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%lu < %lu+%lu\n",
1182 (unsigned long)sy->out.size(),
1184 (unsigned long)paramcount);
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: (%lu+1+%lu), %lu",
1260 (unsigned long)fid, (unsigned long)paramcount, (unsigned long)sy->out.size());
1264 for (i = 0; i < paramcount; ++i)
1265 call->params.push_back(sy->out[fid+1 + i].out);
1266 sy->out.erase(sy->out.end() - paramcount, sy->out.end());
1267 (void)!ast_call_check_types(call, parser->function->vtype->expression.varparam);
1268 if (parser->max_param_count < paramcount)
1269 parser->max_param_count = paramcount;
1271 if (ast_istype(fun, ast_value)) {
1272 funval = (ast_value*)fun;
1273 if ((fun->flags & AST_FLAG_VARIADIC) &&
1274 !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
1276 call->va_count = (ast_expression*)fold_constgen_float(parser->fold, (qcfloat_t)paramcount, false);
1280 /* overwrite fid, the function, with a call */
1281 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1283 if (fun->vtype != TYPE_FUNCTION) {
1284 parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
1289 parseerror(parser, "could not determine function return type");
1292 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1294 if (fun->flags & AST_FLAG_DEPRECATED) {
1296 return !parsewarning(parser, WARN_DEPRECATED,
1297 "call to function (which is marked deprecated)\n",
1298 "-> it has been declared here: %s:%i",
1299 ast_ctx(fun).file, ast_ctx(fun).line);
1302 return !parsewarning(parser, WARN_DEPRECATED,
1303 "call to `%s` (which is marked deprecated)\n"
1304 "-> `%s` declared here: %s:%i",
1305 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1307 return !parsewarning(parser, WARN_DEPRECATED,
1308 "call to `%s` (deprecated: %s)\n"
1309 "-> `%s` declared here: %s:%i",
1310 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1314 if (fun->params.size() != paramcount &&
1315 !((fun->flags & AST_FLAG_VARIADIC) &&
1316 fun->params.size() < paramcount))
1318 const char *fewmany = (fun->params.size() > paramcount) ? "few" : "many";
1320 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1321 "too %s parameters for call to %s: expected %i, got %i\n"
1322 " -> `%s` has been declared here: %s:%i",
1323 fewmany, fval->name, (int)fun->params.size(), (int)paramcount,
1324 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1326 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1327 "too %s parameters for function call: expected %i, got %i\n"
1328 " -> it has been declared here: %s:%i",
1329 fewmany, (int)fun->params.size(), (int)paramcount,
1330 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1337 static bool parser_close_paren(parser_t *parser, shunt *sy)
1339 if (sy->ops.empty()) {
1340 parseerror(parser, "unmatched closing paren");
1344 while (sy->ops.size()) {
1345 if (sy->ops.back().isparen) {
1346 if (sy->paren.back() == PAREN_FUNC) {
1347 sy->paren.pop_back();
1348 if (!parser_close_call(parser, sy))
1352 if (sy->paren.back() == PAREN_EXPR) {
1353 sy->paren.pop_back();
1354 if (sy->out.empty()) {
1355 compile_error(sy->ops.back().ctx, "empty paren expression");
1362 if (sy->paren.back() == PAREN_INDEX) {
1363 sy->paren.pop_back();
1364 // pop off the parenthesis
1366 /* then apply the index operator */
1367 if (!parser_sy_apply_operator(parser, sy))
1371 if (sy->paren.back() == PAREN_TERNARY1) {
1372 sy->paren.back() = PAREN_TERNARY2;
1373 // pop off the parenthesis
1377 compile_error(sy->ops.back().ctx, "invalid parenthesis");
1380 if (!parser_sy_apply_operator(parser, sy))
1386 static void parser_reclassify_token(parser_t *parser)
1389 if (parser->tok >= TOKEN_START)
1391 for (i = 0; i < operator_count; ++i) {
1392 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1393 parser->tok = TOKEN_OPERATOR;
1399 static ast_expression* parse_vararg_do(parser_t *parser)
1401 ast_expression *idx, *out;
1403 ast_value *funtype = parser->function->vtype;
1404 lex_ctx_t ctx = parser_ctx(parser);
1406 if (!parser->function->varargs) {
1407 parseerror(parser, "function has no variable argument list");
1411 if (!parser_next(parser) || parser->tok != '(') {
1412 parseerror(parser, "expected parameter index and type in parenthesis");
1415 if (!parser_next(parser)) {
1416 parseerror(parser, "error parsing parameter index");
1420 idx = parse_expression_leave(parser, true, false, false);
1424 if (parser->tok != ',') {
1425 if (parser->tok != ')') {
1427 parseerror(parser, "expected comma after parameter index");
1430 /* vararg piping: ...(start) */
1431 out = (ast_expression*)ast_argpipe_new(ctx, idx);
1435 if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
1437 parseerror(parser, "expected typename for vararg");
1441 typevar = parse_typename(parser, NULL, NULL, NULL);
1447 if (parser->tok != ')') {
1449 ast_delete(typevar);
1450 parseerror(parser, "expected closing paren");
1454 if (funtype->expression.varparam &&
1455 !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
1459 ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
1460 ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
1461 compile_error(ast_ctx(typevar),
1462 "function was declared to take varargs of type `%s`, requested type is: %s",
1466 out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
1467 ast_type_adopt(out, typevar);
1468 ast_delete(typevar);
1472 static ast_expression* parse_vararg(parser_t *parser)
1474 bool old_noops = parser->lex->flags.noops;
1476 ast_expression *out;
1478 parser->lex->flags.noops = true;
1479 out = parse_vararg_do(parser);
1481 parser->lex->flags.noops = old_noops;
1485 /* not to be exposed */
1486 bool ftepp_predef_exists(const char *name);
1487 static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
1489 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1490 parser->tok == TOKEN_IDENT &&
1491 !strcmp(parser_tokval(parser), "_"))
1493 /* a translatable string */
1496 parser->lex->flags.noops = true;
1497 if (!parser_next(parser) || parser->tok != '(') {
1498 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1501 parser->lex->flags.noops = false;
1502 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1503 parseerror(parser, "expected a constant string in translatable-string extension");
1506 val = (ast_value*)fold_constgen_string(parser->fold, parser_tokval(parser), true);
1509 sy->out.push_back(syexp(parser_ctx(parser), (ast_expression*)val));
1511 if (!parser_next(parser) || parser->tok != ')') {
1512 parseerror(parser, "expected closing paren after translatable string");
1517 else if (parser->tok == TOKEN_DOTS)
1520 if (!OPTS_FLAG(VARIADIC_ARGS)) {
1521 parseerror(parser, "cannot access varargs (try -fvariadic-args)");
1524 va = parse_vararg(parser);
1527 sy->out.push_back(syexp(parser_ctx(parser), va));
1530 else if (parser->tok == TOKEN_FLOATCONST) {
1531 ast_expression *val = fold_constgen_float(parser->fold, (parser_token(parser)->constval.f), false);
1534 sy->out.push_back(syexp(parser_ctx(parser), val));
1537 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1538 ast_expression *val = fold_constgen_float(parser->fold, (qcfloat_t)(parser_token(parser)->constval.i), false);
1541 sy->out.push_back(syexp(parser_ctx(parser), val));
1544 else if (parser->tok == TOKEN_STRINGCONST) {
1545 ast_expression *val = fold_constgen_string(parser->fold, parser_tokval(parser), false);
1548 sy->out.push_back(syexp(parser_ctx(parser), val));
1551 else if (parser->tok == TOKEN_VECTORCONST) {
1552 ast_expression *val = fold_constgen_vector(parser->fold, parser_token(parser)->constval.v);
1555 sy->out.push_back(syexp(parser_ctx(parser), val));
1558 else if (parser->tok == TOKEN_IDENT)
1560 const char *ctoken = parser_tokval(parser);
1561 ast_expression *prev = sy->out.size() ? sy->out.back().out : NULL;
1562 ast_expression *var;
1563 /* a_vector.{x,y,z} */
1564 if (sy->ops.empty() ||
1565 !sy->ops.back().etype ||
1566 operators[sy->ops.back().etype-1].id != opid1('.'))
1568 /* When adding more intrinsics, fix the above condition */
1571 if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
1573 var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
1575 var = parser_find_var(parser, parser_tokval(parser));
1577 var = parser_find_field(parser, parser_tokval(parser));
1579 if (!var && with_labels) {
1580 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1582 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1583 var = (ast_expression*)lbl;
1584 parser->labels.push_back(lbl);
1587 if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
1588 var = (ast_expression*)fold_constgen_string(parser->fold, parser->function->name, false);
1591 * now we try for the real intrinsic hashtable. If the string
1592 * begins with __builtin, we simply skip past it, otherwise we
1593 * use the identifier as is.
1595 if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
1596 var = intrin_func(parser->intrin, parser_tokval(parser));
1600 * Try it again, intrin_func deals with the alias method as well
1601 * the first one masks for __builtin though, we emit warning here.
1604 if ((var = intrin_func(parser->intrin, parser_tokval(parser)))) {
1605 (void)!compile_warning(
1608 "using implicitly defined builtin `__builtin_%s' for `%s'",
1609 parser_tokval(parser),
1610 parser_tokval(parser)
1618 * sometimes people use preprocessing predefs without enabling them
1619 * i've done this thousands of times already myself. Lets check for
1620 * it in the predef table. And diagnose it better :)
1622 if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
1623 parseerror(parser, "unexpected identifier: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1627 parseerror(parser, "unexpected identifier: %s", parser_tokval(parser));
1633 if (ast_istype(var, ast_value)) {
1634 ((ast_value*)var)->uses++;
1636 else if (ast_istype(var, ast_member)) {
1637 ast_member *mem = (ast_member*)var;
1638 if (ast_istype(mem->owner, ast_value))
1639 ((ast_value*)(mem->owner))->uses++;
1642 sy->out.push_back(syexp(parser_ctx(parser), var));
1645 parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
1649 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1651 ast_expression *expr = NULL;
1653 bool wantop = false;
1654 /* only warn once about an assignment in a truth value because the current code
1655 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1657 bool warn_parenthesis = true;
1659 /* count the parens because an if starts with one, so the
1660 * end of a condition is an unmatched closing paren
1664 memset(&sy, 0, sizeof(sy));
1666 parser->lex->flags.noops = false;
1668 parser_reclassify_token(parser);
1672 if (parser->tok == TOKEN_TYPENAME) {
1673 parseerror(parser, "unexpected typename `%s`", parser_tokval(parser));
1677 if (parser->tok == TOKEN_OPERATOR)
1679 /* classify the operator */
1680 const oper_info *op;
1681 const oper_info *olast = NULL;
1683 for (o = 0; o < operator_count; ++o) {
1684 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1685 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1686 !strcmp(parser_tokval(parser), operators[o].op))
1691 if (o == operator_count) {
1692 compile_error(parser_ctx(parser), "unexpected operator: %s", parser_tokval(parser));
1695 /* found an operator */
1698 /* when declaring variables, a comma starts a new variable */
1699 if (op->id == opid1(',') && sy.paren.empty() && stopatcomma) {
1700 /* fixup the token */
1705 /* a colon without a pervious question mark cannot be a ternary */
1706 if (!ternaries && op->id == opid2(':','?')) {
1711 if (op->id == opid1(',')) {
1712 if (sy.paren.size() && sy.paren.back() == PAREN_TERNARY2) {
1713 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1717 if (sy.ops.size() && !sy.ops.back().isparen)
1718 olast = &operators[sy.ops.back().etype-1];
1720 /* first only apply higher precedences, assoc_left+equal comes after we warn about precedence rules */
1721 while (olast && op->prec < olast->prec)
1723 if (!parser_sy_apply_operator(parser, &sy))
1725 if (sy.ops.size() && !sy.ops.back().isparen)
1726 olast = &operators[sy.ops.back().etype-1];
1731 #define IsAssignOp(x) (\
1732 (x) == opid1('=') || \
1733 (x) == opid2('+','=') || \
1734 (x) == opid2('-','=') || \
1735 (x) == opid2('*','=') || \
1736 (x) == opid2('/','=') || \
1737 (x) == opid2('%','=') || \
1738 (x) == opid2('&','=') || \
1739 (x) == opid2('|','=') || \
1740 (x) == opid3('&','~','=') \
1742 if (warn_parenthesis) {
1743 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1744 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1745 (truthvalue && sy.paren.empty() && IsAssignOp(op->id))
1748 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1749 warn_parenthesis = false;
1752 if (olast && olast->id != op->id) {
1753 if ((op->id == opid1('&') || op->id == opid1('|') || op->id == opid1('^')) &&
1754 (olast->id == opid1('&') || olast->id == opid1('|') || olast->id == opid1('^')))
1756 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around bitwise operations");
1757 warn_parenthesis = false;
1759 else if ((op->id == opid2('&','&') || op->id == opid2('|','|')) &&
1760 (olast->id == opid2('&','&') || olast->id == opid2('|','|')))
1762 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around logical operations");
1763 warn_parenthesis = false;
1769 (op->prec < olast->prec) ||
1770 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1772 if (!parser_sy_apply_operator(parser, &sy))
1774 if (sy.ops.size() && !sy.ops.back().isparen)
1775 olast = &operators[sy.ops.back().etype-1];
1780 if (op->id == opid1('(')) {
1782 size_t sycount = sy.out.size();
1783 /* we expected an operator, this is the function-call operator */
1784 sy.paren.push_back(PAREN_FUNC);
1785 sy.ops.push_back(syparen(parser_ctx(parser), sycount-1));
1786 sy.argc.push_back(0);
1788 sy.paren.push_back(PAREN_EXPR);
1789 sy.ops.push_back(syparen(parser_ctx(parser), 0));
1792 } else if (op->id == opid1('[')) {
1794 parseerror(parser, "unexpected array subscript");
1797 sy.paren.push_back(PAREN_INDEX);
1798 /* push both the operator and the paren, this makes life easier */
1799 sy.ops.push_back(syop(parser_ctx(parser), op));
1800 sy.ops.push_back(syparen(parser_ctx(parser), 0));
1802 } else if (op->id == opid2('?',':')) {
1803 sy.ops.push_back(syop(parser_ctx(parser), op));
1804 sy.ops.push_back(syparen(parser_ctx(parser), 0));
1807 sy.paren.push_back(PAREN_TERNARY1);
1808 } else if (op->id == opid2(':','?')) {
1809 if (sy.paren.empty()) {
1810 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1813 if (sy.paren.back() != PAREN_TERNARY1) {
1814 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1817 if (!parser_close_paren(parser, &sy))
1819 sy.ops.push_back(syop(parser_ctx(parser), op));
1823 sy.ops.push_back(syop(parser_ctx(parser), op));
1824 wantop = !!(op->flags & OP_SUFFIX);
1827 else if (parser->tok == ')') {
1828 while (sy.paren.size() && sy.paren.back() == PAREN_TERNARY2) {
1829 if (!parser_sy_apply_operator(parser, &sy))
1832 if (sy.paren.empty())
1835 if (sy.paren.back() == PAREN_TERNARY1) {
1836 parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
1839 if (!parser_close_paren(parser, &sy))
1842 /* must be a function call without parameters */
1843 if (sy.paren.back() != PAREN_FUNC) {
1844 parseerror(parser, "closing paren in invalid position");
1847 if (!parser_close_paren(parser, &sy))
1852 else if (parser->tok == '(') {
1853 parseerror(parser, "internal error: '(' should be classified as operator");
1856 else if (parser->tok == '[') {
1857 parseerror(parser, "internal error: '[' should be classified as operator");
1860 else if (parser->tok == ']') {
1861 while (sy.paren.size() && sy.paren.back() == PAREN_TERNARY2) {
1862 if (!parser_sy_apply_operator(parser, &sy))
1865 if (sy.paren.empty())
1867 if (sy.paren.back() != PAREN_INDEX) {
1868 parseerror(parser, "mismatched parentheses, unexpected ']'");
1871 if (!parser_close_paren(parser, &sy))
1876 if (!parse_sya_operand(parser, &sy, with_labels))
1881 /* in this case we might want to allow constant string concatenation */
1882 bool concatenated = false;
1883 if (parser->tok == TOKEN_STRINGCONST && sy.out.size()) {
1884 ast_expression *lexpr = sy.out.back().out;
1885 if (ast_istype(lexpr, ast_value)) {
1886 ast_value *last = (ast_value*)lexpr;
1887 if (last->isimm == true && last->cvq == CV_CONST &&
1888 last->hasvalue && last->expression.vtype == TYPE_STRING)
1890 char *newstr = NULL;
1891 util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
1892 sy.out.back().out = (ast_expression*)fold_constgen_string(parser->fold, newstr, false);
1894 concatenated = true;
1898 if (!concatenated) {
1899 parseerror(parser, "expected operator or end of statement");
1904 if (!parser_next(parser)) {
1907 if (parser->tok == ';' ||
1908 ((sy.paren.empty() || (sy.paren.size() == 1 && sy.paren.back() == PAREN_TERNARY2)) &&
1909 (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
1915 while (sy.ops.size()) {
1916 if (!parser_sy_apply_operator(parser, &sy))
1920 parser->lex->flags.noops = true;
1921 if (sy.out.size() != 1) {
1922 parseerror(parser, "expression expected");
1925 expr = sy.out[0].out;
1928 if (sy.paren.size()) {
1929 parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)sy.paren.size());
1937 parser->lex->flags.noops = true;
1938 for (auto &it : sy.out)
1939 if (it.out) ast_unref(it.out);
1947 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
1949 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
1952 if (parser->tok != ';') {
1953 parseerror(parser, "semicolon expected after expression");
1957 if (!parser_next(parser)) {
1964 static void parser_enterblock(parser_t *parser)
1966 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1967 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1968 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1969 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1970 vec_push(parser->_block_ctx, parser_ctx(parser));
1973 static bool parser_leaveblock(parser_t *parser)
1976 size_t locals, typedefs;
1978 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1979 parseerror(parser, "internal error: parser_leaveblock with no block");
1983 util_htdel(vec_last(parser->variables));
1985 vec_pop(parser->variables);
1986 if (!vec_size(parser->_blocklocals)) {
1987 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1991 locals = vec_last(parser->_blocklocals);
1992 vec_pop(parser->_blocklocals);
1993 while (vec_size(parser->_locals) != locals) {
1994 ast_expression *e = vec_last(parser->_locals);
1995 ast_value *v = (ast_value*)e;
1996 vec_pop(parser->_locals);
1997 if (ast_istype(e, ast_value) && !v->uses) {
1998 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2003 typedefs = vec_last(parser->_blocktypedefs);
2004 while (vec_size(parser->_typedefs) != typedefs) {
2005 ast_delete(vec_last(parser->_typedefs));
2006 vec_pop(parser->_typedefs);
2008 util_htdel(vec_last(parser->typedefs));
2009 vec_pop(parser->typedefs);
2011 vec_pop(parser->_block_ctx);
2016 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2018 vec_push(parser->_locals, e);
2019 util_htset(vec_last(parser->variables), name, (void*)e);
2022 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2024 parser->globals.push_back(e);
2025 util_htset(parser->htglobals, name, e);
2028 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2032 ast_expression *prev;
2034 if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
2036 ast_type_to_string(cond, ty, sizeof(ty));
2037 compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
2040 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
2043 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2046 parseerror(parser, "internal error: failed to process condition");
2051 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
2053 /* vector types need to be cast to true booleans */
2054 ast_binary *bin = (ast_binary*)cond;
2055 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2057 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2059 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2062 parseerror(parser, "internal error: failed to process condition");
2069 unary = (ast_unary*)cond;
2070 /* ast_istype dereferences cond, should test here for safety */
2071 while (cond && ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2073 cond = unary->operand;
2074 unary->operand = NULL;
2077 unary = (ast_unary*)cond;
2081 parseerror(parser, "internal error: failed to process condition");
2083 if (ifnot) *_ifnot = !*_ifnot;
2087 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2090 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2093 lex_ctx_t ctx = parser_ctx(parser);
2095 (void)block; /* not touching */
2097 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2098 if (!parser_next(parser)) {
2099 parseerror(parser, "expected condition or 'not'");
2102 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2104 if (!parser_next(parser)) {
2105 parseerror(parser, "expected condition in parenthesis");
2109 if (parser->tok != '(') {
2110 parseerror(parser, "expected 'if' condition in parenthesis");
2113 /* parse into the expression */
2114 if (!parser_next(parser)) {
2115 parseerror(parser, "expected 'if' condition after opening paren");
2118 /* parse the condition */
2119 cond = parse_expression_leave(parser, false, true, false);
2123 if (parser->tok != ')') {
2124 parseerror(parser, "expected closing paren after 'if' condition");
2128 /* parse into the 'then' branch */
2129 if (!parser_next(parser)) {
2130 parseerror(parser, "expected statement for on-true branch of 'if'");
2134 if (!parse_statement_or_block(parser, &ontrue)) {
2139 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2140 /* check for an else */
2141 if (!strcmp(parser_tokval(parser), "else")) {
2142 /* parse into the 'else' branch */
2143 if (!parser_next(parser)) {
2144 parseerror(parser, "expected on-false branch after 'else'");
2149 if (!parse_statement_or_block(parser, &onfalse)) {
2156 cond = process_condition(parser, cond, &ifnot);
2158 if (ontrue) ast_delete(ontrue);
2159 if (onfalse) ast_delete(onfalse);
2164 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2166 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2167 *out = (ast_expression*)ifthen;
2171 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2172 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2177 /* skip the 'while' and get the body */
2178 if (!parser_next(parser)) {
2179 if (OPTS_FLAG(LOOP_LABELS))
2180 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2182 parseerror(parser, "expected 'while' condition in parenthesis");
2186 if (parser->tok == ':') {
2187 if (!OPTS_FLAG(LOOP_LABELS))
2188 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2189 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2190 parseerror(parser, "expected loop label");
2193 label = util_strdup(parser_tokval(parser));
2194 if (!parser_next(parser)) {
2196 parseerror(parser, "expected 'while' condition in parenthesis");
2201 if (parser->tok != '(') {
2202 parseerror(parser, "expected 'while' condition in parenthesis");
2206 parser->breaks.push_back(label);
2207 parser->continues.push_back(label);
2209 rv = parse_while_go(parser, block, out);
2212 if (parser->breaks.back() != label || parser->continues.back() != label) {
2213 parseerror(parser, "internal error: label stack corrupted");
2219 parser->breaks.pop_back();
2220 parser->continues.pop_back();
2225 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2228 ast_expression *cond, *ontrue;
2232 lex_ctx_t ctx = parser_ctx(parser);
2234 (void)block; /* not touching */
2236 /* parse into the expression */
2237 if (!parser_next(parser)) {
2238 parseerror(parser, "expected 'while' condition after opening paren");
2241 /* parse the condition */
2242 cond = parse_expression_leave(parser, false, true, false);
2246 if (parser->tok != ')') {
2247 parseerror(parser, "expected closing paren after 'while' condition");
2251 /* parse into the 'then' branch */
2252 if (!parser_next(parser)) {
2253 parseerror(parser, "expected while-loop body");
2257 if (!parse_statement_or_block(parser, &ontrue)) {
2262 cond = process_condition(parser, cond, &ifnot);
2267 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2268 *out = (ast_expression*)aloop;
2272 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2273 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2278 /* skip the 'do' and get the body */
2279 if (!parser_next(parser)) {
2280 if (OPTS_FLAG(LOOP_LABELS))
2281 parseerror(parser, "expected loop label or body");
2283 parseerror(parser, "expected loop body");
2287 if (parser->tok == ':') {
2288 if (!OPTS_FLAG(LOOP_LABELS))
2289 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2290 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2291 parseerror(parser, "expected loop label");
2294 label = util_strdup(parser_tokval(parser));
2295 if (!parser_next(parser)) {
2297 parseerror(parser, "expected loop body");
2302 parser->breaks.push_back(label);
2303 parser->continues.push_back(label);
2305 rv = parse_dowhile_go(parser, block, out);
2308 if (parser->breaks.back() != label || parser->continues.back() != label) {
2309 parseerror(parser, "internal error: label stack corrupted");
2312 * Test for NULL otherwise ast_delete dereferences null pointer
2320 parser->breaks.pop_back();
2321 parser->continues.pop_back();
2326 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2329 ast_expression *cond, *ontrue;
2333 lex_ctx_t ctx = parser_ctx(parser);
2335 (void)block; /* not touching */
2337 if (!parse_statement_or_block(parser, &ontrue))
2340 /* expect the "while" */
2341 if (parser->tok != TOKEN_KEYWORD ||
2342 strcmp(parser_tokval(parser), "while"))
2344 parseerror(parser, "expected 'while' and condition");
2349 /* skip the 'while' and check for opening paren */
2350 if (!parser_next(parser) || parser->tok != '(') {
2351 parseerror(parser, "expected 'while' condition in parenthesis");
2355 /* parse into the expression */
2356 if (!parser_next(parser)) {
2357 parseerror(parser, "expected 'while' condition after opening paren");
2361 /* parse the condition */
2362 cond = parse_expression_leave(parser, false, true, false);
2366 if (parser->tok != ')') {
2367 parseerror(parser, "expected closing paren after 'while' condition");
2373 if (!parser_next(parser) || parser->tok != ';') {
2374 parseerror(parser, "expected semicolon after condition");
2380 if (!parser_next(parser)) {
2381 parseerror(parser, "parse error");
2387 cond = process_condition(parser, cond, &ifnot);
2392 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2393 *out = (ast_expression*)aloop;
2397 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2398 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2403 /* skip the 'for' and check for opening paren */
2404 if (!parser_next(parser)) {
2405 if (OPTS_FLAG(LOOP_LABELS))
2406 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2408 parseerror(parser, "expected 'for' expressions in parenthesis");
2412 if (parser->tok == ':') {
2413 if (!OPTS_FLAG(LOOP_LABELS))
2414 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2415 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2416 parseerror(parser, "expected loop label");
2419 label = util_strdup(parser_tokval(parser));
2420 if (!parser_next(parser)) {
2422 parseerror(parser, "expected 'for' expressions in parenthesis");
2427 if (parser->tok != '(') {
2428 parseerror(parser, "expected 'for' expressions in parenthesis");
2432 parser->breaks.push_back(label);
2433 parser->continues.push_back(label);
2435 rv = parse_for_go(parser, block, out);
2438 if (parser->breaks.back() != label || parser->continues.back() != label) {
2439 parseerror(parser, "internal error: label stack corrupted");
2445 parser->breaks.pop_back();
2446 parser->continues.pop_back();
2450 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2453 ast_expression *initexpr, *cond, *increment, *ontrue;
2458 lex_ctx_t ctx = parser_ctx(parser);
2460 parser_enterblock(parser);
2467 /* parse into the expression */
2468 if (!parser_next(parser)) {
2469 parseerror(parser, "expected 'for' initializer after opening paren");
2474 if (parser->tok == TOKEN_IDENT)
2475 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2477 if (typevar || parser->tok == TOKEN_TYPENAME) {
2478 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2481 else if (parser->tok != ';')
2483 initexpr = parse_expression_leave(parser, false, false, false);
2487 /* move on to condition */
2488 if (parser->tok != ';') {
2489 parseerror(parser, "expected semicolon after for-loop initializer");
2493 if (!parser_next(parser)) {
2494 parseerror(parser, "expected for-loop condition");
2499 /* parse the condition */
2500 if (parser->tok != ';') {
2501 cond = parse_expression_leave(parser, false, true, false);
2506 /* move on to incrementor */
2507 if (parser->tok != ';') {
2508 parseerror(parser, "expected semicolon after for-loop initializer");
2511 if (!parser_next(parser)) {
2512 parseerror(parser, "expected for-loop condition");
2516 /* parse the incrementor */
2517 if (parser->tok != ')') {
2518 lex_ctx_t condctx = parser_ctx(parser);
2519 increment = parse_expression_leave(parser, false, false, false);
2522 if (!ast_side_effects(increment)) {
2523 if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2529 if (parser->tok != ')') {
2530 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2533 /* parse into the 'then' branch */
2534 if (!parser_next(parser)) {
2535 parseerror(parser, "expected for-loop body");
2538 if (!parse_statement_or_block(parser, &ontrue))
2542 cond = process_condition(parser, cond, &ifnot);
2546 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2547 *out = (ast_expression*)aloop;
2549 if (!parser_leaveblock(parser)) {
2555 if (initexpr) ast_unref(initexpr);
2556 if (cond) ast_unref(cond);
2557 if (increment) ast_unref(increment);
2558 (void)!parser_leaveblock(parser);
2562 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2564 ast_expression *exp = NULL;
2565 ast_expression *var = NULL;
2566 ast_return *ret = NULL;
2567 ast_value *retval = parser->function->return_value;
2568 ast_value *expected = parser->function->vtype;
2570 lex_ctx_t ctx = parser_ctx(parser);
2572 (void)block; /* not touching */
2574 if (!parser_next(parser)) {
2575 parseerror(parser, "expected return expression");
2579 /* return assignments */
2580 if (parser->tok == '=') {
2581 if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
2582 parseerror(parser, "return assignments not activated, try using -freturn-assigments");
2586 if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
2588 ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
2589 parseerror(parser, "invalid return type: `%s'", ty1);
2593 if (!parser_next(parser)) {
2594 parseerror(parser, "expected return assignment expression");
2598 if (!(exp = parse_expression_leave(parser, false, false, false)))
2601 /* prepare the return value */
2603 retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
2604 ast_type_adopt(retval, expected->expression.next);
2605 parser->function->return_value = retval;
2608 if (!ast_compare_type(exp, (ast_expression*)retval)) {
2609 char ty1[1024], ty2[1024];
2610 ast_type_to_string(exp, ty1, sizeof(ty1));
2611 ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
2612 parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
2615 /* store to 'return' local variable */
2616 var = (ast_expression*)ast_store_new(
2618 type_store_instr[expected->expression.next->vtype],
2619 (ast_expression*)retval, exp);
2626 if (parser->tok != ';')
2627 parseerror(parser, "missing semicolon after return assignment");
2628 else if (!parser_next(parser))
2629 parseerror(parser, "parse error after return assignment");
2635 if (parser->tok != ';') {
2636 exp = parse_expression(parser, false, false);
2640 if (exp->vtype != TYPE_NIL &&
2641 exp->vtype != ((ast_expression*)expected)->next->vtype)
2643 parseerror(parser, "return with invalid expression");
2646 ret = ast_return_new(ctx, exp);
2652 if (!parser_next(parser))
2653 parseerror(parser, "parse error");
2655 if (!retval && expected->expression.next->vtype != TYPE_VOID)
2657 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2659 ret = ast_return_new(ctx, (ast_expression*)retval);
2661 *out = (ast_expression*)ret;
2665 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2668 unsigned int levels = 0;
2669 lex_ctx_t ctx = parser_ctx(parser);
2670 auto &loops = (is_continue ? parser->continues : parser->breaks);
2672 (void)block; /* not touching */
2673 if (!parser_next(parser)) {
2674 parseerror(parser, "expected semicolon or loop label");
2678 if (loops.empty()) {
2680 parseerror(parser, "`continue` can only be used inside loops");
2682 parseerror(parser, "`break` can only be used inside loops or switches");
2685 if (parser->tok == TOKEN_IDENT) {
2686 if (!OPTS_FLAG(LOOP_LABELS))
2687 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2690 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2693 parseerror(parser, "no such loop to %s: `%s`",
2694 (is_continue ? "continue" : "break out of"),
2695 parser_tokval(parser));
2700 if (!parser_next(parser)) {
2701 parseerror(parser, "expected semicolon");
2706 if (parser->tok != ';') {
2707 parseerror(parser, "expected semicolon");
2711 if (!parser_next(parser))
2712 parseerror(parser, "parse error");
2714 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2718 /* returns true when it was a variable qualifier, false otherwise!
2719 * on error, cvq is set to CV_WRONG
2721 struct attribute_t {
2726 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2728 bool had_const = false;
2729 bool had_var = false;
2730 bool had_noref = false;
2731 bool had_attrib = false;
2732 bool had_static = false;
2735 static attribute_t attributes[] = {
2736 { "noreturn", AST_FLAG_NORETURN },
2737 { "inline", AST_FLAG_INLINE },
2738 { "eraseable", AST_FLAG_ERASEABLE },
2739 { "accumulate", AST_FLAG_ACCUMULATE },
2740 { "last", AST_FLAG_FINAL_DECL }
2747 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2749 /* parse an attribute */
2750 if (!parser_next(parser)) {
2751 parseerror(parser, "expected attribute after `[[`");
2756 for (i = 0; i < GMQCC_ARRAY_COUNT(attributes); i++) {
2757 if (!strcmp(parser_tokval(parser), attributes[i].name)) {
2758 flags |= attributes[i].flag;
2759 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2760 parseerror(parser, "`%s` attribute has no parameters, expected `]]`",
2761 attributes[i].name);
2769 if (i != GMQCC_ARRAY_COUNT(attributes))
2773 if (!strcmp(parser_tokval(parser), "noref")) {
2775 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2776 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2781 else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
2782 flags |= AST_FLAG_ALIAS;
2785 if (!parser_next(parser)) {
2786 parseerror(parser, "parse error in attribute");
2790 if (parser->tok == '(') {
2791 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2792 parseerror(parser, "`alias` attribute missing parameter");
2796 *message = util_strdup(parser_tokval(parser));
2798 if (!parser_next(parser)) {
2799 parseerror(parser, "parse error in attribute");
2803 if (parser->tok != ')') {
2804 parseerror(parser, "`alias` attribute expected `)` after parameter");
2808 if (!parser_next(parser)) {
2809 parseerror(parser, "parse error in attribute");
2814 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2815 parseerror(parser, "`alias` attribute expected `]]`");
2819 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2820 flags |= AST_FLAG_DEPRECATED;
2823 if (!parser_next(parser)) {
2824 parseerror(parser, "parse error in attribute");
2828 if (parser->tok == '(') {
2829 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2830 parseerror(parser, "`deprecated` attribute missing parameter");
2834 *message = util_strdup(parser_tokval(parser));
2836 if (!parser_next(parser)) {
2837 parseerror(parser, "parse error in attribute");
2841 if(parser->tok != ')') {
2842 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2846 if (!parser_next(parser)) {
2847 parseerror(parser, "parse error in attribute");
2852 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2853 parseerror(parser, "`deprecated` attribute expected `]]`");
2856 if (*message) mem_d(*message);
2862 else if (!strcmp(parser_tokval(parser), "coverage") && !(flags & AST_FLAG_COVERAGE)) {
2863 flags |= AST_FLAG_COVERAGE;
2864 if (!parser_next(parser)) {
2866 parseerror(parser, "parse error in coverage attribute");
2870 if (parser->tok == '(') {
2871 if (!parser_next(parser)) {
2873 parseerror(parser, "invalid parameter for coverage() attribute\n"
2874 "valid are: block");
2878 if (parser->tok != ')') {
2880 if (parser->tok != TOKEN_IDENT)
2881 goto bad_coverage_arg;
2882 if (!strcmp(parser_tokval(parser), "block"))
2883 flags |= AST_FLAG_BLOCK_COVERAGE;
2884 else if (!strcmp(parser_tokval(parser), "none"))
2885 flags &= ~(AST_FLAG_COVERAGE_MASK);
2887 goto bad_coverage_arg;
2888 if (!parser_next(parser))
2889 goto error_in_coverage;
2890 if (parser->tok == ',') {
2891 if (!parser_next(parser))
2892 goto error_in_coverage;
2894 } while (parser->tok != ')');
2896 if (parser->tok != ')' || !parser_next(parser))
2897 goto error_in_coverage;
2899 /* without parameter [[coverage]] equals [[coverage(block)]] */
2900 flags |= AST_FLAG_BLOCK_COVERAGE;
2905 /* Skip tokens until we hit a ]] */
2906 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2907 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2908 if (!parser_next(parser)) {
2909 parseerror(parser, "error inside attribute");
2916 else if (with_local && !strcmp(parser_tokval(parser), "static"))
2918 else if (!strcmp(parser_tokval(parser), "const"))
2920 else if (!strcmp(parser_tokval(parser), "var"))
2922 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2924 else if (!strcmp(parser_tokval(parser), "noref"))
2926 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2933 if (!parser_next(parser))
2943 *is_static = had_static;
2947 parseerror(parser, "parse error after variable qualifier");
2952 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2953 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2958 /* skip the 'while' and get the body */
2959 if (!parser_next(parser)) {
2960 if (OPTS_FLAG(LOOP_LABELS))
2961 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2963 parseerror(parser, "expected 'switch' operand in parenthesis");
2967 if (parser->tok == ':') {
2968 if (!OPTS_FLAG(LOOP_LABELS))
2969 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2970 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2971 parseerror(parser, "expected loop label");
2974 label = util_strdup(parser_tokval(parser));
2975 if (!parser_next(parser)) {
2977 parseerror(parser, "expected 'switch' operand in parenthesis");
2982 if (parser->tok != '(') {
2983 parseerror(parser, "expected 'switch' operand in parenthesis");
2987 parser->breaks.push_back(label);
2989 rv = parse_switch_go(parser, block, out);
2992 if (parser->breaks.back() != label) {
2993 parseerror(parser, "internal error: label stack corrupted");
2999 parser->breaks.pop_back();
3004 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
3006 ast_expression *operand;
3009 ast_switch *switchnode;
3010 ast_switch_case swcase;
3013 bool noref, is_static;
3014 uint32_t qflags = 0;
3016 lex_ctx_t ctx = parser_ctx(parser);
3018 (void)block; /* not touching */
3021 /* parse into the expression */
3022 if (!parser_next(parser)) {
3023 parseerror(parser, "expected switch operand");
3026 /* parse the operand */
3027 operand = parse_expression_leave(parser, false, false, false);
3031 switchnode = ast_switch_new(ctx, operand);
3034 if (parser->tok != ')') {
3035 ast_delete(switchnode);
3036 parseerror(parser, "expected closing paren after 'switch' operand");
3040 /* parse over the opening paren */
3041 if (!parser_next(parser) || parser->tok != '{') {
3042 ast_delete(switchnode);
3043 parseerror(parser, "expected list of cases");
3047 if (!parser_next(parser)) {
3048 ast_delete(switchnode);
3049 parseerror(parser, "expected 'case' or 'default'");
3053 /* new block; allow some variables to be declared here */
3054 parser_enterblock(parser);
3057 if (parser->tok == TOKEN_IDENT)
3058 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3059 if (typevar || parser->tok == TOKEN_TYPENAME) {
3060 if (!parse_variable(parser, block, true, CV_NONE, typevar, false, false, 0, NULL)) {
3061 ast_delete(switchnode);
3066 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
3068 if (cvq == CV_WRONG) {
3069 ast_delete(switchnode);
3072 if (!parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, NULL)) {
3073 ast_delete(switchnode);
3082 while (parser->tok != '}') {
3083 ast_block *caseblock;
3085 if (!strcmp(parser_tokval(parser), "case")) {
3086 if (!parser_next(parser)) {
3087 ast_delete(switchnode);
3088 parseerror(parser, "expected expression for case");
3091 swcase.value = parse_expression_leave(parser, false, false, false);
3092 if (!swcase.value) {
3093 ast_delete(switchnode);
3094 parseerror(parser, "expected expression for case");
3097 if (!OPTS_FLAG(RELAXED_SWITCH)) {
3098 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
3099 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
3105 else if (!strcmp(parser_tokval(parser), "default")) {
3106 swcase.value = NULL;
3107 if (!parser_next(parser)) {
3108 ast_delete(switchnode);
3109 parseerror(parser, "expected colon");
3114 ast_delete(switchnode);
3115 parseerror(parser, "expected 'case' or 'default'");
3119 /* Now the colon and body */
3120 if (parser->tok != ':') {
3121 if (swcase.value) ast_unref(swcase.value);
3122 ast_delete(switchnode);
3123 parseerror(parser, "expected colon");
3127 if (!parser_next(parser)) {
3128 if (swcase.value) ast_unref(swcase.value);
3129 ast_delete(switchnode);
3130 parseerror(parser, "expected statements or case");
3133 caseblock = ast_block_new(parser_ctx(parser));
3135 if (swcase.value) ast_unref(swcase.value);
3136 ast_delete(switchnode);
3139 swcase.code = (ast_expression*)caseblock;
3140 switchnode->cases.push_back(swcase);
3142 ast_expression *expr;
3143 if (parser->tok == '}')
3145 if (parser->tok == TOKEN_KEYWORD) {
3146 if (!strcmp(parser_tokval(parser), "case") ||
3147 !strcmp(parser_tokval(parser), "default"))
3152 if (!parse_statement(parser, caseblock, &expr, true)) {
3153 ast_delete(switchnode);
3158 if (!ast_block_add_expr(caseblock, expr)) {
3159 ast_delete(switchnode);
3165 parser_leaveblock(parser);
3168 if (parser->tok != '}') {
3169 ast_delete(switchnode);
3170 parseerror(parser, "expected closing paren of case list");
3173 if (!parser_next(parser)) {
3174 ast_delete(switchnode);
3175 parseerror(parser, "parse error after switch");
3178 *out = (ast_expression*)switchnode;
3182 /* parse computed goto sides */
3183 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3184 ast_expression *on_true;
3185 ast_expression *on_false;
3186 ast_expression *cond;
3191 if (ast_istype(*side, ast_ternary)) {
3192 ast_ternary *tern = (ast_ternary*)*side;
3193 on_true = parse_goto_computed(parser, &tern->on_true);
3194 on_false = parse_goto_computed(parser, &tern->on_false);
3196 if (!on_true || !on_false) {
3197 parseerror(parser, "expected label or expression in ternary");
3198 if (on_true) ast_unref(on_true);
3199 if (on_false) ast_unref(on_false);
3207 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3208 } else if (ast_istype(*side, ast_label)) {
3209 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3210 ast_goto_set_label(gt, ((ast_label*)*side));
3212 return (ast_expression*)gt;
3217 static bool parse_goto(parser_t *parser, ast_expression **out)
3219 ast_goto *gt = NULL;
3220 ast_expression *lbl;
3222 if (!parser_next(parser))
3225 if (parser->tok != TOKEN_IDENT) {
3226 ast_expression *expression;
3228 /* could be an expression i.e computed goto :-) */
3229 if (parser->tok != '(') {
3230 parseerror(parser, "expected label name after `goto`");
3234 /* failed to parse expression for goto */
3235 if (!(expression = parse_expression(parser, false, true)) ||
3236 !(*out = parse_goto_computed(parser, &expression))) {
3237 parseerror(parser, "invalid goto expression");
3239 ast_unref(expression);
3246 /* not computed goto */
3247 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3248 lbl = parser_find_label(parser, gt->name);
3250 if (!ast_istype(lbl, ast_label)) {
3251 parseerror(parser, "internal error: label is not an ast_label");
3255 ast_goto_set_label(gt, (ast_label*)lbl);
3258 parser->gotos.push_back(gt);
3260 if (!parser_next(parser) || parser->tok != ';') {
3261 parseerror(parser, "semicolon expected after goto label");
3264 if (!parser_next(parser)) {
3265 parseerror(parser, "parse error after goto");
3269 *out = (ast_expression*)gt;
3273 static bool parse_skipwhite(parser_t *parser)
3276 if (!parser_next(parser))
3278 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3279 return parser->tok < TOKEN_ERROR;
3282 static bool parse_eol(parser_t *parser)
3284 if (!parse_skipwhite(parser))
3286 return parser->tok == TOKEN_EOL;
3289 static bool parse_pragma_do(parser_t *parser)
3291 if (!parser_next(parser) ||
3292 parser->tok != TOKEN_IDENT ||
3293 strcmp(parser_tokval(parser), "pragma"))
3295 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3298 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3299 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3303 if (!strcmp(parser_tokval(parser), "noref")) {
3304 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3305 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3308 parser->noref = !!parser_token(parser)->constval.i;
3309 if (!parse_eol(parser)) {
3310 parseerror(parser, "parse error after `noref` pragma");
3316 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3319 while (!parse_eol(parser)) {
3320 parser_next(parser);
3329 static bool parse_pragma(parser_t *parser)
3332 parser->lex->flags.preprocessing = true;
3333 parser->lex->flags.mergelines = true;
3334 rv = parse_pragma_do(parser);
3335 if (parser->tok != TOKEN_EOL) {
3336 parseerror(parser, "junk after pragma");
3339 parser->lex->flags.preprocessing = false;
3340 parser->lex->flags.mergelines = false;
3341 if (!parser_next(parser)) {
3342 parseerror(parser, "parse error after pragma");
3348 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3350 bool noref, is_static;
3352 uint32_t qflags = 0;
3353 ast_value *typevar = NULL;
3354 char *vstring = NULL;
3358 if (parser->tok == TOKEN_IDENT)
3359 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3361 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.' || parser->tok == TOKEN_DOTS)
3363 /* local variable */
3365 parseerror(parser, "cannot declare a variable from here");
3368 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3369 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3372 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3376 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3378 if (cvq == CV_WRONG)
3380 return parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, vstring);
3382 else if (parser->tok == TOKEN_KEYWORD)
3384 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3389 if (!parser_next(parser)) {
3390 parseerror(parser, "parse error after __builtin_debug_printtype");
3394 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3396 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3397 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3398 if (!parser_next(parser)) {
3399 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3405 if (!parse_statement(parser, block, out, allow_cases))
3408 con_out("__builtin_debug_printtype: got no output node\n");
3411 ast_type_to_string(*out, ty, sizeof(ty));
3412 con_out("__builtin_debug_printtype: `%s`\n", ty);
3417 else if (!strcmp(parser_tokval(parser), "return"))
3419 return parse_return(parser, block, out);
3421 else if (!strcmp(parser_tokval(parser), "if"))
3423 return parse_if(parser, block, out);
3425 else if (!strcmp(parser_tokval(parser), "while"))
3427 return parse_while(parser, block, out);
3429 else if (!strcmp(parser_tokval(parser), "do"))
3431 return parse_dowhile(parser, block, out);
3433 else if (!strcmp(parser_tokval(parser), "for"))
3435 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
3436 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3439 return parse_for(parser, block, out);
3441 else if (!strcmp(parser_tokval(parser), "break"))
3443 return parse_break_continue(parser, block, out, false);
3445 else if (!strcmp(parser_tokval(parser), "continue"))
3447 return parse_break_continue(parser, block, out, true);
3449 else if (!strcmp(parser_tokval(parser), "switch"))
3451 return parse_switch(parser, block, out);
3453 else if (!strcmp(parser_tokval(parser), "case") ||
3454 !strcmp(parser_tokval(parser), "default"))
3457 parseerror(parser, "unexpected 'case' label");
3462 else if (!strcmp(parser_tokval(parser), "goto"))
3464 return parse_goto(parser, out);
3466 else if (!strcmp(parser_tokval(parser), "typedef"))
3468 if (!parser_next(parser)) {
3469 parseerror(parser, "expected type definition after 'typedef'");
3472 return parse_typedef(parser);
3474 parseerror(parser, "Unexpected keyword: `%s'", parser_tokval(parser));
3477 else if (parser->tok == '{')
3480 inner = parse_block(parser);
3483 *out = (ast_expression*)inner;
3486 else if (parser->tok == ':')
3490 if (!parser_next(parser)) {
3491 parseerror(parser, "expected label name");
3494 if (parser->tok != TOKEN_IDENT) {
3495 parseerror(parser, "label must be an identifier");
3498 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3500 if (!label->undefined) {
3501 parseerror(parser, "label `%s` already defined", label->name);
3504 label->undefined = false;
3507 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3508 parser->labels.push_back(label);
3510 *out = (ast_expression*)label;
3511 if (!parser_next(parser)) {
3512 parseerror(parser, "parse error after label");
3515 for (i = 0; i < parser->gotos.size(); ++i) {
3516 if (!strcmp(parser->gotos[i]->name, label->name)) {
3517 ast_goto_set_label(parser->gotos[i], label);
3518 parser->gotos.erase(parser->gotos.begin() + i);
3524 else if (parser->tok == ';')
3526 if (!parser_next(parser)) {
3527 parseerror(parser, "parse error after empty statement");
3534 lex_ctx_t ctx = parser_ctx(parser);
3535 ast_expression *exp = parse_expression(parser, false, false);
3539 if (!ast_side_effects(exp)) {
3540 if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3547 static bool parse_enum(parser_t *parser)
3550 bool reverse = false;
3552 ast_value **values = NULL;
3553 ast_value *var = NULL;
3556 ast_expression *old;
3558 if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
3559 parseerror(parser, "expected `{` or `:` after `enum` keyword");
3563 /* enumeration attributes (can add more later) */
3564 if (parser->tok == ':') {
3565 if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
3566 parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
3571 if (!strcmp(parser_tokval(parser), "flag")) {
3575 else if (!strcmp(parser_tokval(parser), "reverse")) {
3579 parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
3583 if (!parser_next(parser) || parser->tok != '{') {
3584 parseerror(parser, "expected `{` after enum attribute ");
3590 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
3591 if (parser->tok == '}') {
3592 /* allow an empty enum */
3595 parseerror(parser, "expected identifier or `}`");
3599 old = parser_find_field(parser, parser_tokval(parser));
3601 old = parser_find_global(parser, parser_tokval(parser));
3603 parseerror(parser, "value `%s` has already been declared here: %s:%i",
3604 parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
3608 var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
3609 vec_push(values, var);
3610 var->cvq = CV_CONST;
3611 var->hasvalue = true;
3613 /* for flagged enumerations increment in POTs of TWO */
3614 var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
3615 parser_addglobal(parser, var->name, (ast_expression*)var);
3617 if (!parser_next(parser)) {
3618 parseerror(parser, "expected `=`, `}` or comma after identifier");
3622 if (parser->tok == ',')
3624 if (parser->tok == '}')
3626 if (parser->tok != '=') {
3627 parseerror(parser, "expected `=`, `}` or comma after identifier");
3631 if (!parser_next(parser)) {
3632 parseerror(parser, "expected expression after `=`");
3636 /* We got a value! */
3637 old = parse_expression_leave(parser, true, false, false);
3638 asvalue = (ast_value*)old;
3639 if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
3640 compile_error(ast_ctx(var), "constant value or expression expected");
3643 num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
3645 if (parser->tok == '}')
3647 if (parser->tok != ',') {
3648 parseerror(parser, "expected `}` or comma after expression");
3653 /* patch them all (for reversed attribute) */
3656 for (i = 0; i < vec_size(values); i++)
3657 values[i]->constval.vfloat = vec_size(values) - i - 1;
3660 if (parser->tok != '}') {
3661 parseerror(parser, "internal error: breaking without `}`");
3665 if (!parser_next(parser) || parser->tok != ';') {
3666 parseerror(parser, "expected semicolon after enumeration");
3670 if (!parser_next(parser)) {
3671 parseerror(parser, "parse error after enumeration");
3683 static bool parse_block_into(parser_t *parser, ast_block *block)
3687 parser_enterblock(parser);
3689 if (!parser_next(parser)) { /* skip the '{' */
3690 parseerror(parser, "expected function body");
3694 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3696 ast_expression *expr = NULL;
3697 if (parser->tok == '}')
3700 if (!parse_statement(parser, block, &expr, false)) {
3701 /* parseerror(parser, "parse error"); */
3707 if (!ast_block_add_expr(block, expr)) {
3714 if (parser->tok != '}') {
3717 (void)parser_next(parser);
3721 if (!parser_leaveblock(parser))
3723 return retval && !!block;
3726 static ast_block* parse_block(parser_t *parser)
3729 block = ast_block_new(parser_ctx(parser));
3732 if (!parse_block_into(parser, block)) {
3733 ast_block_delete(block);
3739 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3741 if (parser->tok == '{') {
3742 *out = (ast_expression*)parse_block(parser);
3745 return parse_statement(parser, NULL, out, false);
3748 static bool create_vector_members(ast_value *var, ast_member **me)
3751 size_t len = strlen(var->name);
3753 for (i = 0; i < 3; ++i) {
3754 char *name = (char*)mem_a(len+3);
3755 memcpy(name, var->name, len);
3757 name[len+1] = 'x'+i;
3759 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3768 do { ast_member_delete(me[--i]); } while(i);
3772 static bool parse_function_body(parser_t *parser, ast_value *var)
3774 ast_block *block = NULL;
3778 ast_expression *framenum = NULL;
3779 ast_expression *nextthink = NULL;
3780 /* None of the following have to be deleted */
3781 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3782 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3783 bool has_frame_think;
3787 has_frame_think = false;
3788 old = parser->function;
3790 if (var->expression.flags & AST_FLAG_ALIAS) {
3791 parseerror(parser, "function aliases cannot have bodies");
3795 if (parser->gotos.size() || parser->labels.size()) {
3796 parseerror(parser, "gotos/labels leaking");
3800 if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
3801 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3802 "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
3808 if (parser->tok == '[') {
3809 /* got a frame definition: [ framenum, nextthink ]
3810 * this translates to:
3811 * self.frame = framenum;
3812 * self.nextthink = time + 0.1;
3813 * self.think = nextthink;
3817 fld_think = parser_find_field(parser, "think");
3818 fld_nextthink = parser_find_field(parser, "nextthink");
3819 fld_frame = parser_find_field(parser, "frame");
3820 if (!fld_think || !fld_nextthink || !fld_frame) {
3821 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3822 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3825 gbl_time = parser_find_global(parser, "time");
3826 gbl_self = parser_find_global(parser, "self");
3827 if (!gbl_time || !gbl_self) {
3828 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3829 parseerror(parser, "please declare the following globals: `time`, `self`");
3833 if (!parser_next(parser))
3836 framenum = parse_expression_leave(parser, true, false, false);
3838 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3841 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3842 ast_unref(framenum);
3843 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3847 if (parser->tok != ',') {
3848 ast_unref(framenum);
3849 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3850 parseerror(parser, "Got a %i\n", parser->tok);
3854 if (!parser_next(parser)) {
3855 ast_unref(framenum);
3859 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3861 /* qc allows the use of not-yet-declared functions here
3862 * - this automatically creates a prototype */
3863 ast_value *thinkfunc;
3864 ast_expression *functype = fld_think->next;
3866 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->vtype);
3867 if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
3868 ast_unref(framenum);
3869 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3872 ast_type_adopt(thinkfunc, functype);
3874 if (!parser_next(parser)) {
3875 ast_unref(framenum);
3876 ast_delete(thinkfunc);
3880 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
3882 nextthink = (ast_expression*)thinkfunc;
3885 nextthink = parse_expression_leave(parser, true, false, false);
3887 ast_unref(framenum);
3888 parseerror(parser, "expected a think-function in [frame,think] notation");
3893 if (!ast_istype(nextthink, ast_value)) {
3894 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3898 if (retval && parser->tok != ']') {
3899 parseerror(parser, "expected closing `]` for [frame,think] notation");
3903 if (retval && !parser_next(parser)) {
3907 if (retval && parser->tok != '{') {
3908 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3913 ast_unref(nextthink);
3914 ast_unref(framenum);
3918 has_frame_think = true;
3921 block = ast_block_new(parser_ctx(parser));
3923 parseerror(parser, "failed to allocate block");
3924 if (has_frame_think) {
3925 ast_unref(nextthink);
3926 ast_unref(framenum);
3931 if (has_frame_think) {
3932 if (!OPTS_FLAG(EMULATE_STATE)) {
3933 ast_state *state_op = ast_state_new(parser_ctx(parser), framenum, nextthink);
3934 if (!ast_block_add_expr(block, (ast_expression*)state_op)) {
3935 parseerror(parser, "failed to generate state op for [frame,think]");
3936 ast_unref(nextthink);
3937 ast_unref(framenum);
3942 /* emulate OP_STATE in code: */
3944 ast_expression *self_frame;
3945 ast_expression *self_nextthink;
3946 ast_expression *self_think;
3947 ast_expression *time_plus_1;
3948 ast_store *store_frame;
3949 ast_store *store_nextthink;
3950 ast_store *store_think;
3952 float frame_delta = 1.0f / (float)OPTS_OPTION_U32(OPTION_STATE_FPS);
3954 ctx = parser_ctx(parser);
3955 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3956 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3957 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3959 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3960 gbl_time, (ast_expression*)fold_constgen_float(parser->fold, frame_delta, false));
3962 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3963 if (self_frame) ast_delete(self_frame);
3964 if (self_nextthink) ast_delete(self_nextthink);
3965 if (self_think) ast_delete(self_think);
3966 if (time_plus_1) ast_delete(time_plus_1);
3972 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3973 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3974 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3977 ast_delete(self_frame);
3980 if (!store_nextthink) {
3981 ast_delete(self_nextthink);
3985 ast_delete(self_think);
3989 if (store_frame) ast_delete(store_frame);
3990 if (store_nextthink) ast_delete(store_nextthink);
3991 if (store_think) ast_delete(store_think);
3994 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3995 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3996 !ast_block_add_expr(block, (ast_expression*)store_think))
4003 parseerror(parser, "failed to generate code for [frame,think]");
4004 ast_unref(nextthink);
4005 ast_unref(framenum);
4012 if (var->hasvalue) {
4013 if (!(var->expression.flags & AST_FLAG_ACCUMULATE)) {
4014 parseerror(parser, "function `%s` declared with multiple bodies", var->name);
4015 ast_block_delete(block);
4018 func = var->constval.vfunc;
4021 parseerror(parser, "internal error: NULL function: `%s`", var->name);
4022 ast_block_delete(block);
4026 func = ast_function_new(ast_ctx(var), var->name, var);
4029 parseerror(parser, "failed to allocate function for `%s`", var->name);
4030 ast_block_delete(block);
4033 parser->functions.push_back(func);
4036 parser_enterblock(parser);
4038 for (auto &it : var->expression.params) {
4042 if (it->expression.vtype != TYPE_VECTOR &&
4043 (it->expression.vtype != TYPE_FIELD ||
4044 it->expression.next->vtype != TYPE_VECTOR))
4049 if (!create_vector_members(it, me)) {
4050 ast_block_delete(block);
4054 for (e = 0; e < 3; ++e) {
4055 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
4056 ast_block_collect(block, (ast_expression*)me[e]);
4060 if (var->argcounter && !func->argc) {
4061 ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
4062 parser_addlocal(parser, argc->name, (ast_expression*)argc);
4066 if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC && !func->varargs) {
4068 ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
4069 varargs->expression.flags |= AST_FLAG_IS_VARARG;
4070 varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
4071 varargs->expression.count = 0;
4072 util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
4073 if (!parser_create_array_setter_proto(parser, varargs, name)) {
4074 ast_delete(varargs);
4075 ast_block_delete(block);
4078 util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
4079 if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
4080 ast_delete(varargs);
4081 ast_block_delete(block);
4084 func->varargs = varargs;
4085 func->fixedparams = (ast_value*)fold_constgen_float(parser->fold, var->expression.params.size(), false);
4088 parser->function = func;
4089 if (!parse_block_into(parser, block)) {
4090 ast_block_delete(block);
4094 func->blocks.push_back(block);
4096 parser->function = old;
4097 if (!parser_leaveblock(parser))
4099 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
4100 parseerror(parser, "internal error: local scopes left");
4104 if (parser->tok == ';')
4105 return parser_next(parser);
4106 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4107 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
4111 (void)!parser_leaveblock(parser);
4112 parser->functions.pop_back();
4113 ast_function_delete(func);
4114 var->constval.vfunc = NULL;
4117 parser->function = old;
4121 static ast_expression *array_accessor_split(
4126 ast_expression *left,
4127 ast_expression *right
4133 lex_ctx_t ctx = ast_ctx(array);
4135 if (!left || !right) {
4136 if (left) ast_delete(left);
4137 if (right) ast_delete(right);
4141 cmp = ast_binary_new(ctx, INSTR_LT,
4142 (ast_expression*)index,
4143 (ast_expression*)fold_constgen_float(parser->fold, middle, false));
4147 parseerror(parser, "internal error: failed to create comparison for array setter");
4151 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
4153 ast_delete(cmp); /* will delete left and right */
4154 parseerror(parser, "internal error: failed to create conditional jump for array setter");
4158 return (ast_expression*)ifthen;
4161 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
4163 lex_ctx_t ctx = ast_ctx(array);
4165 if (from+1 == afterend) {
4166 /* set this value */
4169 ast_array_index *subscript;
4171 int assignop = type_store_instr[value->expression.vtype];
4173 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4174 assignop = INSTR_STORE_V;
4176 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from, false));
4180 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
4182 ast_delete(subscript);
4186 block = ast_block_new(ctx);
4192 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4197 ret = ast_return_new(ctx, NULL);
4203 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4208 return (ast_expression*)block;
4210 ast_expression *left, *right;
4211 size_t diff = afterend - from;
4212 size_t middle = from + diff/2;
4213 left = array_setter_node(parser, array, index, value, from, middle);
4214 right = array_setter_node(parser, array, index, value, middle, afterend);
4215 return array_accessor_split(parser, array, index, middle, left, right);
4219 static ast_expression *array_field_setter_node(
4228 lex_ctx_t ctx = ast_ctx(array);
4230 if (from+1 == afterend) {
4231 /* set this value */
4234 ast_entfield *entfield;
4235 ast_array_index *subscript;
4237 int assignop = type_storep_instr[value->expression.vtype];
4239 if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
4240 assignop = INSTR_STOREP_V;
4242 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from, false));
4246 subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
4247 subscript->expression.vtype = TYPE_FIELD;
4249 entfield = ast_entfield_new_force(ctx,
4250 (ast_expression*)entity,
4251 (ast_expression*)subscript,
4252 (ast_expression*)subscript);
4254 ast_delete(subscript);
4258 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
4260 ast_delete(entfield);
4264 block = ast_block_new(ctx);
4270 if (!ast_block_add_expr(block, (ast_expression*)st)) {
4275 ret = ast_return_new(ctx, NULL);
4281 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
4286 return (ast_expression*)block;
4288 ast_expression *left, *right;
4289 size_t diff = afterend - from;
4290 size_t middle = from + diff/2;
4291 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
4292 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
4293 return array_accessor_split(parser, array, index, middle, left, right);
4297 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
4299 lex_ctx_t ctx = ast_ctx(array);
4301 if (from+1 == afterend) {
4303 ast_array_index *subscript;
4305 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)fold_constgen_float(parser->fold, from, false));
4309 ret = ast_return_new(ctx, (ast_expression*)subscript);
4311 ast_delete(subscript);
4315 return (ast_expression*)ret;
4317 ast_expression *left, *right;
4318 size_t diff = afterend - from;
4319 size_t middle = from + diff/2;
4320 left = array_getter_node(parser, array, index, from, middle);
4321 right = array_getter_node(parser, array, index, middle, afterend);
4322 return array_accessor_split(parser, array, index, middle, left, right);
4326 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4328 ast_function *func = NULL;
4329 ast_value *fval = NULL;
4330 ast_block *body = NULL;
4332 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4334 parseerror(parser, "failed to create accessor function value");
4337 fval->expression.flags &= ~(AST_FLAG_COVERAGE_MASK);
4339 func = ast_function_new(ast_ctx(array), funcname, fval);
4342 parseerror(parser, "failed to create accessor function node");
4346 body = ast_block_new(ast_ctx(array));
4348 parseerror(parser, "failed to create block for array accessor");
4354 func->blocks.push_back(body);
4357 parser->accessors.push_back(fval);
4362 static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
4364 ast_value *index = NULL;
4365 ast_value *value = NULL;
4369 if (!ast_istype(array->expression.next, ast_value)) {
4370 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4374 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4376 func = fval->constval.vfunc;
4377 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4379 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4380 value = ast_value_copy((ast_value*)array->expression.next);
4382 if (!index || !value) {
4383 parseerror(parser, "failed to create locals for array accessor");
4386 (void)!ast_value_set_name(value, "value"); /* not important */
4387 fval->expression.params.push_back(index);
4388 fval->expression.params.push_back(value);
4390 array->setter = fval;
4393 if (index) ast_delete(index);
4394 if (value) ast_delete(value);
4400 static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
4402 ast_expression *root = NULL;
4403 root = array_setter_node(parser, array,
4404 array->setter->expression.params[0],
4405 array->setter->expression.params[1],
4406 0, array->expression.count);
4408 parseerror(parser, "failed to build accessor search tree");
4411 if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
4418 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4420 if (!parser_create_array_setter_proto(parser, array, funcname))
4422 return parser_create_array_setter_impl(parser, array);
4425 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4427 ast_expression *root = NULL;
4428 ast_value *entity = NULL;
4429 ast_value *index = NULL;
4430 ast_value *value = NULL;
4434 if (!ast_istype(array->expression.next, ast_value)) {
4435 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4439 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4441 func = fval->constval.vfunc;
4442 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4444 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4445 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4446 value = ast_value_copy((ast_value*)array->expression.next);
4447 if (!entity || !index || !value) {
4448 parseerror(parser, "failed to create locals for array accessor");
4451 (void)!ast_value_set_name(value, "value"); /* not important */
4452 fval->expression.params.push_back(entity);
4453 fval->expression.params.push_back(index);
4454 fval->expression.params.push_back(value);
4456 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4458 parseerror(parser, "failed to build accessor search tree");
4462 array->setter = fval;
4463 return ast_block_add_expr(func->blocks[0], root);
4465 if (entity) ast_delete(entity);
4466 if (index) ast_delete(index);
4467 if (value) ast_delete(value);
4468 if (root) ast_delete(root);
4474 static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4476 ast_value *index = NULL;
4480 /* NOTE: checking array->expression.next rather than elemtype since
4481 * for fields elemtype is a temporary fieldtype.
4483 if (!ast_istype(array->expression.next, ast_value)) {
4484 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4488 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4490 func = fval->constval.vfunc;
4491 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4493 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4496 parseerror(parser, "failed to create locals for array accessor");
4499 fval->expression.params.push_back(index);
4501 array->getter = fval;
4504 if (index) ast_delete(index);
4510 static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
4512 ast_expression *root = NULL;
4514 root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
4516 parseerror(parser, "failed to build accessor search tree");
4519 if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
4526 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4528 if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
4530 return parser_create_array_getter_impl(parser, array);
4533 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4535 lex_ctx_t ctx = parser_ctx(parser);
4536 std::vector<ast_value *> params;
4539 bool variadic = false;
4540 ast_value *varparam = NULL;
4541 char *argcounter = NULL;
4543 /* for the sake of less code we parse-in in this function */
4544 if (!parser_next(parser)) {
4546 parseerror(parser, "expected parameter list");
4550 /* parse variables until we hit a closing paren */
4551 while (parser->tok != ')') {
4552 bool is_varargs = false;
4555 /* there must be commas between them */
4556 if (parser->tok != ',') {
4557 parseerror(parser, "expected comma or end of parameter list");
4560 if (!parser_next(parser)) {
4561 parseerror(parser, "expected parameter");
4567 ast_value *param = parse_typename(parser, NULL, NULL, &is_varargs);
4568 if (!param && !is_varargs)
4571 /* '...' indicates a varargs function */
4573 if (parser->tok != ')' && parser->tok != TOKEN_IDENT) {
4574 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4577 if (parser->tok == TOKEN_IDENT) {
4578 argcounter = util_strdup(parser_tokval(parser));
4579 if (!parser_next(parser) || parser->tok != ')') {
4580 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4585 params.push_back(param);
4586 if (param->expression.vtype >= TYPE_VARIANT) {
4587 char tname[1024]; /* typename is reserved in C++ */
4588 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4589 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4592 /* type-restricted varargs */
4593 if (parser->tok == TOKEN_DOTS) {
4595 varparam = params.back();
4597 if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
4598 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4601 if (parser->tok == TOKEN_IDENT) {
4602 argcounter = util_strdup(parser_tokval(parser));
4603 ast_value_set_name(param, argcounter);
4604 if (!parser_next(parser) || parser->tok != ')') {
4605 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4610 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC && param->name[0] == '<') {
4611 parseerror(parser, "parameter name omitted");
4617 if (params.size() == 1 && params[0]->expression.vtype == TYPE_VOID)
4621 if (params.size() > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4622 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4625 if (!parser_next(parser)) {
4626 parseerror(parser, "parse error after typename");
4630 /* now turn 'var' into a function type */
4631 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4632 fval->expression.next = (ast_expression*)var;
4634 fval->expression.flags |= AST_FLAG_VARIADIC;
4637 var->expression.params = params;
4638 var->expression.varparam = (ast_expression*)varparam;
4639 var->argcounter = argcounter;
4647 ast_delete(varparam);
4649 for (auto &it : params)
4654 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4656 ast_expression *cexp;
4657 ast_value *cval, *tmp;
4660 ctx = parser_ctx(parser);
4662 if (!parser_next(parser)) {
4664 parseerror(parser, "expected array-size");
4668 if (parser->tok != ']') {
4669 cexp = parse_expression_leave(parser, true, false, false);
4671 if (!cexp || !ast_istype(cexp, ast_value)) {
4675 parseerror(parser, "expected array-size as constant positive integer");
4678 cval = (ast_value*)cexp;
4685 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4686 tmp->expression.next = (ast_expression*)var;
4690 if (cval->expression.vtype == TYPE_INTEGER)
4691 tmp->expression.count = cval->constval.vint;
4692 else if (cval->expression.vtype == TYPE_FLOAT)
4693 tmp->expression.count = cval->constval.vfloat;
4697 parseerror(parser, "array-size must be a positive integer constant");
4703 var->expression.count = -1;
4704 var->expression.flags |= AST_FLAG_ARRAY_INIT;
4707 if (parser->tok != ']') {
4709 parseerror(parser, "expected ']' after array-size");
4712 if (!parser_next(parser)) {
4714 parseerror(parser, "error after parsing array size");
4720 /* Parse a complete typename.
4721 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4722 * but when parsing variables separated by comma
4723 * 'storebase' should point to where the base-type should be kept.
4724 * The base type makes up every bit of type information which comes *before* the
4727 * NOTE: The value must either be named, have a NULL name, or a name starting
4728 * with '<'. In the first case, this will be the actual variable or type
4729 * name, in the other cases it is assumed that the name will appear
4730 * later, and an error is generated otherwise.
4732 * The following will be parsed in its entirety:
4734 * The 'basetype' in this case is 'void()'
4735 * and if there's a comma after it, say:
4737 * then the type-information 'void()' can be stored in 'storebase'
4739 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef, bool *is_vararg)
4741 ast_value *var, *tmp;
4744 const char *name = NULL;
4745 bool isfield = false;
4746 bool wasarray = false;
4747 size_t morefields = 0;
4749 bool vararg = (parser->tok == TOKEN_DOTS);
4751 ctx = parser_ctx(parser);
4753 /* types may start with a dot */
4754 if (parser->tok == '.' || parser->tok == TOKEN_DOTS) {
4756 if (parser->tok == TOKEN_DOTS)
4758 /* if we parsed a dot we need a typename now */
4759 if (!parser_next(parser)) {
4760 parseerror(parser, "expected typename for field definition");
4764 /* Further dots are handled seperately because they won't be part of the
4768 if (parser->tok == '.')
4770 else if (parser->tok == TOKEN_DOTS)
4775 if (!parser_next(parser)) {
4776 parseerror(parser, "expected typename for field definition");
4781 if (parser->tok == TOKEN_IDENT)
4782 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4783 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4784 if (vararg && is_vararg) {
4788 parseerror(parser, "expected typename");
4792 /* generate the basic type value */
4793 if (cached_typedef) {
4794 var = ast_value_copy(cached_typedef);
4795 ast_value_set_name(var, "<type(from_def)>");
4797 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4799 for (; morefields; --morefields) {
4800 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4801 tmp->expression.next = (ast_expression*)var;
4805 /* do not yet turn into a field - remember:
4806 * .void() foo; is a field too
4807 * .void()() foo; is a function
4811 if (!parser_next(parser)) {
4813 parseerror(parser, "parse error after typename");
4817 /* an opening paren now starts the parameter-list of a function
4818 * this is where original-QC has parameter lists.
4819 * We allow a single parameter list here.
4820 * Much like fteqcc we don't allow `float()() x`
4822 if (parser->tok == '(') {
4823 var = parse_parameter_list(parser, var);
4828 /* store the base if requested */
4830 *storebase = ast_value_copy(var);
4832 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4833 tmp->expression.next = (ast_expression*)*storebase;
4838 /* there may be a name now */
4839 if (parser->tok == TOKEN_IDENT || parser->tok == TOKEN_KEYWORD) {
4840 if (!strcmp(parser_tokval(parser), "break"))
4841 (void)!parsewarning(parser, WARN_BREAKDEF, "break definition ignored (suggest removing it)");
4842 else if (parser->tok == TOKEN_KEYWORD)
4845 name = util_strdup(parser_tokval(parser));
4848 if (!parser_next(parser)) {
4851 parseerror(parser, "error after variable or field declaration");
4857 /* now this may be an array */
4858 if (parser->tok == '[') {
4860 var = parse_arraysize(parser, var);
4862 if (name) mem_d(name);
4867 /* This is the point where we can turn it into a field */
4869 /* turn it into a field if desired */
4870 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4871 tmp->expression.next = (ast_expression*)var;
4875 /* now there may be function parens again */
4876 if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
4877 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4878 if (parser->tok == '(' && wasarray)
4879 parseerror(parser, "arrays as part of a return type is not supported");
4880 while (parser->tok == '(') {
4881 var = parse_parameter_list(parser, var);
4883 if (name) mem_d(name);
4888 /* finally name it */
4890 if (!ast_value_set_name(var, name)) {
4893 parseerror(parser, "internal error: failed to set name");
4896 /* free the name, ast_value_set_name duplicates */
4903 static bool parse_typedef(parser_t *parser)
4905 ast_value *typevar, *oldtype;
4906 ast_expression *old;
4908 typevar = parse_typename(parser, NULL, NULL, NULL);
4913 /* while parsing types, the ast_value's get named '<something>' */
4914 if (!typevar->name || typevar->name[0] == '<') {
4915 parseerror(parser, "missing name in typedef");
4916 ast_delete(typevar);
4920 if ( (old = parser_find_var(parser, typevar->name)) ) {
4921 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4922 " -> `%s` has been declared here: %s:%i",
4923 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4924 ast_delete(typevar);
4928 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4929 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4930 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4931 ast_delete(typevar);
4935 vec_push(parser->_typedefs, typevar);
4936 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4938 if (parser->tok != ';') {
4939 parseerror(parser, "expected semicolon after typedef");
4942 if (!parser_next(parser)) {
4943 parseerror(parser, "parse error after typedef");
4950 static const char *cvq_to_str(int cvq) {
4952 case CV_NONE: return "none";
4953 case CV_VAR: return "`var`";
4954 case CV_CONST: return "`const`";
4955 default: return "<INVALID>";
4959 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4962 if (proto->cvq != var->cvq) {
4963 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4964 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4965 parser->tok == '='))
4967 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
4968 "`%s` declared with different qualifiers: %s\n"
4969 " -> previous declaration here: %s:%i uses %s",
4970 var->name, cvq_to_str(var->cvq),
4971 ast_ctx(proto).file, ast_ctx(proto).line,
4972 cvq_to_str(proto->cvq));
4975 av = (var ->expression.flags & AST_FLAG_NORETURN);
4976 ao = (proto->expression.flags & AST_FLAG_NORETURN);
4978 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
4979 "`%s` declared with different attributes%s\n"
4980 " -> previous declaration here: %s:%i",
4981 var->name, (av ? ": noreturn" : ""),
4982 ast_ctx(proto).file, ast_ctx(proto).line,
4983 (ao ? ": noreturn" : ""));
4988 static bool create_array_accessors(parser_t *parser, ast_value *var)
4991 util_snprintf(name, sizeof(name), "%s##SET", var->name);
4992 if (!parser_create_array_setter(parser, var, name))
4994 util_snprintf(name, sizeof(name), "%s##GET", var->name);
4995 if (!parser_create_array_getter(parser, var, var->expression.next, name))
5000 static bool parse_array(parser_t *parser, ast_value *array)
5003 if (array->initlist.size()) {
5004 parseerror(parser, "array already initialized elsewhere");
5007 if (!parser_next(parser)) {
5008 parseerror(parser, "parse error in array initializer");
5012 while (parser->tok != '}') {
5013 ast_value *v = (ast_value*)parse_expression_leave(parser, true, false, false);
5016 if (!ast_istype(v, ast_value) || !v->hasvalue || v->cvq != CV_CONST) {
5018 parseerror(parser, "initializing element must be a compile time constant");
5021 array->initlist.push_back(v->constval);
5022 if (v->expression.vtype == TYPE_STRING) {
5023 array->initlist[i].vstring = util_strdupe(array->initlist[i].vstring);
5027 if (parser->tok == '}')
5029 if (parser->tok != ',' || !parser_next(parser)) {
5030 parseerror(parser, "expected comma or '}' in element list");
5034 if (!parser_next(parser) || parser->tok != ';') {
5035 parseerror(parser, "expected semicolon after initializer, got %s");
5039 if (!parser_next(parser)) {
5040 parseerror(parser, "parse error after initializer");
5045 if (array->expression.flags & AST_FLAG_ARRAY_INIT) {
5046 if (array->expression.count != (size_t)-1) {
5047 parseerror(parser, "array `%s' has already been initialized with %u elements",
5048 array->name, (unsigned)array->expression.count);
5050 array->expression.count = array->initlist.size();
5051 if (!create_array_accessors(parser, array))
5057 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)
5061 ast_expression *old;
5065 ast_value *basetype = NULL;
5067 bool isparam = false;
5068 bool isvector = false;
5069 bool cleanvar = true;
5070 bool wasarray = false;
5072 ast_member *me[3] = { NULL, NULL, NULL };
5073 ast_member *last_me[3] = { NULL, NULL, NULL };
5075 if (!localblock && is_static)
5076 parseerror(parser, "`static` qualifier is not supported in global scope");
5078 /* get the first complete variable */
5079 var = parse_typename(parser, &basetype, cached_typedef, NULL);
5082 ast_delete(basetype);
5086 /* while parsing types, the ast_value's get named '<something>' */
5087 if (!var->name || var->name[0] == '<') {
5088 parseerror(parser, "declaration does not declare anything");
5090 ast_delete(basetype);
5098 /* Part 0: finish the type */
5099 if (parser->tok == '(') {
5100 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5101 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5102 var = parse_parameter_list(parser, var);
5108 /* we only allow 1-dimensional arrays */
5109 if (parser->tok == '[') {
5111 var = parse_arraysize(parser, var);
5117 if (parser->tok == '(' && wasarray) {
5118 parseerror(parser, "arrays as part of a return type is not supported");
5119 /* we'll still parse the type completely for now */
5121 /* for functions returning functions */
5122 while (parser->tok == '(') {
5123 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
5124 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
5125 var = parse_parameter_list(parser, var);
5132 var->cvq = qualifier;
5133 if (qflags & AST_FLAG_COVERAGE) /* specified in QC, drop our default */
5134 var->expression.flags &= ~(AST_FLAG_COVERAGE_MASK);
5135 var->expression.flags |= qflags;
5138 * store the vstring back to var for alias and
5139 * deprecation messages.
5141 if (var->expression.flags & AST_FLAG_DEPRECATED ||
5142 var->expression.flags & AST_FLAG_ALIAS)
5143 var->desc = vstring;
5145 if (parser_find_global(parser, var->name) && var->expression.flags & AST_FLAG_ALIAS) {
5146 parseerror(parser, "function aliases cannot be forward declared");
5153 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
5154 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
5155 * is then filled with the previous definition and the parameter-names replaced.
5157 if (!strcmp(var->name, "nil")) {
5158 if (OPTS_FLAG(UNTYPED_NIL)) {
5159 if (!localblock || !OPTS_FLAG(PERMISSIVE))
5160 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
5162 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
5165 /* Deal with end_sys_ vars */
5167 if (!strcmp(var->name, "end_sys_globals")) {
5169 parser->crc_globals = parser->globals.size();
5172 else if (!strcmp(var->name, "end_sys_fields")) {
5174 parser->crc_fields = parser->fields.size();
5177 if (was_end && var->expression.vtype == TYPE_FIELD) {
5178 if (parsewarning(parser, WARN_END_SYS_FIELDS,
5179 "global '%s' hint should not be a field",
5180 parser_tokval(parser)))
5187 if (!nofields && var->expression.vtype == TYPE_FIELD)
5189 /* deal with field declarations */
5190 old = parser_find_field(parser, var->name);
5192 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
5193 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
5202 parseerror(parser, "field `%s` already declared here: %s:%i",
5203 var->name, ast_ctx(old).file, ast_ctx(old).line);
5208 if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
5209 (old = parser_find_global(parser, var->name)))
5211 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5212 parseerror(parser, "field `%s` already declared here: %s:%i",
5213 var->name, ast_ctx(old).file, ast_ctx(old).line);
5220 /* deal with other globals */
5221 old = parser_find_global(parser, var->name);
5222 if (old && var->expression.vtype == TYPE_FUNCTION && old->vtype == TYPE_FUNCTION)
5224 /* This is a function which had a prototype */
5225 if (!ast_istype(old, ast_value)) {
5226 parseerror(parser, "internal error: prototype is not an ast_value");
5230 proto = (ast_value*)old;
5231 proto->desc = var->desc;
5232 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
5233 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
5235 ast_ctx(proto).file, ast_ctx(proto).line);
5239 /* we need the new parameter-names */
5240 for (i = 0; i < proto->expression.params.size(); ++i)
5241 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
5242 if (!parser_check_qualifiers(parser, var, proto)) {
5249 proto->expression.flags |= var->expression.flags;
5257 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
5258 "global `%s` already declared here: %s:%i",
5259 var->name, ast_ctx(old).file, ast_ctx(old).line))
5264 if (old->flags & AST_FLAG_FINAL_DECL) {
5265 parseerror(parser, "cannot redeclare variable `%s`, declared final here: %s:%i",
5266 var->name, ast_ctx(old).file, ast_ctx(old).line);
5270 proto = (ast_value*)old;
5271 if (!ast_istype(old, ast_value)) {
5272 parseerror(parser, "internal error: not an ast_value");
5277 if (!parser_check_qualifiers(parser, var, proto)) {
5282 proto->expression.flags |= var->expression.flags;
5283 /* copy the context for finals,
5284 * so the error can show where it was actually made 'final'
5286 if (proto->expression.flags & AST_FLAG_FINAL_DECL)
5287 ast_ctx(old) = ast_ctx(var);
5291 if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
5292 (old = parser_find_field(parser, var->name)))
5294 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
5295 parseerror(parser, "global `%s` already declared here: %s:%i",
5296 var->name, ast_ctx(old).file, ast_ctx(old).line);
5303 else /* it's not a global */
5305 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
5306 if (old && !isparam) {
5307 parseerror(parser, "local `%s` already declared here: %s:%i",
5308 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5312 /* doing this here as the above is just for a single scope */
5313 old = parser_find_local(parser, var->name, 0, &isparam);
5314 if (old && isparam) {
5315 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
5316 "local `%s` is shadowing a parameter", var->name))
5318 parseerror(parser, "local `%s` already declared here: %s:%i",
5319 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
5323 if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
5325 if (ast_istype(old, ast_value))
5326 var = proto = (ast_value*)old;
5335 /* in a noref section we simply bump the usecount */
5336 if (noref || parser->noref)
5340 * Create the global/local, and deal with vector types.
5343 if (var->expression.vtype == TYPE_VECTOR)
5345 else if (var->expression.vtype == TYPE_FIELD &&
5346 var->expression.next->vtype == TYPE_VECTOR)
5350 if (!create_vector_members(var, me)) {
5357 /* deal with global variables, fields, functions */
5358 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
5359 var->isfield = true;
5360 parser->fields.push_back((ast_expression*)var);
5361 util_htset(parser->htfields, var->name, var);
5363 for (i = 0; i < 3; ++i) {
5364 parser->fields.push_back((ast_expression*)me[i]);
5365 util_htset(parser->htfields, me[i]->name, me[i]);
5370 if (!(var->expression.flags & AST_FLAG_ALIAS)) {
5371 parser_addglobal(parser, var->name, (ast_expression*)var);
5373 for (i = 0; i < 3; ++i) {
5374 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
5378 ast_expression *find = parser_find_global(parser, var->desc);
5381 compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
5385 if (!ast_compare_type((ast_expression*)var, find)) {
5389 ast_type_to_string(find, ty1, sizeof(ty1));
5390 ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
5392 compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
5398 util_htset(parser->aliases, var->name, find);
5400 /* generate aliases for vector components */
5404 util_asprintf(&buffer[0], "%s_x", var->desc);
5405 util_asprintf(&buffer[1], "%s_y", var->desc);
5406 util_asprintf(&buffer[2], "%s_z", var->desc);
5408 util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
5409 util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
5410 util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
5420 /* a static adds itself to be generated like any other global
5421 * but is added to the local namespace instead
5423 char *defname = NULL;
5424 size_t prefix_len, ln;
5427 ln = strlen(parser->function->name);
5428 vec_append(defname, ln, parser->function->name);
5430 vec_append(defname, 2, "::");
5431 /* remember the length up to here */
5432 prefix_len = vec_size(defname);
5434 /* Add it to the local scope */
5435 util_htset(vec_last(parser->variables), var->name, (void*)var);
5437 /* now rename the global */
5438 ln = strlen(var->name);
5439 vec_append(defname, ln, var->name);
5440 /* if a variable of that name already existed, add the
5442 * The counter is incremented either way.
5444 sn_size = vec_size(parser->function->static_names);
5445 for (sn = 0; sn != sn_size; ++sn) {
5446 if (strcmp(parser->function->static_names[sn], var->name) == 0)
5449 if (sn != sn_size) {
5451 int len = util_asprintf(&num, "#%u", parser->function->static_count);
5452 vec_append(defname, len, num);
5456 vec_push(parser->function->static_names, util_strdup(var->name));
5457 parser->function->static_count++;
5458 ast_value_set_name(var, defname);
5460 /* push it to the to-be-generated globals */
5461 parser->globals.push_back((ast_expression*)var);
5463 /* same game for the vector members */
5465 for (i = 0; i < 3; ++i) {
5466 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
5468 vec_shrinkto(defname, prefix_len);
5469 ln = strlen(me[i]->name);
5470 vec_append(defname, ln, me[i]->name);
5471 ast_member_set_name(me[i], defname);
5473 parser->globals.push_back((ast_expression*)me[i]);
5478 localblock->locals.push_back(var);
5479 parser_addlocal(parser, var->name, (ast_expression*)var);
5481 for (i = 0; i < 3; ++i) {
5482 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
5483 ast_block_collect(localblock, (ast_expression*)me[i]);
5489 memcpy(last_me, me, sizeof(me));
5490 me[0] = me[1] = me[2] = NULL;
5495 if (var->expression.vtype == TYPE_ARRAY) {
5496 if (var->expression.count != (size_t)-1) {
5497 if (!create_array_accessors(parser, var))
5501 else if (!localblock && !nofields &&
5502 var->expression.vtype == TYPE_FIELD &&
5503 var->expression.next->vtype == TYPE_ARRAY)
5506 ast_expression *telem;
5508 ast_value *array = (ast_value*)var->expression.next;
5510 if (!ast_istype(var->expression.next, ast_value)) {
5511 parseerror(parser, "internal error: field element type must be an ast_value");
5515 util_snprintf(name, sizeof(name), "%s##SETF", var->name);
5516 if (!parser_create_array_field_setter(parser, array, name))
5519 telem = ast_type_copy(ast_ctx(var), array->expression.next);
5520 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
5521 tfield->expression.next = telem;
5522 util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
5523 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
5531 if (parser->tok == ';') {
5532 ast_delete(basetype);
5533 if (!parser_next(parser)) {
5534 parseerror(parser, "error after variable declaration");
5540 if (parser->tok == ',')
5544 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
5547 parseerror(parser, "missing comma or semicolon while parsing variables");
5551 if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5552 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
5553 "initializing expression turns variable `%s` into a constant in this standard",
5560 if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
5561 if (parser->tok != '=') {
5562 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
5566 if (!parser_next(parser)) {
5567 parseerror(parser, "error parsing initializer");
5571 else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
5572 parseerror(parser, "expected '=' before function body in this standard");
5575 if (parser->tok == '#') {
5576 ast_function *func = NULL;
5577 ast_value *number = NULL;
5583 parseerror(parser, "cannot declare builtins within functions");
5586 if (var->expression.vtype != TYPE_FUNCTION) {
5587 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5590 if (!parser_next(parser)) {
5591 parseerror(parser, "expected builtin number");
5595 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
5596 number = (ast_value*)parse_expression_leave(parser, true, false, false);
5598 parseerror(parser, "builtin number expected");
5601 if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
5604 parseerror(parser, "builtin number must be a compile time constant");
5607 if (number->expression.vtype == TYPE_INTEGER)
5608 builtin_num = number->constval.vint;
5609 else if (number->expression.vtype == TYPE_FLOAT)
5610 builtin_num = number->constval.vfloat;
5613 parseerror(parser, "builtin number must be an integer constant");
5618 fractional = modff(builtin_num, &integral);
5619 if (builtin_num < 0 || fractional != 0) {
5620 parseerror(parser, "builtin number must be an integer greater than zero");
5624 /* we only want the integral part anyways */
5625 builtin_num = integral;
5626 } else if (parser->tok == TOKEN_INTCONST) {
5627 builtin_num = parser_token(parser)->constval.i;
5629 parseerror(parser, "builtin number must be a compile time constant");
5633 if (var->hasvalue) {
5634 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5635 "builtin `%s` has already been defined\n"
5636 " -> previous declaration here: %s:%i",
5637 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5641 func = ast_function_new(ast_ctx(var), var->name, var);
5643 parseerror(parser, "failed to allocate function for `%s`", var->name);
5646 parser->functions.push_back(func);
5648 func->builtin = -builtin_num-1;
5651 if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
5652 ? (parser->tok != ',' && parser->tok != ';')
5653 : (!parser_next(parser)))
5655 parseerror(parser, "expected comma or semicolon");
5657 ast_function_delete(func);
5658 var->constval.vfunc = NULL;
5662 else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
5665 /* Note that fteqcc and most others don't even *have*
5666 * local arrays, so this is not a high priority.
5668 parseerror(parser, "TODO: initializers for local arrays");
5672 var->hasvalue = true;
5673 if (!parse_array(parser, var))
5676 else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
5679 parseerror(parser, "cannot declare functions within functions");
5684 ast_ctx(proto) = parser_ctx(parser);
5686 if (!parse_function_body(parser, var))
5688 ast_delete(basetype);
5689 for (auto &it : parser->gotos)
5690 parseerror(parser, "undefined label: `%s`", it->name);
5693 ast_expression *cexp;
5695 bool folded_const = false;
5697 cexp = parse_expression_leave(parser, true, false, false);
5700 cval = ast_istype(cexp, ast_value) ? (ast_value*)cexp : NULL;
5702 /* deal with foldable constants: */
5704 var->cvq == CV_CONST && cval && cval->hasvalue && cval->cvq == CV_CONST && !cval->isfield)
5706 /* remove it from the current locals */
5708 for (i = 0; i < 3; ++i) {
5709 vec_pop(parser->_locals);
5710 localblock->collect.pop_back();
5713 /* do sanity checking, this function really needs refactoring */
5714 if (vec_last(parser->_locals) != (ast_expression*)var)
5715 parseerror(parser, "internal error: unexpected change in local variable handling");
5717 vec_pop(parser->_locals);
5718 if (localblock->locals.back() != var)
5719 parseerror(parser, "internal error: unexpected change in local variable handling (2)");
5721 localblock->locals.pop_back();
5722 /* push it to the to-be-generated globals */
5723 parser->globals.push_back((ast_expression*)var);
5725 for (i = 0; i < 3; ++i)
5726 parser->globals.push_back((ast_expression*)last_me[i]);
5727 folded_const = true;
5730 if (folded_const || !localblock || is_static) {
5731 if (cval != parser->nil &&
5732 (!cval || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5735 parseerror(parser, "initializer is non constant");
5740 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5741 qualifier != CV_VAR)
5743 var->cvq = CV_CONST;
5745 if (cval == parser->nil)
5746 var->expression.flags |= AST_FLAG_INITIALIZED;
5749 var->hasvalue = true;
5750 if (cval->expression.vtype == TYPE_STRING)
5751 var->constval.vstring = parser_strdup(cval->constval.vstring);
5752 else if (cval->expression.vtype == TYPE_FIELD)
5753 var->constval.vfield = cval;
5755 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5764 sy.out.push_back(syexp(ast_ctx(var), (ast_expression*)var));
5765 sy.out.push_back(syexp(ast_ctx(cexp), (ast_expression*)cexp));
5766 sy.ops.push_back(syop(ast_ctx(var), parser->assign_op));
5767 if (!parser_sy_apply_operator(parser, &sy))
5770 if (sy.out.size() != 1 && sy.ops.size() != 0)
5771 parseerror(parser, "internal error: leaked operands");
5772 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5780 /* a constant initialized to an inexact value should be marked inexact:
5781 * const float x = <inexact>; should propagate the inexact flag
5783 if (var->cvq == CV_CONST && var->expression.vtype == TYPE_FLOAT) {
5784 if (cval && cval->hasvalue && cval->cvq == CV_CONST)
5785 var->inexact = cval->inexact;
5790 if (parser->tok == ',') {
5791 if (!parser_next(parser)) {
5792 parseerror(parser, "expected another variable");
5796 if (parser->tok != TOKEN_IDENT) {
5797 parseerror(parser, "expected another variable");
5800 var = ast_value_copy(basetype);
5802 ast_value_set_name(var, parser_tokval(parser));
5803 if (!parser_next(parser)) {
5804 parseerror(parser, "error parsing variable declaration");
5810 if (parser->tok != ';') {
5811 parseerror(parser, "missing semicolon after variables");
5815 if (!parser_next(parser)) {
5816 parseerror(parser, "parse error after variable declaration");
5820 ast_delete(basetype);
5824 if (cleanvar && var)
5826 ast_delete(basetype);
5830 ast_delete(basetype);
5831 if (cleanvar && var)
5833 if (me[0]) ast_member_delete(me[0]);
5834 if (me[1]) ast_member_delete(me[1]);
5835 if (me[2]) ast_member_delete(me[2]);
5839 static bool parser_global_statement(parser_t *parser)
5843 bool is_static = false;
5844 uint32_t qflags = 0;
5845 ast_value *istype = NULL;
5846 char *vstring = NULL;
5848 if (parser->tok == TOKEN_IDENT)
5849 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5851 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.' || parser->tok == TOKEN_DOTS)
5853 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5855 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5857 if (cvq == CV_WRONG)
5859 return parse_variable(parser, NULL, false, cvq, NULL, noref, is_static, qflags, vstring);
5861 else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
5863 return parse_enum(parser);
5865 else if (parser->tok == TOKEN_KEYWORD)
5867 if (!strcmp(parser_tokval(parser), "typedef")) {
5868 if (!parser_next(parser)) {
5869 parseerror(parser, "expected type definition after 'typedef'");
5872 return parse_typedef(parser);
5874 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5877 else if (parser->tok == '#')
5879 return parse_pragma(parser);
5881 else if (parser->tok == '$')
5883 if (!parser_next(parser)) {
5884 parseerror(parser, "parse error");
5890 parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
5896 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5898 return util_crc16(old, str, strlen(str));
5901 static void progdefs_crc_file(const char *str)
5903 /* write to progdefs.h here */
5907 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5909 old = progdefs_crc_sum(old, str);
5910 progdefs_crc_file(str);
5914 static void generate_checksum(parser_t *parser, ir_builder *ir)
5916 uint16_t crc = 0xFFFF;
5920 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5921 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5923 progdefs_crc_file("\tint\tpad;\n");
5924 progdefs_crc_file("\tint\tofs_return[3];\n");
5925 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5926 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5927 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5928 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5929 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5930 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5931 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5932 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5934 for (i = 0; i < parser->crc_globals; ++i) {
5935 if (!ast_istype(parser->globals[i], ast_value))
5937 value = (ast_value*)(parser->globals[i]);
5938 switch (value->expression.vtype) {
5939 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5940 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5941 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5942 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5944 crc = progdefs_crc_both(crc, "\tint\t");
5947 crc = progdefs_crc_both(crc, value->name);
5948 crc = progdefs_crc_both(crc, ";\n");
5950 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5951 for (i = 0; i < parser->crc_fields; ++i) {
5952 if (!ast_istype(parser->fields[i], ast_value))
5954 value = (ast_value*)(parser->fields[i]);
5955 switch (value->expression.next->vtype) {
5956 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5957 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5958 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5959 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5961 crc = progdefs_crc_both(crc, "\tint\t");
5964 crc = progdefs_crc_both(crc, value->name);
5965 crc = progdefs_crc_both(crc, ";\n");
5967 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5968 ir->code->crc = crc;
5971 parser_t *parser_create()
5974 lex_ctx_t empty_ctx;
5977 parser = (parser_t*)mem_a(sizeof(parser_t));
5981 memset(parser, 0, sizeof(*parser));
5984 new (parser) parser_t();
5986 for (i = 0; i < operator_count; ++i) {
5987 if (operators[i].id == opid1('=')) {
5988 parser->assign_op = operators+i;
5992 if (!parser->assign_op) {
5993 con_err("internal error: initializing parser: failed to find assign operator\n");
5998 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
5999 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
6000 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
6001 vec_push(parser->_blocktypedefs, 0);
6003 parser->aliases = util_htnew(PARSER_HT_SIZE);
6005 empty_ctx.file = "<internal>";
6007 empty_ctx.column = 0;
6008 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
6009 parser->nil->cvq = CV_CONST;
6010 if (OPTS_FLAG(UNTYPED_NIL))
6011 util_htset(parser->htglobals, "nil", (void*)parser->nil);
6013 parser->max_param_count = 1;
6015 parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
6016 parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
6017 parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
6019 if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
6020 parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
6021 parser->reserved_version->cvq = CV_CONST;
6022 parser->reserved_version->hasvalue = true;
6023 parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
6024 parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
6026 parser->reserved_version = NULL;
6029 parser->fold = fold_init (parser);
6030 parser->intrin = intrin_init(parser);
6034 static bool parser_compile(parser_t *parser)
6036 /* initial lexer/parser state */
6037 parser->lex->flags.noops = true;
6039 if (parser_next(parser))
6041 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
6043 if (!parser_global_statement(parser)) {
6044 if (parser->tok == TOKEN_EOF)
6045 parseerror(parser, "unexpected end of file");
6046 else if (compile_errors)
6047 parseerror(parser, "there have been errors, bailing out");
6048 lex_close(parser->lex);
6054 parseerror(parser, "parse error");
6055 lex_close(parser->lex);
6060 lex_close(parser->lex);
6063 return !compile_errors;
6066 bool parser_compile_file(parser_t *parser, const char *filename)
6068 parser->lex = lex_open(filename);
6070 con_err("failed to open file \"%s\"\n", filename);
6073 return parser_compile(parser);
6076 bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
6078 parser->lex = lex_open_string(str, len, name);
6080 con_err("failed to create lexer for string \"%s\"\n", name);
6083 return parser_compile(parser);
6086 static void parser_remove_ast(parser_t *parser)
6089 if (parser->ast_cleaned)
6091 parser->ast_cleaned = true;
6092 for (auto &it : parser->accessors) {
6093 ast_delete(it->constval.vfunc);
6094 it->constval.vfunc = nullptr;
6097 for (auto &it : parser->functions) ast_delete(it);
6098 for (auto &it : parser->globals) ast_delete(it);
6099 for (auto &it : parser->fields) ast_delete(it);
6101 for (i = 0; i < vec_size(parser->variables); ++i)
6102 util_htdel(parser->variables[i]);
6103 vec_free(parser->variables);
6104 vec_free(parser->_blocklocals);
6105 vec_free(parser->_locals);
6107 for (i = 0; i < vec_size(parser->_typedefs); ++i)
6108 ast_delete(parser->_typedefs[i]);
6109 vec_free(parser->_typedefs);
6110 for (i = 0; i < vec_size(parser->typedefs); ++i)
6111 util_htdel(parser->typedefs[i]);
6112 vec_free(parser->typedefs);
6113 vec_free(parser->_blocktypedefs);
6115 vec_free(parser->_block_ctx);
6117 ast_value_delete(parser->nil);
6119 ast_value_delete(parser->const_vec[0]);
6120 ast_value_delete(parser->const_vec[1]);
6121 ast_value_delete(parser->const_vec[2]);
6123 if (parser->reserved_version)
6124 ast_value_delete(parser->reserved_version);
6126 util_htdel(parser->aliases);
6127 fold_cleanup(parser->fold);
6128 intrin_cleanup(parser->intrin);
6131 void parser_cleanup(parser_t *parser)
6133 parser_remove_ast(parser);
6137 static bool parser_set_coverage_func(parser_t *parser, ir_builder *ir) {
6138 ast_expression *expr;
6142 if (!OPTS_OPTION_BOOL(OPTION_COVERAGE))
6146 for (auto &it : parser->functions) {
6147 if (!strcmp(it->name, "coverage")) {
6153 if (OPTS_OPTION_BOOL(OPTION_COVERAGE)) {
6154 con_out("coverage support requested but no coverage() builtin declared\n");
6155 ir_builder_delete(ir);
6162 expr = (ast_expression*)cov;
6164 if (expr->vtype != TYPE_FUNCTION || expr->params.size()) {
6166 ast_type_to_string(expr, ty, sizeof(ty));
6167 con_out("invalid type for coverage(): %s\n", ty);
6168 ir_builder_delete(ir);
6172 ir->coverage_func = func->ir_func->value;
6176 bool parser_finish(parser_t *parser, const char *output)
6181 if (compile_errors) {
6182 con_out("*** there were compile errors\n");
6186 ir = ir_builder_new("gmqcc_out");
6188 con_out("failed to allocate builder\n");
6192 for (auto &it : parser->fields) {
6194 if (!ast_istype(it, ast_value))
6196 ast_value *field = (ast_value*)it;
6197 hasvalue = field->hasvalue;
6198 field->hasvalue = false;
6199 if (!ast_global_codegen((ast_value*)field, ir, true)) {
6200 con_out("failed to generate field %s\n", field->name);
6201 ir_builder_delete(ir);
6206 ast_expression *subtype;
6207 field->hasvalue = true;
6208 subtype = field->expression.next;
6209 ifld = ir_builder_create_field(ir, field->name, subtype->vtype);
6210 if (subtype->vtype == TYPE_FIELD)
6211 ifld->fieldtype = subtype->next->vtype;
6212 else if (subtype->vtype == TYPE_FUNCTION)
6213 ifld->outtype = subtype->next->vtype;
6214 (void)!ir_value_set_field(field->ir_v, ifld);
6217 for (auto &it : parser->globals) {
6219 if (!ast_istype(it, ast_value))
6221 asvalue = (ast_value*)it;
6222 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
6223 retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
6224 "unused global: `%s`", asvalue->name);
6226 if (!ast_global_codegen(asvalue, ir, false)) {
6227 con_out("failed to generate global %s\n", asvalue->name);
6228 ir_builder_delete(ir);
6232 /* Build function vararg accessor ast tree now before generating
6233 * immediates, because the accessors may add new immediates
6235 for (auto &f : parser->functions) {
6237 if (parser->max_param_count > f->vtype->expression.params.size()) {
6238 f->varargs->expression.count = parser->max_param_count - f->vtype->expression.params.size();
6239 if (!parser_create_array_setter_impl(parser, f->varargs)) {
6240 con_out("failed to generate vararg setter for %s\n", f->name);
6241 ir_builder_delete(ir);
6244 if (!parser_create_array_getter_impl(parser, f->varargs)) {
6245 con_out("failed to generate vararg getter for %s\n", f->name);
6246 ir_builder_delete(ir);
6250 ast_delete(f->varargs);
6255 /* Now we can generate immediates */
6256 if (!fold_generate(parser->fold, ir))
6259 /* before generating any functions we need to set the coverage_func */
6260 if (!parser_set_coverage_func(parser, ir))
6262 for (auto &it : parser->globals) {
6263 if (!ast_istype(it, ast_value))
6265 ast_value *asvalue = (ast_value*)it;
6266 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
6268 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
6269 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
6270 "uninitialized constant: `%s`",
6272 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
6273 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
6274 "uninitialized global: `%s`",
6277 if (!ast_generate_accessors(asvalue, ir)) {
6278 ir_builder_delete(ir);
6282 for (auto &it : parser->fields) {
6283 ast_value *asvalue = (ast_value*)it->next;
6284 if (!ast_istype((ast_expression*)asvalue, ast_value))
6286 if (asvalue->expression.vtype != TYPE_ARRAY)
6288 if (!ast_generate_accessors(asvalue, ir)) {
6289 ir_builder_delete(ir);
6293 if (parser->reserved_version &&
6294 !ast_global_codegen(parser->reserved_version, ir, false))
6296 con_out("failed to generate reserved::version");
6297 ir_builder_delete(ir);
6300 for (auto &f : parser->functions) {
6301 if (!ast_function_codegen(f, ir)) {
6302 con_out("failed to generate function %s\n", f->name);
6303 ir_builder_delete(ir);
6308 generate_checksum(parser, ir);
6310 if (OPTS_OPTION_BOOL(OPTION_DUMP))
6311 ir_builder_dump(ir, con_out);
6312 for (auto &it : parser->functions) {
6313 if (!ir_function_finalize(it->ir_func)) {
6314 con_out("failed to finalize function %s\n", it->name);
6315 ir_builder_delete(ir);
6319 parser_remove_ast(parser);
6321 if (compile_Werrors) {
6322 con_out("*** there were warnings treated as errors\n");
6323 compile_show_werrors();
6328 if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
6329 ir_builder_dump(ir, con_out);
6331 if (!ir_builder_generate(ir, output)) {
6332 con_out("*** failed to generate output file\n");
6333 ir_builder_delete(ir);
6337 ir_builder_delete(ir);