--- a/langtools/src/jdk.compiler/share/classes/com/sun/tools/classfile/ClassTranslator.java Wed May 27 11:27:42 2015 +0530
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,410 +0,0 @@
-/*
- * Copyright (c) 2008, 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. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * 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 com.sun.tools.classfile;
-
-import java.util.Map;
-
-import com.sun.tools.classfile.ConstantPool.CONSTANT_Class_info;
-import com.sun.tools.classfile.ConstantPool.CONSTANT_Double_info;
-import com.sun.tools.classfile.ConstantPool.CONSTANT_Fieldref_info;
-import com.sun.tools.classfile.ConstantPool.CONSTANT_Float_info;
-import com.sun.tools.classfile.ConstantPool.CONSTANT_Integer_info;
-import com.sun.tools.classfile.ConstantPool.CONSTANT_InterfaceMethodref_info;
-import com.sun.tools.classfile.ConstantPool.CONSTANT_InvokeDynamic_info;
-import com.sun.tools.classfile.ConstantPool.CONSTANT_Long_info;
-import com.sun.tools.classfile.ConstantPool.CONSTANT_MethodHandle_info;
-import com.sun.tools.classfile.ConstantPool.CONSTANT_MethodType_info;
-import com.sun.tools.classfile.ConstantPool.CONSTANT_Methodref_info;
-import com.sun.tools.classfile.ConstantPool.CONSTANT_NameAndType_info;
-import com.sun.tools.classfile.ConstantPool.CONSTANT_String_info;
-import com.sun.tools.classfile.ConstantPool.CONSTANT_Utf8_info;
-import com.sun.tools.classfile.ConstantPool.CPInfo;
-
-/**
- * Rewrites a class file using a map of translations.
- *
- * <p><b>This is NOT part of any supported API.
- * If you write code that depends on this, you do so at your own risk.
- * This code and its internal interfaces are subject to change or
- * deletion without notice.</b>
- */
-public class ClassTranslator
- implements ConstantPool.Visitor<ConstantPool.CPInfo,Map<Object,Object>> {
- /**
- * Create a new ClassFile from {@code cf}, such that for all entries
- * {@code k -\> v} in {@code translations},
- * each occurrence of {@code k} in {@code cf} will be replaced by {@code v}.
- * in
- * @param cf the class file to be processed
- * @param translations the set of translations to be applied
- * @return a copy of {@code} with the values in {@code translations} substituted
- */
- public ClassFile translate(ClassFile cf, Map<Object,Object> translations) {
- ClassFile cf2 = (ClassFile) translations.get(cf);
- if (cf2 == null) {
- ConstantPool constant_pool2 = translate(cf.constant_pool, translations);
- Field[] fields2 = translate(cf.fields, cf.constant_pool, translations);
- Method[] methods2 = translateMethods(cf.methods, cf.constant_pool, translations);
- Attributes attributes2 = translateAttributes(cf.attributes, cf.constant_pool,
- translations);
-
- if (constant_pool2 == cf.constant_pool &&
- fields2 == cf.fields &&
- methods2 == cf.methods &&
- attributes2 == cf.attributes)
- cf2 = cf;
- else
- cf2 = new ClassFile(
- cf.magic,
- cf.minor_version,
- cf.major_version,
- constant_pool2,
- cf.access_flags,
- cf.this_class,
- cf.super_class,
- cf.interfaces,
- fields2,
- methods2,
- attributes2);
- translations.put(cf, cf2);
- }
- return cf2;
- }
-
- ConstantPool translate(ConstantPool cp, Map<Object,Object> translations) {
- ConstantPool cp2 = (ConstantPool) translations.get(cp);
- if (cp2 == null) {
- ConstantPool.CPInfo[] pool2 = new ConstantPool.CPInfo[cp.size()];
- boolean eq = true;
- for (int i = 0; i < cp.size(); ) {
- ConstantPool.CPInfo cpInfo;
- try {
- cpInfo = cp.get(i);
- } catch (ConstantPool.InvalidIndex e) {
- throw new IllegalStateException(e);
- }
- ConstantPool.CPInfo cpInfo2 = translate(cpInfo, translations);
- eq &= (cpInfo == cpInfo2);
- pool2[i] = cpInfo2;
- if (cpInfo.getTag() != cpInfo2.getTag())
- throw new IllegalStateException();
- i += cpInfo.size();
- }
-
- if (eq)
- cp2 = cp;
- else
- cp2 = new ConstantPool(pool2);
-
- translations.put(cp, cp2);
- }
- return cp2;
- }
-
- ConstantPool.CPInfo translate(ConstantPool.CPInfo cpInfo, Map<Object,Object> translations) {
- ConstantPool.CPInfo cpInfo2 = (ConstantPool.CPInfo) translations.get(cpInfo);
- if (cpInfo2 == null) {
- cpInfo2 = cpInfo.accept(this, translations);
- translations.put(cpInfo, cpInfo2);
- }
- return cpInfo2;
- }
-
- Field[] translate(Field[] fields, ConstantPool constant_pool, Map<Object,Object> translations) {
- Field[] fields2 = (Field[]) translations.get(fields);
- if (fields2 == null) {
- fields2 = new Field[fields.length];
- for (int i = 0; i < fields.length; i++)
- fields2[i] = translate(fields[i], constant_pool, translations);
- if (equal(fields, fields2))
- fields2 = fields;
- translations.put(fields, fields2);
- }
- return fields2;
- }
-
- Field translate(Field field, ConstantPool constant_pool, Map<Object,Object> translations) {
- Field field2 = (Field) translations.get(field);
- if (field2 == null) {
- Attributes attributes2 = translateAttributes(field.attributes, constant_pool,
- translations);
-
- if (attributes2 == field.attributes)
- field2 = field;
- else
- field2 = new Field(
- field.access_flags,
- field.name_index,
- field.descriptor,
- attributes2);
- translations.put(field, field2);
- }
- return field2;
- }
-
- Method[] translateMethods(Method[] methods, ConstantPool constant_pool, Map<Object,Object> translations) {
- Method[] methods2 = (Method[]) translations.get(methods);
- if (methods2 == null) {
- methods2 = new Method[methods.length];
- for (int i = 0; i < methods.length; i++)
- methods2[i] = translate(methods[i], constant_pool, translations);
- if (equal(methods, methods2))
- methods2 = methods;
- translations.put(methods, methods2);
- }
- return methods2;
- }
-
- Method translate(Method method, ConstantPool constant_pool, Map<Object,Object> translations) {
- Method method2 = (Method) translations.get(method);
- if (method2 == null) {
- Attributes attributes2 = translateAttributes(method.attributes, constant_pool,
- translations);
-
- if (attributes2 == method.attributes)
- method2 = method;
- else
- method2 = new Method(
- method.access_flags,
- method.name_index,
- method.descriptor,
- attributes2);
- translations.put(method, method2);
- }
- return method2;
- }
-
- Attributes translateAttributes(Attributes attributes,
- ConstantPool constant_pool, Map<Object,Object> translations) {
- Attributes attributes2 = (Attributes) translations.get(attributes);
- if (attributes2 == null) {
- Attribute[] attrArray2 = new Attribute[attributes.size()];
- ConstantPool constant_pool2 = translate(constant_pool, translations);
- boolean attrsEqual = true;
- for (int i = 0; i < attributes.size(); i++) {
- Attribute attr = attributes.get(i);
- Attribute attr2 = translate(attr, translations);
- if (attr2 != attr)
- attrsEqual = false;
- attrArray2[i] = attr2;
- }
- if ((constant_pool2 == constant_pool) && attrsEqual)
- attributes2 = attributes;
- else
- attributes2 = new Attributes(constant_pool2, attrArray2);
- translations.put(attributes, attributes2);
- }
- return attributes2;
- }
-
- Attribute translate(Attribute attribute, Map<Object,Object> translations) {
- Attribute attribute2 = (Attribute) translations.get(attribute);
- if (attribute2 == null) {
- attribute2 = attribute; // don't support translation within attributes yet
- // (what about Code attribute)
- translations.put(attribute, attribute2);
- }
- return attribute2;
- }
-
- private static <T> boolean equal(T[] a1, T[] a2) {
- if (a1 == null || a2 == null)
- return (a1 == a2);
- if (a1.length != a2.length)
- return false;
- for (int i = 0; i < a1.length; i++) {
- if (a1[i] != a2[i])
- return false;
- }
- return true;
- }
-
- public CPInfo visitClass(CONSTANT_Class_info info, Map<Object, Object> translations) {
- CONSTANT_Class_info info2 = (CONSTANT_Class_info) translations.get(info);
- if (info2 == null) {
- ConstantPool cp2 = translate(info.cp, translations);
- if (cp2 == info.cp)
- info2 = info;
- else
- info2 = new CONSTANT_Class_info(cp2, info.name_index);
- translations.put(info, info2);
- }
- return info;
- }
-
- public CPInfo visitDouble(CONSTANT_Double_info info, Map<Object, Object> translations) {
- CONSTANT_Double_info info2 = (CONSTANT_Double_info) translations.get(info);
- if (info2 == null) {
- info2 = info;
- translations.put(info, info2);
- }
- return info;
- }
-
- public CPInfo visitFieldref(CONSTANT_Fieldref_info info, Map<Object, Object> translations) {
- CONSTANT_Fieldref_info info2 = (CONSTANT_Fieldref_info) translations.get(info);
- if (info2 == null) {
- ConstantPool cp2 = translate(info.cp, translations);
- if (cp2 == info.cp)
- info2 = info;
- else
- info2 = new CONSTANT_Fieldref_info(cp2, info.class_index, info.name_and_type_index);
- translations.put(info, info2);
- }
- return info;
- }
-
- public CPInfo visitFloat(CONSTANT_Float_info info, Map<Object, Object> translations) {
- CONSTANT_Float_info info2 = (CONSTANT_Float_info) translations.get(info);
- if (info2 == null) {
- info2 = info;
- translations.put(info, info2);
- }
- return info;
- }
-
- public CPInfo visitInteger(CONSTANT_Integer_info info, Map<Object, Object> translations) {
- CONSTANT_Integer_info info2 = (CONSTANT_Integer_info) translations.get(info);
- if (info2 == null) {
- info2 = info;
- translations.put(info, info2);
- }
- return info;
- }
-
- public CPInfo visitInterfaceMethodref(CONSTANT_InterfaceMethodref_info info, Map<Object, Object> translations) {
- CONSTANT_InterfaceMethodref_info info2 = (CONSTANT_InterfaceMethodref_info) translations.get(info);
- if (info2 == null) {
- ConstantPool cp2 = translate(info.cp, translations);
- if (cp2 == info.cp)
- info2 = info;
- else
- info2 = new CONSTANT_InterfaceMethodref_info(cp2, info.class_index, info.name_and_type_index);
- translations.put(info, info2);
- }
- return info;
- }
-
- public CPInfo visitInvokeDynamic(CONSTANT_InvokeDynamic_info info, Map<Object, Object> translations) {
- CONSTANT_InvokeDynamic_info info2 = (CONSTANT_InvokeDynamic_info) translations.get(info);
- if (info2 == null) {
- ConstantPool cp2 = translate(info.cp, translations);
- if (cp2 == info.cp) {
- info2 = info;
- } else {
- info2 = new CONSTANT_InvokeDynamic_info(cp2, info.bootstrap_method_attr_index, info.name_and_type_index);
- }
- translations.put(info, info2);
- }
- return info;
- }
-
- public CPInfo visitLong(CONSTANT_Long_info info, Map<Object, Object> translations) {
- CONSTANT_Long_info info2 = (CONSTANT_Long_info) translations.get(info);
- if (info2 == null) {
- info2 = info;
- translations.put(info, info2);
- }
- return info;
- }
-
- public CPInfo visitNameAndType(CONSTANT_NameAndType_info info, Map<Object, Object> translations) {
- CONSTANT_NameAndType_info info2 = (CONSTANT_NameAndType_info) translations.get(info);
- if (info2 == null) {
- ConstantPool cp2 = translate(info.cp, translations);
- if (cp2 == info.cp)
- info2 = info;
- else
- info2 = new CONSTANT_NameAndType_info(cp2, info.name_index, info.type_index);
- translations.put(info, info2);
- }
- return info;
- }
-
- public CPInfo visitMethodref(CONSTANT_Methodref_info info, Map<Object, Object> translations) {
- CONSTANT_Methodref_info info2 = (CONSTANT_Methodref_info) translations.get(info);
- if (info2 == null) {
- ConstantPool cp2 = translate(info.cp, translations);
- if (cp2 == info.cp)
- info2 = info;
- else
- info2 = new CONSTANT_Methodref_info(cp2, info.class_index, info.name_and_type_index);
- translations.put(info, info2);
- }
- return info;
- }
-
- public CPInfo visitMethodHandle(CONSTANT_MethodHandle_info info, Map<Object, Object> translations) {
- CONSTANT_MethodHandle_info info2 = (CONSTANT_MethodHandle_info) translations.get(info);
- if (info2 == null) {
- ConstantPool cp2 = translate(info.cp, translations);
- if (cp2 == info.cp) {
- info2 = info;
- } else {
- info2 = new CONSTANT_MethodHandle_info(cp2, info.reference_kind, info.reference_index);
- }
- translations.put(info, info2);
- }
- return info;
- }
-
- public CPInfo visitMethodType(CONSTANT_MethodType_info info, Map<Object, Object> translations) {
- CONSTANT_MethodType_info info2 = (CONSTANT_MethodType_info) translations.get(info);
- if (info2 == null) {
- ConstantPool cp2 = translate(info.cp, translations);
- if (cp2 == info.cp) {
- info2 = info;
- } else {
- info2 = new CONSTANT_MethodType_info(cp2, info.descriptor_index);
- }
- translations.put(info, info2);
- }
- return info;
- }
-
- public CPInfo visitString(CONSTANT_String_info info, Map<Object, Object> translations) {
- CONSTANT_String_info info2 = (CONSTANT_String_info) translations.get(info);
- if (info2 == null) {
- ConstantPool cp2 = translate(info.cp, translations);
- if (cp2 == info.cp)
- info2 = info;
- else
- info2 = new CONSTANT_String_info(cp2, info.string_index);
- translations.put(info, info2);
- }
- return info;
- }
-
- public CPInfo visitUtf8(CONSTANT_Utf8_info info, Map<Object, Object> translations) {
- CONSTANT_Utf8_info info2 = (CONSTANT_Utf8_info) translations.get(info);
- if (info2 == null) {
- info2 = info;
- translations.put(info, info2);
- }
- return info;
- }
-
-}