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]);
978 parseerror(parser, "failed to apply operand %s", op->op);
982 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
983 vec_push(sy->out, syexp(ctx, out));
987 static bool parser_close_call(parser_t *parser, shunt *sy)
989 /* was a function call */
996 vec_shrinkby(sy->ops, 1);
997 fid = sy->ops[vec_size(sy->ops)].off;
999 /* out[fid] is the function
1000 * everything above is parameters...
1001 * 0 params = nothing
1002 * 1 params = ast_expression
1006 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1007 parseerror(parser, "internal error: function call needs function and parameter list...");
1011 fun = sy->out[fid].out;
1013 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1015 parseerror(parser, "out of memory");
1019 if (fid+1 == vec_size(sy->out)) {
1022 } else if (fid+2 == vec_size(sy->out)) {
1024 vec_shrinkby(sy->out, 1);
1025 params = sy->out[vec_size(sy->out)].block;
1029 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1031 paramcount = vec_size(params->exprs);
1032 call->params = params->exprs;
1033 params->exprs = NULL;
1036 if (!ast_call_check_types(call))
1039 parseerror(parser, "invalid function call");
1043 /* overwrite fid, the function, with a call */
1044 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1046 if (fun->expression.vtype != TYPE_FUNCTION) {
1047 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1051 if (!fun->expression.next) {
1052 parseerror(parser, "could not determine function return type");
1055 if (vec_size(fun->expression.params) != paramcount &&
1056 !(fun->expression.variadic &&
1057 vec_size(fun->expression.params) < paramcount))
1060 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1062 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1063 if (opts_standard == COMPILER_GMQCC)
1066 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1067 " -> `%s` has been declared here: %s:%i",
1068 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1069 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1071 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1072 " -> `%s` has been declared here: %s:%i",
1073 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1074 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1080 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1081 "too %s parameters for call to %s: expected %i, got %i\n"
1082 " -> `%s` has been declared here: %s:%i",
1083 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1084 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1086 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1087 "too %s parameters for function call: expected %i, got %i\n"
1088 " -> `%s` has been declared here: %s:%i",
1089 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1090 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1098 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1100 if (!vec_size(sy->ops)) {
1101 parseerror(parser, "unmatched closing paren");
1104 /* this would for bit a + (x) because there are no operators inside (x)
1105 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1106 parseerror(parser, "empty parenthesis expression");
1110 while (vec_size(sy->ops)) {
1111 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1112 if (!parser_close_call(parser, sy))
1116 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1117 vec_shrinkby(sy->ops, 1);
1118 return !functions_only;
1120 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1123 /* pop off the parenthesis */
1124 vec_shrinkby(sy->ops, 1);
1125 /* then apply the index operator */
1126 if (!parser_sy_pop(parser, sy))
1130 if (!parser_sy_pop(parser, sy))
1136 static void parser_reclassify_token(parser_t *parser)
1139 for (i = 0; i < operator_count; ++i) {
1140 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1141 parser->tok = TOKEN_OPERATOR;
1147 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1149 ast_expression *expr = NULL;
1151 bool wantop = false;
1152 bool gotmemberof = false;
1154 /* count the parens because an if starts with one, so the
1155 * end of a condition is an unmatched closing paren
1163 parser->lex->flags.noops = false;
1165 parser_reclassify_token(parser);
1170 gotmemberof = false;
1172 parser->memberof = 0;
1174 if (parser->tok == TOKEN_IDENT)
1176 ast_expression *var;
1178 parseerror(parser, "expected operator or end of statement");
1183 if (opts_standard == COMPILER_GMQCC)
1185 if (parser->memberof == TYPE_ENTITY) {
1186 /* still get vars first since there could be a fieldpointer */
1187 var = parser_find_var(parser, parser_tokval(parser));
1189 var = parser_find_field(parser, parser_tokval(parser));
1191 else if (parser->memberof == TYPE_VECTOR)
1193 parseerror(parser, "TODO: implement effective vector member access");
1196 else if (parser->memberof) {
1197 parseerror(parser, "namespace for member not found");
1201 var = parser_find_var(parser, parser_tokval(parser));
1203 var = parser_find_var(parser, parser_tokval(parser));
1205 var = parser_find_field(parser, parser_tokval(parser));
1208 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1211 if (ast_istype(var, ast_value))
1212 ((ast_value*)var)->uses++;
1213 vec_push(sy.out, syexp(parser_ctx(parser), var));
1214 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1216 else if (parser->tok == TOKEN_FLOATCONST) {
1219 parseerror(parser, "expected operator or end of statement, got constant");
1223 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1226 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1227 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1229 else if (parser->tok == TOKEN_INTCONST) {
1232 parseerror(parser, "expected operator or end of statement, got constant");
1236 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1239 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1240 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1242 else if (parser->tok == TOKEN_STRINGCONST) {
1245 parseerror(parser, "expected operator or end of statement, got constant");
1249 val = parser_const_string(parser, parser_tokval(parser));
1252 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1253 DEBUGSHUNTDO(con_out("push string\n"));
1255 else if (parser->tok == TOKEN_VECTORCONST) {
1258 parseerror(parser, "expected operator or end of statement, got constant");
1262 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1265 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1266 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1267 parser_token(parser)->constval.v.x,
1268 parser_token(parser)->constval.v.y,
1269 parser_token(parser)->constval.v.z));
1271 else if (parser->tok == '(') {
1272 parseerror(parser, "internal error: '(' should be classified as operator");
1275 else if (parser->tok == '[') {
1276 parseerror(parser, "internal error: '[' should be classified as operator");
1279 else if (parser->tok == ')') {
1281 DEBUGSHUNTDO(con_out("do[op] )\n"));
1285 /* we do expect an operator next */
1286 /* closing an opening paren */
1287 if (!parser_close_paren(parser, &sy, false))
1290 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1294 /* allowed for function calls */
1295 if (!parser_close_paren(parser, &sy, true))
1300 else if (parser->tok == ']') {
1302 parseerror(parser, "operand expected");
1306 if (!parser_close_paren(parser, &sy, false))
1310 else if (parser->tok != TOKEN_OPERATOR) {
1312 parseerror(parser, "expected operator or end of statement");
1319 /* classify the operator */
1320 const oper_info *op;
1321 const oper_info *olast = NULL;
1323 for (o = 0; o < operator_count; ++o) {
1324 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1325 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1326 !strcmp(parser_tokval(parser), operators[o].op))
1331 if (o == operator_count) {
1332 /* no operator found... must be the end of the statement */
1335 /* found an operator */
1338 /* when declaring variables, a comma starts a new variable */
1339 if (op->id == opid1(',') && !parens && stopatcomma) {
1340 /* fixup the token */
1345 /* a colon without a pervious question mark cannot be a ternary */
1346 if (!ternaries && op->id == opid2(':','?')) {
1351 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1352 olast = &operators[vec_last(sy.ops).etype-1];
1355 (op->prec < olast->prec) ||
1356 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1358 if (!parser_sy_pop(parser, &sy))
1360 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1361 olast = &operators[vec_last(sy.ops).etype-1];
1366 if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) {
1367 /* for gmqcc standard: open up the namespace of the previous type */
1368 ast_expression *prevex = vec_last(sy.out).out;
1370 parseerror(parser, "unexpected member operator");
1373 if (prevex->expression.vtype == TYPE_ENTITY)
1374 parser->memberof = TYPE_ENTITY;
1375 else if (prevex->expression.vtype == TYPE_VECTOR)
1376 parser->memberof = TYPE_VECTOR;
1378 parseerror(parser, "type error: type has no members");
1384 if (op->id == opid1('(')) {
1386 size_t sycount = vec_size(sy.out);
1387 DEBUGSHUNTDO(con_out("push [op] (\n"));
1389 /* we expected an operator, this is the function-call operator */
1390 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1393 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1394 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1397 } else if (op->id == opid1('[')) {
1399 parseerror(parser, "unexpected array subscript");
1403 /* push both the operator and the paren, this makes life easier */
1404 vec_push(sy.ops, syop(parser_ctx(parser), op));
1405 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1407 } else if (op->id == opid2('?',':')) {
1409 vec_push(sy.ops, syop(parser_ctx(parser), op));
1412 } else if (op->id == opid2(':','?')) {
1413 /* we don't push this operator */
1417 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1418 vec_push(sy.ops, syop(parser_ctx(parser), op));
1419 wantop = !!(op->flags & OP_SUFFIX);
1422 if (!parser_next(parser)) {
1425 if (parser->tok == ';' ||
1426 (!parens && parser->tok == ']'))
1432 while (vec_size(sy.ops)) {
1433 if (!parser_sy_pop(parser, &sy))
1437 parser->lex->flags.noops = true;
1438 if (!vec_size(sy.out)) {
1439 parseerror(parser, "empty expression");
1442 expr = sy.out[0].out;
1445 DEBUGSHUNTDO(con_out("shunt done\n"));
1449 parser->lex->flags.noops = true;
1455 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1457 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1460 if (!parser_next(parser)) {
1467 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1470 ast_expression *cond, *ontrue, *onfalse = NULL;
1473 lex_ctx ctx = parser_ctx(parser);
1475 (void)block; /* not touching */
1477 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1478 if (!parser_next(parser)) {
1479 parseerror(parser, "expected condition or 'not'");
1482 if (parser->tok == TOKEN_KEYWORD && !strcmp(parser_tokval(parser), "not")) {
1484 if (!parser_next(parser)) {
1485 parseerror(parser, "expected condition in parenthesis");
1489 if (parser->tok != '(') {
1490 parseerror(parser, "expected 'if' condition in parenthesis");
1493 /* parse into the expression */
1494 if (!parser_next(parser)) {
1495 parseerror(parser, "expected 'if' condition after opening paren");
1498 /* parse the condition */
1499 cond = parse_expression_leave(parser, false);
1503 if (parser->tok != ')') {
1504 parseerror(parser, "expected closing paren after 'if' condition");
1508 /* parse into the 'then' branch */
1509 if (!parser_next(parser)) {
1510 parseerror(parser, "expected statement for on-true branch of 'if'");
1514 ontrue = parse_statement_or_block(parser);
1519 /* check for an else */
1520 if (!strcmp(parser_tokval(parser), "else")) {
1521 /* parse into the 'else' branch */
1522 if (!parser_next(parser)) {
1523 parseerror(parser, "expected on-false branch after 'else'");
1528 onfalse = parse_statement_or_block(parser);
1537 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
1539 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1540 *out = (ast_expression*)ifthen;
1544 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1547 ast_expression *cond, *ontrue;
1549 lex_ctx ctx = parser_ctx(parser);
1551 (void)block; /* not touching */
1553 /* skip the 'while' and check for opening paren */
1554 if (!parser_next(parser) || parser->tok != '(') {
1555 parseerror(parser, "expected 'while' condition in parenthesis");
1558 /* parse into the expression */
1559 if (!parser_next(parser)) {
1560 parseerror(parser, "expected 'while' condition after opening paren");
1563 /* parse the condition */
1564 cond = parse_expression_leave(parser, false);
1568 if (parser->tok != ')') {
1569 parseerror(parser, "expected closing paren after 'while' condition");
1573 /* parse into the 'then' branch */
1574 if (!parser_next(parser)) {
1575 parseerror(parser, "expected while-loop body");
1579 ontrue = parse_statement_or_block(parser);
1585 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1586 *out = (ast_expression*)aloop;
1590 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1593 ast_expression *cond, *ontrue;
1595 lex_ctx ctx = parser_ctx(parser);
1597 (void)block; /* not touching */
1599 /* skip the 'do' and get the body */
1600 if (!parser_next(parser)) {
1601 parseerror(parser, "expected loop body");
1604 ontrue = parse_statement_or_block(parser);
1608 /* expect the "while" */
1609 if (parser->tok != TOKEN_KEYWORD ||
1610 strcmp(parser_tokval(parser), "while"))
1612 parseerror(parser, "expected 'while' and condition");
1617 /* skip the 'while' and check for opening paren */
1618 if (!parser_next(parser) || parser->tok != '(') {
1619 parseerror(parser, "expected 'while' condition in parenthesis");
1623 /* parse into the expression */
1624 if (!parser_next(parser)) {
1625 parseerror(parser, "expected 'while' condition after opening paren");
1629 /* parse the condition */
1630 cond = parse_expression_leave(parser, false);
1634 if (parser->tok != ')') {
1635 parseerror(parser, "expected closing paren after 'while' condition");
1641 if (!parser_next(parser) || parser->tok != ';') {
1642 parseerror(parser, "expected semicolon after condition");
1648 if (!parser_next(parser)) {
1649 parseerror(parser, "parse error");
1655 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1656 *out = (ast_expression*)aloop;
1660 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1663 ast_expression *initexpr, *cond, *increment, *ontrue;
1664 size_t oldblocklocal;
1667 lex_ctx ctx = parser_ctx(parser);
1669 oldblocklocal = parser->blocklocal;
1670 parser->blocklocal = vec_size(parser->locals);
1677 /* skip the 'while' and check for opening paren */
1678 if (!parser_next(parser) || parser->tok != '(') {
1679 parseerror(parser, "expected 'for' expressions in parenthesis");
1682 /* parse into the expression */
1683 if (!parser_next(parser)) {
1684 parseerror(parser, "expected 'for' initializer after opening paren");
1688 if (parser->tok == TOKEN_TYPENAME) {
1689 if (opts_standard != COMPILER_GMQCC) {
1690 if (parsewarning(parser, WARN_EXTENSIONS,
1691 "current standard does not allow variable declarations in for-loop initializers"))
1695 parseerror(parser, "TODO: assignment of new variables to be non-const");
1697 if (!parse_variable(parser, block, true))
1700 else if (parser->tok != ';')
1702 initexpr = parse_expression_leave(parser, false);
1707 /* move on to condition */
1708 if (parser->tok != ';') {
1709 parseerror(parser, "expected semicolon after for-loop initializer");
1712 if (!parser_next(parser)) {
1713 parseerror(parser, "expected for-loop condition");
1717 /* parse the condition */
1718 if (parser->tok != ';') {
1719 cond = parse_expression_leave(parser, false);
1724 /* move on to incrementor */
1725 if (parser->tok != ';') {
1726 parseerror(parser, "expected semicolon after for-loop initializer");
1729 if (!parser_next(parser)) {
1730 parseerror(parser, "expected for-loop condition");
1734 /* parse the incrementor */
1735 if (parser->tok != ')') {
1736 increment = parse_expression_leave(parser, false);
1739 if (!ast_istype(increment, ast_store) &&
1740 !ast_istype(increment, ast_call) &&
1741 !ast_istype(increment, ast_binstore))
1743 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
1749 if (parser->tok != ')') {
1750 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1753 /* parse into the 'then' branch */
1754 if (!parser_next(parser)) {
1755 parseerror(parser, "expected for-loop body");
1758 ontrue = parse_statement_or_block(parser);
1763 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1764 *out = (ast_expression*)aloop;
1766 while (vec_size(parser->locals) > parser->blocklocal)
1767 retval = retval && parser_pop_local(parser);
1768 parser->blocklocal = oldblocklocal;
1771 if (initexpr) ast_delete(initexpr);
1772 if (cond) ast_delete(cond);
1773 if (increment) ast_delete(increment);
1774 while (vec_size(parser->locals) > parser->blocklocal)
1775 (void)!parser_pop_local(parser);
1776 parser->blocklocal = oldblocklocal;
1780 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
1782 ast_expression *exp = NULL;
1783 ast_return *ret = NULL;
1784 ast_value *expected = parser->function->vtype;
1786 (void)block; /* not touching */
1788 if (!parser_next(parser)) {
1789 parseerror(parser, "expected return expression");
1793 if (parser->tok != ';') {
1794 exp = parse_expression(parser, false);
1798 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
1799 parseerror(parser, "return with invalid expression");
1802 ret = ast_return_new(exp->expression.node.context, exp);
1808 if (!parser_next(parser))
1809 parseerror(parser, "parse error");
1810 if (expected->expression.next->expression.vtype != TYPE_VOID) {
1811 if (opts_standard != COMPILER_GMQCC)
1812 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
1814 parseerror(parser, "return without value");
1816 ret = ast_return_new(parser_ctx(parser), NULL);
1818 *out = (ast_expression*)ret;
1822 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
1824 lex_ctx ctx = parser_ctx(parser);
1826 (void)block; /* not touching */
1828 if (!parser_next(parser) || parser->tok != ';') {
1829 parseerror(parser, "expected semicolon");
1833 if (!parser_next(parser))
1834 parseerror(parser, "parse error");
1836 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
1840 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
1842 ast_expression *operand;
1844 ast_switch *switchnode;
1845 ast_switch_case swcase;
1847 lex_ctx ctx = parser_ctx(parser);
1849 (void)block; /* not touching */
1851 /* parse over the opening paren */
1852 if (!parser_next(parser) || parser->tok != '(') {
1853 parseerror(parser, "expected switch operand in parenthesis");
1857 /* parse into the expression */
1858 if (!parser_next(parser)) {
1859 parseerror(parser, "expected switch operand");
1862 /* parse the operand */
1863 operand = parse_expression_leave(parser, false);
1867 if (!OPTS_FLAG(RELAXED_SWITCH)) {
1868 opval = (ast_value*)operand;
1869 if (!ast_istype(operand, ast_value) || !opval->isconst) {
1870 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
1876 switchnode = ast_switch_new(ctx, operand);
1879 if (parser->tok != ')') {
1880 ast_delete(switchnode);
1881 parseerror(parser, "expected closing paren after 'switch' operand");
1885 /* parse over the opening paren */
1886 if (!parser_next(parser) || parser->tok != '{') {
1887 ast_delete(switchnode);
1888 parseerror(parser, "expected list of cases");
1892 if (!parser_next(parser)) {
1893 ast_delete(switchnode);
1894 parseerror(parser, "expected 'case' or 'default'");
1899 while (parser->tok != '}') {
1900 ast_block *caseblock;
1902 if (parser->tok != TOKEN_KEYWORD) {
1903 ast_delete(switchnode);
1904 parseerror(parser, "expected 'case' or 'default'");
1907 if (!strcmp(parser_tokval(parser), "case")) {
1908 if (!parser_next(parser)) {
1909 ast_delete(switchnode);
1910 parseerror(parser, "expected expression for case");
1913 swcase.value = parse_expression_leave(parser, false);
1914 if (!swcase.value) {
1915 ast_delete(switchnode);
1916 parseerror(parser, "expected expression for case");
1920 else if (!strcmp(parser_tokval(parser), "default")) {
1921 swcase.value = NULL;
1922 if (!parser_next(parser)) {
1923 ast_delete(switchnode);
1924 parseerror(parser, "expected colon");
1929 /* Now the colon and body */
1930 if (parser->tok != ':') {
1931 if (swcase.value) ast_unref(swcase.value);
1932 ast_delete(switchnode);
1933 parseerror(parser, "expected colon");
1937 if (!parser_next(parser)) {
1938 if (swcase.value) ast_unref(swcase.value);
1939 ast_delete(switchnode);
1940 parseerror(parser, "expected statements or case");
1943 caseblock = ast_block_new(parser_ctx(parser));
1945 if (swcase.value) ast_unref(swcase.value);
1946 ast_delete(switchnode);
1949 swcase.code = (ast_expression*)caseblock;
1950 vec_push(switchnode->cases, swcase);
1952 ast_expression *expr;
1953 if (parser->tok == '}')
1955 if (parser->tok == TOKEN_KEYWORD) {
1956 if (!strcmp(parser_tokval(parser), "case") ||
1957 !strcmp(parser_tokval(parser), "default"))
1962 if (!parse_statement(parser, caseblock, &expr, true)) {
1963 ast_delete(switchnode);
1968 vec_push(caseblock->exprs, expr);
1973 if (parser->tok != '}') {
1974 ast_delete(switchnode);
1975 parseerror(parser, "expected closing paren of case list");
1978 if (!parser_next(parser)) {
1979 ast_delete(switchnode);
1980 parseerror(parser, "parse error after switch");
1983 *out = (ast_expression*)switchnode;
1987 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
1989 if (parser->tok == TOKEN_TYPENAME || parser->tok == '.')
1991 /* local variable */
1993 parseerror(parser, "cannot declare a variable from here");
1996 if (opts_standard == COMPILER_QCC) {
1997 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2000 if (!parse_variable(parser, block, false))
2005 else if (parser->tok == TOKEN_KEYWORD)
2007 if (!strcmp(parser_tokval(parser), "local"))
2010 parseerror(parser, "cannot declare a local variable here");
2013 if (!parser_next(parser)) {
2014 parseerror(parser, "expected variable declaration");
2017 if (!parse_variable(parser, block, true))
2022 else if (!strcmp(parser_tokval(parser), "return"))
2024 return parse_return(parser, block, out);
2026 else if (!strcmp(parser_tokval(parser), "if"))
2028 return parse_if(parser, block, out);
2030 else if (!strcmp(parser_tokval(parser), "while"))
2032 return parse_while(parser, block, out);
2034 else if (!strcmp(parser_tokval(parser), "do"))
2036 return parse_dowhile(parser, block, out);
2038 else if (!strcmp(parser_tokval(parser), "for"))
2040 if (opts_standard == COMPILER_QCC) {
2041 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2044 return parse_for(parser, block, out);
2046 else if (!strcmp(parser_tokval(parser), "break"))
2048 return parse_break_continue(parser, block, out, false);
2050 else if (!strcmp(parser_tokval(parser), "continue"))
2052 return parse_break_continue(parser, block, out, true);
2054 else if (!strcmp(parser_tokval(parser), "switch"))
2056 return parse_switch(parser, block, out);
2058 else if (!strcmp(parser_tokval(parser), "case") ||
2059 !strcmp(parser_tokval(parser), "default"))
2062 parseerror(parser, "unexpected 'case' label");
2067 parseerror(parser, "Unexpected keyword");
2070 else if (parser->tok == '{')
2073 inner = parse_block(parser, false);
2076 *out = (ast_expression*)inner;
2081 ast_expression *exp = parse_expression(parser, false);
2085 if (!ast_istype(exp, ast_store) &&
2086 !ast_istype(exp, ast_call) &&
2087 !ast_istype(exp, ast_binstore))
2089 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2096 static bool GMQCC_WARN parser_pop_local(parser_t *parser)
2101 ve = &vec_last(parser->locals);
2102 if (!parser->errors) {
2103 if (ast_istype(ve->var, ast_value) && !(((ast_value*)(ve->var))->uses)) {
2104 if (parsewarning(parser, WARN_UNUSED_VARIABLE, "unused variable: `%s`", ve->name))
2109 vec_pop(parser->locals);
2113 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn)
2115 size_t oldblocklocal;
2118 oldblocklocal = parser->blocklocal;
2119 parser->blocklocal = vec_size(parser->locals);
2121 if (!parser_next(parser)) { /* skip the '{' */
2122 parseerror(parser, "expected function body");
2126 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2128 ast_expression *expr;
2129 if (parser->tok == '}')
2132 if (!parse_statement(parser, block, &expr, false)) {
2133 /* parseerror(parser, "parse error"); */
2139 vec_push(block->exprs, expr);
2142 if (parser->tok != '}') {
2145 if (warnreturn && parser->function->vtype->expression.next->expression.vtype != TYPE_VOID)
2147 if (!vec_size(block->exprs) ||
2148 !ast_istype(vec_last(block->exprs), ast_return))
2150 if (parsewarning(parser, WARN_MISSING_RETURN_VALUES, "control reaches end of non-void function")) {
2156 (void)parser_next(parser);
2160 while (vec_size(parser->locals) > parser->blocklocal)
2161 retval = retval && parser_pop_local(parser);
2162 parser->blocklocal = oldblocklocal;
2166 static ast_block* parse_block(parser_t *parser, bool warnreturn)
2169 block = ast_block_new(parser_ctx(parser));
2172 if (!parse_block_into(parser, block, warnreturn)) {
2173 ast_block_delete(block);
2179 static ast_expression* parse_statement_or_block(parser_t *parser)
2181 ast_expression *expr = NULL;
2182 if (parser->tok == '{')
2183 return (ast_expression*)parse_block(parser, false);
2184 if (!parse_statement(parser, NULL, &expr, false))
2190 static bool create_vector_members(ast_value *var, varentry_t *ve)
2193 size_t len = strlen(var->name);
2195 for (i = 0; i < 3; ++i) {
2196 ve[i].var = (ast_expression*)ast_member_new(ast_ctx(var), (ast_expression*)var, i);
2200 ve[i].name = (char*)mem_a(len+3);
2202 ast_delete(ve[i].var);
2206 memcpy(ve[i].name, var->name, len);
2207 ve[i].name[len] = '_';
2208 ve[i].name[len+1] = 'x'+i;
2209 ve[i].name[len+2] = 0;
2218 ast_delete(ve[i].var);
2225 static bool parse_function_body(parser_t *parser, ast_value *var)
2227 ast_block *block = NULL;
2232 ast_expression *framenum = NULL;
2233 ast_expression *nextthink = NULL;
2234 /* None of the following have to be deleted */
2235 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2236 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2237 bool has_frame_think;
2241 has_frame_think = false;
2242 old = parser->function;
2244 if (var->expression.variadic) {
2245 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2246 "variadic function with implementation will not be able to access additional parameters"))
2252 if (parser->tok == '[') {
2253 /* got a frame definition: [ framenum, nextthink ]
2254 * this translates to:
2255 * self.frame = framenum;
2256 * self.nextthink = time + 0.1;
2257 * self.think = nextthink;
2261 fld_think = parser_find_field(parser, "think");
2262 fld_nextthink = parser_find_field(parser, "nextthink");
2263 fld_frame = parser_find_field(parser, "frame");
2264 if (!fld_think || !fld_nextthink || !fld_frame) {
2265 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2266 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2269 gbl_time = parser_find_global(parser, "time");
2270 gbl_self = parser_find_global(parser, "self");
2271 if (!gbl_time || !gbl_self) {
2272 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2273 parseerror(parser, "please declare the following globals: `time`, `self`");
2277 if (!parser_next(parser))
2280 framenum = parse_expression_leave(parser, true);
2282 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2285 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->isconst) {
2286 ast_unref(framenum);
2287 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2291 if (parser->tok != ',') {
2292 ast_unref(framenum);
2293 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2294 parseerror(parser, "Got a %i\n", parser->tok);
2298 if (!parser_next(parser)) {
2299 ast_unref(framenum);
2303 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2305 /* qc allows the use of not-yet-declared functions here
2306 * - this automatically creates a prototype */
2308 ast_value *thinkfunc;
2309 ast_expression *functype = fld_think->expression.next;
2311 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2312 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2313 ast_unref(framenum);
2314 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2318 if (!parser_next(parser)) {
2319 ast_unref(framenum);
2320 ast_delete(thinkfunc);
2324 varent.var = (ast_expression*)thinkfunc;
2325 varent.name = util_strdup(thinkfunc->name);
2326 vec_push(parser->globals, varent);
2327 nextthink = (ast_expression*)thinkfunc;
2330 nextthink = parse_expression_leave(parser, true);
2332 ast_unref(framenum);
2333 parseerror(parser, "expected a think-function in [frame,think] notation");
2338 if (!ast_istype(nextthink, ast_value)) {
2339 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2343 if (retval && parser->tok != ']') {
2344 parseerror(parser, "expected closing `]` for [frame,think] notation");
2348 if (retval && !parser_next(parser)) {
2352 if (retval && parser->tok != '{') {
2353 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2358 ast_unref(nextthink);
2359 ast_unref(framenum);
2363 has_frame_think = true;
2366 block = ast_block_new(parser_ctx(parser));
2368 parseerror(parser, "failed to allocate block");
2369 if (has_frame_think) {
2370 ast_unref(nextthink);
2371 ast_unref(framenum);
2376 if (has_frame_think) {
2378 ast_expression *self_frame;
2379 ast_expression *self_nextthink;
2380 ast_expression *self_think;
2381 ast_expression *time_plus_1;
2382 ast_store *store_frame;
2383 ast_store *store_nextthink;
2384 ast_store *store_think;
2386 ctx = parser_ctx(parser);
2387 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2388 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2389 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2391 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2392 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2394 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
2395 if (self_frame) ast_delete(self_frame);
2396 if (self_nextthink) ast_delete(self_nextthink);
2397 if (self_think) ast_delete(self_think);
2398 if (time_plus_1) ast_delete(time_plus_1);
2404 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
2405 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
2406 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
2409 ast_delete(self_frame);
2412 if (!store_nextthink) {
2413 ast_delete(self_nextthink);
2417 ast_delete(self_think);
2421 if (store_frame) ast_delete(store_frame);
2422 if (store_nextthink) ast_delete(store_nextthink);
2423 if (store_think) ast_delete(store_think);
2426 vec_push(block->exprs, (ast_expression*)store_frame);
2427 vec_push(block->exprs, (ast_expression*)store_nextthink);
2428 vec_push(block->exprs, (ast_expression*)store_think);
2432 parseerror(parser, "failed to generate code for [frame,think]");
2433 ast_unref(nextthink);
2434 ast_unref(framenum);
2440 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
2443 ast_value *param = var->expression.params[parami];
2445 if (param->expression.vtype != TYPE_VECTOR &&
2446 (param->expression.vtype != TYPE_FIELD ||
2447 param->expression.next->expression.vtype != TYPE_VECTOR))
2452 if (!create_vector_members(param, ve)) {
2453 ast_block_delete(block);
2457 for (e = 0; e < 3; ++e) {
2458 vec_push(parser->locals, ve[e]);
2459 ast_block_collect(block, ve[e].var);
2460 ve[e].var = NULL; /* collected */
2464 func = ast_function_new(ast_ctx(var), var->name, var);
2466 parseerror(parser, "failed to allocate function for `%s`", var->name);
2467 ast_block_delete(block);
2470 vec_push(parser->functions, func);
2472 parser->function = func;
2473 if (!parse_block_into(parser, block, true)) {
2474 ast_block_delete(block);
2478 vec_push(func->blocks, block);
2480 parser->function = old;
2481 while (vec_size(parser->locals))
2482 retval = retval && parser_pop_local(parser);
2484 if (parser->tok == ';')
2485 return parser_next(parser);
2486 else if (opts_standard == COMPILER_QCC)
2487 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
2491 vec_pop(parser->functions);
2492 ast_function_delete(func);
2493 var->constval.vfunc = NULL;
2496 while (vec_size(parser->locals)) {
2497 mem_d(vec_last(parser->locals).name);
2498 vec_pop(parser->locals);
2500 parser->function = old;
2504 static ast_expression *array_accessor_split(
2509 ast_expression *left,
2510 ast_expression *right
2516 lex_ctx ctx = ast_ctx(array);
2518 if (!left || !right) {
2519 if (left) ast_delete(left);
2520 if (right) ast_delete(right);
2524 cmp = ast_binary_new(ctx, INSTR_LT,
2525 (ast_expression*)index,
2526 (ast_expression*)parser_const_float(parser, middle));
2530 parseerror(parser, "internal error: failed to create comparison for array setter");
2534 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
2536 ast_delete(cmp); /* will delete left and right */
2537 parseerror(parser, "internal error: failed to create conditional jump for array setter");
2541 return (ast_expression*)ifthen;
2544 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
2546 lex_ctx ctx = ast_ctx(array);
2548 if (from+1 == afterend) {
2549 /* set this value */
2552 ast_array_index *subscript;
2554 int assignop = type_store_instr[value->expression.vtype];
2556 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2557 assignop = INSTR_STORE_V;
2559 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2563 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
2565 ast_delete(subscript);
2569 block = ast_block_new(ctx);
2575 vec_push(block->exprs, (ast_expression*)st);
2577 ret = ast_return_new(ctx, NULL);
2583 vec_push(block->exprs, (ast_expression*)ret);
2585 return (ast_expression*)block;
2587 ast_expression *left, *right;
2588 size_t diff = afterend - from;
2589 size_t middle = from + diff/2;
2590 left = array_setter_node(parser, array, index, value, from, middle);
2591 right = array_setter_node(parser, array, index, value, middle, afterend);
2592 return array_accessor_split(parser, array, index, middle, left, right);
2596 static ast_expression *array_field_setter_node(
2605 lex_ctx ctx = ast_ctx(array);
2607 if (from+1 == afterend) {
2608 /* set this value */
2611 ast_entfield *entfield;
2612 ast_array_index *subscript;
2614 int assignop = type_storep_instr[value->expression.vtype];
2616 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2617 assignop = INSTR_STOREP_V;
2619 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2623 entfield = ast_entfield_new_force(ctx,
2624 (ast_expression*)entity,
2625 (ast_expression*)subscript,
2626 (ast_expression*)subscript);
2628 ast_delete(subscript);
2632 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
2634 ast_delete(entfield);
2638 block = ast_block_new(ctx);
2644 vec_push(block->exprs, (ast_expression*)st);
2646 ret = ast_return_new(ctx, NULL);
2652 vec_push(block->exprs, (ast_expression*)ret);
2654 return (ast_expression*)block;
2656 ast_expression *left, *right;
2657 size_t diff = afterend - from;
2658 size_t middle = from + diff/2;
2659 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
2660 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
2661 return array_accessor_split(parser, array, index, middle, left, right);
2665 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
2667 lex_ctx ctx = ast_ctx(array);
2669 if (from+1 == afterend) {
2671 ast_array_index *subscript;
2673 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2677 ret = ast_return_new(ctx, (ast_expression*)subscript);
2679 ast_delete(subscript);
2683 return (ast_expression*)ret;
2685 ast_expression *left, *right;
2686 size_t diff = afterend - from;
2687 size_t middle = from + diff/2;
2688 left = array_getter_node(parser, array, index, from, middle);
2689 right = array_getter_node(parser, array, index, middle, afterend);
2690 return array_accessor_split(parser, array, index, middle, left, right);
2694 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
2696 ast_function *func = NULL;
2697 ast_value *fval = NULL;
2698 ast_block *body = NULL;
2700 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
2702 parseerror(parser, "failed to create accessor function value");
2706 func = ast_function_new(ast_ctx(array), funcname, fval);
2709 parseerror(parser, "failed to create accessor function node");
2713 body = ast_block_new(ast_ctx(array));
2715 parseerror(parser, "failed to create block for array accessor");
2721 vec_push(func->blocks, body);
2724 vec_push(parser->accessors, fval);
2729 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
2731 ast_expression *root = NULL;
2732 ast_value *index = NULL;
2733 ast_value *value = NULL;
2737 if (!ast_istype(array->expression.next, ast_value)) {
2738 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2742 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2744 func = fval->constval.vfunc;
2745 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2747 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2748 value = ast_value_copy((ast_value*)array->expression.next);
2750 if (!index || !value) {
2751 parseerror(parser, "failed to create locals for array accessor");
2754 (void)!ast_value_set_name(value, "value"); /* not important */
2755 vec_push(fval->expression.params, index);
2756 vec_push(fval->expression.params, value);
2758 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
2760 parseerror(parser, "failed to build accessor search tree");
2764 vec_push(func->blocks[0]->exprs, root);
2765 array->setter = fval;
2768 if (index) ast_delete(index);
2769 if (value) ast_delete(value);
2770 if (root) ast_delete(root);
2776 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
2778 ast_expression *root = NULL;
2779 ast_value *entity = NULL;
2780 ast_value *index = NULL;
2781 ast_value *value = NULL;
2785 if (!ast_istype(array->expression.next, ast_value)) {
2786 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2790 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2792 func = fval->constval.vfunc;
2793 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2795 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
2796 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2797 value = ast_value_copy((ast_value*)array->expression.next);
2798 if (!entity || !index || !value) {
2799 parseerror(parser, "failed to create locals for array accessor");
2802 (void)!ast_value_set_name(value, "value"); /* not important */
2803 vec_push(fval->expression.params, entity);
2804 vec_push(fval->expression.params, index);
2805 vec_push(fval->expression.params, value);
2807 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
2809 parseerror(parser, "failed to build accessor search tree");
2813 vec_push(func->blocks[0]->exprs, root);
2814 array->setter = fval;
2817 if (entity) ast_delete(entity);
2818 if (index) ast_delete(index);
2819 if (value) ast_delete(value);
2820 if (root) ast_delete(root);
2826 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
2828 ast_expression *root = NULL;
2829 ast_value *index = NULL;
2833 /* NOTE: checking array->expression.next rather than elemtype since
2834 * for fields elemtype is a temporary fieldtype.
2836 if (!ast_istype(array->expression.next, ast_value)) {
2837 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2841 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2843 func = fval->constval.vfunc;
2844 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
2846 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2849 parseerror(parser, "failed to create locals for array accessor");
2852 vec_push(fval->expression.params, index);
2854 root = array_getter_node(parser, array, index, 0, array->expression.count);
2856 parseerror(parser, "failed to build accessor search tree");
2860 vec_push(func->blocks[0]->exprs, root);
2861 array->getter = fval;
2864 if (index) ast_delete(index);
2865 if (root) ast_delete(root);
2871 static ast_value *parse_typename(parser_t *parser, ast_value **storebase);
2872 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
2880 bool variadic = false;
2882 ctx = parser_ctx(parser);
2884 /* for the sake of less code we parse-in in this function */
2885 if (!parser_next(parser)) {
2886 parseerror(parser, "expected parameter list");
2892 /* parse variables until we hit a closing paren */
2893 while (parser->tok != ')') {
2895 /* there must be commas between them */
2896 if (parser->tok != ',') {
2897 parseerror(parser, "expected comma or end of parameter list");
2900 if (!parser_next(parser)) {
2901 parseerror(parser, "expected parameter");
2907 if (parser->tok == TOKEN_DOTS) {
2908 /* '...' indicates a varargs function */
2910 if (!parser_next(parser)) {
2911 parseerror(parser, "expected parameter");
2914 if (parser->tok != ')') {
2915 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
2921 /* for anything else just parse a typename */
2922 param = parse_typename(parser, NULL);
2925 vec_push(params, param);
2926 if (param->expression.vtype >= TYPE_VARIANT) {
2927 char typename[1024];
2928 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
2929 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
2936 if (vec_size(params) > 8 && opts_standard == COMPILER_QCC)
2937 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
2940 if (!parser_next(parser)) {
2941 parseerror(parser, "parse error after typename");
2945 /* now turn 'var' into a function type */
2946 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
2947 fval->expression.next = (ast_expression*)var;
2948 fval->expression.variadic = variadic;
2951 var->expression.params = params;
2958 for (i = 0; i < vec_size(params); ++i)
2959 ast_delete(params[i]);
2964 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
2966 ast_expression *cexp;
2967 ast_value *cval, *tmp;
2970 ctx = parser_ctx(parser);
2972 if (!parser_next(parser)) {
2974 parseerror(parser, "expected array-size");
2978 cexp = parse_expression_leave(parser, true);
2980 if (!cexp || !ast_istype(cexp, ast_value)) {
2984 parseerror(parser, "expected array-size as constant positive integer");
2987 cval = (ast_value*)cexp;
2989 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
2990 tmp->expression.next = (ast_expression*)var;
2993 if (cval->expression.vtype == TYPE_INTEGER)
2994 tmp->expression.count = cval->constval.vint;
2995 else if (cval->expression.vtype == TYPE_FLOAT)
2996 tmp->expression.count = cval->constval.vfloat;
3000 parseerror(parser, "array-size must be a positive integer constant");
3005 if (parser->tok != ']') {
3007 parseerror(parser, "expected ']' after array-size");
3010 if (!parser_next(parser)) {
3012 parseerror(parser, "error after parsing array size");
3018 /* Parse a complete typename.
3019 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3020 * but when parsing variables separated by comma
3021 * 'storebase' should point to where the base-type should be kept.
3022 * The base type makes up every bit of type information which comes *before* the
3025 * The following will be parsed in its entirety:
3027 * The 'basetype' in this case is 'void()'
3028 * and if there's a comma after it, say:
3030 * then the type-information 'void()' can be stored in 'storebase'
3032 static ast_value *parse_typename(parser_t *parser, ast_value **storebase)
3034 ast_value *var, *tmp;
3037 const char *name = NULL;
3038 bool isfield = false;
3039 bool wasarray = false;
3041 ctx = parser_ctx(parser);
3043 /* types may start with a dot */
3044 if (parser->tok == '.') {
3046 /* if we parsed a dot we need a typename now */
3047 if (!parser_next(parser)) {
3048 parseerror(parser, "expected typename for field definition");
3051 if (parser->tok != TOKEN_TYPENAME) {
3052 parseerror(parser, "expected typename");
3057 /* generate the basic type value */
3058 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3059 /* do not yet turn into a field - remember:
3060 * .void() foo; is a field too
3061 * .void()() foo; is a function
3065 if (!parser_next(parser)) {
3067 parseerror(parser, "parse error after typename");
3071 /* an opening paren now starts the parameter-list of a function
3072 * this is where original-QC has parameter lists.
3073 * We allow a single parameter list here.
3074 * Much like fteqcc we don't allow `float()() x`
3076 if (parser->tok == '(') {
3077 var = parse_parameter_list(parser, var);
3082 /* store the base if requested */
3084 *storebase = ast_value_copy(var);
3086 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3087 tmp->expression.next = (ast_expression*)*storebase;
3092 /* there may be a name now */
3093 if (parser->tok == TOKEN_IDENT) {
3094 name = util_strdup(parser_tokval(parser));
3096 if (!parser_next(parser)) {
3098 parseerror(parser, "error after variable or field declaration");
3103 /* now this may be an array */
3104 if (parser->tok == '[') {
3106 var = parse_arraysize(parser, var);
3111 /* This is the point where we can turn it into a field */
3113 /* turn it into a field if desired */
3114 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3115 tmp->expression.next = (ast_expression*)var;
3119 /* now there may be function parens again */
3120 if (parser->tok == '(' && opts_standard == COMPILER_QCC)
3121 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3122 if (parser->tok == '(' && wasarray)
3123 parseerror(parser, "arrays as part of a return type is not supported");
3124 while (parser->tok == '(') {
3125 var = parse_parameter_list(parser, var);
3134 /* finally name it */
3136 if (!ast_value_set_name(var, name)) {
3138 parseerror(parser, "internal error: failed to set name");
3141 /* free the name, ast_value_set_name duplicates */
3148 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields)
3152 ast_expression *old;
3156 ast_value *basetype = NULL;
3158 bool isparam = false;
3159 bool isvector = false;
3160 bool cleanvar = true;
3161 bool wasarray = false;
3163 varentry_t varent, ve[3];
3165 /* get the first complete variable */
3166 var = parse_typename(parser, &basetype);
3169 ast_delete(basetype);
3173 memset(&varent, 0, sizeof(varent));
3174 memset(&ve, 0, sizeof(ve));
3180 /* Part 0: finish the type */
3181 if (parser->tok == '(') {
3182 if (opts_standard == COMPILER_QCC)
3183 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3184 var = parse_parameter_list(parser, var);
3190 /* we only allow 1-dimensional arrays */
3191 if (parser->tok == '[') {
3193 var = parse_arraysize(parser, var);
3199 if (parser->tok == '(' && wasarray) {
3200 parseerror(parser, "arrays as part of a return type is not supported");
3201 /* we'll still parse the type completely for now */
3203 /* for functions returning functions */
3204 while (parser->tok == '(') {
3205 if (opts_standard == COMPILER_QCC)
3206 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3207 var = parse_parameter_list(parser, var);
3215 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3216 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3217 * is then filled with the previous definition and the parameter-names replaced.
3220 /* Deal with end_sys_ vars */
3222 if (!strcmp(var->name, "end_sys_globals")) {
3223 parser->crc_globals = vec_size(parser->globals);
3226 else if (!strcmp(var->name, "end_sys_fields")) {
3227 parser->crc_fields = vec_size(parser->fields);
3230 if (was_end && var->expression.vtype == TYPE_FIELD) {
3231 if (parsewarning(parser, WARN_END_SYS_FIELDS,
3232 "global '%s' hint should not be a field",
3233 parser_tokval(parser)))
3240 if (!nofields && var->expression.vtype == TYPE_FIELD)
3242 /* deal with field declarations */
3243 old = parser_find_field(parser, var->name);
3245 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
3246 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
3255 parseerror(parser, "field `%s` already declared here: %s:%i",
3256 var->name, ast_ctx(old).file, ast_ctx(old).line);
3261 if (opts_standard == COMPILER_QCC &&
3262 (old = parser_find_global(parser, var->name)))
3264 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3265 parseerror(parser, "field `%s` already declared here: %s:%i",
3266 var->name, ast_ctx(old).file, ast_ctx(old).line);
3273 /* deal with other globals */
3274 old = parser_find_global(parser, var->name);
3275 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
3277 /* This is a function which had a prototype */
3278 if (!ast_istype(old, ast_value)) {
3279 parseerror(parser, "internal error: prototype is not an ast_value");
3283 proto = (ast_value*)old;
3284 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
3285 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
3287 ast_ctx(proto).file, ast_ctx(proto).line);
3291 /* we need the new parameter-names */
3292 for (i = 0; i < vec_size(proto->expression.params); ++i)
3293 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
3301 parseerror(parser, "global `%s` already declared here: %s:%i",
3302 var->name, ast_ctx(old).file, ast_ctx(old).line);
3306 if (opts_standard == COMPILER_QCC &&
3307 (old = parser_find_field(parser, var->name)))
3309 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3310 parseerror(parser, "global `%s` already declared here: %s:%i",
3311 var->name, ast_ctx(old).file, ast_ctx(old).line);
3318 else /* it's not a global */
3320 old = parser_find_local(parser, var->name, parser->blocklocal, &isparam);
3321 if (old && !isparam) {
3322 parseerror(parser, "local `%s` already declared here: %s:%i",
3323 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3327 old = parser_find_local(parser, var->name, 0, &isparam);
3328 if (old && isparam) {
3329 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
3330 "local `%s` is shadowing a parameter", var->name))
3332 parseerror(parser, "local `%s` already declared here: %s:%i",
3333 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3337 if (opts_standard != COMPILER_GMQCC) {
3346 * Create the global/local, and deal with vector types.
3349 if (var->expression.vtype == TYPE_VECTOR)
3351 else if (var->expression.vtype == TYPE_FIELD &&
3352 var->expression.next->expression.vtype == TYPE_VECTOR)
3356 if (!create_vector_members(var, ve)) {
3362 varent.name = util_strdup(var->name);
3363 varent.var = (ast_expression*)var;
3366 /* deal with global variables, fields, functions */
3367 if (!nofields && var->expression.vtype == TYPE_FIELD) {
3368 vec_push(parser->fields, varent);
3370 for (i = 0; i < 3; ++i)
3371 vec_push(parser->fields, ve[i]);
3375 vec_push(parser->globals, varent);
3377 for (i = 0; i < 3; ++i)
3378 vec_push(parser->globals, ve[i]);
3382 vec_push(parser->locals, varent);
3383 vec_push(localblock->locals, var);
3385 for (i = 0; i < 3; ++i) {
3386 vec_push(parser->locals, ve[i]);
3387 ast_block_collect(localblock, ve[i].var);
3388 ve[i].var = NULL; /* from here it's being collected in the block */
3394 ve[0].name = ve[1].name = ve[2].name = NULL;
3395 ve[0].var = ve[1].var = ve[2].var = NULL;
3401 if (var->expression.vtype == TYPE_ARRAY) {
3403 snprintf(name, sizeof(name), "%s##SET", var->name);
3404 if (!parser_create_array_setter(parser, var, name))
3406 snprintf(name, sizeof(name), "%s##GET", var->name);
3407 if (!parser_create_array_getter(parser, var, var->expression.next, name))
3410 else if (!localblock && !nofields &&
3411 var->expression.vtype == TYPE_FIELD &&
3412 var->expression.next->expression.vtype == TYPE_ARRAY)
3415 ast_expression *telem;
3417 ast_value *array = (ast_value*)var->expression.next;
3419 if (!ast_istype(var->expression.next, ast_value)) {
3420 parseerror(parser, "internal error: field element type must be an ast_value");
3424 snprintf(name, sizeof(name), "%s##SETF", var->name);
3425 if (!parser_create_array_field_setter(parser, array, name))
3428 telem = ast_type_copy(ast_ctx(var), array->expression.next);
3429 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
3430 tfield->expression.next = telem;
3431 snprintf(name, sizeof(name), "%s##GETFP", var->name);
3432 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
3440 if (parser->tok == ';') {
3441 ast_delete(basetype);
3442 if (!parser_next(parser)) {
3443 parseerror(parser, "error after variable declaration");
3449 if (parser->tok == ',')
3452 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
3453 parseerror(parser, "missing comma or semicolon while parsing variables");
3457 if (localblock && opts_standard == COMPILER_QCC) {
3458 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
3459 "initializing expression turns variable `%s` into a constant in this standard",
3466 if (parser->tok != '{') {
3467 if (parser->tok != '=') {
3468 parseerror(parser, "missing semicolon or initializer");
3472 if (!parser_next(parser)) {
3473 parseerror(parser, "error parsing initializer");
3477 else if (opts_standard == COMPILER_QCC) {
3478 parseerror(parser, "expected '=' before function body in this standard");
3481 if (parser->tok == '#') {
3485 parseerror(parser, "cannot declare builtins within functions");
3488 if (var->expression.vtype != TYPE_FUNCTION) {
3489 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
3492 if (!parser_next(parser)) {
3493 parseerror(parser, "expected builtin number");
3496 if (parser->tok != TOKEN_INTCONST) {
3497 parseerror(parser, "builtin number must be an integer constant");
3500 if (parser_token(parser)->constval.i <= 0) {
3501 parseerror(parser, "builtin number must be an integer greater than zero");
3505 func = ast_function_new(ast_ctx(var), var->name, var);
3507 parseerror(parser, "failed to allocate function for `%s`", var->name);
3510 vec_push(parser->functions, func);
3512 func->builtin = -parser_token(parser)->constval.i;
3514 if (!parser_next(parser)) {
3515 parseerror(parser, "expected comma or semicolon");
3516 ast_function_delete(func);
3517 var->constval.vfunc = NULL;
3521 else if (parser->tok == '{' || parser->tok == '[')
3524 parseerror(parser, "cannot declare functions within functions");
3528 if (!parse_function_body(parser, var))
3530 ast_delete(basetype);
3533 ast_expression *cexp;
3536 cexp = parse_expression_leave(parser, true);
3541 cval = (ast_value*)cexp;
3542 if (!ast_istype(cval, ast_value) || !cval->isconst)
3543 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
3546 var->isconst = true;
3547 if (cval->expression.vtype == TYPE_STRING)
3548 var->constval.vstring = parser_strdup(cval->constval.vstring);
3550 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
3554 shunt sy = { NULL, NULL };
3555 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
3556 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
3557 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
3558 if (!parser_sy_pop(parser, &sy))
3561 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
3562 parseerror(parser, "internal error: leaked operands");
3563 vec_push(localblock->exprs, (ast_expression*)sy.out[0].out);
3571 if (parser->tok == ',') {
3572 if (!parser_next(parser)) {
3573 parseerror(parser, "expected another variable");
3577 if (parser->tok != TOKEN_IDENT) {
3578 parseerror(parser, "expected another variable");
3581 var = ast_value_copy(basetype);
3583 ast_value_set_name(var, parser_tokval(parser));
3584 if (!parser_next(parser)) {
3585 parseerror(parser, "error parsing variable declaration");
3591 if (parser->tok != ';') {
3592 parseerror(parser, "missing semicolon after variables");
3596 if (!parser_next(parser)) {
3597 parseerror(parser, "parse error after variable declaration");
3601 ast_delete(basetype);
3605 if (cleanvar && var)
3607 ast_delete(basetype);
3611 ast_delete(basetype);
3612 if (cleanvar && var)
3614 if (varent.name) mem_d(varent.name);
3615 if (ve[0].name) mem_d(ve[0].name);
3616 if (ve[1].name) mem_d(ve[1].name);
3617 if (ve[2].name) mem_d(ve[2].name);
3618 if (ve[0].var) mem_d(ve[0].var);
3619 if (ve[1].var) mem_d(ve[1].var);
3620 if (ve[2].var) mem_d(ve[2].var);
3624 static bool parser_global_statement(parser_t *parser)
3626 if (parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3628 return parse_variable(parser, NULL, false);
3630 else if (parser->tok == TOKEN_KEYWORD)
3632 /* handle 'var' and 'const' */
3633 if (!strcmp(parser_tokval(parser), "var")) {
3634 if (!parser_next(parser)) {
3635 parseerror(parser, "expected variable declaration after 'var'");
3638 return parse_variable(parser, NULL, true);
3642 else if (parser->tok == '$')
3644 if (!parser_next(parser)) {
3645 parseerror(parser, "parse error");
3651 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
3657 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
3659 return util_crc16(old, str, strlen(str));
3662 static void progdefs_crc_file(const char *str)
3664 /* write to progdefs.h here */
3668 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
3670 old = progdefs_crc_sum(old, str);
3671 progdefs_crc_file(str);
3675 static void generate_checksum(parser_t *parser)
3677 uint16_t crc = 0xFFFF;
3680 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
3681 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
3683 progdefs_crc_file("\tint\tpad;\n");
3684 progdefs_crc_file("\tint\tofs_return[3];\n");
3685 progdefs_crc_file("\tint\tofs_parm0[3];\n");
3686 progdefs_crc_file("\tint\tofs_parm1[3];\n");
3687 progdefs_crc_file("\tint\tofs_parm2[3];\n");
3688 progdefs_crc_file("\tint\tofs_parm3[3];\n");
3689 progdefs_crc_file("\tint\tofs_parm4[3];\n");
3690 progdefs_crc_file("\tint\tofs_parm5[3];\n");
3691 progdefs_crc_file("\tint\tofs_parm6[3];\n");
3692 progdefs_crc_file("\tint\tofs_parm7[3];\n");
3694 for (i = 0; i < parser->crc_globals; ++i) {
3695 if (!ast_istype(parser->globals[i].var, ast_value))
3697 switch (parser->globals[i].var->expression.vtype) {
3698 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
3699 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
3700 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
3701 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
3703 crc = progdefs_crc_both(crc, "\tint\t");
3706 crc = progdefs_crc_both(crc, parser->globals[i].name);
3707 crc = progdefs_crc_both(crc, ";\n");
3709 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
3710 for (i = 0; i < parser->crc_fields; ++i) {
3711 if (!ast_istype(parser->fields[i].var, ast_value))
3713 switch (parser->fields[i].var->expression.next->expression.vtype) {
3714 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
3715 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
3716 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
3717 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
3719 crc = progdefs_crc_both(crc, "\tint\t");
3722 crc = progdefs_crc_both(crc, parser->fields[i].name);
3723 crc = progdefs_crc_both(crc, ";\n");
3725 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
3730 static parser_t *parser;
3735 parser = (parser_t*)mem_a(sizeof(parser_t));
3739 memset(parser, 0, sizeof(*parser));
3741 for (i = 0; i < operator_count; ++i) {
3742 if (operators[i].id == opid1('=')) {
3743 parser->assign_op = operators+i;
3747 if (!parser->assign_op) {
3748 printf("internal error: initializing parser: failed to find assign operator\n");
3755 bool parser_compile()
3757 /* initial lexer/parser state */
3758 parser->lex->flags.noops = true;
3760 if (parser_next(parser))
3762 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3764 if (!parser_global_statement(parser)) {
3765 if (parser->tok == TOKEN_EOF)
3766 parseerror(parser, "unexpected eof");
3767 else if (!parser->errors)
3768 parseerror(parser, "there have been errors, bailing out");
3769 lex_close(parser->lex);
3775 parseerror(parser, "parse error");
3776 lex_close(parser->lex);
3781 lex_close(parser->lex);
3784 return !parser->errors;
3787 bool parser_compile_file(const char *filename)
3789 parser->lex = lex_open(filename);
3791 con_err("failed to open file \"%s\"\n", filename);
3794 return parser_compile();
3797 bool parser_compile_string_len(const char *name, const char *str, size_t len)
3799 parser->lex = lex_open_string(str, len, name);
3801 con_err("failed to create lexer for string \"%s\"\n", name);
3804 return parser_compile();
3807 bool parser_compile_string(const char *name, const char *str)
3809 parser->lex = lex_open_string(str, strlen(str), name);
3811 con_err("failed to create lexer for string \"%s\"\n", name);
3814 return parser_compile();
3817 void parser_cleanup()
3820 for (i = 0; i < vec_size(parser->accessors); ++i) {
3821 ast_delete(parser->accessors[i]->constval.vfunc);
3822 parser->accessors[i]->constval.vfunc = NULL;
3823 ast_delete(parser->accessors[i]);
3825 for (i = 0; i < vec_size(parser->functions); ++i) {
3826 ast_delete(parser->functions[i]);
3828 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
3829 ast_delete(parser->imm_vector[i]);
3831 for (i = 0; i < vec_size(parser->imm_string); ++i) {
3832 ast_delete(parser->imm_string[i]);
3834 for (i = 0; i < vec_size(parser->imm_float); ++i) {
3835 ast_delete(parser->imm_float[i]);
3837 for (i = 0; i < vec_size(parser->fields); ++i) {
3838 ast_delete(parser->fields[i].var);
3839 mem_d(parser->fields[i].name);
3841 for (i = 0; i < vec_size(parser->globals); ++i) {
3842 ast_delete(parser->globals[i].var);
3843 mem_d(parser->globals[i].name);
3845 vec_free(parser->accessors);
3846 vec_free(parser->functions);
3847 vec_free(parser->imm_vector);
3848 vec_free(parser->imm_string);
3849 vec_free(parser->imm_float);
3850 vec_free(parser->globals);
3851 vec_free(parser->fields);
3852 vec_free(parser->locals);
3857 bool parser_finish(const char *output)
3863 if (!parser->errors)
3865 ir = ir_builder_new("gmqcc_out");
3867 con_out("failed to allocate builder\n");
3871 for (i = 0; i < vec_size(parser->fields); ++i) {
3874 if (!ast_istype(parser->fields[i].var, ast_value))
3876 field = (ast_value*)parser->fields[i].var;
3877 isconst = field->isconst;
3878 field->isconst = false;
3879 if (!ast_global_codegen((ast_value*)field, ir, true)) {
3880 con_out("failed to generate field %s\n", field->name);
3881 ir_builder_delete(ir);
3886 ast_expression *subtype;
3887 field->isconst = true;
3888 subtype = field->expression.next;
3889 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
3890 if (subtype->expression.vtype == TYPE_FIELD)
3891 ifld->fieldtype = subtype->expression.next->expression.vtype;
3892 else if (subtype->expression.vtype == TYPE_FUNCTION)
3893 ifld->outtype = subtype->expression.next->expression.vtype;
3894 (void)!ir_value_set_field(field->ir_v, ifld);
3897 for (i = 0; i < vec_size(parser->globals); ++i) {
3899 if (!ast_istype(parser->globals[i].var, ast_value))
3901 asvalue = (ast_value*)(parser->globals[i].var);
3902 if (!asvalue->uses && !asvalue->isconst && asvalue->expression.vtype != TYPE_FUNCTION) {
3903 if (strcmp(asvalue->name, "end_sys_globals") &&
3904 strcmp(asvalue->name, "end_sys_fields"))
3906 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
3907 "unused global: `%s`", asvalue->name);
3910 if (!ast_global_codegen(asvalue, ir, false)) {
3911 con_out("failed to generate global %s\n", parser->globals[i].name);
3912 ir_builder_delete(ir);
3916 for (i = 0; i < vec_size(parser->imm_float); ++i) {
3917 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
3918 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
3919 ir_builder_delete(ir);
3923 for (i = 0; i < vec_size(parser->imm_string); ++i) {
3924 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
3925 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
3926 ir_builder_delete(ir);
3930 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
3931 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
3932 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
3933 ir_builder_delete(ir);
3937 for (i = 0; i < vec_size(parser->globals); ++i) {
3939 if (!ast_istype(parser->globals[i].var, ast_value))
3941 asvalue = (ast_value*)(parser->globals[i].var);
3942 if (asvalue->setter) {
3943 if (!ast_global_codegen(asvalue->setter, ir, false) ||
3944 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
3945 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
3947 printf("failed to generate setter for %s\n", parser->globals[i].name);
3948 ir_builder_delete(ir);
3952 if (asvalue->getter) {
3953 if (!ast_global_codegen(asvalue->getter, ir, false) ||
3954 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
3955 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
3957 printf("failed to generate getter for %s\n", parser->globals[i].name);
3958 ir_builder_delete(ir);
3963 for (i = 0; i < vec_size(parser->fields); ++i) {
3965 asvalue = (ast_value*)(parser->fields[i].var->expression.next);
3967 if (!ast_istype((ast_expression*)asvalue, ast_value))
3969 if (asvalue->expression.vtype != TYPE_ARRAY)
3971 if (asvalue->setter) {
3972 if (!ast_global_codegen(asvalue->setter, ir, false) ||
3973 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
3974 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
3976 printf("failed to generate setter for %s\n", parser->fields[i].name);
3977 ir_builder_delete(ir);
3981 if (asvalue->getter) {
3982 if (!ast_global_codegen(asvalue->getter, ir, false) ||
3983 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
3984 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
3986 printf("failed to generate getter for %s\n", parser->fields[i].name);
3987 ir_builder_delete(ir);
3992 for (i = 0; i < vec_size(parser->functions); ++i) {
3993 if (!ast_function_codegen(parser->functions[i], ir)) {
3994 con_out("failed to generate function %s\n", parser->functions[i]->name);
3995 ir_builder_delete(ir);
4000 ir_builder_dump(ir, con_out);
4001 for (i = 0; i < vec_size(parser->functions); ++i) {
4002 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4003 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4004 ir_builder_delete(ir);
4011 ir_builder_dump(ir, con_out);
4013 generate_checksum(parser);
4015 if (!ir_builder_generate(ir, output)) {
4016 con_out("*** failed to generate output file\n");
4017 ir_builder_delete(ir);
4022 ir_builder_delete(ir);
4026 con_out("*** there were compile errors\n");