diff options
Diffstat (limited to 'libsolidity/inlineasm/AsmParser.cpp')
| -rw-r--r-- | libsolidity/inlineasm/AsmParser.cpp | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/libsolidity/inlineasm/AsmParser.cpp b/libsolidity/inlineasm/AsmParser.cpp index 530cd726..ccc735f7 100644 --- a/libsolidity/inlineasm/AsmParser.cpp +++ b/libsolidity/inlineasm/AsmParser.cpp @@ -67,6 +67,26 @@ assembly::Statement Parser::parseStatement() return parseFunctionDefinition(); case Token::LBrace: return parseBlock(); + case Token::Switch: + { + assembly::Switch _switch = createWithLocation<assembly::Switch>(); + m_scanner->next(); + _switch.expression = make_shared<Statement>(parseExpression()); + if (_switch.expression->type() == typeid(assembly::Instruction)) + fatalParserError("Instructions are not supported as expressions for switch."); + while (m_scanner->currentToken() == Token::Case) + _switch.cases.emplace_back(parseCase()); + if (m_scanner->currentToken() == Token::Default) + _switch.cases.emplace_back(parseCase()); + if (m_scanner->currentToken() == Token::Default) + fatalParserError("Only one default case allowed."); + else if (m_scanner->currentToken() == Token::Case) + fatalParserError("Case not allowed after default case."); + if (_switch.cases.size() == 0) + fatalParserError("Switch statement without any cases."); + _switch.location.end = _switch.cases.back().body.location.end; + return _switch; + } case Token::Assign: { if (m_julia) @@ -134,6 +154,26 @@ assembly::Statement Parser::parseStatement() return statement; } +assembly::Case Parser::parseCase() +{ + assembly::Case _case = createWithLocation<assembly::Case>(); + if (m_scanner->currentToken() == Token::Default) + m_scanner->next(); + else if (m_scanner->currentToken() == Token::Case) + { + m_scanner->next(); + assembly::Statement statement = parseElementaryOperation(); + if (statement.type() != typeid(assembly::Literal)) + fatalParserError("Literal expected."); + _case.value = make_shared<Literal>(std::move(boost::get<assembly::Literal>(statement))); + } + else + fatalParserError("Case or default case expected."); + _case.body = parseBlock(); + _case.location.end = _case.body.location.end; + return _case; +} + assembly::Statement Parser::parseExpression() { Statement operation = parseElementaryOperation(true); |