6 #define PARSER_HT_LOCALS 2
7 #define PARSER_HT_SIZE 512
8 #define TYPEDEF_HT_SIZE 512
10 static void parser_enterblock(parser_t *parser);
11 static bool parser_leaveblock(parser_t *parser);
12 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
13 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e);
14 static bool parse_typedef(parser_t *parser);
15 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool is_static, uint32_t qflags, char *vstring);
16 static ast_block* parse_block(parser_t *parser);
17 static bool parse_block_into(parser_t *parser, ast_block *block);
18 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
19 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
20 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
21 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
22 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname);
23 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname);
24 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef, bool *is_vararg);
26 static void parseerror(parser_t *parser, const char *fmt, ...)
30 vcompile_error(parser->lex->tok.ctx, fmt, ap);
34 /* returns true if it counts as an error */
35 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
40 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
45 /**********************************************************************
49 static bool parser_next(parser_t *parser)
51 /* lex_do kills the previous token */
52 parser->tok = lex_do(parser->lex);
53 if (parser->tok == TOKEN_EOF)
55 if (parser->tok >= TOKEN_ERROR) {
56 parseerror(parser, "lex error");
62 #define parser_tokval(p) ((p)->lex->tok.value)
63 #define parser_token(p) (&((p)->lex->tok))
65 char *parser_strdup(const char *str)
68 /* actually dup empty strings */
69 char *out = (char*)mem_a(1);
73 return util_strdup(str);
76 static ast_expression* parser_find_field(parser_t *parser, const char *name)
78 return ( ast_expression*)util_htget(parser->htfields, name);
81 static ast_expression* parser_find_label(parser_t *parser, const char *name)
83 for (auto &it : parser->labels)
84 if (!strcmp(it->name, name))
85 return (ast_expression*)it;
89 ast_expression* parser_find_global(parser_t *parser, const char *name)
91 ast_expression *var = (ast_expression*)util_htget(parser->aliases, parser_tokval(parser));
94 return (ast_expression*)util_htget(parser->htglobals, name);
97 static ast_expression* parser_find_param(parser_t *parser, const char *name)
100 if (!parser->function)
102 fun = parser->function->vtype;
103 for (auto &it : fun->expression.params) {
104 if (!strcmp(it->name, name))
105 return (ast_expression*)it;
110 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
115 hash = util_hthash(parser->htglobals, name);
118 for (i = vec_size(parser->variables); i > upto;) {
120 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
124 return parser_find_param(parser, name);
127 static ast_expression* parser_find_var(parser_t *parser, const char *name)
131 v = parser_find_local(parser, name, 0, &dummy);
132 if (!v) v = parser_find_global(parser, name);
136 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
140 hash = util_hthash(parser->typedefs[0], name);
142 for (i = vec_size(parser->typedefs); i > upto;) {
144 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
151 size_t etype; /* 0 = expression, others are operators */
155 ast_block *block; /* for commas and function calls */
168 std::vector<sy_elem> out;
169 std::vector<sy_elem> ops;
170 std::vector<size_t> argc;
171 std::vector<unsigned int> paren;
174 static sy_elem syexp(lex_ctx_t ctx, ast_expression *v) {
185 static sy_elem syblock(lex_ctx_t ctx, ast_block *v) {
189 e.out = (ast_expression*)v;
196 static sy_elem syop(lex_ctx_t ctx, const oper_info *op) {
198 e.etype = 1 + (op - operators);
207 static sy_elem syparen(lex_ctx_t ctx, size_t off) {
218 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
219 * so we need to rotate it to become ent.(foo[n]).
221 static bool rotate_entfield_array_index_nodes(ast_expression **out)
223 ast_array_index *index, *oldindex;
224 ast_entfield *entfield;
228 ast_expression *entity;
230 lex_ctx_t ctx = ast_ctx(*out);
232 if (!ast_istype(*out, ast_array_index))
234 index = (ast_array_index*)*out;
236 if (!ast_istype(index->array, ast_entfield))
238 entfield = (ast_entfield*)index->array;
240 if (!ast_istype(entfield->field, ast_value))
242 field = (ast_value*)entfield->field;
245 entity = entfield->entity;
249 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
250 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
251 *out = (ast_expression*)entfield;
253 oldindex->array = NULL;
254 oldindex->index = NULL;
255 ast_delete(oldindex);
260 static bool check_write_to(lex_ctx_t ctx, ast_expression *expr)
262 if (ast_istype(expr, ast_value)) {
263 ast_value *val = (ast_value*)expr;
264 if (val->cvq == CV_CONST) {
265 if (val->name[0] == '#') {
266 compile_error(ctx, "invalid assignment to a literal constant");
270 * To work around quakeworld we must elide the error and make it
273 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_QCC)
274 compile_error(ctx, "assignment to constant `%s`", val->name);
276 (void)!compile_warning(ctx, WARN_CONST_OVERWRITE, "assignment to constant `%s`", val->name);
283 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
287 ast_expression *out = NULL;
288 ast_expression *exprs[3];
289 ast_block *blocks[3];
290 ast_binstore *asbinstore;
291 size_t i, assignop, addop, subop;
292 qcint_t generated_op = 0;
297 if (sy->ops.empty()) {
298 parseerror(parser, "internal error: missing operator");
302 if (sy->ops.back().isparen) {
303 parseerror(parser, "unmatched parenthesis");
307 op = &operators[sy->ops.back().etype - 1];
308 ctx = sy->ops.back().ctx;
310 if (sy->out.size() < op->operands) {
311 if (op->flags & OP_PREFIX)
312 compile_error(ctx, "expected expression after unary operator `%s`", op->op, (int)op->id);
313 else /* this should have errored previously already */
314 compile_error(ctx, "expected expression after operator `%s`", op->op, (int)op->id);
320 /* op(:?) has no input and no output */
324 sy->out.erase(sy->out.end() - op->operands, sy->out.end());
325 for (i = 0; i < op->operands; ++i) {
326 exprs[i] = sy->out[sy->out.size()+i].out;
327 blocks[i] = sy->out[sy->out.size()+i].block;
329 if (exprs[i]->vtype == TYPE_NOEXPR &&
330 !(i != 0 && op->id == opid2('?',':')) &&
331 !(i == 1 && op->id == opid1('.')))
333 if (ast_istype(exprs[i], ast_label))
334 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
336 compile_error(ast_ctx(exprs[i]), "not an expression");
337 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
341 if (blocks[0] && blocks[0]->exprs.empty() && op->id != opid1(',')) {
342 compile_error(ctx, "internal error: operator cannot be applied on empty blocks");
346 #define NotSameType(T) \
347 (exprs[0]->vtype != exprs[1]->vtype || \
348 exprs[0]->vtype != T)
353 compile_error(ctx, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
357 if (exprs[0]->vtype == TYPE_VECTOR &&
358 exprs[1]->vtype == TYPE_NOEXPR)
360 if (exprs[1] == (ast_expression*)parser->const_vec[0])
361 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
362 else if (exprs[1] == (ast_expression*)parser->const_vec[1])
363 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
364 else if (exprs[1] == (ast_expression*)parser->const_vec[2])
365 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
367 compile_error(ctx, "access to invalid vector component");
371 else if (exprs[0]->vtype == TYPE_ENTITY) {
372 if (exprs[1]->vtype != TYPE_FIELD) {
373 compile_error(ast_ctx(exprs[1]), "type error: right hand of member-operand should be an entity-field");
376 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
378 else if (exprs[0]->vtype == TYPE_VECTOR) {
379 compile_error(ast_ctx(exprs[1]), "vectors cannot be accessed this way");
383 compile_error(ast_ctx(exprs[1]), "type error: member-of operator on something that is not an entity or vector");
389 if (exprs[0]->vtype != TYPE_ARRAY &&
390 !(exprs[0]->vtype == TYPE_FIELD &&
391 exprs[0]->next->vtype == TYPE_ARRAY))
393 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
394 compile_error(ast_ctx(exprs[0]), "cannot index value of type %s", ty1);
397 if (exprs[1]->vtype != TYPE_FLOAT) {
398 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
399 compile_error(ast_ctx(exprs[1]), "index must be of type float, not %s", ty1);
402 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
403 rotate_entfield_array_index_nodes(&out);
407 if (sy->paren.size() && sy->paren.back() == PAREN_FUNC) {
408 sy->out.push_back(syexp(ctx, exprs[0]));
409 sy->out.push_back(syexp(ctx, exprs[1]));
414 if (!ast_block_add_expr(blocks[0], exprs[1]))
417 blocks[0] = ast_block_new(ctx);
418 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
419 !ast_block_add_expr(blocks[0], exprs[1]))
424 ast_block_set_type(blocks[0], exprs[1]);
426 sy->out.push_back(syblock(ctx, blocks[0]));
433 if ((out = fold_op(parser->fold, op, exprs)))
436 if (exprs[0]->vtype != TYPE_FLOAT &&
437 exprs[0]->vtype != TYPE_VECTOR) {
438 compile_error(ctx, "invalid types used in unary expression: cannot negate type %s",
439 type_name[exprs[0]->vtype]);
442 if (exprs[0]->vtype == TYPE_FLOAT)
443 out = (ast_expression*)ast_unary_new(ctx, VINSTR_NEG_F, exprs[0]);
445 out = (ast_expression*)ast_unary_new(ctx, VINSTR_NEG_V, exprs[0]);
449 if (!(out = fold_op(parser->fold, op, exprs))) {
450 switch (exprs[0]->vtype) {
452 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
455 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
458 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
459 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
461 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
463 /* we don't constant-fold NOT for these types */
465 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
468 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
471 compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
472 type_name[exprs[0]->vtype]);
479 if (exprs[0]->vtype != exprs[1]->vtype ||
480 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
482 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
483 type_name[exprs[0]->vtype],
484 type_name[exprs[1]->vtype]);
487 if (!(out = fold_op(parser->fold, op, exprs))) {
488 switch (exprs[0]->vtype) {
490 out = fold_binary(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
493 out = fold_binary(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
496 compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
497 type_name[exprs[0]->vtype],
498 type_name[exprs[1]->vtype]);
504 if (exprs[0]->vtype != exprs[1]->vtype ||
505 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT))
507 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
508 type_name[exprs[1]->vtype],
509 type_name[exprs[0]->vtype]);
512 if (!(out = fold_op(parser->fold, op, exprs))) {
513 switch (exprs[0]->vtype) {
515 out = fold_binary(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
518 out = fold_binary(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
521 compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
522 type_name[exprs[1]->vtype],
523 type_name[exprs[0]->vtype]);
529 if (exprs[0]->vtype != exprs[1]->vtype &&
530 !(exprs[0]->vtype == TYPE_VECTOR &&
531 exprs[1]->vtype == TYPE_FLOAT) &&
532 !(exprs[1]->vtype == TYPE_VECTOR &&
533 exprs[0]->vtype == TYPE_FLOAT)
536 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
537 type_name[exprs[1]->vtype],
538 type_name[exprs[0]->vtype]);
541 if (!(out = fold_op(parser->fold, op, exprs))) {
542 switch (exprs[0]->vtype) {
544 if (exprs[1]->vtype == TYPE_VECTOR)
545 out = fold_binary(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
547 out = fold_binary(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
550 if (exprs[1]->vtype == TYPE_FLOAT)
551 out = fold_binary(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
553 out = fold_binary(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
556 compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
557 type_name[exprs[1]->vtype],
558 type_name[exprs[0]->vtype]);
565 if (exprs[1]->vtype != TYPE_FLOAT) {
566 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
567 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
568 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
571 if (!(out = fold_op(parser->fold, op, exprs))) {
572 if (exprs[0]->vtype == TYPE_FLOAT)
573 out = fold_binary(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
575 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
576 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
577 compile_error(ctx, "invalid types used in expression: cannot divide types %s and %s", ty1, ty2);
584 if (NotSameType(TYPE_FLOAT)) {
585 compile_error(ctx, "invalid types used in expression: cannot perform modulo operation between types %s and %s",
586 type_name[exprs[0]->vtype],
587 type_name[exprs[1]->vtype]);
589 } else if (!(out = fold_op(parser->fold, op, exprs))) {
590 /* generate a call to __builtin_mod */
591 ast_expression *mod = intrin_func(parser->intrin, "mod");
592 ast_call *call = NULL;
593 if (!mod) return false; /* can return null for missing floor */
595 call = ast_call_new(parser_ctx(parser), mod);
596 call->params.push_back(exprs[0]);
597 call->params.push_back(exprs[1]);
599 out = (ast_expression*)call;
604 compile_error(ctx, "%= is unimplemented");
610 if ( !(exprs[0]->vtype == TYPE_FLOAT && exprs[1]->vtype == TYPE_FLOAT) &&
611 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_FLOAT) &&
612 !(exprs[0]->vtype == TYPE_VECTOR && exprs[1]->vtype == TYPE_VECTOR))
614 compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
615 type_name[exprs[0]->vtype],
616 type_name[exprs[1]->vtype]);
620 if (!(out = fold_op(parser->fold, op, exprs))) {
622 * IF the first expression is float, the following will be too
623 * since scalar ^ vector is not allowed.
625 if (exprs[0]->vtype == TYPE_FLOAT) {
626 out = fold_binary(ctx,
627 (op->id == opid1('^') ? VINSTR_BITXOR : op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
631 * The first is a vector: vector is allowed to bitop with vector and
632 * with scalar, branch here for the second operand.
634 if (exprs[1]->vtype == TYPE_VECTOR) {
636 * Bitop all the values of the vector components against the
637 * vectors components in question.
639 out = fold_binary(ctx,
640 (op->id == opid1('^') ? VINSTR_BITXOR_V : op->id == opid1('|') ? VINSTR_BITOR_V : VINSTR_BITAND_V),
643 out = fold_binary(ctx,
644 (op->id == opid1('^') ? VINSTR_BITXOR_VF : op->id == opid1('|') ? VINSTR_BITOR_VF : VINSTR_BITAND_VF),
653 if (NotSameType(TYPE_FLOAT)) {
654 compile_error(ctx, "invalid types used in expression: cannot perform shift between types %s and %s",
655 type_name[exprs[0]->vtype],
656 type_name[exprs[1]->vtype]);
660 if (!(out = fold_op(parser->fold, op, exprs))) {
661 ast_expression *shift = intrin_func(parser->intrin, (op->id == opid2('<','<')) ? "__builtin_lshift" : "__builtin_rshift");
662 ast_call *call = ast_call_new(parser_ctx(parser), shift);
663 call->params.push_back(exprs[0]);
664 call->params.push_back(exprs[1]);
665 out = (ast_expression*)call;
669 case opid3('<','<','='):
670 case opid3('>','>','='):
671 if (NotSameType(TYPE_FLOAT)) {
672 compile_error(ctx, "invalid types used in expression: cannot perform shift operation between types %s and %s",
673 type_name[exprs[0]->vtype],
674 type_name[exprs[1]->vtype]);
678 if(!(out = fold_op(parser->fold, op, exprs))) {
679 ast_expression *shift = intrin_func(parser->intrin, (op->id == opid3('<','<','=')) ? "__builtin_lshift" : "__builtin_rshift");
680 ast_call *call = ast_call_new(parser_ctx(parser), shift);
681 call->params.push_back(exprs[0]);
682 call->params.push_back(exprs[1]);
683 out = (ast_expression*)ast_store_new(
687 (ast_expression*)call
694 generated_op += 1; /* INSTR_OR */
696 generated_op += INSTR_AND;
697 if (!(out = fold_op(parser->fold, op, exprs))) {
698 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
699 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
700 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
701 compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
704 for (i = 0; i < 2; ++i) {
705 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->vtype == TYPE_VECTOR) {
706 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
708 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
710 exprs[i] = out; out = NULL;
711 if (OPTS_FLAG(PERL_LOGIC)) {
712 /* here we want to keep the right expressions' type */
716 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->vtype == TYPE_STRING) {
717 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
719 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
721 exprs[i] = out; out = NULL;
722 if (OPTS_FLAG(PERL_LOGIC)) {
723 /* here we want to keep the right expressions' type */
728 out = fold_binary(ctx, generated_op, exprs[0], exprs[1]);
733 if (sy->paren.back() != PAREN_TERNARY2) {
734 compile_error(ctx, "mismatched parenthesis/ternary");
737 sy->paren.pop_back();
738 if (!ast_compare_type(exprs[1], exprs[2])) {
739 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
740 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
741 compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
744 if (!(out = fold_op(parser->fold, op, exprs)))
745 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
748 case opid2('*', '*'):
749 if (NotSameType(TYPE_FLOAT)) {
750 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
751 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
752 compile_error(ctx, "invalid types used in exponentiation: %s and %s",
757 if (!(out = fold_op(parser->fold, op, exprs))) {
758 ast_call *gencall = ast_call_new(parser_ctx(parser), intrin_func(parser->intrin, "pow"));
759 gencall->params.push_back(exprs[0]);
760 gencall->params.push_back(exprs[1]);
761 out = (ast_expression*)gencall;
765 case opid2('>', '<'):
766 if (NotSameType(TYPE_VECTOR)) {
767 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
768 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
769 compile_error(ctx, "invalid types used in cross product: %s and %s",
774 if (!(out = fold_op(parser->fold, op, exprs))) {
785 case opid3('<','=','>'): /* -1, 0, or 1 */
786 if (NotSameType(TYPE_FLOAT)) {
787 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
788 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
789 compile_error(ctx, "invalid types used in comparision: %s and %s",
795 if (!(out = fold_op(parser->fold, op, exprs))) {
796 /* This whole block is NOT fold_binary safe */
797 ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
799 eq->refs = AST_REF_NONE;
802 out = (ast_expression*)ast_ternary_new(ctx,
803 (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
805 (ast_expression*)parser->fold->imm_float[2],
808 (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
810 (ast_expression*)parser->fold->imm_float[0],
813 (ast_expression*)parser->fold->imm_float[1]
823 generated_op += 1; /* INSTR_GT */
825 generated_op += 1; /* INSTR_LT */
826 case opid2('>', '='):
827 generated_op += 1; /* INSTR_GE */
828 case opid2('<', '='):
829 generated_op += INSTR_LE;
830 if (NotSameType(TYPE_FLOAT)) {
831 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
832 type_name[exprs[0]->vtype],
833 type_name[exprs[1]->vtype]);
836 if (!(out = fold_op(parser->fold, op, exprs)))
837 out = fold_binary(ctx, generated_op, exprs[0], exprs[1]);
839 case opid2('!', '='):
840 if (exprs[0]->vtype != exprs[1]->vtype) {
841 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
842 type_name[exprs[0]->vtype],
843 type_name[exprs[1]->vtype]);
846 if (!(out = fold_op(parser->fold, op, exprs)))
847 out = fold_binary(ctx, type_ne_instr[exprs[0]->vtype], exprs[0], exprs[1]);
849 case opid2('=', '='):
850 if (exprs[0]->vtype != exprs[1]->vtype) {
851 compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
852 type_name[exprs[0]->vtype],
853 type_name[exprs[1]->vtype]);
856 if (!(out = fold_op(parser->fold, op, exprs)))
857 out = fold_binary(ctx, type_eq_instr[exprs[0]->vtype], exprs[0], exprs[1]);
861 if (ast_istype(exprs[0], ast_entfield)) {
862 ast_expression *field = ((ast_entfield*)exprs[0])->field;
863 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
864 exprs[0]->vtype == TYPE_FIELD &&
865 exprs[0]->next->vtype == TYPE_VECTOR)
867 assignop = type_storep_instr[TYPE_VECTOR];
870 assignop = type_storep_instr[exprs[0]->vtype];
871 if (assignop == VINSTR_END || !ast_compare_type(field->next, exprs[1]))
873 ast_type_to_string(field->next, ty1, sizeof(ty1));
874 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
875 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
876 field->next->vtype == TYPE_FUNCTION &&
877 exprs[1]->vtype == TYPE_FUNCTION)
879 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
880 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
883 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
888 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
889 exprs[0]->vtype == TYPE_FIELD &&
890 exprs[0]->next->vtype == TYPE_VECTOR)
892 assignop = type_store_instr[TYPE_VECTOR];
895 assignop = type_store_instr[exprs[0]->vtype];
898 if (assignop == VINSTR_END) {
899 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
900 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
901 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
903 else if (!ast_compare_type(exprs[0], exprs[1]))
905 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
906 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
907 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
908 exprs[0]->vtype == TYPE_FUNCTION &&
909 exprs[1]->vtype == TYPE_FUNCTION)
911 (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
912 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
915 compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
918 (void)check_write_to(ctx, exprs[0]);
919 /* When we're a vector of part of an entity field we use STOREP */
920 if (ast_istype(exprs[0], ast_member) && ast_istype(((ast_member*)exprs[0])->owner, ast_entfield))
921 assignop = INSTR_STOREP_F;
922 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
924 case opid3('+','+','P'):
925 case opid3('-','-','P'):
927 if (exprs[0]->vtype != TYPE_FLOAT) {
928 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
929 compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
932 if (op->id == opid3('+','+','P'))
936 (void)check_write_to(ast_ctx(exprs[0]), exprs[0]);
937 if (ast_istype(exprs[0], ast_entfield)) {
938 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
940 (ast_expression*)parser->fold->imm_float[1]);
942 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
944 (ast_expression*)parser->fold->imm_float[1]);
947 case opid3('S','+','+'):
948 case opid3('S','-','-'):
950 if (exprs[0]->vtype != TYPE_FLOAT) {
951 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
952 compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
955 if (op->id == opid3('S','+','+')) {
962 (void)check_write_to(ast_ctx(exprs[0]), exprs[0]);
963 if (ast_istype(exprs[0], ast_entfield)) {
964 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
966 (ast_expression*)parser->fold->imm_float[1]);
968 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
970 (ast_expression*)parser->fold->imm_float[1]);
974 out = fold_binary(ctx, subop,
976 (ast_expression*)parser->fold->imm_float[1]);
981 if (exprs[0]->vtype != exprs[1]->vtype ||
982 (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
984 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
985 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
986 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
990 (void)check_write_to(ctx, exprs[0]);
991 if (ast_istype(exprs[0], ast_entfield))
992 assignop = type_storep_instr[exprs[0]->vtype];
994 assignop = type_store_instr[exprs[0]->vtype];
995 switch (exprs[0]->vtype) {
997 out = (ast_expression*)ast_binstore_new(ctx, assignop,
998 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1002 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1003 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1004 exprs[0], exprs[1]);
1007 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1008 type_name[exprs[0]->vtype],
1009 type_name[exprs[1]->vtype]);
1013 case opid2('*','='):
1014 case opid2('/','='):
1015 if (exprs[1]->vtype != TYPE_FLOAT ||
1016 !(exprs[0]->vtype == TYPE_FLOAT ||
1017 exprs[0]->vtype == TYPE_VECTOR))
1019 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1020 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1021 compile_error(ctx, "invalid types used in expression: %s and %s",
1025 (void)check_write_to(ctx, exprs[0]);
1026 if (ast_istype(exprs[0], ast_entfield))
1027 assignop = type_storep_instr[exprs[0]->vtype];
1029 assignop = type_store_instr[exprs[0]->vtype];
1030 switch (exprs[0]->vtype) {
1032 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1033 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1034 exprs[0], exprs[1]);
1037 if (op->id == opid2('*','=')) {
1038 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1039 exprs[0], exprs[1]);
1041 out = fold_binary(ctx, INSTR_DIV_F,
1042 (ast_expression*)parser->fold->imm_float[1],
1045 compile_error(ctx, "internal error: failed to generate division");
1048 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1053 compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
1054 type_name[exprs[0]->vtype],
1055 type_name[exprs[1]->vtype]);
1059 case opid2('&','='):
1060 case opid2('|','='):
1061 case opid2('^','='):
1062 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1063 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1064 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1065 compile_error(ctx, "invalid types used in expression: %s and %s",
1069 (void)check_write_to(ctx, exprs[0]);
1070 if (ast_istype(exprs[0], ast_entfield))
1071 assignop = type_storep_instr[exprs[0]->vtype];
1073 assignop = type_store_instr[exprs[0]->vtype];
1074 if (exprs[0]->vtype == TYPE_FLOAT)
1075 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1076 (op->id == opid2('^','=') ? VINSTR_BITXOR : op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1077 exprs[0], exprs[1]);
1079 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1080 (op->id == opid2('^','=') ? VINSTR_BITXOR_V : op->id == opid2('&','=') ? VINSTR_BITAND_V : VINSTR_BITOR_V),
1081 exprs[0], exprs[1]);
1083 case opid3('&','~','='):
1084 /* This is like: a &= ~(b);
1085 * But QC has no bitwise-not, so we implement it as
1088 if (NotSameType(TYPE_FLOAT) && NotSameType(TYPE_VECTOR)) {
1089 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1090 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1091 compile_error(ctx, "invalid types used in expression: %s and %s",
1095 if (ast_istype(exprs[0], ast_entfield))
1096 assignop = type_storep_instr[exprs[0]->vtype];
1098 assignop = type_store_instr[exprs[0]->vtype];
1099 if (exprs[0]->vtype == TYPE_FLOAT)
1100 out = fold_binary(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1102 out = fold_binary(ctx, VINSTR_BITAND_V, exprs[0], exprs[1]);
1105 (void)check_write_to(ctx, exprs[0]);
1106 if (exprs[0]->vtype == TYPE_FLOAT)
1107 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1109 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_V, exprs[0], out);
1110 asbinstore->keep_dest = true;
1111 out = (ast_expression*)asbinstore;
1114 case opid3('l', 'e', 'n'):
1115 if (exprs[0]->vtype != TYPE_STRING && exprs[0]->vtype != TYPE_ARRAY) {
1116 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1117 compile_error(ast_ctx(exprs[0]), "invalid type for length operator: %s", ty1);
1120 /* strings must be const, arrays are statically sized */
1121 if (exprs[0]->vtype == TYPE_STRING &&
1122 !(((ast_value*)exprs[0])->hasvalue && ((ast_value*)exprs[0])->cvq == CV_CONST))
1124 compile_error(ast_ctx(exprs[0]), "operand of length operator not a valid constant expression");
1127 out = fold_op(parser->fold, op, exprs);
1130 case opid2('~', 'P'):
1131 if (exprs[0]->vtype != TYPE_FLOAT && exprs[0]->vtype != TYPE_VECTOR) {
1132 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1133 compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
1136 if (!(out = fold_op(parser->fold, op, exprs))) {
1137 if (exprs[0]->vtype == TYPE_FLOAT) {
1138 out = fold_binary(ctx, INSTR_SUB_F, (ast_expression*)parser->fold->imm_float[2], exprs[0]);
1140 out = fold_binary(ctx, INSTR_SUB_V, (ast_expression*)parser->fold->imm_vector[1], exprs[0]);
1147 compile_error(ctx, "failed to apply operator %s", op->op);
1151 sy->out.push_back(syexp(ctx, out));
1155 static bool parser_close_call(parser_t *parser, shunt *sy)
1157 /* was a function call */
1158 ast_expression *fun;
1159 ast_value *funval = NULL;
1163 size_t paramcount, i;
1166 fid = sy->ops.back().off;
1169 /* out[fid] is the function
1170 * everything above is parameters...
1172 if (sy->argc.empty()) {
1173 parseerror(parser, "internal error: no argument counter available");
1177 paramcount = sy->argc.back();
1178 sy->argc.pop_back();
1180 if (sy->out.size() < fid) {
1181 parseerror(parser, "internal error: broken function call %zu < %zu+%zu\n",
1189 * TODO handle this at the intrinsic level with an ast_intrinsic
1192 if ((fun = sy->out[fid].out) == intrin_debug_typestring(parser->intrin)) {
1194 if (fid+2 != sy->out.size() || sy->out.back().block) {
1195 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1198 ast_type_to_string(sy->out.back().out, ty, sizeof(ty));
1199 ast_unref(sy->out.back().out);
1200 sy->out[fid] = syexp(ast_ctx(sy->out.back().out),
1201 (ast_expression*)fold_constgen_string(parser->fold, ty, false));
1207 * Now we need to determine if the function that is being called is
1208 * an intrinsic so we can evaluate if the arguments to it are constant
1209 * and than fruitfully fold them.
1211 #define fold_can_1(X) \
1212 (ast_istype(((ast_expression*)(X)), ast_value) && (X)->hasvalue && ((X)->cvq == CV_CONST) && \
1213 ((ast_expression*)(X))->vtype != TYPE_FUNCTION)
1215 if (fid + 1 < sy->out.size())
1218 for (i = 0; i < paramcount; ++i) {
1219 if (!fold_can_1((ast_value*)sy->out[fid + 1 + i].out)) {
1226 * All is well which ends well, if we make it into here we can ignore the
1227 * intrinsic call and just evaluate it i.e constant fold it.
1229 if (fold && ast_istype(fun, ast_value) && ((ast_value*)fun)->intrinsic) {
1230 ast_expression **exprs = NULL;
1231 ast_expression *foldval = NULL;
1233 for (i = 0; i < paramcount; i++)
1234 vec_push(exprs, sy->out[fid+1 + i].out);
1236 if (!(foldval = intrin_fold(parser->intrin, (ast_value*)fun, exprs))) {
1242 * Blub: what sorts of unreffing and resizing of
1243 * sy->out should I be doing here?
1245 sy->out[fid] = syexp(foldval->node.context, foldval);
1246 sy->out.erase(sy->out.end() - paramcount, sy->out.end());
1253 call = ast_call_new(sy->ops[sy->ops.size()].ctx, fun);
1258 if (fid+1 + paramcount != sy->out.size()) {
1259 parseerror(parser, "internal error: parameter count mismatch: (%zu+1+%zu), %zu",
1266 for (i = 0; i < paramcount; ++i)
1267 call->params.push_back(sy->out[fid+1 + i].out);
1268 sy->out.erase(sy->out.end() - paramcount, sy->out.end());
1269 (void)!ast_call_check_types(call, parser->function->vtype->expression.varparam);
1270 if (parser->max_param_count < paramcount)
1271 parser->max_param_count = paramcount;
1273 if (ast_istype(fun, ast_value)) {
1274 funval = (ast_value*)fun;
1275 if ((fun->flags & AST_FLAG_VARIADIC) &&
1276 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1278 call->va_count = (ast_expression*)fold_constgen_float(parser->fold, (qcfloat_t)paramcount, false);
1282 /* overwrite fid, the function, with a call */
1283 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1285 if (fun->vtype != TYPE_FUNCTION) {
1286 parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
1291 parseerror(parser, "could not determine function return type");
1294 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1296 if (fun->flags & AST_FLAG_DEPRECATED) {
1298 return !parsewarning(parser, WARN_DEPRECATED,
1299 "call to function (which is marked deprecated)\n",
1300 "-> it has been declared here: %s:%i",
1301 ast_ctx(fun).file, ast_ctx(fun).line);
1304 return !parsewarning(parser, WARN_DEPRECATED,
1305 "call to `%s` (which is marked deprecated)\n"
1306 "-> `%s` declared here: %s:%i",
1307 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1309 return !parsewarning(parser, WARN_DEPRECATED,
1310 "call to `%s` (deprecated: %s)\n"
1311 "-> `%s` declared here: %s:%i",
1312 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1316 if (fun->params.size() != paramcount &&
1317 !((fun->flags & AST_FLAG_VARIADIC) &&
1318 fun->params.size() < paramcount))
1320 const char *fewmany = (fun->params.size() > paramcount) ? "few" : "many";
1322 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1323 "too %s parameters for call to %s: expected %i, got %i\n"
1324 " -> `%s` has been declared here: %s:%i",
1325 fewmany, fval->name, (int)fun->params.size(), (int)paramcount,
1326 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1328 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1329 "too %s parameters for function call: expected %i, got %i\n"
1330 " -> it has been declared here: %s:%i",
1331 fewmany, (int)fun->params.size(), (int)paramcount,
1332 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1339 static bool parser_close_paren(parser_t *parser, shunt *sy)
1341 if (sy->ops.empty()) {
1342 parseerror(parser, "unmatched closing paren");
1346 while (sy->ops.size()) {
1347 if (sy->ops.back().isparen) {
1348 if (sy->paren.back() == PAREN_FUNC) {
1349 sy->paren.pop_back();
1350 if (!parser_close_call(parser, sy))
1354 if (sy->paren.back() == PAREN_EXPR) {
1355 sy->paren.pop_back();
1356 if (sy->out.empty()) {
1357 compile_error(sy->ops.back().ctx, "empty paren expression");
1364 if (sy->paren.back() == PAREN_INDEX) {
1365 sy->paren.pop_back();
1366 // pop off the parenthesis
1368 /* then apply the index operator */
1369 if (!parser_sy_apply_operator(parser, sy))
1373 if (sy->paren.back() == PAREN_TERNARY1) {
1374 sy->paren.back() = PAREN_TERNARY2;
1375 // pop off the parenthesis
1379 compile_error(sy->ops.back().ctx, "invalid parenthesis");
1382 if (!parser_sy_apply_operator(parser, sy))
1388 static void parser_reclassify_token(parser_t *parser)
1391 if (parser->tok >= TOKEN_START)
1393 for (i = 0; i < operator_count; ++i) {
1394 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1395 parser->tok = TOKEN_OPERATOR;
1401 static ast_expression* parse_vararg_do(parser_t *parser)
1403 ast_expression *idx, *out;
1405 ast_value *funtype = parser->function->vtype;
1406 lex_ctx_t ctx = parser_ctx(parser);
1408 if (!parser->function->varargs) {
1409 parseerror(parser, "function has no variable argument list");
1413 if (!parser_next(parser) || parser->tok != '(') {
1414 parseerror(parser, "expected parameter index and type in parenthesis");
1417 if (!parser_next(parser)) {
1418 parseerror(parser, "error parsing parameter index");
1422 idx = parse_expression_leave(parser, true, false, false);
1426 if (parser->tok != ',') {
1427 if (parser->tok != ')') {
1429 parseerror(parser, "expected comma after parameter index");
1432 /* vararg piping: ...(start) */
1433 out = (ast_expression*)ast_argpipe_new(ctx, idx);
1437 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1439 parseerror(parser, "expected typename for vararg");
1443 typevar = parse_typename(parser, NULL, NULL, NULL);
1449 if (parser->tok != ')') {
1451 ast_delete(typevar);
1452 parseerror(parser, "expected closing paren");
1456 if (funtype->expression.varparam &&
1457 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1461 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1462 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1463 compile_error(ast_ctx(typevar),
1464 "function was declared to take varargs of type `%s`, requested type is: %s",
1468 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1469 ast_type_adopt(out, typevar);
1470 ast_delete(typevar);
1474 static ast_expression* parse_vararg(parser_t *parser)
1476 bool old_noops = parser->lex->flags.noops;
1478 ast_expression *out;
1480 parser->lex->flags.noops = true;
1481 out = parse_vararg_do(parser);
1483 parser->lex->flags.noops = old_noops;
1487 /* not to be exposed */
1488 bool ftepp_predef_exists(const char *name);
1489 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1491 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1492 parser->tok == TOKEN_IDENT &&
1493 !strcmp(parser_tokval(parser), "_"))
1495 /* a translatable string */
1498 parser->lex->flags.noops = true;
1499 if (!parser_next(parser) || parser->tok != '(') {
1500 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1503 parser->lex->flags.noops = false;
1504 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1505 parseerror(parser, "expected a constant string in translatable-string extension");
1508 val = (ast_value*)fold_constgen_string(parser->fold, parser_tokval(parser), true);
1511 sy->out.push_back(syexp(parser_ctx(parser), (ast_expression*)val));
1513 if (!parser_next(parser) || parser->tok != ')') {
1514 parseerror(parser, "expected closing paren after translatable string");
1519 else if (parser->tok == TOKEN_DOTS)
1522 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1523 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1526 va = parse_vararg(parser);
1529 sy->out.push_back(syexp(parser_ctx(parser), va));
1532 else if (parser->tok == TOKEN_FLOATCONST) {
1533 ast_expression *val = fold_constgen_float(parser->fold, (parser_token(parser)->constval.f), false);
1536 sy->out.push_back(syexp(parser_ctx(parser), val));
1539 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1540 ast_expression *val = fold_constgen_float(parser->fold, (qcfloat_t)(parser_token(parser)->constval.i), false);
1543 sy->out.push_back(syexp(parser_ctx(parser), val));
1546 else if (parser->tok == TOKEN_STRINGCONST) {
1547 ast_expression *val = fold_constgen_string(parser->fold, parser_tokval(parser), false);
1550 sy->out.push_back(syexp(parser_ctx(parser), val));
1553 else if (parser->tok == TOKEN_VECTORCONST) {
1554 ast_expression *val = fold_constgen_vector(parser->fold, parser_token(parser)->constval.v);
1557 sy->out.push_back(syexp(parser_ctx(parser), val));
1560 else if (parser->tok == TOKEN_IDENT)
1562 const char *ctoken = parser_tokval(parser);
1563 ast_expression *prev = sy->out.size() ? sy->out.back().out : NULL;
1564 ast_expression *var;
1565 /* a_vector.{x,y,z} */
1566 if (sy->ops.empty() ||
1567 !sy->ops.back().etype ||
1568 operators[sy->ops.back().etype-1].id != opid1('.'))
1570 /* When adding more intrinsics, fix the above condition */
1573 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1575 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1577 var = parser_find_var(parser, parser_tokval(parser));
1579 var = parser_find_field(parser, parser_tokval(parser));
1581 if (!var && with_labels) {
1582 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1584 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1585 var = (ast_expression*)lbl;
1586 parser->labels.push_back(lbl);
1589 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
1590 var = (ast_expression*)fold_constgen_string(parser->fold, parser->function->name, false);
1593 * now we try for the real intrinsic hashtable. If the string
1594 * begins with __builtin, we simply skip past it, otherwise we
1595 * use the identifier as is.
1597 if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
1598 var = intrin_func(parser->intrin, parser_tokval(parser));
1602 * Try it again, intrin_func deals with the alias method as well
1603 * the first one masks for __builtin though, we emit warning here.
1606 if ((var = intrin_func(parser->intrin, parser_tokval(parser)))) {
1607 (void)!compile_warning(
1610 "using implicitly defined builtin `__builtin_%s' for `%s'",
1611 parser_tokval(parser),
1612 parser_tokval(parser)
1620 * sometimes people use preprocessing predefs without enabling them
1621 * i've done this thousands of times already myself. Lets check for
1622 * it in the predef table. And diagnose it better :)
1624 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
1625 parseerror(parser, "unexpected identifier: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1629 parseerror(parser, "unexpected identifier: %s", parser_tokval(parser));
1635 if (ast_istype(var, ast_value)) {
1636 ((ast_value*)var)->uses++;
1638 else if (ast_istype(var, ast_member)) {
1639 ast_member *mem = (ast_member*)var;
1640 if (ast_istype(mem->owner, ast_value))
1641 ((ast_value*)(mem->owner))->uses++;
1644 sy->out.push_back(syexp(parser_ctx(parser), var));
1647 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1651 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1653 ast_expression *expr = NULL;
1655 bool wantop = false;
1656 /* only warn once about an assignment in a truth value because the current code
1657 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1659 bool warn_parenthesis = true;
1661 /* count the parens because an if starts with one, so the
1662 * end of a condition is an unmatched closing paren
1666 memset(&sy, 0, sizeof(sy));
1668 parser->lex->flags.noops = false;
1670 parser_reclassify_token(parser);
1674 if (parser->tok == TOKEN_TYPENAME) {
1675 parseerror(parser, "unexpected typename `%s`", parser_tokval(parser));
1679 if (parser->tok == TOKEN_OPERATOR)
1681 /* classify the operator */
1682 const oper_info *op;
1683 const oper_info *olast = NULL;
1685 for (o = 0; o < operator_count; ++o) {
1686 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1687 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1688 !strcmp(parser_tokval(parser), operators[o].op))
1693 if (o == operator_count) {
1694 compile_error(parser_ctx(parser), "unexpected operator: %s", parser_tokval(parser));
1697 /* found an operator */
1700 /* when declaring variables, a comma starts a new variable */
1701 if (op->id == opid1(',') && sy.paren.empty() && stopatcomma) {
1702 /* fixup the token */
1707 /* a colon without a pervious question mark cannot be a ternary */
1708 if (!ternaries && op->id == opid2(':','?')) {
1713 if (op->id == opid1(',')) {
1714 if (sy.paren.size() && sy.paren.back() == PAREN_TERNARY2) {
1715 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1719 if (sy.ops.size() && !sy.ops.back().isparen)
1720 olast = &operators[sy.ops.back().etype-1];
1722 /* first only apply higher precedences, assoc_left+equal comes after we warn about precedence rules */
1723 while (olast && op->prec < olast->prec)
1725 if (!parser_sy_apply_operator(parser, &sy))
1727 if (sy.ops.size() && !sy.ops.back().isparen)
1728 olast = &operators[sy.ops.back().etype-1];
1733 #define IsAssignOp(x) (\
1734 (x) == opid1('=') || \
1735 (x) == opid2('+','=') || \
1736 (x) == opid2('-','=') || \
1737 (x) == opid2('*','=') || \
1738 (x) == opid2('/','=') || \
1739 (x) == opid2('%','=') || \
1740 (x) == opid2('&','=') || \
1741 (x) == opid2('|','=') || \
1742 (x) == opid3('&','~','=') \
1744 if (warn_parenthesis) {
1745 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1746 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1747 (truthvalue && sy.paren.empty() && IsAssignOp(op->id))
1750 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1751 warn_parenthesis = false;
1754 if (olast && olast->id != op->id) {
1755 if ((op->id == opid1('&') || op->id == opid1('|') || op->id == opid1('^')) &&
1756 (olast->id == opid1('&') || olast->id == opid1('|') || olast->id == opid1('^')))
1758 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around bitwise operations");
1759 warn_parenthesis = false;
1761 else if ((op->id == opid2('&','&') || op->id == opid2('|','|')) &&
1762 (olast->id == opid2('&','&') || olast->id == opid2('|','|')))
1764 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around logical operations");
1765 warn_parenthesis = false;
1771 (op->prec < olast->prec) ||
1772 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1774 if (!parser_sy_apply_operator(parser, &sy))
1776 if (sy.ops.size() && !sy.ops.back().isparen)
1777 olast = &operators[sy.ops.back().etype-1];
1782 if (op->id == opid1('(')) {
1784 size_t sycount = sy.out.size();
1785 /* we expected an operator, this is the function-call operator */
1786 sy.paren.push_back(PAREN_FUNC);
1787 sy.ops.push_back(syparen(parser_ctx(parser), sycount-1));
1788 sy.argc.push_back(0);
1790 sy.paren.push_back(PAREN_EXPR);
1791 sy.ops.push_back(syparen(parser_ctx(parser), 0));
1794 } else if (op->id == opid1('[')) {
1796 parseerror(parser, "unexpected array subscript");
1799 sy.paren.push_back(PAREN_INDEX);
1800 /* push both the operator and the paren, this makes life easier */
1801 sy.ops.push_back(syop(parser_ctx(parser), op));
1802 sy.ops.push_back(syparen(parser_ctx(parser), 0));
1804 } else if (op->id == opid2('?',':')) {
1805 sy.ops.push_back(syop(parser_ctx(parser), op));
1806 sy.ops.push_back(syparen(parser_ctx(parser), 0));
1809 sy.paren.push_back(PAREN_TERNARY1);
1810 } else if (op->id == opid2(':','?')) {
1811 if (sy.paren.empty()) {
1812 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1815 if (sy.paren.back() != PAREN_TERNARY1) {
1816 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1819 if (!parser_close_paren(parser, &sy))
1821 sy.ops.push_back(syop(parser_ctx(parser), op));
1825 sy.ops.push_back(syop(parser_ctx(parser), op));
1826 wantop = !!(op->flags & OP_SUFFIX);
1829 else if (parser->tok == ')') {
1830 while (sy.paren.size() && sy.paren.back() == PAREN_TERNARY2) {
1831 if (!parser_sy_apply_operator(parser, &sy))
1834 if (sy.paren.empty())
1837 if (sy.paren.back() == PAREN_TERNARY1) {
1838 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
1841 if (!parser_close_paren(parser, &sy))
1844 /* must be a function call without parameters */
1845 if (sy.paren.back() != PAREN_FUNC) {
1846 parseerror(parser, "closing paren in invalid position");
1849 if (!parser_close_paren(parser, &sy))
1854 else if (parser->tok == '(') {
1855 parseerror(parser, "internal error: '(' should be classified as operator");
1858 else if (parser->tok == '[') {
1859 parseerror(parser, "internal error: '[' should be classified as operator");
1862 else if (parser->tok == ']') {
1863 while (sy.paren.size() && sy.paren.back() == PAREN_TERNARY2) {
1864 if (!parser_sy_apply_operator(parser, &sy))
1867 if (sy.paren.empty())
1869 if (sy.paren.back() != PAREN_INDEX) {
1870 parseerror(parser, "mismatched parentheses, unexpected ']'");
1873 if (!parser_close_paren(parser, &sy))
1878 if (!parse_sya_operand(parser, &sy, with_labels))
1883 /* in this case we might want to allow constant string concatenation */
1884 bool concatenated = false;
1885 if (parser->tok == TOKEN_STRINGCONST && sy.out.size()) {
1886 ast_expression *lexpr = sy.out.back().out;
1887 if (ast_istype(lexpr, ast_value)) {
1888 ast_value *last = (ast_value*)lexpr;
1889 if (last->isimm == true && last->cvq == CV_CONST &&
1890 last->hasvalue && last->expression.vtype == TYPE_STRING)
1892 char *newstr = NULL;
1893 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
1894 sy.out.back().out = (ast_expression*)fold_constgen_string(parser->fold, newstr, false);
1896 concatenated = true;
1900 if (!concatenated) {
1901 parseerror(parser, "expected operator or end of statement");
1906 if (!parser_next(parser)) {
1909 if (parser->tok == ';' ||
1910 ((sy.paren.empty() || (sy.paren.size() == 1 && sy.paren.back() == PAREN_TERNARY2)) &&
1911 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
1917 while (sy.ops.size()) {
1918 if (!parser_sy_apply_operator(parser, &sy))
1922 parser->lex->flags.noops = true;
1923 if (sy.out.size() != 1) {
1924 parseerror(parser, "expression expected");
1927 expr = sy.out[0].out;
1928 if (sy.paren.size()) {
1929 parseerror(parser, "internal error: sy.paren.size() = %zu", sy.paren.size());
1935 parser->lex->flags.noops = true;
1936 for (auto &it : sy.out)
1937 if (it.out) ast_unref(it.out);
1941 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
1943 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
1946 if (parser->tok != ';') {
1947 parseerror(parser, "semicolon expected after expression");
1951 if (!parser_next(parser)) {
1958 static void parser_enterblock(parser_t *parser)
1960 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1961 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1962 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1963 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1964 vec_push(parser->_block_ctx, parser_ctx(parser));
1967 static bool parser_leaveblock(parser_t *parser)
1970 size_t locals, typedefs;
1972 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1973 parseerror(parser, "internal error: parser_leaveblock with no block");
1977 util_htdel(vec_last(parser->variables));
1979 vec_pop(parser->variables);
1980 if (!vec_size(parser->_blocklocals)) {
1981 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1985 locals = vec_last(parser->_blocklocals);
1986 vec_pop(parser->_blocklocals);
1987 while (vec_size(parser->_locals) != locals) {
1988 ast_expression *e = vec_last(parser->_locals);
1989 ast_value *v = (ast_value*)e;
1990 vec_pop(parser->_locals);
1991 if (ast_istype(e, ast_value) && !v->uses) {
1992 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
1997 typedefs = vec_last(parser->_blocktypedefs);
1998 while (vec_size(parser->_typedefs) != typedefs) {
1999 ast_delete(vec_last(parser->_typedefs));
2000 vec_pop(parser->_typedefs);
2002 util_htdel(vec_last(parser->typedefs));
2003 vec_pop(parser->typedefs);
2005 vec_pop(parser->_block_ctx);
2010 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2012 vec_push(parser->_locals, e);
2013 util_htset(vec_last(parser->variables), name, (void*)e);
2016 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2018 parser->globals.push_back(e);
2019 util_htset(parser->htglobals, name, e);
2022 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2026 ast_expression *prev;
2028 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2030 ast_type_to_string(cond, ty, sizeof(ty));
2031 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2034 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2037 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2040 parseerror(parser, "internal error: failed to process condition");
2045 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2047 /* vector types need to be cast to true booleans */
2048 ast_binary *bin = (ast_binary*)cond;
2049 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2051 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2053 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2056 parseerror(parser, "internal error: failed to process condition");
2063 unary = (ast_unary*)cond;
2064 /* ast_istype dereferences cond, should test here for safety */
2065 while (cond && ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2067 cond = unary->operand;
2068 unary->operand = NULL;
2071 unary = (ast_unary*)cond;
2075 parseerror(parser, "internal error: failed to process condition");
2077 if (ifnot) *_ifnot = !*_ifnot;
2081 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2084 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2087 lex_ctx_t ctx = parser_ctx(parser);
2089 (void)block; /* not touching */
2091 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2092 if (!parser_next(parser)) {
2093 parseerror(parser, "expected condition or 'not'");
2096 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2098 if (!parser_next(parser)) {
2099 parseerror(parser, "expected condition in parenthesis");
2103 if (parser->tok != '(') {
2104 parseerror(parser, "expected 'if' condition in parenthesis");
2107 /* parse into the expression */
2108 if (!parser_next(parser)) {
2109 parseerror(parser, "expected 'if' condition after opening paren");
2112 /* parse the condition */
2113 cond = parse_expression_leave(parser, false, true, false);
2117 if (parser->tok != ')') {
2118 parseerror(parser, "expected closing paren after 'if' condition");
2122 /* parse into the 'then' branch */
2123 if (!parser_next(parser)) {
2124 parseerror(parser, "expected statement for on-true branch of 'if'");
2128 if (!parse_statement_or_block(parser, &ontrue)) {
2133 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2134 /* check for an else */
2135 if (!strcmp(parser_tokval(parser), "else")) {
2136 /* parse into the 'else' branch */
2137 if (!parser_next(parser)) {
2138 parseerror(parser, "expected on-false branch after 'else'");
2143 if (!parse_statement_or_block(parser, &onfalse)) {
2150 cond = process_condition(parser, cond, &ifnot);
2152 if (ontrue) ast_delete(ontrue);
2153 if (onfalse) ast_delete(onfalse);
2158 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2160 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2161 *out = (ast_expression*)ifthen;
2165 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2166 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2171 /* skip the 'while' and get the body */
2172 if (!parser_next(parser)) {
2173 if (OPTS_FLAG(LOOP_LABELS))
2174 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2176 parseerror(parser, "expected 'while' condition in parenthesis");
2180 if (parser->tok == ':') {
2181 if (!OPTS_FLAG(LOOP_LABELS))
2182 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2183 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2184 parseerror(parser, "expected loop label");
2187 label = util_strdup(parser_tokval(parser));
2188 if (!parser_next(parser)) {
2190 parseerror(parser, "expected 'while' condition in parenthesis");
2195 if (parser->tok != '(') {
2196 parseerror(parser, "expected 'while' condition in parenthesis");
2200 parser->breaks.push_back(label);
2201 parser->continues.push_back(label);
2203 rv = parse_while_go(parser, block, out);
2206 if (parser->breaks.back() != label || parser->continues.back() != label) {
2207 parseerror(parser, "internal error: label stack corrupted");
2213 parser->breaks.pop_back();
2214 parser->continues.pop_back();
2219 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2222 ast_expression *cond, *ontrue;
2226 lex_ctx_t ctx = parser_ctx(parser);
2228 (void)block; /* not touching */
2230 /* parse into the expression */
2231 if (!parser_next(parser)) {
2232 parseerror(parser, "expected 'while' condition after opening paren");
2235 /* parse the condition */
2236 cond = parse_expression_leave(parser, false, true, false);
2240 if (parser->tok != ')') {
2241 parseerror(parser, "expected closing paren after 'while' condition");
2245 /* parse into the 'then' branch */
2246 if (!parser_next(parser)) {
2247 parseerror(parser, "expected while-loop body");
2251 if (!parse_statement_or_block(parser, &ontrue)) {
2256 cond = process_condition(parser, cond, &ifnot);
2261 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2262 *out = (ast_expression*)aloop;
2266 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2267 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2272 /* skip the 'do' and get the body */
2273 if (!parser_next(parser)) {
2274 if (OPTS_FLAG(LOOP_LABELS))
2275 parseerror(parser, "expected loop label or body");
2277 parseerror(parser, "expected loop body");
2281 if (parser->tok == ':') {
2282 if (!OPTS_FLAG(LOOP_LABELS))
2283 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2284 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2285 parseerror(parser, "expected loop label");
2288 label = util_strdup(parser_tokval(parser));
2289 if (!parser_next(parser)) {
2291 parseerror(parser, "expected loop body");
2296 parser->breaks.push_back(label);
2297 parser->continues.push_back(label);
2299 rv = parse_dowhile_go(parser, block, out);
2302 if (parser->breaks.back() != label || parser->continues.back() != label) {
2303 parseerror(parser, "internal error: label stack corrupted");
2306 * Test for NULL otherwise ast_delete dereferences null pointer
2314 parser->breaks.pop_back();
2315 parser->continues.pop_back();
2320 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2323 ast_expression *cond, *ontrue;
2327 lex_ctx_t ctx = parser_ctx(parser);
2329 (void)block; /* not touching */
2331 if (!parse_statement_or_block(parser, &ontrue))
2334 /* expect the "while" */
2335 if (parser->tok != TOKEN_KEYWORD ||
2336 strcmp(parser_tokval(parser), "while"))
2338 parseerror(parser, "expected 'while' and condition");
2343 /* skip the 'while' and check for opening paren */
2344 if (!parser_next(parser) || parser->tok != '(') {
2345 parseerror(parser, "expected 'while' condition in parenthesis");
2349 /* parse into the expression */
2350 if (!parser_next(parser)) {
2351 parseerror(parser, "expected 'while' condition after opening paren");
2355 /* parse the condition */
2356 cond = parse_expression_leave(parser, false, true, false);
2360 if (parser->tok != ')') {
2361 parseerror(parser, "expected closing paren after 'while' condition");
2367 if (!parser_next(parser) || parser->tok != ';') {
2368 parseerror(parser, "expected semicolon after condition");
2374 if (!parser_next(parser)) {
2375 parseerror(parser, "parse error");
2381 cond = process_condition(parser, cond, &ifnot);
2386 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2387 *out = (ast_expression*)aloop;
2391 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2392 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2397 /* skip the 'for' and check for opening paren */
2398 if (!parser_next(parser)) {
2399 if (OPTS_FLAG(LOOP_LABELS))
2400 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2402 parseerror(parser, "expected 'for' expressions in parenthesis");
2406 if (parser->tok == ':') {
2407 if (!OPTS_FLAG(LOOP_LABELS))
2408 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2409 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2410 parseerror(parser, "expected loop label");
2413 label = util_strdup(parser_tokval(parser));
2414 if (!parser_next(parser)) {
2416 parseerror(parser, "expected 'for' expressions in parenthesis");
2421 if (parser->tok != '(') {
2422 parseerror(parser, "expected 'for' expressions in parenthesis");
2426 parser->breaks.push_back(label);
2427 parser->continues.push_back(label);
2429 rv = parse_for_go(parser, block, out);
2432 if (parser->breaks.back() != label || parser->continues.back() != label) {
2433 parseerror(parser, "internal error: label stack corrupted");
2439 parser->breaks.pop_back();
2440 parser->continues.pop_back();
2444 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2447 ast_expression *initexpr, *cond, *increment, *ontrue;
2452 lex_ctx_t ctx = parser_ctx(parser);
2454 parser_enterblock(parser);
2461 /* parse into the expression */
2462 if (!parser_next(parser)) {
2463 parseerror(parser, "expected 'for' initializer after opening paren");
2468 if (parser->tok == TOKEN_IDENT)
2469 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2471 if (typevar || parser->tok == TOKEN_TYPENAME) {
2472 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2475 else if (parser->tok != ';')
2477 initexpr = parse_expression_leave(parser, false, false, false);
2481 /* move on to condition */
2482 if (parser->tok != ';') {
2483 parseerror(parser, "expected semicolon after for-loop initializer");
2487 if (!parser_next(parser)) {
2488 parseerror(parser, "expected for-loop condition");
2493 /* parse the condition */
2494 if (parser->tok != ';') {
2495 cond = parse_expression_leave(parser, false, true, false);
2500 /* move on to incrementor */
2501 if (parser->tok != ';') {
2502 parseerror(parser, "expected semicolon after for-loop initializer");
2505 if (!parser_next(parser)) {
2506 parseerror(parser, "expected for-loop condition");
2510 /* parse the incrementor */
2511 if (parser->tok != ')') {
2512 lex_ctx_t condctx = parser_ctx(parser);
2513 increment = parse_expression_leave(parser, false, false, false);
2516 if (!ast_side_effects(increment)) {
2517 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2523 if (parser->tok != ')') {
2524 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2527 /* parse into the 'then' branch */
2528 if (!parser_next(parser)) {
2529 parseerror(parser, "expected for-loop body");
2532 if (!parse_statement_or_block(parser, &ontrue))
2536 cond = process_condition(parser, cond, &ifnot);
2540 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2541 *out = (ast_expression*)aloop;
2543 if (!parser_leaveblock(parser)) {
2549 if (initexpr) ast_unref(initexpr);
2550 if (cond) ast_unref(cond);
2551 if (increment) ast_unref(increment);
2552 (void)!parser_leaveblock(parser);
2556 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2558 ast_expression *exp = NULL;
2559 ast_expression *var = NULL;
2560 ast_return *ret = NULL;
2561 ast_value *retval = parser->function->return_value;
2562 ast_value *expected = parser->function->vtype;
2564 lex_ctx_t ctx = parser_ctx(parser);
2566 (void)block; /* not touching */
2568 if (!parser_next(parser)) {
2569 parseerror(parser, "expected return expression");
2573 /* return assignments */
2574 if (parser->tok == '=') {
2575 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
2576 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
2580 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
2582 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
2583 parseerror(parser, "invalid return type: `%s'", ty1);
2587 if (!parser_next(parser)) {
2588 parseerror(parser, "expected return assignment expression");
2592 if (!(exp = parse_expression_leave(parser, false, false, false)))
2595 /* prepare the return value */
2597 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
2598 ast_type_adopt(retval, expected->expression.next);
2599 parser->function->return_value = retval;
2602 if (!ast_compare_type(exp, (ast_expression*)retval)) {
2603 char ty1[1024], ty2[1024];
2604 ast_type_to_string(exp, ty1, sizeof(ty1));
2605 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
2606 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
2609 /* store to 'return' local variable */
2610 var = (ast_expression*)ast_store_new(
2612 type_store_instr[expected->expression.next->vtype],
2613 (ast_expression*)retval, exp);
2620 if (parser->tok != ';')
2621 parseerror(parser, "missing semicolon after return assignment");
2622 else if (!parser_next(parser))
2623 parseerror(parser, "parse error after return assignment");
2629 if (parser->tok != ';') {
2630 exp = parse_expression(parser, false, false);
2634 if (exp->vtype != TYPE_NIL &&
2635 exp->vtype != ((ast_expression*)expected)->next->vtype)
2637 parseerror(parser, "return with invalid expression");
2640 ret = ast_return_new(ctx, exp);
2646 if (!parser_next(parser))
2647 parseerror(parser, "parse error");
2649 if (!retval && expected->expression.next->vtype != TYPE_VOID)
2651 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2653 ret = ast_return_new(ctx, (ast_expression*)retval);
2655 *out = (ast_expression*)ret;
2659 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2662 unsigned int levels = 0;
2663 lex_ctx_t ctx = parser_ctx(parser);
2664 auto &loops = (is_continue ? parser->continues : parser->breaks);
2666 (void)block; /* not touching */
2667 if (!parser_next(parser)) {
2668 parseerror(parser, "expected semicolon or loop label");
2672 if (loops.empty()) {
2674 parseerror(parser, "`continue` can only be used inside loops");
2676 parseerror(parser, "`break` can only be used inside loops or switches");
2679 if (parser->tok == TOKEN_IDENT) {
2680 if (!OPTS_FLAG(LOOP_LABELS))
2681 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2684 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2687 parseerror(parser, "no such loop to %s: `%s`",
2688 (is_continue ? "continue" : "break out of"),
2689 parser_tokval(parser));
2694 if (!parser_next(parser)) {
2695 parseerror(parser, "expected semicolon");
2700 if (parser->tok != ';') {
2701 parseerror(parser, "expected semicolon");
2705 if (!parser_next(parser))
2706 parseerror(parser, "parse error");
2708 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2712 /* returns true when it was a variable qualifier, false otherwise!
2713 * on error, cvq is set to CV_WRONG
2715 struct attribute_t {
2720 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2722 bool had_const = false;
2723 bool had_var = false;
2724 bool had_noref = false;
2725 bool had_attrib = false;
2726 bool had_static = false;
2729 static attribute_t attributes[] = {
2730 { "noreturn", AST_FLAG_NORETURN },
2731 { "inline", AST_FLAG_INLINE },
2732 { "eraseable", AST_FLAG_ERASEABLE },
2733 { "accumulate", AST_FLAG_ACCUMULATE },
2734 { "last", AST_FLAG_FINAL_DECL }
2741 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2743 /* parse an attribute */
2744 if (!parser_next(parser)) {
2745 parseerror(parser, "expected attribute after `[[`");
2750 for (i = 0; i < GMQCC_ARRAY_COUNT(attributes); i++) {
2751 if (!strcmp(parser_tokval(parser), attributes[i].name)) {
2752 flags |= attributes[i].flag;
2753 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2754 parseerror(parser, "`%s` attribute has no parameters, expected `]]`",
2755 attributes[i].name);
2763 if (i != GMQCC_ARRAY_COUNT(attributes))
2767 if (!strcmp(parser_tokval(parser), "noref")) {
2769 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2770 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2775 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
2776 flags |= AST_FLAG_ALIAS;
2779 if (!parser_next(parser)) {
2780 parseerror(parser, "parse error in attribute");
2784 if (parser->tok == '(') {
2785 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2786 parseerror(parser, "`alias` attribute missing parameter");
2790 *message = util_strdup(parser_tokval(parser));
2792 if (!parser_next(parser)) {
2793 parseerror(parser, "parse error in attribute");
2797 if (parser->tok != ')') {
2798 parseerror(parser, "`alias` attribute expected `)` after parameter");
2802 if (!parser_next(parser)) {
2803 parseerror(parser, "parse error in attribute");
2808 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2809 parseerror(parser, "`alias` attribute expected `]]`");
2813 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2814 flags |= AST_FLAG_DEPRECATED;
2817 if (!parser_next(parser)) {
2818 parseerror(parser, "parse error in attribute");
2822 if (parser->tok == '(') {
2823 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2824 parseerror(parser, "`deprecated` attribute missing parameter");
2828 *message = util_strdup(parser_tokval(parser));
2830 if (!parser_next(parser)) {
2831 parseerror(parser, "parse error in attribute");
2835 if(parser->tok != ')') {
2836 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2840 if (!parser_next(parser)) {
2841 parseerror(parser, "parse error in attribute");
2846 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2847 parseerror(parser, "`deprecated` attribute expected `]]`");
2850 if (*message) mem_d(*message);
2856 else if (!strcmp(parser_tokval(parser), "coverage") && !(flags & AST_FLAG_COVERAGE)) {
2857 flags |= AST_FLAG_COVERAGE;
2858 if (!parser_next(parser)) {
2860 parseerror(parser, "parse error in coverage attribute");
2864 if (parser->tok == '(') {
2865 if (!parser_next(parser)) {
2867 parseerror(parser, "invalid parameter for coverage() attribute\n"
2868 "valid are: block");
2872 if (parser->tok != ')') {
2874 if (parser->tok != TOKEN_IDENT)
2875 goto bad_coverage_arg;
2876 if (!strcmp(parser_tokval(parser), "block"))
2877 flags |= AST_FLAG_BLOCK_COVERAGE;
2878 else if (!strcmp(parser_tokval(parser), "none"))
2879 flags &= ~(AST_FLAG_COVERAGE_MASK);
2881 goto bad_coverage_arg;
2882 if (!parser_next(parser))
2883 goto error_in_coverage;
2884 if (parser->tok == ',') {
2885 if (!parser_next(parser))
2886 goto error_in_coverage;
2888 } while (parser->tok != ')');
2890 if (parser->tok != ')' || !parser_next(parser))
2891 goto error_in_coverage;
2893 /* without parameter [[coverage]] equals [[coverage(block)]] */
2894 flags |= AST_FLAG_BLOCK_COVERAGE;
2899 /* Skip tokens until we hit a ]] */
2900 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2901 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2902 if (!parser_next(parser)) {
2903 parseerror(parser, "error inside attribute");
2910 else if (with_local && !strcmp(parser_tokval(parser), "static"))
2912 else if (!strcmp(parser_tokval(parser), "const"))
2914 else if (!strcmp(parser_tokval(parser), "var"))
2916 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2918 else if (!strcmp(parser_tokval(parser), "noref"))
2920 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2927 if (!parser_next(parser))
2937 *is_static = had_static;
2941 parseerror(parser, "parse error after variable qualifier");
2946 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2947 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2952 /* skip the 'while' and get the body */
2953 if (!parser_next(parser)) {
2954 if (OPTS_FLAG(LOOP_LABELS))
2955 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2957 parseerror(parser, "expected 'switch' operand in parenthesis");
2961 if (parser->tok == ':') {
2962 if (!OPTS_FLAG(LOOP_LABELS))
2963 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2964 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2965 parseerror(parser, "expected loop label");
2968 label = util_strdup(parser_tokval(parser));
2969 if (!parser_next(parser)) {
2971 parseerror(parser, "expected 'switch' operand in parenthesis");
2976 if (parser->tok != '(') {
2977 parseerror(parser, "expected 'switch' operand in parenthesis");
2981 parser->breaks.push_back(label);
2983 rv = parse_switch_go(parser, block, out);
2986 if (parser->breaks.back() != label) {
2987 parseerror(parser, "internal error: label stack corrupted");
2993 parser->breaks.pop_back();
2998 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3000 ast_expression *operand;
3003 ast_switch *switchnode;
3004 ast_switch_case swcase;
3007 bool noref, is_static;
3008 uint32_t qflags = 0;
3010 lex_ctx_t ctx = parser_ctx(parser);
3012 (void)block; /* not touching */
3015 /* parse into the expression */
3016 if (!parser_next(parser)) {
3017 parseerror(parser, "expected switch operand");
3020 /* parse the operand */
3021 operand = parse_expression_leave(parser, false, false, false);
3025 switchnode = ast_switch_new(ctx, operand);
3028 if (parser->tok != ')') {
3029 ast_delete(switchnode);
3030 parseerror(parser, "expected closing paren after 'switch' operand");
3034 /* parse over the opening paren */
3035 if (!parser_next(parser) || parser->tok != '{') {
3036 ast_delete(switchnode);
3037 parseerror(parser, "expected list of cases");
3041 if (!parser_next(parser)) {
3042 ast_delete(switchnode);
3043 parseerror(parser, "expected 'case' or 'default'");
3047 /* new block; allow some variables to be declared here */
3048 parser_enterblock(parser);
3051 if (parser->tok == TOKEN_IDENT)
3052 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3053 if (typevar || parser->tok == TOKEN_TYPENAME) {
3054 if (!parse_variable(parser, block, true, CV_NONE, typevar, false, false, 0, NULL)) {
3055 ast_delete(switchnode);
3060 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3062 if (cvq == CV_WRONG) {
3063 ast_delete(switchnode);
3066 if (!parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, NULL)) {
3067 ast_delete(switchnode);
3076 while (parser->tok != '}') {
3077 ast_block *caseblock;
3079 if (!strcmp(parser_tokval(parser), "case")) {
3080 if (!parser_next(parser)) {
3081 ast_delete(switchnode);
3082 parseerror(parser, "expected expression for case");
3085 swcase.value = parse_expression_leave(parser, false, false, false);
3086 if (!swcase.value) {
3087 ast_delete(switchnode);
3088 parseerror(parser, "expected expression for case");
3091 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3092 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3093 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3099 else if (!strcmp(parser_tokval(parser), "default")) {
3100 swcase.value = NULL;
3101 if (!parser_next(parser)) {
3102 ast_delete(switchnode);
3103 parseerror(parser, "expected colon");
3108 ast_delete(switchnode);
3109 parseerror(parser, "expected 'case' or 'default'");
3113 /* Now the colon and body */
3114 if (parser->tok != ':') {
3115 if (swcase.value) ast_unref(swcase.value);
3116 ast_delete(switchnode);
3117 parseerror(parser, "expected colon");
3121 if (!parser_next(parser)) {
3122 if (swcase.value) ast_unref(swcase.value);
3123 ast_delete(switchnode);
3124 parseerror(parser, "expected statements or case");
3127 caseblock = ast_block_new(parser_ctx(parser));
3129 if (swcase.value) ast_unref(swcase.value);
3130 ast_delete(switchnode);
3133 swcase.code = (ast_expression*)caseblock;
3134 switchnode->cases.push_back(swcase);
3136 ast_expression *expr;
3137 if (parser->tok == '}')
3139 if (parser->tok == TOKEN_KEYWORD) {
3140 if (!strcmp(parser_tokval(parser), "case") ||
3141 !strcmp(parser_tokval(parser), "default"))
3146 if (!parse_statement(parser, caseblock, &expr, true)) {
3147 ast_delete(switchnode);
3152 if (!ast_block_add_expr(caseblock, expr)) {
3153 ast_delete(switchnode);
3159 parser_leaveblock(parser);
3162 if (parser->tok != '}') {
3163 ast_delete(switchnode);
3164 parseerror(parser, "expected closing paren of case list");
3167 if (!parser_next(parser)) {
3168 ast_delete(switchnode);
3169 parseerror(parser, "parse error after switch");
3172 *out = (ast_expression*)switchnode;
3176 /* parse computed goto sides */
3177 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3178 ast_expression *on_true;
3179 ast_expression *on_false;
3180 ast_expression *cond;
3185 if (ast_istype(*side, ast_ternary)) {
3186 ast_ternary *tern = (ast_ternary*)*side;
3187 on_true = parse_goto_computed(parser, &tern->on_true);
3188 on_false = parse_goto_computed(parser, &tern->on_false);
3190 if (!on_true || !on_false) {
3191 parseerror(parser, "expected label or expression in ternary");
3192 if (on_true) ast_unref(on_true);
3193 if (on_false) ast_unref(on_false);
3201 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3202 } else if (ast_istype(*side, ast_label)) {
3203 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3204 ast_goto_set_label(gt, ((ast_label*)*side));
3206 return (ast_expression*)gt;
3211 static bool parse_goto(parser_t *parser, ast_expression **out)
3213 ast_goto *gt = NULL;
3214 ast_expression *lbl;
3216 if (!parser_next(parser))
3219 if (parser->tok != TOKEN_IDENT) {
3220 ast_expression *expression;
3222 /* could be an expression i.e computed goto :-) */
3223 if (parser->tok != '(') {
3224 parseerror(parser, "expected label name after `goto`");
3228 /* failed to parse expression for goto */
3229 if (!(expression = parse_expression(parser, false, true)) ||
3230 !(*out = parse_goto_computed(parser, &expression))) {
3231 parseerror(parser, "invalid goto expression");
3233 ast_unref(expression);
3240 /* not computed goto */
3241 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3242 lbl = parser_find_label(parser, gt->name);
3244 if (!ast_istype(lbl, ast_label)) {
3245 parseerror(parser, "internal error: label is not an ast_label");
3249 ast_goto_set_label(gt, (ast_label*)lbl);
3252 parser->gotos.push_back(gt);
3254 if (!parser_next(parser) || parser->tok != ';') {
3255 parseerror(parser, "semicolon expected after goto label");
3258 if (!parser_next(parser)) {
3259 parseerror(parser, "parse error after goto");
3263 *out = (ast_expression*)gt;
3267 static bool parse_skipwhite(parser_t *parser)
3270 if (!parser_next(parser))
3272 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3273 return parser->tok < TOKEN_ERROR;
3276 static bool parse_eol(parser_t *parser)
3278 if (!parse_skipwhite(parser))
3280 return parser->tok == TOKEN_EOL;
3283 static bool parse_pragma_do(parser_t *parser)
3285 if (!parser_next(parser) ||
3286 parser->tok != TOKEN_IDENT ||
3287 strcmp(parser_tokval(parser), "pragma"))
3289 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3292 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3293 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3297 if (!strcmp(parser_tokval(parser), "noref")) {
3298 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3299 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3302 parser->noref = !!parser_token(parser)->constval.i;
3303 if (!parse_eol(parser)) {
3304 parseerror(parser, "parse error after `noref` pragma");
3310 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3313 while (!parse_eol(parser)) {
3314 parser_next(parser);
3323 static bool parse_pragma(parser_t *parser)
3326 parser->lex->flags.preprocessing = true;
3327 parser->lex->flags.mergelines = true;
3328 rv = parse_pragma_do(parser);
3329 if (parser->tok != TOKEN_EOL) {
3330 parseerror(parser, "junk after pragma");
3333 parser->lex->flags.preprocessing = false;
3334 parser->lex->flags.mergelines = false;
3335 if (!parser_next(parser)) {
3336 parseerror(parser, "parse error after pragma");
3342 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3344 bool noref, is_static;
3346 uint32_t qflags = 0;
3347 ast_value *typevar = NULL;
3348 char *vstring = NULL;
3352 if (parser->tok == TOKEN_IDENT)
3353 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3355 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.' || parser->tok == TOKEN_DOTS)
3357 /* local variable */
3359 parseerror(parser, "cannot declare a variable from here");
3362 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3363 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3366 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3370 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3372 if (cvq == CV_WRONG)
3374 return parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, vstring);
3376 else if (parser->tok == TOKEN_KEYWORD)
3378 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3383 if (!parser_next(parser)) {
3384 parseerror(parser, "parse error after __builtin_debug_printtype");
3388 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3390 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3391 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3392 if (!parser_next(parser)) {
3393 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3399 if (!parse_statement(parser, block, out, allow_cases))
3402 con_out("__builtin_debug_printtype: got no output node\n");
3405 ast_type_to_string(*out, ty, sizeof(ty));
3406 con_out("__builtin_debug_printtype: `%s`\n", ty);
3411 else if (!strcmp(parser_tokval(parser), "return"))
3413 return parse_return(parser, block, out);
3415 else if (!strcmp(parser_tokval(parser), "if"))
3417 return parse_if(parser, block, out);
3419 else if (!strcmp(parser_tokval(parser), "while"))
3421 return parse_while(parser, block, out);
3423 else if (!strcmp(parser_tokval(parser), "do"))
3425 return parse_dowhile(parser, block, out);
3427 else if (!strcmp(parser_tokval(parser), "for"))
3429 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3430 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3433 return parse_for(parser, block, out);
3435 else if (!strcmp(parser_tokval(parser), "break"))
3437 return parse_break_continue(parser, block, out, false);
3439 else if (!strcmp(parser_tokval(parser), "continue"))
3441 return parse_break_continue(parser, block, out, true);
3443 else if (!strcmp(parser_tokval(parser), "switch"))
3445 return parse_switch(parser, block, out);
3447 else if (!strcmp(parser_tokval(parser), "case") ||
3448 !strcmp(parser_tokval(parser), "default"))
3451 parseerror(parser, "unexpected 'case' label");
3456 else if (!strcmp(parser_tokval(parser), "goto"))
3458 return parse_goto(parser, out);
3460 else if (!strcmp(parser_tokval(parser), "typedef"))
3462 if (!parser_next(parser)) {
3463 parseerror(parser, "expected type definition after 'typedef'");
3466 return parse_typedef(parser);
3468 parseerror(parser, "Unexpected keyword: `%s'", parser_tokval(parser));
3471 else if (parser->tok == '{')
3474 inner = parse_block(parser);
3477 *out = (ast_expression*)inner;
3480 else if (parser->tok == ':')
3484 if (!parser_next(parser)) {
3485 parseerror(parser, "expected label name");
3488 if (parser->tok != TOKEN_IDENT) {
3489 parseerror(parser, "label must be an identifier");
3492 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3494 if (!label->undefined) {
3495 parseerror(parser, "label `%s` already defined", label->name);
3498 label->undefined = false;
3501 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3502 parser->labels.push_back(label);
3504 *out = (ast_expression*)label;
3505 if (!parser_next(parser)) {
3506 parseerror(parser, "parse error after label");
3509 for (i = 0; i < parser->gotos.size(); ++i) {
3510 if (!strcmp(parser->gotos[i]->name, label->name)) {
3511 ast_goto_set_label(parser->gotos[i], label);
3512 parser->gotos.erase(parser->gotos.begin() + i);
3518 else if (parser->tok == ';')
3520 if (!parser_next(parser)) {
3521 parseerror(parser, "parse error after empty statement");
3528 lex_ctx_t ctx = parser_ctx(parser);
3529 ast_expression *exp = parse_expression(parser, false, false);
3533 if (!ast_side_effects(exp)) {
3534 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3541 static bool parse_enum(parser_t *parser)
3544 bool reverse = false;
3546 ast_value **values = NULL;
3547 ast_value *var = NULL;
3550 ast_expression *old;
3552 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3553 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3557 /* enumeration attributes (can add more later) */
3558 if (parser->tok == ':') {
3559 if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
3560 parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
3565 if (!strcmp(parser_tokval(parser), "flag")) {
3569 else if (!strcmp(parser_tokval(parser), "reverse")) {
3573 parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
3577 if (!parser_next(parser) || parser->tok != '{') {
3578 parseerror(parser, "expected `{` after enum attribute ");
3584 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3585 if (parser->tok == '}') {
3586 /* allow an empty enum */
3589 parseerror(parser, "expected identifier or `}`");
3593 old = parser_find_field(parser, parser_tokval(parser));
3595 old = parser_find_global(parser, parser_tokval(parser));
3597 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3598 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3602 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3603 vec_push(values, var);
3604 var->cvq = CV_CONST;
3605 var->hasvalue = true;
3607 /* for flagged enumerations increment in POTs of TWO */
3608 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
3609 parser_addglobal(parser, var->name, (ast_expression*)var);
3611 if (!parser_next(parser)) {
3612 parseerror(parser, "expected `=`, `}` or comma after identifier");
3616 if (parser->tok == ',')
3618 if (parser->tok == '}')
3620 if (parser->tok != '=') {
3621 parseerror(parser, "expected `=`, `}` or comma after identifier");
3625 if (!parser_next(parser)) {
3626 parseerror(parser, "expected expression after `=`");
3630 /* We got a value! */
3631 old = parse_expression_leave(parser, true, false, false);
3632 asvalue = (ast_value*)old;
3633 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3634 compile_error(ast_ctx(var), "constant value or expression expected");
3637 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3639 if (parser->tok == '}')
3641 if (parser->tok != ',') {
3642 parseerror(parser, "expected `}` or comma after expression");
3647 /* patch them all (for reversed attribute) */
3650 for (i = 0; i < vec_size(values); i++)
3651 values[i]->constval.vfloat = vec_size(values) - i - 1;
3654 if (parser->tok != '}') {
3655 parseerror(parser, "internal error: breaking without `}`");
3659 if (!parser_next(parser) || parser->tok != ';') {
3660 parseerror(parser, "expected semicolon after enumeration");
3664 if (!parser_next(parser)) {
3665 parseerror(parser, "parse error after enumeration");
3677 static bool parse_block_into(parser_t *parser, ast_block *block)
3681 parser_enterblock(parser);
3683 if (!parser_next(parser)) { /* skip the '{' */
3684 parseerror(parser, "expected function body");
3688 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3690 ast_expression *expr = NULL;
3691 if (parser->tok == '}')
3694 if (!parse_statement(parser, block, &expr, false)) {
3695 /* parseerror(parser, "parse error"); */
3701 if (!ast_block_add_expr(block, expr)) {
3708 if (parser->tok != '}') {
3711 (void)parser_next(parser);
3715 if (!parser_leaveblock(parser))
3717 return retval && !!block;
3720 static ast_block* parse_block(parser_t *parser)
3723 block = ast_block_new(parser_ctx(parser));
3726 if (!parse_block_into(parser, block)) {
3727 ast_block_delete(block);
3733 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3735 if (parser->tok == '{') {
3736 *out = (ast_expression*)parse_block(parser);
3739 return parse_statement(parser, NULL, out, false);
3742 static bool create_vector_members(ast_value *var, ast_member **me)
3745 size_t len = strlen(var->name);
3747 for (i = 0; i < 3; ++i) {
3748 char *name = (char*)mem_a(len+3);
3749 memcpy(name, var->name, len);
3751 name[len+1] = 'x'+i;
3753 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3762 do { ast_member_delete(me[--i]); } while(i);
3766 static bool parse_function_body(parser_t *parser, ast_value *var)
3768 ast_block *block = NULL;
3772 ast_expression *framenum = NULL;
3773 ast_expression *nextthink = NULL;
3774 /* None of the following have to be deleted */
3775 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3776 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3777 bool has_frame_think;
3781 has_frame_think = false;
3782 old = parser->function;
3784 if (var->expression.flags & AST_FLAG_ALIAS) {
3785 parseerror(parser, "function aliases cannot have bodies");
3789 if (parser->gotos.size() || parser->labels.size()) {
3790 parseerror(parser, "gotos/labels leaking");
3794 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
3795 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3796 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
3802 if (parser->tok == '[') {
3803 /* got a frame definition: [ framenum, nextthink ]
3804 * this translates to:
3805 * self.frame = framenum;
3806 * self.nextthink = time + 0.1;
3807 * self.think = nextthink;
3811 fld_think = parser_find_field(parser, "think");
3812 fld_nextthink = parser_find_field(parser, "nextthink");
3813 fld_frame = parser_find_field(parser, "frame");
3814 if (!fld_think || !fld_nextthink || !fld_frame) {
3815 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3816 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3819 gbl_time = parser_find_global(parser, "time");
3820 gbl_self = parser_find_global(parser, "self");
3821 if (!gbl_time || !gbl_self) {
3822 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3823 parseerror(parser, "please declare the following globals: `time`, `self`");
3827 if (!parser_next(parser))
3830 framenum = parse_expression_leave(parser, true, false, false);
3832 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3835 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3836 ast_unref(framenum);
3837 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3841 if (parser->tok != ',') {
3842 ast_unref(framenum);
3843 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3844 parseerror(parser, "Got a %i\n", parser->tok);
3848 if (!parser_next(parser)) {
3849 ast_unref(framenum);
3853 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3855 /* qc allows the use of not-yet-declared functions here
3856 * - this automatically creates a prototype */
3857 ast_value *thinkfunc;
3858 ast_expression *functype = fld_think->next;
3860 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->vtype);
3861 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
3862 ast_unref(framenum);
3863 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3866 ast_type_adopt(thinkfunc, functype);
3868 if (!parser_next(parser)) {
3869 ast_unref(framenum);
3870 ast_delete(thinkfunc);
3874 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
3876 nextthink = (ast_expression*)thinkfunc;
3879 nextthink = parse_expression_leave(parser, true, false, false);
3881 ast_unref(framenum);
3882 parseerror(parser, "expected a think-function in [frame,think] notation");
3887 if (!ast_istype(nextthink, ast_value)) {
3888 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3892 if (retval && parser->tok != ']') {
3893 parseerror(parser, "expected closing `]` for [frame,think] notation");
3897 if (retval && !parser_next(parser)) {
3901 if (retval && parser->tok != '{') {
3902 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3907 ast_unref(nextthink);
3908 ast_unref(framenum);
3912 has_frame_think = true;
3915 block = ast_block_new(parser_ctx(parser));
3917 parseerror(parser, "failed to allocate block");
3918 if (has_frame_think) {
3919 ast_unref(nextthink);
3920 ast_unref(framenum);
3925 if (has_frame_think) {
3926 if (!OPTS_FLAG(EMULATE_STATE)) {
3927 ast_state *state_op = ast_state_new(parser_ctx(parser), framenum, nextthink);
3928 if (!ast_block_add_expr(block, (ast_expression*)state_op)) {
3929 parseerror(parser, "failed to generate state op for [frame,think]");
3930 ast_unref(nextthink);
3931 ast_unref(framenum);
3936 /* emulate OP_STATE in code: */
3938 ast_expression *self_frame;
3939 ast_expression *self_nextthink;
3940 ast_expression *self_think;
3941 ast_expression *time_plus_1;
3942 ast_store *store_frame;
3943 ast_store *store_nextthink;
3944 ast_store *store_think;
3946 float frame_delta = 1.0f / (float)OPTS_OPTION_U32(OPTION_STATE_FPS);
3948 ctx = parser_ctx(parser);
3949 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3950 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3951 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3953 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3954 gbl_time, (ast_expression*)fold_constgen_float(parser->fold, frame_delta, false));
3956 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3957 if (self_frame) ast_delete(self_frame);
3958 if (self_nextthink) ast_delete(self_nextthink);
3959 if (self_think) ast_delete(self_think);
3960 if (time_plus_1) ast_delete(time_plus_1);
3966 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3967 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3968 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3971 ast_delete(self_frame);
3974 if (!store_nextthink) {
3975 ast_delete(self_nextthink);
3979 ast_delete(self_think);
3983 if (store_frame) ast_delete(store_frame);
3984 if (store_nextthink) ast_delete(store_nextthink);
3985 if (store_think) ast_delete(store_think);
3988 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3989 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3990 !ast_block_add_expr(block, (ast_expression*)store_think))
3997 parseerror(parser, "failed to generate code for [frame,think]");
3998 ast_unref(nextthink);
3999 ast_unref(framenum);
4006 if (var->hasvalue) {
4007 if (!(var->expression.flags & AST_FLAG_ACCUMULATE)) {
4008 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
4009 ast_block_delete(block);
4012 func = var->constval.vfunc;
4015 parseerror(parser, "internal error: NULL function: `%s`", var->name);
4016 ast_block_delete(block);
4020 func = ast_function_new(ast_ctx(var), var->name, var);
4023 parseerror(parser, "failed to allocate function for `%s`", var->name);
4024 ast_block_delete(block);
4027 parser->functions.push_back(func);
4030 parser_enterblock(parser);
4032 for (auto &it : var->expression.params) {
4036 if (it->expression.vtype != TYPE_VECTOR &&
4037 (it->expression.vtype != TYPE_FIELD ||
4038 it->expression.next->vtype != TYPE_VECTOR))
4043 if (!create_vector_members(it, me)) {
4044 ast_block_delete(block);
4048 for (e = 0; e < 3; ++e) {
4049 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
4050 ast_block_collect(block, (ast_expression*)me[e]);
4054 if (var->argcounter && !func->argc) {
4055 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4056 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4060 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC && !func->varargs) {
4062 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4063 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4064 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4065 varargs->expression.count = 0;
4066 util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
4067 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4068 ast_delete(varargs);
4069 ast_block_delete(block);
4072 util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
4073 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4074 ast_delete(varargs);
4075 ast_block_delete(block);
4078 func->varargs = varargs;
4079 func->fixedparams = (ast_value*)fold_constgen_float(parser->fold, var->expression.params.size(), false);
4082 parser->function = func;
4083 if (!parse_block_into(parser, block)) {
4084 ast_block_delete(block);
4088 func->blocks.push_back(block);
4090 parser->function = old;
4091 if (!parser_leaveblock(parser))
4093 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4094 parseerror(parser, "internal error: local scopes left");
4098 if (parser->tok == ';')
4099 return parser_next(parser);
4100 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4101 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4105 (void)!parser_leaveblock(parser);
4106 parser->functions.pop_back();
4107 ast_function_delete(func);
4108 var->constval.vfunc = NULL;
4111 parser->function = old;
4115 static ast_expression *array_accessor_split(
4120 ast_expression *left,
4121 ast_expression *right
4127 lex_ctx_t ctx = ast_ctx(array);
4129 if (!left || !right) {
4130 if (left) ast_delete(left);
4131 if (right) ast_delete(right);
4135 cmp = ast_binary_new(ctx, INSTR_LT,
4136 (ast_expression*)index,
4137 (ast_expression*)fold_constgen_float(parser->fold, middle, false));
4141 parseerror(parser, "internal error: failed to create comparison for array setter");
4145 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4147 ast_delete(cmp); /* will delete left and right */
4148 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4152 return (ast_expression*)ifthen;
4155 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4157 lex_ctx_t ctx = ast_ctx(array);
4159 if (from+1 == afterend) {
4160 /* set this value */
4163 ast_array_index *subscript;
4165 int assignop = type_store_instr[value->expression.vtype];
4167 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4168 assignop = INSTR_STORE_V;
4170 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from, false));
4174 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4176 ast_delete(subscript);
4180 block = ast_block_new(ctx);
4186 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4191 ret = ast_return_new(ctx, NULL);
4197 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4202 return (ast_expression*)block;
4204 ast_expression *left, *right;
4205 size_t diff = afterend - from;
4206 size_t middle = from + diff/2;
4207 left = array_setter_node(parser, array, index, value, from, middle);
4208 right = array_setter_node(parser, array, index, value, middle, afterend);
4209 return array_accessor_split(parser, array, index, middle, left, right);
4213 static ast_expression *array_field_setter_node(
4222 lex_ctx_t ctx = ast_ctx(array);
4224 if (from+1 == afterend) {
4225 /* set this value */
4228 ast_entfield *entfield;
4229 ast_array_index *subscript;
4231 int assignop = type_storep_instr[value->expression.vtype];
4233 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4234 assignop = INSTR_STOREP_V;
4236 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from, false));
4240 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4241 subscript->expression.vtype = TYPE_FIELD;
4243 entfield = ast_entfield_new_force(ctx,
4244 (ast_expression*)entity,
4245 (ast_expression*)subscript,
4246 (ast_expression*)subscript);
4248 ast_delete(subscript);
4252 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4254 ast_delete(entfield);
4258 block = ast_block_new(ctx);
4264 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4269 ret = ast_return_new(ctx, NULL);
4275 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4280 return (ast_expression*)block;
4282 ast_expression *left, *right;
4283 size_t diff = afterend - from;
4284 size_t middle = from + diff/2;
4285 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4286 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4287 return array_accessor_split(parser, array, index, middle, left, right);
4291 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4293 lex_ctx_t ctx = ast_ctx(array);
4295 if (from+1 == afterend) {
4297 ast_array_index *subscript;
4299 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from, false));
4303 ret = ast_return_new(ctx, (ast_expression*)subscript);
4305 ast_delete(subscript);
4309 return (ast_expression*)ret;
4311 ast_expression *left, *right;
4312 size_t diff = afterend - from;
4313 size_t middle = from + diff/2;
4314 left = array_getter_node(parser, array, index, from, middle);
4315 right = array_getter_node(parser, array, index, middle, afterend);
4316 return array_accessor_split(parser, array, index, middle, left, right);
4320 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4322 ast_function *func = NULL;
4323 ast_value *fval = NULL;
4324 ast_block *body = NULL;
4326 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4328 parseerror(parser, "failed to create accessor function value");
4331 fval->expression.flags &= ~(AST_FLAG_COVERAGE_MASK);
4333 func = ast_function_new(ast_ctx(array), funcname, fval);
4336 parseerror(parser, "failed to create accessor function node");
4340 body = ast_block_new(ast_ctx(array));
4342 parseerror(parser, "failed to create block for array accessor");
4348 func->blocks.push_back(body);
4351 parser->accessors.push_back(fval);
4356 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4358 ast_value *index = NULL;
4359 ast_value *value = NULL;
4363 if (!ast_istype(array->expression.next, ast_value)) {
4364 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4368 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4370 func = fval->constval.vfunc;
4371 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4373 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4374 value = ast_value_copy((ast_value*)array->expression.next);
4376 if (!index || !value) {
4377 parseerror(parser, "failed to create locals for array accessor");
4380 (void)!ast_value_set_name(value, "value"); /* not important */
4381 fval->expression.params.push_back(index);
4382 fval->expression.params.push_back(value);
4384 array->setter = fval;
4387 if (index) ast_delete(index);
4388 if (value) ast_delete(value);
4394 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4396 ast_expression *root = NULL;
4397 root = array_setter_node(parser, array,
4398 array->setter->expression.params[0],
4399 array->setter->expression.params[1],
4400 0, array->expression.count);
4402 parseerror(parser, "failed to build accessor search tree");
4405 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4412 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4414 if (!parser_create_array_setter_proto(parser, array, funcname))
4416 return parser_create_array_setter_impl(parser, array);
4419 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4421 ast_expression *root = NULL;
4422 ast_value *entity = NULL;
4423 ast_value *index = NULL;
4424 ast_value *value = NULL;
4428 if (!ast_istype(array->expression.next, ast_value)) {
4429 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4433 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4435 func = fval->constval.vfunc;
4436 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4438 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4439 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4440 value = ast_value_copy((ast_value*)array->expression.next);
4441 if (!entity || !index || !value) {
4442 parseerror(parser, "failed to create locals for array accessor");
4445 (void)!ast_value_set_name(value, "value"); /* not important */
4446 fval->expression.params.push_back(entity);
4447 fval->expression.params.push_back(index);
4448 fval->expression.params.push_back(value);
4450 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4452 parseerror(parser, "failed to build accessor search tree");
4456 array->setter = fval;
4457 return ast_block_add_expr(func->blocks[0], root);
4459 if (entity) ast_delete(entity);
4460 if (index) ast_delete(index);
4461 if (value) ast_delete(value);
4462 if (root) ast_delete(root);
4468 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4470 ast_value *index = NULL;
4474 /* NOTE: checking array->expression.next rather than elemtype since
4475 * for fields elemtype is a temporary fieldtype.
4477 if (!ast_istype(array->expression.next, ast_value)) {
4478 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4482 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4484 func = fval->constval.vfunc;
4485 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4487 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4490 parseerror(parser, "failed to create locals for array accessor");
4493 fval->expression.params.push_back(index);
4495 array->getter = fval;
4498 if (index) ast_delete(index);
4504 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4506 ast_expression *root = NULL;
4508 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4510 parseerror(parser, "failed to build accessor search tree");
4513 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4520 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4522 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4524 return parser_create_array_getter_impl(parser, array);
4527 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4529 lex_ctx_t ctx = parser_ctx(parser);
4530 std::vector<ast_value *> params;
4533 bool variadic = false;
4534 ast_value *varparam = NULL;
4535 char *argcounter = NULL;
4537 /* for the sake of less code we parse-in in this function */
4538 if (!parser_next(parser)) {
4540 parseerror(parser, "expected parameter list");
4544 /* parse variables until we hit a closing paren */
4545 while (parser->tok != ')') {
4546 bool is_varargs = false;
4549 /* there must be commas between them */
4550 if (parser->tok != ',') {
4551 parseerror(parser, "expected comma or end of parameter list");
4554 if (!parser_next(parser)) {
4555 parseerror(parser, "expected parameter");
4561 ast_value *param = parse_typename(parser, NULL, NULL, &is_varargs);
4562 if (!param && !is_varargs)
4565 /* '...' indicates a varargs function */
4567 if (parser->tok != ')' && parser->tok != TOKEN_IDENT) {
4568 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4571 if (parser->tok == TOKEN_IDENT) {
4572 argcounter = util_strdup(parser_tokval(parser));
4573 if (!parser_next(parser) || parser->tok != ')') {
4574 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4579 params.push_back(param);
4580 if (param->expression.vtype >= TYPE_VARIANT) {
4581 char tname[1024]; /* typename is reserved in C++ */
4582 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4583 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4586 /* type-restricted varargs */
4587 if (parser->tok == TOKEN_DOTS) {
4589 varparam = params.back();
4591 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4592 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4595 if (parser->tok == TOKEN_IDENT) {
4596 argcounter = util_strdup(parser_tokval(parser));
4597 ast_value_set_name(param, argcounter);
4598 if (!parser_next(parser) || parser->tok != ')') {
4599 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4604 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC && param->name[0] == '<') {
4605 parseerror(parser, "parameter name omitted");
4611 if (params.size() == 1 && params[0]->expression.vtype == TYPE_VOID)
4615 if (params.size() > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4616 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4619 if (!parser_next(parser)) {
4620 parseerror(parser, "parse error after typename");
4624 /* now turn 'var' into a function type */
4625 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4626 fval->expression.next = (ast_expression*)var;
4628 fval->expression.flags |= AST_FLAG_VARIADIC;
4631 var->expression.params = params;
4632 var->expression.varparam = (ast_expression*)varparam;
4633 var->argcounter = argcounter;
4641 ast_delete(varparam);
4643 for (auto &it : params)
4648 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4650 ast_expression *cexp;
4651 ast_value *cval, *tmp;
4654 ctx = parser_ctx(parser);
4656 if (!parser_next(parser)) {
4658 parseerror(parser, "expected array-size");
4662 if (parser->tok != ']') {
4663 cexp = parse_expression_leave(parser, true, false, false);
4665 if (!cexp || !ast_istype(cexp, ast_value)) {
4669 parseerror(parser, "expected array-size as constant positive integer");
4672 cval = (ast_value*)cexp;
4679 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4680 tmp->expression.next = (ast_expression*)var;
4684 if (cval->expression.vtype == TYPE_INTEGER)
4685 tmp->expression.count = cval->constval.vint;
4686 else if (cval->expression.vtype == TYPE_FLOAT)
4687 tmp->expression.count = cval->constval.vfloat;
4691 parseerror(parser, "array-size must be a positive integer constant");
4697 var->expression.count = -1;
4698 var->expression.flags |= AST_FLAG_ARRAY_INIT;
4701 if (parser->tok != ']') {
4703 parseerror(parser, "expected ']' after array-size");
4706 if (!parser_next(parser)) {
4708 parseerror(parser, "error after parsing array size");
4714 /* Parse a complete typename.
4715 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4716 * but when parsing variables separated by comma
4717 * 'storebase' should point to where the base-type should be kept.
4718 * The base type makes up every bit of type information which comes *before* the
4721 * NOTE: The value must either be named, have a NULL name, or a name starting
4722 * with '<'. In the first case, this will be the actual variable or type
4723 * name, in the other cases it is assumed that the name will appear
4724 * later, and an error is generated otherwise.
4726 * The following will be parsed in its entirety:
4728 * The 'basetype' in this case is 'void()'
4729 * and if there's a comma after it, say:
4731 * then the type-information 'void()' can be stored in 'storebase'
4733 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef, bool *is_vararg)
4735 ast_value *var, *tmp;
4738 const char *name = NULL;
4739 bool isfield = false;
4740 bool wasarray = false;
4741 size_t morefields = 0;
4743 bool vararg = (parser->tok == TOKEN_DOTS);
4745 ctx = parser_ctx(parser);
4747 /* types may start with a dot */
4748 if (parser->tok == '.' || parser->tok == TOKEN_DOTS) {
4750 if (parser->tok == TOKEN_DOTS)
4752 /* if we parsed a dot we need a typename now */
4753 if (!parser_next(parser)) {
4754 parseerror(parser, "expected typename for field definition");
4758 /* Further dots are handled seperately because they won't be part of the
4762 if (parser->tok == '.')
4764 else if (parser->tok == TOKEN_DOTS)
4769 if (!parser_next(parser)) {
4770 parseerror(parser, "expected typename for field definition");
4775 if (parser->tok == TOKEN_IDENT)
4776 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4777 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4778 if (vararg && is_vararg) {
4782 parseerror(parser, "expected typename");
4786 /* generate the basic type value */
4787 if (cached_typedef) {
4788 var = ast_value_copy(cached_typedef);
4789 ast_value_set_name(var, "<type(from_def)>");
4791 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4793 for (; morefields; --morefields) {
4794 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4795 tmp->expression.next = (ast_expression*)var;
4799 /* do not yet turn into a field - remember:
4800 * .void() foo; is a field too
4801 * .void()() foo; is a function
4805 if (!parser_next(parser)) {
4807 parseerror(parser, "parse error after typename");
4811 /* an opening paren now starts the parameter-list of a function
4812 * this is where original-QC has parameter lists.
4813 * We allow a single parameter list here.
4814 * Much like fteqcc we don't allow `float()() x`
4816 if (parser->tok == '(') {
4817 var = parse_parameter_list(parser, var);
4822 /* store the base if requested */
4824 *storebase = ast_value_copy(var);
4826 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4827 tmp->expression.next = (ast_expression*)*storebase;
4832 /* there may be a name now */
4833 if (parser->tok == TOKEN_IDENT || parser->tok == TOKEN_KEYWORD) {
4834 if (!strcmp(parser_tokval(parser), "break"))
4835 (void)!parsewarning(parser, WARN_BREAKDEF, "break definition ignored (suggest removing it)");
4836 else if (parser->tok == TOKEN_KEYWORD)
4839 name = util_strdup(parser_tokval(parser));
4842 if (!parser_next(parser)) {
4845 parseerror(parser, "error after variable or field declaration");
4851 /* now this may be an array */
4852 if (parser->tok == '[') {
4854 var = parse_arraysize(parser, var);
4856 if (name) mem_d(name);
4861 /* This is the point where we can turn it into a field */
4863 /* turn it into a field if desired */
4864 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4865 tmp->expression.next = (ast_expression*)var;
4869 /* now there may be function parens again */
4870 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4871 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4872 if (parser->tok == '(' && wasarray)
4873 parseerror(parser, "arrays as part of a return type is not supported");
4874 while (parser->tok == '(') {
4875 var = parse_parameter_list(parser, var);
4877 if (name) mem_d(name);
4882 /* finally name it */
4884 if (!ast_value_set_name(var, name)) {
4887 parseerror(parser, "internal error: failed to set name");
4890 /* free the name, ast_value_set_name duplicates */
4897 static bool parse_typedef(parser_t *parser)
4899 ast_value *typevar, *oldtype;
4900 ast_expression *old;
4902 typevar = parse_typename(parser, NULL, NULL, NULL);
4907 /* while parsing types, the ast_value's get named '<something>' */
4908 if (!typevar->name || typevar->name[0] == '<') {
4909 parseerror(parser, "missing name in typedef");
4910 ast_delete(typevar);
4914 if ( (old = parser_find_var(parser, typevar->name)) ) {
4915 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4916 " -> `%s` has been declared here: %s:%i",
4917 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4918 ast_delete(typevar);
4922 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4923 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4924 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4925 ast_delete(typevar);
4929 vec_push(parser->_typedefs, typevar);
4930 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4932 if (parser->tok != ';') {
4933 parseerror(parser, "expected semicolon after typedef");
4936 if (!parser_next(parser)) {
4937 parseerror(parser, "parse error after typedef");
4944 static const char *cvq_to_str(int cvq) {
4946 case CV_NONE: return "none";
4947 case CV_VAR: return "`var`";
4948 case CV_CONST: return "`const`";
4949 default: return "<INVALID>";
4953 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4956 if (proto->cvq != var->cvq) {
4957 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4958 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4959 parser->tok == '='))
4961 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
4962 "`%s` declared with different qualifiers: %s\n"
4963 " -> previous declaration here: %s:%i uses %s",
4964 var->name, cvq_to_str(var->cvq),
4965 ast_ctx(proto).file, ast_ctx(proto).line,
4966 cvq_to_str(proto->cvq));
4969 av = (var ->expression.flags & AST_FLAG_NORETURN);
4970 ao = (proto->expression.flags & AST_FLAG_NORETURN);
4972 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
4973 "`%s` declared with different attributes%s\n"
4974 " -> previous declaration here: %s:%i",
4975 var->name, (av ? ": noreturn" : ""),
4976 ast_ctx(proto).file, ast_ctx(proto).line,
4977 (ao ? ": noreturn" : ""));
4982 static bool create_array_accessors(parser_t *parser, ast_value *var)
4985 util_snprintf(name, sizeof(name), "%s##SET", var->name);
4986 if (!parser_create_array_setter(parser, var, name))
4988 util_snprintf(name, sizeof(name), "%s##GET", var->name);
4989 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4994 static bool parse_array(parser_t *parser, ast_value *array)
4997 if (array->initlist.size()) {
4998 parseerror(parser, "array already initialized elsewhere");
5001 if (!parser_next(parser)) {
5002 parseerror(parser, "parse error in array initializer");
5006 while (parser->tok != '}') {
5007 ast_value *v = (ast_value*)parse_expression_leave(parser, true, false, false);
5010 if (!ast_istype(v, ast_value) || !v->hasvalue || v->cvq != CV_CONST) {
5012 parseerror(parser, "initializing element must be a compile time constant");
5015 array->initlist.push_back(v->constval);
5016 if (v->expression.vtype == TYPE_STRING) {
5017 array->initlist[i].vstring = util_strdupe(array->initlist[i].vstring);
5021 if (parser->tok == '}')
5023 if (parser->tok != ',' || !parser_next(parser)) {
5024 parseerror(parser, "expected comma or '}' in element list");
5028 if (!parser_next(parser) || parser->tok != ';') {
5029 parseerror(parser, "expected semicolon after initializer, got %s");
5033 if (!parser_next(parser)) {
5034 parseerror(parser, "parse error after initializer");
5039 if (array->expression.flags & AST_FLAG_ARRAY_INIT) {
5040 if (array->expression.count != (size_t)-1) {
5041 parseerror(parser, "array `%s' has already been initialized with %u elements",
5042 array->name, (unsigned)array->expression.count);
5044 array->expression.count = array->initlist.size();
5045 if (!create_array_accessors(parser, array))
5051 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool is_static, uint32_t qflags, char *vstring)
5055 ast_expression *old;
5059 ast_value *basetype = NULL;
5061 bool isparam = false;
5062 bool isvector = false;
5063 bool cleanvar = true;
5064 bool wasarray = false;
5066 ast_member *me[3] = { NULL, NULL, NULL };
5067 ast_member *last_me[3] = { NULL, NULL, NULL };
5069 if (!localblock && is_static)
5070 parseerror(parser, "`static` qualifier is not supported in global scope");
5072 /* get the first complete variable */
5073 var = parse_typename(parser, &basetype, cached_typedef, NULL);
5076 ast_delete(basetype);
5080 /* while parsing types, the ast_value's get named '<something>' */
5081 if (!var->name || var->name[0] == '<') {
5082 parseerror(parser, "declaration does not declare anything");
5084 ast_delete(basetype);
5092 /* Part 0: finish the type */
5093 if (parser->tok == '(') {
5094 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5095 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5096 var = parse_parameter_list(parser, var);
5102 /* we only allow 1-dimensional arrays */
5103 if (parser->tok == '[') {
5105 var = parse_arraysize(parser, var);
5111 if (parser->tok == '(' && wasarray) {
5112 parseerror(parser, "arrays as part of a return type is not supported");
5113 /* we'll still parse the type completely for now */
5115 /* for functions returning functions */
5116 while (parser->tok == '(') {
5117 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5118 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5119 var = parse_parameter_list(parser, var);
5126 var->cvq = qualifier;
5127 if (qflags & AST_FLAG_COVERAGE) /* specified in QC, drop our default */
5128 var->expression.flags &= ~(AST_FLAG_COVERAGE_MASK);
5129 var->expression.flags |= qflags;
5132 * store the vstring back to var for alias and
5133 * deprecation messages.
5135 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5136 var->expression.flags & AST_FLAG_ALIAS)
5137 var->desc = vstring;
5139 if (parser_find_global(parser, var->name) && var->expression.flags & AST_FLAG_ALIAS) {
5140 parseerror(parser, "function aliases cannot be forward declared");
5147 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5148 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5149 * is then filled with the previous definition and the parameter-names replaced.
5151 if (!strcmp(var->name, "nil")) {
5152 if (OPTS_FLAG(UNTYPED_NIL)) {
5153 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5154 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5156 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5159 /* Deal with end_sys_ vars */
5161 if (!strcmp(var->name, "end_sys_globals")) {
5163 parser->crc_globals = parser->globals.size();
5166 else if (!strcmp(var->name, "end_sys_fields")) {
5168 parser->crc_fields = parser->fields.size();
5171 if (was_end && var->expression.vtype == TYPE_FIELD) {
5172 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5173 "global '%s' hint should not be a field",
5174 parser_tokval(parser)))
5181 if (!nofields && var->expression.vtype == TYPE_FIELD)
5183 /* deal with field declarations */
5184 old = parser_find_field(parser, var->name);
5186 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5187 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5196 parseerror(parser, "field `%s` already declared here: %s:%i",
5197 var->name, ast_ctx(old).file, ast_ctx(old).line);
5202 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5203 (old = parser_find_global(parser, var->name)))
5205 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5206 parseerror(parser, "field `%s` already declared here: %s:%i",
5207 var->name, ast_ctx(old).file, ast_ctx(old).line);
5214 /* deal with other globals */
5215 old = parser_find_global(parser, var->name);
5216 if (old && var->expression.vtype == TYPE_FUNCTION && old->vtype == TYPE_FUNCTION)
5218 /* This is a function which had a prototype */
5219 if (!ast_istype(old, ast_value)) {
5220 parseerror(parser, "internal error: prototype is not an ast_value");
5224 proto = (ast_value*)old;
5225 proto->desc = var->desc;
5226 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5227 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5229 ast_ctx(proto).file, ast_ctx(proto).line);
5233 /* we need the new parameter-names */
5234 for (i = 0; i < proto->expression.params.size(); ++i)
5235 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5236 if (!parser_check_qualifiers(parser, var, proto)) {
5243 proto->expression.flags |= var->expression.flags;
5251 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5252 "global `%s` already declared here: %s:%i",
5253 var->name, ast_ctx(old).file, ast_ctx(old).line))
5258 if (old->flags & AST_FLAG_FINAL_DECL) {
5259 parseerror(parser, "cannot redeclare variable `%s`, declared final here: %s:%i",
5260 var->name, ast_ctx(old).file, ast_ctx(old).line);
5264 proto = (ast_value*)old;
5265 if (!ast_istype(old, ast_value)) {
5266 parseerror(parser, "internal error: not an ast_value");
5271 if (!parser_check_qualifiers(parser, var, proto)) {
5276 proto->expression.flags |= var->expression.flags;
5277 /* copy the context for finals,
5278 * so the error can show where it was actually made 'final'
5280 if (proto->expression.flags & AST_FLAG_FINAL_DECL)
5281 ast_ctx(old) = ast_ctx(var);
5285 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5286 (old = parser_find_field(parser, var->name)))
5288 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5289 parseerror(parser, "global `%s` already declared here: %s:%i",
5290 var->name, ast_ctx(old).file, ast_ctx(old).line);
5297 else /* it's not a global */
5299 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5300 if (old && !isparam) {
5301 parseerror(parser, "local `%s` already declared here: %s:%i",
5302 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5306 /* doing this here as the above is just for a single scope */
5307 old = parser_find_local(parser, var->name, 0, &isparam);
5308 if (old && isparam) {
5309 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5310 "local `%s` is shadowing a parameter", var->name))
5312 parseerror(parser, "local `%s` already declared here: %s:%i",
5313 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5317 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5319 if (ast_istype(old, ast_value))
5320 var = proto = (ast_value*)old;
5329 /* in a noref section we simply bump the usecount */
5330 if (noref || parser->noref)
5334 * Create the global/local, and deal with vector types.
5337 if (var->expression.vtype == TYPE_VECTOR)
5339 else if (var->expression.vtype == TYPE_FIELD &&
5340 var->expression.next->vtype == TYPE_VECTOR)
5344 if (!create_vector_members(var, me)) {
5351 /* deal with global variables, fields, functions */
5352 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5353 var->isfield = true;
5354 parser->fields.push_back((ast_expression*)var);
5355 util_htset(parser->htfields, var->name, var);
5357 for (i = 0; i < 3; ++i) {
5358 parser->fields.push_back((ast_expression*)me[i]);
5359 util_htset(parser->htfields, me[i]->name, me[i]);
5364 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5365 parser_addglobal(parser, var->name, (ast_expression*)var);
5367 for (i = 0; i < 3; ++i) {
5368 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5372 ast_expression *find = parser_find_global(parser, var->desc);
5375 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5379 if (!ast_compare_type((ast_expression*)var, find)) {
5383 ast_type_to_string(find, ty1, sizeof(ty1));
5384 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5386 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5392 util_htset(parser->aliases, var->name, find);
5394 /* generate aliases for vector components */
5398 util_asprintf(&buffer[0], "%s_x", var->desc);
5399 util_asprintf(&buffer[1], "%s_y", var->desc);
5400 util_asprintf(&buffer[2], "%s_z", var->desc);
5402 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5403 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5404 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5414 /* a static adds itself to be generated like any other global
5415 * but is added to the local namespace instead
5417 char *defname = NULL;
5418 size_t prefix_len, ln;
5421 ln = strlen(parser->function->name);
5422 vec_append(defname, ln, parser->function->name);
5424 vec_append(defname, 2, "::");
5425 /* remember the length up to here */
5426 prefix_len = vec_size(defname);
5428 /* Add it to the local scope */
5429 util_htset(vec_last(parser->variables), var->name, (void*)var);
5431 /* now rename the global */
5432 ln = strlen(var->name);
5433 vec_append(defname, ln, var->name);
5434 /* if a variable of that name already existed, add the
5436 * The counter is incremented either way.
5438 sn_size = vec_size(parser->function->static_names);
5439 for (sn = 0; sn != sn_size; ++sn) {
5440 if (strcmp(parser->function->static_names[sn], var->name) == 0)
5443 if (sn != sn_size) {
5445 int len = util_asprintf(&num, "#%u", parser->function->static_count);
5446 vec_append(defname, len, num);
5450 vec_push(parser->function->static_names, util_strdup(var->name));
5451 parser->function->static_count++;
5452 ast_value_set_name(var, defname);
5454 /* push it to the to-be-generated globals */
5455 parser->globals.push_back((ast_expression*)var);
5457 /* same game for the vector members */
5459 for (i = 0; i < 3; ++i) {
5460 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5462 vec_shrinkto(defname, prefix_len);
5463 ln = strlen(me[i]->name);
5464 vec_append(defname, ln, me[i]->name);
5465 ast_member_set_name(me[i], defname);
5467 parser->globals.push_back((ast_expression*)me[i]);
5472 localblock->locals.push_back(var);
5473 parser_addlocal(parser, var->name, (ast_expression*)var);
5475 for (i = 0; i < 3; ++i) {
5476 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5477 ast_block_collect(localblock, (ast_expression*)me[i]);
5483 memcpy(last_me, me, sizeof(me));
5484 me[0] = me[1] = me[2] = NULL;
5489 if (var->expression.vtype == TYPE_ARRAY) {
5490 if (var->expression.count != (size_t)-1) {
5491 if (!create_array_accessors(parser, var))
5495 else if (!localblock && !nofields &&
5496 var->expression.vtype == TYPE_FIELD &&
5497 var->expression.next->vtype == TYPE_ARRAY)
5500 ast_expression *telem;
5502 ast_value *array = (ast_value*)var->expression.next;
5504 if (!ast_istype(var->expression.next, ast_value)) {
5505 parseerror(parser, "internal error: field element type must be an ast_value");
5509 util_snprintf(name, sizeof(name), "%s##SETF", var->name);
5510 if (!parser_create_array_field_setter(parser, array, name))
5513 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5514 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5515 tfield->expression.next = telem;
5516 util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
5517 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5525 if (parser->tok == ';') {
5526 ast_delete(basetype);
5527 if (!parser_next(parser)) {
5528 parseerror(parser, "error after variable declaration");
5534 if (parser->tok == ',')
5538 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5541 parseerror(parser, "missing comma or semicolon while parsing variables");
5545 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5546 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5547 "initializing expression turns variable `%s` into a constant in this standard",
5554 if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
5555 if (parser->tok != '=') {
5556 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5560 if (!parser_next(parser)) {
5561 parseerror(parser, "error parsing initializer");
5565 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5566 parseerror(parser, "expected '=' before function body in this standard");
5569 if (parser->tok == '#') {
5570 ast_function *func = NULL;
5571 ast_value *number = NULL;
5577 parseerror(parser, "cannot declare builtins within functions");
5580 if (var->expression.vtype != TYPE_FUNCTION) {
5581 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5584 if (!parser_next(parser)) {
5585 parseerror(parser, "expected builtin number");
5589 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
5590 number = (ast_value*)parse_expression_leave(parser, true, false, false);
5592 parseerror(parser, "builtin number expected");
5595 if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
5598 parseerror(parser, "builtin number must be a compile time constant");
5601 if (number->expression.vtype == TYPE_INTEGER)
5602 builtin_num = number->constval.vint;
5603 else if (number->expression.vtype == TYPE_FLOAT)
5604 builtin_num = number->constval.vfloat;
5607 parseerror(parser, "builtin number must be an integer constant");
5612 fractional = modff(builtin_num, &integral);
5613 if (builtin_num < 0 || fractional != 0) {
5614 parseerror(parser, "builtin number must be an integer greater than zero");
5618 /* we only want the integral part anyways */
5619 builtin_num = integral;
5620 } else if (parser->tok == TOKEN_INTCONST) {
5621 builtin_num = parser_token(parser)->constval.i;
5623 parseerror(parser, "builtin number must be a compile time constant");
5627 if (var->hasvalue) {
5628 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5629 "builtin `%s` has already been defined\n"
5630 " -> previous declaration here: %s:%i",
5631 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5635 func = ast_function_new(ast_ctx(var), var->name, var);
5637 parseerror(parser, "failed to allocate function for `%s`", var->name);
5640 parser->functions.push_back(func);
5642 func->builtin = -builtin_num-1;
5645 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
5646 ? (parser->tok != ',' && parser->tok != ';')
5647 : (!parser_next(parser)))
5649 parseerror(parser, "expected comma or semicolon");
5651 ast_function_delete(func);
5652 var->constval.vfunc = NULL;
5656 else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
5659 /* Note that fteqcc and most others don't even *have*
5660 * local arrays, so this is not a high priority.
5662 parseerror(parser, "TODO: initializers for local arrays");
5666 var->hasvalue = true;
5667 if (!parse_array(parser, var))
5670 else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
5673 parseerror(parser, "cannot declare functions within functions");
5678 ast_ctx(proto) = parser_ctx(parser);
5680 if (!parse_function_body(parser, var))
5682 ast_delete(basetype);
5683 for (auto &it : parser->gotos)
5684 parseerror(parser, "undefined label: `%s`", it->name);
5687 ast_expression *cexp;
5689 bool folded_const = false;
5691 cexp = parse_expression_leave(parser, true, false, false);
5694 cval = ast_istype(cexp, ast_value) ? (ast_value*)cexp : NULL;
5696 /* deal with foldable constants: */
5698 var->cvq == CV_CONST && cval && cval->hasvalue && cval->cvq == CV_CONST && !cval->isfield)
5700 /* remove it from the current locals */
5702 for (i = 0; i < 3; ++i) {
5703 vec_pop(parser->_locals);
5704 localblock->collect.pop_back();
5707 /* do sanity checking, this function really needs refactoring */
5708 if (vec_last(parser->_locals) != (ast_expression*)var)
5709 parseerror(parser, "internal error: unexpected change in local variable handling");
5711 vec_pop(parser->_locals);
5712 if (localblock->locals.back() != var)
5713 parseerror(parser, "internal error: unexpected change in local variable handling (2)");
5715 localblock->locals.pop_back();
5716 /* push it to the to-be-generated globals */
5717 parser->globals.push_back((ast_expression*)var);
5719 for (i = 0; i < 3; ++i)
5720 parser->globals.push_back((ast_expression*)last_me[i]);
5721 folded_const = true;
5724 if (folded_const || !localblock || is_static) {
5725 if (cval != parser->nil &&
5726 (!cval || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5729 parseerror(parser, "initializer is non constant");
5734 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5735 qualifier != CV_VAR)
5737 var->cvq = CV_CONST;
5739 if (cval == parser->nil)
5740 var->expression.flags |= AST_FLAG_INITIALIZED;
5743 var->hasvalue = true;
5744 if (cval->expression.vtype == TYPE_STRING)
5745 var->constval.vstring = parser_strdup(cval->constval.vstring);
5746 else if (cval->expression.vtype == TYPE_FIELD)
5747 var->constval.vfield = cval;
5749 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5758 sy.out.push_back(syexp(ast_ctx(var), (ast_expression*)var));
5759 sy.out.push_back(syexp(ast_ctx(cexp), (ast_expression*)cexp));
5760 sy.ops.push_back(syop(ast_ctx(var), parser->assign_op));
5761 if (!parser_sy_apply_operator(parser, &sy))
5764 if (sy.out.size() != 1 && sy.ops.size() != 0)
5765 parseerror(parser, "internal error: leaked operands");
5766 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5771 /* a constant initialized to an inexact value should be marked inexact:
5772 * const float x = <inexact>; should propagate the inexact flag
5774 if (var->cvq == CV_CONST && var->expression.vtype == TYPE_FLOAT) {
5775 if (cval && cval->hasvalue && cval->cvq == CV_CONST)
5776 var->inexact = cval->inexact;
5781 if (parser->tok == ',') {
5782 if (!parser_next(parser)) {
5783 parseerror(parser, "expected another variable");
5787 if (parser->tok != TOKEN_IDENT) {
5788 parseerror(parser, "expected another variable");
5791 var = ast_value_copy(basetype);
5793 ast_value_set_name(var, parser_tokval(parser));
5794 if (!parser_next(parser)) {
5795 parseerror(parser, "error parsing variable declaration");
5801 if (parser->tok != ';') {
5802 parseerror(parser, "missing semicolon after variables");
5806 if (!parser_next(parser)) {
5807 parseerror(parser, "parse error after variable declaration");
5811 ast_delete(basetype);
5815 if (cleanvar && var)
5817 ast_delete(basetype);
5821 ast_delete(basetype);
5822 if (cleanvar && var)
5824 if (me[0]) ast_member_delete(me[0]);
5825 if (me[1]) ast_member_delete(me[1]);
5826 if (me[2]) ast_member_delete(me[2]);
5830 static bool parser_global_statement(parser_t *parser)
5834 bool is_static = false;
5835 uint32_t qflags = 0;
5836 ast_value *istype = NULL;
5837 char *vstring = NULL;
5839 if (parser->tok == TOKEN_IDENT)
5840 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5842 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.' || parser->tok == TOKEN_DOTS)
5844 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5846 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5848 if (cvq == CV_WRONG)
5850 return parse_variable(parser, NULL, false, cvq, NULL, noref, is_static, qflags, vstring);
5852 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5854 return parse_enum(parser);
5856 else if (parser->tok == TOKEN_KEYWORD)
5858 if (!strcmp(parser_tokval(parser), "typedef")) {
5859 if (!parser_next(parser)) {
5860 parseerror(parser, "expected type definition after 'typedef'");
5863 return parse_typedef(parser);
5865 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5868 else if (parser->tok == '#')
5870 return parse_pragma(parser);
5872 else if (parser->tok == '$')
5874 if (!parser_next(parser)) {
5875 parseerror(parser, "parse error");
5881 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
5887 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5889 return util_crc16(old, str, strlen(str));
5892 static void progdefs_crc_file(const char *str)
5894 /* write to progdefs.h here */
5898 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5900 old = progdefs_crc_sum(old, str);
5901 progdefs_crc_file(str);
5905 static void generate_checksum(parser_t *parser, ir_builder *ir)
5907 uint16_t crc = 0xFFFF;
5911 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5912 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5914 progdefs_crc_file("\tint\tpad;\n");
5915 progdefs_crc_file("\tint\tofs_return[3];\n");
5916 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5917 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5918 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5919 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5920 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5921 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5922 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5923 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5925 for (i = 0; i < parser->crc_globals; ++i) {
5926 if (!ast_istype(parser->globals[i], ast_value))
5928 value = (ast_value*)(parser->globals[i]);
5929 switch (value->expression.vtype) {
5930 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5931 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5932 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5933 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5935 crc = progdefs_crc_both(crc, "\tint\t");
5938 crc = progdefs_crc_both(crc, value->name);
5939 crc = progdefs_crc_both(crc, ";\n");
5941 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5942 for (i = 0; i < parser->crc_fields; ++i) {
5943 if (!ast_istype(parser->fields[i], ast_value))
5945 value = (ast_value*)(parser->fields[i]);
5946 switch (value->expression.next->vtype) {
5947 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5948 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5949 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5950 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5952 crc = progdefs_crc_both(crc, "\tint\t");
5955 crc = progdefs_crc_both(crc, value->name);
5956 crc = progdefs_crc_both(crc, ";\n");
5958 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5959 ir->code->crc = crc;
5962 parser_t *parser_create()
5965 lex_ctx_t empty_ctx;
5968 parser = (parser_t*)mem_a(sizeof(parser_t));
5972 memset(parser, 0, sizeof(*parser));
5975 new (parser) parser_t();
5977 for (i = 0; i < operator_count; ++i) {
5978 if (operators[i].id == opid1('=')) {
5979 parser->assign_op = operators+i;
5983 if (!parser->assign_op) {
5984 con_err("internal error: initializing parser: failed to find assign operator\n");
5989 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
5990 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
5991 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
5992 vec_push(parser->_blocktypedefs, 0);
5994 parser->aliases = util_htnew(PARSER_HT_SIZE);
5996 empty_ctx.file = "<internal>";
5998 empty_ctx.column = 0;
5999 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
6000 parser->nil->cvq = CV_CONST;
6001 if (OPTS_FLAG(UNTYPED_NIL))
6002 util_htset(parser->htglobals, "nil", (void*)parser->nil);
6004 parser->max_param_count = 1;
6006 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
6007 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
6008 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
6010 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
6011 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
6012 parser->reserved_version->cvq = CV_CONST;
6013 parser->reserved_version->hasvalue = true;
6014 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
6015 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
6017 parser->reserved_version = NULL;
6020 parser->fold = fold_init (parser);
6021 parser->intrin = intrin_init(parser);
6025 static bool parser_compile(parser_t *parser)
6027 /* initial lexer/parser state */
6028 parser->lex->flags.noops = true;
6030 if (parser_next(parser))
6032 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
6034 if (!parser_global_statement(parser)) {
6035 if (parser->tok == TOKEN_EOF)
6036 parseerror(parser, "unexpected end of file");
6037 else if (compile_errors)
6038 parseerror(parser, "there have been errors, bailing out");
6039 lex_close(parser->lex);
6045 parseerror(parser, "parse error");
6046 lex_close(parser->lex);
6051 lex_close(parser->lex);
6054 return !compile_errors;
6057 bool parser_compile_file(parser_t *parser, const char *filename)
6059 parser->lex = lex_open(filename);
6061 con_err("failed to open file \"%s\"\n", filename);
6064 return parser_compile(parser);
6067 bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
6069 parser->lex = lex_open_string(str, len, name);
6071 con_err("failed to create lexer for string \"%s\"\n", name);
6074 return parser_compile(parser);
6077 static void parser_remove_ast(parser_t *parser)
6080 if (parser->ast_cleaned)
6082 parser->ast_cleaned = true;
6083 for (auto &it : parser->accessors) {
6084 ast_delete(it->constval.vfunc);
6085 it->constval.vfunc = nullptr;
6088 for (auto &it : parser->functions) ast_delete(it);
6089 for (auto &it : parser->globals) ast_delete(it);
6090 for (auto &it : parser->fields) ast_delete(it);
6092 for (i = 0; i < vec_size(parser->variables); ++i)
6093 util_htdel(parser->variables[i]);
6094 vec_free(parser->variables);
6095 vec_free(parser->_blocklocals);
6096 vec_free(parser->_locals);
6098 for (i = 0; i < vec_size(parser->_typedefs); ++i)
6099 ast_delete(parser->_typedefs[i]);
6100 vec_free(parser->_typedefs);
6101 for (i = 0; i < vec_size(parser->typedefs); ++i)
6102 util_htdel(parser->typedefs[i]);
6103 vec_free(parser->typedefs);
6104 vec_free(parser->_blocktypedefs);
6106 vec_free(parser->_block_ctx);
6108 ast_value_delete(parser->nil);
6110 ast_value_delete(parser->const_vec[0]);
6111 ast_value_delete(parser->const_vec[1]);
6112 ast_value_delete(parser->const_vec[2]);
6114 if (parser->reserved_version)
6115 ast_value_delete(parser->reserved_version);
6117 util_htdel(parser->aliases);
6118 fold_cleanup(parser->fold);
6119 intrin_cleanup(parser->intrin);
6122 void parser_cleanup(parser_t *parser)
6124 parser_remove_ast(parser);
6128 static bool parser_set_coverage_func(parser_t *parser, ir_builder *ir) {
6129 ast_expression *expr;
6133 if (!OPTS_OPTION_BOOL(OPTION_COVERAGE))
6137 for (auto &it : parser->functions) {
6138 if (!strcmp(it->name, "coverage")) {
6144 if (OPTS_OPTION_BOOL(OPTION_COVERAGE)) {
6145 con_out("coverage support requested but no coverage() builtin declared\n");
6146 ir_builder_delete(ir);
6153 expr = (ast_expression*)cov;
6155 if (expr->vtype != TYPE_FUNCTION || expr->params.size()) {
6157 ast_type_to_string(expr, ty, sizeof(ty));
6158 con_out("invalid type for coverage(): %s\n", ty);
6159 ir_builder_delete(ir);
6163 ir->coverage_func = func->ir_func->value;
6167 bool parser_finish(parser_t *parser, const char *output)
6172 if (compile_errors) {
6173 con_out("*** there were compile errors\n");
6177 ir = ir_builder_new("gmqcc_out");
6179 con_out("failed to allocate builder\n");
6183 for (auto &it : parser->fields) {
6185 if (!ast_istype(it, ast_value))
6187 ast_value *field = (ast_value*)it;
6188 hasvalue = field->hasvalue;
6189 field->hasvalue = false;
6190 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6191 con_out("failed to generate field %s\n", field->name);
6192 ir_builder_delete(ir);
6197 ast_expression *subtype;
6198 field->hasvalue = true;
6199 subtype = field->expression.next;
6200 ifld = ir_builder_create_field(ir, field->name, subtype->vtype);
6201 if (subtype->vtype == TYPE_FIELD)
6202 ifld->fieldtype = subtype->next->vtype;
6203 else if (subtype->vtype == TYPE_FUNCTION)
6204 ifld->outtype = subtype->next->vtype;
6205 (void)!ir_value_set_field(field->ir_v, ifld);
6208 for (auto &it : parser->globals) {
6210 if (!ast_istype(it, ast_value))
6212 asvalue = (ast_value*)it;
6213 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6214 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6215 "unused global: `%s`", asvalue->name);
6217 if (!ast_global_codegen(asvalue, ir, false)) {
6218 con_out("failed to generate global %s\n", asvalue->name);
6219 ir_builder_delete(ir);
6223 /* Build function vararg accessor ast tree now before generating
6224 * immediates, because the accessors may add new immediates
6226 for (auto &f : parser->functions) {
6228 if (parser->max_param_count > f->vtype->expression.params.size()) {
6229 f->varargs->expression.count = parser->max_param_count - f->vtype->expression.params.size();
6230 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6231 con_out("failed to generate vararg setter for %s\n", f->name);
6232 ir_builder_delete(ir);
6235 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6236 con_out("failed to generate vararg getter for %s\n", f->name);
6237 ir_builder_delete(ir);
6241 ast_delete(f->varargs);
6246 /* Now we can generate immediates */
6247 if (!fold_generate(parser->fold, ir))
6250 /* before generating any functions we need to set the coverage_func */
6251 if (!parser_set_coverage_func(parser, ir))
6253 for (auto &it : parser->globals) {
6254 if (!ast_istype(it, ast_value))
6256 ast_value *asvalue = (ast_value*)it;
6257 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6259 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6260 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6261 "uninitialized constant: `%s`",
6263 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6264 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6265 "uninitialized global: `%s`",
6268 if (!ast_generate_accessors(asvalue, ir)) {
6269 ir_builder_delete(ir);
6273 for (auto &it : parser->fields) {
6274 ast_value *asvalue = (ast_value*)it->next;
6275 if (!ast_istype((ast_expression*)asvalue, ast_value))
6277 if (asvalue->expression.vtype != TYPE_ARRAY)
6279 if (!ast_generate_accessors(asvalue, ir)) {
6280 ir_builder_delete(ir);
6284 if (parser->reserved_version &&
6285 !ast_global_codegen(parser->reserved_version, ir, false))
6287 con_out("failed to generate reserved::version");
6288 ir_builder_delete(ir);
6291 for (auto &f : parser->functions) {
6292 if (!ast_function_codegen(f, ir)) {
6293 con_out("failed to generate function %s\n", f->name);
6294 ir_builder_delete(ir);
6299 generate_checksum(parser, ir);
6301 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6302 ir_builder_dump(ir, con_out);
6303 for (auto &it : parser->functions) {
6304 if (!ir_function_finalize(it->ir_func)) {
6305 con_out("failed to finalize function %s\n", it->name);
6306 ir_builder_delete(ir);
6310 parser_remove_ast(parser);
6312 if (compile_Werrors) {
6313 con_out("*** there were warnings treated as errors\n");
6314 compile_show_werrors();
6319 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6320 ir_builder_dump(ir, con_out);
6322 if (!ir_builder_generate(ir, output)) {
6323 con_out("*** failed to generate output file\n");
6324 ir_builder_delete(ir);
6328 ir_builder_delete(ir);