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//
// BlockWithLabels.cs
//
// Authors:
// Alexander Chebaturkin (chebaturkin@gmail.com)
//
// Copyright (C) 2011 Alexander Chebaturkin
//
// 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 Mono.CodeContracts.Static.ControlFlow.Subroutines;
namespace Mono.CodeContracts.Static.ControlFlow.Blocks {
class BlockWithLabels<Label> : BlockBase, IEquatable<BlockWithLabels<Label>> {
private readonly List<Label> labels;
public BlockWithLabels (SubroutineBase<Label> subroutine, ref int idGen)
: base (subroutine, ref idGen)
{
this.labels = new List<Label> ();
}
public override int Count
{
get { return this.labels.Count; }
}
protected new SubroutineBase<Label> Subroutine
{
get { return (SubroutineBase<Label>) base.Subroutine; }
}
#region IEquatable<BlockWithLabels<Label>> Members
public bool Equals (BlockWithLabels<Label> other)
{
return this == other;
}
#endregion
public override int GetILOffset (APC pc)
{
Label label;
if (TryGetLabel (pc.Index, out label))
return Subroutine.GetILOffset (label);
return 0;
}
public void AddLabel (Label label)
{
this.labels.Add (label);
}
public bool TryGetLastLabel (out Label label)
{
if (this.labels.Count > 0) {
label = this.labels [this.labels.Count - 1];
return true;
}
label = default(Label);
return false;
}
public virtual bool TryGetLabel (int index, out Label label)
{
if (index < this.labels.Count) {
label = this.labels [index];
return true;
}
label = default(Label);
return false;
}
public override string ToString ()
{
return string.Format ("{0}: {1}", this.Index, GetType ().Name);
}
public override Result ForwardDecode<Data, Result, Visitor> (APC pc, Visitor visitor, Data data)
{
Label label;
if (TryGetLabel (pc.Index, out label))
return Subroutine.CodeProvider.Decode<LabelAdapter<Label, Data, Result, Visitor>, Data, Result> (label, new LabelAdapter<Label, Data, Result, Visitor> (visitor, pc), data);
return visitor.Nop (pc, data);
}
}
}
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