From e927a4b22115e0461db6feeee891256b10650c0e Mon Sep 17 00:00:00 2001 From: Johnny Richard Date: Fri, 14 Apr 2023 23:10:25 +0200 Subject: parser: Create parser for function with return statements This is a very limited parser implementation which parses a single function with return type i32 and body containing a return number statement. The parser doesn't show the 'filepath:row:col' when it fails, a future improvement would be display it to easy find where the compilation problem is located. The ast_nodes are taking the token.value ownership (which is a really bad design since not all token.value ownership has been taken causing memory leaking) but we never free them. For a future fix we could use a string_view instead since we never change the original source code. The string_view will also improve the performance a lot avoiding unnecessary heap memory allocation. Signed-off-by: Johnny Richard --- src/parser.h | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 src/parser.h (limited to 'src/parser.h') diff --git a/src/parser.h b/src/parser.h new file mode 100644 index 0000000..e9a1cb7 --- /dev/null +++ b/src/parser.h @@ -0,0 +1,45 @@ +/* +* Copyright (C) 2023 Johnny Richard +* +* This program is free software: you can redistribute it and/or modify +* it under the terms of the GNU General Public License as published by +* the Free Software Foundation, either version 3 of the License, or +* (at your option) any later version. +* +* This program is distributed in the hope that it will be useful, +* but WITHOUT ANY WARRANTY; without even the implied warranty of +* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +* GNU General Public License for more details. +* +* You should have received a copy of the GNU General Public License +* along with this program. If not, see . +*/ +#ifndef PARSER_H +#define PARSER_H + +#include "lexer.h" + +typedef struct parser_t { + lexer_t *lexer; +} parser_t; + +typedef enum { + TYPE_I32 +} type_t; + +typedef struct ast_return_stmt_t { + uint32_t number; +} ast_return_stmt_t; + +typedef struct ast_function_t { + char *name; + type_t return_type; + ast_return_stmt_t body; +} ast_function_t; + +void parser_init(parser_t *parser, lexer_t *lexer); + +ast_function_t parser_parse_function(parser_t *parser); + +#endif /* PARSER_H */ + -- cgit v1.2.3