private static string[] GetNonTypeMemberNames(
CoreInternalSyntax.SyntaxList <Syntax.InternalSyntax.MemberDeclarationSyntax> members, ref SingleTypeDeclaration.TypeDeclarationFlags declFlags)
{
bool anyMethodHadExtensionSyntax = false;
bool anyMemberHasAttributes = false;
bool anyNonTypeMembers = false;
var set = PooledHashSet <string> .GetInstance();
foreach (var member in members)
{
AddNonTypeMemberNames(member, set, ref anyNonTypeMembers);
// Check to see if any method contains a 'this' modifier on its first parameter.
// This data is used to determine if a type needs to have its members materialized
// as part of extension method lookup.
if (!anyMethodHadExtensionSyntax && CheckMethodMemberForExtensionSyntax(member))
{
anyMethodHadExtensionSyntax = true;
}
if (!anyMemberHasAttributes && CheckMemberForAttributes(member))
{
anyMemberHasAttributes = true;
}
}
if (anyMethodHadExtensionSyntax)
{
declFlags |= SingleTypeDeclaration.TypeDeclarationFlags.AnyMemberHasExtensionMethodSyntax;
}
if (anyMemberHasAttributes)
{
declFlags |= SingleTypeDeclaration.TypeDeclarationFlags.AnyMemberHasAttributes;
}
if (anyNonTypeMembers)
{
declFlags |= SingleTypeDeclaration.TypeDeclarationFlags.HasAnyNontypeMembers;
}
// PERF: The member names collection tends to be long-lived. Use a string array since
// that uses less memory than a HashSet<string>.
string[] result;
if (set.Count == 0)
{
result = Array.Empty <string>();
}
else
{
result = new string[set.Count];
set.CopyTo(result);
}
set.Free();
return(result);
}
private static ImmutableHashSet <string> GetNonTypeMemberNames(
CoreInternalSyntax.SyntaxList <Syntax.InternalSyntax.MemberDeclarationSyntax> members, ref SingleTypeDeclaration.TypeDeclarationFlags declFlags)
{
bool anyMethodHadExtensionSyntax = false;
bool anyMemberHasAttributes = false;
bool anyNonTypeMembers = false;
var memberNameBuilder = s_memberNameBuilderPool.Allocate();
foreach (var member in members)
{
AddNonTypeMemberNames(member, memberNameBuilder, ref anyNonTypeMembers);
// Check to see if any method contains a 'this' modifier on its first parameter.
// This data is used to determine if a type needs to have its members materialized
// as part of extension method lookup.
if (!anyMethodHadExtensionSyntax && CheckMethodMemberForExtensionSyntax(member))
{
anyMethodHadExtensionSyntax = true;
}
if (!anyMemberHasAttributes && CheckMemberForAttributes(member))
{
anyMemberHasAttributes = true;
}
}
if (anyMethodHadExtensionSyntax)
{
declFlags |= SingleTypeDeclaration.TypeDeclarationFlags.AnyMemberHasExtensionMethodSyntax;
}
if (anyMemberHasAttributes)
{
declFlags |= SingleTypeDeclaration.TypeDeclarationFlags.AnyMemberHasAttributes;
}
if (anyNonTypeMembers)
{
declFlags |= SingleTypeDeclaration.TypeDeclarationFlags.HasAnyNontypeMembers;
}
return(ToImmutableAndFree(memberNameBuilder));
}
private ImmutableArray <SingleNamespaceOrTypeDeclaration> VisitNamespaceChildren(
CSharpSyntaxNode node,
SyntaxList <MemberDeclarationSyntax> members,
CoreInternalSyntax.SyntaxList <Syntax.InternalSyntax.MemberDeclarationSyntax> internalMembers)
{
Debug.Assert(node.Kind() == SyntaxKind.NamespaceDeclaration || (node.Kind() == SyntaxKind.CompilationUnit && _syntaxTree.Options.Kind == SourceCodeKind.Regular));
if (members.Count == 0)
{
return(ImmutableArray <SingleNamespaceOrTypeDeclaration> .Empty);
}
// We look for members that are not allowed in a namespace.
// If there are any we create an implicit class to wrap them.
bool hasGlobalMembers = false;
var childrenBuilder = ArrayBuilder <SingleNamespaceOrTypeDeclaration> .GetInstance();
foreach (var member in members)
{
SingleNamespaceOrTypeDeclaration namespaceOrType = Visit(member);
if (namespaceOrType != null)
{
childrenBuilder.Add(namespaceOrType);
}
else
{
hasGlobalMembers = hasGlobalMembers || member.Kind() != SyntaxKind.IncompleteMember;
}
}
// wrap all members that are defined in a namespace or compilation unit into an implicit type:
if (hasGlobalMembers)
{
//The implicit class is not static and has no extensions
SingleTypeDeclaration.TypeDeclarationFlags declFlags = SingleTypeDeclaration.TypeDeclarationFlags.None;
var memberNames = GetNonTypeMemberNames(internalMembers, ref declFlags);
var container = _syntaxTree.GetReference(node);
childrenBuilder.Add(CreateImplicitClass(memberNames, container, declFlags));
}
return(childrenBuilder.ToImmutableAndFree());
}
private ImmutableArray <SingleNamespaceOrTypeDeclaration> VisitNamespaceChildren(
CSharpSyntaxNode node,
SyntaxList <MemberDeclarationSyntax> members,
CoreInternalSyntax.SyntaxList <Syntax.InternalSyntax.MemberDeclarationSyntax> internalMembers)
{
Debug.Assert(
node.Kind() is SyntaxKind.NamespaceDeclaration or SyntaxKind.FileScopedNamespaceDeclaration ||
(node.Kind() == SyntaxKind.CompilationUnit && _syntaxTree.Options.Kind == SourceCodeKind.Regular));
if (members.Count == 0)
{
return(ImmutableArray <SingleNamespaceOrTypeDeclaration> .Empty);
}
// We look for members that are not allowed in a namespace.
// If there are any we create an implicit class to wrap them.
bool hasGlobalMembers = false;
bool acceptSimpleProgram = node.Kind() == SyntaxKind.CompilationUnit && _syntaxTree.Options.Kind == SourceCodeKind.Regular;
bool hasAwaitExpressions = false;
bool isIterator = false;
bool hasReturnWithExpression = false;
GlobalStatementSyntax firstGlobalStatement = null;
bool hasNonEmptyGlobalStatement = false;
var childrenBuilder = ArrayBuilder <SingleNamespaceOrTypeDeclaration> .GetInstance();
foreach (var member in members)
{
SingleNamespaceOrTypeDeclaration namespaceOrType = Visit(member);
if (namespaceOrType != null)
{
childrenBuilder.Add(namespaceOrType);
}
else if (acceptSimpleProgram && member.IsKind(SyntaxKind.GlobalStatement))
{
var global = (GlobalStatementSyntax)member;
firstGlobalStatement ??= global;
var topLevelStatement = global.Statement;
if (!topLevelStatement.IsKind(SyntaxKind.EmptyStatement))
{
hasNonEmptyGlobalStatement = true;
}
if (!hasAwaitExpressions)
{
hasAwaitExpressions = SyntaxFacts.HasAwaitOperations(topLevelStatement);
}
if (!isIterator)
{
isIterator = SyntaxFacts.HasYieldOperations(topLevelStatement);
}
if (!hasReturnWithExpression)
{
hasReturnWithExpression = SyntaxFacts.HasReturnWithExpression(topLevelStatement);
}
}
else if (!hasGlobalMembers && member.Kind() != SyntaxKind.IncompleteMember)
{
hasGlobalMembers = true;
}
}
// wrap all global statements in a compilation unit into a simple program type:
if (firstGlobalStatement is object)
{
var diagnostics = ImmutableArray <Diagnostic> .Empty;
if (!hasNonEmptyGlobalStatement)
{
var bag = DiagnosticBag.GetInstance();
bag.Add(ErrorCode.ERR_SimpleProgramIsEmpty, ((EmptyStatementSyntax)firstGlobalStatement.Statement).SemicolonToken.GetLocation());
diagnostics = bag.ToReadOnlyAndFree();
}
childrenBuilder.Add(CreateSimpleProgram(firstGlobalStatement, hasAwaitExpressions, isIterator, hasReturnWithExpression, diagnostics));
}
// wrap all members that are defined in a namespace or compilation unit into an implicit type:
if (hasGlobalMembers)
{
//The implicit class is not static and has no extensions
SingleTypeDeclaration.TypeDeclarationFlags declFlags = SingleTypeDeclaration.TypeDeclarationFlags.None;
var memberNames = GetNonTypeMemberNames(internalMembers, ref declFlags, skipGlobalStatements: acceptSimpleProgram);
var container = _syntaxTree.GetReference(node);
childrenBuilder.Add(CreateImplicitClass(memberNames, container, declFlags));
}
return(childrenBuilder.ToImmutableAndFree());
}
