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_vector_zero;
32 ast_function *function;
38 /* we store the '=' operator info */
39 const oper_info *assign_op;
41 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
42 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
43 * anything else: type error
49 static bool GMQCC_WARN parser_pop_local(parser_t *parser);
50 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields);
51 static ast_block* parse_block(parser_t *parser, bool warnreturn);
52 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn);
53 static ast_expression* parse_statement_or_block(parser_t *parser);
54 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
55 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma);
56 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma);
58 static void parseerror(parser_t *parser, const char *fmt, ...)
65 con_vprintmsg(LVL_ERROR, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "parse error", fmt, ap);
69 /* returns true if it counts as an error */
70 static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
73 int lvl = LVL_WARNING;
75 if (!OPTS_WARN(warntype))
84 con_vprintmsg(lvl, parser->lex->tok.ctx.file, parser->lex->tok.ctx.line, "warning", fmt, ap);
90 static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
93 int lvl = LVL_WARNING;
95 if (!OPTS_WARN(warntype))
102 con_vprintmsg(lvl, ctx.file, ctx.line, "warning", fmt, ap);
108 /**********************************************************************
109 * some maths used for constant folding
112 vector vec3_add(vector a, vector b)
121 vector vec3_sub(vector a, vector b)
130 qcfloat vec3_mulvv(vector a, vector b)
132 return (a.x * b.x + a.y * b.y + a.z * b.z);
135 vector vec3_mulvf(vector a, float b)
144 /**********************************************************************
148 bool parser_next(parser_t *parser)
150 /* lex_do kills the previous token */
151 parser->tok = lex_do(parser->lex);
152 if (parser->tok == TOKEN_EOF)
154 if (parser->tok >= TOKEN_ERROR) {
155 parseerror(parser, "lex error");
161 #define parser_tokval(p) ((p)->lex->tok.value)
162 #define parser_token(p) (&((p)->lex->tok))
163 #define parser_ctx(p) ((p)->lex->tok.ctx)
165 static ast_value* parser_const_float(parser_t *parser, double d)
169 for (i = 0; i < vec_size(parser->imm_float); ++i) {
170 const double compare = parser->imm_float[i]->constval.vfloat;
171 if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
172 return parser->imm_float[i];
174 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
176 out->constval.vfloat = d;
177 vec_push(parser->imm_float, out);
181 static ast_value* parser_const_float_0(parser_t *parser)
183 if (!parser->imm_float_zero)
184 parser->imm_float_zero = parser_const_float(parser, 0);
185 return parser->imm_float_zero;
188 static char *parser_strdup(const char *str)
191 /* actually dup empty strings */
192 char *out = mem_a(1);
196 return util_strdup(str);
199 static ast_value* parser_const_string(parser_t *parser, const char *str)
203 for (i = 0; i < vec_size(parser->imm_string); ++i) {
204 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
205 return parser->imm_string[i];
207 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
209 out->constval.vstring = parser_strdup(str);
210 vec_push(parser->imm_string, out);
214 static ast_value* parser_const_vector(parser_t *parser, vector v)
218 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
219 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
220 return parser->imm_vector[i];
222 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
224 out->constval.vvec = v;
225 vec_push(parser->imm_vector, out);
229 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
235 return parser_const_vector(parser, v);
238 static ast_value* parser_const_vector_0(parser_t *parser)
240 if (!parser->imm_vector_zero)
241 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
242 return parser->imm_vector_zero;
245 static ast_expression* parser_find_field(parser_t *parser, const char *name)
248 for (i = 0; i < vec_size(parser->fields); ++i) {
249 if (!strcmp(parser->fields[i].name, name))
250 return parser->fields[i].var;
255 static ast_expression* parser_find_global(parser_t *parser, const char *name)
258 for (i = 0; i < vec_size(parser->globals); ++i) {
259 if (!strcmp(parser->globals[i].name, name))
260 return parser->globals[i].var;
265 static ast_expression* parser_find_param(parser_t *parser, const char *name)
269 if (!parser->function)
271 fun = parser->function->vtype;
272 for (i = 0; i < vec_size(fun->expression.params); ++i) {
273 if (!strcmp(fun->expression.params[i]->name, name))
274 return (ast_expression*)(fun->expression.params[i]);
279 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
283 for (i = vec_size(parser->locals); i > upto;) {
285 if (!strcmp(parser->locals[i].name, name))
286 return parser->locals[i].var;
289 return parser_find_param(parser, name);
292 static ast_expression* parser_find_var(parser_t *parser, const char *name)
296 v = parser_find_local(parser, name, 0, &dummy);
297 if (!v) v = parser_find_global(parser, name);
303 size_t etype; /* 0 = expression, others are operators */
307 ast_block *block; /* for commas and function calls */
316 #define SY_PAREN_EXPR '('
317 #define SY_PAREN_FUNC 'f'
318 #define SY_PAREN_INDEX '['
320 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
331 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
335 e.out = (ast_expression*)v;
342 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
344 e.etype = 1 + (op - operators);
353 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
365 # define DEBUGSHUNTDO(x) x
367 # define DEBUGSHUNTDO(x)
370 /* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
371 * so we need to rotate it to become ent.(foo[n]).
373 static bool rotate_entfield_array_index_nodes(ast_expression **out)
375 ast_array_index *index;
376 ast_entfield *entfield;
380 ast_expression *entity;
382 lex_ctx ctx = ast_ctx(*out);
384 if (!ast_istype(*out, ast_array_index))
386 index = (ast_array_index*)*out;
388 if (!ast_istype(index->array, ast_entfield))
390 entfield = (ast_entfield*)index->array;
392 if (!ast_istype(entfield->field, ast_value))
394 field = (ast_value*)entfield->field;
397 entity = entfield->entity;
401 index = ast_array_index_new(ctx, (ast_expression*)field, sub);
402 entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
403 *out = (ast_expression*)entfield;
408 static bool parser_sy_pop(parser_t *parser, shunt *sy)
412 ast_expression *out = NULL;
413 ast_expression *exprs[3];
414 ast_block *blocks[3];
415 ast_value *asvalue[3];
416 size_t i, assignop, addop;
417 qcint generated_op = 0;
422 if (!vec_size(sy->ops)) {
423 parseerror(parser, "internal error: missing operator");
427 if (vec_last(sy->ops).paren) {
428 parseerror(parser, "unmatched parenthesis");
432 op = &operators[vec_last(sy->ops).etype - 1];
433 ctx = vec_last(sy->ops).ctx;
435 DEBUGSHUNTDO(con_out("apply %s\n", op->op));
437 if (vec_size(sy->out) < op->operands) {
438 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
439 op->op, (int)op->id);
443 vec_shrinkby(sy->ops, 1);
445 vec_shrinkby(sy->out, op->operands);
446 for (i = 0; i < op->operands; ++i) {
447 exprs[i] = sy->out[vec_size(sy->out)+i].out;
448 blocks[i] = sy->out[vec_size(sy->out)+i].block;
449 asvalue[i] = (ast_value*)exprs[i];
452 if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
453 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
457 #define NotSameType(T) \
458 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
459 exprs[0]->expression.vtype != T)
460 #define CanConstFold1(A) \
461 (ast_istype((A), ast_value) && ((ast_value*)(A))->isconst)
462 #define CanConstFold(A, B) \
463 (CanConstFold1(A) && CanConstFold1(B))
464 #define ConstV(i) (asvalue[(i)]->constval.vvec)
465 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
466 #define ConstS(i) (asvalue[(i)]->constval.vstring)
470 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
474 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
475 if (exprs[1]->expression.vtype != TYPE_FIELD) {
476 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
479 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
481 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
482 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
486 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
492 if (exprs[0]->expression.vtype != TYPE_ARRAY &&
493 !(exprs[0]->expression.vtype == TYPE_FIELD &&
494 exprs[0]->expression.next->expression.vtype == TYPE_ARRAY))
496 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
497 parseerror(parser, "cannot index value of type %s", ty1);
500 if (exprs[1]->expression.vtype != TYPE_FLOAT) {
501 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
502 parseerror(parser, "index must be of type float, not %s", ty1);
505 out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
506 if (rotate_entfield_array_index_nodes(&out))
508 if (opts_standard != COMPILER_GMQCC) {
509 /* this error doesn't need to make us bail out */
510 (void)!parsewarning(parser, WARN_EXTENSIONS,
511 "accessing array-field members of an entity without parenthesis\n"
512 " -> this is an extension from -std=gmqcc");
519 vec_push(blocks[0]->exprs, exprs[1]);
521 blocks[0] = ast_block_new(ctx);
522 vec_push(blocks[0]->exprs, exprs[0]);
523 vec_push(blocks[0]->exprs, exprs[1]);
525 if (!ast_block_set_type(blocks[0], exprs[1]))
528 vec_push(sy->out, syblock(ctx, blocks[0]));
532 switch (exprs[0]->expression.vtype) {
534 if (CanConstFold1(exprs[0]))
535 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
537 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
538 (ast_expression*)parser_const_float_0(parser),
542 if (CanConstFold1(exprs[0]))
543 out = (ast_expression*)parser_const_vector_f(parser,
544 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
546 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
547 (ast_expression*)parser_const_vector_0(parser),
551 parseerror(parser, "invalid types used in expression: cannot negate type %s",
552 type_name[exprs[0]->expression.vtype]);
558 switch (exprs[0]->expression.vtype) {
560 if (CanConstFold1(exprs[0]))
561 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
563 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
566 if (CanConstFold1(exprs[0]))
567 out = (ast_expression*)parser_const_float(parser,
568 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
570 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
573 if (CanConstFold1(exprs[0]))
574 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
576 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
578 /* we don't constant-fold NOT for these types */
580 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
583 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
586 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
587 type_name[exprs[0]->expression.vtype]);
593 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
594 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
596 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
597 type_name[exprs[0]->expression.vtype],
598 type_name[exprs[1]->expression.vtype]);
601 switch (exprs[0]->expression.vtype) {
603 if (CanConstFold(exprs[0], exprs[1]))
605 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
608 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
611 if (CanConstFold(exprs[0], exprs[1]))
612 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
614 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
617 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
618 type_name[exprs[0]->expression.vtype],
619 type_name[exprs[1]->expression.vtype]);
624 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
625 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
627 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
628 type_name[exprs[1]->expression.vtype],
629 type_name[exprs[0]->expression.vtype]);
632 switch (exprs[0]->expression.vtype) {
634 if (CanConstFold(exprs[0], exprs[1]))
635 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
637 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
640 if (CanConstFold(exprs[0], exprs[1]))
641 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
643 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
646 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
647 type_name[exprs[1]->expression.vtype],
648 type_name[exprs[0]->expression.vtype]);
653 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
654 exprs[0]->expression.vtype != TYPE_VECTOR &&
655 exprs[0]->expression.vtype != TYPE_FLOAT &&
656 exprs[1]->expression.vtype != TYPE_VECTOR &&
657 exprs[1]->expression.vtype != TYPE_FLOAT)
659 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
660 type_name[exprs[1]->expression.vtype],
661 type_name[exprs[0]->expression.vtype]);
664 switch (exprs[0]->expression.vtype) {
666 if (exprs[1]->expression.vtype == TYPE_VECTOR)
668 if (CanConstFold(exprs[0], exprs[1]))
669 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
671 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
675 if (CanConstFold(exprs[0], exprs[1]))
676 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
678 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
682 if (exprs[1]->expression.vtype == TYPE_FLOAT)
684 if (CanConstFold(exprs[0], exprs[1]))
685 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
687 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
691 if (CanConstFold(exprs[0], exprs[1]))
692 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
694 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
698 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
699 type_name[exprs[1]->expression.vtype],
700 type_name[exprs[0]->expression.vtype]);
705 if (NotSameType(TYPE_FLOAT)) {
706 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
707 type_name[exprs[0]->expression.vtype],
708 type_name[exprs[1]->expression.vtype]);
711 if (CanConstFold(exprs[0], exprs[1]))
712 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
714 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
718 parseerror(parser, "qc does not have a modulo operator");
722 if (NotSameType(TYPE_FLOAT)) {
723 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
724 type_name[exprs[0]->expression.vtype],
725 type_name[exprs[1]->expression.vtype]);
728 if (CanConstFold(exprs[0], exprs[1]))
729 out = (ast_expression*)parser_const_float(parser,
730 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
731 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
733 out = (ast_expression*)ast_binary_new(ctx,
734 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
738 parseerror(parser, "TODO: bitxor");
743 case opid3('<','<','='):
744 case opid3('>','>','='):
745 parseerror(parser, "TODO: shifts");
749 generated_op += 1; /* INSTR_OR */
751 generated_op += INSTR_AND;
752 if (NotSameType(TYPE_FLOAT)) {
753 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
754 type_name[exprs[0]->expression.vtype],
755 type_name[exprs[1]->expression.vtype]);
756 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
757 parseerror(parser, "TODO: optional early out");
760 if (opts_standard == COMPILER_GMQCC)
761 con_out("TODO: early out logic\n");
762 if (CanConstFold(exprs[0], exprs[1]))
763 out = (ast_expression*)parser_const_float(parser,
764 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
766 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
770 if (exprs[1]->expression.vtype != exprs[2]->expression.vtype) {
771 ast_type_to_string(exprs[1], ty1, sizeof(ty1));
772 ast_type_to_string(exprs[2], ty2, sizeof(ty2));
773 parseerror(parser, "iperands of ternary expression must have the same type, got %s and %s", ty1, ty2);
776 if (CanConstFold1(exprs[0]))
777 out = (ConstF(0) ? exprs[1] : exprs[2]);
779 out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
783 generated_op += 1; /* INSTR_GT */
785 generated_op += 1; /* INSTR_LT */
786 case opid2('>', '='):
787 generated_op += 1; /* INSTR_GE */
788 case opid2('<', '='):
789 generated_op += INSTR_LE;
790 if (NotSameType(TYPE_FLOAT)) {
791 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
792 type_name[exprs[0]->expression.vtype],
793 type_name[exprs[1]->expression.vtype]);
796 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
798 case opid2('!', '='):
799 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
800 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
801 type_name[exprs[0]->expression.vtype],
802 type_name[exprs[1]->expression.vtype]);
805 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
807 case opid2('=', '='):
808 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
809 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
810 type_name[exprs[0]->expression.vtype],
811 type_name[exprs[1]->expression.vtype]);
814 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
818 if (ast_istype(exprs[0], ast_entfield)) {
819 ast_expression *field = ((ast_entfield*)exprs[0])->field;
820 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
821 exprs[0]->expression.vtype == TYPE_FIELD &&
822 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
824 assignop = type_storep_instr[TYPE_VECTOR];
827 assignop = type_storep_instr[exprs[0]->expression.vtype];
828 if (!ast_compare_type(field->expression.next, exprs[1])) {
829 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
830 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
831 if (opts_standard == COMPILER_QCC &&
832 field->expression.next->expression.vtype == TYPE_FUNCTION &&
833 exprs[1]->expression.vtype == TYPE_FUNCTION)
835 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
836 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
842 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
847 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
848 exprs[0]->expression.vtype == TYPE_FIELD &&
849 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
851 assignop = type_store_instr[TYPE_VECTOR];
854 assignop = type_store_instr[exprs[0]->expression.vtype];
857 if (assignop == AINSTR_END) {
858 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
859 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
860 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
862 else if (!ast_compare_type(exprs[0], exprs[1])) {
863 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
864 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
865 if (opts_standard == COMPILER_QCC &&
866 exprs[0]->expression.vtype == TYPE_FUNCTION &&
867 exprs[1]->expression.vtype == TYPE_FUNCTION)
869 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
870 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
876 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
879 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
881 case opid3('+','+','P'):
882 case opid3('-','-','P'):
884 if (exprs[0]->expression.vtype != TYPE_FLOAT) {
885 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
886 parseerror(parser, "invalid type for prefix increment: %s", ty1);
889 if (op->id == opid3('+','+','P'))
893 if (ast_istype(exprs[0], ast_entfield)) {
894 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
896 (ast_expression*)parser_const_float(parser, 1));
898 out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
900 (ast_expression*)parser_const_float(parser, 1));
905 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
906 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
908 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
909 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
910 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
914 if (ast_istype(exprs[0], ast_entfield))
915 assignop = type_storep_instr[exprs[0]->expression.vtype];
917 assignop = type_store_instr[exprs[0]->expression.vtype];
918 switch (exprs[0]->expression.vtype) {
920 out = (ast_expression*)ast_binstore_new(ctx, assignop,
921 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
925 out = (ast_expression*)ast_binstore_new(ctx, assignop,
926 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
930 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
931 type_name[exprs[0]->expression.vtype],
932 type_name[exprs[1]->expression.vtype]);
940 parseerror(parser, "failed to apply operand %s", op->op);
944 DEBUGSHUNTDO(con_out("applied %s\n", op->op));
945 vec_push(sy->out, syexp(ctx, out));
949 static bool parser_close_call(parser_t *parser, shunt *sy)
951 /* was a function call */
958 vec_shrinkby(sy->ops, 1);
959 fid = sy->ops[vec_size(sy->ops)].off;
961 /* out[fid] is the function
962 * everything above is parameters...
964 * 1 params = ast_expression
968 if (vec_size(sy->out) < 1 || vec_size(sy->out) <= fid) {
969 parseerror(parser, "internal error: function call needs function and parameter list...");
973 fun = sy->out[fid].out;
975 call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
977 parseerror(parser, "out of memory");
981 if (fid+1 == vec_size(sy->out)) {
984 } else if (fid+2 == vec_size(sy->out)) {
986 vec_shrinkby(sy->out, 1);
987 params = sy->out[vec_size(sy->out)].block;
991 vec_push(call->params, sy->out[vec_size(sy->out)].out);
993 paramcount = vec_size(params->exprs);
994 call->params = params->exprs;
995 params->exprs = NULL;
998 if (!ast_call_check_types(call))
1001 parseerror(parser, "invalid function call");
1005 /* overwrite fid, the function, with a call */
1006 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
1008 if (fun->expression.vtype != TYPE_FUNCTION) {
1009 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
1013 if (!fun->expression.next) {
1014 parseerror(parser, "could not determine function return type");
1017 if (vec_size(fun->expression.params) != paramcount &&
1018 !(fun->expression.variadic &&
1019 vec_size(fun->expression.params) < paramcount))
1022 const char *fewmany = (vec_size(fun->expression.params) > paramcount) ? "few" : "many";
1024 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
1025 if (opts_standard == COMPILER_GMQCC)
1028 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
1029 " -> `%s` has been declared here: %s:%i",
1030 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1031 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1033 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
1034 " -> `%s` has been declared here: %s:%i",
1035 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1036 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1042 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1043 "too %s parameters for call to %s: expected %i, got %i\n"
1044 " -> `%s` has been declared here: %s:%i",
1045 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1046 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1048 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
1049 "too %s parameters for function call: expected %i, got %i\n"
1050 " -> `%s` has been declared here: %s:%i",
1051 fewmany, fval->name, (int)vec_size(fun->expression.params), (int)paramcount,
1052 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
1060 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
1062 if (!vec_size(sy->ops)) {
1063 parseerror(parser, "unmatched closing paren");
1066 /* this would for bit a + (x) because there are no operators inside (x)
1067 if (sy->ops[vec_size(sy->ops)-1].paren == 1) {
1068 parseerror(parser, "empty parenthesis expression");
1072 while (vec_size(sy->ops)) {
1073 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_FUNC) {
1074 if (!parser_close_call(parser, sy))
1078 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_EXPR) {
1079 vec_shrinkby(sy->ops, 1);
1080 return !functions_only;
1082 if (sy->ops[vec_size(sy->ops)-1].paren == SY_PAREN_INDEX) {
1085 /* pop off the parenthesis */
1086 vec_shrinkby(sy->ops, 1);
1087 /* then apply the index operator */
1088 if (!parser_sy_pop(parser, sy))
1092 if (!parser_sy_pop(parser, sy))
1098 static void parser_reclassify_token(parser_t *parser)
1101 for (i = 0; i < operator_count; ++i) {
1102 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1103 parser->tok = TOKEN_OPERATOR;
1109 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1111 ast_expression *expr = NULL;
1113 bool wantop = false;
1114 bool gotmemberof = false;
1116 /* count the parens because an if starts with one, so the
1117 * end of a condition is an unmatched closing paren
1125 parser->lex->flags.noops = false;
1127 parser_reclassify_token(parser);
1132 gotmemberof = false;
1134 parser->memberof = 0;
1136 if (parser->tok == TOKEN_IDENT)
1138 ast_expression *var;
1140 parseerror(parser, "expected operator or end of statement");
1145 if (opts_standard == COMPILER_GMQCC)
1147 if (parser->memberof == TYPE_ENTITY) {
1148 /* still get vars first since there could be a fieldpointer */
1149 var = parser_find_var(parser, parser_tokval(parser));
1151 var = parser_find_field(parser, parser_tokval(parser));
1153 else if (parser->memberof == TYPE_VECTOR)
1155 parseerror(parser, "TODO: implement effective vector member access");
1158 else if (parser->memberof) {
1159 parseerror(parser, "namespace for member not found");
1163 var = parser_find_var(parser, parser_tokval(parser));
1165 var = parser_find_var(parser, parser_tokval(parser));
1167 var = parser_find_field(parser, parser_tokval(parser));
1170 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1173 if (ast_istype(var, ast_value))
1174 ((ast_value*)var)->uses++;
1175 vec_push(sy.out, syexp(parser_ctx(parser), var));
1176 DEBUGSHUNTDO(con_out("push %s\n", parser_tokval(parser)));
1178 else if (parser->tok == TOKEN_FLOATCONST) {
1181 parseerror(parser, "expected operator or end of statement, got constant");
1185 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1188 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1189 DEBUGSHUNTDO(con_out("push %g\n", parser_token(parser)->constval.f));
1191 else if (parser->tok == TOKEN_INTCONST) {
1194 parseerror(parser, "expected operator or end of statement, got constant");
1198 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1201 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1202 DEBUGSHUNTDO(con_out("push %i\n", parser_token(parser)->constval.i));
1204 else if (parser->tok == TOKEN_STRINGCONST) {
1207 parseerror(parser, "expected operator or end of statement, got constant");
1211 val = parser_const_string(parser, parser_tokval(parser));
1214 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1215 DEBUGSHUNTDO(con_out("push string\n"));
1217 else if (parser->tok == TOKEN_VECTORCONST) {
1220 parseerror(parser, "expected operator or end of statement, got constant");
1224 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1227 vec_push(sy.out, syexp(parser_ctx(parser), (ast_expression*)val));
1228 DEBUGSHUNTDO(con_out("push '%g %g %g'\n",
1229 parser_token(parser)->constval.v.x,
1230 parser_token(parser)->constval.v.y,
1231 parser_token(parser)->constval.v.z));
1233 else if (parser->tok == '(') {
1234 parseerror(parser, "internal error: '(' should be classified as operator");
1237 else if (parser->tok == '[') {
1238 parseerror(parser, "internal error: '[' should be classified as operator");
1241 else if (parser->tok == ')') {
1243 DEBUGSHUNTDO(con_out("do[op] )\n"));
1247 /* we do expect an operator next */
1248 /* closing an opening paren */
1249 if (!parser_close_paren(parser, &sy, false))
1252 DEBUGSHUNTDO(con_out("do[nop] )\n"));
1256 /* allowed for function calls */
1257 if (!parser_close_paren(parser, &sy, true))
1262 else if (parser->tok == ']') {
1264 parseerror(parser, "operand expected");
1268 if (!parser_close_paren(parser, &sy, false))
1272 else if (parser->tok != TOKEN_OPERATOR) {
1274 parseerror(parser, "expected operator or end of statement");
1281 /* classify the operator */
1282 /* TODO: suffix operators */
1283 const oper_info *op;
1284 const oper_info *olast = NULL;
1286 for (o = 0; o < operator_count; ++o) {
1287 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1288 !(operators[o].flags & OP_SUFFIX) && /* remove this */
1289 !strcmp(parser_tokval(parser), operators[o].op))
1294 if (o == operator_count) {
1295 /* no operator found... must be the end of the statement */
1298 /* found an operator */
1301 /* when declaring variables, a comma starts a new variable */
1302 if (op->id == opid1(',') && !parens && stopatcomma) {
1303 /* fixup the token */
1308 /* a colon without a pervious question mark cannot be a ternary */
1309 if (!ternaries && op->id == opid2(':','?')) {
1314 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1315 olast = &operators[vec_last(sy.ops).etype-1];
1318 (op->prec < olast->prec) ||
1319 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1321 if (!parser_sy_pop(parser, &sy))
1323 if (vec_size(sy.ops) && !vec_last(sy.ops).paren)
1324 olast = &operators[vec_last(sy.ops).etype-1];
1329 if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) {
1330 /* for gmqcc standard: open up the namespace of the previous type */
1331 ast_expression *prevex = vec_last(sy.out).out;
1333 parseerror(parser, "unexpected member operator");
1336 if (prevex->expression.vtype == TYPE_ENTITY)
1337 parser->memberof = TYPE_ENTITY;
1338 else if (prevex->expression.vtype == TYPE_VECTOR)
1339 parser->memberof = TYPE_VECTOR;
1341 parseerror(parser, "type error: type has no members");
1347 if (op->id == opid1('(')) {
1349 size_t sycount = vec_size(sy.out);
1350 DEBUGSHUNTDO(con_out("push [op] (\n"));
1352 /* we expected an operator, this is the function-call operator */
1353 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_FUNC, sycount-1));
1356 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_EXPR, 0));
1357 DEBUGSHUNTDO(con_out("push [nop] (\n"));
1360 } else if (op->id == opid1('[')) {
1362 parseerror(parser, "unexpected array subscript");
1366 /* push both the operator and the paren, this makes life easier */
1367 vec_push(sy.ops, syop(parser_ctx(parser), op));
1368 vec_push(sy.ops, syparen(parser_ctx(parser), SY_PAREN_INDEX, 0));
1370 } else if (op->id == opid2('?',':')) {
1372 vec_push(sy.ops, syop(parser_ctx(parser), op));
1375 } else if (op->id == opid2(':','?')) {
1376 /* we don't push this operator */
1380 DEBUGSHUNTDO(con_out("push operator %s\n", op->op));
1381 vec_push(sy.ops, syop(parser_ctx(parser), op));
1385 if (!parser_next(parser)) {
1388 if (parser->tok == ';' ||
1389 (!parens && parser->tok == ']'))
1395 while (vec_size(sy.ops)) {
1396 if (!parser_sy_pop(parser, &sy))
1400 parser->lex->flags.noops = true;
1401 if (!vec_size(sy.out)) {
1402 parseerror(parser, "empty expression");
1405 expr = sy.out[0].out;
1408 DEBUGSHUNTDO(con_out("shunt done\n"));
1412 parser->lex->flags.noops = true;
1418 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1420 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1423 if (!parser_next(parser)) {
1430 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1433 ast_expression *cond, *ontrue, *onfalse = NULL;
1436 lex_ctx ctx = parser_ctx(parser);
1438 (void)block; /* not touching */
1440 /* skip the 'if', parse an optional 'not' and check for an opening paren */
1441 if (!parser_next(parser)) {
1442 parseerror(parser, "expected condition or 'not'");
1445 if (parser->tok == TOKEN_KEYWORD && !strcmp(parser_tokval(parser), "not")) {
1447 if (!parser_next(parser)) {
1448 parseerror(parser, "expected condition in parenthesis");
1452 if (parser->tok != '(') {
1453 parseerror(parser, "expected 'if' condition in parenthesis");
1456 /* parse into the expression */
1457 if (!parser_next(parser)) {
1458 parseerror(parser, "expected 'if' condition after opening paren");
1461 /* parse the condition */
1462 cond = parse_expression_leave(parser, false);
1466 if (parser->tok != ')') {
1467 parseerror(parser, "expected closing paren after 'if' condition");
1471 /* parse into the 'then' branch */
1472 if (!parser_next(parser)) {
1473 parseerror(parser, "expected statement for on-true branch of 'if'");
1477 ontrue = parse_statement_or_block(parser);
1482 /* check for an else */
1483 if (!strcmp(parser_tokval(parser), "else")) {
1484 /* parse into the 'else' branch */
1485 if (!parser_next(parser)) {
1486 parseerror(parser, "expected on-false branch after 'else'");
1491 onfalse = parse_statement_or_block(parser);
1500 ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
1502 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1503 *out = (ast_expression*)ifthen;
1507 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1510 ast_expression *cond, *ontrue;
1512 lex_ctx ctx = parser_ctx(parser);
1514 (void)block; /* not touching */
1516 /* skip the 'while' and check for opening paren */
1517 if (!parser_next(parser) || parser->tok != '(') {
1518 parseerror(parser, "expected 'while' condition in parenthesis");
1521 /* parse into the expression */
1522 if (!parser_next(parser)) {
1523 parseerror(parser, "expected 'while' condition after opening paren");
1526 /* parse the condition */
1527 cond = parse_expression_leave(parser, false);
1531 if (parser->tok != ')') {
1532 parseerror(parser, "expected closing paren after 'while' condition");
1536 /* parse into the 'then' branch */
1537 if (!parser_next(parser)) {
1538 parseerror(parser, "expected while-loop body");
1542 ontrue = parse_statement_or_block(parser);
1548 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1549 *out = (ast_expression*)aloop;
1553 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1556 ast_expression *cond, *ontrue;
1558 lex_ctx ctx = parser_ctx(parser);
1560 (void)block; /* not touching */
1562 /* skip the 'do' and get the body */
1563 if (!parser_next(parser)) {
1564 parseerror(parser, "expected loop body");
1567 ontrue = parse_statement_or_block(parser);
1571 /* expect the "while" */
1572 if (parser->tok != TOKEN_KEYWORD ||
1573 strcmp(parser_tokval(parser), "while"))
1575 parseerror(parser, "expected 'while' and condition");
1580 /* skip the 'while' and check for opening paren */
1581 if (!parser_next(parser) || parser->tok != '(') {
1582 parseerror(parser, "expected 'while' condition in parenthesis");
1586 /* parse into the expression */
1587 if (!parser_next(parser)) {
1588 parseerror(parser, "expected 'while' condition after opening paren");
1592 /* parse the condition */
1593 cond = parse_expression_leave(parser, false);
1597 if (parser->tok != ')') {
1598 parseerror(parser, "expected closing paren after 'while' condition");
1604 if (!parser_next(parser) || parser->tok != ';') {
1605 parseerror(parser, "expected semicolon after condition");
1611 if (!parser_next(parser)) {
1612 parseerror(parser, "parse error");
1618 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1619 *out = (ast_expression*)aloop;
1623 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1626 ast_expression *initexpr, *cond, *increment, *ontrue;
1627 size_t oldblocklocal;
1630 lex_ctx ctx = parser_ctx(parser);
1632 oldblocklocal = parser->blocklocal;
1633 parser->blocklocal = vec_size(parser->locals);
1640 /* skip the 'while' and check for opening paren */
1641 if (!parser_next(parser) || parser->tok != '(') {
1642 parseerror(parser, "expected 'for' expressions in parenthesis");
1645 /* parse into the expression */
1646 if (!parser_next(parser)) {
1647 parseerror(parser, "expected 'for' initializer after opening paren");
1651 if (parser->tok == TOKEN_TYPENAME) {
1652 if (opts_standard != COMPILER_GMQCC) {
1653 if (parsewarning(parser, WARN_EXTENSIONS,
1654 "current standard does not allow variable declarations in for-loop initializers"))
1658 parseerror(parser, "TODO: assignment of new variables to be non-const");
1660 if (!parse_variable(parser, block, true))
1663 else if (parser->tok != ';')
1665 initexpr = parse_expression_leave(parser, false);
1670 /* move on to condition */
1671 if (parser->tok != ';') {
1672 parseerror(parser, "expected semicolon after for-loop initializer");
1675 if (!parser_next(parser)) {
1676 parseerror(parser, "expected for-loop condition");
1680 /* parse the condition */
1681 if (parser->tok != ';') {
1682 cond = parse_expression_leave(parser, false);
1687 /* move on to incrementor */
1688 if (parser->tok != ';') {
1689 parseerror(parser, "expected semicolon after for-loop initializer");
1692 if (!parser_next(parser)) {
1693 parseerror(parser, "expected for-loop condition");
1697 /* parse the incrementor */
1698 if (parser->tok != ')') {
1699 increment = parse_expression_leave(parser, false);
1702 if (!ast_istype(increment, ast_store) &&
1703 !ast_istype(increment, ast_call) &&
1704 !ast_istype(increment, ast_binstore))
1706 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
1712 if (parser->tok != ')') {
1713 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1716 /* parse into the 'then' branch */
1717 if (!parser_next(parser)) {
1718 parseerror(parser, "expected for-loop body");
1721 ontrue = parse_statement_or_block(parser);
1726 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1727 *out = (ast_expression*)aloop;
1729 while (vec_size(parser->locals) > parser->blocklocal)
1730 retval = retval && parser_pop_local(parser);
1731 parser->blocklocal = oldblocklocal;
1734 if (initexpr) ast_delete(initexpr);
1735 if (cond) ast_delete(cond);
1736 if (increment) ast_delete(increment);
1737 while (vec_size(parser->locals) > parser->blocklocal)
1738 (void)!parser_pop_local(parser);
1739 parser->blocklocal = oldblocklocal;
1743 static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
1745 ast_expression *exp = NULL;
1746 ast_return *ret = NULL;
1747 ast_value *expected = parser->function->vtype;
1749 (void)block; /* not touching */
1751 if (!parser_next(parser)) {
1752 parseerror(parser, "expected return expression");
1756 if (parser->tok != ';') {
1757 exp = parse_expression(parser, false);
1761 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
1762 parseerror(parser, "return with invalid expression");
1765 ret = ast_return_new(exp->expression.node.context, exp);
1771 if (!parser_next(parser))
1772 parseerror(parser, "parse error");
1773 if (expected->expression.next->expression.vtype != TYPE_VOID) {
1774 if (opts_standard != COMPILER_GMQCC)
1775 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
1777 parseerror(parser, "return without value");
1779 ret = ast_return_new(parser_ctx(parser), NULL);
1781 *out = (ast_expression*)ret;
1785 static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
1787 lex_ctx ctx = parser_ctx(parser);
1789 (void)block; /* not touching */
1791 if (!parser_next(parser) || parser->tok != ';') {
1792 parseerror(parser, "expected semicolon");
1796 if (!parser_next(parser))
1797 parseerror(parser, "parse error");
1799 *out = (ast_expression*)ast_breakcont_new(ctx, is_continue);
1803 static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
1805 ast_expression *operand;
1807 ast_switch *switchnode;
1808 ast_switch_case swcase;
1810 lex_ctx ctx = parser_ctx(parser);
1812 (void)block; /* not touching */
1814 /* parse over the opening paren */
1815 if (!parser_next(parser) || parser->tok != '(') {
1816 parseerror(parser, "expected switch operand in parenthesis");
1820 /* parse into the expression */
1821 if (!parser_next(parser)) {
1822 parseerror(parser, "expected switch operand");
1825 /* parse the operand */
1826 operand = parse_expression_leave(parser, false);
1830 if (!OPTS_FLAG(RELAXED_SWITCH)) {
1831 opval = (ast_value*)operand;
1832 if (!ast_istype(operand, ast_value) || !opval->isconst) {
1833 parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
1839 switchnode = ast_switch_new(ctx, operand);
1842 if (parser->tok != ')') {
1843 ast_delete(switchnode);
1844 parseerror(parser, "expected closing paren after 'switch' operand");
1848 /* parse over the opening paren */
1849 if (!parser_next(parser) || parser->tok != '{') {
1850 ast_delete(switchnode);
1851 parseerror(parser, "expected list of cases");
1855 if (!parser_next(parser)) {
1856 ast_delete(switchnode);
1857 parseerror(parser, "expected 'case' or 'default'");
1862 while (parser->tok != '}') {
1863 ast_block *caseblock;
1865 if (parser->tok != TOKEN_KEYWORD) {
1866 ast_delete(switchnode);
1867 parseerror(parser, "expected 'case' or 'default'");
1870 if (!strcmp(parser_tokval(parser), "case")) {
1871 if (!parser_next(parser)) {
1872 ast_delete(switchnode);
1873 parseerror(parser, "expected expression for case");
1876 swcase.value = parse_expression_leave(parser, false);
1877 if (!swcase.value) {
1878 ast_delete(switchnode);
1879 parseerror(parser, "expected expression for case");
1883 else if (!strcmp(parser_tokval(parser), "default")) {
1884 swcase.value = NULL;
1885 if (!parser_next(parser)) {
1886 ast_delete(switchnode);
1887 parseerror(parser, "expected colon");
1892 /* Now the colon and body */
1893 if (parser->tok != ':') {
1894 if (swcase.value) ast_unref(swcase.value);
1895 ast_delete(switchnode);
1896 parseerror(parser, "expected colon");
1900 if (!parser_next(parser)) {
1901 if (swcase.value) ast_unref(swcase.value);
1902 ast_delete(switchnode);
1903 parseerror(parser, "expected statements or case");
1906 caseblock = ast_block_new(parser_ctx(parser));
1908 if (swcase.value) ast_unref(swcase.value);
1909 ast_delete(switchnode);
1912 swcase.code = (ast_expression*)caseblock;
1913 vec_push(switchnode->cases, swcase);
1915 ast_expression *expr;
1916 if (parser->tok == '}')
1918 if (parser->tok == TOKEN_KEYWORD) {
1919 if (!strcmp(parser_tokval(parser), "case") ||
1920 !strcmp(parser_tokval(parser), "default"))
1925 if (!parse_statement(parser, caseblock, &expr, true)) {
1926 ast_delete(switchnode);
1931 vec_push(caseblock->exprs, expr);
1936 if (parser->tok != '}') {
1937 ast_delete(switchnode);
1938 parseerror(parser, "expected closing paren of case list");
1941 if (!parser_next(parser)) {
1942 ast_delete(switchnode);
1943 parseerror(parser, "parse error after switch");
1946 *out = (ast_expression*)switchnode;
1950 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
1952 if (parser->tok == TOKEN_TYPENAME || parser->tok == '.')
1954 /* local variable */
1956 parseerror(parser, "cannot declare a variable from here");
1959 if (opts_standard == COMPILER_QCC) {
1960 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
1963 if (!parse_variable(parser, block, false))
1968 else if (parser->tok == TOKEN_KEYWORD)
1970 if (!strcmp(parser_tokval(parser), "local"))
1973 parseerror(parser, "cannot declare a local variable here");
1976 if (!parser_next(parser)) {
1977 parseerror(parser, "expected variable declaration");
1980 if (!parse_variable(parser, block, true))
1985 else if (!strcmp(parser_tokval(parser), "return"))
1987 return parse_return(parser, block, out);
1989 else if (!strcmp(parser_tokval(parser), "if"))
1991 return parse_if(parser, block, out);
1993 else if (!strcmp(parser_tokval(parser), "while"))
1995 return parse_while(parser, block, out);
1997 else if (!strcmp(parser_tokval(parser), "do"))
1999 return parse_dowhile(parser, block, out);
2001 else if (!strcmp(parser_tokval(parser), "for"))
2003 if (opts_standard == COMPILER_QCC) {
2004 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
2007 return parse_for(parser, block, out);
2009 else if (!strcmp(parser_tokval(parser), "break"))
2011 return parse_break_continue(parser, block, out, false);
2013 else if (!strcmp(parser_tokval(parser), "continue"))
2015 return parse_break_continue(parser, block, out, true);
2017 else if (!strcmp(parser_tokval(parser), "switch"))
2019 return parse_switch(parser, block, out);
2021 else if (!strcmp(parser_tokval(parser), "case") ||
2022 !strcmp(parser_tokval(parser), "default"))
2025 parseerror(parser, "unexpected 'case' label");
2030 parseerror(parser, "Unexpected keyword");
2033 else if (parser->tok == '{')
2036 inner = parse_block(parser, false);
2039 *out = (ast_expression*)inner;
2044 ast_expression *exp = parse_expression(parser, false);
2048 if (!ast_istype(exp, ast_store) &&
2049 !ast_istype(exp, ast_call) &&
2050 !ast_istype(exp, ast_binstore))
2052 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
2059 static bool GMQCC_WARN parser_pop_local(parser_t *parser)
2064 ve = &vec_last(parser->locals);
2065 if (!parser->errors) {
2066 if (ast_istype(ve->var, ast_value) && !(((ast_value*)(ve->var))->uses)) {
2067 if (parsewarning(parser, WARN_UNUSED_VARIABLE, "unused variable: `%s`", ve->name))
2072 vec_pop(parser->locals);
2076 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn)
2078 size_t oldblocklocal;
2081 oldblocklocal = parser->blocklocal;
2082 parser->blocklocal = vec_size(parser->locals);
2084 if (!parser_next(parser)) { /* skip the '{' */
2085 parseerror(parser, "expected function body");
2089 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2091 ast_expression *expr;
2092 if (parser->tok == '}')
2095 if (!parse_statement(parser, block, &expr, false)) {
2096 /* parseerror(parser, "parse error"); */
2102 vec_push(block->exprs, expr);
2105 if (parser->tok != '}') {
2108 if (warnreturn && parser->function->vtype->expression.next->expression.vtype != TYPE_VOID)
2110 if (!vec_size(block->exprs) ||
2111 !ast_istype(vec_last(block->exprs), ast_return))
2113 if (parsewarning(parser, WARN_MISSING_RETURN_VALUES, "control reaches end of non-void function")) {
2119 (void)parser_next(parser);
2123 while (vec_size(parser->locals) > parser->blocklocal)
2124 retval = retval && parser_pop_local(parser);
2125 parser->blocklocal = oldblocklocal;
2129 static ast_block* parse_block(parser_t *parser, bool warnreturn)
2132 block = ast_block_new(parser_ctx(parser));
2135 if (!parse_block_into(parser, block, warnreturn)) {
2136 ast_block_delete(block);
2142 static ast_expression* parse_statement_or_block(parser_t *parser)
2144 ast_expression *expr = NULL;
2145 if (parser->tok == '{')
2146 return (ast_expression*)parse_block(parser, false);
2147 if (!parse_statement(parser, NULL, &expr, false))
2153 static bool create_vector_members(ast_value *var, varentry_t *ve)
2156 size_t len = strlen(var->name);
2158 for (i = 0; i < 3; ++i) {
2159 ve[i].var = (ast_expression*)ast_member_new(ast_ctx(var), (ast_expression*)var, i);
2163 ve[i].name = (char*)mem_a(len+3);
2165 ast_delete(ve[i].var);
2169 memcpy(ve[i].name, var->name, len);
2170 ve[i].name[len] = '_';
2171 ve[i].name[len+1] = 'x'+i;
2172 ve[i].name[len+2] = 0;
2181 ast_delete(ve[i].var);
2188 static bool parse_function_body(parser_t *parser, ast_value *var)
2190 ast_block *block = NULL;
2195 ast_expression *framenum = NULL;
2196 ast_expression *nextthink = NULL;
2197 /* None of the following have to be deleted */
2198 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
2199 ast_expression *gbl_time = NULL, *gbl_self = NULL;
2200 bool has_frame_think;
2204 has_frame_think = false;
2205 old = parser->function;
2207 if (var->expression.variadic) {
2208 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
2209 "variadic function with implementation will not be able to access additional parameters"))
2215 if (parser->tok == '[') {
2216 /* got a frame definition: [ framenum, nextthink ]
2217 * this translates to:
2218 * self.frame = framenum;
2219 * self.nextthink = time + 0.1;
2220 * self.think = nextthink;
2224 fld_think = parser_find_field(parser, "think");
2225 fld_nextthink = parser_find_field(parser, "nextthink");
2226 fld_frame = parser_find_field(parser, "frame");
2227 if (!fld_think || !fld_nextthink || !fld_frame) {
2228 parseerror(parser, "cannot use [frame,think] notation without the required fields");
2229 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
2232 gbl_time = parser_find_global(parser, "time");
2233 gbl_self = parser_find_global(parser, "self");
2234 if (!gbl_time || !gbl_self) {
2235 parseerror(parser, "cannot use [frame,think] notation without the required globals");
2236 parseerror(parser, "please declare the following globals: `time`, `self`");
2240 if (!parser_next(parser))
2243 framenum = parse_expression_leave(parser, true);
2245 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
2248 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->isconst) {
2249 ast_unref(framenum);
2250 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
2254 if (parser->tok != ',') {
2255 ast_unref(framenum);
2256 parseerror(parser, "expected comma after frame number in [frame,think] notation");
2257 parseerror(parser, "Got a %i\n", parser->tok);
2261 if (!parser_next(parser)) {
2262 ast_unref(framenum);
2266 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
2268 /* qc allows the use of not-yet-declared functions here
2269 * - this automatically creates a prototype */
2271 ast_value *thinkfunc;
2272 ast_expression *functype = fld_think->expression.next;
2274 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
2275 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
2276 ast_unref(framenum);
2277 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
2281 if (!parser_next(parser)) {
2282 ast_unref(framenum);
2283 ast_delete(thinkfunc);
2287 varent.var = (ast_expression*)thinkfunc;
2288 varent.name = util_strdup(thinkfunc->name);
2289 vec_push(parser->globals, varent);
2290 nextthink = (ast_expression*)thinkfunc;
2293 nextthink = parse_expression_leave(parser, true);
2295 ast_unref(framenum);
2296 parseerror(parser, "expected a think-function in [frame,think] notation");
2301 if (!ast_istype(nextthink, ast_value)) {
2302 parseerror(parser, "think-function in [frame,think] notation must be a constant");
2306 if (retval && parser->tok != ']') {
2307 parseerror(parser, "expected closing `]` for [frame,think] notation");
2311 if (retval && !parser_next(parser)) {
2315 if (retval && parser->tok != '{') {
2316 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
2321 ast_unref(nextthink);
2322 ast_unref(framenum);
2326 has_frame_think = true;
2329 block = ast_block_new(parser_ctx(parser));
2331 parseerror(parser, "failed to allocate block");
2332 if (has_frame_think) {
2333 ast_unref(nextthink);
2334 ast_unref(framenum);
2339 if (has_frame_think) {
2341 ast_expression *self_frame;
2342 ast_expression *self_nextthink;
2343 ast_expression *self_think;
2344 ast_expression *time_plus_1;
2345 ast_store *store_frame;
2346 ast_store *store_nextthink;
2347 ast_store *store_think;
2349 ctx = parser_ctx(parser);
2350 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2351 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2352 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2354 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2355 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2357 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
2358 if (self_frame) ast_delete(self_frame);
2359 if (self_nextthink) ast_delete(self_nextthink);
2360 if (self_think) ast_delete(self_think);
2361 if (time_plus_1) ast_delete(time_plus_1);
2367 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
2368 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
2369 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
2372 ast_delete(self_frame);
2375 if (!store_nextthink) {
2376 ast_delete(self_nextthink);
2380 ast_delete(self_think);
2384 if (store_frame) ast_delete(store_frame);
2385 if (store_nextthink) ast_delete(store_nextthink);
2386 if (store_think) ast_delete(store_think);
2389 vec_push(block->exprs, (ast_expression*)store_frame);
2390 vec_push(block->exprs, (ast_expression*)store_nextthink);
2391 vec_push(block->exprs, (ast_expression*)store_think);
2395 parseerror(parser, "failed to generate code for [frame,think]");
2396 ast_unref(nextthink);
2397 ast_unref(framenum);
2403 for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
2406 ast_value *param = var->expression.params[parami];
2408 if (param->expression.vtype != TYPE_VECTOR &&
2409 (param->expression.vtype != TYPE_FIELD ||
2410 param->expression.next->expression.vtype != TYPE_VECTOR))
2415 if (!create_vector_members(param, ve)) {
2416 ast_block_delete(block);
2420 for (e = 0; e < 3; ++e) {
2421 vec_push(parser->locals, ve[e]);
2422 ast_block_collect(block, ve[e].var);
2423 ve[e].var = NULL; /* collected */
2427 func = ast_function_new(ast_ctx(var), var->name, var);
2429 parseerror(parser, "failed to allocate function for `%s`", var->name);
2430 ast_block_delete(block);
2433 vec_push(parser->functions, func);
2435 parser->function = func;
2436 if (!parse_block_into(parser, block, true)) {
2437 ast_block_delete(block);
2441 vec_push(func->blocks, block);
2443 parser->function = old;
2444 while (vec_size(parser->locals))
2445 retval = retval && parser_pop_local(parser);
2447 if (parser->tok == ';')
2448 return parser_next(parser);
2449 else if (opts_standard == COMPILER_QCC)
2450 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
2454 vec_pop(parser->functions);
2455 ast_function_delete(func);
2456 var->constval.vfunc = NULL;
2459 while (vec_size(parser->locals)) {
2460 mem_d(vec_last(parser->locals).name);
2461 vec_pop(parser->locals);
2463 parser->function = old;
2467 static ast_expression *array_accessor_split(
2472 ast_expression *left,
2473 ast_expression *right
2479 lex_ctx ctx = ast_ctx(array);
2481 if (!left || !right) {
2482 if (left) ast_delete(left);
2483 if (right) ast_delete(right);
2487 cmp = ast_binary_new(ctx, INSTR_LT,
2488 (ast_expression*)index,
2489 (ast_expression*)parser_const_float(parser, middle));
2493 parseerror(parser, "internal error: failed to create comparison for array setter");
2497 ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
2499 ast_delete(cmp); /* will delete left and right */
2500 parseerror(parser, "internal error: failed to create conditional jump for array setter");
2504 return (ast_expression*)ifthen;
2507 static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
2509 lex_ctx ctx = ast_ctx(array);
2511 if (from+1 == afterend) {
2512 /* set this value */
2515 ast_array_index *subscript;
2517 int assignop = type_store_instr[value->expression.vtype];
2519 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2520 assignop = INSTR_STORE_V;
2522 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2526 st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
2528 ast_delete(subscript);
2532 block = ast_block_new(ctx);
2538 vec_push(block->exprs, (ast_expression*)st);
2540 ret = ast_return_new(ctx, NULL);
2546 vec_push(block->exprs, (ast_expression*)ret);
2548 return (ast_expression*)block;
2550 ast_expression *left, *right;
2551 size_t diff = afterend - from;
2552 size_t middle = from + diff/2;
2553 left = array_setter_node(parser, array, index, value, from, middle);
2554 right = array_setter_node(parser, array, index, value, middle, afterend);
2555 return array_accessor_split(parser, array, index, middle, left, right);
2559 static ast_expression *array_field_setter_node(
2568 lex_ctx ctx = ast_ctx(array);
2570 if (from+1 == afterend) {
2571 /* set this value */
2574 ast_entfield *entfield;
2575 ast_array_index *subscript;
2577 int assignop = type_storep_instr[value->expression.vtype];
2579 if (value->expression.vtype == TYPE_FIELD && value->expression.next->expression.vtype == TYPE_VECTOR)
2580 assignop = INSTR_STOREP_V;
2582 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2586 entfield = ast_entfield_new_force(ctx,
2587 (ast_expression*)entity,
2588 (ast_expression*)subscript,
2589 (ast_expression*)subscript);
2591 ast_delete(subscript);
2595 st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
2597 ast_delete(entfield);
2601 block = ast_block_new(ctx);
2607 vec_push(block->exprs, (ast_expression*)st);
2609 ret = ast_return_new(ctx, NULL);
2615 vec_push(block->exprs, (ast_expression*)ret);
2617 return (ast_expression*)block;
2619 ast_expression *left, *right;
2620 size_t diff = afterend - from;
2621 size_t middle = from + diff/2;
2622 left = array_field_setter_node(parser, array, entity, index, value, from, middle);
2623 right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
2624 return array_accessor_split(parser, array, index, middle, left, right);
2628 static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
2630 lex_ctx ctx = ast_ctx(array);
2632 if (from+1 == afterend) {
2634 ast_array_index *subscript;
2636 subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
2640 ret = ast_return_new(ctx, (ast_expression*)subscript);
2642 ast_delete(subscript);
2646 return (ast_expression*)ret;
2648 ast_expression *left, *right;
2649 size_t diff = afterend - from;
2650 size_t middle = from + diff/2;
2651 left = array_getter_node(parser, array, index, from, middle);
2652 right = array_getter_node(parser, array, index, middle, afterend);
2653 return array_accessor_split(parser, array, index, middle, left, right);
2657 static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
2659 ast_function *func = NULL;
2660 ast_value *fval = NULL;
2661 ast_block *body = NULL;
2663 fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
2665 parseerror(parser, "failed to create accessor function value");
2669 func = ast_function_new(ast_ctx(array), funcname, fval);
2672 parseerror(parser, "failed to create accessor function node");
2676 body = ast_block_new(ast_ctx(array));
2678 parseerror(parser, "failed to create block for array accessor");
2684 vec_push(func->blocks, body);
2687 vec_push(parser->accessors, fval);
2692 static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
2694 ast_expression *root = NULL;
2695 ast_value *index = NULL;
2696 ast_value *value = NULL;
2700 if (!ast_istype(array->expression.next, ast_value)) {
2701 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2705 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2707 func = fval->constval.vfunc;
2708 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2710 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2711 value = ast_value_copy((ast_value*)array->expression.next);
2713 if (!index || !value) {
2714 parseerror(parser, "failed to create locals for array accessor");
2717 (void)!ast_value_set_name(value, "value"); /* not important */
2718 vec_push(fval->expression.params, index);
2719 vec_push(fval->expression.params, value);
2721 root = array_setter_node(parser, array, index, value, 0, array->expression.count);
2723 parseerror(parser, "failed to build accessor search tree");
2727 vec_push(func->blocks[0]->exprs, root);
2728 array->setter = fval;
2731 if (index) ast_delete(index);
2732 if (value) ast_delete(value);
2733 if (root) ast_delete(root);
2739 static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
2741 ast_expression *root = NULL;
2742 ast_value *entity = NULL;
2743 ast_value *index = NULL;
2744 ast_value *value = NULL;
2748 if (!ast_istype(array->expression.next, ast_value)) {
2749 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2753 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2755 func = fval->constval.vfunc;
2756 fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
2758 entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
2759 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2760 value = ast_value_copy((ast_value*)array->expression.next);
2761 if (!entity || !index || !value) {
2762 parseerror(parser, "failed to create locals for array accessor");
2765 (void)!ast_value_set_name(value, "value"); /* not important */
2766 vec_push(fval->expression.params, entity);
2767 vec_push(fval->expression.params, index);
2768 vec_push(fval->expression.params, value);
2770 root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
2772 parseerror(parser, "failed to build accessor search tree");
2776 vec_push(func->blocks[0]->exprs, root);
2777 array->setter = fval;
2780 if (entity) ast_delete(entity);
2781 if (index) ast_delete(index);
2782 if (value) ast_delete(value);
2783 if (root) ast_delete(root);
2789 static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
2791 ast_expression *root = NULL;
2792 ast_value *index = NULL;
2796 /* NOTE: checking array->expression.next rather than elemtype since
2797 * for fields elemtype is a temporary fieldtype.
2799 if (!ast_istype(array->expression.next, ast_value)) {
2800 parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
2804 if (!parser_create_array_accessor(parser, array, funcname, &fval))
2806 func = fval->constval.vfunc;
2807 fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
2809 index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
2812 parseerror(parser, "failed to create locals for array accessor");
2815 vec_push(fval->expression.params, index);
2817 root = array_getter_node(parser, array, index, 0, array->expression.count);
2819 parseerror(parser, "failed to build accessor search tree");
2823 vec_push(func->blocks[0]->exprs, root);
2824 array->getter = fval;
2827 if (index) ast_delete(index);
2828 if (root) ast_delete(root);
2834 static ast_value *parse_typename(parser_t *parser, ast_value **storebase);
2835 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
2843 bool variadic = false;
2845 ctx = parser_ctx(parser);
2847 /* for the sake of less code we parse-in in this function */
2848 if (!parser_next(parser)) {
2849 parseerror(parser, "expected parameter list");
2855 /* parse variables until we hit a closing paren */
2856 while (parser->tok != ')') {
2858 /* there must be commas between them */
2859 if (parser->tok != ',') {
2860 parseerror(parser, "expected comma or end of parameter list");
2863 if (!parser_next(parser)) {
2864 parseerror(parser, "expected parameter");
2870 if (parser->tok == TOKEN_DOTS) {
2871 /* '...' indicates a varargs function */
2873 if (!parser_next(parser)) {
2874 parseerror(parser, "expected parameter");
2877 if (parser->tok != ')') {
2878 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
2884 /* for anything else just parse a typename */
2885 param = parse_typename(parser, NULL);
2888 vec_push(params, param);
2889 if (param->expression.vtype >= TYPE_VARIANT) {
2890 char typename[1024];
2891 ast_type_to_string((ast_expression*)param, typename, sizeof(typename));
2892 parseerror(parser, "type not supported as part of a parameter list: %s", typename);
2899 if (vec_size(params) > 8 && opts_standard == COMPILER_QCC)
2900 (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
2903 if (!parser_next(parser)) {
2904 parseerror(parser, "parse error after typename");
2908 /* now turn 'var' into a function type */
2909 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
2910 fval->expression.next = (ast_expression*)var;
2911 fval->expression.variadic = variadic;
2914 var->expression.params = params;
2921 for (i = 0; i < vec_size(params); ++i)
2922 ast_delete(params[i]);
2927 static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
2929 ast_expression *cexp;
2930 ast_value *cval, *tmp;
2933 ctx = parser_ctx(parser);
2935 if (!parser_next(parser)) {
2937 parseerror(parser, "expected array-size");
2941 cexp = parse_expression_leave(parser, true);
2943 if (!cexp || !ast_istype(cexp, ast_value)) {
2947 parseerror(parser, "expected array-size as constant positive integer");
2950 cval = (ast_value*)cexp;
2952 tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
2953 tmp->expression.next = (ast_expression*)var;
2956 if (cval->expression.vtype == TYPE_INTEGER)
2957 tmp->expression.count = cval->constval.vint;
2958 else if (cval->expression.vtype == TYPE_FLOAT)
2959 tmp->expression.count = cval->constval.vfloat;
2963 parseerror(parser, "array-size must be a positive integer constant");
2968 if (parser->tok != ']') {
2970 parseerror(parser, "expected ']' after array-size");
2973 if (!parser_next(parser)) {
2975 parseerror(parser, "error after parsing array size");
2981 /* Parse a complete typename.
2982 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
2983 * but when parsing variables separated by comma
2984 * 'storebase' should point to where the base-type should be kept.
2985 * The base type makes up every bit of type information which comes *before* the
2988 * The following will be parsed in its entirety:
2990 * The 'basetype' in this case is 'void()'
2991 * and if there's a comma after it, say:
2993 * then the type-information 'void()' can be stored in 'storebase'
2995 static ast_value *parse_typename(parser_t *parser, ast_value **storebase)
2997 ast_value *var, *tmp;
3000 const char *name = NULL;
3001 bool isfield = false;
3002 bool wasarray = false;
3004 ctx = parser_ctx(parser);
3006 /* types may start with a dot */
3007 if (parser->tok == '.') {
3009 /* if we parsed a dot we need a typename now */
3010 if (!parser_next(parser)) {
3011 parseerror(parser, "expected typename for field definition");
3014 if (parser->tok != TOKEN_TYPENAME) {
3015 parseerror(parser, "expected typename");
3020 /* generate the basic type value */
3021 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
3022 /* do not yet turn into a field - remember:
3023 * .void() foo; is a field too
3024 * .void()() foo; is a function
3028 if (!parser_next(parser)) {
3030 parseerror(parser, "parse error after typename");
3034 /* an opening paren now starts the parameter-list of a function
3035 * this is where original-QC has parameter lists.
3036 * We allow a single parameter list here.
3037 * Much like fteqcc we don't allow `float()() x`
3039 if (parser->tok == '(') {
3040 var = parse_parameter_list(parser, var);
3045 /* store the base if requested */
3047 *storebase = ast_value_copy(var);
3049 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3050 tmp->expression.next = (ast_expression*)*storebase;
3055 /* there may be a name now */
3056 if (parser->tok == TOKEN_IDENT) {
3057 name = util_strdup(parser_tokval(parser));
3059 if (!parser_next(parser)) {
3061 parseerror(parser, "error after variable or field declaration");
3066 /* now this may be an array */
3067 if (parser->tok == '[') {
3069 var = parse_arraysize(parser, var);
3074 /* This is the point where we can turn it into a field */
3076 /* turn it into a field if desired */
3077 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
3078 tmp->expression.next = (ast_expression*)var;
3082 /* now there may be function parens again */
3083 if (parser->tok == '(' && opts_standard == COMPILER_QCC)
3084 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3085 if (parser->tok == '(' && wasarray)
3086 parseerror(parser, "arrays as part of a return type is not supported");
3087 while (parser->tok == '(') {
3088 var = parse_parameter_list(parser, var);
3097 /* finally name it */
3099 if (!ast_value_set_name(var, name)) {
3101 parseerror(parser, "internal error: failed to set name");
3104 /* free the name, ast_value_set_name duplicates */
3111 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields)
3115 ast_expression *old;
3119 ast_value *basetype = NULL;
3121 bool isparam = false;
3122 bool isvector = false;
3123 bool cleanvar = true;
3124 bool wasarray = false;
3126 varentry_t varent, ve[3];
3128 /* get the first complete variable */
3129 var = parse_typename(parser, &basetype);
3132 ast_delete(basetype);
3136 memset(&varent, 0, sizeof(varent));
3137 memset(&ve, 0, sizeof(ve));
3143 /* Part 0: finish the type */
3144 if (parser->tok == '(') {
3145 if (opts_standard == COMPILER_QCC)
3146 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3147 var = parse_parameter_list(parser, var);
3153 /* we only allow 1-dimensional arrays */
3154 if (parser->tok == '[') {
3156 var = parse_arraysize(parser, var);
3162 if (parser->tok == '(' && wasarray) {
3163 parseerror(parser, "arrays as part of a return type is not supported");
3164 /* we'll still parse the type completely for now */
3166 /* for functions returning functions */
3167 while (parser->tok == '(') {
3168 if (opts_standard == COMPILER_QCC)
3169 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
3170 var = parse_parameter_list(parser, var);
3178 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
3179 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
3180 * is then filled with the previous definition and the parameter-names replaced.
3183 /* Deal with end_sys_ vars */
3185 if (!strcmp(var->name, "end_sys_globals")) {
3186 parser->crc_globals = vec_size(parser->globals);
3189 else if (!strcmp(var->name, "end_sys_fields")) {
3190 parser->crc_fields = vec_size(parser->fields);
3193 if (was_end && var->expression.vtype == TYPE_FIELD) {
3194 if (parsewarning(parser, WARN_END_SYS_FIELDS,
3195 "global '%s' hint should not be a field",
3196 parser_tokval(parser)))
3203 if (!nofields && var->expression.vtype == TYPE_FIELD)
3205 /* deal with field declarations */
3206 old = parser_find_field(parser, var->name);
3208 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
3209 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
3218 parseerror(parser, "field `%s` already declared here: %s:%i",
3219 var->name, ast_ctx(old).file, ast_ctx(old).line);
3224 if (opts_standard == COMPILER_QCC &&
3225 (old = parser_find_global(parser, var->name)))
3227 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3228 parseerror(parser, "field `%s` already declared here: %s:%i",
3229 var->name, ast_ctx(old).file, ast_ctx(old).line);
3236 /* deal with other globals */
3237 old = parser_find_global(parser, var->name);
3238 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
3240 /* This is a function which had a prototype */
3241 if (!ast_istype(old, ast_value)) {
3242 parseerror(parser, "internal error: prototype is not an ast_value");
3246 proto = (ast_value*)old;
3247 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
3248 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
3250 ast_ctx(proto).file, ast_ctx(proto).line);
3254 /* we need the new parameter-names */
3255 for (i = 0; i < vec_size(proto->expression.params); ++i)
3256 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
3264 parseerror(parser, "global `%s` already declared here: %s:%i",
3265 var->name, ast_ctx(old).file, ast_ctx(old).line);
3269 if (opts_standard == COMPILER_QCC &&
3270 (old = parser_find_field(parser, var->name)))
3272 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
3273 parseerror(parser, "global `%s` already declared here: %s:%i",
3274 var->name, ast_ctx(old).file, ast_ctx(old).line);
3281 else /* it's not a global */
3283 old = parser_find_local(parser, var->name, parser->blocklocal, &isparam);
3284 if (old && !isparam) {
3285 parseerror(parser, "local `%s` already declared here: %s:%i",
3286 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3290 old = parser_find_local(parser, var->name, 0, &isparam);
3291 if (old && isparam) {
3292 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
3293 "local `%s` is shadowing a parameter", var->name))
3295 parseerror(parser, "local `%s` already declared here: %s:%i",
3296 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
3300 if (opts_standard != COMPILER_GMQCC) {
3309 * Create the global/local, and deal with vector types.
3312 if (var->expression.vtype == TYPE_VECTOR)
3314 else if (var->expression.vtype == TYPE_FIELD &&
3315 var->expression.next->expression.vtype == TYPE_VECTOR)
3319 if (!create_vector_members(var, ve)) {
3325 varent.name = util_strdup(var->name);
3326 varent.var = (ast_expression*)var;
3329 /* deal with global variables, fields, functions */
3330 if (!nofields && var->expression.vtype == TYPE_FIELD) {
3331 vec_push(parser->fields, varent);
3333 for (i = 0; i < 3; ++i)
3334 vec_push(parser->fields, ve[i]);
3338 vec_push(parser->globals, varent);
3340 for (i = 0; i < 3; ++i)
3341 vec_push(parser->globals, ve[i]);
3345 vec_push(parser->locals, varent);
3346 vec_push(localblock->locals, var);
3348 for (i = 0; i < 3; ++i) {
3349 vec_push(parser->locals, ve[i]);
3350 ast_block_collect(localblock, ve[i].var);
3351 ve[i].var = NULL; /* from here it's being collected in the block */
3357 ve[0].name = ve[1].name = ve[2].name = NULL;
3358 ve[0].var = ve[1].var = ve[2].var = NULL;
3364 if (var->expression.vtype == TYPE_ARRAY) {
3366 snprintf(name, sizeof(name), "%s##SET", var->name);
3367 if (!parser_create_array_setter(parser, var, name))
3369 snprintf(name, sizeof(name), "%s##GET", var->name);
3370 if (!parser_create_array_getter(parser, var, var->expression.next, name))
3373 else if (!localblock && !nofields &&
3374 var->expression.vtype == TYPE_FIELD &&
3375 var->expression.next->expression.vtype == TYPE_ARRAY)
3378 ast_expression *telem;
3380 ast_value *array = (ast_value*)var->expression.next;
3382 if (!ast_istype(var->expression.next, ast_value)) {
3383 parseerror(parser, "internal error: field element type must be an ast_value");
3387 snprintf(name, sizeof(name), "%s##SETF", var->name);
3388 if (!parser_create_array_field_setter(parser, array, name))
3391 telem = ast_type_copy(ast_ctx(var), array->expression.next);
3392 tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
3393 tfield->expression.next = telem;
3394 snprintf(name, sizeof(name), "%s##GETFP", var->name);
3395 if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
3403 if (parser->tok == ';') {
3404 ast_delete(basetype);
3405 if (!parser_next(parser)) {
3406 parseerror(parser, "error after variable declaration");
3412 if (parser->tok == ',')
3415 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
3416 parseerror(parser, "missing comma or semicolon while parsing variables");
3420 if (localblock && opts_standard == COMPILER_QCC) {
3421 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
3422 "initializing expression turns variable `%s` into a constant in this standard",
3429 if (parser->tok != '{') {
3430 if (parser->tok != '=') {
3431 parseerror(parser, "missing semicolon or initializer");
3435 if (!parser_next(parser)) {
3436 parseerror(parser, "error parsing initializer");
3440 else if (opts_standard == COMPILER_QCC) {
3441 parseerror(parser, "expected '=' before function body in this standard");
3444 if (parser->tok == '#') {
3448 parseerror(parser, "cannot declare builtins within functions");
3451 if (var->expression.vtype != TYPE_FUNCTION) {
3452 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
3455 if (!parser_next(parser)) {
3456 parseerror(parser, "expected builtin number");
3459 if (parser->tok != TOKEN_INTCONST) {
3460 parseerror(parser, "builtin number must be an integer constant");
3463 if (parser_token(parser)->constval.i <= 0) {
3464 parseerror(parser, "builtin number must be an integer greater than zero");
3468 func = ast_function_new(ast_ctx(var), var->name, var);
3470 parseerror(parser, "failed to allocate function for `%s`", var->name);
3473 vec_push(parser->functions, func);
3475 func->builtin = -parser_token(parser)->constval.i;
3477 if (!parser_next(parser)) {
3478 parseerror(parser, "expected comma or semicolon");
3479 ast_function_delete(func);
3480 var->constval.vfunc = NULL;
3484 else if (parser->tok == '{' || parser->tok == '[')
3487 parseerror(parser, "cannot declare functions within functions");
3491 if (!parse_function_body(parser, var))
3493 ast_delete(basetype);
3496 ast_expression *cexp;
3499 cexp = parse_expression_leave(parser, true);
3504 cval = (ast_value*)cexp;
3505 if (!ast_istype(cval, ast_value) || !cval->isconst)
3506 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
3509 var->isconst = true;
3510 if (cval->expression.vtype == TYPE_STRING)
3511 var->constval.vstring = parser_strdup(cval->constval.vstring);
3513 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
3517 shunt sy = { NULL, NULL };
3518 vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
3519 vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
3520 vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
3521 if (!parser_sy_pop(parser, &sy))
3524 if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
3525 parseerror(parser, "internal error: leaked operands");
3526 vec_push(localblock->exprs, (ast_expression*)sy.out[0].out);
3534 if (parser->tok == ',') {
3535 if (!parser_next(parser)) {
3536 parseerror(parser, "expected another variable");
3540 if (parser->tok != TOKEN_IDENT) {
3541 parseerror(parser, "expected another variable");
3544 var = ast_value_copy(basetype);
3546 ast_value_set_name(var, parser_tokval(parser));
3547 if (!parser_next(parser)) {
3548 parseerror(parser, "error parsing variable declaration");
3554 if (parser->tok != ';') {
3555 parseerror(parser, "missing semicolon after variables");
3559 if (!parser_next(parser)) {
3560 parseerror(parser, "parse error after variable declaration");
3564 ast_delete(basetype);
3568 if (cleanvar && var)
3570 ast_delete(basetype);
3574 ast_delete(basetype);
3575 if (cleanvar && var)
3577 if (varent.name) mem_d(varent.name);
3578 if (ve[0].name) mem_d(ve[0].name);
3579 if (ve[1].name) mem_d(ve[1].name);
3580 if (ve[2].name) mem_d(ve[2].name);
3581 if (ve[0].var) mem_d(ve[0].var);
3582 if (ve[1].var) mem_d(ve[1].var);
3583 if (ve[2].var) mem_d(ve[2].var);
3587 static bool parser_global_statement(parser_t *parser)
3589 if (parser->tok == TOKEN_TYPENAME || parser->tok == '.')
3591 return parse_variable(parser, NULL, false);
3593 else if (parser->tok == TOKEN_KEYWORD)
3595 /* handle 'var' and 'const' */
3596 if (!strcmp(parser_tokval(parser), "var")) {
3597 if (!parser_next(parser)) {
3598 parseerror(parser, "expected variable declaration after 'var'");
3601 return parse_variable(parser, NULL, true);
3605 else if (parser->tok == '$')
3607 if (!parser_next(parser)) {
3608 parseerror(parser, "parse error");
3614 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
3620 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
3622 return util_crc16(old, str, strlen(str));
3625 static void progdefs_crc_file(const char *str)
3627 /* write to progdefs.h here */
3631 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
3633 old = progdefs_crc_sum(old, str);
3634 progdefs_crc_file(str);
3638 static void generate_checksum(parser_t *parser)
3640 uint16_t crc = 0xFFFF;
3643 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
3644 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
3646 progdefs_crc_file("\tint\tpad;\n");
3647 progdefs_crc_file("\tint\tofs_return[3];\n");
3648 progdefs_crc_file("\tint\tofs_parm0[3];\n");
3649 progdefs_crc_file("\tint\tofs_parm1[3];\n");
3650 progdefs_crc_file("\tint\tofs_parm2[3];\n");
3651 progdefs_crc_file("\tint\tofs_parm3[3];\n");
3652 progdefs_crc_file("\tint\tofs_parm4[3];\n");
3653 progdefs_crc_file("\tint\tofs_parm5[3];\n");
3654 progdefs_crc_file("\tint\tofs_parm6[3];\n");
3655 progdefs_crc_file("\tint\tofs_parm7[3];\n");
3657 for (i = 0; i < parser->crc_globals; ++i) {
3658 if (!ast_istype(parser->globals[i].var, ast_value))
3660 switch (parser->globals[i].var->expression.vtype) {
3661 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
3662 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
3663 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
3664 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
3666 crc = progdefs_crc_both(crc, "\tint\t");
3669 crc = progdefs_crc_both(crc, parser->globals[i].name);
3670 crc = progdefs_crc_both(crc, ";\n");
3672 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
3673 for (i = 0; i < parser->crc_fields; ++i) {
3674 if (!ast_istype(parser->fields[i].var, ast_value))
3676 switch (parser->fields[i].var->expression.next->expression.vtype) {
3677 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
3678 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
3679 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
3680 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
3682 crc = progdefs_crc_both(crc, "\tint\t");
3685 crc = progdefs_crc_both(crc, parser->fields[i].name);
3686 crc = progdefs_crc_both(crc, ";\n");
3688 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
3693 static parser_t *parser;
3698 parser = (parser_t*)mem_a(sizeof(parser_t));
3702 memset(parser, 0, sizeof(*parser));
3704 for (i = 0; i < operator_count; ++i) {
3705 if (operators[i].id == opid1('=')) {
3706 parser->assign_op = operators+i;
3710 if (!parser->assign_op) {
3711 printf("internal error: initializing parser: failed to find assign operator\n");
3718 bool parser_compile()
3720 /* initial lexer/parser state */
3721 parser->lex->flags.noops = true;
3723 if (parser_next(parser))
3725 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
3727 if (!parser_global_statement(parser)) {
3728 if (parser->tok == TOKEN_EOF)
3729 parseerror(parser, "unexpected eof");
3730 else if (!parser->errors)
3731 parseerror(parser, "there have been errors, bailing out");
3732 lex_close(parser->lex);
3738 parseerror(parser, "parse error");
3739 lex_close(parser->lex);
3744 lex_close(parser->lex);
3747 return !parser->errors;
3750 bool parser_compile_file(const char *filename)
3752 parser->lex = lex_open(filename);
3754 con_err("failed to open file \"%s\"\n", filename);
3757 return parser_compile();
3760 bool parser_compile_string_len(const char *name, const char *str, size_t len)
3762 parser->lex = lex_open_string(str, len, name);
3764 con_err("failed to create lexer for string \"%s\"\n", name);
3767 return parser_compile();
3770 bool parser_compile_string(const char *name, const char *str)
3772 parser->lex = lex_open_string(str, strlen(str), name);
3774 con_err("failed to create lexer for string \"%s\"\n", name);
3777 return parser_compile();
3780 void parser_cleanup()
3783 for (i = 0; i < vec_size(parser->accessors); ++i) {
3784 ast_delete(parser->accessors[i]->constval.vfunc);
3785 parser->accessors[i]->constval.vfunc = NULL;
3786 ast_delete(parser->accessors[i]);
3788 for (i = 0; i < vec_size(parser->functions); ++i) {
3789 ast_delete(parser->functions[i]);
3791 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
3792 ast_delete(parser->imm_vector[i]);
3794 for (i = 0; i < vec_size(parser->imm_string); ++i) {
3795 ast_delete(parser->imm_string[i]);
3797 for (i = 0; i < vec_size(parser->imm_float); ++i) {
3798 ast_delete(parser->imm_float[i]);
3800 for (i = 0; i < vec_size(parser->fields); ++i) {
3801 ast_delete(parser->fields[i].var);
3802 mem_d(parser->fields[i].name);
3804 for (i = 0; i < vec_size(parser->globals); ++i) {
3805 ast_delete(parser->globals[i].var);
3806 mem_d(parser->globals[i].name);
3808 vec_free(parser->accessors);
3809 vec_free(parser->functions);
3810 vec_free(parser->imm_vector);
3811 vec_free(parser->imm_string);
3812 vec_free(parser->imm_float);
3813 vec_free(parser->globals);
3814 vec_free(parser->fields);
3815 vec_free(parser->locals);
3820 bool parser_finish(const char *output)
3826 if (!parser->errors)
3828 ir = ir_builder_new("gmqcc_out");
3830 con_out("failed to allocate builder\n");
3834 for (i = 0; i < vec_size(parser->fields); ++i) {
3837 if (!ast_istype(parser->fields[i].var, ast_value))
3839 field = (ast_value*)parser->fields[i].var;
3840 isconst = field->isconst;
3841 field->isconst = false;
3842 if (!ast_global_codegen((ast_value*)field, ir, true)) {
3843 con_out("failed to generate field %s\n", field->name);
3844 ir_builder_delete(ir);
3849 ast_expression *subtype;
3850 field->isconst = true;
3851 subtype = field->expression.next;
3852 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
3853 if (subtype->expression.vtype == TYPE_FIELD)
3854 ifld->fieldtype = subtype->expression.next->expression.vtype;
3855 else if (subtype->expression.vtype == TYPE_FUNCTION)
3856 ifld->outtype = subtype->expression.next->expression.vtype;
3857 (void)!ir_value_set_field(field->ir_v, ifld);
3860 for (i = 0; i < vec_size(parser->globals); ++i) {
3862 if (!ast_istype(parser->globals[i].var, ast_value))
3864 asvalue = (ast_value*)(parser->globals[i].var);
3865 if (!asvalue->uses && !asvalue->isconst && asvalue->expression.vtype != TYPE_FUNCTION) {
3866 if (strcmp(asvalue->name, "end_sys_globals") &&
3867 strcmp(asvalue->name, "end_sys_fields"))
3869 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
3870 "unused global: `%s`", asvalue->name);
3873 if (!ast_global_codegen(asvalue, ir, false)) {
3874 con_out("failed to generate global %s\n", parser->globals[i].name);
3875 ir_builder_delete(ir);
3879 for (i = 0; i < vec_size(parser->imm_float); ++i) {
3880 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
3881 con_out("failed to generate global %s\n", parser->imm_float[i]->name);
3882 ir_builder_delete(ir);
3886 for (i = 0; i < vec_size(parser->imm_string); ++i) {
3887 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
3888 con_out("failed to generate global %s\n", parser->imm_string[i]->name);
3889 ir_builder_delete(ir);
3893 for (i = 0; i < vec_size(parser->imm_vector); ++i) {
3894 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
3895 con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
3896 ir_builder_delete(ir);
3900 for (i = 0; i < vec_size(parser->globals); ++i) {
3902 if (!ast_istype(parser->globals[i].var, ast_value))
3904 asvalue = (ast_value*)(parser->globals[i].var);
3905 if (asvalue->setter) {
3906 if (!ast_global_codegen(asvalue->setter, ir, false) ||
3907 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
3908 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
3910 printf("failed to generate setter for %s\n", parser->globals[i].name);
3911 ir_builder_delete(ir);
3915 if (asvalue->getter) {
3916 if (!ast_global_codegen(asvalue->getter, ir, false) ||
3917 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
3918 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
3920 printf("failed to generate getter for %s\n", parser->globals[i].name);
3921 ir_builder_delete(ir);
3926 for (i = 0; i < vec_size(parser->fields); ++i) {
3928 asvalue = (ast_value*)(parser->fields[i].var->expression.next);
3930 if (!ast_istype((ast_expression*)asvalue, ast_value))
3932 if (asvalue->expression.vtype != TYPE_ARRAY)
3934 if (asvalue->setter) {
3935 if (!ast_global_codegen(asvalue->setter, ir, false) ||
3936 !ast_function_codegen(asvalue->setter->constval.vfunc, ir) ||
3937 !ir_function_finalize(asvalue->setter->constval.vfunc->ir_func))
3939 printf("failed to generate setter for %s\n", parser->fields[i].name);
3940 ir_builder_delete(ir);
3944 if (asvalue->getter) {
3945 if (!ast_global_codegen(asvalue->getter, ir, false) ||
3946 !ast_function_codegen(asvalue->getter->constval.vfunc, ir) ||
3947 !ir_function_finalize(asvalue->getter->constval.vfunc->ir_func))
3949 printf("failed to generate getter for %s\n", parser->fields[i].name);
3950 ir_builder_delete(ir);
3955 for (i = 0; i < vec_size(parser->functions); ++i) {
3956 if (!ast_function_codegen(parser->functions[i], ir)) {
3957 con_out("failed to generate function %s\n", parser->functions[i]->name);
3958 ir_builder_delete(ir);
3963 ir_builder_dump(ir, con_out);
3964 for (i = 0; i < vec_size(parser->functions); ++i) {
3965 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
3966 con_out("failed to finalize function %s\n", parser->functions[i]->name);
3967 ir_builder_delete(ir);
3974 ir_builder_dump(ir, con_out);
3976 generate_checksum(parser);
3978 if (!ir_builder_generate(ir, output)) {
3979 con_out("*** failed to generate output file\n");
3980 ir_builder_delete(ir);
3985 ir_builder_delete(ir);
3989 con_out("*** there were compile errors\n");