18 ast_function **functions;
19 ast_value **imm_float;
20 ast_value **imm_string;
21 ast_value **imm_vector;
23 /* must be deleted first, they reference immediates and values */
24 ast_value **accessors;
26 ast_value *imm_float_zero;
27 ast_value *imm_float_one;
28 ast_value *imm_vector_zero;
33 ast_function *function;
39 /* we store the '=' operator info */
40 const oper_info *assign_op;
42 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
43 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
44 * anything else: type error
50 static bool GMQCC_WARN parser_pop_local(parser_t *parser);
51 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields);
52 static ast_block* parse_block(parser_t *parser, bool warnreturn);
53 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn);
54 static ast_expression* parse_statement_or_block(parser_t *parser);
55 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
56 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma);
57 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma);
59 static void parseerror(parser_t *parser, const char *fmt, ...)
66 con_vprintmsg(LVL_ERROR, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "parse error", fmt, ap);
70 /* returns true if it counts as an error */
71 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
74 int lvl = LVL_WARNING;
76 if (!OPTS_WARN(warntype))
85 con_vprintmsg(lvl, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "warning", fmt, ap);
91 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
94 int lvl = LVL_WARNING;
96 if (!OPTS_WARN(warntype))
103 con_vprintmsg(lvl, ctx.file, ctx.line, "warning", fmt, ap);
109 /**********************************************************************
110 * some maths used for constant folding
113 vector vec3_add(vector a, vector b)
122 vector vec3_sub(vector a, vector b)
131 qcfloat vec3_mulvv(vector a, vector b)
133 return (a.x * b.x + a.y * b.y + a.z * b.z);
136 vector vec3_mulvf(vector a, float b)
145 /**********************************************************************
149 bool parser_next(parser_t *parser)
151 /* lex_do kills the previous token */
152 parser->tok = lex_do(parser->lex);
153 if (parser->tok == TOKEN_EOF)
155 if (parser->tok >= TOKEN_ERROR) {
156 parseerror(parser, "lex error");
162 #define parser_tokval(p) ((p)->lex->tok.value)
163 #define parser_token(p) (&((p)->lex->tok))
164 #define parser_ctx(p) ((p)->lex->tok.ctx)
166 static ast_value* parser_const_float(parser_t *parser, double d)
170 for (i = 0; i < vec_size(parser->imm_float); ++i) {
171 const double compare = parser->imm_float[i]->constval.vfloat;
172 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
173 return parser->imm_float[i];
175 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
177 out->constval.vfloat = d;
178 vec_push(parser->imm_float, out);
182 static ast_value* parser_const_float_0(parser_t *parser)
184 if (!parser->imm_float_zero)
185 parser->imm_float_zero = parser_const_float(parser, 0);
186 return parser->imm_float_zero;
189 static ast_value* parser_const_float_1(parser_t *parser)
191 if (!parser->imm_float_one)
192 parser->imm_float_one = parser_const_float(parser, 1);
193 return parser->imm_float_one;
196 static char *parser_strdup(const char *str)
199 /* actually dup empty strings */
200 char *out = mem_a(1);
204 return util_strdup(str);
207 static ast_value* parser_const_string(parser_t *parser, const char *str)
211 for (i = 0; i < vec_size(parser->imm_string); ++i) {
212 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
213 return parser->imm_string[i];
215 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
217 out->constval.vstring = parser_strdup(str);
218 vec_push(parser->imm_string, out);
222 static ast_value* parser_const_vector(parser_t *parser, vector v)
226 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
227 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
228 return parser->imm_vector[i];
230 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
232 out->constval.vvec = v;
233 vec_push(parser->imm_vector, out);
237 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
243 return parser_const_vector(parser, v);
246 static ast_value* parser_const_vector_0(parser_t *parser)
248 if (!parser->imm_vector_zero)
249 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
250 return parser->imm_vector_zero;
253 static ast_expression* parser_find_field(parser_t *parser, const char *name)
256 for (i = 0; i < vec_size(parser->fields); ++i) {
257 if (!strcmp(parser->fields[i].name, name))
258 return parser->fields[i].var;
263 static ast_expression* parser_find_global(parser_t *parser, const char *name)
266 for (i = 0; i < vec_size(parser->globals); ++i) {
267 if (!strcmp(parser->globals[i].name, name))
268 return parser->globals[i].var;
273 static ast_expression* parser_find_param(parser_t *parser, const char *name)
277 if (!parser->function)
279 fun = parser->function->vtype;
280 for (i = 0; i < vec_size(fun->expression.params); ++i) {
281 if (!strcmp(fun->expression.params[i]->name, name))
282 return (ast_expression*)(fun->expression.params[i]);
287 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
291 for (i = vec_size(parser->locals); i > upto;) {
293 if (!strcmp(parser->locals[i].name, name))
294 return parser->locals[i].var;
297 return parser_find_param(parser, name);
300 static ast_expression* parser_find_var(parser_t *parser, const char *name)
304 v = parser_find_local(parser, name, 0, &dummy);
305 if (!v) v = parser_find_global(parser, name);
311 size_t etype; /* 0 = expression, others are operators */
315 ast_block *block; /* for commas and function calls */
324 #define SY_PAREN_EXPR '('
325 #define SY_PAREN_FUNC 'f'
326 #define SY_PAREN_INDEX '['
328 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
339 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
343 e.out = (ast_expression*)v;
350 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
352 e.etype = 1 + (op - operators);
361 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
373 # define DEBUGSHUNTDO(x) x
375 # define DEBUGSHUNTDO(x)
378 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
379 * so we need to rotate it to become ent.(foo[n]).
381 static bool rotate_entfield_array_index_nodes(ast_expression **out)
383 ast_array_index *index;
384 ast_entfield *entfield;
388 ast_expression *entity;
390 lex_ctx ctx = ast_ctx(*out);
392 if (!ast_istype(*out, ast_array_index))
394 index = (ast_array_index*)*out;
396 if (!ast_istype(index->array, ast_entfield))
398 entfield = (ast_entfield*)index->array;
400 if (!ast_istype(entfield->field, ast_value))
402 field = (ast_value*)entfield->field;
405 entity = entfield->entity;
409 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
410 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
411 *out = (ast_expression*)entfield;
416 static bool parser_sy_pop(parser_t *parser, shunt *sy)
420 ast_expression *out = NULL;
421 ast_expression *exprs[3];
422 ast_block *blocks[3];
423 ast_value *asvalue[3];
424 size_t i, assignop, addop, subop;
425 qcint generated_op = 0;
430 if (!vec_size(sy->ops)) {
431 parseerror(parser, "internal error: missing operator");
435 if (vec_last(sy->ops).paren) {
436 parseerror(parser, "unmatched parenthesis");
440 op = &operators[vec_last(sy->ops).etype - 1];
441 ctx = vec_last(sy->ops).ctx;
443 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
445 if (vec_size(sy->out) < op->operands) {
446 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
447 op->op, (int)op->id);
451 vec_shrinkby(sy->ops, 1);
453 vec_shrinkby(sy->out, op->operands);
454 for (i = 0; i < op->operands; ++i) {
455 exprs[i] = sy->out[vec_size(sy->out)+i].out;
456 blocks[i] = sy->out[vec_size(sy->out)+i].block;
457 asvalue[i] = (ast_value*)exprs[i];
460 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
461 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
465 #define NotSameType(T) \
466 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
467 exprs[0]->expression.vtype != T)
468 #define CanConstFold1(A) \
469 (ast_istype((A), ast_value) && ((ast_value*)(A))->isconst)
470 #define CanConstFold(A, B) \
471 (CanConstFold1(A) && CanConstFold1(B))
472 #define ConstV(i) (asvalue[(i)]->constval.vvec)
473 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
474 #define ConstS(i) (asvalue[(i)]->constval.vstring)
478 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
482 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
483 if (exprs[1]->expression.vtype != TYPE_FIELD) {
484 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
487 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
489 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
490 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
494 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
500 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
501 !(exprs[0]->expression.vtype == TYPE_FIELD &&
502 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
504 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
505 parseerror(parser, "cannot index value of type %s", ty1);
508 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
509 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
510 parseerror(parser, "index must be of type float, not %s", ty1);
513 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
514 if (rotate_entfield_array_index_nodes(&out))
516 if (opts_standard != COMPILER_GMQCC) {
517 /* this error doesn't need to make us bail out */
518 (void)!parsewarning(parser, WARN_EXTENSIONS,
519 "accessing array-field members of an entity without parenthesis\n"
520 " -> this is an extension from -std=gmqcc");
527 vec_push(blocks[0]->exprs, exprs[1]);
529 blocks[0] = ast_block_new(ctx);
530 vec_push(blocks[0]->exprs, exprs[0]);
531 vec_push(blocks[0]->exprs, exprs[1]);
533 if (!ast_block_set_type(blocks[0], exprs[1]))
536 vec_push(sy->out, syblock(ctx, blocks[0]));
540 switch (exprs[0]->expression.vtype) {
542 if (CanConstFold1(exprs[0]))
543 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
545 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
546 (ast_expression*)parser_const_float_0(parser),
550 if (CanConstFold1(exprs[0]))
551 out = (ast_expression*)parser_const_vector_f(parser,
552 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
554 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
555 (ast_expression*)parser_const_vector_0(parser),
559 parseerror(parser, "invalid types used in expression: cannot negate type %s",
560 type_name[exprs[0]->expression.vtype]);
566 switch (exprs[0]->expression.vtype) {
568 if (CanConstFold1(exprs[0]))
569 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
571 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
574 if (CanConstFold1(exprs[0]))
575 out = (ast_expression*)parser_const_float(parser,
576 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
578 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
581 if (CanConstFold1(exprs[0]))
582 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
584 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
586 /* we don't constant-fold NOT for these types */
588 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
591 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
594 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
595 type_name[exprs[0]->expression.vtype]);
601 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
602 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
604 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
605 type_name[exprs[0]->expression.vtype],
606 type_name[exprs[1]->expression.vtype]);
609 switch (exprs[0]->expression.vtype) {
611 if (CanConstFold(exprs[0], exprs[1]))
613 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
616 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
619 if (CanConstFold(exprs[0], exprs[1]))
620 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
622 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
625 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
626 type_name[exprs[0]->expression.vtype],
627 type_name[exprs[1]->expression.vtype]);
632 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
633 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
635 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
636 type_name[exprs[1]->expression.vtype],
637 type_name[exprs[0]->expression.vtype]);
640 switch (exprs[0]->expression.vtype) {
642 if (CanConstFold(exprs[0], exprs[1]))
643 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
645 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
648 if (CanConstFold(exprs[0], exprs[1]))
649 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
651 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
654 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
655 type_name[exprs[1]->expression.vtype],
656 type_name[exprs[0]->expression.vtype]);
661 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
662 exprs[0]->expression.vtype != TYPE_VECTOR &&
663 exprs[0]->expression.vtype != TYPE_FLOAT &&
664 exprs[1]->expression.vtype != TYPE_VECTOR &&
665 exprs[1]->expression.vtype != TYPE_FLOAT)
667 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
668 type_name[exprs[1]->expression.vtype],
669 type_name[exprs[0]->expression.vtype]);
672 switch (exprs[0]->expression.vtype) {
674 if (exprs[1]->expression.vtype == TYPE_VECTOR)
676 if (CanConstFold(exprs[0], exprs[1]))
677 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
679 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
683 if (CanConstFold(exprs[0], exprs[1]))
684 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
686 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
690 if (exprs[1]->expression.vtype == TYPE_FLOAT)
692 if (CanConstFold(exprs[0], exprs[1]))
693 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
695 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
699 if (CanConstFold(exprs[0], exprs[1]))
700 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
702 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
706 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
707 type_name[exprs[1]->expression.vtype],
708 type_name[exprs[0]->expression.vtype]);
713 if (NotSameType(TYPE_FLOAT)) {
714 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
715 type_name[exprs[0]->expression.vtype],
716 type_name[exprs[1]->expression.vtype]);
719 if (CanConstFold(exprs[0], exprs[1]))
720 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
722 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
726 parseerror(parser, "qc does not have a modulo operator");
730 if (NotSameType(TYPE_FLOAT)) {
731 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
732 type_name[exprs[0]->expression.vtype],
733 type_name[exprs[1]->expression.vtype]);
736 if (CanConstFold(exprs[0], exprs[1]))
737 out = (ast_expression*)parser_const_float(parser,
738 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
739 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
741 out = (ast_expression*)ast_binary_new(ctx,
742 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
746 parseerror(parser, "TODO: bitxor");
751 case opid3('<','<','='):
752 case opid3('>','>','='):
753 parseerror(parser, "TODO: shifts");
757 generated_op += 1; /* INSTR_OR */
759 generated_op += INSTR_AND;
760 if (NotSameType(TYPE_FLOAT)) {
761 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
762 type_name[exprs[0]->expression.vtype],
763 type_name[exprs[1]->expression.vtype]);
764 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
765 parseerror(parser, "TODO: optional early out");
768 if (opts_standard == COMPILER_GMQCC)
769 con_out("TODO: early out logic\n");
770 if (CanConstFold(exprs[0], exprs[1]))
771 out = (ast_expression*)parser_const_float(parser,
772 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
774 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
778 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
779 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
780 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
781 parseerror(parser, "iperands of ternary expression must have the same type, got %s and %s", ty1, ty2);
784 if (CanConstFold1(exprs[0]))
785 out = (ConstF(0) ? exprs[1] : exprs[2]);
787 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
791 generated_op += 1; /* INSTR_GT */
793 generated_op += 1; /* INSTR_LT */
794 case opid2('>', '='):
795 generated_op += 1; /* INSTR_GE */
796 case opid2('<', '='):
797 generated_op += INSTR_LE;
798 if (NotSameType(TYPE_FLOAT)) {
799 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
800 type_name[exprs[0]->expression.vtype],
801 type_name[exprs[1]->expression.vtype]);
804 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
806 case opid2('!', '='):
807 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
808 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
809 type_name[exprs[0]->expression.vtype],
810 type_name[exprs[1]->expression.vtype]);
813 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
815 case opid2('=', '='):
816 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
817 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
818 type_name[exprs[0]->expression.vtype],
819 type_name[exprs[1]->expression.vtype]);
822 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
826 if (ast_istype(exprs[0], ast_entfield)) {
827 ast_expression *field = ((ast_entfield*)exprs[0])->field;
828 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
829 exprs[0]->expression.vtype == TYPE_FIELD &&
830 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
832 assignop = type_storep_instr[TYPE_VECTOR];
835 assignop = type_storep_instr[exprs[0]->expression.vtype];
836 if (!ast_compare_type(field->expression.next, exprs[1])) {
837 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
838 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
839 if (opts_standard == COMPILER_QCC &&
840 field->expression.next->expression.vtype == TYPE_FUNCTION &&
841 exprs[1]->expression.vtype == TYPE_FUNCTION)
843 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
844 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
850 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
855 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
856 exprs[0]->expression.vtype == TYPE_FIELD &&
857 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
859 assignop = type_store_instr[TYPE_VECTOR];
862 assignop = type_store_instr[exprs[0]->expression.vtype];
865 if (assignop == AINSTR_END) {
866 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
867 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
868 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
870 else if (!ast_compare_type(exprs[0], exprs[1])) {
871 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
872 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
873 if (opts_standard == COMPILER_QCC &&
874 exprs[0]->expression.vtype == TYPE_FUNCTION &&
875 exprs[1]->expression.vtype == TYPE_FUNCTION)
877 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
878 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
884 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
887 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
889 case opid3('+','+','P'):
890 case opid3('-','-','P'):
892 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
893 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
894 parseerror(parser, "invalid type for prefix increment: %s", ty1);
897 if (op->id == opid3('+','+','P'))
901 if (ast_istype(exprs[0], ast_entfield)) {
902 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
904 (ast_expression*)parser_const_float_1(parser));
906 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
908 (ast_expression*)parser_const_float_1(parser));
911 case opid3('S','+','+'):
912 case opid3('S','-','-'):
914 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
915 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
916 parseerror(parser, "invalid type for suffix increment: %s", ty1);
919 if (op->id == opid3('S','+','+')) {
926 if (ast_istype(exprs[0], ast_entfield)) {
927 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
929 (ast_expression*)parser_const_float_1(parser));
931 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
933 (ast_expression*)parser_const_float_1(parser));
937 out = (ast_expression*)ast_binary_new(ctx, subop,
939 (ast_expression*)parser_const_float_1(parser));
943 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
944 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
946 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
947 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
948 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
952 if (ast_istype(exprs[0], ast_entfield))
953 assignop = type_storep_instr[exprs[0]->expression.vtype];
955 assignop = type_store_instr[exprs[0]->expression.vtype];
956 switch (exprs[0]->expression.vtype) {
958 out = (ast_expression*)ast_binstore_new(ctx, assignop,
959 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
963 out = (ast_expression*)ast_binstore_new(ctx, assignop,
964 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
968 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
969 type_name[exprs[0]->expression.vtype],
970 type_name[exprs[1]->expression.vtype]);
976 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
977 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
978 exprs[0]->expression.vtype == TYPE_VECTOR))
980 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
981 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
982 parseerror(parser, "invalid types used in expression: %s and %s",
986 if (ast_istype(exprs[0], ast_entfield))
987 assignop = type_storep_instr[exprs[0]->expression.vtype];
989 assignop = type_store_instr[exprs[0]->expression.vtype];
990 switch (exprs[0]->expression.vtype) {
992 out = (ast_expression*)ast_binstore_new(ctx, assignop,
993 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
997 if (op->id == opid2('*','=')) {
998 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1001 /* there's no DIV_VF */
1002 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1003 (ast_expression*)parser_const_float_1(parser),
1007 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1012 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1013 type_name[exprs[0]->expression.vtype],
1014 type_name[exprs[1]->expression.vtype]);
1022 parseerror(parser, "failed to apply operand %s", op->op);
1026 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1027 vec_push(sy->out, syexp(ctx, out));
1031 static bool parser_close_call(parser_t *parser, shunt *sy)
1033 /* was a function call */
1034 ast_expression *fun;
1040 vec_shrinkby(sy->ops, 1);
1041 fid = sy->ops[vec_size(sy->ops)].off;
1043 /* out[fid] is the function
1044 * everything above is parameters...
1045 * 0 params = nothing
1046 * 1 params = ast_expression
1050 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1051 parseerror(parser, "internal error: function call needs function and parameter list...");
1055 fun = sy->out[fid].out;
1057 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1059 parseerror(parser, "out of memory");
1063 if (fid+1 == vec_size(sy->out)) {
1066 } else if (fid+2 == vec_size(sy->out)) {
1068 vec_shrinkby(sy->out, 1);
1069 params = sy->out[vec_size(sy->out)].block;
1073 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1075 paramcount = vec_size(params->exprs);
1076 call->params = params->exprs;
1077 params->exprs = NULL;
1080 if (!ast_call_check_types(call))
1083 parseerror(parser, "invalid function call");
1087 /* overwrite fid, the function, with a call */
1088 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1090 if (fun->expression.vtype != TYPE_FUNCTION) {
1091 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1095 if (!fun->expression.next) {
1096 parseerror(parser, "could not determine function return type");
1099 if (vec_size(fun->expression.params) != paramcount &&
1100 !(fun->expression.variadic &&
1101 vec_size(fun->expression.params) < paramcount))
1104 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1106 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1107 if (opts_standard == COMPILER_GMQCC)
1110 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1111 " -> `%s` has been declared here: %s:%i",
1112 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1113 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1115 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1116 " -> `%s` has been declared here: %s:%i",
1117 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1118 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1124 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1125 "too %s parameters for call to %s: expected %i, got %i\n"
1126 " -> `%s` has been declared here: %s:%i",
1127 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1128 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1130 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1131 "too %s parameters for function call: expected %i, got %i\n"
1132 " -> `%s` has been declared here: %s:%i",
1133 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1134 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1142 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1144 if (!vec_size(sy->ops)) {
1145 parseerror(parser, "unmatched closing paren");
1148 /* this would for bit a + (x) because there are no operators inside (x)
1149 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1150 parseerror(parser, "empty parenthesis expression");
1154 while (vec_size(sy->ops)) {
1155 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1156 if (!parser_close_call(parser, sy))
1160 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1161 vec_shrinkby(sy->ops, 1);
1162 return !functions_only;
1164 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1167 /* pop off the parenthesis */
1168 vec_shrinkby(sy->ops, 1);
1169 /* then apply the index operator */
1170 if (!parser_sy_pop(parser, sy))
1174 if (!parser_sy_pop(parser, sy))
1180 static void parser_reclassify_token(parser_t *parser)
1183 for (i = 0; i < operator_count; ++i) {
1184 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1185 parser->tok = TOKEN_OPERATOR;
1191 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1193 ast_expression *expr = NULL;
1195 bool wantop = false;
1196 bool gotmemberof = false;
1198 /* count the parens because an if starts with one, so the
1199 * end of a condition is an unmatched closing paren
1207 parser->lex->flags.noops = false;
1209 parser_reclassify_token(parser);
1214 gotmemberof = false;
1216 parser->memberof = 0;
1218 if (parser->tok == TOKEN_IDENT)
1220 ast_expression *var;
1222 parseerror(parser, "expected operator or end of statement");
1227 if (opts_standard == COMPILER_GMQCC)
1229 if (parser->memberof == TYPE_ENTITY) {
1230 /* still get vars first since there could be a fieldpointer */
1231 var = parser_find_var(parser, parser_tokval(parser));
1233 var = parser_find_field(parser, parser_tokval(parser));
1235 else if (parser->memberof == TYPE_VECTOR)
1237 parseerror(parser, "TODO: implement effective vector member access");
1240 else if (parser->memberof) {
1241 parseerror(parser, "namespace for member not found");
1245 var = parser_find_var(parser, parser_tokval(parser));
1247 var = parser_find_var(parser, parser_tokval(parser));
1249 var = parser_find_field(parser, parser_tokval(parser));
1252 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1255 if (ast_istype(var, ast_value))
1256 ((ast_value*)var)->uses++;
1257 vec_push(sy.out, syexp(parser_ctx(parser), var));
1258 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1260 else if (parser->tok == TOKEN_FLOATCONST) {
1263 parseerror(parser, "expected operator or end of statement, got constant");
1267 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1270 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1271 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1273 else if (parser->tok == TOKEN_INTCONST) {
1276 parseerror(parser, "expected operator or end of statement, got constant");
1280 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1283 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1284 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1286 else if (parser->tok == TOKEN_STRINGCONST) {
1289 parseerror(parser, "expected operator or end of statement, got constant");
1293 val = parser_const_string(parser, parser_tokval(parser));
1296 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1297 DEBUGSHUNTDO(con_out("push string\n"));
1299 else if (parser->tok == TOKEN_VECTORCONST) {
1302 parseerror(parser, "expected operator or end of statement, got constant");
1306 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1309 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1310 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1311 parser_token(parser)->constval.v.x,
1312 parser_token(parser)->constval.v.y,
1313 parser_token(parser)->constval.v.z));
1315 else if (parser->tok == '(') {
1316 parseerror(parser, "internal error: '(' should be classified as operator");
1319 else if (parser->tok == '[') {
1320 parseerror(parser, "internal error: '[' should be classified as operator");
1323 else if (parser->tok == ')') {
1325 DEBUGSHUNTDO(con_out("do[op] )\n"));
1329 /* we do expect an operator next */
1330 /* closing an opening paren */
1331 if (!parser_close_paren(parser, &sy, false))
1334 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1338 /* allowed for function calls */
1339 if (!parser_close_paren(parser, &sy, true))
1344 else if (parser->tok == ']') {
1346 parseerror(parser, "operand expected");
1350 if (!parser_close_paren(parser, &sy, false))
1354 else if (parser->tok != TOKEN_OPERATOR) {
1356 parseerror(parser, "expected operator or end of statement");
1363 /* classify the operator */
1364 const oper_info *op;
1365 const oper_info *olast = NULL;
1367 for (o = 0; o < operator_count; ++o) {
1368 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1369 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1370 !strcmp(parser_tokval(parser), operators[o].op))
1375 if (o == operator_count) {
1376 /* no operator found... must be the end of the statement */
1379 /* found an operator */
1382 /* when declaring variables, a comma starts a new variable */
1383 if (op->id == opid1(',') && !parens && stopatcomma) {
1384 /* fixup the token */
1389 /* a colon without a pervious question mark cannot be a ternary */
1390 if (!ternaries && op->id == opid2(':','?')) {
1395 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1396 olast = &operators[vec_last(sy.ops).etype-1];
1399 (op->prec < olast->prec) ||
1400 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1402 if (!parser_sy_pop(parser, &sy))
1404 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1405 olast = &operators[vec_last(sy.ops).etype-1];
1410 if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) {
1411 /* for gmqcc standard: open up the namespace of the previous type */
1412 ast_expression *prevex = vec_last(sy.out).out;
1414 parseerror(parser, "unexpected member operator");
1417 if (prevex->expression.vtype == TYPE_ENTITY)
1418 parser->memberof = TYPE_ENTITY;
1419 else if (prevex->expression.vtype == TYPE_VECTOR)
1420 parser->memberof = TYPE_VECTOR;
1422 parseerror(parser, "type error: type has no members");
1428 if (op->id == opid1('(')) {
1430 size_t sycount = vec_size(sy.out);
1431 DEBUGSHUNTDO(con_out("push [op] (\n"));
1433 /* we expected an operator, this is the function-call operator */
1434 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1437 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1438 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1441 } else if (op->id == opid1('[')) {
1443 parseerror(parser, "unexpected array subscript");
1447 /* push both the operator and the paren, this makes life easier */
1448 vec_push(sy.ops, syop(parser_ctx(parser), op));
1449 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1451 } else if (op->id == opid2('?',':')) {
1453 vec_push(sy.ops, syop(parser_ctx(parser), op));
1456 } else if (op->id == opid2(':','?')) {
1457 /* we don't push this operator */
1461 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1462 vec_push(sy.ops, syop(parser_ctx(parser), op));
1463 wantop = !!(op->flags & OP_SUFFIX);
1466 if (!parser_next(parser)) {
1469 if (parser->tok == ';' ||
1470 (!parens && parser->tok == ']'))
1476 while (vec_size(sy.ops)) {
1477 if (!parser_sy_pop(parser, &sy))
1481 parser->lex->flags.noops = true;
1482 if (!vec_size(sy.out)) {
1483 parseerror(parser, "empty expression");
1486 expr = sy.out[0].out;
1489 DEBUGSHUNTDO(con_out("shunt done\n"));
1493 parser->lex->flags.noops = true;
1499 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1501 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1504 if (!parser_next(parser)) {
1511 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1514 ast_expression *cond, *ontrue, *onfalse = NULL;
1517 lex_ctx ctx = parser_ctx(parser);
1519 (void)block; /* not touching */
1521 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1522 if (!parser_next(parser)) {
1523 parseerror(parser, "expected condition or 'not'");
1526 if (parser->tok == TOKEN_KEYWORD && !strcmp(parser_tokval(parser), "not")) {
1528 if (!parser_next(parser)) {
1529 parseerror(parser, "expected condition in parenthesis");
1533 if (parser->tok != '(') {
1534 parseerror(parser, "expected 'if' condition in parenthesis");
1537 /* parse into the expression */
1538 if (!parser_next(parser)) {
1539 parseerror(parser, "expected 'if' condition after opening paren");
1542 /* parse the condition */
1543 cond = parse_expression_leave(parser, false);
1547 if (parser->tok != ')') {
1548 parseerror(parser, "expected closing paren after 'if' condition");
1552 /* parse into the 'then' branch */
1553 if (!parser_next(parser)) {
1554 parseerror(parser, "expected statement for on-true branch of 'if'");
1558 ontrue = parse_statement_or_block(parser);
1563 /* check for an else */
1564 if (!strcmp(parser_tokval(parser), "else")) {
1565 /* parse into the 'else' branch */
1566 if (!parser_next(parser)) {
1567 parseerror(parser, "expected on-false branch after 'else'");
1572 onfalse = parse_statement_or_block(parser);
1581 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
1583 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1584 *out = (ast_expression*)ifthen;
1588 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1591 ast_expression *cond, *ontrue;
1593 lex_ctx ctx = parser_ctx(parser);
1595 (void)block; /* not touching */
1597 /* skip the 'while' and check for opening paren */
1598 if (!parser_next(parser) || parser->tok != '(') {
1599 parseerror(parser, "expected 'while' condition in parenthesis");
1602 /* parse into the expression */
1603 if (!parser_next(parser)) {
1604 parseerror(parser, "expected 'while' condition after opening paren");
1607 /* parse the condition */
1608 cond = parse_expression_leave(parser, false);
1612 if (parser->tok != ')') {
1613 parseerror(parser, "expected closing paren after 'while' condition");
1617 /* parse into the 'then' branch */
1618 if (!parser_next(parser)) {
1619 parseerror(parser, "expected while-loop body");
1623 ontrue = parse_statement_or_block(parser);
1629 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1630 *out = (ast_expression*)aloop;
1634 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1637 ast_expression *cond, *ontrue;
1639 lex_ctx ctx = parser_ctx(parser);
1641 (void)block; /* not touching */
1643 /* skip the 'do' and get the body */
1644 if (!parser_next(parser)) {
1645 parseerror(parser, "expected loop body");
1648 ontrue = parse_statement_or_block(parser);
1652 /* expect the "while" */
1653 if (parser->tok != TOKEN_KEYWORD ||
1654 strcmp(parser_tokval(parser), "while"))
1656 parseerror(parser, "expected 'while' and condition");
1661 /* skip the 'while' and check for opening paren */
1662 if (!parser_next(parser) || parser->tok != '(') {
1663 parseerror(parser, "expected 'while' condition in parenthesis");
1667 /* parse into the expression */
1668 if (!parser_next(parser)) {
1669 parseerror(parser, "expected 'while' condition after opening paren");
1673 /* parse the condition */
1674 cond = parse_expression_leave(parser, false);
1678 if (parser->tok != ')') {
1679 parseerror(parser, "expected closing paren after 'while' condition");
1685 if (!parser_next(parser) || parser->tok != ';') {
1686 parseerror(parser, "expected semicolon after condition");
1692 if (!parser_next(parser)) {
1693 parseerror(parser, "parse error");
1699 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1700 *out = (ast_expression*)aloop;
1704 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1707 ast_expression *initexpr, *cond, *increment, *ontrue;
1708 size_t oldblocklocal;
1711 lex_ctx ctx = parser_ctx(parser);
1713 oldblocklocal = parser->blocklocal;
1714 parser->blocklocal = vec_size(parser->locals);
1721 /* skip the 'while' and check for opening paren */
1722 if (!parser_next(parser) || parser->tok != '(') {
1723 parseerror(parser, "expected 'for' expressions in parenthesis");
1726 /* parse into the expression */
1727 if (!parser_next(parser)) {
1728 parseerror(parser, "expected 'for' initializer after opening paren");
1732 if (parser->tok == TOKEN_TYPENAME) {
1733 if (opts_standard != COMPILER_GMQCC) {
1734 if (parsewarning(parser, WARN_EXTENSIONS,
1735 "current standard does not allow variable declarations in for-loop initializers"))
1739 parseerror(parser, "TODO: assignment of new variables to be non-const");
1741 if (!parse_variable(parser, block, true))
1744 else if (parser->tok != ';')
1746 initexpr = parse_expression_leave(parser, false);
1751 /* move on to condition */
1752 if (parser->tok != ';') {
1753 parseerror(parser, "expected semicolon after for-loop initializer");
1756 if (!parser_next(parser)) {
1757 parseerror(parser, "expected for-loop condition");
1761 /* parse the condition */
1762 if (parser->tok != ';') {
1763 cond = parse_expression_leave(parser, false);
1768 /* move on to incrementor */
1769 if (parser->tok != ';') {
1770 parseerror(parser, "expected semicolon after for-loop initializer");
1773 if (!parser_next(parser)) {
1774 parseerror(parser, "expected for-loop condition");
1778 /* parse the incrementor */
1779 if (parser->tok != ')') {
1780 increment = parse_expression_leave(parser, false);
1783 if (!ast_istype(increment, ast_store) &&
1784 !ast_istype(increment, ast_call) &&
1785 !ast_istype(increment, ast_binstore))
1787 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
1793 if (parser->tok != ')') {
1794 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1797 /* parse into the 'then' branch */
1798 if (!parser_next(parser)) {
1799 parseerror(parser, "expected for-loop body");
1802 ontrue = parse_statement_or_block(parser);
1807 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1808 *out = (ast_expression*)aloop;
1810 while (vec_size(parser->locals) > parser->blocklocal)
1811 retval = retval && parser_pop_local(parser);
1812 parser->blocklocal = oldblocklocal;
1815 if (initexpr) ast_delete(initexpr);
1816 if (cond) ast_delete(cond);
1817 if (increment) ast_delete(increment);
1818 while (vec_size(parser->locals) > parser->blocklocal)
1819 (void)!parser_pop_local(parser);
1820 parser->blocklocal = oldblocklocal;
1824 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
1826 ast_expression *exp = NULL;
1827 ast_return *ret = NULL;
1828 ast_value *expected = parser->function->vtype;
1830 (void)block; /* not touching */
1832 if (!parser_next(parser)) {
1833 parseerror(parser, "expected return expression");
1837 if (parser->tok != ';') {
1838 exp = parse_expression(parser, false);
1842 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
1843 parseerror(parser, "return with invalid expression");
1846 ret = ast_return_new(exp->expression.node.context, exp);
1852 if (!parser_next(parser))
1853 parseerror(parser, "parse error");
1854 if (expected->expression.next->expression.vtype != TYPE_VOID) {
1855 if (opts_standard != COMPILER_GMQCC)
1856 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
1858 parseerror(parser, "return without value");
1860 ret = ast_return_new(parser_ctx(parser), NULL);
1862 *out = (ast_expression*)ret;
1866 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
1868 lex_ctx ctx = parser_ctx(parser);
1870 (void)block; /* not touching */
1872 if (!parser_next(parser) || parser->tok != ';') {
1873 parseerror(parser, "expected semicolon");
1877 if (!parser_next(parser))
1878 parseerror(parser, "parse error");
1880 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
1884 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
1886 ast_expression *operand;
1888 ast_switch *switchnode;
1889 ast_switch_case swcase;
1891 lex_ctx ctx = parser_ctx(parser);
1893 (void)block; /* not touching */
1895 /* parse over the opening paren */
1896 if (!parser_next(parser) || parser->tok != '(') {
1897 parseerror(parser, "expected switch operand in parenthesis");
1901 /* parse into the expression */
1902 if (!parser_next(parser)) {
1903 parseerror(parser, "expected switch operand");
1906 /* parse the operand */
1907 operand = parse_expression_leave(parser, false);
1911 if (!OPTS_FLAG(RELAXED_SWITCH)) {
1912 opval = (ast_value*)operand;
1913 if (!ast_istype(operand, ast_value) || !opval->isconst) {
1914 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
1920 switchnode = ast_switch_new(ctx, operand);
1923 if (parser->tok != ')') {
1924 ast_delete(switchnode);
1925 parseerror(parser, "expected closing paren after 'switch' operand");
1929 /* parse over the opening paren */
1930 if (!parser_next(parser) || parser->tok != '{') {
1931 ast_delete(switchnode);
1932 parseerror(parser, "expected list of cases");
1936 if (!parser_next(parser)) {
1937 ast_delete(switchnode);
1938 parseerror(parser, "expected 'case' or 'default'");
1943 while (parser->tok != '}') {
1944 ast_block *caseblock;
1946 if (parser->tok != TOKEN_KEYWORD) {
1947 ast_delete(switchnode);
1948 parseerror(parser, "expected 'case' or 'default'");
1951 if (!strcmp(parser_tokval(parser), "case")) {
1952 if (!parser_next(parser)) {
1953 ast_delete(switchnode);
1954 parseerror(parser, "expected expression for case");
1957 swcase.value = parse_expression_leave(parser, false);
1958 if (!swcase.value) {
1959 ast_delete(switchnode);
1960 parseerror(parser, "expected expression for case");
1964 else if (!strcmp(parser_tokval(parser), "default")) {
1965 swcase.value = NULL;
1966 if (!parser_next(parser)) {
1967 ast_delete(switchnode);
1968 parseerror(parser, "expected colon");
1973 /* Now the colon and body */
1974 if (parser->tok != ':') {
1975 if (swcase.value) ast_unref(swcase.value);
1976 ast_delete(switchnode);
1977 parseerror(parser, "expected colon");
1981 if (!parser_next(parser)) {
1982 if (swcase.value) ast_unref(swcase.value);
1983 ast_delete(switchnode);
1984 parseerror(parser, "expected statements or case");
1987 caseblock = ast_block_new(parser_ctx(parser));
1989 if (swcase.value) ast_unref(swcase.value);
1990 ast_delete(switchnode);
1993 swcase.code = (ast_expression*)caseblock;
1994 vec_push(switchnode->cases, swcase);
1996 ast_expression *expr;
1997 if (parser->tok == '}')
1999 if (parser->tok == TOKEN_KEYWORD) {
2000 if (!strcmp(parser_tokval(parser), "case") ||
2001 !strcmp(parser_tokval(parser), "default"))
2006 if (!parse_statement(parser, caseblock, &expr, true)) {
2007 ast_delete(switchnode);
2012 vec_push(caseblock->exprs, expr);
2017 if (parser->tok != '}') {
2018 ast_delete(switchnode);
2019 parseerror(parser, "expected closing paren of case list");
2022 if (!parser_next(parser)) {
2023 ast_delete(switchnode);
2024 parseerror(parser, "parse error after switch");
2027 *out = (ast_expression*)switchnode;
2031 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2033 if (parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2035 /* local variable */
2037 parseerror(parser, "cannot declare a variable from here");
2040 if (opts_standard == COMPILER_QCC) {
2041 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2044 if (!parse_variable(parser, block, false))
2049 else if (parser->tok == TOKEN_KEYWORD)
2051 if (!strcmp(parser_tokval(parser), "local"))
2054 parseerror(parser, "cannot declare a local variable here");
2057 if (!parser_next(parser)) {
2058 parseerror(parser, "expected variable declaration");
2061 if (!parse_variable(parser, block, true))
2066 else if (!strcmp(parser_tokval(parser), "return"))
2068 return parse_return(parser, block, out);
2070 else if (!strcmp(parser_tokval(parser), "if"))
2072 return parse_if(parser, block, out);
2074 else if (!strcmp(parser_tokval(parser), "while"))
2076 return parse_while(parser, block, out);
2078 else if (!strcmp(parser_tokval(parser), "do"))
2080 return parse_dowhile(parser, block, out);
2082 else if (!strcmp(parser_tokval(parser), "for"))
2084 if (opts_standard == COMPILER_QCC) {
2085 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2088 return parse_for(parser, block, out);
2090 else if (!strcmp(parser_tokval(parser), "break"))
2092 return parse_break_continue(parser, block, out, false);
2094 else if (!strcmp(parser_tokval(parser), "continue"))
2096 return parse_break_continue(parser, block, out, true);
2098 else if (!strcmp(parser_tokval(parser), "switch"))
2100 return parse_switch(parser, block, out);
2102 else if (!strcmp(parser_tokval(parser), "case") ||
2103 !strcmp(parser_tokval(parser), "default"))
2106 parseerror(parser, "unexpected 'case' label");
2111 parseerror(parser, "Unexpected keyword");
2114 else if (parser->tok == '{')
2117 inner = parse_block(parser, false);
2120 *out = (ast_expression*)inner;
2125 ast_expression *exp = parse_expression(parser, false);
2129 if (!ast_istype(exp, ast_store) &&
2130 !ast_istype(exp, ast_call) &&
2131 !ast_istype(exp, ast_binstore))
2133 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2140 static bool GMQCC_WARN parser_pop_local(parser_t *parser)
2145 ve = &vec_last(parser->locals);
2146 if (!parser->errors) {
2147 if (ast_istype(ve->var, ast_value) && !(((ast_value*)(ve->var))->uses)) {
2148 if (parsewarning(parser, WARN_UNUSED_VARIABLE, "unused variable: `%s`", ve->name))
2153 vec_pop(parser->locals);
2157 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn)
2159 size_t oldblocklocal;
2162 oldblocklocal = parser->blocklocal;
2163 parser->blocklocal = vec_size(parser->locals);
2165 if (!parser_next(parser)) { /* skip the '{' */
2166 parseerror(parser, "expected function body");
2170 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2172 ast_expression *expr;
2173 if (parser->tok == '}')
2176 if (!parse_statement(parser, block, &expr, false)) {
2177 /* parseerror(parser, "parse error"); */
2183 vec_push(block->exprs, expr);
2186 if (parser->tok != '}') {
2189 if (warnreturn && parser->function->vtype->expression.next->expression.vtype != TYPE_VOID)
2191 if (!vec_size(block->exprs) ||
2192 !ast_istype(vec_last(block->exprs), ast_return))
2194 if (parsewarning(parser, WARN_MISSING_RETURN_VALUES, "control reaches end of non-void function")) {
2200 (void)parser_next(parser);
2204 while (vec_size(parser->locals) > parser->blocklocal)
2205 retval = retval && parser_pop_local(parser);
2206 parser->blocklocal = oldblocklocal;
2210 static ast_block* parse_block(parser_t *parser, bool warnreturn)
2213 block = ast_block_new(parser_ctx(parser));
2216 if (!parse_block_into(parser, block, warnreturn)) {
2217 ast_block_delete(block);
2223 static ast_expression* parse_statement_or_block(parser_t *parser)
2225 ast_expression *expr = NULL;
2226 if (parser->tok == '{')
2227 return (ast_expression*)parse_block(parser, false);
2228 if (!parse_statement(parser, NULL, &expr, false))
2234 static bool create_vector_members(ast_value *var, varentry_t *ve)
2237 size_t len = strlen(var->name);
2239 for (i = 0; i < 3; ++i) {
2240 ve[i].var = (ast_expression*)ast_member_new(ast_ctx(var), (ast_expression*)var, i);
2244 ve[i].name = (char*)mem_a(len+3);
2246 ast_delete(ve[i].var);
2250 memcpy(ve[i].name, var->name, len);
2251 ve[i].name[len] = '_';
2252 ve[i].name[len+1] = 'x'+i;
2253 ve[i].name[len+2] = 0;
2262 ast_delete(ve[i].var);
2269 static bool parse_function_body(parser_t *parser, ast_value *var)
2271 ast_block *block = NULL;
2276 ast_expression *framenum = NULL;
2277 ast_expression *nextthink = NULL;
2278 /* None of the following have to be deleted */
2279 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2280 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2281 bool has_frame_think;
2285 has_frame_think = false;
2286 old = parser->function;
2288 if (var->expression.variadic) {
2289 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2290 "variadic function with implementation will not be able to access additional parameters"))
2296 if (parser->tok == '[') {
2297 /* got a frame definition: [ framenum, nextthink ]
2298 * this translates to:
2299 * self.frame = framenum;
2300 * self.nextthink = time + 0.1;
2301 * self.think = nextthink;
2305 fld_think = parser_find_field(parser, "think");
2306 fld_nextthink = parser_find_field(parser, "nextthink");
2307 fld_frame = parser_find_field(parser, "frame");
2308 if (!fld_think || !fld_nextthink || !fld_frame) {
2309 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2310 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2313 gbl_time = parser_find_global(parser, "time");
2314 gbl_self = parser_find_global(parser, "self");
2315 if (!gbl_time || !gbl_self) {
2316 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2317 parseerror(parser, "please declare the following globals: `time`, `self`");
2321 if (!parser_next(parser))
2324 framenum = parse_expression_leave(parser, true);
2326 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2329 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->isconst) {
2330 ast_unref(framenum);
2331 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2335 if (parser->tok != ',') {
2336 ast_unref(framenum);
2337 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2338 parseerror(parser, "Got a %i\n", parser->tok);
2342 if (!parser_next(parser)) {
2343 ast_unref(framenum);
2347 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2349 /* qc allows the use of not-yet-declared functions here
2350 * - this automatically creates a prototype */
2352 ast_value *thinkfunc;
2353 ast_expression *functype = fld_think->expression.next;
2355 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2356 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2357 ast_unref(framenum);
2358 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2362 if (!parser_next(parser)) {
2363 ast_unref(framenum);
2364 ast_delete(thinkfunc);
2368 varent.var = (ast_expression*)thinkfunc;
2369 varent.name = util_strdup(thinkfunc->name);
2370 vec_push(parser->globals, varent);
2371 nextthink = (ast_expression*)thinkfunc;
2374 nextthink = parse_expression_leave(parser, true);
2376 ast_unref(framenum);
2377 parseerror(parser, "expected a think-function in [frame,think] notation");
2382 if (!ast_istype(nextthink, ast_value)) {
2383 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2387 if (retval && parser->tok != ']') {
2388 parseerror(parser, "expected closing `]` for [frame,think] notation");
2392 if (retval && !parser_next(parser)) {
2396 if (retval && parser->tok != '{') {
2397 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2402 ast_unref(nextthink);
2403 ast_unref(framenum);
2407 has_frame_think = true;
2410 block = ast_block_new(parser_ctx(parser));
2412 parseerror(parser, "failed to allocate block");
2413 if (has_frame_think) {
2414 ast_unref(nextthink);
2415 ast_unref(framenum);
2420 if (has_frame_think) {
2422 ast_expression *self_frame;
2423 ast_expression *self_nextthink;
2424 ast_expression *self_think;
2425 ast_expression *time_plus_1;
2426 ast_store *store_frame;
2427 ast_store *store_nextthink;
2428 ast_store *store_think;
2430 ctx = parser_ctx(parser);
2431 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2432 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2433 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2435 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2436 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2438 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
2439 if (self_frame) ast_delete(self_frame);
2440 if (self_nextthink) ast_delete(self_nextthink);
2441 if (self_think) ast_delete(self_think);
2442 if (time_plus_1) ast_delete(time_plus_1);
2448 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
2449 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
2450 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
2453 ast_delete(self_frame);
2456 if (!store_nextthink) {
2457 ast_delete(self_nextthink);
2461 ast_delete(self_think);
2465 if (store_frame) ast_delete(store_frame);
2466 if (store_nextthink) ast_delete(store_nextthink);
2467 if (store_think) ast_delete(store_think);
2470 vec_push(block->exprs, (ast_expression*)store_frame);
2471 vec_push(block->exprs, (ast_expression*)store_nextthink);
2472 vec_push(block->exprs, (ast_expression*)store_think);
2476 parseerror(parser, "failed to generate code for [frame,think]");
2477 ast_unref(nextthink);
2478 ast_unref(framenum);
2484 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
2487 ast_value *param = var->expression.params[parami];
2489 if (param->expression.vtype != TYPE_VECTOR &&
2490 (param->expression.vtype != TYPE_FIELD ||
2491 param->expression.next->expression.vtype != TYPE_VECTOR))
2496 if (!create_vector_members(param, ve)) {
2497 ast_block_delete(block);
2501 for (e = 0; e < 3; ++e) {
2502 vec_push(parser->locals, ve[e]);
2503 ast_block_collect(block, ve[e].var);
2504 ve[e].var = NULL; /* collected */
2508 func = ast_function_new(ast_ctx(var), var->name, var);
2510 parseerror(parser, "failed to allocate function for `%s`", var->name);
2511 ast_block_delete(block);
2514 vec_push(parser->functions, func);
2516 parser->function = func;
2517 if (!parse_block_into(parser, block, true)) {
2518 ast_block_delete(block);
2522 vec_push(func->blocks, block);
2524 parser->function = old;
2525 while (vec_size(parser->locals))
2526 retval = retval && parser_pop_local(parser);
2528 if (parser->tok == ';')
2529 return parser_next(parser);
2530 else if (opts_standard == COMPILER_QCC)
2531 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
2535 vec_pop(parser->functions);
2536 ast_function_delete(func);
2537 var->constval.vfunc = NULL;
2540 while (vec_size(parser->locals)) {
2541 mem_d(vec_last(parser->locals).name);
2542 vec_pop(parser->locals);
2544 parser->function = old;
2548 static ast_expression *array_accessor_split(
2553 ast_expression *left,
2554 ast_expression *right
2560 lex_ctx ctx = ast_ctx(array);
2562 if (!left || !right) {
2563 if (left) ast_delete(left);
2564 if (right) ast_delete(right);
2568 cmp = ast_binary_new(ctx, INSTR_LT,
2569 (ast_expression*)index,
2570 (ast_expression*)parser_const_float(parser, middle));
2574 parseerror(parser, "internal error: failed to create comparison for array setter");
2578 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
2580 ast_delete(cmp); /* will delete left and right */
2581 parseerror(parser, "internal error: failed to create conditional jump for array setter");
2585 return (ast_expression*)ifthen;
2588 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
2590 lex_ctx ctx = ast_ctx(array);
2592 if (from+1 == afterend) {
2593 /* set this value */
2596 ast_array_index *subscript;
2598 int assignop = type_store_instr[value->expression.vtype];
2600 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2601 assignop = INSTR_STORE_V;
2603 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2607 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
2609 ast_delete(subscript);
2613 block = ast_block_new(ctx);
2619 vec_push(block->exprs, (ast_expression*)st);
2621 ret = ast_return_new(ctx, NULL);
2627 vec_push(block->exprs, (ast_expression*)ret);
2629 return (ast_expression*)block;
2631 ast_expression *left, *right;
2632 size_t diff = afterend - from;
2633 size_t middle = from + diff/2;
2634 left = array_setter_node(parser, array, index, value, from, middle);
2635 right = array_setter_node(parser, array, index, value, middle, afterend);
2636 return array_accessor_split(parser, array, index, middle, left, right);
2640 static ast_expression *array_field_setter_node(
2649 lex_ctx ctx = ast_ctx(array);
2651 if (from+1 == afterend) {
2652 /* set this value */
2655 ast_entfield *entfield;
2656 ast_array_index *subscript;
2658 int assignop = type_storep_instr[value->expression.vtype];
2660 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2661 assignop = INSTR_STOREP_V;
2663 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2667 entfield = ast_entfield_new_force(ctx,
2668 (ast_expression*)entity,
2669 (ast_expression*)subscript,
2670 (ast_expression*)subscript);
2672 ast_delete(subscript);
2676 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
2678 ast_delete(entfield);
2682 block = ast_block_new(ctx);
2688 vec_push(block->exprs, (ast_expression*)st);
2690 ret = ast_return_new(ctx, NULL);
2696 vec_push(block->exprs, (ast_expression*)ret);
2698 return (ast_expression*)block;
2700 ast_expression *left, *right;
2701 size_t diff = afterend - from;
2702 size_t middle = from + diff/2;
2703 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
2704 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
2705 return array_accessor_split(parser, array, index, middle, left, right);
2709 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
2711 lex_ctx ctx = ast_ctx(array);
2713 if (from+1 == afterend) {
2715 ast_array_index *subscript;
2717 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2721 ret = ast_return_new(ctx, (ast_expression*)subscript);
2723 ast_delete(subscript);
2727 return (ast_expression*)ret;
2729 ast_expression *left, *right;
2730 size_t diff = afterend - from;
2731 size_t middle = from + diff/2;
2732 left = array_getter_node(parser, array, index, from, middle);
2733 right = array_getter_node(parser, array, index, middle, afterend);
2734 return array_accessor_split(parser, array, index, middle, left, right);
2738 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
2740 ast_function *func = NULL;
2741 ast_value *fval = NULL;
2742 ast_block *body = NULL;
2744 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
2746 parseerror(parser, "failed to create accessor function value");
2750 func = ast_function_new(ast_ctx(array), funcname, fval);
2753 parseerror(parser, "failed to create accessor function node");
2757 body = ast_block_new(ast_ctx(array));
2759 parseerror(parser, "failed to create block for array accessor");
2765 vec_push(func->blocks, body);
2768 vec_push(parser->accessors, fval);
2773 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
2775 ast_expression *root = NULL;
2776 ast_value *index = NULL;
2777 ast_value *value = NULL;
2781 if (!ast_istype(array->expression.next, ast_value)) {
2782 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2786 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2788 func = fval->constval.vfunc;
2789 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2791 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2792 value = ast_value_copy((ast_value*)array->expression.next);
2794 if (!index || !value) {
2795 parseerror(parser, "failed to create locals for array accessor");
2798 (void)!ast_value_set_name(value, "value"); /* not important */
2799 vec_push(fval->expression.params, index);
2800 vec_push(fval->expression.params, value);
2802 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
2804 parseerror(parser, "failed to build accessor search tree");
2808 vec_push(func->blocks[0]->exprs, root);
2809 array->setter = fval;
2812 if (index) ast_delete(index);
2813 if (value) ast_delete(value);
2814 if (root) ast_delete(root);
2820 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
2822 ast_expression *root = NULL;
2823 ast_value *entity = NULL;
2824 ast_value *index = NULL;
2825 ast_value *value = NULL;
2829 if (!ast_istype(array->expression.next, ast_value)) {
2830 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2834 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2836 func = fval->constval.vfunc;
2837 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2839 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
2840 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2841 value = ast_value_copy((ast_value*)array->expression.next);
2842 if (!entity || !index || !value) {
2843 parseerror(parser, "failed to create locals for array accessor");
2846 (void)!ast_value_set_name(value, "value"); /* not important */
2847 vec_push(fval->expression.params, entity);
2848 vec_push(fval->expression.params, index);
2849 vec_push(fval->expression.params, value);
2851 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
2853 parseerror(parser, "failed to build accessor search tree");
2857 vec_push(func->blocks[0]->exprs, root);
2858 array->setter = fval;
2861 if (entity) ast_delete(entity);
2862 if (index) ast_delete(index);
2863 if (value) ast_delete(value);
2864 if (root) ast_delete(root);
2870 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
2872 ast_expression *root = NULL;
2873 ast_value *index = NULL;
2877 /* NOTE: checking array->expression.next rather than elemtype since
2878 * for fields elemtype is a temporary fieldtype.
2880 if (!ast_istype(array->expression.next, ast_value)) {
2881 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2885 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2887 func = fval->constval.vfunc;
2888 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
2890 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2893 parseerror(parser, "failed to create locals for array accessor");
2896 vec_push(fval->expression.params, index);
2898 root = array_getter_node(parser, array, index, 0, array->expression.count);
2900 parseerror(parser, "failed to build accessor search tree");
2904 vec_push(func->blocks[0]->exprs, root);
2905 array->getter = fval;
2908 if (index) ast_delete(index);
2909 if (root) ast_delete(root);
2915 static ast_value *parse_typename(parser_t *parser, ast_value **storebase);
2916 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
2924 bool variadic = false;
2926 ctx = parser_ctx(parser);
2928 /* for the sake of less code we parse-in in this function */
2929 if (!parser_next(parser)) {
2930 parseerror(parser, "expected parameter list");
2936 /* parse variables until we hit a closing paren */
2937 while (parser->tok != ')') {
2939 /* there must be commas between them */
2940 if (parser->tok != ',') {
2941 parseerror(parser, "expected comma or end of parameter list");
2944 if (!parser_next(parser)) {
2945 parseerror(parser, "expected parameter");
2951 if (parser->tok == TOKEN_DOTS) {
2952 /* '...' indicates a varargs function */
2954 if (!parser_next(parser)) {
2955 parseerror(parser, "expected parameter");
2958 if (parser->tok != ')') {
2959 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
2965 /* for anything else just parse a typename */
2966 param = parse_typename(parser, NULL);
2969 vec_push(params, param);
2970 if (param->expression.vtype >= TYPE_VARIANT) {
2971 char typename[1024];
2972 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
2973 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
2980 if (vec_size(params) > 8 && opts_standard == COMPILER_QCC)
2981 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
2984 if (!parser_next(parser)) {
2985 parseerror(parser, "parse error after typename");
2989 /* now turn 'var' into a function type */
2990 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
2991 fval->expression.next = (ast_expression*)var;
2992 fval->expression.variadic = variadic;
2995 var->expression.params = params;
3002 for (i = 0; i < vec_size(params); ++i)
3003 ast_delete(params[i]);
3008 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3010 ast_expression *cexp;
3011 ast_value *cval, *tmp;
3014 ctx = parser_ctx(parser);
3016 if (!parser_next(parser)) {
3018 parseerror(parser, "expected array-size");
3022 cexp = parse_expression_leave(parser, true);
3024 if (!cexp || !ast_istype(cexp, ast_value)) {
3028 parseerror(parser, "expected array-size as constant positive integer");
3031 cval = (ast_value*)cexp;
3033 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3034 tmp->expression.next = (ast_expression*)var;
3037 if (cval->expression.vtype == TYPE_INTEGER)
3038 tmp->expression.count = cval->constval.vint;
3039 else if (cval->expression.vtype == TYPE_FLOAT)
3040 tmp->expression.count = cval->constval.vfloat;
3044 parseerror(parser, "array-size must be a positive integer constant");
3049 if (parser->tok != ']') {
3051 parseerror(parser, "expected ']' after array-size");
3054 if (!parser_next(parser)) {
3056 parseerror(parser, "error after parsing array size");
3062 /* Parse a complete typename.
3063 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3064 * but when parsing variables separated by comma
3065 * 'storebase' should point to where the base-type should be kept.
3066 * The base type makes up every bit of type information which comes *before* the
3069 * The following will be parsed in its entirety:
3071 * The 'basetype' in this case is 'void()'
3072 * and if there's a comma after it, say:
3074 * then the type-information 'void()' can be stored in 'storebase'
3076 static ast_value *parse_typename(parser_t *parser, ast_value **storebase)
3078 ast_value *var, *tmp;
3081 const char *name = NULL;
3082 bool isfield = false;
3083 bool wasarray = false;
3085 ctx = parser_ctx(parser);
3087 /* types may start with a dot */
3088 if (parser->tok == '.') {
3090 /* if we parsed a dot we need a typename now */
3091 if (!parser_next(parser)) {
3092 parseerror(parser, "expected typename for field definition");
3095 if (parser->tok != TOKEN_TYPENAME) {
3096 parseerror(parser, "expected typename");
3101 /* generate the basic type value */
3102 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3103 /* do not yet turn into a field - remember:
3104 * .void() foo; is a field too
3105 * .void()() foo; is a function
3109 if (!parser_next(parser)) {
3111 parseerror(parser, "parse error after typename");
3115 /* an opening paren now starts the parameter-list of a function
3116 * this is where original-QC has parameter lists.
3117 * We allow a single parameter list here.
3118 * Much like fteqcc we don't allow `float()() x`
3120 if (parser->tok == '(') {
3121 var = parse_parameter_list(parser, var);
3126 /* store the base if requested */
3128 *storebase = ast_value_copy(var);
3130 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3131 tmp->expression.next = (ast_expression*)*storebase;
3136 /* there may be a name now */
3137 if (parser->tok == TOKEN_IDENT) {
3138 name = util_strdup(parser_tokval(parser));
3140 if (!parser_next(parser)) {
3142 parseerror(parser, "error after variable or field declaration");
3147 /* now this may be an array */
3148 if (parser->tok == '[') {
3150 var = parse_arraysize(parser, var);
3155 /* This is the point where we can turn it into a field */
3157 /* turn it into a field if desired */
3158 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3159 tmp->expression.next = (ast_expression*)var;
3163 /* now there may be function parens again */
3164 if (parser->tok == '(' && opts_standard == COMPILER_QCC)
3165 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3166 if (parser->tok == '(' && wasarray)
3167 parseerror(parser, "arrays as part of a return type is not supported");
3168 while (parser->tok == '(') {
3169 var = parse_parameter_list(parser, var);
3178 /* finally name it */
3180 if (!ast_value_set_name(var, name)) {
3182 parseerror(parser, "internal error: failed to set name");
3185 /* free the name, ast_value_set_name duplicates */
3192 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields)
3196 ast_expression *old;
3200 ast_value *basetype = NULL;
3202 bool isparam = false;
3203 bool isvector = false;
3204 bool cleanvar = true;
3205 bool wasarray = false;
3207 varentry_t varent, ve[3];
3209 /* get the first complete variable */
3210 var = parse_typename(parser, &basetype);
3213 ast_delete(basetype);
3217 memset(&varent, 0, sizeof(varent));
3218 memset(&ve, 0, sizeof(ve));
3224 /* Part 0: finish the type */
3225 if (parser->tok == '(') {
3226 if (opts_standard == COMPILER_QCC)
3227 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3228 var = parse_parameter_list(parser, var);
3234 /* we only allow 1-dimensional arrays */
3235 if (parser->tok == '[') {
3237 var = parse_arraysize(parser, var);
3243 if (parser->tok == '(' && wasarray) {
3244 parseerror(parser, "arrays as part of a return type is not supported");
3245 /* we'll still parse the type completely for now */
3247 /* for functions returning functions */
3248 while (parser->tok == '(') {
3249 if (opts_standard == COMPILER_QCC)
3250 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3251 var = parse_parameter_list(parser, var);
3259 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3260 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3261 * is then filled with the previous definition and the parameter-names replaced.
3264 /* Deal with end_sys_ vars */
3266 if (!strcmp(var->name, "end_sys_globals")) {
3267 parser->crc_globals = vec_size(parser->globals);
3270 else if (!strcmp(var->name, "end_sys_fields")) {
3271 parser->crc_fields = vec_size(parser->fields);
3274 if (was_end && var->expression.vtype == TYPE_FIELD) {
3275 if (parsewarning(parser, WARN_END_SYS_FIELDS,
3276 "global '%s' hint should not be a field",
3277 parser_tokval(parser)))
3284 if (!nofields && var->expression.vtype == TYPE_FIELD)
3286 /* deal with field declarations */
3287 old = parser_find_field(parser, var->name);
3289 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
3290 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
3299 parseerror(parser, "field `%s` already declared here: %s:%i",
3300 var->name, ast_ctx(old).file, ast_ctx(old).line);
3305 if (opts_standard == COMPILER_QCC &&
3306 (old = parser_find_global(parser, var->name)))
3308 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3309 parseerror(parser, "field `%s` already declared here: %s:%i",
3310 var->name, ast_ctx(old).file, ast_ctx(old).line);
3317 /* deal with other globals */
3318 old = parser_find_global(parser, var->name);
3319 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
3321 /* This is a function which had a prototype */
3322 if (!ast_istype(old, ast_value)) {
3323 parseerror(parser, "internal error: prototype is not an ast_value");
3327 proto = (ast_value*)old;
3328 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
3329 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
3331 ast_ctx(proto).file, ast_ctx(proto).line);
3335 /* we need the new parameter-names */
3336 for (i = 0; i < vec_size(proto->expression.params); ++i)
3337 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
3345 parseerror(parser, "global `%s` already declared here: %s:%i",
3346 var->name, ast_ctx(old).file, ast_ctx(old).line);
3350 if (opts_standard == COMPILER_QCC &&
3351 (old = parser_find_field(parser, var->name)))
3353 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3354 parseerror(parser, "global `%s` already declared here: %s:%i",
3355 var->name, ast_ctx(old).file, ast_ctx(old).line);
3362 else /* it's not a global */
3364 old = parser_find_local(parser, var->name, parser->blocklocal, &isparam);
3365 if (old && !isparam) {
3366 parseerror(parser, "local `%s` already declared here: %s:%i",
3367 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3371 old = parser_find_local(parser, var->name, 0, &isparam);
3372 if (old && isparam) {
3373 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
3374 "local `%s` is shadowing a parameter", var->name))
3376 parseerror(parser, "local `%s` already declared here: %s:%i",
3377 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3381 if (opts_standard != COMPILER_GMQCC) {
3390 * Create the global/local, and deal with vector types.
3393 if (var->expression.vtype == TYPE_VECTOR)
3395 else if (var->expression.vtype == TYPE_FIELD &&
3396 var->expression.next->expression.vtype == TYPE_VECTOR)
3400 if (!create_vector_members(var, ve)) {
3406 varent.name = util_strdup(var->name);
3407 varent.var = (ast_expression*)var;
3410 /* deal with global variables, fields, functions */
3411 if (!nofields && var->expression.vtype == TYPE_FIELD) {
3412 vec_push(parser->fields, varent);
3414 for (i = 0; i < 3; ++i)
3415 vec_push(parser->fields, ve[i]);
3419 vec_push(parser->globals, varent);
3421 for (i = 0; i < 3; ++i)
3422 vec_push(parser->globals, ve[i]);
3426 vec_push(parser->locals, varent);
3427 vec_push(localblock->locals, var);
3429 for (i = 0; i < 3; ++i) {
3430 vec_push(parser->locals, ve[i]);
3431 ast_block_collect(localblock, ve[i].var);
3432 ve[i].var = NULL; /* from here it's being collected in the block */
3438 ve[0].name = ve[1].name = ve[2].name = NULL;
3439 ve[0].var = ve[1].var = ve[2].var = NULL;
3445 if (var->expression.vtype == TYPE_ARRAY) {
3447 snprintf(name, sizeof(name), "%s##SET", var->name);
3448 if (!parser_create_array_setter(parser, var, name))
3450 snprintf(name, sizeof(name), "%s##GET", var->name);
3451 if (!parser_create_array_getter(parser, var, var->expression.next, name))
3454 else if (!localblock && !nofields &&
3455 var->expression.vtype == TYPE_FIELD &&
3456 var->expression.next->expression.vtype == TYPE_ARRAY)
3459 ast_expression *telem;
3461 ast_value *array = (ast_value*)var->expression.next;
3463 if (!ast_istype(var->expression.next, ast_value)) {
3464 parseerror(parser, "internal error: field element type must be an ast_value");
3468 snprintf(name, sizeof(name), "%s##SETF", var->name);
3469 if (!parser_create_array_field_setter(parser, array, name))
3472 telem = ast_type_copy(ast_ctx(var), array->expression.next);
3473 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
3474 tfield->expression.next = telem;
3475 snprintf(name, sizeof(name), "%s##GETFP", var->name);
3476 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
3484 if (parser->tok == ';') {
3485 ast_delete(basetype);
3486 if (!parser_next(parser)) {
3487 parseerror(parser, "error after variable declaration");
3493 if (parser->tok == ',')
3496 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
3497 parseerror(parser, "missing comma or semicolon while parsing variables");
3501 if (localblock && opts_standard == COMPILER_QCC) {
3502 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
3503 "initializing expression turns variable `%s` into a constant in this standard",
3510 if (parser->tok != '{') {
3511 if (parser->tok != '=') {
3512 parseerror(parser, "missing semicolon or initializer");
3516 if (!parser_next(parser)) {
3517 parseerror(parser, "error parsing initializer");
3521 else if (opts_standard == COMPILER_QCC) {
3522 parseerror(parser, "expected '=' before function body in this standard");
3525 if (parser->tok == '#') {
3529 parseerror(parser, "cannot declare builtins within functions");
3532 if (var->expression.vtype != TYPE_FUNCTION) {
3533 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
3536 if (!parser_next(parser)) {
3537 parseerror(parser, "expected builtin number");
3540 if (parser->tok != TOKEN_INTCONST) {
3541 parseerror(parser, "builtin number must be an integer constant");
3544 if (parser_token(parser)->constval.i <= 0) {
3545 parseerror(parser, "builtin number must be an integer greater than zero");
3549 func = ast_function_new(ast_ctx(var), var->name, var);
3551 parseerror(parser, "failed to allocate function for `%s`", var->name);
3554 vec_push(parser->functions, func);
3556 func->builtin = -parser_token(parser)->constval.i;
3558 if (!parser_next(parser)) {
3559 parseerror(parser, "expected comma or semicolon");
3560 ast_function_delete(func);
3561 var->constval.vfunc = NULL;
3565 else if (parser->tok == '{' || parser->tok == '[')
3568 parseerror(parser, "cannot declare functions within functions");
3572 if (!parse_function_body(parser, var))
3574 ast_delete(basetype);
3577 ast_expression *cexp;
3580 cexp = parse_expression_leave(parser, true);
3585 cval = (ast_value*)cexp;
3586 if (!ast_istype(cval, ast_value) || !cval->isconst)
3587 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
3590 var->isconst = true;
3591 if (cval->expression.vtype == TYPE_STRING)
3592 var->constval.vstring = parser_strdup(cval->constval.vstring);
3594 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
3598 shunt sy = { NULL, NULL };
3599 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
3600 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
3601 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
3602 if (!parser_sy_pop(parser, &sy))
3605 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
3606 parseerror(parser, "internal error: leaked operands");
3607 vec_push(localblock->exprs, (ast_expression*)sy.out[0].out);
3615 if (parser->tok == ',') {
3616 if (!parser_next(parser)) {
3617 parseerror(parser, "expected another variable");
3621 if (parser->tok != TOKEN_IDENT) {
3622 parseerror(parser, "expected another variable");
3625 var = ast_value_copy(basetype);
3627 ast_value_set_name(var, parser_tokval(parser));
3628 if (!parser_next(parser)) {
3629 parseerror(parser, "error parsing variable declaration");
3635 if (parser->tok != ';') {
3636 parseerror(parser, "missing semicolon after variables");
3640 if (!parser_next(parser)) {
3641 parseerror(parser, "parse error after variable declaration");
3645 ast_delete(basetype);
3649 if (cleanvar && var)
3651 ast_delete(basetype);
3655 ast_delete(basetype);
3656 if (cleanvar && var)
3658 if (varent.name) mem_d(varent.name);
3659 if (ve[0].name) mem_d(ve[0].name);
3660 if (ve[1].name) mem_d(ve[1].name);
3661 if (ve[2].name) mem_d(ve[2].name);
3662 if (ve[0].var) mem_d(ve[0].var);
3663 if (ve[1].var) mem_d(ve[1].var);
3664 if (ve[2].var) mem_d(ve[2].var);
3668 static bool parser_global_statement(parser_t *parser)
3670 if (parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3672 return parse_variable(parser, NULL, false);
3674 else if (parser->tok == TOKEN_KEYWORD)
3676 /* handle 'var' and 'const' */
3677 if (!strcmp(parser_tokval(parser), "var")) {
3678 if (!parser_next(parser)) {
3679 parseerror(parser, "expected variable declaration after 'var'");
3682 return parse_variable(parser, NULL, true);
3686 else if (parser->tok == '$')
3688 if (!parser_next(parser)) {
3689 parseerror(parser, "parse error");
3695 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
3701 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
3703 return util_crc16(old, str, strlen(str));
3706 static void progdefs_crc_file(const char *str)
3708 /* write to progdefs.h here */
3712 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
3714 old = progdefs_crc_sum(old, str);
3715 progdefs_crc_file(str);
3719 static void generate_checksum(parser_t *parser)
3721 uint16_t crc = 0xFFFF;
3724 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
3725 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
3727 progdefs_crc_file("\tint\tpad;\n");
3728 progdefs_crc_file("\tint\tofs_return[3];\n");
3729 progdefs_crc_file("\tint\tofs_parm0[3];\n");
3730 progdefs_crc_file("\tint\tofs_parm1[3];\n");
3731 progdefs_crc_file("\tint\tofs_parm2[3];\n");
3732 progdefs_crc_file("\tint\tofs_parm3[3];\n");
3733 progdefs_crc_file("\tint\tofs_parm4[3];\n");
3734 progdefs_crc_file("\tint\tofs_parm5[3];\n");
3735 progdefs_crc_file("\tint\tofs_parm6[3];\n");
3736 progdefs_crc_file("\tint\tofs_parm7[3];\n");
3738 for (i = 0; i < parser->crc_globals; ++i) {
3739 if (!ast_istype(parser->globals[i].var, ast_value))
3741 switch (parser->globals[i].var->expression.vtype) {
3742 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
3743 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
3744 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
3745 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
3747 crc = progdefs_crc_both(crc, "\tint\t");
3750 crc = progdefs_crc_both(crc, parser->globals[i].name);
3751 crc = progdefs_crc_both(crc, ";\n");
3753 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
3754 for (i = 0; i < parser->crc_fields; ++i) {
3755 if (!ast_istype(parser->fields[i].var, ast_value))
3757 switch (parser->fields[i].var->expression.next->expression.vtype) {
3758 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
3759 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
3760 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
3761 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
3763 crc = progdefs_crc_both(crc, "\tint\t");
3766 crc = progdefs_crc_both(crc, parser->fields[i].name);
3767 crc = progdefs_crc_both(crc, ";\n");
3769 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
3774 static parser_t *parser;
3779 parser = (parser_t*)mem_a(sizeof(parser_t));
3783 memset(parser, 0, sizeof(*parser));
3785 for (i = 0; i < operator_count; ++i) {
3786 if (operators[i].id == opid1('=')) {
3787 parser->assign_op = operators+i;
3791 if (!parser->assign_op) {
3792 printf("internal error: initializing parser: failed to find assign operator\n");
3799 bool parser_compile()
3801 /* initial lexer/parser state */
3802 parser->lex->flags.noops = true;
3804 if (parser_next(parser))
3806 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3808 if (!parser_global_statement(parser)) {
3809 if (parser->tok == TOKEN_EOF)
3810 parseerror(parser, "unexpected eof");
3811 else if (!parser->errors)
3812 parseerror(parser, "there have been errors, bailing out");
3813 lex_close(parser->lex);
3819 parseerror(parser, "parse error");
3820 lex_close(parser->lex);
3825 lex_close(parser->lex);
3828 return !parser->errors;
3831 bool parser_compile_file(const char *filename)
3833 parser->lex = lex_open(filename);
3835 con_err("failed to open file \"%s\"\n", filename);
3838 return parser_compile();
3841 bool parser_compile_string_len(const char *name, const char *str, size_t len)
3843 parser->lex = lex_open_string(str, len, name);
3845 con_err("failed to create lexer for string \"%s\"\n", name);
3848 return parser_compile();
3851 bool parser_compile_string(const char *name, const char *str)
3853 parser->lex = lex_open_string(str, strlen(str), name);
3855 con_err("failed to create lexer for string \"%s\"\n", name);
3858 return parser_compile();
3861 void parser_cleanup()
3864 for (i = 0; i < vec_size(parser->accessors); ++i) {
3865 ast_delete(parser->accessors[i]->constval.vfunc);
3866 parser->accessors[i]->constval.vfunc = NULL;
3867 ast_delete(parser->accessors[i]);
3869 for (i = 0; i < vec_size(parser->functions); ++i) {
3870 ast_delete(parser->functions[i]);
3872 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
3873 ast_delete(parser->imm_vector[i]);
3875 for (i = 0; i < vec_size(parser->imm_string); ++i) {
3876 ast_delete(parser->imm_string[i]);
3878 for (i = 0; i < vec_size(parser->imm_float); ++i) {
3879 ast_delete(parser->imm_float[i]);
3881 for (i = 0; i < vec_size(parser->fields); ++i) {
3882 ast_delete(parser->fields[i].var);
3883 mem_d(parser->fields[i].name);
3885 for (i = 0; i < vec_size(parser->globals); ++i) {
3886 ast_delete(parser->globals[i].var);
3887 mem_d(parser->globals[i].name);
3889 vec_free(parser->accessors);
3890 vec_free(parser->functions);
3891 vec_free(parser->imm_vector);
3892 vec_free(parser->imm_string);
3893 vec_free(parser->imm_float);
3894 vec_free(parser->globals);
3895 vec_free(parser->fields);
3896 vec_free(parser->locals);
3901 bool parser_finish(const char *output)
3907 if (!parser->errors)
3909 ir = ir_builder_new("gmqcc_out");
3911 con_out("failed to allocate builder\n");
3915 for (i = 0; i < vec_size(parser->fields); ++i) {
3918 if (!ast_istype(parser->fields[i].var, ast_value))
3920 field = (ast_value*)parser->fields[i].var;
3921 isconst = field->isconst;
3922 field->isconst = false;
3923 if (!ast_global_codegen((ast_value*)field, ir, true)) {
3924 con_out("failed to generate field %s\n", field->name);
3925 ir_builder_delete(ir);
3930 ast_expression *subtype;
3931 field->isconst = true;
3932 subtype = field->expression.next;
3933 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
3934 if (subtype->expression.vtype == TYPE_FIELD)
3935 ifld->fieldtype = subtype->expression.next->expression.vtype;
3936 else if (subtype->expression.vtype == TYPE_FUNCTION)
3937 ifld->outtype = subtype->expression.next->expression.vtype;
3938 (void)!ir_value_set_field(field->ir_v, ifld);
3941 for (i = 0; i < vec_size(parser->globals); ++i) {
3943 if (!ast_istype(parser->globals[i].var, ast_value))
3945 asvalue = (ast_value*)(parser->globals[i].var);
3946 if (!asvalue->uses && !asvalue->isconst && asvalue->expression.vtype != TYPE_FUNCTION) {
3947 if (strcmp(asvalue->name, "end_sys_globals") &&
3948 strcmp(asvalue->name, "end_sys_fields"))
3950 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
3951 "unused global: `%s`", asvalue->name);
3954 if (!ast_global_codegen(asvalue, ir, false)) {
3955 con_out("failed to generate global %s\n", parser->globals[i].name);
3956 ir_builder_delete(ir);
3960 for (i = 0; i < vec_size(parser->imm_float); ++i) {
3961 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
3962 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
3963 ir_builder_delete(ir);
3967 for (i = 0; i < vec_size(parser->imm_string); ++i) {
3968 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
3969 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
3970 ir_builder_delete(ir);
3974 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
3975 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
3976 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
3977 ir_builder_delete(ir);
3981 for (i = 0; i < vec_size(parser->globals); ++i) {
3983 if (!ast_istype(parser->globals[i].var, ast_value))
3985 asvalue = (ast_value*)(parser->globals[i].var);
3986 if (asvalue->setter) {
3987 if (!ast_global_codegen(asvalue->setter, ir, false) ||
3988 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
3989 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
3991 printf("failed to generate setter for %s\n", parser->globals[i].name);
3992 ir_builder_delete(ir);
3996 if (asvalue->getter) {
3997 if (!ast_global_codegen(asvalue->getter, ir, false) ||
3998 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
3999 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
4001 printf("failed to generate getter for %s\n", parser->globals[i].name);
4002 ir_builder_delete(ir);
4007 for (i = 0; i < vec_size(parser->fields); ++i) {
4009 asvalue = (ast_value*)(parser->fields[i].var->expression.next);
4011 if (!ast_istype((ast_expression*)asvalue, ast_value))
4013 if (asvalue->expression.vtype != TYPE_ARRAY)
4015 if (asvalue->setter) {
4016 if (!ast_global_codegen(asvalue->setter, ir, false) ||
4017 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
4018 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
4020 printf("failed to generate setter for %s\n", parser->fields[i].name);
4021 ir_builder_delete(ir);
4025 if (asvalue->getter) {
4026 if (!ast_global_codegen(asvalue->getter, ir, false) ||
4027 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
4028 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
4030 printf("failed to generate getter for %s\n", parser->fields[i].name);
4031 ir_builder_delete(ir);
4036 for (i = 0; i < vec_size(parser->functions); ++i) {
4037 if (!ast_function_codegen(parser->functions[i], ir)) {
4038 con_out("failed to generate function %s\n", parser->functions[i]->name);
4039 ir_builder_delete(ir);
4044 ir_builder_dump(ir, con_out);
4045 for (i = 0; i < vec_size(parser->functions); ++i) {
4046 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4047 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4048 ir_builder_delete(ir);
4055 ir_builder_dump(ir, con_out);
4057 generate_checksum(parser);
4059 if (!ir_builder_generate(ir, output)) {
4060 con_out("*** failed to generate output file\n");
4061 ir_builder_delete(ir);
4066 ir_builder_delete(ir);
4070 con_out("*** there were compile errors\n");