internal static bool TryGetDependencyPropertyKeyFieldOrProperty(BackingFieldOrProperty backing, SemanticModel semanticModel, CancellationToken cancellationToken, out BackingFieldOrProperty result)
{
result = default;
if (backing.TryGetAssignedValue(cancellationToken, out var value) &&
semanticModel.TryGetSymbol(value, cancellationToken, out ISymbol symbol))
{
if (symbol is IMethodSymbol method)
{
return(method == KnownSymbols.DependencyProperty.AddOwner &&
value is InvocationExpressionSyntax invocation &&
invocation.Expression is MemberAccessExpressionSyntax member &&
semanticModel.TryGetSymbol(member.Expression, cancellationToken, out ISymbol candidate) &&
BackingFieldOrProperty.TryCreateForDependencyProperty(candidate, out result) &&
TryGetDependencyPropertyKeyFieldOrProperty(result, semanticModel, cancellationToken, out result));
}
else
{
return(symbol is IPropertySymbol property &&
property == KnownSymbols.DependencyPropertyKey.DependencyProperty &&
value is MemberAccessExpressionSyntax memberAccess &&
semanticModel.TryGetSymbol(memberAccess.Expression, cancellationToken, out ISymbol candidate) &&
BackingFieldOrProperty.TryCreateForDependencyProperty(candidate, out result));
}
}
return(false);
}
internal static bool TryGetDependencyPropertyKeyFieldOrProperty(BackingFieldOrProperty backing, SemanticModel semanticModel, CancellationToken cancellationToken, out BackingFieldOrProperty result)
{
result = default;
if (backing.TryGetAssignedValue(cancellationToken, out var value) &&
semanticModel.TryGetSymbol(value, cancellationToken, out var symbol))
{
if (symbol is IMethodSymbol method)
{
return(method == KnownSymbols.DependencyProperty.AddOwner &&
value is InvocationExpressionSyntax {
Expression : MemberAccessExpressionSyntax {
Expression : { } expression
}
} &&
internal static bool TryGetDependencyAddOwnerSourceField(BackingFieldOrProperty fieldOrProperty, SemanticModel semanticModel, CancellationToken cancellationToken, out BackingFieldOrProperty result)
{
result = default;
if (fieldOrProperty.TryGetAssignedValue(cancellationToken, out var value) &&
value is InvocationExpressionSyntax invocation &&
semanticModel.TryGetSymbol(invocation, KnownSymbols.DependencyProperty.AddOwner, cancellationToken, out _))
{
var addOwner = (MemberAccessExpressionSyntax)invocation.Expression;
return(BackingFieldOrProperty.TryCreateForDependencyProperty(
semanticModel.GetSymbolSafe(addOwner.Expression, cancellationToken),
out result));
}
return(false);
}
internal static bool TryGetRegisterInvocation(BackingFieldOrProperty fieldOrProperty, SemanticModel semanticModel, CancellationToken cancellationToken, out InvocationExpressionSyntax result, out IMethodSymbol symbol)
{
symbol = null;
result = null;
if (fieldOrProperty.TryGetAssignedValue(cancellationToken, out var value) &&
value is InvocationExpressionSyntax invocation)
{
if (TryGetRegisterCall(invocation, semanticModel, cancellationToken, out symbol) ||
TryGetRegisterReadOnlyCall(invocation, semanticModel, cancellationToken, out symbol) ||
TryGetRegisterAttachedCall(invocation, semanticModel, cancellationToken, out symbol) ||
TryGetRegisterAttachedReadOnlyCall(invocation, semanticModel, cancellationToken, out symbol))
{
result = invocation;
return(true);
}
}
return(false);
}
