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Merge pull request #6858 from ethereum/develop

Browse Source 
Merge develop into release for 0.5.9 (2)
This commit is contained in:
chriseth 2019-05-28 18:49:01 +02:00 committed by GitHub
commit c68bc34e94
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27 changed files with 137 additions and 489 deletions
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2
Changelog.md
View File

@ -8,7 +8,6 @@ Language Features:
Compiler Features:
* Assembler: Encode the compiler version in the deployed bytecode.
* Code Generator: Fix handling of structs of dynamic size as constructor parameters.
* Commandline Interface: Experimental parser error recovery via the ``--error-recovery`` commandline switch.
* Inline Assembly: Disallow the combination of ``msize()`` and the Yul optimizer.
* Metadata: Add IPFS hashes of source files.
* Optimizer: Add rule to simplify SHL/SHR combinations.
@ -22,6 +21,7 @@ Compiler Features:
* Yul Optimizer: Do not inline recursive functions.
* Yul Optimizer: Do not remove instructions that affect ``msize()`` if ``msize()`` is used.
Bugfixes:
* Code Generator: Explicitly turn uninitialized internal function pointers into invalid functions when loaded from storage.
* Code Generator: Fix assertion failure when assigning structs containing array of mapping.

9
liblangutil/CharStream.cpp
View File

@ -73,13 +73,6 @@ char CharStream::rollback(size_t _amount)
return get();
}
char CharStream::setPosition(size_t _location)
{
solAssert(_location <= m_source.size(), "Attempting to set position past end of source.");
m_position = _location;
return get();
}
string CharStream::lineAtPosition(int _position) const
{
// if _position points to \n, it returns the line before the \n
@ -113,3 +106,5 @@ tuple<int, int> CharStream::translatePositionToLineColumn(int _position) const
}
return tuple<int, int>(lineNumber, searchPosition - lineStart);
}

6
liblangutil/CharStream.h
View File

@ -76,13 +76,7 @@ public:
char get(size_t _charsForward = 0) const { return m_source[m_position + _charsForward]; }
char advanceAndGet(size_t _chars = 1);
/// Sets scanner position to @ _amount characters backwards in source text.
/// @returns The character of the current location after update is returned.
char rollback(size_t _amount);
/// Sets scanner position to @ _location if it refers a valid offset in m_source.
/// If not, nothing is done.
/// @returns The character of the current location after update is returned.
char setPosition(size_t _location);
void reset() { m_position = 0; }

5
liblangutil/ErrorReporter.cpp
View File

@ -86,11 +86,6 @@ void ErrorReporter::error(Error::Type _type, SourceLocation const& _location, Se
m_errorList.push_back(err);
}
bool ErrorReporter::hasExcessiveErrors() const
{
return m_errorCount > c_maxErrorsAllowed;
}
bool ErrorReporter::checkForExcessiveErrors(Error::Type _type)
{
if (_type == Error::Type::Warning)

4
liblangutil/ErrorReporter.h
View File

@ -118,9 +118,6 @@ public:
return m_errorCount > 0;
}
// @returns true if the maximum error count has been reached.
bool hasExcessiveErrors() const;
private:
void error(
Error::Type _type,
@ -152,3 +149,4 @@ private:
};
}

98
liblangutil/ParserBase.cpp
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@ -47,7 +47,7 @@ Token ParserBase::peekNextToken() const
return m_scanner->peekNextToken();
}
string ParserBase::currentLiteral() const
std::string ParserBase::currentLiteral() const
{
return m_scanner->currentLiteral();
}
@ -57,79 +57,30 @@ Token ParserBase::advance()
return m_scanner->next();
}
string ParserBase::tokenName(Token _token)
{
if (_token == Token::Identifier)
return "identifier";
else if (_token == Token::EOS)
return "end of source";
else if (TokenTraits::isReservedKeyword(_token))
return "reserved keyword '" + TokenTraits::friendlyName(_token) + "'";
else if (TokenTraits::isElementaryTypeName(_token)) //for the sake of accuracy in reporting
{
ElementaryTypeNameToken elemTypeName = m_scanner->currentElementaryTypeNameToken();
return "'" + elemTypeName.toString() + "'";
}
else
return "'" + TokenTraits::friendlyName(_token) + "'";
}
void ParserBase::expectToken(Token _value, bool _advance)
{
Token tok = m_scanner->currentToken();
if (tok != _value)
{
string const expectedToken = ParserBase::tokenName(_value);
if (m_parserErrorRecovery)
parserError("Expected " + expectedToken + " but got " + tokenName(tok));
else
fatalParserError("Expected " + expectedToken + " but got " + tokenName(tok));
// Do not advance so that recovery can sync or make use of the current token.
// This is especially useful if the expected token
// is the only one that is missing and is at the end of a construct.
// "{ ... ; }" is such an example.
// ^
_advance = false;
}
if (_advance)
m_scanner->next();
}
void ParserBase::expectTokenOrConsumeUntil(Token _value, string const& _currentNodeName, bool _advance)
auto tokenName = [this](Token _token)
{
Token tok = m_scanner->currentToken();
if (tok != _value)
if (_token == Token::Identifier)
return string("identifier");
else if (_token == Token::EOS)
return string("end of source");
else if (TokenTraits::isReservedKeyword(_token))
return string("reserved keyword '") + TokenTraits::friendlyName(_token) + "'";
else if (TokenTraits::isElementaryTypeName(_token)) //for the sake of accuracy in reporting
{
int startPosition = position();
SourceLocation errorLoc = SourceLocation{startPosition, endPosition(), source()};
while (m_scanner->currentToken() != _value && m_scanner->currentToken() != Token::EOS)
m_scanner->next();
string const expectedToken = ParserBase::tokenName(_value);
string const msg = "In " + _currentNodeName + ", " + expectedToken + "is expected; got " + ParserBase::tokenName(tok) + "instead.";
if (m_scanner->currentToken() == Token::EOS)
{
// rollback to where the token started, and raise exception to be caught at a higher level.
m_scanner->setPosition(startPosition);
m_inParserRecovery = true;
fatalParserError(errorLoc, msg);
ElementaryTypeNameToken elemTypeName = m_scanner->currentElementaryTypeNameToken();
return string("'") + elemTypeName.toString() + "'";
}
else
{
if (m_inParserRecovery)
parserWarning("Recovered in " + _currentNodeName + " at " + expectedToken + ".");
else
parserError(errorLoc, msg + "Recovered at next " + expectedToken);
m_inParserRecovery = false;
}
}
else if (m_inParserRecovery)
{
string expectedToken = ParserBase::tokenName(_value);
parserWarning("Recovered in " + _currentNodeName + " at " + expectedToken + ".");
m_inParserRecovery = false;
}
return string("'") + TokenTraits::friendlyName(_token) + "'";
};
fatalParserError(string("Expected ") + tokenName(_value) + string(" but got ") + tokenName(tok));
}
if (_advance)
m_scanner->next();
}
@ -147,27 +98,12 @@ void ParserBase::decreaseRecursionDepth()
m_recursionDepth--;
}
void ParserBase::parserWarning(string const& _description)
{
m_errorReporter.warning(SourceLocation{position(), endPosition(), source()}, _description);
}
void ParserBase::parserError(SourceLocation const& _location, string const& _description)
{
m_errorReporter.parserError(_location, _description);
}
void ParserBase::parserError(string const& _description)
{
parserError(SourceLocation{position(), endPosition(), source()}, _description);
m_errorReporter.parserError(SourceLocation{position(), endPosition(), source()}, _description);
}
void ParserBase::fatalParserError(string const& _description)
{
fatalParserError(SourceLocation{position(), endPosition(), source()}, _description);
}
void ParserBase::fatalParserError(SourceLocation const& _location, string const& _description)
{
m_errorReporter.fatalParserError(_location, _description);
m_errorReporter.fatalParserError(SourceLocation{position(), endPosition(), source()}, _description);
}

28
liblangutil/ParserBase.h
View File

@ -36,14 +36,7 @@ class Scanner;
class ParserBase
{
public:
/// Set @a _parserErrorRecovery to true for additional error
/// recovery. This is experimental and intended for use
/// by front-end tools that need partial AST information even
/// when errors occur.
explicit ParserBase(ErrorReporter& errorReporter, bool _parserErrorRecovery = false): m_errorReporter(errorReporter)
{
m_parserErrorRecovery = _parserErrorRecovery;
}
explicit ParserBase(ErrorReporter& errorReporter): m_errorReporter(errorReporter) {}
std::shared_ptr<CharStream> source() const { return m_scanner->charStream(); }
@ -69,17 +62,10 @@ protected:
///@{
///@name Helper functions
/// If current token value is not @a _value, throw exception otherwise advance token
// @a if _advance is true and error recovery is in effect.
/// If current token value is not _value, throw exception otherwise advance token.
void expectToken(Token _value, bool _advance = true);
/// Like expectToken but if there is an error ignores tokens until
/// the expected token or EOS is seen. If EOS is encountered, back up to the error point,
/// and throw an exception so that a higher grammar rule has an opportunity to recover.
void expectTokenOrConsumeUntil(Token _value, std::string const& _currentNodeName, bool _advance = true);
Token currentToken() const;
Token peekNextToken() const;
std::string tokenName(Token _token);
std::string currentLiteral() const;
Token advance();
///@}
@ -91,26 +77,16 @@ protected:
/// Creates a @ref ParserError and annotates it with the current position and the
/// given @a _description.
void parserError(std::string const& _description);
void parserError(SourceLocation const& _location, std::string const& _description);
/// Creates a @ref ParserWarning and annotates it with the current position and the
/// given @a _description.
void parserWarning(std::string const& _description);
/// Creates a @ref ParserError and annotates it with the current position and the
/// given @a _description. Throws the FatalError.
void fatalParserError(std::string const& _description);
void fatalParserError(SourceLocation const& _location, std::string const& _description);
std::shared_ptr<Scanner> m_scanner;
/// The reference to the list of errors and warning to add errors/warnings during parsing
ErrorReporter& m_errorReporter;
/// Current recursion depth during parsing.
size_t m_recursionDepth = 0;
/// True if we are in parser error recovery. Usually this means we are scanning for
/// a synchronization token like ';', or '}'. We use this to reduce cascaded error messages.
bool m_inParserRecovery = false;
bool m_parserErrorRecovery = false;
};
}

7
liblangutil/Scanner.cpp
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@ -156,13 +156,6 @@ void Scanner::reset()
next();
}
void Scanner::setPosition(size_t _offset)
{
m_char = m_source->setPosition(_offset);
scanToken();
next();
}
void Scanner::supportPeriodInIdentifier(bool _value)
{
m_supportPeriodInIdentifier = _value;

3
liblangutil/Scanner.h
View File

@ -110,9 +110,6 @@ public:
/// @returns the next token and advances input
Token next();
/// Set scanner to a specific offset. This is used in error recovery.
void setPosition(size_t _offset);
///@{
///@name Information about the current token

2
libsolidity/interface/CompilerStack.cpp
View File

@ -217,7 +217,7 @@ bool CompilerStack::parse()
string const& path = sourcesToParse[i];
Source& source = m_sources[path];
source.scanner->reset();
source.ast = Parser(m_errorReporter, m_evmVersion, m_parserErrorRecovery).parse(source.scanner);
source.ast = Parser(m_errorReporter, m_evmVersion).parse(source.scanner);
if (!source.ast)
solAssert(!Error::containsOnlyWarnings(m_errorReporter.errors()), "Parser returned null but did not report error.");
else

9
libsolidity/interface/CompilerStack.h
View File

@ -132,14 +132,6 @@ public:
/// Must be set before parsing.
void setOptimiserSettings(OptimiserSettings _settings);
/// Set whether or not parser error is desired.
/// When called without an argument it will revert to the default.
/// Must be set before parsing.
void setParserErrorRecovery(bool _wantErrorRecovery = false)
{
m_parserErrorRecovery = _wantErrorRecovery;
}
/// Set the EVM version used before running compile.
/// When called without an argument it will revert to the default version.
/// Must be set before parsing.
@ -394,7 +386,6 @@ private:
langutil::ErrorList m_errorList;
langutil::ErrorReporter m_errorReporter;
bool m_metadataLiteralSources = false;
bool m_parserErrorRecovery = false;
State m_stackState = Empty;
bool m_release = VersionIsRelease;
};

60
libsolidity/parsing/Parser.cpp
View File

@ -258,17 +258,12 @@ ASTPointer<ContractDefinition> Parser::parseContractDefinition()
{
RecursionGuard recursionGuard(*this);
ASTNodeFactory nodeFactory(*this);
ASTPointer<ASTString> name = nullptr;
ASTPointer<ASTString> docString;
vector<ASTPointer<InheritanceSpecifier>> baseContracts;
vector<ASTPointer<ASTNode>> subNodes;
ContractDefinition::ContractKind contractKind = ContractDefinition::ContractKind::Contract;
try
{
if (m_scanner->currentCommentLiteral() != "")
docString = make_shared<ASTString>(m_scanner->currentCommentLiteral());
contractKind = parseContractKind();
name = expectIdentifierToken();
ContractDefinition::ContractKind contractKind = parseContractKind();
ASTPointer<ASTString> name = expectIdentifierToken();
vector<ASTPointer<InheritanceSpecifier>> baseContracts;
if (m_scanner->currentToken() == Token::Is)
do
{
@ -276,6 +271,7 @@ ASTPointer<ContractDefinition> Parser::parseContractDefinition()
baseContracts.push_back(parseInheritanceSpecifier());
}
while (m_scanner->currentToken() == Token::Comma);
vector<ASTPointer<ASTNode>> subNodes;
expectToken(Token::LBrace);
while (true)
{
@ -311,21 +307,7 @@ ASTPointer<ContractDefinition> Parser::parseContractDefinition()
else
fatalParserError(string("Function, variable, struct or modifier declaration expected."));
}
}
catch (FatalError const&)
{
if (
!m_errorReporter.hasErrors() ||
!m_parserErrorRecovery ||
m_errorReporter.hasExcessiveErrors()
)
BOOST_THROW_EXCEPTION(FatalError()); /* Don't try to recover here. */
m_inParserRecovery = true;
}
nodeFactory.markEndPosition();
if (m_inParserRecovery)
expectTokenOrConsumeUntil(Token::RBrace, "ContractDefinition");
else
expectToken(Token::RBrace);
return nodeFactory.createNode<ContractDefinition>(
name,
@ -977,25 +959,9 @@ ASTPointer<Block> Parser::parseBlock(ASTPointer<ASTString> const& _docString)
ASTNodeFactory nodeFactory(*this);
expectToken(Token::LBrace);
vector<ASTPointer<Statement>> statements;
try
{
while (m_scanner->currentToken() != Token::RBrace)
statements.push_back(parseStatement());
nodeFactory.markEndPosition();
}
catch (FatalError const&)
{
if (
!m_errorReporter.hasErrors() ||
!m_parserErrorRecovery ||
m_errorReporter.hasExcessiveErrors()
)
BOOST_THROW_EXCEPTION(FatalError()); /* Don't try to recover here. */
m_inParserRecovery = true;
}
if (m_parserErrorRecovery)
expectTokenOrConsumeUntil(Token::RBrace, "Block");
else
expectToken(Token::RBrace);
return nodeFactory.createNode<Block>(_docString, statements);
}
@ -1004,11 +970,9 @@ ASTPointer<Statement> Parser::parseStatement()
{
RecursionGuard recursionGuard(*this);
ASTPointer<ASTString> docString;
ASTPointer<Statement> statement;
try
{
if (m_scanner->currentCommentLiteral() != "")
docString = make_shared<ASTString>(m_scanner->currentCommentLiteral());
ASTPointer<Statement> statement;
switch (m_scanner->currentToken())
{
case Token::If:
@ -1066,20 +1030,6 @@ ASTPointer<Statement> Parser::parseStatement()
statement = parseSimpleStatement(docString);
break;
}
}
catch (FatalError const&)
{
if (
!m_errorReporter.hasErrors() ||
!m_parserErrorRecovery ||
m_errorReporter.hasExcessiveErrors()
)
BOOST_THROW_EXCEPTION(FatalError()); /* Don't try to recover here. */
m_inParserRecovery = true;
}
if (m_inParserRecovery)
expectTokenOrConsumeUntil(Token::Semicolon, "Statement");
else
expectToken(Token::Semicolon);
return statement;
}

5
libsolidity/parsing/Parser.h
View File

@ -41,10 +41,9 @@ class Parser: public langutil::ParserBase
public:
explicit Parser(
langutil::ErrorReporter& _errorReporter,
langutil::EVMVersion _evmVersion,
bool _errorRecovery = false
langutil::EVMVersion _evmVersion
):
ParserBase(_errorReporter, _errorRecovery),
ParserBase(_errorReporter),
m_evmVersion(_evmVersion)
{}

5
solc/CommandLineInterface.cpp
View File

@ -112,7 +112,6 @@ static string const g_strBinaryRuntime = "bin-runtime";
static string const g_strCombinedJson = "combined-json";
static string const g_strCompactJSON = "compact-format";
static string const g_strContracts = "contracts";
static string const g_strErrorRecovery = "error-recovery";
static string const g_strEVM = "evm";
static string const g_strEVM15 = "evm15";
static string const g_strEVMVersion = "evm-version";
@ -164,7 +163,6 @@ static string const g_argBinary = g_strBinary;
static string const g_argBinaryRuntime = g_strBinaryRuntime;
static string const g_argCombinedJson = g_strCombinedJson;
static string const g_argCompactJSON = g_strCompactJSON;
static string const g_argErrorRecovery = g_strErrorRecovery;
static string const g_argGas = g_strGas;
static string const g_argHelp = g_strHelp;
static string const g_argInputFile = g_strInputFile;
@ -691,7 +689,6 @@ Allowed options)",
(g_argColor.c_str(), "Force colored output.")
(g_argNoColor.c_str(), "Explicitly disable colored output, disabling terminal auto-detection.")
(g_argNewReporter.c_str(), "Enables new diagnostics reporter.")
(g_argErrorRecovery.c_str(), "Enables additional parser error recovery.")
(g_argIgnoreMissingFiles.c_str(), "Ignore missing files.");
po::options_description outputComponents("Output Components");
outputComponents.add_options()
@ -926,8 +923,6 @@ bool CommandLineInterface::processInput()
m_compiler->setSources(m_sourceCodes);
if (m_args.count(g_argLibraries))
m_compiler->setLibraries(m_libraries);
if (m_args.count(g_argErrorRecovery))
m_compiler->setParserErrorRecovery(true);
m_compiler->setEVMVersion(m_evmVersion);
// TODO: Perhaps we should not compile unless requested

2
test/InteractiveTests.h
View File

@ -56,7 +56,6 @@ Testsuite const g_interactiveTestsuites[] = {
{"Yul Interpreter", "libyul", "yulInterpreterTests", false, false, &yul::test::YulInterpreterTest::create},
{"Yul Object Compiler", "libyul", "objectCompiler", false, false, &yul::test::ObjectCompilerTest::create},
{"Syntax", "libsolidity", "syntaxTests", false, false, &SyntaxTest::create},
{"ErrorRecovery", "libsolidity", "errorRecoveryTests", false, false, &SyntaxTest::createErrorRecovery},
{"Semantic", "libsolidity", "semanticTests", false, true, &SemanticTest::create},
{"JSON AST", "libsolidity", "ASTJSON", false, false, &ASTJSONTest::create},
{"SMT Checker", "libsolidity", "smtCheckerTests", true, false, &SyntaxTest::create},
@ -67,3 +66,4 @@ Testsuite const g_interactiveTestsuites[] = {
}
}
}

53
test/liblangutil/CharStream.cpp
View File

@ -1,53 +0,0 @@
/*
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/>.
*/
/**
* @author Rocky Bernstein <rocky.bernstein@consensys.net>
* @date 2019
* Unit tests for the CharStream class.
*/
#include <liblangutil/CharStream.h>
#include <liblangutil/Exceptions.h>
#include <test/Options.h>
namespace langutil
{
namespace test
{
BOOST_AUTO_TEST_SUITE(CharStreamtest)
BOOST_AUTO_TEST_CASE(test_fail)
{
auto const source = std::make_shared<CharStream>("now is the time for testing", "source");
BOOST_CHECK('n' == source->get());
BOOST_CHECK('n' == source->get());
BOOST_CHECK('o' == source->advanceAndGet());
BOOST_CHECK('n' == source->rollback(1));
BOOST_CHECK('w' == source->setPosition(2));
BOOST_REQUIRE_THROW(
source->setPosition(200),
::langutil::InternalCompilerError
);
}
BOOST_AUTO_TEST_SUITE_END()
}
} // end namespaces

5
test/libsolidity/AnalysisFramework.cpp
View File

@ -44,15 +44,12 @@ AnalysisFramework::parseAnalyseAndReturnError(
string const& _source,
bool _reportWarnings,
bool _insertVersionPragma,
bool _allowMultipleErrors,
bool _allowRecoveryErrors
bool _allowMultipleErrors
)
{
compiler().reset();
compiler().setSources({{"", _insertVersionPragma ? "pragma solidity >=0.0;\n" + _source : _source}});
compiler().setEVMVersion(dev::test::Options::get().evmVersion());
compiler().setParserErrorRecovery(_allowRecoveryErrors);
_allowMultipleErrors = _allowMultipleErrors || _allowRecoveryErrors;
if (!compiler().parse())
{
BOOST_FAIL("Parsing contract failed in analysis test suite:" + formatErrors());

3
test/libsolidity/AnalysisFramework.h
View File

@ -50,8 +50,7 @@ protected:
std::string const& _source,
bool _reportWarnings = false,
bool _insertVersionPragma = true,
bool _allowMultipleErrors = false,
bool _allowRecoveryErrors = false
bool _allowMultipleErrors = false
);
virtual ~AnalysisFramework() = default;

6
test/libsolidity/SMTChecker.cpp
View File

@ -42,16 +42,14 @@ protected:
std::string const& _source,
bool _reportWarnings = false,
bool _insertVersionPragma = true,
bool _allowMultipleErrors = false,
bool _allowRecoveryErrors = false
bool _allowMultipleErrors = false
)
{
return AnalysisFramework::parseAnalyseAndReturnError(
"pragma experimental SMTChecker;\n" + _source,
_reportWarnings,
_insertVersionPragma,
_allowMultipleErrors,
_allowRecoveryErrors
_allowMultipleErrors
);
}
};

4
test/libsolidity/SyntaxTest.cpp
View File

@ -52,7 +52,7 @@ int parseUnsignedInteger(string::iterator& _it, string::iterator _end)
}
SyntaxTest::SyntaxTest(string const& _filename, langutil::EVMVersion _evmVersion, bool _errorRecovery): m_evmVersion(_evmVersion)
SyntaxTest::SyntaxTest(string const& _filename, langutil::EVMVersion _evmVersion): m_evmVersion(_evmVersion)
{
ifstream file(_filename);
if (!file)
@ -67,7 +67,6 @@ SyntaxTest::SyntaxTest(string const& _filename, langutil::EVMVersion _evmVersion
m_settings.erase("optimize-yul");
}
m_expectations = parseExpectations(file);
m_errorRecovery = _errorRecovery;
}
TestCase::TestResult SyntaxTest::run(ostream& _stream, string const& _linePrefix, bool _formatted)
@ -76,7 +75,6 @@ TestCase::TestResult SyntaxTest::run(ostream& _stream, string const& _linePrefix
compiler().reset();
compiler().setSources({{"", versionPragma + m_source}});
compiler().setEVMVersion(m_evmVersion);
compiler().setParserErrorRecovery(m_errorRecovery);
compiler().setOptimiserSettings(
m_optimiseYul ?
OptimiserSettings::full() :

11
test/libsolidity/SyntaxTest.h
View File

@ -54,14 +54,8 @@ class SyntaxTest: AnalysisFramework, public EVMVersionRestrictedTestCase
{
public:
static std::unique_ptr<TestCase> create(Config const& _config)
{
return std::make_unique<SyntaxTest>(_config.filename, _config.evmVersion, false);
}
static std::unique_ptr<TestCase> createErrorRecovery(Config const& _config)
{
return std::make_unique<SyntaxTest>(_config.filename, _config.evmVersion, true);
}
SyntaxTest(std::string const& _filename, langutil::EVMVersion _evmVersion, bool _errorRecovery = false);
{ return std::make_unique<SyntaxTest>(_config.filename, _config.evmVersion); }
SyntaxTest(std::string const& _filename, langutil::EVMVersion _evmVersion);
TestResult run(std::ostream& _stream, std::string const& _linePrefix = "", bool _formatted = false) override;
@ -90,7 +84,6 @@ protected:
std::vector<SyntaxTestError> m_errorList;
bool m_optimiseYul = false;
langutil::EVMVersion const m_evmVersion;
bool m_errorRecovery = false;
};
}

20
test/libsolidity/errorRecoveryTests/constructor_recovers.sol
View File

@ -1,20 +0,0 @@
pragma solidity >=0.0.0;
contract Error1 {
constructor() public {
balances[tx.origin] = ; // missing RHS.
}
// Without error recovery we stop due to the above error.
// Error recovery however recovers at the above ';'
// There should be an AST for the above, albeit with error
// nodes.
// This function parses properly and should give AST info.
function five() public view returns(uint) {
return 5;
}
}
// ----
// ParserError: (95-96): Expected primary expression.
// Warning: (95-96): Recovered in Statement at ';'.

7
test/libsolidity/errorRecoveryTests/contract_recovery.sol
View File

@ -1,7 +0,0 @@
contract Errort6 {
using foo for ; // missing type name
}
// ----
// ParserError: (36-37): Expected type name
// Warning: (59-60): Recovered in ContractDefinition at '}'.

13
test/libsolidity/errorRecoveryTests/do_not_delete_at_error.sol
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pragma solidity >=0.0.0;
// Example to show why deleting the token at the
// is bad when error recovery is in effect. Here, ")" is missing
// and there is a ";" instead. That causes us to
// not be able to synchronize to ';'. Advance again and
// '}' is deleted and then we can't synchronize the contract.
// There should be an an AST created this contract (with errors).
contract Error2 {
mapping (address => uint balances; // missing ) before "balances"
}
// ----
// ParserError: (417-425): Expected ')' but got identifier

23
test/libsolidity/errorRecoveryTests/error_to_eos.sol
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// Example which where scanning hits EOS, so we reset.
// Here we recover in the contractDefinition.
// There should be an an AST created this contract (with errors).
contract Error2 {
mapping (address => uint balances) // missing ;
}
// There is no error in this contract
contract SendCoin {
function sendCoin(address receiver, uint amount) public returns(bool sufficient) {
if (balances[msg.sender] < amount) return false;
balances[msg.sender] -= amount;
balances[receiver] += amount;
emit Transfer(msg.sender, receiver, amount);
return true;
}
}
// ----
// ParserError: (212-220): Expected ')' but got identifier
// ParserError: (220-221): Expected ';' but got ')'
// ParserError: (220-221): Function, variable, struct or modifier declaration expected.
// Warning: (235-236): Recovered in ContractDefinition at '}'.

11
test/libsolidity/errorRecoveryTests/missing_rhs.sol
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pragma solidity >=0.0.0;
contract Error3 {
constructor() public {
balances[tx.origin] = ; // missing RHS.
}
}
// ----
// ParserError: (95-96): Expected primary expression.
// Warning: (95-96): Recovered in Statement at ';'.

29
test/libsolidity/errorRecoveryTests/multiple_errors.sol
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// An example with multiple errors.
// Most are caught by inserting an expected token.
// However some us S C Johnson recovery to
// skip over tokens.
pragma solidity >=0.0.0;
contract Error4 {
constructor() public {
balances[tx.origin] = 1 2; // missing operator
}
function sendCoin(address receiver, uint amount) public returns(bool sufficient) {
if (balances[msg.sender] < amount) return false;
balances[msg.sender] -= amount // Missing ";"
balances[receiver] += amount // Another missing ";"
emit Transfer(msg.sender // truncated line
return true;
}
}
// ----
// ParserError: (249-250): Expected ';' but got 'Number'
// ParserError: (471-479): Expected ';' but got identifier
// ParserError: (529-533): Expected ';' but got 'emit'
// ParserError: (577-583): Expected ',' but got 'return'
// ParserError: (577-583): Expected primary expression.
// Warning: (588-589): Recovered in Statement at ';'.