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// ArrayElementGroup.cs
//
// Authors: Lluis Sanchez Gual <lluis@novell.com>
// Jeffrey Stedfast <jeff@xamarin.com>
//
// Copyright (c) 2008 Novell, Inc (http://www.novell.com)
// Copyright (c) 2012 Xamarin Inc. (http://www.xamarin.com)
//
// 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.Text;
using Mono.Debugging.Client;
using Mono.Debugging.Backend;
namespace Mono.Debugging.Evaluation
{
public class ArrayElementGroup: RemoteFrameObject, IObjectValueSource
{
EvaluationContext ctx;
int[] baseIndices;
int firstIndex;
int lastIndex;
int[] bounds;
ICollectionAdaptor array;
const int MaxChildCount = 150;
public ArrayElementGroup (EvaluationContext ctx, ICollectionAdaptor array)
: this (ctx, array, new int [0])
{
}
public ArrayElementGroup (EvaluationContext ctx, ICollectionAdaptor array, int[] baseIndices)
: this (ctx, array, baseIndices, 0, -1)
{
}
public ArrayElementGroup (EvaluationContext ctx, ICollectionAdaptor array, int[] baseIndices, int firstIndex, int lastIndex)
{
this.array = array;
this.ctx = ctx;
this.bounds = array.GetDimensions ();
this.baseIndices = baseIndices;
this.firstIndex = firstIndex;
this.lastIndex = lastIndex;
}
public bool IsRange {
get { return lastIndex != -1; }
}
public ObjectValue CreateObjectValue ()
{
Connect ();
StringBuilder sb = new StringBuilder ("[");
for (int n=0; n<baseIndices.Length; n++) {
if (n > 0)
sb.Append (", ");
sb.Append (baseIndices [n].ToString ());
}
if (IsRange) {
if (baseIndices.Length > 0)
sb.Append (", ");
sb.Append (firstIndex.ToString ()).Append ("..").Append (lastIndex.ToString ());
}
if (bounds.Length > 1 && baseIndices.Length < bounds.Length)
sb.Append (", ...");
sb.Append ("]");
ObjectValue res = ObjectValue.CreateObject (this, new ObjectPath (sb.ToString ()), "", "", ObjectValueFlags.ArrayElement|ObjectValueFlags.ReadOnly|ObjectValueFlags.NoRefresh, null);
res.ChildSelector = "";
return res;
}
public ObjectValue[] GetChildren (EvaluationOptions options)
{
return GetChildren (new ObjectPath ("this"), -1, -1, options);
}
public ObjectValue[] GetChildren (ObjectPath path, int firstItemIndex, int count, EvaluationOptions options)
{
EvaluationContext cctx = ctx.WithOptions (options);
if (path.Length > 1) {
// Looking for children of an array element
int[] idx = StringToIndices (path [1]);
object obj = array.GetElement (idx);
return cctx.Adapter.GetObjectValueChildren (cctx, new ArrayObjectSource (array, path[1]), obj, firstItemIndex, count);
}
int lowerBound;
int upperBound;
bool isLastDimension;
if (bounds.Length > 1) {
int rank = baseIndices.Length;
lowerBound = 0;
upperBound = bounds [rank] - 1;
isLastDimension = rank == bounds.Length - 1;
} else {
lowerBound = 0;
upperBound = bounds [0] - 1;
isLastDimension = true;
}
int len;
int initalIndex;
if (!IsRange) {
initalIndex = lowerBound;
len = upperBound + 1;
}
else {
initalIndex = firstIndex;
len = lastIndex - firstIndex + 1;
}
if (firstItemIndex == -1) {
firstItemIndex = 0;
count = len;
}
// Make sure the group doesn't have too many elements. If so, divide
int div = 1;
while (len / div > MaxChildCount)
div *= 10;
if (div == 1 && isLastDimension) {
// Return array elements
ObjectValue[] values = new ObjectValue [count];
ObjectPath newPath = new ObjectPath ("this");
int[] curIndex = new int [baseIndices.Length + 1];
Array.Copy (baseIndices, curIndex, baseIndices.Length);
string curIndexStr = IndicesToString (baseIndices);
if (baseIndices.Length > 0) curIndexStr += ",";
for (int n=0; n < values.Length; n++) {
int index = n + initalIndex + firstItemIndex;
string sidx = curIndexStr + index.ToString ();
ObjectValue val;
string ename = "[" + sidx.Replace (",",", ") + "]";
if (index > upperBound)
val = ObjectValue.CreateUnknown (sidx);
else {
curIndex [curIndex.Length - 1] = index;
object elem = array.GetElement (curIndex);
val = cctx.Adapter.CreateObjectValue (cctx, this, newPath.Append (sidx), elem, ObjectValueFlags.ArrayElement);
if (elem != null && !cctx.Adapter.IsNull (cctx, elem)) {
TypeDisplayData tdata = cctx.Adapter.GetTypeDisplayData (cctx, cctx.Adapter.GetValueType (cctx, elem));
if (!string.IsNullOrEmpty (tdata.NameDisplayString))
ename = cctx.Adapter.EvaluateDisplayString (cctx, elem, tdata.NameDisplayString);
}
}
val.Name = ename;
values [n] = val;
}
return values;
}
else if (!isLastDimension && div == 1) {
// Return an array element group for each index
List<ObjectValue> list = new List<ObjectValue> ();
for (int i=0; i<count; i++) {
int index = i + initalIndex + firstItemIndex;
ObjectValue val;
// This array must be created at every call to avoid sharing
// changes with all array groups
int[] curIndex = new int [baseIndices.Length + 1];
Array.Copy (baseIndices, curIndex, baseIndices.Length);
curIndex [curIndex.Length - 1] = index;
if (index > upperBound)
val = ObjectValue.CreateUnknown ("");
else {
ArrayElementGroup grp = new ArrayElementGroup (cctx, array, curIndex);
val = grp.CreateObjectValue ();
}
list.Add (val);
}
return list.ToArray ();
}
else {
// Too many elements. Split the array.
// Don't make divisions of 10 elements, min is 100
if (div == 10)
div = 100;
// Create the child groups
int i = initalIndex + firstItemIndex;
len += i;
List<ObjectValue> list = new List<ObjectValue> ();
while (i < len) {
int end = i + div - 1;
if (end > len)
end = len - 1;
ArrayElementGroup grp = new ArrayElementGroup (cctx, array, baseIndices, i, end);
list.Add (grp.CreateObjectValue ());
i += div;
}
return list.ToArray ();
}
}
internal static string IndicesToString (int[] indices)
{
StringBuilder sb = new StringBuilder ();
for (int n=0; n<indices.Length; n++) {
if (n > 0)
sb.Append (',');
sb.Append (indices [n].ToString ());
}
return sb.ToString ();
}
internal static int[] StringToIndices (string str)
{
string[] sidx = str.Split (',');
int[] idx = new int [sidx.Length];
for (int n=0; n<sidx.Length; n++)
idx [n] = int.Parse (sidx [n]);
return idx;
}
public static string GetArrayDescription (int[] bounds)
{
if (bounds.Length == 0)
return "[...]";
StringBuilder sb = new StringBuilder ("[");
for (int n=0; n<bounds.Length; n++) {
if (n > 0)
sb.Append (", ");
sb.Append (bounds [n].ToString ());
}
sb.Append ("]");
return sb.ToString ();
}
public EvaluationResult SetValue (ObjectPath path, string value, EvaluationOptions options)
{
if (path.Length != 2)
throw new NotSupportedException ();
int[] idx = StringToIndices (path [1]);
object val;
try {
EvaluationContext cctx = ctx.Clone ();
EvaluationOptions ops = options ?? cctx.Options;
ops.AllowMethodEvaluation = true;
ops.AllowTargetInvoke = true;
cctx.Options = ops;
ValueReference var = ctx.Evaluator.Evaluate (ctx, value, array.ElementType);
val = var.Value;
val = ctx.Adapter.Convert (ctx, val, array.ElementType);
array.SetElement (idx, val);
} catch {
val = array.GetElement (idx);
}
try {
return ctx.Evaluator.TargetObjectToExpression (ctx, val);
} catch (Exception ex) {
ctx.WriteDebuggerError (ex);
return new EvaluationResult ("? (" + ex.Message + ")");
}
}
public ObjectValue GetValue (ObjectPath path, EvaluationOptions options)
{
if (path.Length != 2)
throw new NotSupportedException ();
int[] idx = StringToIndices (path [1]);
object elem = array.GetElement (idx);
EvaluationContext cctx = ctx.WithOptions (options);
ObjectValue val = cctx.Adapter.CreateObjectValue (cctx, this, path, elem, ObjectValueFlags.ArrayElement);
if (elem != null && !cctx.Adapter.IsNull (cctx, elem)) {
TypeDisplayData tdata = cctx.Adapter.GetTypeDisplayData (cctx, cctx.Adapter.GetValueType (cctx, elem));
if (!string.IsNullOrEmpty (tdata.NameDisplayString))
val.Name = cctx.Adapter.EvaluateDisplayString (cctx, elem, tdata.NameDisplayString);
}
return val;
}
public object GetRawValue (ObjectPath path, EvaluationOptions options)
{
if (path.Length != 2)
throw new NotSupportedException ();
int[] idx = StringToIndices (path [1]);
object elem = array.GetElement (idx);
EvaluationContext cctx = ctx.WithOptions (options);
return cctx.Adapter.ToRawValue (cctx, new ArrayObjectSource (array, idx), elem);
}
public void SetRawValue (ObjectPath path, object value, EvaluationOptions options)
{
if (path.Length != 2)
throw new NotSupportedException ();
int[] idx = StringToIndices (path [1]);
EvaluationContext cctx = ctx.WithOptions (options);
object val = cctx.Adapter.FromRawValue (cctx, value);
array.SetElement (idx, val);
}
}
class ArrayObjectSource: IObjectSource
{
ICollectionAdaptor source;
string path;
public ArrayObjectSource (ICollectionAdaptor source, string path)
{
this.source = source;
this.path = path;
}
public ArrayObjectSource (ICollectionAdaptor source, int[] index)
{
this.source = source;
this.path = ArrayElementGroup.IndicesToString (index);
}
public object Value {
get {
return source.GetElement (ArrayElementGroup.StringToIndices (path));
}
set {
source.SetElement (ArrayElementGroup.StringToIndices (path), value);
}
}
}
}
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