public SubstituteSyntaxElement(LexicalElement lexAtStart, AccessorSyntaxElement accessor, OperatorType @operator, ExpressionSyntaxElement rightValue)
: base(lexAtStart)
{
this.Accessor = accessor;
this.Operator = @operator;
this.RightValue = rightValue;
}
protected override ExpressionSyntaxElement ReturnSubstitute(ExpressionSyntaxElement leftValue, Optional <FixedList <LexicalElement, ExpressionSyntaxElement> > optOf_PlusEqual_AndSubstitute)
{
if (optOf_PlusEqual_AndSubstitute.HasValue)
{
SubstituteSyntaxElement.OperatorType op = SubstituteSyntaxElement.OperatorType.Substitute;
switch (optOf_PlusEqual_AndSubstitute.Value.Element1.Type)
{
case LexType.Equal:
op = SubstituteSyntaxElement.OperatorType.Substitute;
break;
case LexType.PlusEqual:
op = SubstituteSyntaxElement.OperatorType.Add;
break;
case LexType.MinusEqual:
op = SubstituteSyntaxElement.OperatorType.Subtract;
break;
case LexType.CrossEqual:
op = SubstituteSyntaxElement.OperatorType.Multiply;
break;
case LexType.SlashEqual:
op = SubstituteSyntaxElement.OperatorType.Divide;
break;
case LexType.PercentEqual:
op = SubstituteSyntaxElement.OperatorType.Remainder;
break;
}
AccessorSyntaxElement accessor = leftValue as AccessorSyntaxElement;
if (accessor == null)
{
throw new ParseException("Only identifier or indexer can be left value", leftValue.LexAtStart);
}
leftValue = new SubstituteSyntaxElement(leftValue.LexAtStart, accessor, op, optOf_PlusEqual_AndSubstitute.Value.Element2);
}
return(leftValue);
}
protected override ExpressionSyntaxElement ReturnInc(ExpressionSyntaxElement modProperty, LexicalElement plusPlus)
{
IncrementSyntaxElement.OperatorType op = IncrementSyntaxElement.OperatorType.PostDec;
switch (plusPlus.Type)
{
case LexType.PlusPlus:
op = IncrementSyntaxElement.OperatorType.PostInc;
break;
case LexType.MinusMinus:
op = IncrementSyntaxElement.OperatorType.PostDec;
break;
default:
throw new NotSupportedException();
}
AccessorSyntaxElement accessor = modProperty as AccessorSyntaxElement;
if (accessor == null)
{
throw new ParseException("Only identifier or indexer can be left value", modProperty.LexAtStart);
}
return(new IncrementSyntaxElement(plusPlus, accessor, op));
}
public IncrementSyntaxElement(LexicalElement lexAtStart, AccessorSyntaxElement accessor, OperatorType @operator)
: base(lexAtStart)
{
this.Operator = @operator;
this.Accessor = accessor;
}