solidity/ASTVisitor.h
Christian 7f19f3d133 Contract compiler and also add ExpressionStatement to AST.
ExpressionStatement functions as glue between Statements and Expressions.

This way it is possible to detect when the border between statements and
expressions is crossed while walking the AST. Note that ExpressionStatement is
not the only border, almost every statement can contains expressions.
2014-10-30 01:25:42 +01:00

109 lines
4.3 KiB
C++

/*
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
* AST visitor base class.
*/
#pragma once
#include <libsolidity/ASTForward.h>
#include <string>
namespace dev
{
namespace solidity
{
/// Visitor interface for the abstract syntax tree. This class is tightly bound to the
/// implementation of @ref ASTNode::accept and its overrides. After a call to
/// @ref ASTNode::accept, the function visit for the appropriate parameter is called and then
/// (if it returns true) this continues recursively for all child nodes in document order
/// (there is an exception for contracts). After all child nodes have been visited, endVisit is
/// called for the node.
class ASTVisitor
{
public:
virtual bool visit(ASTNode&) { return true; }
virtual bool visit(ContractDefinition&) { return true; }
virtual bool visit(StructDefinition&) { return true; }
virtual bool visit(ParameterList&) { return true; }
virtual bool visit(FunctionDefinition&) { return true; }
virtual bool visit(VariableDeclaration&) { return true; }
virtual bool visit(TypeName&) { return true; }
virtual bool visit(ElementaryTypeName&) { return true; }
virtual bool visit(UserDefinedTypeName&) { return true; }
virtual bool visit(Mapping&) { return true; }
virtual bool visit(Statement&) { return true; }
virtual bool visit(Block&) { return true; }
virtual bool visit(IfStatement&) { return true; }
virtual bool visit(BreakableStatement&) { return true; }
virtual bool visit(WhileStatement&) { return true; }
virtual bool visit(Continue&) { return true; }
virtual bool visit(Break&) { return true; }
virtual bool visit(Return&) { return true; }
virtual bool visit(VariableDefinition&) { return true; }
virtual bool visit(ExpressionStatement&) { return true; }
virtual bool visit(Expression&) { return true; }
virtual bool visit(Assignment&) { return true; }
virtual bool visit(UnaryOperation&) { return true; }
virtual bool visit(BinaryOperation&) { return true; }
virtual bool visit(FunctionCall&) { return true; }
virtual bool visit(MemberAccess&) { return true; }
virtual bool visit(IndexAccess&) { return true; }
virtual bool visit(PrimaryExpression&) { return true; }
virtual bool visit(Identifier&) { return true; }
virtual bool visit(ElementaryTypeNameExpression&) { return true; }
virtual bool visit(Literal&) { return true; }
virtual void endVisit(ASTNode&) { }
virtual void endVisit(ContractDefinition&) { }
virtual void endVisit(StructDefinition&) { }
virtual void endVisit(ParameterList&) { }
virtual void endVisit(FunctionDefinition&) { }
virtual void endVisit(VariableDeclaration&) { }
virtual void endVisit(TypeName&) { }
virtual void endVisit(ElementaryTypeName&) { }
virtual void endVisit(UserDefinedTypeName&) { }
virtual void endVisit(Mapping&) { }
virtual void endVisit(Statement&) { }
virtual void endVisit(Block&) { }
virtual void endVisit(IfStatement&) { }
virtual void endVisit(BreakableStatement&) { }
virtual void endVisit(WhileStatement&) { }
virtual void endVisit(Continue&) { }
virtual void endVisit(Break&) { }
virtual void endVisit(Return&) { }
virtual void endVisit(VariableDefinition&) { }
virtual void endVisit(ExpressionStatement&) { }
virtual void endVisit(Expression&) { }
virtual void endVisit(Assignment&) { }
virtual void endVisit(UnaryOperation&) { }
virtual void endVisit(BinaryOperation&) { }
virtual void endVisit(FunctionCall&) { }
virtual void endVisit(MemberAccess&) { }
virtual void endVisit(IndexAccess&) { }
virtual void endVisit(PrimaryExpression&) { }
virtual void endVisit(Identifier&) { }
virtual void endVisit(ElementaryTypeNameExpression&) { }
virtual void endVisit(Literal&) { }
};
}
}