path: root/Parser.h

/*
    This file is part of cpp-ethereum.

    cpp-ethereum 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.

    cpp-ethereum 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 cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
*/
/**
 * @author Christian <c@ethdev.com>
 * @date 2014
 * Solidity parser.
 */

#pragma once

#include "libsolidity/AST.h"

namespace dev
{
namespace solidity
{

class Scanner;

class Parser
{
public:
    ptr<ContractDefinition> parse(std::shared_ptr<Scanner> const& _scanner);

private:
    class ASTNodeFactory;

    /// Start position of the current token
    int getPosition() const;
    /// End position of the current token
    int getEndPosition() const;

    /// Parsing functions for the AST nodes
    /// @{
    ptr<ContractDefinition> parseContractDefinition();
    ptr<FunctionDefinition> parseFunctionDefinition(bool _isPublic);
    ptr<StructDefinition> parseStructDefinition();
    ptr<VariableDeclaration> parseVariableDeclaration(bool _allowVar);
    ptr<TypeName> parseTypeName(bool _allowVar);
    ptr<Mapping> parseMapping();
    ptr<ParameterList> parseParameterList(bool _allowEmpty = true);
    ptr<Block> parseBlock();
    ptr<Statement> parseStatement();
    ptr<IfStatement> parseIfStatement();
    ptr<WhileStatement> parseWhileStatement();
    ptr<VariableDefinition> parseVariableDefinition();
    ptr<Expression> parseExpression();
    ptr<Expression> parseBinaryExpression(int _minPrecedence = 4);
    ptr<Expression> parseUnaryExpression();
    ptr<Expression> parseLeftHandSideExpression();
    ptr<Expression> parsePrimaryExpression();
    vecptr<Expression> parseFunctionCallArguments();
    /// @}

    /// Helper functions
    /// @{
    /// If current token value is not _value, throw exception otherwise advance token.
    void expectToken(Token::Value _value);
    Token::Value expectAssignmentOperator();
    ptr<ASTString> expectIdentifierToken();
    ptr<ASTString> getLiteralAndAdvance();
    void throwExpectationError(const std::string& _description);
    /// @}

    std::shared_ptr<Scanner> m_scanner;
};

}
}