Upstream mikefarah/yq state of the touched files before 253c991996

pkg/yqlib/operator_equals.go

@@ -0,0 +1,48 @@
+package yqlib
+
+func equalsOperator(d *dataTreeNavigator, context Context, expressionNode *ExpressionNode) (Context, error) {
+	log.Debugf("equalsOperation")
+	return crossFunction(d, context, expressionNode, isEquals(false), true)
+}
+
+func isEquals(flip bool) func(d *dataTreeNavigator, context Context, lhs *CandidateNode, rhs *CandidateNode) (*CandidateNode, error) {
+	return func(_ *dataTreeNavigator, _ Context, lhs *CandidateNode, rhs *CandidateNode) (*CandidateNode, error) {
+		value := false
+		log.Debugf("isEquals cross function")
+		if lhs == nil && rhs == nil {
+			log.Debugf("both are nil")
+			owner := &CandidateNode{}
+			return createBooleanCandidate(owner, !flip), nil
+		} else if lhs == nil {
+			log.Debugf("lhs nil, but rhs is not")
+			value := rhs.Tag == "!!null"
+			if flip {
+				value = !value
+			}
+			return createBooleanCandidate(rhs, value), nil
+		} else if rhs == nil {
+			log.Debugf("lhs not nil, but rhs is")
+			value := lhs.Tag == "!!null"
+			if flip {
+				value = !value
+			}
+			return createBooleanCandidate(lhs, value), nil
+		}
+
+		if lhs.Tag == "!!null" {
+			value = (rhs.Tag == "!!null")
+		} else if lhs.Kind == ScalarNode && rhs.Kind == ScalarNode {
+			value = matchKey(lhs.Value, rhs.Value)
+		}
+		log.Debugf("%v == %v ? %v", NodeToString(lhs), NodeToString(rhs), value)
+		if flip {
+			value = !value
+		}
+		return createBooleanCandidate(lhs, value), nil
+	}
+}
+
+func notEqualsOperator(d *dataTreeNavigator, context Context, expressionNode *ExpressionNode) (Context, error) {
+	log.Debugf("notEqualsOperator")
+	return crossFunction(d, context.ReadOnlyClone(), expressionNode, isEquals(true), true)
+}