18 MEM_VECTOR_MAKE(varentry_t, globals);
19 MEM_VECTOR_MAKE(varentry_t, fields);
20 MEM_VECTOR_MAKE(ast_function*, functions);
21 MEM_VECTOR_MAKE(ast_value*, imm_float);
22 MEM_VECTOR_MAKE(ast_value*, imm_string);
23 MEM_VECTOR_MAKE(ast_value*, imm_vector);
25 ast_function *function;
26 MEM_VECTOR_MAKE(varentry_t, locals);
32 MEM_VEC_FUNCTIONS(parser_t, varentry_t, globals)
33 MEM_VEC_FUNCTIONS(parser_t, varentry_t, fields)
34 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_float)
35 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_string)
36 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_vector)
37 MEM_VEC_FUNCTIONS(parser_t, varentry_t, locals)
38 MEM_VEC_FUNCTIONS(parser_t, ast_function*, functions)
40 void parseerror(parser_t *parser, const char *fmt, ...)
47 printf("error %s:%lu: ", parser->lex->tok->ctx.file, (unsigned long)parser->lex->tok->ctx.line);
58 bool parser_next(parser_t *parser)
60 /* lex_do kills the previous token */
61 parser->tok = lex_do(parser->lex);
62 if (parser->tok == TOKEN_EOF || parser->tok >= TOKEN_ERROR)
67 /* lift a token out of the parser so it's not destroyed by parser_next */
68 token *parser_lift(parser_t *parser)
70 token *tok = parser->lex->tok;
71 parser->lex->tok = NULL;
75 #define parser_tokval(p) (p->lex->tok->value)
76 #define parser_token(p) (p->lex->tok)
77 #define parser_ctx(p) (p->lex->tok->ctx)
79 ast_value* parser_const_float(parser_t *parser, double d)
83 for (i = 0; i < parser->imm_float_count; ++i) {
84 if (parser->imm_float[i]->constval.vfloat == d)
85 return parser->imm_float[i];
87 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
89 out->constval.vfloat = d;
90 if (!parser_t_imm_float_add(parser, out)) {
91 ast_value_delete(out);
97 ast_value* parser_const_string(parser_t *parser, const char *str)
101 for (i = 0; i < parser->imm_string_count; ++i) {
102 if (!strcmp(parser->imm_string[i]->constval.vstring, str))
103 return parser->imm_string[i];
105 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
107 out->constval.vstring = util_strdup(str);
108 if (!parser_t_imm_string_add(parser, out)) {
109 ast_value_delete(out);
115 ast_value* parser_const_vector(parser_t *parser, vector v)
119 for (i = 0; i < parser->imm_vector_count; ++i) {
120 if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
121 return parser->imm_vector[i];
123 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
125 out->constval.vvec = v;
126 if (!parser_t_imm_vector_add(parser, out)) {
127 ast_value_delete(out);
133 ast_expression* parser_find_field(parser_t *parser, const char *name)
136 for (i = 0; i < parser->fields_count; ++i) {
137 if (!strcmp(parser->fields[i].name, name))
138 return parser->fields[i].var;
143 ast_expression* parser_find_global(parser_t *parser, const char *name)
146 for (i = 0; i < parser->globals_count; ++i) {
147 if (!strcmp(parser->globals[i].name, name))
148 return parser->globals[i].var;
153 ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto)
157 for (i = parser->locals_count; i > upto;) {
159 if (!strcmp(parser->locals[i].name, name))
160 return parser->locals[i].var;
162 fun = parser->function->vtype;
163 for (i = 0; i < fun->expression.params_count; ++i) {
164 if (!strcmp(fun->expression.params[i]->name, name))
165 return (ast_expression*)(fun->expression.params[i]);
170 ast_expression* parser_find_var(parser_t *parser, const char *name)
173 v = parser_find_local(parser, name, 0);
174 if (!v) v = parser_find_global(parser, name);
179 MEM_VECTOR_MAKE(ast_value*, p);
181 MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
183 static ast_value *parser_parse_type(parser_t *parser, int basetype, bool *isfunc)
187 lex_ctx ctx = parser_ctx(parser);
188 int vtype = basetype;
192 MEM_VECTOR_INIT(¶ms, p);
196 if (parser->tok == '(') {
202 if (!parser_next(parser))
205 if (parser->tok == ')')
208 temptype = parser_token(parser)->constval.t;
209 if (!parser_next(parser))
212 param = parser_parse_type(parser, temptype, &dummy);
218 if (parser->tok == TOKEN_IDENT) {
219 /* named parameter */
220 if (!ast_value_set_name(param, parser_tokval(parser)))
222 if (!parser_next(parser))
226 if (!paramlist_t_p_add(¶ms, param)) {
227 parseerror(parser, "Out of memory while parsing typename");
231 if (parser->tok == ',')
233 if (parser->tok == ')')
235 parseerror(parser, "Unexpected token");
238 if (!parser_next(parser))
242 var = ast_value_new(ctx, "<unnamed>", vtype);
245 MEM_VECTOR_MOVE(¶ms, p, &var->expression, params);
248 for (i = 0; i < params.p_count; ++i)
249 ast_value_delete(params.p[i]);
250 MEM_VECTOR_CLEAR(¶ms, p);
256 size_t etype; /* 0 = expression, others are operators */
260 ast_block *block; /* for commas and function calls */
265 MEM_VECTOR_MAKE(sy_elem, out);
266 MEM_VECTOR_MAKE(sy_elem, ops);
268 MEM_VEC_FUNCTIONS(shunt, sy_elem, out)
269 MEM_VEC_FUNCTIONS(shunt, sy_elem, ops)
271 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
281 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
284 e.out = (ast_expression*)v;
291 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
293 e.etype = 1 + (op - operators);
301 static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
312 static bool parser_sy_pop(parser_t *parser, shunt *sy)
316 ast_expression *out = NULL;
317 ast_expression *exprs[3];
318 ast_block *blocks[3];
321 if (!sy->ops_count) {
322 parseerror(parser, "internal error: missing operator");
326 if (sy->ops[sy->ops_count-1].paren) {
327 parseerror(parser, "unmatched parenthesis");
331 op = &operators[sy->ops[sy->ops_count-1].etype - 1];
332 ctx = sy->ops[sy->ops_count-1].ctx;
334 if (sy->out_count < op->operands) {
335 parseerror(parser, "internal error: not enough operands: %i", sy->out_count);
341 sy->out_count -= op->operands;
342 for (i = 0; i < op->operands; ++i) {
343 exprs[i] = sy->out[sy->out_count+i].out;
344 blocks[i] = sy->out[sy->out_count+i].block;
347 if (blocks[0] && !blocks[0]->exprs_count && op->id != opid1(',')) {
348 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
355 parseerror(parser, "internal error: unhandled operand");
360 if (!ast_block_exprs_add(blocks[0], exprs[1]))
363 blocks[0] = ast_block_new(ctx);
364 if (!ast_block_exprs_add(blocks[0], exprs[0]) ||
365 !ast_block_exprs_add(blocks[0], exprs[1]))
370 if (!ast_block_set_type(blocks[0], exprs[1]))
373 sy->out[sy->out_count++] = syblock(ctx, blocks[0]);
377 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
378 parseerror(parser, "Cannot add type %s and %s",
379 type_name[exprs[0]->expression.vtype],
380 type_name[exprs[1]->expression.vtype]);
383 switch (exprs[0]->expression.vtype) {
385 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
388 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
391 parseerror(parser, "Cannot add type %s and %s",
392 type_name[exprs[0]->expression.vtype],
393 type_name[exprs[1]->expression.vtype]);
398 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
399 parseerror(parser, "Cannot subtract type %s from %s",
400 type_name[exprs[1]->expression.vtype],
401 type_name[exprs[0]->expression.vtype]);
404 switch (exprs[0]->expression.vtype) {
406 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
409 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
412 parseerror(parser, "Cannot add type %s from %s",
413 type_name[exprs[1]->expression.vtype],
414 type_name[exprs[0]->expression.vtype]);
419 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
420 exprs[0]->expression.vtype != TYPE_VECTOR &&
421 exprs[0]->expression.vtype != TYPE_FLOAT &&
422 exprs[1]->expression.vtype != TYPE_VECTOR &&
423 exprs[1]->expression.vtype != TYPE_FLOAT)
425 parseerror(parser, "Cannot multiply type %s from %s",
426 type_name[exprs[1]->expression.vtype],
427 type_name[exprs[0]->expression.vtype]);
430 switch (exprs[0]->expression.vtype) {
432 if (exprs[1]->expression.vtype == TYPE_VECTOR)
433 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
435 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
438 if (exprs[1]->expression.vtype == TYPE_FLOAT)
439 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
441 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
444 parseerror(parser, "Cannot add type %s from %s",
445 type_name[exprs[1]->expression.vtype],
446 type_name[exprs[0]->expression.vtype]);
451 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
452 exprs[0]->expression.vtype != TYPE_FLOAT)
454 parseerror(parser, "Cannot divide types %s and %s",
455 type_name[exprs[0]->expression.vtype],
456 type_name[exprs[1]->expression.vtype]);
459 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
464 out = (ast_expression*)ast_store_new(ctx,
465 type_store_instr[exprs[0]->expression.vtype],
471 parseerror(parser, "failed to apply operand %s", op->op);
475 sy->out[sy->out_count++] = syexp(ctx, out);
479 static bool parser_close_call(parser_t *parser, shunt *sy)
481 /* was a function call */
489 fid = sy->ops[sy->ops_count].off;
491 /* out[fid] is the function
492 * everything above is parameters...
494 * 1 params = ast_expression
498 if (sy->out_count < 1 || sy->out_count <= fid) {
499 parseerror(parser, "internal error: function call needs function and parameter list...");
503 fun = sy->out[fid].out;
505 call = ast_call_new(sy->ops[sy->ops_count].ctx, fun);
507 parseerror(parser, "out of memory");
511 if (fid+1 == sy->out_count) {
514 } else if (fid+2 == sy->out_count) {
517 params = sy->out[sy->out_count].block;
521 if (!ast_call_params_add(call, sy->out[sy->out_count].out)) {
522 ast_delete(sy->out[sy->out_count].out);
523 parseerror(parser, "out of memory");
527 paramcount = params->exprs_count;
528 MEM_VECTOR_MOVE(params, exprs, call, params);
532 parseerror(parser, "invalid function call");
536 /* overwrite fid, the function, with a call */
537 sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
539 if (fun->expression.vtype != TYPE_FUNCTION) {
540 parseerror(parser, "not a function");
544 if (!fun->expression.next) {
545 parseerror(parser, "could not determine function return type");
548 if (fun->expression.params_count != paramcount) {
549 parseerror(parser, "expected %i parameters, got %i", (int)fun->expression.params_count, paramcount);
557 static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
559 if (!sy->ops_count) {
560 parseerror(parser, "unmatched closing paren");
563 if (sy->ops[sy->ops_count-1].paren == 1) {
564 parseerror(parser, "empty parenthesis expression");
567 while (sy->ops_count) {
568 if (sy->ops[sy->ops_count-1].paren == 'f') {
569 if (!parser_close_call(parser, sy))
573 if (sy->ops[sy->ops_count-1].paren == 1) {
575 return !functions_only;
577 if (!parser_sy_pop(parser, sy))
583 static ast_expression* parser_expression(parser_t *parser)
585 ast_expression *expr = NULL;
589 /* count the parens because an if starts with one, so the
590 * end of a condition is an unmatched closing paren
594 MEM_VECTOR_INIT(&sy, out);
595 MEM_VECTOR_INIT(&sy, ops);
601 bool nextwant = true;
602 if (parser->tok == TOKEN_IDENT)
605 ast_expression *var = parser_find_var(parser, parser_tokval(parser));
607 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
610 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), var))) {
611 parseerror(parser, "out of memory");
615 else if (parser->tok == TOKEN_FLOATCONST) {
616 ast_value *val = parser_const_float(parser, (parser_token(parser)->constval.f));
619 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
620 parseerror(parser, "out of memory");
624 else if (parser->tok == TOKEN_INTCONST) {
625 ast_value *val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
628 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
629 parseerror(parser, "out of memory");
633 else if (parser->tok == TOKEN_STRINGCONST) {
634 ast_value *val = parser_const_string(parser, parser_tokval(parser));
637 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
638 parseerror(parser, "out of memory");
642 else if (parser->tok == TOKEN_VECTORCONST) {
643 ast_value *val = parser_const_vector(parser, parser_token(parser)->constval.v);
646 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
647 parseerror(parser, "out of memory");
651 else if (parser->tok == '(') {
653 nextwant = false; /* not expecting an operator next */
654 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1, 0))) {
655 parseerror(parser, "out of memory");
659 else if (parser->tok == ')') {
663 /* allowed for function calls */
664 if (!parser_close_paren(parser, &sy, true))
668 /* TODO: prefix operators */
669 parseerror(parser, "expected statement");
673 parser->lex->flags.noops = !wantop;
675 if (parser->tok == '(') {
677 /* we expected an operator, this is the function-call operator */
678 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f', sy.out_count-1))) {
679 parseerror(parser, "out of memory");
683 else if (parser->tok == ')') {
687 /* we do expect an operator next */
688 /* closing an opening paren */
689 if (!parser_close_paren(parser, &sy, false))
692 else if (parser->tok != TOKEN_OPERATOR) {
693 parseerror(parser, "expected operator or end of statement");
697 /* classify the operator */
698 /* TODO: suffix operators */
700 const oper_info *olast = NULL;
702 for (o = 0; o < operator_count; ++o) {
703 if (!(operators[o].flags & OP_PREFIX) &&
704 !(operators[o].flags & OP_SUFFIX) && /* remove this */
705 !strcmp(parser_tokval(parser), operators[o].op))
710 if (o == operator_count) {
711 /* no operator found... must be the end of the statement */
714 /* found an operator */
717 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
718 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
721 (op->prec < olast->prec) ||
722 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
724 if (!parser_sy_pop(parser, &sy))
726 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
727 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
730 if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
734 parser->lex->flags.noops = true;
736 if (!parser_next(parser)) {
739 if (parser->tok == ';') {
743 if (parens >= 0 && !parser_next(parser)) {
744 parseerror(parser, "Unexpected end of file");
748 while (sy.ops_count) {
749 if (!parser_sy_pop(parser, &sy))
753 parser->lex->flags.noops = true;
755 parseerror(parser, "empty expression");
758 expr = sy.out[0].out;
759 MEM_VECTOR_CLEAR(&sy, out);
760 MEM_VECTOR_CLEAR(&sy, ops);
764 parser->lex->flags.noops = true;
765 MEM_VECTOR_CLEAR(&sy, out);
766 MEM_VECTOR_CLEAR(&sy, ops);
770 static bool parser_variable(parser_t *parser, ast_block *localblock);
771 static ast_block* parser_parse_block(parser_t *parser);
772 static ast_expression* parser_parse_statement_or_block(parser_t *parser);
773 static bool parser_parse_statement(parser_t *parser, ast_block *block, ast_expression **out)
775 if (parser->tok == TOKEN_TYPENAME)
779 parseerror(parser, "cannot declare a variable from here");
782 if (!parser_variable(parser, block))
787 else if (parser->tok == TOKEN_KEYWORD)
789 if (!strcmp(parser_tokval(parser), "return"))
791 ast_expression *exp = NULL;
792 ast_return *ret = NULL;
793 ast_value *expected = parser->function->vtype;
795 if (!parser_next(parser)) {
796 parseerror(parser, "expected return expression");
800 if (parser->tok != ';') {
801 exp = parser_expression(parser);
805 if (exp->expression.vtype != expected->expression.next->expression.vtype) {
806 parseerror(parser, "return with invalid expression");
809 ret = ast_return_new(exp->expression.node.context, exp);
815 *out = (ast_expression*)ret;
816 } else if (!parser_next(parser)) {
817 parseerror(parser, "expected semicolon");
818 if (expected->expression.next->expression.vtype != TYPE_VOID) {
819 parseerror(parser, "return without value");
824 else if (!strcmp(parser_tokval(parser), "if"))
827 ast_expression *cond, *ontrue, *onfalse = NULL;
829 lex_ctx ctx = parser_ctx(parser);
831 /* skip the 'if' and check for opening paren */
832 if (!parser_next(parser) || parser->tok != '(') {
833 parseerror(parser, "expected 'if' condition in parenthesis");
836 /* parse into the expression */
837 if (!parser_next(parser)) {
838 parseerror(parser, "expected 'if' condition after opening paren");
841 /* parse the condition */
842 cond = parser_expression(parser);
846 if (parser->tok != ')') {
847 parseerror(parser, "expected closing paren after 'if' condition");
851 /* parse into the 'then' branch */
852 if (!parser_next(parser)) {
853 parseerror(parser, "expected statement for on-true branch of 'if'");
857 ontrue = parser_parse_statement_or_block(parser);
862 /* check for an else */
863 if (!strcmp(parser_tokval(parser), "else")) {
864 /* parse into the 'else' branch */
865 if (!parser_next(parser)) {
866 parseerror(parser, "expected on-false branch after 'else'");
871 onfalse = parser_parse_statement_or_block(parser);
879 ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
880 *out = (ast_expression*)ifthen;
883 parseerror(parser, "Unexpected keyword");
886 else if (parser->tok == '{')
889 inner = parser_parse_block(parser);
892 *out = (ast_expression*)inner;
897 ast_expression *exp = parser_expression(parser);
905 static void parser_pop_local(parser_t *parser)
907 parser->locals_count--;
908 mem_d(parser->locals[parser->locals_count].name);
911 static ast_block* parser_parse_block(parser_t *parser)
913 size_t oldblocklocal;
914 ast_block *block = NULL;
916 oldblocklocal = parser->blocklocal;
917 parser->blocklocal = parser->locals_count;
919 if (!parser_next(parser)) { /* skip the '{' */
920 parseerror(parser, "expected function body");
924 block = ast_block_new(parser_ctx(parser));
926 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
928 ast_expression *expr;
929 if (parser->tok == '}')
932 if (!parser_parse_statement(parser, block, &expr)) {
933 ast_block_delete(block);
939 if (!ast_block_exprs_add(block, expr)) {
941 ast_block_delete(block);
947 if (parser->tok != '}') {
948 ast_block_delete(block);
951 (void)parser_next(parser);
955 parser->blocklocal = oldblocklocal;
956 /* unroll the local vector */
957 while (parser->locals_count > parser->blocklocal)
958 parser_pop_local(parser);
962 static ast_expression* parser_parse_statement_or_block(parser_t *parser)
964 ast_expression *expr;
965 if (parser->tok == '{')
966 return (ast_expression*)parser_parse_block(parser);
967 if (!parser_parse_statement(parser, NULL, &expr))
972 static bool parser_variable(parser_t *parser, ast_block *localblock)
975 ast_function *func = NULL;
980 int basetype = parser_token(parser)->constval.t;
984 if (!parser_next(parser)) { /* skip basetype or comma */
985 parseerror(parser, "expected variable declaration");
991 ctx = parser_ctx(parser);
992 var = parser_parse_type(parser, basetype, &isfunc);
997 if (parser->tok != TOKEN_IDENT) {
998 parseerror(parser, "expected variable name\n");
1002 if (!localblock && parser_find_global(parser, parser_tokval(parser))) {
1003 ast_value_delete(var);
1004 parseerror(parser, "global already exists: %s\n", parser_tokval(parser));
1008 if (localblock && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
1009 ast_value_delete(var);
1010 parseerror(parser, "local variable already exists: %s\n", parser_tokval(parser));
1014 if (!ast_value_set_name(var, parser_tokval(parser))) {
1015 parseerror(parser, "failed to set variable name\n");
1016 ast_value_delete(var);
1021 /* a function was defined */
1024 /* turn var into a value of TYPE_FUNCTION, with the old var
1027 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
1028 func = ast_function_new(ctx, var->name, fval);
1029 if (!fval || !func) {
1030 ast_value_delete(var);
1031 if (fval) ast_value_delete(fval);
1032 if (func) ast_function_delete(func);
1036 fval->expression.next = (ast_expression*)var;
1037 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
1039 if (!parser_t_functions_add(parser, func)) {
1040 ast_value_delete(var);
1041 if (fval) ast_value_delete(fval);
1042 if (func) ast_function_delete(func);
1049 varent.name = util_strdup(var->name);
1050 varent.var = (ast_expression*)var;
1051 if (var->expression.vtype == TYPE_VECTOR)
1053 size_t len = strlen(varent.name);
1054 varentry_t vx, vy, vz;
1055 vx.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 0);
1056 vy.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 1);
1057 vz.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 2);
1058 vx.name = mem_a(len+3);
1059 vy.name = mem_a(len+3);
1060 vz.name = mem_a(len+3);
1061 strcpy(vx.name, varent.name);
1062 strcpy(vy.name, varent.name);
1063 strcpy(vz.name, varent.name);
1064 vx.name[len] = vy.name[len] = vz.name[len] = '_';
1065 vx.name[len+1] = 'x';
1066 vy.name[len+1] = 'y';
1067 vz.name[len+1] = 'z';
1068 vx.name[len+2] = vy.name[len+2] = vz.name[len+2] = 0;
1071 (void)!parser_t_globals_add(parser, varent);
1072 (void)!parser_t_globals_add(parser, vx);
1073 (void)!parser_t_globals_add(parser, vy);
1074 (void)!parser_t_globals_add(parser, vz);
1076 (void)!parser_t_locals_add(parser, varent);
1077 (void)!parser_t_locals_add(parser, vx);
1078 (void)!parser_t_locals_add(parser, vy);
1079 (void)!parser_t_locals_add(parser, vz);
1084 if ( (!localblock && !parser_t_globals_add(parser, varent)) ||
1085 ( localblock && !parser_t_locals_add(parser, varent)) )
1087 ast_value_delete(var);
1091 if (localblock && !ast_block_locals_add(localblock, var))
1093 parser_pop_local(parser);
1094 ast_value_delete(var);
1098 if (!parser_next(parser)) {
1099 ast_value_delete(var);
1103 if (parser->tok == ';') {
1104 if (!parser_next(parser))
1105 return parser->tok == TOKEN_EOF;
1109 if (parser->tok == ',') {
1114 if (parser->tok != '=') {
1115 parseerror(parser, "expected '=' or ';'");
1119 if (!parser_next(parser))
1122 if (parser->tok == '#') {
1124 parseerror(parser, "cannot declare builtins within functions");
1127 if (!isfunc || !func) {
1128 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
1131 if (!parser_next(parser)) {
1132 parseerror(parser, "expected builtin number");
1135 if (parser->tok != TOKEN_INTCONST) {
1136 parseerror(parser, "builtin number must be an integer constant");
1139 if (parser_token(parser)->constval.i <= 0) {
1140 parseerror(parser, "builtin number must be positive integer greater than zero");
1144 func->builtin = -parser_token(parser)->constval.i;
1145 } else if (parser->tok == '{') {
1148 ast_function *old = parser->function;
1151 parseerror(parser, "cannot declare functions within functions");
1155 parser->function = func;
1156 block = parser_parse_block(parser);
1157 parser->function = old;
1162 if (!ast_function_blocks_add(func, block)) {
1163 ast_block_delete(block);
1168 parseerror(parser, "TODO, const assignment");
1171 if (!parser_next(parser))
1174 if (parser->tok == ',') {
1179 if (parser->tok != ';') {
1180 parseerror(parser, "expected semicolon");
1184 (void)parser_next(parser);
1190 static bool parser_do(parser_t *parser)
1192 if (parser->tok == TOKEN_TYPENAME)
1194 return parser_variable(parser, NULL);
1196 else if (parser->tok == TOKEN_KEYWORD)
1198 /* handle 'var' and 'const' */
1201 else if (parser->tok == '.')
1205 bool isfunc = false;
1207 lex_ctx ctx = parser_ctx(parser);
1210 /* entity-member declaration */
1211 if (!parser_next(parser) || parser->tok != TOKEN_TYPENAME) {
1212 parseerror(parser, "expected member variable definition");
1216 /* remember the base/return type */
1217 basetype = parser_token(parser)->constval.t;
1219 /* parse into the declaration */
1220 if (!parser_next(parser)) {
1221 parseerror(parser, "expected field def");
1225 /* parse the field type fully */
1226 var = parser_parse_type(parser, basetype, &isfunc);
1230 /* now the field name */
1231 if (parser->tok != TOKEN_IDENT) {
1232 parseerror(parser, "expected field name");
1237 /* check for an existing field
1238 * in original qc we also have to check for an existing
1239 * global named like the field
1241 if (opts_standard == COMPILER_QCC) {
1242 if (parser_find_global(parser, parser_tokval(parser))) {
1243 parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
1248 if (parser_find_field(parser, parser_tokval(parser))) {
1249 parseerror(parser, "field %s already exists", parser_tokval(parser));
1254 /* if it was a function, turn it into a function */
1257 /* turn var into a value of TYPE_FUNCTION, with the old var
1260 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
1262 ast_value_delete(var);
1263 ast_value_delete(fval);
1267 fval->expression.next = (ast_expression*)var;
1268 MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
1273 /* turn it into a field */
1274 fld = ast_value_new(ctx, parser_tokval(parser), TYPE_FIELD);
1275 fld->expression.next = (ast_expression*)var;
1277 varent.var = (ast_expression*)fld;
1278 if (var->expression.vtype == TYPE_VECTOR)
1280 /* create _x, _y and _z fields as well */
1281 parseerror(parser, "TODO: vector field members (_x,_y,_z)");
1286 varent.name = util_strdup(fld->name);
1287 (void)!parser_t_fields_add(parser, varent);
1289 /* end with a semicolon */
1290 if (!parser_next(parser) || parser->tok != ';') {
1291 parseerror(parser, "semicolon expected");
1295 /* skip the semicolon */
1296 if (!parser_next(parser))
1297 return parser->tok == TOKEN_EOF;
1303 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
1309 static parser_t *parser;
1313 parser = (parser_t*)mem_a(sizeof(parser_t));
1317 memset(parser, 0, sizeof(parser));
1319 MEM_VECTOR_INIT(parser, globals);
1320 MEM_VECTOR_INIT(parser, locals);
1324 bool parser_compile(const char *filename)
1326 parser->lex = lex_open(filename);
1328 printf("failed to open file \"%s\"\n", filename);
1332 /* initial lexer/parser state */
1333 parser->lex->flags.noops = true;
1335 if (parser_next(parser))
1337 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
1339 if (!parser_do(parser)) {
1340 if (parser->tok == TOKEN_EOF)
1341 parseerror(parser, "unexpected eof");
1343 parseerror(parser, "parse error\n");
1344 lex_close(parser->lex);
1351 lex_close(parser->lex);
1353 return !parser->errors;
1356 void parser_cleanup()
1359 for (i = 0; i < parser->functions_count; ++i) {
1360 ast_delete(parser->functions[i]);
1362 for (i = 0; i < parser->imm_vector_count; ++i) {
1363 ast_delete(parser->imm_vector[i]);
1365 for (i = 0; i < parser->imm_string_count; ++i) {
1366 ast_delete(parser->imm_string[i]);
1368 for (i = 0; i < parser->imm_float_count; ++i) {
1369 ast_delete(parser->imm_float[i]);
1371 for (i = 0; i < parser->globals_count; ++i) {
1372 ast_delete(parser->globals[i].var);
1373 mem_d(parser->globals[i].name);
1375 MEM_VECTOR_CLEAR(parser, globals);
1380 bool parser_finish(const char *output)
1385 if (!parser->errors)
1387 ir = ir_builder_new("gmqcc_out");
1389 printf("failed to allocate builder\n");
1393 for (i = 0; i < parser->imm_float_count; ++i) {
1394 if (!ast_global_codegen(parser->imm_float[i], ir)) {
1395 printf("failed to generate global %s\n", parser->imm_float[i]->name);
1396 ir_builder_delete(ir);
1400 for (i = 0; i < parser->imm_string_count; ++i) {
1401 if (!ast_global_codegen(parser->imm_string[i], ir)) {
1402 printf("failed to generate global %s\n", parser->imm_string[i]->name);
1403 ir_builder_delete(ir);
1407 for (i = 0; i < parser->imm_vector_count; ++i) {
1408 if (!ast_global_codegen(parser->imm_vector[i], ir)) {
1409 printf("failed to generate global %s\n", parser->imm_vector[i]->name);
1410 ir_builder_delete(ir);
1414 for (i = 0; i < parser->fields_count; ++i) {
1417 if (!ast_istype(parser->fields[i].var, ast_value))
1419 field = (ast_value*)parser->fields[i].var;
1420 isconst = field->isconst;
1421 field->isconst = false;
1422 if (!ast_global_codegen((ast_value*)field, ir)) {
1423 printf("failed to generate field %s\n", field->name);
1424 ir_builder_delete(ir);
1429 ast_expression *subtype;
1430 field->isconst = true;
1431 subtype = field->expression.next;
1432 ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
1433 if (subtype->expression.vtype == TYPE_FIELD)
1434 ifld->fieldtype = subtype->expression.next->expression.vtype;
1435 else if (subtype->expression.vtype == TYPE_FUNCTION)
1436 ifld->outtype = subtype->expression.next->expression.vtype;
1437 (void)!ir_value_set_field(field->ir_v, ifld);
1440 for (i = 0; i < parser->globals_count; ++i) {
1441 if (!ast_istype(parser->globals[i].var, ast_value))
1443 if (!ast_global_codegen((ast_value*)(parser->globals[i].var), ir)) {
1444 printf("failed to generate global %s\n", parser->globals[i].name);
1445 ir_builder_delete(ir);
1449 for (i = 0; i < parser->functions_count; ++i) {
1450 if (!ast_function_codegen(parser->functions[i], ir)) {
1451 printf("failed to generate function %s\n", parser->functions[i]->name);
1452 ir_builder_delete(ir);
1455 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
1456 printf("failed to finalize function %s\n", parser->functions[i]->name);
1457 ir_builder_delete(ir);
1462 ir_builder_dump(ir, printf);
1464 if (!ir_builder_generate(ir, output)) {
1465 printf("*** failed to generate output file\n");
1466 ir_builder_delete(ir);
1470 ir_builder_delete(ir);
1474 printf("*** there were compile errors\n");