internal static void VerifyThrowInternalLength(string parameterValue, string parameterName)
{
ErrorUtilities.VerifyThrowInternalNull((object)parameterValue, parameterName);
if (parameterValue.Length != 0)
{
return;
}
ErrorUtilities.ThrowInternalError("{0} unexpectedly empty", (object)parameterName);
}
/// <summary>
/// Throws an InvalidProjectFileException using the given data.
///
/// PERF WARNING: calling a method that takes a variable number of arguments
/// is expensive, because memory is allocated for the array of arguments -- do
/// not call this method repeatedly in performance-critical scenarios
///
/// </summary>
/// <param name="errorSubCategoryResourceName">The resource string for the
/// error sub-category (can be null).</param>
/// <param name="elementLocation">The <see cref="IElementLocation"/> of the element.</param>
/// <param name="resourceName">The resource string for the error message.</param>
/// <param name="args">Extra arguments for formatting the error message.</param>
private static void ThrowInvalidProject
(
string errorSubCategoryResourceName,
IElementLocation elementLocation,
string resourceName,
params object[] args
)
{
ErrorUtilities.VerifyThrowInternalNull(elementLocation, "elementLocation");
#if DEBUG
if (errorSubCategoryResourceName != null)
{
ResourceUtilities.VerifyResourceStringExists(errorSubCategoryResourceName);
}
ResourceUtilities.VerifyResourceStringExists(resourceName);
#endif
string errorSubCategory = null;
if (errorSubCategoryResourceName != null)
{
errorSubCategory = AssemblyResources.GetString(errorSubCategoryResourceName);
}
string errorCode;
string helpKeyword;
string message = ResourceUtilities.FormatResourceString(out errorCode, out helpKeyword, resourceName, args);
Exception exceptionToThrow = new InvalidProjectFileException(elementLocation.File, elementLocation.Line, elementLocation.Column, 0 /* Unknown end line */, 0 /* Unknown end column */, message, errorSubCategory, errorCode, helpKeyword);
#if FEATURE_MSBUILD_DEBUGGER
if (!DebuggerManager.DebuggingEnabled)
{
throw exceptionToThrow;
}
try
{
throw exceptionToThrow;
}
catch (InvalidProjectFileException ex)
{
// To help out the user debugging their project, break into the debugger here.
// That's because otherwise, since they're debugging our optimized code with JMC on,
// they may not be able to break on this exception at all themselves.
// Also, dump the exception information, as it's hard to see in optimized code.
// Note that we use Trace as Debug.WriteLine is not compiled in release builds, which is
// what we are in here.
Trace.WriteLine(ex.ToString());
Debugger.Break();
throw;
}
#else
throw exceptionToThrow;
#endif
}
private static Assembly GetEntryAssembly()
{
#if FEATURE_ASSEMBLY_GETENTRYASSEMBLY
return(System.Reflection.Assembly.GetEntryAssembly());
#else
var getEntryAssembly = typeof(Assembly).GetMethod("GetEntryAssembly");
ErrorUtilities.VerifyThrowInternalNull(getEntryAssembly, "Assembly does not have the method GetEntryAssembly");
return((Assembly)getEntryAssembly.Invoke(null, Array.Empty <object>()));
#endif
}
private static CultureInfo[] GetValidCultures()
{
var cultureTypesType = s_cultureInfoGetCultureMethod?.GetParameters().FirstOrDefault()?.ParameterType;
ErrorUtilities.VerifyThrow(cultureTypesType?.Name == "CultureTypes" &&
Enum.IsDefined(cultureTypesType, "AllCultures"),
"GetCulture is expected to accept CultureTypes.AllCultures");
var allCulturesEnumValue = Enum.Parse(cultureTypesType, "AllCultures", true);
var cultures = s_cultureInfoGetCultureMethod.Invoke(null, new[] { allCulturesEnumValue }) as CultureInfo[];
ErrorUtilities.VerifyThrowInternalNull(cultures, "CultureInfo.GetCultures should work if all reflection checks pass");
return(cultures);
}
private static void ThrowInvalidProject
(
string errorSubCategoryResourceName,
IElementLocation elementLocation,
string resourceName,
params object[] args
)
{
ErrorUtilities.VerifyThrowInternalNull(elementLocation, nameof(elementLocation));
#if DEBUG
if (errorSubCategoryResourceName != null)
{
ResourceUtilities.VerifyResourceStringExists(errorSubCategoryResourceName);
}
ResourceUtilities.VerifyResourceStringExists(resourceName);
#endif
string errorSubCategory = errorSubCategoryResourceName is null ? null : AssemblyResources.GetString(errorSubCategoryResourceName);
string message = ResourceUtilities.FormatResourceStringStripCodeAndKeyword(out string errorCode, out string helpKeyword, resourceName, args);
throw new InvalidProjectFileException(elementLocation.File, elementLocation.Line, elementLocation.Column, 0 /* Unknown end line */, 0 /* Unknown end column */, message, errorSubCategory, errorCode, helpKeyword);
}
/// <summary>
/// Add or rename an entry in the cache.
/// Old full path may be null iff it was not already in the cache.
/// </summary>
/// <remarks>
/// Must be called within the cache lock.
/// </remarks>
private void RenameEntryInternal(string oldFullPathIfAny, ProjectRootElement projectRootElement)
{
ErrorUtilities.VerifyThrowInternalNull(projectRootElement.FullPath, "FullPath");
if (oldFullPathIfAny != null)
{
ErrorUtilities.VerifyThrowInternalRooted(oldFullPathIfAny);
ErrorUtilities.VerifyThrow(_weakCache[oldFullPathIfAny] == projectRootElement, "Should already be present");
_weakCache.Remove(oldFullPathIfAny);
}
// There may already be a ProjectRootElement in the cache with the new name. In this case we cannot throw an exception;
// we must merely replace it. This is because it may be an unrooted entry
// (and thus gone from the client's point of view) that merely remains
// in the cache because we still have a reference to it from our strong cache.
// Another possibility is that there are two, unrelated, un-saved, in-memory projects that were given the same path.
// Replacing the cache entry does not in itself cause a problem -- if there are any actual users of the old
// entry they will not be affected. There would then exist more than one ProjectRootElement with the same path,
// but clients ought not get themselves into such a state - and unless they save them to disk,
// it may not be a problem. Replacing also doesn't cause a problem for the strong cache,
// as it is never consulted by us, but it is reasonable for us to remove the old entry in that case.
ProjectRootElement existingWeakEntry;
_weakCache.TryGetValue(projectRootElement.FullPath, out existingWeakEntry);
if (existingWeakEntry != null && !Object.ReferenceEquals(existingWeakEntry, projectRootElement))
{
_strongCache.Remove(existingWeakEntry);
RaiseProjectRootElementRemovedFromStrongCache(existingWeakEntry);
}
DebugTraceCache("Adding: ", projectRootElement.FullPath);
_weakCache[projectRootElement.FullPath] = projectRootElement;
BoostEntryInStrongCache(projectRootElement);
}
/// <summary>
/// Returns an existing ProjectRootElement for the specified file path, if any.
/// If none exists, calls the provided delegate to load one, and adds that to the cache.
/// The reason that it calls back to do this is so that the cache is locked between determining
/// that the entry does not exist and adding the entry.
///
/// If <see cref="_autoReloadFromDisk"/> was set to true, and the file on disk has changed since it was cached,
/// it will be reloaded before being returned.
///
/// Thread safe.
/// </summary>
/// <remarks>
/// Never needs to consult the strong cache as well, since if the item is in there, it will
/// not have left the weak cache.
/// If item is found, boosts it to the top of the strong cache.
/// </remarks>
/// <param name="projectFile">The project file which contains the ProjectRootElement. Must be a full path.</param>
/// <param name="openProjectRootElement">The delegate to use to load if necessary. May be null.</param>
/// <param name="isExplicitlyLoaded"><code>true</code> if the project is explicitly loaded, otherwise <code>false</code>.</param>
/// <param name="preserveFormatting"><code>true</code> to the project was loaded with the formated preserved, otherwise <code>false</code>.</param>
/// <returns>The ProjectRootElement instance if one exists. Null otherwise.</returns>
internal ProjectRootElement Get(string projectFile, OpenProjectRootElement openProjectRootElement, bool isExplicitlyLoaded,
bool?preserveFormatting)
{
// Should already have been canonicalized
ErrorUtilities.VerifyThrowInternalRooted(projectFile);
lock (_locker)
{
ProjectRootElement projectRootElement;
_weakCache.TryGetValue(projectFile, out projectRootElement);
if (preserveFormatting != null && projectRootElement != null && projectRootElement.XmlDocument.PreserveWhitespace != preserveFormatting)
{
// Cached project doesn't match preserveFormatting setting, so reload it
projectRootElement.Reload(true, preserveFormatting);
}
if (projectRootElement != null && _autoReloadFromDisk)
{
var fileInfo = FileUtilities.GetFileInfoNoThrow(projectFile);
// If the file doesn't exist on disk, go ahead and use the cached version.
// It's an in-memory project that hasn't been saved yet.
if (fileInfo != null)
{
bool forgetEntry = false;
if (fileInfo.LastWriteTime != projectRootElement.LastWriteTimeWhenRead)
{
// File was changed on disk by external means. Cached version is no longer reliable.
// We could throw here or ignore the problem, but it is a common and reasonable pattern to change a file
// externally and load a new project over it to see the new content. So we dump it from the cache
// to force a load from disk. There might then exist more than one ProjectRootElement with the same path,
// but clients ought not get themselves into such a state - and unless they save them to disk,
// it may not be a problem.
forgetEntry = true;
}
else if (!String.IsNullOrEmpty(Environment.GetEnvironmentVariable("MSBUILDCACHECHECKFILECONTENT")))
{
// QA tests run too fast for the timestamp check to work. This environment variable is for their
// use: it checks the file content as well as the timestamp. That's better than completely disabling
// the cache as we get test coverage of the rest of the cache code.
XmlDocument document = new XmlDocument();
document.PreserveWhitespace = projectRootElement.XmlDocument.PreserveWhitespace;
using (var xtr = XmlReaderExtension.Create(projectRootElement.FullPath, projectRootElement.ProjectRootElementCache.LoadProjectsReadOnly))
{
document.Load(xtr.Reader);
}
string diskContent = document.OuterXml;
string cacheContent = projectRootElement.XmlDocument.OuterXml;
if (diskContent != cacheContent)
{
forgetEntry = true;
}
}
if (forgetEntry)
{
ForgetEntry(projectRootElement);
DebugTraceCache("Out of date dropped from XML cache: ", projectFile);
projectRootElement = null;
}
}
}
if (projectRootElement == null && openProjectRootElement != null)
{
projectRootElement = openProjectRootElement(projectFile, this);
ErrorUtilities.VerifyThrowInternalNull(projectRootElement, "projectRootElement");
ErrorUtilities.VerifyThrow(projectRootElement.FullPath == projectFile, "Got project back with incorrect path");
ErrorUtilities.VerifyThrow(_weakCache.Contains(projectFile), "Open should have renamed into cache and boosted");
}
else if (projectRootElement != null)
{
DebugTraceCache("Satisfied from XML cache: ", projectFile);
BoostEntryInStrongCache(projectRootElement);
}
// An implicit load will never reset the explicit flag.
if (projectRootElement != null && isExplicitlyLoaded)
{
projectRootElement.MarkAsExplicitlyLoaded();
}
return(projectRootElement);
}
}
internal static string ExtractMessageCode(bool msbuildCodeOnly, string message, out string code)
{
ErrorUtilities.VerifyThrowInternalNull(message, "message");
code = null;
int startIndex = 0;
while ((startIndex < message.Length) && char.IsWhiteSpace(message[startIndex]))
{
startIndex++;
}
if (msbuildCodeOnly)
{
if (((((message.Length < (startIndex + 8)) || (message[startIndex] != 'M')) || ((message[startIndex + 1] != 'S') || (message[startIndex + 2] != 'B'))) || (((message[startIndex + 3] < '0') || (message[startIndex + 3] > '9')) || ((message[startIndex + 4] < '0') || (message[startIndex + 4] > '9')))) || (((message[startIndex + 5] < '0') || (message[startIndex + 5] > '9')) || (((message[startIndex + 6] < '0') || (message[startIndex + 6] > '9')) || (message[startIndex + 7] != ':'))))
{
return(message);
}
code = message.Substring(startIndex, 7);
startIndex += 8;
}
else
{
int num2 = startIndex;
while (num2 < message.Length)
{
char ch = message[num2];
if (((ch < 'a') || (ch > 'z')) && ((ch < 'A') || (ch > 'Z')))
{
break;
}
num2++;
}
if (num2 == startIndex)
{
return(message);
}
int num3 = num2;
while (num3 < message.Length)
{
char ch2 = message[num3];
if ((ch2 < '0') || (ch2 > '9'))
{
break;
}
num3++;
}
if (num3 == num2)
{
return(message);
}
if ((num3 == message.Length) || (message[num3] != ':'))
{
return(message);
}
code = message.Substring(startIndex, num3 - startIndex);
startIndex = num3 + 1;
}
while ((startIndex < message.Length) && char.IsWhiteSpace(message[startIndex]))
{
startIndex++;
}
if (startIndex < message.Length)
{
message = message.Substring(startIndex, message.Length - startIndex);
}
return(message);
}
internal override ProjectRootElement Get(string projectFile, OpenProjectRootElement loadProjectRootElement, bool isExplicitlyLoaded,
bool?preserveFormatting)
{
#if DEBUG
// Verify that loadProjectRootElement delegate does not call ProjectRootElementCache.Get().
s_getEntriesNumber++;
ErrorUtilities.VerifyThrow(
s_getEntriesNumber == 1,
"Reentrance to the ProjectRootElementCache.Get function detected."
);
try {
#endif
// Should already have been canonicalized
ErrorUtilities.VerifyThrowInternalRooted(projectFile);
ProjectRootElement projectRootElement;
lock (_locker)
{
_weakCache.TryGetValue(projectFile, out projectRootElement);
if (projectRootElement != null)
{
BoostEntryInStrongCache(projectRootElement);
// An implicit load will never reset the explicit flag.
if (isExplicitlyLoaded)
{
projectRootElement.MarkAsExplicitlyLoaded();
}
}
else
{
DebugTraceCache("Not found in cache: ", projectFile);
}
if (preserveFormatting != null && projectRootElement != null && projectRootElement.XmlDocument.PreserveWhitespace != preserveFormatting)
{
// Cached project doesn't match preserveFormatting setting, so reload it
projectRootElement.Reload(true, preserveFormatting);
}
}
bool projectRootElementIsInvalid = IsInvalidEntry(projectFile, projectRootElement);
if (projectRootElementIsInvalid)
{
DebugTraceCache("Not satisfied from cache: ", projectFile);
ForgetEntryIfExists(projectRootElement);
}
if (loadProjectRootElement == null)
{
if (projectRootElement == null || projectRootElementIsInvalid)
{
return(null);
}
else
{
DebugTraceCache("Satisfied from XML cache: ", projectFile);
return(projectRootElement);
}
}
// Use openProjectRootElement to reload the element if the cache element does not exist or need to be reloaded.
if (projectRootElement == null || projectRootElementIsInvalid)
{
// We do not lock loading with common _locker of the cache, to avoid lock contention.
// Decided also not to lock this section with the key specific locker to avoid the overhead and code overcomplication, as
// it is not likely that two threads would use Get function for the same project simultaneously and it is not a big deal if in some cases we load the same project twice.
projectRootElement = loadProjectRootElement(projectFile, this);
ErrorUtilities.VerifyThrowInternalNull(projectRootElement, "projectRootElement");
ErrorUtilities.VerifyThrow(
projectRootElement.FullPath.Equals(projectFile, StringComparison.OrdinalIgnoreCase),
"Got project back with incorrect path. Expected path: {0}, received path: {1}.",
projectFile,
projectRootElement.FullPath
);
// An implicit load will never reset the explicit flag.
if (isExplicitlyLoaded)
{
projectRootElement.MarkAsExplicitlyLoaded();
}
// Update cache element.
// It is unlikely, but it might be that while without the lock, the projectRootElement in cache was updated by another thread.
// And here its entry will be replaced with the loaded projectRootElement. This is fine:
// if loaded projectRootElement is out of date (so, it changed since the time we loaded it), it will be updated the next time some thread calls Get function.
AddEntry(projectRootElement);
}
else
{
DebugTraceCache("Satisfied from XML cache: ", projectFile);
}
return(projectRootElement);
#if DEBUG
}
finally
{
s_getEntriesNumber--;
}
#endif
}
internal static string ExtractMessageCode(bool msbuildCodeOnly, string message, out string code)
{
ErrorUtilities.VerifyThrowInternalNull((object)message, "message");
code = (string)null;
int startIndex1 = 0;
while (startIndex1 < message.Length && char.IsWhiteSpace(message[startIndex1]))
{
++startIndex1;
}
int startIndex2;
if (msbuildCodeOnly)
{
if (message.Length < startIndex1 + 8 || (int)message[startIndex1] != 77 || ((int)message[startIndex1 + 1] != 83 || (int)message[startIndex1 + 2] != 66) || ((int)message[startIndex1 + 3] < 48 || (int)message[startIndex1 + 3] > 57 || ((int)message[startIndex1 + 4] < 48 || (int)message[startIndex1 + 4] > 57)) || ((int)message[startIndex1 + 5] < 48 || (int)message[startIndex1 + 5] > 57 || ((int)message[startIndex1 + 6] < 48 || (int)message[startIndex1 + 6] > 57) || (int)message[startIndex1 + 7] != 58))
{
return(message);
}
code = message.Substring(startIndex1, 7);
startIndex2 = startIndex1 + 8;
}
else
{
int index1;
for (index1 = startIndex1; index1 < message.Length; ++index1)
{
char ch = message[index1];
if (((int)ch < 97 || (int)ch > 122) && ((int)ch < 65 || (int)ch > 90))
{
break;
}
}
if (index1 == startIndex1)
{
return(message);
}
int index2;
for (index2 = index1; index2 < message.Length; ++index2)
{
char ch = message[index2];
if ((int)ch < 48 || (int)ch > 57)
{
break;
}
}
if (index2 == index1 || index2 == message.Length || (int)message[index2] != 58)
{
return(message);
}
code = message.Substring(startIndex1, index2 - startIndex1);
startIndex2 = index2 + 1;
}
while (startIndex2 < message.Length && char.IsWhiteSpace(message[startIndex2]))
{
++startIndex2;
}
if (startIndex2 < message.Length)
{
message = message.Substring(startIndex2, message.Length - startIndex2);
}
return(message);
}