Remove variable wrapper

This is a concept from citeproc.js. If necessary, we will provide
a new interface for that purpose in citeproc-java

buildSrc/src/main/groovy/SourceGenerator.groovy

@@ -184,7 +184,6 @@ class SourceGenerator {
         def dst = new File(project.projectDir, 'src-gen/main/java')
         dst.mkdirs()
 
-        renderTemplatesInternal('Context', dst, true)
         renderTemplatesInternal('CSLType', dst, true)
         renderTemplatesInternal('CSLLabel', dst, true)
         renderTemplatesInternal('SecondFieldAlign', dst, true)
@@ -205,8 +204,6 @@ class SourceGenerator {
         renderTemplatesInternal('Bibliography', dst)
         renderTemplatesInternal('Citation', dst)
 
-        renderTemplatesInternal('VariableWrapperParams', dst)
-
         renderParserTemplate('EndNoteParser', dst)
         renderParserTemplate('RISParser', dst)
     }

citeproc-java/src/main/java/de/undercouch/citeproc/CSL.java

@@ -159,7 +159,7 @@ public class CSL {
      */
     public CSL(ItemDataProvider itemDataProvider, String style) throws IOException {
         this(itemDataProvider, new DefaultLocaleProvider(),
-                new DefaultAbbreviationProvider(), null, style, "en-US");
+                new DefaultAbbreviationProvider(), style, "en-US");
     }
 
     /**
@@ -174,16 +174,14 @@ public CSL(ItemDataProvider itemDataProvider, String style) throws IOException {
      */
     public CSL(ItemDataProvider itemDataProvider, String style, String lang) throws IOException {
         this(itemDataProvider, new DefaultLocaleProvider(),
-                new DefaultAbbreviationProvider(), null, style, lang);
+                new DefaultAbbreviationProvider(), style, lang);
     }
 
     /**
      * Constructs a new citation processor
      * @param itemDataProvider an object that provides citation item data
      * @param localeProvider an object that provides CSL locales
      * @param abbreviationProvider an object that provides abbreviations
-     * @param variableWrapper an optional object that can affect how items
-     * are rendered in citations and bibliographies
      * @param style the citation style to use. May either be a serialized
      * XML representation of the style or a style's name such as <code>ieee</code>.
      * In the latter case, the processor loads the style from the classpath (e.g.
@@ -192,8 +190,8 @@ public CSL(ItemDataProvider itemDataProvider, String style, String lang) throws
      * @throws IOException if the CSL style could not be loaded
      */
     public CSL(ItemDataProvider itemDataProvider, LocaleProvider localeProvider,
-            AbbreviationProvider abbreviationProvider, VariableWrapper variableWrapper,
-            String style, String lang) throws IOException {
+            AbbreviationProvider abbreviationProvider, String style,
+            String lang) throws IOException {
         // load style if needed
         if (!isStyle(style)) {
             style = loadStyle(style);

citeproc-java/src/main/java/de/undercouch/citeproc/CSLBuilder.java

@@ -16,7 +16,6 @@ public class CSLBuilder {
     private ItemDataProvider itemDataProvider;
     private LocaleProvider localeProvider = new DefaultLocaleProvider();
     private AbbreviationProvider abbreviationProvider = new DefaultAbbreviationProvider();
-    private VariableWrapper variableWrapper;
     private String style;
     private String lang = "en-US";
 
@@ -50,16 +49,6 @@ public CSLBuilder abbreviationProvider(AbbreviationProvider abbreviationProvider
         return this;
     }
 
-    /**
-     * Set an optional variable wrapper
-     * @param variableWrapper an object that decorates rendered items
-     * @return {@code this} builder
-     */
-    public CSLBuilder variableWrapper(VariableWrapper variableWrapper) {
-        this.variableWrapper = variableWrapper;
-        return this;
-    }
-
     /**
      * Set the citation style to use. This may either be a serialized XML
      * representation of the style or a style's name such as <code>ieee</code>.
@@ -89,7 +78,6 @@ public CSLBuilder lang(String lang) {
      * @throws IOException if the CSL style could not be loaded
      */
     public CSL build() throws IOException {
-        return new CSL(itemDataProvider, localeProvider, abbreviationProvider,
-                variableWrapper, style, lang);
+        return new CSL(itemDataProvider, localeProvider, abbreviationProvider, style, lang);
     }
 }

citeproc-java/src/test/java/de/undercouch/citeproc/CSLTest.java

@@ -394,32 +394,6 @@ public void abbreviations() throws Exception {
         assertEquals("Johnson and Kernighan, \u201cB.\u201d", a.get(0).getText());
     }
 
-    /**
-     * Tests if output can be decorated
-     * @throws Exception if something goes wrong
-     */
-    @Test
-    public void variableWrapper() throws Exception {
-        VariableWrapper wrapper = (params, prePunct, str, postPunct) -> {
-            if (params.getContext() == Context.CITATION &&
-                    Arrays.asList(params.getVariableNames()).contains("author")) {
-                return prePunct + "<strong>" + str + "</strong>" + postPunct;
-            }
-            return prePunct + str + postPunct;
-        };
-
-        CSL citeproc = new CSLBuilder()
-                .itemDataProvider(new ListItemDataProvider(items))
-                .variableWrapper(wrapper)
-                .style("chicago-note-bibliography")
-                .build();
-        List<Citation> a = citeproc.makeCitation(items[0].getId());
-        assertEquals(0, a.get(0).getIndex());
-        assertEquals("<strong>Johnson and Kernighan</strong>, "
-                        + "\u201cThe Programming Language B.\u201d",
-                a.get(0).getText());
-    }
-
     /**
      * Tests if citation items can be registered unsorted
      * @throws Exception if something goes wrong