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//
// NodeAddress.cs
//
// Author:
// Jean-Philippe Bruyère <jp.bruyere@hotmail.com>
//
// Copyright (c) 2013-2017 Jean-Philippe Bruyère
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Reflection.Emit;
namespace Crow.IML
{
/// <summary>
/// Node address is a list of nodes from root to leaf defining a unique node
/// </summary>
public class NodeAddress : List<Node>
{
#region CTOR
public NodeAddress (Node[] nodes) : base(nodes) {}
#endregion
public Type NodeType { get { return Count == 0 ? null : this[this.Count -1].CrowType; }}
/// <summary>
/// Gets the node adress from binding expression starting from this node
/// and return in expression remaining part
/// </summary>
public NodeAddress ResolveExpression (ref string expression){
int ptr = this.Count - 1;
string[] splitedExp = expression.Split ('/');
if (splitedExp.Length < 2)//dataSource binding
return null;
if (string.IsNullOrEmpty (splitedExp [0]) || splitedExp [0] == ".") {//search template root
ptr--;
while (ptr >= 0) {
if (typeof(TemplatedControl).IsAssignableFrom (this [ptr].CrowType))
break;
ptr--;
}
} else if (splitedExp [0] == "..") { //search starting at current node
int levelUp = splitedExp.Length - 1;
if (levelUp > ptr + 1)
throw new Exception ("Binding error: try to bind outside IML source");
ptr -= levelUp;
}
expression = splitedExp [splitedExp.Length - 1];
//TODO:change Template special address identified with Nodecount = 0 to something not using array count to 0,
//here linq is working without limits checking in compile option
//but defining a 0 capacity array with limits cheking enabled, cause 'out of memory' error
return new NodeAddress (this.Take(ptr+1).ToArray());//[ptr+1];
//Array.Copy (sourceAddr.ToArray (), targetNode, ptr + 1);
//return new NodeAddress (targetNode);
}
/// <summary>
/// get BindingDefinition from binding expression
/// </summary>
public BindingDefinition GetBindingDef(string sourceMember, string expression){
BindingDefinition bindingDef = new BindingDefinition(this, sourceMember);
if (string.IsNullOrEmpty (expression)) {
return bindingDef;
} else {
if (expression.StartsWith ("²")) {
bindingDef.TwoWay = true;
expression = expression.Substring (1);
}
string exp = expression;
bindingDef.TargetNA = this.ResolveExpression (ref exp);
string [] bindTrg = exp.Split ('.');
if (bindTrg.Length == 0)
throw new Exception ("invalid binding expression: " + expression);
if (bindTrg.Length == 1)
bindingDef.TargetMember = bindTrg [0];
else {
if (!string.IsNullOrEmpty(bindTrg[0]))//searchByName
bindingDef.TargetName = bindTrg[0];
bindingDef.TargetMember = exp.Substring (bindTrg[0].Length + 1);
}
}
return bindingDef;
}
#region Object overrides
public override bool Equals (object obj)
{
if (obj == null)
return false;
NodeAddress na = (NodeAddress)obj;
return this.SequenceEqual (na);
}
public override int GetHashCode ()
{
unchecked {
int hash = 19;
foreach (Node n in this)
hash = hash * 31 + (n == null ? 0 : n.GetHashCode ());
return hash;
}
}
public override string ToString ()
{
string tmp = "";
foreach (Node n in this)
tmp += string.Format ("{0};", n.Index);
return tmp;
}
#endregion
}
public class NamedNodeAddress : NodeAddress {
public string Name;
public NamedNodeAddress(string name, Node[] nodes) : base(nodes){
Name = name;
}
}
}
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