[ONOS-3880, 3881] Yang Listener for Module and Sub-Module
Change-Id: Iee75c3e04af9b66ebc38acb3396aa4c54af5a268
diff --git a/src/main/java/org/onosproject/yangutils/parser/impl/listeners/RevisionListener.java b/src/main/java/org/onosproject/yangutils/parser/impl/listeners/RevisionListener.java
index c473c83..0da2f01 100644
--- a/src/main/java/org/onosproject/yangutils/parser/impl/listeners/RevisionListener.java
+++ b/src/main/java/org/onosproject/yangutils/parser/impl/listeners/RevisionListener.java
@@ -16,8 +16,18 @@
package org.onosproject.yangutils.parser.impl.listeners;
+import org.onosproject.yangutils.datamodel.YangModule;
+import org.onosproject.yangutils.datamodel.YangRevision;
+import org.onosproject.yangutils.datamodel.YangSubModule;
+import org.onosproject.yangutils.parser.Parsable;
+import org.onosproject.yangutils.parser.ParsableDataType;
import org.onosproject.yangutils.parser.antlrgencode.GeneratedYangParser;
+import org.onosproject.yangutils.parser.exceptions.ParserException;
import org.onosproject.yangutils.parser.impl.TreeWalkListener;
+import org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorLocation;
+import org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorMessageConstruction;
+import org.onosproject.yangutils.parser.impl.parserutils.ListenerErrorType;
+import org.onosproject.yangutils.parser.impl.parserutils.ListenerValidation;
/*
* Reference: RFC6020 and YANG ANTLR Grammar
@@ -59,17 +69,25 @@
private RevisionListener() {
}
- /**
- * It is called when parser receives an input matching the grammar
- * rule (revision), perform validations and update the data model
- * tree.
- *
- * @param listener Listener's object.
- * @param ctx context object of the grammar rule.
- */
- public static void processRevisionEntry(TreeWalkListener listener, GeneratedYangParser.RevisionStatementContext
- ctx) {
- // TODO method implementation
+ public static void processRevisionEntry(TreeWalkListener listener,
+ GeneratedYangParser.RevisionStatementContext ctx) {
+
+ // Check for stack to be non empty.
+ ListenerValidation.checkStackIsNotEmpty(listener, ListenerErrorType.MISSING_HOLDER,
+ ParsableDataType.REVISION_DATA,
+ String.valueOf(ctx.DATE_ARG().getText()),
+ ListenerErrorLocation.ENTRY);
+
+ // Validate for reverse chronological order of revision & for revision value.
+ if (!validateRevision(listener, ctx)) {
+ return;
+ // TODO to be implemented.
+ }
+
+ YangRevision revisionNode = new YangRevision();
+ revisionNode.setRevDate(String.valueOf(ctx.DATE_ARG().getText()));
+
+ listener.getParsedDataStack().push(revisionNode);
}
/**
@@ -79,8 +97,66 @@
* @param listener Listener's object.
* @param ctx context object of the grammar rule.
*/
- public static void processRevisionExit(TreeWalkListener listener, GeneratedYangParser.RevisionStatementContext
- ctx) {
- // TODO method implementation
+ public static void processRevisionExit(TreeWalkListener listener,
+ GeneratedYangParser.RevisionStatementContext ctx) {
+
+ // Check for stack to be non empty.
+ ListenerValidation
+ .checkStackIsNotEmpty(listener, ListenerErrorType.MISSING_HOLDER, ParsableDataType.REVISION_DATA,
+ String.valueOf(ctx.DATE_ARG().getText()), ListenerErrorLocation.EXIT);
+
+ Parsable tmpRevisionNode = listener.getParsedDataStack().peek();
+ if (tmpRevisionNode instanceof YangRevision) {
+ listener.getParsedDataStack().pop();
+
+ // Check for stack to be non empty.
+ ListenerValidation.checkStackIsNotEmpty(listener, ListenerErrorType.MISSING_HOLDER,
+ ParsableDataType.REVISION_DATA,
+ String.valueOf(ctx.DATE_ARG().getText()),
+ ListenerErrorLocation.EXIT);
+
+ Parsable tmpNode = listener.getParsedDataStack().peek();
+ switch (tmpNode.getParsableDataType()) {
+ case MODULE_DATA: {
+ YangModule module = (YangModule) tmpNode;
+ module.setRevision((YangRevision) tmpRevisionNode);
+ break;
+ }
+ case SUB_MODULE_DATA: {
+ YangSubModule subModule = (YangSubModule) tmpNode;
+ subModule.setRevision((YangRevision) tmpRevisionNode);
+ break;
+ }
+ default:
+ throw new ParserException(
+ ListenerErrorMessageConstruction
+ .constructListenerErrorMessage(ListenerErrorType.INVALID_HOLDER,
+ ParsableDataType.REVISION_DATA,
+ String.valueOf(ctx.DATE_ARG()
+ .getText()),
+ ListenerErrorLocation.EXIT));
+ }
+ } else {
+ throw new ParserException(
+ ListenerErrorMessageConstruction
+ .constructListenerErrorMessage(ListenerErrorType.MISSING_CURRENT_HOLDER,
+ ParsableDataType.REVISION_DATA, String
+ .valueOf(ctx.DATE_ARG()
+ .getText()),
+ ListenerErrorLocation.EXIT));
+ }
}
-}
+
+ /**
+ * Validate revision.
+ *
+ * @param listener Listener's object.
+ * @param ctx context object of the grammar rule.
+ * @return validation result
+ */
+ private static boolean validateRevision(TreeWalkListener listener,
+ GeneratedYangParser.RevisionStatementContext ctx) {
+ // TODO to be implemented
+ return true;
+ }
+}
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