[core] Rename Tokenizer to CpdLexer

See #4065

pmd-groovy/src/main/java/net/sourceforge/pmd/lang/groovy/GroovyLanguageModule.java

@@ -4,10 +4,10 @@
 
 package net.sourceforge.pmd.lang.groovy;
 
-import net.sourceforge.pmd.cpd.Tokenizer;
+import net.sourceforge.pmd.cpd.CpdLexer;
 import net.sourceforge.pmd.lang.LanguagePropertyBundle;
 import net.sourceforge.pmd.lang.LanguageRegistry;
-import net.sourceforge.pmd.lang.groovy.cpd.GroovyTokenizer;
+import net.sourceforge.pmd.lang.groovy.cpd.GroovyCpdLexer;
 import net.sourceforge.pmd.lang.impl.CpdOnlyLanguageModuleBase;
 
 /**
@@ -28,7 +28,7 @@ public class GroovyLanguageModule extends CpdOnlyLanguageModuleBase {
     }
 
     @Override
-    public Tokenizer createCpdTokenizer(LanguagePropertyBundle bundle) {
-        return new GroovyTokenizer();
+    public CpdLexer createCpdLexer(LanguagePropertyBundle bundle) {
+        return new GroovyCpdLexer();
     }
 }

pmd-groovy/src/main/java/net/sourceforge/pmd/lang/groovy/cpd/GroovyCpdLexer.java

@@ -8,7 +8,7 @@ import java.io.IOException;
 
 import org.apache.groovy.parser.antlr4.GroovyLexer;
 
-import net.sourceforge.pmd.cpd.impl.TokenizerBase;
+import net.sourceforge.pmd.cpd.impl.CpdLexerBase;
 import net.sourceforge.pmd.lang.TokenManager;
 import net.sourceforge.pmd.lang.document.TextDocument;
 import net.sourceforge.pmd.lang.groovy.ast.impl.antlr4.GroovyToken;
@@ -19,8 +19,10 @@ import groovyjarjarantlr4.v4.runtime.CharStreams;
 
 /**
  * The Groovy Tokenizer
+ *
+ * <p>Note: This class has been called GroovyTokenizer in PMD 6</p>.
  */
-public class GroovyTokenizer extends TokenizerBase<GroovyToken> {
+public class GroovyCpdLexer extends CpdLexerBase<GroovyToken> {
 
     @Override
     protected final TokenManager<GroovyToken> makeLexerImpl(TextDocument doc) throws IOException {

pmd-groovy/src/test/java/net/sourceforge/pmd/lang/groovy/cpd/GroovyCpdLexerTest.java

@@ -8,9 +8,9 @@ import org.junit.jupiter.api.Test;
 
 import net.sourceforge.pmd.cpd.test.CpdTextComparisonTest;
 
-class GroovyTokenizerTest extends CpdTextComparisonTest {
+class GroovyCpdLexerTest extends CpdTextComparisonTest {
 
-    GroovyTokenizerTest() {
+    GroovyCpdLexerTest() {
         super("groovy", ".groovy");
     }