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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 Lefteris <lefteris@ethdev.com>
* @date 2015
* Converts the AST into json format
*/
#include <libsolidity/ASTJsonConverter.h>
#include <libsolidity/AST.h>
using namespace std;
namespace dev
{
namespace solidity
{
void ASTJsonConverter::addKeyValue(Json::Value& _obj, string const& _key, string const& _val)
{
// special handling for booleans
if (_key == "const" || _key == "public" || _key == "local" ||
_key == "lvalue" || _key == "local_lvalue" || _key == "prefix")
_obj[_key] = (_val == "1") ? true : false;
else
// else simply add it as a string
_obj[_key] = _val;
}
void ASTJsonConverter::addJsonNode(string const& _nodeName,
initializer_list<pair<string const, string const>> _list,
bool _hasChildren = false)
{
Json::Value node;
node["name"] = _nodeName;
if (_list.size() != 0)
{
Json::Value attrs;
for (auto& e: _list)
addKeyValue(attrs, e.first, e.second);
node["attributes"] = attrs;
}
m_jsonNodePtrs.top()->append(node);
if (_hasChildren)
{
Json::Value& addedNode = (*m_jsonNodePtrs.top())[m_jsonNodePtrs.top()->size() - 1];
Json::Value children(Json::arrayValue);
addedNode["children"] = children;
m_jsonNodePtrs.push(&addedNode["children"]);
}
}
ASTJsonConverter::ASTJsonConverter(ASTNode const& _ast): m_ast(&_ast)
{
Json::Value children(Json::arrayValue);
m_astJson["name"] = "root";
m_astJson["children"] = children;
m_jsonNodePtrs.push(&m_astJson["children"]);
}
void ASTJsonConverter::print(ostream& _stream)
{
process();
_stream << m_astJson;
}
Json::Value const& ASTJsonConverter::json()
{
process();
return m_astJson;
}
bool ASTJsonConverter::visit(ImportDirective const& _node)
{
addJsonNode("Import", { make_pair("file", _node.getIdentifier())});
return true;
}
bool ASTJsonConverter::visit(ContractDefinition const& _node)
{
addJsonNode("Contract", { make_pair("name", _node.getName()) }, true);
return true;
}
bool ASTJsonConverter::visit(StructDefinition const& _node)
{
addJsonNode("Struct", { make_pair("name", _node.getName()) }, true);
return true;
}
bool ASTJsonConverter::visit(ParameterList const&)
{
addJsonNode("ParameterList", {}, true);
return true;
}
bool ASTJsonConverter::visit(FunctionDefinition const& _node)
{
addJsonNode("Function",
{ make_pair("name", _node.getName()),
make_pair("public", boost::lexical_cast<std::string>(_node.isPublic())),
make_pair("const", boost::lexical_cast<std::string>(_node.isDeclaredConst())) },
true);
return true;
}
bool ASTJsonConverter::visit(VariableDeclaration const& _node)
{
addJsonNode("VariableDeclaration", { make_pair("name", _node.getName()) }, true);
return true;
}
bool ASTJsonConverter::visit(TypeName const&)
{
return true;
}
bool ASTJsonConverter::visit(ElementaryTypeName const& _node)
{
addJsonNode("ElementaryTypeName", { make_pair("name", Token::toString(_node.getTypeName())) });
return true;
}
bool ASTJsonConverter::visit(UserDefinedTypeName const& _node)
{
addJsonNode("UserDefinedTypeName", { make_pair("name", _node.getName()) });
return true;
}
bool ASTJsonConverter::visit(Mapping const&)
{
addJsonNode("Mapping", {}, true);
return true;
}
bool ASTJsonConverter::visit(Block const&)
{
addJsonNode("Block", {}, true);
return true;
}
bool ASTJsonConverter::visit(IfStatement const&)
{
addJsonNode("IfStatement", {}, true);
return true;
}
bool ASTJsonConverter::visit(WhileStatement const&)
{
addJsonNode("WhileStatement", {}, true);
return true;
}
bool ASTJsonConverter::visit(ForStatement const&)
{
addJsonNode("ForStatement", {}, true);
return true;
}
bool ASTJsonConverter::visit(Continue const&)
{
addJsonNode("Continue", {});
return true;
}
bool ASTJsonConverter::visit(Break const&)
{
addJsonNode("Break", {});
return true;
}
bool ASTJsonConverter::visit(Return const&)
{
addJsonNode("Return", {}, true);;
return true;
}
bool ASTJsonConverter::visit(VariableDeclarationStatement const&)
{
addJsonNode("VariableDefinition", {}, true);
return true;
}
bool ASTJsonConverter::visit(ExpressionStatement const&)
{
addJsonNode("ExpressionStatement", {}, true);
return true;
}
bool ASTJsonConverter::visit(Assignment const& _node)
{
addJsonNode("Assignment",
{ make_pair("operator", Token::toString(_node.getAssignmentOperator())),
make_pair("type", getType(_node)) },
true);
return true;
}
bool ASTJsonConverter::visit(UnaryOperation const& _node)
{
addJsonNode("UnaryOperation",
{ make_pair("prefix", boost::lexical_cast<std::string>(_node.isPrefixOperation())),
make_pair("operator", Token::toString(_node.getOperator())),
make_pair("type", getType(_node)) },
true);
return true;
}
bool ASTJsonConverter::visit(BinaryOperation const& _node)
{
addJsonNode("BinaryOperation",
{ make_pair("operator", Token::toString(_node.getOperator())),
make_pair("type", getType(_node))},
true);
return true;
}
bool ASTJsonConverter::visit(FunctionCall const& _node)
{
addJsonNode("FunctionCall",
{ make_pair("type_conversion", boost::lexical_cast<std::string>(_node.isTypeConversion())),
make_pair("type", getType(_node)) },
true);
return true;
}
bool ASTJsonConverter::visit(NewExpression const& _node)
{
addJsonNode("NewExpression", { make_pair("type", getType(_node)) }, true);
return true;
}
bool ASTJsonConverter::visit(MemberAccess const& _node)
{
addJsonNode("MemberAccess",
{ make_pair("member_name", _node.getMemberName()),
make_pair("type", getType(_node)) },
true);
return true;
}
bool ASTJsonConverter::visit(IndexAccess const& _node)
{
addJsonNode("IndexAccess", { make_pair("type", getType(_node)) }, true);
return true;
}
bool ASTJsonConverter::visit(Identifier const& _node)
{
addJsonNode("Identifier",
{ make_pair("value", _node.getName()), make_pair("type", getType(_node)) });
return true;
}
bool ASTJsonConverter::visit(ElementaryTypeNameExpression const& _node)
{
addJsonNode("ElementaryTypenameExpression",
{ make_pair("value", Token::toString(_node.getTypeToken())), make_pair("type", getType(_node)) });
return true;
}
bool ASTJsonConverter::visit(Literal const& _node)
{
char const* tokenString = Token::toString(_node.getToken());
addJsonNode("Literal",
{ make_pair("string", (tokenString) ? tokenString : "null"),
make_pair("value", _node.getValue()),
make_pair("type", getType(_node)) });
return true;
}
void ASTJsonConverter::endVisit(ImportDirective const&)
{
}
void ASTJsonConverter::endVisit(ContractDefinition const&)
{
goUp();
}
void ASTJsonConverter::endVisit(StructDefinition const&)
{
goUp();
}
void ASTJsonConverter::endVisit(ParameterList const&)
{
goUp();
}
void ASTJsonConverter::endVisit(FunctionDefinition const&)
{
goUp();
}
void ASTJsonConverter::endVisit(VariableDeclaration const&)
{
}
void ASTJsonConverter::endVisit(TypeName const&)
{
}
void ASTJsonConverter::endVisit(ElementaryTypeName const&)
{
}
void ASTJsonConverter::endVisit(UserDefinedTypeName const&)
{
}
void ASTJsonConverter::endVisit(Mapping const&)
{
}
void ASTJsonConverter::endVisit(Block const&)
{
goUp();
}
void ASTJsonConverter::endVisit(IfStatement const&)
{
goUp();
}
void ASTJsonConverter::endVisit(WhileStatement const&)
{
goUp();
}
void ASTJsonConverter::endVisit(ForStatement const&)
{
goUp();
}
void ASTJsonConverter::endVisit(Continue const&)
{
}
void ASTJsonConverter::endVisit(Break const&)
{
}
void ASTJsonConverter::endVisit(Return const&)
{
goUp();
}
void ASTJsonConverter::endVisit(VariableDeclarationStatement const&)
{
goUp();
}
void ASTJsonConverter::endVisit(ExpressionStatement const&)
{
goUp();
}
void ASTJsonConverter::endVisit(Assignment const&)
{
goUp();
}
void ASTJsonConverter::endVisit(UnaryOperation const&)
{
goUp();
}
void ASTJsonConverter::endVisit(BinaryOperation const&)
{
goUp();
}
void ASTJsonConverter::endVisit(FunctionCall const&)
{
goUp();
}
void ASTJsonConverter::endVisit(NewExpression const&)
{
goUp();
}
void ASTJsonConverter::endVisit(MemberAccess const&)
{
goUp();
}
void ASTJsonConverter::endVisit(IndexAccess const&)
{
goUp();
}
void ASTJsonConverter::endVisit(Identifier const&)
{
}
void ASTJsonConverter::endVisit(ElementaryTypeNameExpression const&)
{
}
void ASTJsonConverter::endVisit(Literal const&)
{
}
void ASTJsonConverter::process()
{
if (!processed)
m_ast->accept(*this);
processed = true;
}
string ASTJsonConverter::getType(Expression const& _expression)
{
return (_expression.getType()) ? _expression.getType()->toString() : "Unknown";
}
}
}