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
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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 /* not to be used directly, we use the hash table */
78 ast_expression **_locals;
80 ast_value **_typedefs;
81 size_t *_blocktypedefs;
84 /* we store the '=' operator info */
85 const oper_info *assign_op;
87 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
88 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
89 * anything else: type error
93 /* Keep track of our ternary vs parenthesis nesting state.
94 * If we reach a 'comma' operator in a ternary without a paren,
95 * we shall trigger -Wternary-precedence.
103 static const ast_expression *intrinsic_debug_typestring = (ast_expression*)0x10;
105 static void parser_enterblock(parser_t *parser);
106 static bool parser_leaveblock(parser_t *parser);
107 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
108 static bool parse_typedef(parser_t *parser);
109 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);
110 static ast_block* parse_block(parser_t *parser);
111 static bool parse_block_into(parser_t *parser, ast_block *block);
112 static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
113 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
114 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
115 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
117 static void parseerror(parser_t *parser, const char *fmt, ...)
121 vcompile_error(parser->lex->tok.ctx, fmt, ap);
125 /* returns true if it counts as an error */
126 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
131 r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
136 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
141 r = vcompile_warning(ctx, warntype, fmt, ap);
146 /**********************************************************************
147 * some maths used for constant folding
150 vector vec3_add(vector a, vector b)
159 vector vec3_sub(vector a, vector b)
168 qcfloat vec3_mulvv(vector a, vector b)
170 return (a.x * b.x + a.y * b.y + a.z * b.z);
173 vector vec3_mulvf(vector a, float b)
182 /**********************************************************************
186 bool parser_next(parser_t *parser)
188 /* lex_do kills the previous token */
189 parser->tok = lex_do(parser->lex);
190 if (parser->tok == TOKEN_EOF)
192 if (parser->tok >= TOKEN_ERROR) {
193 parseerror(parser, "lex error");
199 #define parser_tokval(p) ((p)->lex->tok.value)
200 #define parser_token(p) (&((p)->lex->tok))
201 #define parser_ctx(p) ((p)->lex->tok.ctx)
203 static ast_value* parser_const_float(parser_t *parser, double d)
207 for (i = 0; i < vec_size(parser->imm_float); ++i) {
208 const double compare = parser->imm_float[i]->constval.vfloat;
209 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
210 return parser->imm_float[i];
212 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
214 out->hasvalue = true;
215 out->constval.vfloat = d;
216 vec_push(parser->imm_float, out);
220 static ast_value* parser_const_float_0(parser_t *parser)
222 if (!parser->imm_float_zero)
223 parser->imm_float_zero = parser_const_float(parser, 0);
224 return parser->imm_float_zero;
227 static ast_value* parser_const_float_1(parser_t *parser)
229 if (!parser->imm_float_one)
230 parser->imm_float_one = parser_const_float(parser, 1);
231 return parser->imm_float_one;
234 static char *parser_strdup(const char *str)
237 /* actually dup empty strings */
238 char *out = (char*)mem_a(1);
242 return util_strdup(str);
245 static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
249 for (i = 0; i < vec_size(parser->imm_string); ++i) {
250 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
251 return parser->imm_string[i];
255 snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
256 out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
258 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
260 out->hasvalue = true;
261 out->constval.vstring = parser_strdup(str);
262 vec_push(parser->imm_string, out);
266 static ast_value* parser_const_vector(parser_t *parser, vector v)
270 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
271 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
272 return parser->imm_vector[i];
274 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
276 out->hasvalue = true;
277 out->constval.vvec = v;
278 vec_push(parser->imm_vector, out);
282 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
288 return parser_const_vector(parser, v);
291 static ast_value* parser_const_vector_0(parser_t *parser)
293 if (!parser->imm_vector_zero)
294 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
295 return parser->imm_vector_zero;
298 static ast_expression* parser_find_field(parser_t *parser, const char *name)
300 return ( ast_expression*)util_htget(parser->htfields, name);
303 static ast_expression* parser_find_label(parser_t *parser, const char *name)
306 for(i = 0; i < vec_size(parser->labels); i++)
307 if (!strcmp(parser->labels[i]->name, name))
308 return (ast_expression*)parser->labels[i];
312 static ast_expression* parser_find_global(parser_t *parser, const char *name)
314 return (ast_expression*)util_htget(parser->htglobals, name);
317 static ast_expression* parser_find_param(parser_t *parser, const char *name)
321 if (!parser->function)
323 fun = parser->function->vtype;
324 for (i = 0; i < vec_size(fun->expression.params); ++i) {
325 if (!strcmp(fun->expression.params[i]->name, name))
326 return (ast_expression*)(fun->expression.params[i]);
331 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
336 hash = util_hthash(parser->htglobals, name);
339 for (i = vec_size(parser->variables); i > upto;) {
341 if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
345 return parser_find_param(parser, name);
348 static ast_expression* parser_find_var(parser_t *parser, const char *name)
352 v = parser_find_local(parser, name, 0, &dummy);
353 if (!v) v = parser_find_global(parser, name);
357 static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
361 hash = util_hthash(parser->typedefs[0], name);
363 for (i = vec_size(parser->typedefs); i > upto;) {
365 if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
373 size_t etype; /* 0 = expression, others are operators */
377 ast_block *block; /* for commas and function calls */
386 #define SY_PAREN_EXPR '('
387 #define SY_PAREN_FUNC 'f'
388 #define SY_PAREN_INDEX '['
389 #define SY_PAREN_TERNARY '?'
391 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
402 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
406 e.out = (ast_expression*)v;
413 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
415 e.etype = 1 + (op - operators);
424 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
436 # define DEBUGSHUNTDO(x) x
438 # define DEBUGSHUNTDO(x)
441 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
442 * so we need to rotate it to become ent.(foo[n]).
444 static bool rotate_entfield_array_index_nodes(ast_expression **out)
446 ast_array_index *index;
447 ast_entfield *entfield;
451 ast_expression *entity;
453 lex_ctx ctx = ast_ctx(*out);
455 if (!ast_istype(*out, ast_array_index))
457 index = (ast_array_index*)*out;
459 if (!ast_istype(index->array, ast_entfield))
461 entfield = (ast_entfield*)index->array;
463 if (!ast_istype(entfield->field, ast_value))
465 field = (ast_value*)entfield->field;
468 entity = entfield->entity;
472 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
473 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
474 *out = (ast_expression*)entfield;
479 static bool immediate_is_true(lex_ctx ctx, ast_value *v)
481 switch (v->expression.vtype) {
483 return !!v->constval.vfloat;
485 return !!v->constval.vint;
487 if (OPTS_FLAG(CORRECT_LOGIC))
488 return v->constval.vvec.x &&
489 v->constval.vvec.y &&
492 return !!(v->constval.vvec.x);
494 if (!v->constval.vstring)
496 if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
498 return !!v->constval.vstring[0];
500 compile_error(ctx, "internal error: immediate_is_true on invalid type");
501 return !!v->constval.vfunc;
505 static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
509 ast_expression *out = NULL;
510 ast_expression *exprs[3];
511 ast_block *blocks[3];
512 ast_value *asvalue[3];
513 ast_binstore *asbinstore;
514 size_t i, assignop, addop, subop;
515 qcint generated_op = 0;
520 if (!vec_size(sy->ops)) {
521 parseerror(parser, "internal error: missing operator");
525 if (vec_last(sy->ops).paren) {
526 parseerror(parser, "unmatched parenthesis");
530 op = &operators[vec_last(sy->ops).etype - 1];
531 ctx = vec_last(sy->ops).ctx;
533 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
535 if (vec_size(sy->out) < op->operands) {
536 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
537 op->op, (int)op->id);
541 vec_shrinkby(sy->ops, 1);
543 /* op(:?) has no input and no output */
547 vec_shrinkby(sy->out, op->operands);
548 for (i = 0; i < op->operands; ++i) {
549 exprs[i] = sy->out[vec_size(sy->out)+i].out;
550 blocks[i] = sy->out[vec_size(sy->out)+i].block;
551 asvalue[i] = (ast_value*)exprs[i];
553 if (exprs[i]->expression.vtype == TYPE_NOEXPR &&
554 !(i != 0 && op->id == opid2('?',':')))
556 if (ast_istype(exprs[i], ast_label))
557 compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
559 compile_error(ast_ctx(exprs[i]), "not an expression");
560 (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
564 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
565 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
569 #define NotSameType(T) \
570 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
571 exprs[0]->expression.vtype != T)
572 #define CanConstFold1(A) \
573 (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
574 (A)->expression.vtype != TYPE_FUNCTION)
575 #define CanConstFold(A, B) \
576 (CanConstFold1(A) && CanConstFold1(B))
577 #define ConstV(i) (asvalue[(i)]->constval.vvec)
578 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
579 #define ConstS(i) (asvalue[(i)]->constval.vstring)
583 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
587 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
588 if (exprs[1]->expression.vtype != TYPE_FIELD) {
589 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
592 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
594 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
595 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
599 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
605 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
606 !(exprs[0]->expression.vtype == TYPE_FIELD &&
607 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
609 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
610 parseerror(parser, "cannot index value of type %s", ty1);
613 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
614 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
615 parseerror(parser, "index must be of type float, not %s", ty1);
618 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
619 if (rotate_entfield_array_index_nodes(&out))
622 /* This is not broken in fteqcc anymore */
623 if (opts.standard != COMPILER_GMQCC) {
624 /* this error doesn't need to make us bail out */
625 (void)!parsewarning(parser, WARN_EXTENSIONS,
626 "accessing array-field members of an entity without parenthesis\n"
627 " -> this is an extension from -std=gmqcc");
635 if (!ast_block_add_expr(blocks[0], exprs[1]))
638 blocks[0] = ast_block_new(ctx);
639 if (!ast_block_add_expr(blocks[0], exprs[0]) ||
640 !ast_block_add_expr(blocks[0], exprs[1]))
645 if (!ast_block_set_type(blocks[0], exprs[1]))
648 vec_push(sy->out, syblock(ctx, blocks[0]));
655 switch (exprs[0]->expression.vtype) {
657 if (CanConstFold1(exprs[0]))
658 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
660 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
661 (ast_expression*)parser_const_float_0(parser),
665 if (CanConstFold1(exprs[0]))
666 out = (ast_expression*)parser_const_vector_f(parser,
667 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
669 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
670 (ast_expression*)parser_const_vector_0(parser),
674 parseerror(parser, "invalid types used in expression: cannot negate type %s",
675 type_name[exprs[0]->expression.vtype]);
681 switch (exprs[0]->expression.vtype) {
683 if (CanConstFold1(exprs[0]))
684 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
686 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
689 if (CanConstFold1(exprs[0]))
690 out = (ast_expression*)parser_const_float(parser,
691 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
693 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
696 if (CanConstFold1(exprs[0])) {
697 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
698 out = (ast_expression*)parser_const_float(parser, !ConstS(0));
700 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
702 if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
703 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
705 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
708 /* we don't constant-fold NOT for these types */
710 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
713 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
716 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
717 type_name[exprs[0]->expression.vtype]);
723 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
724 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
726 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
727 type_name[exprs[0]->expression.vtype],
728 type_name[exprs[1]->expression.vtype]);
731 switch (exprs[0]->expression.vtype) {
733 if (CanConstFold(exprs[0], exprs[1]))
735 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
738 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
741 if (CanConstFold(exprs[0], exprs[1]))
742 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
744 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
747 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
748 type_name[exprs[0]->expression.vtype],
749 type_name[exprs[1]->expression.vtype]);
754 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
755 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
757 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
758 type_name[exprs[1]->expression.vtype],
759 type_name[exprs[0]->expression.vtype]);
762 switch (exprs[0]->expression.vtype) {
764 if (CanConstFold(exprs[0], exprs[1]))
765 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
767 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
770 if (CanConstFold(exprs[0], exprs[1]))
771 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
773 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
776 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
777 type_name[exprs[1]->expression.vtype],
778 type_name[exprs[0]->expression.vtype]);
783 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
784 !(exprs[0]->expression.vtype == TYPE_VECTOR &&
785 exprs[1]->expression.vtype == TYPE_FLOAT) &&
786 !(exprs[1]->expression.vtype == TYPE_VECTOR &&
787 exprs[0]->expression.vtype == TYPE_FLOAT)
790 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
791 type_name[exprs[1]->expression.vtype],
792 type_name[exprs[0]->expression.vtype]);
795 switch (exprs[0]->expression.vtype) {
797 if (exprs[1]->expression.vtype == TYPE_VECTOR)
799 if (CanConstFold(exprs[0], exprs[1]))
800 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
802 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
806 if (CanConstFold(exprs[0], exprs[1]))
807 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
809 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
813 if (exprs[1]->expression.vtype == TYPE_FLOAT)
815 if (CanConstFold(exprs[0], exprs[1]))
816 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
818 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
822 if (CanConstFold(exprs[0], exprs[1]))
823 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
824 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[0])) {
825 vector vec = ConstV(0);
826 if (!vec.y && !vec.z) { /* 'n 0 0' * v */
827 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
828 out = (ast_expression*)ast_member_new(ctx, exprs[1], 0, NULL);
829 out->expression.node.keep = false;
830 ((ast_member*)out)->rvalue = true;
832 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.x), out);
834 else if (!vec.x && !vec.z) { /* '0 n 0' * v */
835 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
836 out = (ast_expression*)ast_member_new(ctx, exprs[1], 1, NULL);
837 out->expression.node.keep = false;
838 ((ast_member*)out)->rvalue = true;
840 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.y), out);
842 else if (!vec.x && !vec.y) { /* '0 n 0' * v */
843 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
844 out = (ast_expression*)ast_member_new(ctx, exprs[1], 2, NULL);
845 out->expression.node.keep = false;
846 ((ast_member*)out)->rvalue = true;
848 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.z), out);
851 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
853 else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[1])) {
854 vector vec = ConstV(1);
855 if (!vec.y && !vec.z) { /* v * 'n 0 0' */
856 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
857 out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
858 out->expression.node.keep = false;
859 ((ast_member*)out)->rvalue = true;
861 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.x));
863 else if (!vec.x && !vec.z) { /* v * '0 n 0' */
864 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
865 out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
866 out->expression.node.keep = false;
867 ((ast_member*)out)->rvalue = true;
869 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.y));
871 else if (!vec.x && !vec.y) { /* v * '0 n 0' */
872 ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
873 out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
874 out->expression.node.keep = false;
875 ((ast_member*)out)->rvalue = true;
877 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.z));
880 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
883 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
887 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
888 type_name[exprs[1]->expression.vtype],
889 type_name[exprs[0]->expression.vtype]);
894 if (NotSameType(TYPE_FLOAT)) {
895 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
896 type_name[exprs[0]->expression.vtype],
897 type_name[exprs[1]->expression.vtype]);
900 if (CanConstFold(exprs[0], exprs[1]))
901 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
903 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
907 parseerror(parser, "qc does not have a modulo operator");
911 if (NotSameType(TYPE_FLOAT)) {
912 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
913 type_name[exprs[0]->expression.vtype],
914 type_name[exprs[1]->expression.vtype]);
917 if (CanConstFold(exprs[0], exprs[1]))
918 out = (ast_expression*)parser_const_float(parser,
919 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
920 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
922 out = (ast_expression*)ast_binary_new(ctx,
923 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
927 parseerror(parser, "TODO: bitxor");
932 case opid3('<','<','='):
933 case opid3('>','>','='):
934 parseerror(parser, "TODO: shifts");
938 generated_op += 1; /* INSTR_OR */
940 generated_op += INSTR_AND;
942 if (NotSameType(TYPE_FLOAT)) {
943 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
944 type_name[exprs[0]->expression.vtype],
945 type_name[exprs[1]->expression.vtype]);
946 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
947 parseerror(parser, "TODO: optional early out");
951 if (CanConstFold(exprs[0], exprs[1]))
953 if (OPTS_FLAG(PERL_LOGIC)) {
954 if (immediate_is_true(ctx, asvalue[0]))
958 out = (ast_expression*)parser_const_float(parser,
959 ( (generated_op == INSTR_OR)
960 ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
961 : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
966 if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
967 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
968 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
969 parseerror(parser, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
972 for (i = 0; i < 2; ++i) {
973 if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->expression.vtype == TYPE_VECTOR) {
974 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
976 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
978 exprs[i] = out; out = NULL;
979 if (OPTS_FLAG(PERL_LOGIC)) {
980 /* here we want to keep the right expressions' type */
984 else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->expression.vtype == TYPE_STRING) {
985 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
987 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
989 exprs[i] = out; out = NULL;
990 if (OPTS_FLAG(PERL_LOGIC)) {
991 /* here we want to keep the right expressions' type */
996 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1000 case opid2('?',':'):
1001 if (vec_last(parser->pot) != POT_TERNARY2) {
1002 parseerror(parser, "mismatched parenthesis/ternary");
1005 vec_pop(parser->pot);
1006 if (!ast_compare_type(exprs[1], exprs[2])) {
1007 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
1008 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
1009 parseerror(parser, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
1012 if (CanConstFold1(exprs[0]))
1013 out = (immediate_is_true(ctx, asvalue[0]) ? exprs[1] : exprs[2]);
1015 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
1019 generated_op += 1; /* INSTR_GT */
1021 generated_op += 1; /* INSTR_LT */
1022 case opid2('>', '='):
1023 generated_op += 1; /* INSTR_GE */
1024 case opid2('<', '='):
1025 generated_op += INSTR_LE;
1026 if (NotSameType(TYPE_FLOAT)) {
1027 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1028 type_name[exprs[0]->expression.vtype],
1029 type_name[exprs[1]->expression.vtype]);
1032 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
1034 case opid2('!', '='):
1035 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1036 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1037 type_name[exprs[0]->expression.vtype],
1038 type_name[exprs[1]->expression.vtype]);
1041 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1043 case opid2('=', '='):
1044 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
1045 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
1046 type_name[exprs[0]->expression.vtype],
1047 type_name[exprs[1]->expression.vtype]);
1050 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
1054 if (ast_istype(exprs[0], ast_entfield)) {
1055 ast_expression *field = ((ast_entfield*)exprs[0])->field;
1056 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1057 exprs[0]->expression.vtype == TYPE_FIELD &&
1058 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1060 assignop = type_storep_instr[TYPE_VECTOR];
1063 assignop = type_storep_instr[exprs[0]->expression.vtype];
1064 if (assignop == AINSTR_END || !ast_compare_type(field->expression.next, exprs[1]))
1066 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
1067 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1068 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1069 field->expression.next->expression.vtype == TYPE_FUNCTION &&
1070 exprs[1]->expression.vtype == TYPE_FUNCTION)
1072 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1073 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1076 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1081 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
1082 exprs[0]->expression.vtype == TYPE_FIELD &&
1083 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
1085 assignop = type_store_instr[TYPE_VECTOR];
1088 assignop = type_store_instr[exprs[0]->expression.vtype];
1091 if (assignop == AINSTR_END) {
1092 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1093 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1094 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1096 else if (!ast_compare_type(exprs[0], exprs[1]))
1098 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1099 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1100 if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
1101 exprs[0]->expression.vtype == TYPE_FUNCTION &&
1102 exprs[1]->expression.vtype == TYPE_FUNCTION)
1104 (void)!parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
1105 "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1108 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
1111 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1112 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1114 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
1116 case opid3('+','+','P'):
1117 case opid3('-','-','P'):
1119 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1120 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1121 parseerror(parser, "invalid type for prefix increment: %s", ty1);
1124 if (op->id == opid3('+','+','P'))
1125 addop = INSTR_ADD_F;
1127 addop = INSTR_SUB_F;
1128 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1129 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1131 if (ast_istype(exprs[0], ast_entfield)) {
1132 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1134 (ast_expression*)parser_const_float_1(parser));
1136 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1138 (ast_expression*)parser_const_float_1(parser));
1141 case opid3('S','+','+'):
1142 case opid3('S','-','-'):
1144 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
1145 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1146 parseerror(parser, "invalid type for suffix increment: %s", ty1);
1149 if (op->id == opid3('S','+','+')) {
1150 addop = INSTR_ADD_F;
1151 subop = INSTR_SUB_F;
1153 addop = INSTR_SUB_F;
1154 subop = INSTR_ADD_F;
1156 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1157 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1159 if (ast_istype(exprs[0], ast_entfield)) {
1160 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
1162 (ast_expression*)parser_const_float_1(parser));
1164 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
1166 (ast_expression*)parser_const_float_1(parser));
1170 out = (ast_expression*)ast_binary_new(ctx, subop,
1172 (ast_expression*)parser_const_float_1(parser));
1174 case opid2('+','='):
1175 case opid2('-','='):
1176 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
1177 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
1179 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1180 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1181 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1185 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1186 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1188 if (ast_istype(exprs[0], ast_entfield))
1189 assignop = type_storep_instr[exprs[0]->expression.vtype];
1191 assignop = type_store_instr[exprs[0]->expression.vtype];
1192 switch (exprs[0]->expression.vtype) {
1194 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1195 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
1196 exprs[0], exprs[1]);
1199 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1200 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
1201 exprs[0], exprs[1]);
1204 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1205 type_name[exprs[0]->expression.vtype],
1206 type_name[exprs[1]->expression.vtype]);
1210 case opid2('*','='):
1211 case opid2('/','='):
1212 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
1213 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
1214 exprs[0]->expression.vtype == TYPE_VECTOR))
1216 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1217 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1218 parseerror(parser, "invalid types used in expression: %s and %s",
1222 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1223 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1225 if (ast_istype(exprs[0], ast_entfield))
1226 assignop = type_storep_instr[exprs[0]->expression.vtype];
1228 assignop = type_store_instr[exprs[0]->expression.vtype];
1229 switch (exprs[0]->expression.vtype) {
1231 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1232 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
1233 exprs[0], exprs[1]);
1236 if (op->id == opid2('*','=')) {
1237 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1238 exprs[0], exprs[1]);
1240 /* there's no DIV_VF */
1241 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1242 (ast_expression*)parser_const_float_1(parser),
1246 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1251 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1252 type_name[exprs[0]->expression.vtype],
1253 type_name[exprs[1]->expression.vtype]);
1257 case opid2('&','='):
1258 case opid2('|','='):
1259 if (NotSameType(TYPE_FLOAT)) {
1260 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1261 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1262 parseerror(parser, "invalid types used in expression: %s and %s",
1266 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1267 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1269 if (ast_istype(exprs[0], ast_entfield))
1270 assignop = type_storep_instr[exprs[0]->expression.vtype];
1272 assignop = type_store_instr[exprs[0]->expression.vtype];
1273 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1274 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1275 exprs[0], exprs[1]);
1277 case opid3('&','~','='):
1278 /* This is like: a &= ~(b);
1279 * But QC has no bitwise-not, so we implement it as
1282 if (NotSameType(TYPE_FLOAT)) {
1283 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1284 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1285 parseerror(parser, "invalid types used in expression: %s and %s",
1289 if (ast_istype(exprs[0], ast_entfield))
1290 assignop = type_storep_instr[exprs[0]->expression.vtype];
1292 assignop = type_store_instr[exprs[0]->expression.vtype];
1293 out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
1296 if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
1297 parseerror(parser, "assignment to constant `%s`", asvalue[0]->name);
1299 asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
1300 asbinstore->keep_dest = true;
1301 out = (ast_expression*)asbinstore;
1307 parseerror(parser, "failed to apply operand %s", op->op);
1311 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1312 vec_push(sy->out, syexp(ctx, out));
1316 static bool parser_close_call(parser_t *parser, shunt *sy)
1318 /* was a function call */
1319 ast_expression *fun;
1325 vec_shrinkby(sy->ops, 1);
1326 fid = sy->ops[vec_size(sy->ops)].off;
1328 /* out[fid] is the function
1329 * everything above is parameters...
1330 * 0 params = nothing
1331 * 1 params = ast_expression
1335 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1336 parseerror(parser, "internal error: function call needs function and parameter list...");
1340 fun = sy->out[fid].out;
1342 if (fun == intrinsic_debug_typestring) {
1344 if (fid+2 != vec_size(sy->out) ||
1345 vec_last(sy->out).block)
1347 parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
1350 ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
1351 ast_unref(vec_last(sy->out).out);
1352 sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
1353 (ast_expression*)parser_const_string(parser, ty, false));
1354 vec_shrinkby(sy->out, 1);
1358 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1360 parseerror(parser, "internal error: failed to create ast_call node");
1364 if (fid+1 == vec_size(sy->out)) {
1367 } else if (fid+2 == vec_size(sy->out)) {
1369 vec_shrinkby(sy->out, 1);
1370 params = sy->out[vec_size(sy->out)].block;
1374 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1376 paramcount = vec_size(params->exprs);
1377 call->params = params->exprs;
1378 params->exprs = NULL;
1381 (void)!ast_call_check_types(call);
1383 parseerror(parser, "invalid function call");
1387 /* overwrite fid, the function, with a call */
1388 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1390 if (fun->expression.vtype != TYPE_FUNCTION) {
1391 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1395 if (!fun->expression.next) {
1396 parseerror(parser, "could not determine function return type");
1399 ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1401 if (fun->expression.flags & AST_FLAG_DEPRECATED) {
1403 return !parsewarning(parser, WARN_DEPRECATED,
1404 "call to function (which is marked deprecated)\n",
1405 "-> it has been declared here: %s:%i",
1406 ast_ctx(fun).file, ast_ctx(fun).line);
1409 return !parsewarning(parser, WARN_DEPRECATED,
1410 "call to `%s` (which is marked deprecated)\n"
1411 "-> `%s` declared here: %s:%i",
1412 fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
1414 return !parsewarning(parser, WARN_DEPRECATED,
1415 "call to `%s` (deprecated: %s)\n"
1416 "-> `%s` declared here: %s:%i",
1417 fval->name, fval->desc, fval->name, ast_ctx(fun).file,
1421 if (vec_size(fun->expression.params) != paramcount &&
1422 !((fun->expression.flags & AST_FLAG_VARIADIC) &&
1423 vec_size(fun->expression.params) < paramcount))
1425 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1427 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1428 "too %s parameters for call to %s: expected %i, got %i\n"
1429 " -> `%s` has been declared here: %s:%i",
1430 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1431 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1433 return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
1434 "too %s parameters for function call: expected %i, got %i\n"
1435 " -> it has been declared here: %s:%i",
1436 fewmany, (int)vec_size(fun->expression.params), (int)paramcount,
1437 ast_ctx(fun).file, (int)ast_ctx(fun).line);
1444 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1446 if (!vec_size(sy->ops)) {
1447 parseerror(parser, "unmatched closing paren");
1450 /* this would for bit a + (x) because there are no operators inside (x)
1451 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1452 parseerror(parser, "empty parenthesis expression");
1456 while (vec_size(sy->ops)) {
1457 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1458 if (!parser_close_call(parser, sy))
1462 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1463 vec_shrinkby(sy->ops, 1);
1464 return !functions_only;
1466 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1469 /* pop off the parenthesis */
1470 vec_shrinkby(sy->ops, 1);
1471 /* then apply the index operator */
1472 if (!parser_sy_apply_operator(parser, sy))
1476 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_TERNARY) {
1479 if (vec_last(parser->pot) != POT_TERNARY1) {
1480 parseerror(parser, "mismatched colon in ternary expression (missing closing paren?)");
1483 vec_last(parser->pot) = POT_TERNARY2;
1484 /* pop off the parenthesis */
1485 vec_shrinkby(sy->ops, 1);
1488 if (!parser_sy_apply_operator(parser, sy))
1494 static void parser_reclassify_token(parser_t *parser)
1497 for (i = 0; i < operator_count; ++i) {
1498 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1499 parser->tok = TOKEN_OPERATOR;
1505 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
1507 ast_expression *expr = NULL;
1509 bool wantop = false;
1510 bool gotmemberof = false;
1511 /* only warn once about an assignment in a truth value because the current code
1512 * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
1514 bool warn_truthvalue = true;
1516 /* count the parens because an if starts with one, so the
1517 * end of a condition is an unmatched closing paren
1525 parser->lex->flags.noops = false;
1527 parser_reclassify_token(parser);
1532 gotmemberof = false;
1534 parser->memberof = 0;
1536 if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
1537 parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "_"))
1539 /* a translatable string */
1543 parseerror(parser, "expected operator or end of statement, got constant");
1547 parser->lex->flags.noops = true;
1548 if (!parser_next(parser) || parser->tok != '(') {
1549 parseerror(parser, "use _(\"string\") to create a translatable string constant");
1552 parser->lex->flags.noops = false;
1553 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
1554 parseerror(parser, "expected a constant string in translatable-string extension");
1557 val = parser_const_string(parser, parser_tokval(parser), true);
1561 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1562 DEBUGSHUNTDO(con_out("push string\n"));
1564 if (!parser_next(parser) || parser->tok != ')') {
1565 parseerror(parser, "expected closing paren after translatable string");
1569 else if (parser->tok == TOKEN_IDENT)
1571 ast_expression *var;
1573 parseerror(parser, "expected operator or end of statement");
1578 if (opts.standard == COMPILER_GMQCC)
1580 if (parser->memberof == TYPE_ENTITY) {
1581 /* still get vars first since there could be a fieldpointer */
1582 var = parser_find_var(parser, parser_tokval(parser));
1584 var = parser_find_field(parser, parser_tokval(parser));
1586 else if (parser->memberof == TYPE_VECTOR)
1588 parseerror(parser, "TODO: implement effective vector member access");
1591 else if (parser->memberof) {
1592 parseerror(parser, "namespace for member not found");
1596 var = parser_find_var(parser, parser_tokval(parser));
1598 var = parser_find_var(parser, parser_tokval(parser));
1600 var = parser_find_field(parser, parser_tokval(parser));
1602 if (!var && with_labels) {
1603 var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
1605 ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
1606 var = (ast_expression*)lbl;
1607 vec_push(parser->labels, lbl);
1612 if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
1613 var = (ast_expression*)intrinsic_debug_typestring;
1617 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1623 if (ast_istype(var, ast_value)) {
1624 ((ast_value*)var)->uses++;
1626 else if (ast_istype(var, ast_member)) {
1627 ast_member *mem = (ast_member*)var;
1628 if (ast_istype(mem->owner, ast_value))
1629 ((ast_value*)(mem->owner))->uses++;
1632 vec_push(sy.out, syexp(parser_ctx(parser), var));
1633 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1635 else if (parser->tok == TOKEN_FLOATCONST) {
1638 parseerror(parser, "expected operator or end of statement, got constant");
1642 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1645 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1646 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1648 else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
1651 parseerror(parser, "expected operator or end of statement, got constant");
1655 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1658 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1659 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1661 else if (parser->tok == TOKEN_STRINGCONST) {
1664 parseerror(parser, "expected operator or end of statement, got constant");
1668 val = parser_const_string(parser, parser_tokval(parser), false);
1671 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1672 DEBUGSHUNTDO(con_out("push string\n"));
1674 else if (parser->tok == TOKEN_VECTORCONST) {
1677 parseerror(parser, "expected operator or end of statement, got constant");
1681 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1684 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1685 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1686 parser_token(parser)->constval.v.x,
1687 parser_token(parser)->constval.v.y,
1688 parser_token(parser)->constval.v.z));
1690 else if (parser->tok == '(') {
1691 parseerror(parser, "internal error: '(' should be classified as operator");
1694 else if (parser->tok == '[') {
1695 parseerror(parser, "internal error: '[' should be classified as operator");
1698 else if (parser->tok == ')') {
1700 DEBUGSHUNTDO(con_out("do[op] )\n"));
1704 /* we do expect an operator next */
1705 /* closing an opening paren */
1706 if (!parser_close_paren(parser, &sy, false))
1708 if (vec_last(parser->pot) != POT_PAREN) {
1709 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1712 vec_pop(parser->pot);
1714 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1718 /* allowed for function calls */
1719 if (!parser_close_paren(parser, &sy, true))
1721 if (vec_last(parser->pot) != POT_PAREN) {
1722 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1725 vec_pop(parser->pot);
1729 else if (parser->tok == ']') {
1731 parseerror(parser, "operand expected");
1735 if (!parser_close_paren(parser, &sy, false))
1737 if (vec_last(parser->pot) != POT_PAREN) {
1738 parseerror(parser, "mismatched parentheses (closing paren during ternary expression?)");
1741 vec_pop(parser->pot);
1744 else if (parser->tok == TOKEN_TYPENAME) {
1745 parseerror(parser, "unexpected typename");
1748 else if (parser->tok != TOKEN_OPERATOR) {
1750 parseerror(parser, "expected operator or end of statement");
1757 /* classify the operator */
1758 const oper_info *op;
1759 const oper_info *olast = NULL;
1761 for (o = 0; o < operator_count; ++o) {
1762 if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
1763 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1764 !strcmp(parser_tokval(parser), operators[o].op))
1769 if (o == operator_count) {
1770 /* no operator found... must be the end of the statement */
1773 /* found an operator */
1776 /* when declaring variables, a comma starts a new variable */
1777 if (op->id == opid1(',') && !parens && stopatcomma) {
1778 /* fixup the token */
1783 /* a colon without a pervious question mark cannot be a ternary */
1784 if (!ternaries && op->id == opid2(':','?')) {
1789 if (op->id == opid1(',')) {
1790 if (vec_size(parser->pot) && vec_last(parser->pot) == POT_TERNARY2) {
1791 (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
1795 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1796 olast = &operators[vec_last(sy.ops).etype-1];
1798 #define IsAssignOp(x) (\
1799 (x) == opid1('=') || \
1800 (x) == opid2('+','=') || \
1801 (x) == opid2('-','=') || \
1802 (x) == opid2('*','=') || \
1803 (x) == opid2('/','=') || \
1804 (x) == opid2('%','=') || \
1805 (x) == opid2('&','=') || \
1806 (x) == opid2('|','=') || \
1807 (x) == opid3('&','~','=') \
1809 if (warn_truthvalue) {
1810 if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
1811 (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
1812 (truthvalue && !vec_size(parser->pot) && IsAssignOp(op->id))
1815 (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
1816 warn_truthvalue = false;
1821 (op->prec < olast->prec) ||
1822 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1824 if (!parser_sy_apply_operator(parser, &sy))
1826 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1827 olast = &operators[vec_last(sy.ops).etype-1];
1832 if (op->id == opid1('.') && opts.standard == COMPILER_GMQCC) {
1833 /* for gmqcc standard: open up the namespace of the previous type */
1834 ast_expression *prevex = vec_last(sy.out).out;
1836 parseerror(parser, "unexpected member operator");
1839 if (prevex->expression.vtype == TYPE_ENTITY)
1840 parser->memberof = TYPE_ENTITY;
1841 else if (prevex->expression.vtype == TYPE_VECTOR)
1842 parser->memberof = TYPE_VECTOR;
1844 parseerror(parser, "type error: type has no members");
1850 if (op->id == opid1('(')) {
1852 size_t sycount = vec_size(sy.out);
1853 DEBUGSHUNTDO(con_out("push [op] (\n"));
1854 ++parens; vec_push(parser->pot, POT_PAREN);
1855 /* we expected an operator, this is the function-call operator */
1856 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1858 ++parens; vec_push(parser->pot, POT_PAREN);
1859 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1860 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1863 } else if (op->id == opid1('[')) {
1865 parseerror(parser, "unexpected array subscript");
1868 ++parens; vec_push(parser->pot, POT_PAREN);
1869 /* push both the operator and the paren, this makes life easier */
1870 vec_push(sy.ops, syop(parser_ctx(parser), op));
1871 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1873 } else if (op->id == opid2('?',':')) {
1874 vec_push(sy.ops, syop(parser_ctx(parser), op));
1875 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_TERNARY, 0));
1878 vec_push(parser->pot, POT_TERNARY1);
1879 } else if (op->id == opid2(':','?')) {
1880 if (!vec_size(parser->pot)) {
1881 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1884 if (vec_last(parser->pot) != POT_TERNARY1) {
1885 parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
1888 if (!parser_close_paren(parser, &sy, false))
1890 vec_push(sy.ops, syop(parser_ctx(parser), op));
1894 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1895 vec_push(sy.ops, syop(parser_ctx(parser), op));
1896 wantop = !!(op->flags & OP_SUFFIX);
1899 if (!parser_next(parser)) {
1902 if (parser->tok == ';' ||
1903 (!parens && parser->tok == ']'))
1909 while (vec_size(sy.ops)) {
1910 if (!parser_sy_apply_operator(parser, &sy))
1914 parser->lex->flags.noops = true;
1915 if (!vec_size(sy.out)) {
1916 parseerror(parser, "empty expression");
1919 expr = sy.out[0].out;
1922 DEBUGSHUNTDO(con_out("shunt done\n"));
1923 if (vec_size(parser->pot)) {
1924 parseerror(parser, "internal error: vec_size(parser->pot) = %lu", (unsigned long)vec_size(parser->pot));
1927 vec_free(parser->pot);
1931 parser->lex->flags.noops = true;
1937 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
1939 ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
1942 if (!parser_next(parser)) {
1949 static void parser_enterblock(parser_t *parser)
1951 vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
1952 vec_push(parser->_blocklocals, vec_size(parser->_locals));
1953 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
1954 vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
1955 vec_push(parser->_block_ctx, parser_ctx(parser));
1958 static bool parser_leaveblock(parser_t *parser)
1961 size_t locals, typedefs;
1963 if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
1964 parseerror(parser, "internal error: parser_leaveblock with no block");
1968 util_htdel(vec_last(parser->variables));
1969 vec_pop(parser->variables);
1970 if (!vec_size(parser->_blocklocals)) {
1971 parseerror(parser, "internal error: parser_leaveblock with no block (2)");
1975 locals = vec_last(parser->_blocklocals);
1976 vec_pop(parser->_blocklocals);
1977 while (vec_size(parser->_locals) != locals) {
1978 ast_expression *e = vec_last(parser->_locals);
1979 ast_value *v = (ast_value*)e;
1980 vec_pop(parser->_locals);
1981 if (ast_istype(e, ast_value) && !v->uses) {
1982 if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
1987 typedefs = vec_last(parser->_blocktypedefs);
1988 while (vec_size(parser->_typedefs) != typedefs) {
1989 ast_delete(vec_last(parser->_typedefs));
1990 vec_pop(parser->_typedefs);
1992 util_htdel(vec_last(parser->typedefs));
1993 vec_pop(parser->typedefs);
1995 vec_pop(parser->_block_ctx);
1999 static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
2001 vec_push(parser->_locals, e);
2002 util_htset(vec_last(parser->variables), name, (void*)e);
2005 static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
2009 ast_expression *prev;
2011 if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->expression.vtype == TYPE_STRING)
2014 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
2017 parseerror(parser, "internal error: failed to process condition");
2022 else if (OPTS_FLAG(CORRECT_LOGIC) && cond->expression.vtype == TYPE_VECTOR)
2024 /* vector types need to be cast to true booleans */
2025 ast_binary *bin = (ast_binary*)cond;
2026 if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
2028 /* in perl-logic, AND and OR take care of the -fcorrect-logic */
2030 cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
2033 parseerror(parser, "internal error: failed to process condition");
2040 unary = (ast_unary*)cond;
2041 while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
2043 cond = unary->operand;
2044 unary->operand = NULL;
2047 unary = (ast_unary*)cond;
2051 parseerror(parser, "internal error: failed to process condition");
2053 if (ifnot) *_ifnot = !*_ifnot;
2057 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
2060 ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
2063 lex_ctx ctx = parser_ctx(parser);
2065 (void)block; /* not touching */
2067 /* skip the 'if', parse an optional 'not' and check for an opening paren */
2068 if (!parser_next(parser)) {
2069 parseerror(parser, "expected condition or 'not'");
2072 if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
2074 if (!parser_next(parser)) {
2075 parseerror(parser, "expected condition in parenthesis");
2079 if (parser->tok != '(') {
2080 parseerror(parser, "expected 'if' condition in parenthesis");
2083 /* parse into the expression */
2084 if (!parser_next(parser)) {
2085 parseerror(parser, "expected 'if' condition after opening paren");
2088 /* parse the condition */
2089 cond = parse_expression_leave(parser, false, true, false);
2093 if (parser->tok != ')') {
2094 parseerror(parser, "expected closing paren after 'if' condition");
2098 /* parse into the 'then' branch */
2099 if (!parser_next(parser)) {
2100 parseerror(parser, "expected statement for on-true branch of 'if'");
2104 if (!parse_statement_or_block(parser, &ontrue)) {
2108 /* check for an else */
2109 if (!strcmp(parser_tokval(parser), "else")) {
2110 /* parse into the 'else' branch */
2111 if (!parser_next(parser)) {
2112 parseerror(parser, "expected on-false branch after 'else'");
2117 if (!parse_statement_or_block(parser, &onfalse)) {
2124 cond = process_condition(parser, cond, &ifnot);
2126 if (ontrue) ast_delete(ontrue);
2127 if (onfalse) ast_delete(onfalse);
2132 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
2134 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
2135 *out = (ast_expression*)ifthen;
2139 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
2140 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
2145 /* skip the 'while' and get the body */
2146 if (!parser_next(parser)) {
2147 if (OPTS_FLAG(LOOP_LABELS))
2148 parseerror(parser, "expected loop label or 'while' condition in parenthesis");
2150 parseerror(parser, "expected 'while' condition in parenthesis");
2154 if (parser->tok == ':') {
2155 if (!OPTS_FLAG(LOOP_LABELS))
2156 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2157 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2158 parseerror(parser, "expected loop label");
2161 label = util_strdup(parser_tokval(parser));
2162 if (!parser_next(parser)) {
2164 parseerror(parser, "expected 'while' condition in parenthesis");
2169 if (parser->tok != '(') {
2170 parseerror(parser, "expected 'while' condition in parenthesis");
2174 vec_push(parser->breaks, label);
2175 vec_push(parser->continues, label);
2177 rv = parse_while_go(parser, block, out);
2180 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2181 parseerror(parser, "internal error: label stack corrupted");
2187 vec_pop(parser->breaks);
2188 vec_pop(parser->continues);
2193 static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
2196 ast_expression *cond, *ontrue;
2200 lex_ctx ctx = parser_ctx(parser);
2202 (void)block; /* not touching */
2204 /* parse into the expression */
2205 if (!parser_next(parser)) {
2206 parseerror(parser, "expected 'while' condition after opening paren");
2209 /* parse the condition */
2210 cond = parse_expression_leave(parser, false, true, false);
2214 if (parser->tok != ')') {
2215 parseerror(parser, "expected closing paren after 'while' condition");
2219 /* parse into the 'then' branch */
2220 if (!parser_next(parser)) {
2221 parseerror(parser, "expected while-loop body");
2225 if (!parse_statement_or_block(parser, &ontrue)) {
2230 cond = process_condition(parser, cond, &ifnot);
2235 aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
2236 *out = (ast_expression*)aloop;
2240 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
2241 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
2246 /* skip the 'do' and get the body */
2247 if (!parser_next(parser)) {
2248 if (OPTS_FLAG(LOOP_LABELS))
2249 parseerror(parser, "expected loop label or body");
2251 parseerror(parser, "expected loop body");
2255 if (parser->tok == ':') {
2256 if (!OPTS_FLAG(LOOP_LABELS))
2257 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2258 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2259 parseerror(parser, "expected loop label");
2262 label = util_strdup(parser_tokval(parser));
2263 if (!parser_next(parser)) {
2265 parseerror(parser, "expected loop body");
2270 vec_push(parser->breaks, label);
2271 vec_push(parser->continues, label);
2273 rv = parse_dowhile_go(parser, block, out);
2276 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2277 parseerror(parser, "internal error: label stack corrupted");
2283 vec_pop(parser->breaks);
2284 vec_pop(parser->continues);
2289 static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
2292 ast_expression *cond, *ontrue;
2296 lex_ctx ctx = parser_ctx(parser);
2298 (void)block; /* not touching */
2300 if (!parse_statement_or_block(parser, &ontrue))
2303 /* expect the "while" */
2304 if (parser->tok != TOKEN_KEYWORD ||
2305 strcmp(parser_tokval(parser), "while"))
2307 parseerror(parser, "expected 'while' and condition");
2312 /* skip the 'while' and check for opening paren */
2313 if (!parser_next(parser) || parser->tok != '(') {
2314 parseerror(parser, "expected 'while' condition in parenthesis");
2318 /* parse into the expression */
2319 if (!parser_next(parser)) {
2320 parseerror(parser, "expected 'while' condition after opening paren");
2324 /* parse the condition */
2325 cond = parse_expression_leave(parser, false, true, false);
2329 if (parser->tok != ')') {
2330 parseerror(parser, "expected closing paren after 'while' condition");
2336 if (!parser_next(parser) || parser->tok != ';') {
2337 parseerror(parser, "expected semicolon after condition");
2343 if (!parser_next(parser)) {
2344 parseerror(parser, "parse error");
2350 cond = process_condition(parser, cond, &ifnot);
2355 aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
2356 *out = (ast_expression*)aloop;
2360 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
2361 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
2366 /* skip the 'for' and check for opening paren */
2367 if (!parser_next(parser)) {
2368 if (OPTS_FLAG(LOOP_LABELS))
2369 parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
2371 parseerror(parser, "expected 'for' expressions in parenthesis");
2375 if (parser->tok == ':') {
2376 if (!OPTS_FLAG(LOOP_LABELS))
2377 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2378 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2379 parseerror(parser, "expected loop label");
2382 label = util_strdup(parser_tokval(parser));
2383 if (!parser_next(parser)) {
2385 parseerror(parser, "expected 'for' expressions in parenthesis");
2390 if (parser->tok != '(') {
2391 parseerror(parser, "expected 'for' expressions in parenthesis");
2395 vec_push(parser->breaks, label);
2396 vec_push(parser->continues, label);
2398 rv = parse_for_go(parser, block, out);
2401 if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
2402 parseerror(parser, "internal error: label stack corrupted");
2408 vec_pop(parser->breaks);
2409 vec_pop(parser->continues);
2413 static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
2416 ast_expression *initexpr, *cond, *increment, *ontrue;
2422 lex_ctx ctx = parser_ctx(parser);
2424 parser_enterblock(parser);
2431 /* parse into the expression */
2432 if (!parser_next(parser)) {
2433 parseerror(parser, "expected 'for' initializer after opening paren");
2438 if (parser->tok == TOKEN_IDENT)
2439 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2441 if (typevar || parser->tok == TOKEN_TYPENAME) {
2443 if (opts.standard != COMPILER_GMQCC) {
2444 if (parsewarning(parser, WARN_EXTENSIONS,
2445 "current standard does not allow variable declarations in for-loop initializers"))
2449 if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
2452 else if (parser->tok != ';')
2454 initexpr = parse_expression_leave(parser, false, false, false);
2459 /* move on to condition */
2460 if (parser->tok != ';') {
2461 parseerror(parser, "expected semicolon after for-loop initializer");
2464 if (!parser_next(parser)) {
2465 parseerror(parser, "expected for-loop condition");
2469 /* parse the condition */
2470 if (parser->tok != ';') {
2471 cond = parse_expression_leave(parser, false, true, false);
2476 /* move on to incrementor */
2477 if (parser->tok != ';') {
2478 parseerror(parser, "expected semicolon after for-loop initializer");
2481 if (!parser_next(parser)) {
2482 parseerror(parser, "expected for-loop condition");
2486 /* parse the incrementor */
2487 if (parser->tok != ')') {
2488 increment = parse_expression_leave(parser, false, false, false);
2491 if (!ast_side_effects(increment)) {
2492 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2498 if (parser->tok != ')') {
2499 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
2502 /* parse into the 'then' branch */
2503 if (!parser_next(parser)) {
2504 parseerror(parser, "expected for-loop body");
2507 if (!parse_statement_or_block(parser, &ontrue))
2511 cond = process_condition(parser, cond, &ifnot);
2515 aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
2516 *out = (ast_expression*)aloop;
2518 if (!parser_leaveblock(parser))
2522 if (initexpr) ast_delete(initexpr);
2523 if (cond) ast_delete(cond);
2524 if (increment) ast_delete(increment);
2525 (void)!parser_leaveblock(parser);
2529 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
2531 ast_expression *exp = NULL;
2532 ast_return *ret = NULL;
2533 ast_value *expected = parser->function->vtype;
2535 lex_ctx ctx = parser_ctx(parser);
2537 (void)block; /* not touching */
2539 if (!parser_next(parser)) {
2540 parseerror(parser, "expected return expression");
2544 if (parser->tok != ';') {
2545 exp = parse_expression(parser, false, false);
2549 if (exp->expression.vtype != TYPE_NIL &&
2550 exp->expression.vtype != expected->expression.next->expression.vtype)
2552 parseerror(parser, "return with invalid expression");
2555 ret = ast_return_new(ctx, exp);
2561 if (!parser_next(parser))
2562 parseerror(parser, "parse error");
2563 if (expected->expression.next->expression.vtype != TYPE_VOID) {
2564 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
2566 ret = ast_return_new(ctx, NULL);
2568 *out = (ast_expression*)ret;
2572 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
2575 unsigned int levels = 0;
2576 lex_ctx ctx = parser_ctx(parser);
2577 const char **loops = (is_continue ? parser->continues : parser->breaks);
2579 (void)block; /* not touching */
2580 if (!parser_next(parser)) {
2581 parseerror(parser, "expected semicolon or loop label");
2585 if (parser->tok == TOKEN_IDENT) {
2586 if (!OPTS_FLAG(LOOP_LABELS))
2587 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2588 i = vec_size(loops);
2590 if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
2593 parseerror(parser, "no such loop to %s: `%s`",
2594 (is_continue ? "continue" : "break out of"),
2595 parser_tokval(parser));
2600 if (!parser_next(parser)) {
2601 parseerror(parser, "expected semicolon");
2606 if (parser->tok != ';') {
2607 parseerror(parser, "expected semicolon");
2611 if (!parser_next(parser))
2612 parseerror(parser, "parse error");
2614 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
2618 /* returns true when it was a variable qualifier, false otherwise!
2619 * on error, cvq is set to CV_WRONG
2621 static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
2623 bool had_const = false;
2624 bool had_var = false;
2625 bool had_noref = false;
2626 bool had_attrib = false;
2627 bool had_static = false;
2632 if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
2634 /* parse an attribute */
2635 if (!parser_next(parser)) {
2636 parseerror(parser, "expected attribute after `[[`");
2640 if (!strcmp(parser_tokval(parser), "noreturn")) {
2641 flags |= AST_FLAG_NORETURN;
2642 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2643 parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
2648 else if (!strcmp(parser_tokval(parser), "noref")) {
2650 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2651 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2656 else if (!strcmp(parser_tokval(parser), "inline")) {
2657 flags |= AST_FLAG_INLINE;
2658 if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2659 parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
2666 else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
2667 flags |= AST_FLAG_DEPRECATED;
2670 if (!parser_next(parser)) {
2671 parseerror(parser, "parse error in attribute");
2675 if (parser->tok == '(') {
2676 if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
2677 parseerror(parser, "`deprecated` attribute missing parameter");
2681 *message = util_strdup(parser_tokval(parser));
2683 if (!parser_next(parser)) {
2684 parseerror(parser, "parse error in attribute");
2688 if(parser->tok != ')') {
2689 parseerror(parser, "`deprecated` attribute expected `)` after parameter");
2693 if (!parser_next(parser)) {
2694 parseerror(parser, "parse error in attribute");
2699 if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2700 parseerror(parser, "`deprecated` attribute expected `]]`");
2703 if (*message) mem_d(*message);
2711 /* Skip tokens until we hit a ]] */
2712 (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
2713 while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
2714 if (!parser_next(parser)) {
2715 parseerror(parser, "error inside attribute");
2722 else if (!strcmp(parser_tokval(parser), "static"))
2724 else if (!strcmp(parser_tokval(parser), "const"))
2726 else if (!strcmp(parser_tokval(parser), "var"))
2728 else if (with_local && !strcmp(parser_tokval(parser), "local"))
2730 else if (!strcmp(parser_tokval(parser), "noref"))
2732 else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
2737 if (!parser_next(parser))
2747 *is_static = had_static;
2751 parseerror(parser, "parse error after variable qualifier");
2756 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
2757 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
2762 /* skip the 'while' and get the body */
2763 if (!parser_next(parser)) {
2764 if (OPTS_FLAG(LOOP_LABELS))
2765 parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
2767 parseerror(parser, "expected 'switch' operand in parenthesis");
2771 if (parser->tok == ':') {
2772 if (!OPTS_FLAG(LOOP_LABELS))
2773 parseerror(parser, "labeled loops not activated, try using -floop-labels");
2774 if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
2775 parseerror(parser, "expected loop label");
2778 label = util_strdup(parser_tokval(parser));
2779 if (!parser_next(parser)) {
2781 parseerror(parser, "expected 'switch' operand in parenthesis");
2786 if (parser->tok != '(') {
2787 parseerror(parser, "expected 'switch' operand in parenthesis");
2791 vec_push(parser->breaks, label);
2793 rv = parse_switch_go(parser, block, out);
2796 if (vec_last(parser->breaks) != label) {
2797 parseerror(parser, "internal error: label stack corrupted");
2803 vec_pop(parser->breaks);
2808 static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
2810 ast_expression *operand;
2813 ast_switch *switchnode;
2814 ast_switch_case swcase;
2817 bool noref, is_static;
2818 uint32_t qflags = 0;
2820 lex_ctx ctx = parser_ctx(parser);
2822 (void)block; /* not touching */
2825 /* parse into the expression */
2826 if (!parser_next(parser)) {
2827 parseerror(parser, "expected switch operand");
2830 /* parse the operand */
2831 operand = parse_expression_leave(parser, false, false, false);
2835 switchnode = ast_switch_new(ctx, operand);
2838 if (parser->tok != ')') {
2839 ast_delete(switchnode);
2840 parseerror(parser, "expected closing paren after 'switch' operand");
2844 /* parse over the opening paren */
2845 if (!parser_next(parser) || parser->tok != '{') {
2846 ast_delete(switchnode);
2847 parseerror(parser, "expected list of cases");
2851 if (!parser_next(parser)) {
2852 ast_delete(switchnode);
2853 parseerror(parser, "expected 'case' or 'default'");
2857 /* new block; allow some variables to be declared here */
2858 parser_enterblock(parser);
2861 if (parser->tok == TOKEN_IDENT)
2862 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
2863 if (typevar || parser->tok == TOKEN_TYPENAME) {
2864 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
2865 ast_delete(switchnode);
2870 if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
2872 if (cvq == CV_WRONG) {
2873 ast_delete(switchnode);
2876 if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
2877 ast_delete(switchnode);
2886 while (parser->tok != '}') {
2887 ast_block *caseblock;
2889 if (!strcmp(parser_tokval(parser), "case")) {
2890 if (!parser_next(parser)) {
2891 ast_delete(switchnode);
2892 parseerror(parser, "expected expression for case");
2895 swcase.value = parse_expression_leave(parser, false, false, false);
2896 if (!swcase.value) {
2897 ast_delete(switchnode);
2898 parseerror(parser, "expected expression for case");
2901 if (!OPTS_FLAG(RELAXED_SWITCH)) {
2902 if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
2903 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
2909 else if (!strcmp(parser_tokval(parser), "default")) {
2910 swcase.value = NULL;
2911 if (!parser_next(parser)) {
2912 ast_delete(switchnode);
2913 parseerror(parser, "expected colon");
2918 ast_delete(switchnode);
2919 parseerror(parser, "expected 'case' or 'default'");
2923 /* Now the colon and body */
2924 if (parser->tok != ':') {
2925 if (swcase.value) ast_unref(swcase.value);
2926 ast_delete(switchnode);
2927 parseerror(parser, "expected colon");
2931 if (!parser_next(parser)) {
2932 if (swcase.value) ast_unref(swcase.value);
2933 ast_delete(switchnode);
2934 parseerror(parser, "expected statements or case");
2937 caseblock = ast_block_new(parser_ctx(parser));
2939 if (swcase.value) ast_unref(swcase.value);
2940 ast_delete(switchnode);
2943 swcase.code = (ast_expression*)caseblock;
2944 vec_push(switchnode->cases, swcase);
2946 ast_expression *expr;
2947 if (parser->tok == '}')
2949 if (parser->tok == TOKEN_KEYWORD) {
2950 if (!strcmp(parser_tokval(parser), "case") ||
2951 !strcmp(parser_tokval(parser), "default"))
2956 if (!parse_statement(parser, caseblock, &expr, true)) {
2957 ast_delete(switchnode);
2962 if (!ast_block_add_expr(caseblock, expr)) {
2963 ast_delete(switchnode);
2969 parser_leaveblock(parser);
2972 if (parser->tok != '}') {
2973 ast_delete(switchnode);
2974 parseerror(parser, "expected closing paren of case list");
2977 if (!parser_next(parser)) {
2978 ast_delete(switchnode);
2979 parseerror(parser, "parse error after switch");
2982 *out = (ast_expression*)switchnode;
2986 /* parse computed goto sides */
2987 static ast_expression *parse_goto_computed(parser_t *parser, ast_expression *side) {
2988 ast_expression *on_true;
2989 ast_expression *on_false;
2994 if (ast_istype(side, ast_ternary)) {
2995 on_true = parse_goto_computed(parser, ((ast_ternary*)side)->on_true);
2996 on_false = parse_goto_computed(parser, ((ast_ternary*)side)->on_false);
2998 if (!on_true || !on_false) {
2999 parseerror(parser, "expected label or expression in ternary");
3000 if (((ast_ternary*)side)->on_false) ast_unref(((ast_ternary*)side)->on_false);
3001 if (((ast_ternary*)side)->on_true) ast_unref(((ast_ternary*)side)->on_true);
3005 return (ast_expression*)ast_ifthen_new(parser_ctx(parser), ((ast_ternary*)side)->cond, on_true, on_false);
3006 } else if (ast_istype(side, ast_label)) {
3007 ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)side)->name);
3008 ast_goto_set_label(gt, ((ast_label*)side));
3009 return (ast_expression*)gt;
3014 static bool parse_goto(parser_t *parser, ast_expression **out)
3016 ast_goto *gt = NULL;
3017 ast_expression *lbl;
3019 if (!parser_next(parser))
3022 if (parser->tok != TOKEN_IDENT) {
3023 ast_expression *expression;
3025 /* could be an expression i.e computed goto :-) */
3026 if (parser->tok != '(') {
3027 parseerror(parser, "expected label name after `goto`");
3031 /* failed to parse expression for goto */
3032 if (!(expression = parse_expression(parser, false, true)) ||
3033 !(*out = parse_goto_computed(parser, expression))) {
3034 parseerror(parser, "invalid goto expression");
3035 ast_unref(expression);
3042 /* not computed goto */
3043 gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
3044 lbl = parser_find_label(parser, gt->name);
3046 if (!ast_istype(lbl, ast_label)) {
3047 parseerror(parser, "internal error: label is not an ast_label");
3051 ast_goto_set_label(gt, (ast_label*)lbl);
3054 vec_push(parser->gotos, gt);
3056 if (!parser_next(parser) || parser->tok != ';') {
3057 parseerror(parser, "semicolon expected after goto label");
3060 if (!parser_next(parser)) {
3061 parseerror(parser, "parse error after goto");
3065 *out = (ast_expression*)gt;
3069 static bool parse_skipwhite(parser_t *parser)
3072 if (!parser_next(parser))
3074 } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
3075 return parser->tok < TOKEN_ERROR;
3078 static bool parse_eol(parser_t *parser)
3080 if (!parse_skipwhite(parser))
3082 return parser->tok == TOKEN_EOL;
3085 static bool parse_pragma_do(parser_t *parser)
3087 if (!parser_next(parser) ||
3088 parser->tok != TOKEN_IDENT ||
3089 strcmp(parser_tokval(parser), "pragma"))
3091 parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
3094 if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
3095 parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
3099 if (!strcmp(parser_tokval(parser), "noref")) {
3100 if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
3101 parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
3104 parser->noref = !!parser_token(parser)->constval.i;
3105 if (!parse_eol(parser)) {
3106 parseerror(parser, "parse error after `noref` pragma");
3112 (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
3119 static bool parse_pragma(parser_t *parser)
3122 parser->lex->flags.preprocessing = true;
3123 parser->lex->flags.mergelines = true;
3124 rv = parse_pragma_do(parser);
3125 if (parser->tok != TOKEN_EOL) {
3126 parseerror(parser, "junk after pragma");
3129 parser->lex->flags.preprocessing = false;
3130 parser->lex->flags.mergelines = false;
3131 if (!parser_next(parser)) {
3132 parseerror(parser, "parse error after pragma");
3138 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
3140 bool noref, is_static;
3142 uint32_t qflags = 0;
3143 ast_value *typevar = NULL;
3144 char *vstring = NULL;
3148 if (parser->tok == TOKEN_IDENT)
3149 typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
3151 if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3153 /* local variable */
3155 parseerror(parser, "cannot declare a variable from here");
3158 if (opts.standard == COMPILER_QCC) {
3159 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
3162 if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
3166 else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
3168 if (cvq == CV_WRONG)
3170 return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
3172 else if (parser->tok == TOKEN_KEYWORD)
3174 if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
3179 if (!parser_next(parser)) {
3180 parseerror(parser, "parse error after __builtin_debug_printtype");
3184 if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
3186 ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
3187 con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
3188 if (!parser_next(parser)) {
3189 parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
3195 if (!parse_statement(parser, block, out, allow_cases))
3198 con_out("__builtin_debug_printtype: got no output node\n");
3201 ast_type_to_string(*out, ty, sizeof(ty));
3202 con_out("__builtin_debug_printtype: `%s`\n", ty);
3207 else if (!strcmp(parser_tokval(parser), "return"))
3209 return parse_return(parser, block, out);
3211 else if (!strcmp(parser_tokval(parser), "if"))
3213 return parse_if(parser, block, out);
3215 else if (!strcmp(parser_tokval(parser), "while"))
3217 return parse_while(parser, block, out);
3219 else if (!strcmp(parser_tokval(parser), "do"))
3221 return parse_dowhile(parser, block, out);
3223 else if (!strcmp(parser_tokval(parser), "for"))
3225 if (opts.standard == COMPILER_QCC) {
3226 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
3229 return parse_for(parser, block, out);
3231 else if (!strcmp(parser_tokval(parser), "break"))
3233 return parse_break_continue(parser, block, out, false);
3235 else if (!strcmp(parser_tokval(parser), "continue"))
3237 return parse_break_continue(parser, block, out, true);
3239 else if (!strcmp(parser_tokval(parser), "switch"))
3241 return parse_switch(parser, block, out);
3243 else if (!strcmp(parser_tokval(parser), "case") ||
3244 !strcmp(parser_tokval(parser), "default"))
3247 parseerror(parser, "unexpected 'case' label");
3252 else if (!strcmp(parser_tokval(parser), "goto"))
3254 return parse_goto(parser, out);
3256 else if (!strcmp(parser_tokval(parser), "typedef"))
3258 if (!parser_next(parser)) {
3259 parseerror(parser, "expected type definition after 'typedef'");
3262 return parse_typedef(parser);
3264 parseerror(parser, "Unexpected keyword");
3267 else if (parser->tok == '{')
3270 inner = parse_block(parser);
3273 *out = (ast_expression*)inner;
3276 else if (parser->tok == ':')
3280 if (!parser_next(parser)) {
3281 parseerror(parser, "expected label name");
3284 if (parser->tok != TOKEN_IDENT) {
3285 parseerror(parser, "label must be an identifier");
3288 label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
3290 if (!label->undefined) {
3291 parseerror(parser, "label `%s` already defined", label->name);
3294 label->undefined = false;
3297 label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
3298 vec_push(parser->labels, label);
3300 *out = (ast_expression*)label;
3301 if (!parser_next(parser)) {
3302 parseerror(parser, "parse error after label");
3305 for (i = 0; i < vec_size(parser->gotos); ++i) {
3306 if (!strcmp(parser->gotos[i]->name, label->name)) {
3307 ast_goto_set_label(parser->gotos[i], label);
3308 vec_remove(parser->gotos, i, 1);
3314 else if (parser->tok == ';')
3316 if (!parser_next(parser)) {
3317 parseerror(parser, "parse error after empty statement");
3324 ast_expression *exp = parse_expression(parser, false, false);
3328 if (!ast_side_effects(exp)) {
3329 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
3336 static bool parse_block_into(parser_t *parser, ast_block *block)
3340 parser_enterblock(parser);
3342 if (!parser_next(parser)) { /* skip the '{' */
3343 parseerror(parser, "expected function body");
3347 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3349 ast_expression *expr = NULL;
3350 if (parser->tok == '}')
3353 if (!parse_statement(parser, block, &expr, false)) {
3354 /* parseerror(parser, "parse error"); */
3360 if (!ast_block_add_expr(block, expr)) {
3367 if (parser->tok != '}') {
3370 (void)parser_next(parser);
3374 if (!parser_leaveblock(parser))
3376 return retval && !!block;
3379 static ast_block* parse_block(parser_t *parser)
3382 block = ast_block_new(parser_ctx(parser));
3385 if (!parse_block_into(parser, block)) {
3386 ast_block_delete(block);
3392 static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
3394 if (parser->tok == '{') {
3395 *out = (ast_expression*)parse_block(parser);
3398 return parse_statement(parser, NULL, out, false);
3401 static bool create_vector_members(ast_value *var, ast_member **me)
3404 size_t len = strlen(var->name);
3406 for (i = 0; i < 3; ++i) {
3407 char *name = (char*)mem_a(len+3);
3408 memcpy(name, var->name, len);
3410 name[len+1] = 'x'+i;
3412 me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
3421 do { ast_member_delete(me[--i]); } while(i);
3425 static bool parse_function_body(parser_t *parser, ast_value *var)
3427 ast_block *block = NULL;
3432 ast_expression *framenum = NULL;
3433 ast_expression *nextthink = NULL;
3434 /* None of the following have to be deleted */
3435 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
3436 ast_expression *gbl_time = NULL, *gbl_self = NULL;
3437 bool has_frame_think;
3441 has_frame_think = false;
3442 old = parser->function;
3444 if (vec_size(parser->gotos) || vec_size(parser->labels)) {
3445 parseerror(parser, "gotos/labels leaking");
3449 if (var->expression.flags & AST_FLAG_VARIADIC) {
3450 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
3451 "variadic function with implementation will not be able to access additional parameters"))
3457 if (parser->tok == '[') {
3458 /* got a frame definition: [ framenum, nextthink ]
3459 * this translates to:
3460 * self.frame = framenum;
3461 * self.nextthink = time + 0.1;
3462 * self.think = nextthink;
3466 fld_think = parser_find_field(parser, "think");
3467 fld_nextthink = parser_find_field(parser, "nextthink");
3468 fld_frame = parser_find_field(parser, "frame");
3469 if (!fld_think || !fld_nextthink || !fld_frame) {
3470 parseerror(parser, "cannot use [frame,think] notation without the required fields");
3471 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
3474 gbl_time = parser_find_global(parser, "time");
3475 gbl_self = parser_find_global(parser, "self");
3476 if (!gbl_time || !gbl_self) {
3477 parseerror(parser, "cannot use [frame,think] notation without the required globals");
3478 parseerror(parser, "please declare the following globals: `time`, `self`");
3482 if (!parser_next(parser))
3485 framenum = parse_expression_leave(parser, true, false, false);
3487 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
3490 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
3491 ast_unref(framenum);
3492 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
3496 if (parser->tok != ',') {
3497 ast_unref(framenum);
3498 parseerror(parser, "expected comma after frame number in [frame,think] notation");
3499 parseerror(parser, "Got a %i\n", parser->tok);
3503 if (!parser_next(parser)) {
3504 ast_unref(framenum);
3508 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
3510 /* qc allows the use of not-yet-declared functions here
3511 * - this automatically creates a prototype */
3512 ast_value *thinkfunc;
3513 ast_expression *functype = fld_think->expression.next;
3515 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
3516 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
3517 ast_unref(framenum);
3518 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
3522 if (!parser_next(parser)) {
3523 ast_unref(framenum);
3524 ast_delete(thinkfunc);
3528 vec_push(parser->globals, (ast_expression*)thinkfunc);
3529 util_htset(parser->htglobals, thinkfunc->name, thinkfunc);
3530 nextthink = (ast_expression*)thinkfunc;
3533 nextthink = parse_expression_leave(parser, true, false, false);
3535 ast_unref(framenum);
3536 parseerror(parser, "expected a think-function in [frame,think] notation");
3541 if (!ast_istype(nextthink, ast_value)) {
3542 parseerror(parser, "think-function in [frame,think] notation must be a constant");
3546 if (retval && parser->tok != ']') {
3547 parseerror(parser, "expected closing `]` for [frame,think] notation");
3551 if (retval && !parser_next(parser)) {
3555 if (retval && parser->tok != '{') {
3556 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
3561 ast_unref(nextthink);
3562 ast_unref(framenum);
3566 has_frame_think = true;
3569 block = ast_block_new(parser_ctx(parser));
3571 parseerror(parser, "failed to allocate block");
3572 if (has_frame_think) {
3573 ast_unref(nextthink);
3574 ast_unref(framenum);
3579 if (has_frame_think) {
3581 ast_expression *self_frame;
3582 ast_expression *self_nextthink;
3583 ast_expression *self_think;
3584 ast_expression *time_plus_1;
3585 ast_store *store_frame;
3586 ast_store *store_nextthink;
3587 ast_store *store_think;
3589 ctx = parser_ctx(parser);
3590 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
3591 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
3592 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
3594 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
3595 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
3597 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
3598 if (self_frame) ast_delete(self_frame);
3599 if (self_nextthink) ast_delete(self_nextthink);
3600 if (self_think) ast_delete(self_think);
3601 if (time_plus_1) ast_delete(time_plus_1);
3607 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
3608 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
3609 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
3612 ast_delete(self_frame);
3615 if (!store_nextthink) {
3616 ast_delete(self_nextthink);
3620 ast_delete(self_think);
3624 if (store_frame) ast_delete(store_frame);
3625 if (store_nextthink) ast_delete(store_nextthink);
3626 if (store_think) ast_delete(store_think);
3629 if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
3630 !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
3631 !ast_block_add_expr(block, (ast_expression*)store_think))
3638 parseerror(parser, "failed to generate code for [frame,think]");
3639 ast_unref(nextthink);
3640 ast_unref(framenum);
3646 parser_enterblock(parser);
3648 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
3650 ast_value *param = var->expression.params[parami];
3653 if (param->expression.vtype != TYPE_VECTOR &&
3654 (param->expression.vtype != TYPE_FIELD ||
3655 param->expression.next->expression.vtype != TYPE_VECTOR))
3660 if (!create_vector_members(param, me)) {
3661 ast_block_delete(block);
3665 for (e = 0; e < 3; ++e) {
3666 parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
3667 ast_block_collect(block, (ast_expression*)me[e]);
3671 func = ast_function_new(ast_ctx(var), var->name, var);
3673 parseerror(parser, "failed to allocate function for `%s`", var->name);
3674 ast_block_delete(block);
3677 vec_push(parser->functions, func);
3679 parser->function = func;
3680 if (!parse_block_into(parser, block)) {
3681 ast_block_delete(block);
3685 vec_push(func->blocks, block);
3687 parser->function = old;
3688 if (!parser_leaveblock(parser))
3690 if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
3691 parseerror(parser, "internal error: local scopes left");
3695 if (parser->tok == ';')
3696 return parser_next(parser);
3697 else if (opts.standard == COMPILER_QCC)
3698 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
3702 vec_pop(parser->functions);
3703 ast_function_delete(func);
3704 var->constval.vfunc = NULL;
3707 (void)!parser_leaveblock(parser);
3708 parser->function = old;
3712 static ast_expression *array_accessor_split(
3717 ast_expression *left,
3718 ast_expression *right
3724 lex_ctx ctx = ast_ctx(array);
3726 if (!left || !right) {
3727 if (left) ast_delete(left);
3728 if (right) ast_delete(right);
3732 cmp = ast_binary_new(ctx, INSTR_LT,
3733 (ast_expression*)index,
3734 (ast_expression*)parser_const_float(parser, middle));
3738 parseerror(parser, "internal error: failed to create comparison for array setter");
3742 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
3744 ast_delete(cmp); /* will delete left and right */
3745 parseerror(parser, "internal error: failed to create conditional jump for array setter");
3749 return (ast_expression*)ifthen;
3752 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
3754 lex_ctx ctx = ast_ctx(array);
3756 if (from+1 == afterend) {
3757 /* set this value */
3760 ast_array_index *subscript;
3762 int assignop = type_store_instr[value->expression.vtype];
3764 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3765 assignop = INSTR_STORE_V;
3767 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3771 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
3773 ast_delete(subscript);
3777 block = ast_block_new(ctx);
3783 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3788 ret = ast_return_new(ctx, NULL);
3794 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3799 return (ast_expression*)block;
3801 ast_expression *left, *right;
3802 size_t diff = afterend - from;
3803 size_t middle = from + diff/2;
3804 left = array_setter_node(parser, array, index, value, from, middle);
3805 right = array_setter_node(parser, array, index, value, middle, afterend);
3806 return array_accessor_split(parser, array, index, middle, left, right);
3810 static ast_expression *array_field_setter_node(
3819 lex_ctx ctx = ast_ctx(array);
3821 if (from+1 == afterend) {
3822 /* set this value */
3825 ast_entfield *entfield;
3826 ast_array_index *subscript;
3828 int assignop = type_storep_instr[value->expression.vtype];
3830 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
3831 assignop = INSTR_STOREP_V;
3833 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3837 entfield = ast_entfield_new_force(ctx,
3838 (ast_expression*)entity,
3839 (ast_expression*)subscript,
3840 (ast_expression*)subscript);
3842 ast_delete(subscript);
3846 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
3848 ast_delete(entfield);
3852 block = ast_block_new(ctx);
3858 if (!ast_block_add_expr(block, (ast_expression*)st)) {
3863 ret = ast_return_new(ctx, NULL);
3869 if (!ast_block_add_expr(block, (ast_expression*)ret)) {
3874 return (ast_expression*)block;
3876 ast_expression *left, *right;
3877 size_t diff = afterend - from;
3878 size_t middle = from + diff/2;
3879 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
3880 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
3881 return array_accessor_split(parser, array, index, middle, left, right);
3885 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
3887 lex_ctx ctx = ast_ctx(array);
3889 if (from+1 == afterend) {
3891 ast_array_index *subscript;
3893 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
3897 ret = ast_return_new(ctx, (ast_expression*)subscript);
3899 ast_delete(subscript);
3903 return (ast_expression*)ret;
3905 ast_expression *left, *right;
3906 size_t diff = afterend - from;
3907 size_t middle = from + diff/2;
3908 left = array_getter_node(parser, array, index, from, middle);
3909 right = array_getter_node(parser, array, index, middle, afterend);
3910 return array_accessor_split(parser, array, index, middle, left, right);
3914 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
3916 ast_function *func = NULL;
3917 ast_value *fval = NULL;
3918 ast_block *body = NULL;
3920 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
3922 parseerror(parser, "failed to create accessor function value");
3926 func = ast_function_new(ast_ctx(array), funcname, fval);
3929 parseerror(parser, "failed to create accessor function node");
3933 body = ast_block_new(ast_ctx(array));
3935 parseerror(parser, "failed to create block for array accessor");
3941 vec_push(func->blocks, body);
3944 vec_push(parser->accessors, fval);
3949 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
3951 ast_expression *root = NULL;
3952 ast_value *index = NULL;
3953 ast_value *value = NULL;
3957 if (!ast_istype(array->expression.next, ast_value)) {
3958 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
3962 if (!parser_create_array_accessor(parser, array, funcname, &fval))
3964 func = fval->constval.vfunc;
3965 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
3967 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
3968 value = ast_value_copy((ast_value*)array->expression.next);
3970 if (!index || !value) {
3971 parseerror(parser, "failed to create locals for array accessor");
3974 (void)!ast_value_set_name(value, "value"); /* not important */
3975 vec_push(fval->expression.params, index);
3976 vec_push(fval->expression.params, value);
3978 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
3980 parseerror(parser, "failed to build accessor search tree");
3984 array->setter = fval;
3985 return ast_block_add_expr(func->blocks[0], root);
3987 if (index) ast_delete(index);
3988 if (value) ast_delete(value);
3989 if (root) ast_delete(root);
3995 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
3997 ast_expression *root = NULL;
3998 ast_value *entity = NULL;
3999 ast_value *index = NULL;
4000 ast_value *value = NULL;
4004 if (!ast_istype(array->expression.next, ast_value)) {
4005 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4009 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4011 func = fval->constval.vfunc;
4012 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
4014 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
4015 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4016 value = ast_value_copy((ast_value*)array->expression.next);
4017 if (!entity || !index || !value) {
4018 parseerror(parser, "failed to create locals for array accessor");
4021 (void)!ast_value_set_name(value, "value"); /* not important */
4022 vec_push(fval->expression.params, entity);
4023 vec_push(fval->expression.params, index);
4024 vec_push(fval->expression.params, value);
4026 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
4028 parseerror(parser, "failed to build accessor search tree");
4032 array->setter = fval;
4033 return ast_block_add_expr(func->blocks[0], root);
4035 if (entity) ast_delete(entity);
4036 if (index) ast_delete(index);
4037 if (value) ast_delete(value);
4038 if (root) ast_delete(root);
4044 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
4046 ast_expression *root = NULL;
4047 ast_value *index = NULL;
4051 /* NOTE: checking array->expression.next rather than elemtype since
4052 * for fields elemtype is a temporary fieldtype.
4054 if (!ast_istype(array->expression.next, ast_value)) {
4055 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
4059 if (!parser_create_array_accessor(parser, array, funcname, &fval))
4061 func = fval->constval.vfunc;
4062 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
4064 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
4067 parseerror(parser, "failed to create locals for array accessor");
4070 vec_push(fval->expression.params, index);
4072 root = array_getter_node(parser, array, index, 0, array->expression.count);
4074 parseerror(parser, "failed to build accessor search tree");
4078 array->getter = fval;
4079 return ast_block_add_expr(func->blocks[0], root);
4081 if (index) ast_delete(index);
4082 if (root) ast_delete(root);
4088 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
4089 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
4097 bool variadic = false;
4099 ctx = parser_ctx(parser);
4101 /* for the sake of less code we parse-in in this function */
4102 if (!parser_next(parser)) {
4103 parseerror(parser, "expected parameter list");
4109 /* parse variables until we hit a closing paren */
4110 while (parser->tok != ')') {
4112 /* there must be commas between them */
4113 if (parser->tok != ',') {
4114 parseerror(parser, "expected comma or end of parameter list");
4117 if (!parser_next(parser)) {
4118 parseerror(parser, "expected parameter");
4124 if (parser->tok == TOKEN_DOTS) {
4125 /* '...' indicates a varargs function */
4127 if (!parser_next(parser)) {
4128 parseerror(parser, "expected parameter");
4131 if (parser->tok != ')') {
4132 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
4138 /* for anything else just parse a typename */
4139 param = parse_typename(parser, NULL, NULL);
4142 vec_push(params, param);
4143 if (param->expression.vtype >= TYPE_VARIANT) {
4144 char tname[1024]; /* typename is reserved in C++ */
4145 ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
4146 parseerror(parser, "type not supported as part of a parameter list: %s", tname);
4152 if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
4156 if (vec_size(params) > 8 && opts.standard == COMPILER_QCC)
4157 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
4160 if (!parser_next(parser)) {
4161 parseerror(parser, "parse error after typename");
4165 /* now turn 'var' into a function type */
4166 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
4167 fval->expression.next = (ast_expression*)var;
4169 fval->expression.flags |= AST_FLAG_VARIADIC;
4172 var->expression.params = params;
4179 for (i = 0; i < vec_size(params); ++i)
4180 ast_delete(params[i]);
4185 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
4187 ast_expression *cexp;
4188 ast_value *cval, *tmp;
4191 ctx = parser_ctx(parser);
4193 if (!parser_next(parser)) {
4195 parseerror(parser, "expected array-size");
4199 cexp = parse_expression_leave(parser, true, false, false);
4201 if (!cexp || !ast_istype(cexp, ast_value)) {
4205 parseerror(parser, "expected array-size as constant positive integer");
4208 cval = (ast_value*)cexp;
4210 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
4211 tmp->expression.next = (ast_expression*)var;
4214 if (cval->expression.vtype == TYPE_INTEGER)
4215 tmp->expression.count = cval->constval.vint;
4216 else if (cval->expression.vtype == TYPE_FLOAT)
4217 tmp->expression.count = cval->constval.vfloat;
4221 parseerror(parser, "array-size must be a positive integer constant");
4226 if (parser->tok != ']') {
4228 parseerror(parser, "expected ']' after array-size");
4231 if (!parser_next(parser)) {
4233 parseerror(parser, "error after parsing array size");
4239 /* Parse a complete typename.
4240 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
4241 * but when parsing variables separated by comma
4242 * 'storebase' should point to where the base-type should be kept.
4243 * The base type makes up every bit of type information which comes *before* the
4246 * The following will be parsed in its entirety:
4248 * The 'basetype' in this case is 'void()'
4249 * and if there's a comma after it, say:
4251 * then the type-information 'void()' can be stored in 'storebase'
4253 static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
4255 ast_value *var, *tmp;
4258 const char *name = NULL;
4259 bool isfield = false;
4260 bool wasarray = false;
4261 size_t morefields = 0;
4263 ctx = parser_ctx(parser);
4265 /* types may start with a dot */
4266 if (parser->tok == '.') {
4268 /* if we parsed a dot we need a typename now */
4269 if (!parser_next(parser)) {
4270 parseerror(parser, "expected typename for field definition");
4274 /* Further dots are handled seperately because they won't be part of the
4277 while (parser->tok == '.') {
4279 if (!parser_next(parser)) {
4280 parseerror(parser, "expected typename for field definition");
4285 if (parser->tok == TOKEN_IDENT)
4286 cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
4287 if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
4288 parseerror(parser, "expected typename");
4292 /* generate the basic type value */
4293 if (cached_typedef) {
4294 var = ast_value_copy(cached_typedef);
4295 ast_value_set_name(var, "<type(from_def)>");
4297 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
4299 for (; morefields; --morefields) {
4300 tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
4301 tmp->expression.next = (ast_expression*)var;
4305 /* do not yet turn into a field - remember:
4306 * .void() foo; is a field too
4307 * .void()() foo; is a function
4311 if (!parser_next(parser)) {
4313 parseerror(parser, "parse error after typename");
4317 /* an opening paren now starts the parameter-list of a function
4318 * this is where original-QC has parameter lists.
4319 * We allow a single parameter list here.
4320 * Much like fteqcc we don't allow `float()() x`
4322 if (parser->tok == '(') {
4323 var = parse_parameter_list(parser, var);
4328 /* store the base if requested */
4330 *storebase = ast_value_copy(var);
4332 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4333 tmp->expression.next = (ast_expression*)*storebase;
4338 /* there may be a name now */
4339 if (parser->tok == TOKEN_IDENT) {
4340 name = util_strdup(parser_tokval(parser));
4342 if (!parser_next(parser)) {
4344 parseerror(parser, "error after variable or field declaration");
4349 /* now this may be an array */
4350 if (parser->tok == '[') {
4352 var = parse_arraysize(parser, var);
4357 /* This is the point where we can turn it into a field */
4359 /* turn it into a field if desired */
4360 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
4361 tmp->expression.next = (ast_expression*)var;
4365 /* now there may be function parens again */
4366 if (parser->tok == '(' && opts.standard == COMPILER_QCC)
4367 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4368 if (parser->tok == '(' && wasarray)
4369 parseerror(parser, "arrays as part of a return type is not supported");
4370 while (parser->tok == '(') {
4371 var = parse_parameter_list(parser, var);
4380 /* finally name it */
4382 if (!ast_value_set_name(var, name)) {
4384 parseerror(parser, "internal error: failed to set name");
4387 /* free the name, ast_value_set_name duplicates */
4394 static bool parse_typedef(parser_t *parser)
4396 ast_value *typevar, *oldtype;
4397 ast_expression *old;
4399 typevar = parse_typename(parser, NULL, NULL);
4404 if ( (old = parser_find_var(parser, typevar->name)) ) {
4405 parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
4406 " -> `%s` has been declared here: %s:%i",
4407 typevar->name, ast_ctx(old).file, ast_ctx(old).line);
4408 ast_delete(typevar);
4412 if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
4413 parseerror(parser, "type `%s` has already been declared here: %s:%i",
4414 typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
4415 ast_delete(typevar);
4419 vec_push(parser->_typedefs, typevar);
4420 util_htset(vec_last(parser->typedefs), typevar->name, typevar);
4422 if (parser->tok != ';') {
4423 parseerror(parser, "expected semicolon after typedef");
4426 if (!parser_next(parser)) {
4427 parseerror(parser, "parse error after typedef");
4434 static const char *cvq_to_str(int cvq) {
4436 case CV_NONE: return "none";
4437 case CV_VAR: return "`var`";
4438 case CV_CONST: return "`const`";
4439 default: return "<INVALID>";
4443 static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
4446 if (proto->cvq != var->cvq) {
4447 if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
4448 !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4449 parser->tok == '='))
4451 return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
4452 "`%s` declared with different qualifiers: %s\n"
4453 " -> previous declaration here: %s:%i uses %s",
4454 var->name, cvq_to_str(var->cvq),
4455 ast_ctx(proto).file, ast_ctx(proto).line,
4456 cvq_to_str(proto->cvq));
4459 av = (var ->expression.flags & AST_FLAG_NORETURN);
4460 ao = (proto->expression.flags & AST_FLAG_NORETURN);
4462 return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
4463 "`%s` declared with different attributes%s\n"
4464 " -> previous declaration here: %s:%i",
4465 var->name, (av ? ": noreturn" : ""),
4466 ast_ctx(proto).file, ast_ctx(proto).line,
4467 (ao ? ": noreturn" : ""));
4472 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)
4476 ast_expression *old;
4480 ast_value *basetype = NULL;
4482 bool isparam = false;
4483 bool isvector = false;
4484 bool cleanvar = true;
4485 bool wasarray = false;
4489 if (!localblock && is_static)
4490 parseerror(parser, "`static` qualifier is not supported in global scope");
4492 /* get the first complete variable */
4493 var = parse_typename(parser, &basetype, cached_typedef);
4496 ast_delete(basetype);
4504 /* Part 0: finish the type */
4505 if (parser->tok == '(') {
4506 if (opts.standard == COMPILER_QCC)
4507 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4508 var = parse_parameter_list(parser, var);
4514 /* we only allow 1-dimensional arrays */
4515 if (parser->tok == '[') {
4517 var = parse_arraysize(parser, var);
4523 if (parser->tok == '(' && wasarray) {
4524 parseerror(parser, "arrays as part of a return type is not supported");
4525 /* we'll still parse the type completely for now */
4527 /* for functions returning functions */
4528 while (parser->tok == '(') {
4529 if (opts.standard == COMPILER_QCC)
4530 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
4531 var = parse_parameter_list(parser, var);
4538 var->cvq = qualifier;
4539 var->expression.flags |= qflags;
4540 if (var->expression.flags & AST_FLAG_DEPRECATED)
4541 var->desc = vstring;
4544 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
4545 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
4546 * is then filled with the previous definition and the parameter-names replaced.
4548 if (!strcmp(var->name, "nil")) {
4549 if (OPTS_FLAG(UNTYPED_NIL)) {
4550 if (!localblock || !OPTS_FLAG(PERMISSIVE))
4551 parseerror(parser, "name `nil` not allowed (try -fpermissive)");
4553 (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
4556 /* Deal with end_sys_ vars */
4558 if (!strcmp(var->name, "end_sys_globals")) {
4560 parser->crc_globals = vec_size(parser->globals);
4563 else if (!strcmp(var->name, "end_sys_fields")) {
4565 parser->crc_fields = vec_size(parser->fields);
4568 if (was_end && var->expression.vtype == TYPE_FIELD) {
4569 if (parsewarning(parser, WARN_END_SYS_FIELDS,
4570 "global '%s' hint should not be a field",
4571 parser_tokval(parser)))
4578 if (!nofields && var->expression.vtype == TYPE_FIELD)
4580 /* deal with field declarations */
4581 old = parser_find_field(parser, var->name);
4583 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
4584 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
4593 parseerror(parser, "field `%s` already declared here: %s:%i",
4594 var->name, ast_ctx(old).file, ast_ctx(old).line);
4599 if (opts.standard == COMPILER_QCC &&
4600 (old = parser_find_global(parser, var->name)))
4602 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4603 parseerror(parser, "field `%s` already declared here: %s:%i",
4604 var->name, ast_ctx(old).file, ast_ctx(old).line);
4611 /* deal with other globals */
4612 old = parser_find_global(parser, var->name);
4613 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
4615 /* This is a function which had a prototype */
4616 if (!ast_istype(old, ast_value)) {
4617 parseerror(parser, "internal error: prototype is not an ast_value");
4621 proto = (ast_value*)old;
4622 proto->desc = var->desc;
4623 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
4624 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
4626 ast_ctx(proto).file, ast_ctx(proto).line);
4630 /* we need the new parameter-names */
4631 for (i = 0; i < vec_size(proto->expression.params); ++i)
4632 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
4633 if (!parser_check_qualifiers(parser, var, proto)) {
4640 proto->expression.flags |= var->expression.flags;
4648 if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
4649 "global `%s` already declared here: %s:%i",
4650 var->name, ast_ctx(old).file, ast_ctx(old).line))
4655 proto = (ast_value*)old;
4656 if (!ast_istype(old, ast_value)) {
4657 parseerror(parser, "internal error: not an ast_value");
4662 if (!parser_check_qualifiers(parser, var, proto)) {
4667 proto->expression.flags |= var->expression.flags;
4671 if (opts.standard == COMPILER_QCC &&
4672 (old = parser_find_field(parser, var->name)))
4674 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
4675 parseerror(parser, "global `%s` already declared here: %s:%i",
4676 var->name, ast_ctx(old).file, ast_ctx(old).line);
4683 else /* it's not a global */
4685 old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
4686 if (old && !isparam) {
4687 parseerror(parser, "local `%s` already declared here: %s:%i",
4688 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4692 old = parser_find_local(parser, var->name, 0, &isparam);
4693 if (old && isparam) {
4694 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
4695 "local `%s` is shadowing a parameter", var->name))
4697 parseerror(parser, "local `%s` already declared here: %s:%i",
4698 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
4702 if (opts.standard != COMPILER_GMQCC) {
4710 /* in a noref section we simply bump the usecount */
4711 if (noref || parser->noref)
4715 * Create the global/local, and deal with vector types.
4718 if (var->expression.vtype == TYPE_VECTOR)
4720 else if (var->expression.vtype == TYPE_FIELD &&
4721 var->expression.next->expression.vtype == TYPE_VECTOR)
4725 if (!create_vector_members(var, me)) {
4732 /* deal with global variables, fields, functions */
4733 if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
4734 var->isfield = true;
4735 vec_push(parser->fields, (ast_expression*)var);
4736 util_htset(parser->htfields, var->name, var);
4738 for (i = 0; i < 3; ++i) {
4739 vec_push(parser->fields, (ast_expression*)me[i]);
4740 util_htset(parser->htfields, me[i]->name, me[i]);
4745 vec_push(parser->globals, (ast_expression*)var);
4746 util_htset(parser->htglobals, var->name, var);
4748 for (i = 0; i < 3; ++i) {
4749 vec_push(parser->globals, (ast_expression*)me[i]);
4750 util_htset(parser->htglobals, me[i]->name, me[i]);
4756 /* a static adds itself to be generated like any other global
4757 * but is added to the local namespace instead
4759 char *defname = NULL;
4760 size_t prefix_len, ln;
4762 ln = strlen(parser->function->name);
4763 vec_append(defname, ln, parser->function->name);
4765 vec_append(defname, 2, "::");
4766 /* remember the length up to here */
4767 prefix_len = vec_size(defname);
4769 /* Add it to the local scope */
4770 util_htset(vec_last(parser->variables), var->name, (void*)var);
4771 /* now rename the global */
4772 ln = strlen(var->name);
4773 vec_append(defname, ln, var->name);
4774 ast_value_set_name(var, defname);
4776 /* push it to the to-be-generated globals */
4777 vec_push(parser->globals, (ast_expression*)var);
4779 /* same game for the vector members */
4781 for (i = 0; i < 3; ++i) {
4782 util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
4784 vec_shrinkto(defname, prefix_len);
4785 ln = strlen(me[i]->name);
4786 vec_append(defname, ln, me[i]->name);
4787 ast_member_set_name(me[i], defname);
4789 vec_push(parser->globals, (ast_expression*)me[i]);
4794 vec_push(localblock->locals, var);
4795 parser_addlocal(parser, var->name, (ast_expression*)var);
4797 for (i = 0; i < 3; ++i) {
4798 parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
4799 ast_block_collect(localblock, (ast_expression*)me[i]);
4805 me[0] = me[1] = me[2] = NULL;
4810 if (var->expression.vtype == TYPE_ARRAY) {
4812 snprintf(name, sizeof(name), "%s##SET", var->name);
4813 if (!parser_create_array_setter(parser, var, name))
4815 snprintf(name, sizeof(name), "%s##GET", var->name);
4816 if (!parser_create_array_getter(parser, var, var->expression.next, name))
4819 else if (!localblock && !nofields &&
4820 var->expression.vtype == TYPE_FIELD &&
4821 var->expression.next->expression.vtype == TYPE_ARRAY)
4824 ast_expression *telem;
4826 ast_value *array = (ast_value*)var->expression.next;
4828 if (!ast_istype(var->expression.next, ast_value)) {
4829 parseerror(parser, "internal error: field element type must be an ast_value");
4833 snprintf(name, sizeof(name), "%s##SETF", var->name);
4834 if (!parser_create_array_field_setter(parser, array, name))
4837 telem = ast_type_copy(ast_ctx(var), array->expression.next);
4838 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
4839 tfield->expression.next = telem;
4840 snprintf(name, sizeof(name), "%s##GETFP", var->name);
4841 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
4849 if (parser->tok == ';') {
4850 ast_delete(basetype);
4851 if (!parser_next(parser)) {
4852 parseerror(parser, "error after variable declaration");
4858 if (parser->tok == ',')
4862 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
4865 parseerror(parser, "missing comma or semicolon while parsing variables");
4869 if (localblock && opts.standard == COMPILER_QCC) {
4870 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
4871 "initializing expression turns variable `%s` into a constant in this standard",
4878 if (parser->tok != '{') {
4879 if (parser->tok != '=') {
4880 parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
4884 if (!parser_next(parser)) {
4885 parseerror(parser, "error parsing initializer");
4889 else if (opts.standard == COMPILER_QCC) {
4890 parseerror(parser, "expected '=' before function body in this standard");
4893 if (parser->tok == '#') {
4894 ast_function *func = NULL;
4897 parseerror(parser, "cannot declare builtins within functions");
4900 if (var->expression.vtype != TYPE_FUNCTION) {
4901 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
4904 if (!parser_next(parser)) {
4905 parseerror(parser, "expected builtin number");
4908 if (parser->tok != TOKEN_INTCONST) {
4909 parseerror(parser, "builtin number must be an integer constant");
4912 if (parser_token(parser)->constval.i < 0) {
4913 parseerror(parser, "builtin number must be an integer greater than zero");
4917 if (var->hasvalue) {
4918 (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
4919 "builtin `%s` has already been defined\n"
4920 " -> previous declaration here: %s:%i",
4921 var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
4925 func = ast_function_new(ast_ctx(var), var->name, var);
4927 parseerror(parser, "failed to allocate function for `%s`", var->name);
4930 vec_push(parser->functions, func);
4932 func->builtin = -parser_token(parser)->constval.i-1;
4935 if (!parser_next(parser)) {
4936 parseerror(parser, "expected comma or semicolon");
4938 ast_function_delete(func);
4939 var->constval.vfunc = NULL;
4943 else if (parser->tok == '{' || parser->tok == '[')
4946 parseerror(parser, "cannot declare functions within functions");
4951 ast_ctx(proto) = parser_ctx(parser);
4953 if (!parse_function_body(parser, var))
4955 ast_delete(basetype);
4956 for (i = 0; i < vec_size(parser->gotos); ++i)
4957 parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
4958 vec_free(parser->gotos);
4959 vec_free(parser->labels);
4962 ast_expression *cexp;
4965 cexp = parse_expression_leave(parser, true, false, false);
4970 cval = (ast_value*)cexp;
4971 if (cval != parser->nil &&
4972 (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
4975 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
4979 if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
4980 qualifier != CV_VAR)
4982 var->cvq = CV_CONST;
4984 if (cval == parser->nil)
4985 var->expression.flags |= AST_FLAG_INITIALIZED;
4988 var->hasvalue = true;
4989 if (cval->expression.vtype == TYPE_STRING)
4990 var->constval.vstring = parser_strdup(cval->constval.vstring);
4991 else if (cval->expression.vtype == TYPE_FIELD)
4992 var->constval.vfield = cval;
4994 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
5000 shunt sy = { NULL, NULL };
5003 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
5004 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
5005 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
5006 if (!parser_sy_apply_operator(parser, &sy))
5009 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
5010 parseerror(parser, "internal error: leaked operands");
5011 if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
5021 if (parser->tok == ',') {
5022 if (!parser_next(parser)) {
5023 parseerror(parser, "expected another variable");
5027 if (parser->tok != TOKEN_IDENT) {
5028 parseerror(parser, "expected another variable");
5031 var = ast_value_copy(basetype);
5033 ast_value_set_name(var, parser_tokval(parser));
5034 if (!parser_next(parser)) {
5035 parseerror(parser, "error parsing variable declaration");
5041 if (parser->tok != ';') {
5042 parseerror(parser, "missing semicolon after variables");
5046 if (!parser_next(parser)) {
5047 parseerror(parser, "parse error after variable declaration");
5051 ast_delete(basetype);
5055 if (cleanvar && var)
5057 ast_delete(basetype);
5061 ast_delete(basetype);
5062 if (cleanvar && var)
5064 if (me[0]) ast_member_delete(me[0]);
5065 if (me[1]) ast_member_delete(me[1]);
5066 if (me[2]) ast_member_delete(me[2]);
5070 static bool parser_global_statement(parser_t *parser)
5074 bool is_static = false;
5075 uint32_t qflags = 0;
5076 ast_value *istype = NULL;
5077 char *vstring = NULL;
5079 if (parser->tok == TOKEN_IDENT)
5080 istype = parser_find_typedef(parser, parser_tokval(parser), 0);
5082 if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
5084 return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
5086 else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
5088 if (cvq == CV_WRONG)
5090 return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
5092 else if (parser->tok == TOKEN_KEYWORD)
5094 if (!strcmp(parser_tokval(parser), "typedef")) {
5095 if (!parser_next(parser)) {
5096 parseerror(parser, "expected type definition after 'typedef'");
5099 return parse_typedef(parser);
5101 parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
5104 else if (parser->tok == '#')
5106 return parse_pragma(parser);
5108 else if (parser->tok == '$')
5110 if (!parser_next(parser)) {
5111 parseerror(parser, "parse error");
5117 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
5123 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
5125 return util_crc16(old, str, strlen(str));
5128 static void progdefs_crc_file(const char *str)
5130 /* write to progdefs.h here */
5134 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
5136 old = progdefs_crc_sum(old, str);
5137 progdefs_crc_file(str);
5141 static void generate_checksum(parser_t *parser)
5143 uint16_t crc = 0xFFFF;
5147 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
5148 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
5150 progdefs_crc_file("\tint\tpad;\n");
5151 progdefs_crc_file("\tint\tofs_return[3];\n");
5152 progdefs_crc_file("\tint\tofs_parm0[3];\n");
5153 progdefs_crc_file("\tint\tofs_parm1[3];\n");
5154 progdefs_crc_file("\tint\tofs_parm2[3];\n");
5155 progdefs_crc_file("\tint\tofs_parm3[3];\n");
5156 progdefs_crc_file("\tint\tofs_parm4[3];\n");
5157 progdefs_crc_file("\tint\tofs_parm5[3];\n");
5158 progdefs_crc_file("\tint\tofs_parm6[3];\n");
5159 progdefs_crc_file("\tint\tofs_parm7[3];\n");
5161 for (i = 0; i < parser->crc_globals; ++i) {
5162 if (!ast_istype(parser->globals[i], ast_value))
5164 value = (ast_value*)(parser->globals[i]);
5165 switch (value->expression.vtype) {
5166 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5167 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5168 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5169 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5171 crc = progdefs_crc_both(crc, "\tint\t");
5174 crc = progdefs_crc_both(crc, value->name);
5175 crc = progdefs_crc_both(crc, ";\n");
5177 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
5178 for (i = 0; i < parser->crc_fields; ++i) {
5179 if (!ast_istype(parser->fields[i], ast_value))
5181 value = (ast_value*)(parser->fields[i]);
5182 switch (value->expression.next->expression.vtype) {
5183 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
5184 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
5185 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
5186 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
5188 crc = progdefs_crc_both(crc, "\tint\t");
5191 crc = progdefs_crc_both(crc, value->name);
5192 crc = progdefs_crc_both(crc, ";\n");
5194 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
5199 static parser_t *parser;
5206 parser = (parser_t*)mem_a(sizeof(parser_t));
5210 memset(parser, 0, sizeof(*parser));
5212 for (i = 0; i < operator_count; ++i) {
5213 if (operators[i].id == opid1('=')) {
5214 parser->assign_op = operators+i;
5218 if (!parser->assign_op) {
5219 printf("internal error: initializing parser: failed to find assign operator\n");
5224 vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
5225 vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
5226 vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
5227 vec_push(parser->_blocktypedefs, 0);
5229 empty_ctx.file = "<internal>";
5231 parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
5232 parser->nil->cvq = CV_CONST;
5233 if (OPTS_FLAG(UNTYPED_NIL))
5234 util_htset(parser->htglobals, "nil", (void*)parser->nil);
5238 bool parser_compile()
5240 /* initial lexer/parser state */
5241 parser->lex->flags.noops = true;
5243 if (parser_next(parser))
5245 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
5247 if (!parser_global_statement(parser)) {
5248 if (parser->tok == TOKEN_EOF)
5249 parseerror(parser, "unexpected eof");
5250 else if (compile_errors)
5251 parseerror(parser, "there have been errors, bailing out");
5252 lex_close(parser->lex);
5258 parseerror(parser, "parse error");
5259 lex_close(parser->lex);
5264 lex_close(parser->lex);
5267 return !compile_errors;
5270 bool parser_compile_file(const char *filename)
5272 parser->lex = lex_open(filename);
5274 con_err("failed to open file \"%s\"\n", filename);
5277 return parser_compile();
5280 bool parser_compile_string(const char *name, const char *str, size_t len)
5282 parser->lex = lex_open_string(str, len, name);
5284 con_err("failed to create lexer for string \"%s\"\n", name);
5287 return parser_compile();
5290 void parser_cleanup()
5293 for (i = 0; i < vec_size(parser->accessors); ++i) {
5294 ast_delete(parser->accessors[i]->constval.vfunc);
5295 parser->accessors[i]->constval.vfunc = NULL;
5296 ast_delete(parser->accessors[i]);
5298 for (i = 0; i < vec_size(parser->functions); ++i) {
5299 ast_delete(parser->functions[i]);
5301 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5302 ast_delete(parser->imm_vector[i]);
5304 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5305 ast_delete(parser->imm_string[i]);
5307 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5308 ast_delete(parser->imm_float[i]);
5310 for (i = 0; i < vec_size(parser->fields); ++i) {
5311 ast_delete(parser->fields[i]);
5313 for (i = 0; i < vec_size(parser->globals); ++i) {
5314 ast_delete(parser->globals[i]);
5316 vec_free(parser->accessors);
5317 vec_free(parser->functions);
5318 vec_free(parser->imm_vector);
5319 vec_free(parser->imm_string);
5320 vec_free(parser->imm_float);
5321 vec_free(parser->globals);
5322 vec_free(parser->fields);
5324 for (i = 0; i < vec_size(parser->variables); ++i)
5325 util_htdel(parser->variables[i]);
5326 vec_free(parser->variables);
5327 vec_free(parser->_blocklocals);
5328 vec_free(parser->_locals);
5330 for (i = 0; i < vec_size(parser->_typedefs); ++i)
5331 ast_delete(parser->_typedefs[i]);
5332 vec_free(parser->_typedefs);
5333 for (i = 0; i < vec_size(parser->typedefs); ++i)
5334 util_htdel(parser->typedefs[i]);
5335 vec_free(parser->typedefs);
5336 vec_free(parser->_blocktypedefs);
5338 vec_free(parser->_block_ctx);
5340 vec_free(parser->labels);
5341 vec_free(parser->gotos);
5342 vec_free(parser->breaks);
5343 vec_free(parser->continues);
5345 ast_value_delete(parser->nil);
5350 bool parser_finish(const char *output)
5356 if (compile_errors) {
5357 con_out("*** there were compile errors\n");
5361 ir = ir_builder_new("gmqcc_out");
5363 con_out("failed to allocate builder\n");
5367 for (i = 0; i < vec_size(parser->fields); ++i) {
5370 if (!ast_istype(parser->fields[i], ast_value))
5372 field = (ast_value*)parser->fields[i];
5373 hasvalue = field->hasvalue;
5374 field->hasvalue = false;
5375 if (!ast_global_codegen((ast_value*)field, ir, true)) {
5376 con_out("failed to generate field %s\n", field->name);
5377 ir_builder_delete(ir);
5382 ast_expression *subtype;
5383 field->hasvalue = true;
5384 subtype = field->expression.next;
5385 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
5386 if (subtype->expression.vtype == TYPE_FIELD)
5387 ifld->fieldtype = subtype->expression.next->expression.vtype;
5388 else if (subtype->expression.vtype == TYPE_FUNCTION)
5389 ifld->outtype = subtype->expression.next->expression.vtype;
5390 (void)!ir_value_set_field(field->ir_v, ifld);
5393 for (i = 0; i < vec_size(parser->globals); ++i) {
5395 if (!ast_istype(parser->globals[i], ast_value))
5397 asvalue = (ast_value*)(parser->globals[i]);
5398 if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
5399 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
5400 "unused global: `%s`", asvalue->name);
5402 if (!ast_global_codegen(asvalue, ir, false)) {
5403 con_out("failed to generate global %s\n", asvalue->name);
5404 ir_builder_delete(ir);
5408 for (i = 0; i < vec_size(parser->imm_float); ++i) {
5409 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
5410 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
5411 ir_builder_delete(ir);
5415 for (i = 0; i < vec_size(parser->imm_string); ++i) {
5416 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
5417 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
5418 ir_builder_delete(ir);
5422 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
5423 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
5424 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
5425 ir_builder_delete(ir);
5429 for (i = 0; i < vec_size(parser->globals); ++i) {
5431 if (!ast_istype(parser->globals[i], ast_value))
5433 asvalue = (ast_value*)(parser->globals[i]);
5434 if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
5436 if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
5437 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
5438 "uninitialized constant: `%s`",
5440 else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
5441 (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
5442 "uninitialized global: `%s`",
5445 if (!ast_generate_accessors(asvalue, ir)) {
5446 ir_builder_delete(ir);
5450 for (i = 0; i < vec_size(parser->fields); ++i) {
5452 asvalue = (ast_value*)(parser->fields[i]->expression.next);
5454 if (!ast_istype((ast_expression*)asvalue, ast_value))
5456 if (asvalue->expression.vtype != TYPE_ARRAY)
5458 if (!ast_generate_accessors(asvalue, ir)) {
5459 ir_builder_delete(ir);
5463 for (i = 0; i < vec_size(parser->functions); ++i) {
5464 if (!ast_function_codegen(parser->functions[i], ir)) {
5465 con_out("failed to generate function %s\n", parser->functions[i]->name);
5466 ir_builder_delete(ir);
5471 ir_builder_dump(ir, con_out);
5472 for (i = 0; i < vec_size(parser->functions); ++i) {
5473 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
5474 con_out("failed to finalize function %s\n", parser->functions[i]->name);
5475 ir_builder_delete(ir);
5480 if (compile_Werrors) {
5481 con_out("*** there were warnings treated as errors\n");
5482 compile_show_werrors();
5488 ir_builder_dump(ir, con_out);
5490 generate_checksum(parser);
5492 if (!ir_builder_generate(ir, output)) {
5493 con_out("*** failed to generate output file\n");
5494 ir_builder_delete(ir);
5499 ir_builder_delete(ir);