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| author | Lu Guanqun <guanqun.lu@gmail.com> | 2015-12-23 00:47:55 +0800 |
|---|---|---|
| committer | Lu Guanqun <guanqun.lu@gmail.com> | 2016-01-23 01:14:00 +0800 |
| commit | 7eefa838a3384d3a8a81d73d7e544afa7f3193fc (patch) | |
| tree | b43a24fd88c7864357bb3efb7b9b3534654887d0 /libsolidity | |
| parent | 4563d4bd3c3525fd2bf26823567f3c99018482e1 (diff) | |
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[cond-expr] parse _ ? _ : _ into conditional AST node
Diffstat (limited to 'libsolidity')
| -rw-r--r-- | libsolidity/parsing/Parser.cpp | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/libsolidity/parsing/Parser.cpp b/libsolidity/parsing/Parser.cpp index 4ac3381c..cc06eb87 100644 --- a/libsolidity/parsing/Parser.cpp +++ b/libsolidity/parsing/Parser.cpp @@ -932,13 +932,26 @@ ASTPointer<Expression> Parser::parseExpression( ) { ASTPointer<Expression> expression = parseBinaryExpression(4, _lookAheadIndexAccessStructure); - if (!Token::isAssignmentOp(m_scanner->currentToken())) + if (Token::isAssignmentOp(m_scanner->currentToken())) + { + Token::Value assignmentOperator = expectAssignmentOperator(); + ASTPointer<Expression> rightHandSide = parseExpression(); + ASTNodeFactory nodeFactory(*this, expression); + nodeFactory.setEndPositionFromNode(rightHandSide); + return nodeFactory.createNode<Assignment>(expression, assignmentOperator, rightHandSide); + } + else if (m_scanner->currentToken() == Token::Value::Conditional) + { + m_scanner->next(); + ASTPointer<Expression> trueExpression = parseExpression(); + expectToken(Token::Colon); + ASTPointer<Expression> falseExpression = parseExpression(); + ASTNodeFactory nodeFactory(*this, expression); + nodeFactory.setEndPositionFromNode(falseExpression); // TODO: + return nodeFactory.createNode<Conditional>(expression, trueExpression, falseExpression); + } + else return expression; - Token::Value assignmentOperator = expectAssignmentOperator(); - ASTPointer<Expression> rightHandSide = parseExpression(); - ASTNodeFactory nodeFactory(*this, expression); - nodeFactory.setEndPositionFromNode(rightHandSide); - return nodeFactory.createNode<Assignment>(expression, assignmentOperator, rightHandSide); } ASTPointer<Expression> Parser::parseBinaryExpression( |