Example usage for org.objectweb.asm Opcodes INVOKESPECIAL

Introduction

In this page you can find the example usage for org.objectweb.asm Opcodes INVOKESPECIAL.

Prototype

int INVOKESPECIAL

To view the source code for org.objectweb.asm Opcodes INVOKESPECIAL.

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Usage

From source file:test.GenSourceDebugExtension.java

License:Open Source License

public static byte[] dump() {
    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv;/*from   w  w  w .j a v  a  2 s  .  c  o m*/

    cw.visit(52, Opcodes.ACC_PUBLIC + Opcodes.ACC_SUPER, "sourcedebugextension/Test", null, "java/lang/Object",
            null);

    // This is the important part for the test - it's an example SourceDebugExtension found
    // in Clojure.
    cw.visitSource("dispatch.clj",
            "SMAP\ndispatch.java\nClojure\n*S Clojure\n*F\n+ 1 dispatch.clj\nclojure/pprint/dispatch.clj\n*L\n144#1,8:144\n*E");

    {
        mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
        mv.visitInsn(Opcodes.RETURN);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(Opcodes.ACC_PUBLIC + Opcodes.ACC_STATIC, "main", "([Ljava/lang/String;)V", null,
                null);
        mv.visitCode();
        mv.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/System", "err", "Ljava/io/PrintStream;");
        mv.visitLdcInsn("Hello");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V",
                false);
        mv.visitInsn(Opcodes.RETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    cw.visitEnd();

    return cw.toByteArray();
}

From source file:test.GenZipWithEntries.java

License:Open Source License

public static byte[] dump(String name) {
    ClassWriter cw = new ClassWriter(0);
    cw.visit(52, Opcodes.ACC_PUBLIC + Opcodes.ACC_SUPER, name, null, "java/lang/Object", null);
    {//  w  w w  . j ava 2s.  com
        MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
        mv.visitInsn(Opcodes.RETURN);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    cw.visitEnd();
    return cw.toByteArray();
}

From source file:uk.ac.cam.cl.dtg.teaching.programmingtest.java.bytecode.InstructionCounterMethodAdapter.java

License:Open Source License

/** Deal with: INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC, INVOKEINTERFACE. */
@Override//from w ww .j  a  v a2 s  .  co m
public void visitMethodInsn(int opcode, String owner, String name, String desc, boolean itf) {
    mv.visitMethodInsn(opcode, owner, name, desc, itf);
    if (owner.equals("sun/misc/Unsafe")) {
        throw new InstrumentationUnsafeError();
    }
    if (opcode == Opcodes.INVOKESPECIAL && name.equals("<init>") && waitForInit) {
        waitForInit = false;
        increment(INCREMENT_ALLOCATION);
    }
}

From source file:uk.co.unclealex.executable.generator.jar.JarServiceImplTest.java

License:Apache License

protected byte[] generateClass(String className) {
    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv;//from  www.  j a  v  a  2  s  . c  om

    cw.visit(Opcodes.V1_7, Opcodes.ACC_PUBLIC + Opcodes.ACC_SUPER, className.replace('.', '/'), null,
            "java/lang/Object", null);

    mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, null);
    mv.visitCode();
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
    mv.visitInsn(Opcodes.RETURN);
    mv.visitMaxs(1, 1);
    mv.visitEnd();
    mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "execute", "()Ljava/lang/String;", null, null);
    mv.visitCode();
    mv.visitLdcInsn(className);
    mv.visitInsn(Opcodes.ARETURN);
    mv.visitMaxs(1, 1);
    mv.visitEnd();
    cw.visitEnd();

    return cw.toByteArray();

}

From source file:xt.to.cs.mixmaster.MixMaster.java

@SuppressWarnings("unchecked")
public void generate() {
    cv.visit(version, access, name, signature, superName, interfaces.toArray(new String[] {}));

    for (ClassNode node : nodes)
        node.accept(mixAdapter);/*w w  w  .  jav a 2s . co m*/

    String[] exceptions = new String[initNode.exceptions.size()];
    initNode.exceptions.toArray(exceptions);
    MethodVisitor mv = cv.visitMethod(access, initNode.name, initNode.desc, initNode.signature, exceptions);

    initNode.accept(new AdviceAdapter(mv, initNode.access, initNode.name, initNode.desc) {
        @Override
        protected void onMethodEnter() {
            for (String initMethod : initMethods) {
                visitIntInsn(ALOAD, 0);
                visitMethodInsn(Opcodes.INVOKESPECIAL, MixMaster.this.name, initMethod, initNode.desc);
            }
        }
    });

    cv.visitEnd();
}