本文整理汇总了Java中jdk.internal.org.objectweb.asm.commons.InstructionAdapter.invokespecial方法的典型用法代码示例。如果您正苦于以下问题:Java InstructionAdapter.invokespecial方法的具体用法?Java InstructionAdapter.invokespecial怎么用?Java InstructionAdapter.invokespecial使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类jdk.internal.org.objectweb.asm.commons.InstructionAdapter
的用法示例。
在下文中一共展示了InstructionAdapter.invokespecial方法的13个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: generateDelegatingConstructor
import jdk.internal.org.objectweb.asm.commons.InstructionAdapter; //导入方法依赖的package包/类
private void generateDelegatingConstructor(final Constructor<?> ctor) {
final Type originalCtorType = Type.getType(ctor);
final Type[] argTypes = originalCtorType.getArgumentTypes();
// All constructors must be public, even if in the superclass they were protected.
final InstructionAdapter mv = new InstructionAdapter(cw.visitMethod(ACC_PUBLIC, INIT,
Type.getMethodDescriptor(originalCtorType.getReturnType(), argTypes), null, null));
mv.visitCode();
// Invoke super constructor with the same arguments.
mv.visitVarInsn(ALOAD, 0);
int offset = 1; // First arg is at position 1, after this.
for (final Type argType: argTypes) {
mv.load(offset, argType);
offset += argType.getSize();
}
mv.invokespecial(superClassName, INIT, originalCtorType.getDescriptor(), false);
endInitMethod(mv);
}
示例2: generateOverridingConstructorWithObjectParam
import jdk.internal.org.objectweb.asm.commons.InstructionAdapter; //导入方法依赖的package包/类
private void generateOverridingConstructorWithObjectParam(final InstructionAdapter mv, final Constructor<?> ctor, final String ctorDescriptor) {
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
final Class<?>[] argTypes = ctor.getParameterTypes();
int offset = 1; // First arg is at position 1, after this.
for (int i = 0; i < argTypes.length; ++i) {
final Type argType = Type.getType(argTypes[i]);
mv.load(offset, argType);
offset += argType.getSize();
}
mv.invokespecial(superClassName, INIT, ctorDescriptor, false);
mv.visitVarInsn(ALOAD, offset);
mv.visitInsn(ACONST_NULL);
mv.visitInsn(ACONST_NULL);
mv.invokestatic(SERVICES_CLASS_TYPE_NAME, "getHandle", GET_HANDLE_OBJECT_DESCRIPTOR, false);
endInitMethod(mv);
}
示例3: emitSuperCall
import jdk.internal.org.objectweb.asm.commons.InstructionAdapter; //导入方法依赖的package包/类
private void emitSuperCall(final InstructionAdapter mv, final Class<?> owner, final String name, final String methodDesc) {
mv.visitVarInsn(ALOAD, 0);
int nextParam = 1;
final Type methodType = Type.getMethodType(methodDesc);
for(final Type t: methodType.getArgumentTypes()) {
mv.load(nextParam, t);
nextParam += t.getSize();
}
// default method - non-abstract, interface method
if (Modifier.isInterface(owner.getModifiers())) {
mv.invokespecial(Type.getInternalName(owner), name, methodDesc, false);
} else {
mv.invokespecial(superClassName, name, methodDesc, false);
}
mv.areturn(methodType.getReturnType());
}
示例4: emitSuperCall
import jdk.internal.org.objectweb.asm.commons.InstructionAdapter; //导入方法依赖的package包/类
private int emitSuperCall(final InstructionAdapter mv, final Class<?> owner, final String name, final String methodDesc, final boolean constructor) {
mv.visitVarInsn(ALOAD, 0);
int nextParam = 1;
final Type methodType = Type.getMethodType(methodDesc);
for(final Type t: methodType.getArgumentTypes()) {
mv.load(nextParam, t);
nextParam += t.getSize();
}
// default method - non-abstract, interface method
if (!constructor && Modifier.isInterface(owner.getModifiers())) {
// we should call default method on the immediate "super" type - not on (possibly)
// the indirectly inherited interface class!
final Class<?> superType = findInvokespecialOwnerFor(owner);
mv.visitMethodInsn(INVOKESPECIAL, Type.getInternalName(superType), name, methodDesc,
Modifier.isInterface(superType.getModifiers()));
} else {
mv.invokespecial(superClassName, name, methodDesc, false);
}
return nextParam;
}
示例5: emitSuperCall
import jdk.internal.org.objectweb.asm.commons.InstructionAdapter; //导入方法依赖的package包/类
private int emitSuperCall(final InstructionAdapter mv, final Class<?> owner, final String name, final String methodDesc, final boolean constructor) {
mv.visitVarInsn(ALOAD, 0);
int nextParam = 1;
final Type methodType = Type.getMethodType(methodDesc);
for(final Type t: methodType.getArgumentTypes()) {
mv.load(nextParam, t);
nextParam += t.getSize();
}
// default method - non-abstract, interface method
if (!constructor && Modifier.isInterface(owner.getModifiers())) {
// we should call default method on the immediate "super" type - not on (possibly)
// the indirectly inherited interface class!
mv.invokespecial(Type.getInternalName(findInvokespecialOwnerFor(owner)), name, methodDesc, false);
} else {
mv.invokespecial(superClassName, name, methodDesc, false);
}
return nextParam;
}
示例6: generateDelegatingConstructor
import jdk.internal.org.objectweb.asm.commons.InstructionAdapter; //导入方法依赖的package包/类
private void generateDelegatingConstructor(final Constructor<?> ctor) {
final Type originalCtorType = Type.getType(ctor);
final Type[] argTypes = originalCtorType.getArgumentTypes();
// All constructors must be public, even if in the superclass they were protected.
final InstructionAdapter mv = new InstructionAdapter(cw.visitMethod(ACC_PUBLIC |
(ctor.isVarArgs() ? ACC_VARARGS : 0), INIT,
Type.getMethodDescriptor(originalCtorType.getReturnType(), argTypes), null, null));
mv.visitCode();
// Invoke super constructor with the same arguments.
mv.visitVarInsn(ALOAD, 0);
int offset = 1; // First arg is at position 1, after this.
for (final Type argType: argTypes) {
mv.load(offset, argType);
offset += argType.getSize();
}
mv.invokespecial(superClassName, INIT, originalCtorType.getDescriptor(), false);
endInitMethod(mv);
}
示例7: emitSuperCall
import jdk.internal.org.objectweb.asm.commons.InstructionAdapter; //导入方法依赖的package包/类
private void emitSuperCall(final InstructionAdapter mv, final Class<?> owner, final String name, final String methodDesc) {
mv.visitVarInsn(ALOAD, 0);
int nextParam = 1;
final Type methodType = Type.getMethodType(methodDesc);
for(final Type t: methodType.getArgumentTypes()) {
mv.load(nextParam, t);
nextParam += t.getSize();
}
// default method - non-abstract, interface method
if (Modifier.isInterface(owner.getModifiers())) {
// we should call default method on the immediate "super" type - not on (possibly)
// the indirectly inherited interface class!
mv.invokespecial(Type.getInternalName(findInvokespecialOwnerFor(owner)), name, methodDesc, false);
} else {
mv.invokespecial(superClassName, name, methodDesc, false);
}
mv.areturn(methodType.getReturnType());
}
示例8: generateDelegatingConstructor
import jdk.internal.org.objectweb.asm.commons.InstructionAdapter; //导入方法依赖的package包/类
private void generateDelegatingConstructor(final Constructor<?> ctor) {
final Type originalCtorType = Type.getType(ctor);
final Type[] argTypes = originalCtorType.getArgumentTypes();
// All constructors must be public, even if in the superclass they were protected.
final InstructionAdapter mv = new InstructionAdapter(cw.visitMethod(ACC_PUBLIC, INIT,
Type.getMethodDescriptor(originalCtorType.getReturnType(), argTypes), null, null));
mv.visitCode();
// Invoke super constructor with the same arguments.
mv.visitVarInsn(ALOAD, 0);
int offset = 1; // First arg is at position 1, after this.
for (Type argType: argTypes) {
mv.load(offset, argType);
offset += argType.getSize();
}
mv.invokespecial(superClassName, INIT, originalCtorType.getDescriptor());
endInitMethod(mv);
}
示例9: generateFinalizerDelegate
import jdk.internal.org.objectweb.asm.commons.InstructionAdapter; //导入方法依赖的package包/类
private void generateFinalizerDelegate(final String finalizerDelegateName) {
// Generate a delegate that will be invoked from the no-permission trampoline. Note it can be private, as we'll
// refer to it with a MethodHandle constant pool entry in the overridden finalize() method (see
// generateFinalizerOverride()).
final InstructionAdapter mv = new InstructionAdapter(cw.visitMethod(ACC_PRIVATE | ACC_STATIC,
finalizerDelegateName, Type.getMethodDescriptor(Type.VOID_TYPE, OBJECT_TYPE), null, null));
// Simply invoke super.finalize()
mv.visitVarInsn(ALOAD, 0);
mv.checkcast(Type.getType(generatedClassName));
mv.invokespecial(superClassName, "finalize", Type.getMethodDescriptor(Type.VOID_TYPE), false);
mv.visitInsn(RETURN);
endMethod(mv);
}
示例10: generateFinalizerDelegate
import jdk.internal.org.objectweb.asm.commons.InstructionAdapter; //导入方法依赖的package包/类
private void generateFinalizerDelegate() {
// Generate a delegate that will be invoked from the no-permission trampoline. Note it can be private, as we'll
// refer to it with a MethodHandle constant pool entry in the overridden finalize() method (see
// generateFinalizerOverride()).
final InstructionAdapter mv = new InstructionAdapter(cw.visitMethod(ACC_PRIVATE | ACC_STATIC,
FINALIZER_DELEGATE_NAME, FINALIZER_DELEGATE_METHOD_DESCRIPTOR, null, null));
// Simply invoke super.finalize()
mv.visitVarInsn(ALOAD, 0);
mv.checkcast(Type.getType(generatedClassName));
mv.invokespecial(superClassName, "finalize", VOID_METHOD_DESCRIPTOR, false);
mv.visitInsn(RETURN);
endMethod(mv);
}
示例11: emitSuperCall
import jdk.internal.org.objectweb.asm.commons.InstructionAdapter; //导入方法依赖的package包/类
private void emitSuperCall(final InstructionAdapter mv, final String name, final String methodDesc) {
mv.visitVarInsn(ALOAD, 0);
int nextParam = 1;
final Type methodType = Type.getMethodType(methodDesc);
for(final Type t: methodType.getArgumentTypes()) {
mv.load(nextParam, t);
nextParam += t.getSize();
}
mv.invokespecial(superClassName, name, methodDesc);
mv.areturn(methodType.getReturnType());
}
示例12: generateOverridingConstructor
import jdk.internal.org.objectweb.asm.commons.InstructionAdapter; //导入方法依赖的package包/类
/**
* Generates a constructor for the instance adapter class. This constructor will take the same arguments as the supertype
* constructor passed as the argument here, and delegate to it. However, it will take an additional argument of
* either ScriptObject or ScriptFunction type (based on the value of the "fromFunction" parameter), and initialize
* all the method handle fields of the adapter instance with functions from the script object (or the script
* function itself, if that's what's passed). There is one method handle field in the adapter class for every method
* that can be implemented or overridden; the name of every field is same as the name of the method, with a number
* suffix that makes it unique in case of overloaded methods. The generated constructor will invoke
* {@link #getHandle(ScriptFunction, MethodType, boolean)} or {@link #getHandle(Object, String, MethodType,
* boolean)} to obtain the method handles; these methods make sure to add the necessary conversions and arity
* adjustments so that the resulting method handles can be invoked from generated methods using {@code invokeExact}.
* The constructor that takes a script function will only initialize the methods with the same name as the single
* abstract method. The constructor will also store the Nashorn global that was current at the constructor
* invocation time in a field named "global". The generated constructor will be public, regardless of whether the
* supertype constructor was public or protected. The generated constructor will not be variable arity, even if the
* supertype constructor was.
* @param ctor the supertype constructor that is serving as the base for the generated constructor.
* @param fromFunction true if we're generating a constructor that initializes SAM types from a single
* ScriptFunction passed to it, false if we're generating a constructor that initializes an arbitrary type from a
* ScriptObject passed to it.
*/
private void generateOverridingConstructor(final Constructor<?> ctor, final boolean fromFunction) {
final Type originalCtorType = Type.getType(ctor);
final Type[] originalArgTypes = originalCtorType.getArgumentTypes();
final int argLen = originalArgTypes.length;
final Type[] newArgTypes = new Type[argLen + 1];
// Insert ScriptFunction|Object as the last argument to the constructor
final Type extraArgumentType = fromFunction ? SCRIPT_FUNCTION_TYPE : OBJECT_TYPE;
newArgTypes[argLen] = extraArgumentType;
System.arraycopy(originalArgTypes, 0, newArgTypes, 0, argLen);
// All constructors must be public, even if in the superclass they were protected.
// Existing super constructor <init>(this, args...) triggers generating <init>(this, scriptObj, args...).
final InstructionAdapter mv = new InstructionAdapter(cw.visitMethod(ACC_PUBLIC, INIT,
Type.getMethodDescriptor(originalCtorType.getReturnType(), newArgTypes), null, null));
mv.visitCode();
// First, invoke super constructor with original arguments. If the form of the constructor we're generating is
// <init>(this, args..., scriptFn), then we're invoking super.<init>(this, args...).
mv.visitVarInsn(ALOAD, 0);
final Class<?>[] argTypes = ctor.getParameterTypes();
int offset = 1; // First arg is at position 1, after this.
for (int i = 0; i < argLen; ++i) {
final Type argType = Type.getType(argTypes[i]);
mv.load(offset, argType);
offset += argType.getSize();
}
mv.invokespecial(superClassName, INIT, originalCtorType.getDescriptor());
// Get a descriptor to the appropriate "JavaAdapterFactory.getHandle" method.
final String getHandleDescriptor = fromFunction ? GET_HANDLE_FUNCTION_DESCRIPTOR : GET_HANDLE_OBJECT_DESCRIPTOR;
// Assign MethodHandle fields through invoking getHandle()
for (final MethodInfo mi : methodInfos) {
mv.visitVarInsn(ALOAD, 0);
if (fromFunction && !mi.getName().equals(samName)) {
// Constructors initializing from a ScriptFunction only initialize methods with the SAM name.
// NOTE: if there's a concrete overloaded method sharing the SAM name, it'll be overriden too. This
// is a deliberate design choice. All other method handles are initialized to null.
mv.visitInsn(ACONST_NULL);
} else {
mv.visitVarInsn(ALOAD, offset);
if(!fromFunction) {
mv.aconst(mi.getName());
}
mv.aconst(Type.getMethodType(mi.type.toMethodDescriptorString()));
mv.invokestatic(SERVICES_CLASS_TYPE_NAME, "getHandle", getHandleDescriptor);
}
mv.putfield(generatedClassName, mi.methodHandleFieldName, METHOD_HANDLE_TYPE_DESCRIPTOR);
}
// Assign "this.global = Context.getGlobal()"
mv.visitVarInsn(ALOAD, 0);
invokeGetGlobalWithNullCheck(mv);
mv.putfield(generatedClassName, GLOBAL_FIELD_NAME, SCRIPT_OBJECT_TYPE_DESCRIPTOR);
endInitMethod(mv);
}
示例13: generateOverridingConstructor
import jdk.internal.org.objectweb.asm.commons.InstructionAdapter; //导入方法依赖的package包/类
/**
* Generates a constructor for the adapter class. This constructor will take the same arguments as the supertype
* constructor passed as the argument here, and delegate to it. However, it will take an additional argument of
* either ScriptObject or ScriptFunction type (based on the value of the "fromFunction" parameter), and initialize
* all the method handle fields of the adapter instance with functions from the script object (or the script
* function itself, if that's what's passed). There is one method handle field in the adapter class for every method
* that can be implemented or overridden; the name of every field is same as the name of the method, with a number
* suffix that makes it unique in case of overloaded methods. The generated constructor will invoke
* {@link #getHandle(ScriptFunction, MethodType, boolean)} or {@link #getHandle(Object, String, MethodType,
* boolean)} to obtain the method handles; these methods make sure to add the necessary conversions and arity
* adjustments so that the resulting method handles can be invoked from generated methods using {@code invokeExact}.
* The constructor that takes a script function will only initialize the methods with the same name as the single
* abstract method. The constructor will also store the Nashorn global that was current at the constructor
* invocation time in a field named "global". The generated constructor will be public, regardless of whether the
* supertype constructor was public or protected. The generated constructor will not be variable arity, even if the
* supertype constructor was.
* @param ctor the supertype constructor that is serving as the base for the generated constructor.
* @param fromFunction true if we're generating a constructor that initializes SAM types from a single
* ScriptFunction passed to it, false if we're generating a constructor that initializes an arbitrary type from a
* ScriptObject passed to it.
*/
private void generateOverridingConstructor(final Constructor<?> ctor, final boolean fromFunction) {
final Type originalCtorType = Type.getType(ctor);
final Type[] originalArgTypes = originalCtorType.getArgumentTypes();
final int argLen = originalArgTypes.length;
final Type[] newArgTypes = new Type[argLen + 1];
// Insert ScriptFunction|Object as the last argument to the constructor
final Type extraArgumentType = fromFunction ? SCRIPT_FUNCTION_TYPE : OBJECT_TYPE;
newArgTypes[argLen] = extraArgumentType;
System.arraycopy(originalArgTypes, 0, newArgTypes, 0, argLen);
// All constructors must be public, even if in the superclass they were protected.
// Existing super constructor <init>(this, args...) triggers generating <init>(this, scriptObj, args...).
final InstructionAdapter mv = new InstructionAdapter(cw.visitMethod(ACC_PUBLIC, INIT,
Type.getMethodDescriptor(originalCtorType.getReturnType(), newArgTypes), null, null));
mv.visitCode();
// First, invoke super constructor with original arguments. If the form of the constructor we're generating is
// <init>(this, args..., scriptFn), then we're invoking super.<init>(this, args...).
mv.visitVarInsn(ALOAD, 0);
final Class<?>[] argTypes = ctor.getParameterTypes();
int offset = 1; // First arg is at position 1, after this.
for (int i = 0; i < argLen; ++i) {
final Type argType = Type.getType(argTypes[i]);
mv.load(offset, argType);
offset += argType.getSize();
}
mv.invokespecial(superClassName, INIT, originalCtorType.getDescriptor());
// Get a descriptor to the appropriate "JavaAdapterFactory.getHandle" method.
final String getHandleDescriptor = fromFunction ? GET_HANDLE_FUNCTION_DESCRIPTOR : GET_HANDLE_OBJECT_DESCRIPTOR;
// Assign MethodHandle fields through invoking getHandle()
for (final MethodInfo mi : methodInfos) {
mv.visitVarInsn(ALOAD, 0);
if (fromFunction && !mi.getName().equals(samName)) {
// Constructors initializing from a ScriptFunction only initialize methods with the SAM name.
// NOTE: if there's a concrete overloaded method sharing the SAM name, it'll be overriden too. This
// is a deliberate design choice. All other method handles are initialized to null.
mv.visitInsn(ACONST_NULL);
} else {
mv.visitVarInsn(ALOAD, offset);
if(!fromFunction) {
mv.aconst(mi.getName());
}
mv.aconst(Type.getMethodType(mi.type.toMethodDescriptorString()));
mv.invokestatic(SERVICES_CLASS_TYPE_NAME, "getHandle", getHandleDescriptor);
}
mv.putfield(generatedClassName, mi.methodHandleInstanceFieldName, METHOD_HANDLE_TYPE_DESCRIPTOR);
}
// Assign "this.global = Context.getGlobal()"
mv.visitVarInsn(ALOAD, 0);
invokeGetGlobalWithNullCheck(mv);
mv.putfield(generatedClassName, GLOBAL_FIELD_NAME, SCRIPT_OBJECT_TYPE_DESCRIPTOR);
endInitMethod(mv);
}