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//
// PathExtensions.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.Collections.Generic;
using System.Linq;
using System.Text;
using Mono.CodeContracts.Static.AST;
using Mono.CodeContracts.Static.DataStructures;
namespace Mono.CodeContracts.Static.Analysis.HeapAnalysis.Paths {
static class PathExtensions {
public static HashSet<Field> FieldsIn (this Sequence<PathElement> path)
{
var result = new HashSet<Field> ();
if (path != null) {
foreach (PathElement element in path.AsEnumerable ()) {
Field f;
if (element.TryField (out f))
result.Add (f);
}
}
return result;
}
public static string ToCodeString (this PathElement[] path)
{
return PathToString (path);
}
public static string ToCodeString (this Sequence<PathElement> path)
{
return PathToString (path.AsEnumerable ());
}
private static string PathToString (IEnumerable<PathElement> path)
{
bool first = true;
bool isReference = false;
bool isUnmanagedPointer = false;
var sb = new StringBuilder ();
List<PathElement> pathL = path.ToList ();
for (int i = 0; i < pathL.Count; i++) {
PathElement element = pathL [i];
if (element.IsMethodCall && !element.IsGetter && element.IsStatic) {
string oldString = sb.ToString ();
sb = new StringBuilder ();
sb.AppendFormat ("{0}({1})", element, oldString);
} else {
if (!string.IsNullOrEmpty (element.CastTo)) {
string oldString = sb.ToString ();
sb = new StringBuilder ();
sb.AppendFormat ("(({0}{1}){2})", element.CastTo, isUnmanagedPointer ? "*" : "", oldString);
}
sb.Append (isUnmanagedPointer ? "->" : ".");
sb.Append (element.ToString ());
if (element.IsMethodCall && !element.IsGetter)
sb.Append ("()");
}
if (first)
first = false;
int num = (element.IsAddressOf ? 1 : 0) + (element.IsUnmanagedPointer ? 1 : 0) + (element.IsManagedPointer ? 1 : 0);
isUnmanagedPointer = element.IsUnmanagedPointer;
for (int j = 0; j < num; j++) {
if (j + 1 < pathL.Count) {
if (pathL [j + 1].IsDeref)
++j;
} else
isReference = true;
}
}
if (isReference)
return isUnmanagedPointer ? sb.ToString () : "&" + sb;
if (isUnmanagedPointer)
return "*" + sb;
return sb.ToString ();
}
}
}
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