[ONOS-3878] YANG Listeners methods for Module and SubModule
Change-Id: Ied2fcf631d302b26ef84af8e98895d8ccb6d6269
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/BaseFileListener.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/BaseFileListener.java
new file mode 100644
index 0000000..355c268
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/BaseFileListener.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2016 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.parser.antlrgencode.GeneratedYangParser;
+import org.onosproject.yangutils.parser.impl.TreeWalkListener;
+
+/*
+ * Reference: RFC6020 and YANG ANTLR Grammar
+ *
+ * ANTLR grammar rule
+ * yangfile : module_stmt
+ * | submodule_stmt;
+ */
+
+/**
+ * Implements call back function corresponding to the "base rule" defined in
+ * ANTLR grammar file.
+ */
+public final class BaseFileListener {
+
+ /**
+ * Creates a new base listener.
+ */
+ private BaseFileListener() {
+ }
+
+ /**
+ * It is called when parser receives an input matching the grammar
+ * rule (yangfile), perform validations and update the data model
+ * tree.
+ *
+ * @param listener Listener's object.
+ * @param ctx context object of the grammar rule.
+ */
+ public static void processYangFileEntry(TreeWalkListener listener, GeneratedYangParser.YangfileContext ctx) {
+ // TODO method implementation
+ }
+
+ /**
+ * It is called when parser exits from grammar rule (yangfile), it perform
+ * validations and update the data model tree.
+ *
+ * @param listener Listener's object.
+ * @param ctx context object of the grammar rule.
+ */
+ public static void processYangFileExit(TreeWalkListener listener, GeneratedYangParser.YangfileContext ctx) {
+ // TODO method implementation
+ }
+}
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/BelongsToListener.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/BelongsToListener.java
new file mode 100644
index 0000000..efb997e
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/BelongsToListener.java
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2016 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.parser.antlrgencode.GeneratedYangParser;
+import org.onosproject.yangutils.parser.impl.TreeWalkListener;
+
+/*
+ * Reference: RFC6020 and YANG ANTLR Grammar
+ *
+ * ABNF grammar as per RFC6020
+ * submodule-header-stmts =
+ * ;; these stmts can appear in any order
+ * [yang-version-stmt stmtsep]
+ * belongs-to-stmt stmtsep
+ *
+ * belongs-to-stmt = belongs-to-keyword sep identifier-arg-str
+ * optsep
+ * "{" stmtsep
+ * prefix-stmt stmtsep
+ * "}"
+ *
+ * ANTLR grammar rule
+ * submodule_header_statement : yang_version_stmt? belongs_to_stmt
+ * | belongs_to_stmt yang_version_stmt?
+ * ;
+ * belongs_to_stmt : BELONGS_TO_KEYWORD IDENTIFIER LEFT_CURLY_BRACE belongs_to_stmt_body RIGHT_CURLY_BRACE;
+ * belongs_to_stmt_body : prefix_stmt;
+ */
+
+/**
+ * Implements listener based call back function corresponding to the "belongs to"
+ * rule defined in ANTLR grammar file for corresponding ABNF rule in RFC 6020.
+ */
+public final class BelongsToListener {
+
+ /**
+ * Creates a new belongto listener.
+ */
+ private BelongsToListener() {
+ }
+
+ /**
+ * It is called when parser receives an input matching the grammar
+ * rule (belongsto), perform validations and update the data model
+ * tree.
+ *
+ * @param listener Listener's object.
+ * @param ctx context object of the grammar rule.
+ */
+ public static void processBelongsToEntry(TreeWalkListener listener,
+ GeneratedYangParser.BelongstoStatementContext ctx) {
+ // TODO method implementation
+ }
+
+ /**
+ * It is called when parser exits from grammar rule (belongsto), it perform
+ * validations and update the data model tree.
+ *
+ * @param listener Listener's object.
+ * @param ctx context object of the grammar rule.
+ */
+ public static void processBelongsToExit(TreeWalkListener listener,
+ GeneratedYangParser.BelongstoStatementContext ctx) {
+ // TODO method implementation
+ }
+}
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/ContactListener.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/ContactListener.java
new file mode 100644
index 0000000..3ad513c
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/ContactListener.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright 2016 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.parser.antlrgencode.GeneratedYangParser;
+import org.onosproject.yangutils.parser.impl.TreeWalkListener;
+
+/*
+ * Reference: RFC6020 and YANG ANTLR Grammar
+ *
+ * ABNF grammar as per RFC6020
+ * meta-stmts = ;; these stmts can appear in any order
+ * [organization-stmt stmtsep]
+ * [contact-stmt stmtsep]
+ * [description-stmt stmtsep]
+ * [reference-stmt stmtsep]
+ * organization-stmt = organization-keyword sep string
+ * optsep stmtend
+ *
+ * ANTLR grammar rule
+ * meta_stmts : organization_stmt? contact_stmt? description_stmt? reference_stmt?
+ * | organization_stmt? contact_stmt? reference_stmt? description_stmt?
+ * | organization_stmt? description_stmt? contact_stmt? reference_stmt?
+ * | organization_stmt? description_stmt? reference_stmt? contact_stmt?
+ * | organization_stmt? reference_stmt? contact_stmt? description_stmt?
+ * | organization_stmt? reference_stmt? description_stmt? contact_stmt?
+ * | contact_stmt? organization_stmt? description_stmt? reference_stmt?
+ * | contact_stmt? organization_stmt? reference_stmt? description_stmt?
+ * | contact_stmt? reference_stmt? organization_stmt? description_stmt?
+ * | contact_stmt? reference_stmt? description_stmt? organization_stmt?
+ * | contact_stmt? description_stmt? reference_stmt? organization_stmt?
+ * | contact_stmt? description_stmt? organization_stmt? reference_stmt?
+ * | reference_stmt? contact_stmt? organization_stmt? description_stmt?
+ * | reference_stmt? contact_stmt? description_stmt? organization_stmt?
+ * | reference_stmt? organization_stmt? contact_stmt? description_stmt?
+ * | reference_stmt? organization_stmt? description_stmt? contact_stmt?
+ * | reference_stmt? description_stmt? organization_stmt? contact_stmt?
+ * | reference_stmt? description_stmt? contact_stmt? organization_stmt?
+ * | description_stmt? reference_stmt? contact_stmt? organization_stmt?
+ * | description_stmt? reference_stmt? organization_stmt? contact_stmt?
+ * | description_stmt? contact_stmt? reference_stmt? organization_stmt?
+ * | description_stmt? contact_stmt? organization_stmt? reference_stmt?
+ * | description_stmt? organization_stmt? contact_stmt? reference_stmt?
+ * | description_stmt? organization_stmt? reference_stmt? contact_stmt?
+ * ;
+ * organization_stmt : ORGANIZATION_KEYWORD string STMTEND;
+ */
+
+/**
+ * Implements listener based call back function corresponding to the "contact"
+ * rule defined in ANTLR grammar file for corresponding ABNF rule in RFC 6020.
+ */
+public final class ContactListener {
+
+ /**
+ * Creates a new contact listener.
+ */
+ private ContactListener() {
+ }
+
+ /**
+ * It is called when parser receives an input matching the grammar
+ * rule (contact), perform validations and update the data model
+ * tree.
+ *
+ * @param listener Listener's object.
+ * @param ctx context object of the grammar rule.
+ */
+ public static void processContactEntry(TreeWalkListener listener, GeneratedYangParser.ContactStatementContext ctx) {
+ // TODO method implementation
+ }
+}
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/ImportListener.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/ImportListener.java
new file mode 100644
index 0000000..ef53b3d
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/ImportListener.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2016 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.parser.antlrgencode.GeneratedYangParser;
+import org.onosproject.yangutils.parser.impl.TreeWalkListener;
+
+/*
+ * Reference: RFC6020 and YANG ANTLR Grammar
+ *
+ * ABNF grammar as per RFC6020
+ * linkage-stmts = ;; these stmts can appear in any order
+ * *(import-stmt stmtsep)
+ * *(include-stmt stmtsep)
+ *
+ * import-stmt = import-keyword sep identifier-arg-str optsep
+ * "{" stmtsep
+ * prefix-stmt stmtsep
+ * [revision-date-stmt stmtsep]
+ * "}"
+ *
+ * ANTLR grammar rule
+ * linkage_stmts : (import_stmt
+ * | include_stmt)*;
+ * import_stmt : IMPORT_KEYWORD IDENTIFIER LEFT_CURLY_BRACE import_stmt_body
+ * RIGHT_CURLY_BRACE;
+ * import_stmt_body : prefix_stmt revision_date_stmt?;
+ */
+
+/**
+ * Implements listener based call back function corresponding to the "import"
+ * rule defined in ANTLR grammar file for corresponding ABNF rule in RFC 6020.
+ */
+public final class ImportListener {
+
+ /**
+ * Creates a new import listener.
+ */
+ private ImportListener() {
+ }
+
+ /**
+ * It is called when parser receives an input matching the grammar
+ * rule (import), perform validations and update the data model
+ * tree.
+ *
+ * @param listener Listener's object.
+ * @param ctx context object of the grammar rule.
+ */
+ public static void processImportEntry(TreeWalkListener listener, GeneratedYangParser.ImportStatementContext ctx) {
+ // TODO method implementation
+ }
+
+ /**
+ * It is called when parser exits from grammar rule (import), it perform
+ * validations and update the data model tree.
+ *
+ * @param listener Listener's object.
+ * @param ctx context object of the grammar rule.
+ */
+ public static void processImportExit(TreeWalkListener listener, GeneratedYangParser.ImportStatementContext ctx) {
+ // TODO method implementation
+ }
+}
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/IncludeListener.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/IncludeListener.java
new file mode 100644
index 0000000..bc78e7d
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/IncludeListener.java
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2016 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.parser.antlrgencode.GeneratedYangParser;
+import org.onosproject.yangutils.parser.impl.TreeWalkListener;
+
+/*
+ * Reference: RFC6020 and YANG ANTLR Grammar
+ *
+ * ABNF grammar as per RFC6020
+ * linkage-stmts = ;; these stmts can appear in any order
+ * *(import-stmt stmtsep)
+ * *(include-stmt stmtsep)
+ *
+ * include-stmt = include-keyword sep identifier-arg-str optsep
+ * (";" /
+ * "{" stmtsep
+ * [revision-date-stmt stmtsep]
+ * "}")
+ *
+ * ANTLR grammar rule
+ * linkage_stmts : (import_stmt
+ * | include_stmt)*;
+ * include_stmt : INCLUDE_KEYWORD IDENTIFIER (STMTEND | LEFT_CURLY_BRACE
+ * revision_date_stmt_body? RIGHT_CURLY_BRACE);
+ */
+
+/**
+ * Implements listener based call back function corresponding to the "include"
+ * rule defined in ANTLR grammar file for corresponding ABNF rule in RFC 6020.
+ */
+public final class IncludeListener {
+
+ /**
+ * Creates a new include listener.
+ */
+ private IncludeListener() {
+ }
+
+ /**
+ * It is called when parser receives an input matching the grammar
+ * rule (include), perform validations and update the data model
+ * tree.
+ *
+ * @param listener Listener's object.
+ * @param ctx context object of the grammar rule.
+ */
+ public static void processIncludeEntry(TreeWalkListener listener, GeneratedYangParser.IncludeStatementContext ctx) {
+ // TODO method implementation
+ }
+
+ /**
+ * It is called when parser exits from grammar rule (include), it perform
+ * validations and update the data model tree.
+ *
+ * @param listener Listener's object.
+ * @param ctx context object of the grammar rule.
+ */
+ public static void processIncludeExit(TreeWalkListener listener, GeneratedYangParser.IncludeStatementContext ctx) {
+ // TODO method implementation
+ }
+}
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/ModuleListener.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/ModuleListener.java
new file mode 100644
index 0000000..c83b30d
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/ModuleListener.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2016 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.parser.antlrgencode.GeneratedYangParser;
+import org.onosproject.yangutils.parser.impl.TreeWalkListener;
+
+/*
+ * Reference: RFC6020 and YANG ANTLR Grammar
+ *
+ * ABNF grammar as per RFC6020
+ * module-stmt = optsep module-keyword sep identifier-arg-str
+ * optsep
+ * "{" stmtsep
+ * module-header-stmts
+ * linkage-stmts
+ * meta-stmts
+ * revision-stmts
+ * body-stmts
+ * "}" optsep
+ *
+ * ANTLR grammar rule
+ * module_stmt : MODULE_KEYWORD IDENTIFIER LEFT_CURLY_BRACE module_body* RIGHT_CURLY_BRACE;
+ */
+
+/**
+ * Implements listener based call back function corresponding to the "module"
+ * rule defined in ANTLR grammar file for corresponding ABNF rule in RFC 6020.
+ */
+public final class ModuleListener {
+
+ /**
+ * Creates a new module listener.
+ */
+ private ModuleListener() {
+ }
+
+ /**
+ * It is called when parser receives an input matching the grammar
+ * rule (module), perform validations and update the data model
+ * tree.
+ *
+ * @param listener Listener's object.
+ * @param ctx context object of the grammar rule.
+ */
+ public static void processModuleEntry(TreeWalkListener listener, GeneratedYangParser.ModuleStatementContext ctx) {
+ // TODO method implementation
+ }
+
+ /**
+ * It is called when parser exits from grammar rule (module), it perform
+ * validations and update the data model tree.
+ *
+ * @param listener Listener's object.
+ * @param ctx context object of the grammar rule.
+ */
+ public static void processModuleExit(TreeWalkListener listener, GeneratedYangParser.ModuleStatementContext ctx) {
+ // TODO method implementation
+ }
+}
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/NamespaceListener.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/NamespaceListener.java
new file mode 100644
index 0000000..6f694e1
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/NamespaceListener.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2016 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.parser.antlrgencode.GeneratedYangParser;
+import org.onosproject.yangutils.parser.impl.TreeWalkListener;
+
+/*
+ * Reference: RFC6020 and YANG ANTLR Grammar
+ *
+ * ABNF grammar as per RFC6020
+ * module-header-stmts = ;; these stmts can appear in any order
+ * [yang-version-stmt stmtsep]
+ * namespace-stmt stmtsep
+ * prefix-stmt stmtsep
+ *
+ * namespace-stmt = namespace-keyword sep uri-str optsep stmtend
+ *
+ * ANTLR grammar rule
+ * module_header_statement : yang_version_stmt? namespace_stmt prefix_stmt
+ * | yang_version_stmt? prefix_stmt namespace_stmt
+ * | namespace_stmt yang_version_stmt? prefix_stmt
+ * | namespace_stmt prefix_stmt yang_version_stmt?
+ * | prefix_stmt namespace_stmt yang_version_stmt?
+ * | prefix_stmt yang_version_stmt? namespace_stmt
+ * ;
+ * namespace_stmt : NAMESPACE_KEYWORD string STMTEND;
+ */
+
+/**
+ * Implements listener based call back function corresponding to the "namespace"
+ * rule defined in ANTLR grammar file for corresponding ABNF rule in RFC 6020.
+ */
+public final class NamespaceListener {
+
+ /**
+ * Creates a new namespace listener.
+ */
+ private NamespaceListener() {
+ }
+
+ /**
+ * It is called when parser receives an input matching the grammar
+ * rule (namespace), perform validations and update the data model
+ * tree.
+ *
+ * @param listener Listener's object.
+ * @param ctx context object of the grammar rule.
+ */
+ public static void processNamespaceEntry(TreeWalkListener listener,
+ GeneratedYangParser.NamespaceStatementContext ctx) {
+ // TODO method implementation
+ }
+}
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/OrganizationListener.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/OrganizationListener.java
new file mode 100644
index 0000000..e81f15f
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/OrganizationListener.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright 2016 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.parser.antlrgencode.GeneratedYangParser;
+import org.onosproject.yangutils.parser.impl.TreeWalkListener;
+
+/*
+ * Reference: RFC6020 and YANG ANTLR Grammar
+ *
+ * ABNF grammar as per RFC6020
+ * meta-stmts = ;; these stmts can appear in any order
+ * [organization-stmt stmtsep]
+ * [contact-stmt stmtsep]
+ * [description-stmt stmtsep]
+ * [reference-stmt stmtsep]
+ * contact-stmt = contact-keyword sep string optsep stmtend
+ *
+ * ANTLR grammar rule
+ * meta_stmts : organization_stmt? contact_stmt? description_stmt? reference_stmt?
+ * | organization_stmt? contact_stmt? reference_stmt? description_stmt?
+ * | organization_stmt? description_stmt? contact_stmt? reference_stmt?
+ * | organization_stmt? description_stmt? reference_stmt? contact_stmt?
+ * | organization_stmt? reference_stmt? contact_stmt? description_stmt?
+ * | organization_stmt? reference_stmt? description_stmt? contact_stmt?
+ * | contact_stmt? organization_stmt? description_stmt? reference_stmt?
+ * | contact_stmt? organization_stmt? reference_stmt? description_stmt?
+ * | contact_stmt? reference_stmt? organization_stmt? description_stmt?
+ * | contact_stmt? reference_stmt? description_stmt? organization_stmt?
+ * | contact_stmt? description_stmt? reference_stmt? organization_stmt?
+ * | contact_stmt? description_stmt? organization_stmt? reference_stmt?
+ * | reference_stmt? contact_stmt? organization_stmt? description_stmt?
+ * | reference_stmt? contact_stmt? description_stmt? organization_stmt?
+ * | reference_stmt? organization_stmt? contact_stmt? description_stmt?
+ * | reference_stmt? organization_stmt? description_stmt? contact_stmt?
+ * | reference_stmt? description_stmt? organization_stmt? contact_stmt?
+ * | reference_stmt? description_stmt? contact_stmt? organization_stmt?
+ * | description_stmt? reference_stmt? contact_stmt? organization_stmt?
+ * | description_stmt? reference_stmt? organization_stmt? contact_stmt?
+ * | description_stmt? contact_stmt? reference_stmt? organization_stmt?
+ * | description_stmt? contact_stmt? organization_stmt? reference_stmt?
+ * | description_stmt? organization_stmt? contact_stmt? reference_stmt?
+ * | description_stmt? organization_stmt? reference_stmt? contact_stmt?
+ * ;
+ * contact_stmt : CONTACT_KEYWORD string STMTEND;
+ */
+
+/**
+ * Implements listener based call back function corresponding to the "organization"
+ * rule defined in ANTLR grammar file for corresponding ABNF rule in RFC 6020.
+ */
+public final class OrganizationListener {
+
+ /**
+ * Creates a new organization listener.
+ */
+ private OrganizationListener() {
+ }
+
+ /**
+ * It is called when parser receives an input matching the grammar
+ * rule (organization), perform validations and update the data model
+ * tree.
+ *
+ * @param listener Listener's object.
+ * @param ctx context object of the grammar rule.
+ */
+ public static void processOrganizationEntry(TreeWalkListener listener,
+ GeneratedYangParser.OrganizationStatementContext ctx) {
+ // TODO method implementation
+ }
+}
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/PrefixListener.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/PrefixListener.java
new file mode 100644
index 0000000..b02d6f4
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/PrefixListener.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2016 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.parser.antlrgencode.GeneratedYangParser;
+import org.onosproject.yangutils.parser.impl.TreeWalkListener;
+
+/*
+ * Reference: RFC6020 and YANG ANTLR Grammar
+ *
+ * ABNF grammar as per RFC6020
+ * module-header-stmts = ;; these stmts can appear in any order
+ * [yang-version-stmt stmtsep]
+ * namespace-stmt stmtsep
+ * prefix-stmt stmtsep
+ *
+ * prefix-stmt = prefix-keyword sep prefix-arg-str
+ * optsep stmtend
+ *
+ * ANTLR grammar rule
+ * module_header_statement : yang_version_stmt? namespace_stmt prefix_stmt
+ * | yang_version_stmt? prefix_stmt namespace_stmt
+ * | namespace_stmt yang_version_stmt? prefix_stmt
+ * | namespace_stmt prefix_stmt yang_version_stmt?
+ * | prefix_stmt namespace_stmt yang_version_stmt?
+ * | prefix_stmt yang_version_stmt? namespace_stmt
+ * ;
+ * prefix_stmt : PREFIX_KEYWORD IDENTIFIER STMTEND;
+ */
+
+/**
+ * Implements listener based call back function corresponding to the "prefix"
+ * rule defined in ANTLR grammar file for corresponding ABNF rule in RFC 6020.
+ */
+public final class PrefixListener {
+
+ /**
+ * Creates a new prefix listener.
+ */
+ private PrefixListener() {
+ }
+
+ /**
+ * It is called when parser receives an input matching the grammar
+ * rule (prefix),perform validations and update the data model
+ * tree.
+ *
+ * @param listener Listener's object.
+ * @param ctx context object of the grammar rule.
+ */
+ public static void processPrefixEntry(TreeWalkListener listener, GeneratedYangParser.PrefixStatementContext ctx) {
+ // TODO method implementation
+ }
+}
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/RevisionDateListener.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/RevisionDateListener.java
new file mode 100644
index 0000000..c3233ef
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/RevisionDateListener.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2016 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.parser.antlrgencode.GeneratedYangParser;
+import org.onosproject.yangutils.parser.impl.TreeWalkListener;
+
+/*
+ * Reference: RFC6020 and YANG ANTLR Grammar
+ *
+ * ABNF grammar as per RFC6020
+ * import-stmt = import-keyword sep identifier-arg-str optsep
+ * "{" stmtsep
+ * prefix-stmt stmtsep
+ * [revision-date-stmt stmtsep]
+ * "}"
+ * include-stmt = include-keyword sep identifier-arg-str optsep
+ * (";" /
+ * "{" stmtsep
+ * [revision-date-stmt stmtsep]
+ * "}")
+ * revision-date-stmt = revision-date-keyword sep revision-date stmtend
+ *
+ * ANTLR grammar rule
+ * import_stmt : IMPORT_KEYWORD IDENTIFIER LEFT_CURLY_BRACE import_stmt_body
+ * RIGHT_CURLY_BRACE;
+ * import_stmt_body : prefix_stmt revision_date_stmt?;
+ *
+ * include_stmt : INCLUDE_KEYWORD IDENTIFIER (STMTEND | LEFT_CURLY_BRACE
+ * revision_date_stmt_body? RIGHT_CURLY_BRACE);
+ *
+ * revision_date_stmt : REVISION_DATE_KEYWORD DATE_ARG STMTEND;
+ *
+ */
+
+/**
+ * Implements listener based call back function corresponding to the "revision date"
+ * rule defined in ANTLR grammar file for corresponding ABNF rule in RFC 6020.
+ */
+public final class RevisionDateListener {
+
+ /**
+ * Creates a new revision date listener.
+ */
+ private RevisionDateListener() {
+ }
+
+ /**
+ * It is called when parser receives an input matching the grammar
+ * rule (revision date),perform validations and update the data model
+ * tree.
+ *
+ * @param listener Listener's object.
+ * @param ctx context object of the grammar rule.
+ */
+ public static void processRevisionDateEntry(TreeWalkListener listener,
+ GeneratedYangParser.RevisionDateStatementContext ctx) {
+ // TODO method implementation
+ }
+}
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/RevisionListener.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/RevisionListener.java
new file mode 100644
index 0000000..c473c83
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/RevisionListener.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright 2016 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.parser.antlrgencode.GeneratedYangParser;
+import org.onosproject.yangutils.parser.impl.TreeWalkListener;
+
+/*
+ * Reference: RFC6020 and YANG ANTLR Grammar
+ *
+ * ABNF grammar as per RFC6020
+ * module-stmt = optsep module-keyword sep identifier-arg-str
+ * optsep
+ * "{" stmtsep
+ * module-header-stmts
+ * linkage-stmts
+ * meta-stmts
+ * revision-stmts
+ * body-stmts
+ * "}" optsep
+ *
+ * revision-stmt = revision-keyword sep revision-date optsep
+ * (";" /
+ * "{" stmtsep
+ * [description-stmt stmtsep]
+ * [reference-stmt stmtsep]
+ * "}")
+ *
+ * ANTLR grammar rule
+ * module_stmt : MODULE_KEYWORD IDENTIFIER LEFT_CURLY_BRACE module_body* RIGHT_CURLY_BRACE;
+ *
+ * revision_stmt : REVISION_KEYWORD DATE_ARG (STMTEND | LEFT_CURLY_BRACE revision_stmt_body RIGHT_CURLY_BRACE);
+ * revision_stmt_body : description_stmt? reference_stmt?;
+ */
+
+/**
+ * Implements listener based call back function corresponding to the "revision"
+ * rule defined in ANTLR grammar file for corresponding ABNF rule in RFC 6020.
+ */
+public final class RevisionListener {
+
+ /**
+ * Creates a new revision listener.
+ */
+ 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
+ }
+
+ /**
+ * It is called when parser exits from grammar rule (revision), it perform
+ * validations and update the data model tree.
+ *
+ * @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
+ }
+}
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/SubModuleListener.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/SubModuleListener.java
new file mode 100644
index 0000000..25f2764
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/SubModuleListener.java
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2016 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.parser.antlrgencode.GeneratedYangParser;
+import org.onosproject.yangutils.parser.impl.TreeWalkListener;
+
+/*
+ * Reference: RFC6020 and YANG ANTLR Grammar
+ *
+ * ABNF grammar as per RFC6020
+ * submodule-stmt = optsep submodule-keyword sep identifier-arg-str
+ * optsep
+ * "{" stmtsep
+ * submodule-header-stmts
+ * linkage-stmts
+ * meta-stmts
+ * revision-stmts
+ * body-stmts
+ * "}" optsep
+ *
+ * ANTLR grammar rule
+ * submodule_stmt : SUBMODULE_KEYWORD IDENTIFIER LEFT_CURLY_BRACE submodule_body* RIGHT_CURLY_BRACE;
+ * submodule_body : submodule_header_statement linkage_stmts meta_stmts revision_stmts body_stmts;
+ */
+
+/**
+ * Implements listener based call back function corresponding to the "submodule"
+ * rule defined in ANTLR grammar file for corresponding ABNF rule in RFC 6020.
+ */
+public final class SubModuleListener {
+
+ /**
+ * Creates a new sub module listener.
+ */
+ private SubModuleListener() {
+ }
+
+ /**
+ * It is called when parser receives an input matching the grammar
+ * rule (sub module), perform validations and update the data model
+ * tree.
+ *
+ * @param listener Listener's object.
+ * @param ctx context object of the grammar rule.
+ */
+ public static void processSubModuleEntry(TreeWalkListener listener,
+ GeneratedYangParser.SubModuleStatementContext ctx) {
+ // TODO method implementation
+ }
+
+ /**
+ * It is called when parser exits from grammar rule (submodule), it perform
+ * validations and update the data model tree.
+ *
+ * @param listener Listener's object.
+ * @param ctx context object of the grammar rule.
+ */
+ public static void processSubModuleExit(TreeWalkListener listener,
+ GeneratedYangParser.SubModuleStatementContext ctx) {
+ // TODO method implementation
+ }
+}
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/VersionListener.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/VersionListener.java
new file mode 100644
index 0000000..02afdcf
--- /dev/null
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/parser/impl/listeners/VersionListener.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2016 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.parser.antlrgencode.GeneratedYangParser;
+import org.onosproject.yangutils.parser.impl.TreeWalkListener;
+
+/*
+ * Reference: RFC6020 and YANG ANTLR Grammar
+ *
+ * ABNF grammar as per RFC6020
+ * module-header-stmts = ;; these stmts can appear in any order
+ * [yang-version-stmt stmtsep]
+ * namespace-stmt stmtsep
+ * prefix-stmt stmtsep
+ *
+ * submodule-header-stmts =
+ * ;; these stmts can appear in any order
+ * [yang-version-stmt stmtsep]
+ * belongs-to-stmt stmtsep
+ *
+ * yang-version-stmt = yang-version-keyword sep yang-version-arg-str
+ * optsep stmtend
+ *
+ *
+ * ANTLR grammar rule
+ * module_header_statement : yang_version_stmt? namespace_stmt prefix_stmt
+ * | yang_version_stmt? prefix_stmt namespace_stmt
+ * | namespace_stmt yang_version_stmt? prefix_stmt
+ * | namespace_stmt prefix_stmt yang_version_stmt?
+ * | prefix_stmt namespace_stmt yang_version_stmt?
+ * | prefix_stmt yang_version_stmt? namespace_stmt?
+ * ;
+ * submodule_header_statement : yang_version_stmt? belongs_to_stmt
+ * | belongs_to_stmt yang_version_stmt?
+ * ;
+ * yang_version_stmt : YANG_VERSION_KEYWORD INTEGER STMTEND;
+ */
+
+/**
+ * Implements listener based call back function corresponding to the "version"
+ * rule defined in ANTLR grammar file for corresponding ABNF rule in RFC 6020.
+ */
+public final class VersionListener {
+
+ /**
+ * Creates a new version listener.
+ */
+ private VersionListener() {
+ }
+
+ /**
+ * It is called when parser receives an input matching the grammar
+ * rule (version), perform validations and update the data model
+ * tree.
+ *
+ * @param listener Listener's object.
+ * @param ctx context object of the grammar rule.
+ */
+ public static void processVersionEntry(TreeWalkListener listener,
+ GeneratedYangParser.YangVersionStatementContext ctx) {
+ // TODO method implementation
+ }
+}