solidity/test/libyul/EWasmTranslationTest.cpp

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2019-11-19 22:08:33 +00:00
/*
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/>.
*/
#include <test/libyul/EWasmTranslationTest.h>
#include <test/tools/yulInterpreter/Interpreter.h>
#include <test/Options.h>
#include <libyul/backends/evm/EVMDialect.h>
#include <libyul/backends/wasm/WasmDialect.h>
#include <libyul/backends/wasm/EVMToEWasmTranslator.h>
#include <libyul/AsmParser.h>
#include <libyul/AssemblyStack.h>
#include <libyul/AsmAnalysisInfo.h>
#include <liblangutil/ErrorReporter.h>
#include <liblangutil/SourceReferenceFormatter.h>
#include <libdevcore/AnsiColorized.h>
#include <boost/test/unit_test.hpp>
#include <boost/algorithm/string.hpp>
#include <fstream>
using namespace dev;
using namespace langutil;
using namespace yul;
using namespace yul::test;
using namespace dev::solidity;
using namespace dev::solidity::test;
using namespace std;
EWasmTranslationTest::EWasmTranslationTest(string const& _filename)
{
boost::filesystem::path path(_filename);
ifstream file(_filename);
if (!file)
BOOST_THROW_EXCEPTION(runtime_error("Cannot open test case: \"" + _filename + "\"."));
file.exceptions(ios::badbit);
m_source = parseSourceAndSettings(file);
m_expectation = parseSimpleExpectations(file);
}
TestCase::TestResult EWasmTranslationTest::run(ostream& _stream, string const& _linePrefix, bool const _formatted)
{
if (!parse(_stream, _linePrefix, _formatted))
return TestResult::FatalError;
*m_object = EVMToEWasmTranslator(
EVMDialect::strictAssemblyForEVMObjects(dev::test::Options::get().evmVersion())
).run(*m_object);
// Add call to "main()".
m_object->code->statements.emplace_back(
ExpressionStatement{{}, FunctionCall{{}, Identifier{{}, "main"_yulstring}, {}}}
);
m_obtainedResult = interpret();
if (m_expectation != m_obtainedResult)
{
string nextIndentLevel = _linePrefix + " ";
AnsiColorized(_stream, _formatted, {formatting::BOLD, formatting::CYAN}) << _linePrefix << "Expected result:" << endl;
// TODO could compute a simple diff with highlighted lines
printIndented(_stream, m_expectation, nextIndentLevel);
AnsiColorized(_stream, _formatted, {formatting::BOLD, formatting::CYAN}) << _linePrefix << "Obtained result:" << endl;
printIndented(_stream, m_obtainedResult, nextIndentLevel);
return TestResult::Failure;
}
return TestResult::Success;
}
void EWasmTranslationTest::printSource(ostream& _stream, string const& _linePrefix, bool const) const
{
printIndented(_stream, m_source, _linePrefix);
}
void EWasmTranslationTest::printUpdatedExpectations(ostream& _stream, string const& _linePrefix) const
{
printIndented(_stream, m_obtainedResult, _linePrefix);
}
void EWasmTranslationTest::printIndented(ostream& _stream, string const& _output, string const& _linePrefix) const
{
stringstream output(_output);
string line;
while (getline(output, line))
_stream << _linePrefix << line << endl;
}
bool EWasmTranslationTest::parse(ostream& _stream, string const& _linePrefix, bool const _formatted)
{
AssemblyStack stack(
dev::test::Options::get().evmVersion(),
AssemblyStack::Language::StrictAssembly,
dev::solidity::OptimiserSettings::none()
);
if (stack.parseAndAnalyze("", m_source))
{
m_object = stack.parserResult();
return true;
}
else
{
AnsiColorized(_stream, _formatted, {formatting::BOLD, formatting::RED}) << _linePrefix << "Error parsing source." << endl;
printErrors(_stream, stack.errors());
return false;
}
}
string EWasmTranslationTest::interpret()
{
InterpreterState state;
state.maxTraceSize = 10000;
state.maxSteps = 10000;
WasmDialect dialect;
Interpreter interpreter(state, dialect);
try
{
interpreter(*m_object->code);
}
catch (InterpreterTerminatedGeneric const&)
{
}
stringstream result;
state.dumpTraceAndState(result);
return result.str();
}
void EWasmTranslationTest::printErrors(ostream& _stream, ErrorList const& _errors)
{
SourceReferenceFormatter formatter(_stream);
for (auto const& error: _errors)
formatter.printErrorInformation(*error);
}