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;
26 ast_function *function;
27 MEM_VECTOR_MAKE(varentry_t, locals);
32 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
33 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
34 * anything else: type error
39 MEM_VEC_FUNCTIONS(parser_t, varentry_t, globals)
40 MEM_VEC_FUNCTIONS(parser_t, varentry_t, fields)
41 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_float)
42 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_string)
43 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_vector)
44 MEM_VEC_FUNCTIONS(parser_t, varentry_t, locals)
45 MEM_VEC_FUNCTIONS(parser_t, ast_function*, functions)
47 static void parser_pop_local(parser_t *parser);
48 static bool parser_variable(parser_t *parser, ast_block *localblock);
49 static ast_block* parser_parse_block(parser_t *parser);
50 static ast_expression* parser_parse_statement_or_block(parser_t *parser);
51 static ast_expression* parser_expression_leave(parser_t *parser, bool stopatcomma);
52 static ast_expression* parser_expression(parser_t *parser, bool stopatcomma);
54 void parseerror(parser_t *parser, const char *fmt, ...)
61 vprintmsg(LVL_ERROR, parser->lex->tok->ctx.file, parser->lex->tok->ctx.line, "parse error", fmt, ap);
65 /* returns true if it counts as an error */
66 bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
69 int lvl = LVL_WARNING;
71 if (!OPTS_WARN(warntype))
80 vprintmsg(lvl, parser->lex->tok->ctx.file, parser->lex->tok->ctx.line, "warning", fmt, ap);
86 /**********************************************************************
87 * some maths used for constant folding
90 vector vec3_add(vector a, vector b)
99 vector vec3_sub(vector a, vector b)
108 qcfloat vec3_mulvv(vector a, vector b)
110 return (a.x * b.x + a.y * b.y + a.z * b.z);
113 vector vec3_mulvf(vector a, float b)
122 /**********************************************************************
126 bool parser_next(parser_t *parser)
128 /* lex_do kills the previous token */
129 parser->tok = lex_do(parser->lex);
130 if (parser->tok == TOKEN_EOF || parser->tok >= TOKEN_ERROR)
135 /* lift a token out of the parser so it's not destroyed by parser_next */
136 token *parser_lift(parser_t *parser)
138 token *tok = parser->lex->tok;
139 parser->lex->tok = NULL;
143 #define parser_tokval(p) (p->lex->tok->value)
144 #define parser_token(p) (p->lex->tok)
145 #define parser_ctx(p) (p->lex->tok->ctx)
147 ast_value* parser_const_float(parser_t *parser, double d)
151 for (i = 0; i < parser->imm_float_count; ++i) {
152 if (parser->imm_float[i]->constval.vfloat == d)
153 return parser->imm_float[i];
155 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
157 out->constval.vfloat = d;
158 if (!parser_t_imm_float_add(parser, out)) {
159 ast_value_delete(out);
165 ast_value* parser_const_float_0(parser_t *parser)
167 if (!parser->imm_float_zero)
168 parser->imm_float_zero = parser_const_float(parser, 0);
169 return parser->imm_float_zero;
172 char *parser_strdup(const char *str)
175 /* actually dup empty strings */
176 char *out = mem_a(1);
180 return util_strdup(str);
183 ast_value* parser_const_string(parser_t *parser, const char *str)
187 for (i = 0; i < parser->imm_string_count; ++i) {
188 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
189 return parser->imm_string[i];
191 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
193 out->constval.vstring = parser_strdup(str);
194 if (!parser_t_imm_string_add(parser, out)) {
195 ast_value_delete(out);
201 ast_value* parser_const_vector(parser_t *parser, vector v)
205 for (i = 0; i < parser->imm_vector_count; ++i) {
206 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
207 return parser->imm_vector[i];
209 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
211 out->constval.vvec = v;
212 if (!parser_t_imm_vector_add(parser, out)) {
213 ast_value_delete(out);
219 ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
225 return parser_const_vector(parser, v);
228 ast_value* parser_const_vector_0(parser_t *parser)
230 if (!parser->imm_vector_zero)
231 parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
232 return parser->imm_vector_zero;
235 ast_expression* parser_find_field(parser_t *parser, const char *name)
238 for (i = 0; i < parser->fields_count; ++i) {
239 if (!strcmp(parser->fields[i].name, name))
240 return parser->fields[i].var;
245 ast_expression* parser_find_global(parser_t *parser, const char *name)
248 for (i = 0; i < parser->globals_count; ++i) {
249 if (!strcmp(parser->globals[i].name, name))
250 return parser->globals[i].var;
255 ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto)
259 for (i = parser->locals_count; i > upto;) {
261 if (!strcmp(parser->locals[i].name, name))
262 return parser->locals[i].var;
264 if (!parser->function)
266 fun = parser->function->vtype;
267 for (i = 0; i < fun->expression.params_count; ++i) {
268 if (!strcmp(fun->expression.params[i]->name, name))
269 return (ast_expression*)(fun->expression.params[i]);
274 ast_expression* parser_find_var(parser_t *parser, const char *name)
277 v = parser_find_local(parser, name, 0);
278 if (!v) v = parser_find_global(parser, name);
283 MEM_VECTOR_MAKE(ast_value*, p);
285 MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
287 static ast_value *parser_parse_type(parser_t *parser, int basetype, bool *isfunc)
291 lex_ctx ctx = parser_ctx(parser);
292 int vtype = basetype;
296 MEM_VECTOR_INIT(¶ms, p);
300 if (parser->tok == '(') {
305 bool isfield = false;
308 if (!parser_next(parser))
311 if (parser->tok == ')')
314 if (parser->tok == '.') {
316 if (!parser_next(parser)) {
317 parseerror(parser, "expected field parameter type");
322 temptype = parser_token(parser)->constval.t;
323 if (!parser_next(parser))
326 param = parser_parse_type(parser, temptype, &dummy);
332 if (parser->tok == TOKEN_IDENT) {
333 /* named parameter */
334 if (!ast_value_set_name(param, parser_tokval(parser)))
336 if (!parser_next(parser))
341 fld = ast_value_new(ctx, param->name, TYPE_FIELD);
342 fld->expression.next = (ast_expression*)param;
346 if (!paramlist_t_p_add(¶ms, param)) {
347 parseerror(parser, "Out of memory while parsing typename");
351 if (parser->tok == ',')
353 if (parser->tok == ')')
355 parseerror(parser, "Unexpected token");
358 if (!parser_next(parser))
362 var = ast_value_new(ctx, "<unnamed>", vtype);
365 MEM_VECTOR_MOVE(¶ms, p, &var->expression, params);
368 for (i = 0; i < params.p_count; ++i)
369 ast_value_delete(params.p[i]);
370 MEM_VECTOR_CLEAR(¶ms, p);
376 size_t etype; /* 0 = expression, others are operators */
380 ast_block *block; /* for commas and function calls */
385 MEM_VECTOR_MAKE(sy_elem, out);
386 MEM_VECTOR_MAKE(sy_elem, ops);
388 MEM_VEC_FUNCTIONS(shunt, sy_elem, out)
389 MEM_VEC_FUNCTIONS(shunt, sy_elem, ops)
391 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
401 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
404 e.out = (ast_expression*)v;
411 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
413 e.etype = 1 + (op - operators);
421 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
433 # define DEBUGSHUNTDO(x) x
435 # define DEBUGSHUNTDO(x)
438 static bool parser_sy_pop(parser_t *parser, shunt *sy)
442 ast_expression *out = NULL;
443 ast_expression *exprs[3];
444 ast_block *blocks[3];
445 ast_value *asvalue[3];
447 qcint generated_op = 0;
449 if (!sy->ops_count) {
450 parseerror(parser, "internal error: missing operator");
454 if (sy->ops[sy->ops_count-1].paren) {
455 parseerror(parser, "unmatched parenthesis");
459 op = &operators[sy->ops[sy->ops_count-1].etype - 1];
460 ctx = sy->ops[sy->ops_count-1].ctx;
462 DEBUGSHUNTDO(printf("apply %s\n", op->op));
464 if (sy->out_count < op->operands) {
465 parseerror(parser, "internal error: not enough operands: %i (operator %s (%i))", sy->out_count,
466 op->op, (int)op->id);
472 sy->out_count -= op->operands;
473 for (i = 0; i < op->operands; ++i) {
474 exprs[i] = sy->out[sy->out_count+i].out;
475 blocks[i] = sy->out[sy->out_count+i].block;
476 asvalue[i] = (ast_value*)exprs[i];
479 if (blocks[0] && !blocks[0]->exprs_count && op->id != opid1(',')) {
480 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
484 #define NotSameType(T) \
485 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
486 exprs[0]->expression.vtype != T)
487 #define CanConstFold1(A) \
488 (ast_istype((A), ast_value) && ((ast_value*)(A))->isconst)
489 #define CanConstFold(A, B) \
490 (CanConstFold1(A) && CanConstFold1(B))
491 #define ConstV(i) (asvalue[(i)]->constval.vvec)
492 #define ConstF(i) (asvalue[(i)]->constval.vfloat)
493 #define ConstS(i) (asvalue[(i)]->constval.vstring)
497 parseerror(parser, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
501 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
502 if (exprs[1]->expression.vtype != TYPE_FIELD) {
503 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
506 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
508 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
509 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
513 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
520 if (!ast_block_exprs_add(blocks[0], exprs[1]))
523 blocks[0] = ast_block_new(ctx);
524 if (!ast_block_exprs_add(blocks[0], exprs[0]) ||
525 !ast_block_exprs_add(blocks[0], exprs[1]))
530 if (!ast_block_set_type(blocks[0], exprs[1]))
533 sy->out[sy->out_count++] = syblock(ctx, blocks[0]);
537 switch (exprs[0]->expression.vtype) {
539 if (CanConstFold1(exprs[0]))
540 out = (ast_expression*)parser_const_float(parser, -ConstF(0));
542 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
543 (ast_expression*)parser_const_float_0(parser),
547 if (CanConstFold1(exprs[0]))
548 out = (ast_expression*)parser_const_vector_f(parser,
549 -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
551 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
552 (ast_expression*)parser_const_vector_0(parser),
556 parseerror(parser, "invalid types used in expression: cannot negate type %s",
557 type_name[exprs[0]->expression.vtype]);
563 switch (exprs[0]->expression.vtype) {
565 if (CanConstFold1(exprs[0]))
566 out = (ast_expression*)parser_const_float(parser, !ConstF(0));
568 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
571 if (CanConstFold1(exprs[0]))
572 out = (ast_expression*)parser_const_float(parser,
573 (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
575 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
578 if (CanConstFold1(exprs[0]))
579 out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
581 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
583 /* we don't constant-fold NOT for these types */
585 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
588 out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
591 parseerror(parser, "invalid types used in expression: cannot logically negate type %s",
592 type_name[exprs[0]->expression.vtype]);
598 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
599 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
601 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
602 type_name[exprs[0]->expression.vtype],
603 type_name[exprs[1]->expression.vtype]);
606 switch (exprs[0]->expression.vtype) {
608 if (CanConstFold(exprs[0], exprs[1]))
610 out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
613 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
616 if (CanConstFold(exprs[0], exprs[1]))
617 out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
619 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
622 parseerror(parser, "invalid types used in expression: cannot add type %s and %s",
623 type_name[exprs[0]->expression.vtype],
624 type_name[exprs[1]->expression.vtype]);
629 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
630 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
632 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
633 type_name[exprs[1]->expression.vtype],
634 type_name[exprs[0]->expression.vtype]);
637 switch (exprs[0]->expression.vtype) {
639 if (CanConstFold(exprs[0], exprs[1]))
640 out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
642 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
645 if (CanConstFold(exprs[0], exprs[1]))
646 out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
648 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
651 parseerror(parser, "invalid types used in expression: cannot subtract type %s from %s",
652 type_name[exprs[1]->expression.vtype],
653 type_name[exprs[0]->expression.vtype]);
658 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
659 exprs[0]->expression.vtype != TYPE_VECTOR &&
660 exprs[0]->expression.vtype != TYPE_FLOAT &&
661 exprs[1]->expression.vtype != TYPE_VECTOR &&
662 exprs[1]->expression.vtype != TYPE_FLOAT)
664 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
665 type_name[exprs[1]->expression.vtype],
666 type_name[exprs[0]->expression.vtype]);
669 switch (exprs[0]->expression.vtype) {
671 if (exprs[1]->expression.vtype == TYPE_VECTOR)
673 if (CanConstFold(exprs[0], exprs[1]))
674 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
676 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
680 if (CanConstFold(exprs[0], exprs[1]))
681 out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
683 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
687 if (exprs[1]->expression.vtype == TYPE_FLOAT)
689 if (CanConstFold(exprs[0], exprs[1]))
690 out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
692 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
696 if (CanConstFold(exprs[0], exprs[1]))
697 out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
699 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
703 parseerror(parser, "invalid types used in expression: cannot multiply types %s and %s",
704 type_name[exprs[1]->expression.vtype],
705 type_name[exprs[0]->expression.vtype]);
710 if (NotSameType(TYPE_FLOAT)) {
711 parseerror(parser, "invalid types used in expression: cannot divide types %s and %s",
712 type_name[exprs[0]->expression.vtype],
713 type_name[exprs[1]->expression.vtype]);
716 if (CanConstFold(exprs[0], exprs[1]))
717 out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
719 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
723 parseerror(parser, "qc does not have a modulo operator");
727 if (NotSameType(TYPE_FLOAT)) {
728 parseerror(parser, "invalid types used in expression: cannot perform bit operations between types %s and %s",
729 type_name[exprs[0]->expression.vtype],
730 type_name[exprs[1]->expression.vtype]);
733 if (CanConstFold(exprs[0], exprs[1]))
734 out = (ast_expression*)parser_const_float(parser,
735 (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
736 (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
738 out = (ast_expression*)ast_binary_new(ctx,
739 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
743 parseerror(parser, "TODO: bitxor");
748 case opid3('<','<','='):
749 case opid3('>','>','='):
750 parseerror(parser, "TODO: shifts");
754 generated_op += 1; /* INSTR_OR */
756 generated_op += INSTR_AND;
757 if (NotSameType(TYPE_FLOAT)) {
758 parseerror(parser, "invalid types used in expression: cannot perform logical operations between types %s and %s",
759 type_name[exprs[0]->expression.vtype],
760 type_name[exprs[1]->expression.vtype]);
761 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
762 parseerror(parser, "TODO: optional early out");
765 if (opts_standard == COMPILER_GMQCC)
766 printf("TODO: early out logic\n");
767 if (CanConstFold(exprs[0], exprs[1]))
768 out = (ast_expression*)parser_const_float(parser,
769 (generated_op == INSTR_OR ? (ConstF(0) || ConstF(1)) : (ConstF(0) && ConstF(1))));
771 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
775 generated_op += 1; /* INSTR_GT */
777 generated_op += 1; /* INSTR_LT */
778 case opid2('>', '='):
779 generated_op += 1; /* INSTR_GE */
780 case opid2('<', '='):
781 generated_op += INSTR_LE;
782 if (NotSameType(TYPE_FLOAT)) {
783 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
784 type_name[exprs[0]->expression.vtype],
785 type_name[exprs[1]->expression.vtype]);
788 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
790 case opid2('!', '='):
791 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
792 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
793 type_name[exprs[0]->expression.vtype],
794 type_name[exprs[1]->expression.vtype]);
797 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
799 case opid2('=', '='):
800 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
801 parseerror(parser, "invalid types used in expression: cannot perform comparison between types %s and %s",
802 type_name[exprs[0]->expression.vtype],
803 type_name[exprs[1]->expression.vtype]);
806 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
810 if (ast_istype(exprs[0], ast_entfield))
811 assignop = type_storep_instr[exprs[0]->expression.vtype];
813 assignop = type_store_instr[exprs[0]->expression.vtype];
814 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
818 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
819 (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) )
821 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
822 type_name[exprs[0]->expression.vtype],
823 type_name[exprs[1]->expression.vtype]);
826 if (ast_istype(exprs[0], ast_entfield))
827 assignop = type_storep_instr[exprs[0]->expression.vtype];
829 assignop = type_store_instr[exprs[0]->expression.vtype];
830 switch (exprs[0]->expression.vtype) {
832 out = (ast_expression*)ast_binstore_new(ctx, assignop,
833 (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
837 out = (ast_expression*)ast_binstore_new(ctx, assignop,
838 (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
842 parseerror(parser, "invalid types used in expression: cannot add or subtract type %s and %s",
843 type_name[exprs[0]->expression.vtype],
844 type_name[exprs[1]->expression.vtype]);
852 parseerror(parser, "failed to apply operand %s", op->op);
856 DEBUGSHUNTDO(printf("applied %s\n", op->op));
857 sy->out[sy->out_count++] = syexp(ctx, out);
861 static bool parser_close_call(parser_t *parser, shunt *sy)
863 /* was a function call */
871 fid = sy->ops[sy->ops_count].off;
873 /* out[fid] is the function
874 * everything above is parameters...
876 * 1 params = ast_expression
880 if (sy->out_count < 1 || sy->out_count <= fid) {
881 parseerror(parser, "internal error: function call needs function and parameter list...");
885 fun = sy->out[fid].out;
887 call = ast_call_new(sy->ops[sy->ops_count].ctx, fun);
889 parseerror(parser, "out of memory");
893 if (fid+1 == sy->out_count) {
896 } else if (fid+2 == sy->out_count) {
899 params = sy->out[sy->out_count].block;
903 if (!ast_call_params_add(call, sy->out[sy->out_count].out)) {
904 ast_delete(sy->out[sy->out_count].out);
905 parseerror(parser, "out of memory");
909 paramcount = params->exprs_count;
910 MEM_VECTOR_MOVE(params, exprs, call, params);
914 parseerror(parser, "invalid function call");
918 /* overwrite fid, the function, with a call */
919 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
921 if (fun->expression.vtype != TYPE_FUNCTION) {
922 parseerror(parser, "not a function (%s)", type_name[fun->expression.vtype]);
926 if (!fun->expression.next) {
927 parseerror(parser, "could not determine function return type");
930 if (fun->expression.params_count != paramcount) {
931 parseerror(parser, "expected %i parameters, got %i", (int)fun->expression.params_count, paramcount);
939 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
941 if (!sy->ops_count) {
942 parseerror(parser, "unmatched closing paren");
945 if (sy->ops[sy->ops_count-1].paren == 1) {
946 parseerror(parser, "empty parenthesis expression");
949 while (sy->ops_count) {
950 if (sy->ops[sy->ops_count-1].paren == 'f') {
951 if (!parser_close_call(parser, sy))
955 if (sy->ops[sy->ops_count-1].paren == 1) {
957 return !functions_only;
959 if (!parser_sy_pop(parser, sy))
965 static void parser_reclassify_token(parser_t *parser)
968 for (i = 0; i < operator_count; ++i) {
969 if (!strcmp(parser_tokval(parser), operators[i].op)) {
970 parser->tok = TOKEN_OPERATOR;
976 static ast_expression* parser_expression_leave(parser_t *parser, bool stopatcomma)
978 ast_expression *expr = NULL;
981 bool gotmemberof = false;
983 /* count the parens because an if starts with one, so the
984 * end of a condition is an unmatched closing paren
988 MEM_VECTOR_INIT(&sy, out);
989 MEM_VECTOR_INIT(&sy, ops);
991 parser->lex->flags.noops = false;
993 parser_reclassify_token(parser);
1000 parser->memberof = 0;
1002 if (parser->tok == TOKEN_IDENT)
1004 ast_expression *var;
1006 parseerror(parser, "expected operator or end of statement");
1011 if (opts_standard == COMPILER_GMQCC)
1013 if (parser->memberof == TYPE_ENTITY) {
1014 /* still get vars first since there could be a fieldpointer */
1015 var = parser_find_var(parser, parser_tokval(parser));
1017 var = parser_find_field(parser, parser_tokval(parser));
1019 else if (parser->memberof == TYPE_VECTOR)
1021 parseerror(parser, "TODO: implement effective vector member access");
1024 else if (parser->memberof) {
1025 parseerror(parser, "namespace for member not found");
1029 var = parser_find_var(parser, parser_tokval(parser));
1031 var = parser_find_var(parser, parser_tokval(parser));
1033 var = parser_find_field(parser, parser_tokval(parser));
1036 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1039 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), var))) {
1040 parseerror(parser, "out of memory");
1043 DEBUGSHUNTDO(printf("push %s\n", parser_tokval(parser)));
1045 else if (parser->tok == TOKEN_FLOATCONST) {
1048 parseerror(parser, "expected operator or end of statement, got constant");
1052 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1055 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1056 parseerror(parser, "out of memory");
1059 DEBUGSHUNTDO(printf("push %g\n", parser_token(parser)->constval.f));
1061 else if (parser->tok == TOKEN_INTCONST) {
1064 parseerror(parser, "expected operator or end of statement, got constant");
1068 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1071 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1072 parseerror(parser, "out of memory");
1075 DEBUGSHUNTDO(printf("push %i\n", parser_token(parser)->constval.i));
1077 else if (parser->tok == TOKEN_STRINGCONST) {
1080 parseerror(parser, "expected operator or end of statement, got constant");
1084 val = parser_const_string(parser, parser_tokval(parser));
1087 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1088 parseerror(parser, "out of memory");
1091 DEBUGSHUNTDO(printf("push string\n"));
1093 else if (parser->tok == TOKEN_VECTORCONST) {
1096 parseerror(parser, "expected operator or end of statement, got constant");
1100 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1103 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1104 parseerror(parser, "out of memory");
1107 DEBUGSHUNTDO(printf("push '%g %g %g'\n",
1108 parser_token(parser)->constval.v.x,
1109 parser_token(parser)->constval.v.y,
1110 parser_token(parser)->constval.v.z));
1112 else if (parser->tok == '(') {
1114 DEBUGSHUNTDO(printf("push (\n"));
1116 /* we expected an operator, this is the function-call operator */
1117 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f', sy.out_count-1))) {
1118 parseerror(parser, "out of memory");
1123 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1, 0))) {
1124 parseerror(parser, "out of memory");
1127 DEBUGSHUNTDO(printf("push (\n"));
1131 else if (parser->tok == ')') {
1133 DEBUGSHUNTDO(printf("do[op] )\n"));
1137 /* we do expect an operator next */
1138 /* closing an opening paren */
1139 if (!parser_close_paren(parser, &sy, false))
1142 DEBUGSHUNTDO(printf("do[nop] )\n"));
1146 /* allowed for function calls */
1147 if (!parser_close_paren(parser, &sy, true))
1152 else if (parser->tok != TOKEN_OPERATOR) {
1154 parseerror(parser, "expected operator or end of statement");
1161 /* classify the operator */
1162 /* TODO: suffix operators */
1163 const oper_info *op;
1164 const oper_info *olast = NULL;
1166 for (o = 0; o < operator_count; ++o) {
1167 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1168 !(operators[o].flags & OP_SUFFIX) && /* remove this */
1169 !strcmp(parser_tokval(parser), operators[o].op))
1175 if (o == operator_count) {
1176 /* no operator found... must be the end of the statement */
1179 /* found an operator */
1182 /* when declaring variables, a comma starts a new variable */
1183 if (op->id == opid1(',') && !parens && stopatcomma)
1186 if (op->id == opid1('.')) {
1187 /* for gmqcc standard: open up the namespace of the previous type */
1188 ast_expression *prevex = sy.out[sy.out_count-1].out;
1190 parseerror(parser, "unexpected member operator");
1193 if (prevex->expression.vtype == TYPE_ENTITY)
1194 parser->memberof = TYPE_ENTITY;
1195 else if (prevex->expression.vtype == TYPE_VECTOR)
1196 parser->memberof = TYPE_VECTOR;
1198 parseerror(parser, "type error: type has no members");
1204 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
1205 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
1208 (op->prec < olast->prec) ||
1209 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1211 if (!parser_sy_pop(parser, &sy))
1213 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
1214 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
1219 DEBUGSHUNTDO(printf("push operator %s\n", op->op));
1220 if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
1223 if (!parser_next(parser)) {
1226 if (parser->tok == ';') {
1231 while (sy.ops_count) {
1232 if (!parser_sy_pop(parser, &sy))
1236 parser->lex->flags.noops = true;
1237 if (!sy.out_count) {
1238 parseerror(parser, "empty expression");
1241 expr = sy.out[0].out;
1242 MEM_VECTOR_CLEAR(&sy, out);
1243 MEM_VECTOR_CLEAR(&sy, ops);
1244 DEBUGSHUNTDO(printf("shunt done\n"));
1248 parser->lex->flags.noops = true;
1249 MEM_VECTOR_CLEAR(&sy, out);
1250 MEM_VECTOR_CLEAR(&sy, ops);
1254 static ast_expression* parser_expression(parser_t *parser, bool stopatcomma)
1256 ast_expression *e = parser_expression_leave(parser, stopatcomma);
1259 if (!parser_next(parser)) {
1266 static bool parser_parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1269 ast_expression *cond, *ontrue, *onfalse = NULL;
1271 lex_ctx ctx = parser_ctx(parser);
1273 /* skip the 'if' and check for opening paren */
1274 if (!parser_next(parser) || parser->tok != '(') {
1275 parseerror(parser, "expected 'if' condition in parenthesis");
1278 /* parse into the expression */
1279 if (!parser_next(parser)) {
1280 parseerror(parser, "expected 'if' condition after opening paren");
1283 /* parse the condition */
1284 cond = parser_expression_leave(parser, false);
1288 if (parser->tok != ')') {
1289 parseerror(parser, "expected closing paren after 'if' condition");
1293 /* parse into the 'then' branch */
1294 if (!parser_next(parser)) {
1295 parseerror(parser, "expected statement for on-true branch of 'if'");
1299 ontrue = parser_parse_statement_or_block(parser);
1304 /* check for an else */
1305 if (!strcmp(parser_tokval(parser), "else")) {
1306 /* parse into the 'else' branch */
1307 if (!parser_next(parser)) {
1308 parseerror(parser, "expected on-false branch after 'else'");
1313 onfalse = parser_parse_statement_or_block(parser);
1321 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1322 *out = (ast_expression*)ifthen;
1326 static bool parser_parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1329 ast_expression *cond, *ontrue;
1331 lex_ctx ctx = parser_ctx(parser);
1333 /* skip the 'while' and check for opening paren */
1334 if (!parser_next(parser) || parser->tok != '(') {
1335 parseerror(parser, "expected 'while' condition in parenthesis");
1338 /* parse into the expression */
1339 if (!parser_next(parser)) {
1340 parseerror(parser, "expected 'while' condition after opening paren");
1343 /* parse the condition */
1344 cond = parser_expression_leave(parser, false);
1348 if (parser->tok != ')') {
1349 parseerror(parser, "expected closing paren after 'while' condition");
1353 /* parse into the 'then' branch */
1354 if (!parser_next(parser)) {
1355 parseerror(parser, "expected while-loop body");
1359 ontrue = parser_parse_statement_or_block(parser);
1365 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1366 *out = (ast_expression*)aloop;
1370 static bool parser_parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1373 ast_expression *cond, *ontrue;
1375 lex_ctx ctx = parser_ctx(parser);
1377 /* skip the 'do' and get the body */
1378 if (!parser_next(parser)) {
1379 parseerror(parser, "expected loop body");
1382 ontrue = parser_parse_statement_or_block(parser);
1386 /* expect the "while" */
1387 if (parser->tok != TOKEN_KEYWORD ||
1388 strcmp(parser_tokval(parser), "while"))
1390 parseerror(parser, "expected 'while' and condition");
1395 /* skip the 'while' and check for opening paren */
1396 if (!parser_next(parser) || parser->tok != '(') {
1397 parseerror(parser, "expected 'while' condition in parenthesis");
1401 /* parse into the expression */
1402 if (!parser_next(parser)) {
1403 parseerror(parser, "expected 'while' condition after opening paren");
1407 /* parse the condition */
1408 cond = parser_expression_leave(parser, false);
1412 if (parser->tok != ')') {
1413 parseerror(parser, "expected closing paren after 'while' condition");
1419 if (!parser_next(parser) || parser->tok != ';') {
1420 parseerror(parser, "expected semicolon after condition");
1426 if (!parser_next(parser)) {
1427 parseerror(parser, "parse error");
1433 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1434 *out = (ast_expression*)aloop;
1438 static bool parser_parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1441 ast_expression *initexpr, *cond, *increment, *ontrue;
1442 size_t oldblocklocal;
1444 lex_ctx ctx = parser_ctx(parser);
1446 oldblocklocal = parser->blocklocal;
1447 parser->blocklocal = parser->locals_count;
1454 /* skip the 'while' and check for opening paren */
1455 if (!parser_next(parser) || parser->tok != '(') {
1456 parseerror(parser, "expected 'for' expressions in parenthesis");
1459 /* parse into the expression */
1460 if (!parser_next(parser)) {
1461 parseerror(parser, "expected 'for' initializer after opening paren");
1465 if (parser->tok == TOKEN_TYPENAME) {
1466 if (opts_standard != COMPILER_GMQCC) {
1467 if (parsewarning(parser, WARN_EXTENSIONS,
1468 "current standard does not allow variable declarations in for-loop initializers"))
1472 parseerror(parser, "TODO: assignment of new variables to be non-const");
1474 if (!parser_variable(parser, block))
1477 else if (parser->tok != ';')
1479 initexpr = parser_expression_leave(parser, false);
1484 /* move on to condition */
1485 if (parser->tok != ';') {
1486 parseerror(parser, "expected semicolon after for-loop initializer");
1489 if (!parser_next(parser)) {
1490 parseerror(parser, "expected for-loop condition");
1494 /* parse the condition */
1495 if (parser->tok != ';') {
1496 cond = parser_expression_leave(parser, false);
1501 /* move on to incrementor */
1502 if (parser->tok != ';') {
1503 parseerror(parser, "expected semicolon after for-loop initializer");
1506 if (!parser_next(parser)) {
1507 parseerror(parser, "expected for-loop condition");
1511 /* parse the incrementor */
1512 if (parser->tok != ')') {
1513 increment = parser_expression_leave(parser, false);
1519 if (parser->tok != ')') {
1520 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1523 /* parse into the 'then' branch */
1524 if (!parser_next(parser)) {
1525 parseerror(parser, "expected for-loop body");
1528 ontrue = parser_parse_statement_or_block(parser);
1533 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1534 *out = (ast_expression*)aloop;
1536 while (parser->locals_count > parser->blocklocal)
1537 parser_pop_local(parser);
1538 parser->blocklocal = oldblocklocal;
1541 if (initexpr) ast_delete(initexpr);
1542 if (cond) ast_delete(cond);
1543 if (increment) ast_delete(increment);
1544 while (parser->locals_count > parser->blocklocal)
1545 parser_pop_local(parser);
1546 parser->blocklocal = oldblocklocal;
1550 static bool parser_parse_statement(parser_t *parser, ast_block *block, ast_expression **out)
1552 if (parser->tok == TOKEN_TYPENAME)
1554 /* local variable */
1556 parseerror(parser, "cannot declare a variable from here");
1559 if (opts_standard == COMPILER_QCC) {
1560 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
1563 if (!parser_variable(parser, block))
1568 else if (parser->tok == TOKEN_KEYWORD)
1570 if (!strcmp(parser_tokval(parser), "local"))
1573 parseerror(parser, "cannot declare a local variable here");
1576 if (!parser_next(parser)) {
1577 parseerror(parser, "expected variable declaration");
1580 if (!parser_variable(parser, block))
1585 else if (!strcmp(parser_tokval(parser), "return"))
1587 ast_expression *exp = NULL;
1588 ast_return *ret = NULL;
1589 ast_value *expected = parser->function->vtype;
1591 if (!parser_next(parser)) {
1592 parseerror(parser, "expected return expression");
1596 if (parser->tok != ';') {
1597 exp = parser_expression(parser, false);
1601 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
1602 parseerror(parser, "return with invalid expression");
1605 ret = ast_return_new(exp->expression.node.context, exp);
1611 *out = (ast_expression*)ret;
1612 } else if (!parser_next(parser)) {
1613 parseerror(parser, "expected semicolon");
1614 if (expected->expression.next->expression.vtype != TYPE_VOID) {
1615 parseerror(parser, "return without value");
1620 else if (!strcmp(parser_tokval(parser), "if"))
1622 return parser_parse_if(parser, block, out);
1624 else if (!strcmp(parser_tokval(parser), "while"))
1626 return parser_parse_while(parser, block, out);
1628 else if (!strcmp(parser_tokval(parser), "do"))
1630 return parser_parse_dowhile(parser, block, out);
1632 else if (!strcmp(parser_tokval(parser), "for"))
1634 if (opts_standard == COMPILER_QCC) {
1635 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
1638 return parser_parse_for(parser, block, out);
1640 parseerror(parser, "Unexpected keyword");
1643 else if (parser->tok == '{')
1646 inner = parser_parse_block(parser);
1649 *out = (ast_expression*)inner;
1654 ast_expression *exp = parser_expression(parser, false);
1662 static void parser_pop_local(parser_t *parser)
1664 parser->locals_count--;
1665 mem_d(parser->locals[parser->locals_count].name);
1668 static ast_block* parser_parse_block(parser_t *parser)
1670 size_t oldblocklocal;
1671 ast_block *block = NULL;
1673 oldblocklocal = parser->blocklocal;
1674 parser->blocklocal = parser->locals_count;
1676 if (!parser_next(parser)) { /* skip the '{' */
1677 parseerror(parser, "expected function body");
1681 block = ast_block_new(parser_ctx(parser));
1683 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
1685 ast_expression *expr;
1686 if (parser->tok == '}')
1689 if (!parser_parse_statement(parser, block, &expr)) {
1690 ast_block_delete(block);
1696 if (!ast_block_exprs_add(block, expr)) {
1698 ast_block_delete(block);
1704 if (parser->tok != '}') {
1705 ast_block_delete(block);
1708 (void)parser_next(parser);
1712 while (parser->locals_count > parser->blocklocal)
1713 parser_pop_local(parser);
1714 parser->blocklocal = oldblocklocal;
1715 /* unroll the local vector */
1719 static ast_expression* parser_parse_statement_or_block(parser_t *parser)
1721 ast_expression *expr;
1722 if (parser->tok == '{')
1723 return (ast_expression*)parser_parse_block(parser);
1724 if (!parser_parse_statement(parser, NULL, &expr))
1729 static bool parser_variable(parser_t *parser, ast_block *localblock)
1731 bool isfunc = false;
1732 ast_function *func = NULL;
1736 ast_expression *olddecl;
1738 int basetype = parser_token(parser)->constval.t;
1742 if (!parser_next(parser)) { /* skip basetype or comma */
1743 parseerror(parser, "expected variable declaration");
1750 ctx = parser_ctx(parser);
1751 var = parser_parse_type(parser, basetype, &isfunc);
1756 if (parser->tok != TOKEN_IDENT) {
1757 parseerror(parser, "expected variable name\n");
1762 if (!localblock && (olddecl = parser_find_global(parser, parser_tokval(parser)))) {
1763 ast_value_delete(var);
1764 parseerror(parser, "global %s already declared here: %s:%i\n",
1765 parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
1769 if (localblock && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
1770 ast_value_delete(var);
1771 parseerror(parser, "local %s already declared here: %s:%i\n",
1772 parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
1777 if (!ast_value_set_name(var, parser_tokval(parser))) {
1778 parseerror(parser, "failed to set variable name\n");
1779 ast_value_delete(var);
1784 /* a function was defined */
1786 ast_value *proto = NULL;
1789 olddecl = parser_find_global(parser, parser_tokval(parser));
1791 olddecl = parser_find_local(parser, parser_tokval(parser), parser->blocklocal);
1794 /* we had a prototype */
1795 if (!ast_istype(olddecl, ast_value)) {
1796 /* theoretically not possible you think?
1802 parseerror(parser, "cannot declare a function with the same name as a vector's member: %s",
1803 parser_tokval(parser));
1804 ast_value_delete(var);
1808 proto = (ast_value*)olddecl;
1811 /* turn var into a value of TYPE_FUNCTION, with the old var
1814 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
1815 func = ast_function_new(ctx, var->name, fval);
1816 if (!fval || !func) {
1817 ast_value_delete(var);
1818 if (fval) ast_value_delete(fval);
1819 if (func) ast_function_delete(func);
1823 fval->expression.next = (ast_expression*)var;
1824 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
1826 /* we compare the type late here, but it's easier than
1827 * messing with the parameter-vector etc. earlier
1830 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)fval)) {
1831 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
1833 ast_ctx(proto).file, ast_ctx(proto).line);
1834 ast_function_delete(func);
1835 ast_value_delete(fval);
1838 ast_function_delete(func);
1839 ast_value_delete(fval);
1841 func = var->constval.vfunc;
1845 if (!parser_t_functions_add(parser, func)) {
1846 ast_function_delete(func);
1847 ast_value_delete(fval);
1855 varent.name = util_strdup(var->name);
1856 varent.var = (ast_expression*)var;
1857 if (var->expression.vtype == TYPE_VECTOR)
1859 size_t len = strlen(varent.name);
1860 varentry_t vx, vy, vz;
1861 vx.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 0);
1862 vy.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 1);
1863 vz.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 2);
1864 vx.name = (char*)mem_a(len+3);
1865 vy.name = (char*)mem_a(len+3);
1866 vz.name = (char*)mem_a(len+3);
1867 memcpy(vx.name, varent.name, len);
1868 memcpy(vy.name, varent.name, len);
1869 memcpy(vz.name, varent.name, len);
1870 vx.name[len] = vy.name[len] = vz.name[len] = '_';
1871 vx.name[len+1] = 'x';
1872 vy.name[len+1] = 'y';
1873 vz.name[len+1] = 'z';
1874 vx.name[len+2] = vy.name[len+2] = vz.name[len+2] = 0;
1877 (void)!parser_t_globals_add(parser, varent);
1878 (void)!parser_t_globals_add(parser, vx);
1879 (void)!parser_t_globals_add(parser, vy);
1880 (void)!parser_t_globals_add(parser, vz);
1882 (void)!parser_t_locals_add(parser, varent);
1883 (void)!parser_t_locals_add(parser, vx);
1884 (void)!parser_t_locals_add(parser, vy);
1885 (void)!parser_t_locals_add(parser, vz);
1890 if ( (!localblock && !parser_t_globals_add(parser, varent)) ||
1891 ( localblock && !parser_t_locals_add(parser, varent)) )
1893 ast_value_delete(var);
1897 if (localblock && !ast_block_locals_add(localblock, var))
1899 parser_pop_local(parser);
1900 ast_value_delete(var);
1904 if (!parser_next(parser)) {
1905 ast_value_delete(var);
1909 if (parser->tok == ';') {
1910 if (!parser_next(parser))
1911 return parser->tok == TOKEN_EOF;
1915 if (parser->tok == ',') {
1920 if (parser->tok != '=') {
1921 parseerror(parser, "expected '=' or ';'");
1925 if (!parser_next(parser))
1928 if (parser->tok == '#') {
1930 parseerror(parser, "cannot declare builtins within functions");
1933 if (!isfunc || !func) {
1934 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
1937 if (!parser_next(parser)) {
1938 parseerror(parser, "expected builtin number");
1941 if (parser->tok != TOKEN_INTCONST) {
1942 parseerror(parser, "builtin number must be an integer constant");
1945 if (parser_token(parser)->constval.i <= 0) {
1946 parseerror(parser, "builtin number must be positive integer greater than zero");
1950 func->builtin = -parser_token(parser)->constval.i;
1952 if (!parser_next(parser))
1954 } else if (parser->tok == '{') {
1957 ast_function *old = parser->function;
1960 parseerror(parser, "cannot declare functions within functions");
1964 parser->function = func;
1965 block = parser_parse_block(parser);
1966 parser->function = old;
1971 if (!ast_function_blocks_add(func, block)) {
1972 ast_block_delete(block);
1976 if (parser->tok == ';')
1977 return parser_next(parser) || parser->tok == TOKEN_EOF;
1978 else if (opts_standard == COMPILER_QCC)
1979 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
1982 ast_expression *cexp;
1985 cexp = parser_expression_leave(parser, true);
1986 cval = (ast_value*)cexp;
1987 if (!ast_istype(cval, ast_value) || !cval->isconst)
1988 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
1991 var->isconst = true;
1992 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
1993 memset(&cval->constval, 0, sizeof(cval->constval));
1998 if (parser->tok == ',') {
2003 if (parser->tok != ';') {
2004 parseerror(parser, "missing semicolon");
2008 (void)parser_next(parser);
2014 static bool parser_do(parser_t *parser)
2016 if (parser->tok == TOKEN_TYPENAME)
2018 return parser_variable(parser, NULL);
2020 else if (parser->tok == TOKEN_KEYWORD)
2022 /* handle 'var' and 'const' */
2025 else if (parser->tok == '.')
2029 ast_expression *oldex;
2030 bool isfunc = false;
2032 lex_ctx ctx = parser_ctx(parser);
2035 /* entity-member declaration */
2036 if (!parser_next(parser) || parser->tok != TOKEN_TYPENAME) {
2037 parseerror(parser, "expected member variable definition");
2041 /* remember the base/return type */
2042 basetype = parser_token(parser)->constval.t;
2044 /* parse into the declaration */
2045 if (!parser_next(parser)) {
2046 parseerror(parser, "expected field def");
2050 /* parse the field type fully */
2051 var = parser_parse_type(parser, basetype, &isfunc);
2056 /* now the field name */
2057 if (parser->tok != TOKEN_IDENT) {
2058 parseerror(parser, "expected field name");
2063 /* check for an existing field
2064 * in original qc we also have to check for an existing
2065 * global named like the field
2067 if (opts_standard == COMPILER_QCC) {
2068 if (parser_find_global(parser, parser_tokval(parser))) {
2069 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
2077 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
2079 ast_value_delete(var);
2082 fval->expression.next = (ast_expression*)var;
2083 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
2087 /* turn it into a field */
2088 fld = ast_value_new(ctx, parser_tokval(parser), TYPE_FIELD);
2089 fld->expression.next = (ast_expression*)var;
2091 if ( (oldex = parser_find_field(parser, parser_tokval(parser)))) {
2092 if (ast_istype(oldex, ast_member)) {
2093 parseerror(parser, "cannot declare a field with the same name as a vector component, component %s has been declared here: %s:%i",
2094 parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line);
2098 if (!ast_istype(oldex, ast_value)) {
2099 /* not possible / sanity check */
2100 parseerror(parser, "internal error: %s is not an ast_value", parser_tokval(parser));
2105 if (!ast_compare_type(oldex, (ast_expression*)fld)) {
2106 parseerror(parser, "field %s has previously been declared with a different type here: %s:%i",
2107 parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line);
2111 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field %s has already been declared here: %s:%i",
2112 parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line))
2123 varent.var = (ast_expression*)fld;
2124 varent.name = util_strdup(fld->name);
2125 (void)!parser_t_fields_add(parser, varent);
2127 if (var->expression.vtype == TYPE_VECTOR)
2129 /* create _x, _y and _z fields as well */
2131 varentry_t vx, vy, vz;
2133 len = strlen(varent.name);
2134 vx.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 0);
2135 vy.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 1);
2136 vz.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 2);
2137 vx.name = (char*)mem_a(len+3);
2138 vy.name = (char*)mem_a(len+3);
2139 vz.name = (char*)mem_a(len+3);
2140 memcpy(vx.name, varent.name, len);
2141 memcpy(vy.name, varent.name, len);
2142 memcpy(vz.name, varent.name, len);
2143 vx.name[len] = vy.name[len] = vz.name[len] = '_';
2144 vx.name[len+1] = 'x';
2145 vy.name[len+1] = 'y';
2146 vz.name[len+1] = 'z';
2147 vx.name[len+2] = vy.name[len+2] = vz.name[len+2] = 0;
2148 (void)!parser_t_fields_add(parser, vx);
2149 (void)!parser_t_fields_add(parser, vy);
2150 (void)!parser_t_fields_add(parser, vz);
2154 if (!parser_next(parser)) {
2155 parseerror(parser, "expected semicolon or another field name");
2158 if (parser->tok == ';')
2160 if (parser->tok != ',' || !parser_next(parser)) {
2161 parseerror(parser, "expected semicolon or another field name");
2166 /* skip the semicolon */
2167 if (!parser_next(parser))
2168 return parser->tok == TOKEN_EOF;
2172 else if (parser->tok == '$')
2174 if (!parser_next(parser)) {
2175 parseerror(parser, "parse error");
2181 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
2187 static parser_t *parser;
2191 parser = (parser_t*)mem_a(sizeof(parser_t));
2195 memset(parser, 0, sizeof(*parser));
2199 bool parser_compile(const char *filename)
2201 parser->lex = lex_open(filename);
2203 printf("failed to open file \"%s\"\n", filename);
2207 /* initial lexer/parser state */
2208 parser->lex->flags.noops = true;
2210 if (parser_next(parser))
2212 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2214 if (!parser_do(parser)) {
2215 if (parser->tok == TOKEN_EOF)
2216 parseerror(parser, "unexpected eof");
2217 else if (!parser->errors)
2218 parseerror(parser, "parse error\n");
2219 lex_close(parser->lex);
2226 lex_close(parser->lex);
2228 return !parser->errors;
2231 void parser_cleanup()
2234 for (i = 0; i < parser->functions_count; ++i) {
2235 ast_delete(parser->functions[i]);
2237 for (i = 0; i < parser->imm_vector_count; ++i) {
2238 ast_delete(parser->imm_vector[i]);
2240 for (i = 0; i < parser->imm_string_count; ++i) {
2241 ast_delete(parser->imm_string[i]);
2243 for (i = 0; i < parser->imm_float_count; ++i) {
2244 ast_delete(parser->imm_float[i]);
2246 for (i = 0; i < parser->globals_count; ++i) {
2247 ast_delete(parser->globals[i].var);
2248 mem_d(parser->globals[i].name);
2250 MEM_VECTOR_CLEAR(parser, globals);
2255 bool parser_finish(const char *output)
2260 if (!parser->errors)
2262 ir = ir_builder_new("gmqcc_out");
2264 printf("failed to allocate builder\n");
2268 for (i = 0; i < parser->imm_float_count; ++i) {
2269 if (!ast_global_codegen(parser->imm_float[i], ir)) {
2270 printf("failed to generate global %s\n", parser->imm_float[i]->name);
2271 ir_builder_delete(ir);
2275 for (i = 0; i < parser->imm_string_count; ++i) {
2276 if (!ast_global_codegen(parser->imm_string[i], ir)) {
2277 printf("failed to generate global %s\n", parser->imm_string[i]->name);
2278 ir_builder_delete(ir);
2282 for (i = 0; i < parser->imm_vector_count; ++i) {
2283 if (!ast_global_codegen(parser->imm_vector[i], ir)) {
2284 printf("failed to generate global %s\n", parser->imm_vector[i]->name);
2285 ir_builder_delete(ir);
2289 for (i = 0; i < parser->fields_count; ++i) {
2292 if (!ast_istype(parser->fields[i].var, ast_value))
2294 field = (ast_value*)parser->fields[i].var;
2295 isconst = field->isconst;
2296 field->isconst = false;
2297 if (!ast_global_codegen((ast_value*)field, ir)) {
2298 printf("failed to generate field %s\n", field->name);
2299 ir_builder_delete(ir);
2304 ast_expression *subtype;
2305 field->isconst = true;
2306 subtype = field->expression.next;
2307 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
2308 if (subtype->expression.vtype == TYPE_FIELD)
2309 ifld->fieldtype = subtype->expression.next->expression.vtype;
2310 else if (subtype->expression.vtype == TYPE_FUNCTION)
2311 ifld->outtype = subtype->expression.next->expression.vtype;
2312 (void)!ir_value_set_field(field->ir_v, ifld);
2315 for (i = 0; i < parser->globals_count; ++i) {
2316 if (!ast_istype(parser->globals[i].var, ast_value))
2318 if (!ast_global_codegen((ast_value*)(parser->globals[i].var), ir)) {
2319 printf("failed to generate global %s\n", parser->globals[i].name);
2320 ir_builder_delete(ir);
2324 for (i = 0; i < parser->functions_count; ++i) {
2325 if (!ast_function_codegen(parser->functions[i], ir)) {
2326 printf("failed to generate function %s\n", parser->functions[i]->name);
2327 ir_builder_delete(ir);
2330 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
2331 printf("failed to finalize function %s\n", parser->functions[i]->name);
2332 ir_builder_delete(ir);
2338 ir_builder_dump(ir, printf);
2340 if (!ir_builder_generate(ir, output)) {
2341 printf("*** failed to generate output file\n");
2342 ir_builder_delete(ir);
2346 ir_builder_delete(ir);
2350 printf("*** there were compile errors\n");