83 lines
2.2 KiB
C#
83 lines
2.2 KiB
C#
//
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// StackInfo`1.cs
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//
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// Authors:
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// Alexander Chebaturkin (chebaturkin@gmail.com)
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//
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// Copyright (C) 2011 Alexander Chebaturkin
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in 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,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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namespace Mono.CodeContracts.Static.Analysis.StackAnalysis {
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struct StackInfo<T> {
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private readonly T[] stack;
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private int depth;
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public StackInfo (int depth, int capacity)
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{
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this.depth = depth;
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this.stack = new T[capacity];
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}
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public StackInfo (StackInfo<T> that)
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{
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this.depth = that.depth;
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this.stack = (T[]) that.stack.Clone ();
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}
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public int Depth {
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get { return this.depth; }
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}
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public T this [int offset] {
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get {
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int index = this.depth - 1 - offset;
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if (index >= 0 && index < this.stack.Length)
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return this.stack [index];
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return default(T);
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}
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}
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public StackInfo<T> Pop (int slots)
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{
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for (int i = this.depth - slots; i < this.depth; ++i) {
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if (i < this.stack.Length)
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this.stack [i] = default(T);
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}
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this.depth -= slots;
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return this;
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}
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public void Push (T info)
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{
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int index = this.depth;
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if (index < this.stack.Length)
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this.stack [index] = info;
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++this.depth;
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}
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public override string ToString ()
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{
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return this.depth.ToString ();
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}
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}
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}
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