mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
648 lines
16 KiB
C++
648 lines
16 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <test/libsolidity/util/TestFileParser.h>
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#include <test/Options.h>
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#include <liblangutil/Common.h>
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#include <boost/algorithm/string.hpp>
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#include <boost/algorithm/string/predicate.hpp>
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#include <boost/optional.hpp>
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#include <boost/throw_exception.hpp>
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#include <fstream>
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#include <memory>
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#include <stdexcept>
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using namespace dev;
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using namespace langutil;
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using namespace solidity;
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using namespace dev::solidity::test;
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using namespace std;
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using namespace soltest;
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namespace
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{
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enum class DeclaredAlignment
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{
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Left,
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Right,
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None,
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};
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inline bytes alignLeft(bytes _bytes)
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{
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return std::move(_bytes) + bytes(32 - _bytes.size(), 0);
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}
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inline bytes alignRight(bytes _bytes)
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{
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return bytes(32 - _bytes.size(), 0) + std::move(_bytes);
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}
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inline bytes applyAlign(DeclaredAlignment _alignment, ABIType& _abiType, bytes _converted)
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{
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if (_alignment != DeclaredAlignment::None)
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_abiType.alignDeclared = true;
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switch (_alignment)
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{
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case DeclaredAlignment::Left:
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_abiType.align = ABIType::AlignLeft;
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return alignLeft(std::move(_converted));
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case DeclaredAlignment::Right:
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_abiType.align = ABIType::AlignRight;
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return alignRight(std::move(_converted));
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default:
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_abiType.align = ABIType::AlignRight;
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return alignRight(std::move(_converted));
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}
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}
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}
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char TestFileParser::Scanner::peek() const noexcept
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{
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if (std::distance(m_char, m_line.end()) < 2)
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return '\0';
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auto next = m_char;
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std::advance(next, 1);
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return *next;
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}
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vector<dev::solidity::test::FunctionCall> TestFileParser::parseFunctionCalls()
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{
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vector<FunctionCall> calls;
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if (!accept(Token::EOS))
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{
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assert(m_scanner.currentToken() == Token::Unknown);
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m_scanner.scanNextToken();
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while (!accept(Token::EOS))
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{
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if (!accept(Token::Whitespace))
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{
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FunctionCall call;
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/// If this is not the first call in the test,
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/// the last call to parseParameter could have eaten the
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/// new line already. This could only be fixed with a one
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/// token lookahead that checks parseParameter
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/// if the next token is an identifier.
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if (calls.empty())
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expect(Token::Newline);
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else
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accept(Token::Newline, true);
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call.signature = parseFunctionSignature();
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if (accept(Token::Comma, true))
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call.value = parseFunctionCallValue();
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if (accept(Token::Colon, true))
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call.arguments = parseFunctionCallArguments();
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if (accept(Token::Newline, true))
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call.displayMode = FunctionCall::DisplayMode::MultiLine;
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call.arguments.comment = parseComment();
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if (accept(Token::Newline, true))
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call.displayMode = FunctionCall::DisplayMode::MultiLine;
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expect(Token::Arrow);
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call.expectations = parseFunctionCallExpectations();
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accept(Token::Newline, true);
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call.expectations.comment = parseComment();
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if (call.signature == "constructor()")
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call.isConstructor = true;
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calls.emplace_back(std::move(call));
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}
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}
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}
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return calls;
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}
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bool TestFileParser::accept(soltest::Token _token, bool const _expect)
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{
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if (m_scanner.currentToken() != _token)
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return false;
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if (_expect)
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return expect(_token);
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return true;
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}
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bool TestFileParser::expect(soltest::Token _token, bool const _advance)
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{
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if (m_scanner.currentToken() != _token || m_scanner.currentToken() == Token::Invalid)
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throw Error(
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Error::Type::ParserError,
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"Unexpected " + formatToken(m_scanner.currentToken()) + ": \"" +
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m_scanner.currentLiteral() + "\". " +
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"Expected \"" + formatToken(_token) + "\"."
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);
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if (_advance)
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m_scanner.scanNextToken();
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return true;
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}
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string TestFileParser::parseFunctionSignature()
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{
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string signature = m_scanner.currentLiteral();
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expect(Token::Identifier);
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signature += formatToken(Token::LParen);
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expect(Token::LParen);
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string parameters;
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if (!accept(Token::RParen, false))
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parameters = parseIdentifierOrTuple();
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while (accept(Token::Comma))
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{
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parameters += formatToken(Token::Comma);
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expect(Token::Comma);
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parameters += parseIdentifierOrTuple();
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}
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if (accept(Token::Arrow, true))
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throw Error(Error::Type::ParserError, "Invalid signature detected: " + signature);
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signature += parameters;
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expect(Token::RParen);
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signature += formatToken(Token::RParen);
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return signature;
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}
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u256 TestFileParser::parseFunctionCallValue()
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{
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try
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{
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u256 value{parseDecimalNumber()};
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expect(Token::Ether);
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return value;
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}
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catch (std::exception const&)
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{
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throw Error(Error::Type::ParserError, "Ether value encoding invalid.");
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}
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}
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FunctionCallArgs TestFileParser::parseFunctionCallArguments()
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{
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FunctionCallArgs arguments;
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auto param = parseParameter();
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if (param.abiType.type == ABIType::None)
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throw Error(Error::Type::ParserError, "No argument provided.");
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arguments.parameters.emplace_back(param);
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while (accept(Token::Comma, true))
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arguments.parameters.emplace_back(parseParameter());
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return arguments;
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}
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FunctionCallExpectations TestFileParser::parseFunctionCallExpectations()
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{
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FunctionCallExpectations expectations;
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auto param = parseParameter();
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if (param.abiType.type == ABIType::None)
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{
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expectations.failure = false;
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return expectations;
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}
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expectations.result.emplace_back(param);
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while (accept(Token::Comma, true))
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expectations.result.emplace_back(parseParameter());
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/// We have always one virtual parameter in the parameter list.
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/// If its type is FAILURE, the expected result is also a REVERT etc.
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if (expectations.result.at(0).abiType.type != ABIType::Failure)
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expectations.failure = false;
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return expectations;
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}
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Parameter TestFileParser::parseParameter()
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{
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Parameter parameter;
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if (accept(Token::Newline, true))
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parameter.format.newline = true;
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auto literal = parseABITypeLiteral();
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parameter.rawBytes = get<0>(literal);
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parameter.abiType = get<1>(literal);
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parameter.rawString = get<2>(literal);
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return parameter;
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}
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tuple<bytes, ABIType, string> TestFileParser::parseABITypeLiteral()
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{
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ABIType abiType{ABIType::None, ABIType::AlignNone, 0};
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DeclaredAlignment alignment{DeclaredAlignment::None};
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bytes result{toBigEndian(u256{0})};
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string rawString;
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bool isSigned = false;
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if (accept(Token::Left, true))
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{
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rawString += formatToken(Token::Left);
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expect(Token::LParen);
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rawString += formatToken(Token::LParen);
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alignment = DeclaredAlignment::Left;
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}
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if (accept(Token::Right, true))
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{
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rawString += formatToken(Token::Right);
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expect(Token::LParen);
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rawString += formatToken(Token::LParen);
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alignment = DeclaredAlignment::Right;
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}
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try
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{
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if (accept(Token::Sub, true))
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{
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rawString += formatToken(Token::Sub);
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isSigned = true;
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}
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if (accept(Token::Boolean))
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{
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if (isSigned)
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throw Error(Error::Type::ParserError, "Invalid boolean literal.");
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abiType = ABIType{ABIType::Boolean, ABIType::AlignRight, 32};
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string parsed = parseBoolean();
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rawString += parsed;
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result = applyAlign(alignment, abiType, convertBoolean(parsed));
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}
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else if (accept(Token::HexNumber))
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{
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if (isSigned)
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throw Error(Error::Type::ParserError, "Invalid hex number literal.");
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abiType = ABIType{ABIType::Hex, ABIType::AlignRight, 32};
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string parsed = parseHexNumber();
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rawString += parsed;
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result = applyAlign(alignment, abiType, convertHexNumber(parsed));
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}
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else if (accept(Token::Hex, true))
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{
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if (isSigned)
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throw Error(Error::Type::ParserError, "Invalid hex string literal.");
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if (alignment != DeclaredAlignment::None)
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throw Error(Error::Type::ParserError, "Hex string literals cannot be aligned or padded.");
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string parsed = parseString();
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rawString += "hex\"" + parsed + "\"";
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result = convertHexNumber(parsed);
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abiType = ABIType{ABIType::HexString, ABIType::AlignNone, result.size()};
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}
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else if (accept(Token::String))
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{
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if (isSigned)
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throw Error(Error::Type::ParserError, "Invalid string literal.");
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if (alignment != DeclaredAlignment::None)
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throw Error(Error::Type::ParserError, "String literals cannot be aligned or padded.");
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abiType = ABIType{ABIType::String, ABIType::AlignLeft, 32};
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string parsed = parseString();
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rawString += "\"" + parsed + "\"";
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result = applyAlign(DeclaredAlignment::Left, abiType, convertString(parsed));
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}
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else if (accept(Token::Number))
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{
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auto type = isSigned ? ABIType::SignedDec : ABIType::UnsignedDec;
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abiType = ABIType{type, ABIType::AlignRight, 32};
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string parsed = parseDecimalNumber();
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rawString += parsed;
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if (isSigned)
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parsed = "-" + parsed;
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result = applyAlign(alignment, abiType, convertNumber(parsed));
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}
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else if (accept(Token::Failure, true))
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{
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if (isSigned)
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throw Error(Error::Type::ParserError, "Invalid failure literal.");
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abiType = ABIType{ABIType::Failure, ABIType::AlignRight, 0};
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result = bytes{};
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}
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if (alignment != DeclaredAlignment::None)
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{
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expect(Token::RParen);
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rawString += formatToken(Token::RParen);
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}
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return make_tuple(result, abiType, rawString);
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}
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catch (std::exception const&)
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{
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throw Error(Error::Type::ParserError, "Literal encoding invalid.");
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}
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}
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string TestFileParser::parseIdentifierOrTuple()
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{
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string identOrTuple;
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auto parseArrayDimensions = [&]()
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{
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while (accept(Token::LBrack))
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{
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identOrTuple += formatToken(Token::LBrack);
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expect(Token::LBrack);
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if (accept(Token::Number))
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identOrTuple += parseDecimalNumber();
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identOrTuple += formatToken(Token::RBrack);
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expect(Token::RBrack);
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}
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};
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if (accept(Token::Identifier))
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{
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identOrTuple = m_scanner.currentLiteral();
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expect(Token::Identifier);
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parseArrayDimensions();
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return identOrTuple;
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}
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expect(Token::LParen);
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identOrTuple += formatToken(Token::LParen);
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identOrTuple += parseIdentifierOrTuple();
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while (accept(Token::Comma))
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{
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identOrTuple += formatToken(Token::Comma);
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expect(Token::Comma);
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identOrTuple += parseIdentifierOrTuple();
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}
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expect(Token::RParen);
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identOrTuple += formatToken(Token::RParen);
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parseArrayDimensions();
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return identOrTuple;
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}
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string TestFileParser::parseBoolean()
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{
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string literal = m_scanner.currentLiteral();
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expect(Token::Boolean);
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return literal;
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}
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string TestFileParser::parseComment()
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{
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string comment = m_scanner.currentLiteral();
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if (accept(Token::Comment, true))
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return comment;
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return string{};
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}
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string TestFileParser::parseDecimalNumber()
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{
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string literal = m_scanner.currentLiteral();
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expect(Token::Number);
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return literal;
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}
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string TestFileParser::parseHexNumber()
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{
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string literal = m_scanner.currentLiteral();
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expect(Token::HexNumber);
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return literal;
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}
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string TestFileParser::parseString()
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{
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string literal = m_scanner.currentLiteral();
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expect(Token::String);
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return literal;
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}
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bytes TestFileParser::convertBoolean(string const& _literal)
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{
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if (_literal == "true")
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return bytes{true};
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else if (_literal == "false")
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return bytes{false};
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else
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throw Error(Error::Type::ParserError, "Boolean literal invalid.");
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}
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bytes TestFileParser::convertNumber(string const& _literal)
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{
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try
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{
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return toCompactBigEndian(u256{_literal});
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}
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catch (std::exception const&)
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{
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throw Error(Error::Type::ParserError, "Number encoding invalid.");
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}
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}
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bytes TestFileParser::convertHexNumber(string const& _literal)
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{
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try
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{
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if (_literal.size() % 2)
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throw Error(Error::Type::ParserError, "Hex number encoding invalid.");
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else
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return fromHex(_literal);
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}
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catch (std::exception const&)
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{
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throw Error(Error::Type::ParserError, "Hex number encoding invalid.");
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}
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}
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bytes TestFileParser::convertString(string const& _literal)
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{
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try
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{
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return asBytes(_literal);
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}
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catch (std::exception const&)
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{
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throw Error(Error::Type::ParserError, "String encoding invalid.");
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}
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}
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void TestFileParser::Scanner::readStream(istream& _stream)
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{
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std::string line;
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while (std::getline(_stream, line))
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m_line += line;
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m_char = m_line.begin();
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}
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void TestFileParser::Scanner::scanNextToken()
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{
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using namespace langutil;
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// Make code coverage happy.
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assert(formatToken(Token::NUM_TOKENS) == "");
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auto detectKeyword = [](std::string const& _literal = "") -> TokenDesc {
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if (_literal == "true") return TokenDesc{Token::Boolean, _literal};
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if (_literal == "false") return TokenDesc{Token::Boolean, _literal};
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if (_literal == "ether") return TokenDesc{Token::Ether, _literal};
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if (_literal == "left") return TokenDesc{Token::Left, _literal};
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if (_literal == "right") return TokenDesc{Token::Right, _literal};
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if (_literal == "hex") return TokenDesc{Token::Hex, _literal};
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if (_literal == "FAILURE") return TokenDesc{Token::Failure, _literal};
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return TokenDesc{Token::Identifier, _literal};
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};
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auto selectToken = [this](Token _token, std::string const& _literal = "") -> TokenDesc {
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advance();
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return make_pair(_token, !_literal.empty() ? _literal : formatToken(_token));
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};
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TokenDesc token = make_pair(Token::Unknown, "");
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do
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{
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switch(current())
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{
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case '/':
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advance();
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if (current() == '/')
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token = selectToken(Token::Newline);
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else
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token = selectToken(Token::Invalid);
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break;
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case '-':
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if (peek() == '>')
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{
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advance();
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token = selectToken(Token::Arrow);
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}
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else
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token = selectToken(Token::Sub);
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break;
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case ':':
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token = selectToken(Token::Colon);
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break;
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case '#':
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token = selectToken(Token::Comment, scanComment());
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break;
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case ',':
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token = selectToken(Token::Comma);
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break;
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case '(':
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token = selectToken(Token::LParen);
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break;
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case ')':
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token = selectToken(Token::RParen);
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break;
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case '[':
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token = selectToken(Token::LBrack);
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break;
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case ']':
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token = selectToken(Token::RBrack);
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break;
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case '\"':
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token = selectToken(Token::String, scanString());
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break;
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default:
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if (isIdentifierStart(current()))
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{
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TokenDesc detectedToken = detectKeyword(scanIdentifierOrKeyword());
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token = selectToken(detectedToken.first, detectedToken.second);
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}
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else if (isDecimalDigit(current()))
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{
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if (current() == '0' && peek() == 'x')
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{
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advance();
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advance();
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token = selectToken(Token::HexNumber, "0x" + scanHexNumber());
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}
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else
|
|
token = selectToken(Token::Number, scanDecimalNumber());
|
|
}
|
|
else if (isWhiteSpace(current()))
|
|
token = selectToken(Token::Whitespace);
|
|
else if (isEndOfLine())
|
|
token = make_pair(Token::EOS, "EOS");
|
|
else
|
|
throw Error(
|
|
Error::Type::ParserError,
|
|
"Unexpected character: '" + string{current()} + "'"
|
|
);
|
|
break;
|
|
}
|
|
}
|
|
while (token.first == Token::Whitespace);
|
|
m_currentToken = token;
|
|
}
|
|
|
|
string TestFileParser::Scanner::scanComment()
|
|
{
|
|
string comment;
|
|
advance();
|
|
|
|
while (current() != '#')
|
|
{
|
|
comment += current();
|
|
advance();
|
|
}
|
|
return comment;
|
|
}
|
|
|
|
string TestFileParser::Scanner::scanIdentifierOrKeyword()
|
|
{
|
|
string identifier;
|
|
identifier += current();
|
|
while (langutil::isIdentifierPart(peek()))
|
|
{
|
|
advance();
|
|
identifier += current();
|
|
}
|
|
return identifier;
|
|
}
|
|
|
|
string TestFileParser::Scanner::scanDecimalNumber()
|
|
{
|
|
string number;
|
|
number += current();
|
|
while (langutil::isDecimalDigit(peek()))
|
|
{
|
|
advance();
|
|
number += current();
|
|
}
|
|
return number;
|
|
}
|
|
|
|
string TestFileParser::Scanner::scanHexNumber()
|
|
{
|
|
string number;
|
|
number += current();
|
|
while (langutil::isHexDigit(peek()))
|
|
{
|
|
advance();
|
|
number += current();
|
|
}
|
|
return number;
|
|
}
|
|
|
|
string TestFileParser::Scanner::scanString()
|
|
{
|
|
string str;
|
|
advance();
|
|
|
|
while (current() != '\"')
|
|
{
|
|
str += current();
|
|
advance();
|
|
}
|
|
return str;
|
|
}
|