diff options
Diffstat (limited to 'libsolidity/inlineasm/AsmParser.cpp')
| -rw-r--r-- | libsolidity/inlineasm/AsmParser.cpp | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/libsolidity/inlineasm/AsmParser.cpp b/libsolidity/inlineasm/AsmParser.cpp index ef3da255..fcc92dbb 100644 --- a/libsolidity/inlineasm/AsmParser.cpp +++ b/libsolidity/inlineasm/AsmParser.cpp @@ -71,6 +71,8 @@ assembly::Statement Parser::parseStatement() expectToken(Token::Colon); assignment.variableName.location = location(); assignment.variableName.name = m_scanner->currentLiteral(); + if (instructions().count(assignment.variableName.name)) + fatalParserError("Identifier expected, got instruction name."); assignment.location.end = endPosition(); expectToken(Token::Identifier); return assignment; @@ -101,6 +103,8 @@ assembly::Statement Parser::parseStatement() { // functional assignment FunctionalAssignment funAss = createWithLocation<FunctionalAssignment>(identifier.location); + if (instructions().count(identifier.name)) + fatalParserError("Cannot use instruction names for identifier names."); m_scanner->next(); funAss.variableName = identifier; funAss.value.reset(new Statement(parseExpression())); @@ -130,7 +134,7 @@ assembly::Statement Parser::parseExpression() return operation; } -assembly::Statement Parser::parseElementaryOperation(bool _onlySinglePusher) +std::map<string, dev::solidity::Instruction> const& Parser::instructions() { // Allowed instructions, lowercase names. static map<string, dev::solidity::Instruction> s_instructions; @@ -151,7 +155,11 @@ assembly::Statement Parser::parseElementaryOperation(bool _onlySinglePusher) // add alias for selfdestruct s_instructions["selfdestruct"] = solidity::Instruction::SUICIDE; } + return s_instructions; +} +assembly::Statement Parser::parseElementaryOperation(bool _onlySinglePusher) +{ Statement ret; switch (m_scanner->currentToken()) { @@ -170,9 +178,9 @@ assembly::Statement Parser::parseElementaryOperation(bool _onlySinglePusher) else literal = m_scanner->currentLiteral(); // first search the set of instructions. - if (s_instructions.count(literal)) + if (instructions().count(literal)) { - dev::solidity::Instruction const& instr = s_instructions[literal]; + dev::solidity::Instruction const& instr = instructions().at(literal); if (_onlySinglePusher) { InstructionInfo info = dev::solidity::instructionInfo(instr); @@ -207,6 +215,8 @@ assembly::VariableDeclaration Parser::parseVariableDeclaration() VariableDeclaration varDecl = createWithLocation<VariableDeclaration>(); expectToken(Token::Let); varDecl.name = m_scanner->currentLiteral(); + if (instructions().count(varDecl.name)) + fatalParserError("Cannot use instruction names for identifier names."); expectToken(Token::Identifier); expectToken(Token::Colon); expectToken(Token::Assign); |