1 files changed, 117 insertions, 0 deletions
diff --git a/src/lib/util/labeled_value.cc b/src/lib/util/labeled_value.cc
new file mode 100644
index 0000000..9fa184a
--- /dev/null
+++ b/src/lib/util/labeled_value.cc
@@ -0,0 +1,117 @@
+// Copyright (C) 2013-2020 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <util/labeled_value.h>
+
+namespace isc {
+namespace util {
+
+/**************************** LabeledValue ****************************/
+
+LabeledValue::LabeledValue(const int value, const std::string& label)
+    : value_(value), label_(label) {
+    if (label.empty()) {
+        isc_throw(LabeledValueError, "labels cannot be empty");
+    }
+}
+
+LabeledValue::~LabeledValue(){
+}
+
+int
+LabeledValue::getValue() const {
+    return (value_);
+}
+
+std::string
+LabeledValue::getLabel() const {
+    return (label_);
+}
+
+bool
+LabeledValue::operator==(const LabeledValue& other) const {
+    return (this->value_ == other.value_);
+}
+
+bool
+LabeledValue::operator!=(const LabeledValue& other) const {
+    return (this->value_ != other.value_);
+}
+
+bool
+LabeledValue::operator<(const LabeledValue& other) const {
+    return (this->value_ < other.value_);
+}
+
+std::ostream& operator<<(std::ostream& os, const LabeledValue& vlp) {
+    os << vlp.getLabel();
+    return (os);
+}
+
+/**************************** LabeledValueSet ****************************/
+
+const char* LabeledValueSet::UNDEFINED_LABEL = "UNDEFINED";
+
+LabeledValueSet::LabeledValueSet(){
+}
+
+LabeledValueSet::~LabeledValueSet() {
+}
+
+void
+LabeledValueSet::add(LabeledValuePtr entry) {
+    if (!entry) {
+        isc_throw(LabeledValueError, "cannot add an null entry to set");
+    }
+
+    const int value = entry->getValue();
+    if (isDefined(value)) {
+        isc_throw(LabeledValueError,
+                  "value: " << value << " is already defined as: "
+                  << getLabel(value));
+    }
+
+    map_[value] = entry;
+}
+
+void
+LabeledValueSet::add(const int value, const std::string& label) {
+    add(LabeledValuePtr(new LabeledValue(value,label)));
+}
+
+const LabeledValuePtr&
+LabeledValueSet::get(int value) {
+    static LabeledValuePtr undefined;
+    LabeledValueMap::iterator it = map_.find(value);
+    if (it != map_.end()) {
+        return ((*it).second);
+    }
+
+    // Return an empty pointer when not found.
+    return (undefined);
+}
+
+bool
+LabeledValueSet::isDefined(const int value) const {
+    LabeledValueMap::const_iterator it = map_.find(value);
+    return (it != map_.end());
+}
+
+std::string
+LabeledValueSet::getLabel(const int value) const {
+    LabeledValueMap::const_iterator it = map_.find(value);
+    if (it != map_.end()) {
+        const LabeledValuePtr& ptr = (*it).second;
+        return (ptr->getLabel());
+    }
+
+    return (std::string(UNDEFINED_LABEL));
+}
+
+} // namespace isc::util
+} // namespace isc