Examples with Type org.objectweb.asm.Type used on opensource projects

Example 56 with Type

use of org.objectweb.asm.Type in project pinpoint by naver.

the class ASMMethodVariables method loadArg.

void loadArg(final InsnList instructions, Type[] argumentTypes, int i) {
    final int index = getArgIndex(argumentTypes, i);
    final Type type = argumentTypes[i];
    instructions.add(new VarInsnNode(type.getOpcode(Opcodes.ILOAD), index));
}

Example 57 with Type

use of org.objectweb.asm.Type in project pinpoint by naver.

the class ASMClassNodeAdapter method addSetterMethod.

public void addSetterMethod(final String methodName, final ASMFieldNodeAdapter fieldNode) {
    if (methodName == null || fieldNode == null) {
        throw new IllegalArgumentException("method name or fieldNode annotation must not be null.");
    }
    // void is V.
    final String desc = "(" + fieldNode.getDesc() + ")V";
    final MethodNode methodNode = new MethodNode(Opcodes.ACC_PUBLIC, methodName, desc, null, null);
    if (methodNode.instructions == null) {
        methodNode.instructions = new InsnList();
    }
    final InsnList instructions = methodNode.instructions;
    // load this.
    instructions.add(new VarInsnNode(Opcodes.ALOAD, 0));
    final Type type = Type.getType(fieldNode.getDesc());
    // put field.
    instructions.add(new VarInsnNode(type.getOpcode(Opcodes.ILOAD), 1));
    instructions.add(new FieldInsnNode(Opcodes.PUTFIELD, classNode.name, fieldNode.getName(), fieldNode.getDesc()));
    // return.
    instructions.add(new InsnNode(Opcodes.RETURN));
    if (this.classNode.methods == null) {
        this.classNode.methods = new ArrayList<MethodNode>();
    }
    this.classNode.methods.add(methodNode);
}

Example 58 with Type

use of org.objectweb.asm.Type in project android_frameworks_base by ResurrectionRemix.

the class DelegateMethodAdapter method generateDelegateCode.

/**
     * Generates the new code for the method.
     * <p/>
     * For native methods, this must be invoked directly by {@link DelegateClassAdapter}
     * (since they have no code to visit).
     * <p/>
     * Otherwise for non-native methods the {@link DelegateClassAdapter} simply needs to
     * return this instance of {@link DelegateMethodAdapter} and let the normal visitor pattern
     * invoke it as part of the {@link ClassReader#accept(ClassVisitor, int)} workflow and then
     * this method will be invoked from {@link MethodVisitor#visitEnd()}.
     */
public void generateDelegateCode() {
    /*
         * The goal is to generate a call to a static delegate method.
         * If this method is non-static, the first parameter will be 'this'.
         * All the parameters must be passed and then the eventual return type returned.
         *
         * Example, let's say we have a method such as
         *   public void myMethod(int a, Object b, ArrayList<String> c) { ... }
         *
         * We'll want to create a body that calls a delegate method like this:
         *   TheClass_Delegate.myMethod(this, a, b, c);
         *
         * If the method is non-static and the class name is an inner class (e.g. has $ in its
         * last segment), we want to push the 'this' of the outer class first:
         *   OuterClass_InnerClass_Delegate.myMethod(
         *     OuterClass.this,
         *     OuterClass$InnerClass.this,
         *     a, b, c);
         *
         * Only one level of inner class is supported right now, for simplicity and because
         * we don't need more.
         *
         * The generated class name is the current class name with "_Delegate" appended to it.
         * One thing to realize is that we don't care about generics -- since generic types
         * are erased at build time, they have no influence on the method name being called.
         */
    // Add our annotation
    AnnotationVisitor aw = mDelWriter.visitAnnotation(Type.getObjectType(Type.getInternalName(LayoutlibDelegate.class)).toString(), // visible at runtime
    true);
    if (aw != null) {
        aw.visitEnd();
    }
    mDelWriter.visitCode();
    if (mDelegateLineNumber != null) {
        Object[] p = mDelegateLineNumber;
        mDelWriter.visitLineNumber((Integer) p[0], (Label) p[1]);
    }
    ArrayList<Type> paramTypes = new ArrayList<>();
    String delegateClassName = mClassName + DELEGATE_SUFFIX;
    boolean pushedArg0 = false;
    int maxStack = 0;
    // Check if the last segment of the class name has inner an class.
    // Right now we only support one level of inner classes.
    Type outerType = null;
    int slash = mClassName.lastIndexOf('/');
    int dol = mClassName.lastIndexOf('$');
    if (dol != -1 && dol > slash && dol == mClassName.indexOf('$')) {
        String outerClass = mClassName.substring(0, dol);
        outerType = Type.getObjectType(outerClass);
        // Change a delegate class name to "com/foo/Outer_Inner_Delegate"
        delegateClassName = delegateClassName.replace('$', '_');
    }
    // by the 'this' of any outer class, if any.
    if (!mIsStatic) {
        if (outerType != null && !mIsStaticInnerClass) {
            // The first-level inner class has a package-protected member called 'this$0'
            // that points to the outer class.
            // Push this.getField("this$0") on the call stack.
            // var 0 = this
            mDelWriter.visitVarInsn(Opcodes.ALOAD, 0);
            mDelWriter.visitFieldInsn(Opcodes.GETFIELD, // class where the field is defined
            mClassName, // field name
            "this$0", // type of the field
            outerType.getDescriptor());
            maxStack++;
            paramTypes.add(outerType);
        }
        // Push "this" for the instance method, which is always ALOAD 0
        mDelWriter.visitVarInsn(Opcodes.ALOAD, 0);
        maxStack++;
        pushedArg0 = true;
        paramTypes.add(Type.getObjectType(mClassName));
    }
    // Push all other arguments. Start at arg 1 if we already pushed 'this' above.
    Type[] argTypes = Type.getArgumentTypes(mDesc);
    int maxLocals = pushedArg0 ? 1 : 0;
    for (Type t : argTypes) {
        int size = t.getSize();
        mDelWriter.visitVarInsn(t.getOpcode(Opcodes.ILOAD), maxLocals);
        maxLocals += size;
        maxStack += size;
        paramTypes.add(t);
    }
    // Construct the descriptor of the delegate based on the parameters
    // we pushed on the call stack. The return type remains unchanged.
    String desc = Type.getMethodDescriptor(Type.getReturnType(mDesc), paramTypes.toArray(new Type[paramTypes.size()]));
    // Invoke the static delegate
    mDelWriter.visitMethodInsn(Opcodes.INVOKESTATIC, delegateClassName, mMethodName, desc, false);
    Type returnType = Type.getReturnType(mDesc);
    mDelWriter.visitInsn(returnType.getOpcode(Opcodes.IRETURN));
    mDelWriter.visitMaxs(maxStack, maxLocals);
    mDelWriter.visitEnd();
    // For debugging now. Maybe we should collect these and store them in
    // a text file for helping create the delegates. We could also compare
    // the text file to a golden and break the build on unsupported changes
    // or regressions. Even better we could fancy-print something that looks
    // like the expected Java method declaration.
    mLog.debug("Delegate: %1$s # %2$s %3$s", delegateClassName, mMethodName, desc);
}

Example 59 with Type

use of org.objectweb.asm.Type in project android_frameworks_base by ResurrectionRemix.

the class TransformClassAdapter method visitMethod.

/* Visits a method. */
@Override
public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
    if (mDeleteReturns != null) {
        Type t = Type.getReturnType(desc);
        if (t.getSort() == Type.OBJECT) {
            String returnType = t.getInternalName();
            if (returnType != null) {
                if (mDeleteReturns.contains(returnType)) {
                    return null;
                }
            }
        }
    }
    String methodSignature = mClassName.replace('/', '.') + "#" + name;
    // remove final
    access = access & ~Opcodes.ACC_FINAL;
    // and don't try to stub interfaces nor abstract non-native methods.
    if (!mIsInterface && ((access & (Opcodes.ACC_ABSTRACT | Opcodes.ACC_NATIVE)) != Opcodes.ACC_ABSTRACT) && (mStubAll || (access & Opcodes.ACC_NATIVE) != 0) || mStubMethods.contains(methodSignature)) {
        boolean isStatic = (access & Opcodes.ACC_STATIC) != 0;
        boolean isNative = (access & Opcodes.ACC_NATIVE) != 0;
        // remove abstract, final and native
        access = access & ~(Opcodes.ACC_ABSTRACT | Opcodes.ACC_FINAL | Opcodes.ACC_NATIVE);
        String invokeSignature = methodSignature + desc;
        mLog.debug("  Stub: %s (%s)", invokeSignature, isNative ? "native" : "");
        MethodVisitor mw = super.visitMethod(access, name, desc, signature, exceptions);
        return new StubMethodAdapter(mw, name, returnType(desc), invokeSignature, isStatic, isNative);
    } else {
        mLog.debug("  Keep: %s %s", name, desc);
        return super.visitMethod(access, name, desc, signature, exceptions);
    }
}

Example 60 with Type

use of org.objectweb.asm.Type in project android_frameworks_base by DirtyUnicorns.

the class AbstractClassAdapter method renameMethodDesc.

/**
     * Renames a method descriptor, i.e. applies renameType to all arguments and to the
     * return value.
     */
String renameMethodDesc(String desc) {
    if (desc == null) {
        return null;
    }
    Type[] args = Type.getArgumentTypes(desc);
    StringBuilder sb = new StringBuilder("(");
    for (Type arg : args) {
        String name = renameType(arg);
        sb.append(name);
    }
    sb.append(')');
    Type ret = Type.getReturnType(desc);
    String name = renameType(ret);
    sb.append(name);
    return sb.toString();
}