solidity/ASTPrinter.cpp

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/*
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This file is part of cpp-ethereum.
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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.
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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.
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You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Pretty-printer for the abstract syntax tree (the "pretty" is arguable), used for debugging.
*/
#include <libsolidity/ASTPrinter.h>
#include <libsolidity/AST.h>
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using namespace std;
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namespace dev
{
namespace solidity
{
ASTPrinter::ASTPrinter(ASTNode& _ast, string const& _source):
m_indentation(0), m_source(_source), m_ast(&_ast)
{
}
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void ASTPrinter::print(ostream& _stream)
{
m_ostream = &_stream;
m_ast->accept(*this);
m_ostream = nullptr;
}
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bool ASTPrinter::visit(ImportDirective& _node)
{
writeLine("ImportDirective \"" + _node.getIdentifier() + "\"");
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printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(ContractDefinition& _node)
{
writeLine("ContractDefinition \"" + _node.getName() + "\"");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(StructDefinition& _node)
{
writeLine("StructDefinition \"" + _node.getName() + "\"");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(ParameterList& _node)
{
writeLine("ParameterList");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(FunctionDefinition& _node)
{
writeLine("FunctionDefinition \"" + _node.getName() + "\"" +
(_node.isPublic() ? " - public" : "") +
(_node.isDeclaredConst() ? " - const" : ""));
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(VariableDeclaration& _node)
{
writeLine("VariableDeclaration \"" + _node.getName() + "\"");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(TypeName& _node)
{
writeLine("TypeName");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(ElementaryTypeName& _node)
{
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writeLine(string("ElementaryTypeName ") + Token::toString(_node.getTypeName()));
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(UserDefinedTypeName& _node)
{
writeLine("UserDefinedTypeName \"" + _node.getName() + "\"");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(Mapping& _node)
{
writeLine("Mapping");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(Statement& _node)
{
writeLine("Statement");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(Block& _node)
{
writeLine("Block");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(IfStatement& _node)
{
writeLine("IfStatement");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(BreakableStatement& _node)
{
writeLine("BreakableStatement");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(WhileStatement& _node)
{
writeLine("WhileStatement");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(Continue& _node)
{
writeLine("Continue");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(Break& _node)
{
writeLine("Break");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(Return& _node)
{
writeLine("Return");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(VariableDefinition& _node)
{
writeLine("VariableDefinition");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(ExpressionStatement& _node)
{
writeLine("ExpressionStatement");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(Expression& _node)
{
writeLine("Expression");
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printType(_node);
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(Assignment& _node)
{
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writeLine(string("Assignment using operator ") + Token::toString(_node.getAssignmentOperator()));
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printType(_node);
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(UnaryOperation& _node)
{
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writeLine(string("UnaryOperation (") + (_node.isPrefixOperation() ? "prefix" : "postfix") +
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") " + Token::toString(_node.getOperator()));
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printType(_node);
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(BinaryOperation& _node)
{
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writeLine(string("BinaryOperation using operator ") + Token::toString(_node.getOperator()));
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printType(_node);
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(FunctionCall& _node)
{
writeLine("FunctionCall");
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printType(_node);
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(MemberAccess& _node)
{
writeLine("MemberAccess to member " + _node.getMemberName());
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printType(_node);
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(IndexAccess& _node)
{
writeLine("IndexAccess");
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printType(_node);
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(PrimaryExpression& _node)
{
writeLine("PrimaryExpression");
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printType(_node);
printSourcePart(_node);
return goDeeper();
}
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bool ASTPrinter::visit(Identifier& _node)
{
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writeLine(string("Identifier ") + _node.getName());
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printType(_node);
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printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(ElementaryTypeNameExpression& _node)
{
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writeLine(string("ElementaryTypeNameExpression ") + Token::toString(_node.getTypeToken()));
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printType(_node);
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(Literal& _node)
{
char const* tokenString = Token::toString(_node.getToken());
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if (!tokenString)
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tokenString = "[no token]";
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writeLine(string("Literal, token: ") + tokenString + " value: " + _node.getValue());
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printType(_node);
printSourcePart(_node);
return goDeeper();
}
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void ASTPrinter::endVisit(ImportDirective&)
{
m_indentation--;
}
void ASTPrinter::endVisit(ContractDefinition&)
{
m_indentation--;
}
void ASTPrinter::endVisit(StructDefinition&)
{
m_indentation--;
}
void ASTPrinter::endVisit(ParameterList&)
{
m_indentation--;
}
void ASTPrinter::endVisit(FunctionDefinition&)
{
m_indentation--;
}
void ASTPrinter::endVisit(VariableDeclaration&)
{
m_indentation--;
}
void ASTPrinter::endVisit(TypeName&)
{
m_indentation--;
}
void ASTPrinter::endVisit(ElementaryTypeName&)
{
m_indentation--;
}
void ASTPrinter::endVisit(UserDefinedTypeName&)
{
m_indentation--;
}
void ASTPrinter::endVisit(Mapping&)
{
m_indentation--;
}
void ASTPrinter::endVisit(Statement&)
{
m_indentation--;
}
void ASTPrinter::endVisit(Block&)
{
m_indentation--;
}
void ASTPrinter::endVisit(IfStatement&)
{
m_indentation--;
}
void ASTPrinter::endVisit(BreakableStatement&)
{
m_indentation--;
}
void ASTPrinter::endVisit(WhileStatement&)
{
m_indentation--;
}
void ASTPrinter::endVisit(Continue&)
{
m_indentation--;
}
void ASTPrinter::endVisit(Break&)
{
m_indentation--;
}
void ASTPrinter::endVisit(Return&)
{
m_indentation--;
}
void ASTPrinter::endVisit(VariableDefinition&)
{
m_indentation--;
}
void ASTPrinter::endVisit(ExpressionStatement&)
{
m_indentation--;
}
void ASTPrinter::endVisit(Expression&)
{
m_indentation--;
}
void ASTPrinter::endVisit(Assignment&)
{
m_indentation--;
}
void ASTPrinter::endVisit(UnaryOperation&)
{
m_indentation--;
}
void ASTPrinter::endVisit(BinaryOperation&)
{
m_indentation--;
}
void ASTPrinter::endVisit(FunctionCall&)
{
m_indentation--;
}
void ASTPrinter::endVisit(MemberAccess&)
{
m_indentation--;
}
void ASTPrinter::endVisit(IndexAccess&)
{
m_indentation--;
}
void ASTPrinter::endVisit(PrimaryExpression&)
{
m_indentation--;
}
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void ASTPrinter::endVisit(Identifier&)
{
m_indentation--;
}
void ASTPrinter::endVisit(ElementaryTypeNameExpression&)
{
m_indentation--;
}
void ASTPrinter::endVisit(Literal&)
{
m_indentation--;
}
void ASTPrinter::printSourcePart(ASTNode const& _node)
{
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if (!m_source.empty())
{
Location const& location(_node.getLocation());
*m_ostream << getIndentation() << " Source: "
<< escaped(m_source.substr(location.start, location.end - location.start), false) << endl;
}
}
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void ASTPrinter::printType(Expression const& _expression)
{
if (_expression.getType())
*m_ostream << getIndentation() << " Type: " << _expression.getType()->toString() << "\n";
else
*m_ostream << getIndentation() << " Type unknown.\n";
}
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string ASTPrinter::getIndentation() const
{
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return string(m_indentation * 2, ' ');
}
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void ASTPrinter::writeLine(string const& _line)
{
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*m_ostream << getIndentation() << _line << endl;
}
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}
}