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Refactoring: Check types outside of AST and recover from some errors.

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chriseth
2015-09-21 20:03:05 +02:00
parent 352c196eb3
commit 34a81fd60e
33 changed files with 2295 additions and 1802 deletions
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libsolidity/ConstantEvaluator.cpp
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/*
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 2015
* Evaluator for types of constant expressions.
*/
#include <libsolidity/ConstantEvaluator.h>
#include <libsolidity/AST.h>
using namespace std;
using namespace dev;
using namespace dev::solidity;
void ConstantEvaluator::endVisit(UnaryOperation const& _operation)
{
TypePointer const& subType = _operation.subExpression().annotation().type;
if (!dynamic_cast<IntegerConstantType const*>(subType.get()))
BOOST_THROW_EXCEPTION(_operation.subExpression().createTypeError("Invalid constant expression."));
TypePointer t = subType->unaryOperatorResult(_operation.getOperator());
_operation.annotation().type = t;
}
void ConstantEvaluator::endVisit(BinaryOperation const& _operation)
{
TypePointer const& leftType = _operation.leftExpression().annotation().type;
TypePointer const& rightType = _operation.rightExpression().annotation().type;
if (!dynamic_cast<IntegerConstantType const*>(leftType.get()))
BOOST_THROW_EXCEPTION(_operation.leftExpression().createTypeError("Invalid constant expression."));
if (!dynamic_cast<IntegerConstantType const*>(rightType.get()))
BOOST_THROW_EXCEPTION(_operation.rightExpression().createTypeError("Invalid constant expression."));
TypePointer commonType = leftType->binaryOperatorResult(_operation.getOperator(), rightType);
if (Token::isCompareOp(_operation.getOperator()))
commonType = make_shared<BoolType>();
_operation.annotation().type = commonType;
}
void ConstantEvaluator::endVisit(Literal const& _literal)
{
_literal.annotation().type = Type::forLiteral(_literal);
if (!_literal.annotation().type)
BOOST_THROW_EXCEPTION(_literal.createTypeError("Invalid literal value."));
}