private Exp ParseAssign()
{
Exp leftExp = ParseNameValueExp();
if (tape.HasCurrent && tape.Current.IsKind(TokenKindSymbol.Assign, TokenKindSymbol.AssignTo))
{
ExpAssign assignExp = new ExpAssign(expContext);
assignExp.IsAssignTo = (tape.Current.IsKind(TokenKindSymbol.AssignTo));
tape.MoveNext();
Exp rightExp = ParseBinaryLogicExp();
if (!assignExp.IsAssignTo)
{
assignExp.ToExp = leftExp;
assignExp.ValueExp = rightExp;
}
else
{
assignExp.ToExp = rightExp;
assignExp.ValueExp = leftExp;
}
return(assignExp);
}
else
{
return(leftExp);
}
}
private Exp ParseAssign()
{
Exp leftExp = parseBinaryLogicExp();
if (tape.Current.Kind == TokenKind.Assign || tape.Current.Kind == TokenKind.AssignTo)
{
ExpAssign assignExp = new ExpAssign();
assignExp.IsAssignTo = (tape.Current.Kind == TokenKind.AssignTo);
tape.MoveNext();
Exp rightExp = parseBinaryLogicExp();
if (!assignExp.IsAssignTo)
{
assignExp.ToExp = leftExp;
assignExp.ValueExp = rightExp;
}
else
{
assignExp.ToExp = rightExp;
assignExp.ValueExp = leftExp;
}
return(assignExp);
}
else
{
return(leftExp);
}
}
