Groovy: fix parsing method invocations with method names starting with class (#7496)

Author: greg-at-moderne

rewrite-groovy/src/main/java/org/openrewrite/groovy/GroovyParserVisitor.java

@@ -1110,9 +1110,12 @@ public void visitClassExpression(ClassExpression clazz) {
                 }
             }
             if (sourceStartsWith(".class")) {
-                String classSuffix = source.substring(cursor, indexOfNextNonWhitespace(cursor, source)) + ".class";
-                name += classSuffix;
-                skip(classSuffix);
+                int afterClass = indexOfNextNonWhitespace(cursor, source) + ".class".length();
+                if (afterClass >= source.length() || !Character.isJavaIdentifierPart(source.charAt(afterClass))) {
+                    String classSuffix = source.substring(cursor, indexOfNextNonWhitespace(cursor, source)) + ".class";
+                    name += classSuffix;
+                    skip(classSuffix);
+                }
             }
             queue.add(TypeTree.build(name)
                     .withType(typeMapping.type(type))

rewrite-groovy/src/test/java/org/openrewrite/groovy/tree/MethodInvocationTest.java

@@ -760,4 +760,15 @@ static <T> boolean compare(T t1, T t2) {
           )
         );
     }
+
+    @Test
+    void methodNameStartingWithClassKeyword() {
+        rewriteRun(
+          groovy(
+            """
+              Object.className("foo")
+              """
+          )
+        );
+    }
 }