2 * Copyright (C) 2012, 2013
6 * Permission is hereby granted, free of charge, to any person obtaining a copy of
7 * this software and associated documentation files (the "Software"), to deal in
8 * the Software without restriction, including without limitation the rights to
9 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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13 * The above copyright notice and this permission notice shall be included in all
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16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 /* beginning of locals */
32 #define PARSER_HT_LOCALS 2
34 #define PARSER_HT_SIZE 1024
35 #define TYPEDEF_HT_SIZE 16
37 enum parser_pot { POT_PAREN, POT_TERNARY1, POT_TERNARY2 };
42 ast_expression **globals;
43 ast_expression **fields;
44 ast_function **functions;
45 ast_value **imm_float;
46 ast_value **imm_string;
47 ast_value **imm_vector;
50 /* must be deleted first, they reference immediates and values */
51 ast_value **accessors;
53 ast_value *imm_float_zero;
54 ast_value *imm_float_one;
55 ast_value *imm_vector_zero;
61 ast_function *function;
63 /* All the labels the function defined...
64 * Should they be in ast_function instead?
69 const char **continues;
71 /* A list of hashtables for each scope */
77 /* same as above but for the spelling corrector */
78 correct_trie_t **correct_variables;
79 size_t ***correct_variables_score; /* vector of vector of size_t* */
81 /* not to be used directly, we use the hash table */
82 ast_expression **_locals;
84 ast_value **_typedefs;
85 size_t *_blocktypedefs;
88 /* we store the '=' operator info */
89 const oper_info *assign_op;
91 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
92 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
93 * anything else: type error
97 /* Keep track of our ternary vs parenthesis nesting state.
98 * If we reach a 'comma' operator in a ternary without a paren,
99 * we shall trigger -Wternary-precedence.
101 enum parser_pot *pot;
107 static const ast_expression *intrinsic_debug_typestring = (ast_expression*)0x10;
109 static void parser_enterblock(parser_t *parser);
110 static bool parser_leaveblock(parser_t *parser);
111 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
112 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e);
113 static bool parse_typedef(parser_t *parser);
114 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);
115 static ast_block* parse_block(parser_t *parser);
116 static bool parse_block_into(parser_t *parser, ast_block *block);
117 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
118 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
119 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
120 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
122 static void parseerror(parser_t *parser, const char *fmt, ...)
126 vcompile_error(parser->lex->tok.ctx, fmt, ap);
130 /* returns true if it counts as an error */
131 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
136 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
141 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
146 r = vcompile_warning(ctx, warntype, fmt, ap);
151 /**********************************************************************
152 * some maths used for constant folding
155 vector vec3_add(vector a, vector b)
164 vector vec3_sub(vector a, vector b)
173 qcfloat vec3_mulvv(vector a, vector b)
175 return (a.x * b.x + a.y * b.y + a.z * b.z);
178 vector vec3_mulvf(vector a, float b)
187 /**********************************************************************
191 bool parser_next(parser_t *parser)
193 /* lex_do kills the previous token */
194 parser->tok = lex_do(parser->lex);
195 if (parser->tok == TOKEN_EOF)
197 if (parser->tok >= TOKEN_ERROR) {
198 parseerror(parser, "lex error");
204 #define parser_tokval(p) ((p)->lex->tok.value)
205 #define parser_token(p) (&((p)->lex->tok))
206 #define parser_ctx(p) ((p)->lex->tok.ctx)
208 static ast_value* parser_const_float(parser_t *parser, double d)
212 for (i = 0; i < vec_size(parser->imm_float); ++i) {
213 const double compare = parser->imm_float[i]->constval.vfloat;
214 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
215 return parser->imm_float[i];
217 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
219 out->hasvalue = true;
220 out->constval.vfloat = d;
221 vec_push(parser->imm_float, out);
225 static ast_value* parser_const_float_0(parser_t *parser)
227 if (!parser->imm_float_zero)
228 parser->imm_float_zero = parser_const_float(parser, 0);
229 return parser->imm_float_zero;
232 static ast_value* parser_const_float_1(parser_t *parser)
234 if (!parser->imm_float_one)
235 parser->imm_float_one = parser_const_float(parser, 1);
236 return parser->imm_float_one;
239 static char *parser_strdup(const char *str)
242 /* actually dup empty strings */
243 char *out = (char*)mem_a(1);
247 return util_strdup(str);
250 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
254 for (i = 0; i < vec_size(parser->imm_string); ++i) {
255 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
256 return parser->imm_string[i];
260 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
261 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
263 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
265 out->hasvalue = true;
266 out->constval.vstring = parser_strdup(str);
267 vec_push(parser->imm_string, out);
271 static ast_value* parser_const_vector(parser_t *parser, vector v)
275 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
276 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
277 return parser->imm_vector[i];
279 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
281 out->hasvalue = true;
282 out->constval.vvec = v;
283 vec_push(parser->imm_vector, out);
287 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
293 return parser_const_vector(parser, v);
296 static ast_value* parser_const_vector_0(parser_t *parser)
298 if (!parser->imm_vector_zero)
299 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
300 return parser->imm_vector_zero;
303 static ast_expression* parser_find_field(parser_t *parser, const char *name)
305 return ( ast_expression*)util_htget(parser->htfields, name);
308 static ast_expression* parser_find_label(parser_t *parser, const char *name)
311 for(i = 0; i < vec_size(parser->labels); i++)
312 if (!strcmp(parser->labels[i]->name, name))
313 return (ast_expression*)parser->labels[i];
317 static ast_expression* parser_find_global(parser_t *parser, const char *name)
319 return (ast_expression*)util_htget(parser->htglobals, name);
322 static ast_expression* parser_find_param(parser_t *parser, const char *name)
326 if (!parser->function)
328 fun = parser->function->vtype;
329 for (i = 0; i < vec_size(fun->expression.params); ++i) {
330 if (!strcmp(fun->expression.params[i]->name, name))
331 return (ast_expression*)(fun->expression.params[i]);
336 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
341 hash = util_hthash(parser->htglobals, name);
344 for (i = vec_size(parser->variables); i > upto;) {
346 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
350 return parser_find_param(parser, name);
353 static ast_expression* parser_find_var(parser_t *parser, const char *name)
357 v = parser_find_local(parser, name, 0, &dummy);
358 if (!v) v = parser_find_global(parser, name);
362 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
366 hash = util_hthash(parser->typedefs[0], name);
368 for (i = vec_size(parser->typedefs); i > upto;) {
370 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
378 size_t etype; /* 0 = expression, others are operators */
382 ast_block *block; /* for commas and function calls */
391 #define SY_PAREN_EXPR '('
392 #define SY_PAREN_FUNC 'f'
393 #define SY_PAREN_INDEX '['
394 #define SY_PAREN_TERNARY '?'
396 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
407 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
411 e.out = (ast_expression*)v;
418 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
420 e.etype = 1 + (op - operators);
429 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
441 # define DEBUGSHUNTDO(x) x
443 # define DEBUGSHUNTDO(x)
446 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
447 * so we need to rotate it to become ent.(foo[n]).
449 static bool rotate_entfield_array_index_nodes(ast_expression **out)
451 ast_array_index *index;
452 ast_entfield *entfield;
456 ast_expression *entity;
458 lex_ctx ctx = ast_ctx(*out);
460 if (!ast_istype(*out, ast_array_index))
462 index = (ast_array_index*)*out;
464 if (!ast_istype(index->array, ast_entfield))
466 entfield = (ast_entfield*)index->array;
468 if (!ast_istype(entfield->field, ast_value))
470 field = (ast_value*)entfield->field;
473 entity = entfield->entity;
477 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
478 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
479 *out = (ast_expression*)entfield;
484 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
486 switch (v->expression.vtype) {
488 return !!v->constval.vfloat;
490 return !!v->constval.vint;
492 if (OPTS_FLAG(CORRECT_LOGIC))
493 return v->constval.vvec.x &&
494 v->constval.vvec.y &&
497 return !!(v->constval.vvec.x);
499 if (!v->constval.vstring)
501 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
503 return !!v->constval.vstring[0];
505 compile_error(ctx, "internal error: immediate_is_true on invalid type");
506 return !!v->constval.vfunc;
510 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
514 ast_expression *out = NULL;
515 ast_expression *exprs[3];
516 ast_block *blocks[3];
517 ast_value *asvalue[3];
518 ast_binstore *asbinstore;
519 size_t i, assignop, addop, subop;
520 qcint generated_op = 0;
525 if (!vec_size(sy->ops)) {
526 parseerror(parser, "internal error: missing operator");
530 if (vec_last(sy->ops).paren) {
531 parseerror(parser, "unmatched parenthesis");
535 op = &operators[vec_last(sy->ops).etype - 1];
536 ctx = vec_last(sy->ops).ctx;
538 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
540 if (vec_size(sy->out) < op->operands) {
541 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
542 op->op, (int)op->id);
546 vec_shrinkby(sy->ops, 1);
548 /* op(:?) has no input and no output */
552 vec_shrinkby(sy->out, op->operands);
553 for (i = 0; i < op->operands; ++i) {
554 exprs[i] = sy->out[vec_size(sy->out)+i].out;
555 blocks[i] = sy->out[vec_size(sy->out)+i].block;
556 asvalue[i] = (ast_value*)exprs[i];
558 if (exprs[i]->expression.vtype == TYPE_NOEXPR &&
559 !(i != 0 && op->id == opid2('?',':')))
561 if (ast_istype(exprs[i], ast_label))
562 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
564 compile_error(ast_ctx(exprs[i]), "not an expression");
565 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
569 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
570 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
574 #define NotSameType(T) \
575 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
576 exprs[0]->expression.vtype != T)
577 #define CanConstFold1(A) \
578 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
579 (A)->expression.vtype != TYPE_FUNCTION)
580 #define CanConstFold(A, B) \
581 (CanConstFold1(A) && CanConstFold1(B))
582 #define ConstV(i) (asvalue[(i)]->constval.vvec)
583 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
584 #define ConstS(i) (asvalue[(i)]->constval.vstring)
588 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
592 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
593 if (exprs[1]->expression.vtype != TYPE_FIELD) {
594 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
597 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
599 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
600 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
604 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
610 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
611 !(exprs[0]->expression.vtype == TYPE_FIELD &&
612 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
614 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
615 parseerror(parser, "cannot index value of type %s", ty1);
618 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
619 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
620 parseerror(parser, "index must be of type float, not %s", ty1);
623 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
624 if (rotate_entfield_array_index_nodes(&out))
627 /* This is not broken in fteqcc anymore */
628 if (opts.standard != COMPILER_GMQCC) {
629 /* this error doesn't need to make us bail out */
630 (void)!parsewarning(parser, WARN_EXTENSIONS,
631 "accessing array-field members of an entity without parenthesis\n"
632 " -> this is an extension from -std=gmqcc");
640 if (!ast_block_add_expr(blocks[0], exprs[1]))
643 blocks[0] = ast_block_new(ctx);
644 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
645 !ast_block_add_expr(blocks[0], exprs[1]))
650 if (!ast_block_set_type(blocks[0], exprs[1]))
653 vec_push(sy->out, syblock(ctx, blocks[0]));
660 switch (exprs[0]->expression.vtype) {
662 if (CanConstFold1(exprs[0]))
663 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
665 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
666 (ast_expression*)parser_const_float_0(parser),
670 if (CanConstFold1(exprs[0]))
671 out = (ast_expression*)parser_const_vector_f(parser,
672 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
674 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
675 (ast_expression*)parser_const_vector_0(parser),
679 parseerror(parser, "invalid types used in expression: cannot negate type %s",
680 type_name[exprs[0]->expression.vtype]);
686 switch (exprs[0]->expression.vtype) {
688 if (CanConstFold1(exprs[0]))
689 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
691 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
694 if (CanConstFold1(exprs[0]))
695 out = (ast_expression*)parser_const_float(parser,
696 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
698 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
701 if (CanConstFold1(exprs[0])) {
702 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
703 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
705 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
707 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
708 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
710 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
713 /* we don't constant-fold NOT for these types */
715 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
718 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
721 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
722 type_name[exprs[0]->expression.vtype]);
728 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
729 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
731 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
732 type_name[exprs[0]->expression.vtype],
733 type_name[exprs[1]->expression.vtype]);
736 switch (exprs[0]->expression.vtype) {
738 if (CanConstFold(exprs[0], exprs[1]))
740 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
743 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
746 if (CanConstFold(exprs[0], exprs[1]))
747 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
749 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
752 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
753 type_name[exprs[0]->expression.vtype],
754 type_name[exprs[1]->expression.vtype]);
759 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
760 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
762 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
763 type_name[exprs[1]->expression.vtype],
764 type_name[exprs[0]->expression.vtype]);
767 switch (exprs[0]->expression.vtype) {
769 if (CanConstFold(exprs[0], exprs[1]))
770 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
772 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
775 if (CanConstFold(exprs[0], exprs[1]))
776 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
778 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
781 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
782 type_name[exprs[1]->expression.vtype],
783 type_name[exprs[0]->expression.vtype]);
788 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
789 !(exprs[0]->expression.vtype == TYPE_VECTOR &&
790 exprs[1]->expression.vtype == TYPE_FLOAT) &&
791 !(exprs[1]->expression.vtype == TYPE_VECTOR &&
792 exprs[0]->expression.vtype == TYPE_FLOAT)
795 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
796 type_name[exprs[1]->expression.vtype],
797 type_name[exprs[0]->expression.vtype]);
800 switch (exprs[0]->expression.vtype) {
802 if (exprs[1]->expression.vtype == TYPE_VECTOR)
804 if (CanConstFold(exprs[0], exprs[1]))
805 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
807 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
811 if (CanConstFold(exprs[0], exprs[1]))
812 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
814 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
818 if (exprs[1]->expression.vtype == TYPE_FLOAT)
820 if (CanConstFold(exprs[0], exprs[1]))
821 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
823 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
827 if (CanConstFold(exprs[0], exprs[1]))
828 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
829 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[0])) {
830 vector vec = ConstV(0);
831 if (!vec.y && !vec.z) { /* 'n 0 0' * v */
832 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
833 out = (ast_expression*)ast_member_new(ctx, exprs[1], 0, NULL);
834 out->expression.node.keep = false;
835 ((ast_member*)out)->rvalue = true;
837 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.x), out);
839 else if (!vec.x && !vec.z) { /* '0 n 0' * v */
840 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
841 out = (ast_expression*)ast_member_new(ctx, exprs[1], 1, NULL);
842 out->expression.node.keep = false;
843 ((ast_member*)out)->rvalue = true;
845 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.y), out);
847 else if (!vec.x && !vec.y) { /* '0 n 0' * v */
848 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
849 out = (ast_expression*)ast_member_new(ctx, exprs[1], 2, NULL);
850 out->expression.node.keep = false;
851 ((ast_member*)out)->rvalue = true;
853 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.z), out);
856 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
858 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[1])) {
859 vector vec = ConstV(1);
860 if (!vec.y && !vec.z) { /* v * 'n 0 0' */
861 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
862 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
863 out->expression.node.keep = false;
864 ((ast_member*)out)->rvalue = true;
866 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.x));
868 else if (!vec.x && !vec.z) { /* v * '0 n 0' */
869 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
870 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
871 out->expression.node.keep = false;
872 ((ast_member*)out)->rvalue = true;
874 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.y));
876 else if (!vec.x && !vec.y) { /* v * '0 n 0' */
877 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
878 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
879 out->expression.node.keep = false;
880 ((ast_member*)out)->rvalue = true;
882 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.z));
885 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
888 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
892 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
893 type_name[exprs[1]->expression.vtype],
894 type_name[exprs[0]->expression.vtype]);
899 if (NotSameType(TYPE_FLOAT)) {
900 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
901 type_name[exprs[0]->expression.vtype],
902 type_name[exprs[1]->expression.vtype]);
905 if (CanConstFold(exprs[0], exprs[1]))
906 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
908 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
912 parseerror(parser, "qc does not have a modulo operator");
916 if (NotSameType(TYPE_FLOAT)) {
917 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
918 type_name[exprs[0]->expression.vtype],
919 type_name[exprs[1]->expression.vtype]);
922 if (CanConstFold(exprs[0], exprs[1]))
923 out = (ast_expression*)parser_const_float(parser,
924 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
925 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
927 out = (ast_expression*)ast_binary_new(ctx,
928 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
932 parseerror(parser, "TODO: bitxor");
937 case opid3('<','<','='):
938 case opid3('>','>','='):
939 parseerror(parser, "TODO: shifts");
943 generated_op += 1; /* INSTR_OR */
945 generated_op += INSTR_AND;
947 if (NotSameType(TYPE_FLOAT)) {
948 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
949 type_name[exprs[0]->expression.vtype],
950 type_name[exprs[1]->expression.vtype]);
951 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
952 parseerror(parser, "TODO: optional early out");
956 if (CanConstFold(exprs[0], exprs[1]))
958 if (OPTS_FLAG(PERL_LOGIC)) {
959 if (immediate_is_true(ctx, asvalue[0]))
963 out = (ast_expression*)parser_const_float(parser,
964 ( (generated_op == INSTR_OR)
965 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
966 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
971 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
972 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
973 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
974 parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
977 for (i = 0; i < 2; ++i) {
978 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->expression.vtype == TYPE_VECTOR) {
979 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
981 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
983 exprs[i] = out; out = NULL;
984 if (OPTS_FLAG(PERL_LOGIC)) {
985 /* here we want to keep the right expressions' type */
989 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->expression.vtype == TYPE_STRING) {
990 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
992 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
994 exprs[i] = out; out = NULL;
995 if (OPTS_FLAG(PERL_LOGIC)) {
996 /* here we want to keep the right expressions' type */
1001 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1005 case opid2('?',':'):
1006 if (vec_last(parser->pot) != POT_TERNARY2) {
1007 parseerror(parser, "mismatched parenthesis/ternary");
1010 vec_pop(parser->pot);
1011 if (!ast_compare_type(exprs[1], exprs[2])) {
1012 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
1013 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
1014 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
1017 if (CanConstFold1(exprs[0]))
1018 out = (immediate_is_true(ctx, asvalue[0]) ? exprs[1] : exprs[2]);
1020 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
1024 generated_op += 1; /* INSTR_GT */
1026 generated_op += 1; /* INSTR_LT */
1027 case opid2('>', '='):
1028 generated_op += 1; /* INSTR_GE */
1029 case opid2('<', '='):
1030 generated_op += INSTR_LE;
1031 if (NotSameType(TYPE_FLOAT)) {
1032 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1033 type_name[exprs[0]->expression.vtype],
1034 type_name[exprs[1]->expression.vtype]);
1037 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1039 case opid2('!', '='):
1040 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1041 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1042 type_name[exprs[0]->expression.vtype],
1043 type_name[exprs[1]->expression.vtype]);
1046 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1048 case opid2('=', '='):
1049 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1050 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1051 type_name[exprs[0]->expression.vtype],
1052 type_name[exprs[1]->expression.vtype]);
1055 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1059 if (ast_istype(exprs[0], ast_entfield)) {
1060 ast_expression *field = ((ast_entfield*)exprs[0])->field;
1061 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1062 exprs[0]->expression.vtype == TYPE_FIELD &&
1063 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1065 assignop = type_storep_instr[TYPE_VECTOR];
1068 assignop = type_storep_instr[exprs[0]->expression.vtype];
1069 if (assignop == AINSTR_END || !ast_compare_type(field->expression.next, exprs[1]))
1071 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
1072 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1073 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1074 field->expression.next->expression.vtype == TYPE_FUNCTION &&
1075 exprs[1]->expression.vtype == TYPE_FUNCTION)
1077 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1078 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1081 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1086 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1087 exprs[0]->expression.vtype == TYPE_FIELD &&
1088 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1090 assignop = type_store_instr[TYPE_VECTOR];
1093 assignop = type_store_instr[exprs[0]->expression.vtype];
1096 if (assignop == AINSTR_END) {
1097 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1098 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1099 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1101 else if (!ast_compare_type(exprs[0], exprs[1]))
1103 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1104 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1105 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1106 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1107 exprs[1]->expression.vtype == TYPE_FUNCTION)
1109 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1110 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1113 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1116 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1117 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1119 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1121 case opid3('+','+','P'):
1122 case opid3('-','-','P'):
1124 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1125 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1126 parseerror(parser, "invalid type for prefix increment: %s", ty1);
1129 if (op->id == opid3('+','+','P'))
1130 addop = INSTR_ADD_F;
1132 addop = INSTR_SUB_F;
1133 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1134 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1136 if (ast_istype(exprs[0], ast_entfield)) {
1137 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1139 (ast_expression*)parser_const_float_1(parser));
1141 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1143 (ast_expression*)parser_const_float_1(parser));
1146 case opid3('S','+','+'):
1147 case opid3('S','-','-'):
1149 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1150 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1151 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1154 if (op->id == opid3('S','+','+')) {
1155 addop = INSTR_ADD_F;
1156 subop = INSTR_SUB_F;
1158 addop = INSTR_SUB_F;
1159 subop = INSTR_ADD_F;
1161 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1162 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1164 if (ast_istype(exprs[0], ast_entfield)) {
1165 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1167 (ast_expression*)parser_const_float_1(parser));
1169 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1171 (ast_expression*)parser_const_float_1(parser));
1175 out = (ast_expression*)ast_binary_new(ctx, subop,
1177 (ast_expression*)parser_const_float_1(parser));
1179 case opid2('+','='):
1180 case opid2('-','='):
1181 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1182 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1184 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1185 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1186 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1190 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1191 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1193 if (ast_istype(exprs[0], ast_entfield))
1194 assignop = type_storep_instr[exprs[0]->expression.vtype];
1196 assignop = type_store_instr[exprs[0]->expression.vtype];
1197 switch (exprs[0]->expression.vtype) {
1199 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1200 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1201 exprs[0], exprs[1]);
1204 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1205 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1206 exprs[0], exprs[1]);
1209 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1210 type_name[exprs[0]->expression.vtype],
1211 type_name[exprs[1]->expression.vtype]);
1215 case opid2('*','='):
1216 case opid2('/','='):
1217 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1218 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1219 exprs[0]->expression.vtype == TYPE_VECTOR))
1221 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1222 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1223 parseerror(parser, "invalid types used in expression: %s and %s",
1227 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1228 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1230 if (ast_istype(exprs[0], ast_entfield))
1231 assignop = type_storep_instr[exprs[0]->expression.vtype];
1233 assignop = type_store_instr[exprs[0]->expression.vtype];
1234 switch (exprs[0]->expression.vtype) {
1236 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1237 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1238 exprs[0], exprs[1]);
1241 if (op->id == opid2('*','=')) {
1242 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1243 exprs[0], exprs[1]);
1245 /* there's no DIV_VF */
1246 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1247 (ast_expression*)parser_const_float_1(parser),
1251 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1256 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1257 type_name[exprs[0]->expression.vtype],
1258 type_name[exprs[1]->expression.vtype]);
1262 case opid2('&','='):
1263 case opid2('|','='):
1264 if (NotSameType(TYPE_FLOAT)) {
1265 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1266 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1267 parseerror(parser, "invalid types used in expression: %s and %s",
1271 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1272 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1274 if (ast_istype(exprs[0], ast_entfield))
1275 assignop = type_storep_instr[exprs[0]->expression.vtype];
1277 assignop = type_store_instr[exprs[0]->expression.vtype];
1278 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1279 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1280 exprs[0], exprs[1]);
1282 case opid3('&','~','='):
1283 /* This is like: a &= ~(b);
1284 * But QC has no bitwise-not, so we implement it as
1287 if (NotSameType(TYPE_FLOAT)) {
1288 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1289 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1290 parseerror(parser, "invalid types used in expression: %s and %s",
1294 if (ast_istype(exprs[0], ast_entfield))
1295 assignop = type_storep_instr[exprs[0]->expression.vtype];
1297 assignop = type_store_instr[exprs[0]->expression.vtype];
1298 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1301 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1302 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1304 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1305 asbinstore->keep_dest = true;
1306 out = (ast_expression*)asbinstore;
1312 parseerror(parser, "failed to apply operand %s", op->op);
1316 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1317 vec_push(sy->out, syexp(ctx, out));
1321 static bool parser_close_call(parser_t *parser, shunt *sy)
1323 /* was a function call */
1324 ast_expression *fun;
1330 vec_shrinkby(sy->ops, 1);
1331 fid = sy->ops[vec_size(sy->ops)].off;
1333 /* out[fid] is the function
1334 * everything above is parameters...
1335 * 0 params = nothing
1336 * 1 params = ast_expression
1340 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1341 parseerror(parser, "internal error: function call needs function and parameter list...");
1345 fun = sy->out[fid].out;
1347 if (fun == intrinsic_debug_typestring) {
1349 if (fid+2 != vec_size(sy->out) ||
1350 vec_last(sy->out).block)
1352 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1355 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1356 ast_unref(vec_last(sy->out).out);
1357 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1358 (ast_expression*)parser_const_string(parser, ty, false));
1359 vec_shrinkby(sy->out, 1);
1363 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1365 parseerror(parser, "internal error: failed to create ast_call node");
1369 if (fid+1 == vec_size(sy->out)) {
1372 } else if (fid+2 == vec_size(sy->out)) {
1374 vec_shrinkby(sy->out, 1);
1375 params = sy->out[vec_size(sy->out)].block;
1379 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1381 paramcount = vec_size(params->exprs);
1382 call->params = params->exprs;
1383 params->exprs = NULL;
1386 (void)!ast_call_check_types(call);
1388 parseerror(parser, "invalid function call");
1392 /* overwrite fid, the function, with a call */
1393 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1395 if (fun->expression.vtype != TYPE_FUNCTION) {
1396 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1400 if (!fun->expression.next) {
1401 parseerror(parser, "could not determine function return type");
1404 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1406 if (fun->expression.flags & AST_FLAG_DEPRECATED) {
1408 return !parsewarning(parser, WARN_DEPRECATED,
1409 "call to function (which is marked deprecated)\n",
1410 "-> it has been declared here: %s:%i",
1411 ast_ctx(fun).file, ast_ctx(fun).line);
1414 return !parsewarning(parser, WARN_DEPRECATED,
1415 "call to `%s` (which is marked deprecated)\n"
1416 "-> `%s` declared here: %s:%i",
1417 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1419 return !parsewarning(parser, WARN_DEPRECATED,
1420 "call to `%s` (deprecated: %s)\n"
1421 "-> `%s` declared here: %s:%i",
1422 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1426 if (vec_size(fun->expression.params) != paramcount &&
1427 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1428 vec_size(fun->expression.params) < paramcount))
1430 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1432 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1433 "too %s parameters for call to %s: expected %i, got %i\n"
1434 " -> `%s` has been declared here: %s:%i",
1435 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1436 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1438 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1439 "too %s parameters for function call: expected %i, got %i\n"
1440 " -> it has been declared here: %s:%i",
1441 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1442 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1449 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1451 if (!vec_size(sy->ops)) {
1452 parseerror(parser, "unmatched closing paren");
1455 /* this would for bit a + (x) because there are no operators inside (x)
1456 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1457 parseerror(parser, "empty parenthesis expression");
1461 while (vec_size(sy->ops)) {
1462 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1463 if (!parser_close_call(parser, sy))
1467 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1468 vec_shrinkby(sy->ops, 1);
1469 return !functions_only;
1471 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1474 /* pop off the parenthesis */
1475 vec_shrinkby(sy->ops, 1);
1476 /* then apply the index operator */
1477 if (!parser_sy_apply_operator(parser, sy))
1481 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1484 if (vec_last(parser->pot) != POT_TERNARY1) {
1485 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1488 vec_last(parser->pot) = POT_TERNARY2;
1489 /* pop off the parenthesis */
1490 vec_shrinkby(sy->ops, 1);
1493 if (!parser_sy_apply_operator(parser, sy))
1499 static void parser_reclassify_token(parser_t *parser)
1502 for (i = 0; i < operator_count; ++i) {
1503 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1504 parser->tok = TOKEN_OPERATOR;
1510 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1512 ast_expression *expr = NULL;
1514 bool wantop = false;
1515 bool gotmemberof = false;
1516 /* only warn once about an assignment in a truth value because the current code
1517 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1519 bool warn_truthvalue = true;
1521 /* count the parens because an if starts with one, so the
1522 * end of a condition is an unmatched closing paren
1530 parser->lex->flags.noops = false;
1532 parser_reclassify_token(parser);
1537 gotmemberof = false;
1539 parser->memberof = 0;
1541 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1542 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1544 /* a translatable string */
1548 parseerror(parser, "expected operator or end of statement, got constant");
1552 parser->lex->flags.noops = true;
1553 if (!parser_next(parser) || parser->tok != '(') {
1554 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1557 parser->lex->flags.noops = false;
1558 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1559 parseerror(parser, "expected a constant string in translatable-string extension");
1562 val = parser_const_string(parser, parser_tokval(parser), true);
1566 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1567 DEBUGSHUNTDO(con_out("push string\n"));
1569 if (!parser_next(parser) || parser->tok != ')') {
1570 parseerror(parser, "expected closing paren after translatable string");
1574 else if (parser->tok == TOKEN_IDENT)
1576 ast_expression *var;
1578 parseerror(parser, "expected operator or end of statement");
1583 if (opts.standard == COMPILER_GMQCC)
1585 if (parser->memberof == TYPE_ENTITY) {
1586 /* still get vars first since there could be a fieldpointer */
1587 var = parser_find_var(parser, parser_tokval(parser));
1589 var = parser_find_field(parser, parser_tokval(parser));
1591 else if (parser->memberof == TYPE_VECTOR)
1593 parseerror(parser, "TODO: implement effective vector member access");
1596 else if (parser->memberof) {
1597 parseerror(parser, "namespace for member not found");
1601 var = parser_find_var(parser, parser_tokval(parser));
1603 var = parser_find_var(parser, parser_tokval(parser));
1605 var = parser_find_field(parser, parser_tokval(parser));
1607 if (!var && with_labels) {
1608 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1610 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1611 var = (ast_expression*)lbl;
1612 vec_push(parser->labels, lbl);
1617 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1618 var = (ast_expression*)intrinsic_debug_typestring;
1623 char *correct = NULL;
1626 * sometimes people use preprocessing predefs without enabling them
1627 * i've done this thousands of times already myself. Lets check for
1628 * it in the predef table. And diagnose it better :)
1630 if (!OPTS_FLAG(FTEPP_PREDEFS)) {
1631 for (i = 0; i < sizeof(ftepp_predefs)/sizeof(*ftepp_predefs); i++) {
1632 if (!strcmp(ftepp_predefs[i].name, parser_tokval(parser))) {
1633 parseerror(parser, "unexpected ident: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
1640 * TODO: determine the best score for the identifier: be it
1641 * a variable, a field.
1643 * We should also consider adding correction tables for
1644 * other things as well.
1646 if (OPTS_FLAG(ENHANCED_DIAGNOSTICS)) {
1647 for (i = 0; i < vec_size(parser->correct_variables); i++) {
1648 correct = correct_str(parser->correct_variables[i], parser_tokval(parser));
1649 if (strcmp(correct, parser_tokval(parser))) {
1651 } else if (correct) {
1658 parseerror(parser, "unexpected ident: %s (did you mean %s?)", parser_tokval(parser), correct);
1663 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1669 if (ast_istype(var, ast_value)) {
1670 ((ast_value*)var)->uses++;
1672 else if (ast_istype(var, ast_member)) {
1673 ast_member *mem = (ast_member*)var;
1674 if (ast_istype(mem->owner, ast_value))
1675 ((ast_value*)(mem->owner))->uses++;
1678 vec_push(sy.out, syexp(parser_ctx(parser), var));
1679 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1681 else if (parser->tok == TOKEN_FLOATCONST) {
1684 parseerror(parser, "expected operator or end of statement, got constant");
1688 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1691 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1692 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1694 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1697 parseerror(parser, "expected operator or end of statement, got constant");
1701 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1704 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1705 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1707 else if (parser->tok == TOKEN_STRINGCONST) {
1710 parseerror(parser, "expected operator or end of statement, got constant");
1714 val = parser_const_string(parser, parser_tokval(parser), false);
1717 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1718 DEBUGSHUNTDO(con_out("push string\n"));
1720 else if (parser->tok == TOKEN_VECTORCONST) {
1723 parseerror(parser, "expected operator or end of statement, got constant");
1727 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1730 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1731 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1732 parser_token(parser)->constval.v.x,
1733 parser_token(parser)->constval.v.y,
1734 parser_token(parser)->constval.v.z));
1736 else if (parser->tok == '(') {
1737 parseerror(parser, "internal error: '(' should be classified as operator");
1740 else if (parser->tok == '[') {
1741 parseerror(parser, "internal error: '[' should be classified as operator");
1744 else if (parser->tok == ')') {
1746 DEBUGSHUNTDO(con_out("do[op] )\n"));
1750 /* we do expect an operator next */
1751 /* closing an opening paren */
1752 if (!parser_close_paren(parser, &sy, false))
1754 if (vec_last(parser->pot) != POT_PAREN) {
1755 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1758 vec_pop(parser->pot);
1760 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1764 /* allowed for function calls */
1765 if (!parser_close_paren(parser, &sy, true))
1767 if (vec_last(parser->pot) != POT_PAREN) {
1768 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1771 vec_pop(parser->pot);
1775 else if (parser->tok == ']') {
1777 parseerror(parser, "operand expected");
1781 if (!parser_close_paren(parser, &sy, false))
1783 if (vec_last(parser->pot) != POT_PAREN) {
1784 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1787 vec_pop(parser->pot);
1790 else if (parser->tok == TOKEN_TYPENAME) {
1791 parseerror(parser, "unexpected typename");
1794 else if (parser->tok != TOKEN_OPERATOR) {
1796 parseerror(parser, "expected operator or end of statement");
1803 /* classify the operator */
1804 const oper_info *op;
1805 const oper_info *olast = NULL;
1807 for (o = 0; o < operator_count; ++o) {
1808 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1809 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1810 !strcmp(parser_tokval(parser), operators[o].op))
1815 if (o == operator_count) {
1816 /* no operator found... must be the end of the statement */
1819 /* found an operator */
1822 /* when declaring variables, a comma starts a new variable */
1823 if (op->id == opid1(',') && !parens && stopatcomma) {
1824 /* fixup the token */
1829 /* a colon without a pervious question mark cannot be a ternary */
1830 if (!ternaries && op->id == opid2(':','?')) {
1835 if (op->id == opid1(',')) {
1836 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1837 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1841 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1842 olast = &operators[vec_last(sy.ops).etype-1];
1844 #define IsAssignOp(x) (\
1845 (x) == opid1('=') || \
1846 (x) == opid2('+','=') || \
1847 (x) == opid2('-','=') || \
1848 (x) == opid2('*','=') || \
1849 (x) == opid2('/','=') || \
1850 (x) == opid2('%','=') || \
1851 (x) == opid2('&','=') || \
1852 (x) == opid2('|','=') || \
1853 (x) == opid3('&','~','=') \
1855 if (warn_truthvalue) {
1856 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1857 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1858 (truthvalue && !vec_size(parser->pot) && IsAssignOp(op->id))
1861 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1862 warn_truthvalue = false;
1867 (op->prec < olast->prec) ||
1868 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1870 if (!parser_sy_apply_operator(parser, &sy))
1872 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1873 olast = &operators[vec_last(sy.ops).etype-1];
1878 if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) {
1879 /* for gmqcc standard: open up the namespace of the previous type */
1880 ast_expression *prevex = vec_last(sy.out).out;
1882 parseerror(parser, "unexpected member operator");
1885 if (prevex->expression.vtype == TYPE_ENTITY)
1886 parser->memberof = TYPE_ENTITY;
1887 else if (prevex->expression.vtype == TYPE_VECTOR)
1888 parser->memberof = TYPE_VECTOR;
1890 parseerror(parser, "type error: type has no members");
1896 if (op->id == opid1('(')) {
1898 size_t sycount = vec_size(sy.out);
1899 DEBUGSHUNTDO(con_out("push [op] (\n"));
1900 ++parens; vec_push(parser->pot, POT_PAREN);
1901 /* we expected an operator, this is the function-call operator */
1902 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1904 ++parens; vec_push(parser->pot, POT_PAREN);
1905 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1906 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1909 } else if (op->id == opid1('[')) {
1911 parseerror(parser, "unexpected array subscript");
1914 ++parens; vec_push(parser->pot, POT_PAREN);
1915 /* push both the operator and the paren, this makes life easier */
1916 vec_push(sy.ops, syop(parser_ctx(parser), op));
1917 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1919 } else if (op->id == opid2('?',':')) {
1920 vec_push(sy.ops, syop(parser_ctx(parser), op));
1921 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1924 vec_push(parser->pot, POT_TERNARY1);
1925 } else if (op->id == opid2(':','?')) {
1926 if (!vec_size(parser->pot)) {
1927 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1930 if (vec_last(parser->pot) != POT_TERNARY1) {
1931 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1934 if (!parser_close_paren(parser, &sy, false))
1936 vec_push(sy.ops, syop(parser_ctx(parser), op));
1940 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1941 vec_push(sy.ops, syop(parser_ctx(parser), op));
1942 wantop = !!(op->flags & OP_SUFFIX);
1945 if (!parser_next(parser)) {
1948 if (parser->tok == ';' ||
1949 (!parens && parser->tok == ']'))
1955 while (vec_size(sy.ops)) {
1956 if (!parser_sy_apply_operator(parser, &sy))
1960 parser->lex->flags.noops = true;
1961 if (!vec_size(sy.out)) {
1962 parseerror(parser, "empty expression");
1965 expr = sy.out[0].out;
1968 DEBUGSHUNTDO(con_out("shunt done\n"));
1969 if (vec_size(parser->pot)) {
1970 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1973 vec_free(parser->pot);
1977 parser->lex->flags.noops = true;
1983 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
1985 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
1988 if (!parser_next(parser)) {
1995 static void parser_enterblock(parser_t *parser)
1997 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1998 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1999 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
2000 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
2001 vec_push(parser->_block_ctx, parser_ctx(parser));
2004 vec_push(parser->correct_variables, correct_trie_new());
2005 vec_push(parser->correct_variables_score, NULL);
2008 static bool parser_leaveblock(parser_t *parser)
2011 size_t locals, typedefs;
2013 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
2014 parseerror(parser, "internal error: parser_leaveblock with no block");
2018 util_htdel(vec_last(parser->variables));
2019 correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
2021 vec_pop(parser->variables);
2022 vec_pop(parser->correct_variables);
2023 vec_pop(parser->correct_variables_score);
2024 if (!vec_size(parser->_blocklocals)) {
2025 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
2029 locals = vec_last(parser->_blocklocals);
2030 vec_pop(parser->_blocklocals);
2031 while (vec_size(parser->_locals) != locals) {
2032 ast_expression *e = vec_last(parser->_locals);
2033 ast_value *v = (ast_value*)e;
2034 vec_pop(parser->_locals);
2035 if (ast_istype(e, ast_value) && !v->uses) {
2036 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
2041 typedefs = vec_last(parser->_blocktypedefs);
2042 while (vec_size(parser->_typedefs) != typedefs) {
2043 ast_delete(vec_last(parser->_typedefs));
2044 vec_pop(parser->_typedefs);
2046 util_htdel(vec_last(parser->typedefs));
2047 vec_pop(parser->typedefs);
2049 vec_pop(parser->_block_ctx);
2054 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2056 vec_push(parser->_locals, e);
2057 util_htset(vec_last(parser->variables), name, (void*)e);
2061 vec_last(parser->correct_variables),
2062 &vec_last(parser->correct_variables_score),
2067 static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
2069 vec_push(parser->globals, e);
2070 util_htset(parser->htglobals, name, e);
2074 parser->correct_variables[0],
2075 &parser->correct_variables_score[0],
2080 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2084 ast_expression *prev;
2086 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING)
2089 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2092 parseerror(parser, "internal error: failed to process condition");
2097 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->expression.vtype == TYPE_VECTOR)
2099 /* vector types need to be cast to true booleans */
2100 ast_binary *bin = (ast_binary*)cond;
2101 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2103 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2105 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2108 parseerror(parser, "internal error: failed to process condition");
2115 unary = (ast_unary*)cond;
2116 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2118 cond = unary->operand;
2119 unary->operand = NULL;
2122 unary = (ast_unary*)cond;
2126 parseerror(parser, "internal error: failed to process condition");
2128 if (ifnot) *_ifnot = !*_ifnot;
2132 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2135 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2138 lex_ctx ctx = parser_ctx(parser);
2140 (void)block; /* not touching */
2142 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2143 if (!parser_next(parser)) {
2144 parseerror(parser, "expected condition or 'not'");
2147 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2149 if (!parser_next(parser)) {
2150 parseerror(parser, "expected condition in parenthesis");
2154 if (parser->tok != '(') {
2155 parseerror(parser, "expected 'if' condition in parenthesis");
2158 /* parse into the expression */
2159 if (!parser_next(parser)) {
2160 parseerror(parser, "expected 'if' condition after opening paren");
2163 /* parse the condition */
2164 cond = parse_expression_leave(parser, false, true, false);
2168 if (parser->tok != ')') {
2169 parseerror(parser, "expected closing paren after 'if' condition");
2173 /* parse into the 'then' branch */
2174 if (!parser_next(parser)) {
2175 parseerror(parser, "expected statement for on-true branch of 'if'");
2179 if (!parse_statement_or_block(parser, &ontrue)) {
2184 ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
2185 /* check for an else */
2186 if (!strcmp(parser_tokval(parser), "else")) {
2187 /* parse into the 'else' branch */
2188 if (!parser_next(parser)) {
2189 parseerror(parser, "expected on-false branch after 'else'");
2194 if (!parse_statement_or_block(parser, &onfalse)) {
2201 cond = process_condition(parser, cond, &ifnot);
2203 if (ontrue) ast_delete(ontrue);
2204 if (onfalse) ast_delete(onfalse);
2209 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2211 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2212 *out = (ast_expression*)ifthen;
2216 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2217 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2222 /* skip the 'while' and get the body */
2223 if (!parser_next(parser)) {
2224 if (OPTS_FLAG(LOOP_LABELS))
2225 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2227 parseerror(parser, "expected 'while' condition in parenthesis");
2231 if (parser->tok == ':') {
2232 if (!OPTS_FLAG(LOOP_LABELS))
2233 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2234 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2235 parseerror(parser, "expected loop label");
2238 label = util_strdup(parser_tokval(parser));
2239 if (!parser_next(parser)) {
2241 parseerror(parser, "expected 'while' condition in parenthesis");
2246 if (parser->tok != '(') {
2247 parseerror(parser, "expected 'while' condition in parenthesis");
2251 vec_push(parser->breaks, label);
2252 vec_push(parser->continues, label);
2254 rv = parse_while_go(parser, block, out);
2257 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2258 parseerror(parser, "internal error: label stack corrupted");
2264 vec_pop(parser->breaks);
2265 vec_pop(parser->continues);
2270 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2273 ast_expression *cond, *ontrue;
2277 lex_ctx ctx = parser_ctx(parser);
2279 (void)block; /* not touching */
2281 /* parse into the expression */
2282 if (!parser_next(parser)) {
2283 parseerror(parser, "expected 'while' condition after opening paren");
2286 /* parse the condition */
2287 cond = parse_expression_leave(parser, false, true, false);
2291 if (parser->tok != ')') {
2292 parseerror(parser, "expected closing paren after 'while' condition");
2296 /* parse into the 'then' branch */
2297 if (!parser_next(parser)) {
2298 parseerror(parser, "expected while-loop body");
2302 if (!parse_statement_or_block(parser, &ontrue)) {
2307 cond = process_condition(parser, cond, &ifnot);
2312 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2313 *out = (ast_expression*)aloop;
2317 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2318 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2323 /* skip the 'do' and get the body */
2324 if (!parser_next(parser)) {
2325 if (OPTS_FLAG(LOOP_LABELS))
2326 parseerror(parser, "expected loop label or body");
2328 parseerror(parser, "expected loop body");
2332 if (parser->tok == ':') {
2333 if (!OPTS_FLAG(LOOP_LABELS))
2334 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2335 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2336 parseerror(parser, "expected loop label");
2339 label = util_strdup(parser_tokval(parser));
2340 if (!parser_next(parser)) {
2342 parseerror(parser, "expected loop body");
2347 vec_push(parser->breaks, label);
2348 vec_push(parser->continues, label);
2350 rv = parse_dowhile_go(parser, block, out);
2353 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2354 parseerror(parser, "internal error: label stack corrupted");
2360 vec_pop(parser->breaks);
2361 vec_pop(parser->continues);
2366 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2369 ast_expression *cond, *ontrue;
2373 lex_ctx ctx = parser_ctx(parser);
2375 (void)block; /* not touching */
2377 if (!parse_statement_or_block(parser, &ontrue))
2380 /* expect the "while" */
2381 if (parser->tok != TOKEN_KEYWORD ||
2382 strcmp(parser_tokval(parser), "while"))
2384 parseerror(parser, "expected 'while' and condition");
2389 /* skip the 'while' and check for opening paren */
2390 if (!parser_next(parser) || parser->tok != '(') {
2391 parseerror(parser, "expected 'while' condition in parenthesis");
2395 /* parse into the expression */
2396 if (!parser_next(parser)) {
2397 parseerror(parser, "expected 'while' condition after opening paren");
2401 /* parse the condition */
2402 cond = parse_expression_leave(parser, false, true, false);
2406 if (parser->tok != ')') {
2407 parseerror(parser, "expected closing paren after 'while' condition");
2413 if (!parser_next(parser) || parser->tok != ';') {
2414 parseerror(parser, "expected semicolon after condition");
2420 if (!parser_next(parser)) {
2421 parseerror(parser, "parse error");
2427 cond = process_condition(parser, cond, &ifnot);
2432 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2433 *out = (ast_expression*)aloop;
2437 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2438 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2443 /* skip the 'for' and check for opening paren */
2444 if (!parser_next(parser)) {
2445 if (OPTS_FLAG(LOOP_LABELS))
2446 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2448 parseerror(parser, "expected 'for' expressions in parenthesis");
2452 if (parser->tok == ':') {
2453 if (!OPTS_FLAG(LOOP_LABELS))
2454 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2455 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2456 parseerror(parser, "expected loop label");
2459 label = util_strdup(parser_tokval(parser));
2460 if (!parser_next(parser)) {
2462 parseerror(parser, "expected 'for' expressions in parenthesis");
2467 if (parser->tok != '(') {
2468 parseerror(parser, "expected 'for' expressions in parenthesis");
2472 vec_push(parser->breaks, label);
2473 vec_push(parser->continues, label);
2475 rv = parse_for_go(parser, block, out);
2478 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2479 parseerror(parser, "internal error: label stack corrupted");
2485 vec_pop(parser->breaks);
2486 vec_pop(parser->continues);
2490 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2493 ast_expression *initexpr, *cond, *increment, *ontrue;
2499 lex_ctx ctx = parser_ctx(parser);
2501 parser_enterblock(parser);
2508 /* parse into the expression */
2509 if (!parser_next(parser)) {
2510 parseerror(parser, "expected 'for' initializer after opening paren");
2515 if (parser->tok == TOKEN_IDENT)
2516 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2518 if (typevar || parser->tok == TOKEN_TYPENAME) {
2520 if (opts.standard != COMPILER_GMQCC) {
2521 if (parsewarning(parser, WARN_EXTENSIONS,
2522 "current standard does not allow variable declarations in for-loop initializers"))
2526 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2529 else if (parser->tok != ';')
2531 initexpr = parse_expression_leave(parser, false, false, false);
2536 /* move on to condition */
2537 if (parser->tok != ';') {
2538 parseerror(parser, "expected semicolon after for-loop initializer");
2541 if (!parser_next(parser)) {
2542 parseerror(parser, "expected for-loop condition");
2546 /* parse the condition */
2547 if (parser->tok != ';') {
2548 cond = parse_expression_leave(parser, false, true, false);
2553 /* move on to incrementor */
2554 if (parser->tok != ';') {
2555 parseerror(parser, "expected semicolon after for-loop initializer");
2558 if (!parser_next(parser)) {
2559 parseerror(parser, "expected for-loop condition");
2563 /* parse the incrementor */
2564 if (parser->tok != ')') {
2565 increment = parse_expression_leave(parser, false, false, false);
2568 if (!ast_side_effects(increment)) {
2569 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2575 if (parser->tok != ')') {
2576 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2579 /* parse into the 'then' branch */
2580 if (!parser_next(parser)) {
2581 parseerror(parser, "expected for-loop body");
2584 if (!parse_statement_or_block(parser, &ontrue))
2588 cond = process_condition(parser, cond, &ifnot);
2592 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2593 *out = (ast_expression*)aloop;
2595 if (!parser_leaveblock(parser))
2599 if (initexpr) ast_delete(initexpr);
2600 if (cond) ast_delete(cond);
2601 if (increment) ast_delete(increment);
2602 (void)!parser_leaveblock(parser);
2606 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2608 ast_expression *exp = NULL;
2609 ast_return *ret = NULL;
2610 ast_value *expected = parser->function->vtype;
2612 lex_ctx ctx = parser_ctx(parser);
2614 (void)block; /* not touching */
2616 if (!parser_next(parser)) {
2617 parseerror(parser, "expected return expression");
2621 if (parser->tok != ';') {
2622 exp = parse_expression(parser, false, false);
2626 if (exp->expression.vtype != TYPE_NIL &&
2627 exp->expression.vtype != expected->expression.next->expression.vtype)
2629 parseerror(parser, "return with invalid expression");
2632 ret = ast_return_new(ctx, exp);
2638 if (!parser_next(parser))
2639 parseerror(parser, "parse error");
2640 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2641 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2643 ret = ast_return_new(ctx, NULL);
2645 *out = (ast_expression*)ret;
2649 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2652 unsigned int levels = 0;
2653 lex_ctx ctx = parser_ctx(parser);
2654 const char **loops = (is_continue ? parser->continues : parser->breaks);
2656 (void)block; /* not touching */
2657 if (!parser_next(parser)) {
2658 parseerror(parser, "expected semicolon or loop label");
2662 if (!vec_size(loops)) {
2664 parseerror(parser, "`continue` can only be used inside loops");
2666 parseerror(parser, "`break` can only be used inside loops or switches");
2669 if (parser->tok == TOKEN_IDENT) {
2670 if (!OPTS_FLAG(LOOP_LABELS))
2671 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2672 i = vec_size(loops);
2674 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2677 parseerror(parser, "no such loop to %s: `%s`",
2678 (is_continue ? "continue" : "break out of"),
2679 parser_tokval(parser));
2684 if (!parser_next(parser)) {
2685 parseerror(parser, "expected semicolon");
2690 if (parser->tok != ';') {
2691 parseerror(parser, "expected semicolon");
2695 if (!parser_next(parser))
2696 parseerror(parser, "parse error");
2698 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2702 /* returns true when it was a variable qualifier, false otherwise!
2703 * on error, cvq is set to CV_WRONG
2705 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2707 bool had_const = false;
2708 bool had_var = false;
2709 bool had_noref = false;
2710 bool had_attrib = false;
2711 bool had_static = false;
2716 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2718 /* parse an attribute */
2719 if (!parser_next(parser)) {
2720 parseerror(parser, "expected attribute after `[[`");
2724 if (!strcmp(parser_tokval(parser), "noreturn")) {
2725 flags |= AST_FLAG_NORETURN;
2726 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2727 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2732 else if (!strcmp(parser_tokval(parser), "noref")) {
2734 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2735 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2740 else if (!strcmp(parser_tokval(parser), "inline")) {
2741 flags |= AST_FLAG_INLINE;
2742 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2743 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2750 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2751 flags |= AST_FLAG_DEPRECATED;
2754 if (!parser_next(parser)) {
2755 parseerror(parser, "parse error in attribute");
2759 if (parser->tok == '(') {
2760 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2761 parseerror(parser, "`deprecated` attribute missing parameter");
2765 *message = util_strdup(parser_tokval(parser));
2767 if (!parser_next(parser)) {
2768 parseerror(parser, "parse error in attribute");
2772 if(parser->tok != ')') {
2773 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2777 if (!parser_next(parser)) {
2778 parseerror(parser, "parse error in attribute");
2783 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2784 parseerror(parser, "`deprecated` attribute expected `]]`");
2787 if (*message) mem_d(*message);
2795 /* Skip tokens until we hit a ]] */
2796 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2797 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2798 if (!parser_next(parser)) {
2799 parseerror(parser, "error inside attribute");
2806 else if (!strcmp(parser_tokval(parser), "static"))
2808 else if (!strcmp(parser_tokval(parser), "const"))
2810 else if (!strcmp(parser_tokval(parser), "var"))
2812 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2814 else if (!strcmp(parser_tokval(parser), "noref"))
2816 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2821 if (!parser_next(parser))
2831 *is_static = had_static;
2835 parseerror(parser, "parse error after variable qualifier");
2840 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2841 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2846 /* skip the 'while' and get the body */
2847 if (!parser_next(parser)) {
2848 if (OPTS_FLAG(LOOP_LABELS))
2849 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2851 parseerror(parser, "expected 'switch' operand in parenthesis");
2855 if (parser->tok == ':') {
2856 if (!OPTS_FLAG(LOOP_LABELS))
2857 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2858 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2859 parseerror(parser, "expected loop label");
2862 label = util_strdup(parser_tokval(parser));
2863 if (!parser_next(parser)) {
2865 parseerror(parser, "expected 'switch' operand in parenthesis");
2870 if (parser->tok != '(') {
2871 parseerror(parser, "expected 'switch' operand in parenthesis");
2875 vec_push(parser->breaks, label);
2877 rv = parse_switch_go(parser, block, out);
2880 if (vec_last(parser->breaks) != label) {
2881 parseerror(parser, "internal error: label stack corrupted");
2887 vec_pop(parser->breaks);
2892 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
2894 ast_expression *operand;
2897 ast_switch *switchnode;
2898 ast_switch_case swcase;
2901 bool noref, is_static;
2902 uint32_t qflags = 0;
2904 lex_ctx ctx = parser_ctx(parser);
2906 (void)block; /* not touching */
2909 /* parse into the expression */
2910 if (!parser_next(parser)) {
2911 parseerror(parser, "expected switch operand");
2914 /* parse the operand */
2915 operand = parse_expression_leave(parser, false, false, false);
2919 switchnode = ast_switch_new(ctx, operand);
2922 if (parser->tok != ')') {
2923 ast_delete(switchnode);
2924 parseerror(parser, "expected closing paren after 'switch' operand");
2928 /* parse over the opening paren */
2929 if (!parser_next(parser) || parser->tok != '{') {
2930 ast_delete(switchnode);
2931 parseerror(parser, "expected list of cases");
2935 if (!parser_next(parser)) {
2936 ast_delete(switchnode);
2937 parseerror(parser, "expected 'case' or 'default'");
2941 /* new block; allow some variables to be declared here */
2942 parser_enterblock(parser);
2945 if (parser->tok == TOKEN_IDENT)
2946 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2947 if (typevar || parser->tok == TOKEN_TYPENAME) {
2948 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
2949 ast_delete(switchnode);
2954 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
2956 if (cvq == CV_WRONG) {
2957 ast_delete(switchnode);
2960 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
2961 ast_delete(switchnode);
2970 while (parser->tok != '}') {
2971 ast_block *caseblock;
2973 if (!strcmp(parser_tokval(parser), "case")) {
2974 if (!parser_next(parser)) {
2975 ast_delete(switchnode);
2976 parseerror(parser, "expected expression for case");
2979 swcase.value = parse_expression_leave(parser, false, false, false);
2980 if (!swcase.value) {
2981 ast_delete(switchnode);
2982 parseerror(parser, "expected expression for case");
2985 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2986 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
2987 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2993 else if (!strcmp(parser_tokval(parser), "default")) {
2994 swcase.value = NULL;
2995 if (!parser_next(parser)) {
2996 ast_delete(switchnode);
2997 parseerror(parser, "expected colon");
3002 ast_delete(switchnode);
3003 parseerror(parser, "expected 'case' or 'default'");
3007 /* Now the colon and body */
3008 if (parser->tok != ':') {
3009 if (swcase.value) ast_unref(swcase.value);
3010 ast_delete(switchnode);
3011 parseerror(parser, "expected colon");
3015 if (!parser_next(parser)) {
3016 if (swcase.value) ast_unref(swcase.value);
3017 ast_delete(switchnode);
3018 parseerror(parser, "expected statements or case");
3021 caseblock = ast_block_new(parser_ctx(parser));
3023 if (swcase.value) ast_unref(swcase.value);
3024 ast_delete(switchnode);
3027 swcase.code = (ast_expression*)caseblock;
3028 vec_push(switchnode->cases, swcase);
3030 ast_expression *expr;
3031 if (parser->tok == '}')
3033 if (parser->tok == TOKEN_KEYWORD) {
3034 if (!strcmp(parser_tokval(parser), "case") ||
3035 !strcmp(parser_tokval(parser), "default"))
3040 if (!parse_statement(parser, caseblock, &expr, true)) {
3041 ast_delete(switchnode);
3046 if (!ast_block_add_expr(caseblock, expr)) {
3047 ast_delete(switchnode);
3053 parser_leaveblock(parser);
3056 if (parser->tok != '}') {
3057 ast_delete(switchnode);
3058 parseerror(parser, "expected closing paren of case list");
3061 if (!parser_next(parser)) {
3062 ast_delete(switchnode);
3063 parseerror(parser, "parse error after switch");
3066 *out = (ast_expression*)switchnode;
3070 /* parse computed goto sides */
3071 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
3072 ast_expression *on_true;
3073 ast_expression *on_false;
3074 ast_expression *cond;
3079 if (ast_istype(*side, ast_ternary)) {
3080 ast_ternary *tern = (ast_ternary*)*side;
3081 on_true = parse_goto_computed(parser, &tern->on_true);
3082 on_false = parse_goto_computed(parser, &tern->on_false);
3084 if (!on_true || !on_false) {
3085 parseerror(parser, "expected label or expression in ternary");
3086 if (on_true) ast_unref(on_true);
3087 if (on_false) ast_unref(on_false);
3095 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
3096 } else if (ast_istype(*side, ast_label)) {
3097 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
3098 ast_goto_set_label(gt, ((ast_label*)*side));
3100 return (ast_expression*)gt;
3105 static bool parse_goto(parser_t *parser, ast_expression **out)
3107 ast_goto *gt = NULL;
3108 ast_expression *lbl;
3110 if (!parser_next(parser))
3113 if (parser->tok != TOKEN_IDENT) {
3114 ast_expression *expression;
3116 /* could be an expression i.e computed goto :-) */
3117 if (parser->tok != '(') {
3118 parseerror(parser, "expected label name after `goto`");
3122 /* failed to parse expression for goto */
3123 if (!(expression = parse_expression(parser, false, true)) ||
3124 !(*out = parse_goto_computed(parser, &expression))) {
3125 parseerror(parser, "invalid goto expression");
3126 ast_unref(expression);
3133 /* not computed goto */
3134 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3135 lbl = parser_find_label(parser, gt->name);
3137 if (!ast_istype(lbl, ast_label)) {
3138 parseerror(parser, "internal error: label is not an ast_label");
3142 ast_goto_set_label(gt, (ast_label*)lbl);
3145 vec_push(parser->gotos, gt);
3147 if (!parser_next(parser) || parser->tok != ';') {
3148 parseerror(parser, "semicolon expected after goto label");
3151 if (!parser_next(parser)) {
3152 parseerror(parser, "parse error after goto");
3156 *out = (ast_expression*)gt;
3160 static bool parse_skipwhite(parser_t *parser)
3163 if (!parser_next(parser))
3165 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3166 return parser->tok < TOKEN_ERROR;
3169 static bool parse_eol(parser_t *parser)
3171 if (!parse_skipwhite(parser))
3173 return parser->tok == TOKEN_EOL;
3176 static bool parse_pragma_do(parser_t *parser)
3178 if (!parser_next(parser) ||
3179 parser->tok != TOKEN_IDENT ||
3180 strcmp(parser_tokval(parser), "pragma"))
3182 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3185 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3186 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3190 if (!strcmp(parser_tokval(parser), "noref")) {
3191 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3192 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3195 parser->noref = !!parser_token(parser)->constval.i;
3196 if (!parse_eol(parser)) {
3197 parseerror(parser, "parse error after `noref` pragma");
3203 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3210 static bool parse_pragma(parser_t *parser)
3213 parser->lex->flags.preprocessing = true;
3214 parser->lex->flags.mergelines = true;
3215 rv = parse_pragma_do(parser);
3216 if (parser->tok != TOKEN_EOL) {
3217 parseerror(parser, "junk after pragma");
3220 parser->lex->flags.preprocessing = false;
3221 parser->lex->flags.mergelines = false;
3222 if (!parser_next(parser)) {
3223 parseerror(parser, "parse error after pragma");
3229 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3231 bool noref, is_static;
3233 uint32_t qflags = 0;
3234 ast_value *typevar = NULL;
3235 char *vstring = NULL;
3239 if (parser->tok == TOKEN_IDENT)
3240 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3242 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3244 /* local variable */
3246 parseerror(parser, "cannot declare a variable from here");
3249 if (opts.standard == COMPILER_QCC) {
3250 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3253 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3257 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3259 if (cvq == CV_WRONG)
3261 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3263 else if (parser->tok == TOKEN_KEYWORD)
3265 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3270 if (!parser_next(parser)) {
3271 parseerror(parser, "parse error after __builtin_debug_printtype");
3275 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3277 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3278 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3279 if (!parser_next(parser)) {
3280 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3286 if (!parse_statement(parser, block, out, allow_cases))
3289 con_out("__builtin_debug_printtype: got no output node\n");
3292 ast_type_to_string(*out, ty, sizeof(ty));
3293 con_out("__builtin_debug_printtype: `%s`\n", ty);
3298 else if (!strcmp(parser_tokval(parser), "return"))
3300 return parse_return(parser, block, out);
3302 else if (!strcmp(parser_tokval(parser), "if"))
3304 return parse_if(parser, block, out);
3306 else if (!strcmp(parser_tokval(parser), "while"))
3308 return parse_while(parser, block, out);
3310 else if (!strcmp(parser_tokval(parser), "do"))
3312 return parse_dowhile(parser, block, out);
3314 else if (!strcmp(parser_tokval(parser), "for"))
3316 if (opts.standard == COMPILER_QCC) {
3317 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3320 return parse_for(parser, block, out);
3322 else if (!strcmp(parser_tokval(parser), "break"))
3324 return parse_break_continue(parser, block, out, false);
3326 else if (!strcmp(parser_tokval(parser), "continue"))
3328 return parse_break_continue(parser, block, out, true);
3330 else if (!strcmp(parser_tokval(parser), "switch"))
3332 return parse_switch(parser, block, out);
3334 else if (!strcmp(parser_tokval(parser), "case") ||
3335 !strcmp(parser_tokval(parser), "default"))
3338 parseerror(parser, "unexpected 'case' label");
3343 else if (!strcmp(parser_tokval(parser), "goto"))
3345 return parse_goto(parser, out);
3347 else if (!strcmp(parser_tokval(parser), "typedef"))
3349 if (!parser_next(parser)) {
3350 parseerror(parser, "expected type definition after 'typedef'");
3353 return parse_typedef(parser);
3355 parseerror(parser, "Unexpected keyword");
3358 else if (parser->tok == '{')
3361 inner = parse_block(parser);
3364 *out = (ast_expression*)inner;
3367 else if (parser->tok == ':')
3371 if (!parser_next(parser)) {
3372 parseerror(parser, "expected label name");
3375 if (parser->tok != TOKEN_IDENT) {
3376 parseerror(parser, "label must be an identifier");
3379 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3381 if (!label->undefined) {
3382 parseerror(parser, "label `%s` already defined", label->name);
3385 label->undefined = false;
3388 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3389 vec_push(parser->labels, label);
3391 *out = (ast_expression*)label;
3392 if (!parser_next(parser)) {
3393 parseerror(parser, "parse error after label");
3396 for (i = 0; i < vec_size(parser->gotos); ++i) {
3397 if (!strcmp(parser->gotos[i]->name, label->name)) {
3398 ast_goto_set_label(parser->gotos[i], label);
3399 vec_remove(parser->gotos, i, 1);
3405 else if (parser->tok == ';')
3407 if (!parser_next(parser)) {
3408 parseerror(parser, "parse error after empty statement");
3415 ast_expression *exp = parse_expression(parser, false, false);
3419 if (!ast_side_effects(exp)) {
3420 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3427 static bool parse_block_into(parser_t *parser, ast_block *block)
3431 parser_enterblock(parser);
3433 if (!parser_next(parser)) { /* skip the '{' */
3434 parseerror(parser, "expected function body");
3438 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3440 ast_expression *expr = NULL;
3441 if (parser->tok == '}')
3444 if (!parse_statement(parser, block, &expr, false)) {
3445 /* parseerror(parser, "parse error"); */
3451 if (!ast_block_add_expr(block, expr)) {
3458 if (parser->tok != '}') {
3461 (void)parser_next(parser);
3465 if (!parser_leaveblock(parser))
3467 return retval && !!block;
3470 static ast_block* parse_block(parser_t *parser)
3473 block = ast_block_new(parser_ctx(parser));
3476 if (!parse_block_into(parser, block)) {
3477 ast_block_delete(block);
3483 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3485 if (parser->tok == '{') {
3486 *out = (ast_expression*)parse_block(parser);
3489 return parse_statement(parser, NULL, out, false);
3492 static bool create_vector_members(ast_value *var, ast_member **me)
3495 size_t len = strlen(var->name);
3497 for (i = 0; i < 3; ++i) {
3498 char *name = (char*)mem_a(len+3);
3499 memcpy(name, var->name, len);
3501 name[len+1] = 'x'+i;
3503 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3512 do { ast_member_delete(me[--i]); } while(i);
3516 static bool parse_function_body(parser_t *parser, ast_value *var)
3518 ast_block *block = NULL;
3523 ast_expression *framenum = NULL;
3524 ast_expression *nextthink = NULL;
3525 /* None of the following have to be deleted */
3526 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3527 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3528 bool has_frame_think;
3532 has_frame_think = false;
3533 old = parser->function;
3535 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3536 parseerror(parser, "gotos/labels leaking");
3540 if (var->expression.flags & AST_FLAG_VARIADIC) {
3541 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3542 "variadic function with implementation will not be able to access additional parameters"))
3548 if (parser->tok == '[') {
3549 /* got a frame definition: [ framenum, nextthink ]
3550 * this translates to:
3551 * self.frame = framenum;
3552 * self.nextthink = time + 0.1;
3553 * self.think = nextthink;
3557 fld_think = parser_find_field(parser, "think");
3558 fld_nextthink = parser_find_field(parser, "nextthink");
3559 fld_frame = parser_find_field(parser, "frame");
3560 if (!fld_think || !fld_nextthink || !fld_frame) {
3561 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3562 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3565 gbl_time = parser_find_global(parser, "time");
3566 gbl_self = parser_find_global(parser, "self");
3567 if (!gbl_time || !gbl_self) {
3568 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3569 parseerror(parser, "please declare the following globals: `time`, `self`");
3573 if (!parser_next(parser))
3576 framenum = parse_expression_leave(parser, true, false, false);
3578 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3581 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3582 ast_unref(framenum);
3583 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3587 if (parser->tok != ',') {
3588 ast_unref(framenum);
3589 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3590 parseerror(parser, "Got a %i\n", parser->tok);
3594 if (!parser_next(parser)) {
3595 ast_unref(framenum);
3599 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3601 /* qc allows the use of not-yet-declared functions here
3602 * - this automatically creates a prototype */
3603 ast_value *thinkfunc;
3604 ast_expression *functype = fld_think->expression.next;
3606 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
3607 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
3608 ast_unref(framenum);
3609 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3613 if (!parser_next(parser)) {
3614 ast_unref(framenum);
3615 ast_delete(thinkfunc);
3619 parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
3621 nextthink = (ast_expression*)thinkfunc;
3624 nextthink = parse_expression_leave(parser, true, false, false);
3626 ast_unref(framenum);
3627 parseerror(parser, "expected a think-function in [frame,think] notation");
3632 if (!ast_istype(nextthink, ast_value)) {
3633 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3637 if (retval && parser->tok != ']') {
3638 parseerror(parser, "expected closing `]` for [frame,think] notation");
3642 if (retval && !parser_next(parser)) {
3646 if (retval && parser->tok != '{') {
3647 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3652 ast_unref(nextthink);
3653 ast_unref(framenum);
3657 has_frame_think = true;
3660 block = ast_block_new(parser_ctx(parser));
3662 parseerror(parser, "failed to allocate block");
3663 if (has_frame_think) {
3664 ast_unref(nextthink);
3665 ast_unref(framenum);
3670 if (has_frame_think) {
3672 ast_expression *self_frame;
3673 ast_expression *self_nextthink;
3674 ast_expression *self_think;
3675 ast_expression *time_plus_1;
3676 ast_store *store_frame;
3677 ast_store *store_nextthink;
3678 ast_store *store_think;
3680 ctx = parser_ctx(parser);
3681 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3682 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3683 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3685 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3686 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3688 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3689 if (self_frame) ast_delete(self_frame);
3690 if (self_nextthink) ast_delete(self_nextthink);
3691 if (self_think) ast_delete(self_think);
3692 if (time_plus_1) ast_delete(time_plus_1);
3698 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3699 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3700 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3703 ast_delete(self_frame);
3706 if (!store_nextthink) {
3707 ast_delete(self_nextthink);
3711 ast_delete(self_think);
3715 if (store_frame) ast_delete(store_frame);
3716 if (store_nextthink) ast_delete(store_nextthink);
3717 if (store_think) ast_delete(store_think);
3720 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3721 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3722 !ast_block_add_expr(block, (ast_expression*)store_think))
3729 parseerror(parser, "failed to generate code for [frame,think]");
3730 ast_unref(nextthink);
3731 ast_unref(framenum);
3737 parser_enterblock(parser);
3739 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3741 ast_value *param = var->expression.params[parami];
3744 if (param->expression.vtype != TYPE_VECTOR &&
3745 (param->expression.vtype != TYPE_FIELD ||
3746 param->expression.next->expression.vtype != TYPE_VECTOR))
3751 if (!create_vector_members(param, me)) {
3752 ast_block_delete(block);
3756 for (e = 0; e < 3; ++e) {
3757 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3758 ast_block_collect(block, (ast_expression*)me[e]);
3762 func = ast_function_new(ast_ctx(var), var->name, var);
3764 parseerror(parser, "failed to allocate function for `%s`", var->name);
3765 ast_block_delete(block);
3768 vec_push(parser->functions, func);
3770 parser->function = func;
3771 if (!parse_block_into(parser, block)) {
3772 ast_block_delete(block);
3776 vec_push(func->blocks, block);
3778 parser->function = old;
3779 if (!parser_leaveblock(parser))
3781 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3782 parseerror(parser, "internal error: local scopes left");
3786 if (parser->tok == ';')
3787 return parser_next(parser);
3788 else if (opts.standard == COMPILER_QCC)
3789 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3793 vec_pop(parser->functions);
3794 ast_function_delete(func);
3795 var->constval.vfunc = NULL;
3798 (void)!parser_leaveblock(parser);
3799 parser->function = old;
3803 static ast_expression *array_accessor_split(
3808 ast_expression *left,
3809 ast_expression *right
3815 lex_ctx ctx = ast_ctx(array);
3817 if (!left || !right) {
3818 if (left) ast_delete(left);
3819 if (right) ast_delete(right);
3823 cmp = ast_binary_new(ctx, INSTR_LT,
3824 (ast_expression*)index,
3825 (ast_expression*)parser_const_float(parser, middle));
3829 parseerror(parser, "internal error: failed to create comparison for array setter");
3833 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3835 ast_delete(cmp); /* will delete left and right */
3836 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3840 return (ast_expression*)ifthen;
3843 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3845 lex_ctx ctx = ast_ctx(array);
3847 if (from+1 == afterend) {
3848 /* set this value */
3851 ast_array_index *subscript;
3853 int assignop = type_store_instr[value->expression.vtype];
3855 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3856 assignop = INSTR_STORE_V;
3858 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3862 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3864 ast_delete(subscript);
3868 block = ast_block_new(ctx);
3874 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3879 ret = ast_return_new(ctx, NULL);
3885 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3890 return (ast_expression*)block;
3892 ast_expression *left, *right;
3893 size_t diff = afterend - from;
3894 size_t middle = from + diff/2;
3895 left = array_setter_node(parser, array, index, value, from, middle);
3896 right = array_setter_node(parser, array, index, value, middle, afterend);
3897 return array_accessor_split(parser, array, index, middle, left, right);
3901 static ast_expression *array_field_setter_node(
3910 lex_ctx ctx = ast_ctx(array);
3912 if (from+1 == afterend) {
3913 /* set this value */
3916 ast_entfield *entfield;
3917 ast_array_index *subscript;
3919 int assignop = type_storep_instr[value->expression.vtype];
3921 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3922 assignop = INSTR_STOREP_V;
3924 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3928 entfield = ast_entfield_new_force(ctx,
3929 (ast_expression*)entity,
3930 (ast_expression*)subscript,
3931 (ast_expression*)subscript);
3933 ast_delete(subscript);
3937 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3939 ast_delete(entfield);
3943 block = ast_block_new(ctx);
3949 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3954 ret = ast_return_new(ctx, NULL);
3960 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3965 return (ast_expression*)block;
3967 ast_expression *left, *right;
3968 size_t diff = afterend - from;
3969 size_t middle = from + diff/2;
3970 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3971 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3972 return array_accessor_split(parser, array, index, middle, left, right);
3976 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3978 lex_ctx ctx = ast_ctx(array);
3980 if (from+1 == afterend) {
3982 ast_array_index *subscript;
3984 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3988 ret = ast_return_new(ctx, (ast_expression*)subscript);
3990 ast_delete(subscript);
3994 return (ast_expression*)ret;
3996 ast_expression *left, *right;
3997 size_t diff = afterend - from;
3998 size_t middle = from + diff/2;
3999 left = array_getter_node(parser, array, index, from, middle);
4000 right = array_getter_node(parser, array, index, middle, afterend);
4001 return array_accessor_split(parser, array, index, middle, left, right);
4005 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
4007 ast_function *func = NULL;
4008 ast_value *fval = NULL;
4009 ast_block *body = NULL;
4011 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
4013 parseerror(parser, "failed to create accessor function value");
4017 func = ast_function_new(ast_ctx(array), funcname, fval);
4020 parseerror(parser, "failed to create accessor function node");
4024 body = ast_block_new(ast_ctx(array));
4026 parseerror(parser, "failed to create block for array accessor");
4032 vec_push(func->blocks, body);
4035 vec_push(parser->accessors, fval);
4040 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
4042 ast_expression *root = NULL;
4043 ast_value *index = NULL;
4044 ast_value *value = NULL;
4048 if (!ast_istype(array->expression.next, ast_value)) {
4049 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4053 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4055 func = fval->constval.vfunc;
4056 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4058 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4059 value = ast_value_copy((ast_value*)array->expression.next);
4061 if (!index || !value) {
4062 parseerror(parser, "failed to create locals for array accessor");
4065 (void)!ast_value_set_name(value, "value"); /* not important */
4066 vec_push(fval->expression.params, index);
4067 vec_push(fval->expression.params, value);
4069 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
4071 parseerror(parser, "failed to build accessor search tree");
4075 array->setter = fval;
4076 return ast_block_add_expr(func->blocks[0], root);
4078 if (index) ast_delete(index);
4079 if (value) ast_delete(value);
4080 if (root) ast_delete(root);
4086 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
4088 ast_expression *root = NULL;
4089 ast_value *entity = NULL;
4090 ast_value *index = NULL;
4091 ast_value *value = NULL;
4095 if (!ast_istype(array->expression.next, ast_value)) {
4096 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4100 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4102 func = fval->constval.vfunc;
4103 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4105 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4106 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4107 value = ast_value_copy((ast_value*)array->expression.next);
4108 if (!entity || !index || !value) {
4109 parseerror(parser, "failed to create locals for array accessor");
4112 (void)!ast_value_set_name(value, "value"); /* not important */
4113 vec_push(fval->expression.params, entity);
4114 vec_push(fval->expression.params, index);
4115 vec_push(fval->expression.params, value);
4117 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4119 parseerror(parser, "failed to build accessor search tree");
4123 array->setter = fval;
4124 return ast_block_add_expr(func->blocks[0], root);
4126 if (entity) ast_delete(entity);
4127 if (index) ast_delete(index);
4128 if (value) ast_delete(value);
4129 if (root) ast_delete(root);
4135 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4137 ast_expression *root = NULL;
4138 ast_value *index = NULL;
4142 /* NOTE: checking array->expression.next rather than elemtype since
4143 * for fields elemtype is a temporary fieldtype.
4145 if (!ast_istype(array->expression.next, ast_value)) {
4146 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4150 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4152 func = fval->constval.vfunc;
4153 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4155 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4158 parseerror(parser, "failed to create locals for array accessor");
4161 vec_push(fval->expression.params, index);
4163 root = array_getter_node(parser, array, index, 0, array->expression.count);
4165 parseerror(parser, "failed to build accessor search tree");
4169 array->getter = fval;
4170 return ast_block_add_expr(func->blocks[0], root);
4172 if (index) ast_delete(index);
4173 if (root) ast_delete(root);
4179 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4180 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4188 bool variadic = false;
4190 ctx = parser_ctx(parser);
4192 /* for the sake of less code we parse-in in this function */
4193 if (!parser_next(parser)) {
4194 parseerror(parser, "expected parameter list");
4200 /* parse variables until we hit a closing paren */
4201 while (parser->tok != ')') {
4203 /* there must be commas between them */
4204 if (parser->tok != ',') {
4205 parseerror(parser, "expected comma or end of parameter list");
4208 if (!parser_next(parser)) {
4209 parseerror(parser, "expected parameter");
4215 if (parser->tok == TOKEN_DOTS) {
4216 /* '...' indicates a varargs function */
4218 if (!parser_next(parser)) {
4219 parseerror(parser, "expected parameter");
4222 if (parser->tok != ')') {
4223 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4229 /* for anything else just parse a typename */
4230 param = parse_typename(parser, NULL, NULL);
4233 vec_push(params, param);
4234 if (param->expression.vtype >= TYPE_VARIANT) {
4235 char tname[1024]; /* typename is reserved in C++ */
4236 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4237 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4243 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4247 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
4248 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4251 if (!parser_next(parser)) {
4252 parseerror(parser, "parse error after typename");
4256 /* now turn 'var' into a function type */
4257 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4258 fval->expression.next = (ast_expression*)var;
4260 fval->expression.flags |= AST_FLAG_VARIADIC;
4263 var->expression.params = params;
4270 for (i = 0; i < vec_size(params); ++i)
4271 ast_delete(params[i]);
4276 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4278 ast_expression *cexp;
4279 ast_value *cval, *tmp;
4282 ctx = parser_ctx(parser);
4284 if (!parser_next(parser)) {
4286 parseerror(parser, "expected array-size");
4290 cexp = parse_expression_leave(parser, true, false, false);
4292 if (!cexp || !ast_istype(cexp, ast_value)) {
4296 parseerror(parser, "expected array-size as constant positive integer");
4299 cval = (ast_value*)cexp;
4301 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4302 tmp->expression.next = (ast_expression*)var;
4305 if (cval->expression.vtype == TYPE_INTEGER)
4306 tmp->expression.count = cval->constval.vint;
4307 else if (cval->expression.vtype == TYPE_FLOAT)
4308 tmp->expression.count = cval->constval.vfloat;
4312 parseerror(parser, "array-size must be a positive integer constant");
4317 if (parser->tok != ']') {
4319 parseerror(parser, "expected ']' after array-size");
4322 if (!parser_next(parser)) {
4324 parseerror(parser, "error after parsing array size");
4330 /* Parse a complete typename.
4331 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4332 * but when parsing variables separated by comma
4333 * 'storebase' should point to where the base-type should be kept.
4334 * The base type makes up every bit of type information which comes *before* the
4337 * The following will be parsed in its entirety:
4339 * The 'basetype' in this case is 'void()'
4340 * and if there's a comma after it, say:
4342 * then the type-information 'void()' can be stored in 'storebase'
4344 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4346 ast_value *var, *tmp;
4349 const char *name = NULL;
4350 bool isfield = false;
4351 bool wasarray = false;
4352 size_t morefields = 0;
4354 ctx = parser_ctx(parser);
4356 /* types may start with a dot */
4357 if (parser->tok == '.') {
4359 /* if we parsed a dot we need a typename now */
4360 if (!parser_next(parser)) {
4361 parseerror(parser, "expected typename for field definition");
4365 /* Further dots are handled seperately because they won't be part of the
4368 while (parser->tok == '.') {
4370 if (!parser_next(parser)) {
4371 parseerror(parser, "expected typename for field definition");
4376 if (parser->tok == TOKEN_IDENT)
4377 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4378 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4379 parseerror(parser, "expected typename");
4383 /* generate the basic type value */
4384 if (cached_typedef) {
4385 var = ast_value_copy(cached_typedef);
4386 ast_value_set_name(var, "<type(from_def)>");
4388 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4390 for (; morefields; --morefields) {
4391 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4392 tmp->expression.next = (ast_expression*)var;
4396 /* do not yet turn into a field - remember:
4397 * .void() foo; is a field too
4398 * .void()() foo; is a function
4402 if (!parser_next(parser)) {
4404 parseerror(parser, "parse error after typename");
4408 /* an opening paren now starts the parameter-list of a function
4409 * this is where original-QC has parameter lists.
4410 * We allow a single parameter list here.
4411 * Much like fteqcc we don't allow `float()() x`
4413 if (parser->tok == '(') {
4414 var = parse_parameter_list(parser, var);
4419 /* store the base if requested */
4421 *storebase = ast_value_copy(var);
4423 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4424 tmp->expression.next = (ast_expression*)*storebase;
4429 /* there may be a name now */
4430 if (parser->tok == TOKEN_IDENT) {
4431 name = util_strdup(parser_tokval(parser));
4433 if (!parser_next(parser)) {
4435 parseerror(parser, "error after variable or field declaration");
4440 /* now this may be an array */
4441 if (parser->tok == '[') {
4443 var = parse_arraysize(parser, var);
4448 /* This is the point where we can turn it into a field */
4450 /* turn it into a field if desired */
4451 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4452 tmp->expression.next = (ast_expression*)var;
4456 /* now there may be function parens again */
4457 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
4458 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4459 if (parser->tok == '(' && wasarray)
4460 parseerror(parser, "arrays as part of a return type is not supported");
4461 while (parser->tok == '(') {
4462 var = parse_parameter_list(parser, var);
4471 /* finally name it */
4473 if (!ast_value_set_name(var, name)) {
4475 parseerror(parser, "internal error: failed to set name");
4478 /* free the name, ast_value_set_name duplicates */
4485 static bool parse_typedef(parser_t *parser)
4487 ast_value *typevar, *oldtype;
4488 ast_expression *old;
4490 typevar = parse_typename(parser, NULL, NULL);
4495 if ( (old = parser_find_var(parser, typevar->name)) ) {
4496 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4497 " -> `%s` has been declared here: %s:%i",
4498 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4499 ast_delete(typevar);
4503 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4504 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4505 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4506 ast_delete(typevar);
4510 vec_push(parser->_typedefs, typevar);
4511 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4513 if (parser->tok != ';') {
4514 parseerror(parser, "expected semicolon after typedef");
4517 if (!parser_next(parser)) {
4518 parseerror(parser, "parse error after typedef");
4525 static const char *cvq_to_str(int cvq) {
4527 case CV_NONE: return "none";
4528 case CV_VAR: return "`var`";
4529 case CV_CONST: return "`const`";
4530 default: return "<INVALID>";
4534 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4537 if (proto->cvq != var->cvq) {
4538 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4539 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4540 parser->tok == '='))
4542 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
4543 "`%s` declared with different qualifiers: %s\n"
4544 " -> previous declaration here: %s:%i uses %s",
4545 var->name, cvq_to_str(var->cvq),
4546 ast_ctx(proto).file, ast_ctx(proto).line,
4547 cvq_to_str(proto->cvq));
4550 av = (var ->expression.flags & AST_FLAG_NORETURN);
4551 ao = (proto->expression.flags & AST_FLAG_NORETURN);
4553 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
4554 "`%s` declared with different attributes%s\n"
4555 " -> previous declaration here: %s:%i",
4556 var->name, (av ? ": noreturn" : ""),
4557 ast_ctx(proto).file, ast_ctx(proto).line,
4558 (ao ? ": noreturn" : ""));
4563 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)
4567 ast_expression *old;
4571 ast_value *basetype = NULL;
4573 bool isparam = false;
4574 bool isvector = false;
4575 bool cleanvar = true;
4576 bool wasarray = false;
4580 if (!localblock && is_static)
4581 parseerror(parser, "`static` qualifier is not supported in global scope");
4583 /* get the first complete variable */
4584 var = parse_typename(parser, &basetype, cached_typedef);
4587 ast_delete(basetype);
4595 /* Part 0: finish the type */
4596 if (parser->tok == '(') {
4597 if (opts.standard == COMPILER_QCC)
4598 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4599 var = parse_parameter_list(parser, var);
4605 /* we only allow 1-dimensional arrays */
4606 if (parser->tok == '[') {
4608 var = parse_arraysize(parser, var);
4614 if (parser->tok == '(' && wasarray) {
4615 parseerror(parser, "arrays as part of a return type is not supported");
4616 /* we'll still parse the type completely for now */
4618 /* for functions returning functions */
4619 while (parser->tok == '(') {
4620 if (opts.standard == COMPILER_QCC)
4621 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4622 var = parse_parameter_list(parser, var);
4629 var->cvq = qualifier;
4630 var->expression.flags |= qflags;
4631 if (var->expression.flags & AST_FLAG_DEPRECATED)
4632 var->desc = vstring;
4635 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
4636 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
4637 * is then filled with the previous definition and the parameter-names replaced.
4639 if (!strcmp(var->name, "nil")) {
4640 if (OPTS_FLAG(UNTYPED_NIL)) {
4641 if (!localblock || !OPTS_FLAG(PERMISSIVE))
4642 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
4644 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
4647 /* Deal with end_sys_ vars */
4649 if (!strcmp(var->name, "end_sys_globals")) {
4651 parser->crc_globals = vec_size(parser->globals);
4654 else if (!strcmp(var->name, "end_sys_fields")) {
4656 parser->crc_fields = vec_size(parser->fields);
4659 if (was_end && var->expression.vtype == TYPE_FIELD) {
4660 if (parsewarning(parser, WARN_END_SYS_FIELDS,
4661 "global '%s' hint should not be a field",
4662 parser_tokval(parser)))
4669 if (!nofields && var->expression.vtype == TYPE_FIELD)
4671 /* deal with field declarations */
4672 old = parser_find_field(parser, var->name);
4674 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
4675 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
4684 parseerror(parser, "field `%s` already declared here: %s:%i",
4685 var->name, ast_ctx(old).file, ast_ctx(old).line);
4690 if (opts.standard == COMPILER_QCC &&
4691 (old = parser_find_global(parser, var->name)))
4693 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4694 parseerror(parser, "field `%s` already declared here: %s:%i",
4695 var->name, ast_ctx(old).file, ast_ctx(old).line);
4702 /* deal with other globals */
4703 old = parser_find_global(parser, var->name);
4704 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
4706 /* This is a function which had a prototype */
4707 if (!ast_istype(old, ast_value)) {
4708 parseerror(parser, "internal error: prototype is not an ast_value");
4712 proto = (ast_value*)old;
4713 proto->desc = var->desc;
4714 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
4715 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
4717 ast_ctx(proto).file, ast_ctx(proto).line);
4721 /* we need the new parameter-names */
4722 for (i = 0; i < vec_size(proto->expression.params); ++i)
4723 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
4724 if (!parser_check_qualifiers(parser, var, proto)) {
4731 proto->expression.flags |= var->expression.flags;
4739 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
4740 "global `%s` already declared here: %s:%i",
4741 var->name, ast_ctx(old).file, ast_ctx(old).line))
4746 proto = (ast_value*)old;
4747 if (!ast_istype(old, ast_value)) {
4748 parseerror(parser, "internal error: not an ast_value");
4753 if (!parser_check_qualifiers(parser, var, proto)) {
4758 proto->expression.flags |= var->expression.flags;
4762 if (opts.standard == COMPILER_QCC &&
4763 (old = parser_find_field(parser, var->name)))
4765 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4766 parseerror(parser, "global `%s` already declared here: %s:%i",
4767 var->name, ast_ctx(old).file, ast_ctx(old).line);
4774 else /* it's not a global */
4776 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4777 if (old && !isparam) {
4778 parseerror(parser, "local `%s` already declared here: %s:%i",
4779 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4783 old = parser_find_local(parser, var->name, 0, &isparam);
4784 if (old && isparam) {
4785 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4786 "local `%s` is shadowing a parameter", var->name))
4788 parseerror(parser, "local `%s` already declared here: %s:%i",
4789 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4793 if (opts.standard != COMPILER_GMQCC) {
4801 /* in a noref section we simply bump the usecount */
4802 if (noref || parser->noref)
4806 * Create the global/local, and deal with vector types.
4809 if (var->expression.vtype == TYPE_VECTOR)
4811 else if (var->expression.vtype == TYPE_FIELD &&
4812 var->expression.next->expression.vtype == TYPE_VECTOR)
4816 if (!create_vector_members(var, me)) {
4823 /* deal with global variables, fields, functions */
4824 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4825 var->isfield = true;
4826 vec_push(parser->fields, (ast_expression*)var);
4827 util_htset(parser->htfields, var->name, var);
4829 for (i = 0; i < 3; ++i) {
4830 vec_push(parser->fields, (ast_expression*)me[i]);
4831 util_htset(parser->htfields, me[i]->name, me[i]);
4836 parser_addglobal(parser, var->name, (ast_expression*)var);
4838 for (i = 0; i < 3; ++i) {
4839 parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
4845 /* a static adds itself to be generated like any other global
4846 * but is added to the local namespace instead
4848 char *defname = NULL;
4849 size_t prefix_len, ln;
4851 ln = strlen(parser->function->name);
4852 vec_append(defname, ln, parser->function->name);
4854 vec_append(defname, 2, "::");
4855 /* remember the length up to here */
4856 prefix_len = vec_size(defname);
4858 /* Add it to the local scope */
4859 util_htset(vec_last(parser->variables), var->name, (void*)var);
4863 vec_last(parser->correct_variables),
4864 &vec_last(parser->correct_variables_score),
4868 /* now rename the global */
4869 ln = strlen(var->name);
4870 vec_append(defname, ln, var->name);
4871 ast_value_set_name(var, defname);
4873 /* push it to the to-be-generated globals */
4874 vec_push(parser->globals, (ast_expression*)var);
4876 /* same game for the vector members */
4878 for (i = 0; i < 3; ++i) {
4879 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
4883 vec_last(parser->correct_variables),
4884 &vec_last(parser->correct_variables_score),
4888 vec_shrinkto(defname, prefix_len);
4889 ln = strlen(me[i]->name);
4890 vec_append(defname, ln, me[i]->name);
4891 ast_member_set_name(me[i], defname);
4893 vec_push(parser->globals, (ast_expression*)me[i]);
4898 vec_push(localblock->locals, var);
4899 parser_addlocal(parser, var->name, (ast_expression*)var);
4901 for (i = 0; i < 3; ++i) {
4902 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4903 ast_block_collect(localblock, (ast_expression*)me[i]);
4909 me[0] = me[1] = me[2] = NULL;
4914 if (var->expression.vtype == TYPE_ARRAY) {
4916 snprintf(name, sizeof(name), "%s##SET", var->name);
4917 if (!parser_create_array_setter(parser, var, name))
4919 snprintf(name, sizeof(name), "%s##GET", var->name);
4920 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4923 else if (!localblock && !nofields &&
4924 var->expression.vtype == TYPE_FIELD &&
4925 var->expression.next->expression.vtype == TYPE_ARRAY)
4928 ast_expression *telem;
4930 ast_value *array = (ast_value*)var->expression.next;
4932 if (!ast_istype(var->expression.next, ast_value)) {
4933 parseerror(parser, "internal error: field element type must be an ast_value");
4937 snprintf(name, sizeof(name), "%s##SETF", var->name);
4938 if (!parser_create_array_field_setter(parser, array, name))
4941 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4942 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4943 tfield->expression.next = telem;
4944 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4945 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4953 if (parser->tok == ';') {
4954 ast_delete(basetype);
4955 if (!parser_next(parser)) {
4956 parseerror(parser, "error after variable declaration");
4962 if (parser->tok == ',')
4966 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4969 parseerror(parser, "missing comma or semicolon while parsing variables");
4973 if (localblock && opts.standard == COMPILER_QCC) {
4974 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4975 "initializing expression turns variable `%s` into a constant in this standard",
4982 if (parser->tok != '{') {
4983 if (parser->tok != '=') {
4984 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4988 if (!parser_next(parser)) {
4989 parseerror(parser, "error parsing initializer");
4993 else if (opts.standard == COMPILER_QCC) {
4994 parseerror(parser, "expected '=' before function body in this standard");
4997 if (parser->tok == '#') {
4998 ast_function *func = NULL;
5001 parseerror(parser, "cannot declare builtins within functions");
5004 if (var->expression.vtype != TYPE_FUNCTION) {
5005 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
5008 if (!parser_next(parser)) {
5009 parseerror(parser, "expected builtin number");
5012 if (parser->tok != TOKEN_INTCONST) {
5013 parseerror(parser, "builtin number must be an integer constant");
5016 if (parser_token(parser)->constval.i < 0) {
5017 parseerror(parser, "builtin number must be an integer greater than zero");
5021 if (var->hasvalue) {
5022 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
5023 "builtin `%s` has already been defined\n"
5024 " -> previous declaration here: %s:%i",
5025 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
5029 func = ast_function_new(ast_ctx(var), var->name, var);
5031 parseerror(parser, "failed to allocate function for `%s`", var->name);
5034 vec_push(parser->functions, func);
5036 func->builtin = -parser_token(parser)->constval.i-1;
5039 if (!parser_next(parser)) {
5040 parseerror(parser, "expected comma or semicolon");
5042 ast_function_delete(func);
5043 var->constval.vfunc = NULL;
5047 else if (parser->tok == '{' || parser->tok == '[')
5050 parseerror(parser, "cannot declare functions within functions");
5055 ast_ctx(proto) = parser_ctx(parser);
5057 if (!parse_function_body(parser, var))
5059 ast_delete(basetype);
5060 for (i = 0; i < vec_size(parser->gotos); ++i)
5061 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
5062 vec_free(parser->gotos);
5063 vec_free(parser->labels);
5066 ast_expression *cexp;
5069 cexp = parse_expression_leave(parser, true, false, false);
5074 cval = (ast_value*)cexp;
5075 if (cval != parser->nil &&
5076 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
5079 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
5083 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
5084 qualifier != CV_VAR)
5086 var->cvq = CV_CONST;
5088 if (cval == parser->nil)
5089 var->expression.flags |= AST_FLAG_INITIALIZED;
5092 var->hasvalue = true;
5093 if (cval->expression.vtype == TYPE_STRING)
5094 var->constval.vstring = parser_strdup(cval->constval.vstring);
5095 else if (cval->expression.vtype == TYPE_FIELD)
5096 var->constval.vfield = cval;
5098 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5104 shunt sy = { NULL, NULL };
5107 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5108 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5109 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5110 if (!parser_sy_apply_operator(parser, &sy))
5113 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5114 parseerror(parser, "internal error: leaked operands");
5115 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5125 if (parser->tok == ',') {
5126 if (!parser_next(parser)) {
5127 parseerror(parser, "expected another variable");
5131 if (parser->tok != TOKEN_IDENT) {
5132 parseerror(parser, "expected another variable");
5135 var = ast_value_copy(basetype);
5137 ast_value_set_name(var, parser_tokval(parser));
5138 if (!parser_next(parser)) {
5139 parseerror(parser, "error parsing variable declaration");
5145 if (parser->tok != ';') {
5146 parseerror(parser, "missing semicolon after variables");
5150 if (!parser_next(parser)) {
5151 parseerror(parser, "parse error after variable declaration");
5155 ast_delete(basetype);
5159 if (cleanvar && var)
5161 ast_delete(basetype);
5165 ast_delete(basetype);
5166 if (cleanvar && var)
5168 if (me[0]) ast_member_delete(me[0]);
5169 if (me[1]) ast_member_delete(me[1]);
5170 if (me[2]) ast_member_delete(me[2]);
5174 static bool parser_global_statement(parser_t *parser)
5178 bool is_static = false;
5179 uint32_t qflags = 0;
5180 ast_value *istype = NULL;
5181 char *vstring = NULL;
5183 if (parser->tok == TOKEN_IDENT)
5184 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5186 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5188 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5190 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5192 if (cvq == CV_WRONG)
5194 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5196 else if (parser->tok == TOKEN_KEYWORD)
5198 if (!strcmp(parser_tokval(parser), "typedef")) {
5199 if (!parser_next(parser)) {
5200 parseerror(parser, "expected type definition after 'typedef'");
5203 return parse_typedef(parser);
5205 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5208 else if (parser->tok == '#')
5210 return parse_pragma(parser);
5212 else if (parser->tok == '$')
5214 if (!parser_next(parser)) {
5215 parseerror(parser, "parse error");
5221 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
5227 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5229 return util_crc16(old, str, strlen(str));
5232 static void progdefs_crc_file(const char *str)
5234 /* write to progdefs.h here */
5238 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5240 old = progdefs_crc_sum(old, str);
5241 progdefs_crc_file(str);
5245 static void generate_checksum(parser_t *parser)
5247 uint16_t crc = 0xFFFF;
5251 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5252 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5254 progdefs_crc_file("\tint\tpad;\n");
5255 progdefs_crc_file("\tint\tofs_return[3];\n");
5256 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5257 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5258 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5259 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5260 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5261 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5262 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5263 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5265 for (i = 0; i < parser->crc_globals; ++i) {
5266 if (!ast_istype(parser->globals[i], ast_value))
5268 value = (ast_value*)(parser->globals[i]);
5269 switch (value->expression.vtype) {
5270 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5271 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5272 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5273 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5275 crc = progdefs_crc_both(crc, "\tint\t");
5278 crc = progdefs_crc_both(crc, value->name);
5279 crc = progdefs_crc_both(crc, ";\n");
5281 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5282 for (i = 0; i < parser->crc_fields; ++i) {
5283 if (!ast_istype(parser->fields[i], ast_value))
5285 value = (ast_value*)(parser->fields[i]);
5286 switch (value->expression.next->expression.vtype) {
5287 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5288 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5289 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5290 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5292 crc = progdefs_crc_both(crc, "\tint\t");
5295 crc = progdefs_crc_both(crc, value->name);
5296 crc = progdefs_crc_both(crc, ";\n");
5298 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5303 static parser_t *parser;
5310 parser = (parser_t*)mem_a(sizeof(parser_t));
5314 memset(parser, 0, sizeof(*parser));
5316 for (i = 0; i < operator_count; ++i) {
5317 if (operators[i].id == opid1('=')) {
5318 parser->assign_op = operators+i;
5322 if (!parser->assign_op) {
5323 printf("internal error: initializing parser: failed to find assign operator\n");
5328 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
5329 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
5330 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
5331 vec_push(parser->_blocktypedefs, 0);
5334 vec_push(parser->correct_variables, correct_trie_new());
5335 vec_push(parser->correct_variables_score, NULL);
5337 empty_ctx.file = "<internal>";
5339 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
5340 parser->nil->cvq = CV_CONST;
5341 if (OPTS_FLAG(UNTYPED_NIL))
5342 util_htset(parser->htglobals, "nil", (void*)parser->nil);
5346 bool parser_compile()
5348 /* initial lexer/parser state */
5349 parser->lex->flags.noops = true;
5351 if (parser_next(parser))
5353 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
5355 if (!parser_global_statement(parser)) {
5356 if (parser->tok == TOKEN_EOF)
5357 parseerror(parser, "unexpected eof");
5358 else if (compile_errors)
5359 parseerror(parser, "there have been errors, bailing out");
5360 lex_close(parser->lex);
5366 parseerror(parser, "parse error");
5367 lex_close(parser->lex);
5372 lex_close(parser->lex);
5375 return !compile_errors;
5378 bool parser_compile_file(const char *filename)
5380 parser->lex = lex_open(filename);
5382 con_err("failed to open file \"%s\"\n", filename);
5385 return parser_compile();
5388 bool parser_compile_string(const char *name, const char *str, size_t len)
5390 parser->lex = lex_open_string(str, len, name);
5392 con_err("failed to create lexer for string \"%s\"\n", name);
5395 return parser_compile();
5398 void parser_cleanup()
5401 for (i = 0; i < vec_size(parser->accessors); ++i) {
5402 ast_delete(parser->accessors[i]->constval.vfunc);
5403 parser->accessors[i]->constval.vfunc = NULL;
5404 ast_delete(parser->accessors[i]);
5406 for (i = 0; i < vec_size(parser->functions); ++i) {
5407 ast_delete(parser->functions[i]);
5409 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5410 ast_delete(parser->imm_vector[i]);
5412 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5413 ast_delete(parser->imm_string[i]);
5415 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5416 ast_delete(parser->imm_float[i]);
5418 for (i = 0; i < vec_size(parser->fields); ++i) {
5419 ast_delete(parser->fields[i]);
5421 for (i = 0; i < vec_size(parser->globals); ++i) {
5422 ast_delete(parser->globals[i]);
5424 vec_free(parser->accessors);
5425 vec_free(parser->functions);
5426 vec_free(parser->imm_vector);
5427 vec_free(parser->imm_string);
5428 vec_free(parser->imm_float);
5429 vec_free(parser->globals);
5430 vec_free(parser->fields);
5432 for (i = 0; i < vec_size(parser->variables); ++i)
5433 util_htdel(parser->variables[i]);
5434 vec_free(parser->variables);
5435 vec_free(parser->_blocklocals);
5436 vec_free(parser->_locals);
5439 for (i = 0; i < vec_size(parser->correct_variables); ++i) {
5440 correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
5442 vec_free(parser->correct_variables);
5443 vec_free(parser->correct_variables_score);
5446 for (i = 0; i < vec_size(parser->_typedefs); ++i)
5447 ast_delete(parser->_typedefs[i]);
5448 vec_free(parser->_typedefs);
5449 for (i = 0; i < vec_size(parser->typedefs); ++i)
5450 util_htdel(parser->typedefs[i]);
5451 vec_free(parser->typedefs);
5452 vec_free(parser->_blocktypedefs);
5454 vec_free(parser->_block_ctx);
5456 vec_free(parser->labels);
5457 vec_free(parser->gotos);
5458 vec_free(parser->breaks);
5459 vec_free(parser->continues);
5461 ast_value_delete(parser->nil);
5466 bool parser_finish(const char *output)
5472 if (compile_errors) {
5473 con_out("*** there were compile errors\n");
5477 ir = ir_builder_new("gmqcc_out");
5479 con_out("failed to allocate builder\n");
5483 for (i = 0; i < vec_size(parser->fields); ++i) {
5486 if (!ast_istype(parser->fields[i], ast_value))
5488 field = (ast_value*)parser->fields[i];
5489 hasvalue = field->hasvalue;
5490 field->hasvalue = false;
5491 if (!ast_global_codegen((ast_value*)field, ir, true)) {
5492 con_out("failed to generate field %s\n", field->name);
5493 ir_builder_delete(ir);
5498 ast_expression *subtype;
5499 field->hasvalue = true;
5500 subtype = field->expression.next;
5501 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
5502 if (subtype->expression.vtype == TYPE_FIELD)
5503 ifld->fieldtype = subtype->expression.next->expression.vtype;
5504 else if (subtype->expression.vtype == TYPE_FUNCTION)
5505 ifld->outtype = subtype->expression.next->expression.vtype;
5506 (void)!ir_value_set_field(field->ir_v, ifld);
5509 for (i = 0; i < vec_size(parser->globals); ++i) {
5511 if (!ast_istype(parser->globals[i], ast_value))
5513 asvalue = (ast_value*)(parser->globals[i]);
5514 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
5515 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
5516 "unused global: `%s`", asvalue->name);
5518 if (!ast_global_codegen(asvalue, ir, false)) {
5519 con_out("failed to generate global %s\n", asvalue->name);
5520 ir_builder_delete(ir);
5524 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5525 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
5526 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
5527 ir_builder_delete(ir);
5531 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5532 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
5533 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
5534 ir_builder_delete(ir);
5538 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5539 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
5540 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
5541 ir_builder_delete(ir);
5545 for (i = 0; i < vec_size(parser->globals); ++i) {
5547 if (!ast_istype(parser->globals[i], ast_value))
5549 asvalue = (ast_value*)(parser->globals[i]);
5550 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
5552 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
5553 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
5554 "uninitialized constant: `%s`",
5556 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
5557 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
5558 "uninitialized global: `%s`",
5561 if (!ast_generate_accessors(asvalue, ir)) {
5562 ir_builder_delete(ir);
5566 for (i = 0; i < vec_size(parser->fields); ++i) {
5568 asvalue = (ast_value*)(parser->fields[i]->expression.next);
5570 if (!ast_istype((ast_expression*)asvalue, ast_value))
5572 if (asvalue->expression.vtype != TYPE_ARRAY)
5574 if (!ast_generate_accessors(asvalue, ir)) {
5575 ir_builder_delete(ir);
5579 for (i = 0; i < vec_size(parser->functions); ++i) {
5580 if (!ast_function_codegen(parser->functions[i], ir)) {
5581 con_out("failed to generate function %s\n", parser->functions[i]->name);
5582 ir_builder_delete(ir);
5587 ir_builder_dump(ir, con_out);
5588 for (i = 0; i < vec_size(parser->functions); ++i) {
5589 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
5590 con_out("failed to finalize function %s\n", parser->functions[i]->name);
5591 ir_builder_delete(ir);
5596 if (compile_Werrors) {
5597 con_out("*** there were warnings treated as errors\n");
5598 compile_show_werrors();
5604 ir_builder_dump(ir, con_out);
5606 generate_checksum(parser);
5608 if (!ir_builder_generate(ir, output)) {
5609 con_out("*** failed to generate output file\n");
5610 ir_builder_delete(ir);
5615 ir_builder_delete(ir);