//---------------------------------------------------------------------------------------
// ParseReturnStatement
//
// ReturnStatement :
// 'return' Expression
//
// This function may return a null AST under error condition. The caller should handle
// that case.
// Regardless of error conditions, on exit the parser points to the first token after
// the return statement.
//---------------------------------------------------------------------------------------
private ReturnNode ParseReturnStatement()
{
var returnNode = new ReturnNode(m_currentToken.Clone(), this);
GetNextToken();
if (!m_foundEndOfLine)
{
if (JSToken.Semicolon != m_currentToken.Token && JSToken.RightCurly != m_currentToken.Token)
{
m_noSkipTokenSet.Add(NoSkipTokenSet.s_EndOfStatementNoSkipTokenSet);
try
{
returnNode.Operand = ParseExpression();
}
catch (RecoveryTokenException exc)
{
returnNode.Operand = exc._partiallyComputedNode;
if (IndexOfToken(NoSkipTokenSet.s_EndOfStatementNoSkipTokenSet, exc) == -1)
{
exc._partiallyComputedNode = returnNode;
throw;
}
}
finally
{
if (returnNode.Operand != null)
{
returnNode.UpdateWith(returnNode.Operand.Context);
}
m_noSkipTokenSet.Remove(NoSkipTokenSet.s_EndOfStatementNoSkipTokenSet);
}
}
if (JSToken.Semicolon == m_currentToken.Token)
{
returnNode.TerminatingContext = m_currentToken.Clone();
GetNextToken();
}
else if (m_foundEndOfLine || m_currentToken.Token == JSToken.RightCurly || m_currentToken.Token == JSToken.EndOfFile)
{
// semicolon insertion rules
// a right-curly or an end of line is something we don't WANT to throw a warning for.
// Just too common and doesn't really warrant a warning (in my opinion)
if (JSToken.RightCurly != m_currentToken.Token && JSToken.EndOfFile != m_currentToken.Token)
{
ReportError(JSError.SemicolonInsertion, returnNode.Context.IfNotNull(c => c.FlattenToEnd()), true);
}
}
else
{
ReportError(JSError.NoSemicolon, false);
}
}
return returnNode;
}
