16 MEM_VECTOR_MAKE(varentry_t, globals);
17 MEM_VECTOR_MAKE(varentry_t, fields);
18 MEM_VECTOR_MAKE(ast_function*, functions);
19 MEM_VECTOR_MAKE(ast_value*, imm_float);
20 MEM_VECTOR_MAKE(ast_value*, imm_string);
21 MEM_VECTOR_MAKE(ast_value*, imm_vector);
23 ast_value *imm_float_zero;
24 ast_value *imm_vector_zero;
29 ast_function *function;
30 MEM_VECTOR_MAKE(varentry_t, locals);
35 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
36 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
37 * anything else: type error
42 MEM_VEC_FUNCTIONS(parser_t, varentry_t, globals)
43 MEM_VEC_FUNCTIONS(parser_t, varentry_t, fields)
44 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_float)
45 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_string)
46 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_vector)
47 MEM_VEC_FUNCTIONS(parser_t, varentry_t, locals)
48 MEM_VEC_FUNCTIONS(parser_t, ast_function*, functions)
50 static bool GMQCC_WARN parser_pop_local(parser_t *parser);
51 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields);
52 static ast_block* parse_block(parser_t *parser, bool warnreturn);
53 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn);
54 static ast_expression* parse_statement_or_block(parser_t *parser);
55 static 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 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 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 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 < parser->imm_float_count; ++i) {
170 if (parser->imm_float[i]->constval.vfloat == d)
171 return parser->imm_float[i];
173 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
175 out->constval.vfloat = d;
176 if (!parser_t_imm_float_add(parser, out)) {
177 ast_value_delete(out);
183 static ast_value* parser_const_float_0(parser_t *parser)
185 if (!parser->imm_float_zero)
186 parser->imm_float_zero = parser_const_float(parser, 0);
187 return parser->imm_float_zero;
190 static char *parser_strdup(const char *str)
193 /* actually dup empty strings */
194 char *out = mem_a(1);
198 return util_strdup(str);
201 static ast_value* parser_const_string(parser_t *parser, const char *str)
205 for (i = 0; i < parser->imm_string_count; ++i) {
206 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
207 return parser->imm_string[i];
209 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
211 out->constval.vstring = parser_strdup(str);
212 if (!parser_t_imm_string_add(parser, out)) {
213 ast_value_delete(out);
219 static ast_value* parser_const_vector(parser_t *parser, vector v)
223 for (i = 0; i < parser->imm_vector_count; ++i) {
224 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
225 return parser->imm_vector[i];
227 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
229 out->constval.vvec = v;
230 if (!parser_t_imm_vector_add(parser, out)) {
231 ast_value_delete(out);
237 static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
243 return parser_const_vector(parser, v);
246 static ast_value* parser_const_vector_0(parser_t *parser)
248 if (!parser->imm_vector_zero)
249 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
250 return parser->imm_vector_zero;
253 static ast_expression* parser_find_field(parser_t *parser, const char *name)
256 for (i = 0; i < parser->fields_count; ++i) {
257 if (!strcmp(parser->fields[i].name, name))
258 return parser->fields[i].var;
263 static ast_expression* parser_find_global(parser_t *parser, const char *name)
266 for (i = 0; i < parser->globals_count; ++i) {
267 if (!strcmp(parser->globals[i].name, name))
268 return parser->globals[i].var;
273 static ast_expression* parser_find_param(parser_t *parser, const char *name)
277 if (!parser->function)
279 fun = parser->function->vtype;
280 for (i = 0; i < fun->expression.params_count; ++i) {
281 if (!strcmp(fun->expression.params[i]->name, name))
282 return (ast_expression*)(fun->expression.params[i]);
287 static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
291 for (i = parser->locals_count; i > upto;) {
293 if (!strcmp(parser->locals[i].name, name))
294 return parser->locals[i].var;
297 return parser_find_param(parser, name);
300 static ast_expression* parser_find_var(parser_t *parser, const char *name)
304 v = parser_find_local(parser, name, 0, &dummy);
305 if (!v) v = parser_find_global(parser, name);
311 size_t etype; /* 0 = expression, others are operators */
315 ast_block *block; /* for commas and function calls */
320 MEM_VECTOR_MAKE(sy_elem, out);
321 MEM_VECTOR_MAKE(sy_elem, ops);
323 MEM_VEC_FUNCTIONS(shunt, sy_elem, out)
324 MEM_VEC_FUNCTIONS(shunt, sy_elem, ops)
326 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
337 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
341 e.out = (ast_expression*)v;
348 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
350 e.etype = 1 + (op - operators);
359 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
371 # define DEBUGSHUNTDO(x) x
373 # define DEBUGSHUNTDO(x)
376 static bool parser_sy_pop(parser_t *parser, shunt *sy)
380 ast_expression *out = NULL;
381 ast_expression *exprs[3];
382 ast_block *blocks[3];
383 ast_value *asvalue[3];
385 qcint generated_op = 0;
387 if (!sy->ops_count) {
388 parseerror(parser, "internal error: missing operator");
392 if (sy->ops[sy->ops_count-1].paren) {
393 parseerror(parser, "unmatched parenthesis");
397 op = &operators[sy->ops[sy->ops_count-1].etype - 1];
398 ctx = sy->ops[sy->ops_count-1].ctx;
400 DEBUGSHUNTDO(printf("apply %s\n", op->op));
402 if (sy->out_count < op->operands) {
403 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", sy->out_count,
404 op->op, (int)op->id);
410 sy->out_count -= op->operands;
411 for (i = 0; i < op->operands; ++i) {
412 exprs[i] = sy->out[sy->out_count+i].out;
413 blocks[i] = sy->out[sy->out_count+i].block;
414 asvalue[i] = (ast_value*)exprs[i];
417 if (blocks[0] && !blocks[0]->exprs_count && op->id != opid1(',')) {
418 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
422 #define NotSameType(T) \
423 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
424 exprs[0]->expression.vtype != T)
425 #define CanConstFold1(A) \
426 (ast_istype((A), ast_value) && ((ast_value*)(A))->isconst)
427 #define CanConstFold(A, B) \
428 (CanConstFold1(A) && CanConstFold1(B))
429 #define ConstV(i) (asvalue[(i)]->constval.vvec)
430 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
431 #define ConstS(i) (asvalue[(i)]->constval.vstring)
435 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
439 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
440 if (exprs[1]->expression.vtype != TYPE_FIELD) {
441 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
444 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
446 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
447 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
451 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
458 if (!ast_block_exprs_add(blocks[0], exprs[1]))
461 blocks[0] = ast_block_new(ctx);
462 if (!ast_block_exprs_add(blocks[0], exprs[0]) ||
463 !ast_block_exprs_add(blocks[0], exprs[1]))
468 if (!ast_block_set_type(blocks[0], exprs[1]))
471 sy->out[sy->out_count++] = syblock(ctx, blocks[0]);
475 switch (exprs[0]->expression.vtype) {
477 if (CanConstFold1(exprs[0]))
478 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
480 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
481 (ast_expression*)parser_const_float_0(parser),
485 if (CanConstFold1(exprs[0]))
486 out = (ast_expression*)parser_const_vector_f(parser,
487 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
489 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
490 (ast_expression*)parser_const_vector_0(parser),
494 parseerror(parser, "invalid types used in expression: cannot negate type %s",
495 type_name[exprs[0]->expression.vtype]);
501 switch (exprs[0]->expression.vtype) {
503 if (CanConstFold1(exprs[0]))
504 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
506 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
509 if (CanConstFold1(exprs[0]))
510 out = (ast_expression*)parser_const_float(parser,
511 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
513 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
516 if (CanConstFold1(exprs[0]))
517 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
519 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
521 /* we don't constant-fold NOT for these types */
523 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
526 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
529 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
530 type_name[exprs[0]->expression.vtype]);
536 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
537 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
539 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
540 type_name[exprs[0]->expression.vtype],
541 type_name[exprs[1]->expression.vtype]);
544 switch (exprs[0]->expression.vtype) {
546 if (CanConstFold(exprs[0], exprs[1]))
548 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
551 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
554 if (CanConstFold(exprs[0], exprs[1]))
555 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
557 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
560 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
561 type_name[exprs[0]->expression.vtype],
562 type_name[exprs[1]->expression.vtype]);
567 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
568 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
570 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
571 type_name[exprs[1]->expression.vtype],
572 type_name[exprs[0]->expression.vtype]);
575 switch (exprs[0]->expression.vtype) {
577 if (CanConstFold(exprs[0], exprs[1]))
578 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
580 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
583 if (CanConstFold(exprs[0], exprs[1]))
584 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
586 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
589 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
590 type_name[exprs[1]->expression.vtype],
591 type_name[exprs[0]->expression.vtype]);
596 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
597 exprs[0]->expression.vtype != TYPE_VECTOR &&
598 exprs[0]->expression.vtype != TYPE_FLOAT &&
599 exprs[1]->expression.vtype != TYPE_VECTOR &&
600 exprs[1]->expression.vtype != TYPE_FLOAT)
602 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
603 type_name[exprs[1]->expression.vtype],
604 type_name[exprs[0]->expression.vtype]);
607 switch (exprs[0]->expression.vtype) {
609 if (exprs[1]->expression.vtype == TYPE_VECTOR)
611 if (CanConstFold(exprs[0], exprs[1]))
612 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
614 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
618 if (CanConstFold(exprs[0], exprs[1]))
619 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
621 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
625 if (exprs[1]->expression.vtype == TYPE_FLOAT)
627 if (CanConstFold(exprs[0], exprs[1]))
628 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
630 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
634 if (CanConstFold(exprs[0], exprs[1]))
635 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
637 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
641 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
642 type_name[exprs[1]->expression.vtype],
643 type_name[exprs[0]->expression.vtype]);
648 if (NotSameType(TYPE_FLOAT)) {
649 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
650 type_name[exprs[0]->expression.vtype],
651 type_name[exprs[1]->expression.vtype]);
654 if (CanConstFold(exprs[0], exprs[1]))
655 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
657 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
661 parseerror(parser, "qc does not have a modulo operator");
665 if (NotSameType(TYPE_FLOAT)) {
666 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
667 type_name[exprs[0]->expression.vtype],
668 type_name[exprs[1]->expression.vtype]);
671 if (CanConstFold(exprs[0], exprs[1]))
672 out = (ast_expression*)parser_const_float(parser,
673 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
674 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
676 out = (ast_expression*)ast_binary_new(ctx,
677 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
681 parseerror(parser, "TODO: bitxor");
686 case opid3('<','<','='):
687 case opid3('>','>','='):
688 parseerror(parser, "TODO: shifts");
692 generated_op += 1; /* INSTR_OR */
694 generated_op += INSTR_AND;
695 if (NotSameType(TYPE_FLOAT)) {
696 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
697 type_name[exprs[0]->expression.vtype],
698 type_name[exprs[1]->expression.vtype]);
699 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
700 parseerror(parser, "TODO: optional early out");
703 if (opts_standard == COMPILER_GMQCC)
704 printf("TODO: early out logic\n");
705 if (CanConstFold(exprs[0], exprs[1]))
706 out = (ast_expression*)parser_const_float(parser,
707 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
709 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
713 generated_op += 1; /* INSTR_GT */
715 generated_op += 1; /* INSTR_LT */
716 case opid2('>', '='):
717 generated_op += 1; /* INSTR_GE */
718 case opid2('<', '='):
719 generated_op += INSTR_LE;
720 if (NotSameType(TYPE_FLOAT)) {
721 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
722 type_name[exprs[0]->expression.vtype],
723 type_name[exprs[1]->expression.vtype]);
726 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
728 case opid2('!', '='):
729 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
730 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
731 type_name[exprs[0]->expression.vtype],
732 type_name[exprs[1]->expression.vtype]);
735 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
737 case opid2('=', '='):
738 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
739 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
740 type_name[exprs[0]->expression.vtype],
741 type_name[exprs[1]->expression.vtype]);
744 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
748 if (ast_istype(exprs[0], ast_entfield)) {
749 ast_expression *field = ((ast_entfield*)exprs[0])->field;
750 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
751 exprs[0]->expression.vtype == TYPE_FIELD &&
752 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
754 assignop = type_storep_instr[TYPE_VECTOR];
757 assignop = type_storep_instr[exprs[0]->expression.vtype];
758 if (!ast_compare_type(field->expression.next, exprs[1])) {
761 ast_type_to_string(field->expression.next, ty1, sizeof(ty1));
762 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
763 if (opts_standard == COMPILER_QCC &&
764 field->expression.next->expression.vtype == TYPE_FUNCTION &&
765 exprs[1]->expression.vtype == TYPE_FUNCTION)
767 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
768 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
774 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
779 if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
780 exprs[0]->expression.vtype == TYPE_FIELD &&
781 exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
783 assignop = type_store_instr[TYPE_VECTOR];
786 assignop = type_store_instr[exprs[0]->expression.vtype];
787 if (!ast_compare_type(exprs[0], exprs[1])) {
790 ast_type_to_string(exprs[0], ty1, sizeof(ty1));
791 ast_type_to_string(exprs[1], ty2, sizeof(ty2));
792 if (opts_standard == COMPILER_QCC &&
793 exprs[0]->expression.vtype == TYPE_FUNCTION &&
794 exprs[1]->expression.vtype == TYPE_FUNCTION)
796 if (parsewarning(parser, WARN_ASSIGN_FUNCTION_TYPES,
797 "invalid types in assignment: cannot assign %s to %s", ty2, ty1))
803 parseerror(parser, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
806 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
810 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
811 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
813 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
814 type_name[exprs[0]->expression.vtype],
815 type_name[exprs[1]->expression.vtype]);
818 if (ast_istype(exprs[0], ast_entfield))
819 assignop = type_storep_instr[exprs[0]->expression.vtype];
821 assignop = type_store_instr[exprs[0]->expression.vtype];
822 switch (exprs[0]->expression.vtype) {
824 out = (ast_expression*)ast_binstore_new(ctx, assignop,
825 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
829 out = (ast_expression*)ast_binstore_new(ctx, assignop,
830 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
834 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
835 type_name[exprs[0]->expression.vtype],
836 type_name[exprs[1]->expression.vtype]);
844 parseerror(parser, "failed to apply operand %s", op->op);
848 DEBUGSHUNTDO(printf("applied %s\n", op->op));
849 sy->out[sy->out_count++] = syexp(ctx, out);
853 static bool parser_close_call(parser_t *parser, shunt *sy)
855 /* was a function call */
863 fid = sy->ops[sy->ops_count].off;
865 /* out[fid] is the function
866 * everything above is parameters...
868 * 1 params = ast_expression
872 if (sy->out_count < 1 || sy->out_count <= fid) {
873 parseerror(parser, "internal error: function call needs function and parameter list...");
877 fun = sy->out[fid].out;
879 call = ast_call_new(sy->ops[sy->ops_count].ctx, fun);
881 parseerror(parser, "out of memory");
885 if (fid+1 == sy->out_count) {
888 } else if (fid+2 == sy->out_count) {
891 params = sy->out[sy->out_count].block;
895 if (!ast_call_params_add(call, sy->out[sy->out_count].out)) {
896 ast_delete(sy->out[sy->out_count].out);
897 parseerror(parser, "out of memory");
901 paramcount = params->exprs_count;
902 MEM_VECTOR_MOVE(params, exprs, call, params);
905 if (!ast_call_check_types(call))
908 parseerror(parser, "invalid function call");
912 /* overwrite fid, the function, with a call */
913 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
915 if (fun->expression.vtype != TYPE_FUNCTION) {
916 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
920 if (!fun->expression.next) {
921 parseerror(parser, "could not determine function return type");
924 if (fun->expression.params_count != paramcount &&
925 !(fun->expression.variadic &&
926 fun->expression.params_count < paramcount))
929 const char *fewmany = (fun->expression.params_count > paramcount) ? "few" : "many";
931 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
932 if (opts_standard == COMPILER_GMQCC)
935 parseerror(parser, "too %s parameters for call to %s: expected %i, got %i\n"
936 " -> `%s` has been declared here: %s:%i",
937 fewmany, fval->name, (int)fun->expression.params_count, (int)paramcount,
938 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
940 parseerror(parser, "too %s parameters for function call: expected %i, got %i\n"
941 " -> `%s` has been declared here: %s:%i",
942 fewmany, fval->name, (int)fun->expression.params_count, (int)paramcount,
943 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
949 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
950 "too %s parameters for call to %s: expected %i, got %i\n"
951 " -> `%s` has been declared here: %s:%i",
952 fewmany, fval->name, (int)fun->expression.params_count, (int)paramcount,
953 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
955 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
956 "too %s parameters for function call: expected %i, got %i\n"
957 " -> `%s` has been declared here: %s:%i",
958 fewmany, fval->name, (int)fun->expression.params_count, (int)paramcount,
959 fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
967 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
969 if (!sy->ops_count) {
970 parseerror(parser, "unmatched closing paren");
973 /* this would for bit a + (x) because there are no operators inside (x)
974 if (sy->ops[sy->ops_count-1].paren == 1) {
975 parseerror(parser, "empty parenthesis expression");
979 while (sy->ops_count) {
980 if (sy->ops[sy->ops_count-1].paren == 'f') {
981 if (!parser_close_call(parser, sy))
985 if (sy->ops[sy->ops_count-1].paren == 1) {
987 return !functions_only;
989 if (!parser_sy_pop(parser, sy))
995 static void parser_reclassify_token(parser_t *parser)
998 for (i = 0; i < operator_count; ++i) {
999 if (!strcmp(parser_tokval(parser), operators[i].op)) {
1000 parser->tok = TOKEN_OPERATOR;
1006 static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma)
1008 ast_expression *expr = NULL;
1010 bool wantop = false;
1011 bool gotmemberof = false;
1013 /* count the parens because an if starts with one, so the
1014 * end of a condition is an unmatched closing paren
1018 MEM_VECTOR_INIT(&sy, out);
1019 MEM_VECTOR_INIT(&sy, ops);
1021 parser->lex->flags.noops = false;
1023 parser_reclassify_token(parser);
1028 gotmemberof = false;
1030 parser->memberof = 0;
1032 if (parser->tok == TOKEN_IDENT)
1034 ast_expression *var;
1036 parseerror(parser, "expected operator or end of statement");
1041 if (opts_standard == COMPILER_GMQCC)
1043 if (parser->memberof == TYPE_ENTITY) {
1044 /* still get vars first since there could be a fieldpointer */
1045 var = parser_find_var(parser, parser_tokval(parser));
1047 var = parser_find_field(parser, parser_tokval(parser));
1049 else if (parser->memberof == TYPE_VECTOR)
1051 parseerror(parser, "TODO: implement effective vector member access");
1054 else if (parser->memberof) {
1055 parseerror(parser, "namespace for member not found");
1059 var = parser_find_var(parser, parser_tokval(parser));
1061 var = parser_find_var(parser, parser_tokval(parser));
1063 var = parser_find_field(parser, parser_tokval(parser));
1066 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1069 if (ast_istype(var, ast_value))
1070 ((ast_value*)var)->uses++;
1071 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), var))) {
1072 parseerror(parser, "out of memory");
1075 DEBUGSHUNTDO(printf("push %s\n", parser_tokval(parser)));
1077 else if (parser->tok == TOKEN_FLOATCONST) {
1080 parseerror(parser, "expected operator or end of statement, got constant");
1084 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1087 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1088 parseerror(parser, "out of memory");
1091 DEBUGSHUNTDO(printf("push %g\n", parser_token(parser)->constval.f));
1093 else if (parser->tok == TOKEN_INTCONST) {
1096 parseerror(parser, "expected operator or end of statement, got constant");
1100 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1103 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1104 parseerror(parser, "out of memory");
1107 DEBUGSHUNTDO(printf("push %i\n", parser_token(parser)->constval.i));
1109 else if (parser->tok == TOKEN_STRINGCONST) {
1112 parseerror(parser, "expected operator or end of statement, got constant");
1116 val = parser_const_string(parser, parser_tokval(parser));
1119 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1120 parseerror(parser, "out of memory");
1123 DEBUGSHUNTDO(printf("push string\n"));
1125 else if (parser->tok == TOKEN_VECTORCONST) {
1128 parseerror(parser, "expected operator or end of statement, got constant");
1132 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1135 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1136 parseerror(parser, "out of memory");
1139 DEBUGSHUNTDO(printf("push '%g %g %g'\n",
1140 parser_token(parser)->constval.v.x,
1141 parser_token(parser)->constval.v.y,
1142 parser_token(parser)->constval.v.z));
1144 else if (parser->tok == '(') {
1145 parseerror(parser, "internal error: '(' should be classified as operator");
1148 else if (parser->tok == ')') {
1150 DEBUGSHUNTDO(printf("do[op] )\n"));
1154 /* we do expect an operator next */
1155 /* closing an opening paren */
1156 if (!parser_close_paren(parser, &sy, false))
1159 DEBUGSHUNTDO(printf("do[nop] )\n"));
1163 /* allowed for function calls */
1164 if (!parser_close_paren(parser, &sy, true))
1169 else if (parser->tok != TOKEN_OPERATOR) {
1171 parseerror(parser, "expected operator or end of statement");
1178 /* classify the operator */
1179 /* TODO: suffix operators */
1180 const oper_info *op;
1181 const oper_info *olast = NULL;
1183 for (o = 0; o < operator_count; ++o) {
1184 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1185 !(operators[o].flags & OP_SUFFIX) && /* remove this */
1186 !strcmp(parser_tokval(parser), operators[o].op))
1191 if (o == operator_count) {
1192 /* no operator found... must be the end of the statement */
1195 /* found an operator */
1198 /* when declaring variables, a comma starts a new variable */
1199 if (op->id == opid1(',') && !parens && stopatcomma) {
1200 /* fixup the token */
1205 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
1206 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
1209 (op->prec < olast->prec) ||
1210 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1212 if (!parser_sy_pop(parser, &sy))
1214 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
1215 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
1220 if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) {
1221 /* for gmqcc standard: open up the namespace of the previous type */
1222 ast_expression *prevex = sy.out[sy.out_count-1].out;
1224 parseerror(parser, "unexpected member operator");
1227 if (prevex->expression.vtype == TYPE_ENTITY)
1228 parser->memberof = TYPE_ENTITY;
1229 else if (prevex->expression.vtype == TYPE_VECTOR)
1230 parser->memberof = TYPE_VECTOR;
1232 parseerror(parser, "type error: type has no members");
1238 if (op->id == opid1('(')) {
1240 DEBUGSHUNTDO(printf("push [op] (\n"));
1242 /* we expected an operator, this is the function-call operator */
1243 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f', sy.out_count-1))) {
1244 parseerror(parser, "out of memory");
1249 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1, 0))) {
1250 parseerror(parser, "out of memory");
1253 DEBUGSHUNTDO(printf("push [nop] (\n"));
1257 DEBUGSHUNTDO(printf("push operator %s\n", op->op));
1258 if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
1263 if (!parser_next(parser)) {
1266 if (parser->tok == ';' || parser->tok == ']') {
1271 while (sy.ops_count) {
1272 if (!parser_sy_pop(parser, &sy))
1276 parser->lex->flags.noops = true;
1277 if (!sy.out_count) {
1278 parseerror(parser, "empty expression");
1281 expr = sy.out[0].out;
1282 MEM_VECTOR_CLEAR(&sy, out);
1283 MEM_VECTOR_CLEAR(&sy, ops);
1284 DEBUGSHUNTDO(printf("shunt done\n"));
1288 parser->lex->flags.noops = true;
1289 MEM_VECTOR_CLEAR(&sy, out);
1290 MEM_VECTOR_CLEAR(&sy, ops);
1294 static ast_expression* parse_expression(parser_t *parser, bool stopatcomma)
1296 ast_expression *e = parse_expression_leave(parser, stopatcomma);
1299 if (!parser_next(parser)) {
1306 static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1309 ast_expression *cond, *ontrue, *onfalse = NULL;
1311 lex_ctx ctx = parser_ctx(parser);
1313 /* skip the 'if' and check for opening paren */
1314 if (!parser_next(parser) || parser->tok != '(') {
1315 parseerror(parser, "expected 'if' condition in parenthesis");
1318 /* parse into the expression */
1319 if (!parser_next(parser)) {
1320 parseerror(parser, "expected 'if' condition after opening paren");
1323 /* parse the condition */
1324 cond = parse_expression_leave(parser, false);
1328 if (parser->tok != ')') {
1329 parseerror(parser, "expected closing paren after 'if' condition");
1333 /* parse into the 'then' branch */
1334 if (!parser_next(parser)) {
1335 parseerror(parser, "expected statement for on-true branch of 'if'");
1339 ontrue = parse_statement_or_block(parser);
1344 /* check for an else */
1345 if (!strcmp(parser_tokval(parser), "else")) {
1346 /* parse into the 'else' branch */
1347 if (!parser_next(parser)) {
1348 parseerror(parser, "expected on-false branch after 'else'");
1353 onfalse = parse_statement_or_block(parser);
1361 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1362 *out = (ast_expression*)ifthen;
1366 static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1369 ast_expression *cond, *ontrue;
1371 lex_ctx ctx = parser_ctx(parser);
1373 /* skip the 'while' and check for opening paren */
1374 if (!parser_next(parser) || parser->tok != '(') {
1375 parseerror(parser, "expected 'while' condition in parenthesis");
1378 /* parse into the expression */
1379 if (!parser_next(parser)) {
1380 parseerror(parser, "expected 'while' condition after opening paren");
1383 /* parse the condition */
1384 cond = parse_expression_leave(parser, false);
1388 if (parser->tok != ')') {
1389 parseerror(parser, "expected closing paren after 'while' condition");
1393 /* parse into the 'then' branch */
1394 if (!parser_next(parser)) {
1395 parseerror(parser, "expected while-loop body");
1399 ontrue = parse_statement_or_block(parser);
1405 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1406 *out = (ast_expression*)aloop;
1410 static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1413 ast_expression *cond, *ontrue;
1415 lex_ctx ctx = parser_ctx(parser);
1417 /* skip the 'do' and get the body */
1418 if (!parser_next(parser)) {
1419 parseerror(parser, "expected loop body");
1422 ontrue = parse_statement_or_block(parser);
1426 /* expect the "while" */
1427 if (parser->tok != TOKEN_KEYWORD ||
1428 strcmp(parser_tokval(parser), "while"))
1430 parseerror(parser, "expected 'while' and condition");
1435 /* skip the 'while' and check for opening paren */
1436 if (!parser_next(parser) || parser->tok != '(') {
1437 parseerror(parser, "expected 'while' condition in parenthesis");
1441 /* parse into the expression */
1442 if (!parser_next(parser)) {
1443 parseerror(parser, "expected 'while' condition after opening paren");
1447 /* parse the condition */
1448 cond = parse_expression_leave(parser, false);
1452 if (parser->tok != ')') {
1453 parseerror(parser, "expected closing paren after 'while' condition");
1459 if (!parser_next(parser) || parser->tok != ';') {
1460 parseerror(parser, "expected semicolon after condition");
1466 if (!parser_next(parser)) {
1467 parseerror(parser, "parse error");
1473 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1474 *out = (ast_expression*)aloop;
1478 static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1481 ast_expression *initexpr, *cond, *increment, *ontrue;
1482 size_t oldblocklocal;
1485 lex_ctx ctx = parser_ctx(parser);
1487 oldblocklocal = parser->blocklocal;
1488 parser->blocklocal = parser->locals_count;
1495 /* skip the 'while' and check for opening paren */
1496 if (!parser_next(parser) || parser->tok != '(') {
1497 parseerror(parser, "expected 'for' expressions in parenthesis");
1500 /* parse into the expression */
1501 if (!parser_next(parser)) {
1502 parseerror(parser, "expected 'for' initializer after opening paren");
1506 if (parser->tok == TOKEN_TYPENAME) {
1507 if (opts_standard != COMPILER_GMQCC) {
1508 if (parsewarning(parser, WARN_EXTENSIONS,
1509 "current standard does not allow variable declarations in for-loop initializers"))
1513 parseerror(parser, "TODO: assignment of new variables to be non-const");
1515 if (!parse_variable(parser, block, true))
1518 else if (parser->tok != ';')
1520 initexpr = parse_expression_leave(parser, false);
1525 /* move on to condition */
1526 if (parser->tok != ';') {
1527 parseerror(parser, "expected semicolon after for-loop initializer");
1530 if (!parser_next(parser)) {
1531 parseerror(parser, "expected for-loop condition");
1535 /* parse the condition */
1536 if (parser->tok != ';') {
1537 cond = parse_expression_leave(parser, false);
1542 /* move on to incrementor */
1543 if (parser->tok != ';') {
1544 parseerror(parser, "expected semicolon after for-loop initializer");
1547 if (!parser_next(parser)) {
1548 parseerror(parser, "expected for-loop condition");
1552 /* parse the incrementor */
1553 if (parser->tok != ')') {
1554 increment = parse_expression_leave(parser, false);
1557 if (!ast_istype(increment, ast_store) &&
1558 !ast_istype(increment, ast_call) &&
1559 !ast_istype(increment, ast_binstore))
1561 if (genwarning(ast_ctx(increment), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
1567 if (parser->tok != ')') {
1568 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1571 /* parse into the 'then' branch */
1572 if (!parser_next(parser)) {
1573 parseerror(parser, "expected for-loop body");
1576 ontrue = parse_statement_or_block(parser);
1581 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1582 *out = (ast_expression*)aloop;
1584 while (parser->locals_count > parser->blocklocal)
1585 retval = retval && parser_pop_local(parser);
1586 parser->blocklocal = oldblocklocal;
1589 if (initexpr) ast_delete(initexpr);
1590 if (cond) ast_delete(cond);
1591 if (increment) ast_delete(increment);
1592 while (parser->locals_count > parser->blocklocal)
1593 (void)!parser_pop_local(parser);
1594 parser->blocklocal = oldblocklocal;
1598 static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out)
1600 if (parser->tok == TOKEN_TYPENAME || parser->tok == '.')
1602 /* local variable */
1604 parseerror(parser, "cannot declare a variable from here");
1607 if (opts_standard == COMPILER_QCC) {
1608 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
1611 if (!parse_variable(parser, block, false))
1616 else if (parser->tok == TOKEN_KEYWORD)
1618 if (!strcmp(parser_tokval(parser), "local"))
1621 parseerror(parser, "cannot declare a local variable here");
1624 if (!parser_next(parser)) {
1625 parseerror(parser, "expected variable declaration");
1628 if (!parse_variable(parser, block, true))
1633 else if (!strcmp(parser_tokval(parser), "return"))
1635 ast_expression *exp = NULL;
1636 ast_return *ret = NULL;
1637 ast_value *expected = parser->function->vtype;
1639 if (!parser_next(parser)) {
1640 parseerror(parser, "expected return expression");
1644 if (parser->tok != ';') {
1645 exp = parse_expression(parser, false);
1649 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
1650 parseerror(parser, "return with invalid expression");
1653 ret = ast_return_new(exp->expression.node.context, exp);
1659 if (!parser_next(parser))
1660 parseerror(parser, "parse error");
1661 if (expected->expression.next->expression.vtype != TYPE_VOID) {
1662 if (opts_standard != COMPILER_GMQCC)
1663 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
1665 parseerror(parser, "return without value");
1667 ret = ast_return_new(parser_ctx(parser), NULL);
1669 *out = (ast_expression*)ret;
1672 else if (!strcmp(parser_tokval(parser), "if"))
1674 return parse_if(parser, block, out);
1676 else if (!strcmp(parser_tokval(parser), "while"))
1678 return parse_while(parser, block, out);
1680 else if (!strcmp(parser_tokval(parser), "do"))
1682 return parse_dowhile(parser, block, out);
1684 else if (!strcmp(parser_tokval(parser), "for"))
1686 if (opts_standard == COMPILER_QCC) {
1687 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
1690 return parse_for(parser, block, out);
1692 parseerror(parser, "Unexpected keyword");
1695 else if (parser->tok == '{')
1698 inner = parse_block(parser, false);
1701 *out = (ast_expression*)inner;
1706 ast_expression *exp = parse_expression(parser, false);
1710 if (!ast_istype(exp, ast_store) &&
1711 !ast_istype(exp, ast_call) &&
1712 !ast_istype(exp, ast_binstore))
1714 if (genwarning(ast_ctx(exp), WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
1721 static bool GMQCC_WARN parser_pop_local(parser_t *parser)
1724 parser->locals_count--;
1726 ve = &parser->locals[parser->locals_count];
1727 if (ast_istype(ve->var, ast_value) && !(((ast_value*)(ve->var))->uses)) {
1728 if (parsewarning(parser, WARN_UNUSED_VARIABLE, "unused variable: `%s`", ve->name))
1731 mem_d(parser->locals[parser->locals_count].name);
1735 static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn)
1737 size_t oldblocklocal;
1740 oldblocklocal = parser->blocklocal;
1741 parser->blocklocal = parser->locals_count;
1743 if (!parser_next(parser)) { /* skip the '{' */
1744 parseerror(parser, "expected function body");
1748 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
1750 ast_expression *expr;
1751 if (parser->tok == '}')
1754 if (!parse_statement(parser, block, &expr)) {
1755 /* parseerror(parser, "parse error"); */
1761 if (!ast_block_exprs_add(block, expr)) {
1768 if (parser->tok != '}') {
1771 if (warnreturn && parser->function->vtype->expression.next->expression.vtype != TYPE_VOID)
1773 if (!block->exprs_count ||
1774 !ast_istype(block->exprs[block->exprs_count-1], ast_return))
1776 if (parsewarning(parser, WARN_MISSING_RETURN_VALUES, "control reaches end of non-void function")) {
1782 (void)parser_next(parser);
1786 while (parser->locals_count > parser->blocklocal)
1787 retval = retval && parser_pop_local(parser);
1788 parser->blocklocal = oldblocklocal;
1792 static ast_block* parse_block(parser_t *parser, bool warnreturn)
1795 block = ast_block_new(parser_ctx(parser));
1798 if (!parse_block_into(parser, block, warnreturn)) {
1799 ast_block_delete(block);
1805 static ast_expression* parse_statement_or_block(parser_t *parser)
1807 ast_expression *expr = NULL;
1808 if (parser->tok == '{')
1809 return (ast_expression*)parse_block(parser, false);
1810 if (!parse_statement(parser, NULL, &expr))
1816 static bool create_vector_members(parser_t *parser, ast_value *var, varentry_t *ve)
1819 size_t len = strlen(var->name);
1821 for (i = 0; i < 3; ++i) {
1822 ve[i].var = (ast_expression*)ast_member_new(ast_ctx(var), (ast_expression*)var, i);
1826 ve[i].name = (char*)mem_a(len+3);
1828 ast_delete(ve[i].var);
1832 memcpy(ve[i].name, var->name, len);
1833 ve[i].name[len] = '_';
1834 ve[i].name[len+1] = 'x'+i;
1835 ve[i].name[len+2] = 0;
1844 ast_delete(ve[i].var);
1851 static bool parse_function_body(parser_t *parser, ast_value *var)
1853 ast_block *block = NULL;
1858 ast_expression *framenum = NULL;
1859 ast_expression *nextthink = NULL;
1860 /* None of the following have to be deleted */
1861 ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
1862 ast_expression *gbl_time = NULL, *gbl_self = NULL;
1863 bool has_frame_think;
1867 has_frame_think = false;
1868 old = parser->function;
1870 if (var->expression.variadic) {
1871 if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
1872 "variadic function with implementation will not be able to access additional parameters"))
1878 if (parser->tok == '[') {
1879 /* got a frame definition: [ framenum, nextthink ]
1880 * this translates to:
1881 * self.frame = framenum;
1882 * self.nextthink = time + 0.1;
1883 * self.think = nextthink;
1887 fld_think = parser_find_field(parser, "think");
1888 fld_nextthink = parser_find_field(parser, "nextthink");
1889 fld_frame = parser_find_field(parser, "frame");
1890 if (!fld_think || !fld_nextthink || !fld_frame) {
1891 parseerror(parser, "cannot use [frame,think] notation without the required fields");
1892 parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
1895 gbl_time = parser_find_global(parser, "time");
1896 gbl_self = parser_find_global(parser, "self");
1897 if (!gbl_time || !gbl_self) {
1898 parseerror(parser, "cannot use [frame,think] notation without the required globals");
1899 parseerror(parser, "please declare the following globals: `time`, `self`");
1903 if (!parser_next(parser))
1906 framenum = parse_expression_leave(parser, true);
1908 parseerror(parser, "expected a framenumber constant in[frame,think] notation");
1911 if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->isconst) {
1912 ast_unref(framenum);
1913 parseerror(parser, "framenumber in [frame,think] notation must be a constant");
1917 if (parser->tok != ',') {
1918 ast_unref(framenum);
1919 parseerror(parser, "expected comma after frame number in [frame,think] notation");
1920 parseerror(parser, "Got a %i\n", parser->tok);
1924 if (!parser_next(parser)) {
1925 ast_unref(framenum);
1929 if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
1931 /* qc allows the use of not-yet-declared functions here
1932 * - this automatically creates a prototype */
1934 ast_value *thinkfunc;
1935 ast_expression *functype = fld_think->expression.next;
1937 thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->expression.vtype);
1938 if (!thinkfunc || !ast_type_adopt(thinkfunc, functype)) {
1939 ast_unref(framenum);
1940 parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
1944 if (!parser_next(parser)) {
1945 ast_unref(framenum);
1946 ast_delete(thinkfunc);
1950 varent.var = (ast_expression*)thinkfunc;
1951 varent.name = util_strdup(thinkfunc->name);
1952 if (!parser_t_globals_add(parser, varent)) {
1953 ast_unref(framenum);
1954 ast_delete(thinkfunc);
1957 nextthink = (ast_expression*)thinkfunc;
1960 nextthink = parse_expression_leave(parser, true);
1962 ast_unref(framenum);
1963 parseerror(parser, "expected a think-function in [frame,think] notation");
1968 if (!ast_istype(nextthink, ast_value)) {
1969 parseerror(parser, "think-function in [frame,think] notation must be a constant");
1973 if (retval && parser->tok != ']') {
1974 parseerror(parser, "expected closing `]` for [frame,think] notation");
1978 if (retval && !parser_next(parser)) {
1982 if (retval && parser->tok != '{') {
1983 parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
1988 ast_unref(nextthink);
1989 ast_unref(framenum);
1993 has_frame_think = true;
1996 block = ast_block_new(parser_ctx(parser));
1998 parseerror(parser, "failed to allocate block");
1999 if (has_frame_think) {
2000 ast_unref(nextthink);
2001 ast_unref(framenum);
2006 if (has_frame_think) {
2008 ast_expression *self_frame;
2009 ast_expression *self_nextthink;
2010 ast_expression *self_think;
2011 ast_expression *time_plus_1;
2012 ast_store *store_frame;
2013 ast_store *store_nextthink;
2014 ast_store *store_think;
2016 ctx = parser_ctx(parser);
2017 self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
2018 self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
2019 self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
2021 time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
2022 gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
2024 if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
2025 if (self_frame) ast_delete(self_frame);
2026 if (self_nextthink) ast_delete(self_nextthink);
2027 if (self_think) ast_delete(self_think);
2028 if (time_plus_1) ast_delete(time_plus_1);
2034 store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
2035 store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
2036 store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
2039 ast_delete(self_frame);
2042 if (!store_nextthink) {
2043 ast_delete(self_nextthink);
2047 ast_delete(self_think);
2051 if (store_frame) ast_delete(store_frame);
2052 if (store_nextthink) ast_delete(store_nextthink);
2053 if (store_think) ast_delete(store_think);
2056 if (retval && !ast_block_exprs_add(block, (ast_expression*)store_frame)) {
2057 ast_delete(store_frame);
2058 ast_delete(store_nextthink);
2059 ast_delete(store_think);
2063 if (retval && !ast_block_exprs_add(block, (ast_expression*)store_nextthink)) {
2064 ast_delete(store_nextthink);
2065 ast_delete(store_think);
2069 if (retval && !ast_block_exprs_add(block, (ast_expression*)store_think) )
2071 ast_delete(store_think);
2077 parseerror(parser, "failed to generate code for [frame,think]");
2078 ast_unref(nextthink);
2079 ast_unref(framenum);
2085 for (parami = 0; parami < var->expression.params_count; ++parami) {
2088 ast_value *param = var->expression.params[parami];
2090 if (param->expression.vtype != TYPE_VECTOR &&
2091 (param->expression.vtype != TYPE_FIELD ||
2092 param->expression.next->expression.vtype != TYPE_VECTOR))
2097 if (!create_vector_members(parser, param, ve)) {
2098 ast_block_delete(block);
2102 for (e = 0; e < 3; ++e) {
2103 if (!parser_t_locals_add(parser, ve[e]))
2105 if (!ast_block_collect(block, ve[e].var)) {
2106 parser->locals_count--;
2109 ve[e].var = NULL; /* collected */
2112 parser->locals -= e;
2117 ast_block_delete(block);
2122 func = ast_function_new(ast_ctx(var), var->name, var);
2124 parseerror(parser, "failed to allocate function for `%s`", var->name);
2125 ast_block_delete(block);
2128 if (!parser_t_functions_add(parser, func)) {
2129 parseerror(parser, "failed to allocate slot for function `%s`", var->name);
2130 ast_block_delete(block);
2134 parser->function = func;
2135 if (!parse_block_into(parser, block, true)) {
2136 ast_block_delete(block);
2140 if (!ast_function_blocks_add(func, block)) {
2141 ast_block_delete(block);
2145 parser->function = old;
2146 while (parser->locals_count)
2147 retval = retval && parser_pop_local(parser);
2149 if (parser->tok == ';')
2150 return parser_next(parser);
2151 else if (opts_standard == COMPILER_QCC)
2152 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
2156 parser->functions_count--;
2158 ast_function_delete(func);
2159 var->constval.vfunc = NULL;
2162 while (parser->locals_count) {
2163 parser->locals_count--;
2164 mem_d(parser->locals[parser->locals_count].name);
2166 parser->function = old;
2171 MEM_VECTOR_MAKE(ast_value*, p);
2173 MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
2175 static ast_value *parse_typename(parser_t *parser, ast_value **storebase);
2176 static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
2184 bool variadic = false;
2186 ctx = parser_ctx(parser);
2188 /* for the sake of less code we parse-in in this function */
2189 if (!parser_next(parser)) {
2190 parseerror(parser, "expected parameter list");
2194 MEM_VECTOR_INIT(¶ms, p);
2196 /* parse variables until we hit a closing paren */
2197 while (parser->tok != ')') {
2199 /* there must be commas between them */
2200 if (parser->tok != ',') {
2201 parseerror(parser, "expected comma or end of parameter list");
2204 if (!parser_next(parser)) {
2205 parseerror(parser, "expected parameter");
2211 if (parser->tok == TOKEN_DOTS) {
2212 /* '...' indicates a varargs function */
2214 if (!parser_next(parser)) {
2215 parseerror(parser, "expected parameter");
2218 if (parser->tok != ')') {
2219 parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
2225 /* for anything else just parse a typename */
2226 param = parse_typename(parser, NULL);
2229 if (!paramlist_t_p_add(¶ms, param))
2235 if (params.p_count > 8)
2236 parseerror(parser, "more than 8 parameters are currently not supported");
2239 if (!parser_next(parser)) {
2240 parseerror(parser, "parse error after typename");
2244 /* now turn 'var' into a function type */
2245 fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
2246 fval->expression.next = (ast_expression*)var;
2247 fval->expression.variadic = variadic;
2250 MEM_VECTOR_MOVE(¶ms, p, &var->expression, params);
2256 for (i = 0; i < params.p_count; ++i)
2257 ast_delete(params.p[i]);
2258 MEM_VECTOR_CLEAR(¶ms, p);
2262 /* Parse a complete typename.
2263 * for single-variables (ie. function parameters or typedefs) storebase should be NULL
2264 * but when parsing variables separated by comma
2265 * 'storebase' should point to where the base-type should be kept.
2266 * The base type makes up every bit of type information which comes *before* the
2269 * The following will be parsed in its entirety:
2271 * The 'basetype' in this case is 'void()'
2272 * and if there's a comma after it, say:
2274 * then the type-information 'void()' can be stored in 'storebase'
2276 static ast_value *parse_typename(parser_t *parser, ast_value **storebase)
2278 ast_value *var, *tmp;
2281 const char *name = NULL;
2282 bool isfield = false;
2284 ctx = parser_ctx(parser);
2286 /* types may start with a dot */
2287 if (parser->tok == '.') {
2289 /* if we parsed a dot we need a typename now */
2290 if (!parser_next(parser)) {
2291 parseerror(parser, "expected typename for field definition");
2294 if (parser->tok != TOKEN_TYPENAME) {
2295 parseerror(parser, "expected typename");
2300 /* generate the basic type value */
2301 var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
2302 /* do not yet turn into a field - remember:
2303 * .void() foo; is a field too
2304 * .void()() foo; is a function
2308 if (!parser_next(parser)) {
2310 parseerror(parser, "parse error after typename");
2314 /* an opening paren now starts the parameter-list of a function */
2315 if (parser->tok == '(') {
2316 var = parse_parameter_list(parser, var);
2320 /* This is the point where we can turn it into a field */
2322 /* turn it into a field if desired */
2323 tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
2324 tmp->expression.next = (ast_expression*)var;
2328 while (parser->tok == '(') {
2329 var = parse_parameter_list(parser, var);
2334 /* store the base if requested */
2336 *storebase = ast_value_copy(var);
2339 /* there may be a name now */
2340 if (parser->tok == TOKEN_IDENT) {
2341 name = util_strdup(parser_tokval(parser));
2343 if (!parser_next(parser)) {
2344 parseerror(parser, "error after variable or field declaration");
2349 /* now there may be function parens again */
2350 if (parser->tok == '(' && opts_standard == COMPILER_QCC)
2351 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
2352 while (parser->tok == '(') {
2353 var = parse_parameter_list(parser, var);
2361 /* finally name it */
2363 if (!ast_value_set_name(var, name)) {
2365 parseerror(parser, "internal error: failed to set name");
2368 /* free the name, ast_value_set_name duplicates */
2375 static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields)
2379 ast_expression *old;
2383 ast_value *basetype = NULL;
2385 bool isparam = false;
2386 bool isvector = false;
2387 bool cleanvar = true;
2389 varentry_t varent, ve[3];
2391 /* get the first complete variable */
2392 var = parse_typename(parser, &basetype);
2395 ast_delete(basetype);
2399 memset(&varent, 0, sizeof(varent));
2400 memset(&ve, 0, sizeof(ve));
2405 /* Part 0: finish the type */
2406 while (parser->tok == '(') {
2407 if (opts_standard == COMPILER_QCC)
2408 parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
2409 var = parse_parameter_list(parser, var);
2417 * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
2418 * Also: if there was a prototype, `var` will be deleted and set to `proto` which
2419 * is then filled with the previous definition and the parameter-names replaced.
2422 /* Deal with end_sys_ vars */
2424 if (!strcmp(var->name, "end_sys_globals")) {
2425 parser->crc_globals = parser->globals_count;
2428 else if (!strcmp(var->name, "end_sys_fields")) {
2429 parser->crc_fields = parser->fields_count;
2432 if (was_end && var->expression.vtype == TYPE_FIELD) {
2433 if (parsewarning(parser, WARN_END_SYS_FIELDS,
2434 "global '%s' hint should not be a field",
2435 parser_tokval(parser)))
2442 if (!nofields && var->expression.vtype == TYPE_FIELD)
2444 /* deal with field declarations */
2445 old = parser_find_field(parser, var->name);
2447 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
2448 var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
2457 parseerror(parser, "field `%s` already declared here: %s:%i",
2458 var->name, ast_ctx(old).file, ast_ctx(old).line);
2463 if (opts_standard == COMPILER_QCC &&
2464 (old = parser_find_global(parser, var->name)))
2466 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
2467 parseerror(parser, "field `%s` already declared here: %s:%i",
2468 var->name, ast_ctx(old).file, ast_ctx(old).line);
2475 /* deal with other globals */
2476 old = parser_find_global(parser, var->name);
2477 if (old && var->expression.vtype == TYPE_FUNCTION && old->expression.vtype == TYPE_FUNCTION)
2479 /* This is a function which had a prototype */
2480 if (!ast_istype(old, ast_value)) {
2481 parseerror(parser, "internal error: prototype is not an ast_value");
2485 proto = (ast_value*)old;
2486 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
2487 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
2489 ast_ctx(proto).file, ast_ctx(proto).line);
2493 /* we need the new parameter-names */
2494 for (i = 0; i < proto->expression.params_count; ++i)
2495 ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
2503 parseerror(parser, "global `%s` already declared here: %s:%i",
2504 var->name, ast_ctx(old).file, ast_ctx(old).line);
2508 if (opts_standard == COMPILER_QCC &&
2509 (old = parser_find_field(parser, var->name)))
2511 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
2512 parseerror(parser, "global `%s` already declared here: %s:%i",
2513 var->name, ast_ctx(old).file, ast_ctx(old).line);
2520 else /* it's not a global */
2522 old = parser_find_local(parser, var->name, parser->blocklocal, &isparam);
2523 if (old && !isparam) {
2524 parseerror(parser, "local `%s` already declared here: %s:%i",
2525 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
2529 old = parser_find_local(parser, var->name, 0, &isparam);
2530 if (old && isparam) {
2531 if (parsewarning(parser, WARN_LOCAL_SHADOWS,
2532 "local `%s` is shadowing a parameter", var->name))
2534 parseerror(parser, "local `%s` already declared here: %s:%i",
2535 var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
2539 if (opts_standard != COMPILER_GMQCC) {
2548 * Create the global/local, and deal with vector types.
2551 if (var->expression.vtype == TYPE_VECTOR)
2553 else if (var->expression.vtype == TYPE_FIELD &&
2554 var->expression.next->expression.vtype == TYPE_VECTOR)
2558 if (!create_vector_members(parser, var, ve)) {
2564 varent.name = util_strdup(var->name);
2565 varent.var = (ast_expression*)var;
2568 /* deal with global variables, fields, functions */
2569 if (!nofields && var->expression.vtype == TYPE_FIELD) {
2570 if (!(retval = parser_t_fields_add(parser, varent)))
2573 for (i = 0; i < 3; ++i) {
2574 if (!(retval = parser_t_fields_add(parser, ve[i])))
2578 parser->fields_count -= i+1;
2584 if (!(retval = parser_t_globals_add(parser, varent)))
2587 for (i = 0; i < 3; ++i) {
2588 if (!(retval = parser_t_globals_add(parser, ve[i])))
2592 parser->globals_count -= i+1;
2598 if (!(retval = parser_t_locals_add(parser, varent)))
2600 if (!(retval = ast_block_locals_add(localblock, var))) {
2601 parser->locals_count--;
2605 for (i = 0; i < 3; ++i) {
2606 if (!(retval = parser_t_locals_add(parser, ve[i])))
2608 if (!(retval = ast_block_collect(localblock, ve[i].var)))
2610 ve[i].var = NULL; /* from here it's being collected in the block */
2613 parser->locals_count -= i+1;
2614 localblock->locals_count--;
2621 ve[0].name = ve[1].name = ve[2].name = NULL;
2622 ve[0].var = ve[1].var = ve[2].var = NULL;
2627 if (parser->tok == ';') {
2628 ast_delete(basetype);
2629 if (!parser_next(parser)) {
2630 parseerror(parser, "error after variable declaration");
2636 if (parser->tok == ',')
2639 if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
2640 parseerror(parser, "missing comma or semicolon while parsing variables");
2644 if (localblock && opts_standard == COMPILER_QCC) {
2645 if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
2646 "initializing expression turns variable `%s` into a constant in this standard",
2653 if (parser->tok != '{') {
2654 if (parser->tok != '=') {
2655 parseerror(parser, "missing semicolon or initializer");
2659 if (!parser_next(parser)) {
2660 parseerror(parser, "error parsing initializer");
2664 else if (opts_standard == COMPILER_QCC) {
2665 parseerror(parser, "expected '=' before function body in this standard");
2668 if (parser->tok == '#') {
2672 parseerror(parser, "cannot declare builtins within functions");
2675 if (var->expression.vtype != TYPE_FUNCTION) {
2676 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
2679 if (!parser_next(parser)) {
2680 parseerror(parser, "expected builtin number");
2683 if (parser->tok != TOKEN_INTCONST) {
2684 parseerror(parser, "builtin number must be an integer constant");
2687 if (parser_token(parser)->constval.i <= 0) {
2688 parseerror(parser, "builtin number must be an integer greater than zero");
2692 func = ast_function_new(ast_ctx(var), var->name, var);
2694 parseerror(parser, "failed to allocate function for `%s`", var->name);
2697 if (!parser_t_functions_add(parser, func)) {
2698 parseerror(parser, "failed to allocate slot for function `%s`", var->name);
2699 ast_function_delete(func);
2700 var->constval.vfunc = NULL;
2704 func->builtin = -parser_token(parser)->constval.i;
2706 if (!parser_next(parser)) {
2707 parseerror(parser, "expected comma or semicolon");
2708 ast_function_delete(func);
2709 var->constval.vfunc = NULL;
2713 else if (parser->tok == '{' || parser->tok == '[')
2716 parseerror(parser, "cannot declare functions within functions");
2720 if (!parse_function_body(parser, var))
2722 ast_delete(basetype);
2725 ast_expression *cexp;
2728 cexp = parse_expression_leave(parser, true);
2732 cval = (ast_value*)cexp;
2733 if (!ast_istype(cval, ast_value) || !cval->isconst)
2734 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
2737 var->isconst = true;
2738 if (cval->expression.vtype == TYPE_STRING)
2739 var->constval.vstring = parser_strdup(cval->constval.vstring);
2741 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
2747 if (parser->tok == ',') {
2748 if (!parser_next(parser)) {
2749 parseerror(parser, "expected another variable");
2753 if (parser->tok != TOKEN_IDENT) {
2754 parseerror(parser, "expected another variable");
2757 var = ast_value_copy(basetype);
2759 ast_value_set_name(var, parser_tokval(parser));
2760 if (!parser_next(parser)) {
2761 parseerror(parser, "error parsing variable declaration");
2767 if (parser->tok != ';') {
2768 parseerror(parser, "missing semicolon after variables");
2772 if (!parser_next(parser)) {
2773 parseerror(parser, "parse error after variable declaration");
2777 ast_delete(basetype);
2781 if (cleanvar && var)
2783 ast_delete(basetype);
2787 ast_delete(basetype);
2788 if (cleanvar && var)
2790 if (varent.name) mem_d(varent.name);
2791 if (ve[0].name) mem_d(ve[0].name);
2792 if (ve[1].name) mem_d(ve[1].name);
2793 if (ve[2].name) mem_d(ve[2].name);
2794 if (ve[0].var) mem_d(ve[0].var);
2795 if (ve[1].var) mem_d(ve[1].var);
2796 if (ve[2].var) mem_d(ve[2].var);
2800 static bool parser_global_statement(parser_t *parser)
2802 if (parser->tok == TOKEN_TYPENAME || parser->tok == '.')
2804 return parse_variable(parser, NULL, false);
2806 else if (parser->tok == TOKEN_KEYWORD)
2808 /* handle 'var' and 'const' */
2809 if (!strcmp(parser_tokval(parser), "var")) {
2810 if (!parser_next(parser)) {
2811 parseerror(parser, "expected variable declaration after 'var'");
2814 return parse_variable(parser, NULL, true);
2818 else if (parser->tok == '$')
2820 if (!parser_next(parser)) {
2821 parseerror(parser, "parse error");
2827 parseerror(parser, "unexpected token: %s", parser->lex->tok.value);
2833 static parser_t *parser;
2837 parser = (parser_t*)mem_a(sizeof(parser_t));
2841 memset(parser, 0, sizeof(*parser));
2845 bool parser_compile(const char *filename)
2847 parser->lex = lex_open(filename);
2849 printf("failed to open file \"%s\"\n", filename);
2853 /* initial lexer/parser state */
2854 parser->lex->flags.noops = true;
2856 if (parser_next(parser))
2858 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2860 if (!parser_global_statement(parser)) {
2861 if (parser->tok == TOKEN_EOF)
2862 parseerror(parser, "unexpected eof");
2863 else if (!parser->errors)
2864 parseerror(parser, "there have been errors, bailing out");
2865 lex_close(parser->lex);
2871 parseerror(parser, "parse error");
2872 lex_close(parser->lex);
2877 lex_close(parser->lex);
2880 return !parser->errors;
2883 void parser_cleanup()
2886 for (i = 0; i < parser->functions_count; ++i) {
2887 ast_delete(parser->functions[i]);
2889 for (i = 0; i < parser->imm_vector_count; ++i) {
2890 ast_delete(parser->imm_vector[i]);
2892 for (i = 0; i < parser->imm_string_count; ++i) {
2893 ast_delete(parser->imm_string[i]);
2895 for (i = 0; i < parser->imm_float_count; ++i) {
2896 ast_delete(parser->imm_float[i]);
2898 for (i = 0; i < parser->fields_count; ++i) {
2899 ast_delete(parser->fields[i].var);
2900 mem_d(parser->fields[i].name);
2902 for (i = 0; i < parser->globals_count; ++i) {
2903 ast_delete(parser->globals[i].var);
2904 mem_d(parser->globals[i].name);
2906 MEM_VECTOR_CLEAR(parser, functions);
2907 MEM_VECTOR_CLEAR(parser, imm_vector);
2908 MEM_VECTOR_CLEAR(parser, imm_string);
2909 MEM_VECTOR_CLEAR(parser, imm_float);
2910 MEM_VECTOR_CLEAR(parser, globals);
2911 MEM_VECTOR_CLEAR(parser, fields);
2912 MEM_VECTOR_CLEAR(parser, locals);
2917 static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
2919 return util_crc16(old, str, strlen(str));
2922 static void progdefs_crc_file(const char *str)
2924 /* write to progdefs.h here */
2927 static uint16_t progdefs_crc_both(uint16_t old, const char *str)
2929 old = progdefs_crc_sum(old, str);
2930 progdefs_crc_file(str);
2934 static void generate_checksum(parser_t *parser)
2936 uint16_t crc = 0xFFFF;
2939 crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
2940 crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
2942 progdefs_crc_file("\tint\tpad;\n");
2943 progdefs_crc_file("\tint\tofs_return[3];\n");
2944 progdefs_crc_file("\tint\tofs_parm0[3];\n");
2945 progdefs_crc_file("\tint\tofs_parm1[3];\n");
2946 progdefs_crc_file("\tint\tofs_parm2[3];\n");
2947 progdefs_crc_file("\tint\tofs_parm3[3];\n");
2948 progdefs_crc_file("\tint\tofs_parm4[3];\n");
2949 progdefs_crc_file("\tint\tofs_parm5[3];\n");
2950 progdefs_crc_file("\tint\tofs_parm6[3];\n");
2951 progdefs_crc_file("\tint\tofs_parm7[3];\n");
2953 for (i = 0; i < parser->crc_globals; ++i) {
2954 if (!ast_istype(parser->globals[i].var, ast_value))
2956 switch (parser->globals[i].var->expression.vtype) {
2957 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
2958 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
2959 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
2960 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
2962 crc = progdefs_crc_both(crc, "\tint\t");
2965 crc = progdefs_crc_both(crc, parser->globals[i].name);
2966 crc = progdefs_crc_both(crc, ";\n");
2968 crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
2969 for (i = 0; i < parser->crc_fields; ++i) {
2970 if (!ast_istype(parser->fields[i].var, ast_value))
2972 switch (parser->fields[i].var->expression.next->expression.vtype) {
2973 case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
2974 case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
2975 case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
2976 case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
2978 crc = progdefs_crc_both(crc, "\tint\t");
2981 crc = progdefs_crc_both(crc, parser->fields[i].name);
2982 crc = progdefs_crc_both(crc, ";\n");
2984 crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
2989 bool parser_finish(const char *output)
2995 if (!parser->errors)
2997 ir = ir_builder_new("gmqcc_out");
2999 printf("failed to allocate builder\n");
3003 for (i = 0; i < parser->fields_count; ++i) {
3006 if (!ast_istype(parser->fields[i].var, ast_value))
3008 field = (ast_value*)parser->fields[i].var;
3009 isconst = field->isconst;
3010 field->isconst = false;
3011 if (!ast_global_codegen((ast_value*)field, ir, true)) {
3012 printf("failed to generate field %s\n", field->name);
3013 ir_builder_delete(ir);
3018 ast_expression *subtype;
3019 field->isconst = true;
3020 subtype = field->expression.next;
3021 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
3022 if (subtype->expression.vtype == TYPE_FIELD)
3023 ifld->fieldtype = subtype->expression.next->expression.vtype;
3024 else if (subtype->expression.vtype == TYPE_FUNCTION)
3025 ifld->outtype = subtype->expression.next->expression.vtype;
3026 (void)!ir_value_set_field(field->ir_v, ifld);
3029 for (i = 0; i < parser->globals_count; ++i) {
3031 if (!ast_istype(parser->globals[i].var, ast_value))
3033 asvalue = (ast_value*)(parser->globals[i].var);
3034 if (!asvalue->uses && !asvalue->isconst && asvalue->expression.vtype != TYPE_FUNCTION) {
3035 if (strcmp(asvalue->name, "end_sys_globals") &&
3036 strcmp(asvalue->name, "end_sys_fields"))
3038 retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
3039 "unused global: `%s`", asvalue->name);
3042 if (!ast_global_codegen(asvalue, ir, false)) {
3043 printf("failed to generate global %s\n", parser->globals[i].name);
3044 ir_builder_delete(ir);
3048 for (i = 0; i < parser->imm_float_count; ++i) {
3049 if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
3050 printf("failed to generate global %s\n", parser->imm_float[i]->name);
3051 ir_builder_delete(ir);
3055 for (i = 0; i < parser->imm_string_count; ++i) {
3056 if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
3057 printf("failed to generate global %s\n", parser->imm_string[i]->name);
3058 ir_builder_delete(ir);
3062 for (i = 0; i < parser->imm_vector_count; ++i) {
3063 if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
3064 printf("failed to generate global %s\n", parser->imm_vector[i]->name);
3065 ir_builder_delete(ir);
3069 for (i = 0; i < parser->functions_count; ++i) {
3070 if (!ast_function_codegen(parser->functions[i], ir)) {
3071 printf("failed to generate function %s\n", parser->functions[i]->name);
3072 ir_builder_delete(ir);
3075 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
3076 printf("failed to finalize function %s\n", parser->functions[i]->name);
3077 ir_builder_delete(ir);
3084 ir_builder_dump(ir, printf);
3086 generate_checksum(parser);
3088 if (!ir_builder_generate(ir, output)) {
3089 printf("*** failed to generate output file\n");
3090 ir_builder_delete(ir);
3095 ir_builder_delete(ir);
3099 printf("*** there were compile errors\n");