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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/>.
*/
/**
* Utilities to handle the Contract ABI (https://github.com/ethereum/wiki/wiki/Ethereum-Contract-ABI)
*/
#include <libsolidity/interface/ABI.h>
#include <libsolidity/ast/AST.h>
using namespace std;
using namespace dev;
using namespace dev::solidity;
Json::Value ABI::generate(ContractDefinition const& _contractDef)
{
Json::Value abi(Json::arrayValue);
for (auto it: _contractDef.interfaceFunctions())
{
auto externalFunctionType = it.second->interfaceFunctionType();
solAssert(!!externalFunctionType, "");
Json::Value method;
method["type"] = "function";
method["name"] = it.second->declaration().name();
// TODO: deprecate constant in a future release
method["constant"] = externalFunctionType->stateMutability() == StateMutability::Pure || it.second->stateMutability() == StateMutability::View;
method["payable"] = externalFunctionType->isPayable();
method["stateMutability"] = stateMutabilityToString(externalFunctionType->stateMutability());
method["inputs"] = formatTypeList(
externalFunctionType->parameterNames(),
externalFunctionType->parameterTypes(),
_contractDef.isLibrary()
);
method["outputs"] = formatTypeList(
externalFunctionType->returnParameterNames(),
externalFunctionType->returnParameterTypes(),
_contractDef.isLibrary()
);
abi.append(method);
}
if (_contractDef.constructor())
{
auto externalFunctionType = FunctionType(*_contractDef.constructor(), false).interfaceFunctionType();
solAssert(!!externalFunctionType, "");
Json::Value method;
method["type"] = "constructor";
method["payable"] = externalFunctionType->isPayable();
method["stateMutability"] = stateMutabilityToString(externalFunctionType->stateMutability());
method["inputs"] = formatTypeList(
externalFunctionType->parameterNames(),
externalFunctionType->parameterTypes(),
_contractDef.isLibrary()
);
abi.append(method);
}
if (_contractDef.fallbackFunction())
{
auto externalFunctionType = FunctionType(*_contractDef.fallbackFunction(), false).interfaceFunctionType();
solAssert(!!externalFunctionType, "");
Json::Value method;
method["type"] = "fallback";
method["payable"] = externalFunctionType->isPayable();
method["stateMutability"] = stateMutabilityToString(externalFunctionType->stateMutability());
abi.append(method);
}
for (auto const& it: _contractDef.interfaceEvents())
{
Json::Value event;
event["type"] = "event";
event["name"] = it->name();
event["anonymous"] = it->isAnonymous();
Json::Value params(Json::arrayValue);
for (auto const& p: it->parameters())
{
auto type = p->annotation().type->interfaceType(false);
solAssert(type, "");
Json::Value input;
auto param = formatType(p->name(), *type, false);
param["indexed"] = p->isIndexed();
params.append(param);
}
event["inputs"] = params;
abi.append(event);
}
return abi;
}
Json::Value ABI::formatTypeList(
vector<string> const& _names,
vector<TypePointer> const& _types,
bool _forLibrary
)
{
Json::Value params(Json::arrayValue);
solAssert(_names.size() == _types.size(), "Names and types vector size does not match");
for (unsigned i = 0; i < _names.size(); ++i)
{
solAssert(_types[i], "");
params.append(formatType(_names[i], *_types[i], _forLibrary));
}
return params;
}
Json::Value ABI::formatType(string const& _name, Type const& _type, bool _forLibrary)
{
Json::Value ret;
ret["name"] = _name;
string suffix = (_forLibrary && _type.dataStoredIn(DataLocation::Storage)) ? " storage" : "";
if (_type.isValueType() || (_forLibrary && _type.dataStoredIn(DataLocation::Storage)))
ret["type"] = _type.canonicalName() + suffix;
else if (ArrayType const* arrayType = dynamic_cast<ArrayType const*>(&_type))
{
if (arrayType->isByteArray())
ret["type"] = _type.canonicalName() + suffix;
else
{
string suffix;
if (arrayType->isDynamicallySized())
suffix = "[]";
else
suffix = string("[") + arrayType->length().str() + "]";
solAssert(arrayType->baseType(), "");
Json::Value subtype = formatType("", *arrayType->baseType(), _forLibrary);
if (subtype.isMember("components"))
{
ret["type"] = subtype["type"].asString() + suffix;
ret["components"] = subtype["components"];
}
else
ret["type"] = subtype["type"].asString() + suffix;
}
}
else if (StructType const* structType = dynamic_cast<StructType const*>(&_type))
{
ret["type"] = "tuple";
ret["components"] = Json::arrayValue;
for (auto const& member: structType->members(nullptr))
{
solAssert(member.type, "");
auto t = member.type->interfaceType(_forLibrary);
solAssert(t, "");
ret["components"].append(formatType(member.name, *t, _forLibrary));
}
}
else
solAssert(false, "Invalid type.");
return ret;
}
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