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/*
This file is part of solidity.
solidity 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.
solidity 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 solidity. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Lefteris <lefteris@ethdev.com>
* @date 2015
* Converts the AST into json format
*/
#pragma once
#include <ostream>
#include <stack>
#include <libsolidity/ast/ASTVisitor.h>
#include <libsolidity/interface/Exceptions.h>
#include <libsolidity/ast/ASTAnnotations.h>
#include <json/json.h>
namespace dev
{
namespace solidity
{
/**
* Converter of the AST into JSON format
*/
class ASTJsonConverter: public ASTConstVisitor
{
public:
/// Create a converter to JSON for the given abstract syntax tree.
/// @a _legacy if true, use legacy format
/// @a _sourceIndices is used to abbreviate source names in source locations.
explicit ASTJsonConverter(
bool _legacy,
std::map<std::string, unsigned> _sourceIndices = std::map<std::string, unsigned>()
);
/// Output the json representation of the AST to _stream.
void print(std::ostream& _stream, ASTNode const& _node);
Json::Value&& toJson(ASTNode const& _node);
template <class T>
Json::Value toJson(std::vector<ASTPointer<T>> const& _nodes)
{
Json::Value ret(Json::arrayValue);
for (auto const& n: _nodes)
if (n)
appendMove(ret, toJson(*n));
else
ret.append(Json::nullValue);
return ret;
}
bool visit(SourceUnit const& _node) override;
bool visit(PragmaDirective const& _node) override;
bool visit(ImportDirective const& _node) override;
bool visit(ContractDefinition const& _node) override;
bool visit(InheritanceSpecifier const& _node) override;
bool visit(UsingForDirective const& _node) override;
bool visit(StructDefinition const& _node) override;
bool visit(EnumDefinition const& _node) override;
bool visit(EnumValue const& _node) override;
bool visit(ParameterList const& _node) override;
bool visit(FunctionDefinition const& _node) override;
bool visit(VariableDeclaration const& _node) override;
bool visit(ModifierDefinition const& _node) override;
bool visit(ModifierInvocation const& _node) override;
bool visit(EventDefinition const& _node) override;
bool visit(ElementaryTypeName const& _node) override;
bool visit(UserDefinedTypeName const& _node) override;
bool visit(FunctionTypeName const& _node) override;
bool visit(Mapping const& _node) override;
bool visit(ArrayTypeName const& _node) override;
bool visit(InlineAssembly const& _node) override;
bool visit(Block const& _node) override;
bool visit(PlaceholderStatement const& _node) override;
bool visit(IfStatement const& _node) override;
bool visit(WhileStatement const& _node) override;
bool visit(ForStatement const& _node) override;
bool visit(Continue const& _node) override;
bool visit(Break const& _node) override;
bool visit(Return const& _node) override;
bool visit(Throw const& _node) override;
bool visit(EmitStatement const& _node) override;
bool visit(VariableDeclarationStatement const& _node) override;
bool visit(ExpressionStatement const& _node) override;
bool visit(Conditional const& _node) override;
bool visit(Assignment const& _node) override;
bool visit(TupleExpression const& _node) override;
bool visit(UnaryOperation const& _node) override;
bool visit(BinaryOperation const& _node) override;
bool visit(FunctionCall const& _node) override;
bool visit(NewExpression const& _node) override;
bool visit(MemberAccess const& _node) override;
bool visit(IndexAccess const& _node) override;
bool visit(Identifier const& _node) override;
bool visit(ElementaryTypeNameExpression const& _node) override;
bool visit(Literal const& _node) override;
void endVisit(EventDefinition const&) override;
private:
void setJsonNode(
ASTNode const& _node,
std::string const& _nodeName,
std::initializer_list<std::pair<std::string, Json::Value>>&& _attributes
);
void setJsonNode(
ASTNode const& _node,
std::string const& _nodeName,
std::vector<std::pair<std::string, Json::Value>>&& _attributes
);
std::string sourceLocationToString(SourceLocation const& _location) const;
static std::string namePathToString(std::vector<ASTString> const& _namePath);
static Json::Value idOrNull(ASTNode const* _pt)
{
return _pt ? Json::Value(nodeId(*_pt)) : Json::nullValue;
}
Json::Value toJsonOrNull(ASTNode const* _node)
{
return _node ? toJson(*_node) : Json::nullValue;
}
Json::Value inlineAssemblyIdentifierToJson(std::pair<assembly::Identifier const* , InlineAssemblyAnnotation::ExternalIdentifierInfo> _info) const;
static std::string location(VariableDeclaration::Location _location);
static std::string contractKind(ContractDefinition::ContractKind _kind);
static std::string functionCallKind(FunctionCallKind _kind);
static std::string literalTokenKind(Token::Value _token);
static std::string type(Expression const& _expression);
static std::string type(VariableDeclaration const& _varDecl);
static int nodeId(ASTNode const& _node)
{
return _node.id();
}
template<class Container>
static Json::Value getContainerIds(Container const& container)
{
Json::Value tmp(Json::arrayValue);
for (auto const& element: container)
{
solAssert(element, "");
tmp.append(nodeId(*element));
}
return tmp;
}
static Json::Value typePointerToJson(TypePointer _tp);
static Json::Value typePointerToJson(std::shared_ptr<std::vector<TypePointer>> _tps);
void appendExpressionAttributes(
std::vector<std::pair<std::string, Json::Value>> &_attributes,
ExpressionAnnotation const& _annotation
);
static void appendMove(Json::Value& _array, Json::Value&& _value)
{
solAssert(_array.isArray(), "");
_array.append(std::move(_value));
}
bool m_legacy = false; ///< if true, use legacy format
bool m_inEvent = false; ///< whether we are currently inside an event or not
Json::Value m_currentValue;
std::map<std::string, unsigned> m_sourceIndices;
};
}
}
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