/// <summary>
/// The visit new.
/// </summary>
/// <param name="exp">
/// The exp.
/// </param>
/// <returns>
/// The <see cref="Expression" />.
/// </returns>
protected override Expression VisitNew(NewExpression exp)
{
// Typisierte Select
if (exp.Members == null)
{
return(exp);
}
// anonymes Type
QNode bindingNode = null;
for (int i = 0; i < exp.Members.Count; i++)
{
var bindingProperty = exp.Members[i].Name;
var builder = new MemberNodeBuilder();
builder.Visit(exp.Arguments[i]);
var node = new QNode()
{
Type = NodeType.Member, Value = bindingProperty + ":" + builder.GetPath()
};
if (bindingNode == null)
{
bindingNode = node;
}
else
{
bindingNode.Left = node;
}
}
this.Context.Push(bindingNode);
return(exp);
}
/// <summary>
/// The visit member access.
/// </summary>
/// <param name="memberAccess">
/// The memberAccess.
/// </param>
/// <returns>
/// The <see cref="Expression" />.
/// </returns>
protected virtual Expression VisitMemberAccess(MemberExpression memberAccess)
{
if (memberAccess.Expression.Type.IsGenericType &&
typeof(IConstantPlaceHolder).IsAssignableFrom(memberAccess.Expression.Type))
{
var func = Expression.Lambda(memberAccess.Expression).Compile();
var ph = (IConstantPlaceHolder)func.DynamicInvoke();
var value = ph.GetValue();
var node = new QNode()
{
Type = NodeType.Constant, Value = value
};
this.Context.Push(node);
return(memberAccess);
}
if (memberAccess.Expression.NodeType == ExpressionType.Constant)
{
var value = this.ResolveValue(memberAccess);
var node = new QNode()
{
Type = NodeType.Constant, Value = value
};
this.Context.Push(node);
}
else
{
var builder = new MemberNodeBuilder();
builder.Visit(memberAccess);
var node = new QNode()
{
Type = NodeType.Member, Value = builder.GetPath()
};
this.Context.Push(node);
}
return(memberAccess);
}
/// <summary>
/// The visit member init.
/// </summary>
/// <param name="exp">
/// The exp.
/// </param>
/// <returns>
/// The <see cref="Expression" />.
/// </returns>
protected override Expression VisitMemberInit(MemberInitExpression exp)
{
QNode bindingNode = null;
for (int i = 0; i < exp.Bindings.Count; i++)
{
var builder = new MemberNodeBuilder();
builder.Visit(((MemberAssignment)exp.Bindings[i]).Expression);
var node = new QNode()
{
Type = NodeType.Member, Value = exp.Bindings[i].Member.Name + ":" + builder.GetPath()
};
if (bindingNode == null)
{
bindingNode = node;
}
else
{
bindingNode.Left = node;
}
}
this.Context.Push(bindingNode);
return(exp);
}