18 ast_function **functions;
19 ast_value **imm_float;
20 ast_value **imm_string;
21 ast_value **imm_vector;
23 /* must be deleted first, they reference immediates and values */
24 ast_value **accessors;
26 ast_value *imm_float_zero;
27 ast_value *imm_float_one;
28 ast_value *imm_vector_zero;
33 ast_function *function;
39 /* we store the '=' operator info */
40 const oper_info *assign_op;
42 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
43 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
44 * anything else: type error
50 static bool GMQCC_WARN parser_pop_local(parser_t *parser);
51 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields);
52 static ast_block* parse_block(parser_t *parser, bool warnreturn);
53 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn);
54 static ast_expression* parse_statement_or_block(parser_t *parser);
55 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
56 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma);
57 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma);
59 static void parseerror(parser_t *parser, const char *fmt, ...)
66 con_vprintmsg(LVL_ERROR, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "parse error", fmt, ap);
70 /* returns true if it counts as an error */
71 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
74 int lvl = LVL_WARNING;
76 if (!OPTS_WARN(warntype))
85 con_vprintmsg(lvl, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "warning", fmt, ap);
91 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
94 int lvl = LVL_WARNING;
96 if (!OPTS_WARN(warntype))
103 con_vprintmsg(lvl, ctx.file, ctx.line, "warning", fmt, ap);
109 /**********************************************************************
110 * some maths used for constant folding
113 vector vec3_add(vector a, vector b)
122 vector vec3_sub(vector a, vector b)
131 qcfloat vec3_mulvv(vector a, vector b)
133 return (a.x * b.x + a.y * b.y + a.z * b.z);
136 vector vec3_mulvf(vector a, float b)
145 /**********************************************************************
149 bool parser_next(parser_t *parser)
151 /* lex_do kills the previous token */
152 parser->tok = lex_do(parser->lex);
153 if (parser->tok == TOKEN_EOF)
155 if (parser->tok >= TOKEN_ERROR) {
156 parseerror(parser, "lex error");
162 #define parser_tokval(p) ((p)->lex->tok.value)
163 #define parser_token(p) (&((p)->lex->tok))
164 #define parser_ctx(p) ((p)->lex->tok.ctx)
166 static ast_value* parser_const_float(parser_t *parser, double d)
170 for (i = 0; i < vec_size(parser->imm_float); ++i) {
171 const double compare = parser->imm_float[i]->constval.vfloat;
172 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
173 return parser->imm_float[i];
175 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
177 out->constval.vfloat = d;
178 vec_push(parser->imm_float, out);
182 static ast_value* parser_const_float_0(parser_t *parser)
184 if (!parser->imm_float_zero)
185 parser->imm_float_zero = parser_const_float(parser, 0);
186 return parser->imm_float_zero;
189 static ast_value* parser_const_float_1(parser_t *parser)
191 if (!parser->imm_float_one)
192 parser->imm_float_one = parser_const_float(parser, 1);
193 return parser->imm_float_one;
196 static char *parser_strdup(const char *str)
199 /* actually dup empty strings */
200 char *out = mem_a(1);
204 return util_strdup(str);
207 static ast_value* parser_const_string(parser_t *parser, const char *str)
211 for (i = 0; i < vec_size(parser->imm_string); ++i) {
212 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
213 return parser->imm_string[i];
215 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
217 out->constval.vstring = parser_strdup(str);
218 vec_push(parser->imm_string, out);
222 static ast_value* parser_const_vector(parser_t *parser, vector v)
226 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
227 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
228 return parser->imm_vector[i];
230 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
232 out->constval.vvec = v;
233 vec_push(parser->imm_vector, out);
237 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
243 return parser_const_vector(parser, v);
246 static ast_value* parser_const_vector_0(parser_t *parser)
248 if (!parser->imm_vector_zero)
249 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
250 return parser->imm_vector_zero;
253 static ast_expression* parser_find_field(parser_t *parser, const char *name)
256 for (i = 0; i < vec_size(parser->fields); ++i) {
257 if (!strcmp(parser->fields[i].name, name))
258 return parser->fields[i].var;
263 static ast_expression* parser_find_global(parser_t *parser, const char *name)
266 for (i = 0; i < vec_size(parser->globals); ++i) {
267 if (!strcmp(parser->globals[i].name, name))
268 return parser->globals[i].var;
273 static ast_expression* parser_find_param(parser_t *parser, const char *name)
277 if (!parser->function)
279 fun = parser->function->vtype;
280 for (i = 0; i < vec_size(fun->expression.params); ++i) {
281 if (!strcmp(fun->expression.params[i]->name, name))
282 return (ast_expression*)(fun->expression.params[i]);
287 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
291 for (i = vec_size(parser->locals); i > upto;) {
293 if (!strcmp(parser->locals[i].name, name))
294 return parser->locals[i].var;
297 return parser_find_param(parser, name);
300 static ast_expression* parser_find_var(parser_t *parser, const char *name)
304 v = parser_find_local(parser, name, 0, &dummy);
305 if (!v) v = parser_find_global(parser, name);
311 size_t etype; /* 0 = expression, others are operators */
315 ast_block *block; /* for commas and function calls */
324 #define SY_PAREN_EXPR '('
325 #define SY_PAREN_FUNC 'f'
326 #define SY_PAREN_INDEX '['
328 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
339 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
343 e.out = (ast_expression*)v;
350 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
352 e.etype = 1 + (op - operators);
361 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
373 # define DEBUGSHUNTDO(x) x
375 # define DEBUGSHUNTDO(x)
378 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
379 * so we need to rotate it to become ent.(foo[n]).
381 static bool rotate_entfield_array_index_nodes(ast_expression **out)
383 ast_array_index *index;
384 ast_entfield *entfield;
388 ast_expression *entity;
390 lex_ctx ctx = ast_ctx(*out);
392 if (!ast_istype(*out, ast_array_index))
394 index = (ast_array_index*)*out;
396 if (!ast_istype(index->array, ast_entfield))
398 entfield = (ast_entfield*)index->array;
400 if (!ast_istype(entfield->field, ast_value))
402 field = (ast_value*)entfield->field;
405 entity = entfield->entity;
409 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
410 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
411 *out = (ast_expression*)entfield;
416 static bool parser_sy_pop(parser_t *parser, shunt *sy)
420 ast_expression *out = NULL;
421 ast_expression *exprs[3];
422 ast_block *blocks[3];
423 ast_value *asvalue[3];
424 size_t i, assignop, addop, subop;
425 qcint generated_op = 0;
430 if (!vec_size(sy->ops)) {
431 parseerror(parser, "internal error: missing operator");
435 if (vec_last(sy->ops).paren) {
436 parseerror(parser, "unmatched parenthesis");
440 op = &operators[vec_last(sy->ops).etype - 1];
441 ctx = vec_last(sy->ops).ctx;
443 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
445 if (vec_size(sy->out) < op->operands) {
446 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
447 op->op, (int)op->id);
451 vec_shrinkby(sy->ops, 1);
453 vec_shrinkby(sy->out, op->operands);
454 for (i = 0; i < op->operands; ++i) {
455 exprs[i] = sy->out[vec_size(sy->out)+i].out;
456 blocks[i] = sy->out[vec_size(sy->out)+i].block;
457 asvalue[i] = (ast_value*)exprs[i];
460 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
461 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
465 #define NotSameType(T) \
466 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
467 exprs[0]->expression.vtype != T)
468 #define CanConstFold1(A) \
469 (ast_istype((A), ast_value) && ((ast_value*)(A))->isconst)
470 #define CanConstFold(A, B) \
471 (CanConstFold1(A) && CanConstFold1(B))
472 #define ConstV(i) (asvalue[(i)]->constval.vvec)
473 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
474 #define ConstS(i) (asvalue[(i)]->constval.vstring)
478 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
482 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
483 if (exprs[1]->expression.vtype != TYPE_FIELD) {
484 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
487 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
489 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
490 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
494 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
500 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
501 !(exprs[0]->expression.vtype == TYPE_FIELD &&
502 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
504 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
505 parseerror(parser, "cannot index value of type %s", ty1);
508 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
509 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
510 parseerror(parser, "index must be of type float, not %s", ty1);
513 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
514 if (rotate_entfield_array_index_nodes(&out))
516 if (opts_standard != COMPILER_GMQCC) {
517 /* this error doesn't need to make us bail out */
518 (void)!parsewarning(parser, WARN_EXTENSIONS,
519 "accessing array-field members of an entity without parenthesis\n"
520 " -> this is an extension from -std=gmqcc");
527 vec_push(blocks[0]->exprs, exprs[1]);
529 blocks[0] = ast_block_new(ctx);
530 vec_push(blocks[0]->exprs, exprs[0]);
531 vec_push(blocks[0]->exprs, exprs[1]);
533 if (!ast_block_set_type(blocks[0], exprs[1]))
536 vec_push(sy->out, syblock(ctx, blocks[0]));
540 switch (exprs[0]->expression.vtype) {
542 if (CanConstFold1(exprs[0]))
543 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
545 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
546 (ast_expression*)parser_const_float_0(parser),
550 if (CanConstFold1(exprs[0]))
551 out = (ast_expression*)parser_const_vector_f(parser,
552 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
554 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
555 (ast_expression*)parser_const_vector_0(parser),
559 parseerror(parser, "invalid types used in expression: cannot negate type %s",
560 type_name[exprs[0]->expression.vtype]);
566 switch (exprs[0]->expression.vtype) {
568 if (CanConstFold1(exprs[0]))
569 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
571 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
574 if (CanConstFold1(exprs[0]))
575 out = (ast_expression*)parser_const_float(parser,
576 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
578 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
581 if (CanConstFold1(exprs[0]))
582 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
584 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
586 /* we don't constant-fold NOT for these types */
588 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
591 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
594 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
595 type_name[exprs[0]->expression.vtype]);
601 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
602 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
604 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
605 type_name[exprs[0]->expression.vtype],
606 type_name[exprs[1]->expression.vtype]);
609 switch (exprs[0]->expression.vtype) {
611 if (CanConstFold(exprs[0], exprs[1]))
613 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
616 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
619 if (CanConstFold(exprs[0], exprs[1]))
620 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
622 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
625 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
626 type_name[exprs[0]->expression.vtype],
627 type_name[exprs[1]->expression.vtype]);
632 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
633 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
635 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
636 type_name[exprs[1]->expression.vtype],
637 type_name[exprs[0]->expression.vtype]);
640 switch (exprs[0]->expression.vtype) {
642 if (CanConstFold(exprs[0], exprs[1]))
643 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
645 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
648 if (CanConstFold(exprs[0], exprs[1]))
649 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
651 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
654 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
655 type_name[exprs[1]->expression.vtype],
656 type_name[exprs[0]->expression.vtype]);
661 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
662 exprs[0]->expression.vtype != TYPE_VECTOR &&
663 exprs[0]->expression.vtype != TYPE_FLOAT &&
664 exprs[1]->expression.vtype != TYPE_VECTOR &&
665 exprs[1]->expression.vtype != TYPE_FLOAT)
667 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
668 type_name[exprs[1]->expression.vtype],
669 type_name[exprs[0]->expression.vtype]);
672 switch (exprs[0]->expression.vtype) {
674 if (exprs[1]->expression.vtype == TYPE_VECTOR)
676 if (CanConstFold(exprs[0], exprs[1]))
677 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
679 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
683 if (CanConstFold(exprs[0], exprs[1]))
684 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
686 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
690 if (exprs[1]->expression.vtype == TYPE_FLOAT)
692 if (CanConstFold(exprs[0], exprs[1]))
693 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
695 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
699 if (CanConstFold(exprs[0], exprs[1]))
700 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
702 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
706 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
707 type_name[exprs[1]->expression.vtype],
708 type_name[exprs[0]->expression.vtype]);
713 if (NotSameType(TYPE_FLOAT)) {
714 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
715 type_name[exprs[0]->expression.vtype],
716 type_name[exprs[1]->expression.vtype]);
719 if (CanConstFold(exprs[0], exprs[1]))
720 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
722 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
726 parseerror(parser, "qc does not have a modulo operator");
730 if (NotSameType(TYPE_FLOAT)) {
731 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
732 type_name[exprs[0]->expression.vtype],
733 type_name[exprs[1]->expression.vtype]);
736 if (CanConstFold(exprs[0], exprs[1]))
737 out = (ast_expression*)parser_const_float(parser,
738 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
739 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
741 out = (ast_expression*)ast_binary_new(ctx,
742 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
746 parseerror(parser, "TODO: bitxor");
751 case opid3('<','<','='):
752 case opid3('>','>','='):
753 parseerror(parser, "TODO: shifts");
757 generated_op += 1; /* INSTR_OR */
759 generated_op += INSTR_AND;
760 if (NotSameType(TYPE_FLOAT)) {
761 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
762 type_name[exprs[0]->expression.vtype],
763 type_name[exprs[1]->expression.vtype]);
764 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
765 parseerror(parser, "TODO: optional early out");
768 if (opts_standard == COMPILER_GMQCC)
769 con_out("TODO: early out logic\n");
770 if (CanConstFold(exprs[0], exprs[1]))
771 out = (ast_expression*)parser_const_float(parser,
772 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
774 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
778 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
779 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
780 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
781 parseerror(parser, "iperands of ternary expression must have the same type, got %s and %s", ty1, ty2);
784 if (CanConstFold1(exprs[0]))
785 out = (ConstF(0) ? exprs[1] : exprs[2]);
787 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
791 generated_op += 1; /* INSTR_GT */
793 generated_op += 1; /* INSTR_LT */
794 case opid2('>', '='):
795 generated_op += 1; /* INSTR_GE */
796 case opid2('<', '='):
797 generated_op += INSTR_LE;
798 if (NotSameType(TYPE_FLOAT)) {
799 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
800 type_name[exprs[0]->expression.vtype],
801 type_name[exprs[1]->expression.vtype]);
804 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
806 case opid2('!', '='):
807 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
808 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
809 type_name[exprs[0]->expression.vtype],
810 type_name[exprs[1]->expression.vtype]);
813 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
815 case opid2('=', '='):
816 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
817 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
818 type_name[exprs[0]->expression.vtype],
819 type_name[exprs[1]->expression.vtype]);
822 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
826 if (ast_istype(exprs[0], ast_entfield)) {
827 ast_expression *field = ((ast_entfield*)exprs[0])->field;
828 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
829 exprs[0]->expression.vtype == TYPE_FIELD &&
830 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
832 assignop = type_storep_instr[TYPE_VECTOR];
835 assignop = type_storep_instr[exprs[0]->expression.vtype];
836 if (!ast_compare_type(field->expression.next, exprs[1])) {
837 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
838 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
839 if (opts_standard == COMPILER_QCC &&
840 field->expression.next->expression.vtype == TYPE_FUNCTION &&
841 exprs[1]->expression.vtype == TYPE_FUNCTION)
843 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
844 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
850 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
855 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
856 exprs[0]->expression.vtype == TYPE_FIELD &&
857 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
859 assignop = type_store_instr[TYPE_VECTOR];
862 assignop = type_store_instr[exprs[0]->expression.vtype];
865 if (assignop == AINSTR_END) {
866 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
867 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
868 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
870 else if (!ast_compare_type(exprs[0], exprs[1])) {
871 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
872 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
873 if (opts_standard == COMPILER_QCC &&
874 exprs[0]->expression.vtype == TYPE_FUNCTION &&
875 exprs[1]->expression.vtype == TYPE_FUNCTION)
877 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
878 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
884 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
887 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
889 case opid3('+','+','P'):
890 case opid3('-','-','P'):
892 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
893 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
894 parseerror(parser, "invalid type for prefix increment: %s", ty1);
897 if (op->id == opid3('+','+','P'))
901 if (ast_istype(exprs[0], ast_entfield)) {
902 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
904 (ast_expression*)parser_const_float_1(parser));
906 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
908 (ast_expression*)parser_const_float_1(parser));
911 case opid3('S','+','+'):
912 case opid3('S','-','-'):
914 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
915 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
916 parseerror(parser, "invalid type for suffix increment: %s", ty1);
919 if (op->id == opid3('S','+','+')) {
926 if (ast_istype(exprs[0], ast_entfield)) {
927 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
929 (ast_expression*)parser_const_float_1(parser));
931 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
933 (ast_expression*)parser_const_float_1(parser));
937 out = (ast_expression*)ast_binary_new(ctx, subop,
939 (ast_expression*)parser_const_float_1(parser));
943 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
944 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
946 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
947 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
948 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
952 if (ast_istype(exprs[0], ast_entfield))
953 assignop = type_storep_instr[exprs[0]->expression.vtype];
955 assignop = type_store_instr[exprs[0]->expression.vtype];
956 switch (exprs[0]->expression.vtype) {
958 out = (ast_expression*)ast_binstore_new(ctx, assignop,
959 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
963 out = (ast_expression*)ast_binstore_new(ctx, assignop,
964 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
968 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
969 type_name[exprs[0]->expression.vtype],
970 type_name[exprs[1]->expression.vtype]);
976 if (exprs[1]->expression.vtype != TYPE_FLOAT ||
977 !(exprs[0]->expression.vtype == TYPE_FLOAT ||
978 exprs[0]->expression.vtype == TYPE_VECTOR))
980 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
981 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
982 parseerror(parser, "invalid types used in expression: %s and %s",
986 if (ast_istype(exprs[0], ast_entfield))
987 assignop = type_storep_instr[exprs[0]->expression.vtype];
989 assignop = type_store_instr[exprs[0]->expression.vtype];
990 switch (exprs[0]->expression.vtype) {
992 out = (ast_expression*)ast_binstore_new(ctx, assignop,
993 (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
997 if (op->id == opid2('*','=')) {
998 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1001 /* there's no DIV_VF */
1002 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
1003 (ast_expression*)parser_const_float_1(parser),
1007 out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
1012 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
1013 type_name[exprs[0]->expression.vtype],
1014 type_name[exprs[1]->expression.vtype]);
1018 case opid2('&','='):
1019 case opid2('|','='):
1020 if (NotSameType(TYPE_FLOAT)) {
1021 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
1022 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
1023 parseerror(parser, "invalid types used in expression: %s and %s",
1027 if (ast_istype(exprs[0], ast_entfield))
1028 assignop = type_storep_instr[exprs[0]->expression.vtype];
1030 assignop = type_store_instr[exprs[0]->expression.vtype];
1031 out = (ast_expression*)ast_binstore_new(ctx, assignop,
1032 (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
1033 exprs[0], exprs[1]);
1039 parseerror(parser, "failed to apply operand %s", op->op);
1043 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
1044 vec_push(sy->out, syexp(ctx, out));
1048 static bool parser_close_call(parser_t *parser, shunt *sy)
1050 /* was a function call */
1051 ast_expression *fun;
1057 vec_shrinkby(sy->ops, 1);
1058 fid = sy->ops[vec_size(sy->ops)].off;
1060 /* out[fid] is the function
1061 * everything above is parameters...
1062 * 0 params = nothing
1063 * 1 params = ast_expression
1067 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
1068 parseerror(parser, "internal error: function call needs function and parameter list...");
1072 fun = sy->out[fid].out;
1074 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
1076 parseerror(parser, "out of memory");
1080 if (fid+1 == vec_size(sy->out)) {
1083 } else if (fid+2 == vec_size(sy->out)) {
1085 vec_shrinkby(sy->out, 1);
1086 params = sy->out[vec_size(sy->out)].block;
1090 vec_push(call->params, sy->out[vec_size(sy->out)].out);
1092 paramcount = vec_size(params->exprs);
1093 call->params = params->exprs;
1094 params->exprs = NULL;
1097 if (!ast_call_check_types(call))
1100 parseerror(parser, "invalid function call");
1104 /* overwrite fid, the function, with a call */
1105 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1107 if (fun->expression.vtype != TYPE_FUNCTION) {
1108 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1112 if (!fun->expression.next) {
1113 parseerror(parser, "could not determine function return type");
1116 if (vec_size(fun->expression.params) != paramcount &&
1117 !(fun->expression.variadic &&
1118 vec_size(fun->expression.params) < paramcount))
1121 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1123 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1124 if (opts_standard == COMPILER_GMQCC)
1127 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1128 " -> `%s` has been declared here: %s:%i",
1129 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1130 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1132 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1133 " -> `%s` has been declared here: %s:%i",
1134 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1135 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1141 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1142 "too %s parameters for call to %s: expected %i, got %i\n"
1143 " -> `%s` has been declared here: %s:%i",
1144 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1145 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1147 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1148 "too %s parameters for function call: expected %i, got %i\n"
1149 " -> `%s` has been declared here: %s:%i",
1150 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1151 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1159 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1161 if (!vec_size(sy->ops)) {
1162 parseerror(parser, "unmatched closing paren");
1165 /* this would for bit a + (x) because there are no operators inside (x)
1166 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1167 parseerror(parser, "empty parenthesis expression");
1171 while (vec_size(sy->ops)) {
1172 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1173 if (!parser_close_call(parser, sy))
1177 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1178 vec_shrinkby(sy->ops, 1);
1179 return !functions_only;
1181 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1184 /* pop off the parenthesis */
1185 vec_shrinkby(sy->ops, 1);
1186 /* then apply the index operator */
1187 if (!parser_sy_pop(parser, sy))
1191 if (!parser_sy_pop(parser, sy))
1197 static void parser_reclassify_token(parser_t *parser)
1200 for (i = 0; i < operator_count; ++i) {
1201 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1202 parser->tok = TOKEN_OPERATOR;
1208 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1210 ast_expression *expr = NULL;
1212 bool wantop = false;
1213 bool gotmemberof = false;
1215 /* count the parens because an if starts with one, so the
1216 * end of a condition is an unmatched closing paren
1224 parser->lex->flags.noops = false;
1226 parser_reclassify_token(parser);
1231 gotmemberof = false;
1233 parser->memberof = 0;
1235 if (parser->tok == TOKEN_IDENT)
1237 ast_expression *var;
1239 parseerror(parser, "expected operator or end of statement");
1244 if (opts_standard == COMPILER_GMQCC)
1246 if (parser->memberof == TYPE_ENTITY) {
1247 /* still get vars first since there could be a fieldpointer */
1248 var = parser_find_var(parser, parser_tokval(parser));
1250 var = parser_find_field(parser, parser_tokval(parser));
1252 else if (parser->memberof == TYPE_VECTOR)
1254 parseerror(parser, "TODO: implement effective vector member access");
1257 else if (parser->memberof) {
1258 parseerror(parser, "namespace for member not found");
1262 var = parser_find_var(parser, parser_tokval(parser));
1264 var = parser_find_var(parser, parser_tokval(parser));
1266 var = parser_find_field(parser, parser_tokval(parser));
1269 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1272 if (ast_istype(var, ast_value))
1273 ((ast_value*)var)->uses++;
1274 vec_push(sy.out, syexp(parser_ctx(parser), var));
1275 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1277 else if (parser->tok == TOKEN_FLOATCONST) {
1280 parseerror(parser, "expected operator or end of statement, got constant");
1284 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1287 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1288 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1290 else if (parser->tok == TOKEN_INTCONST) {
1293 parseerror(parser, "expected operator or end of statement, got constant");
1297 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1300 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1301 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1303 else if (parser->tok == TOKEN_STRINGCONST) {
1306 parseerror(parser, "expected operator or end of statement, got constant");
1310 val = parser_const_string(parser, parser_tokval(parser));
1313 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1314 DEBUGSHUNTDO(con_out("push string\n"));
1316 else if (parser->tok == TOKEN_VECTORCONST) {
1319 parseerror(parser, "expected operator or end of statement, got constant");
1323 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1326 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1327 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1328 parser_token(parser)->constval.v.x,
1329 parser_token(parser)->constval.v.y,
1330 parser_token(parser)->constval.v.z));
1332 else if (parser->tok == '(') {
1333 parseerror(parser, "internal error: '(' should be classified as operator");
1336 else if (parser->tok == '[') {
1337 parseerror(parser, "internal error: '[' should be classified as operator");
1340 else if (parser->tok == ')') {
1342 DEBUGSHUNTDO(con_out("do[op] )\n"));
1346 /* we do expect an operator next */
1347 /* closing an opening paren */
1348 if (!parser_close_paren(parser, &sy, false))
1351 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1355 /* allowed for function calls */
1356 if (!parser_close_paren(parser, &sy, true))
1361 else if (parser->tok == ']') {
1363 parseerror(parser, "operand expected");
1367 if (!parser_close_paren(parser, &sy, false))
1371 else if (parser->tok != TOKEN_OPERATOR) {
1373 parseerror(parser, "expected operator or end of statement");
1380 /* classify the operator */
1381 const oper_info *op;
1382 const oper_info *olast = NULL;
1384 for (o = 0; o < operator_count; ++o) {
1385 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1386 /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
1387 !strcmp(parser_tokval(parser), operators[o].op))
1392 if (o == operator_count) {
1393 /* no operator found... must be the end of the statement */
1396 /* found an operator */
1399 /* when declaring variables, a comma starts a new variable */
1400 if (op->id == opid1(',') && !parens && stopatcomma) {
1401 /* fixup the token */
1406 /* a colon without a pervious question mark cannot be a ternary */
1407 if (!ternaries && op->id == opid2(':','?')) {
1412 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1413 olast = &operators[vec_last(sy.ops).etype-1];
1416 (op->prec < olast->prec) ||
1417 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1419 if (!parser_sy_pop(parser, &sy))
1421 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1422 olast = &operators[vec_last(sy.ops).etype-1];
1427 if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) {
1428 /* for gmqcc standard: open up the namespace of the previous type */
1429 ast_expression *prevex = vec_last(sy.out).out;
1431 parseerror(parser, "unexpected member operator");
1434 if (prevex->expression.vtype == TYPE_ENTITY)
1435 parser->memberof = TYPE_ENTITY;
1436 else if (prevex->expression.vtype == TYPE_VECTOR)
1437 parser->memberof = TYPE_VECTOR;
1439 parseerror(parser, "type error: type has no members");
1445 if (op->id == opid1('(')) {
1447 size_t sycount = vec_size(sy.out);
1448 DEBUGSHUNTDO(con_out("push [op] (\n"));
1450 /* we expected an operator, this is the function-call operator */
1451 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1454 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1455 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1458 } else if (op->id == opid1('[')) {
1460 parseerror(parser, "unexpected array subscript");
1464 /* push both the operator and the paren, this makes life easier */
1465 vec_push(sy.ops, syop(parser_ctx(parser), op));
1466 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1468 } else if (op->id == opid2('?',':')) {
1470 vec_push(sy.ops, syop(parser_ctx(parser), op));
1473 } else if (op->id == opid2(':','?')) {
1474 /* we don't push this operator */
1478 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1479 vec_push(sy.ops, syop(parser_ctx(parser), op));
1480 wantop = !!(op->flags & OP_SUFFIX);
1483 if (!parser_next(parser)) {
1486 if (parser->tok == ';' ||
1487 (!parens && parser->tok == ']'))
1493 while (vec_size(sy.ops)) {
1494 if (!parser_sy_pop(parser, &sy))
1498 parser->lex->flags.noops = true;
1499 if (!vec_size(sy.out)) {
1500 parseerror(parser, "empty expression");
1503 expr = sy.out[0].out;
1506 DEBUGSHUNTDO(con_out("shunt done\n"));
1510 parser->lex->flags.noops = true;
1516 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1518 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1521 if (!parser_next(parser)) {
1528 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1531 ast_expression *cond, *ontrue, *onfalse = NULL;
1534 lex_ctx ctx = parser_ctx(parser);
1536 (void)block; /* not touching */
1538 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1539 if (!parser_next(parser)) {
1540 parseerror(parser, "expected condition or 'not'");
1543 if (parser->tok == TOKEN_KEYWORD && !strcmp(parser_tokval(parser), "not")) {
1545 if (!parser_next(parser)) {
1546 parseerror(parser, "expected condition in parenthesis");
1550 if (parser->tok != '(') {
1551 parseerror(parser, "expected 'if' condition in parenthesis");
1554 /* parse into the expression */
1555 if (!parser_next(parser)) {
1556 parseerror(parser, "expected 'if' condition after opening paren");
1559 /* parse the condition */
1560 cond = parse_expression_leave(parser, false);
1564 if (parser->tok != ')') {
1565 parseerror(parser, "expected closing paren after 'if' condition");
1569 /* parse into the 'then' branch */
1570 if (!parser_next(parser)) {
1571 parseerror(parser, "expected statement for on-true branch of 'if'");
1575 ontrue = parse_statement_or_block(parser);
1580 /* check for an else */
1581 if (!strcmp(parser_tokval(parser), "else")) {
1582 /* parse into the 'else' branch */
1583 if (!parser_next(parser)) {
1584 parseerror(parser, "expected on-false branch after 'else'");
1589 onfalse = parse_statement_or_block(parser);
1598 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
1600 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1601 *out = (ast_expression*)ifthen;
1605 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1608 ast_expression *cond, *ontrue;
1610 lex_ctx ctx = parser_ctx(parser);
1612 (void)block; /* not touching */
1614 /* skip the 'while' and check for opening paren */
1615 if (!parser_next(parser) || parser->tok != '(') {
1616 parseerror(parser, "expected 'while' condition in parenthesis");
1619 /* parse into the expression */
1620 if (!parser_next(parser)) {
1621 parseerror(parser, "expected 'while' condition after opening paren");
1624 /* parse the condition */
1625 cond = parse_expression_leave(parser, false);
1629 if (parser->tok != ')') {
1630 parseerror(parser, "expected closing paren after 'while' condition");
1634 /* parse into the 'then' branch */
1635 if (!parser_next(parser)) {
1636 parseerror(parser, "expected while-loop body");
1640 ontrue = parse_statement_or_block(parser);
1646 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1647 *out = (ast_expression*)aloop;
1651 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1654 ast_expression *cond, *ontrue;
1656 lex_ctx ctx = parser_ctx(parser);
1658 (void)block; /* not touching */
1660 /* skip the 'do' and get the body */
1661 if (!parser_next(parser)) {
1662 parseerror(parser, "expected loop body");
1665 ontrue = parse_statement_or_block(parser);
1669 /* expect the "while" */
1670 if (parser->tok != TOKEN_KEYWORD ||
1671 strcmp(parser_tokval(parser), "while"))
1673 parseerror(parser, "expected 'while' and condition");
1678 /* skip the 'while' and check for opening paren */
1679 if (!parser_next(parser) || parser->tok != '(') {
1680 parseerror(parser, "expected 'while' condition in parenthesis");
1684 /* parse into the expression */
1685 if (!parser_next(parser)) {
1686 parseerror(parser, "expected 'while' condition after opening paren");
1690 /* parse the condition */
1691 cond = parse_expression_leave(parser, false);
1695 if (parser->tok != ')') {
1696 parseerror(parser, "expected closing paren after 'while' condition");
1702 if (!parser_next(parser) || parser->tok != ';') {
1703 parseerror(parser, "expected semicolon after condition");
1709 if (!parser_next(parser)) {
1710 parseerror(parser, "parse error");
1716 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1717 *out = (ast_expression*)aloop;
1721 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1724 ast_expression *initexpr, *cond, *increment, *ontrue;
1725 size_t oldblocklocal;
1728 lex_ctx ctx = parser_ctx(parser);
1730 oldblocklocal = parser->blocklocal;
1731 parser->blocklocal = vec_size(parser->locals);
1738 /* skip the 'while' and check for opening paren */
1739 if (!parser_next(parser) || parser->tok != '(') {
1740 parseerror(parser, "expected 'for' expressions in parenthesis");
1743 /* parse into the expression */
1744 if (!parser_next(parser)) {
1745 parseerror(parser, "expected 'for' initializer after opening paren");
1749 if (parser->tok == TOKEN_TYPENAME) {
1750 if (opts_standard != COMPILER_GMQCC) {
1751 if (parsewarning(parser, WARN_EXTENSIONS,
1752 "current standard does not allow variable declarations in for-loop initializers"))
1756 parseerror(parser, "TODO: assignment of new variables to be non-const");
1758 if (!parse_variable(parser, block, true))
1761 else if (parser->tok != ';')
1763 initexpr = parse_expression_leave(parser, false);
1768 /* move on to condition */
1769 if (parser->tok != ';') {
1770 parseerror(parser, "expected semicolon after for-loop initializer");
1773 if (!parser_next(parser)) {
1774 parseerror(parser, "expected for-loop condition");
1778 /* parse the condition */
1779 if (parser->tok != ';') {
1780 cond = parse_expression_leave(parser, false);
1785 /* move on to incrementor */
1786 if (parser->tok != ';') {
1787 parseerror(parser, "expected semicolon after for-loop initializer");
1790 if (!parser_next(parser)) {
1791 parseerror(parser, "expected for-loop condition");
1795 /* parse the incrementor */
1796 if (parser->tok != ')') {
1797 increment = parse_expression_leave(parser, false);
1800 if (!ast_istype(increment, ast_store) &&
1801 !ast_istype(increment, ast_call) &&
1802 !ast_istype(increment, ast_binstore))
1804 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
1810 if (parser->tok != ')') {
1811 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1814 /* parse into the 'then' branch */
1815 if (!parser_next(parser)) {
1816 parseerror(parser, "expected for-loop body");
1819 ontrue = parse_statement_or_block(parser);
1824 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1825 *out = (ast_expression*)aloop;
1827 while (vec_size(parser->locals) > parser->blocklocal)
1828 retval = retval && parser_pop_local(parser);
1829 parser->blocklocal = oldblocklocal;
1832 if (initexpr) ast_delete(initexpr);
1833 if (cond) ast_delete(cond);
1834 if (increment) ast_delete(increment);
1835 while (vec_size(parser->locals) > parser->blocklocal)
1836 (void)!parser_pop_local(parser);
1837 parser->blocklocal = oldblocklocal;
1841 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
1843 ast_expression *exp = NULL;
1844 ast_return *ret = NULL;
1845 ast_value *expected = parser->function->vtype;
1847 (void)block; /* not touching */
1849 if (!parser_next(parser)) {
1850 parseerror(parser, "expected return expression");
1854 if (parser->tok != ';') {
1855 exp = parse_expression(parser, false);
1859 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
1860 parseerror(parser, "return with invalid expression");
1863 ret = ast_return_new(exp->expression.node.context, exp);
1869 if (!parser_next(parser))
1870 parseerror(parser, "parse error");
1871 if (expected->expression.next->expression.vtype != TYPE_VOID) {
1872 if (opts_standard != COMPILER_GMQCC)
1873 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
1875 parseerror(parser, "return without value");
1877 ret = ast_return_new(parser_ctx(parser), NULL);
1879 *out = (ast_expression*)ret;
1883 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
1885 lex_ctx ctx = parser_ctx(parser);
1887 (void)block; /* not touching */
1889 if (!parser_next(parser) || parser->tok != ';') {
1890 parseerror(parser, "expected semicolon");
1894 if (!parser_next(parser))
1895 parseerror(parser, "parse error");
1897 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
1901 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
1903 ast_expression *operand;
1905 ast_switch *switchnode;
1906 ast_switch_case swcase;
1908 lex_ctx ctx = parser_ctx(parser);
1910 (void)block; /* not touching */
1912 /* parse over the opening paren */
1913 if (!parser_next(parser) || parser->tok != '(') {
1914 parseerror(parser, "expected switch operand in parenthesis");
1918 /* parse into the expression */
1919 if (!parser_next(parser)) {
1920 parseerror(parser, "expected switch operand");
1923 /* parse the operand */
1924 operand = parse_expression_leave(parser, false);
1928 if (!OPTS_FLAG(RELAXED_SWITCH)) {
1929 opval = (ast_value*)operand;
1930 if (!ast_istype(operand, ast_value) || !opval->isconst) {
1931 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
1937 switchnode = ast_switch_new(ctx, operand);
1940 if (parser->tok != ')') {
1941 ast_delete(switchnode);
1942 parseerror(parser, "expected closing paren after 'switch' operand");
1946 /* parse over the opening paren */
1947 if (!parser_next(parser) || parser->tok != '{') {
1948 ast_delete(switchnode);
1949 parseerror(parser, "expected list of cases");
1953 if (!parser_next(parser)) {
1954 ast_delete(switchnode);
1955 parseerror(parser, "expected 'case' or 'default'");
1960 while (parser->tok != '}') {
1961 ast_block *caseblock;
1963 if (parser->tok != TOKEN_KEYWORD) {
1964 ast_delete(switchnode);
1965 parseerror(parser, "expected 'case' or 'default'");
1968 if (!strcmp(parser_tokval(parser), "case")) {
1969 if (!parser_next(parser)) {
1970 ast_delete(switchnode);
1971 parseerror(parser, "expected expression for case");
1974 swcase.value = parse_expression_leave(parser, false);
1975 if (!swcase.value) {
1976 ast_delete(switchnode);
1977 parseerror(parser, "expected expression for case");
1981 else if (!strcmp(parser_tokval(parser), "default")) {
1982 swcase.value = NULL;
1983 if (!parser_next(parser)) {
1984 ast_delete(switchnode);
1985 parseerror(parser, "expected colon");
1990 /* Now the colon and body */
1991 if (parser->tok != ':') {
1992 if (swcase.value) ast_unref(swcase.value);
1993 ast_delete(switchnode);
1994 parseerror(parser, "expected colon");
1998 if (!parser_next(parser)) {
1999 if (swcase.value) ast_unref(swcase.value);
2000 ast_delete(switchnode);
2001 parseerror(parser, "expected statements or case");
2004 caseblock = ast_block_new(parser_ctx(parser));
2006 if (swcase.value) ast_unref(swcase.value);
2007 ast_delete(switchnode);
2010 swcase.code = (ast_expression*)caseblock;
2011 vec_push(switchnode->cases, swcase);
2013 ast_expression *expr;
2014 if (parser->tok == '}')
2016 if (parser->tok == TOKEN_KEYWORD) {
2017 if (!strcmp(parser_tokval(parser), "case") ||
2018 !strcmp(parser_tokval(parser), "default"))
2023 if (!parse_statement(parser, caseblock, &expr, true)) {
2024 ast_delete(switchnode);
2029 vec_push(caseblock->exprs, expr);
2034 if (parser->tok != '}') {
2035 ast_delete(switchnode);
2036 parseerror(parser, "expected closing paren of case list");
2039 if (!parser_next(parser)) {
2040 ast_delete(switchnode);
2041 parseerror(parser, "parse error after switch");
2044 *out = (ast_expression*)switchnode;
2048 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
2050 if (parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2052 /* local variable */
2054 parseerror(parser, "cannot declare a variable from here");
2057 if (opts_standard == COMPILER_QCC) {
2058 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
2061 if (!parse_variable(parser, block, false))
2066 else if (parser->tok == TOKEN_KEYWORD)
2068 if (!strcmp(parser_tokval(parser), "local"))
2071 parseerror(parser, "cannot declare a local variable here");
2074 if (!parser_next(parser)) {
2075 parseerror(parser, "expected variable declaration");
2078 if (!parse_variable(parser, block, true))
2083 else if (!strcmp(parser_tokval(parser), "return"))
2085 return parse_return(parser, block, out);
2087 else if (!strcmp(parser_tokval(parser), "if"))
2089 return parse_if(parser, block, out);
2091 else if (!strcmp(parser_tokval(parser), "while"))
2093 return parse_while(parser, block, out);
2095 else if (!strcmp(parser_tokval(parser), "do"))
2097 return parse_dowhile(parser, block, out);
2099 else if (!strcmp(parser_tokval(parser), "for"))
2101 if (opts_standard == COMPILER_QCC) {
2102 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2105 return parse_for(parser, block, out);
2107 else if (!strcmp(parser_tokval(parser), "break"))
2109 return parse_break_continue(parser, block, out, false);
2111 else if (!strcmp(parser_tokval(parser), "continue"))
2113 return parse_break_continue(parser, block, out, true);
2115 else if (!strcmp(parser_tokval(parser), "switch"))
2117 return parse_switch(parser, block, out);
2119 else if (!strcmp(parser_tokval(parser), "case") ||
2120 !strcmp(parser_tokval(parser), "default"))
2123 parseerror(parser, "unexpected 'case' label");
2128 parseerror(parser, "Unexpected keyword");
2131 else if (parser->tok == '{')
2134 inner = parse_block(parser, false);
2137 *out = (ast_expression*)inner;
2142 ast_expression *exp = parse_expression(parser, false);
2146 if (!ast_istype(exp, ast_store) &&
2147 !ast_istype(exp, ast_call) &&
2148 !ast_istype(exp, ast_binstore))
2150 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2157 static bool GMQCC_WARN parser_pop_local(parser_t *parser)
2162 ve = &vec_last(parser->locals);
2163 if (!parser->errors) {
2164 if (ast_istype(ve->var, ast_value) && !(((ast_value*)(ve->var))->uses)) {
2165 if (parsewarning(parser, WARN_UNUSED_VARIABLE, "unused variable: `%s`", ve->name))
2170 vec_pop(parser->locals);
2174 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn)
2176 size_t oldblocklocal;
2179 oldblocklocal = parser->blocklocal;
2180 parser->blocklocal = vec_size(parser->locals);
2182 if (!parser_next(parser)) { /* skip the '{' */
2183 parseerror(parser, "expected function body");
2187 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2189 ast_expression *expr;
2190 if (parser->tok == '}')
2193 if (!parse_statement(parser, block, &expr, false)) {
2194 /* parseerror(parser, "parse error"); */
2200 vec_push(block->exprs, expr);
2203 if (parser->tok != '}') {
2206 if (warnreturn && parser->function->vtype->expression.next->expression.vtype != TYPE_VOID)
2208 if (!vec_size(block->exprs) ||
2209 !ast_istype(vec_last(block->exprs), ast_return))
2211 if (parsewarning(parser, WARN_MISSING_RETURN_VALUES, "control reaches end of non-void function")) {
2217 (void)parser_next(parser);
2221 while (vec_size(parser->locals) > parser->blocklocal)
2222 retval = retval && parser_pop_local(parser);
2223 parser->blocklocal = oldblocklocal;
2227 static ast_block* parse_block(parser_t *parser, bool warnreturn)
2230 block = ast_block_new(parser_ctx(parser));
2233 if (!parse_block_into(parser, block, warnreturn)) {
2234 ast_block_delete(block);
2240 static ast_expression* parse_statement_or_block(parser_t *parser)
2242 ast_expression *expr = NULL;
2243 if (parser->tok == '{')
2244 return (ast_expression*)parse_block(parser, false);
2245 if (!parse_statement(parser, NULL, &expr, false))
2251 static bool create_vector_members(ast_value *var, varentry_t *ve)
2254 size_t len = strlen(var->name);
2256 for (i = 0; i < 3; ++i) {
2257 ve[i].var = (ast_expression*)ast_member_new(ast_ctx(var), (ast_expression*)var, i);
2261 ve[i].name = (char*)mem_a(len+3);
2263 ast_delete(ve[i].var);
2267 memcpy(ve[i].name, var->name, len);
2268 ve[i].name[len] = '_';
2269 ve[i].name[len+1] = 'x'+i;
2270 ve[i].name[len+2] = 0;
2279 ast_delete(ve[i].var);
2286 static bool parse_function_body(parser_t *parser, ast_value *var)
2288 ast_block *block = NULL;
2293 ast_expression *framenum = NULL;
2294 ast_expression *nextthink = NULL;
2295 /* None of the following have to be deleted */
2296 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2297 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2298 bool has_frame_think;
2302 has_frame_think = false;
2303 old = parser->function;
2305 if (var->expression.variadic) {
2306 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2307 "variadic function with implementation will not be able to access additional parameters"))
2313 if (parser->tok == '[') {
2314 /* got a frame definition: [ framenum, nextthink ]
2315 * this translates to:
2316 * self.frame = framenum;
2317 * self.nextthink = time + 0.1;
2318 * self.think = nextthink;
2322 fld_think = parser_find_field(parser, "think");
2323 fld_nextthink = parser_find_field(parser, "nextthink");
2324 fld_frame = parser_find_field(parser, "frame");
2325 if (!fld_think || !fld_nextthink || !fld_frame) {
2326 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2327 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2330 gbl_time = parser_find_global(parser, "time");
2331 gbl_self = parser_find_global(parser, "self");
2332 if (!gbl_time || !gbl_self) {
2333 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2334 parseerror(parser, "please declare the following globals: `time`, `self`");
2338 if (!parser_next(parser))
2341 framenum = parse_expression_leave(parser, true);
2343 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2346 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->isconst) {
2347 ast_unref(framenum);
2348 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2352 if (parser->tok != ',') {
2353 ast_unref(framenum);
2354 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2355 parseerror(parser, "Got a %i\n", parser->tok);
2359 if (!parser_next(parser)) {
2360 ast_unref(framenum);
2364 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2366 /* qc allows the use of not-yet-declared functions here
2367 * - this automatically creates a prototype */
2369 ast_value *thinkfunc;
2370 ast_expression *functype = fld_think->expression.next;
2372 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2373 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2374 ast_unref(framenum);
2375 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2379 if (!parser_next(parser)) {
2380 ast_unref(framenum);
2381 ast_delete(thinkfunc);
2385 varent.var = (ast_expression*)thinkfunc;
2386 varent.name = util_strdup(thinkfunc->name);
2387 vec_push(parser->globals, varent);
2388 nextthink = (ast_expression*)thinkfunc;
2391 nextthink = parse_expression_leave(parser, true);
2393 ast_unref(framenum);
2394 parseerror(parser, "expected a think-function in [frame,think] notation");
2399 if (!ast_istype(nextthink, ast_value)) {
2400 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2404 if (retval && parser->tok != ']') {
2405 parseerror(parser, "expected closing `]` for [frame,think] notation");
2409 if (retval && !parser_next(parser)) {
2413 if (retval && parser->tok != '{') {
2414 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2419 ast_unref(nextthink);
2420 ast_unref(framenum);
2424 has_frame_think = true;
2427 block = ast_block_new(parser_ctx(parser));
2429 parseerror(parser, "failed to allocate block");
2430 if (has_frame_think) {
2431 ast_unref(nextthink);
2432 ast_unref(framenum);
2437 if (has_frame_think) {
2439 ast_expression *self_frame;
2440 ast_expression *self_nextthink;
2441 ast_expression *self_think;
2442 ast_expression *time_plus_1;
2443 ast_store *store_frame;
2444 ast_store *store_nextthink;
2445 ast_store *store_think;
2447 ctx = parser_ctx(parser);
2448 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2449 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2450 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2452 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2453 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2455 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
2456 if (self_frame) ast_delete(self_frame);
2457 if (self_nextthink) ast_delete(self_nextthink);
2458 if (self_think) ast_delete(self_think);
2459 if (time_plus_1) ast_delete(time_plus_1);
2465 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
2466 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
2467 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
2470 ast_delete(self_frame);
2473 if (!store_nextthink) {
2474 ast_delete(self_nextthink);
2478 ast_delete(self_think);
2482 if (store_frame) ast_delete(store_frame);
2483 if (store_nextthink) ast_delete(store_nextthink);
2484 if (store_think) ast_delete(store_think);
2487 vec_push(block->exprs, (ast_expression*)store_frame);
2488 vec_push(block->exprs, (ast_expression*)store_nextthink);
2489 vec_push(block->exprs, (ast_expression*)store_think);
2493 parseerror(parser, "failed to generate code for [frame,think]");
2494 ast_unref(nextthink);
2495 ast_unref(framenum);
2501 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
2504 ast_value *param = var->expression.params[parami];
2506 if (param->expression.vtype != TYPE_VECTOR &&
2507 (param->expression.vtype != TYPE_FIELD ||
2508 param->expression.next->expression.vtype != TYPE_VECTOR))
2513 if (!create_vector_members(param, ve)) {
2514 ast_block_delete(block);
2518 for (e = 0; e < 3; ++e) {
2519 vec_push(parser->locals, ve[e]);
2520 ast_block_collect(block, ve[e].var);
2521 ve[e].var = NULL; /* collected */
2525 func = ast_function_new(ast_ctx(var), var->name, var);
2527 parseerror(parser, "failed to allocate function for `%s`", var->name);
2528 ast_block_delete(block);
2531 vec_push(parser->functions, func);
2533 parser->function = func;
2534 if (!parse_block_into(parser, block, true)) {
2535 ast_block_delete(block);
2539 vec_push(func->blocks, block);
2541 parser->function = old;
2542 while (vec_size(parser->locals))
2543 retval = retval && parser_pop_local(parser);
2545 if (parser->tok == ';')
2546 return parser_next(parser);
2547 else if (opts_standard == COMPILER_QCC)
2548 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
2552 vec_pop(parser->functions);
2553 ast_function_delete(func);
2554 var->constval.vfunc = NULL;
2557 while (vec_size(parser->locals)) {
2558 mem_d(vec_last(parser->locals).name);
2559 vec_pop(parser->locals);
2561 parser->function = old;
2565 static ast_expression *array_accessor_split(
2570 ast_expression *left,
2571 ast_expression *right
2577 lex_ctx ctx = ast_ctx(array);
2579 if (!left || !right) {
2580 if (left) ast_delete(left);
2581 if (right) ast_delete(right);
2585 cmp = ast_binary_new(ctx, INSTR_LT,
2586 (ast_expression*)index,
2587 (ast_expression*)parser_const_float(parser, middle));
2591 parseerror(parser, "internal error: failed to create comparison for array setter");
2595 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
2597 ast_delete(cmp); /* will delete left and right */
2598 parseerror(parser, "internal error: failed to create conditional jump for array setter");
2602 return (ast_expression*)ifthen;
2605 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
2607 lex_ctx ctx = ast_ctx(array);
2609 if (from+1 == afterend) {
2610 /* set this value */
2613 ast_array_index *subscript;
2615 int assignop = type_store_instr[value->expression.vtype];
2617 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2618 assignop = INSTR_STORE_V;
2620 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2624 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
2626 ast_delete(subscript);
2630 block = ast_block_new(ctx);
2636 vec_push(block->exprs, (ast_expression*)st);
2638 ret = ast_return_new(ctx, NULL);
2644 vec_push(block->exprs, (ast_expression*)ret);
2646 return (ast_expression*)block;
2648 ast_expression *left, *right;
2649 size_t diff = afterend - from;
2650 size_t middle = from + diff/2;
2651 left = array_setter_node(parser, array, index, value, from, middle);
2652 right = array_setter_node(parser, array, index, value, middle, afterend);
2653 return array_accessor_split(parser, array, index, middle, left, right);
2657 static ast_expression *array_field_setter_node(
2666 lex_ctx ctx = ast_ctx(array);
2668 if (from+1 == afterend) {
2669 /* set this value */
2672 ast_entfield *entfield;
2673 ast_array_index *subscript;
2675 int assignop = type_storep_instr[value->expression.vtype];
2677 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2678 assignop = INSTR_STOREP_V;
2680 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2684 entfield = ast_entfield_new_force(ctx,
2685 (ast_expression*)entity,
2686 (ast_expression*)subscript,
2687 (ast_expression*)subscript);
2689 ast_delete(subscript);
2693 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
2695 ast_delete(entfield);
2699 block = ast_block_new(ctx);
2705 vec_push(block->exprs, (ast_expression*)st);
2707 ret = ast_return_new(ctx, NULL);
2713 vec_push(block->exprs, (ast_expression*)ret);
2715 return (ast_expression*)block;
2717 ast_expression *left, *right;
2718 size_t diff = afterend - from;
2719 size_t middle = from + diff/2;
2720 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
2721 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
2722 return array_accessor_split(parser, array, index, middle, left, right);
2726 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
2728 lex_ctx ctx = ast_ctx(array);
2730 if (from+1 == afterend) {
2732 ast_array_index *subscript;
2734 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2738 ret = ast_return_new(ctx, (ast_expression*)subscript);
2740 ast_delete(subscript);
2744 return (ast_expression*)ret;
2746 ast_expression *left, *right;
2747 size_t diff = afterend - from;
2748 size_t middle = from + diff/2;
2749 left = array_getter_node(parser, array, index, from, middle);
2750 right = array_getter_node(parser, array, index, middle, afterend);
2751 return array_accessor_split(parser, array, index, middle, left, right);
2755 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
2757 ast_function *func = NULL;
2758 ast_value *fval = NULL;
2759 ast_block *body = NULL;
2761 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
2763 parseerror(parser, "failed to create accessor function value");
2767 func = ast_function_new(ast_ctx(array), funcname, fval);
2770 parseerror(parser, "failed to create accessor function node");
2774 body = ast_block_new(ast_ctx(array));
2776 parseerror(parser, "failed to create block for array accessor");
2782 vec_push(func->blocks, body);
2785 vec_push(parser->accessors, fval);
2790 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
2792 ast_expression *root = NULL;
2793 ast_value *index = NULL;
2794 ast_value *value = NULL;
2798 if (!ast_istype(array->expression.next, ast_value)) {
2799 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2803 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2805 func = fval->constval.vfunc;
2806 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2808 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2809 value = ast_value_copy((ast_value*)array->expression.next);
2811 if (!index || !value) {
2812 parseerror(parser, "failed to create locals for array accessor");
2815 (void)!ast_value_set_name(value, "value"); /* not important */
2816 vec_push(fval->expression.params, index);
2817 vec_push(fval->expression.params, value);
2819 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
2821 parseerror(parser, "failed to build accessor search tree");
2825 vec_push(func->blocks[0]->exprs, root);
2826 array->setter = fval;
2829 if (index) ast_delete(index);
2830 if (value) ast_delete(value);
2831 if (root) ast_delete(root);
2837 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
2839 ast_expression *root = NULL;
2840 ast_value *entity = NULL;
2841 ast_value *index = NULL;
2842 ast_value *value = NULL;
2846 if (!ast_istype(array->expression.next, ast_value)) {
2847 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2851 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2853 func = fval->constval.vfunc;
2854 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2856 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
2857 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2858 value = ast_value_copy((ast_value*)array->expression.next);
2859 if (!entity || !index || !value) {
2860 parseerror(parser, "failed to create locals for array accessor");
2863 (void)!ast_value_set_name(value, "value"); /* not important */
2864 vec_push(fval->expression.params, entity);
2865 vec_push(fval->expression.params, index);
2866 vec_push(fval->expression.params, value);
2868 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
2870 parseerror(parser, "failed to build accessor search tree");
2874 vec_push(func->blocks[0]->exprs, root);
2875 array->setter = fval;
2878 if (entity) ast_delete(entity);
2879 if (index) ast_delete(index);
2880 if (value) ast_delete(value);
2881 if (root) ast_delete(root);
2887 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
2889 ast_expression *root = NULL;
2890 ast_value *index = NULL;
2894 /* NOTE: checking array->expression.next rather than elemtype since
2895 * for fields elemtype is a temporary fieldtype.
2897 if (!ast_istype(array->expression.next, ast_value)) {
2898 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2902 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2904 func = fval->constval.vfunc;
2905 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
2907 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2910 parseerror(parser, "failed to create locals for array accessor");
2913 vec_push(fval->expression.params, index);
2915 root = array_getter_node(parser, array, index, 0, array->expression.count);
2917 parseerror(parser, "failed to build accessor search tree");
2921 vec_push(func->blocks[0]->exprs, root);
2922 array->getter = fval;
2925 if (index) ast_delete(index);
2926 if (root) ast_delete(root);
2932 static ast_value *parse_typename(parser_t *parser, ast_value **storebase);
2933 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
2941 bool variadic = false;
2943 ctx = parser_ctx(parser);
2945 /* for the sake of less code we parse-in in this function */
2946 if (!parser_next(parser)) {
2947 parseerror(parser, "expected parameter list");
2953 /* parse variables until we hit a closing paren */
2954 while (parser->tok != ')') {
2956 /* there must be commas between them */
2957 if (parser->tok != ',') {
2958 parseerror(parser, "expected comma or end of parameter list");
2961 if (!parser_next(parser)) {
2962 parseerror(parser, "expected parameter");
2968 if (parser->tok == TOKEN_DOTS) {
2969 /* '...' indicates a varargs function */
2971 if (!parser_next(parser)) {
2972 parseerror(parser, "expected parameter");
2975 if (parser->tok != ')') {
2976 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
2982 /* for anything else just parse a typename */
2983 param = parse_typename(parser, NULL);
2986 vec_push(params, param);
2987 if (param->expression.vtype >= TYPE_VARIANT) {
2988 char typename[1024];
2989 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
2990 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
2997 if (vec_size(params) > 8 && opts_standard == COMPILER_QCC)
2998 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
3001 if (!parser_next(parser)) {
3002 parseerror(parser, "parse error after typename");
3006 /* now turn 'var' into a function type */
3007 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
3008 fval->expression.next = (ast_expression*)var;
3009 fval->expression.variadic = variadic;
3012 var->expression.params = params;
3019 for (i = 0; i < vec_size(params); ++i)
3020 ast_delete(params[i]);
3025 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
3027 ast_expression *cexp;
3028 ast_value *cval, *tmp;
3031 ctx = parser_ctx(parser);
3033 if (!parser_next(parser)) {
3035 parseerror(parser, "expected array-size");
3039 cexp = parse_expression_leave(parser, true);
3041 if (!cexp || !ast_istype(cexp, ast_value)) {
3045 parseerror(parser, "expected array-size as constant positive integer");
3048 cval = (ast_value*)cexp;
3050 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
3051 tmp->expression.next = (ast_expression*)var;
3054 if (cval->expression.vtype == TYPE_INTEGER)
3055 tmp->expression.count = cval->constval.vint;
3056 else if (cval->expression.vtype == TYPE_FLOAT)
3057 tmp->expression.count = cval->constval.vfloat;
3061 parseerror(parser, "array-size must be a positive integer constant");
3066 if (parser->tok != ']') {
3068 parseerror(parser, "expected ']' after array-size");
3071 if (!parser_next(parser)) {
3073 parseerror(parser, "error after parsing array size");
3079 /* Parse a complete typename.
3080 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
3081 * but when parsing variables separated by comma
3082 * 'storebase' should point to where the base-type should be kept.
3083 * The base type makes up every bit of type information which comes *before* the
3086 * The following will be parsed in its entirety:
3088 * The 'basetype' in this case is 'void()'
3089 * and if there's a comma after it, say:
3091 * then the type-information 'void()' can be stored in 'storebase'
3093 static ast_value *parse_typename(parser_t *parser, ast_value **storebase)
3095 ast_value *var, *tmp;
3098 const char *name = NULL;
3099 bool isfield = false;
3100 bool wasarray = false;
3102 ctx = parser_ctx(parser);
3104 /* types may start with a dot */
3105 if (parser->tok == '.') {
3107 /* if we parsed a dot we need a typename now */
3108 if (!parser_next(parser)) {
3109 parseerror(parser, "expected typename for field definition");
3112 if (parser->tok != TOKEN_TYPENAME) {
3113 parseerror(parser, "expected typename");
3118 /* generate the basic type value */
3119 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3120 /* do not yet turn into a field - remember:
3121 * .void() foo; is a field too
3122 * .void()() foo; is a function
3126 if (!parser_next(parser)) {
3128 parseerror(parser, "parse error after typename");
3132 /* an opening paren now starts the parameter-list of a function
3133 * this is where original-QC has parameter lists.
3134 * We allow a single parameter list here.
3135 * Much like fteqcc we don't allow `float()() x`
3137 if (parser->tok == '(') {
3138 var = parse_parameter_list(parser, var);
3143 /* store the base if requested */
3145 *storebase = ast_value_copy(var);
3147 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3148 tmp->expression.next = (ast_expression*)*storebase;
3153 /* there may be a name now */
3154 if (parser->tok == TOKEN_IDENT) {
3155 name = util_strdup(parser_tokval(parser));
3157 if (!parser_next(parser)) {
3159 parseerror(parser, "error after variable or field declaration");
3164 /* now this may be an array */
3165 if (parser->tok == '[') {
3167 var = parse_arraysize(parser, var);
3172 /* This is the point where we can turn it into a field */
3174 /* turn it into a field if desired */
3175 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3176 tmp->expression.next = (ast_expression*)var;
3180 /* now there may be function parens again */
3181 if (parser->tok == '(' && opts_standard == COMPILER_QCC)
3182 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3183 if (parser->tok == '(' && wasarray)
3184 parseerror(parser, "arrays as part of a return type is not supported");
3185 while (parser->tok == '(') {
3186 var = parse_parameter_list(parser, var);
3195 /* finally name it */
3197 if (!ast_value_set_name(var, name)) {
3199 parseerror(parser, "internal error: failed to set name");
3202 /* free the name, ast_value_set_name duplicates */
3209 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields)
3213 ast_expression *old;
3217 ast_value *basetype = NULL;
3219 bool isparam = false;
3220 bool isvector = false;
3221 bool cleanvar = true;
3222 bool wasarray = false;
3224 varentry_t varent, ve[3];
3226 /* get the first complete variable */
3227 var = parse_typename(parser, &basetype);
3230 ast_delete(basetype);
3234 memset(&varent, 0, sizeof(varent));
3235 memset(&ve, 0, sizeof(ve));
3241 /* Part 0: finish the type */
3242 if (parser->tok == '(') {
3243 if (opts_standard == COMPILER_QCC)
3244 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3245 var = parse_parameter_list(parser, var);
3251 /* we only allow 1-dimensional arrays */
3252 if (parser->tok == '[') {
3254 var = parse_arraysize(parser, var);
3260 if (parser->tok == '(' && wasarray) {
3261 parseerror(parser, "arrays as part of a return type is not supported");
3262 /* we'll still parse the type completely for now */
3264 /* for functions returning functions */
3265 while (parser->tok == '(') {
3266 if (opts_standard == COMPILER_QCC)
3267 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3268 var = parse_parameter_list(parser, var);
3276 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3277 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3278 * is then filled with the previous definition and the parameter-names replaced.
3281 /* Deal with end_sys_ vars */
3283 if (!strcmp(var->name, "end_sys_globals")) {
3284 parser->crc_globals = vec_size(parser->globals);
3287 else if (!strcmp(var->name, "end_sys_fields")) {
3288 parser->crc_fields = vec_size(parser->fields);
3291 if (was_end && var->expression.vtype == TYPE_FIELD) {
3292 if (parsewarning(parser, WARN_END_SYS_FIELDS,
3293 "global '%s' hint should not be a field",
3294 parser_tokval(parser)))
3301 if (!nofields && var->expression.vtype == TYPE_FIELD)
3303 /* deal with field declarations */
3304 old = parser_find_field(parser, var->name);
3306 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
3307 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
3316 parseerror(parser, "field `%s` already declared here: %s:%i",
3317 var->name, ast_ctx(old).file, ast_ctx(old).line);
3322 if (opts_standard == COMPILER_QCC &&
3323 (old = parser_find_global(parser, var->name)))
3325 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3326 parseerror(parser, "field `%s` already declared here: %s:%i",
3327 var->name, ast_ctx(old).file, ast_ctx(old).line);
3334 /* deal with other globals */
3335 old = parser_find_global(parser, var->name);
3336 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
3338 /* This is a function which had a prototype */
3339 if (!ast_istype(old, ast_value)) {
3340 parseerror(parser, "internal error: prototype is not an ast_value");
3344 proto = (ast_value*)old;
3345 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
3346 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
3348 ast_ctx(proto).file, ast_ctx(proto).line);
3352 /* we need the new parameter-names */
3353 for (i = 0; i < vec_size(proto->expression.params); ++i)
3354 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
3362 parseerror(parser, "global `%s` already declared here: %s:%i",
3363 var->name, ast_ctx(old).file, ast_ctx(old).line);
3367 if (opts_standard == COMPILER_QCC &&
3368 (old = parser_find_field(parser, var->name)))
3370 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3371 parseerror(parser, "global `%s` already declared here: %s:%i",
3372 var->name, ast_ctx(old).file, ast_ctx(old).line);
3379 else /* it's not a global */
3381 old = parser_find_local(parser, var->name, parser->blocklocal, &isparam);
3382 if (old && !isparam) {
3383 parseerror(parser, "local `%s` already declared here: %s:%i",
3384 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3388 old = parser_find_local(parser, var->name, 0, &isparam);
3389 if (old && isparam) {
3390 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
3391 "local `%s` is shadowing a parameter", var->name))
3393 parseerror(parser, "local `%s` already declared here: %s:%i",
3394 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3398 if (opts_standard != COMPILER_GMQCC) {
3407 * Create the global/local, and deal with vector types.
3410 if (var->expression.vtype == TYPE_VECTOR)
3412 else if (var->expression.vtype == TYPE_FIELD &&
3413 var->expression.next->expression.vtype == TYPE_VECTOR)
3417 if (!create_vector_members(var, ve)) {
3423 varent.name = util_strdup(var->name);
3424 varent.var = (ast_expression*)var;
3427 /* deal with global variables, fields, functions */
3428 if (!nofields && var->expression.vtype == TYPE_FIELD) {
3429 vec_push(parser->fields, varent);
3431 for (i = 0; i < 3; ++i)
3432 vec_push(parser->fields, ve[i]);
3436 vec_push(parser->globals, varent);
3438 for (i = 0; i < 3; ++i)
3439 vec_push(parser->globals, ve[i]);
3443 vec_push(parser->locals, varent);
3444 vec_push(localblock->locals, var);
3446 for (i = 0; i < 3; ++i) {
3447 vec_push(parser->locals, ve[i]);
3448 ast_block_collect(localblock, ve[i].var);
3449 ve[i].var = NULL; /* from here it's being collected in the block */
3455 ve[0].name = ve[1].name = ve[2].name = NULL;
3456 ve[0].var = ve[1].var = ve[2].var = NULL;
3462 if (var->expression.vtype == TYPE_ARRAY) {
3464 snprintf(name, sizeof(name), "%s##SET", var->name);
3465 if (!parser_create_array_setter(parser, var, name))
3467 snprintf(name, sizeof(name), "%s##GET", var->name);
3468 if (!parser_create_array_getter(parser, var, var->expression.next, name))
3471 else if (!localblock && !nofields &&
3472 var->expression.vtype == TYPE_FIELD &&
3473 var->expression.next->expression.vtype == TYPE_ARRAY)
3476 ast_expression *telem;
3478 ast_value *array = (ast_value*)var->expression.next;
3480 if (!ast_istype(var->expression.next, ast_value)) {
3481 parseerror(parser, "internal error: field element type must be an ast_value");
3485 snprintf(name, sizeof(name), "%s##SETF", var->name);
3486 if (!parser_create_array_field_setter(parser, array, name))
3489 telem = ast_type_copy(ast_ctx(var), array->expression.next);
3490 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
3491 tfield->expression.next = telem;
3492 snprintf(name, sizeof(name), "%s##GETFP", var->name);
3493 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
3501 if (parser->tok == ';') {
3502 ast_delete(basetype);
3503 if (!parser_next(parser)) {
3504 parseerror(parser, "error after variable declaration");
3510 if (parser->tok == ',')
3513 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
3514 parseerror(parser, "missing comma or semicolon while parsing variables");
3518 if (localblock && opts_standard == COMPILER_QCC) {
3519 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
3520 "initializing expression turns variable `%s` into a constant in this standard",
3527 if (parser->tok != '{') {
3528 if (parser->tok != '=') {
3529 parseerror(parser, "missing semicolon or initializer");
3533 if (!parser_next(parser)) {
3534 parseerror(parser, "error parsing initializer");
3538 else if (opts_standard == COMPILER_QCC) {
3539 parseerror(parser, "expected '=' before function body in this standard");
3542 if (parser->tok == '#') {
3546 parseerror(parser, "cannot declare builtins within functions");
3549 if (var->expression.vtype != TYPE_FUNCTION) {
3550 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
3553 if (!parser_next(parser)) {
3554 parseerror(parser, "expected builtin number");
3557 if (parser->tok != TOKEN_INTCONST) {
3558 parseerror(parser, "builtin number must be an integer constant");
3561 if (parser_token(parser)->constval.i <= 0) {
3562 parseerror(parser, "builtin number must be an integer greater than zero");
3566 func = ast_function_new(ast_ctx(var), var->name, var);
3568 parseerror(parser, "failed to allocate function for `%s`", var->name);
3571 vec_push(parser->functions, func);
3573 func->builtin = -parser_token(parser)->constval.i;
3575 if (!parser_next(parser)) {
3576 parseerror(parser, "expected comma or semicolon");
3577 ast_function_delete(func);
3578 var->constval.vfunc = NULL;
3582 else if (parser->tok == '{' || parser->tok == '[')
3585 parseerror(parser, "cannot declare functions within functions");
3589 if (!parse_function_body(parser, var))
3591 ast_delete(basetype);
3594 ast_expression *cexp;
3597 cexp = parse_expression_leave(parser, true);
3602 cval = (ast_value*)cexp;
3603 if (!ast_istype(cval, ast_value) || !cval->isconst)
3604 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
3607 var->isconst = true;
3608 if (cval->expression.vtype == TYPE_STRING)
3609 var->constval.vstring = parser_strdup(cval->constval.vstring);
3611 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
3615 shunt sy = { NULL, NULL };
3616 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
3617 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
3618 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
3619 if (!parser_sy_pop(parser, &sy))
3622 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
3623 parseerror(parser, "internal error: leaked operands");
3624 vec_push(localblock->exprs, (ast_expression*)sy.out[0].out);
3632 if (parser->tok == ',') {
3633 if (!parser_next(parser)) {
3634 parseerror(parser, "expected another variable");
3638 if (parser->tok != TOKEN_IDENT) {
3639 parseerror(parser, "expected another variable");
3642 var = ast_value_copy(basetype);
3644 ast_value_set_name(var, parser_tokval(parser));
3645 if (!parser_next(parser)) {
3646 parseerror(parser, "error parsing variable declaration");
3652 if (parser->tok != ';') {
3653 parseerror(parser, "missing semicolon after variables");
3657 if (!parser_next(parser)) {
3658 parseerror(parser, "parse error after variable declaration");
3662 ast_delete(basetype);
3666 if (cleanvar && var)
3668 ast_delete(basetype);
3672 ast_delete(basetype);
3673 if (cleanvar && var)
3675 if (varent.name) mem_d(varent.name);
3676 if (ve[0].name) mem_d(ve[0].name);
3677 if (ve[1].name) mem_d(ve[1].name);
3678 if (ve[2].name) mem_d(ve[2].name);
3679 if (ve[0].var) mem_d(ve[0].var);
3680 if (ve[1].var) mem_d(ve[1].var);
3681 if (ve[2].var) mem_d(ve[2].var);
3685 static bool parser_global_statement(parser_t *parser)
3687 if (parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3689 return parse_variable(parser, NULL, false);
3691 else if (parser->tok == TOKEN_KEYWORD)
3693 /* handle 'var' and 'const' */
3694 if (!strcmp(parser_tokval(parser), "var")) {
3695 if (!parser_next(parser)) {
3696 parseerror(parser, "expected variable declaration after 'var'");
3699 return parse_variable(parser, NULL, true);
3703 else if (parser->tok == '$')
3705 if (!parser_next(parser)) {
3706 parseerror(parser, "parse error");
3712 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
3718 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
3720 return util_crc16(old, str, strlen(str));
3723 static void progdefs_crc_file(const char *str)
3725 /* write to progdefs.h here */
3729 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
3731 old = progdefs_crc_sum(old, str);
3732 progdefs_crc_file(str);
3736 static void generate_checksum(parser_t *parser)
3738 uint16_t crc = 0xFFFF;
3741 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
3742 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
3744 progdefs_crc_file("\tint\tpad;\n");
3745 progdefs_crc_file("\tint\tofs_return[3];\n");
3746 progdefs_crc_file("\tint\tofs_parm0[3];\n");
3747 progdefs_crc_file("\tint\tofs_parm1[3];\n");
3748 progdefs_crc_file("\tint\tofs_parm2[3];\n");
3749 progdefs_crc_file("\tint\tofs_parm3[3];\n");
3750 progdefs_crc_file("\tint\tofs_parm4[3];\n");
3751 progdefs_crc_file("\tint\tofs_parm5[3];\n");
3752 progdefs_crc_file("\tint\tofs_parm6[3];\n");
3753 progdefs_crc_file("\tint\tofs_parm7[3];\n");
3755 for (i = 0; i < parser->crc_globals; ++i) {
3756 if (!ast_istype(parser->globals[i].var, ast_value))
3758 switch (parser->globals[i].var->expression.vtype) {
3759 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
3760 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
3761 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
3762 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
3764 crc = progdefs_crc_both(crc, "\tint\t");
3767 crc = progdefs_crc_both(crc, parser->globals[i].name);
3768 crc = progdefs_crc_both(crc, ";\n");
3770 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
3771 for (i = 0; i < parser->crc_fields; ++i) {
3772 if (!ast_istype(parser->fields[i].var, ast_value))
3774 switch (parser->fields[i].var->expression.next->expression.vtype) {
3775 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
3776 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
3777 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
3778 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
3780 crc = progdefs_crc_both(crc, "\tint\t");
3783 crc = progdefs_crc_both(crc, parser->fields[i].name);
3784 crc = progdefs_crc_both(crc, ";\n");
3786 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
3791 static parser_t *parser;
3796 parser = (parser_t*)mem_a(sizeof(parser_t));
3800 memset(parser, 0, sizeof(*parser));
3802 for (i = 0; i < operator_count; ++i) {
3803 if (operators[i].id == opid1('=')) {
3804 parser->assign_op = operators+i;
3808 if (!parser->assign_op) {
3809 printf("internal error: initializing parser: failed to find assign operator\n");
3816 bool parser_compile()
3818 /* initial lexer/parser state */
3819 parser->lex->flags.noops = true;
3821 if (parser_next(parser))
3823 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3825 if (!parser_global_statement(parser)) {
3826 if (parser->tok == TOKEN_EOF)
3827 parseerror(parser, "unexpected eof");
3828 else if (!parser->errors)
3829 parseerror(parser, "there have been errors, bailing out");
3830 lex_close(parser->lex);
3836 parseerror(parser, "parse error");
3837 lex_close(parser->lex);
3842 lex_close(parser->lex);
3845 return !parser->errors;
3848 bool parser_compile_file(const char *filename)
3850 parser->lex = lex_open(filename);
3852 con_err("failed to open file \"%s\"\n", filename);
3855 return parser_compile();
3858 bool parser_compile_string_len(const char *name, const char *str, size_t len)
3860 parser->lex = lex_open_string(str, len, name);
3862 con_err("failed to create lexer for string \"%s\"\n", name);
3865 return parser_compile();
3868 bool parser_compile_string(const char *name, const char *str)
3870 parser->lex = lex_open_string(str, strlen(str), name);
3872 con_err("failed to create lexer for string \"%s\"\n", name);
3875 return parser_compile();
3878 void parser_cleanup()
3881 for (i = 0; i < vec_size(parser->accessors); ++i) {
3882 ast_delete(parser->accessors[i]->constval.vfunc);
3883 parser->accessors[i]->constval.vfunc = NULL;
3884 ast_delete(parser->accessors[i]);
3886 for (i = 0; i < vec_size(parser->functions); ++i) {
3887 ast_delete(parser->functions[i]);
3889 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
3890 ast_delete(parser->imm_vector[i]);
3892 for (i = 0; i < vec_size(parser->imm_string); ++i) {
3893 ast_delete(parser->imm_string[i]);
3895 for (i = 0; i < vec_size(parser->imm_float); ++i) {
3896 ast_delete(parser->imm_float[i]);
3898 for (i = 0; i < vec_size(parser->fields); ++i) {
3899 ast_delete(parser->fields[i].var);
3900 mem_d(parser->fields[i].name);
3902 for (i = 0; i < vec_size(parser->globals); ++i) {
3903 ast_delete(parser->globals[i].var);
3904 mem_d(parser->globals[i].name);
3906 vec_free(parser->accessors);
3907 vec_free(parser->functions);
3908 vec_free(parser->imm_vector);
3909 vec_free(parser->imm_string);
3910 vec_free(parser->imm_float);
3911 vec_free(parser->globals);
3912 vec_free(parser->fields);
3913 vec_free(parser->locals);
3918 bool parser_finish(const char *output)
3924 if (!parser->errors)
3926 ir = ir_builder_new("gmqcc_out");
3928 con_out("failed to allocate builder\n");
3932 for (i = 0; i < vec_size(parser->fields); ++i) {
3935 if (!ast_istype(parser->fields[i].var, ast_value))
3937 field = (ast_value*)parser->fields[i].var;
3938 isconst = field->isconst;
3939 field->isconst = false;
3940 if (!ast_global_codegen((ast_value*)field, ir, true)) {
3941 con_out("failed to generate field %s\n", field->name);
3942 ir_builder_delete(ir);
3947 ast_expression *subtype;
3948 field->isconst = true;
3949 subtype = field->expression.next;
3950 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
3951 if (subtype->expression.vtype == TYPE_FIELD)
3952 ifld->fieldtype = subtype->expression.next->expression.vtype;
3953 else if (subtype->expression.vtype == TYPE_FUNCTION)
3954 ifld->outtype = subtype->expression.next->expression.vtype;
3955 (void)!ir_value_set_field(field->ir_v, ifld);
3958 for (i = 0; i < vec_size(parser->globals); ++i) {
3960 if (!ast_istype(parser->globals[i].var, ast_value))
3962 asvalue = (ast_value*)(parser->globals[i].var);
3963 if (!asvalue->uses && !asvalue->isconst && asvalue->expression.vtype != TYPE_FUNCTION) {
3964 if (strcmp(asvalue->name, "end_sys_globals") &&
3965 strcmp(asvalue->name, "end_sys_fields"))
3967 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
3968 "unused global: `%s`", asvalue->name);
3971 if (!ast_global_codegen(asvalue, ir, false)) {
3972 con_out("failed to generate global %s\n", parser->globals[i].name);
3973 ir_builder_delete(ir);
3977 for (i = 0; i < vec_size(parser->imm_float); ++i) {
3978 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
3979 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
3980 ir_builder_delete(ir);
3984 for (i = 0; i < vec_size(parser->imm_string); ++i) {
3985 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
3986 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
3987 ir_builder_delete(ir);
3991 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
3992 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
3993 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
3994 ir_builder_delete(ir);
3998 for (i = 0; i < vec_size(parser->globals); ++i) {
4000 if (!ast_istype(parser->globals[i].var, ast_value))
4002 asvalue = (ast_value*)(parser->globals[i].var);
4003 if (asvalue->setter) {
4004 if (!ast_global_codegen(asvalue->setter, ir, false) ||
4005 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
4006 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
4008 printf("failed to generate setter for %s\n", parser->globals[i].name);
4009 ir_builder_delete(ir);
4013 if (asvalue->getter) {
4014 if (!ast_global_codegen(asvalue->getter, ir, false) ||
4015 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
4016 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
4018 printf("failed to generate getter for %s\n", parser->globals[i].name);
4019 ir_builder_delete(ir);
4024 for (i = 0; i < vec_size(parser->fields); ++i) {
4026 asvalue = (ast_value*)(parser->fields[i].var->expression.next);
4028 if (!ast_istype((ast_expression*)asvalue, ast_value))
4030 if (asvalue->expression.vtype != TYPE_ARRAY)
4032 if (asvalue->setter) {
4033 if (!ast_global_codegen(asvalue->setter, ir, false) ||
4034 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
4035 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
4037 printf("failed to generate setter for %s\n", parser->fields[i].name);
4038 ir_builder_delete(ir);
4042 if (asvalue->getter) {
4043 if (!ast_global_codegen(asvalue->getter, ir, false) ||
4044 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
4045 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
4047 printf("failed to generate getter for %s\n", parser->fields[i].name);
4048 ir_builder_delete(ir);
4053 for (i = 0; i < vec_size(parser->functions); ++i) {
4054 if (!ast_function_codegen(parser->functions[i], ir)) {
4055 con_out("failed to generate function %s\n", parser->functions[i]->name);
4056 ir_builder_delete(ir);
4061 ir_builder_dump(ir, con_out);
4062 for (i = 0; i < vec_size(parser->functions); ++i) {
4063 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
4064 con_out("failed to finalize function %s\n", parser->functions[i]->name);
4065 ir_builder_delete(ir);
4072 ir_builder_dump(ir, con_out);
4074 generate_checksum(parser);
4076 if (!ir_builder_generate(ir, output)) {
4077 con_out("*** failed to generate output file\n");
4078 ir_builder_delete(ir);
4083 ir_builder_delete(ir);
4087 con_out("*** there were compile errors\n");