8012664: Add tests for java.util.stream and lambda translation
Reviewed-by: mduigou, briangoetz
Contributed-by: Brian Goetz <brian.goetz@oracle.com>, Paul Sandoz <paul.sandoz@oracle.com>, Mike Duigou <mike.duigou@oracle.com>, Robert Field <robert.field@oracle.com>, Jim Gish <jim.gish@oracle.com>
diff --git a/test/jdk/lambda/separate/ClassToInterfaceConverter.java b/test/jdk/lambda/separate/ClassToInterfaceConverter.java
new file mode 100644
index 0000000..48c0e8d
--- /dev/null
+++ b/test/jdk/lambda/separate/ClassToInterfaceConverter.java
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2012 Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package separate;
+
+import java.io.*;
+import java.util.*;
+
+public class ClassToInterfaceConverter implements ClassFilePreprocessor {
+
+ private String whichClass;
+
+ public ClassToInterfaceConverter(String className) {
+ this.whichClass = className;
+ }
+
+ private boolean utf8Matches(ClassFile.CpEntry entry, String v) {
+ if (!(entry instanceof ClassFile.CpUtf8)) {
+ return false;
+ }
+ ClassFile.CpUtf8 utf8 = (ClassFile.CpUtf8)entry;
+ if (v.length() != utf8.bytes.length) {
+ return false;
+ }
+ for (int i = 0; i < v.length(); ++i) {
+ if (v.charAt(i) != utf8.bytes[i]) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ private void convertToInterface(ClassFile cf) {
+ cf.access_flags = 0x0601; // ACC_INTERFACE | ACC_ABSTRACT | ACC_PUBLIC
+ ArrayList<ClassFile.Method> new_methods = new ArrayList<>();
+ // Find <init> method and delete it
+ for (int i = 0; i < cf.methods.size(); ++i) {
+ ClassFile.Method method = cf.methods.get(i);
+ ClassFile.CpEntry name = cf.constant_pool.get(method.name_index);
+ if (!utf8Matches(name, "<init>")) {
+ new_methods.add(method);
+ }
+ }
+ cf.methods = new_methods;
+ }
+
+ public byte[] preprocess(String classname, byte[] bytes) {
+ ClassFile cf = new ClassFile(bytes);
+
+ ClassFile.CpEntry entry = cf.constant_pool.get(cf.this_class);
+ ClassFile.CpEntry name = cf.constant_pool.get(
+ ((ClassFile.CpClass)entry).name_index);
+ if (utf8Matches(name, whichClass)) {
+ convertToInterface(cf);
+ return cf.toByteArray();
+ } else {
+ return bytes; // unmodified
+ }
+ }
+
+/*
+ public static void main(String argv[]) throws Exception {
+ File input = new File(argv[0]);
+ byte[] buffer = new byte[(int)input.length()];
+ new FileInputStream(input).read(buffer);
+
+ ClassFilePreprocessor cfp = new ClassToInterfaceConverter("Hello");
+ byte[] cf = cfp.preprocess(argv[0], buffer);
+ new FileOutputStream(argv[0] + ".mod").write(cf);
+ }
+*/
+}