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) {
932 fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
933 if (opts_standard == COMPILER_GMQCC)
936 parseerror(parser, "too few parameters for call to %s: expected %i, got %i",
937 fval->name, (int)fun->expression.params_count, paramcount);
939 parseerror(parser, "too few parameters for function call: expected %i, got %i",
940 (int)fun->expression.params_count, paramcount);
946 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
947 "too few parameters for call to %s: expected %i, got %i",
948 fval->name, (int)fun->expression.params_count, paramcount);
950 return !parsewarning(parser, WARN_TOO_FEW_PARAMETERS,
951 "too few parameters for function call: expected %i, got %i",
952 (int)fun->expression.params_count, paramcount);
960 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
962 if (!sy->ops_count) {
963 parseerror(parser, "unmatched closing paren");
966 if (sy->ops[sy->ops_count-1].paren == 1) {
967 parseerror(parser, "empty parenthesis expression");
970 while (sy->ops_count) {
971 if (sy->ops[sy->ops_count-1].paren == 'f') {
972 if (!parser_close_call(parser, sy))
976 if (sy->ops[sy->ops_count-1].paren == 1) {
978 return !functions_only;
980 if (!parser_sy_pop(parser, sy))
986 static void parser_reclassify_token(parser_t *parser)
989 for (i = 0; i < operator_count; ++i) {
990 if (!strcmp(parser_tokval(parser), operators[i].op)) {
991 parser->tok = TOKEN_OPERATOR;
997 static ast_expression* parser_expression_leave(parser_t *parser, bool stopatcomma)
999 ast_expression *expr = NULL;
1001 bool wantop = false;
1002 bool gotmemberof = false;
1004 /* count the parens because an if starts with one, so the
1005 * end of a condition is an unmatched closing paren
1009 MEM_VECTOR_INIT(&sy, out);
1010 MEM_VECTOR_INIT(&sy, ops);
1012 parser->lex->flags.noops = false;
1014 parser_reclassify_token(parser);
1019 gotmemberof = false;
1021 parser->memberof = 0;
1023 if (parser->tok == TOKEN_IDENT)
1025 ast_expression *var;
1027 parseerror(parser, "expected operator or end of statement");
1032 if (opts_standard == COMPILER_GMQCC)
1034 if (parser->memberof == TYPE_ENTITY) {
1035 /* still get vars first since there could be a fieldpointer */
1036 var = parser_find_var(parser, parser_tokval(parser));
1038 var = parser_find_field(parser, parser_tokval(parser));
1040 else if (parser->memberof == TYPE_VECTOR)
1042 parseerror(parser, "TODO: implement effective vector member access");
1045 else if (parser->memberof) {
1046 parseerror(parser, "namespace for member not found");
1050 var = parser_find_var(parser, parser_tokval(parser));
1052 var = parser_find_var(parser, parser_tokval(parser));
1054 var = parser_find_field(parser, parser_tokval(parser));
1057 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
1060 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), var))) {
1061 parseerror(parser, "out of memory");
1064 DEBUGSHUNTDO(printf("push %s\n", parser_tokval(parser)));
1066 else if (parser->tok == TOKEN_FLOATCONST) {
1069 parseerror(parser, "expected operator or end of statement, got constant");
1073 val = parser_const_float(parser, (parser_token(parser)->constval.f));
1076 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1077 parseerror(parser, "out of memory");
1080 DEBUGSHUNTDO(printf("push %g\n", parser_token(parser)->constval.f));
1082 else if (parser->tok == TOKEN_INTCONST) {
1085 parseerror(parser, "expected operator or end of statement, got constant");
1089 val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
1092 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1093 parseerror(parser, "out of memory");
1096 DEBUGSHUNTDO(printf("push %i\n", parser_token(parser)->constval.i));
1098 else if (parser->tok == TOKEN_STRINGCONST) {
1101 parseerror(parser, "expected operator or end of statement, got constant");
1105 val = parser_const_string(parser, parser_tokval(parser));
1108 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1109 parseerror(parser, "out of memory");
1112 DEBUGSHUNTDO(printf("push string\n"));
1114 else if (parser->tok == TOKEN_VECTORCONST) {
1117 parseerror(parser, "expected operator or end of statement, got constant");
1121 val = parser_const_vector(parser, parser_token(parser)->constval.v);
1124 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
1125 parseerror(parser, "out of memory");
1128 DEBUGSHUNTDO(printf("push '%g %g %g'\n",
1129 parser_token(parser)->constval.v.x,
1130 parser_token(parser)->constval.v.y,
1131 parser_token(parser)->constval.v.z));
1133 else if (parser->tok == '(') {
1134 parseerror(parser, "internal error: '(' should be classified as operator");
1137 else if (parser->tok == ')') {
1139 DEBUGSHUNTDO(printf("do[op] )\n"));
1143 /* we do expect an operator next */
1144 /* closing an opening paren */
1145 if (!parser_close_paren(parser, &sy, false))
1148 DEBUGSHUNTDO(printf("do[nop] )\n"));
1152 /* allowed for function calls */
1153 if (!parser_close_paren(parser, &sy, true))
1158 else if (parser->tok != TOKEN_OPERATOR) {
1160 parseerror(parser, "expected operator or end of statement");
1167 /* classify the operator */
1168 /* TODO: suffix operators */
1169 const oper_info *op;
1170 const oper_info *olast = NULL;
1172 for (o = 0; o < operator_count; ++o) {
1173 if ((!(operators[o].flags & OP_PREFIX) == wantop) &&
1174 !(operators[o].flags & OP_SUFFIX) && /* remove this */
1175 !strcmp(parser_tokval(parser), operators[o].op))
1180 if (o == operator_count) {
1181 /* no operator found... must be the end of the statement */
1184 /* found an operator */
1187 /* when declaring variables, a comma starts a new variable */
1188 if (op->id == opid1(',') && !parens && stopatcomma)
1191 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
1192 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
1195 (op->prec < olast->prec) ||
1196 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
1198 if (!parser_sy_pop(parser, &sy))
1200 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
1201 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
1206 if (op->id == opid1('.') && opts_standard == COMPILER_GMQCC) {
1207 /* for gmqcc standard: open up the namespace of the previous type */
1208 ast_expression *prevex = sy.out[sy.out_count-1].out;
1210 parseerror(parser, "unexpected member operator");
1213 if (prevex->expression.vtype == TYPE_ENTITY)
1214 parser->memberof = TYPE_ENTITY;
1215 else if (prevex->expression.vtype == TYPE_VECTOR)
1216 parser->memberof = TYPE_VECTOR;
1218 parseerror(parser, "type error: type has no members");
1224 if (op->id == opid1('(')) {
1226 DEBUGSHUNTDO(printf("push (\n"));
1228 /* we expected an operator, this is the function-call operator */
1229 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f', sy.out_count-1))) {
1230 parseerror(parser, "out of memory");
1235 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1, 0))) {
1236 parseerror(parser, "out of memory");
1239 DEBUGSHUNTDO(printf("push (\n"));
1243 DEBUGSHUNTDO(printf("push operator %s\n", op->op));
1244 if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
1249 if (!parser_next(parser)) {
1252 if (parser->tok == ';') {
1257 while (sy.ops_count) {
1258 if (!parser_sy_pop(parser, &sy))
1262 parser->lex->flags.noops = true;
1263 if (!sy.out_count) {
1264 parseerror(parser, "empty expression");
1267 expr = sy.out[0].out;
1268 MEM_VECTOR_CLEAR(&sy, out);
1269 MEM_VECTOR_CLEAR(&sy, ops);
1270 DEBUGSHUNTDO(printf("shunt done\n"));
1274 parser->lex->flags.noops = true;
1275 MEM_VECTOR_CLEAR(&sy, out);
1276 MEM_VECTOR_CLEAR(&sy, ops);
1280 static ast_expression* parser_expression(parser_t *parser, bool stopatcomma)
1282 ast_expression *e = parser_expression_leave(parser, stopatcomma);
1285 if (!parser_next(parser)) {
1292 static bool parser_parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1295 ast_expression *cond, *ontrue, *onfalse = NULL;
1297 lex_ctx ctx = parser_ctx(parser);
1299 /* skip the 'if' and check for opening paren */
1300 if (!parser_next(parser) || parser->tok != '(') {
1301 parseerror(parser, "expected 'if' condition in parenthesis");
1304 /* parse into the expression */
1305 if (!parser_next(parser)) {
1306 parseerror(parser, "expected 'if' condition after opening paren");
1309 /* parse the condition */
1310 cond = parser_expression_leave(parser, false);
1314 if (parser->tok != ')') {
1315 parseerror(parser, "expected closing paren after 'if' condition");
1319 /* parse into the 'then' branch */
1320 if (!parser_next(parser)) {
1321 parseerror(parser, "expected statement for on-true branch of 'if'");
1325 ontrue = parser_parse_statement_or_block(parser);
1330 /* check for an else */
1331 if (!strcmp(parser_tokval(parser), "else")) {
1332 /* parse into the 'else' branch */
1333 if (!parser_next(parser)) {
1334 parseerror(parser, "expected on-false branch after 'else'");
1339 onfalse = parser_parse_statement_or_block(parser);
1347 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1348 *out = (ast_expression*)ifthen;
1352 static bool parser_parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1355 ast_expression *cond, *ontrue;
1357 lex_ctx ctx = parser_ctx(parser);
1359 /* skip the 'while' and check for opening paren */
1360 if (!parser_next(parser) || parser->tok != '(') {
1361 parseerror(parser, "expected 'while' condition in parenthesis");
1364 /* parse into the expression */
1365 if (!parser_next(parser)) {
1366 parseerror(parser, "expected 'while' condition after opening paren");
1369 /* parse the condition */
1370 cond = parser_expression_leave(parser, false);
1374 if (parser->tok != ')') {
1375 parseerror(parser, "expected closing paren after 'while' condition");
1379 /* parse into the 'then' branch */
1380 if (!parser_next(parser)) {
1381 parseerror(parser, "expected while-loop body");
1385 ontrue = parser_parse_statement_or_block(parser);
1391 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1392 *out = (ast_expression*)aloop;
1396 static bool parser_parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
1399 ast_expression *cond, *ontrue;
1401 lex_ctx ctx = parser_ctx(parser);
1403 /* skip the 'do' and get the body */
1404 if (!parser_next(parser)) {
1405 parseerror(parser, "expected loop body");
1408 ontrue = parser_parse_statement_or_block(parser);
1412 /* expect the "while" */
1413 if (parser->tok != TOKEN_KEYWORD ||
1414 strcmp(parser_tokval(parser), "while"))
1416 parseerror(parser, "expected 'while' and condition");
1421 /* skip the 'while' and check for opening paren */
1422 if (!parser_next(parser) || parser->tok != '(') {
1423 parseerror(parser, "expected 'while' condition in parenthesis");
1427 /* parse into the expression */
1428 if (!parser_next(parser)) {
1429 parseerror(parser, "expected 'while' condition after opening paren");
1433 /* parse the condition */
1434 cond = parser_expression_leave(parser, false);
1438 if (parser->tok != ')') {
1439 parseerror(parser, "expected closing paren after 'while' condition");
1445 if (!parser_next(parser) || parser->tok != ';') {
1446 parseerror(parser, "expected semicolon after condition");
1452 if (!parser_next(parser)) {
1453 parseerror(parser, "parse error");
1459 aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
1460 *out = (ast_expression*)aloop;
1464 static bool parser_parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1467 ast_expression *initexpr, *cond, *increment, *ontrue;
1468 size_t oldblocklocal;
1470 lex_ctx ctx = parser_ctx(parser);
1472 oldblocklocal = parser->blocklocal;
1473 parser->blocklocal = parser->locals_count;
1480 /* skip the 'while' and check for opening paren */
1481 if (!parser_next(parser) || parser->tok != '(') {
1482 parseerror(parser, "expected 'for' expressions in parenthesis");
1485 /* parse into the expression */
1486 if (!parser_next(parser)) {
1487 parseerror(parser, "expected 'for' initializer after opening paren");
1491 if (parser->tok == TOKEN_TYPENAME) {
1492 if (opts_standard != COMPILER_GMQCC) {
1493 if (parsewarning(parser, WARN_EXTENSIONS,
1494 "current standard does not allow variable declarations in for-loop initializers"))
1498 parseerror(parser, "TODO: assignment of new variables to be non-const");
1500 if (!parser_variable(parser, block))
1503 else if (parser->tok != ';')
1505 initexpr = parser_expression_leave(parser, false);
1510 /* move on to condition */
1511 if (parser->tok != ';') {
1512 parseerror(parser, "expected semicolon after for-loop initializer");
1515 if (!parser_next(parser)) {
1516 parseerror(parser, "expected for-loop condition");
1520 /* parse the condition */
1521 if (parser->tok != ';') {
1522 cond = parser_expression_leave(parser, false);
1527 /* move on to incrementor */
1528 if (parser->tok != ';') {
1529 parseerror(parser, "expected semicolon after for-loop initializer");
1532 if (!parser_next(parser)) {
1533 parseerror(parser, "expected for-loop condition");
1537 /* parse the incrementor */
1538 if (parser->tok != ')') {
1539 increment = parser_expression_leave(parser, false);
1545 if (parser->tok != ')') {
1546 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1549 /* parse into the 'then' branch */
1550 if (!parser_next(parser)) {
1551 parseerror(parser, "expected for-loop body");
1554 ontrue = parser_parse_statement_or_block(parser);
1559 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1560 *out = (ast_expression*)aloop;
1562 while (parser->locals_count > parser->blocklocal)
1563 parser_pop_local(parser);
1564 parser->blocklocal = oldblocklocal;
1567 if (initexpr) ast_delete(initexpr);
1568 if (cond) ast_delete(cond);
1569 if (increment) ast_delete(increment);
1570 while (parser->locals_count > parser->blocklocal)
1571 parser_pop_local(parser);
1572 parser->blocklocal = oldblocklocal;
1576 static bool parser_parse_statement(parser_t *parser, ast_block *block, ast_expression **out)
1578 if (parser->tok == TOKEN_TYPENAME)
1580 /* local variable */
1582 parseerror(parser, "cannot declare a variable from here");
1585 if (opts_standard == COMPILER_QCC) {
1586 if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
1589 if (!parser_variable(parser, block))
1594 else if (parser->tok == TOKEN_KEYWORD)
1596 if (!strcmp(parser_tokval(parser), "local"))
1599 parseerror(parser, "cannot declare a local variable here");
1602 if (!parser_next(parser)) {
1603 parseerror(parser, "expected variable declaration");
1606 if (!parser_variable(parser, block))
1611 else if (!strcmp(parser_tokval(parser), "return"))
1613 ast_expression *exp = NULL;
1614 ast_return *ret = NULL;
1615 ast_value *expected = parser->function->vtype;
1617 if (!parser_next(parser)) {
1618 parseerror(parser, "expected return expression");
1622 if (parser->tok != ';') {
1623 exp = parser_expression(parser, false);
1627 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
1628 parseerror(parser, "return with invalid expression");
1631 ret = ast_return_new(exp->expression.node.context, exp);
1637 if (!parser_next(parser))
1638 parseerror(parser, "parse error");
1639 if (expected->expression.next->expression.vtype != TYPE_VOID) {
1640 if (opts_standard != COMPILER_GMQCC)
1641 (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
1643 parseerror(parser, "return without value");
1645 ret = ast_return_new(parser_ctx(parser), NULL);
1647 *out = (ast_expression*)ret;
1650 else if (!strcmp(parser_tokval(parser), "if"))
1652 return parser_parse_if(parser, block, out);
1654 else if (!strcmp(parser_tokval(parser), "while"))
1656 return parser_parse_while(parser, block, out);
1658 else if (!strcmp(parser_tokval(parser), "do"))
1660 return parser_parse_dowhile(parser, block, out);
1662 else if (!strcmp(parser_tokval(parser), "for"))
1664 if (opts_standard == COMPILER_QCC) {
1665 if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
1668 return parser_parse_for(parser, block, out);
1670 parseerror(parser, "Unexpected keyword");
1673 else if (parser->tok == '{')
1676 inner = parser_parse_block(parser);
1679 *out = (ast_expression*)inner;
1684 ast_expression *exp = parser_expression(parser, false);
1692 static void parser_pop_local(parser_t *parser)
1694 parser->locals_count--;
1695 mem_d(parser->locals[parser->locals_count].name);
1698 static ast_block* parser_parse_block(parser_t *parser)
1700 size_t oldblocklocal;
1701 ast_block *block = NULL;
1703 oldblocklocal = parser->blocklocal;
1704 parser->blocklocal = parser->locals_count;
1706 if (!parser_next(parser)) { /* skip the '{' */
1707 parseerror(parser, "expected function body");
1711 block = ast_block_new(parser_ctx(parser));
1713 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
1715 ast_expression *expr;
1716 if (parser->tok == '}')
1719 if (!parser_parse_statement(parser, block, &expr)) {
1720 parseerror(parser, "parse error");
1721 ast_block_delete(block);
1727 if (!ast_block_exprs_add(block, expr)) {
1729 ast_block_delete(block);
1735 if (parser->tok != '}') {
1736 ast_block_delete(block);
1739 (void)parser_next(parser);
1743 while (parser->locals_count > parser->blocklocal)
1744 parser_pop_local(parser);
1745 parser->blocklocal = oldblocklocal;
1746 /* unroll the local vector */
1750 static ast_expression* parser_parse_statement_or_block(parser_t *parser)
1752 ast_expression *expr = NULL;
1753 if (parser->tok == '{')
1754 return (ast_expression*)parser_parse_block(parser);
1755 if (!parser_parse_statement(parser, NULL, &expr))
1760 static bool parser_variable(parser_t *parser, ast_block *localblock)
1762 bool isfunc = false;
1763 ast_function *func = NULL;
1767 ast_expression *olddecl;
1771 int basetype = parser_token(parser)->constval.t;
1777 if (!parser_next(parser)) { /* skip basetype or comma */
1778 parseerror(parser, "expected variable declaration");
1785 ctx = parser_ctx(parser);
1786 var = parser_parse_type(parser, basetype, &isfunc);
1791 if (parser->tok != TOKEN_IDENT) {
1792 parseerror(parser, "expected variable name\n");
1797 if (!localblock && (olddecl = parser_find_global(parser, parser_tokval(parser)))) {
1798 ast_value_delete(var);
1799 parseerror(parser, "global %s already declared here: %s:%i",
1800 parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
1804 if (localblock && (olddecl = parser_find_local(parser, parser_tokval(parser), parser->blocklocal))) {
1805 ast_value_delete(var);
1806 parseerror(parser, "local %s already declared here: %s:%i",
1807 parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
1812 if (!ast_value_set_name(var, parser_tokval(parser))) {
1813 parseerror(parser, "failed to set variable name\n");
1814 ast_value_delete(var);
1819 /* a function was defined */
1821 ast_value *proto = NULL;
1824 olddecl = parser_find_global(parser, parser_tokval(parser));
1826 olddecl = parser_find_local(parser, parser_tokval(parser), parser->blocklocal);
1829 /* we had a prototype */
1830 if (!ast_istype(olddecl, ast_value)) {
1831 /* theoretically not possible you think?
1837 parseerror(parser, "cannot declare a function with the same name as a vector's member: %s",
1838 parser_tokval(parser));
1839 ast_value_delete(var);
1843 proto = (ast_value*)olddecl;
1846 /* turn var into a value of TYPE_FUNCTION, with the old var
1849 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
1850 func = ast_function_new(ctx, var->name, fval);
1851 if (!fval || !func) {
1852 ast_value_delete(var);
1853 if (fval) ast_value_delete(fval);
1854 if (func) ast_function_delete(func);
1858 fval->expression.next = (ast_expression*)var;
1859 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
1861 /* we compare the type late here, but it's easier than
1862 * messing with the parameter-vector etc. earlier
1866 if (!ast_compare_type((ast_expression*)proto, (ast_expression*)fval)) {
1867 parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
1869 ast_ctx(proto).file, ast_ctx(proto).line);
1870 ast_function_delete(func);
1871 ast_value_delete(fval);
1874 /* copy over the parameter names */
1875 for (param = 0; param < fval->expression.params_count; ++param)
1876 ast_value_set_name(proto->expression.params[param], fval->expression.params[param]->name);
1878 /* now ditch the rest of the new data */
1879 ast_function_delete(func);
1880 ast_value_delete(fval);
1882 func = proto->constval.vfunc;
1887 if (!parser_t_functions_add(parser, func)) {
1888 ast_function_delete(func);
1889 ast_value_delete(fval);
1898 varent.name = util_strdup(var->name);
1899 varent.var = (ast_expression*)var;
1900 if (var->expression.vtype == TYPE_VECTOR)
1902 size_t len = strlen(varent.name);
1903 varentry_t vx, vy, vz;
1904 vx.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 0);
1905 vy.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 1);
1906 vz.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 2);
1907 vx.name = (char*)mem_a(len+3);
1908 vy.name = (char*)mem_a(len+3);
1909 vz.name = (char*)mem_a(len+3);
1910 memcpy(vx.name, varent.name, len);
1911 memcpy(vy.name, varent.name, len);
1912 memcpy(vz.name, varent.name, len);
1913 vx.name[len] = vy.name[len] = vz.name[len] = '_';
1914 vx.name[len+1] = 'x';
1915 vy.name[len+1] = 'y';
1916 vz.name[len+1] = 'z';
1917 vx.name[len+2] = vy.name[len+2] = vz.name[len+2] = 0;
1920 (void)!parser_t_globals_add(parser, varent);
1921 (void)!parser_t_globals_add(parser, vx);
1922 (void)!parser_t_globals_add(parser, vy);
1923 (void)!parser_t_globals_add(parser, vz);
1925 (void)!parser_t_locals_add(parser, varent);
1926 (void)!parser_t_locals_add(parser, vx);
1927 (void)!parser_t_locals_add(parser, vy);
1928 (void)!parser_t_locals_add(parser, vz);
1929 if (!ast_block_locals_add(localblock, var) ||
1930 !ast_block_collect(localblock, vx.var) ||
1931 !ast_block_collect(localblock, vy.var) ||
1932 !ast_block_collect(localblock, vz.var))
1934 parser_pop_local(parser);
1935 parser_pop_local(parser);
1936 parser_pop_local(parser);
1937 parser_pop_local(parser);
1938 ast_value_delete(var);
1945 if ( (!localblock && !parser_t_globals_add(parser, varent)) ||
1946 ( localblock && !parser_t_locals_add(parser, varent)) )
1948 ast_value_delete(var);
1951 if (localblock && !ast_block_locals_add(localblock, var))
1953 parser_pop_local(parser);
1954 ast_value_delete(var);
1960 if (!parser_next(parser)) {
1961 ast_value_delete(var);
1965 if (parser->tok == ';') {
1966 if (!parser_next(parser))
1967 return parser->tok == TOKEN_EOF;
1971 if (parser->tok == ',') {
1976 if (parser->tok != '=') {
1977 parseerror(parser, "expected '=' or ';'");
1981 if (!parser_next(parser))
1984 if (parser->tok == '#') {
1986 parseerror(parser, "cannot declare builtins within functions");
1989 if (!isfunc || !func) {
1990 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
1993 if (!parser_next(parser)) {
1994 parseerror(parser, "expected builtin number");
1997 if (parser->tok != TOKEN_INTCONST) {
1998 parseerror(parser, "builtin number must be an integer constant");
2001 if (parser_token(parser)->constval.i <= 0) {
2002 parseerror(parser, "builtin number must be positive integer greater than zero");
2006 func->builtin = -parser_token(parser)->constval.i;
2008 if (!parser_next(parser))
2010 } else if (parser->tok == '{') {
2013 ast_function *old = parser->function;
2016 parseerror(parser, "cannot declare functions within functions");
2020 parser->function = func;
2021 block = parser_parse_block(parser);
2022 parser->function = old;
2027 if (!ast_function_blocks_add(func, block)) {
2028 ast_block_delete(block);
2032 if (parser->tok == ';')
2033 return parser_next(parser) || parser->tok == TOKEN_EOF;
2034 else if (opts_standard == COMPILER_QCC)
2035 parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
2038 ast_expression *cexp;
2041 cexp = parser_expression_leave(parser, true);
2042 cval = (ast_value*)cexp;
2043 if (!ast_istype(cval, ast_value) || !cval->isconst)
2044 parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
2047 var->isconst = true;
2048 memcpy(&var->constval, &cval->constval, sizeof(var->constval));
2049 memset(&cval->constval, 0, sizeof(cval->constval));
2054 if (parser->tok == ',') {
2059 if (parser->tok != ';') {
2060 parseerror(parser, "missing semicolon");
2064 (void)parser_next(parser);
2070 static bool parser_do(parser_t *parser)
2072 if (parser->tok == TOKEN_TYPENAME)
2074 return parser_variable(parser, NULL);
2076 else if (parser->tok == TOKEN_KEYWORD)
2078 /* handle 'var' and 'const' */
2081 else if (parser->tok == '.')
2086 ast_expression *oldex;
2087 bool isfunc = false;
2089 lex_ctx ctx = parser_ctx(parser);
2092 /* entity-member declaration */
2093 if (!parser_next(parser) || parser->tok != TOKEN_TYPENAME) {
2094 parseerror(parser, "expected member variable definition");
2098 /* remember the base/return type */
2099 basetype = parser_token(parser)->constval.t;
2101 /* parse into the declaration */
2102 if (!parser_next(parser)) {
2103 parseerror(parser, "expected field def");
2107 /* parse the field type fully */
2108 typevar = var = parser_parse_type(parser, basetype, &isfunc);
2113 var = ast_value_copy(typevar);
2114 /* now the field name */
2115 if (parser->tok != TOKEN_IDENT) {
2116 parseerror(parser, "expected field name");
2121 /* check for an existing field
2122 * in original qc we also have to check for an existing
2123 * global named like the field
2125 if (opts_standard == COMPILER_QCC) {
2126 if (parser_find_global(parser, parser_tokval(parser))) {
2127 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
2135 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
2137 ast_value_delete(var);
2140 fval->expression.next = (ast_expression*)var;
2141 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
2145 /* turn it into a field */
2146 fld = ast_value_new(ctx, parser_tokval(parser), TYPE_FIELD);
2147 fld->expression.next = (ast_expression*)var;
2149 if ( (oldex = parser_find_field(parser, parser_tokval(parser)))) {
2150 if (ast_istype(oldex, ast_member)) {
2151 parseerror(parser, "cannot declare a field with the same name as a vector component, component %s has been declared here: %s:%i",
2152 parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line);
2156 if (!ast_istype(oldex, ast_value)) {
2157 /* not possible / sanity check */
2158 parseerror(parser, "internal error: %s is not an ast_value", parser_tokval(parser));
2163 if (!ast_compare_type(oldex, (ast_expression*)fld)) {
2164 parseerror(parser, "field %s has previously been declared with a different type here: %s:%i",
2165 parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line);
2169 if (parsewarning(parser, WARN_FIELD_REDECLARED, "field %s has already been declared here: %s:%i",
2170 parser_tokval(parser), ast_ctx(oldex).file, (int)ast_ctx(oldex).line))
2181 varent.var = (ast_expression*)fld;
2182 varent.name = util_strdup(fld->name);
2183 (void)!parser_t_fields_add(parser, varent);
2185 if (var->expression.vtype == TYPE_VECTOR)
2187 /* create _x, _y and _z fields as well */
2189 varentry_t vx, vy, vz;
2191 len = strlen(varent.name);
2192 vx.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 0);
2193 vy.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 1);
2194 vz.var = (ast_expression*)ast_member_new(ast_ctx(fld), (ast_expression*)fld, 2);
2195 vx.name = (char*)mem_a(len+3);
2196 vy.name = (char*)mem_a(len+3);
2197 vz.name = (char*)mem_a(len+3);
2198 memcpy(vx.name, varent.name, len);
2199 memcpy(vy.name, varent.name, len);
2200 memcpy(vz.name, varent.name, len);
2201 vx.name[len] = vy.name[len] = vz.name[len] = '_';
2202 vx.name[len+1] = 'x';
2203 vy.name[len+1] = 'y';
2204 vz.name[len+1] = 'z';
2205 vx.name[len+2] = vy.name[len+2] = vz.name[len+2] = 0;
2206 (void)!parser_t_fields_add(parser, vx);
2207 (void)!parser_t_fields_add(parser, vy);
2208 (void)!parser_t_fields_add(parser, vz);
2212 if (!parser_next(parser)) {
2213 parseerror(parser, "expected semicolon or another field name");
2216 if (parser->tok == ';')
2218 if (parser->tok != ',' || !parser_next(parser)) {
2219 parseerror(parser, "expected semicolon or another field name");
2223 ast_delete(typevar);
2225 /* skip the semicolon */
2226 if (!parser_next(parser))
2227 return parser->tok == TOKEN_EOF;
2231 else if (parser->tok == '$')
2233 if (!parser_next(parser)) {
2234 parseerror(parser, "parse error");
2240 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
2246 static parser_t *parser;
2250 parser = (parser_t*)mem_a(sizeof(parser_t));
2254 memset(parser, 0, sizeof(*parser));
2258 bool parser_compile(const char *filename)
2260 parser->lex = lex_open(filename);
2262 printf("failed to open file \"%s\"\n", filename);
2266 /* initial lexer/parser state */
2267 parser->lex->flags.noops = true;
2269 if (parser_next(parser))
2271 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
2273 if (!parser_do(parser)) {
2274 if (parser->tok == TOKEN_EOF)
2275 parseerror(parser, "unexpected eof");
2276 else if (!parser->errors)
2277 parseerror(parser, "parse error\n");
2278 lex_close(parser->lex);
2285 lex_close(parser->lex);
2288 return !parser->errors;
2291 void parser_cleanup()
2294 for (i = 0; i < parser->functions_count; ++i) {
2295 ast_delete(parser->functions[i]);
2297 for (i = 0; i < parser->imm_vector_count; ++i) {
2298 ast_delete(parser->imm_vector[i]);
2300 for (i = 0; i < parser->imm_string_count; ++i) {
2301 ast_delete(parser->imm_string[i]);
2303 for (i = 0; i < parser->imm_float_count; ++i) {
2304 ast_delete(parser->imm_float[i]);
2306 for (i = 0; i < parser->fields_count; ++i) {
2307 ast_delete(parser->fields[i].var);
2308 mem_d(parser->fields[i].name);
2310 for (i = 0; i < parser->globals_count; ++i) {
2311 ast_delete(parser->globals[i].var);
2312 mem_d(parser->globals[i].name);
2314 MEM_VECTOR_CLEAR(parser, functions);
2315 MEM_VECTOR_CLEAR(parser, imm_vector);
2316 MEM_VECTOR_CLEAR(parser, imm_string);
2317 MEM_VECTOR_CLEAR(parser, imm_float);
2318 MEM_VECTOR_CLEAR(parser, globals);
2319 MEM_VECTOR_CLEAR(parser, fields);
2320 MEM_VECTOR_CLEAR(parser, locals);
2325 bool parser_finish(const char *output)
2330 if (!parser->errors)
2332 ir = ir_builder_new("gmqcc_out");
2334 printf("failed to allocate builder\n");
2338 for (i = 0; i < parser->imm_float_count; ++i) {
2339 if (!ast_global_codegen(parser->imm_float[i], ir)) {
2340 printf("failed to generate global %s\n", parser->imm_float[i]->name);
2341 ir_builder_delete(ir);
2345 for (i = 0; i < parser->imm_string_count; ++i) {
2346 if (!ast_global_codegen(parser->imm_string[i], ir)) {
2347 printf("failed to generate global %s\n", parser->imm_string[i]->name);
2348 ir_builder_delete(ir);
2352 for (i = 0; i < parser->imm_vector_count; ++i) {
2353 if (!ast_global_codegen(parser->imm_vector[i], ir)) {
2354 printf("failed to generate global %s\n", parser->imm_vector[i]->name);
2355 ir_builder_delete(ir);
2359 for (i = 0; i < parser->fields_count; ++i) {
2362 if (!ast_istype(parser->fields[i].var, ast_value))
2364 field = (ast_value*)parser->fields[i].var;
2365 isconst = field->isconst;
2366 field->isconst = false;
2367 if (!ast_global_codegen((ast_value*)field, ir)) {
2368 printf("failed to generate field %s\n", field->name);
2369 ir_builder_delete(ir);
2374 ast_expression *subtype;
2375 field->isconst = true;
2376 subtype = field->expression.next;
2377 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
2378 if (subtype->expression.vtype == TYPE_FIELD)
2379 ifld->fieldtype = subtype->expression.next->expression.vtype;
2380 else if (subtype->expression.vtype == TYPE_FUNCTION)
2381 ifld->outtype = subtype->expression.next->expression.vtype;
2382 (void)!ir_value_set_field(field->ir_v, ifld);
2385 for (i = 0; i < parser->globals_count; ++i) {
2386 if (!ast_istype(parser->globals[i].var, ast_value))
2388 if (!ast_global_codegen((ast_value*)(parser->globals[i].var), ir)) {
2389 printf("failed to generate global %s\n", parser->globals[i].name);
2390 ir_builder_delete(ir);
2394 for (i = 0; i < parser->functions_count; ++i) {
2395 if (!ast_function_codegen(parser->functions[i], ir)) {
2396 printf("failed to generate function %s\n", parser->functions[i]->name);
2397 ir_builder_delete(ir);
2400 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
2401 printf("failed to finalize function %s\n", parser->functions[i]->name);
2402 ir_builder_delete(ir);
2408 ir_builder_dump(ir, printf);
2410 if (!ir_builder_generate(ir, output)) {
2411 printf("*** failed to generate output file\n");
2412 ir_builder_delete(ir);
2416 ir_builder_delete(ir);
2420 printf("*** there were compile errors\n");