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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 2014
* Callgraph of functions inside a contract.
*/
#include <libsolidity/AST.h>
#include <libsolidity/CallGraph.h>
using namespace std;
namespace dev
{
namespace solidity
{
void CallGraph::addNode(ASTNode const& _node)
{
if (!m_nodesSeen.count(&_node))
{
m_workQueue.push(&_node);
m_nodesSeen.insert(&_node);
}
}
set<FunctionDefinition const*> const& CallGraph::getCalls()
{
computeCallGraph();
return m_functionsSeen;
}
void CallGraph::computeCallGraph()
{
while (!m_workQueue.empty())
{
m_workQueue.front()->accept(*this);
m_workQueue.pop();
}
}
bool CallGraph::visit(Identifier const& _identifier)
{
if (auto fun = dynamic_cast<FunctionDefinition const*>(_identifier.getReferencedDeclaration()))
{
if (m_functionOverrideResolver)
fun = (*m_functionOverrideResolver)(fun->getName());
solAssert(fun, "Error finding override for function " + fun->getName());
addNode(*fun);
}
if (auto modifier = dynamic_cast<ModifierDefinition const*>(_identifier.getReferencedDeclaration()))
{
if (m_modifierOverrideResolver)
modifier = (*m_modifierOverrideResolver)(modifier->getName());
solAssert(modifier, "Error finding override for modifier " + modifier->getName());
addNode(*modifier);
}
return true;
}
bool CallGraph::visit(FunctionDefinition const& _function)
{
m_functionsSeen.insert(&_function);
return true;
}
bool CallGraph::visit(MemberAccess const& _memberAccess)
{
// used for "BaseContract.baseContractFunction"
if (_memberAccess.getExpression().getType()->getCategory() == Type::Category::TYPE)
{
TypeType const& type = dynamic_cast<TypeType const&>(*_memberAccess.getExpression().getType());
if (type.getMembers().getMemberType(_memberAccess.getMemberName()))
{
ContractDefinition const& contract = dynamic_cast<ContractType const&>(*type.getActualType())
.getContractDefinition();
for (ASTPointer<FunctionDefinition> const& function: contract.getDefinedFunctions())
if (function->getName() == _memberAccess.getMemberName())
{
addNode(*function);
return true;
}
}
}
return true;
}
}
}
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