delete(ast_binstore *self)
336 ast_unref(self->dest);
337 ast_unref(self->source);
338 ast_expression_delete((ast_expression*)self);
342 ast_unary* ast_unary_new(lex_ctx ctx, int op,
343 ast_expression *expr)
345 ast_instantiate(ast_unary, ctx, ast_unary_delete);
346 ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_unary_codegen);
349 self->operand = expr;
351 if (op >= INSTR_NOT_F && op <= INSTR_NOT_FNC) {
352 self->expression.vtype = TYPE_FLOAT;
354 asterror(ctx, "cannot determine type of unary operation %s", asm_instr[op].m);
359 void ast_unary_delete(ast_unary *self)
361 ast_unref(self->operand);
362 ast_expression_delete((ast_expression*)self);
366 ast_return* ast_return_new(lex_ctx ctx, ast_expression *expr)
368 ast_instantiate(ast_return, ctx, ast_return_delete);
369 ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_return_codegen);
371 self->operand = expr;
376 void ast_return_delete(ast_return *self)
379 ast_unref(self->operand);
380 ast_expression_delete((ast_expression*)self);
384 ast_entfield* ast_entfield_new(lex_ctx ctx, ast_expression *entity, ast_expression *field)
386 const ast_expression *outtype;
388 ast_instantiate(ast_entfield, ctx, ast_entfield_delete);
390 if (field->expression.vtype != TYPE_FIELD) {
395 outtype = field->expression.next;
398 /* Error: field has no type... */
402 ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_entfield_codegen);
404 self->entity = entity;
407 if (!ast_type_adopt(self, outtype)) {
408 ast_entfield_delete(self);
415 void ast_entfield_delete(ast_entfield *self)
417 ast_unref(self->entity);
418 ast_unref(self->field);
419 ast_expression_delete((ast_expression*)self);
423 ast_member* ast_member_new(lex_ctx ctx, ast_expression *owner, unsigned int field)
425 ast_instantiate(ast_member, ctx, ast_member_delete);
431 if (owner->expression.vtype != TYPE_VECTOR &&
432 owner->expression.vtype != TYPE_FIELD) {
433 asterror(ctx, "member-access on an invalid owner of type %s", type_name[owner->expression.vtype]);
438 ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_member_codegen);
439 self->expression.node.keep = true; /* keep */
441 if (owner->expression.vtype == TYPE_VECTOR) {
442 self->expression.vtype = TYPE_FLOAT;
443 self->expression.next = NULL;
445 self->expression.vtype = TYPE_FIELD;
446 self->expression.next = ast_shallow_type(ctx, TYPE_FLOAT);
455 void ast_member_delete(ast_member *self)
457 /* The owner is always an ast_value, which has .keep=true,
458 * also: ast_members are usually deleted after the owner, thus
459 * this will cause invalid access
460 ast_unref(self->owner);
461 * once we allow (expression).x to access a vector-member, we need
462 * to change this: preferably by creating an alternate ast node for this
463 * purpose that is not garbage-collected.
465 ast_expression_delete((ast_expression*)self);
469 ast_ifthen* ast_ifthen_new(lex_ctx ctx, ast_expression *cond, ast_expression *ontrue, ast_expression *onfalse)
471 ast_instantiate(ast_ifthen, ctx, ast_ifthen_delete);
472 if (!ontrue && !onfalse) {
473 /* because it is invalid */
477 ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_ifthen_codegen);
480 self->on_true = ontrue;
481 self->on_false = onfalse;
486 void ast_ifthen_delete(ast_ifthen *self)
488 ast_unref(self->cond);
490 ast_unref(self->on_true);
492 ast_unref(self->on_false);
493 ast_expression_delete((ast_expression*)self);
497 ast_ternary* ast_ternary_new(lex_ctx ctx, ast_expression *cond, ast_expression *ontrue, ast_expression *onfalse)
499 ast_instantiate(ast_ternary, ctx, ast_ternary_delete);
500 /* This time NEITHER must be NULL */
501 if (!ontrue || !onfalse) {
505 ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_ternary_codegen);
508 self->on_true = ontrue;
509 self->on_false = onfalse;
510 self->phi_out = NULL;
515 void ast_ternary_delete(ast_ternary *self)
517 ast_unref(self->cond);
518 ast_unref(self->on_true);
519 ast_unref(self->on_false);
520 ast_expression_delete((ast_expression*)self);
524 ast_loop* ast_loop_new(lex_ctx ctx,
525 ast_expression *initexpr,
526 ast_expression *precond,
527 ast_expression *postcond,
528 ast_expression *increment,
529 ast_expression *body)
531 ast_instantiate(ast_loop, ctx, ast_loop_delete);
532 ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_loop_codegen);
534 self->initexpr = initexpr;
535 self->precond = precond;
536 self->postcond = postcond;
537 self->increment = increment;
543 void ast_loop_delete(ast_loop *self)
546 ast_unref(self->initexpr);
548 ast_unref(self->precond);
550 ast_unref(self->postcond);
552 ast_unref(self->increment);
554 ast_unref(self->body);
555 ast_expression_delete((ast_expression*)self);
559 ast_call* ast_call_new(lex_ctx ctx,
560 ast_expression *funcexpr)
562 ast_instantiate(ast_call, ctx, ast_call_delete);
563 ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_call_codegen);
565 MEM_VECTOR_INIT(self, params);
567 self->func = funcexpr;
569 self->expression.vtype = funcexpr->expression.next->expression.vtype;
570 if (funcexpr->expression.next->expression.next)
571 self->expression.next = ast_type_copy(ctx, funcexpr->expression.next->expression.next);
575 MEM_VEC_FUNCTIONS(ast_call, ast_expression*, params)
577 void ast_call_delete(ast_call *self)
580 for (i = 0; i < self->params_count; ++i)
581 ast_unref(self->params[i]);
582 MEM_VECTOR_CLEAR(self, params);
585 ast_unref(self->func);
587 ast_expression_delete((ast_expression*)self);
591 ast_store* ast_store_new(lex_ctx ctx, int op,
592 ast_expression *dest, ast_expression *source)
594 ast_instantiate(ast_store, ctx, ast_store_delete);
595 ast_expression_init((ast_expression*)self, (ast_expression_codegen*)&ast_store_codegen);
599 self->source = source;
604 void ast_store_delete(ast_store *self)
606 ast_unref(self->dest);
607 ast_unref(self->source);
608 ast_expression_delete((ast_expression*)self);
612 ast_block* ast_block_new(lex_ctx ctx)
614 ast_instantiate(ast_block, ctx, ast_block_delete);
615 ast_expression_init((ast_expression*)self,
616 (ast_expression_codegen*)&ast_block_codegen);
618 MEM_VECTOR_INIT(self, locals);
619 MEM_VECTOR_INIT(self, exprs);
620 MEM_VECTOR_INIT(self, collect);
624 MEM_VEC_FUNCTIONS(ast_block, ast_value*, locals)
625 MEM_VEC_FUNCTIONS(ast_block, ast_expression*, exprs)
626 MEM_VEC_FUNCTIONS(ast_block, ast_expression*, collect)
628 bool ast_block_collect(ast_block *self, ast_expression *expr)
630 if (!ast_block_collect_add(self, expr))
632 expr->expression.node.keep = true;
636 void ast_block_delete(ast_block *self)
639 for (i = 0; i < self->exprs_count; ++i)
640 ast_unref(self->exprs[i]);
641 MEM_VECTOR_CLEAR(self, exprs);
642 for (i = 0; i < self->locals_count; ++i)
643 ast_delete(self->locals[i]);
644 MEM_VECTOR_CLEAR(self, locals);
645 for (i = 0; i < self->collect_count; ++i)
646 ast_delete(self->collect[i]);
647 MEM_VECTOR_CLEAR(self, collect);
648 ast_expression_delete((ast_expression*)self);
652 bool ast_block_set_type(ast_block *self, ast_expression *from)
654 if (self->expression.next)
655 ast_delete(self->expression.next);
656 self->expression.vtype = from->expression.vtype;
657 if (from->expression.next) {
658 self->expression.next = ast_type_copy(self->expression.node.context, from->expression.next);
659 if (!self->expression.next)
663 self->expression.next = NULL;
667 ast_function* ast_function_new(lex_ctx ctx, const char *name, ast_value *vtype)
669 ast_instantiate(ast_function, ctx, ast_function_delete);
673 vtype->expression.vtype != TYPE_FUNCTION)
680 self->name = name ? util_strdup(name) : NULL;
681 MEM_VECTOR_INIT(self, blocks);
683 self->labelcount = 0;
686 self->ir_func = NULL;
687 self->curblock = NULL;
689 self->breakblock = NULL;
690 self->continueblock = NULL;
692 vtype->isconst = true;
693 vtype->constval.vfunc = self;
698 MEM_VEC_FUNCTIONS(ast_function, ast_block*, blocks)
700 void ast_function_delete(ast_function *self)
704 mem_d((void*)self->name);
706 /* ast_value_delete(self->vtype); */
707 self->vtype->isconst = false;
708 self->vtype->constval.vfunc = NULL;
709 /* We use unref - if it was stored in a global table it is supposed
710 * to be deleted from *there*
712 ast_unref(self->vtype);
714 for (i = 0; i < self->blocks_count; ++i)
715 ast_delete(self->blocks[i]);
716 MEM_VECTOR_CLEAR(self, blocks);
720 static void ast_util_hexitoa(char *buf, size_t size, unsigned int num)
722 unsigned int base = 10;
723 #define checknul() do { if (size == 1) { *buf = 0; return; } } while (0)
724 #define addch(x) do { *buf++ = (x); --size; checknul(); } while (0)
733 int digit = num % base;
744 const char* ast_function_label(ast_function *self, const char *prefix)
746 size_t id = (self->labelcount++);
747 size_t len = strlen(prefix);
748 strncpy(self->labelbuf, prefix, sizeof(self->labelbuf));
749 ast_util_hexitoa(self->labelbuf + len, sizeof(self->labelbuf)-len, id);
750 return self->labelbuf;
753 /*********************************************************************/
755 * by convention you must never pass NULL to the 'ir_value **out'
756 * parameter. If you really don't care about the output, pass a dummy.
757 * But I can't imagine a pituation where the output is truly unnecessary.
760 bool ast_value_codegen(ast_value *self, ast_function *func, bool lvalue, ir_value **out)
762 /* NOTE: This is the codegen for a variable used in an expression.
763 * It is not the codegen to generate the value. For this purpose,
764 * ast_local_codegen and ast_global_codegen are to be used before this
765 * is executed. ast_function_codegen should take care of its locals,
766 * and the ast-user should take care of ast_global_codegen to be used
767 * on all the globals.
770 asterror(ast_ctx(self), "ast_value used before generated (%s)", self->name);
777 bool ast_global_codegen(ast_value *self, ir_builder *ir)
780 if (self->isconst && self->expression.vtype == TYPE_FUNCTION)
782 ir_function *func = ir_builder_create_function(ir, self->name, self->expression.next->expression.vtype);
785 func->context = ast_ctx(self);
787 self->constval.vfunc->ir_func = func;
788 self->ir_v = func->value;
789 /* The function is filled later on ast_function_codegen... */
793 if (self->expression.vtype == TYPE_FIELD) {
794 v = ir_builder_create_field(ir, self->name, self->expression.next->expression.vtype);
797 v->context = ast_ctx(self);
799 asterror(ast_ctx(self), "TODO: constant field pointers with value");
806 v = ir_builder_create_global(ir, self->name, self->expression.vtype);
808 asterror(ast_ctx(self), "ir_builder_create_global failed");
811 v->context = ast_ctx(self);
814 switch (self->expression.vtype)
817 if (!ir_value_set_float(v, self->constval.vfloat))
821 if (!ir_value_set_vector(v, self->constval.vvec))
825 if (!ir_value_set_string(v, self->constval.vstring))
829 asterror(ast_ctx(self), "global of type function not properly generated");
831 /* Cannot generate an IR value for a function,
832 * need a pointer pointing to a function rather.
835 asterror(ast_ctx(self), "TODO: global constant type %i", self->expression.vtype);
840 /* link us to the ir_value */
844 error: /* clean up */
849 bool ast_local_codegen(ast_value *self, ir_function *func, bool param)
852 if (self->isconst && self->expression.vtype == TYPE_FUNCTION)
854 /* Do we allow local functions? I think not...
855 * this is NOT a function pointer atm.
860 v = ir_function_create_local(func, self->name, self->expression.vtype, param);
863 v->context = ast_ctx(self);
865 /* A constant local... hmmm...
866 * I suppose the IR will have to deal with this
869 switch (self->expression.vtype)
872 if (!ir_value_set_float(v, self->constval.vfloat))
876 if (!ir_value_set_vector(v, self->constval.vvec))
880 if (!ir_value_set_string(v, self->constval.vstring))
884 asterror(ast_ctx(self), "TODO: global constant type %i", self->expression.vtype);
889 /* link us to the ir_value */
893 error: /* clean up */
898 bool ast_function_codegen(ast_function *self, ir_builder *ir)
902 ast_expression_common *ec;
907 asterror(ast_ctx(self), "ast_function's related ast_value was not generated yet");
911 /* fill the parameter list */
912 ec = &self->vtype->expression;
913 for (i = 0; i < ec->params_count; ++i)
915 if (!ir_function_params_add(irf, ec->params[i]->expression.vtype))
917 if (!self->builtin) {
918 if (!ast_local_codegen(ec->params[i], self->ir_func, true))
924 irf->builtin = self->builtin;
928 if (!self->blocks_count) {
929 asterror(ast_ctx(self), "function `%s` has no body", self->name);
933 self->curblock = ir_function_create_block(irf, "entry");
934 if (!self->curblock) {
935 asterror(ast_ctx(self), "failed to allocate entry block for `%s`", self->name);
939 for (i = 0; i < self->blocks_count; ++i) {
940 ast_expression_codegen *gen = self->blocks[i]->expression.codegen;
941 if (!(*gen)((ast_expression*)self->blocks[i], self, false, &dummy))
945 /* TODO: check return types */
946 if (!self->curblock->is_return)
948 return ir_block_create_return(self->curblock, NULL);
949 /* From now on the parser has to handle this situation */
951 if (!self->vtype->expression.next ||
952 self->vtype->expression.next->expression.vtype == TYPE_VOID)
954 return ir_block_create_return(self->curblock, NULL);
958 /* error("missing return"); */
959 asterror(ast_ctx(self), "function `%s` missing return value", self->name);
967 /* Note, you will not see ast_block_codegen generate ir_blocks.
968 * To the AST and the IR, blocks are 2 different things.
969 * In the AST it represents a block of code, usually enclosed in
970 * curly braces {...}.
971 * While in the IR it represents a block in terms of control-flow.
973 bool ast_block_codegen(ast_block *self, ast_function *func, bool lvalue, ir_value **out)
978 * Note: an ast-representation using the comma-operator
979 * of the form: (a, b, c) = x should not assign to c...
982 if (self->expression.outr) {
983 *out = self->expression.outr;
987 /* output is NULL at first, we'll have each expression
988 * assign to out output, thus, a comma-operator represention
989 * using an ast_block will return the last generated value,
990 * so: (b, c) + a executed both b and c, and returns c,
991 * which is then added to a.
995 /* generate locals */
996 for (i = 0; i < self->locals_count; ++i)
998 if (!ast_local_codegen(self->locals[i], func->ir_func, false)) {
1000 asterror(ast_ctx(self), "failed to generate local `%s`", self->locals[i]->name);
1005 for (i = 0; i < self->exprs_count; ++i)
1007 ast_expression_codegen *gen = self->exprs[i]->expression.codegen;
1008 if (!(*gen)(self->exprs[i], func, false, out))
1012 self->expression.outr = *out;
1017 bool ast_store_codegen(ast_store *self, ast_function *func, bool lvalue, ir_value **out)
1019 ast_expression_codegen *cgen;
1020 ir_value *left, *right;
1022 if (lvalue && self->expression.outl) {
1023 *out = self->expression.outl;
1027 if (!lvalue && self->expression.outr) {
1028 *out = self->expression.outr;
1032 cgen = self->dest->expression.codegen;
1034 if (!(*cgen)((ast_expression*)(self->dest), func, true, &left))
1036 self->expression.outl = left;
1038 cgen = self->source->expression.codegen;
1040 if (!(*cgen)((ast_expression*)(self->source), func, false, &right))
1043 if (!ir_block_create_store_op(func->curblock, self->op, left, right))
1045 self->expression.outr = right;
1047 /* Theoretically, an assinment returns its left side as an
1048 * lvalue, if we don't need an lvalue though, we return
1049 * the right side as an rvalue, otherwise we have to
1050 * somehow know whether or not we need to dereference the pointer
1051 * on the left side - that is: OP_LOAD if it was an address.
1052 * Also: in original QC we cannot OP_LOADP *anyway*.
1054 *out = (lvalue ? left : right);
1059 bool ast_binary_codegen(ast_binary *self, ast_function *func, bool lvalue, ir_value **out)
1061 ast_expression_codegen *cgen;
1062 ir_value *left, *right;
1064 /* In the context of a binary operation, we can disregard
1068 if (self->expression.outr) {
1069 *out = self->expression.outr;
1073 cgen = self->left->expression.codegen;
1075 if (!(*cgen)((ast_expression*)(self->left), func, false, &left))
1078 cgen = self->right->expression.codegen;
1080 if (!(*cgen)((ast_expression*)(self->right), func, false, &right))
1083 *out = ir_block_create_binop(func->curblock, ast_function_label(func, "bin"),
1084 self->op, left, right);
1087 self->expression.outr = *out;
1092 bool ast_binstore_codegen(ast_binstore *self, ast_function *func, bool lvalue, ir_value **out)
1094 ast_expression_codegen *cgen;
1095 ir_value *leftl, *leftr, *right, *bin;
1097 if (lvalue && self->expression.outl) {
1098 *out = self->expression.outl;
1102 if (!lvalue && self->expression.outr) {
1103 *out = self->expression.outr;
1107 /* for a binstore we need both an lvalue and an rvalue for the left side */
1108 /* rvalue of destination! */
1109 cgen = self->dest->expression.codegen;
1110 if (!(*cgen)((ast_expression*)(self->dest), func, false, &leftr))
1113 /* source as rvalue only */
1114 cgen = self->source->expression.codegen;
1115 if (!(*cgen)((ast_expression*)(self->source), func, false, &right))
1118 /* now the binary */
1119 bin = ir_block_create_binop(func->curblock, ast_function_label(func, "binst"),
1120 self->opbin, leftr, right);
1121 self->expression.outr = bin;
1123 /* now store them */
1124 cgen = self->dest->expression.codegen;
1125 /* lvalue of destination */
1126 if (!(*cgen)((ast_expression*)(self->dest), func, true, &leftl))
1128 self->expression.outl = leftl;
1130 if (!ir_block_create_store_op(func->curblock, self->opstore, leftl, bin))
1132 self->expression.outr = bin;
1134 /* Theoretically, an assinment returns its left side as an
1135 * lvalue, if we don't need an lvalue though, we return
1136 * the right side as an rvalue, otherwise we have to
1137 * somehow know whether or not we need to dereference the pointer
1138 * on the left side - that is: OP_LOAD if it was an address.
1139 * Also: in original QC we cannot OP_LOADP *anyway*.
1141 *out = (lvalue ? leftl : bin);
1146 bool ast_unary_codegen(ast_unary *self, ast_function *func, bool lvalue, ir_value **out)
1148 ast_expression_codegen *cgen;
1151 /* In the context of a unary operation, we can disregard
1155 if (self->expression.outr) {
1156 *out = self->expression.outr;
1160 cgen = self->operand->expression.codegen;
1162 if (!(*cgen)((ast_expression*)(self->operand), func, false, &operand))
1165 *out = ir_block_create_unary(func->curblock, ast_function_label(func, "unary"),
1169 self->expression.outr = *out;
1174 bool ast_return_codegen(ast_return *self, ast_function *func, bool lvalue, ir_value **out)
1176 ast_expression_codegen *cgen;
1179 /* In the context of a return operation, we can disregard
1183 if (self->expression.outr) {
1184 asterror(ast_ctx(self), "internal error: ast_return cannot be reused, it bears no result!");
1187 self->expression.outr = (ir_value*)1;
1189 if (self->operand) {
1190 cgen = self->operand->expression.codegen;
1192 if (!(*cgen)((ast_expression*)(self->operand), func, false, &operand))
1195 if (!ir_block_create_return(func->curblock, operand))
1198 if (!ir_block_create_return(func->curblock, NULL))
1205 bool ast_entfield_codegen(ast_entfield *self, ast_function *func, bool lvalue, ir_value **out)
1207 ast_expression_codegen *cgen;
1208 ir_value *ent, *field;
1210 /* This function needs to take the 'lvalue' flag into account!
1211 * As lvalue we provide a field-pointer, as rvalue we provide the
1215 if (lvalue && self->expression.outl) {
1216 *out = self->expression.outl;
1220 if (!lvalue && self->expression.outr) {
1221 *out = self->expression.outr;
1225 cgen = self->entity->expression.codegen;
1226 if (!(*cgen)((ast_expression*)(self->entity), func, false, &ent))
1229 cgen = self->field->expression.codegen;
1230 if (!(*cgen)((ast_expression*)(self->field), func, false, &field))
1235 *out = ir_block_create_fieldaddress(func->curblock, ast_function_label(func, "efa"),
1238 *out = ir_block_create_load_from_ent(func->curblock, ast_function_label(func, "efv"),
1239 ent, field, self->expression.vtype);
1242 asterror(ast_ctx(self), "failed to create %s instruction (output type %s)",
1243 (lvalue ? "ADDRESS" : "FIELD"),
1244 type_name[self->expression.vtype]);
1249 self->expression.outl = *out;
1251 self->expression.outr = *out;
1253 /* Hm that should be it... */
1257 bool ast_member_codegen(ast_member *self, ast_function *func, bool lvalue, ir_value **out)
1259 ast_expression_codegen *cgen;
1262 /* in QC this is always an lvalue */
1264 if (self->expression.outl) {
1265 *out = self->expression.outl;
1269 cgen = self->owner->expression.codegen;
1270 if (!(*cgen)((ast_expression*)(self->owner), func, true, &vec))
1273 if (vec->vtype != TYPE_VECTOR &&
1274 !(vec->vtype == TYPE_FIELD && self->owner->expression.next->expression.vtype == TYPE_VECTOR))
1279 *out = ir_value_vector_member(vec, self->field);
1280 self->expression.outl = *out;
1282 return (*out != NULL);
1285 bool ast_ifthen_codegen(ast_ifthen *self, ast_function *func, bool lvalue, ir_value **out)
1287 ast_expression_codegen *cgen;
1292 ir_block *cond = func->curblock;
1295 ir_block *ontrue_endblock;
1296 ir_block *onfalse_endblock;
1299 /* We don't output any value, thus also don't care about r/lvalue */
1303 if (self->expression.outr) {
1304 asterror(ast_ctx(self), "internal error: ast_ifthen cannot be reused, it bears no result!");
1307 self->expression.outr = (ir_value*)1;
1309 /* generate the condition */
1310 func->curblock = cond;
1311 cgen = self->cond->expression.codegen;
1312 if (!(*cgen)((ast_expression*)(self->cond), func, false, &condval))
1317 if (self->on_true) {
1318 /* create on-true block */
1319 ontrue = ir_function_create_block(func->ir_func, ast_function_label(func, "ontrue"));
1323 /* enter the block */
1324 func->curblock = ontrue;
1327 cgen = self->on_true->expression.codegen;
1328 if (!(*cgen)((ast_expression*)(self->on_true), func, false, &dummy))
1331 /* we now need to work from the current endpoint */
1332 ontrue_endblock = func->curblock;
1337 if (self->on_false) {
1338 /* create on-false block */
1339 onfalse = ir_function_create_block(func->ir_func, ast_function_label(func, "onfalse"));
1343 /* enter the block */
1344 func->curblock = onfalse;
1347 cgen = self->on_false->expression.codegen;
1348 if (!(*cgen)((ast_expression*)(self->on_false), func, false, &dummy))
1351 /* we now need to work from the current endpoint */
1352 onfalse_endblock = func->curblock;
1356 /* Merge block were they all merge in to */
1357 merge = ir_function_create_block(func->ir_func, ast_function_label(func, "endif"));
1361 /* add jumps ot the merge block */
1362 if (ontrue && !ontrue_endblock->final && !ir_block_create_jump(ontrue_endblock, merge))
1364 if (onfalse && !onfalse_endblock->final && !ir_block_create_jump(onfalse_endblock, merge))
1367 /* we create the if here, that way all blocks are ordered :)
1369 if (!ir_block_create_if(cond, condval,
1370 (ontrue ? ontrue : merge),
1371 (onfalse ? onfalse : merge)))
1376 /* Now enter the merge block */
1377 func->curblock = merge;
1382 bool ast_ternary_codegen(ast_ternary *self, ast_function *func, bool lvalue, ir_value **out)
1384 ast_expression_codegen *cgen;
1387 ir_value *trueval, *falseval;
1390 ir_block *cond = func->curblock;
1395 /* Ternary can never create an lvalue... */
1399 /* In theory it shouldn't be possible to pass through a node twice, but
1400 * in case we add any kind of optimization pass for the AST itself, it
1401 * may still happen, thus we remember a created ir_value and simply return one
1402 * if it already exists.
1404 if (self->phi_out) {
1405 *out = self->phi_out;
1409 /* In the following, contraty to ast_ifthen, we assume both paths exist. */
1411 /* generate the condition */
1412 func->curblock = cond;
1413 cgen = self->cond->expression.codegen;
1414 if (!(*cgen)((ast_expression*)(self->cond), func, false, &condval))
1417 /* create on-true block */
1418 ontrue = ir_function_create_block(func->ir_func, ast_function_label(func, "tern_T"));
1423 /* enter the block */
1424 func->curblock = ontrue;
1427 cgen = self->on_true->expression.codegen;
1428 if (!(*cgen)((ast_expression*)(self->on_true), func, false, &trueval))
1432 /* create on-false block */
1433 onfalse = ir_function_create_block(func->ir_func, ast_function_label(func, "tern_F"));
1438 /* enter the block */
1439 func->curblock = onfalse;
1442 cgen = self->on_false->expression.codegen;
1443 if (!(*cgen)((ast_expression*)(self->on_false), func, false, &falseval))
1447 /* create merge block */
1448 merge = ir_function_create_block(func->ir_func, ast_function_label(func, "tern_out"));
1451 /* jump to merge block */
1452 if (!ir_block_create_jump(ontrue, merge))
1454 if (!ir_block_create_jump(onfalse, merge))
1457 /* create if instruction */
1458 if (!ir_block_create_if(cond, condval, ontrue, onfalse))
1461 /* Now enter the merge block */
1462 func->curblock = merge;
1464 /* Here, now, we need a PHI node
1465 * but first some sanity checking...
1467 if (trueval->vtype != falseval->vtype) {
1468 /* error("ternary with different types on the two sides"); */
1473 phi = ir_block_create_phi(merge, ast_function_label(func, "phi"), trueval->vtype);
1475 !ir_phi_add(phi, ontrue, trueval) ||
1476 !ir_phi_add(phi, onfalse, falseval))
1481 self->phi_out = ir_phi_value(phi);
1482 *out = self->phi_out;
1487 bool ast_loop_codegen(ast_loop *self, ast_function *func, bool lvalue, ir_value **out)
1489 ast_expression_codegen *cgen;
1491 ir_value *dummy = NULL;
1492 ir_value *precond = NULL;
1493 ir_value *postcond = NULL;
1495 /* Since we insert some jumps "late" so we have blocks
1496 * ordered "nicely", we need to keep track of the actual end-blocks
1497 * of expressions to add the jumps to.
1499 ir_block *bbody = NULL, *end_bbody = NULL;
1500 ir_block *bprecond = NULL, *end_bprecond = NULL;
1501 ir_block *bpostcond = NULL, *end_bpostcond = NULL;
1502 ir_block *bincrement = NULL, *end_bincrement = NULL;
1503 ir_block *bout = NULL, *bin = NULL;
1505 /* let's at least move the outgoing block to the end */
1508 /* 'break' and 'continue' need to be able to find the right blocks */
1509 ir_block *bcontinue = NULL;
1510 ir_block *bbreak = NULL;
1512 ir_block *old_bcontinue = NULL;
1513 ir_block *old_bbreak = NULL;
1515 ir_block *tmpblock = NULL;
1520 if (self->expression.outr) {
1521 asterror(ast_ctx(self), "internal error: ast_loop cannot be reused, it bears no result!");
1524 self->expression.outr = (ir_value*)1;
1527 * Should we ever need some kind of block ordering, better make this function
1528 * move blocks around than write a block ordering algorithm later... after all
1529 * the ast and ir should work together, not against each other.
1532 /* initexpr doesn't get its own block, it's pointless, it could create more blocks
1533 * anyway if for example it contains a ternary.
1537 cgen = self->initexpr->expression.codegen;
1538 if (!(*cgen)((ast_expression*)(self->initexpr), func, false, &dummy))
1542 /* Store the block from which we enter this chaos */
1543 bin = func->curblock;
1545 /* The pre-loop condition needs its own block since we
1546 * need to be able to jump to the start of that expression.
1550 bprecond = ir_function_create_block(func->ir_func, ast_function_label(func, "pre_loop_cond"));
1554 /* the pre-loop-condition the least important place to 'continue' at */
1555 bcontinue = bprecond;
1558 func->curblock = bprecond;
1561 cgen = self->precond->expression.codegen;
1562 if (!(*cgen)((ast_expression*)(self->precond), func, false, &precond))
1565 end_bprecond = func->curblock;
1567 bprecond = end_bprecond = NULL;
1570 /* Now the next blocks won't be ordered nicely, but we need to
1571 * generate them this early for 'break' and 'continue'.
1573 if (self->increment) {
1574 bincrement = ir_function_create_block(func->ir_func, ast_function_label(func, "loop_increment"));
1577 bcontinue = bincrement; /* increment comes before the pre-loop-condition */
1579 bincrement = end_bincrement = NULL;
1582 if (self->postcond) {
1583 bpostcond = ir_function_create_block(func->ir_func, ast_function_label(func, "post_loop_cond"));
1586 bcontinue = bpostcond; /* postcond comes before the increment */
1588 bpostcond = end_bpostcond = NULL;
1591 bout_id = func->ir_func->blocks_count;
1592 bout = ir_function_create_block(func->ir_func, ast_function_label(func, "after_loop"));
1597 /* The loop body... */
1600 bbody = ir_function_create_block(func->ir_func, ast_function_label(func, "loop_body"));
1605 func->curblock = bbody;
1607 old_bbreak = func->breakblock;
1608 old_bcontinue = func->continueblock;
1609 func->breakblock = bbreak;
1610 func->continueblock = bcontinue;
1613 cgen = self->body->expression.codegen;
1614 if (!(*cgen)((ast_expression*)(self->body), func, false, &dummy))
1617 end_bbody = func->curblock;
1618 func->breakblock = old_bbreak;
1619 func->continueblock = old_bcontinue;
1622 /* post-loop-condition */
1626 func->curblock = bpostcond;
1629 cgen = self->postcond->expression.codegen;
1630 if (!(*cgen)((ast_expression*)(self->postcond), func, false, &postcond))
1633 end_bpostcond = func->curblock;
1636 /* The incrementor */
1637 if (self->increment)
1640 func->curblock = bincrement;
1643 cgen = self->increment->expression.codegen;
1644 if (!(*cgen)((ast_expression*)(self->increment), func, false, &dummy))
1647 end_bincrement = func->curblock;
1650 /* In any case now, we continue from the outgoing block */
1651 func->curblock = bout;
1653 /* Now all blocks are in place */
1654 /* From 'bin' we jump to whatever comes first */
1655 if (bprecond) tmpblock = bprecond;
1656 else if (bbody) tmpblock = bbody;
1657 else if (bpostcond) tmpblock = bpostcond;
1658 else tmpblock = bout;
1659 if (!ir_block_create_jump(bin, tmpblock))
1665 ir_block *ontrue, *onfalse;
1666 if (bbody) ontrue = bbody;
1667 else if (bincrement) ontrue = bincrement;
1668 else if (bpostcond) ontrue = bpostcond;
1669 else ontrue = bprecond;
1671 if (!ir_block_create_if(end_bprecond, precond, ontrue, onfalse))
1678 if (bincrement) tmpblock = bincrement;
1679 else if (bpostcond) tmpblock = bpostcond;
1680 else if (bprecond) tmpblock = bprecond;
1681 else tmpblock = bout;
1682 if (!end_bbody->final && !ir_block_create_jump(end_bbody, tmpblock))
1686 /* from increment */
1689 if (bpostcond) tmpblock = bpostcond;
1690 else if (bprecond) tmpblock = bprecond;
1691 else if (bbody) tmpblock = bbody;
1692 else tmpblock = bout;
1693 if (!ir_block_create_jump(end_bincrement, tmpblock))
1700 ir_block *ontrue, *onfalse;
1701 if (bprecond) ontrue = bprecond;
1702 else if (bbody) ontrue = bbody;
1703 else if (bincrement) ontrue = bincrement;
1704 else ontrue = bpostcond;
1706 if (!ir_block_create_if(end_bpostcond, postcond, ontrue, onfalse))
1710 /* Move 'bout' to the end */
1711 if (!ir_function_blocks_remove(func->ir_func, bout_id) ||
1712 !ir_function_blocks_add(func->ir_func, bout))
1714 ir_block_delete(bout);
1721 bool ast_call_codegen(ast_call *self, ast_function *func, bool lvalue, ir_value **out)
1723 ast_expression_codegen *cgen;
1724 ir_value_vector params;
1725 ir_instr *callinstr;
1728 ir_value *funval = NULL;
1730 /* return values are never lvalues */
1733 if (self->expression.outr) {
1734 *out = self->expression.outr;
1738 cgen = self->func->expression.codegen;
1739 if (!(*cgen)((ast_expression*)(self->func), func, false, &funval))
1744 MEM_VECTOR_INIT(¶ms, v);
1747 for (i = 0; i < self->params_count; ++i)
1750 ast_expression *expr = self->params[i];
1752 cgen = expr->expression.codegen;
1753 if (!(*cgen)(expr, func, false, ¶m))
1757 if (!ir_value_vector_v_add(¶ms, param))
1761 callinstr = ir_block_create_call(func->curblock, ast_function_label(func, "call"), funval);
1765 for (i = 0; i < params.v_count; ++i) {
1766 if (!ir_call_param(callinstr, params.v[i]))
1770 *out = ir_call_value(callinstr);
1771 self->expression.outr = *out;
1773 MEM_VECTOR_CLEAR(¶ms, v);
1776 MEM_VECTOR_CLEAR(¶ms, v);