diff options
Diffstat (limited to 'libsolidity/inlineasm/AsmParser.cpp')
| -rw-r--r-- | libsolidity/inlineasm/AsmParser.cpp | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/libsolidity/inlineasm/AsmParser.cpp b/libsolidity/inlineasm/AsmParser.cpp index d84fe999..3087ad86 100644 --- a/libsolidity/inlineasm/AsmParser.cpp +++ b/libsolidity/inlineasm/AsmParser.cpp @@ -122,6 +122,34 @@ assembly::Statement Parser::parseStatement() { case Token::LParen: return parseCall(std::move(statement)); + case Token::Comma: + { + // if a comma follows, a multiple assignment is assumed + + if (statement.type() != typeid(assembly::Identifier)) + fatalParserError("Label name / variable name must precede \",\" (multiple assignment)."); + assembly::Identifier const& identifier = boost::get<assembly::Identifier>(statement); + + Assignment assignment = createWithLocation<Assignment>(identifier.location); + assignment.variableNames.emplace_back(identifier); + + do + { + expectToken(Token::Comma); + statement = parseElementaryOperation(false); + if (statement.type() != typeid(assembly::Identifier)) + fatalParserError("Variable name expected in multiple assignemnt."); + assignment.variableNames.emplace_back(boost::get<assembly::Identifier>(statement)); + } + while (currentToken() == Token::Comma); + + expectToken(Token::Colon); + expectToken(Token::Assign); + + assignment.value.reset(new Statement(parseExpression())); + assignment.location.end = locationOf(*assignment.value).end; + return assignment; + } case Token::Colon: { if (statement.type() != typeid(assembly::Identifier)) @@ -136,7 +164,7 @@ assembly::Statement Parser::parseStatement() if (!m_julia && instructions().count(identifier.name)) fatalParserError("Cannot use instruction names for identifier names."); advance(); - assignment.variableName = identifier; + assignment.variableNames.emplace_back(identifier); assignment.value.reset(new Statement(parseExpression())); assignment.location.end = locationOf(*assignment.value).end; return assignment; |