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Truffle is a multi-language framework for executing dynamic languages
that achieves high performance when combined with Graal.
/*
* Copyright (c) 2015, 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* The Universal Permissive License (UPL), Version 1.0
*
* Subject to the condition set forth below, permission is hereby granted to any
* person obtaining a copy of this software, associated documentation and/or
* data (collectively the "Software"), free of charge and under any and all
* copyright rights in the Software, and any and all patent rights owned or
* freely licensable by each licensor hereunder covering either (i) the
* unmodified Software as contributed to or provided by such licensor, or (ii)
* the Larger Works (as defined below), to deal in both
*
* (a) the Software, and
*
* (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
* one is included with the Software each a "Larger Work" to which the Software
* is contributed by such licensors),
*
* without restriction, including without limitation the rights to copy, create
* derivative works of, display, perform, and distribute the Software and make,
* use, sell, offer for sale, import, export, have made, and have sold the
* Software and the Larger Work(s), and to sublicense the foregoing rights on
* either these or other terms.
*
* This license is subject to the following condition:
*
* The above copyright notice and either this complete permission notice or at a
* minimum a reference to the UPL must be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package com.oracle.truffle.host;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import org.graalvm.collections.EconomicSet;
import com.oracle.truffle.api.CompilerDirectives;
import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
import com.oracle.truffle.api.TruffleOptions;
import com.oracle.truffle.api.interop.ArityException;
import com.oracle.truffle.api.interop.TruffleObject;
import com.oracle.truffle.api.interop.UnsupportedTypeException;
import com.oracle.truffle.host.HostAdapterFactory.AdapterResult;
final class HostInteropReflect {
static final Object[] EMPTY = {};
static final String STATIC_TO_CLASS = "class";
static final String CLASS_TO_STATIC = "static";
static final String ADAPTER_SUPER_MEMBER = "super";
static final String ADAPTER_DELEGATE_MEMBER = "this";
private HostInteropReflect() {
}
@CompilerDirectives.TruffleBoundary
static Class findInnerClass(Class clazz, String name) {
if (!TruffleOptions.AOT) { // GR-13208: SVM does not support Class.getClasses() yet
if (Modifier.isPublic(clazz.getModifiers())) {
for (Class t : clazz.getClasses()) {
// no support for non-static type members now
if (isStaticTypeOrInterface(t) && t.getSimpleName().equals(name)) {
return t;
}
}
}
}
return null;
}
private static boolean isSignature(String name) {
return name.length() > 0 && name.charAt(name.length() - 1) == ')' && name.indexOf('(') != -1;
}
private static boolean isJNIName(String name) {
return name.contains("__");
}
@CompilerDirectives.TruffleBoundary
static HostMethodDesc findMethod(HostContext context, Class clazz, String name, boolean onlyStatic) {
HostClassDesc classDesc = HostClassDesc.forClass(context, clazz);
HostMethodDesc foundMethod = classDesc.lookupMethod(name, onlyStatic);
if (foundMethod == null && isSignature(name)) {
foundMethod = classDesc.lookupMethodBySignature(name, onlyStatic);
}
if (foundMethod == null && isJNIName(name)) {
foundMethod = classDesc.lookupMethodByJNIName(name, onlyStatic);
}
return foundMethod;
}
@CompilerDirectives.TruffleBoundary
static HostFieldDesc findField(HostContext context, Class clazz, String name, boolean onlyStatic) {
HostClassDesc classDesc = HostClassDesc.forClass(context, clazz);
return classDesc.lookupField(name, onlyStatic);
}
private static Method functionalInterfaceMethod(Class functionalInterface) {
if (!functionalInterface.isInterface()) {
return null;
}
Method found = null;
for (Method m : functionalInterface.getMethods()) {
if (Modifier.isAbstract(m.getModifiers()) && !HostClassDesc.isObjectMethodOverride(m)) {
if (found != null) {
return null;
}
found = m;
}
}
return found;
}
@CompilerDirectives.TruffleBoundary
static boolean isFunctionalInterface(Class type) {
if (!type.isInterface() || type == TruffleObject.class) {
return false;
}
if (type.getAnnotation(FunctionalInterface.class) != null) {
return true;
} else if (functionalInterfaceMethod(type) != null) {
return true;
}
return false;
}
@TruffleBoundary
static boolean isReadable(HostObject object, Class clazz, String name, boolean onlyStatic, boolean isClass) {
HostClassDesc classDesc = HostClassDesc.forClass(object.context, clazz);
HostMethodDesc foundMethod = classDesc.lookupMethod(name, onlyStatic);
if (foundMethod != null) {
return true;
} else if (isSignature(name)) {
foundMethod = classDesc.lookupMethodBySignature(name, onlyStatic);
if (foundMethod != null) {
return true;
}
} else if (isJNIName(name)) {
foundMethod = classDesc.lookupMethodByJNIName(name, onlyStatic);
if (foundMethod != null) {
return true;
}
}
HostFieldDesc foundField = classDesc.lookupField(name, onlyStatic);
if (foundField != null) {
return true;
}
if (onlyStatic) {
if (STATIC_TO_CLASS.equals(name)) {
return true;
}
Class innerClass = findInnerClass(clazz, name);
if (innerClass != null) {
return true;
}
}
if (isClass) {
if (CLASS_TO_STATIC.equals(name)) {
return true;
}
}
return false;
}
@TruffleBoundary
static boolean isModifiable(HostObject object, Class clazz, String name, boolean onlyStatic) {
HostClassDesc classDesc = HostClassDesc.forClass(object.context, clazz);
HostFieldDesc foundField = classDesc.lookupField(name, onlyStatic);
if (foundField != null && !foundField.isFinal()) {
return true;
}
return false;
}
@TruffleBoundary
static boolean isInvokable(HostObject object, Class clazz, String name, boolean onlyStatic) {
HostClassDesc classDesc = HostClassDesc.forClass(object.context, clazz);
HostMethodDesc foundMethod = classDesc.lookupMethod(name, onlyStatic);
if (foundMethod != null) {
return true;
} else if (isSignature(name)) {
foundMethod = classDesc.lookupMethodBySignature(name, onlyStatic);
if (foundMethod != null) {
return true;
}
} else if (isJNIName(name)) {
foundMethod = classDesc.lookupMethodByJNIName(name, onlyStatic);
if (foundMethod != null) {
return true;
}
}
return false;
}
@TruffleBoundary
static boolean isInternal(HostObject object, Class clazz, String name, boolean onlyStatic) {
HostClassDesc classDesc = HostClassDesc.forClass(object.context, clazz);
HostMethodDesc foundMethod = classDesc.lookupMethod(name, onlyStatic);
if (foundMethod != null) {
return false;
} else if (isSignature(name)) {
foundMethod = classDesc.lookupMethodBySignature(name, onlyStatic);
if (foundMethod != null) {
return true;
}
} else if (isJNIName(name)) {
foundMethod = classDesc.lookupMethodByJNIName(name, onlyStatic);
if (foundMethod != null) {
return true;
}
}
return false;
}
@TruffleBoundary
static Object newAdapterInstance(HostContext hostContext, Class clazz, Object obj) throws IllegalArgumentException {
if (TruffleOptions.AOT) {
throw HostEngineException.unsupported(hostContext.access, "Unsupported target type.");
}
HostClassDesc classDesc = HostClassDesc.forClass(hostContext, clazz);
AdapterResult adapter = classDesc.getAdapter(hostContext);
if (!adapter.isAutoConvertible()) {
throw HostEngineException.illegalArgument(hostContext.access, "Cannot convert to " + clazz);
}
HostMethodDesc.SingleMethod adapterConstructor = adapter.getValueConstructor();
Object[] arguments = new Object[]{obj};
try {
return ((HostObject) HostExecuteNodeGen.getUncached().execute(adapterConstructor, null, arguments, hostContext)).obj;
} catch (UnsupportedTypeException e) {
throw HostInteropErrors.invalidExecuteArgumentType(hostContext, null, e.getSuppliedValues());
} catch (ArityException e) {
throw HostInteropErrors.invalidExecuteArity(hostContext, null, arguments, e.getExpectedMinArity(), e.getExpectedMaxArity(), e.getActualArity());
}
}
private static boolean isStaticTypeOrInterface(Class t) {
// anonymous classes are private, they should be eliminated elsewhere
return Modifier.isPublic(t.getModifiers()) && (t.isInterface() || t.isEnum() || Modifier.isStatic(t.getModifiers()));
}
static boolean isAbstractType(Class targetType) {
return targetType.isInterface() ||
(!TruffleOptions.AOT && (Modifier.isAbstract(targetType.getModifiers()) && !targetType.isArray() && !targetType.isPrimitive() && !Number.class.isAssignableFrom(targetType)));
}
static boolean isExtensibleType(Class targetType) {
return targetType.isInterface() ||
(!TruffleOptions.AOT && (!Modifier.isFinal(targetType.getModifiers()) && !targetType.isArray() && !targetType.isPrimitive() && !Number.class.isAssignableFrom(targetType)));
}
@CompilerDirectives.TruffleBoundary
static String[] findUniquePublicMemberNames(HostContext context, Class clazz, boolean isStatic, boolean isClass, boolean includeInternal) throws SecurityException {
HostClassDesc classDesc = HostClassDesc.forClass(context, clazz);
EconomicSet names = EconomicSet.create();
names.addAll(classDesc.getFieldNames(isStatic));
names.addAll(classDesc.getMethodNames(isStatic, includeInternal));
if (isStatic) {
names.add(STATIC_TO_CLASS);
if (!TruffleOptions.AOT) { // GR-13208: SVM does not support Class.getClasses() yet
if (Modifier.isPublic(clazz.getModifiers())) {
// no support for non-static member types now
for (Class t : clazz.getClasses()) {
if (!isStaticTypeOrInterface(t)) {
continue;
}
names.add(t.getSimpleName());
}
}
}
} else if (isClass) {
names.add(CLASS_TO_STATIC);
}
return names.toArray(new String[names.size()]);
}
@SuppressWarnings({"unchecked"})
static RuntimeException rethrow(Throwable ex) throws E {
throw (E) ex;
}
static String toNameAndSignature(Method m) {
StringBuilder sb = new StringBuilder();
sb.append(m.getName());
sb.append('(');
Class[] arr = m.getParameterTypes();
for (int i = 0; i < arr.length; i++) {
if (i != 0) {
sb.append(',');
}
sb.append(arr[i].getTypeName());
}
sb.append(')');
return sb.toString();
}
static String jniName(Method m) {
StringBuilder sb = new StringBuilder();
noUnderscore(sb, m.getName()).append("__");
appendType(sb, m.getReturnType());
Class[] arr = m.getParameterTypes();
for (int i = 0; i < arr.length; i++) {
appendType(sb, arr[i]);
}
return sb.toString();
}
private static StringBuilder noUnderscore(StringBuilder sb, String name) {
return sb.append(name.replace("_", "_1").replace('.', '_'));
}
private static void appendType(StringBuilder sb, Class type) {
if (type == Integer.TYPE) {
sb.append('I');
return;
}
if (type == Long.TYPE) {
sb.append('J');
return;
}
if (type == Double.TYPE) {
sb.append('D');
return;
}
if (type == Float.TYPE) {
sb.append('F');
return;
}
if (type == Byte.TYPE) {
sb.append('B');
return;
}
if (type == Boolean.TYPE) {
sb.append('Z');
return;
}
if (type == Short.TYPE) {
sb.append('S');
return;
}
if (type == Void.TYPE) {
sb.append('V');
return;
}
if (type == Character.TYPE) {
sb.append('C');
return;
}
if (type.isArray()) {
sb.append("_3");
appendType(sb, type.getComponentType());
return;
}
noUnderscore(sb.append('L'), type.getName());
sb.append("_2");
}
}