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_function *function;
24 MEM_VECTOR_MAKE(varentry_t, locals);
29 /* TYPE_FIELD -> parser_find_fields is used instead of find_var
30 * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
31 * anything else: type error
36 MEM_VEC_FUNCTIONS(parser_t, varentry_t, globals)
37 MEM_VEC_FUNCTIONS(parser_t, varentry_t, fields)
38 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_float)
39 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_string)
40 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_vector)
41 MEM_VEC_FUNCTIONS(parser_t, varentry_t, locals)
42 MEM_VEC_FUNCTIONS(parser_t, ast_function*, functions)
44 static void parser_pop_local(parser_t *parser);
45 static bool parser_variable(parser_t *parser, ast_block *localblock);
46 static ast_block* parser_parse_block(parser_t *parser);
47 static ast_expression* parser_parse_statement_or_block(parser_t *parser);
48 static ast_expression* parser_expression_leave(parser_t *parser);
49 static ast_expression* parser_expression(parser_t *parser);
51 void parseerror(parser_t *parser, const char *fmt, ...)
58 printf("error %s:%lu: ", parser->lex->tok->ctx.file, (unsigned long)parser->lex->tok->ctx.line);
69 /* returns true if it counts as an error */
70 bool parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
75 if (OPTS_WARN(WARN_ERROR))
79 if (!OPTS_WARN(warntype))
83 printf("warning %s:%lu: ", parser->lex->tok->ctx.file, (unsigned long)parser->lex->tok->ctx.line);
99 bool parser_next(parser_t *parser)
101 /* lex_do kills the previous token */
102 parser->tok = lex_do(parser->lex);
103 if (parser->tok == TOKEN_EOF || parser->tok >= TOKEN_ERROR)
108 /* lift a token out of the parser so it's not destroyed by parser_next */
109 token *parser_lift(parser_t *parser)
111 token *tok = parser->lex->tok;
112 parser->lex->tok = NULL;
116 #define parser_tokval(p) (p->lex->tok->value)
117 #define parser_token(p) (p->lex->tok)
118 #define parser_ctx(p) (p->lex->tok->ctx)
120 ast_value* parser_const_float(parser_t *parser, double d)
124 for (i = 0; i < parser->imm_float_count; ++i) {
125 if (parser->imm_float[i]->constval.vfloat == d)
126 return parser->imm_float[i];
128 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
130 out->constval.vfloat = d;
131 if (!parser_t_imm_float_add(parser, out)) {
132 ast_value_delete(out);
138 ast_value* parser_const_string(parser_t *parser, const char *str)
142 for (i = 0; i < parser->imm_string_count; ++i) {
143 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
144 return parser->imm_string[i];
146 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
148 out->constval.vstring = util_strdup(str);
149 if (!parser_t_imm_string_add(parser, out)) {
150 ast_value_delete(out);
156 ast_value* parser_const_vector(parser_t *parser, vector v)
160 for (i = 0; i < parser->imm_vector_count; ++i) {
161 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
162 return parser->imm_vector[i];
164 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
166 out->constval.vvec = v;
167 if (!parser_t_imm_vector_add(parser, out)) {
168 ast_value_delete(out);
174 ast_expression* parser_find_field(parser_t *parser, const char *name)
177 for (i = 0; i < parser->fields_count; ++i) {
178 if (!strcmp(parser->fields[i].name, name))
179 return parser->fields[i].var;
184 ast_expression* parser_find_global(parser_t *parser, const char *name)
187 for (i = 0; i < parser->globals_count; ++i) {
188 if (!strcmp(parser->globals[i].name, name))
189 return parser->globals[i].var;
194 ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto)
198 for (i = parser->locals_count; i > upto;) {
200 if (!strcmp(parser->locals[i].name, name))
201 return parser->locals[i].var;
203 fun = parser->function->vtype;
204 for (i = 0; i < fun->expression.params_count; ++i) {
205 if (!strcmp(fun->expression.params[i]->name, name))
206 return (ast_expression*)(fun->expression.params[i]);
211 ast_expression* parser_find_var(parser_t *parser, const char *name)
214 v = parser_find_local(parser, name, 0);
215 if (!v) v = parser_find_global(parser, name);
220 MEM_VECTOR_MAKE(ast_value*, p);
222 MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
224 static ast_value *parser_parse_type(parser_t *parser, int basetype, bool *isfunc)
228 lex_ctx ctx = parser_ctx(parser);
229 int vtype = basetype;
233 MEM_VECTOR_INIT(¶ms, p);
237 if (parser->tok == '(') {
243 if (!parser_next(parser))
246 if (parser->tok == ')')
249 temptype = parser_token(parser)->constval.t;
250 if (!parser_next(parser))
253 param = parser_parse_type(parser, temptype, &dummy);
259 if (parser->tok == TOKEN_IDENT) {
260 /* named parameter */
261 if (!ast_value_set_name(param, parser_tokval(parser)))
263 if (!parser_next(parser))
267 if (!paramlist_t_p_add(¶ms, param)) {
268 parseerror(parser, "Out of memory while parsing typename");
272 if (parser->tok == ',')
274 if (parser->tok == ')')
276 parseerror(parser, "Unexpected token");
279 if (!parser_next(parser))
283 var = ast_value_new(ctx, "<unnamed>", vtype);
286 MEM_VECTOR_MOVE(¶ms, p, &var->expression, params);
289 for (i = 0; i < params.p_count; ++i)
290 ast_value_delete(params.p[i]);
291 MEM_VECTOR_CLEAR(¶ms, p);
297 size_t etype; /* 0 = expression, others are operators */
301 ast_block *block; /* for commas and function calls */
306 MEM_VECTOR_MAKE(sy_elem, out);
307 MEM_VECTOR_MAKE(sy_elem, ops);
309 MEM_VEC_FUNCTIONS(shunt, sy_elem, out)
310 MEM_VEC_FUNCTIONS(shunt, sy_elem, ops)
312 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
322 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
325 e.out = (ast_expression*)v;
332 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
334 e.etype = 1 + (op - operators);
342 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
354 # define DEBUGSHUNTDO(x) x
356 # define DEBUGSHUNTDO(x)
359 static bool parser_sy_pop(parser_t *parser, shunt *sy)
363 ast_expression *out = NULL;
364 ast_expression *exprs[3];
365 ast_block *blocks[3];
367 qcint generated_op = 0;
369 if (!sy->ops_count) {
370 parseerror(parser, "internal error: missing operator");
374 if (sy->ops[sy->ops_count-1].paren) {
375 parseerror(parser, "unmatched parenthesis");
379 op = &operators[sy->ops[sy->ops_count-1].etype - 1];
380 ctx = sy->ops[sy->ops_count-1].ctx;
382 DEBUGSHUNTDO(printf("apply %s\n", op->op));
384 if (sy->out_count < op->operands) {
385 parseerror(parser, "internal error: not enough operands: %i", sy->out_count);
391 sy->out_count -= op->operands;
392 for (i = 0; i < op->operands; ++i) {
393 exprs[i] = sy->out[sy->out_count+i].out;
394 blocks[i] = sy->out[sy->out_count+i].block;
397 if (blocks[0] && !blocks[0]->exprs_count && op->id != opid1(',')) {
398 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
402 #define NotSameType(T) \
403 (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
404 exprs[0]->expression.vtype != T)
408 parseerror(parser, "internal error: unhandled operand");
412 if (exprs[0]->expression.vtype == TYPE_ENTITY) {
413 if (exprs[1]->expression.vtype != TYPE_FIELD) {
414 parseerror(parser, "type error: right hand of member-operand should be an entity-field");
417 out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
419 else if (exprs[0]->expression.vtype == TYPE_VECTOR) {
420 parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
424 parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
431 if (!ast_block_exprs_add(blocks[0], exprs[1]))
434 blocks[0] = ast_block_new(ctx);
435 if (!ast_block_exprs_add(blocks[0], exprs[0]) ||
436 !ast_block_exprs_add(blocks[0], exprs[1]))
441 if (!ast_block_set_type(blocks[0], exprs[1]))
444 sy->out[sy->out_count++] = syblock(ctx, blocks[0]);
448 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
449 parseerror(parser, "Cannot add type %s and %s",
450 type_name[exprs[0]->expression.vtype],
451 type_name[exprs[1]->expression.vtype]);
454 if (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) {
455 parseerror(parser, "type error: %s - %s not defined",
456 type_name[exprs[0]->expression.vtype],
457 type_name[exprs[1]->expression.vtype]);
460 switch (exprs[0]->expression.vtype) {
462 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
465 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
468 parseerror(parser, "type error: cannot add type %s to %s",
469 type_name[exprs[0]->expression.vtype],
470 type_name[exprs[1]->expression.vtype]);
475 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
476 parseerror(parser, "type error: cannot subtract type %s from %s",
477 type_name[exprs[1]->expression.vtype],
478 type_name[exprs[0]->expression.vtype]);
481 if (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) {
482 parseerror(parser, "type error: %s - %s not defined",
483 type_name[exprs[0]->expression.vtype],
484 type_name[exprs[1]->expression.vtype]);
487 switch (exprs[0]->expression.vtype) {
489 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
492 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
495 parseerror(parser, "type error: cannot subtract type %s from %s",
496 type_name[exprs[1]->expression.vtype],
497 type_name[exprs[0]->expression.vtype]);
502 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
503 exprs[0]->expression.vtype != TYPE_VECTOR &&
504 exprs[0]->expression.vtype != TYPE_FLOAT &&
505 exprs[1]->expression.vtype != TYPE_VECTOR &&
506 exprs[1]->expression.vtype != TYPE_FLOAT)
508 parseerror(parser, "type error: cannot multiply type %s by %s",
509 type_name[exprs[1]->expression.vtype],
510 type_name[exprs[0]->expression.vtype]);
513 switch (exprs[0]->expression.vtype) {
515 if (exprs[1]->expression.vtype == TYPE_VECTOR)
516 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
518 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
521 if (exprs[1]->expression.vtype == TYPE_FLOAT)
522 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
524 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
527 parseerror(parser, "type error: cannot multiplye type %s by %s",
528 type_name[exprs[1]->expression.vtype],
529 type_name[exprs[0]->expression.vtype]);
534 if (NotSameType(TYPE_FLOAT)) {
535 parseerror(parser, "type error: cannot divide types %s and %s",
536 type_name[exprs[0]->expression.vtype],
537 type_name[exprs[1]->expression.vtype]);
540 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
544 parseerror(parser, "qc does not have a modulo operator");
548 if (NotSameType(TYPE_FLOAT)) {
549 parseerror(parser, "type error: cannot perform bit operations on types %s and %s",
550 type_name[exprs[0]->expression.vtype],
551 type_name[exprs[1]->expression.vtype]);
554 out = (ast_expression*)ast_binary_new(ctx,
555 (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
559 parseerror(parser, "TODO: bitxor");
564 case opid3('<','<','='):
565 case opid3('>','>','='):
566 parseerror(parser, "TODO: shifts");
570 generated_op += 1; /* INSTR_OR */
572 generated_op += INSTR_AND;
573 if (NotSameType(TYPE_FLOAT)) {
574 parseerror(parser, "type error: cannot apply logical operation on types %s and %s",
575 type_name[exprs[0]->expression.vtype],
576 type_name[exprs[1]->expression.vtype]);
577 parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
578 parseerror(parser, "TODO: optional early out");
581 if (opts_standard == COMPILER_GMQCC)
582 printf("TODO: early out logic\n");
583 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
587 generated_op += 1; /* INSTR_GT */
589 generated_op += 1; /* INSTR_LT */
590 case opid2('>', '='):
591 generated_op += 1; /* INSTR_GE */
592 case opid2('<', '='):
593 generated_op += INSTR_LE;
594 if (NotSameType(TYPE_FLOAT)) {
595 parseerror(parser, "type error: cannot compare types %s and %s",
596 type_name[exprs[0]->expression.vtype],
597 type_name[exprs[1]->expression.vtype]);
600 out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
602 case opid2('!', '='):
603 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
604 parseerror(parser, "type error: cannot compare types %s and %s",
605 type_name[exprs[0]->expression.vtype],
606 type_name[exprs[1]->expression.vtype]);
609 out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
611 case opid2('=', '='):
612 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
613 parseerror(parser, "type error: cannot compare types %s and %s",
614 type_name[exprs[0]->expression.vtype],
615 type_name[exprs[1]->expression.vtype]);
618 out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
622 if (ast_istype(exprs[0], ast_entfield))
623 assignop = type_storep_instr[exprs[0]->expression.vtype];
625 assignop = type_store_instr[exprs[0]->expression.vtype];
626 out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
629 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
630 parseerror(parser, "Cannot add type %s and %s",
631 type_name[exprs[0]->expression.vtype],
632 type_name[exprs[1]->expression.vtype]);
635 if (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) {
636 parseerror(parser, "type error: %s - %s not defined",
637 type_name[exprs[0]->expression.vtype],
638 type_name[exprs[1]->expression.vtype]);
641 switch (exprs[0]->expression.vtype) {
643 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
646 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
649 parseerror(parser, "type error: cannot add type %s to %s",
650 type_name[exprs[0]->expression.vtype],
651 type_name[exprs[1]->expression.vtype]);
659 parseerror(parser, "failed to apply operand %s", op->op);
663 DEBUGSHUNTDO(printf("applied %s\n", op->op));
664 sy->out[sy->out_count++] = syexp(ctx, out);
668 static bool parser_close_call(parser_t *parser, shunt *sy)
670 /* was a function call */
678 fid = sy->ops[sy->ops_count].off;
680 /* out[fid] is the function
681 * everything above is parameters...
683 * 1 params = ast_expression
687 if (sy->out_count < 1 || sy->out_count <= fid) {
688 parseerror(parser, "internal error: function call needs function and parameter list...");
692 fun = sy->out[fid].out;
694 call = ast_call_new(sy->ops[sy->ops_count].ctx, fun);
696 parseerror(parser, "out of memory");
700 if (fid+1 == sy->out_count) {
703 } else if (fid+2 == sy->out_count) {
706 params = sy->out[sy->out_count].block;
710 if (!ast_call_params_add(call, sy->out[sy->out_count].out)) {
711 ast_delete(sy->out[sy->out_count].out);
712 parseerror(parser, "out of memory");
716 paramcount = params->exprs_count;
717 MEM_VECTOR_MOVE(params, exprs, call, params);
721 parseerror(parser, "invalid function call");
725 /* overwrite fid, the function, with a call */
726 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
728 if (fun->expression.vtype != TYPE_FUNCTION) {
729 parseerror(parser, "not a function");
733 if (!fun->expression.next) {
734 parseerror(parser, "could not determine function return type");
737 if (fun->expression.params_count != paramcount) {
738 parseerror(parser, "expected %i parameters, got %i", (int)fun->expression.params_count, paramcount);
746 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
748 if (!sy->ops_count) {
749 parseerror(parser, "unmatched closing paren");
752 if (sy->ops[sy->ops_count-1].paren == 1) {
753 parseerror(parser, "empty parenthesis expression");
756 while (sy->ops_count) {
757 if (sy->ops[sy->ops_count-1].paren == 'f') {
758 if (!parser_close_call(parser, sy))
762 if (sy->ops[sy->ops_count-1].paren == 1) {
764 return !functions_only;
766 if (!parser_sy_pop(parser, sy))
772 static ast_expression* parser_expression_leave(parser_t *parser)
774 ast_expression *expr = NULL;
777 bool gotmemberof = false;
779 /* count the parens because an if starts with one, so the
780 * end of a condition is an unmatched closing paren
784 MEM_VECTOR_INIT(&sy, out);
785 MEM_VECTOR_INIT(&sy, ops);
792 parser->memberof = 0;
795 bool nextwant = true;
796 if (parser->tok == TOKEN_IDENT)
800 if (opts_standard == COMPILER_GMQCC)
802 if (parser->memberof == TYPE_ENTITY)
803 var = parser_find_field(parser, parser_tokval(parser));
804 else if (parser->memberof == TYPE_VECTOR)
806 parseerror(parser, "TODO: implement effective vector member access");
809 else if (parser->memberof) {
810 parseerror(parser, "namespace for member not found");
814 var = parser_find_var(parser, parser_tokval(parser));
816 var = parser_find_var(parser, parser_tokval(parser));
818 var = parser_find_field(parser, parser_tokval(parser));
821 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
824 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), var))) {
825 parseerror(parser, "out of memory");
828 DEBUGSHUNTDO(printf("push %s\n", parser_tokval(parser)));
830 else if (parser->tok == TOKEN_FLOATCONST) {
831 ast_value *val = parser_const_float(parser, (parser_token(parser)->constval.f));
834 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
835 parseerror(parser, "out of memory");
838 DEBUGSHUNTDO(printf("push %g\n", parser_token(parser)->constval.f));
840 else if (parser->tok == TOKEN_INTCONST) {
841 ast_value *val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
844 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
845 parseerror(parser, "out of memory");
848 DEBUGSHUNTDO(printf("push %i\n", parser_token(parser)->constval.i));
850 else if (parser->tok == TOKEN_STRINGCONST) {
851 ast_value *val = parser_const_string(parser, parser_tokval(parser));
854 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
855 parseerror(parser, "out of memory");
858 DEBUGSHUNTDO(printf("push string\n"));
860 else if (parser->tok == TOKEN_VECTORCONST) {
861 ast_value *val = parser_const_vector(parser, parser_token(parser)->constval.v);
864 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
865 parseerror(parser, "out of memory");
868 DEBUGSHUNTDO(printf("push '%g %g %g'\n",
869 parser_token(parser)->constval.v.x,
870 parser_token(parser)->constval.v.y,
871 parser_token(parser)->constval.v.z));
873 else if (parser->tok == '(') {
875 nextwant = false; /* not expecting an operator next */
876 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1, 0))) {
877 parseerror(parser, "out of memory");
880 DEBUGSHUNTDO(printf("push (\n"));
882 else if (parser->tok == ')') {
883 DEBUGSHUNTDO(printf("do[nop] )\n"));
887 /* allowed for function calls */
888 if (!parser_close_paren(parser, &sy, true))
892 /* TODO: prefix operators */
893 parseerror(parser, "expected statement");
897 parser->lex->flags.noops = !wantop;
899 bool nextwant = false;
900 if (parser->tok == '(') {
901 DEBUGSHUNTDO(printf("push (\n"));
903 /* we expected an operator, this is the function-call operator */
904 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f', sy.out_count-1))) {
905 parseerror(parser, "out of memory");
909 else if (parser->tok == ')') {
910 DEBUGSHUNTDO(printf("do[op] )\n"));
914 /* we do expect an operator next */
915 /* closing an opening paren */
916 if (!parser_close_paren(parser, &sy, false))
920 else if (parser->tok != TOKEN_OPERATOR) {
921 parseerror(parser, "expected operator or end of statement");
925 /* classify the operator */
926 /* TODO: suffix operators */
928 const oper_info *olast = NULL;
930 for (o = 0; o < operator_count; ++o) {
931 if (!(operators[o].flags & OP_PREFIX) &&
932 !(operators[o].flags & OP_SUFFIX) && /* remove this */
933 !strcmp(parser_tokval(parser), operators[o].op))
938 if (o == operator_count) {
939 /* no operator found... must be the end of the statement */
942 /* found an operator */
944 if (op->id == opid1('.')) {
945 /* for gmqcc standard: open up the namespace of the previous type */
946 ast_expression *prevex = sy.out[sy.out_count-1].out;
948 parseerror(parser, "unexpected member operator");
951 if (prevex->expression.vtype == TYPE_ENTITY)
952 parser->memberof = TYPE_ENTITY;
953 else if (prevex->expression.vtype == TYPE_VECTOR)
954 parser->memberof = TYPE_VECTOR;
956 parseerror(parser, "type error: type has no members");
962 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
963 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
966 (op->prec < olast->prec) ||
967 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
969 if (!parser_sy_pop(parser, &sy))
971 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
972 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
977 DEBUGSHUNTDO(printf("push operator %s\n", op->op));
978 if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
982 parser->lex->flags.noops = !wantop;
984 if (!parser_next(parser)) {
987 if (parser->tok == ';') {
992 while (sy.ops_count) {
993 if (!parser_sy_pop(parser, &sy))
997 parser->lex->flags.noops = true;
999 parseerror(parser, "empty expression");
1002 expr = sy.out[0].out;
1003 MEM_VECTOR_CLEAR(&sy, out);
1004 MEM_VECTOR_CLEAR(&sy, ops);
1005 DEBUGSHUNTDO(printf("shut done\n"));
1009 parser->lex->flags.noops = true;
1010 MEM_VECTOR_CLEAR(&sy, out);
1011 MEM_VECTOR_CLEAR(&sy, ops);
1015 static ast_expression* parser_expression(parser_t *parser)
1017 ast_expression *e = parser_expression_leave(parser);
1020 if (!parser_next(parser)) {
1027 static bool parser_parse_if(parser_t *parser, ast_block *block, ast_expression **out)
1030 ast_expression *cond, *ontrue, *onfalse = NULL;
1032 lex_ctx ctx = parser_ctx(parser);
1034 /* skip the 'if' and check for opening paren */
1035 if (!parser_next(parser) || parser->tok != '(') {
1036 parseerror(parser, "expected 'if' condition in parenthesis");
1039 /* parse into the expression */
1040 if (!parser_next(parser)) {
1041 parseerror(parser, "expected 'if' condition after opening paren");
1044 /* parse the condition */
1045 cond = parser_expression_leave(parser);
1049 if (parser->tok != ')') {
1050 parseerror(parser, "expected closing paren after 'if' condition");
1054 /* parse into the 'then' branch */
1055 if (!parser_next(parser)) {
1056 parseerror(parser, "expected statement for on-true branch of 'if'");
1060 ontrue = parser_parse_statement_or_block(parser);
1065 /* check for an else */
1066 if (!strcmp(parser_tokval(parser), "else")) {
1067 /* parse into the 'else' branch */
1068 if (!parser_next(parser)) {
1069 parseerror(parser, "expected on-false branch after 'else'");
1074 onfalse = parser_parse_statement_or_block(parser);
1082 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
1083 *out = (ast_expression*)ifthen;
1087 static bool parser_parse_while(parser_t *parser, ast_block *block, ast_expression **out)
1090 ast_expression *cond, *ontrue;
1092 lex_ctx ctx = parser_ctx(parser);
1094 /* skip the 'while' and check for opening paren */
1095 if (!parser_next(parser) || parser->tok != '(') {
1096 parseerror(parser, "expected 'while' condition in parenthesis");
1099 /* parse into the expression */
1100 if (!parser_next(parser)) {
1101 parseerror(parser, "expected 'while' condition after opening paren");
1104 /* parse the condition */
1105 cond = parser_expression_leave(parser);
1109 if (parser->tok != ')') {
1110 parseerror(parser, "expected closing paren after 'while' condition");
1114 /* parse into the 'then' branch */
1115 if (!parser_next(parser)) {
1116 parseerror(parser, "expected while-loop body");
1120 ontrue = parser_parse_statement_or_block(parser);
1126 aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
1127 *out = (ast_expression*)aloop;
1131 static bool parser_parse_for(parser_t *parser, ast_block *block, ast_expression **out)
1134 ast_expression *initexpr, *cond, *increment, *ontrue;
1135 size_t oldblocklocal;
1137 lex_ctx ctx = parser_ctx(parser);
1139 oldblocklocal = parser->blocklocal;
1140 parser->blocklocal = parser->locals_count;
1147 /* skip the 'while' and check for opening paren */
1148 if (!parser_next(parser) || parser->tok != '(') {
1149 parseerror(parser, "expected 'for' expressions in parenthesis");
1152 /* parse into the expression */
1153 if (!parser_next(parser)) {
1154 parseerror(parser, "expected 'for' initializer after opening paren");
1158 if (parser->tok == TOKEN_TYPENAME) {
1159 if (opts_standard != COMPILER_GMQCC) {
1160 if (parsewarning(parser, WARN_EXTENSIONS,
1161 "current standard does not allow variable declarations in for-loop initializers"))
1165 parseerror(parser, "TODO: assignment of new variables to be non-const");
1167 if (!parser_variable(parser, block))
1170 else if (parser->tok != ';')
1172 initexpr = parser_expression_leave(parser);
1177 /* move on to condition */
1178 if (parser->tok != ';') {
1179 parseerror(parser, "expected semicolon after for-loop initializer");
1182 if (!parser_next(parser)) {
1183 parseerror(parser, "expected for-loop condition");
1187 /* parse the condition */
1188 if (parser->tok != ';') {
1189 printf("going cond!\n");
1190 cond = parser_expression_leave(parser);
1193 printf("going cond!\n");
1196 /* move on to incrementor */
1197 if (parser->tok != ';') {
1198 parseerror(parser, "expected semicolon after for-loop initializer");
1201 if (!parser_next(parser)) {
1202 parseerror(parser, "expected for-loop condition");
1206 /* parse the incrementor */
1207 if (parser->tok != ')') {
1208 increment = parser_expression_leave(parser);
1214 if (parser->tok != ')') {
1215 parseerror(parser, "expected closing paren after 'for-loop' incrementor");
1218 /* parse into the 'then' branch */
1219 if (!parser_next(parser)) {
1220 parseerror(parser, "expected for-loop body");
1223 ontrue = parser_parse_statement_or_block(parser);
1228 aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
1229 *out = (ast_expression*)aloop;
1231 while (parser->locals_count > parser->blocklocal)
1232 parser_pop_local(parser);
1233 parser->blocklocal = oldblocklocal;
1236 if (initexpr) ast_delete(initexpr);
1237 if (cond) ast_delete(cond);
1238 if (increment) ast_delete(increment);
1239 while (parser->locals_count > parser->blocklocal)
1240 parser_pop_local(parser);
1241 parser->blocklocal = oldblocklocal;
1245 static bool parser_parse_statement(parser_t *parser, ast_block *block, ast_expression **out)
1247 if (parser->tok == TOKEN_TYPENAME)
1249 /* local variable */
1251 parseerror(parser, "cannot declare a variable from here");
1254 if (!parser_variable(parser, block))
1259 else if (parser->tok == TOKEN_KEYWORD)
1261 if (!strcmp(parser_tokval(parser), "return"))
1263 ast_expression *exp = NULL;
1264 ast_return *ret = NULL;
1265 ast_value *expected = parser->function->vtype;
1267 if (!parser_next(parser)) {
1268 parseerror(parser, "expected return expression");
1272 if (parser->tok != ';') {
1273 exp = parser_expression(parser);
1277 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
1278 parseerror(parser, "return with invalid expression");
1281 ret = ast_return_new(exp->expression.node.context, exp);
1287 *out = (ast_expression*)ret;
1288 } else if (!parser_next(parser)) {
1289 parseerror(parser, "expected semicolon");
1290 if (expected->expression.next->expression.vtype != TYPE_VOID) {
1291 parseerror(parser, "return without value");
1296 else if (!strcmp(parser_tokval(parser), "if"))
1298 return parser_parse_if(parser, block, out);
1300 else if (!strcmp(parser_tokval(parser), "while"))
1302 return parser_parse_while(parser, block, out);
1304 else if (!strcmp(parser_tokval(parser), "for"))
1306 return parser_parse_for(parser, block, out);
1308 parseerror(parser, "Unexpected keyword");
1311 else if (parser->tok == '{')
1314 inner = parser_parse_block(parser);
1317 *out = (ast_expression*)inner;
1322 ast_expression *exp = parser_expression(parser);
1330 static void parser_pop_local(parser_t *parser)
1332 parser->locals_count--;
1333 mem_d(parser->locals[parser->locals_count].name);
1336 static ast_block* parser_parse_block(parser_t *parser)
1338 size_t oldblocklocal;
1339 ast_block *block = NULL;
1341 oldblocklocal = parser->blocklocal;
1342 parser->blocklocal = parser->locals_count;
1344 if (!parser_next(parser)) { /* skip the '{' */
1345 parseerror(parser, "expected function body");
1349 block = ast_block_new(parser_ctx(parser));
1351 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
1353 ast_expression *expr;
1354 if (parser->tok == '}')
1357 if (!parser_parse_statement(parser, block, &expr)) {
1358 ast_block_delete(block);
1364 if (!ast_block_exprs_add(block, expr)) {
1366 ast_block_delete(block);
1372 if (parser->tok != '}') {
1373 ast_block_delete(block);
1376 (void)parser_next(parser);
1380 while (parser->locals_count > parser->blocklocal)
1381 parser_pop_local(parser);
1382 parser->blocklocal = oldblocklocal;
1383 /* unroll the local vector */
1387 static ast_expression* parser_parse_statement_or_block(parser_t *parser)
1389 ast_expression *expr;
1390 if (parser->tok == '{')
1391 return (ast_expression*)parser_parse_block(parser);
1392 if (!parser_parse_statement(parser, NULL, &expr))
1397 static bool parser_variable(parser_t *parser, ast_block *localblock)
1399 bool isfunc = false;
1400 ast_function *func = NULL;
1405 int basetype = parser_token(parser)->constval.t;
1409 if (!parser_next(parser)) { /* skip basetype or comma */
1410 parseerror(parser, "expected variable declaration");
1416 ctx = parser_ctx(parser);
1417 var = parser_parse_type(parser, basetype, &isfunc);
1422 if (parser->tok != TOKEN_IDENT) {
1423 parseerror(parser, "expected variable name\n");
1427 if (!localblock && parser_find_global(parser, parser_tokval(parser))) {
1428 ast_value_delete(var);
1429 parseerror(parser, "global already exists: %s\n", parser_tokval(parser));
1433 if (localblock && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
1434 ast_value_delete(var);
1435 parseerror(parser, "local variable already exists: %s\n", parser_tokval(parser));
1439 if (!ast_value_set_name(var, parser_tokval(parser))) {
1440 parseerror(parser, "failed to set variable name\n");
1441 ast_value_delete(var);
1446 /* a function was defined */
1449 /* turn var into a value of TYPE_FUNCTION, with the old var
1452 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
1453 func = ast_function_new(ctx, var->name, fval);
1454 if (!fval || !func) {
1455 ast_value_delete(var);
1456 if (fval) ast_value_delete(fval);
1457 if (func) ast_function_delete(func);
1461 fval->expression.next = (ast_expression*)var;
1462 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
1464 if (!parser_t_functions_add(parser, func)) {
1465 ast_value_delete(var);
1466 if (fval) ast_value_delete(fval);
1467 if (func) ast_function_delete(func);
1474 varent.name = util_strdup(var->name);
1475 varent.var = (ast_expression*)var;
1476 if (var->expression.vtype == TYPE_VECTOR)
1478 size_t len = strlen(varent.name);
1479 varentry_t vx, vy, vz;
1480 vx.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 0);
1481 vy.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 1);
1482 vz.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 2);
1483 vx.name = mem_a(len+3);
1484 vy.name = mem_a(len+3);
1485 vz.name = mem_a(len+3);
1486 strcpy(vx.name, varent.name);
1487 strcpy(vy.name, varent.name);
1488 strcpy(vz.name, varent.name);
1489 vx.name[len] = vy.name[len] = vz.name[len] = '_';
1490 vx.name[len+1] = 'x';
1491 vy.name[len+1] = 'y';
1492 vz.name[len+1] = 'z';
1493 vx.name[len+2] = vy.name[len+2] = vz.name[len+2] = 0;
1496 (void)!parser_t_globals_add(parser, varent);
1497 (void)!parser_t_globals_add(parser, vx);
1498 (void)!parser_t_globals_add(parser, vy);
1499 (void)!parser_t_globals_add(parser, vz);
1501 (void)!parser_t_locals_add(parser, varent);
1502 (void)!parser_t_locals_add(parser, vx);
1503 (void)!parser_t_locals_add(parser, vy);
1504 (void)!parser_t_locals_add(parser, vz);
1509 if ( (!localblock && !parser_t_globals_add(parser, varent)) ||
1510 ( localblock && !parser_t_locals_add(parser, varent)) )
1512 ast_value_delete(var);
1516 if (localblock && !ast_block_locals_add(localblock, var))
1518 parser_pop_local(parser);
1519 ast_value_delete(var);
1523 if (!parser_next(parser)) {
1524 ast_value_delete(var);
1528 if (parser->tok == ';') {
1529 if (!parser_next(parser))
1530 return parser->tok == TOKEN_EOF;
1534 if (parser->tok == ',') {
1539 if (parser->tok != '=') {
1540 parseerror(parser, "expected '=' or ';'");
1544 if (!parser_next(parser))
1547 if (parser->tok == '#') {
1549 parseerror(parser, "cannot declare builtins within functions");
1552 if (!isfunc || !func) {
1553 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
1556 if (!parser_next(parser)) {
1557 parseerror(parser, "expected builtin number");
1560 if (parser->tok != TOKEN_INTCONST) {
1561 parseerror(parser, "builtin number must be an integer constant");
1564 if (parser_token(parser)->constval.i <= 0) {
1565 parseerror(parser, "builtin number must be positive integer greater than zero");
1569 func->builtin = -parser_token(parser)->constval.i;
1570 } else if (parser->tok == '{') {
1573 ast_function *old = parser->function;
1576 parseerror(parser, "cannot declare functions within functions");
1580 parser->function = func;
1581 block = parser_parse_block(parser);
1582 parser->function = old;
1587 if (!ast_function_blocks_add(func, block)) {
1588 ast_block_delete(block);
1593 parseerror(parser, "TODO, const assignment");
1596 if (!parser_next(parser))
1599 if (parser->tok == ',') {
1604 if (parser->tok != ';') {
1605 parseerror(parser, "expected semicolon");
1609 (void)parser_next(parser);
1615 static bool parser_do(parser_t *parser)
1617 if (parser->tok == TOKEN_TYPENAME)
1619 return parser_variable(parser, NULL);
1621 else if (parser->tok == TOKEN_KEYWORD)
1623 /* handle 'var' and 'const' */
1626 else if (parser->tok == '.')
1630 bool isfunc = false;
1632 lex_ctx ctx = parser_ctx(parser);
1635 /* entity-member declaration */
1636 if (!parser_next(parser) || parser->tok != TOKEN_TYPENAME) {
1637 parseerror(parser, "expected member variable definition");
1641 /* remember the base/return type */
1642 basetype = parser_token(parser)->constval.t;
1644 /* parse into the declaration */
1645 if (!parser_next(parser)) {
1646 parseerror(parser, "expected field def");
1650 /* parse the field type fully */
1651 var = parser_parse_type(parser, basetype, &isfunc);
1655 /* now the field name */
1656 if (parser->tok != TOKEN_IDENT) {
1657 parseerror(parser, "expected field name");
1662 /* check for an existing field
1663 * in original qc we also have to check for an existing
1664 * global named like the field
1666 if (opts_standard == COMPILER_QCC) {
1667 if (parser_find_global(parser, parser_tokval(parser))) {
1668 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
1673 if (parser_find_field(parser, parser_tokval(parser))) {
1674 parseerror(parser, "field %s already exists", parser_tokval(parser));
1679 /* if it was a function, turn it into a function */
1682 /* turn var into a value of TYPE_FUNCTION, with the old var
1685 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
1687 ast_value_delete(var);
1688 ast_value_delete(fval);
1692 fval->expression.next = (ast_expression*)var;
1693 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
1698 /* turn it into a field */
1699 fld = ast_value_new(ctx, parser_tokval(parser), TYPE_FIELD);
1700 fld->expression.next = (ast_expression*)var;
1702 varent.var = (ast_expression*)fld;
1703 if (var->expression.vtype == TYPE_VECTOR)
1705 /* create _x, _y and _z fields as well */
1706 parseerror(parser, "TODO: vector field members (_x,_y,_z)");
1711 varent.name = util_strdup(fld->name);
1712 (void)!parser_t_fields_add(parser, varent);
1714 /* end with a semicolon */
1715 if (!parser_next(parser) || parser->tok != ';') {
1716 parseerror(parser, "semicolon expected");
1720 /* skip the semicolon */
1721 if (!parser_next(parser))
1722 return parser->tok == TOKEN_EOF;
1728 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
1734 static parser_t *parser;
1738 parser = (parser_t*)mem_a(sizeof(parser_t));
1742 memset(parser, 0, sizeof(parser));
1744 MEM_VECTOR_INIT(parser, globals);
1745 MEM_VECTOR_INIT(parser, locals);
1749 bool parser_compile(const char *filename)
1751 parser->lex = lex_open(filename);
1753 printf("failed to open file \"%s\"\n", filename);
1757 /* initial lexer/parser state */
1758 parser->lex->flags.noops = true;
1760 if (parser_next(parser))
1762 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
1764 if (!parser_do(parser)) {
1765 if (parser->tok == TOKEN_EOF)
1766 parseerror(parser, "unexpected eof");
1768 parseerror(parser, "parse error\n");
1769 lex_close(parser->lex);
1776 lex_close(parser->lex);
1778 return !parser->errors;
1781 void parser_cleanup()
1784 for (i = 0; i < parser->functions_count; ++i) {
1785 ast_delete(parser->functions[i]);
1787 for (i = 0; i < parser->imm_vector_count; ++i) {
1788 ast_delete(parser->imm_vector[i]);
1790 for (i = 0; i < parser->imm_string_count; ++i) {
1791 ast_delete(parser->imm_string[i]);
1793 for (i = 0; i < parser->imm_float_count; ++i) {
1794 ast_delete(parser->imm_float[i]);
1796 for (i = 0; i < parser->globals_count; ++i) {
1797 ast_delete(parser->globals[i].var);
1798 mem_d(parser->globals[i].name);
1800 MEM_VECTOR_CLEAR(parser, globals);
1805 bool parser_finish(const char *output)
1810 if (!parser->errors)
1812 ir = ir_builder_new("gmqcc_out");
1814 printf("failed to allocate builder\n");
1818 for (i = 0; i < parser->imm_float_count; ++i) {
1819 if (!ast_global_codegen(parser->imm_float[i], ir)) {
1820 printf("failed to generate global %s\n", parser->imm_float[i]->name);
1821 ir_builder_delete(ir);
1825 for (i = 0; i < parser->imm_string_count; ++i) {
1826 if (!ast_global_codegen(parser->imm_string[i], ir)) {
1827 printf("failed to generate global %s\n", parser->imm_string[i]->name);
1828 ir_builder_delete(ir);
1832 for (i = 0; i < parser->imm_vector_count; ++i) {
1833 if (!ast_global_codegen(parser->imm_vector[i], ir)) {
1834 printf("failed to generate global %s\n", parser->imm_vector[i]->name);
1835 ir_builder_delete(ir);
1839 for (i = 0; i < parser->fields_count; ++i) {
1842 if (!ast_istype(parser->fields[i].var, ast_value))
1844 field = (ast_value*)parser->fields[i].var;
1845 isconst = field->isconst;
1846 field->isconst = false;
1847 if (!ast_global_codegen((ast_value*)field, ir)) {
1848 printf("failed to generate field %s\n", field->name);
1849 ir_builder_delete(ir);
1854 ast_expression *subtype;
1855 field->isconst = true;
1856 subtype = field->expression.next;
1857 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
1858 if (subtype->expression.vtype == TYPE_FIELD)
1859 ifld->fieldtype = subtype->expression.next->expression.vtype;
1860 else if (subtype->expression.vtype == TYPE_FUNCTION)
1861 ifld->outtype = subtype->expression.next->expression.vtype;
1862 (void)!ir_value_set_field(field->ir_v, ifld);
1865 for (i = 0; i < parser->globals_count; ++i) {
1866 if (!ast_istype(parser->globals[i].var, ast_value))
1868 if (!ast_global_codegen((ast_value*)(parser->globals[i].var), ir)) {
1869 printf("failed to generate global %s\n", parser->globals[i].name);
1870 ir_builder_delete(ir);
1874 for (i = 0; i < parser->functions_count; ++i) {
1875 if (!ast_function_codegen(parser->functions[i], ir)) {
1876 printf("failed to generate function %s\n", parser->functions[i]->name);
1877 ir_builder_delete(ir);
1880 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
1881 printf("failed to finalize function %s\n", parser->functions[i]->name);
1882 ir_builder_delete(ir);
1887 ir_builder_dump(ir, printf);
1889 if (!ir_builder_generate(ir, output)) {
1890 printf("*** failed to generate output file\n");
1891 ir_builder_delete(ir);
1895 ir_builder_delete(ir);
1899 printf("*** there were compile errors\n");