11 MEM_VECTOR_MAKE(ast_value*, globals);
12 MEM_VECTOR_MAKE(ast_function*, functions);
13 MEM_VECTOR_MAKE(ast_value*, imm_float);
15 ast_function *function;
16 MEM_VECTOR_MAKE(ast_value*, locals);
20 MEM_VEC_FUNCTIONS(parser_t, ast_value*, globals)
21 MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_float)
22 MEM_VEC_FUNCTIONS(parser_t, ast_value*, locals)
23 MEM_VEC_FUNCTIONS(parser_t, ast_function*, functions)
25 void parseerror(parser_t *parser, const char *fmt, ...)
30 printf("error %s:%lu: ", parser->lex->tok->ctx.file, (unsigned long)parser->lex->tok->ctx.line);
41 bool parser_next(parser_t *parser)
43 /* lex_do kills the previous token */
44 parser->tok = lex_do(parser->lex);
45 if (parser->tok == TOKEN_EOF || parser->tok >= TOKEN_ERROR)
50 /* lift a token out of the parser so it's not destroyed by parser_next */
51 token *parser_lift(parser_t *parser)
53 token *tok = parser->lex->tok;
54 parser->lex->tok = NULL;
58 #define parser_tokval(p) (p->lex->tok->value)
59 #define parser_token(p) (p->lex->tok)
60 #define parser_ctx(p) (p->lex->tok->ctx)
62 ast_value* parser_const_float(parser_t *parser, double d)
66 for (i = 0; i < parser->imm_float_count; ++i) {
67 if (parser->imm_float[i]->constval.vfloat == d)
68 return parser->imm_float[i];
70 out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_FLOAT);
72 out->constval.vfloat = d;
73 if (!parser_t_imm_float_add(parser, out)) {
74 ast_value_delete(out);
80 ast_value* parser_find_global(parser_t *parser, const char *name)
83 for (i = 0; i < parser->globals_count; ++i) {
84 if (!strcmp(parser->globals[i]->name, name))
85 return parser->globals[i];
90 ast_value* parser_find_local(parser_t *parser, const char *name, size_t upto)
94 for (i = parser->locals_count; i > upto;) {
96 if (!strcmp(parser->locals[i]->name, name))
97 return parser->locals[i];
99 fun = parser->function->vtype;
100 for (i = 0; i < fun->params_count; ++i) {
101 if (!strcmp(fun->params[i]->name, name))
102 return fun->params[i];
107 ast_value* parser_find_var(parser_t *parser, const char *name)
110 v = parser_find_local(parser, name, 0);
111 if (!v) v = parser_find_global(parser, name);
116 MEM_VECTOR_MAKE(ast_value*, p);
118 MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
120 static ast_value *parser_parse_type(parser_t *parser, int basetype, bool *isfunc)
124 lex_ctx ctx = parser_ctx(parser);
125 int vtype = basetype;
129 MEM_VECTOR_INIT(¶ms, p);
133 if (parser->tok == '(') {
139 if (!parser_next(parser))
142 if (parser->tok == ')')
145 temptype = parser_token(parser)->constval.t;
146 if (!parser_next(parser))
149 param = parser_parse_type(parser, temptype, &dummy);
155 if (parser->tok == TOKEN_IDENT) {
156 /* named parameter */
157 if (!ast_value_set_name(param, parser_tokval(parser)))
159 if (!parser_next(parser))
163 if (!paramlist_t_p_add(¶ms, param)) {
164 parseerror(parser, "Out of memory while parsing typename");
168 if (parser->tok == ',')
170 if (parser->tok == ')')
172 parseerror(parser, "Unexpected token");
175 if (!parser_next(parser))
179 var = ast_value_new(ctx, "<unnamed>", vtype);
182 MEM_VECTOR_MOVE(¶ms, p, var, params);
185 for (i = 0; i < params.p_count; ++i)
186 ast_value_delete(params.p[i]);
187 MEM_VECTOR_CLEAR(¶ms, p);
193 size_t etype; /* 0 = expression, others are operators */
196 ast_value *value; /* need to know if we can assign */
197 ast_block *block; /* for commas and function calls */
202 MEM_VECTOR_MAKE(sy_elem, out);
203 MEM_VECTOR_MAKE(sy_elem, ops);
205 MEM_VEC_FUNCTIONS(shunt, sy_elem, out)
206 MEM_VEC_FUNCTIONS(shunt, sy_elem, ops)
208 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
218 static sy_elem syval(lex_ctx ctx, ast_value *v) {
221 e.out = (ast_expression*)v;
229 static sy_elem syblock(lex_ctx ctx, ast_block *v) {
232 e.out = (ast_expression*)v;
240 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
242 e.etype = 1 + (op - operators);
251 static sy_elem syparen(lex_ctx ctx, int p) {
262 static bool parser_sy_pop(parser_t *parser, shunt *sy)
266 ast_expression *out = NULL;
267 ast_expression *exprs[3];
269 ast_block *blocks[3];
272 if (!sy->ops_count) {
273 parseerror(parser, "internal error: missing operator");
277 if (sy->ops[sy->ops_count-1].paren) {
278 parseerror(parser, "unmatched parenthesis");
282 op = &operators[sy->ops[sy->ops_count-1].etype - 1];
283 ctx = sy->ops[sy->ops_count-1].ctx;
285 if (sy->out_count < op->operands) {
286 parseerror(parser, "internal error: not enough operands: %i", sy->out_count);
292 sy->out_count -= op->operands;
293 for (i = 0; i < op->operands; ++i) {
294 exprs[i] = sy->out[sy->out_count+i].out;
295 vars[i] = sy->out[sy->out_count+i].value;
296 blocks[i] = sy->out[sy->out_count+i].block;
299 if (blocks[0] && !blocks[0]->exprs_count && op->id != opid1(',')) {
300 parseerror(parser, "internal error: operator cannot be applied on empty blocks");
307 parseerror(parser, "internal error: unhandled operand");
312 if (!ast_block_exprs_add(blocks[0], exprs[1]))
315 blocks[0] = ast_block_new(ctx);
316 if (!ast_block_exprs_add(blocks[0], exprs[0]) ||
317 !ast_block_exprs_add(blocks[0], exprs[1]))
322 if (!ast_block_set_type(blocks[0], exprs[1]))
325 sy->out[sy->out_count++] = syblock(ctx, blocks[0]);
329 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
330 parseerror(parser, "Cannot add type %s and %s",
331 type_name[exprs[0]->expression.vtype],
332 type_name[exprs[1]->expression.vtype]);
335 switch (exprs[0]->expression.vtype) {
337 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
340 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
343 parseerror(parser, "Cannot add type %s and %s",
344 type_name[exprs[0]->expression.vtype],
345 type_name[exprs[1]->expression.vtype]);
350 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
351 parseerror(parser, "Cannot subtract type %s from %s",
352 type_name[exprs[1]->expression.vtype],
353 type_name[exprs[0]->expression.vtype]);
356 switch (exprs[0]->expression.vtype) {
358 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
361 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
364 parseerror(parser, "Cannot add type %s from %s",
365 type_name[exprs[1]->expression.vtype],
366 type_name[exprs[0]->expression.vtype]);
371 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
372 exprs[0]->expression.vtype != TYPE_VECTOR &&
373 exprs[0]->expression.vtype != TYPE_FLOAT &&
374 exprs[1]->expression.vtype != TYPE_VECTOR &&
375 exprs[1]->expression.vtype != TYPE_FLOAT)
377 parseerror(parser, "Cannot multiply type %s from %s",
378 type_name[exprs[1]->expression.vtype],
379 type_name[exprs[0]->expression.vtype]);
382 switch (exprs[0]->expression.vtype) {
384 if (exprs[1]->expression.vtype == TYPE_VECTOR)
385 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
387 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
390 if (exprs[1]->expression.vtype == TYPE_FLOAT)
391 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
393 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
396 parseerror(parser, "Cannot add type %s from %s",
397 type_name[exprs[1]->expression.vtype],
398 type_name[exprs[0]->expression.vtype]);
403 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
404 exprs[0]->expression.vtype != TYPE_FLOAT)
406 parseerror(parser, "Cannot divide types %s and %s",
407 type_name[exprs[0]->expression.vtype],
408 type_name[exprs[1]->expression.vtype]);
411 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
417 parseerror(parser, "Cannot assign to non-variable");
420 out = (ast_expression*)ast_store_new(ctx,
421 type_store_instr[vars[0]->expression.vtype],
427 parseerror(parser, "failed to apply operand %s", op->op);
431 sy->out[sy->out_count++] = syexp(ctx, out);
435 static bool parser_close_paren(parser_t *parser, shunt *sy)
437 if (!sy->ops_count) {
438 parseerror(parser, "unmatched closing paren");
441 if (sy->ops[sy->ops_count-1].paren == 1) {
442 parseerror(parser, "empty parenthesis expression");
445 while (sy->ops_count) {
446 if (sy->ops[sy->ops_count-1].paren == 'f') {
447 /* was a function call */
452 if (sy->out_count < 2) {
453 parseerror(parser, "internal error: function call needs function and parameter list...");
457 fun = sy->out[sy->out_count+0].out;
458 params = sy->out[sy->out_count+1].block;
460 parseerror(parser, "function call needs a parameter-list as 2nd operand");
463 if (fun->expression.vtype != TYPE_FUNCTION) {
464 parseerror(parser, "not a function");
467 call = ast_call_new(sy->ops[sy->ops_count].ctx, fun);
469 parseerror(parser, "out of memory");
472 MEM_VECTOR_MOVE(params, exprs, call, params);
474 sy->out[sy->out_count++] = syexp(call->expression.node.context, (ast_expression*)call);
477 if (sy->ops[sy->ops_count-1].paren == 1) {
481 if (!parser_sy_pop(parser, sy))
487 static ast_expression* parser_expression(parser_t *parser)
489 ast_expression *expr = NULL;
493 MEM_VECTOR_INIT(&sy, out);
494 MEM_VECTOR_INIT(&sy, ops);
500 bool nextwant = true;
501 if (parser->tok == TOKEN_IDENT)
504 ast_value *var = parser_find_var(parser, parser_tokval(parser));
506 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
509 if (!shunt_out_add(&sy, syval(parser_ctx(parser), var))) {
510 parseerror(parser, "out of memory");
514 else if (parser->tok == TOKEN_FLOATCONST) {
515 ast_value *val = parser_const_float(parser, (parser_token(parser)->constval.f));
518 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
519 parseerror(parser, "out of memory");
523 else if (parser->tok == TOKEN_INTCONST) {
524 ast_value *val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
527 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
528 parseerror(parser, "out of memory");
532 else if (parser->tok == '(') {
533 nextwant = false; /* not expecting an operator next */
534 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1))) {
535 parseerror(parser, "out of memory");
540 /* TODO: prefix operators */
541 parseerror(parser, "expected statement");
545 parser->lex->flags.noops = !wantop;
547 if (parser->tok == '(') {
548 /* we expected an operator, this is the function-call operator */
550 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f'))) {
551 parseerror(parser, "out of memory");
554 empty = ast_block_new(parser_ctx(parser));
556 parseerror(parser, "out of memory");
559 if (!shunt_out_add(&sy, syblock(parser_ctx(parser), empty))) {
560 ast_block_delete(empty);
561 parseerror(parser, "out of memory");
565 else if (parser->tok == ')') {
566 /* we do expect an operator next */
567 /* closing an opening paren */
568 if (!parser_close_paren(parser, &sy))
571 else if (parser->tok != TOKEN_OPERATOR) {
572 parseerror(parser, "expected operator or end of statement");
576 /* classify the operator */
577 /* TODO: suffix operators */
579 const oper_info *olast = NULL;
581 for (o = 0; o < operator_count; ++o) {
582 if (!(operators[o].flags & OP_PREFIX) &&
583 !(operators[o].flags & OP_SUFFIX) && /* remove this */
584 !strcmp(parser_tokval(parser), operators[o].op))
589 if (o == operator_count) {
590 /* no operator found... must be the end of the statement */
593 /* found an operator */
596 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
597 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
600 (op->prec < olast->prec) ||
601 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
603 if (!parser_sy_pop(parser, &sy))
605 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
606 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
609 if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
613 parser->lex->flags.noops = true;
615 if (!parser_next(parser)) {
618 if (parser->tok == ';') {
622 if (!parser_next(parser)) {
623 parseerror(parser, "Unexpected end of file");
627 while (sy.ops_count) {
628 if (!parser_sy_pop(parser, &sy))
632 parser->lex->flags.noops = true;
634 parseerror(parser, "empty expression");
637 expr = sy.out[0].out;
638 MEM_VECTOR_CLEAR(&sy, out);
639 MEM_VECTOR_CLEAR(&sy, ops);
643 parser->lex->flags.noops = true;
644 MEM_VECTOR_CLEAR(&sy, out);
645 MEM_VECTOR_CLEAR(&sy, ops);
649 static bool parser_variable(parser_t *parser, ast_block *localblock);
650 static bool parser_body_do(parser_t *parser, ast_block *block)
652 if (parser->tok == TOKEN_TYPENAME)
655 if (!parser_variable(parser, block))
659 else if (parser->tok == TOKEN_KEYWORD)
661 if (!strcmp(parser_tokval(parser), "return"))
666 if (!parser_next(parser)) {
667 parseerror(parser, "expected return expression");
671 exp = parser_expression(parser);
674 ret = ast_return_new(exp->expression.node.context, exp);
679 if (!ast_block_exprs_add(block, (ast_expression*)ret)) {
685 parseerror(parser, "Unexpected keyword");
688 else if (parser->tok == '{')
691 parseerror(parser, "TODO: inner blocks: %s", parser_tokval(parser));
696 ast_expression *exp = parser_expression(parser);
699 if (!ast_block_exprs_add(block, exp)) {
707 static ast_block* parser_parse_block(parser_t *parser)
709 size_t oldblocklocal;
710 ast_block *block = NULL;
712 oldblocklocal = parser->blocklocal;
713 parser->blocklocal = parser->locals_count;
715 if (!parser_next(parser)) { /* skip the '{' */
716 parseerror(parser, "expected function body");
720 block = ast_block_new(parser_ctx(parser));
722 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
724 if (parser->tok == '}')
727 if (!parser_body_do(parser, block)) {
728 ast_block_delete(block);
734 if (parser->tok != '}') {
735 ast_block_delete(block);
738 (void)parser_next(parser);
742 parser->blocklocal = oldblocklocal;
746 static bool parser_variable(parser_t *parser, ast_block *localblock)
749 ast_function *func = NULL;
753 int basetype = parser_token(parser)->constval.t;
757 if (!parser_next(parser)) { /* skip basetype or comma */
758 parseerror(parser, "expected variable declaration");
764 ctx = parser_ctx(parser);
765 var = parser_parse_type(parser, basetype, &isfunc);
770 if (parser->tok != TOKEN_IDENT) {
771 parseerror(parser, "expected variable name\n");
775 if (!localblock && parser_find_global(parser, parser_tokval(parser))) {
776 ast_value_delete(var);
777 parseerror(parser, "global already exists: %s\n", parser_tokval(parser));
781 if (localblock && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
782 ast_value_delete(var);
783 parseerror(parser, "local variable already exists: %s\n", parser_tokval(parser));
787 if (!ast_value_set_name(var, parser_tokval(parser))) {
788 parseerror(parser, "failed to set variable name\n");
789 ast_value_delete(var);
794 /* a function was defined */
797 /* turn var into a value of TYPE_FUNCTION, with the old var
800 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
801 func = ast_function_new(ctx, var->name, fval);
802 if (!fval || !func) {
803 ast_value_delete(var);
804 if (fval) ast_value_delete(fval);
805 if (func) ast_function_delete(func);
809 fval->expression.next = (ast_expression*)var;
810 MEM_VECTOR_MOVE(var, params, fval, params);
812 if (!parser_t_functions_add(parser, func)) {
813 ast_value_delete(var);
814 if (fval) ast_value_delete(fval);
815 if (func) ast_function_delete(func);
822 if ( (!localblock && !parser_t_globals_add(parser, var)) ||
823 ( localblock && !parser_t_locals_add(parser, var)) )
825 ast_value_delete(var);
828 if (localblock && !ast_block_locals_add(localblock, var))
830 parser->locals_count--;
831 ast_value_delete(var);
835 if (!parser_next(parser)) {
836 ast_value_delete(var);
840 if (parser->tok == ';') {
841 if (!parser_next(parser))
842 return parser->tok == TOKEN_EOF;
846 if (parser->tok == ',') {
851 if (parser->tok != '=') {
852 parseerror(parser, "expected '=' or ';'");
856 if (!parser_next(parser))
859 if (parser->tok == '#') {
861 parseerror(parser, "cannot declare builtins within functions");
864 if (!isfunc || !func) {
865 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
868 if (!parser_next(parser)) {
869 parseerror(parser, "expected builtin number");
872 if (parser->tok != TOKEN_INTCONST) {
873 parseerror(parser, "builtin number must be an integer constant");
876 if (parser_token(parser)->constval.i <= 0) {
877 parseerror(parser, "builtin number must be positive integer greater than zero");
881 func->builtin = -parser_token(parser)->constval.i;
882 } else if (parser->tok == '{') {
885 ast_function *old = parser->function;
888 parseerror(parser, "cannot declare functions within functions");
892 parser->function = func;
893 block = parser_parse_block(parser);
894 parser->function = old;
899 if (!ast_function_blocks_add(func, block)) {
900 ast_block_delete(block);
905 parseerror(parser, "TODO, const assignment");
908 if (!parser_next(parser))
911 if (parser->tok == ',') {
916 if (parser->tok != ';') {
917 parseerror(parser, "expected semicolon");
921 (void)parser_next(parser);
927 static bool parser_do(parser_t *parser)
929 if (parser->tok == TOKEN_TYPENAME)
931 return parser_variable(parser, NULL);
933 else if (parser->tok == TOKEN_KEYWORD)
935 /* handle 'var' and 'const' */
938 else if (parser->tok == '.')
940 /* entity-member declaration */
945 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
951 bool parser_compile(const char *filename)
957 parser = (parser_t*)mem_a(sizeof(parser_t));
961 memset(parser, 0, sizeof(parser));
963 MEM_VECTOR_INIT(parser, globals);
964 MEM_VECTOR_INIT(parser, locals);
965 parser->lex = lex_open(filename);
968 printf("failed to open file \"%s\"\n", filename);
972 /* initial lexer/parser state */
973 parser->lex->flags.noops = true;
975 if (parser_next(parser))
977 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
979 if (!parser_do(parser)) {
980 if (parser->tok == TOKEN_EOF)
981 parseerror(parser, "unexpected eof");
983 parseerror(parser, "parse error\n");
984 lex_close(parser->lex);
991 lex_close(parser->lex);
993 ir = ir_builder_new("gmqcc_out");
995 printf("failed to allocate builder\n");
999 for (i = 0; i < parser->imm_float_count; ++i) {
1000 if (!ast_global_codegen(parser->imm_float[i], ir)) {
1001 printf("failed to generate global %s\n", parser->imm_float[i]->name);
1004 for (i = 0; i < parser->globals_count; ++i) {
1005 if (!ast_global_codegen(parser->globals[i], ir)) {
1006 printf("failed to generate global %s\n", parser->globals[i]->name);
1009 for (i = 0; i < parser->functions_count; ++i) {
1010 if (!ast_function_codegen(parser->functions[i], ir)) {
1011 printf("failed to generate function %s\n", parser->functions[i]->name);
1013 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
1014 printf("failed to finalize function %s\n", parser->functions[i]->name);
1018 ir_builder_dump(ir, printf);
1021 for (i = 0; i < parser->globals_count; ++i) {
1022 ast_value_delete(parser->globals[i]);
1024 MEM_VECTOR_CLEAR(parser, globals);