1 files changed, 35 insertions, 0 deletions
diff --git a/lib/gitlab/ci/pipeline/expression/lexeme/logical_operator.rb b/lib/gitlab/ci/pipeline/expression/lexeme/logical_operator.rb
new file mode 100644
index 00000000000..05d5043c06e
--- /dev/null
+++ b/lib/gitlab/ci/pipeline/expression/lexeme/logical_operator.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Ci
+    module Pipeline
+      module Expression
+        module Lexeme
+          class LogicalOperator < Lexeme::Operator
+            # This operator class is design to handle single operators that take two
+            # arguments. Expression::Parser was originally designed to read infix operators,
+            # and so the two operands are called "left" and "right" here. If we wish to
+            # implement an Operator that takes a greater or lesser number of arguments, a
+            # structural change or additional Operator superclass will likely be needed.
+
+            def initialize(left, right)
+              raise OperatorError, 'Invalid left operand' unless left.respond_to? :evaluate
+              raise OperatorError, 'Invalid right operand' unless right.respond_to? :evaluate
+
+              @left = left
+              @right = right
+            end
+
+            def inspect
+              "#{name}(#{@left.inspect}, #{@right.inspect})"
+            end
+
+            def self.type
+              :logical_operator
+            end
+          end
+        end
+      end
+    end
+  end
+end