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)
93 for (i = parser->locals_count; i > upto;) {
95 if (!strcmp(parser->locals[i]->name, name))
96 return parser->locals[i];
101 ast_value* parser_find_var(parser_t *parser, const char *name)
104 v = parser_find_local(parser, name, 0);
105 if (!v) v = parser_find_global(parser, name);
110 MEM_VECTOR_MAKE(ast_value*, p);
112 MEM_VEC_FUNCTIONS(paramlist_t, ast_value*, p)
114 static ast_value *parser_parse_type(parser_t *parser, int basetype, bool *isfunc)
118 lex_ctx ctx = parser_ctx(parser);
119 int vtype = basetype;
122 MEM_VECTOR_INIT(¶ms, p);
126 if (parser->tok == '(') {
132 if (!parser_next(parser)) {
133 MEM_VECTOR_CLEAR(¶ms, p);
137 if (parser->tok == ')')
140 temptype = parser_token(parser)->constval.t;
141 if (!parser_next(parser)) {
142 MEM_VECTOR_CLEAR(¶ms, p);
145 param = parser_parse_type(parser, temptype, &dummy);
149 MEM_VECTOR_CLEAR(¶ms, p);
153 if (!paramlist_t_p_add(¶ms, param)) {
154 MEM_VECTOR_CLEAR(¶ms, p);
155 parseerror(parser, "Out of memory while parsing typename");
159 if (parser->tok == ',')
161 if (parser->tok == ')')
163 MEM_VECTOR_CLEAR(¶ms, p);
164 parseerror(parser, "Unexpected token");
167 if (!parser_next(parser)) {
168 MEM_VECTOR_CLEAR(¶ms, p);
173 var = ast_value_new(ctx, "<unnamed>", vtype);
175 MEM_VECTOR_CLEAR(¶ms, p);
178 MEM_VECTOR_MOVE(¶ms, p, var, params);
184 size_t etype; /* 0 = expression, others are operators */
187 ast_value *value; /* need to know if we can assign */
192 MEM_VECTOR_MAKE(sy_elem, out);
193 MEM_VECTOR_MAKE(sy_elem, ops);
195 MEM_VEC_FUNCTIONS(shunt, sy_elem, out)
196 MEM_VEC_FUNCTIONS(shunt, sy_elem, ops)
198 static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
207 static sy_elem syval(lex_ctx ctx, ast_value *v) {
210 e.out = (ast_expression*)v;
217 static sy_elem syop(lex_ctx ctx, const oper_info *op) {
219 e.etype = 1 + (op - operators);
227 static sy_elem syparen(lex_ctx ctx, int p) {
237 static bool parser_sy_pop(parser_t *parser, shunt *sy)
241 ast_expression *out = NULL;
242 ast_expression *exprs[3];
246 if (!sy->ops_count) {
247 parseerror(parser, "internal error: missing operator");
251 if (sy->ops[sy->ops_count-1].paren) {
252 parseerror(parser, "unmatched parenthesis");
256 op = &operators[sy->ops[sy->ops_count-1].etype - 1];
257 ctx = sy->ops[sy->ops_count-1].ctx;
259 if (sy->out_count < op->operands) {
260 parseerror(parser, "internal error: not enough operands: %i", sy->out_count);
266 sy->out_count -= op->operands;
267 for (i = 0; i < op->operands; ++i) {
268 exprs[i] = sy->out[sy->out_count+i].out;
269 vars[i] = sy->out[sy->out_count+i].value;
272 printf("Applying operator %s\n", op->op);
276 parseerror(parser, "internal error: unhandled operand");
280 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
281 parseerror(parser, "Cannot add type %s and %s",
282 type_name[exprs[0]->expression.vtype],
283 type_name[exprs[1]->expression.vtype]);
286 switch (exprs[0]->expression.vtype) {
288 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
291 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
294 parseerror(parser, "Cannot add type %s and %s",
295 type_name[exprs[0]->expression.vtype],
296 type_name[exprs[1]->expression.vtype]);
301 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
302 parseerror(parser, "Cannot subtract type %s from %s",
303 type_name[exprs[1]->expression.vtype],
304 type_name[exprs[0]->expression.vtype]);
307 switch (exprs[0]->expression.vtype) {
309 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
312 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
315 parseerror(parser, "Cannot add type %s from %s",
316 type_name[exprs[1]->expression.vtype],
317 type_name[exprs[0]->expression.vtype]);
322 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
323 exprs[0]->expression.vtype != TYPE_VECTOR &&
324 exprs[0]->expression.vtype != TYPE_FLOAT &&
325 exprs[1]->expression.vtype != TYPE_VECTOR &&
326 exprs[1]->expression.vtype != TYPE_FLOAT)
328 parseerror(parser, "Cannot multiply type %s from %s",
329 type_name[exprs[1]->expression.vtype],
330 type_name[exprs[0]->expression.vtype]);
333 switch (exprs[0]->expression.vtype) {
335 if (exprs[1]->expression.vtype == TYPE_VECTOR)
336 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
338 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
341 if (exprs[1]->expression.vtype == TYPE_FLOAT)
342 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
344 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
347 parseerror(parser, "Cannot add type %s from %s",
348 type_name[exprs[1]->expression.vtype],
349 type_name[exprs[0]->expression.vtype]);
354 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
355 exprs[0]->expression.vtype != TYPE_FLOAT)
357 parseerror(parser, "Cannot divide types %s and %s",
358 type_name[exprs[0]->expression.vtype],
359 type_name[exprs[1]->expression.vtype]);
362 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
368 parseerror(parser, "Cannot assign to non-variable");
371 out = (ast_expression*)ast_store_new(ctx,
372 type_store_instr[vars[0]->expression.vtype],
378 parseerror(parser, "failed to apply operand %s", op->op);
382 sy->out[sy->out_count++] = syexp(ctx, out);
386 static ast_expression* parser_expression(parser_t *parser)
388 ast_expression *expr = NULL;
392 MEM_VECTOR_INIT(&sy, out);
393 MEM_VECTOR_INIT(&sy, ops);
399 bool nextwant = true;
400 if (parser->tok == TOKEN_IDENT)
403 ast_value *var = parser_find_var(parser, parser_tokval(parser));
405 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
408 if (!shunt_out_add(&sy, syval(parser_ctx(parser), var))) {
409 parseerror(parser, "out of memory");
412 printf("Added: %s\n", var->name);
414 else if (parser->tok == TOKEN_FLOATCONST) {
415 ast_value *val = parser_const_float(parser, (parser_token(parser)->constval.f));
418 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
419 parseerror(parser, "out of memory");
423 else if (parser->tok == TOKEN_INTCONST) {
424 ast_value *val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
427 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
428 parseerror(parser, "out of memory");
431 printf("Added: %i\n", parser_token(parser)->constval.i);
433 else if (parser->tok == '(') {
434 nextwant = false; /* not expecting an operator next */
435 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1))) {
436 parseerror(parser, "out of memory");
441 /* TODO: prefix operators */
442 parseerror(parser, "expected statement");
446 parser->lex->flags.noops = !wantop;
448 if (parser->tok == ')') {
449 /* we do expect an operator next */
450 /* closing an opening paren */
451 printf("Applying closing paren\n");
453 parseerror(parser, "unmatched closing paren");
456 if (sy.ops[sy.ops_count-1].paren == 1) {
457 parseerror(parser, "empty parenthesis expression");
460 while (sy.ops_count) {
461 if (sy.ops[sy.ops_count-1].paren == 1) {
465 if (!parser_sy_pop(parser, &sy))
469 else if (parser->tok != TOKEN_OPERATOR) {
470 parseerror(parser, "expected operator or end of statement");
474 /* classify the operator */
475 /* TODO: suffix operators */
477 const oper_info *olast = NULL;
479 for (o = 0; o < operator_count; ++o) {
480 if (!(operators[o].flags & OP_PREFIX) &&
481 !(operators[o].flags & OP_SUFFIX) && /* remove this */
482 !strcmp(parser_tokval(parser), operators[o].op))
487 if (o == operator_count) {
488 /* no operator found... must be the end of the statement */
491 /* found an operator */
494 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
495 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
498 (op->prec < olast->prec) ||
499 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
501 if (!parser_sy_pop(parser, &sy))
503 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
504 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
507 if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
509 printf("Added op %s\n", op->op);
512 parser->lex->flags.noops = true;
514 if (!parser_next(parser)) {
517 if (parser->tok == ';') {
518 printf("End of statement\n");
522 if (!parser_next(parser)) {
523 parseerror(parser, "Unexpected end of file");
527 while (sy.ops_count) {
528 if (!parser_sy_pop(parser, &sy))
532 parser->lex->flags.noops = true;
534 parseerror(parser, "empty expression");
537 expr = sy.out[0].out;
538 MEM_VECTOR_CLEAR(&sy, out);
539 MEM_VECTOR_CLEAR(&sy, ops);
543 parser->lex->flags.noops = true;
544 MEM_VECTOR_CLEAR(&sy, out);
545 MEM_VECTOR_CLEAR(&sy, ops);
549 static bool parser_variable(parser_t *parser, ast_block *localblock);
550 static bool parser_body_do(parser_t *parser, ast_block *block)
552 if (parser->tok == TOKEN_TYPENAME)
555 if (!parser_variable(parser, block))
559 else if (parser->tok == '{')
562 parseerror(parser, "TODO: inner blocks");
567 ast_expression *exp = parser_expression(parser);
570 if (!ast_block_exprs_add(block, exp))
576 static ast_block* parser_parse_block(parser_t *parser)
578 size_t oldblocklocal;
579 ast_block *block = NULL;
581 oldblocklocal = parser->blocklocal;
582 parser->blocklocal = parser->locals_count;
584 if (!parser_next(parser)) { /* skip the '{' */
585 parseerror(parser, "expected function body");
589 block = ast_block_new(parser_ctx(parser));
591 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
593 if (parser->tok == '}')
596 if (!parser_body_do(parser, block)) {
597 ast_block_delete(block);
603 if (parser->tok != '}') {
604 ast_block_delete(block);
607 (void)parser_next(parser);
611 parser->blocklocal = oldblocklocal;
615 static bool parser_variable(parser_t *parser, ast_block *localblock)
618 ast_function *func = NULL;
622 int basetype = parser_token(parser)->constval.t;
626 if (!parser_next(parser)) { /* skip basetype or comma */
627 parseerror(parser, "expected variable declaration");
633 ctx = parser_ctx(parser);
634 var = parser_parse_type(parser, basetype, &isfunc);
639 if (parser->tok != TOKEN_IDENT) {
640 parseerror(parser, "expected variable name\n");
644 if (!localblock && parser_find_global(parser, parser_tokval(parser))) {
645 ast_value_delete(var);
646 parseerror(parser, "global already exists: %s\n", parser_tokval(parser));
650 if (localblock && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
651 ast_value_delete(var);
652 parseerror(parser, "local variable already exists: %s\n", parser_tokval(parser));
656 if (!ast_value_set_name(var, parser_tokval(parser))) {
657 parseerror(parser, "failed to set variable name\n");
658 ast_value_delete(var);
663 /* a function was defined */
666 /* turn var into a value of TYPE_FUNCTION, with the old var
669 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
670 func = ast_function_new(ctx, var->name, fval);
671 if (!fval || !func) {
672 ast_value_delete(var);
673 if (fval) ast_value_delete(fval);
674 if (func) ast_function_delete(func);
678 fval->expression.next = (ast_expression*)var;
679 MEM_VECTOR_MOVE(var, params, fval, params);
681 if (!parser_t_functions_add(parser, func)) {
682 ast_value_delete(var);
683 if (fval) ast_value_delete(fval);
684 if (func) ast_function_delete(func);
691 if ( (!localblock && !parser_t_globals_add(parser, var)) ||
692 ( localblock && !parser_t_locals_add(parser, var)) )
694 ast_value_delete(var);
697 if (localblock && !ast_block_locals_add(localblock, var))
699 parser->locals_count--;
700 ast_value_delete(var);
704 if (!parser_next(parser)) {
705 ast_value_delete(var);
709 if (parser->tok == ';') {
710 if (!parser_next(parser))
711 return parser->tok == TOKEN_EOF;
715 if (parser->tok == ',') {
720 if (parser->tok != '=') {
721 parseerror(parser, "expected '=' or ';'");
725 if (!parser_next(parser))
728 if (parser->tok == '#') {
730 parseerror(parser, "cannot declare builtins within functions");
733 if (!isfunc || !func) {
734 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
737 if (!parser_next(parser)) {
738 parseerror(parser, "expected builtin number");
741 if (parser->tok != TOKEN_INTCONST) {
742 parseerror(parser, "builtin number must be an integer constant");
745 if (parser_token(parser)->constval.i <= 0) {
746 parseerror(parser, "builtin number must be positive integer greater than zero");
750 func->builtin = -parser_token(parser)->constval.i;
751 } else if (parser->tok == '{') {
754 ast_function *old = parser->function;
757 parseerror(parser, "cannot declare functions within functions");
761 parser->function = func;
762 block = parser_parse_block(parser);
763 parser->function = old;
768 if (!ast_function_blocks_add(func, block)) {
769 ast_block_delete(block);
774 parseerror(parser, "TODO, const assignment");
777 if (!parser_next(parser))
780 if (parser->tok == ',') {
785 if (parser->tok != ';') {
786 parseerror(parser, "expected semicolon");
790 (void)parser_next(parser);
796 static bool parser_do(parser_t *parser)
798 if (parser->tok == TOKEN_TYPENAME)
800 return parser_variable(parser, NULL);
802 else if (parser->tok == TOKEN_KEYWORD)
804 /* handle 'var' and 'const' */
807 else if (parser->tok == '.')
809 /* entity-member declaration */
814 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
820 bool parser_compile(const char *filename)
826 parser = (parser_t*)mem_a(sizeof(parser_t));
830 memset(parser, 0, sizeof(parser));
832 MEM_VECTOR_INIT(parser, globals);
833 MEM_VECTOR_INIT(parser, locals);
834 parser->lex = lex_open(filename);
837 printf("failed to open file \"%s\"\n", filename);
841 /* initial lexer/parser state */
842 parser->lex->flags.noops = true;
844 if (parser_next(parser))
846 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
848 if (!parser_do(parser)) {
849 if (parser->tok == TOKEN_EOF)
850 parseerror(parser, "unexpected eof");
852 parseerror(parser, "parse error\n");
853 lex_close(parser->lex);
860 lex_close(parser->lex);
862 ir = ir_builder_new("gmqcc_out");
864 printf("failed to allocate builder\n");
868 for (i = 0; i < parser->imm_float_count; ++i) {
869 if (!ast_global_codegen(parser->imm_float[i], ir)) {
870 printf("failed to generate global %s\n", parser->imm_float[i]->name);
873 for (i = 0; i < parser->globals_count; ++i) {
874 if (!ast_global_codegen(parser->globals[i], ir)) {
875 printf("failed to generate global %s\n", parser->globals[i]->name);
878 for (i = 0; i < parser->functions_count; ++i) {
879 if (!ast_function_codegen(parser->functions[i], ir)) {
880 printf("failed to generate function %s\n", parser->functions[i]->name);
882 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
883 printf("failed to finalize function %s\n", parser->functions[i]->name);
887 ir_builder_dump(ir, printf);
890 for (i = 0; i < parser->globals_count; ++i) {
891 ast_value_delete(parser->globals[i]);
893 MEM_VECTOR_CLEAR(parser, globals);