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 */
189 MEM_VECTOR_MAKE(sy_elem, out);
190 MEM_VECTOR_MAKE(sy_elem, ops);
192 MEM_VEC_FUNCTIONS(shynt, sy_elem, out)
193 MEM_VEC_FUNCTIONS(shynt, sy_elem, ops)
195 static sy_elem syexp(ast_expression *v) {
201 static sy_elem syval(ast_value *v) { return syexp((ast_expression*)v); }
203 static sy_elem syop(const oper_info *op) {
205 e.etype = 1 + (op - operators);
210 static bool parser_sy_pop(parser_t *parser, shynt *sy)
215 static ast_expression* parser_expression(parser_t *parser)
217 ast_expression *expr = NULL;
221 MEM_VECTOR_INIT(&sy, out);
222 MEM_VECTOR_INIT(&sy, ops);
228 if (parser->tok == TOKEN_IDENT)
231 ast_value *var = parser_find_var(parser, parser_tokval(parser));
233 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
236 if (!shynt_out_add(&sy, syval(var))) {
237 parseerror(parser, "out of memory");
240 } else if (parser->tok == TOKEN_FLOATCONST) {
241 ast_value *val = parser_const_float(parser, (parser_token(parser)->constval.f));
244 if (!shynt_out_add(&sy, syval(val))) {
245 parseerror(parser, "out of memory");
248 } else if (parser->tok == TOKEN_INTCONST) {
249 ast_value *val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
252 if (!shynt_out_add(&sy, syval(val))) {
253 parseerror(parser, "out of memory");
257 /* TODO: prefix operators */
258 parseerror(parser, "expected statement");
262 parser->lex->flags.noops = false;
263 if (!parser_next(parser)) {
267 if (parser->tok != TOKEN_OPERATOR) {
268 parseerror(parser, "expected operator or end of statement");
271 /* classify the operator */
272 /* TODO: suffix operators */
274 const oper_info *olast = NULL;
276 for (o = 0; o < operator_count; ++o) {
277 if (!(operators[o].flags & OP_PREFIX) &&
278 !(operators[o].flags & OP_SUFFIX) && /* remove this */
279 !strcmp(parser_tokval(parser), operators[o].op))
284 if (o == operator_count) {
285 /* no operator found... must be the end of the statement */
288 /* found an operator */
292 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
295 (op->prec < olast->prec) ||
296 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
298 if (!parser_sy_pop(parser, &sy))
300 olast = sy.ops_count ? (&operators[sy.ops[sy.ops_count-1].etype-1]) : NULL;
303 if (!shynt_ops_add(&sy, syop(op)))
307 parser->lex->flags.noops = true;
308 if (!parser_next(parser)) {
314 while (sy.ops_count) {
315 if (!parser_sy_pop(parser, &sy))
319 parser->lex->flags.noops = true;
321 parseerror(parser, "empty expression");
324 expr = sy.out[0].out;
325 MEM_VECTOR_CLEAR(&sy, out);
326 MEM_VECTOR_CLEAR(&sy, ops);
330 parser->lex->flags.noops = true;
331 MEM_VECTOR_CLEAR(&sy, out);
332 MEM_VECTOR_CLEAR(&sy, ops);
336 static bool parser_variable(parser_t *parser, bool global);
337 static bool parser_body_do(parser_t *parser, ast_block *block)
339 if (parser->tok == TOKEN_TYPENAME)
342 if (!parser_variable(parser, false))
346 else if (parser->tok == '{')
349 parseerror(parser, "TODO: inner blocks");
354 ast_expression *exp = parser_expression(parser);
357 if (!ast_block_exprs_add(block, exp))
363 static ast_block* parser_parse_block(parser_t *parser)
365 size_t oldblocklocal;
366 ast_block *block = NULL;
368 oldblocklocal = parser->blocklocal;
369 parser->blocklocal = parser->locals_count;
371 if (!parser_next(parser)) { /* skip the '{' */
372 parseerror(parser, "expected function body");
376 block = ast_block_new(parser_ctx(parser));
378 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
380 if (parser->tok == '}')
383 if (!parser_body_do(parser, block)) {
384 ast_block_delete(block);
390 if (parser->tok != '}') {
391 ast_block_delete(block);
394 (void)parser_next(parser);
398 parser->blocklocal = oldblocklocal;
402 static bool parser_variable(parser_t *parser, bool global)
405 ast_function *func = NULL;
409 int basetype = parser_token(parser)->constval.t;
413 if (!parser_next(parser)) { /* skip basetype or comma */
414 parseerror(parser, "expected variable declaration");
420 ctx = parser_ctx(parser);
421 var = parser_parse_type(parser, basetype, &isfunc);
426 if (parser->tok != TOKEN_IDENT) {
427 parseerror(parser, "expected variable name\n");
431 if (global && parser_find_global(parser, parser_tokval(parser))) {
432 ast_value_delete(var);
433 parseerror(parser, "global already exists: %s\n", parser_tokval(parser));
437 if (!global && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
438 ast_value_delete(var);
439 parseerror(parser, "local variable already exists: %s\n", parser_tokval(parser));
443 if (!ast_value_set_name(var, parser_tokval(parser))) {
444 parseerror(parser, "failed to set variable name\n");
445 ast_value_delete(var);
450 /* a function was defined */
453 /* turn var into a value of TYPE_FUNCTION, with the old var
456 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
457 func = ast_function_new(ctx, var->name, fval);
458 if (!fval || !func) {
459 ast_value_delete(var);
460 if (fval) ast_value_delete(fval);
461 if (func) ast_function_delete(func);
465 fval->expression.next = (ast_expression*)var;
466 MEM_VECTOR_MOVE(var, params, fval, params);
468 if (!parser_t_functions_add(parser, func)) {
469 ast_value_delete(var);
470 if (fval) ast_value_delete(fval);
471 if (func) ast_function_delete(func);
478 if ( ( global && !parser_t_globals_add(parser, var)) ||
479 (!global && !parser_t_locals_add(parser, var)) )
481 ast_value_delete(var);
485 if (!parser_next(parser)) {
486 ast_value_delete(var);
490 if (parser->tok == ';') {
491 if (!parser_next(parser))
492 return parser->tok == TOKEN_EOF;
496 if (parser->tok == ',') {
501 if (parser->tok != '=') {
502 parseerror(parser, "expected '=' or ';'");
506 if (!parser_next(parser))
509 if (parser->tok == '#') {
511 parseerror(parser, "cannot declare builtins within functions");
514 if (!isfunc || !func) {
515 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
518 if (!parser_next(parser)) {
519 parseerror(parser, "expected builtin number");
522 if (parser->tok != TOKEN_INTCONST) {
523 parseerror(parser, "builtin number must be an integer constant");
526 if (parser_token(parser)->constval.i <= 0) {
527 parseerror(parser, "builtin number must be positive integer greater than zero");
531 func->builtin = -parser_token(parser)->constval.i;
532 } else if (parser->tok == '{') {
535 ast_function *old = parser->function;
538 parseerror(parser, "cannot declare functions within functions");
542 parser->function = func;
543 block = parser_parse_block(parser);
544 parser->function = old;
549 if (!ast_function_blocks_add(func, block)) {
550 ast_block_delete(block);
555 parseerror(parser, "TODO, const assignment");
558 if (!parser_next(parser))
561 if (parser->tok == ',') {
566 if (parser->tok != ';') {
567 parseerror(parser, "expected semicolon");
571 (void)parser_next(parser);
577 static bool parser_do(parser_t *parser)
579 if (parser->tok == TOKEN_TYPENAME)
581 return parser_variable(parser, true);
583 else if (parser->tok == TOKEN_KEYWORD)
585 /* handle 'var' and 'const' */
588 else if (parser->tok == '.')
590 /* entity-member declaration */
595 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
601 bool parser_compile(const char *filename)
607 parser = (parser_t*)mem_a(sizeof(parser_t));
611 memset(parser, 0, sizeof(parser));
613 MEM_VECTOR_INIT(parser, globals);
614 MEM_VECTOR_INIT(parser, locals);
615 parser->lex = lex_open(filename);
618 printf("failed to open file \"%s\"\n", filename);
622 /* initial lexer/parser state */
623 parser->lex->flags.noops = true;
625 if (parser_next(parser))
627 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
629 if (!parser_do(parser)) {
630 if (parser->tok == TOKEN_EOF)
631 parseerror(parser, "unexpected eof");
633 parseerror(parser, "parse error\n");
634 lex_close(parser->lex);
641 lex_close(parser->lex);
643 ir = ir_builder_new("gmqcc_out");
645 printf("failed to allocate builder\n");
649 for (i = 0; i < parser->imm_float_count; ++i) {
650 if (!ast_global_codegen(parser->imm_float[i], ir)) {
651 printf("failed to generate global %s\n", parser->imm_float[i]->name);
654 for (i = 0; i < parser->globals_count; ++i) {
655 if (!ast_global_codegen(parser->globals[i], ir)) {
656 printf("failed to generate global %s\n", parser->globals[i]->name);
659 for (i = 0; i < parser->functions_count; ++i) {
660 if (!ast_function_codegen(parser->functions[i], ir)) {
661 printf("failed to generate function %s\n", parser->functions[i]->name);
663 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
664 printf("failed to finalize function %s\n", parser->functions[i]->name);
668 ir_builder_dump(ir, printf);
671 for (i = 0; i < parser->globals_count; ++i) {
672 ast_value_delete(parser->globals[i]);
674 MEM_VECTOR_CLEAR(parser, globals);