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 void parseerror(parser_t *parser, const char *fmt, ...)
51 printf("error %s:%lu: ", parser->lex->tok->ctx.file, (unsigned long)parser->lex->tok->ctx.line);
62 bool parser_next(parser_t *parser)
64 /* lex_do kills the previous token */
65 parser->tok = lex_do(parser->lex);
66 if (parser->tok == TOKEN_EOF || parser->tok >= TOKEN_ERROR)
71 /* lift a token out of the parser so it's not destroyed by parser_next */
72 token *parser_lift(parser_t *parser)
74 token *tok = parser->lex->tok;
75 parser->lex->tok = NULL;
79 #define parser_tokval(p) (p->lex->tok->value)
80 #define parser_token(p) (p->lex->tok)
81 #define parser_ctx(p) (p->lex->tok->ctx)
83 ast_value* parser_const_float(parser_t *parser, double d)
87 for (i = 0; i < parser->imm_float_count; ++i) {
88 if (parser->imm_float[i]->constval.vfloat == d)
89 return parser->imm_float[i];
91 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
93 out->constval.vfloat = d;
94 if (!parser_t_imm_float_add(parser, out)) {
95 ast_value_delete(out);
101 ast_value* parser_const_string(parser_t *parser, const char *str)
105 for (i = 0; i < parser->imm_string_count; ++i) {
106 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
107 return parser->imm_string[i];
109 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
111 out->constval.vstring = util_strdup(str);
112 if (!parser_t_imm_string_add(parser, out)) {
113 ast_value_delete(out);
119 ast_value* parser_const_vector(parser_t *parser, vector v)
123 for (i = 0; i < parser->imm_vector_count; ++i) {
124 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
125 return parser->imm_vector[i];
127 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
129 out->constval.vvec = v;
130 if (!parser_t_imm_vector_add(parser, out)) {
131 ast_value_delete(out);
137 ast_expression* parser_find_field(parser_t *parser, const char *name)
140 for (i = 0; i < parser->fields_count; ++i) {
141 if (!strcmp(parser->fields[i].name, name))
142 return parser->fields[i].var;
147 ast_expression* parser_find_global(parser_t *parser, const char *name)
150 for (i = 0; i < parser->globals_count; ++i) {
151 if (!strcmp(parser->globals[i].name, name))
152 return parser->globals[i].var;
157 ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto)
161 for (i = parser->locals_count; i > upto;) {
163 if (!strcmp(parser->locals[i].name, name))
164 return parser->locals[i].var;
166 fun = parser->function->vtype;
167 for (i = 0; i < fun->expression.params_count; ++i) {
168 if (!strcmp(fun->expression.params[i]->name, name))
169 return (ast_expression*)(fun->expression.params[i]);
174 ast_expression* parser_find_var(parser_t *parser, const char *name)
177 v = parser_find_local(parser, name, 0);
178 if (!v) v = parser_find_global(parser, name);
183 MEM_VECTOR_MAKE(ast_value*, p);
185 MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
187 static ast_value *parser_parse_type(parser_t *parser, int basetype, bool *isfunc)
191 lex_ctx ctx = parser_ctx(parser);
192 int vtype = basetype;
196 MEM_VECTOR_INIT(¶ms, p);
200 if (parser->tok == '(') {
206 if (!parser_next(parser))
209 if (parser->tok == ')')
212 temptype = parser_token(parser)->constval.t;
213 if (!parser_next(parser))
216 param = parser_parse_type(parser, temptype, &dummy);
222 if (parser->tok == TOKEN_IDENT) {
223 /* named parameter */
224 if (!ast_value_set_name(param, parser_tokval(parser)))
226 if (!parser_next(parser))
230 if (!paramlist_t_p_add(¶ms, param)) {
231 parseerror(parser, "Out of memory while parsing typename");
235 if (parser->tok == ',')
237 if (parser->tok == ')')
239 parseerror(parser, "Unexpected token");
242 if (!parser_next(parser))
246 var = ast_value_new(ctx, "<unnamed>", vtype);
249 MEM_VECTOR_MOVE(¶ms, p, &var->expression, params);
252 for (i = 0; i < params.p_count; ++i)
253 ast_value_delete(params.p[i]);
254 MEM_VECTOR_CLEAR(¶ms, p);
260 size_t etype; /* 0 = expression, others are operators */
264 ast_block *block; /* for commas and function calls */
269 MEM_VECTOR_MAKE(sy_elem, out);
270 MEM_VECTOR_MAKE(sy_elem, ops);
272 MEM_VEC_FUNCTIONS(shunt, sy_elem, out)
273 MEM_VEC_FUNCTIONS(shunt, sy_elem, ops)
275 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
285 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
288 e.out = (ast_expression*)v;
295 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
297 e.etype = 1 + (op - operators);
305 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
316 static bool parser_sy_pop(parser_t *parser, shunt *sy)
320 ast_expression *out = NULL;
321 ast_expression *exprs[3];
322 ast_block *blocks[3];
325 if (!sy->ops_count) {
326 parseerror(parser, "internal error: missing operator");
330 if (sy->ops[sy->ops_count-1].paren) {
331 parseerror(parser, "unmatched parenthesis");
335 op = &operators[sy->ops[sy->ops_count-1].etype - 1];
336 ctx = sy->ops[sy->ops_count-1].ctx;
338 if (sy->out_count < op->operands) {
339 parseerror(parser, "internal error: not enough operands: %i", sy->out_count);
345 sy->out_count -= op->operands;
346 for (i = 0; i < op->operands; ++i) {
347 exprs[i] = sy->out[sy->out_count+i].out;
348 blocks[i] = sy->out[sy->out_count+i].block;
351 if (blocks[0] && !blocks[0]->exprs_count && op->id != opid1(',')) {
352 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
359 parseerror(parser, "internal error: unhandled operand");
364 if (!ast_block_exprs_add(blocks[0], exprs[1]))
367 blocks[0] = ast_block_new(ctx);
368 if (!ast_block_exprs_add(blocks[0], exprs[0]) ||
369 !ast_block_exprs_add(blocks[0], exprs[1]))
374 if (!ast_block_set_type(blocks[0], exprs[1]))
377 sy->out[sy->out_count++] = syblock(ctx, blocks[0]);
381 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
382 parseerror(parser, "Cannot add type %s and %s",
383 type_name[exprs[0]->expression.vtype],
384 type_name[exprs[1]->expression.vtype]);
387 switch (exprs[0]->expression.vtype) {
389 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
392 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
395 parseerror(parser, "Cannot add type %s and %s",
396 type_name[exprs[0]->expression.vtype],
397 type_name[exprs[1]->expression.vtype]);
402 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
403 parseerror(parser, "Cannot subtract type %s from %s",
404 type_name[exprs[1]->expression.vtype],
405 type_name[exprs[0]->expression.vtype]);
408 switch (exprs[0]->expression.vtype) {
410 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
413 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
416 parseerror(parser, "Cannot add type %s from %s",
417 type_name[exprs[1]->expression.vtype],
418 type_name[exprs[0]->expression.vtype]);
423 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
424 exprs[0]->expression.vtype != TYPE_VECTOR &&
425 exprs[0]->expression.vtype != TYPE_FLOAT &&
426 exprs[1]->expression.vtype != TYPE_VECTOR &&
427 exprs[1]->expression.vtype != TYPE_FLOAT)
429 parseerror(parser, "Cannot multiply type %s from %s",
430 type_name[exprs[1]->expression.vtype],
431 type_name[exprs[0]->expression.vtype]);
434 switch (exprs[0]->expression.vtype) {
436 if (exprs[1]->expression.vtype == TYPE_VECTOR)
437 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
439 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
442 if (exprs[1]->expression.vtype == TYPE_FLOAT)
443 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
445 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
448 parseerror(parser, "Cannot add type %s from %s",
449 type_name[exprs[1]->expression.vtype],
450 type_name[exprs[0]->expression.vtype]);
455 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
456 exprs[0]->expression.vtype != TYPE_FLOAT)
458 parseerror(parser, "Cannot divide types %s and %s",
459 type_name[exprs[0]->expression.vtype],
460 type_name[exprs[1]->expression.vtype]);
463 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
468 out = (ast_expression*)ast_store_new(ctx,
469 type_store_instr[exprs[0]->expression.vtype],
475 parseerror(parser, "failed to apply operand %s", op->op);
479 sy->out[sy->out_count++] = syexp(ctx, out);
483 static bool parser_close_call(parser_t *parser, shunt *sy)
485 /* was a function call */
493 fid = sy->ops[sy->ops_count].off;
495 /* out[fid] is the function
496 * everything above is parameters...
498 * 1 params = ast_expression
502 if (sy->out_count < 1 || sy->out_count <= fid) {
503 parseerror(parser, "internal error: function call needs function and parameter list...");
507 fun = sy->out[fid].out;
509 call = ast_call_new(sy->ops[sy->ops_count].ctx, fun);
511 parseerror(parser, "out of memory");
515 if (fid+1 == sy->out_count) {
518 } else if (fid+2 == sy->out_count) {
521 params = sy->out[sy->out_count].block;
525 if (!ast_call_params_add(call, sy->out[sy->out_count].out)) {
526 ast_delete(sy->out[sy->out_count].out);
527 parseerror(parser, "out of memory");
531 paramcount = params->exprs_count;
532 MEM_VECTOR_MOVE(params, exprs, call, params);
536 parseerror(parser, "invalid function call");
540 /* overwrite fid, the function, with a call */
541 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
543 if (fun->expression.vtype != TYPE_FUNCTION) {
544 parseerror(parser, "not a function");
548 if (!fun->expression.next) {
549 parseerror(parser, "could not determine function return type");
552 if (fun->expression.params_count != paramcount) {
553 parseerror(parser, "expected %i parameters, got %i", (int)fun->expression.params_count, paramcount);
561 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
563 if (!sy->ops_count) {
564 parseerror(parser, "unmatched closing paren");
567 if (sy->ops[sy->ops_count-1].paren == 1) {
568 parseerror(parser, "empty parenthesis expression");
571 while (sy->ops_count) {
572 if (sy->ops[sy->ops_count-1].paren == 'f') {
573 if (!parser_close_call(parser, sy))
577 if (sy->ops[sy->ops_count-1].paren == 1) {
579 return !functions_only;
581 if (!parser_sy_pop(parser, sy))
587 static ast_expression* parser_expression(parser_t *parser)
589 ast_expression *expr = NULL;
592 bool gotmemberof = false;
594 /* count the parens because an if starts with one, so the
595 * end of a condition is an unmatched closing paren
599 MEM_VECTOR_INIT(&sy, out);
600 MEM_VECTOR_INIT(&sy, ops);
607 parser->memberof = 0;
610 bool nextwant = true;
611 if (parser->tok == TOKEN_IDENT)
615 if (opts_standard == COMPILER_GMQCC)
617 if (parser->memberof == TYPE_ENTITY)
618 var = parser_find_field(parser, parser_tokval(parser));
619 else if (parser->memberof == TYPE_VECTOR)
621 parseerror(parser, "TODO: implement effective vector member access");
624 else if (parser->memberof) {
625 parseerror(parser, "namespace for member not found");
629 var = parser_find_var(parser, parser_tokval(parser));
631 var = parser_find_var(parser, parser_tokval(parser));
633 var = parser_find_field(parser, parser_tokval(parser));
636 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
639 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), var))) {
640 parseerror(parser, "out of memory");
644 else if (parser->tok == TOKEN_FLOATCONST) {
645 ast_value *val = parser_const_float(parser, (parser_token(parser)->constval.f));
648 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
649 parseerror(parser, "out of memory");
653 else if (parser->tok == TOKEN_INTCONST) {
654 ast_value *val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
657 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
658 parseerror(parser, "out of memory");
662 else if (parser->tok == TOKEN_STRINGCONST) {
663 ast_value *val = parser_const_string(parser, parser_tokval(parser));
666 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
667 parseerror(parser, "out of memory");
671 else if (parser->tok == TOKEN_VECTORCONST) {
672 ast_value *val = parser_const_vector(parser, parser_token(parser)->constval.v);
675 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
676 parseerror(parser, "out of memory");
680 else if (parser->tok == '(') {
682 nextwant = false; /* not expecting an operator next */
683 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1, 0))) {
684 parseerror(parser, "out of memory");
688 else if (parser->tok == ')') {
692 /* allowed for function calls */
693 if (!parser_close_paren(parser, &sy, true))
697 /* TODO: prefix operators */
698 parseerror(parser, "expected statement");
702 parser->lex->flags.noops = !wantop;
704 if (parser->tok == '(') {
706 /* we expected an operator, this is the function-call operator */
707 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f', sy.out_count-1))) {
708 parseerror(parser, "out of memory");
712 else if (parser->tok == ')') {
716 /* we do expect an operator next */
717 /* closing an opening paren */
718 if (!parser_close_paren(parser, &sy, false))
721 else if (parser->tok != TOKEN_OPERATOR) {
722 parseerror(parser, "expected operator or end of statement");
726 /* classify the operator */
727 /* TODO: suffix operators */
729 const oper_info *olast = NULL;
731 for (o = 0; o < operator_count; ++o) {
732 if (!(operators[o].flags & OP_PREFIX) &&
733 !(operators[o].flags & OP_SUFFIX) && /* remove this */
734 !strcmp(parser_tokval(parser), operators[o].op))
739 if (o == operator_count) {
740 /* no operator found... must be the end of the statement */
743 /* found an operator */
745 if (op->id == opid1('.')) {
746 /* for gmqcc standard: open up the namespace of the previous type */
747 ast_expression *prevex = sy.out[sy.out_count-1].out;
749 parseerror(parser, "unexpected member operator");
752 if (prevex->expression.vtype == TYPE_ENTITY)
753 parser->memberof = TYPE_ENTITY;
754 else if (prevex->expression.vtype == TYPE_VECTOR)
755 parser->memberof = TYPE_VECTOR;
757 parseerror(parser, "type error: type has no members");
763 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
764 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
767 (op->prec < olast->prec) ||
768 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
770 if (!parser_sy_pop(parser, &sy))
772 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
773 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
776 if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
780 parser->lex->flags.noops = true;
782 if (!parser_next(parser)) {
785 if (parser->tok == ';') {
789 if (parens >= 0 && !parser_next(parser)) {
790 parseerror(parser, "Unexpected end of file");
794 while (sy.ops_count) {
795 if (!parser_sy_pop(parser, &sy))
799 parser->lex->flags.noops = true;
801 parseerror(parser, "empty expression");
804 expr = sy.out[0].out;
805 MEM_VECTOR_CLEAR(&sy, out);
806 MEM_VECTOR_CLEAR(&sy, ops);
810 parser->lex->flags.noops = true;
811 MEM_VECTOR_CLEAR(&sy, out);
812 MEM_VECTOR_CLEAR(&sy, ops);
816 static bool parser_variable(parser_t *parser, ast_block *localblock);
817 static ast_block* parser_parse_block(parser_t *parser);
818 static ast_expression* parser_parse_statement_or_block(parser_t *parser);
819 static bool parser_parse_statement(parser_t *parser, ast_block *block, ast_expression **out)
821 if (parser->tok == TOKEN_TYPENAME)
825 parseerror(parser, "cannot declare a variable from here");
828 if (!parser_variable(parser, block))
833 else if (parser->tok == TOKEN_KEYWORD)
835 if (!strcmp(parser_tokval(parser), "return"))
837 ast_expression *exp = NULL;
838 ast_return *ret = NULL;
839 ast_value *expected = parser->function->vtype;
841 if (!parser_next(parser)) {
842 parseerror(parser, "expected return expression");
846 if (parser->tok != ';') {
847 exp = parser_expression(parser);
851 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
852 parseerror(parser, "return with invalid expression");
855 ret = ast_return_new(exp->expression.node.context, exp);
861 *out = (ast_expression*)ret;
862 } else if (!parser_next(parser)) {
863 parseerror(parser, "expected semicolon");
864 if (expected->expression.next->expression.vtype != TYPE_VOID) {
865 parseerror(parser, "return without value");
870 else if (!strcmp(parser_tokval(parser), "if"))
873 ast_expression *cond, *ontrue, *onfalse = NULL;
875 lex_ctx ctx = parser_ctx(parser);
877 /* skip the 'if' and check for opening paren */
878 if (!parser_next(parser) || parser->tok != '(') {
879 parseerror(parser, "expected 'if' condition in parenthesis");
882 /* parse into the expression */
883 if (!parser_next(parser)) {
884 parseerror(parser, "expected 'if' condition after opening paren");
887 /* parse the condition */
888 cond = parser_expression(parser);
892 if (parser->tok != ')') {
893 parseerror(parser, "expected closing paren after 'if' condition");
897 /* parse into the 'then' branch */
898 if (!parser_next(parser)) {
899 parseerror(parser, "expected statement for on-true branch of 'if'");
903 ontrue = parser_parse_statement_or_block(parser);
908 /* check for an else */
909 if (!strcmp(parser_tokval(parser), "else")) {
910 /* parse into the 'else' branch */
911 if (!parser_next(parser)) {
912 parseerror(parser, "expected on-false branch after 'else'");
917 onfalse = parser_parse_statement_or_block(parser);
925 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
926 *out = (ast_expression*)ifthen;
929 parseerror(parser, "Unexpected keyword");
932 else if (parser->tok == '{')
935 inner = parser_parse_block(parser);
938 *out = (ast_expression*)inner;
943 ast_expression *exp = parser_expression(parser);
951 static void parser_pop_local(parser_t *parser)
953 parser->locals_count--;
954 mem_d(parser->locals[parser->locals_count].name);
957 static ast_block* parser_parse_block(parser_t *parser)
959 size_t oldblocklocal;
960 ast_block *block = NULL;
962 oldblocklocal = parser->blocklocal;
963 parser->blocklocal = parser->locals_count;
965 if (!parser_next(parser)) { /* skip the '{' */
966 parseerror(parser, "expected function body");
970 block = ast_block_new(parser_ctx(parser));
972 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
974 ast_expression *expr;
975 if (parser->tok == '}')
978 if (!parser_parse_statement(parser, block, &expr)) {
979 ast_block_delete(block);
985 if (!ast_block_exprs_add(block, expr)) {
987 ast_block_delete(block);
993 if (parser->tok != '}') {
994 ast_block_delete(block);
997 (void)parser_next(parser);
1001 while (parser->locals_count > parser->blocklocal)
1002 parser_pop_local(parser);
1003 parser->blocklocal = oldblocklocal;
1004 /* unroll the local vector */
1008 static ast_expression* parser_parse_statement_or_block(parser_t *parser)
1010 ast_expression *expr;
1011 if (parser->tok == '{')
1012 return (ast_expression*)parser_parse_block(parser);
1013 if (!parser_parse_statement(parser, NULL, &expr))
1018 static bool parser_variable(parser_t *parser, ast_block *localblock)
1020 bool isfunc = false;
1021 ast_function *func = NULL;
1026 int basetype = parser_token(parser)->constval.t;
1030 if (!parser_next(parser)) { /* skip basetype or comma */
1031 parseerror(parser, "expected variable declaration");
1037 ctx = parser_ctx(parser);
1038 var = parser_parse_type(parser, basetype, &isfunc);
1043 if (parser->tok != TOKEN_IDENT) {
1044 parseerror(parser, "expected variable name\n");
1048 if (!localblock && parser_find_global(parser, parser_tokval(parser))) {
1049 ast_value_delete(var);
1050 parseerror(parser, "global already exists: %s\n", parser_tokval(parser));
1054 if (localblock && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
1055 ast_value_delete(var);
1056 parseerror(parser, "local variable already exists: %s\n", parser_tokval(parser));
1060 if (!ast_value_set_name(var, parser_tokval(parser))) {
1061 parseerror(parser, "failed to set variable name\n");
1062 ast_value_delete(var);
1067 /* a function was defined */
1070 /* turn var into a value of TYPE_FUNCTION, with the old var
1073 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
1074 func = ast_function_new(ctx, var->name, fval);
1075 if (!fval || !func) {
1076 ast_value_delete(var);
1077 if (fval) ast_value_delete(fval);
1078 if (func) ast_function_delete(func);
1082 fval->expression.next = (ast_expression*)var;
1083 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
1085 if (!parser_t_functions_add(parser, func)) {
1086 ast_value_delete(var);
1087 if (fval) ast_value_delete(fval);
1088 if (func) ast_function_delete(func);
1095 varent.name = util_strdup(var->name);
1096 varent.var = (ast_expression*)var;
1097 if (var->expression.vtype == TYPE_VECTOR)
1099 size_t len = strlen(varent.name);
1100 varentry_t vx, vy, vz;
1101 vx.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 0);
1102 vy.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 1);
1103 vz.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 2);
1104 vx.name = mem_a(len+3);
1105 vy.name = mem_a(len+3);
1106 vz.name = mem_a(len+3);
1107 strcpy(vx.name, varent.name);
1108 strcpy(vy.name, varent.name);
1109 strcpy(vz.name, varent.name);
1110 vx.name[len] = vy.name[len] = vz.name[len] = '_';
1111 vx.name[len+1] = 'x';
1112 vy.name[len+1] = 'y';
1113 vz.name[len+1] = 'z';
1114 vx.name[len+2] = vy.name[len+2] = vz.name[len+2] = 0;
1117 (void)!parser_t_globals_add(parser, varent);
1118 (void)!parser_t_globals_add(parser, vx);
1119 (void)!parser_t_globals_add(parser, vy);
1120 (void)!parser_t_globals_add(parser, vz);
1122 (void)!parser_t_locals_add(parser, varent);
1123 (void)!parser_t_locals_add(parser, vx);
1124 (void)!parser_t_locals_add(parser, vy);
1125 (void)!parser_t_locals_add(parser, vz);
1130 if ( (!localblock && !parser_t_globals_add(parser, varent)) ||
1131 ( localblock && !parser_t_locals_add(parser, varent)) )
1133 ast_value_delete(var);
1137 if (localblock && !ast_block_locals_add(localblock, var))
1139 parser_pop_local(parser);
1140 ast_value_delete(var);
1144 if (!parser_next(parser)) {
1145 ast_value_delete(var);
1149 if (parser->tok == ';') {
1150 if (!parser_next(parser))
1151 return parser->tok == TOKEN_EOF;
1155 if (parser->tok == ',') {
1160 if (parser->tok != '=') {
1161 parseerror(parser, "expected '=' or ';'");
1165 if (!parser_next(parser))
1168 if (parser->tok == '#') {
1170 parseerror(parser, "cannot declare builtins within functions");
1173 if (!isfunc || !func) {
1174 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
1177 if (!parser_next(parser)) {
1178 parseerror(parser, "expected builtin number");
1181 if (parser->tok != TOKEN_INTCONST) {
1182 parseerror(parser, "builtin number must be an integer constant");
1185 if (parser_token(parser)->constval.i <= 0) {
1186 parseerror(parser, "builtin number must be positive integer greater than zero");
1190 func->builtin = -parser_token(parser)->constval.i;
1191 } else if (parser->tok == '{') {
1194 ast_function *old = parser->function;
1197 parseerror(parser, "cannot declare functions within functions");
1201 parser->function = func;
1202 block = parser_parse_block(parser);
1203 parser->function = old;
1208 if (!ast_function_blocks_add(func, block)) {
1209 ast_block_delete(block);
1214 parseerror(parser, "TODO, const assignment");
1217 if (!parser_next(parser))
1220 if (parser->tok == ',') {
1225 if (parser->tok != ';') {
1226 parseerror(parser, "expected semicolon");
1230 (void)parser_next(parser);
1236 static bool parser_do(parser_t *parser)
1238 if (parser->tok == TOKEN_TYPENAME)
1240 return parser_variable(parser, NULL);
1242 else if (parser->tok == TOKEN_KEYWORD)
1244 /* handle 'var' and 'const' */
1247 else if (parser->tok == '.')
1251 bool isfunc = false;
1253 lex_ctx ctx = parser_ctx(parser);
1256 /* entity-member declaration */
1257 if (!parser_next(parser) || parser->tok != TOKEN_TYPENAME) {
1258 parseerror(parser, "expected member variable definition");
1262 /* remember the base/return type */
1263 basetype = parser_token(parser)->constval.t;
1265 /* parse into the declaration */
1266 if (!parser_next(parser)) {
1267 parseerror(parser, "expected field def");
1271 /* parse the field type fully */
1272 var = parser_parse_type(parser, basetype, &isfunc);
1276 /* now the field name */
1277 if (parser->tok != TOKEN_IDENT) {
1278 parseerror(parser, "expected field name");
1283 /* check for an existing field
1284 * in original qc we also have to check for an existing
1285 * global named like the field
1287 if (opts_standard == COMPILER_QCC) {
1288 if (parser_find_global(parser, parser_tokval(parser))) {
1289 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
1294 if (parser_find_field(parser, parser_tokval(parser))) {
1295 parseerror(parser, "field %s already exists", parser_tokval(parser));
1300 /* if it was a function, turn it into a function */
1303 /* turn var into a value of TYPE_FUNCTION, with the old var
1306 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
1308 ast_value_delete(var);
1309 ast_value_delete(fval);
1313 fval->expression.next = (ast_expression*)var;
1314 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
1319 /* turn it into a field */
1320 fld = ast_value_new(ctx, parser_tokval(parser), TYPE_FIELD);
1321 fld->expression.next = (ast_expression*)var;
1323 varent.var = (ast_expression*)fld;
1324 if (var->expression.vtype == TYPE_VECTOR)
1326 /* create _x, _y and _z fields as well */
1327 parseerror(parser, "TODO: vector field members (_x,_y,_z)");
1332 varent.name = util_strdup(fld->name);
1333 (void)!parser_t_fields_add(parser, varent);
1335 /* end with a semicolon */
1336 if (!parser_next(parser) || parser->tok != ';') {
1337 parseerror(parser, "semicolon expected");
1341 /* skip the semicolon */
1342 if (!parser_next(parser))
1343 return parser->tok == TOKEN_EOF;
1349 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
1355 static parser_t *parser;
1359 parser = (parser_t*)mem_a(sizeof(parser_t));
1363 memset(parser, 0, sizeof(parser));
1365 MEM_VECTOR_INIT(parser, globals);
1366 MEM_VECTOR_INIT(parser, locals);
1370 bool parser_compile(const char *filename)
1372 parser->lex = lex_open(filename);
1374 printf("failed to open file \"%s\"\n", filename);
1378 /* initial lexer/parser state */
1379 parser->lex->flags.noops = true;
1381 if (parser_next(parser))
1383 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
1385 if (!parser_do(parser)) {
1386 if (parser->tok == TOKEN_EOF)
1387 parseerror(parser, "unexpected eof");
1389 parseerror(parser, "parse error\n");
1390 lex_close(parser->lex);
1397 lex_close(parser->lex);
1399 return !parser->errors;
1402 void parser_cleanup()
1405 for (i = 0; i < parser->functions_count; ++i) {
1406 ast_delete(parser->functions[i]);
1408 for (i = 0; i < parser->imm_vector_count; ++i) {
1409 ast_delete(parser->imm_vector[i]);
1411 for (i = 0; i < parser->imm_string_count; ++i) {
1412 ast_delete(parser->imm_string[i]);
1414 for (i = 0; i < parser->imm_float_count; ++i) {
1415 ast_delete(parser->imm_float[i]);
1417 for (i = 0; i < parser->globals_count; ++i) {
1418 ast_delete(parser->globals[i].var);
1419 mem_d(parser->globals[i].name);
1421 MEM_VECTOR_CLEAR(parser, globals);
1426 bool parser_finish(const char *output)
1431 if (!parser->errors)
1433 ir = ir_builder_new("gmqcc_out");
1435 printf("failed to allocate builder\n");
1439 for (i = 0; i < parser->imm_float_count; ++i) {
1440 if (!ast_global_codegen(parser->imm_float[i], ir)) {
1441 printf("failed to generate global %s\n", parser->imm_float[i]->name);
1442 ir_builder_delete(ir);
1446 for (i = 0; i < parser->imm_string_count; ++i) {
1447 if (!ast_global_codegen(parser->imm_string[i], ir)) {
1448 printf("failed to generate global %s\n", parser->imm_string[i]->name);
1449 ir_builder_delete(ir);
1453 for (i = 0; i < parser->imm_vector_count; ++i) {
1454 if (!ast_global_codegen(parser->imm_vector[i], ir)) {
1455 printf("failed to generate global %s\n", parser->imm_vector[i]->name);
1456 ir_builder_delete(ir);
1460 for (i = 0; i < parser->fields_count; ++i) {
1463 if (!ast_istype(parser->fields[i].var, ast_value))
1465 field = (ast_value*)parser->fields[i].var;
1466 isconst = field->isconst;
1467 field->isconst = false;
1468 if (!ast_global_codegen((ast_value*)field, ir)) {
1469 printf("failed to generate field %s\n", field->name);
1470 ir_builder_delete(ir);
1475 ast_expression *subtype;
1476 field->isconst = true;
1477 subtype = field->expression.next;
1478 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
1479 if (subtype->expression.vtype == TYPE_FIELD)
1480 ifld->fieldtype = subtype->expression.next->expression.vtype;
1481 else if (subtype->expression.vtype == TYPE_FUNCTION)
1482 ifld->outtype = subtype->expression.next->expression.vtype;
1483 (void)!ir_value_set_field(field->ir_v, ifld);
1486 for (i = 0; i < parser->globals_count; ++i) {
1487 if (!ast_istype(parser->globals[i].var, ast_value))
1489 if (!ast_global_codegen((ast_value*)(parser->globals[i].var), ir)) {
1490 printf("failed to generate global %s\n", parser->globals[i].name);
1491 ir_builder_delete(ir);
1495 for (i = 0; i < parser->functions_count; ++i) {
1496 if (!ast_function_codegen(parser->functions[i], ir)) {
1497 printf("failed to generate function %s\n", parser->functions[i]->name);
1498 ir_builder_delete(ir);
1501 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
1502 printf("failed to finalize function %s\n", parser->functions[i]->name);
1503 ir_builder_delete(ir);
1508 ir_builder_dump(ir, printf);
1510 if (!ir_builder_generate(ir, output)) {
1511 printf("*** failed to generate output file\n");
1512 ir_builder_delete(ir);
1516 ir_builder_delete(ir);
1520 printf("*** there were compile errors\n");