//
// InstructionExtentVisitor.cs
//
// Authors:
//	Chris Bacon (chrisbacon76@gmail.com)
//
// Copyright (C) 2010 Chris Bacon
//
// 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.Linq;
using System.Text;
using Mono.CodeContracts.Rewrite.Ast;
using Mono.Cecil.Cil;

namespace Mono.CodeContracts.Rewrite.AstVisitors {
	class InstructionExtentVisitor : ExprVisitor {

		public InstructionExtentVisitor (Dictionary<Expr, Instruction> instructionLookup)
		{
			this.instructionLookup = instructionLookup;
		}

		private Dictionary<Expr, Instruction> instructionLookup;
		private List<Instruction> instructions = new List<Instruction> ();

		public IEnumerable<Instruction> Instructions {
			get {
				return this.instructions.OrderBy (x => x.Offset);
			}
		}

		public override Expr Visit (Expr e)
		{
			Instruction inst;
			if (this.instructionLookup.TryGetValue (e, out inst)) {
				this.instructions.Add (inst);
			}
			return base.Visit (e);
		}

	}
}
