Remove `FusionAssemblyIdentity` and `GlobalAssemblyCache` as they are not used (#18334)

4 files changed, 0 insertions, 544 deletions

diff --git a/src/System.Management.Automation/engine/parser/Compiler.cs b/src/System.Management.Automation/engine/parser/Compiler.cs
index cf7527069d..676ed06fcd 100644
--- a/src/System.Management.Automation/engine/parser/Compiler.cs
+++ b/src/System.Management.Automation/engine/parser/Compiler.cs
@@ -2804,12 +2804,6 @@ namespace System.Management.Automation.Language
                     assemblyFileName = Path.GetDirectoryName(scriptFileName) + "\\" + assemblyFileName;
                 }
 
-#if !CORECLR
-                if (!File.Exists(assemblyFileName))
-                {
-                    Microsoft.CodeAnalysis.GlobalAssemblyCache.ResolvePartialName(assemblyName, out assemblyFileName);
-                }
-#endif
                 if (File.Exists(assemblyFileName))
                 {
                     assembly = Assembly.LoadFrom(assemblyFileName);
diff --git a/src/System.Management.Automation/engine/parser/FusionAssemblyIdentity.cs b/src/System.Management.Automation/engine/parser/FusionAssemblyIdentity.cs
deleted file mode 100644
index 79df05d09f..0000000000
--- a/src/System.Management.Automation/engine/parser/FusionAssemblyIdentity.cs
+++ /dev/null
@@ -1,316 +0,0 @@
-// Copyright (c) Microsoft Corporation.
-// Licensed under the MIT License.
-
-// Code in this file was copied from https://github.com/dotnet/roslyn
-
-using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-using System.Reflection;
-using System.Runtime.InteropServices;
-
-#if !CORECLR
-namespace Microsoft.CodeAnalysis
-{
-    internal sealed class FusionAssemblyIdentity
-    {
-        [Flags]
-        internal enum ASM_DISPLAYF
-        {
-            VERSION = 0x01,
-            CULTURE = 0x02,
-            PUBLIC_KEY_TOKEN = 0x04,
-            PUBLIC_KEY = 0x08,
-            CUSTOM = 0x10,
-            PROCESSORARCHITECTURE = 0x20,
-            LANGUAGEID = 0x40,
-            RETARGET = 0x80,
-            CONFIG_MASK = 0x100,
-            MVID = 0x200,
-            CONTENT_TYPE = 0x400,
-            FULL = VERSION | CULTURE | PUBLIC_KEY_TOKEN | RETARGET | PROCESSORARCHITECTURE | CONTENT_TYPE
-        }
-
-        internal enum PropertyId
-        {
-            PUBLIC_KEY = 0,        // 0
-            PUBLIC_KEY_TOKEN,      // 1
-            HASH_VALUE,            // 2
-            NAME,                  // 3
-            MAJOR_VERSION,         // 4
-            MINOR_VERSION,         // 5
-            BUILD_NUMBER,          // 6
-            REVISION_NUMBER,       // 7
-            CULTURE,               // 8
-            PROCESSOR_ID_ARRAY,    // 9
-            OSINFO_ARRAY,          // 10
-            HASH_ALGID,            // 11
-            ALIAS,                 // 12
-            CODEBASE_URL,          // 13
-            CODEBASE_LASTMOD,      // 14
-            NULL_PUBLIC_KEY,       // 15
-            NULL_PUBLIC_KEY_TOKEN, // 16
-            CUSTOM,                // 17
-            NULL_CUSTOM,           // 18
-            MVID,                  // 19
-            FILE_MAJOR_VERSION,    // 20
-            FILE_MINOR_VERSION,    // 21
-            FILE_BUILD_NUMBER,     // 22
-            FILE_REVISION_NUMBER,  // 23
-            RETARGET,              // 24
-            SIGNATURE_BLOB,        // 25
-            CONFIG_MASK,           // 26
-            ARCHITECTURE,          // 27
-            CONTENT_TYPE,          // 28
-            MAX_PARAMS             // 29
-        }
-
-        private static class CANOF
-        {
-            public const uint PARSE_DISPLAY_NAME = 0x1;
-            public const uint SET_DEFAULT_VALUES = 0x2;
-        }
-
-        [ComImport, InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("CD193BC0-B4BC-11d2-9833-00C04FC31D2E")]
-        internal unsafe interface IAssemblyName
-        {
-            void SetProperty(PropertyId id, void* data, uint size);
-
-            [PreserveSig]
-            int GetProperty(PropertyId id, void* data, ref uint size);
-
-            [PreserveSig]
-            int Finalize();
-
-            [PreserveSig]
-            int GetDisplayName(byte* buffer, ref uint characterCount, ASM_DISPLAYF dwDisplayFlags);
-
-            [PreserveSig]
-            int __BindToObject(/*...*/);
-
-            [PreserveSig]
-            int __GetName(/*...*/);
-
-            [PreserveSig]
-            int GetVersion(out uint versionHi, out uint versionLow);
-
-            [PreserveSig]
-            int IsEqual(IAssemblyName pName, uint dwCmpFlags);
-
-            [PreserveSig]
-            int Clone(out IAssemblyName pName);
-        }
-
-        [ComImport, InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("7c23ff90-33af-11d3-95da-00a024a85b51")]
-        internal interface IApplicationContext
-        {
-        }
-
-        // NOTE: The CLR caches assembly identities, but doesn't do so in a threadsafe manner.
-        // Wrap all calls to this with a lock.
-        private static object s_assemblyIdentityGate = new object();
-        private static int CreateAssemblyNameObject(out IAssemblyName ppEnum, string szAssemblyName, uint dwFlags, IntPtr pvReserved)
-        {
-            lock (s_assemblyIdentityGate)
-            {
-                return RealCreateAssemblyNameObject(out ppEnum, szAssemblyName, dwFlags, pvReserved);
-            }
-        }
-
-        [DllImport("clr", EntryPoint = "CreateAssemblyNameObject", CharSet = CharSet.Unicode, PreserveSig = true)]
-        private static extern int RealCreateAssemblyNameObject(out IAssemblyName ppEnum, [MarshalAs(UnmanagedType.LPWStr)]string szAssemblyName, uint dwFlags, IntPtr pvReserved);
-
-        private const int ERROR_INSUFFICIENT_BUFFER = unchecked((int)0x8007007A);
-        private const int FUSION_E_INVALID_NAME = unchecked((int)0x80131047);
-
-        internal static unsafe string GetDisplayName(IAssemblyName nameObject, ASM_DISPLAYF displayFlags)
-        {
-            int hr;
-            uint characterCountIncludingTerminator = 0;
-
-            hr = nameObject.GetDisplayName(null, ref characterCountIncludingTerminator, displayFlags);
-            if (hr == 0)
-            {
-                return string.Empty;
-            }
-
-            if (hr != ERROR_INSUFFICIENT_BUFFER)
-            {
-                Marshal.ThrowExceptionForHR(hr);
-            }
-
-            byte[] data = new byte[(int)characterCountIncludingTerminator * 2];
-            fixed (byte* p = data)
-            {
-                hr = nameObject.GetDisplayName(p, ref characterCountIncludingTerminator, displayFlags);
-                Marshal.ThrowExceptionForHR(hr);
-
-                return Marshal.PtrToStringUni((IntPtr)p, (int)characterCountIncludingTerminator - 1);
-            }
-        }
-
-        internal static unsafe byte[] GetPropertyBytes(IAssemblyName nameObject, PropertyId propertyId)
-        {
-            int hr;
-            uint size = 0;
-
-            hr = nameObject.GetProperty(propertyId, null, ref size);
-            if (hr == 0)
-            {
-                return null;
-            }
-
-            if (hr != ERROR_INSUFFICIENT_BUFFER)
-            {
-                Marshal.ThrowExceptionForHR(hr);
-            }
-
-            byte[] data = new byte[(int)size];
-            fixed (byte* p = data)
-            {
-                hr = nameObject.GetProperty(propertyId, p, ref size);
-                Marshal.ThrowExceptionForHR(hr);
-            }
-
-            return data;
-        }
-
-        internal static unsafe string GetPropertyString(IAssemblyName nameObject, PropertyId propertyId)
-        {
-            byte[] data = GetPropertyBytes(nameObject, propertyId);
-            if (data == null)
-            {
-                return null;
-            }
-
-            fixed (byte* p = data)
-            {
-                return Marshal.PtrToStringUni((IntPtr)p, (data.Length / 2) - 1);
-            }
-        }
-
-        internal static unsafe Version GetVersion(IAssemblyName nameObject)
-        {
-            uint hi, lo;
-            int hr = nameObject.GetVersion(out hi, out lo);
-            if (hr != 0)
-            {
-                Debug.Assert(hr == FUSION_E_INVALID_NAME);
-                return null;
-            }
-
-            return new Version((int)(hi >> 16), (int)(hi & 0xffff), (int)(lo >> 16), (int)(lo & 0xffff));
-        }
-
-        internal static unsafe uint? GetPropertyWord(IAssemblyName nameObject, PropertyId propertyId)
-        {
-            uint result;
-            uint size = sizeof(uint);
-            int hr = nameObject.GetProperty(propertyId, &result, ref size);
-            Marshal.ThrowExceptionForHR(hr);
-
-            if (size == 0)
-            {
-                return null;
-            }
-
-            return result;
-        }
-
-        internal static string GetCulture(IAssemblyName nameObject)
-        {
-            return GetPropertyString(nameObject, PropertyId.CULTURE);
-        }
-
-        internal static ProcessorArchitecture GetProcessorArchitecture(IAssemblyName nameObject)
-        {
-            return (ProcessorArchitecture)(GetPropertyWord(nameObject, PropertyId.ARCHITECTURE) ?? 0);
-        }
-
-        /// <summary>
-        /// Creates <see cref="IAssemblyName"/> object by parsing given display name.
-        /// </summary>
-        internal static IAssemblyName ToAssemblyNameObject(string displayName)
-        {
-            // CLR doesn't handle \0 in the display name well:
-            if (displayName.IndexOf('\0') >= 0)
-            {
-                return null;
-            }
-
-            Debug.Assert(displayName != null);
-            IAssemblyName result;
-            int hr = CreateAssemblyNameObject(out result, displayName, CANOF.PARSE_DISPLAY_NAME, IntPtr.Zero);
-            if (hr != 0)
-            {
-                return null;
-            }
-
-            Debug.Assert(result != null);
-            return result;
-        }
-
-        /// <summary>
-        /// Selects the candidate assembly with the largest version number.  Uses culture as a tie-breaker if it is provided.
-        /// All candidates are assumed to have the same name and must include versions and cultures.
-        /// </summary>
-        internal static IAssemblyName GetBestMatch(IEnumerable<IAssemblyName> candidates, string preferredCultureOpt)
-        {
-            IAssemblyName bestCandidate = null;
-            Version bestVersion = null;
-            string bestCulture = null;
-            foreach (var candidate in candidates)
-            {
-                if (bestCandidate != null)
-                {
-                    Version candidateVersion = GetVersion(candidate);
-                    Debug.Assert(candidateVersion != null);
-
-                    if (bestVersion == null)
-                    {
-                        bestVersion = GetVersion(bestCandidate);
-                        Debug.Assert(bestVersion != null);
-                    }
-
-                    int cmp = bestVersion.CompareTo(candidateVersion);
-                    if (cmp == 0)
-                    {
-                        if (preferredCultureOpt != null)
-                        {
-                            string candidateCulture = GetCulture(candidate);
-                            Debug.Assert(candidateCulture != null);
-
-                            if (bestCulture == null)
-                            {
-                                bestCulture = GetCulture(candidate);
-                                Debug.Assert(bestCulture != null);
-                            }
-
-                            // we have exactly the preferred culture or
-                            // we have neutral culture and the best candidate's culture isn't the preferred one:
-                            if (StringComparer.OrdinalIgnoreCase.Equals(candidateCulture, preferredCultureOpt) ||
-                                candidateCulture.Length == 0 && !StringComparer.OrdinalIgnoreCase.Equals(bestCulture, preferredCultureOpt))
-                            {
-                                bestCandidate = candidate;
-                                bestVersion = candidateVersion;
-                                bestCulture = candidateCulture;
-                            }
-                        }
-                    }
-                    else if (cmp < 0)
-                    {
-                        bestCandidate = candidate;
-                        bestVersion = candidateVersion;
-                    }
-                }
-                else
-                {
-                    bestCandidate = candidate;
-                }
-            }
-
-            return bestCandidate;
-        }
-    }
-}
-#endif // !CORECLR
diff --git a/src/System.Management.Automation/engine/parser/GlobalAssemblyCache.cs b/src/System.Management.Automation/engine/parser/GlobalAssemblyCache.cs
deleted file mode 100644
index 3761c55d3d..0000000000
--- a/src/System.Management.Automation/engine/parser/GlobalAssemblyCache.cs
+++ /dev/null
@@ -1,215 +0,0 @@
-// Copyright (c) Microsoft Corporation.
-// Licensed under the MIT License.
-
-// Code in this file was copied from https://github.com/dotnet/roslyn
-
-using System;
-using System.Collections.Generic;
-using System.Diagnostics;
-using System.Globalization;
-using System.IO;
-using System.Linq;
-using System.Reflection;
-using System.Runtime.InteropServices;
-
-#if !CORECLR // Only enable/port what is needed by CORE CLR.
-namespace Microsoft.CodeAnalysis
-{
-    /// <summary>
-    /// Provides APIs to enumerate and look up assemblies stored in the Global Assembly Cache.
-    /// </summary>
-    internal static class GlobalAssemblyCache
-    {
-        /// <summary>
-        /// Represents the current Processor architecture.
-        /// </summary>
-        public static readonly ProcessorArchitecture[] CurrentArchitectures = (IntPtr.Size == 4)
-            ? new[] { ProcessorArchitecture.None, ProcessorArchitecture.MSIL, ProcessorArchitecture.X86 }
-
-            : new[] { ProcessorArchitecture.None, ProcessorArchitecture.MSIL, ProcessorArchitecture.Amd64 };
-
-#region Interop
-
-        private const int MAX_PATH = 260;
-
-        [ComImport, InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("21b8916c-f28e-11d2-a473-00c04f8ef448")]
-        private interface IAssemblyEnum
-        {
-            [PreserveSig]
-            int GetNextAssembly(out FusionAssemblyIdentity.IApplicationContext ppAppCtx, out FusionAssemblyIdentity.IAssemblyName ppName, uint dwFlags);
-
-            [PreserveSig]
-            int Reset();
-
-            [PreserveSig]
-            int Clone(out IAssemblyEnum ppEnum);
-        }
-
-        [ComImport, Guid("e707dcde-d1cd-11d2-bab9-00c04f8eceae"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
-        private interface IAssemblyCache
-        {
-            void UninstallAssembly();
-
-            void QueryAssemblyInfo(uint dwFlags, [MarshalAs(UnmanagedType.LPWStr)] string pszAssemblyName, ref ASSEMBLY_INFO pAsmInfo);
-
-            void CreateAssemblyCacheItem();
-            void CreateAssemblyScavenger();
-            void InstallAssembly();
-        }
-
-        [StructLayout(LayoutKind.Sequential)]
-        private unsafe struct ASSEMBLY_INFO
-        {
-            public uint cbAssemblyInfo;
-            public uint dwAssemblyFlags;
-            public ulong uliAssemblySizeInKB;
-            public char* pszCurrentAssemblyPathBuf;
-            public uint cchBuf;
-        }
-
-        private enum ASM_CACHE
-        {
-            ZAP = 0x1,
-            GAC = 0x2,                // C:\Windows\Assembly\GAC
-            DOWNLOAD = 0x4,
-            ROOT = 0x8,               // C:\Windows\Assembly
-            GAC_MSIL = 0x10,
-            GAC_32 = 0x20,            // C:\Windows\Assembly\GAC_32
-            GAC_64 = 0x40,            // C:\Windows\Assembly\GAC_64
-            ROOT_EX = 0x80,           // C:\Windows\Microsoft.NET\assembly
-        }
-
-        [DllImport("clr", CharSet = CharSet.Auto, PreserveSig = true)]
-        private static extern int CreateAssemblyEnum(out IAssemblyEnum ppEnum, FusionAssemblyIdentity.IApplicationContext pAppCtx, FusionAssemblyIdentity.IAssemblyName pName, ASM_CACHE dwFlags, IntPtr pvReserved);
-
-        [DllImport("clr", CharSet = CharSet.Auto, PreserveSig = false)]
-        private static extern void CreateAssemblyCache(out IAssemblyCache ppAsmCache, uint dwReserved);
-
-#endregion
-
-        private const int S_OK = 0;
-        private const int S_FALSE = 1;
-
-        // Internal for testing.
-        internal static IEnumerable<FusionAssemblyIdentity.IAssemblyName> GetAssemblyObjects(
-            FusionAssemblyIdentity.IAssemblyName partialNameFilter,
-            ProcessorArchitecture[] architectureFilter)
-        {
-            IAssemblyEnum enumerator;
-
-            int hr = CreateAssemblyEnum(out enumerator, null, partialNameFilter, ASM_CACHE.GAC, IntPtr.Zero);
-            if (hr == S_FALSE)
-            {
-                // no assembly found
-                yield break;
-            }
-
-            if (hr != S_OK)
-            {
-                Exception e = Marshal.GetExceptionForHR(hr);
-                if (e is FileNotFoundException)
-                {
-                    // invalid assembly name:
-                    yield break;
-                }
-
-                if (e != null)
-                {
-                    throw e;
-                }
-                // for some reason it might happen that CreateAssemblyEnum returns non-zero HR that doesn't correspond to any exception:
-                throw new ArgumentException("Invalid assembly name");
-            }
-
-            while (true)
-            {
-                FusionAssemblyIdentity.IAssemblyName nameObject;
-
-                FusionAssemblyIdentity.IApplicationContext applicationContext;
-                hr = enumerator.GetNextAssembly(out applicationContext, out nameObject, 0);
-                if (hr != 0)
-                {
-                    if (hr < 0)
-                    {
-                        Marshal.ThrowExceptionForHR(hr);
-                    }
-
-                    break;
-                }
-
-                if (architectureFilter != null)
-                {
-                    var assemblyArchitecture = FusionAssemblyIdentity.GetProcessorArchitecture(nameObject);
-                    if (!architectureFilter.Contains(assemblyArchitecture))
-                    {
-                        continue;
-                    }
-                }
-
-                yield return nameObject;
-            }
-        }
-
-        /// <summary>
-        /// Looks up specified partial assembly name in the GAC and returns the best matching full assembly name/>.
-        /// </summary>
-        /// <param name="displayName">The display name of an assembly.</param>
-        /// <param name="location">Full path name of the resolved assembly.</param>
-        /// <param name="architectureFilter">The optional processor architecture.</param>
-        /// <param name="preferredCulture">The optional preferred culture information.</param>
-        /// <returns>An assembly identity or null, if <paramref name="displayName"/> can't be resolved.</returns>
-        /// <exception cref="ArgumentNullException"><paramref name="displayName"/> is null.</exception>
-        public static unsafe string ResolvePartialName(
-            string displayName,
-            out string location,
-            ProcessorArchitecture[] architectureFilter = null,
-            CultureInfo preferredCulture = null)
-        {
-            if (displayName == null)
-            {
-                throw new ArgumentNullException("displayName");
-            }
-
-            location = null;
-            FusionAssemblyIdentity.IAssemblyName nameObject = FusionAssemblyIdentity.ToAssemblyNameObject(displayName);
-            if (nameObject == null)
-            {
-                return null;
-            }
-
-            var candidates = GetAssemblyObjects(nameObject, architectureFilter);
-            string cultureName = (preferredCulture != null && !preferredCulture.IsNeutralCulture) ? preferredCulture.Name : null;
-
-            var bestMatch = FusionAssemblyIdentity.GetBestMatch(candidates, cultureName);
-            if (bestMatch == null)
-            {
-                return null;
-            }
-
-            string fullName = FusionAssemblyIdentity.GetDisplayName(bestMatch, FusionAssemblyIdentity.ASM_DISPLAYF.FULL);
-
-            fixed (char* p = new char[MAX_PATH])
-            {
-                ASSEMBLY_INFO info = new ASSEMBLY_INFO
-                {
-                    cbAssemblyInfo = (uint)Marshal.SizeOf(typeof(ASSEMBLY_INFO)),
-                    pszCurrentAssemblyPathBuf = p,
-                    cchBuf = (uint)MAX_PATH
-                };
-
-                IAssemblyCache assemblyCacheObject;
-                CreateAssemblyCache(out assemblyCacheObject, 0);
-                assemblyCacheObject.QueryAssemblyInfo(0, fullName, ref info);
-                Debug.Assert(info.pszCurrentAssemblyPathBuf != null);
-                Debug.Assert(info.pszCurrentAssemblyPathBuf[info.cchBuf - 1] == '\0');
-
-                var result = Marshal.PtrToStringUni((IntPtr)info.pszCurrentAssemblyPathBuf, (int)info.cchBuf - 1);
-                Debug.Assert(result.IndexOf('\0') == -1);
-                location = result;
-            }
-
-            return fullName;
-        }
-    }
-}
-#endif // !CORECLR
diff --git a/src/System.Management.Automation/engine/parser/Parser.cs b/src/System.Management.Automation/engine/parser/Parser.cs
index 31e7618a32..9d80edf650 100644
--- a/src/System.Management.Automation/engine/parser/Parser.cs
+++ b/src/System.Management.Automation/engine/parser/Parser.cs
@@ -5115,13 +5115,6 @@ namespace System.Management.Automation.Language
 
                         assemblyFileName = workingDirectory + @"\" + assemblyFileName;
                     }
-
-#if !CORECLR
-                    if (!File.Exists(assemblyFileName))
-                    {
-                        GlobalAssemblyCache.ResolvePartialName(assemblyName, out assemblyFileName);
-                    }
-#endif
                 }
                 catch
                 {