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Building .NET Coverage Tool

, 25 Aug 2009
This article is a walkthrough for building a .NET coverage tool
Coverage.NET_demo.zip
TestApp
TestApp.exe
TestApp.pdb
Tool
Coverage.Counter.dll
Coverage.exe
Mono.Cecil.dll
Mono.Tools.Pdb2Mdb.dll
Coverage.NET_src.zip
Coverage
Common
Instrument
Properties
Report
Coverage.Counter
Properties
Mono.Cecil
src
AUTHORS
ChangeLog
CodeGen
cecil-gen-attributes.rb
cecil-gen-sources.rb
cecil-gen-tests.rb
cecil-gen-types.rb
cecil-gen.rb
cecil-mig.rb
cecil-update-rev
templates
configure
default.build
Makefile
mono-cecil.pc.in
Mono.Cecil
Mono.Cecil.Binary
Mono.Cecil.Cil
Mono.Cecil.dll.sources
Mono.Cecil.Metadata
Mono.Cecil.Signatures
Mono.Xml
ChangeLog
NEWS
README
standalone.make
TODO
Mono.Tools.Pdb2Mdb
Properties
src
ChangeLog
LICENSE
Makefile
pdb2mdb.exe.sources
//
// AssemblyNameReference.cs
//
// Author:
//   Jb Evain (jbevain@gmail.com)
//
// (C) 2005 Jb Evain
//
// 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.
//

namespace Mono.Cecil {

	using System;
	using System.Collections;
	using System.Globalization;
	using System.Security.Cryptography;
	using System.Text;

	using Mono.Cecil.Metadata;

	public class AssemblyNameReference : IMetadataScope, IAnnotationProvider, IReflectionStructureVisitable {

		string m_name;
		string m_culture;
		Version m_version;
		AssemblyFlags m_flags;
		byte [] m_publicKey;
		byte [] m_publicKeyToken;
		AssemblyHashAlgorithm m_hashAlgo;
		byte [] m_hash;
		MetadataToken m_token;
		IDictionary m_annotations;

		bool m_fullNameDiscarded = true;
		string m_fullName;

		public string Name {
			get { return m_name; }
			set {
				m_name = value;
				m_fullNameDiscarded = true;
			}
		}

		public string Culture {
			get { return m_culture; }
			set {
				m_culture = value;
				m_fullNameDiscarded = true;
			}
		}

		public Version Version {
			get { return m_version; }
			set {
				 m_version = value;
				 m_fullNameDiscarded = true;
			}
		}

		public AssemblyFlags Flags {
			get { return m_flags; }
			set { m_flags = value; }
		}

		public bool HasPublicKey {
			get { return (m_flags & AssemblyFlags.PublicKey) != 0; }
			set {
				if (value)
					m_flags |= AssemblyFlags.PublicKey;
				else
					m_flags &= ~AssemblyFlags.PublicKey;
			}
		}

		public bool IsSideBySideCompatible {
			get { return (m_flags & AssemblyFlags.SideBySideCompatible) != 0; }
			set {
				if (value)
					m_flags |= AssemblyFlags.SideBySideCompatible;
				else
					m_flags &= ~AssemblyFlags.SideBySideCompatible;
			}
		}

		public bool IsRetargetable {
			get { return (m_flags & AssemblyFlags.Retargetable) != 0; }
			set {
				if (value)
					m_flags |= AssemblyFlags.Retargetable;
				else
					m_flags &= ~AssemblyFlags.Retargetable;
			}
		}

		public byte [] PublicKey {
			get { return m_publicKey; }
			set {
				m_publicKey = value;
				m_publicKeyToken = null;
				m_fullNameDiscarded = true;
			}
		}

		public byte [] PublicKeyToken {
			get {
#if !CF_1_0
				if ((m_publicKeyToken == null || m_publicKeyToken.Length == 0) && (m_publicKey != null && m_publicKey.Length > 0)) {
					HashAlgorithm ha;
					switch (m_hashAlgo) {
					case AssemblyHashAlgorithm.Reserved:
						ha = MD5.Create (); break;
					default:
						// None default to SHA1
						ha = SHA1.Create (); break;
					}
					byte [] hash = ha.ComputeHash (m_publicKey);
					// we need the last 8 bytes in reverse order
					m_publicKeyToken = new byte [8];
					Array.Copy (hash, (hash.Length - 8), m_publicKeyToken, 0, 8);
					Array.Reverse (m_publicKeyToken, 0, 8);
				}
#endif
				return m_publicKeyToken;
			}
			set {
				m_publicKeyToken = value;
				m_fullNameDiscarded = true;
			}
		}

		public string FullName {
			get {
				if (m_fullName != null && !m_fullNameDiscarded)
					return m_fullName;

				StringBuilder sb = new StringBuilder ();
				string sep = ", ";
				sb.Append (m_name);
				if (m_version != null) {
					sb.Append (sep);
					sb.Append ("Version=");
					sb.Append (m_version.ToString ());
				}
				sb.Append (sep);
				sb.Append ("Culture=");
				sb.Append (m_culture == null || m_culture.Length == 0 ? "neutral" : m_culture);
				sb.Append (sep);
				sb.Append ("PublicKeyToken=");
				if (this.PublicKeyToken != null && m_publicKeyToken.Length > 0) {
					for (int i = 0 ; i < m_publicKeyToken.Length ; i++) {
						sb.Append (m_publicKeyToken [i].ToString ("x2"));
					}
				} else {
					sb.Append ("null");
				}
				m_fullName = sb.ToString ();
				m_fullNameDiscarded = false;
				return m_fullName;
			}
		}

		public static AssemblyNameReference Parse (string fullName)
		{
			if (fullName == null)
				throw new ArgumentNullException ("fullName");
			if (fullName.Length == 0)
				throw new ArgumentException ("Name can not be empty");

			AssemblyNameReference name = new AssemblyNameReference ();
			string [] tokens = fullName.Split (',');
			for (int i = 0; i < tokens.Length; i++) {
				string token = tokens [i].Trim ();

				if (i == 0) {
					name.Name = token;
					continue;
				}

				string [] parts = token.Split ('=');
				if (parts.Length != 2)
					throw new ArgumentException ("Malformed name");

				switch (parts [0]) {
				case "Version":
					name.Version = new Version (parts [1]);
					break;
				case "Culture":
					name.Culture = parts [1];
					break;
				case "PublicKeyToken":
					string pkToken = parts [1];
					if (pkToken == "null")
						break;

					name.PublicKeyToken = new byte [pkToken.Length / 2];
					for (int j = 0; j < name.PublicKeyToken.Length; j++) {
						name.PublicKeyToken [j] = Byte.Parse (pkToken.Substring (j * 2, 2), NumberStyles.HexNumber);
					}
					break;
				}
			}

			return name;
		}

		public AssemblyHashAlgorithm HashAlgorithm
		{
			get { return m_hashAlgo; }
			set { m_hashAlgo = value; }
		}

		public virtual byte [] Hash {
			get { return m_hash; }
			set { m_hash = value; }
		}

		public MetadataToken MetadataToken {
			get { return m_token; }
			set { m_token = value; }
		}

		IDictionary IAnnotationProvider.Annotations {
			get {
				if (m_annotations == null)
					m_annotations = new Hashtable ();
				return m_annotations;
			}
		}

		public AssemblyNameReference () : this (string.Empty, string.Empty, new Version (0, 0, 0, 0))
		{
		}

		public AssemblyNameReference (string name, string culture, Version version)
		{
			if (name == null)
				throw new ArgumentNullException ("name");
			if (culture == null)
				throw new ArgumentNullException ("culture");
			m_name = name;
			m_culture = culture;
			m_version = version;
			m_hashAlgo = AssemblyHashAlgorithm.None;
		}

		public override string ToString ()
		{
			return this.FullName;
		}

		public virtual void Accept (IReflectionStructureVisitor visitor)
		{
			visitor.VisitAssemblyNameReference (this);
		}
	}
}

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License

This article, along with any associated source code and files, is licensed under The MIT License

About the Author

Sergiy Sakharov
Software Developer (Senior)
United Kingdom United Kingdom
No Biography provided

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