101 lines
3.8 KiB
C++
101 lines
3.8 KiB
C++
/*
|
|
* Copyright (c) 2021, Tim Flynn <trflynn89@pm.me>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#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; }
|
|
|
|
protected:
|
|
NonnullRefPtr<Expression> parse_expression(); // Protected for unit testing.
|
|
|
|
private:
|
|
struct ParserState {
|
|
explicit ParserState(Lexer);
|
|
|
|
Lexer m_lexer;
|
|
Token m_token;
|
|
Vector<Error> m_errors;
|
|
};
|
|
|
|
NonnullRefPtr<Statement> parse_statement();
|
|
NonnullRefPtr<Statement> parse_statement_with_expression_list(RefPtr<CommonTableExpressionList>);
|
|
NonnullRefPtr<CreateTable> parse_create_table_statement();
|
|
NonnullRefPtr<DropTable> parse_drop_table_statement();
|
|
NonnullRefPtr<Delete> parse_delete_statement(RefPtr<CommonTableExpressionList>);
|
|
NonnullRefPtr<Select> parse_select_statement(RefPtr<CommonTableExpressionList>);
|
|
NonnullRefPtr<CommonTableExpressionList> parse_common_table_expression_list();
|
|
|
|
NonnullRefPtr<Expression> parse_primary_expression();
|
|
NonnullRefPtr<Expression> parse_secondary_expression(NonnullRefPtr<Expression> primary);
|
|
bool match_secondary_expression() const;
|
|
Optional<NonnullRefPtr<Expression>> parse_literal_value_expression();
|
|
Optional<NonnullRefPtr<Expression>> parse_column_name_expression(String with_parsed_identifier = {}, bool with_parsed_period = false);
|
|
Optional<NonnullRefPtr<Expression>> parse_unary_operator_expression();
|
|
Optional<NonnullRefPtr<Expression>> parse_binary_operator_expression(NonnullRefPtr<Expression> lhs);
|
|
Optional<NonnullRefPtr<Expression>> parse_chained_expression();
|
|
Optional<NonnullRefPtr<Expression>> parse_cast_expression();
|
|
Optional<NonnullRefPtr<Expression>> parse_case_expression();
|
|
Optional<NonnullRefPtr<Expression>> parse_collate_expression(NonnullRefPtr<Expression> expression);
|
|
Optional<NonnullRefPtr<Expression>> parse_is_expression(NonnullRefPtr<Expression> expression);
|
|
Optional<NonnullRefPtr<Expression>> parse_match_expression(NonnullRefPtr<Expression> lhs, bool invert_expression);
|
|
Optional<NonnullRefPtr<Expression>> parse_null_expression(NonnullRefPtr<Expression> expression, bool invert_expression);
|
|
Optional<NonnullRefPtr<Expression>> parse_between_expression(NonnullRefPtr<Expression> expression, bool invert_expression);
|
|
Optional<NonnullRefPtr<Expression>> parse_in_expression(NonnullRefPtr<Expression> expression, bool invert_expression);
|
|
|
|
NonnullRefPtr<ColumnDefinition> parse_column_definition();
|
|
NonnullRefPtr<TypeName> parse_type_name();
|
|
NonnullRefPtr<SignedNumber> parse_signed_number();
|
|
NonnullRefPtr<CommonTableExpression> parse_common_table_expression();
|
|
NonnullRefPtr<QualifiedTableName> parse_qualified_table_name();
|
|
NonnullRefPtr<ReturningClause> parse_returning_clause();
|
|
NonnullRefPtr<ResultColumn> parse_result_column();
|
|
NonnullRefPtr<TableOrSubquery> parse_table_or_subquery();
|
|
NonnullRefPtr<OrderingTerm> parse_ordering_term();
|
|
|
|
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;
|
|
};
|
|
|
|
}
|