File 0001-MANTLR-34-Fix-NPE-when-building-Jenkins.patch of Package antlr-maven-plugin

From 1305d8d7aa5f9724e28d54a112a524f9a2fb0af7 Mon Sep 17 00:00:00 2001
From: Michal Srb <msrb@redhat.com>
Date: Wed, 16 Oct 2013 14:29:21 +0200
Subject: [PATCH] [MANTLR-34] Fix NPE when building Jenkins

---
 .../mojo/antlr/metadata/MetadataExtracter.java     | 40 ++++++++++++----------
 1 file changed, 21 insertions(+), 19 deletions(-)

diff --git a/src/main/java/org/codehaus/mojo/antlr/metadata/MetadataExtracter.java b/src/main/java/org/codehaus/mojo/antlr/metadata/MetadataExtracter.java
index c54f301..8637dea 100644
--- a/src/main/java/org/codehaus/mojo/antlr/metadata/MetadataExtracter.java
+++ b/src/main/java/org/codehaus/mojo/antlr/metadata/MetadataExtracter.java
@@ -239,34 +239,36 @@ public class MetadataExtracter
             Method getRHSMethod = helper.getAntlrOptionClass().getMethod( "getRHS", Helper.NO_ARG_SIGNATURE );
             getRHSMethod.setAccessible( true );
 
-            Object importVocabOption = getElementMethod.invoke( options, new Object[] { "importVocab" } );
-            if ( importVocabOption != null )
-            {
-                String importVocab = (String) getRHSMethod.invoke( importVocabOption, Helper.NO_ARGS );
-                if ( importVocab != null )
+            if ( options != null ) {
+                Object importVocabOption = getElementMethod.invoke( options, new Object[] { "importVocab" } );
+                if ( importVocabOption != null )
                 {
-                    importVocab = importVocab.trim();
-                    if ( importVocab.endsWith( ";" ) )
+                    String importVocab = (String) getRHSMethod.invoke( importVocabOption, Helper.NO_ARGS );
+                    if ( importVocab != null )
                     {
-                        importVocab = importVocab.substring( 0, importVocab.length() - 1 );
+                        importVocab = importVocab.trim();
+                        if ( importVocab.endsWith( ";" ) )
+                        {
+                            importVocab = importVocab.substring( 0, importVocab.length() - 1 );
+                        }
+                        grammar.setImportVocab( importVocab );
                     }
-                    grammar.setImportVocab( importVocab );
                 }
-            }
 
-            Object exportVocabOption = getElementMethod.invoke( options, new Object[] { "exportVocab" } );
-            if ( exportVocabOption != null )
-            {
-                String exportVocab = (String) getRHSMethod.invoke( exportVocabOption, Helper.NO_ARGS );
-                if ( exportVocab != null )
+                Object exportVocabOption = getElementMethod.invoke( options, new Object[] { "exportVocab" } );
+                if ( exportVocabOption != null )
                 {
-                    exportVocab = exportVocab.trim();
-                    if ( exportVocab.endsWith( ";" ) )
+                    String exportVocab = (String) getRHSMethod.invoke( exportVocabOption, Helper.NO_ARGS );
+                    if ( exportVocab != null )
                     {
-                        exportVocab = exportVocab.substring( 0, exportVocab.length() - 1 );
+                        exportVocab = exportVocab.trim();
+                        if ( exportVocab.endsWith( ";" ) )
+                        {
+                            exportVocab = exportVocab.substring( 0, exportVocab.length() - 1 );
+                        }
                     }
+                    grammar.setExportVocab( exportVocab );
                 }
-                grammar.setExportVocab( exportVocab );
             }
         }
         catch ( Throwable t )
-- 
1.8.3.1