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;
302 parseerror(parser, "internal error: unhandled operand");
307 if (!ast_block_exprs_add(blocks[0], exprs[1]))
310 blocks[0] = ast_block_new(ctx);
311 if (!ast_block_exprs_add(blocks[0], exprs[0]) ||
312 !ast_block_exprs_add(blocks[0], exprs[1]))
317 if (!ast_block_set_type(blocks[0], exprs[1]))
323 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
324 parseerror(parser, "Cannot add type %s and %s",
325 type_name[exprs[0]->expression.vtype],
326 type_name[exprs[1]->expression.vtype]);
329 switch (exprs[0]->expression.vtype) {
331 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
334 out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
337 parseerror(parser, "Cannot add type %s and %s",
338 type_name[exprs[0]->expression.vtype],
339 type_name[exprs[1]->expression.vtype]);
344 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
345 parseerror(parser, "Cannot subtract type %s from %s",
346 type_name[exprs[1]->expression.vtype],
347 type_name[exprs[0]->expression.vtype]);
350 switch (exprs[0]->expression.vtype) {
352 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
355 out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
358 parseerror(parser, "Cannot add type %s from %s",
359 type_name[exprs[1]->expression.vtype],
360 type_name[exprs[0]->expression.vtype]);
365 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype &&
366 exprs[0]->expression.vtype != TYPE_VECTOR &&
367 exprs[0]->expression.vtype != TYPE_FLOAT &&
368 exprs[1]->expression.vtype != TYPE_VECTOR &&
369 exprs[1]->expression.vtype != TYPE_FLOAT)
371 parseerror(parser, "Cannot multiply type %s from %s",
372 type_name[exprs[1]->expression.vtype],
373 type_name[exprs[0]->expression.vtype]);
376 switch (exprs[0]->expression.vtype) {
378 if (exprs[1]->expression.vtype == TYPE_VECTOR)
379 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
381 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
384 if (exprs[1]->expression.vtype == TYPE_FLOAT)
385 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
387 out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
390 parseerror(parser, "Cannot add type %s from %s",
391 type_name[exprs[1]->expression.vtype],
392 type_name[exprs[0]->expression.vtype]);
397 if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
398 exprs[0]->expression.vtype != TYPE_FLOAT)
400 parseerror(parser, "Cannot divide types %s and %s",
401 type_name[exprs[0]->expression.vtype],
402 type_name[exprs[1]->expression.vtype]);
405 out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
411 parseerror(parser, "Cannot assign to non-variable");
414 out = (ast_expression*)ast_store_new(ctx,
415 type_store_instr[vars[0]->expression.vtype],
421 parseerror(parser, "failed to apply operand %s", op->op);
425 sy->out[sy->out_count++] = syexp(ctx, out);
429 static bool parser_close_paren(parser_t *parser, shunt *sy)
431 if (!sy->ops_count) {
432 parseerror(parser, "unmatched closing paren");
435 if (sy->ops[sy->ops_count-1].paren == 1) {
436 parseerror(parser, "empty parenthesis expression");
439 while (sy->ops_count) {
440 if (sy->ops[sy->ops_count-1].paren == 1) {
444 if (!parser_sy_pop(parser, sy))
450 static ast_expression* parser_expression(parser_t *parser)
452 ast_expression *expr = NULL;
456 MEM_VECTOR_INIT(&sy, out);
457 MEM_VECTOR_INIT(&sy, ops);
463 bool nextwant = true;
464 if (parser->tok == TOKEN_IDENT)
467 ast_value *var = parser_find_var(parser, parser_tokval(parser));
469 parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
472 if (!shunt_out_add(&sy, syval(parser_ctx(parser), var))) {
473 parseerror(parser, "out of memory");
477 else if (parser->tok == TOKEN_FLOATCONST) {
478 ast_value *val = parser_const_float(parser, (parser_token(parser)->constval.f));
481 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
482 parseerror(parser, "out of memory");
486 else if (parser->tok == TOKEN_INTCONST) {
487 ast_value *val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
490 if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
491 parseerror(parser, "out of memory");
495 else if (parser->tok == '(') {
496 nextwant = false; /* not expecting an operator next */
497 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1))) {
498 parseerror(parser, "out of memory");
503 /* TODO: prefix operators */
504 parseerror(parser, "expected statement");
508 parser->lex->flags.noops = !wantop;
510 if (parser->tok == '(') {
511 /* we expected an operator, this is the function-call operator */
512 if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f'))) {
513 parseerror(parser, "out of memory");
517 else if (parser->tok == ')') {
518 /* we do expect an operator next */
519 /* closing an opening paren */
520 if (!parser_close_paren(parser, &sy))
523 else if (parser->tok != TOKEN_OPERATOR) {
524 parseerror(parser, "expected operator or end of statement");
528 /* classify the operator */
529 /* TODO: suffix operators */
531 const oper_info *olast = NULL;
533 for (o = 0; o < operator_count; ++o) {
534 if (!(operators[o].flags & OP_PREFIX) &&
535 !(operators[o].flags & OP_SUFFIX) && /* remove this */
536 !strcmp(parser_tokval(parser), operators[o].op))
541 if (o == operator_count) {
542 /* no operator found... must be the end of the statement */
545 /* found an operator */
548 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
549 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
552 (op->prec < olast->prec) ||
553 (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
555 if (!parser_sy_pop(parser, &sy))
557 if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
558 olast = &operators[sy.ops[sy.ops_count-1].etype-1];
561 if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
565 parser->lex->flags.noops = true;
567 if (!parser_next(parser)) {
570 if (parser->tok == ';') {
574 if (!parser_next(parser)) {
575 parseerror(parser, "Unexpected end of file");
579 while (sy.ops_count) {
580 if (!parser_sy_pop(parser, &sy))
584 parser->lex->flags.noops = true;
586 parseerror(parser, "empty expression");
589 expr = sy.out[0].out;
590 MEM_VECTOR_CLEAR(&sy, out);
591 MEM_VECTOR_CLEAR(&sy, ops);
595 parser->lex->flags.noops = true;
596 MEM_VECTOR_CLEAR(&sy, out);
597 MEM_VECTOR_CLEAR(&sy, ops);
601 static bool parser_variable(parser_t *parser, ast_block *localblock);
602 static bool parser_body_do(parser_t *parser, ast_block *block)
604 if (parser->tok == TOKEN_TYPENAME)
607 if (!parser_variable(parser, block))
611 else if (parser->tok == TOKEN_KEYWORD)
613 if (!strcmp(parser_tokval(parser), "return"))
618 if (!parser_next(parser)) {
619 parseerror(parser, "expected return expression");
623 exp = parser_expression(parser);
626 ret = ast_return_new(exp->expression.node.context, exp);
631 if (!ast_block_exprs_add(block, (ast_expression*)ret)) {
637 parseerror(parser, "Unexpected keyword");
640 else if (parser->tok == '{')
643 parseerror(parser, "TODO: inner blocks: %s", parser_tokval(parser));
648 ast_expression *exp = parser_expression(parser);
651 if (!ast_block_exprs_add(block, exp)) {
659 static ast_block* parser_parse_block(parser_t *parser)
661 size_t oldblocklocal;
662 ast_block *block = NULL;
664 oldblocklocal = parser->blocklocal;
665 parser->blocklocal = parser->locals_count;
667 if (!parser_next(parser)) { /* skip the '{' */
668 parseerror(parser, "expected function body");
672 block = ast_block_new(parser_ctx(parser));
674 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
676 if (parser->tok == '}')
679 if (!parser_body_do(parser, block)) {
680 ast_block_delete(block);
686 if (parser->tok != '}') {
687 ast_block_delete(block);
690 (void)parser_next(parser);
694 parser->blocklocal = oldblocklocal;
698 static bool parser_variable(parser_t *parser, ast_block *localblock)
701 ast_function *func = NULL;
705 int basetype = parser_token(parser)->constval.t;
709 if (!parser_next(parser)) { /* skip basetype or comma */
710 parseerror(parser, "expected variable declaration");
716 ctx = parser_ctx(parser);
717 var = parser_parse_type(parser, basetype, &isfunc);
722 if (parser->tok != TOKEN_IDENT) {
723 parseerror(parser, "expected variable name\n");
727 if (!localblock && parser_find_global(parser, parser_tokval(parser))) {
728 ast_value_delete(var);
729 parseerror(parser, "global already exists: %s\n", parser_tokval(parser));
733 if (localblock && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
734 ast_value_delete(var);
735 parseerror(parser, "local variable already exists: %s\n", parser_tokval(parser));
739 if (!ast_value_set_name(var, parser_tokval(parser))) {
740 parseerror(parser, "failed to set variable name\n");
741 ast_value_delete(var);
746 /* a function was defined */
749 /* turn var into a value of TYPE_FUNCTION, with the old var
752 fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
753 func = ast_function_new(ctx, var->name, fval);
754 if (!fval || !func) {
755 ast_value_delete(var);
756 if (fval) ast_value_delete(fval);
757 if (func) ast_function_delete(func);
761 fval->expression.next = (ast_expression*)var;
762 MEM_VECTOR_MOVE(var, params, fval, params);
764 if (!parser_t_functions_add(parser, func)) {
765 ast_value_delete(var);
766 if (fval) ast_value_delete(fval);
767 if (func) ast_function_delete(func);
774 if ( (!localblock && !parser_t_globals_add(parser, var)) ||
775 ( localblock && !parser_t_locals_add(parser, var)) )
777 ast_value_delete(var);
780 if (localblock && !ast_block_locals_add(localblock, var))
782 parser->locals_count--;
783 ast_value_delete(var);
787 if (!parser_next(parser)) {
788 ast_value_delete(var);
792 if (parser->tok == ';') {
793 if (!parser_next(parser))
794 return parser->tok == TOKEN_EOF;
798 if (parser->tok == ',') {
803 if (parser->tok != '=') {
804 parseerror(parser, "expected '=' or ';'");
808 if (!parser_next(parser))
811 if (parser->tok == '#') {
813 parseerror(parser, "cannot declare builtins within functions");
816 if (!isfunc || !func) {
817 parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
820 if (!parser_next(parser)) {
821 parseerror(parser, "expected builtin number");
824 if (parser->tok != TOKEN_INTCONST) {
825 parseerror(parser, "builtin number must be an integer constant");
828 if (parser_token(parser)->constval.i <= 0) {
829 parseerror(parser, "builtin number must be positive integer greater than zero");
833 func->builtin = -parser_token(parser)->constval.i;
834 } else if (parser->tok == '{') {
837 ast_function *old = parser->function;
840 parseerror(parser, "cannot declare functions within functions");
844 parser->function = func;
845 block = parser_parse_block(parser);
846 parser->function = old;
851 if (!ast_function_blocks_add(func, block)) {
852 ast_block_delete(block);
857 parseerror(parser, "TODO, const assignment");
860 if (!parser_next(parser))
863 if (parser->tok == ',') {
868 if (parser->tok != ';') {
869 parseerror(parser, "expected semicolon");
873 (void)parser_next(parser);
879 static bool parser_do(parser_t *parser)
881 if (parser->tok == TOKEN_TYPENAME)
883 return parser_variable(parser, NULL);
885 else if (parser->tok == TOKEN_KEYWORD)
887 /* handle 'var' and 'const' */
890 else if (parser->tok == '.')
892 /* entity-member declaration */
897 parseerror(parser, "unexpected token: %s", parser->lex->tok->value);
903 bool parser_compile(const char *filename)
909 parser = (parser_t*)mem_a(sizeof(parser_t));
913 memset(parser, 0, sizeof(parser));
915 MEM_VECTOR_INIT(parser, globals);
916 MEM_VECTOR_INIT(parser, locals);
917 parser->lex = lex_open(filename);
920 printf("failed to open file \"%s\"\n", filename);
924 /* initial lexer/parser state */
925 parser->lex->flags.noops = true;
927 if (parser_next(parser))
929 while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
931 if (!parser_do(parser)) {
932 if (parser->tok == TOKEN_EOF)
933 parseerror(parser, "unexpected eof");
935 parseerror(parser, "parse error\n");
936 lex_close(parser->lex);
943 lex_close(parser->lex);
945 ir = ir_builder_new("gmqcc_out");
947 printf("failed to allocate builder\n");
951 for (i = 0; i < parser->imm_float_count; ++i) {
952 if (!ast_global_codegen(parser->imm_float[i], ir)) {
953 printf("failed to generate global %s\n", parser->imm_float[i]->name);
956 for (i = 0; i < parser->globals_count; ++i) {
957 if (!ast_global_codegen(parser->globals[i], ir)) {
958 printf("failed to generate global %s\n", parser->globals[i]->name);
961 for (i = 0; i < parser->functions_count; ++i) {
962 if (!ast_function_codegen(parser->functions[i], ir)) {
963 printf("failed to generate function %s\n", parser->functions[i]->name);
965 if (!ir_function_finalize(parser->functions[i]->ir_func)) {
966 printf("failed to finalize function %s\n", parser->functions[i]->name);
970 ir_builder_dump(ir, printf);
973 for (i = 0; i < parser->globals_count; ++i) {
974 ast_value_delete(parser->globals[i]);
976 MEM_VECTOR_CLEAR(parser, globals);