public NamedValueDeclaration atIfAbsent(ESSymbol name, Functor0 <NamedValueDeclaration> notFoundAction)
{
StackResidentDeclaration localDeclaration;
if (localBindings.TryGetValue(name, out localDeclaration))
{
return(localDeclaration);
}
NonLocalVariableDeclaration nonLocalVariableDeclaration;
if (nonLocalBindings != null && nonLocalBindings.TryGetValue(name, out nonLocalVariableDeclaration))
{
return(nonLocalVariableDeclaration);
}
if (outerScope == null)
{
return(notFoundAction == null ? null : notFoundAction());
}
return(outerScope.atIfAbsent(name, notFoundAction));
}
