383 lines
11 KiB
C#
383 lines
11 KiB
C#
// ArrayElementGroup.cs
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//
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// Authors: Lluis Sanchez Gual <lluis@novell.com>
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// Jeffrey Stedfast <jeff@xamarin.com>
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//
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// Copyright (c) 2008 Novell, Inc (http://www.novell.com)
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// Copyright (c) 2012 Xamarin Inc. (http://www.xamarin.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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//
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using System;
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using System.Collections.Generic;
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using System.Text;
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using Mono.Debugging.Client;
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using Mono.Debugging.Backend;
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namespace Mono.Debugging.Evaluation
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{
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public class ArrayElementGroup: RemoteFrameObject, IObjectValueSource
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{
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readonly ICollectionAdaptor array;
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readonly EvaluationContext ctx;
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int[] baseIndices;
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int[] dimensions;
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int firstIndex;
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int lastIndex;
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const int MaxChildCount = 150;
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public ArrayElementGroup (EvaluationContext ctx, ICollectionAdaptor array)
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: this (ctx, array, new int [0])
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{
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}
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public ArrayElementGroup (EvaluationContext ctx, ICollectionAdaptor array, int[] baseIndices)
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: this (ctx, array, baseIndices, 0, -1)
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{
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}
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public ArrayElementGroup (EvaluationContext ctx, ICollectionAdaptor array, int[] baseIndices, int firstIndex, int lastIndex)
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{
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this.array = array;
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this.ctx = ctx;
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this.dimensions = array.GetDimensions ();
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this.baseIndices = baseIndices;
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this.firstIndex = firstIndex;
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this.lastIndex = lastIndex;
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}
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public bool IsRange {
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get { return lastIndex != -1; }
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}
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public ObjectValue CreateObjectValue ()
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{
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Connect ();
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var sb = new StringBuilder ("[");
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for (int i = 0; i < baseIndices.Length; i++) {
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if (i > 0)
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sb.Append (", ");
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sb.Append (baseIndices[i].ToString ());
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}
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if (IsRange) {
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if (baseIndices.Length > 0)
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sb.Append (", ");
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sb.Append (firstIndex.ToString ()).Append ("..").Append (lastIndex.ToString ());
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}
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if (dimensions.Length > 1 && baseIndices.Length < dimensions.Length)
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sb.Append (", ...");
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sb.Append ("]");
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ObjectValue res = ObjectValue.CreateObject (this, new ObjectPath (sb.ToString ()), "", "", ObjectValueFlags.ArrayElement|ObjectValueFlags.ReadOnly|ObjectValueFlags.NoRefresh, null);
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res.ChildSelector = "";
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return res;
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}
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public ObjectValue[] GetChildren (EvaluationOptions options)
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{
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return GetChildren (new ObjectPath ("this"), -1, -1, options);
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}
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public ObjectValue[] GetChildren (ObjectPath path, int firstItemIndex, int count, EvaluationOptions options)
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{
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EvaluationContext cctx = ctx.WithOptions (options);
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if (path.Length > 1) {
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// Looking for children of an array element
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int[] idx = StringToIndices (path [1]);
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object obj = array.GetElement (idx);
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return cctx.Adapter.GetObjectValueChildren (cctx, new ArrayObjectSource (array, path[1]), obj, firstItemIndex, count);
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}
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int lowerBound;
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int upperBound;
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bool isLastDimension;
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if (dimensions.Length > 1) {
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int rank = baseIndices.Length;
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lowerBound = array.GetLowerBounds () [rank];
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upperBound = lowerBound + dimensions [rank] - 1;
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isLastDimension = rank == dimensions.Length - 1;
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} else {
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lowerBound = array.GetLowerBounds () [0];
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upperBound = lowerBound + dimensions [0] - 1;
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isLastDimension = true;
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}
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int len;
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int initalIndex;
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if (!IsRange) {
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initalIndex = lowerBound;
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len = upperBound + 1 - lowerBound;
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} else {
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initalIndex = firstIndex;
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len = lastIndex - firstIndex + 1;
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}
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if (firstItemIndex == -1) {
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firstItemIndex = 0;
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count = len;
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}
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// Make sure the group doesn't have too many elements. If so, divide
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int div = 1;
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while (len / div > MaxChildCount)
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div *= 10;
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if (div == 1 && isLastDimension) {
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// Return array elements
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ObjectValue[] values = new ObjectValue [count];
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ObjectPath newPath = new ObjectPath ("this");
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int[] curIndex = new int [baseIndices.Length + 1];
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Array.Copy (baseIndices, curIndex, baseIndices.Length);
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string curIndexStr = IndicesToString (baseIndices);
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if (baseIndices.Length > 0)
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curIndexStr += ",";
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curIndex [curIndex.Length - 1] = initalIndex + firstItemIndex;
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var elems = array.GetElements (curIndex, System.Math.Min (values.Length, upperBound - lowerBound + 1));
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for (int n = 0; n < values.Length; n++) {
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int index = n + initalIndex + firstItemIndex;
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string sidx = curIndexStr + index;
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ObjectValue val;
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string ename = "[" + sidx.Replace (",", ", ") + "]";
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if (index > upperBound)
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val = ObjectValue.CreateUnknown (sidx);
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else {
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curIndex [curIndex.Length - 1] = index;
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val = cctx.Adapter.CreateObjectValue (cctx, this, newPath.Append (sidx), elems.GetValue (n), ObjectValueFlags.ArrayElement);
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if (elems.GetValue (n) != null && !cctx.Adapter.IsNull (cctx, elems.GetValue (n))) {
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TypeDisplayData tdata = cctx.Adapter.GetTypeDisplayData (cctx, cctx.Adapter.GetValueType (cctx, elems.GetValue (n)));
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if (!string.IsNullOrEmpty (tdata.NameDisplayString)) {
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try {
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ename = cctx.Adapter.EvaluateDisplayString (cctx, elems.GetValue (n), tdata.NameDisplayString);
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} catch (MissingMemberException) {
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// missing property or otherwise malformed DebuggerDisplay string
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}
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}
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}
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}
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val.Name = ename;
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values [n] = val;
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}
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return values;
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}
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if (!isLastDimension && div == 1) {
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// Return an array element group for each index
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var list = new List<ObjectValue> ();
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for (int i=0; i<count; i++) {
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int index = i + initalIndex + firstItemIndex;
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ObjectValue val;
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// This array must be created at every call to avoid sharing
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// changes with all array groups
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int[] curIndex = new int [baseIndices.Length + 1];
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Array.Copy (baseIndices, curIndex, baseIndices.Length);
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curIndex [curIndex.Length - 1] = index;
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if (index > upperBound)
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val = ObjectValue.CreateUnknown ("");
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else {
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ArrayElementGroup grp = new ArrayElementGroup (cctx, array, curIndex);
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val = grp.CreateObjectValue ();
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}
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list.Add (val);
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}
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return list.ToArray ();
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} else {
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// Too many elements. Split the array.
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// Don't make divisions of 10 elements, min is 100
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if (div == 10)
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div = 100;
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// Create the child groups
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int i = initalIndex + firstItemIndex;
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len += i;
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var list = new List<ObjectValue> ();
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while (i < len) {
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int end = i + div - 1;
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if (end >= len)
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end = len - 1;
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ArrayElementGroup grp = new ArrayElementGroup (cctx, array, baseIndices, i, end);
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list.Add (grp.CreateObjectValue ());
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i += div;
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}
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return list.ToArray ();
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}
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}
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internal static string IndicesToString (int[] indices)
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{
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var sb = new StringBuilder ();
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for (int i = 0; i < indices.Length; i++) {
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if (i > 0)
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sb.Append (',');
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sb.Append (indices[i].ToString ());
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}
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return sb.ToString ();
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}
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internal static int[] StringToIndices (string str)
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{
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var sidx = str.Split (',');
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var idx = new int [sidx.Length];
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for (int i = 0; i < sidx.Length; i++)
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idx[i] = int.Parse (sidx[i]);
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return idx;
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}
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public static string GetArrayDescription (int[] bounds)
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{
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if (bounds.Length == 0)
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return "[...]";
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var sb = new StringBuilder ("[");
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for (int i = 0; i < bounds.Length; i++) {
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if (i > 0)
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sb.Append (", ");
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sb.Append (bounds [i].ToString ());
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}
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sb.Append ("]");
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return sb.ToString ();
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}
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public EvaluationResult SetValue (ObjectPath path, string value, EvaluationOptions options)
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{
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if (path.Length != 2)
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throw new NotSupportedException ();
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int[] idx = StringToIndices (path [1]);
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object val;
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try {
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EvaluationContext cctx = ctx.Clone ();
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EvaluationOptions ops = options ?? cctx.Options;
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ops.AllowMethodEvaluation = true;
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ops.AllowTargetInvoke = true;
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cctx.Options = ops;
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ValueReference var = ctx.Evaluator.Evaluate (ctx, value, array.ElementType);
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val = var.Value;
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val = ctx.Adapter.Convert (ctx, val, array.ElementType);
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array.SetElement (idx, val);
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} catch {
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val = array.GetElement (idx);
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}
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try {
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return ctx.Evaluator.TargetObjectToExpression (ctx, val);
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} catch (Exception ex) {
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ctx.WriteDebuggerError (ex);
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return new EvaluationResult ("? (" + ex.Message + ")");
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}
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}
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public ObjectValue GetValue (ObjectPath path, EvaluationOptions options)
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{
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if (path.Length != 2)
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throw new NotSupportedException ();
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int[] idx = StringToIndices (path [1]);
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object elem = array.GetElement (idx);
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EvaluationContext cctx = ctx.WithOptions (options);
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ObjectValue val = cctx.Adapter.CreateObjectValue (cctx, this, path, elem, ObjectValueFlags.ArrayElement);
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if (elem != null && !cctx.Adapter.IsNull (cctx, elem)) {
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TypeDisplayData tdata = cctx.Adapter.GetTypeDisplayData (cctx, cctx.Adapter.GetValueType (cctx, elem));
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if (!string.IsNullOrEmpty (tdata.NameDisplayString)) {
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try {
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val.Name = cctx.Adapter.EvaluateDisplayString (cctx, elem, tdata.NameDisplayString);
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} catch (MissingMemberException) {
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// missing property or otherwise malformed DebuggerDisplay string
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}
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}
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}
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return val;
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}
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public object GetRawValue (ObjectPath path, EvaluationOptions options)
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{
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if (path.Length != 2)
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throw new NotSupportedException ();
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int[] idx = StringToIndices (path [1]);
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object elem = array.GetElement (idx);
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EvaluationContext cctx = ctx.WithOptions (options);
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return cctx.Adapter.ToRawValue (cctx, new ArrayObjectSource (array, idx), elem);
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}
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public void SetRawValue (ObjectPath path, object value, EvaluationOptions options)
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{
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if (path.Length != 2)
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throw new NotSupportedException ();
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int[] idx = StringToIndices (path [1]);
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EvaluationContext cctx = ctx.WithOptions (options);
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object val = cctx.Adapter.FromRawValue (cctx, value);
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array.SetElement (idx, val);
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}
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}
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class ArrayObjectSource: IObjectSource
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{
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readonly ICollectionAdaptor source;
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readonly string path;
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public ArrayObjectSource (ICollectionAdaptor source, string path)
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{
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this.source = source;
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this.path = path;
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}
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public ArrayObjectSource (ICollectionAdaptor source, int[] index)
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{
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this.source = source;
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this.path = ArrayElementGroup.IndicesToString (index);
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}
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public object Value {
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get {
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return source.GetElement (ArrayElementGroup.StringToIndices (path));
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}
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set {
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source.SetElement (ArrayElementGroup.StringToIndices (path), value);
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}
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}
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}
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}
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