private static Binder MakeNameBinder(bool isParameter, bool isTypeParameterRef, Symbol memberSymbol, CSharpCompilation compilation, SyntaxTree syntaxTree)
{
Binder binder = new BuckStopsHereBinder(compilation, syntaxTree);
// All binders should have a containing symbol.
Symbol containingSymbol = memberSymbol.ContainingSymbol;
Debug.Assert((object)containingSymbol != null);
binder = binder.WithContainingMemberOrLambda(containingSymbol);
if (isParameter)
{
ImmutableArray <ParameterSymbol> parameters = ImmutableArray <ParameterSymbol> .Empty;
switch (memberSymbol.Kind)
{
case SymbolKind.Method:
parameters = ((MethodSymbol)memberSymbol).Parameters;
break;
case SymbolKind.Property:
parameters = ((PropertySymbol)memberSymbol).Parameters;
break;
case SymbolKind.NamedType:
case SymbolKind.ErrorType:
NamedTypeSymbol typeSymbol = (NamedTypeSymbol)memberSymbol;
if (typeSymbol.IsDelegateType())
{
parameters = typeSymbol.DelegateInvokeMethod.Parameters;
}
break;
}
if (parameters.Length > 0)
{
binder = new WithParametersBinder(parameters, binder);
}
}
else
{
Symbol currentSymbol = memberSymbol;
do
{
switch (currentSymbol.Kind)
{
case SymbolKind.NamedType: // Includes delegates.
case SymbolKind.ErrorType:
NamedTypeSymbol typeSymbol = (NamedTypeSymbol)currentSymbol;
if (typeSymbol.Arity > 0)
{
binder = new WithClassTypeParametersBinder(typeSymbol, binder);
}
break;
case SymbolKind.Method:
MethodSymbol methodSymbol = (MethodSymbol)currentSymbol;
if (methodSymbol.Arity > 0)
{
binder = new WithMethodTypeParametersBinder(methodSymbol, binder);
}
break;
}
currentSymbol = currentSymbol.ContainingSymbol;
} while (isTypeParameterRef && !(currentSymbol is null));
}
return(binder);
}
public override void VisitLocalFunctionStatement(LocalFunctionStatementSyntax node)
{
var body = (CSharpSyntaxNode)node.Body ?? node.ExpressionBody;
LocalFunctionSymbol match = null;
// Don't use LookupLocalFunction because it recurses up the tree, as it
// should be defined in the directly enclosing block (see note below)
Binder possibleScopeBinder = _enclosing;
while (possibleScopeBinder != null && !possibleScopeBinder.IsLocalFunctionsScopeBinder)
{
possibleScopeBinder = possibleScopeBinder.Next;
}
if (possibleScopeBinder != null)
{
foreach (var candidate in possibleScopeBinder.LocalFunctions)
{
if (candidate.Locations[0] == node.Identifier.GetLocation())
{
match = candidate;
}
}
}
bool oldSawYield = _sawYield;
_sawYield = false;
if (match != null)
{
var oldMethod = _containingMemberOrLambda;
_containingMemberOrLambda = match;
Binder addToMap;
if (match.IsGenericMethod)
{
addToMap = new WithMethodTypeParametersBinder(match, _enclosing);
}
else
{
addToMap = _enclosing;
}
AddToMap(node, addToMap);
if (body != null)
{
Visit(body, new InMethodBinder(match, addToMap));
}
_containingMemberOrLambda = oldMethod;
}
else
{
// The enclosing block should have found this node and created a LocalFunctionMethodSymbol
// The code that does so is in LocalScopeBinder.BuildLocalFunctions
if (body != null)
{
// do our best to attempt to bind
Visit(body);
}
}
if (_sawYield)
{
_methodsWithYields.Add(body);
}
_sawYield = oldSawYield;
}
// NOTE: We're not sharing code with the BinderFactory visitor, because we already have the
// member symbol in hand, which makes things much easier.
private static Binder MakeNameBinder(bool isParameter, Symbol memberSymbol, CSharpCompilation compilation)
{
Binder binder = new BuckStopsHereBinder(compilation);
// All binders should have a containing symbol.
Symbol containingSymbol = memberSymbol.ContainingSymbol;
Debug.Assert((object)containingSymbol != null);
binder = binder.WithContainingMemberOrLambda(containingSymbol);
if (isParameter)
{
ImmutableArray<ParameterSymbol> parameters = ImmutableArray<ParameterSymbol>.Empty;
switch (memberSymbol.Kind)
{
case SymbolKind.Method:
parameters = ((MethodSymbol)memberSymbol).Parameters;
break;
case SymbolKind.Property:
parameters = ((PropertySymbol)memberSymbol).Parameters;
break;
case SymbolKind.NamedType:
case SymbolKind.ErrorType:
NamedTypeSymbol typeSymbol = (NamedTypeSymbol)memberSymbol;
if (typeSymbol.IsDelegateType())
{
parameters = typeSymbol.DelegateInvokeMethod.Parameters;
}
break;
}
if (parameters.Length > 0)
{
binder = new WithParametersBinder(parameters, binder);
}
}
else
{
switch (memberSymbol.Kind)
{
case SymbolKind.NamedType: // Includes delegates.
case SymbolKind.ErrorType:
NamedTypeSymbol typeSymbol = (NamedTypeSymbol)memberSymbol;
if (typeSymbol.Arity > 0)
{
binder = new WithClassTypeParametersBinder(typeSymbol, binder);
}
break;
case SymbolKind.Method:
MethodSymbol methodSymbol = (MethodSymbol)memberSymbol;
if (methodSymbol.Arity > 0)
{
binder = new WithMethodTypeParametersBinder(methodSymbol, binder);
}
break;
}
}
return binder;
}
public override void VisitLocalFunctionStatement(LocalFunctionStatementSyntax node)
{
var body = (CSharpSyntaxNode)node.Body ?? node.ExpressionBody;
LocalFunctionSymbol match = null;
// Don't use LookupLocalFunction because it recurses up the tree, as it
// should be defined in the directly enclosing block (see note below)
Binder possibleScopeBinder = _enclosing;
while (possibleScopeBinder != null && !possibleScopeBinder.IsLocalFunctionsScopeBinder)
{
possibleScopeBinder = possibleScopeBinder.Next;
}
if (possibleScopeBinder != null)
{
foreach (var candidate in possibleScopeBinder.LocalFunctions)
{
if (candidate.Locations[0] == node.Identifier.GetLocation())
{
match = candidate;
}
}
}
bool oldSawYield = _sawYield;
_sawYield = false;
if (match != null)
{
var oldMethod = _containingMemberOrLambda;
_containingMemberOrLambda = match;
Binder addToMap;
if (match.IsGenericMethod)
{
addToMap = new WithMethodTypeParametersBinder(match, _enclosing);
}
else
{
addToMap = _enclosing;
}
AddToMap(node, addToMap);
if (body != null)
{
Visit(body, new InMethodBinder(match, addToMap));
}
_containingMemberOrLambda = oldMethod;
}
else
{
// The enclosing block should have found this node and created a LocalFunctionMethodSymbol
// The code that does so is in LocalScopeBinder.BuildLocalFunctions
if (body != null)
{
// do our best to attempt to bind
Visit(body);
}
}
if (_sawYield)
{
_methodsWithYields.Add(body);
}
_sawYield = oldSawYield;
}
