diff options
Diffstat (limited to 'app/lib/scope_transformer.rb')
-rw-r--r-- | app/lib/scope_transformer.rb | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/app/lib/scope_transformer.rb b/app/lib/scope_transformer.rb new file mode 100644 index 000000000..fdfc6cf13 --- /dev/null +++ b/app/lib/scope_transformer.rb @@ -0,0 +1,40 @@ +# frozen_string_literal: true + +class ScopeTransformer < Parslet::Transform + class Scope + DEFAULT_TERM = 'all' + DEFAULT_ACCESS = %w(read write).freeze + + attr_reader :namespace, :term + + def initialize(scope) + @namespace = scope[:namespace]&.to_s + @access = scope[:access] ? [scope[:access].to_s] : DEFAULT_ACCESS.dup + @term = scope[:term]&.to_s || DEFAULT_TERM + end + + def key + @key ||= [@namespace, @term].compact.join('/') + end + + def access + @access.join('/') + end + + def merge(other_scope) + clone.merge!(other_scope) + end + + def merge!(other_scope) + raise ArgumentError unless other_scope.namespace == namespace && other_scope.term == term + + @access.concat(other_scope.instance_variable_get('@access')) + @access.uniq! + @access.sort! + + self + end + end + + rule(scope: subtree(:scope)) { Scope.new(scope) } +end |