cerc-io/solidity
16
0
Fork 0
mirror of https://github.com/ethereum/solidity synced 2023-10-03 13:03:40 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Move gasEstimate into CompilerStack

Browse Source
This commit is contained in:
Alex Beregszaszi 2017-04-10 14:00:24 +01:00
parent bd48f181b5
commit e6221108b6
2 changed files with 88 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

85
libsolidity/interface/CompilerStack.cpp
View File

@ -38,6 +38,7 @@
#include <libsolidity/analysis/SyntaxChecker.h>
#include <libsolidity/codegen/Compiler.h>
#include <libsolidity/interface/InterfaceHandler.h>
#include <libsolidity/interface/GasEstimator.h>
#include <libsolidity/formal/Why3Translator.h>
#include <libevmasm/Exceptions.h>
@ -841,3 +842,87 @@ string CompilerStack::computeSourceMapping(eth::AssemblyItems const& _items) con
}
return ret;
}
namespace
{
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 CompilerStack::gasEstimates(string const& _contractName) const
{
if (!assemblyItems(_contractName) && !runtimeAssemblyItems(_contractName))
return Json::Value();
using Gas = GasEstimator::GasConsumption;
Json::Value output(Json::objectValue);
if (eth::AssemblyItems const* items = assemblyItems(_contractName))
{
Gas executionGas = GasEstimator::functionalEstimation(*items);
u256 bytecodeSize(runtimeObject(_contractName).bytecode.size());
Gas codeDepositGas = bytecodeSize * eth::GasCosts::createDataGas;
Json::Value creation(Json::objectValue);
creation["codeDepositCost"] = gasToJson(codeDepositGas);
creation["executionCost"] = gasToJson(executionGas);
/// TODO: implement + overload to avoid the need of +=
executionGas += codeDepositGas;
creation["totalCost"] = gasToJson(executionGas);
output["creation"] = creation;
}
if (eth::AssemblyItems const* items = runtimeAssemblyItems(_contractName))
{
/// External functions
ContractDefinition const& contract = contractDefinition(_contractName);
Json::Value externalFunctions(Json::objectValue);
for (auto it: contract.interfaceFunctions())
{
string sig = it.second->externalSignature();
externalFunctions[sig] = gasToJson(GasEstimator::functionalEstimation(*items, sig));
}
if (contract.fallbackFunction())
/// This needs to be set to an invalid signature in order to trigger the fallback,
/// without the shortcut (of CALLDATSIZE == 0), and therefore to receive the upper bound.
/// An empty string ("") would work to trigger the shortcut only.
externalFunctions[""] = gasToJson(GasEstimator::functionalEstimation(*items, "INVALID"));
if (!externalFunctions.empty())
output["external"] = externalFunctions;
/// Internal functions
Json::Value internalFunctions(Json::objectValue);
for (auto const& it: contract.definedFunctions())
{
if (it->isPartOfExternalInterface() || it->isConstructor())
continue;
size_t entry = functionEntryPoint(_contractName, *it);
GasEstimator::GasConsumption gas = GasEstimator::GasConsumption::infinite();
if (entry > 0)
gas = GasEstimator::functionalEstimation(*items, entry, *it);
FunctionType type(*it);
string sig = it->name() + "(";
auto paramTypes = type.parameterTypes();
for (auto it = paramTypes.begin(); it != paramTypes.end(); ++it)
sig += (*it)->toString() + (it + 1 == paramTypes.end() ? "" : ",");
sig += ")";
internalFunctions[sig] = gasToJson(gas);
}
if (!internalFunctions.empty())
output["internal"] = internalFunctions;
}
return output;
}

3
libsolidity/interface/CompilerStack.h
View File

@ -173,6 +173,9 @@ public:
std::string const& onChainMetadata(std::string const& _contractName) const;
void useMetadataLiteralSources(bool _metadataLiteralSources) { m_metadataLiteralSources = _metadataLiteralSources; }
/// @returns a JSON representing the estimated gas usage for contract creation, internal and external functions
Json::Value gasEstimates(std::string const& _contractName) const;
/// @returns the previously used scanner, useful for counting lines during error reporting.
Scanner const& scanner(std::string const& _sourceName = "") const;
/// @returns the parsed source unit with the supplied name.