/// <summary>
/// This will return a StringHandle for the simple name of a namespace name at the given segment index.
/// If no segment index is passed explicitly or the "segment" index is greater than or equal to the number
/// of segments, then the last segment is used. "Segment" in this context refers to part of a namespace
/// name between dots.
///
/// Example: Given a NamespaceDefinitionHandle to "System.Collections.Generic.Test" called 'handle':
///
/// reader.GetString(GetSimpleName(handle)) == "Test"
/// reader.GetString(GetSimpleName(handle, 0)) == "System"
/// reader.GetString(GetSimpleName(handle, 1)) == "Collections"
/// reader.GetString(GetSimpleName(handle, 2)) == "Generic"
/// reader.GetString(GetSimpleName(handle, 3)) == "Test"
/// reader.GetString(GetSimpleName(handle, 1000)) == "Test"
/// </summary>
private StringHandle GetSimpleName(NamespaceDefinitionHandle fullNamespaceHandle, int segmentIndex = Int32.MaxValue)
{
StringHandle handleContainingSegment = fullNamespaceHandle.GetFullName();
Debug.Assert(!handleContainingSegment.IsVirtual);
int lastFoundIndex = fullNamespaceHandle.Index - 1;
int currentSegment = 0;
while (currentSegment < segmentIndex)
{
int currentIndex = _metadataReader.StringStream.IndexOfRaw(lastFoundIndex + 1, '.');
if (currentIndex == -1)
{
break;
}
lastFoundIndex = currentIndex;
++currentSegment;
}
Debug.Assert(lastFoundIndex >= 0 || currentSegment == 0);
// + 1 because lastFoundIndex will either "point" to a '.', or will be -1. Either way,
// we want the next char.
uint resultIndex = (uint)(lastFoundIndex + 1);
return(StringHandle.FromIndex(resultIndex).WithDotTermination());
}
/// <summary>
/// This will return a StringHandle for the simple name of a namespace name at the given segment index.
/// If no segment index is passed explicitly or the "segment" index is greater than or equal to the number
/// of segments, then the last segment is used. "Segment" in this context refers to part of a namespace
/// name between dots.
///
/// Example: Given a NamespaceDefinitionHandle to "System.Collections.Generic.Test" called 'handle':
///
/// reader.GetString(GetSimpleName(handle)) == "Test"
/// reader.GetString(GetSimpleName(handle, 0)) == "System"
/// reader.GetString(GetSimpleName(handle, 1)) == "Collections"
/// reader.GetString(GetSimpleName(handle, 2)) == "Generic"
/// reader.GetString(GetSimpleName(handle, 3)) == "Test"
/// reader.GetString(GetSimpleName(handle, 1000)) == "Test"
/// </summary>
private StringHandle GetSimpleName(NamespaceDefinitionHandle fullNamespaceHandle, int segmentIndex = Int32.MaxValue)
{
StringHandle handleContainingSegment = fullNamespaceHandle.GetFullName();
Debug.Assert(!handleContainingSegment.IsVirtual);
int lastFoundIndex = fullNamespaceHandle.GetHeapOffset() - 1;
int currentSegment = 0;
while (currentSegment < segmentIndex)
{
int currentIndex = _metadataReader.StringStream.IndexOfRaw(lastFoundIndex + 1, '.');
if (currentIndex == -1)
{
break;
}
lastFoundIndex = currentIndex;
++currentSegment;
}
Debug.Assert(lastFoundIndex >= 0 || currentSegment == 0);
// + 1 because lastFoundIndex will either "point" to a '.', or will be -1. Either way,
// we want the next char.
int resultIndex = lastFoundIndex + 1;
return StringHandle.FromOffset(resultIndex).WithDotTermination();
}
/// <summary>
/// Two distinct namespace handles represent the same namespace if their full names are the same. This
/// method merges builders corresponding to such namespace handles.
/// </summary>
private void PopulateNamespaceTable()
{
lock (_namespaceTableAndListLock)
{
if (_namespaceTable != null)
{
return;
}
var namespaceBuilderTable = new Dictionary <NamespaceDefinitionHandle, NamespaceDataBuilder>();
// Make sure to add entry for root namespace. The root namespace is special in that even
// though it might not have types of its own it always has an equivalent representation
// as a nil handle and we don't want to handle it below as dot-terminated synthetic namespace.
// We use NamespaceDefinitionHandle.FromIndexOfFullName(0) instead of default(NamespaceDefinitionHandle) so
// that we never hand back a handle to the user that doesn't have a typeid as that prevents
// round-trip conversion to Handle and back. (We may discover other handle aliases for the
// root namespace (any nil/empty string will do), but we need this one to always be there.
NamespaceDefinitionHandle rootNamespace = NamespaceDefinitionHandle.FromIndexOfFullName(0);
namespaceBuilderTable.Add(
rootNamespace,
new NamespaceDataBuilder(
rootNamespace,
rootNamespace.GetFullName(),
String.Empty));
PopulateTableWithTypeDefinitions(namespaceBuilderTable);
PopulateTableWithExportedTypes(namespaceBuilderTable);
Dictionary <string, NamespaceDataBuilder> stringTable;
MergeDuplicateNamespaces(namespaceBuilderTable, out stringTable);
List <NamespaceDataBuilder> syntheticNamespaces;
ResolveParentChildRelationships(stringTable, out syntheticNamespaces);
var namespaceTable = new Dictionary <NamespaceDefinitionHandle, NamespaceData>();
foreach (var group in namespaceBuilderTable)
{
// Freeze() caches the result, so any many-to-one relationships
// between keys and values will be preserved and efficiently handled.
namespaceTable.Add(group.Key, group.Value.Freeze());
}
if (syntheticNamespaces != null)
{
foreach (var syntheticNamespace in syntheticNamespaces)
{
namespaceTable.Add(syntheticNamespace.Handle, syntheticNamespace.Freeze());
}
}
_namespaceTable = namespaceTable;
_rootNamespace = namespaceTable[rootNamespace];
}
}
public bool Equals(NamespaceDefinitionHandle handle, string value)
{
if (value == null)
{
Throw.ValueArgumentNull();
}
if (handle.HasFullName)
{
return _reader.StringStream.Equals(handle.GetFullName(), value, _reader.utf8Decoder);
}
return value == _reader.namespaceCache.GetFullName(handle);
}
public bool Equals(NamespaceDefinitionHandle handle, string value, bool ignoreCase)
{
if (value == null)
{
Throw.ValueArgumentNull();
}
if (handle.HasFullName)
{
return(_reader.StringHeap.Equals(handle.GetFullName(), value, _reader.UTF8Decoder, ignoreCase));
}
return(value == _reader.NamespaceCache.GetFullName(handle));
}
public bool Equals(NamespaceDefinitionHandle handle, string value)
{
if (value == null)
{
ThrowValueArgumentNull();
}
if (handle.HasFullName)
{
return(reader.StringStream.Equals(handle.GetFullName(), value, reader.utf8Decoder));
}
return(value == reader.namespaceCache.GetFullName(handle));
}
public string GetString(NamespaceDefinitionHandle handle)
{
if (handle.HasFullName)
{
return StringStream.GetString(handle.GetFullName(), utf8Decoder);
}
return namespaceCache.GetFullName(handle);
}
public string GetString(NamespaceDefinitionHandle handle)
{
if (handle.HasFullName)
{
return StringHeap.GetString(handle.GetFullName(), UTF8Decoder);
}
return NamespaceCache.GetFullName(handle);
}
public bool Equals(NamespaceDefinitionHandle handle, string value, bool ignoreCase)
{
if (value == null)
{
Throw.ValueArgumentNull();
}
if (handle.HasFullName)
{
return _reader.StringHeap.Equals(handle.GetFullName(), value, _reader.Utf8Decoder, ignoreCase);
}
return value == _reader.NamespaceCache.GetFullName(handle);
}