[ONOS-5096][ONOS-5104] Checkstyle issues fixed for generated code.

Change-Id: I6a0984c2b397dbeda912e75138d5ad9e7adf33d5
diff --git a/plugin/src/main/java/org/onosproject/yangutils/parser/exceptions/ParserException.java b/plugin/src/main/java/org/onosproject/yangutils/parser/exceptions/ParserException.java
index 6a18b54..e030f6c 100644
--- a/plugin/src/main/java/org/onosproject/yangutils/parser/exceptions/ParserException.java
+++ b/plugin/src/main/java/org/onosproject/yangutils/parser/exceptions/ParserException.java
@@ -46,7 +46,7 @@
      * Creates a new parser exception from given message and cause.
      *
      * @param message the detail of exception in string
-     * @param cause underlying cause of the error
+     * @param cause   underlying cause of the error
      */
     public ParserException(final String message, final Throwable cause) {
         super(message, cause);
@@ -114,4 +114,5 @@
     public void setFileName(String fileName) {
         this.fileName = fileName;
     }
+
 }
diff --git a/plugin/src/main/java/org/onosproject/yangutils/parser/impl/TreeWalkListener.java b/plugin/src/main/java/org/onosproject/yangutils/parser/impl/TreeWalkListener.java
index 116f06d..9c5745d 100644
--- a/plugin/src/main/java/org/onosproject/yangutils/parser/impl/TreeWalkListener.java
+++ b/plugin/src/main/java/org/onosproject/yangutils/parser/impl/TreeWalkListener.java
@@ -16,6 +16,8 @@
 
 package org.onosproject.yangutils.parser.impl;
 
+import java.util.Stack;
+
 import org.antlr.v4.runtime.ParserRuleContext;
 import org.antlr.v4.runtime.tree.ErrorNode;
 import org.antlr.v4.runtime.tree.TerminalNode;
@@ -96,8 +98,6 @@
 import org.onosproject.yangutils.parser.impl.listeners.VersionListener;
 import org.onosproject.yangutils.parser.impl.listeners.WhenListener;
 
-import java.util.Stack;
-
 import static org.onosproject.yangutils.parser.impl.parserutils.ListenerUtil.handleUnsupportedYangConstruct;
 import static org.onosproject.yangutils.utils.UtilConstants.CURRENTLY_UNSUPPORTED;
 import static org.onosproject.yangutils.utils.UtilConstants.UNSUPPORTED_YANG_CONSTRUCT;
@@ -116,6 +116,9 @@
     // Parse tree root node
     private YangNode rootNode;
 
+    // YANG file name.
+    private String fileName;
+
     /**
      * Parent depth of grouping count for any node.
      */
@@ -163,6 +166,24 @@
     }
 
     /**
+     * Returns YANG file name.
+     *
+     * @return YANG file name
+     */
+    public String getFileName() {
+        return fileName;
+    }
+
+    /**
+     * Sets YANG file name.
+     *
+     * @param fileName YANG file name
+     */
+    public void setFileName(String fileName) {
+        this.fileName = fileName;
+    }
+
+    /**
      * Set parsed data stack.
      *
      * @param parsedDataStack stack of parsable data objects
@@ -862,7 +883,7 @@
 
     @Override
     public void enterOrderedByStatement(GeneratedYangParser.OrderedByStatementContext ctx) {
-        handleUnsupportedYangConstruct(YangConstructType.ORDERED_BY_DATA, ctx, CURRENTLY_UNSUPPORTED);
+        handleUnsupportedYangConstruct(YangConstructType.ORDERED_BY_DATA, ctx, CURRENTLY_UNSUPPORTED, getFileName());
     }
 
     @Override
@@ -1032,7 +1053,7 @@
 
     @Override
     public void enterAnyxmlStatement(GeneratedYangParser.AnyxmlStatementContext ctx) {
-        handleUnsupportedYangConstruct(YangConstructType.ANYXML_DATA, ctx, UNSUPPORTED_YANG_CONSTRUCT);
+        handleUnsupportedYangConstruct(YangConstructType.ANYXML_DATA, ctx, UNSUPPORTED_YANG_CONSTRUCT, getFileName());
     }
 
     @Override
@@ -1052,7 +1073,7 @@
 
     @Override
     public void enterRefineStatement(GeneratedYangParser.RefineStatementContext ctx) {
-        handleUnsupportedYangConstruct(YangConstructType.REFINE_DATA, ctx, UNSUPPORTED_YANG_CONSTRUCT);
+        handleUnsupportedYangConstruct(YangConstructType.REFINE_DATA, ctx, UNSUPPORTED_YANG_CONSTRUCT, getFileName());
     }
 
     @Override
@@ -1192,7 +1213,8 @@
 
     @Override
     public void enterDeviationStatement(GeneratedYangParser.DeviationStatementContext ctx) {
-        handleUnsupportedYangConstruct(YangConstructType.DEVIATION_DATA, ctx, UNSUPPORTED_YANG_CONSTRUCT);
+        handleUnsupportedYangConstruct(YangConstructType.DEVIATION_DATA, ctx, UNSUPPORTED_YANG_CONSTRUCT,
+                getFileName());
     }
 
     @Override
diff --git a/plugin/src/main/java/org/onosproject/yangutils/parser/impl/YangUtilsParserManager.java b/plugin/src/main/java/org/onosproject/yangutils/parser/impl/YangUtilsParserManager.java
index b04f617..c8b7804 100644
--- a/plugin/src/main/java/org/onosproject/yangutils/parser/impl/YangUtilsParserManager.java
+++ b/plugin/src/main/java/org/onosproject/yangutils/parser/impl/YangUtilsParserManager.java
@@ -83,7 +83,7 @@
 
         // Create a listener implementation class object.
         TreeWalkListener treeWalker = new TreeWalkListener();
-
+        treeWalker.setFileName(yangFile);
         /**
          * Walk parse tree, provide call backs to methods in listener and build
          * data model tree.
diff --git a/plugin/src/main/java/org/onosproject/yangutils/parser/impl/parserutils/ListenerUtil.java b/plugin/src/main/java/org/onosproject/yangutils/parser/impl/parserutils/ListenerUtil.java
index 5fe0970..f580da9 100644
--- a/plugin/src/main/java/org/onosproject/yangutils/parser/impl/parserutils/ListenerUtil.java
+++ b/plugin/src/main/java/org/onosproject/yangutils/parser/impl/parserutils/ListenerUtil.java
@@ -16,7 +16,19 @@
 
 package org.onosproject.yangutils.parser.impl.parserutils;
 
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.regex.Pattern;
+
 import org.antlr.v4.runtime.ParserRuleContext;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
 import org.onosproject.yangutils.datamodel.YangAtomicPath;
 import org.onosproject.yangutils.datamodel.YangImport;
 import org.onosproject.yangutils.datamodel.YangLeaf;
@@ -34,19 +46,10 @@
 import org.onosproject.yangutils.parser.antlrgencode.GeneratedYangParser;
 import org.onosproject.yangutils.parser.exceptions.ParserException;
 
-import java.text.ParseException;
-import java.text.SimpleDateFormat;
-import java.util.ArrayList;
-import java.util.Date;
-import java.util.HashMap;
-import java.util.Iterator;
-import java.util.LinkedList;
-import java.util.List;
-import java.util.regex.Pattern;
-
 import static org.onosproject.yangutils.datamodel.YangPathArgType.ABSOLUTE_PATH;
 import static org.onosproject.yangutils.datamodel.YangPathArgType.RELATIVE_PATH;
 import static org.onosproject.yangutils.datamodel.YangPathOperator.EQUALTO;
+import static org.onosproject.yangutils.datamodel.utils.YangConstructType.getYangConstructType;
 import static org.onosproject.yangutils.utils.UtilConstants.ADD;
 import static org.onosproject.yangutils.utils.UtilConstants.ANCESTOR_ACCESSOR;
 import static org.onosproject.yangutils.utils.UtilConstants.ANCESTOR_ACCESSOR_IN_PATH;
@@ -80,6 +83,7 @@
     private static final String ONE = "1";
     private static final int IDENTIFIER_LENGTH = 64;
     private static final String DATE_FORMAT = "yyyy-MM-dd";
+    private static final Log log = LogFactory.getLog(ListenerUtil.class);
 
     /**
      * Creates a new listener util.
@@ -119,15 +123,15 @@
 
         if (identifierString.length() > IDENTIFIER_LENGTH) {
             parserException = new ParserException("YANG file error : " +
-                    YangConstructType.getYangConstructType(yangConstruct) + " name " + identifierString + " is " +
+                    getYangConstructType(yangConstruct) + " name " + identifierString + " is " +
                     "greater than 64 characters.");
         } else if (!IDENTIFIER_PATTERN.matcher(identifierString).matches()) {
             parserException = new ParserException("YANG file error : " +
-                    YangConstructType.getYangConstructType(yangConstruct) + " name " + identifierString + " is not " +
+                    getYangConstructType(yangConstruct) + " name " + identifierString + " is not " +
                     "valid.");
         } else if (identifierString.toLowerCase().startsWith(XML)) {
             parserException = new ParserException("YANG file error : " +
-                    YangConstructType.getYangConstructType(yangConstruct) + " identifier " + identifierString +
+                    getYangConstructType(yangConstruct) + " identifier " + identifierString +
                     " must not start with (('X'|'x') ('M'|'m') ('L'|'l')).");
         } else {
             return identifierString;
@@ -155,15 +159,15 @@
 
         if (identifierString.length() > IDENTIFIER_LENGTH) {
             parserException = new ParserException("YANG file error : " + " identifier " + identifierString + " in " +
-                    YangConstructType.getYangConstructType(yangConstruct) + " " + yangLeafRef.getPath() + " is " +
+                    getYangConstructType(yangConstruct) + " " + yangLeafRef.getPath() + " is " +
                     "greater than 64 characters.");
         } else if (!IDENTIFIER_PATTERN.matcher(identifierString).matches()) {
             parserException = new ParserException("YANG file error : " + " identifier " + identifierString + " in " +
-                    YangConstructType.getYangConstructType(yangConstruct) + " " + yangLeafRef.getPath() + " is not " +
+                    getYangConstructType(yangConstruct) + " " + yangLeafRef.getPath() + " is not " +
                     "valid.");
         } else if (identifierString.toLowerCase().startsWith(XML)) {
             parserException = new ParserException("YANG file error : " + " identifier " + identifierString + " in " +
-                    YangConstructType.getYangConstructType(yangConstruct) + " " + yangLeafRef.getPath() +
+                    getYangConstructType(yangConstruct) + " " + yangLeafRef.getPath() +
                     " must not start with (('X'|'x') ('M'|'m') ('L'|'l')).");
         } else {
             return identifierString;
@@ -231,7 +235,7 @@
         String value = removeQuotesAndHandleConcat(integerValue);
         if (!value.matches(NON_NEGATIVE_INTEGER_PATTERN)) {
             ParserException parserException = new ParserException("YANG file error : " +
-                    YangConstructType.getYangConstructType(yangConstruct) + " value " + value + " is not " +
+                    getYangConstructType(yangConstruct) + " value " + value + " is not " +
                     "valid.");
             parserException.setLine(ctx.getStart().getLine());
             parserException.setCharPosition(ctx.getStart().getCharPositionInLine());
@@ -243,7 +247,7 @@
             valueInInteger = Integer.parseInt(value);
         } catch (NumberFormatException e) {
             ParserException parserException = new ParserException("YANG file error : " +
-                    YangConstructType.getYangConstructType(yangConstruct) + " value " + value + " is not " +
+                    getYangConstructType(yangConstruct) + " value " + value + " is not " +
                     "valid.");
             parserException.setLine(ctx.getStart().getLine());
             parserException.setCharPosition(ctx.getStart().getCharPositionInLine());
@@ -266,7 +270,7 @@
         String value = removeQuotesAndHandleConcat(integerValue);
         if (!INTEGER_PATTERN.matcher(value).matches()) {
             ParserException parserException = new ParserException("YANG file error : " +
-                    YangConstructType.getYangConstructType(yangConstruct) + " value " + value + " is not " +
+                    getYangConstructType(yangConstruct) + " value " + value + " is not " +
                     "valid.");
             parserException.setLine(ctx.getStart().getLine());
             parserException.setCharPosition(ctx.getStart().getCharPositionInLine());
@@ -278,7 +282,7 @@
             valueInInteger = Integer.parseInt(value);
         } catch (NumberFormatException e) {
             ParserException parserException = new ParserException("YANG file error : " +
-                    YangConstructType.getYangConstructType(yangConstruct) + " value " + value + " is not " +
+                    getYangConstructType(yangConstruct) + " value " + value + " is not " +
                     "valid.");
             parserException.setLine(ctx.getStart().getLine());
             parserException.setCharPosition(ctx.getStart().getCharPositionInLine());
@@ -305,7 +309,7 @@
             return false;
         } else {
             ParserException parserException = new ParserException("YANG file error : " +
-                    YangConstructType.getYangConstructType(yangConstruct) + " value " + value + " is not " +
+                    getYangConstructType(yangConstruct) + " value " + value + " is not " +
                     "valid.");
             parserException.setLine(ctx.getStart().getLine());
             parserException.setCharPosition(ctx.getStart().getCharPositionInLine());
@@ -357,7 +361,7 @@
             return nodeIdentifier;
         } else {
             ParserException parserException = new ParserException("YANG file error : " +
-                    YangConstructType.getYangConstructType(yangConstruct) + " name " + nodeIdentifierString +
+                    getYangConstructType(yangConstruct) + " name " + nodeIdentifierString +
                     " is not valid.");
             parserException.setLine(ctx.getStart().getLine());
             parserException.setCharPosition(ctx.getStart().getCharPositionInLine());
@@ -391,7 +395,7 @@
             return nodeIdentifier;
         } else {
             ParserException parserException = new ParserException("YANG file error : " +
-                    YangConstructType.getYangConstructType(yangConstruct) + yangLeafRef.getPath() +
+                    getYangConstructType(yangConstruct) + yangLeafRef.getPath() +
                     " is not valid.");
             parserException.setLine(ctx.getStart().getLine());
             parserException.setCharPosition(ctx.getStart().getCharPositionInLine());
@@ -423,7 +427,7 @@
             validateRelativePath(completePathString, yangConstruct, ctx, yangLeafRef);
         } else {
             ParserException parserException = new ParserException("YANG file error : " +
-                    YangConstructType.getYangConstructType(yangConstruct) + yangLeafRef.getPath() +
+                    getYangConstructType(yangConstruct) + yangLeafRef.getPath() +
                     " does not follow valid path syntax");
             parserException.setLine(ctx.getStart().getLine());
             parserException.setCharPosition(ctx.getStart().getCharPositionInLine());
@@ -435,7 +439,7 @@
      * Validates the prefixes in the leafref and assigns them to the respective imported name in map.
      *
      * @param yangAtomicPathList list of atomic poth
-     * @param yangLeafRef      instance YANG leafref
+     * @param yangLeafRef        instance YANG leafref
      */
     private static void validatePrefixAndYangNode(List<YangAtomicPath> yangAtomicPathList, YangLeafRef yangLeafRef) {
         Iterator<YangAtomicPath> yangAtomicPathIterator = yangAtomicPathList.listIterator();
@@ -508,7 +512,7 @@
      * @return list of absolute path
      */
     private static List<YangAtomicPath> validateUniqueValues(String uniquePath, String prefixOfFile,
-                                                               ParserRuleContext ctx) {
+                                                             ParserRuleContext ctx) {
         List<YangAtomicPath> atomicPath = new LinkedList<>();
         String[] pathInUnique = uniquePath.split(SLASH_FOR_STRING);
         for (String uniqueValue : pathInUnique) {
@@ -674,7 +678,7 @@
         }
         if (completePathString == null || completePathString.length() == 0) {
             ParserException parserException = new ParserException("YANG file error : "
-                    + YangConstructType.getYangConstructType(yangConstruct) + yangLeafRef.getPath() +
+                    + getYangConstructType(yangConstruct) + yangLeafRef.getPath() +
                     " does not follow valid path syntax");
             parserException.setLine(ctx.getStart().getLine());
             parserException.setCharPosition(ctx.getStart().getCharPositionInLine());
@@ -699,8 +703,8 @@
      * @return list of object of node in absolute path
      */
     private static List<YangAtomicPath> validateAbsolutePath(String completePathString,
-                                                               YangConstructType yangConstruct, ParserRuleContext
-                                                                       ctx, YangLeafRef yangLeafRef) {
+                                                             YangConstructType yangConstruct, ParserRuleContext
+                                                                     ctx, YangLeafRef yangLeafRef) {
 
         List<YangAtomicPath> absolutePathList = new LinkedList<>();
         YangPathPredicate yangPathPredicate = new YangPathPredicate();
@@ -710,7 +714,7 @@
             String path = completePathString.replaceFirst(SLASH_FOR_STRING, EMPTY_STRING);
             if (path == null || path.length() == 0) {
                 ParserException parserException = new ParserException("YANG file error : "
-                        + YangConstructType.getYangConstructType(yangConstruct) + " " + yangLeafRef.getPath() +
+                        + getYangConstructType(yangConstruct) + " " + yangLeafRef.getPath() +
                         " does not follow valid path syntax");
                 parserException.setLine(ctx.getStart().getLine());
                 parserException.setCharPosition(ctx.getStart().getCharPositionInLine());
@@ -729,7 +733,7 @@
 
                 if (matchedPathPredicate == null || matchedPathPredicate.length() == 0) {
                     ParserException parserException = new ParserException("YANG file error : "
-                            + YangConstructType.getYangConstructType(yangConstruct) + " " + yangLeafRef.getPath() +
+                            + getYangConstructType(yangConstruct) + " " + yangLeafRef.getPath() +
                             " does not follow valid path syntax");
                     parserException.setLine(ctx.getStart().getLine());
                     parserException.setCharPosition(ctx.getStart().getCharPositionInLine());
@@ -746,7 +750,7 @@
                         matchedPathPredicate = matchForPathPredicate(differentiate[1]);
                         if (matchedPathPredicate == null || matchedPathPredicate.length() == 0) {
                             ParserException parserException = new ParserException(
-                                    "YANG file error : " + YangConstructType.getYangConstructType(yangConstruct) + " "
+                                    "YANG file error : " + getYangConstructType(yangConstruct) + " "
                                             + yangLeafRef.getPath() +
                                             " does not follow valid path syntax");
                             parserException.setLine(ctx.getStart().getLine());
@@ -897,9 +901,9 @@
      * @return list of object of absolute path nodes present in the relative path
      */
     private static List<YangAtomicPath> validateRelativePathKeyExpression(List<String> rightAbsolutePath,
-                                                                            YangConstructType yangConstruct,
-                                                                            ParserRuleContext ctx, YangLeafRef
-                                                                                    yangLeafRef) {
+                                                                          YangConstructType yangConstruct,
+                                                                          ParserRuleContext ctx, YangLeafRef
+                                                                                  yangLeafRef) {
 
         List<YangAtomicPath> atomicPathList = new ArrayList<>();
         YangNodeIdentifier yangNodeIdentifier;
@@ -911,7 +915,7 @@
 
         if (!(currentFunction[0].trim().equals(CURRENT)) || !(currentFunction[1].trim().equals(CLOSE_PARENTHESIS))) {
             ParserException parserException = new ParserException("YANG file error : "
-                    + YangConstructType.getYangConstructType(yangConstruct) + " " + yangLeafRef.getPath() +
+                    + getYangConstructType(yangConstruct) + " " + yangLeafRef.getPath() +
                     " does not follow valid path syntax");
             parserException.setLine(ctx.getStart().getLine());
             parserException.setCharPosition(ctx.getStart().getCharPositionInLine());
@@ -953,8 +957,8 @@
      * @return target nodes list of absolute schema node id
      */
     public static List<YangAtomicPath> getValidAbsoluteSchemaNodeId(String argumentString,
-                                                                      YangConstructType yangConstructType,
-                                                                      ParserRuleContext ctx) {
+                                                                    YangConstructType yangConstructType,
+                                                                    ParserRuleContext ctx) {
 
         List<YangAtomicPath> targetNodes = new ArrayList<>();
         YangNodeIdentifier yangNodeIdentifier;
@@ -963,7 +967,7 @@
         // absolute-schema-nodeid = 1*("/" node-identifier)
         if (!tmpSchemaNodeId.startsWith(SLASH)) {
             ParserException parserException = new ParserException("YANG file error : " +
-                    YangConstructType.getYangConstructType(yangConstructType) + " name " + argumentString +
+                    getYangConstructType(yangConstructType) + " name " + argumentString +
                     "is not valid");
             parserException.setLine(ctx.getStart().getLine());
             parserException.setCharPosition(ctx.getStart().getCharPositionInLine());
@@ -985,15 +989,17 @@
      * @param yangConstructType yang construct for creating error message
      * @param ctx               yang construct's context to get the line number and character position
      * @param errorInfo         error information
+     * @param fileName          YANG file name
      */
     public static void handleUnsupportedYangConstruct(YangConstructType yangConstructType,
-                                                      ParserRuleContext ctx, String errorInfo) {
+                                                      ParserRuleContext ctx, String errorInfo, String fileName) {
         ParserException parserException = new ParserException(YANG_FILE_ERROR
-                + QUOTES + YangConstructType.getYangConstructType(yangConstructType) + QUOTES
+                + QUOTES + getYangConstructType(yangConstructType) + QUOTES
                 + errorInfo);
         parserException.setLine(ctx.getStart().getLine());
         parserException.setCharPosition(ctx.getStart().getCharPositionInLine());
-        throw parserException;
+        log.info(parserException.getMessage() + " at position " + parserException.getCharPositionInLine() +
+                " in line " + parserException.getLineNumber() + " of yang file " + fileName);
     }
 
     /**
@@ -1043,7 +1049,7 @@
             return tmpData[0];
         } else {
             ParserException parserException = new ParserException("YANG file error : " +
-                    YangConstructType.getYangConstructType(yangConstruct) + " name " + inputString +
+                    getYangConstructType(yangConstruct) + " name " + inputString +
                     " is not valid.");
             parserException.setLine(ctx.getStart().getLine());
             parserException.setCharPosition(ctx.getStart().getCharPositionInLine());