#pragma warning restore GU0073 // Member of non-public type should be internal.
internal static bool Uses(ExpressionSyntax assigned, ExpressionSyntax returned, SyntaxNodeAnalysisContext context, PooledSet <SyntaxNode>?visited = null)
{
if (assigned is null ||
returned is null)
{
return(false);
}
using (var assignedPath = MemberPath.PathWalker.Borrow(assigned))
{
var containingType = context.ContainingSymbol.ContainingType;
if (UsedMemberWalker.Uses(returned, assignedPath, Search.TopLevel, containingType, context.SemanticModel, context.CancellationToken))
{
return(true);
}
if (assignedPath.Tokens.TrySingle(out var candidate) &&
containingType.TryFindPropertyRecursive(candidate.ValueText, out var property) &&
property.TrySingleDeclaration(context.CancellationToken, out var declaration) &&
declaration.TryGetSetter(out var setter) &&
Setter.TryFindSingleAssignment(setter, out var assignment))
{
using var set = visited.IncrementUsage();
if (set.Add(candidate.Parent))
{
return(Uses(assignment.Left, returned, context, set));
}
}
}
return(false);
}
internal static bool Uses(SyntaxNode scope, MemberPath.PathWalker memberPath, SyntaxNodeAnalysisContext context)
{
return(UsedMemberWalker.Uses(scope, memberPath, Search.Recursive, context.ContainingSymbol.ContainingType, context.SemanticModel, context.CancellationToken));
}