public Declaration(VsExpansion expansion)
{
this.Type = DeclarationType.Snippet;
this.shortcut = expansion.shortcut;
this.title = expansion.title;
this.description = expansion.description;
}
/// <summary>
/// Constructor used by IPy snippets retrieved from the expansion manager
/// </summary>
internal PyCompletion(VsExpansion vsExpansion, IGlyphService glyphService)
: base(vsExpansion.title)
{
this.InsertionText = vsExpansion.title;
this.Description = vsExpansion.description;
this.IconSource = glyphService.GetGlyph(StandardGlyphGroup.GlyphCSharpExpansion, StandardGlyphItem.GlyphItemPublic);
this.VsExpansion = vsExpansion;
}
internal SpringCompletion(IGlyphService glyphService, VsExpansion vsExpansion)
: base(vsExpansion.title)
{
this.DisplayText = vsExpansion.shortcut;
this.InsertionText = vsExpansion.title;
this.Description = vsExpansion.description;
this.IconSource = this.GetIconSource(glyphService, SpringCompletionType.Snippet);
this.VsExpansion = vsExpansion;
}
/// <summary>
/// Caches expansions returned by IVsExpansionManager for a given language services.
/// </summary>
private void CacheLanguageExpansionStructs(IVsExpansionManager expansionManager)
{
if (_expansions.Keys.Count > 0)
{
return;
}
IVsExpansionEnumeration expansionEnumerator = null;
int hr = expansionManager.EnumerateExpansions(
RGuidList.RLanguageServiceGuid,
0, // return all info
null, // return all types
0, // return all types
0, // do not return NULL type
0, // do not return duplicates
out expansionEnumerator
);
ErrorHandler.ThrowOnFailure(hr);
if (expansionEnumerator != null)
{
VsExpansion expansion = new VsExpansion();
IntPtr[] pExpansionInfo = new IntPtr[1];
try {
// Allocate enough memory for one VSExpansion structure.
// This memory is filled in by the Next method.
pExpansionInfo[0] = Marshal.AllocCoTaskMem(Marshal.SizeOf(expansion));
uint count = 0;
expansionEnumerator.GetCount(out count);
for (uint i = 0; i < count; i++)
{
uint fetched = 0;
expansionEnumerator.Next(1, pExpansionInfo, out fetched);
if (fetched > 0)
{
// Convert the returned blob of data into a structure.
expansion = (VsExpansion)Marshal.PtrToStructure(pExpansionInfo[0], typeof(VsExpansion));
if (!string.IsNullOrEmpty(expansion.shortcut))
{
_expansions[expansion.shortcut] = expansion;
}
}
}
} finally {
if (pExpansionInfo[0] != null)
{
Marshal.FreeCoTaskMem(pExpansionInfo[0]);
}
}
}
}
private static VsExpansion ConvertToVsExpansionAndFree(ExpansionBuffer buffer)
{
VsExpansion expansion = new VsExpansion();
ConvertToStringAndFree(ref buffer.descriptionPtr, ref expansion.description);
ConvertToStringAndFree(ref buffer.pathPtr, ref expansion.path);
ConvertToStringAndFree(ref buffer.shortcutPtr, ref expansion.shortcut);
ConvertToStringAndFree(ref buffer.titlePtr, ref expansion.title);
return(expansion);
}
private static VsExpansion ConvertToVsExpansionAndFree(IntPtr expansionPtr)
{
var buffer = (VsExpansionWithIntPtrs)Marshal.PtrToStructure(expansionPtr, typeof(VsExpansionWithIntPtrs));
var expansion = new VsExpansion();
ConvertToStringAndFree(ref buffer.DescriptionPtr, ref expansion.description);
ConvertToStringAndFree(ref buffer.PathPtr, ref expansion.path);
ConvertToStringAndFree(ref buffer.ShortcutPtr, ref expansion.shortcut);
ConvertToStringAndFree(ref buffer.TitlePtr, ref expansion.title);
return(expansion);
}
protected virtual Completion CreateSnippetCompletion(VsExpansion expansion, ImageSource defaultExpansionGlyph, IconDescription defaultIconDescription)
{
if (string.IsNullOrEmpty(expansion.shortcut))
{
return(null);
}
string displayText = expansion.shortcut;
string insertionText = expansion.shortcut;
string description = expansion.description;
return(new Completion(displayText, insertionText, description, defaultExpansionGlyph, defaultIconDescription.ToString()));
}
internal void AddSnippets(ref TestAuthoringScope scope)
{
if (this.expansionsList != null && this.expansionsList.Count > 0)
{
int count = this.expansionsList.Count;
for (int i = 0; i < count; i++)
{
VsExpansion expansionInfo = (VsExpansion)this.expansionsList[i];
scope.AddDeclarations(new TestDeclaration(expansionInfo.title,
expansionInfo.description,
"snippet"));
}
}
}
public static VsExpansion[] EnumerateExpansions(this IVsExpansionManager expansionManager, Guid language, string[] snippetTypes, bool shortcutsOnly)
{
Contract.Requires <ArgumentNullException>(expansionManager != null, "expansionManager");
Contract.Ensures(Contract.Result <VsExpansion[]>() != null);
bool includeNullType = false;
bool includeDuplicates = false;
IVsExpansionEnumeration expEnum = null;
if (ErrorHandler.Succeeded(ErrorHandler.CallWithCOMConvention(() => expansionManager.EnumerateExpansions(language, shortcutsOnly ? 1 : 0, snippetTypes, snippetTypes.Length, includeNullType ? 1 : 0, includeDuplicates ? 1 : 0, out expEnum))))
{
uint count;
ErrorHandler.ThrowOnFailure(expEnum.GetCount(out count));
IntPtr[] raw = new IntPtr[count];
try
{
for (int i = 0; i < raw.Length; i++)
{
raw[i] = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(VsExpansion)));
}
uint fetched;
ErrorHandler.ThrowOnFailure(expEnum.Next(count, raw, out fetched));
VsExpansion[] results = new VsExpansion[fetched];
for (int i = 0; i < results.Length; i++)
{
if (raw[i] != IntPtr.Zero)
{
results[i] = (VsExpansion)Marshal.PtrToStructure(raw[i], typeof(VsExpansion));
}
}
return(results);
}
finally
{
foreach (IntPtr p in raw)
{
Marshal.FreeCoTaskMem(p);
}
}
}
return(new VsExpansion[0]);
}
/// <summary>
/// Caches expansions returned by IVsExpansionManager for a given language services.
/// </summary>
private void CacheLanguageExpansionStructs(IVsExpansionManager expansionManager) {
if (_expansions.Keys.Count > 0) {
return;
}
IVsExpansionEnumeration expansionEnumerator = null;
int hr = expansionManager.EnumerateExpansions(
RGuidList.RLanguageServiceGuid,
0, // return all info
null, // return all types
0, // return all types
0, // do not return NULL type
0, // do not return duplicates
out expansionEnumerator
);
ErrorHandler.ThrowOnFailure(hr);
if (expansionEnumerator != null) {
VsExpansion expansion = new VsExpansion();
IntPtr[] pExpansionInfo = new IntPtr[1];
try {
// Allocate enough memory for one VSExpansion structure.
// This memory is filled in by the Next method.
pExpansionInfo[0] = Marshal.AllocCoTaskMem(Marshal.SizeOf(expansion));
uint count = 0;
expansionEnumerator.GetCount(out count);
for (uint i = 0; i < count; i++) {
uint fetched = 0;
expansionEnumerator.Next(1, pExpansionInfo, out fetched);
if (fetched > 0) {
// Convert the returned blob of data into a structure.
expansion = (VsExpansion)Marshal.PtrToStructure(pExpansionInfo[0], typeof(VsExpansion));
if (!string.IsNullOrEmpty(expansion.shortcut)) {
_expansions[expansion.shortcut] = expansion;
}
}
}
} finally {
if (pExpansionInfo[0] != null) {
Marshal.FreeCoTaskMem(pExpansionInfo[0]);
}
}
}
}
public static VsExpansion[] EnumerateExpansions(this IVsExpansionManager expansionManager, Guid language, string[] snippetTypes, bool shortcutsOnly)
{
Contract.Requires<ArgumentNullException>(expansionManager != null, "expansionManager");
Contract.Ensures(Contract.Result<VsExpansion[]>() != null);
bool includeNullType = false;
bool includeDuplicates = false;
IVsExpansionEnumeration expEnum;
if (ErrorHandler.Succeeded(expansionManager.EnumerateExpansions(language, shortcutsOnly ? 1 : 0, snippetTypes, snippetTypes.Length, includeNullType ? 1 : 0, includeDuplicates ? 1 : 0, out expEnum)))
{
uint count;
ErrorHandler.ThrowOnFailure(expEnum.GetCount(out count));
IntPtr[] raw = new IntPtr[count];
try
{
for (int i = 0; i < raw.Length; i++)
raw[i] = Marshal.AllocCoTaskMem(Marshal.SizeOf(typeof(VsExpansion)));
uint fetched;
ErrorHandler.ThrowOnFailure(expEnum.Next(count, raw, out fetched));
VsExpansion[] results = new VsExpansion[fetched];
for (int i = 0; i < results.Length; i++)
{
if (raw[i] != IntPtr.Zero)
{
results[i] = (VsExpansion)Marshal.PtrToStructure(raw[i], typeof(VsExpansion));
}
}
return results;
}
finally
{
foreach (IntPtr p in raw)
{
Marshal.FreeCoTaskMem(p);
}
}
}
return new VsExpansion[0];
}
private ImmutableArray <SnippetInfo> ExtractSnippetInfo(IVsExpansionEnumeration expansionEnumerator)
{
AssertIsForeground();
var snippetListBuilder = ImmutableArray.CreateBuilder <SnippetInfo>();
uint count = 0;
uint fetched = 0;
VsExpansion snippetInfo = new VsExpansion();
IntPtr[] pSnippetInfo = new IntPtr[1];
try
{
// Allocate enough memory for one VSExpansion structure. This memory is filled in by the Next method.
pSnippetInfo[0] = Marshal.AllocCoTaskMem(Marshal.SizeOf(snippetInfo));
expansionEnumerator.GetCount(out count);
for (uint i = 0; i < count; i++)
{
expansionEnumerator.Next(1, pSnippetInfo, out fetched);
if (fetched > 0)
{
// Convert the returned blob of data into a structure that can be read in managed code.
snippetInfo = ConvertToVsExpansionAndFree(pSnippetInfo[0]);
if (!string.IsNullOrEmpty(snippetInfo.shortcut))
{
snippetListBuilder.Add(new SnippetInfo(snippetInfo.shortcut, snippetInfo.title, snippetInfo.description, snippetInfo.path));
}
}
}
}
finally
{
Marshal.FreeCoTaskMem(pSnippetInfo[0]);
}
return(snippetListBuilder.ToImmutable());
}
private void InsertCodeExpansion(VsExpansion expansion, int startLine, int startColumn, int endLine, int endColumn)
{
// Insert the selected code snippet and start an expansion session
IVsTextLines buffer;
vsTextView.GetBuffer(out buffer);
// Get the IVsExpansion from the current IVsTextLines
IVsExpansion vsExpansion = (IVsExpansion)buffer;
// Call the actual method that performs the snippet insertion
vsExpansion.InsertNamedExpansion(
expansion.title,
expansion.path,
new TextSpan {
iStartIndex = startColumn, iEndIndex = endColumn, iEndLine = endLine, iStartLine = startLine
},
null,
GuidList.guidSpringLanguage,
0,
out expansionSession);
}
private void InsertCodeExpansion(VsExpansion expansion)
{
int startLine, startColumn, endLine, endColumn;
if (completionSession != null)
{
// if there is an active completion session we need to use the trigger point of that session
int position = completionSession.GetTriggerPoint(completionSession.TextView.TextBuffer).GetPosition(textView.TextBuffer.CurrentSnapshot);
startLine = textView.TextBuffer.CurrentSnapshot.GetLineNumberFromPosition(position);
startColumn = position - textView.TextBuffer.CurrentSnapshot.GetLineFromPosition(position).Start.Position;
this.vsTextView.GetCaretPos(out endLine, out endColumn);
}
else
{
// there is no active completion session so we would use the caret position of the view instead
this.vsTextView.GetCaretPos(out startLine, out startColumn);
endColumn = startColumn;
endLine = startLine;
}
InsertCodeExpansion(expansion, startLine, startColumn, endLine, endColumn);
}
private static VsExpansion ConvertToVsExpansionAndFree(IntPtr expansionPtr)
{
var buffer = (VsExpansionWithIntPtrs)Marshal.PtrToStructure(expansionPtr, typeof(VsExpansionWithIntPtrs));
var expansion = new VsExpansion();
ConvertToStringAndFree(ref buffer.DescriptionPtr, ref expansion.description);
ConvertToStringAndFree(ref buffer.PathPtr, ref expansion.path);
ConvertToStringAndFree(ref buffer.ShortcutPtr, ref expansion.shortcut);
ConvertToStringAndFree(ref buffer.TitlePtr, ref expansion.title);
return expansion;
}
private ImmutableArray<SnippetInfo> ExtractSnippetInfo(IVsExpansionEnumeration expansionEnumerator)
{
AssertIsForeground();
var snippetListBuilder = ImmutableArray.CreateBuilder<SnippetInfo>();
uint count = 0;
uint fetched = 0;
VsExpansion snippetInfo = new VsExpansion();
IntPtr[] pSnippetInfo = new IntPtr[1];
try
{
// Allocate enough memory for one VSExpansion structure. This memory is filled in by the Next method.
pSnippetInfo[0] = Marshal.AllocCoTaskMem(Marshal.SizeOf(snippetInfo));
expansionEnumerator.GetCount(out count);
for (uint i = 0; i < count; i++)
{
expansionEnumerator.Next(1, pSnippetInfo, out fetched);
if (fetched > 0)
{
// Convert the returned blob of data into a structure that can be read in managed code.
snippetInfo = ConvertToVsExpansionAndFree(pSnippetInfo[0]);
if (!string.IsNullOrEmpty(snippetInfo.shortcut))
{
snippetListBuilder.Add(new SnippetInfo(snippetInfo.shortcut, snippetInfo.title, snippetInfo.description, snippetInfo.path));
}
}
}
}
finally
{
Marshal.FreeCoTaskMem(pSnippetInfo[0]);
}
return snippetListBuilder.ToImmutable();
}
public int Exec(ref Guid pguidCmdGroup, uint nCmdID, uint nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
{
if (pguidCmdGroup == VSConstants.VSStd2K)
{
if (nCmdID == (uint)VSConstants.VSStd2KCmdID.INSERTSNIPPET || nCmdID == (uint)VSConstants.VSStd2KCmdID.SURROUNDWITH)
{
IVsTextManager2 textManager = (IVsTextManager2)this.serviceProvider.GetService(typeof(SVsTextManager));
IVsExpansionManager expansionManager;
if (VSConstants.S_OK == textManager.GetExpansionManager(out expansionManager))
{
expansionManager.InvokeInsertionUI(
vsTextView,
this,
GuidList.guidSpringLanguage,
new string[] { "Expansion" },
1,
0,
null,
0,
1,
"Insert Snippet",
string.Empty);
}
return(VSConstants.S_OK);
}
if (this.expansionSession != null)
{
// Handle VS Expansion (Code Snippets) keys
if ((nCmdID == (uint)VSConstants.VSStd2KCmdID.TAB))
{
if (expansionSession.GoToNextExpansionField(0) == VSConstants.S_OK)
{
return(VSConstants.S_OK);
}
}
else if ((nCmdID == (uint)VSConstants.VSStd2KCmdID.BACKTAB))
{
if (expansionSession.GoToPreviousExpansionField() == VSConstants.S_OK)
{
return(VSConstants.S_OK);
}
}
else if ((nCmdID == (uint)VSConstants.VSStd2KCmdID.RETURN || nCmdID == (uint)VSConstants.VSStd2KCmdID.CANCEL))
{
if (expansionSession.EndCurrentExpansion(0) == VSConstants.S_OK)
{
expansionSession = null;
return(VSConstants.S_OK);
}
}
}
// Handle Edit.ListMembers or Edit.CompleteWord commands
if ((nCmdID == (uint)VSConstants.VSStd2KCmdID.SHOWMEMBERLIST ||
nCmdID == (uint)VSConstants.VSStd2KCmdID.COMPLETEWORD))
{
if (completionSession != null)
{
completionSession.Dismiss();
}
ShowCompletion();
return(VSConstants.S_OK);
}
// Handle Enter/Tab commit keys
if (completionSession != null && (nCmdID == (uint)VSConstants.VSStd2KCmdID.RETURN || nCmdID == (uint)VSConstants.VSStd2KCmdID.TAB))
{
if (completionSession.SelectedCompletionSet.SelectionStatus.IsSelected)
{
completionSession.Commit();
}
else
{
completionSession.Dismiss();
}
return(VSConstants.S_OK);
}
// Handle Code Snippets after pressing the Tab key without completion
if (completionSession == null && (nCmdID == (uint)VSConstants.VSStd2KCmdID.TAB))
{
IVsTextManager2 expansionManager = (IVsTextManager2)this.serviceProvider.GetService(typeof(SVsTextManager));
SnippetsEnumerable snippetsEnumerator = new SnippetsEnumerable(expansionManager, GuidList.guidSpringLanguage);
SnapshotPoint currentPoint = (this.textView.Caret.Position.BufferPosition) - 1;
ITextStructureNavigator navigator = this.textStructureNavigatorSelectorService.GetTextStructureNavigator(this.textView.TextBuffer);
TextExtent extent = navigator.GetExtentOfWord(currentPoint);
string shortcut = this.textView.TextSnapshot.GetText(extent.Span);
// Search a snippet that matched the token text
VsExpansion expansion = snippetsEnumerator.FirstOrDefault(e => e.title == shortcut);
if (expansion.title != null)
{
// Set the location where the snippet will be inserted
int startLine, startColumn, endLine, endColumn;
this.vsTextView.GetCaretPos(out startLine, out endColumn);
startColumn = endColumn - expansion.title.Length;
endLine = startLine;
// Insert the snippet
InsertCodeExpansion(expansion, startLine, startColumn, endLine, endColumn);
return(VSConstants.S_OK);
}
}
// Hanlde other keys
if ((nCmdID == (uint)VSConstants.VSStd2KCmdID.TYPECHAR))
{
char typedChar = (char)(ushort)Marshal.GetObjectForNativeVariant(pvaIn);
if (completionSession == null)
{
// Handle trigger keys
// Check if the typed char is a trigger
if (IsTriggerKey(typedChar))
{
var result = this.nextCommandTarget.Exec(pguidCmdGroup, nCmdID, nCmdexecopt, pvaIn, pvaOut);
ShowCompletion();
return(result);
}
}
else
{
// Handle commit keys
// Check if the typed char is a commit key
if (IsCommitKey(typedChar))
{
SpringCompletion selectedCompletion = completionSession.SelectedCompletionSet.SelectionStatus.Completion as SpringCompletion;
if (completionSession.SelectedCompletionSet.SelectionStatus.IsSelected &&
selectedCompletion != null && selectedCompletion.Type != null &&
selectedCompletion.Type.Value == SpringCompletionType.Namespace)
{
completionSession.Commit();
}
else
{
completionSession.Dismiss();
}
var result = this.nextCommandTarget.Exec(pguidCmdGroup, nCmdID, nCmdexecopt, pvaIn, pvaOut);
// Check we should trigger completion after comitting the previous session (for example, after typing dot '.')
if (IsTriggerKey(typedChar))
{
ShowCompletion();
}
return(result);
}
else
{
var result = this.nextCommandTarget.Exec(pguidCmdGroup, nCmdID, nCmdexecopt, pvaIn, pvaOut);
completionSession.Filter();
return(result);
}
}
}
// redo the filter if there is a deletion
if (nCmdID == (uint)VSConstants.VSStd2KCmdID.BACKSPACE ||
nCmdID == (uint)VSConstants.VSStd2KCmdID.DELETE)
{
var result = this.nextCommandTarget.Exec(pguidCmdGroup, nCmdID, nCmdexecopt, pvaIn, pvaOut);
if (completionSession != null && !completionSession.IsDismissed)
{
completionSession.Filter();
}
return(result);
}
}
// we haven't handled this command so pass it onto the next target
return(this.nextCommandTarget.Exec(pguidCmdGroup, nCmdID, nCmdexecopt, pvaIn, pvaOut));
}
private void InsertCodeExpansion(VsExpansion expansion, int startLine, int startColumn, int endLine, int endColumn)
{
// Insert the selected code snippet and start an expansion session
IVsTextLines buffer;
vsTextView.GetBuffer(out buffer);
// Get the IVsExpansion from the current IVsTextLines
IVsExpansion vsExpansion = (IVsExpansion)buffer;
// Call the actual method that performs the snippet insertion
vsExpansion.InsertNamedExpansion(
expansion.title,
expansion.path,
new TextSpan { iStartIndex = startColumn, iEndIndex = endColumn, iEndLine = endLine, iStartLine = startLine },
null,
GuidList.guidSpringLanguage,
0,
out expansionSession);
}
private void InsertCodeExpansion(VsExpansion expansion)
{
int startLine, startColumn, endLine, endColumn;
if (completionSession != null)
{
// if there is an active completion session we need to use the trigger point of that session
int position = completionSession.GetTriggerPoint(completionSession.TextView.TextBuffer).GetPosition(textView.TextBuffer.CurrentSnapshot);
startLine = textView.TextBuffer.CurrentSnapshot.GetLineNumberFromPosition(position);
startColumn = position - textView.TextBuffer.CurrentSnapshot.GetLineFromPosition(position).Start.Position;
this.vsTextView.GetCaretPos(out endLine, out endColumn);
}
else
{
// there is no active completion session so we would use the caret position of the view instead
this.vsTextView.GetCaretPos(out startLine, out startColumn);
endColumn = startColumn;
endLine = startLine;
}
InsertCodeExpansion(expansion, startLine, startColumn, endLine, endColumn);
}
protected virtual Completion CreateSnippetCompletion(VsExpansion expansion, ImageSource defaultExpansionGlyph, IconDescription defaultIconDescription)
{
if (string.IsNullOrEmpty(expansion.shortcut))
return null;
string displayText = expansion.shortcut;
string insertionText = expansion.shortcut;
string description = expansion.description;
return new Completion(displayText, insertionText, description, defaultExpansionGlyph, defaultIconDescription.ToString());
}
/// <summary>
/// Gets the snippets.
/// </summary>
/// <returns></returns>
private List <VsExpansion> GetSnippets()
{
var snippets = new List <VsExpansion>();
var textManager = (IVsTextManager)languageService.GetService(typeof(SVsTextManager));
if (textManager != null)
{
var textManager2 = (IVsTextManager2)textManager;
if (textManager2 != null)
{
IVsExpansionManager expansionManager = null;
textManager2.GetExpansionManager(out expansionManager);
if (expansionManager != null)
{
// Tell the environment to fetch all of our snippets.
IVsExpansionEnumeration expansionEnumerator = null;
int ret = expansionManager.EnumerateExpansions(Guids.LuaLanguageService,
0, // return all info
null, // return all types
0, // return all types
1, // include snippets without types
0, // do not include duplicates
out expansionEnumerator);
if (expansionEnumerator != null)
{
// Cache our expansions in an array of
// VSExpansion structures.
uint count = 0;
uint fetched = 0;
VsExpansion expansionInfo = new VsExpansion();
IntPtr[] pExpansionInfo = new IntPtr[1];
// Allocate enough memory for one VSExpansion structure.
// This memory is filled in by the Next method.
pExpansionInfo[0] = Marshal.AllocCoTaskMem(Marshal.SizeOf(expansionInfo));
expansionEnumerator.GetCount(out count);
for (uint i = 0; i < count; i++)
{
expansionEnumerator.Next(1, pExpansionInfo, out fetched);
if (fetched > 0)
{
// Convert the returned blob of data into a
// structure that can be read in managed code.
expansionInfo = (VsExpansion)
Marshal.PtrToStructure(pExpansionInfo[0],
typeof(VsExpansion));
if (!String.IsNullOrEmpty(expansionInfo.shortcut))
{
snippets.Add(expansionInfo);
}
}
}
Marshal.FreeCoTaskMem(pExpansionInfo[0]);
}
}
}
}
return(snippets);
}
/// <summary>
/// Gets the snippets.
/// </summary>
/// <returns></returns>
private List<VsExpansion> GetSnippets()
{
var snippets = new List<VsExpansion>();
var textManager = (IVsTextManager)languageService.GetService(typeof(SVsTextManager));
if (textManager != null)
{
var textManager2 = (IVsTextManager2)textManager;
if (textManager2 != null)
{
IVsExpansionManager expansionManager = null;
textManager2.GetExpansionManager(out expansionManager);
if (expansionManager != null)
{
// Tell the environment to fetch all of our snippets.
IVsExpansionEnumeration expansionEnumerator = null;
int ret = expansionManager.EnumerateExpansions(Guids.LuaLanguageService,
0, // return all info
null, // return all types
0, // return all types
1, // include snippets without types
0, // do not include duplicates
out expansionEnumerator);
if (expansionEnumerator != null)
{
// Cache our expansions in an array of
// VSExpansion structures.
uint count = 0;
uint fetched = 0;
VsExpansion expansionInfo = new VsExpansion();
IntPtr[] pExpansionInfo = new IntPtr[1];
// Allocate enough memory for one VSExpansion structure.
// This memory is filled in by the Next method.
pExpansionInfo[0] = Marshal.AllocCoTaskMem(Marshal.SizeOf(expansionInfo));
expansionEnumerator.GetCount(out count);
for (uint i = 0; i < count; i++)
{
expansionEnumerator.Next(1, pExpansionInfo, out fetched);
if (fetched > 0)
{
// Convert the returned blob of data into a
// structure that can be read in managed code.
expansionInfo = (VsExpansion)
Marshal.PtrToStructure(pExpansionInfo[0],
typeof(VsExpansion));
if (!String.IsNullOrEmpty(expansionInfo.shortcut))
{
snippets.Add(expansionInfo);
}
}
}
Marshal.FreeCoTaskMem(pExpansionInfo[0]);
}
}
}
}
return snippets;
}
private static VsExpansion ConvertToVsExpansionAndFree(ExpansionBuffer buffer) {
VsExpansion expansion = new VsExpansion();
ConvertToStringAndFree(ref buffer.descriptionPtr, ref expansion.description);
ConvertToStringAndFree(ref buffer.pathPtr, ref expansion.path);
ConvertToStringAndFree(ref buffer.shortcutPtr, ref expansion.shortcut);
ConvertToStringAndFree(ref buffer.titlePtr, ref expansion.title);
return expansion;
}
