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- /*
- * Copyright (c) 2021, Tim Flynn <trflynn89@pm.me>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- #pragma once
- #include <AK/String.h>
- #include <AK/StringView.h>
- #include <LibSQL/AST.h>
- #include <LibSQL/Lexer.h>
- #include <LibSQL/Token.h>
- namespace SQL {
- class Parser {
- struct Position {
- size_t line { 0 };
- size_t column { 0 };
- };
- struct Error {
- String message;
- Position position;
- String to_string() const
- {
- return String::formatted("{} (line: {}, column: {})", message, position.line, position.column);
- }
- };
- public:
- explicit Parser(Lexer lexer);
- NonnullRefPtr<Statement> next_statement();
- bool has_errors() const { return m_parser_state.m_errors.size(); }
- const Vector<Error>& errors() const { return m_parser_state.m_errors; }
- private:
- struct ParserState {
- explicit ParserState(Lexer);
- Lexer m_lexer;
- Token m_token;
- Vector<Error> m_errors;
- };
- NonnullRefPtr<CreateTable> parse_create_table_statement();
- NonnullRefPtr<DropTable> parse_drop_table_statement();
- NonnullRefPtr<ColumnDefinition> parse_column_definition();
- NonnullRefPtr<TypeName> parse_type_name();
- NonnullRefPtr<SignedNumber> parse_signed_number();
- Token consume();
- Token consume(TokenType type);
- bool consume_if(TokenType type);
- bool match(TokenType type) const;
- void expected(StringView what);
- void syntax_error(String message);
- Position position() const;
- ParserState m_parser_state;
- };
- }
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