protected override List <AphidExpression> MutateCore(AphidExpression expression, out bool hasChanged)
{
hasChanged = false;
var parent = expression as IParentNode;
if (IsStatement &&
expression.Type == AphidExpressionType.BinaryOperatorExpression &&
expression.ToBinaryOperator().LeftOperand.Type == AphidExpressionType.IdentifierExpression &&
expression.ToBinaryOperator().RightOperand.Type == AphidExpressionType.FunctionExpression)
{
_rootFunctions.Add(expression.ToBinaryOperator().RightOperand.ToFunction());
return(null);
}
else if (expression.Type == AphidExpressionType.FunctionExpression &&
!_rootFunctions.Contains(expression.ToFunction()))
{
var parents = AphidTreeHelper.FirstOrDefaultPath(_ast, x => x == expression);
if (parents.Length >= 3 &&
parents.Skip(1).First().Type == AphidExpressionType.BinaryOperatorExpression &&
parents.Skip(2).First().Type == AphidExpressionType.ObjectExpression)
{
return(null);
}
var eligible = GetEligibleMethodContainer(parents, out var after);
if (eligible != null)
{
var id = QueueInsertion(expression.ToFunction(), eligible, after);
hasChanged = true;
return(new List <AphidExpression> {
id
});
}
else
{
throw new NotImplementedException();
}
}
else
{
return(null);
}
}
public static IdentifierExpression GetDeclaredIdentifier(AphidExpression expression)
{
switch (expression.Type)
{
case AphidExpressionType.ForEachExpression:
var element = expression.ToForEach().Element;
if (element.Type == AphidExpressionType.IdentifierExpression)
{
return(element.ToIdentifier());
}
break;
case AphidExpressionType.BinaryOperatorExpression:
var binOpExp = expression.ToBinaryOperator();
if (binOpExp.Operator == AphidTokenType.AssignmentOperator &&
binOpExp.LeftOperand.Type == AphidExpressionType.IdentifierExpression)
{
return(binOpExp.LeftOperand.ToIdentifier());
}
break;
}
return(null);
}
protected override void Visit(AphidExpression expression)
{
switch (expression.Type)
{
case AphidExpressionType.ForEachExpression:
var element = expression.ToForEach().Element;
if (element.Type == AphidExpressionType.IdentifierExpression)
{
_locals.Add(element.ToIdentifier());
}
break;
case AphidExpressionType.BinaryOperatorExpression:
var binOpExp = expression.ToBinaryOperator();
if (binOpExp.Operator == AphidTokenType.AssignmentOperator &&
binOpExp.LeftOperand.Type == AphidExpressionType.IdentifierExpression)
{
_locals.Add(binOpExp.LeftOperand.ToIdentifier());
}
break;
case AphidExpressionType.FunctionExpression:
IgnoreChildren();
break;
}
}
protected override void BeginVisitNode(AphidExpression expression)
{
if (IsMember(expression))
{
_object = Ancestors.Peek().ToObject();
_member = expression.ToBinaryOperator();
_currentPath.Push(_member.LeftOperand);
}
else if (IsArray(expression))
{
_array = expression.ToArray();
}
}
protected override List<AphidExpression> MutateCore(AphidExpression expression, out bool hasChanged)
{
BinaryOperatorExpression binOpExp;
if (expression.Type != AphidNodeType.BinaryOperatorExpression ||
(binOpExp = expression.ToBinaryOperator()).Operator != AphidTokenType.PlusEqualOperator)
{
hasChanged = false;
return null;
}
hasChanged = true;
return new List<AphidExpression>
{
new CallExpression(
new BinaryOperatorExpression(
binOpExp.LeftOperand,
AphidTokenType.MemberOperator,
new IdentifierExpression("Add")),
binOpExp.RightOperand)
};
}
protected override List <AphidExpression> MutateCore(AphidExpression expression, out bool hasChanged)
{
BinaryOperatorExpression binOpExp;
if (expression.Type != AphidExpressionType.BinaryOperatorExpression ||
(binOpExp = expression.ToBinaryOperator()).Operator != AphidTokenType.PlusEqualOperator)
{
hasChanged = false;
return(null);
}
hasChanged = true;
return(new List <AphidExpression>
{
new CallExpression(
new BinaryOperatorExpression(
binOpExp.LeftOperand,
AphidTokenType.MemberOperator,
new IdentifierExpression("Add")),
binOpExp.RightOperand)
});
}