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Gas estimates for JSON compiler.

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This commit is contained in:
chriseth 2015-06-01 13:25:02 +02:00
parent b6fa534868
commit 90c1203e56
1 changed files with 57 additions and 0 deletions
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57
jsonCompiler.cpp
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@ -27,6 +27,7 @@
#include <libdevcore/CommonData.h>
#include <libdevcore/CommonIO.h>
#include <libevmcore/Instruction.h>
#include <libevmcore/Params.h>
#include <libsolidity/Scanner.h>
#include <libsolidity/Parser.h>
#include <libsolidity/ASTPrinter.h>
@ -58,6 +59,61 @@ Json::Value functionHashes(ContractDefinition const& _contract)
return functionHashes;
}
Json::Value gasToJson(GasEstimator::GasConsumption const& _gas)
{
if (_gas.isInfinite || _gas.value > std::numeric_limits<Json::LargestUInt>::max())
return Json::Value(Json::nullValue);
else
return Json::Value(Json::LargestUInt(_gas.value));
}
Json::Value estimateGas(CompilerStack const& _compiler, string const& _contract)
{
Json::Value gasEstimates(Json::objectValue);
using Gas = GasEstimator::GasConsumption;
if (!_compiler.getAssemblyItems(_contract) && !_compiler.getRuntimeAssemblyItems(_contract))
return gasEstimates;
if (eth::AssemblyItems const* items = _compiler.getAssemblyItems(_contract))
{
Gas gas = GasEstimator::functionalEstimation(*items);
u256 bytecodeSize(_compiler.getRuntimeBytecode(_contract).size());
Json::Value creationGas(Json::arrayValue);
creationGas[0] = gasToJson(gas);
creationGas[1] = gasToJson(bytecodeSize * eth::c_createDataGas);
gasEstimates["creation"] = creationGas;
}
if (eth::AssemblyItems const* items = _compiler.getRuntimeAssemblyItems(_contract))
{
ContractDefinition const& contract = _compiler.getContractDefinition(_contract);
Json::Value externalFunctions(Json::objectValue);
for (auto it: contract.getInterfaceFunctions())
{
string sig = it.second->externalSignature();
externalFunctions[sig] = gasToJson(GasEstimator::functionalEstimation(*items, sig));
}
gasEstimates["external"] = externalFunctions;
Json::Value internalFunctions(Json::objectValue);
for (auto const& it: contract.getDefinedFunctions())
{
if (it->isPartOfExternalInterface() || it->isConstructor())
continue;
size_t entry = _compiler.getFunctionEntryPoint(_contract, *it);
GasEstimator::GasConsumption gas = GasEstimator::GasConsumption::infinite();
if (entry > 0)
gas = GasEstimator::functionalEstimation(*items, entry, *it);
FunctionType type(*it);
string sig = it->getName() + "(";
auto end = type.getParameterTypes().end();
for (auto it = type.getParameterTypes().begin(); it != end; ++it)
sig += (*it)->toString() + (it + 1 == end ? "" : ",");
sig += ")";
internalFunctions[sig] = gasToJson(gas);
}
gasEstimates["internal"] = internalFunctions;
}
return gasEstimates;
}
string compile(string _input, bool _optimize)
{
StringMap sources;
@ -109,6 +165,7 @@ string compile(string _input, bool _optimize)
contractData["bytecode"] = toHex(compiler.getBytecode(contractName));
contractData["opcodes"] = eth::disassemble(compiler.getBytecode(contractName));
contractData["functionHashes"] = functionHashes(compiler.getContractDefinition(contractName));
contractData["gasEstimates"] = estimateGas(compiler, contractName);
ostringstream unused;
contractData["assembly"] = compiler.streamAssembly(unused, contractName, sources, true);
output["contracts"][contractName] = contractData;