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//
// IMLReader.cs
//
// Author:
// Jean-Philippe Bruyère <jp.bruyere@hotmail.com>
//
// Copyright (c) 2016 jp
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
using System;
using System.Xml;
using System.IO;
using System.Reflection;
using System.Reflection.Emit;
using System.Linq;
using System.Collections.Generic;
namespace Crow.IML2
{
public class Reader : XmlTextReader
{
static List<Type> CrowTypes = new List<Type> ();
public enum SubNodeType{
None,
Child,
Children,
Template,
Content,
Items,
ItemTemplate
}
//public static Node Parse(string str){
// string[] tmp = str.Trim ().Split ('.');
// switch (tmp.Length) {
// case 1:
// return new Node ((SubNodeType)int.Parse (tmp [0]));
// case 2:
// return new Node ((SubNodeType)int.Parse (tmp [0]), int.Parse (tmp[1]));
// case 0:
// default:
// return new Node ();
// }
//}
//public static string AddressToString(Node[] address){
// string tmp = "";
// foreach (Node n in address) {
// tmp += n.ToString () + ";";
// }
// return string.IsNullOrEmpty(tmp) ? tmp : tmp.Substring (0, tmp.Length - 1);
//}
//public static Node[] AddressFromString(string address) {
// List<Node> nodes = new List<Node> ();
// string[] tmp = address.Split (';');
// for (int i = 0; i < tmp.Length; i++)
// nodes.Add (Node.Parse (tmp [i]));
// return nodes.ToArray();
//}
// public class PropertyBinding {
// public string OriginePropertyName = "";
// public MemberAddress Destination;
// }
public Type RootType = null;
public Context context;
InstanciatorInvoker loader = null;
DynamicMethod dm = null;
ILGenerator il { get { return context.il; }}
/// <summary>
/// Finalize instatiator MSIL and return LoaderInvoker delegate
/// </summary>
public InstanciatorInvoker GetLoader(){
if (loader != null)
return loader;
il.Emit(OpCodes.Ret);
loader = (InstanciatorInvoker)dm.CreateDelegate (typeof(InstanciatorInvoker));
return loader;
}
protected int curDepth {
get { return context.nodesStack.Count - 1;}
}
protected Node curNode {
get { return context.nodesStack.Peek(); }
}
//protected Stack<int> curTemplateDepth = new Stack<int>(new int[] {0}); //current template root depth
#region CTOR
public Reader (string path)
: this(Interface.GetStreamFromPath (path)){
}
public Reader (Stream stream)
: base(stream)
{
createInstantiator ();
}
/// <summary>
/// Used to parse xmlFrament with same code generator linked
/// If ilGen=null, a new Code Generator will be created.
/// </summary>
public Reader (Context ctx, string xmlFragment)
: base(xmlFragment, XmlNodeType.Element,null){
context = ctx;
//
// if (IMLCtx != null)
// return;
//
// createInstantiator();
}
#endregion
void createBindingDelegates(){
// foreach (Dictionary<string, MemberAddress> pb in IMLCtx.PropertyBindings) {
//
// }
}
void registerPropertyBinding(string origNode, string origProp, MemberAddress ma){
if (!context.PropertyBindings.ContainsKey(origNode))
context.PropertyBindings [origNode] = new Dictionary<string, MemberAddress> ();
context.PropertyBindings [origNode] [origProp] = ma;
}
void readPropertyBinding(string srcProperty, string expression){
//if binding exp = '{}' => binding is done on datasource
if (string.IsNullOrEmpty (expression)) {
registerPropertyBinding ("DS", "", new MemberAddress (context.nodesStack.ToArray (), srcProperty));
return;
}
// if (expression.StartsWith ("²")) {
// expression = expression.Substring (1);
// TwoWayBinding = true;
// }
//
string [] bindingExp = expression.Split ('/');
if (bindingExp.Length == 1) {
registerPropertyBinding ("DS", bindingExp [0],
new MemberAddress (context.nodesStack.ToArray (), srcProperty));
return;
}
string targetName = "";
string nodeId = "";
Node[] target = context.nodesStack.ToArray ();
int nodeIdx = target.Length - 1;//index of target in nodeStack
int ptr = 0;//pointer in bindingExp splitted on '/'
// //if exp start with '/' => WidgetName.property
if (string.IsNullOrEmpty (bindingExp [0])) {
string[] bindTrg = bindingExp [1].Split ('.');
if (bindTrg.Length == 1) {
nodeId = Node.AddressToString (target);
targetName = bindTrg [0];
}else if (bindTrg.Length == 2) {
nodeId = context.Names [bindTrg [0]];
targetName = bindTrg [1];
} else
throw new Exception ("Syntax error in binding, expected 'go dot member'");
} else {
if (bindingExp [0] == ".") { //template binding
//parse nodes up until template node
while (nodeIdx > 0) {
if (target [nodeIdx].Type == SubNodeType.Template)
break;
nodeIdx--;
}
ptr++;
} else {
while (ptr < bindingExp.Length - 1) {
if (bindingExp [ptr] == "..")
nodeIdx--;
else
break;
ptr++;
}
}
Node[] origine = new Node[nodeIdx + 1];
try {
Array.Copy (target, origine, nodeIdx + 1);
int destLength = target.Length - nodeIdx;
Node[] dest = new Node[destLength];
Array.Copy (target, nodeIdx, dest, 0, destLength);
} catch (Exception ex) {
System.Diagnostics.Debug.WriteLine (ex.ToString ());
}
nodeId = Node.AddressToString (origine);
targetName = bindingExp [ptr];
}
registerPropertyBinding (nodeId, targetName, new MemberAddress (context.nodesStack.ToArray (), srcProperty));
}
}
}
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