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8020731: Revisit checkPermission calls in Context class

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Reviewed-by: attila, hannesw
This commit is contained in:
Athijegannathan Sundararajan 2013-07-18 18:08:26 +05:30
parent c4bea48ac1
commit 21be9aded6
10 changed files with 73 additions and 229 deletions
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39
nashorn/src/jdk/nashorn/api/scripting/NashornScriptEngine.java
View file

@ -209,10 +209,10 @@ public final class NashornScriptEngine extends AbstractScriptEngine implements C
}
try {
final ScriptObject oldGlobal = getNashornGlobal();
final ScriptObject oldGlobal = Context.getGlobal();
try {
if(oldGlobal != ctxtGlobal) {
setNashornGlobal(ctxtGlobal);
Context.setGlobal(ctxtGlobal);
}
if (! isInterfaceImplemented(clazz, realSelf)) {
@ -221,7 +221,7 @@ public final class NashornScriptEngine extends AbstractScriptEngine implements C
return clazz.cast(JavaAdapterFactory.getConstructor(realSelf.getClass(), clazz).invoke(realSelf));
} finally {
if(oldGlobal != ctxtGlobal) {
setNashornGlobal(oldGlobal);
Context.setGlobal(oldGlobal);
}
}
} catch(final RuntimeException|Error e) {
@ -357,7 +357,7 @@ public final class NashornScriptEngine extends AbstractScriptEngine implements C
}
private Object invokeImpl(final Object selfObject, final String name, final Object... args) throws ScriptException, NoSuchMethodException {
final ScriptObject oldGlobal = getNashornGlobal();
final ScriptObject oldGlobal = Context.getGlobal();
final ScriptObject ctxtGlobal = getNashornGlobalFrom(context);
final boolean globalChanged = (oldGlobal != ctxtGlobal);
@ -365,7 +365,7 @@ public final class NashornScriptEngine extends AbstractScriptEngine implements C
try {
if (globalChanged) {
setNashornGlobal(ctxtGlobal);
Context.setGlobal(ctxtGlobal);
}
ScriptObject sobj;
@ -398,7 +398,7 @@ public final class NashornScriptEngine extends AbstractScriptEngine implements C
throw new NoSuchMethodException(name);
} finally {
if (globalChanged) {
setNashornGlobal(oldGlobal);
Context.setGlobal(oldGlobal);
}
}
}
@ -411,12 +411,12 @@ public final class NashornScriptEngine extends AbstractScriptEngine implements C
if (script == null) {
return null;
}
final ScriptObject oldGlobal = getNashornGlobal();
final ScriptObject oldGlobal = Context.getGlobal();
final ScriptObject ctxtGlobal = getNashornGlobalFrom(ctxt);
final boolean globalChanged = (oldGlobal != ctxtGlobal);
try {
if (globalChanged) {
setNashornGlobal(ctxtGlobal);
Context.setGlobal(ctxtGlobal);
}
setContextVariables(ctxt);
@ -426,7 +426,7 @@ public final class NashornScriptEngine extends AbstractScriptEngine implements C
throw new AssertionError("should not reach here");
} finally {
if (globalChanged) {
setNashornGlobal(oldGlobal);
Context.setGlobal(oldGlobal);
}
}
}
@ -469,12 +469,12 @@ public final class NashornScriptEngine extends AbstractScriptEngine implements C
}
private ScriptFunction compileImpl(final Source source, final ScriptContext ctxt) throws ScriptException {
final ScriptObject oldGlobal = getNashornGlobal();
final ScriptObject oldGlobal = Context.getGlobal();
final ScriptObject ctxtGlobal = getNashornGlobalFrom(ctxt);
final boolean globalChanged = (oldGlobal != ctxtGlobal);
try {
if (globalChanged) {
setNashornGlobal(ctxtGlobal);
Context.setGlobal(ctxtGlobal);
}
return nashornContext.compileScript(source, ctxtGlobal);
@ -483,7 +483,7 @@ public final class NashornScriptEngine extends AbstractScriptEngine implements C
throw new AssertionError("should not reach here");
} finally {
if (globalChanged) {
setNashornGlobal(oldGlobal);
Context.setGlobal(oldGlobal);
}
}
}
@ -502,19 +502,4 @@ public final class NashornScriptEngine extends AbstractScriptEngine implements C
}
return true;
}
// don't make this public!!
static ScriptObject getNashornGlobal() {
return Context.getGlobal();
}
static void setNashornGlobal(final ScriptObject newGlobal) {
AccessController.doPrivileged(new PrivilegedAction<Void>() {
@Override
public Void run() {
Context.setGlobal(newGlobal);
return null;
}
});
}
}

24
nashorn/src/jdk/nashorn/api/scripting/ScriptObjectMirror.java
View file

@ -79,12 +79,12 @@ public final class ScriptObjectMirror extends JSObject implements Bindings {
// JSObject methods
@Override
public Object call(final String functionName, final Object... args) {
final ScriptObject oldGlobal = NashornScriptEngine.getNashornGlobal();
final ScriptObject oldGlobal = Context.getGlobal();
final boolean globalChanged = (oldGlobal != global);
try {
if (globalChanged) {
NashornScriptEngine.setNashornGlobal(global);
Context.setGlobal(global);
}
final Object val = functionName == null? sobj : sobj.get(functionName);
@ -100,19 +100,19 @@ public final class ScriptObjectMirror extends JSObject implements Bindings {
throw new RuntimeException(t);
} finally {
if (globalChanged) {
NashornScriptEngine.setNashornGlobal(oldGlobal);
Context.setGlobal(oldGlobal);
}
}
}
@Override
public Object newObject(final String functionName, final Object... args) {
final ScriptObject oldGlobal = NashornScriptEngine.getNashornGlobal();
final ScriptObject oldGlobal = Context.getGlobal();
final boolean globalChanged = (oldGlobal != global);
try {
if (globalChanged) {
NashornScriptEngine.setNashornGlobal(global);
Context.setGlobal(global);
}
final Object val = functionName == null? sobj : sobj.get(functionName);
@ -128,7 +128,7 @@ public final class ScriptObjectMirror extends JSObject implements Bindings {
throw new RuntimeException(t);
} finally {
if (globalChanged) {
NashornScriptEngine.setNashornGlobal(oldGlobal);
Context.setGlobal(oldGlobal);
}
}
}
@ -272,7 +272,7 @@ public final class ScriptObjectMirror extends JSObject implements Bindings {
@Override
public Object put(final String key, final Object value) {
final ScriptObject oldGlobal = NashornScriptEngine.getNashornGlobal();
final ScriptObject oldGlobal = Context.getGlobal();
final boolean globalChanged = (oldGlobal != global);
return inGlobal(new Callable<Object>() {
@Override public Object call() {
@ -284,7 +284,7 @@ public final class ScriptObjectMirror extends JSObject implements Bindings {
@Override
public void putAll(final Map<? extends String, ? extends Object> map) {
final ScriptObject oldGlobal = NashornScriptEngine.getNashornGlobal();
final ScriptObject oldGlobal = Context.getGlobal();
final boolean globalChanged = (oldGlobal != global);
inGlobal(new Callable<Object>() {
@Override public Object call() {
@ -535,7 +535,7 @@ public final class ScriptObjectMirror extends JSObject implements Bindings {
* @return wrapped object
*/
public static Object wrap(final Object obj, final ScriptObject homeGlobal) {
return (obj instanceof ScriptObject) ? new ScriptObjectMirror((ScriptObject)obj, homeGlobal) : obj;
return (obj instanceof ScriptObject && homeGlobal != null) ? new ScriptObjectMirror((ScriptObject)obj, homeGlobal) : obj;
}
/**
@ -613,10 +613,10 @@ public final class ScriptObjectMirror extends JSObject implements Bindings {
// internals only below this.
private <V> V inGlobal(final Callable<V> callable) {
final ScriptObject oldGlobal = NashornScriptEngine.getNashornGlobal();
final ScriptObject oldGlobal = Context.getGlobal();
final boolean globalChanged = (oldGlobal != global);
if (globalChanged) {
NashornScriptEngine.setNashornGlobal(global);
Context.setGlobal(global);
}
try {
return callable.call();
@ -626,7 +626,7 @@ public final class ScriptObjectMirror extends JSObject implements Bindings {
throw new AssertionError("Cannot happen", e);
} finally {
if (globalChanged) {
NashornScriptEngine.setNashornGlobal(oldGlobal);
Context.setGlobal(oldGlobal);
}
}
}

27
nashorn/src/jdk/nashorn/internal/objects/Global.java
View file

@ -411,18 +411,33 @@ public final class Global extends ScriptObject implements GlobalObject, Scope {
// initialized by nasgen
private static PropertyMap $nasgenmap$;
// performs initialization checks for Global constructor and returns the
// PropertyMap, if everything is fine.
private static PropertyMap checkAndGetMap(final Context context) {
// security check first
final SecurityManager sm = System.getSecurityManager();
if (sm != null) {
sm.checkPermission(new RuntimePermission("nashorn.newGlobal"));
}
// null check on context
context.getClass();
/*
* Duplicate global's map and use it. This way the initial Map filled
* by nasgen (referenced from static field in this class) is retained
* 'as is' (as that one is process wide singleton.
*/
return $nasgenmap$.duplicate();
}
/**
* Constructor
*
* @param context the context
*/
public Global(final Context context) {
/*
* Duplicate global's map and use it. This way the initial Map filled
* by nasgen (referenced from static field in this class) is retained
* 'as is' (as that one is process wide singleton.
*/
super($nasgenmap$.duplicate());
super(checkAndGetMap(context));
this.setContext(context);
this.setIsScope();

16
nashorn/src/jdk/nashorn/internal/runtime/Context.java
View file

@ -121,11 +121,6 @@ public final class Context {
* @param global the global scope
*/
public static void setGlobal(final ScriptObject global) {
final SecurityManager sm = System.getSecurityManager();
if (sm != null) {
sm.checkPermission(new RuntimePermission("nashorn.setGlobal"));
}
if (global != null && !(global instanceof Global)) {
throw new IllegalArgumentException("global is not an instance of Global!");
}
@ -645,12 +640,7 @@ public final class Context {
* @return the global script object
*/
public ScriptObject newGlobal() {
final SecurityManager sm = System.getSecurityManager();
if (sm != null) {
sm.checkPermission(new RuntimePermission("nashorn.newGlobal"));
}
return newGlobalTrusted();
return new Global(this);
}
/**
@ -828,10 +818,6 @@ public final class Context {
});
}
private ScriptObject newGlobalTrusted() {
return new Global(this);
}
private long getUniqueScriptId() {
return uniqueScriptId.getAndIncrement();
}

2
nashorn/src/jdk/nashorn/internal/runtime/NativeJavaPackage.java
View file

@ -84,8 +84,8 @@ public final class NativeJavaPackage extends ScriptObject {
* @param proto proto
*/
public NativeJavaPackage(final String name, final ScriptObject proto) {
super(proto, null);
this.name = name;
this.setProto(proto);
}
@Override

4
nashorn/src/jdk/nashorn/internal/runtime/ScriptRuntime.java
View file

@ -335,9 +335,7 @@ public final class ScriptRuntime {
*/
public static Object checkAndApply(final ScriptFunction target, final Object self, final Object... args) {
final ScriptObject global = Context.getGlobalTrusted();
if (! (global instanceof GlobalObject)) {
throw new IllegalStateException("No current global set");
}
assert (global instanceof GlobalObject): "No current global set";
if (target.getContext() != global.getContext()) {
throw new IllegalArgumentException("'target' function is not from current Context");

4
nashorn/src/jdk/nashorn/internal/runtime/WithObject.java
View file

@ -58,10 +58,8 @@ public final class WithObject extends ScriptObject implements Scope {
* @param expression with expression
*/
public WithObject(final ScriptObject scope, final Object expression) {
super();
super(scope, null);
setIsScope();
setProto(scope);
this.expression = expression;
}

33
nashorn/src/jdk/nashorn/internal/runtime/linker/JavaAdapterBytecodeGenerator.java
View file

@ -121,7 +121,23 @@ import jdk.nashorn.internal.runtime.ScriptObject;
* constructor's trailing position and thus provide further instance-specific overrides. The order of invocation is
* always instance-specified method, then a class-specified method, and finally the superclass method.
*/
final class JavaAdapterBytecodeGenerator extends JavaAdapterGeneratorBase {
final class JavaAdapterBytecodeGenerator {
static final Type CONTEXT_TYPE = Type.getType(Context.class);
static final Type OBJECT_TYPE = Type.getType(Object.class);
static final Type SCRIPT_OBJECT_TYPE = Type.getType(ScriptObject.class);
static final String CONTEXT_TYPE_NAME = CONTEXT_TYPE.getInternalName();
static final String OBJECT_TYPE_NAME = OBJECT_TYPE.getInternalName();
static final String INIT = "<init>";
static final String GLOBAL_FIELD_NAME = "global";
static final String SCRIPT_OBJECT_TYPE_DESCRIPTOR = SCRIPT_OBJECT_TYPE.getDescriptor();
static final String SET_GLOBAL_METHOD_DESCRIPTOR = Type.getMethodDescriptor(Type.VOID_TYPE, SCRIPT_OBJECT_TYPE);
static final String VOID_NOARG_METHOD_DESCRIPTOR = Type.getMethodDescriptor(Type.VOID_TYPE);
private static final Type SCRIPT_FUNCTION_TYPE = Type.getType(ScriptFunction.class);
private static final Type STRING_TYPE = Type.getType(String.class);
private static final Type METHOD_TYPE_TYPE = Type.getType(MethodType.class);
@ -151,7 +167,7 @@ final class JavaAdapterBytecodeGenerator extends JavaAdapterGeneratorBase {
// Class name suffix used to append to the adaptee class name, when it can be defined in the adaptee's package.
private static final String ADAPTER_CLASS_NAME_SUFFIX = "$$NashornJavaAdapter";
private static final String JAVA_PACKAGE_PREFIX = "java/";
private static final int MAX_GENERATED_TYPE_NAME_LENGTH = 238; //255 - 17; 17 is the maximum possible length for the global setter inner class suffix
private static final int MAX_GENERATED_TYPE_NAME_LENGTH = 255;
private static final String CLASS_INIT = "<clinit>";
private static final String STATIC_GLOBAL_FIELD_NAME = "staticGlobal";
@ -175,8 +191,6 @@ final class JavaAdapterBytecodeGenerator extends JavaAdapterGeneratorBase {
private final String superClassName;
// Binary name of the generated class.
private final String generatedClassName;
// Binary name of the PrivilegedAction inner class that is used to
private final String globalSetterClassName;
private final Set<String> usedFieldNames = new HashSet<>();
private final Set<String> abstractMethodNames = new HashSet<>();
private final String samName;
@ -220,9 +234,6 @@ final class JavaAdapterBytecodeGenerator extends JavaAdapterGeneratorBase {
l = random.nextLong();
}
// NOTE: they way this class name is calculated affects the value of MAX_GENERATED_TYPE_NAME_LENGTH constant. If
// you change the calculation of globalSetterClassName, adjust the constant too.
globalSetterClassName = generatedClassName.concat("$" + Long.toHexString(l & Long.MAX_VALUE));
cw.visit(Opcodes.V1_7, ACC_PUBLIC | ACC_SUPER | ACC_FINAL, generatedClassName, null, superClassName, getInternalTypeNames(interfaces));
generateGlobalFields();
@ -250,7 +261,7 @@ final class JavaAdapterBytecodeGenerator extends JavaAdapterGeneratorBase {
}
JavaAdapterClassLoader createAdapterClassLoader() {
return new JavaAdapterClassLoader(generatedClassName, cw.toByteArray(), globalSetterClassName);
return new JavaAdapterClassLoader(generatedClassName, cw.toByteArray());
}
boolean isAutoConvertibleFromFunction() {
@ -511,8 +522,8 @@ final class JavaAdapterBytecodeGenerator extends JavaAdapterGeneratorBase {
mv.invokestatic(CONTEXT_TYPE_NAME, "getGlobal", GET_GLOBAL_METHOD_DESCRIPTOR);
}
private void invokeSetGlobal(final InstructionAdapter mv) {
mv.invokestatic(globalSetterClassName, "setGlobal", SET_GLOBAL_METHOD_DESCRIPTOR);
private static void invokeSetGlobal(final InstructionAdapter mv) {
mv.invokestatic(CONTEXT_TYPE_NAME, "setGlobal", SET_GLOBAL_METHOD_DESCRIPTOR);
}
/**
@ -794,7 +805,7 @@ final class JavaAdapterBytecodeGenerator extends JavaAdapterGeneratorBase {
* entry.
* @param globalsDifferVar index of the boolean local variable that is true if the global needs to be restored.
*/
private void emitFinally(final InstructionAdapter mv, final int currentGlobalVar, final int globalsDifferVar) {
private static void emitFinally(final InstructionAdapter mv, final int currentGlobalVar, final int globalsDifferVar) {
// Emit code to restore the previous Nashorn global if needed
mv.visitVarInsn(ILOAD, globalsDifferVar);
final Label skip = new Label();

97
nashorn/src/jdk/nashorn/internal/runtime/linker/JavaAdapterClassLoader.java
View file

@ -25,16 +25,6 @@
package jdk.nashorn.internal.runtime.linker;
import static jdk.internal.org.objectweb.asm.Opcodes.ACC_FINAL;
import static jdk.internal.org.objectweb.asm.Opcodes.ACC_PRIVATE;
import static jdk.internal.org.objectweb.asm.Opcodes.ACC_PUBLIC;
import static jdk.internal.org.objectweb.asm.Opcodes.ACC_STATIC;
import static jdk.internal.org.objectweb.asm.Opcodes.ACC_SUPER;
import static jdk.internal.org.objectweb.asm.Opcodes.ACONST_NULL;
import static jdk.internal.org.objectweb.asm.Opcodes.ALOAD;
import static jdk.internal.org.objectweb.asm.Opcodes.ARETURN;
import static jdk.internal.org.objectweb.asm.Opcodes.RETURN;
import java.security.AccessController;
import java.security.AllPermission;
import java.security.CodeSigner;
@ -45,12 +35,6 @@ import java.security.ProtectionDomain;
import java.security.SecureClassLoader;
import jdk.internal.dynalink.beans.StaticClass;
import jdk.internal.org.objectweb.asm.ClassWriter;
import jdk.internal.org.objectweb.asm.Opcodes;
import jdk.internal.org.objectweb.asm.Type;
import jdk.internal.org.objectweb.asm.commons.InstructionAdapter;
import jdk.nashorn.internal.runtime.Context;
import jdk.nashorn.internal.runtime.ScriptObject;
/**
* This class encapsulates the bytecode of the adapter class and can be used to load it into the JVM as an actual Class.
@ -60,22 +44,15 @@ import jdk.nashorn.internal.runtime.ScriptObject;
* class are normally created by {@link JavaAdapterBytecodeGenerator}.
*/
@SuppressWarnings("javadoc")
class JavaAdapterClassLoader extends JavaAdapterGeneratorBase {
private static final Type PRIVILEGED_ACTION_TYPE = Type.getType(PrivilegedAction.class);
private static final String PRIVILEGED_ACTION_TYPE_NAME = PRIVILEGED_ACTION_TYPE.getInternalName();
private static final String PRIVILEGED_RUN_METHOD_DESCRIPTOR = Type.getMethodDescriptor(OBJECT_TYPE);
final class JavaAdapterClassLoader {
private static final ProtectionDomain GENERATED_PROTECTION_DOMAIN = createGeneratedProtectionDomain();
private final String className;
private final byte[] classBytes;
private final String globalSetterClassName;
JavaAdapterClassLoader(String className, byte[] classBytes, String globalSetterClassName) {
JavaAdapterClassLoader(String className, byte[] classBytes) {
this.className = className.replace('/', '.');
this.classBytes = classBytes;
this.globalSetterClassName = globalSetterClassName.replace('/', '.');
}
/**
@ -116,7 +93,6 @@ class JavaAdapterClassLoader extends JavaAdapterGeneratorBase {
private ClassLoader createClassLoader(final ClassLoader parentLoader) {
return new AdapterLoader(parentLoader) {
private final ClassLoader myLoader = getClass().getClassLoader();
private final ProtectionDomain myProtectionDomain = getClass().getProtectionDomain();
@Override
public Class<?> loadClass(final String name, final boolean resolve) throws ClassNotFoundException {
@ -138,9 +114,6 @@ class JavaAdapterClassLoader extends JavaAdapterGeneratorBase {
protected Class<?> findClass(final String name) throws ClassNotFoundException {
if(name.equals(className)) {
return defineClass(name, classBytes, 0, classBytes.length, GENERATED_PROTECTION_DOMAIN);
} else if(name.equals(globalSetterClassName)) {
final byte[] bytes = generatePrivilegedActionClassBytes(globalSetterClassName.replace('.', '/'));
return defineClass(name, bytes, 0, bytes.length, myProtectionDomain);
} else {
throw new ClassNotFoundException(name);
}
@ -158,70 +131,4 @@ class JavaAdapterClassLoader extends JavaAdapterGeneratorBase {
permissions.add(new AllPermission());
return new ProtectionDomain(new CodeSource(null, (CodeSigner[])null), permissions);
}
/**
* Generates a PrivilegedAction implementation class for invoking {@link Context#setGlobal(ScriptObject)} from the
* adapter class.
*/
private static byte[] generatePrivilegedActionClassBytes(final String className) {
final ClassWriter w = new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
// class GlobalSetter implements PrivilegedAction {
w.visit(Opcodes.V1_7, ACC_SUPER | ACC_FINAL, className, null, OBJECT_TYPE_NAME, new String[] {
PRIVILEGED_ACTION_TYPE_NAME
});
// private final ScriptObject global;
w.visitField(ACC_PRIVATE | ACC_FINAL, GLOBAL_FIELD_NAME, SCRIPT_OBJECT_TYPE_DESCRIPTOR, null, null).visitEnd();
// private GlobalSetter(ScriptObject global) {
InstructionAdapter mv = new InstructionAdapter(w.visitMethod(ACC_PRIVATE, INIT,
SET_GLOBAL_METHOD_DESCRIPTOR, null, new String[0]));
mv.visitCode();
// super();
mv.visitVarInsn(ALOAD, 0);
mv.invokespecial(OBJECT_TYPE_NAME, INIT, VOID_NOARG_METHOD_DESCRIPTOR);
// this.global = global;
mv.visitVarInsn(ALOAD, 0);
mv.visitVarInsn(ALOAD, 1);
mv.putfield(className, GLOBAL_FIELD_NAME, SCRIPT_OBJECT_TYPE_DESCRIPTOR);
mv.visitInsn(RETURN);
mv.visitEnd();
mv.visitMaxs(0, 0);
// public Object run() {
mv = new InstructionAdapter(w.visitMethod(ACC_PUBLIC, "run", PRIVILEGED_RUN_METHOD_DESCRIPTOR, null,
new String[0]));
mv.visitCode();
// Context.setGlobal(this.global);
mv.visitVarInsn(ALOAD, 0);
mv.getfield(className, GLOBAL_FIELD_NAME, SCRIPT_OBJECT_TYPE_DESCRIPTOR);
mv.invokestatic(CONTEXT_TYPE_NAME, "setGlobal", SET_GLOBAL_METHOD_DESCRIPTOR);
// return null;
mv.visitInsn(ACONST_NULL);
mv.visitInsn(ARETURN);
mv.visitEnd();
mv.visitMaxs(0, 0);
// static void setGlobal(ScriptObject global) {
mv = new InstructionAdapter(w.visitMethod(ACC_STATIC, "setGlobal", SET_GLOBAL_METHOD_DESCRIPTOR, null,
new String[0]));
mv.visitCode();
// new GlobalSetter(ScriptObject global)
mv.anew(Type.getType("L" + className + ";"));
mv.dup();
mv.visitVarInsn(ALOAD, 0);
mv.invokespecial(className, INIT, SET_GLOBAL_METHOD_DESCRIPTOR);
// AccessController.doPrivileged(...)
mv.invokestatic(Type.getInternalName(AccessController.class), "doPrivileged", Type.getMethodDescriptor(
OBJECT_TYPE, PRIVILEGED_ACTION_TYPE));
mv.pop();
mv.visitInsn(RETURN);
mv.visitEnd();
mv.visitMaxs(0, 0);
return w.toByteArray();
}
}

56
nashorn/src/jdk/nashorn/internal/runtime/linker/JavaAdapterGeneratorBase.java
View file

@ -1,56 +0,0 @@
/*
* Copyright (c) 2010, 2013, 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 jdk.nashorn.internal.runtime.linker;
import jdk.internal.org.objectweb.asm.Type;
import jdk.nashorn.internal.runtime.Context;
import jdk.nashorn.internal.runtime.ScriptObject;
/**
* Base class for both {@link JavaAdapterBytecodeGenerator} and {@link JavaAdapterClassLoader}, containing those
* bytecode types, type names and method descriptor that are used by both.
*/
@SuppressWarnings("javadoc")
abstract class JavaAdapterGeneratorBase {
static final Type CONTEXT_TYPE = Type.getType(Context.class);
static final Type OBJECT_TYPE = Type.getType(Object.class);
static final Type SCRIPT_OBJECT_TYPE = Type.getType(ScriptObject.class);
static final String CONTEXT_TYPE_NAME = CONTEXT_TYPE.getInternalName();
static final String OBJECT_TYPE_NAME = OBJECT_TYPE.getInternalName();
static final String INIT = "<init>";
static final String GLOBAL_FIELD_NAME = "global";
static final String SCRIPT_OBJECT_TYPE_DESCRIPTOR = SCRIPT_OBJECT_TYPE.getDescriptor();
static final String SET_GLOBAL_METHOD_DESCRIPTOR = Type.getMethodDescriptor(Type.VOID_TYPE, SCRIPT_OBJECT_TYPE);
static final String VOID_NOARG_METHOD_DESCRIPTOR = Type.getMethodDescriptor(Type.VOID_TYPE);
protected JavaAdapterGeneratorBase() {
}
}