/// <summary>
/// Enclosing declaration is optional when we don't want to get qualified name in the enclosing declaration scope
/// Meaning needs to be specified if the enclosing declaration is given
/// </summary>
private void BuildSymbolDisplay(ISymbol inputSymbol, ISymbolWriter writer, INode enclosingDeclaration = null, SymbolFlags inputMeaning = SymbolFlags.None, SymbolFormatFlags flags = SymbolFormatFlags.None, TypeFormatFlags typeFlags = TypeFormatFlags.None)
{
Contract.Assert(inputSymbol != null);
Contract.Assert(writer != null);
// HINT: To simplify migration we're using "local" functions via delegates.
// This code could be changed in the future, once C# would have local functions.
Action <ISymbol, SymbolFlags> walkSymbol = null;
ISymbol parentSymbol = null;
Action <ISymbol> appendParentTypeArgumentsAndSymbolName = null;
appendParentTypeArgumentsAndSymbolName = (ISymbol symbol) =>
{
if (parentSymbol != null)
{
// Write type arguments of instantiated class/interface here
if ((flags & SymbolFormatFlags.WriteTypeParametersOrArguments) != SymbolFormatFlags.None)
{
if ((symbol.Flags & SymbolFlags.Instantiated) != SymbolFlags.None)
{
// TODO: check types to avoid redundant ToArray call.
BuildDisplayForTypeArgumentsAndDelimiters(
m_checker.GetTypeParametersOfClassOrInterface(parentSymbol),
((ITransientSymbol)symbol).Mapper, writer, enclosingDeclaration);
}
else
{
BuildTypeParameterDisplayFromSymbol(parentSymbol, writer, enclosingDeclaration);
}
}
WritePunctuation(writer, SyntaxKind.DotToken);
}
parentSymbol = symbol;
AppendSymbolNameOnly(symbol, writer);
};
// Let the writer know we just wrote out a symbol. The declaration emitter writer uses
// this to determine if an import it has previously seen (and not written out) needs
// to be written to the file once the walk of the tree is complete.
//
// NOTE(cyrusn): This approach feels somewhat unfortunate. A simple pass over the tree
// up front (for example, during checking) could determine if we need to emit the imports
// and we could then access that data during declaration emit.
writer.TrackSymbol(inputSymbol, enclosingDeclaration, inputMeaning);
walkSymbol = (ISymbol symbol, SymbolFlags meaning) =>
{
if (symbol != null)
{
var accessibleSymbolChain = m_checker.GetAccessibleSymbolChain(symbol, enclosingDeclaration, meaning, (flags & SymbolFormatFlags.UseOnlyExternalAliasing) != SymbolFormatFlags.None);
if (accessibleSymbolChain == null ||
m_checker.NeedsQualification(accessibleSymbolChain[0], enclosingDeclaration, accessibleSymbolChain.Count == 1 ? meaning : GetQualifiedLeftMeaning(meaning)))
{
// Go up and add our parent.
walkSymbol(
m_checker.GetParentOfSymbol(accessibleSymbolChain != null ? accessibleSymbolChain[0] : symbol),
GetQualifiedLeftMeaning(meaning));
}
if (accessibleSymbolChain != null)
{
foreach (var accessibleSymbol in accessibleSymbolChain)
{
appendParentTypeArgumentsAndSymbolName(accessibleSymbol);
}
}
else
{
// If we didn't find accessible symbol chain for this symbol, break if this is external module
if (parentSymbol == null && symbol.DeclarationList.Any(n => HasExternalModuleSymbol(n)))
{
return;
}
// if this is anonymous type break
if ((symbol.Flags & SymbolFlags.TypeLiteral) != SymbolFlags.None || (symbol.Flags & SymbolFlags.ObjectLiteral) != SymbolFlags.None)
{
return;
}
appendParentTypeArgumentsAndSymbolName(symbol);
}
}
};
// Get qualified name if the symbol is not a type parameter
// and there is an enclosing declaration or we specifically
// asked for it
var isTypeParameter = inputSymbol.Flags & SymbolFlags.TypeParameter;
var typeFormatFlag = TypeFormatFlags.UseFullyQualifiedType & typeFlags;
if (isTypeParameter == SymbolFlags.None && (enclosingDeclaration != null || typeFormatFlag != TypeFormatFlags.None))
{
walkSymbol(inputSymbol, inputMeaning);
return;
}
appendParentTypeArgumentsAndSymbolName(inputSymbol);
}
void ISymbolDisplayBuilder.BuildSymbolDisplay(ISymbol symbol, ISymbolWriter writer, INode enclosingDeclaration, SymbolFlags meaning, SymbolFormatFlags flags)
{
BuildSymbolDisplay(symbol, writer, enclosingDeclaration, meaning, flags, typeFlags: TypeFormatFlags.None);
}