[ONOS-4350] Inter Jar dependency implementation and code restructuring.
Change-Id: Iacac75e4187aed93ce1754c170a9c19707e5b8c3
diff --git a/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/parser/impl/listeners/StatusListener.java b/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/parser/impl/listeners/StatusListener.java
new file mode 100644
index 0000000..81d6b61
--- /dev/null
+++ b/utils/yangutils/plugin/src/main/java/org/onosproject/yangutils/parser/impl/listeners/StatusListener.java
@@ -0,0 +1,127 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.yangutils.parser.impl.listeners;
+
+import org.onosproject.yangutils.datamodel.YangStatus;
+import org.onosproject.yangutils.datamodel.YangStatusType;
+import org.onosproject.yangutils.datamodel.utils.Parsable;
+import org.onosproject.yangutils.datamodel.utils.YangConstructType;
+import org.onosproject.yangutils.parser.antlrgencode.GeneratedYangParser;
+import org.onosproject.yangutils.parser.exceptions.ParserException;
+import org.onosproject.yangutils.parser.impl.TreeWalkListener;
+
+import static org.onosproject.yangutils.datamodel.utils.YangConstructType.STATUS_DATA;
+import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation.ENTRY;
+import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorMessageConstruction.constructListenerErrorMessage;
+import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.INVALID_HOLDER;
+import static org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType.MISSING_HOLDER;
+import static org.onosproject.yangutils.parser.impl.parserutils.ListenerUtil.removeQuotesAndHandleConcat;
+import static org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation.checkStackIsNotEmpty;
+
+/*
+ * Reference: RFC6020 and YANG ANTLR Grammar
+ *
+ * ABNF grammar as per RFC6020
+ * status-stmt = status-keyword sep status-arg-str stmtend
+ * status-arg-str = < a string that matches the rule
+ * status-arg >
+ * status-arg = current-keyword /
+ * obsolete-keyword /
+ * deprecated-keyword
+ *
+ * ANTLR grammar rule
+ * statusStatement : STATUS_KEYWORD status STMTEND;
+ */
+
+/**
+ * Represents listener based call back function corresponding to the "status"
+ * rule defined in ANTLR grammar file for corresponding ABNF rule in RFC 6020.
+ */
+public final class StatusListener {
+
+ private static final String CURRENT_KEYWORD = "current";
+ private static final String DEPRECATED_KEYWORD = "deprecated";
+ private static final String OBSOLETE_KEYWORD = "obsolete";
+
+ /**
+ * Creates a new status listener.
+ */
+ private StatusListener() {
+ }
+
+ /**
+ * It is called when parser receives an input matching the grammar
+ * rule (status), performs validation and updates the data model
+ * tree.
+ *
+ * @param listener listener's object
+ * @param ctx context object of the grammar rule
+ */
+ public static void processStatusEntry(TreeWalkListener listener,
+ GeneratedYangParser.StatusStatementContext ctx) {
+
+ // Check for stack to be non empty.
+ checkStackIsNotEmpty(listener, MISSING_HOLDER, STATUS_DATA, "", ENTRY);
+
+ YangStatusType status = getValidStatus(ctx);
+
+ Parsable tmpData = listener.getParsedDataStack().peek();
+ if (tmpData instanceof YangStatus) {
+ YangStatus yangStatus = (YangStatus) tmpData;
+ yangStatus.setStatus(status);
+ } else {
+ throw new ParserException(constructListenerErrorMessage(INVALID_HOLDER, STATUS_DATA, "", ENTRY));
+ }
+ }
+
+ /**
+ * Validates status value and returns the value from context.
+ *
+ * @param ctx context object of the grammar rule
+ * @return status current/deprecated/obsolete
+ */
+ private static YangStatusType getValidStatus(GeneratedYangParser.StatusStatementContext ctx) {
+
+ YangStatusType status;
+
+ String value = removeQuotesAndHandleConcat(ctx.status().getText());
+ switch (value) {
+ case CURRENT_KEYWORD: {
+ status = YangStatusType.CURRENT;
+ break;
+ }
+ case DEPRECATED_KEYWORD: {
+ status = YangStatusType.DEPRECATED;
+ break;
+ }
+ case OBSOLETE_KEYWORD: {
+ status = YangStatusType.OBSOLETE;
+ break;
+ }
+ default: {
+ ParserException parserException = new ParserException("YANG file error : " +
+ YangConstructType.getYangConstructType(STATUS_DATA) + " " + ctx.status().getText() +
+ " is not valid.");
+ parserException.setLine(ctx.getStart().getLine());
+ parserException.setCharPosition(ctx.getStart().getCharPositionInLine());
+ throw parserException;
+ }
+ }
+
+ return status;
+ }
+}
\ No newline at end of file