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//
// SourcePositionVisitor.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 SourcePositionVisitor : ExprVisitor {
public struct CodePosition {
public static readonly CodePosition Empty = new CodePosition ();
public CodePosition (int line, int column)
: this ()
{
this.Line = line;
this.Column = column;
}
public int Line { get; private set; }
public int Column { get; private set; }
public bool IsEmpty {
get {
return this.Line == 0 && this.Column == 0;
}
}
public static bool operator < (CodePosition a, CodePosition b)
{
if (a.Line < b.Line) {
return true;
}
if (a.Line > b.Line) {
return false;
}
return a.Column < b.Column;
}
public static bool operator > (CodePosition a, CodePosition b)
{
if (a.Line > b.Line) {
return true;
}
if (a.Line < b.Line) {
return false;
}
return a.Column > b.Column;
}
}
public SourcePositionVisitor (Dictionary<Expr, Instruction> instructionLookup)
{
this.instructionLookup = instructionLookup;
this.SourceCodeFileName = null;
this.StartPosition = CodePosition.Empty;
this.EndPosition = CodePosition.Empty;
}
private Dictionary<Expr, Instruction> instructionLookup;
public string SourceCodeFileName { get; private set; }
public CodePosition StartPosition { get; private set; }
public CodePosition EndPosition { get; private set; }
public override Expr Visit (Expr e)
{
/*
Instruction inst;
if (this.instructionLookup.TryGetValue (e, out inst)) {
var seq = inst.SequencePoint;
if (seq != null) {
this.SourceCodeFileName = seq.Document.Url;
var instStart = new CodePosition(seq.StartLine, seq.StartColumn);
if (this.StartPosition.IsEmpty || instStart < this.StartPosition) {
this.StartPosition = instStart;
}
var instEnd = new CodePosition (seq.EndLine, seq.EndColumn);
if (this.EndPosition.IsEmpty || instEnd > this.EndPosition) {
this.EndPosition = instEnd;
}
}
}
*/
return base.Visit (e);
}
}
}
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