Example usage for org.objectweb.asm Label Label

Introduction

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

Prototype

public Label() 

Source Link

Document

Constructs a new label.

Usage

From source file:com.googlecode.dex2jar.v3.V3CodeAdapter.java

License:Apache License

private static LabelStmt toLabelStmt(DexLabel label) {
    LabelStmt ls = (LabelStmt) label.info;
    if (ls == null) {
        ls = new LabelStmt(new Label());
        label.info = ls;/*  ww  w  .  j ava 2s.  co  m*/
    }
    return ls;
}

---

From source file:com.ibm.layout.GenArray1D.java

License:Open Source License

/**
 * Generate bytecodes for runtime class//w w  w .j ava  2  s  .  com
 * 
 * @return byte array containing bytecodes for runtime class
 * @throws Exception
 */
public byte[] genBytecode() throws Exception {
    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv;
    FieldVisitor fv;
    final boolean itf = false;

    /* If user-defined array class is supplied, use it as superclass, and use its name instead of generating it */
    cw.visit(V1_8, ACC_FINAL + ACC_SUPER, arrayImplClassName, arrayInterfaceClassSig, "java/lang/Object",
            new String[] { arrayInterfaceClassName });
    {
        fv = cw.visitField(ACC_PROTECTED + ACC_FINAL, "elementSize", "J", null, null);
        fv.visitEnd();
    }
    {
        fv = cw.visitField(ACC_PRIVATE + ACC_FINAL, "arraySize", "J", null, null);
        fv.visitEnd();
    }
    {
        fv = cw.visitField(ACC_PROTECTED + ACC_FINAL, "length", "J", null, null);
        fv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PROTECTED, "<init>", "(JJ)V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "length", "J");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "elementSize", "J");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitInsn(LMUL);
        mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "arraySize", "J");
        mv.visitInsn(RETURN);
        mv.visitMaxs(5, 5);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "sizeof", "()J", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "arraySize", "J");
        mv.visitInsn(LRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, "java/lang/StringBuffer");
        mv.visitInsn(DUP);
        mv.visitLdcInsn("[");
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuffer", "<init>", "(Ljava/lang/String;)V", false);
        mv.visitVarInsn(ASTORE, 1);
        mv.visitInsn(LCONST_0);
        mv.visitVarInsn(LSTORE, 2);
        Label l0 = new Label();
        mv.visitJumpInsn(GOTO, l0);
        Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitFrame(Opcodes.F_APPEND, 2, new Object[] { "java/lang/StringBuffer", Opcodes.LONG }, 0, null);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
        mv.visitInsn(DUP);
        mv.visitLdcInsn(" ");
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(Ljava/lang/String;)V", false);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(J)L" + elementInterfaceClassName + ";",
                false);
        mv.visitMethodInsn(INVOKEINTERFACE, elementInterfaceClassName, "toString", "()Ljava/lang/String;",
                true);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "append",
                "(Ljava/lang/String;)Ljava/lang/StringBuffer;", false);
        mv.visitInsn(POP);
        mv.visitVarInsn(LLOAD, 2);
        mv.visitInsn(LCONST_1);
        mv.visitInsn(LADD);
        mv.visitVarInsn(LSTORE, 2);
        mv.visitLabel(l0);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitVarInsn(LLOAD, 2);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "length", "J");
        mv.visitInsn(LCMP);
        mv.visitJumpInsn(IFLT, l1);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitLdcInsn(" ]");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "append",
                "(Ljava/lang/String;)Ljava/lang/StringBuffer;", false);
        mv.visitInsn(POP);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "toString", "()Ljava/lang/String;", false);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(5, 4);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "getComponentType", "()Ljava/lang/Class;",
                "()Ljava/lang/Class<*>;", null);
        mv.visitCode();
        mv.visitLdcInsn(Type.getType("L" + elementInterfaceClassName + ";"));
        mv.visitInsn(ARETURN);
        mv.visitMaxs(1, 0);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "getLength", "()J", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "length", "J");
        mv.visitInsn(LRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "at", "(J)L" + elementInterfaceClassName + ";", null, null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, elementImplClassName);
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, elementImplClassName, "<init>", "()V", itf);
        mv.visitVarInsn(ASTORE, 3);
        mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
        mv.visitInsn(DUP);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, this.arrayImplClassName, "location", "Lcom/ibm/layout/Location;");
        mv.visitVarInsn(LLOAD, 1);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "sizeof", "()J", itf);
        mv.visitInsn(LMUL);
        mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V",
                itf);
        mv.visitVarInsn(ASTORE, 4);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitVarInsn(ALOAD, 4);
        mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "bindLocation", "(Lcom/ibm/layout/Location;)V",
                itf);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(7, 5);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "range", "(JJ)Lcom/ibm/layout/Array1D;",
                "(JJ)Lcom/ibm/layout/Array1D<" + elementInterfaceClassName + ";>;", null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, arrayImplClassName);
        mv.visitInsn(DUP);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, this.arrayImplClassName, "elementSize", "J");
        mv.visitMethodInsn(INVOKESPECIAL, this.arrayImplClassName, "<init>", "(JJ)V", itf);
        mv.visitVarInsn(ASTORE, 5);
        mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
        mv.visitInsn(DUP);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "location", "Lcom/ibm/layout/Location;");
        mv.visitVarInsn(LLOAD, 1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "elementSize", "J");
        mv.visitInsn(LMUL);
        mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V",
                itf);
        mv.visitVarInsn(ASTORE, 6);
        mv.visitVarInsn(ALOAD, 5);
        mv.visitVarInsn(ALOAD, 6);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "bindLocation", "(Lcom/ibm/layout/Location;)V",
                itf);
        mv.visitVarInsn(ALOAD, 5);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(7, 7);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "put", "(JL" + elementInterfaceClassName + ";)V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(J)L" + elementInterfaceClassName + ";",
                itf);
        mv.visitTypeInsn(CHECKCAST, elementImplClassName);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitTypeInsn(CHECKCAST, elementImplClassName);
        mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "copyFrom", "(L" + elementImplClassName + ";)V",
                itf);
        mv.visitInsn(RETURN);
        mv.visitMaxs(3, 4);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, "at", "(J)Lcom/ibm/layout/Layout;", null,
                null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(J)L" + elementInterfaceClassName + ";",
                itf);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(3, 3);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, "put", "(JLcom/ibm/layout/Layout;)V", null,
                null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitTypeInsn(CHECKCAST, elementInterfaceClassName);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "put", "(JL" + elementInterfaceClassName + ";)V",
                itf);
        mv.visitInsn(RETURN);
        mv.visitMaxs(4, 4);
        mv.visitEnd();
    }

    ImplHelper.genLayoutTypeImpl(cw, mv, fv, arrayImplClassName, false);

    cw.visitEnd();

    return cw.toByteArray();
}

---

From source file:com.ibm.layout.GenArray2D.java

License:Open Source License

/**
 * Generate bytecodes for runtime class/*from  w  w  w.  j a  v a 2  s.  com*/
 * 
 * @return byte array containing bytecodes for runtime class
 * @throws Exception
 */
public byte[] genBytecode() throws Exception {

    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv = null;
    FieldVisitor fv = null;
    final boolean itf = false;

    cw.visit(V1_8, ACC_FINAL + ACC_SUPER, arrayImplClassName, arrayInterfaceClassSig, "java/lang/Object",
            new String[] { arrayInterfaceClassName });
    {
        fv = cw.visitField(ACC_PROTECTED + ACC_FINAL, "dim1", "J", null, null);
        fv.visitEnd();
    }
    {
        fv = cw.visitField(ACC_PROTECTED + ACC_FINAL, "dim2", "J", null, null);
        fv.visitEnd();
    }
    {
        fv = cw.visitField(ACC_PRIVATE + ACC_FINAL, "elementSize", "J", null, null);
        fv.visitEnd();
    }
    {
        fv = cw.visitField(ACC_PRIVATE + ACC_FINAL, "arraySize", "J", null, null);
        fv.visitEnd();
    }

    {
        mv = cw.visitMethod(ACC_PROTECTED, "<init>", "(JJJ)V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "dim1", "J");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "dim2", "J");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 5);
        mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "elementSize", "J");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 5);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitInsn(LMUL);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitInsn(LMUL);
        mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "arraySize", "J");
        mv.visitInsn(RETURN);
        mv.visitMaxs(5, 7);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "at", "(JJ)L" + elementInterfaceClassName + ";", null, null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, elementImplClassName);
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, elementImplClassName, "<init>", "()V", itf);
        mv.visitVarInsn(ASTORE, 5);
        mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
        mv.visitInsn(DUP);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "location", "Lcom/ibm/layout/Location;");
        mv.visitVarInsn(LLOAD, 1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "dim2", "J");
        mv.visitInsn(LMUL);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitInsn(LADD);
        mv.visitVarInsn(ALOAD, 5);
        mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "sizeof", "()J", itf);
        mv.visitInsn(LMUL);
        mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V",
                itf);
        mv.visitVarInsn(ASTORE, 6);
        mv.visitVarInsn(ALOAD, 5);
        mv.visitVarInsn(ALOAD, 6);
        mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "bindLocation", "(Lcom/ibm/layout/Location;)V",
                itf);
        mv.visitVarInsn(ALOAD, 5);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(7, 7);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "put", "(JJL" + elementInterfaceClassName + ";)V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(JJ)L" + elementInterfaceClassName + ";",
                itf);
        mv.visitTypeInsn(CHECKCAST, elementImplClassName);
        mv.visitVarInsn(ALOAD, 5);
        mv.visitTypeInsn(CHECKCAST, elementImplClassName);
        mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "copyFrom", "(L" + elementImplClassName + ";)V",
                itf);
        mv.visitInsn(RETURN);
        mv.visitMaxs(5, 6);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, "at", "(JJ)Lcom/ibm/layout/Layout;", null,
                null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(JJ)L" + elementInterfaceClassName + ";",
                itf);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(5, 5);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, "put", "(JJLcom/ibm/layout/Layout;)V",
                null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitVarInsn(ALOAD, 5);
        mv.visitTypeInsn(CHECKCAST, elementInterfaceClassName);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "put", "(JJL" + elementInterfaceClassName + ";)V",
                itf);
        mv.visitInsn(RETURN);
        mv.visitMaxs(6, 6);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "dim1", "()J", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "dim1", "J");
        mv.visitInsn(LRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "dim2", "()J", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "dim2", "J");
        mv.visitInsn(LRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "sizeof", "()J", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "arraySize", "J");
        mv.visitInsn(LRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, "java/lang/StringBuffer");
        mv.visitInsn(DUP);
        mv.visitLdcInsn("[");
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuffer", "<init>", "(Ljava/lang/String;)V", false);
        mv.visitVarInsn(ASTORE, 1);
        mv.visitInsn(LCONST_0);
        mv.visitVarInsn(LSTORE, 2);
        Label l0 = new Label();
        mv.visitJumpInsn(GOTO, l0);
        Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitFrame(Opcodes.F_APPEND, 2, new Object[] { "java/lang/StringBuffer", Opcodes.LONG }, 0, null);
        mv.visitInsn(LCONST_0);
        mv.visitVarInsn(LSTORE, 4);
        Label l2 = new Label();
        mv.visitJumpInsn(GOTO, l2);
        Label l3 = new Label();
        mv.visitLabel(l3);
        mv.visitFrame(Opcodes.F_APPEND, 1, new Object[] { Opcodes.LONG }, 0, null);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
        mv.visitInsn(DUP);
        mv.visitLdcInsn(" ");
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(Ljava/lang/String;)V", false);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 2);
        mv.visitVarInsn(LLOAD, 4);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(JJ)Lcom/ibm/layout/Layout;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "toString", "()Ljava/lang/String;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "append",
                "(Ljava/lang/String;)Ljava/lang/StringBuffer;", false);
        mv.visitInsn(POP);
        mv.visitVarInsn(LLOAD, 4);
        mv.visitInsn(LCONST_1);
        mv.visitInsn(LADD);
        mv.visitVarInsn(LSTORE, 4);
        mv.visitLabel(l2);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitVarInsn(LLOAD, 4);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "dim2", "J");
        mv.visitInsn(LCMP);
        mv.visitJumpInsn(IFLT, l3);
        mv.visitVarInsn(LLOAD, 2);
        mv.visitInsn(LCONST_1);
        mv.visitInsn(LADD);
        mv.visitVarInsn(LSTORE, 2);
        mv.visitLabel(l0);
        mv.visitFrame(Opcodes.F_CHOP, 1, null, 0, null);
        mv.visitVarInsn(LLOAD, 2);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "dim1", "J");
        mv.visitInsn(LCMP);
        mv.visitJumpInsn(IFLT, l1);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitLdcInsn(" ]");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "append",
                "(Ljava/lang/String;)Ljava/lang/StringBuffer;", false);
        mv.visitInsn(POP);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "toString", "()Ljava/lang/String;", false);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(7, 6);
        mv.visitEnd();
    }

    ImplHelper.genLayoutTypeImpl(cw, mv, fv, arrayImplClassName, false);
    cw.visitEnd();

    return cw.toByteArray();
}

---

From source file:com.ibm.layout.GenLayout.java

License:Open Source License

/**
 * Generate bytecodes for runtime class//from  ww w  . j a v a2s.c  o  m
 * 
 * @return byte array containing bytecodes for runtime class
 * @throws Exception
 */
public byte[] genBytecode() throws Exception {

    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
    FieldVisitor fv = null;
    MethodVisitor mv = null;
    ImplHelper.FieldDesc[] fieldDesc = ImplHelper.getFieldDesc(clazz);
    boolean isVariableLengthLayout = false;
    final boolean itf = false;

    {
        mv = cw.visitMethod(ACC_PUBLIC, "sizeof", "()J", null, null);
        mv.visitCode();
        mv.visitLdcInsn(new Long(getClassSize(fieldDesc)));
        mv.visitInsn(LRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }

    cw.visit(V1_8, ACC_FINAL + ACC_SUPER, implClassName, null, "java/lang/Object",
            new String[] { interfaceClassName });

    {
        mv = cw.visitMethod(0, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
        mv.visitInsn(RETURN);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    // getters
    for (int i = 0; i < fieldDesc.length; i++) {
        if (!ImplHelper.isPointerType(fieldDesc[i].rawType)) {
            if (ImplHelper.isTypePrimitive(fieldDesc[i].sig)) {
                mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "()" + fieldDesc[i].sig, null, null);
                mv.visitCode();
                mv.visitFieldInsn(GETSTATIC, implClassName, "unsafe", "Lsun/misc/Unsafe;");
                mv.visitVarInsn(ALOAD, 0);
                mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;");
                mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getData", "()[B", itf);
                mv.visitVarInsn(ALOAD, 0);
                mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;");
                mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getOffset", "()J", itf);
                mv.visitLdcInsn(fieldDesc[i].offset);
                mv.visitInsn(LADD);

                mv.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe",
                        "get" + ImplHelper.fieldSig2MethodType(fieldDesc[i].sig),
                        "(Ljava/lang/Object;J)" + fieldDesc[i].sig, itf);
                if (fieldDesc[i].sig == "D") {
                    mv.visitInsn(DRETURN);
                } else if (fieldDesc[i].sig == "J") {
                    mv.visitInsn(LRETURN);
                } else if (fieldDesc[i].sig == "F") {
                    mv.visitInsn(FRETURN);
                } else {
                    mv.visitInsn(IRETURN);
                }
                mv.visitMaxs(6, 1);
                mv.visitEnd();
            } else if (fieldDesc[i].repeatCountMember != null) {
                {
                    isVariableLengthLayout = true;
                    ImplHelper.FieldDesc repeatCountField = ImplHelper.findField(fieldDesc[i].repeatCountMember,
                            fieldDesc);
                    mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "()" + fieldDesc[i].sig,
                            "()" + fieldDesc[i].elementImpl, null);
                    mv.visitCode();
                    if ("" != fieldDesc[i].elementImpl) {
                        mv.visitTypeInsn(NEW, fieldDesc[i].elementImpl);
                        mv.visitInsn(DUP);
                        mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].elementImpl, "<init>", "()V", false);
                        mv.visitVarInsn(ASTORE, 1);
                        mv.visitTypeInsn(NEW, fieldDesc[i].impl);
                        mv.visitInsn(DUP);
                        mv.visitVarInsn(ALOAD, 0);
                        mv.visitMethodInsn(INVOKEVIRTUAL, implClassName, fieldDesc[i].repeatCountMember,
                                "()" + repeatCountField.sig, false);
                        if (!repeatCountField.sig.equals("J")) {
                            mv.visitInsn(I2L);
                        }
                        mv.visitVarInsn(ALOAD, 1);
                        mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].elementImpl, "sizeof", "()J", false);
                        mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(JJ)V", false);
                        mv.visitVarInsn(ASTORE, 2);
                        mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
                        mv.visitInsn(DUP);
                        mv.visitVarInsn(ALOAD, 0);
                        mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;");
                        mv.visitLdcInsn(fieldDesc[i].offset);
                        mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>",
                                "(Lcom/ibm/layout/Location;J)V", false);
                        mv.visitVarInsn(ASTORE, 3);
                        mv.visitVarInsn(ALOAD, 2);
                        mv.visitVarInsn(ALOAD, 3);
                        mv.visitMethodInsn(INVOKEINTERFACE, "com/ibm/layout/VLArray", "bindLocation",
                                "(Lcom/ibm/layout/Location;)V", true);
                        mv.visitVarInsn(ALOAD, 2);
                        mv.visitInsn(ARETURN);
                        mv.visitMaxs(6, 4);
                        mv.visitEnd();
                    } else {
                        throw new RuntimeException("primitive VLAs are unsupported");
                    }
                    {
                        mv = cw.visitMethod(ACC_PUBLIC, "bindLocation",
                                "(Lcom/ibm/layout/Location;" + repeatCountField.sig + ")V", null,
                                new String[] { "java/lang/UnsupportedOperationException" });
                        mv.visitCode();
                        mv.visitVarInsn(ALOAD, 1);
                        mv.visitVarInsn(ALOAD, 0);
                        mv.visitMethodInsn(INVOKEVIRTUAL, implClassName, "sizeof", "()J", false);
                        mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "checkDataFits", "(J)Z",
                                false);
                        Label l0 = new Label();
                        mv.visitJumpInsn(IFEQ, l0);
                        mv.visitVarInsn(ALOAD, 0);
                        mv.visitVarInsn(ALOAD, 1);
                        mv.visitFieldInsn(PUTFIELD, implClassName, "location", "Lcom/ibm/layout/Location;");
                        mv.visitLabel(l0);
                        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
                        mv.visitVarInsn(ALOAD, 0);
                        if (repeatCountField.sig.equals("J")) {
                            mv.visitVarInsn(LLOAD, 2);
                        } else {
                            mv.visitVarInsn(ILOAD, 2);
                        }
                        mv.visitMethodInsn(INVOKEVIRTUAL, implClassName, fieldDesc[i].repeatCountMember,
                                "(" + repeatCountField.sig + ")V", false);
                        mv.visitInsn(RETURN);
                        mv.visitMaxs(3, 3);
                        mv.visitEnd();
                    }
                }
            } else if (fieldDesc[i].dims == null) {
                /* nested field */
                mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "()" + fieldDesc[i].sig, null, null);
                mv.visitCode();
                mv.visitTypeInsn(NEW, ImplHelper.getImplClassName(fieldDesc[i].rawType));
                mv.visitInsn(DUP);
                mv.visitMethodInsn(INVOKESPECIAL, ImplHelper.getImplClassName(fieldDesc[i].rawType), "<init>",
                        "()V", itf);
                mv.visitVarInsn(ASTORE, 1);
                mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
                mv.visitInsn(DUP);
                mv.visitVarInsn(ALOAD, 0);
                mv.visitFieldInsn(GETFIELD, this.implClassName, "location", "Lcom/ibm/layout/Location;");
                mv.visitLdcInsn(fieldDesc[i].offset);
                mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>",
                        "(Lcom/ibm/layout/Location;J)V", itf);
                mv.visitVarInsn(ASTORE, 2);
                mv.visitVarInsn(ALOAD, 1);
                mv.visitVarInsn(ALOAD, 2);
                mv.visitMethodInsn(INVOKEVIRTUAL, ImplHelper.getImplClassName(fieldDesc[i].rawType),
                        "bindLocation", "(Lcom/ibm/layout/Location;)V", itf);
                mv.visitVarInsn(ALOAD, 1);
                mv.visitInsn(ARETURN);
                mv.visitMaxs(5, 3);
                mv.visitEnd();
            } else if (fieldDesc[i].dims.length == 1) {
                mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "()" + fieldDesc[i].sig,
                        "()" + fieldDesc[i].sigGeneric, null);
                mv.visitCode();
                if ("" != fieldDesc[i].elementImpl) {
                    mv.visitTypeInsn(NEW, fieldDesc[i].elementImpl);
                    mv.visitInsn(DUP);
                    mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].elementImpl, "<init>", "()V", itf);
                    mv.visitVarInsn(ASTORE, 1);
                    mv.visitTypeInsn(NEW, fieldDesc[i].impl);
                    mv.visitInsn(DUP);
                    mv.visitLdcInsn(fieldDesc[i].dims[0]);
                    mv.visitVarInsn(ALOAD, 1);
                    mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].elementImpl, "sizeof", "()J", itf);
                    mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(JJ)V", itf);
                    mv.visitVarInsn(ASTORE, 2);
                    mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
                    mv.visitInsn(DUP);
                    mv.visitVarInsn(ALOAD, 0);
                    mv.visitFieldInsn(GETFIELD, this.implClassName, "location", "Lcom/ibm/layout/Location;");
                    mv.visitLdcInsn(fieldDesc[i].offset);
                    mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>",
                            "(Lcom/ibm/layout/Location;J)V", itf);
                    mv.visitVarInsn(ASTORE, 3);
                    mv.visitVarInsn(ALOAD, 2);
                    mv.visitVarInsn(ALOAD, 3);
                    mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].impl, "bindLocation",
                            "(Lcom/ibm/layout/Location;)V", itf);
                    mv.visitVarInsn(ALOAD, 2);
                    mv.visitInsn(ARETURN);
                    mv.visitMaxs(6, 4);
                    mv.visitEnd();
                } else {
                    mv.visitTypeInsn(NEW, fieldDesc[i].impl);
                    mv.visitInsn(DUP);
                    mv.visitLdcInsn(fieldDesc[i].dims[0]);
                    mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(J)V", itf);
                    mv.visitVarInsn(ASTORE, 1);
                    mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
                    mv.visitInsn(DUP);
                    mv.visitVarInsn(ALOAD, 0);
                    mv.visitFieldInsn(GETFIELD, this.implClassName, "location", "Lcom/ibm/layout/Location;");
                    mv.visitLdcInsn(fieldDesc[i].offset);
                    mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>",
                            "(Lcom/ibm/layout/Location;J)V", itf);
                    mv.visitVarInsn(ASTORE, 2);
                    mv.visitVarInsn(ALOAD, 1);
                    mv.visitVarInsn(ALOAD, 2);
                    mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].impl, "bindLocation",
                            "(Lcom/ibm/layout/Location;)V", itf);
                    mv.visitVarInsn(ALOAD, 1);
                    mv.visitInsn(ARETURN);
                    mv.visitMaxs(5, 3);
                    mv.visitEnd();
                }
            } else if (fieldDesc[i].dims.length == 2) {
                if ("" != fieldDesc[i].elementImpl) {
                    mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "()" + fieldDesc[i].sig,
                            "()" + fieldDesc[i].sigGeneric, null);
                    mv.visitCode();
                    mv.visitTypeInsn(NEW, fieldDesc[i].elementImpl);
                    mv.visitInsn(DUP);
                    mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].elementImpl, "<init>", "()V", itf);
                    mv.visitVarInsn(ASTORE, 1);
                    mv.visitTypeInsn(NEW, fieldDesc[i].impl);
                    mv.visitInsn(DUP);
                    mv.visitLdcInsn(fieldDesc[i].dims[0]);
                    mv.visitLdcInsn(fieldDesc[i].dims[1]);
                    mv.visitVarInsn(ALOAD, 1);
                    mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].elementImpl, "sizeof", "()J", itf);
                    mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(JJJ)V", itf);
                    mv.visitVarInsn(ASTORE, 2);
                    mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
                    mv.visitInsn(DUP);
                    mv.visitVarInsn(ALOAD, 0);
                    mv.visitFieldInsn(GETFIELD, this.implClassName, "location", "Lcom/ibm/layout/Location;");
                    mv.visitLdcInsn(fieldDesc[i].offset);
                    mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>",
                            "(Lcom/ibm/layout/Location;J)V", itf);
                    mv.visitVarInsn(ASTORE, 3);
                    mv.visitVarInsn(ALOAD, 2);
                    mv.visitVarInsn(ALOAD, 3);
                    mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].impl, "bindLocation",
                            "(Lcom/ibm/layout/Location;)V", itf);
                    mv.visitVarInsn(ALOAD, 2);
                    mv.visitInsn(ARETURN);
                    mv.visitMaxs(8, 4);
                    mv.visitEnd();
                } else {
                    mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "()" + fieldDesc[i].sig,
                            "()" + fieldDesc[i].sigGeneric, null);
                    mv.visitCode();
                    mv.visitTypeInsn(NEW, fieldDesc[i].impl);
                    mv.visitInsn(DUP);
                    mv.visitLdcInsn(fieldDesc[i].dims[0]);
                    mv.visitLdcInsn(fieldDesc[i].dims[1]);
                    mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(JJ)V", itf);
                    mv.visitVarInsn(ASTORE, 1);
                    mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
                    mv.visitInsn(DUP);
                    mv.visitVarInsn(ALOAD, 0);
                    mv.visitFieldInsn(GETFIELD, this.implClassName, "location", "Lcom/ibm/layout/Location;");
                    mv.visitLdcInsn(fieldDesc[i].offset);
                    mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>",
                            "(Lcom/ibm/layout/Location;J)V", itf);
                    mv.visitVarInsn(ASTORE, 2);
                    mv.visitVarInsn(ALOAD, 1);
                    mv.visitVarInsn(ALOAD, 2);
                    mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].impl, "bindLocation",
                            "(Lcom/ibm/layout/Location;)V", itf);
                    mv.visitVarInsn(ALOAD, 1);
                    mv.visitInsn(ARETURN);
                    mv.visitMaxs(6, 3);
                    mv.visitEnd();
                }
            }
        }
    }

    // setters
    for (int i = 0; i < fieldDesc.length; i++) {
        if (ImplHelper.isTypePrimitive(fieldDesc[i].sig)) {
            mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "(" + fieldDesc[i].sig + ")V", null, null);
            mv.visitCode();
            mv.visitFieldInsn(GETSTATIC, implClassName, "unsafe", "Lsun/misc/Unsafe;");
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;");
            mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getData", "()[B", itf);
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;");
            mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getOffset", "()J", itf);
            mv.visitLdcInsn(fieldDesc[i].offset);
            mv.visitInsn(LADD);
            if (fieldDesc[i].sig == "D") {
                mv.visitVarInsn(DLOAD, 1);
            } else if (fieldDesc[i].sig == "J") {
                mv.visitVarInsn(LLOAD, 1);
            } else if (fieldDesc[i].sig == "F") {
                mv.visitVarInsn(FLOAD, 1);
            } else {
                mv.visitVarInsn(ILOAD, 1);
            }
            mv.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe",
                    "put" + ImplHelper.fieldSig2MethodType(fieldDesc[i].sig),
                    "(Ljava/lang/Object;J" + fieldDesc[i].sig + ")V", itf);
            mv.visitInsn(RETURN);
            mv.visitMaxs(6, 2);
            mv.visitEnd();
        }
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "copyFrom", "(L" + implClassName + ";)V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESPECIAL, implClassName, "copyFrom", "(Lcom/ibm/layout/Layout;)V", itf);
        mv.visitInsn(RETURN);
        mv.visitMaxs(2, 2);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
        mv.visitInsn(DUP);
        mv.visitLdcInsn("(");
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(Ljava/lang/String;)V", false);
        for (int i = 0; i < fieldDesc.length; i++) {
            if (ImplHelper.isTypePrimitive(fieldDesc[i].sig)) {
                mv.visitLdcInsn(fieldDesc[i].name + ": ");
                mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                        "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
                mv.visitVarInsn(ALOAD, 0);
                mv.visitMethodInsn(INVOKEVIRTUAL, implClassName, fieldDesc[i].name, "()" + fieldDesc[i].sig,
                        false);
                mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                        "(" + ImplHelper.getByteCodeSig(fieldDesc[i].sig) + ")Ljava/lang/StringBuilder;",
                        false);
                if (i < (fieldDesc.length - 1)) {
                    mv.visitLdcInsn(", ");
                    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                            "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
                }
            } else {
                mv.visitVarInsn(ALOAD, 0);
                mv.visitMethodInsn(INVOKEVIRTUAL, implClassName, fieldDesc[i].name, "()" + fieldDesc[i].sig,
                        false);
                mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "toString", "()Ljava/lang/String;",
                        false);
                mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                        "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
            }
        }
        mv.visitLdcInsn(")");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(3, 1);
        mv.visitEnd();
    }

    ImplHelper.genLayoutTypeImpl(cw, mv, fv, implClassName, isVariableLengthLayout);
    ImplHelper.getLayoutImpl(cw, mv, implClassName);

    cw.visitEnd();

    return cw.toByteArray();
}

---

From source file:com.ibm.layout.GenVLArray.java

License:Open Source License

/**
 * Generate bytecodes for runtime class//from   w w  w .j  av a  2  s .  c  o  m
 * 
 * @return byte array containing bytecodes for runtime class
 * @throws Exception
 */
public byte[] genBytecode() throws Exception {
    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv;
    FieldVisitor fv;
    final boolean itf = false;

    /* If user-defined array class is supplied, use it as superclass, and use its name instead of generating it */
    cw.visit(V1_8, ACC_FINAL + ACC_SUPER, arrayImplClassName, arrayInterfaceClassSig, "java/lang/Object",
            new String[] { arrayInterfaceClassName });
    {
        fv = cw.visitField(ACC_PROTECTED + ACC_FINAL, "length", "J", null, null);
        fv.visitEnd();
    }
    {
        fv = cw.visitField(ACC_PROTECTED + ACC_FINAL, "elementSize", "J", null, null);
        fv.visitEnd();
    }
    {
        fv = cw.visitField(ACC_PRIVATE, "arraySize", "J", null, null);
        fv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PROTECTED, "<init>", "(JJ)V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "elementSize", "J");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "length", "J");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitInsn(LMUL);
        mv.visitFieldInsn(PUTFIELD, arrayImplClassName, "arraySize", "J");
        mv.visitInsn(RETURN);
        mv.visitMaxs(5, 5);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "sizeof", "()J", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "arraySize", "J");
        mv.visitInsn(LRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "getComponentType", "()Ljava/lang/Class;",
                "()Ljava/lang/Class<*>;", null);
        mv.visitCode();
        mv.visitLdcInsn(Type.getType("L" + elementInterfaceClassName + ";"));
        mv.visitInsn(ARETURN);
        mv.visitMaxs(1, 0);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "getVLALength", "()J", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "length", "J");
        mv.visitInsn(LRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "at", "(J)L" + elementInterfaceClassName + ";", null, null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, elementImplClassName);
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, elementImplClassName, "<init>", "()V", false);
        mv.visitVarInsn(ASTORE, 3);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
        mv.visitInsn(DUP);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "location", "Lcom/ibm/layout/Location;");
        mv.visitVarInsn(LLOAD, 1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "elementSize", "J");
        mv.visitInsn(LMUL);
        mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V",
                false);
        mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "bindLocation", "(Lcom/ibm/layout/Location;)V",
                false);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(8, 4);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "range", "(JJ)Lcom/ibm/layout/Array1D;",
                "(JJ)Lcom/ibm/layout/Array1D<" + elementInterfaceClassName + ";>;", null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, arrayImplClassName);
        mv.visitInsn(DUP);
        mv.visitVarInsn(LLOAD, 3);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, this.arrayImplClassName, "elementSize", "J");
        mv.visitMethodInsn(INVOKESPECIAL, this.arrayImplClassName, "<init>", "(JJ)V", itf);
        mv.visitVarInsn(ASTORE, 5);
        mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
        mv.visitInsn(DUP);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "location", "Lcom/ibm/layout/Location;");
        mv.visitVarInsn(LLOAD, 1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "elementSize", "J");
        mv.visitInsn(LMUL);
        mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V",
                itf);
        mv.visitVarInsn(ASTORE, 6);
        mv.visitVarInsn(ALOAD, 5);
        mv.visitVarInsn(ALOAD, 6);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "bindLocation", "(Lcom/ibm/layout/Location;)V",
                itf);
        mv.visitVarInsn(ALOAD, 5);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(7, 7);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "put", "(JLcom/ibm/layout/Layout;)V", null, null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, elementImplClassName);
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, elementImplClassName, "<init>", "()V", false);
        mv.visitVarInsn(ASTORE, 4);
        mv.visitVarInsn(ALOAD, 4);
        mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
        mv.visitInsn(DUP);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "location", "Lcom/ibm/layout/Location;");
        mv.visitVarInsn(LLOAD, 1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "elementSize", "J");
        mv.visitInsn(LMUL);
        mv.visitMethodInsn(INVOKESPECIAL, "com/ibm/layout/Location", "<init>", "(Lcom/ibm/layout/Location;J)V",
                false);
        mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "bindLocation", "(Lcom/ibm/layout/Location;)V",
                false);
        mv.visitVarInsn(ALOAD, 4);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "copyFrom", "(Lcom/ibm/layout/Layout;)V",
                false);
        mv.visitInsn(RETURN);
        mv.visitMaxs(8, 5);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "put", "(JL" + elementInterfaceClassName + ";)V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(J)L" + elementInterfaceClassName + ";",
                itf);
        mv.visitTypeInsn(CHECKCAST, elementImplClassName);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitTypeInsn(CHECKCAST, elementImplClassName);
        mv.visitMethodInsn(INVOKEVIRTUAL, elementImplClassName, "copyFrom", "(L" + elementImplClassName + ";)V",
                itf);
        mv.visitInsn(RETURN);
        mv.visitMaxs(3, 4);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, "at", "(J)Lcom/ibm/layout/Layout;", null,
                null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(J)L" + elementInterfaceClassName + ";",
                itf);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(3, 3);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null);
        mv.visitCode();
        mv.visitTypeInsn(NEW, "java/lang/StringBuffer");
        mv.visitInsn(DUP);
        mv.visitLdcInsn("[");
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuffer", "<init>", "(Ljava/lang/String;)V", false);
        mv.visitVarInsn(ASTORE, 1);
        mv.visitInsn(LCONST_0);
        mv.visitVarInsn(LSTORE, 2);
        Label l0 = new Label();
        mv.visitJumpInsn(GOTO, l0);
        Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitFrame(Opcodes.F_APPEND, 2, new Object[] { "java/lang/StringBuffer", Opcodes.LONG }, 0, null);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
        mv.visitInsn(DUP);
        mv.visitLdcInsn(" ");
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(Ljava/lang/String;)V", false);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, arrayImplClassName, "at", "(J)L" + elementInterfaceClassName + ";",
                false);
        mv.visitMethodInsn(INVOKEINTERFACE, elementInterfaceClassName, "toString", "()Ljava/lang/String;",
                true);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "append",
                "(Ljava/lang/String;)Ljava/lang/StringBuffer;", false);
        mv.visitInsn(POP);
        mv.visitVarInsn(LLOAD, 2);
        mv.visitInsn(LCONST_1);
        mv.visitInsn(LADD);
        mv.visitVarInsn(LSTORE, 2);
        mv.visitLabel(l0);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitVarInsn(LLOAD, 2);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, arrayImplClassName, "length", "J");
        mv.visitInsn(LCMP);
        mv.visitJumpInsn(IFLT, l1);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitLdcInsn(" ]");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "append",
                "(Ljava/lang/String;)Ljava/lang/StringBuffer;", false);
        mv.visitInsn(POP);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuffer", "toString", "()Ljava/lang/String;", false);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(5, 4);
        mv.visitEnd();
    }

    ImplHelper.genLayoutTypeImpl(cw, mv, fv, arrayImplClassName, false);

    cw.visitEnd();

    return cw.toByteArray();
}

---

From source file:com.ibm.layout.ImplHelper.java

License:Open Source License

static void genLayoutTypeImpl(ClassVisitor cw, MethodVisitor mv, FieldVisitor fv, String typeName,
        boolean layoutContainsVLA) {
    {//from  w  w  w  .  j  a  v a2 s  .  co  m
        fv = cw.visitField(ACC_PRIVATE + ACC_FINAL + ACC_STATIC, "unsafe", "Lsun/misc/Unsafe;", null, null);
        fv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "containsVLA", "()Z", null, null);
        mv.visitCode();
        //if layout contains VLA return true, otherwise false
        if (layoutContainsVLA) {
            mv.visitInsn(ICONST_1);
        } else {
            mv.visitInsn(ICONST_0);
        }
        mv.visitInsn(IRETURN);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    {
        fv = cw.visitField(ACC_PROTECTED, "location", "Lcom/ibm/layout/Location;", null, null);
        fv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "bindLocation", "(Lcom/ibm/layout/Location;)V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, typeName, "sizeof", "()J", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "checkDataFits", "(J)Z", false);
        Label l0 = new Label();
        mv.visitJumpInsn(IFEQ, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitFieldInsn(PUTFIELD, typeName, "location", "Lcom/ibm/layout/Location;");
        mv.visitLabel(l0);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitInsn(RETURN);
        mv.visitMaxs(3, 2);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "writeToByteArray", "(J[BII)I", null, null);
        mv.visitCode();
        mv.visitVarInsn(ILOAD, 5);
        mv.visitInsn(I2L);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, typeName, "sizeof", "()J", false);
        mv.visitInsn(LCMP);
        Label l0 = new Label();
        mv.visitJumpInsn(IFLE, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, typeName, "sizeof", "()J", false);
        mv.visitInsn(L2I);
        mv.visitVarInsn(ISTORE, 5);
        mv.visitLabel(l0);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, typeName, "location", "Lcom/ibm/layout/Location;");
        mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getData", "()[B", false);
        Label l1 = new Label();
        mv.visitJumpInsn(IFNULL, l1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, typeName, "location", "Lcom/ibm/layout/Location;");
        mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getData", "()[B", false);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitInsn(L2I);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitVarInsn(ILOAD, 4);
        mv.visitVarInsn(ILOAD, 5);
        mv.visitMethodInsn(INVOKESTATIC, "java/lang/System", "arraycopy",
                "(Ljava/lang/Object;ILjava/lang/Object;II)V", false);
        Label l2 = new Label();
        mv.visitJumpInsn(GOTO, l2);
        mv.visitLabel(l1);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitFieldInsn(GETSTATIC, typeName, "unsafe", "Lsun/misc/Unsafe;");
        mv.visitInsn(ACONST_NULL);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, typeName, "location", "Lcom/ibm/layout/Location;");
        mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getOffset", "()J", false);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitInsn(LADD);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitFieldInsn(GETSTATIC, typeName, "unsafe", "Lsun/misc/Unsafe;");
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe", "arrayBaseOffset", "(Ljava/lang/Class;)I", false);
        mv.visitInsn(I2L);
        mv.visitVarInsn(ILOAD, 5);
        mv.visitInsn(I2L);
        mv.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe", "copyMemory",
                "(Ljava/lang/Object;JLjava/lang/Object;JJ)V", false);
        mv.visitLabel(l2);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitVarInsn(ILOAD, 5);
        mv.visitInsn(IRETURN);
        mv.visitMaxs(9, 6);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "readFromByteArray", "(J[BII)I", null, null);
        mv.visitCode();
        mv.visitVarInsn(ILOAD, 5);
        mv.visitInsn(I2L);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, typeName, "sizeof", "()J", false);
        mv.visitInsn(LCMP);
        Label l0 = new Label();
        mv.visitJumpInsn(IFLE, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, typeName, "sizeof", "()J", false);
        mv.visitInsn(L2I);
        mv.visitVarInsn(ISTORE, 5);
        mv.visitLabel(l0);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, typeName, "location", "Lcom/ibm/layout/Location;");
        mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getData", "()[B", false);
        Label l1 = new Label();
        mv.visitJumpInsn(IFNULL, l1);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitVarInsn(ILOAD, 4);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, typeName, "location", "Lcom/ibm/layout/Location;");
        mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getData", "()[B", false);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitInsn(L2I);
        mv.visitVarInsn(ILOAD, 5);
        mv.visitMethodInsn(INVOKESTATIC, "java/lang/System", "arraycopy",
                "(Ljava/lang/Object;ILjava/lang/Object;II)V", false);
        Label l2 = new Label();
        mv.visitJumpInsn(GOTO, l2);
        mv.visitLabel(l1);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitFieldInsn(GETSTATIC, typeName, "unsafe", "Lsun/misc/Unsafe;");
        mv.visitVarInsn(ALOAD, 3);
        mv.visitFieldInsn(GETSTATIC, typeName, "unsafe", "Lsun/misc/Unsafe;");
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe", "arrayBaseOffset", "(Ljava/lang/Class;)I", false);
        mv.visitVarInsn(ILOAD, 4);
        mv.visitInsn(IADD);
        mv.visitInsn(I2L);
        mv.visitInsn(ACONST_NULL);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, typeName, "location", "Lcom/ibm/layout/Location;");
        mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getOffset", "()J", false);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitInsn(LADD);
        mv.visitVarInsn(ILOAD, 5);
        mv.visitInsn(I2L);
        mv.visitMethodInsn(INVOKEVIRTUAL, "sun/misc/Unsafe", "copyMemory",
                "(Ljava/lang/Object;JLjava/lang/Object;JJ)V", false);
        mv.visitLabel(l2);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitVarInsn(ILOAD, 5);
        mv.visitInsn(IRETURN);
        mv.visitMaxs(9, 6);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "asByteBuffer", "()Ljava/nio/ByteBuffer;", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, typeName, "location", "Lcom/ibm/layout/Location;");
        mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getData", "()[B", false);
        Label l0 = new Label();
        mv.visitJumpInsn(IFNULL, l0);
        mv.visitTypeInsn(NEW, "java/lang/UnsupportedOperationException");
        mv.visitInsn(DUP);
        mv.visitLdcInsn("not off-heap");
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/UnsupportedOperationException", "<init>",
                "(Ljava/lang/String;)V", false);
        mv.visitInsn(ATHROW);
        mv.visitLabel(l0);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, typeName, "location", "Lcom/ibm/layout/Location;");
        mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getOffset", "()J", false);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, typeName, "sizeof", "()J", false);
        mv.visitMethodInsn(INVOKESTATIC, "com/ibm/layout/UnsafeHelper", "bufferFromAddress",
                "(JJ)Ljava/nio/ByteBuffer;", false);
        mv.visitVarInsn(ASTORE, 1);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESTATIC, "java/nio/ByteOrder", "nativeOrder", "()Ljava/nio/ByteOrder;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/nio/ByteBuffer", "order",
                "(Ljava/nio/ByteOrder;)Ljava/nio/ByteBuffer;", false);
        mv.visitInsn(POP);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(4, 2);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL + ACC_STATIC, "asByteBuffer",
                "(Lcom/ibm/layout/Location;J)Ljava/nio/ByteBuffer;", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getData", "()[B", false);
        Label l0 = new Label();
        mv.visitJumpInsn(IFNULL, l0);
        mv.visitTypeInsn(NEW, "java/lang/UnsupportedOperationException");
        mv.visitInsn(DUP);
        mv.visitLdcInsn("not off-heap");
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/UnsupportedOperationException", "<init>",
                "(Ljava/lang/String;)V", false);
        mv.visitInsn(ATHROW);
        mv.visitLabel(l0);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getOffset", "()J", false);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitMethodInsn(INVOKESTATIC, "com/ibm/layout/UnsafeHelper", "bufferFromAddress",
                "(JJ)Ljava/nio/ByteBuffer;", false);
        mv.visitVarInsn(ASTORE, 3);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKESTATIC, "java/nio/ByteOrder", "nativeOrder", "()Ljava/nio/ByteOrder;", false);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/nio/ByteBuffer", "order",
                "(Ljava/nio/ByteOrder;)Ljava/nio/ByteBuffer;", false);
        mv.visitInsn(POP);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(4, 4);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "unsafeCast", "(Ljava/lang/Class;)Lcom/ibm/layout/Layout;",
                "<T::Lcom/ibm/layout/Layout;>(Ljava/lang/Class<TT;>;)TT;", null);
        mv.visitCode();
        Label l0 = new Label();
        Label l1 = new Label();
        Label l2 = new Label();
        mv.visitTryCatchBlock(l0, l1, l2, "java/lang/NoSuchMethodException");
        Label l3 = new Label();
        mv.visitTryCatchBlock(l0, l1, l3, "java/lang/SecurityException");
        Label l4 = new Label();
        mv.visitTryCatchBlock(l0, l1, l4, "java/lang/InstantiationException");
        Label l5 = new Label();
        mv.visitTryCatchBlock(l0, l1, l5, "java/lang/IllegalAccessException");
        Label l6 = new Label();
        mv.visitTryCatchBlock(l0, l1, l6, "java/lang/IllegalArgumentException");
        Label l7 = new Label();
        mv.visitTryCatchBlock(l0, l1, l7, "java/lang/reflect/InvocationTargetException");
        mv.visitLabel(l0);
        mv.visitMethodInsn(INVOKESTATIC, "com/ibm/layout/LayoutHelper", "getFactory",
                "()Lcom/ibm/layout/LayoutHelper;", false);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/LayoutHelper", "genLayoutImpl",
                "(Ljava/lang/Class;)Ljava/lang/Class;", false);
        mv.visitVarInsn(ASTORE, 2);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitInsn(ICONST_0);
        mv.visitTypeInsn(ANEWARRAY, "java/lang/Class");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getDeclaredConstructor",
                "([Ljava/lang/Class;)Ljava/lang/reflect/Constructor;", false);
        mv.visitVarInsn(ASTORE, 3);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitInsn(ICONST_1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Constructor", "setAccessible", "(Z)V", false);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitInsn(ICONST_0);
        mv.visitTypeInsn(ANEWARRAY, "java/lang/Object");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Constructor", "newInstance",
                "([Ljava/lang/Object;)Ljava/lang/Object;", false);
        mv.visitTypeInsn(CHECKCAST, "com/ibm/layout/Layout");
        mv.visitVarInsn(ASTORE, 4);
        mv.visitVarInsn(ALOAD, 4);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, typeName, "location", "Lcom/ibm/layout/Location;");
        mv.visitMethodInsn(INVOKEINTERFACE, "com/ibm/layout/Layout", "bindLocation",
                "(Lcom/ibm/layout/Location;)V", true);
        mv.visitVarInsn(ALOAD, 4);
        mv.visitLabel(l1);
        mv.visitInsn(ARETURN);
        mv.visitLabel(l2);
        mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/NoSuchMethodException" });
        mv.visitVarInsn(ASTORE, 2);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/NoSuchMethodException", "printStackTrace", "()V", false);
        Label l8 = new Label();
        mv.visitJumpInsn(GOTO, l8);
        mv.visitLabel(l3);
        mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/SecurityException" });
        mv.visitVarInsn(ASTORE, 2);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/SecurityException", "printStackTrace", "()V", false);
        mv.visitJumpInsn(GOTO, l8);
        mv.visitLabel(l4);
        mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/InstantiationException" });
        mv.visitVarInsn(ASTORE, 2);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/InstantiationException", "printStackTrace", "()V", false);
        mv.visitJumpInsn(GOTO, l8);
        mv.visitLabel(l5);
        mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/IllegalAccessException" });
        mv.visitVarInsn(ASTORE, 2);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/IllegalAccessException", "printStackTrace", "()V", false);
        mv.visitJumpInsn(GOTO, l8);
        mv.visitLabel(l6);
        mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/IllegalArgumentException" });
        mv.visitVarInsn(ASTORE, 2);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/IllegalArgumentException", "printStackTrace", "()V",
                false);
        mv.visitJumpInsn(GOTO, l8);
        mv.visitLabel(l7);
        mv.visitFrame(Opcodes.F_SAME1, 0, null, 1,
                new Object[] { "java/lang/reflect/InvocationTargetException" });
        mv.visitVarInsn(ASTORE, 2);
        mv.visitVarInsn(ALOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/InvocationTargetException", "printStackTrace",
                "()V", false);
        mv.visitLabel(l8);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitInsn(ACONST_NULL);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(2, 5);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_FINAL, "unsafeCast",
                "(Ljava/lang/Class;J)Lcom/ibm/layout/Array1D;",
                "<T::Lcom/ibm/layout/Layout;>(Ljava/lang/Class<TT;>;J)Lcom/ibm/layout/Array1D<TT;>;", null);
        mv.visitCode();
        Label l0 = new Label();
        Label l1 = new Label();
        Label l2 = new Label();
        mv.visitTryCatchBlock(l0, l1, l2, "java/lang/NoSuchMethodException");
        Label l3 = new Label();
        mv.visitTryCatchBlock(l0, l1, l3, "java/lang/SecurityException");
        Label l4 = new Label();
        mv.visitTryCatchBlock(l0, l1, l4, "java/lang/InstantiationException");
        Label l5 = new Label();
        mv.visitTryCatchBlock(l0, l1, l5, "java/lang/IllegalAccessException");
        Label l6 = new Label();
        mv.visitTryCatchBlock(l0, l1, l6, "java/lang/IllegalArgumentException");
        Label l7 = new Label();
        mv.visitTryCatchBlock(l0, l1, l7, "java/lang/reflect/InvocationTargetException");
        mv.visitLabel(l0);
        mv.visitMethodInsn(INVOKESTATIC, "com/ibm/layout/LayoutHelper", "getFactory",
                "()Lcom/ibm/layout/LayoutHelper;", false);
        mv.visitVarInsn(ASTORE, 4);
        mv.visitVarInsn(ALOAD, 4);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/LayoutHelper", "genLayoutImpl",
                "(Ljava/lang/Class;)Ljava/lang/Class;", false);
        mv.visitVarInsn(ASTORE, 5);
        mv.visitVarInsn(ALOAD, 5);
        mv.visitInsn(ICONST_0);
        mv.visitTypeInsn(ANEWARRAY, "java/lang/Class");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getDeclaredConstructor",
                "([Ljava/lang/Class;)Ljava/lang/reflect/Constructor;", false);
        mv.visitVarInsn(ASTORE, 6);
        mv.visitVarInsn(ALOAD, 6);
        mv.visitInsn(ICONST_1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Constructor", "setAccessible", "(Z)V", false);
        mv.visitVarInsn(ALOAD, 6);
        mv.visitInsn(ICONST_0);
        mv.visitTypeInsn(ANEWARRAY, "java/lang/Object");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Constructor", "newInstance",
                "([Ljava/lang/Object;)Ljava/lang/Object;", false);
        mv.visitTypeInsn(CHECKCAST, "com/ibm/layout/Layout");
        mv.visitMethodInsn(INVOKEINTERFACE, "com/ibm/layout/Layout", "sizeof", "()J", true);
        mv.visitVarInsn(LSTORE, 7);
        mv.visitVarInsn(ALOAD, 4);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/LayoutHelper", "genArray1DImpl",
                "(Ljava/lang/Class;)Ljava/lang/Class;", false);
        mv.visitVarInsn(ASTORE, 9);
        mv.visitVarInsn(ALOAD, 9);
        mv.visitInsn(ICONST_2);
        mv.visitTypeInsn(ANEWARRAY, "java/lang/Class");
        mv.visitInsn(DUP);
        mv.visitInsn(ICONST_0);
        mv.visitFieldInsn(GETSTATIC, "java/lang/Long", "TYPE", "Ljava/lang/Class;");
        mv.visitInsn(AASTORE);
        mv.visitInsn(DUP);
        mv.visitInsn(ICONST_1);
        mv.visitFieldInsn(GETSTATIC, "java/lang/Long", "TYPE", "Ljava/lang/Class;");
        mv.visitInsn(AASTORE);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getDeclaredConstructor",
                "([Ljava/lang/Class;)Ljava/lang/reflect/Constructor;", false);
        mv.visitVarInsn(ASTORE, 10);
        mv.visitVarInsn(ALOAD, 10);
        mv.visitInsn(ICONST_1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Constructor", "setAccessible", "(Z)V", false);
        mv.visitVarInsn(ALOAD, 10);
        mv.visitInsn(ICONST_2);
        mv.visitTypeInsn(ANEWARRAY, "java/lang/Object");
        mv.visitInsn(DUP);
        mv.visitInsn(ICONST_0);
        mv.visitVarInsn(LLOAD, 2);
        mv.visitMethodInsn(INVOKESTATIC, "java/lang/Long", "valueOf", "(J)Ljava/lang/Long;", false);
        mv.visitInsn(AASTORE);
        mv.visitInsn(DUP);
        mv.visitInsn(ICONST_1);
        mv.visitVarInsn(LLOAD, 7);
        mv.visitMethodInsn(INVOKESTATIC, "java/lang/Long", "valueOf", "(J)Ljava/lang/Long;", false);
        mv.visitInsn(AASTORE);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/Constructor", "newInstance",
                "([Ljava/lang/Object;)Ljava/lang/Object;", false);
        mv.visitTypeInsn(CHECKCAST, "com/ibm/layout/Array1D");
        mv.visitVarInsn(ASTORE, 11);
        mv.visitVarInsn(ALOAD, 11);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, typeName, "location", "Lcom/ibm/layout/Location;");
        mv.visitMethodInsn(INVOKEINTERFACE, "com/ibm/layout/Array1D", "bindLocation",
                "(Lcom/ibm/layout/Location;)V", true);
        mv.visitVarInsn(ALOAD, 11);
        mv.visitLabel(l1);
        mv.visitInsn(ARETURN);
        mv.visitLabel(l2);
        mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/NoSuchMethodException" });
        mv.visitVarInsn(ASTORE, 4);
        mv.visitVarInsn(ALOAD, 4);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/NoSuchMethodException", "printStackTrace", "()V", false);
        Label l8 = new Label();
        mv.visitJumpInsn(GOTO, l8);
        mv.visitLabel(l3);
        mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/SecurityException" });
        mv.visitVarInsn(ASTORE, 4);
        mv.visitVarInsn(ALOAD, 4);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/SecurityException", "printStackTrace", "()V", false);
        mv.visitJumpInsn(GOTO, l8);
        mv.visitLabel(l4);
        mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/InstantiationException" });
        mv.visitVarInsn(ASTORE, 4);
        mv.visitVarInsn(ALOAD, 4);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/InstantiationException", "printStackTrace", "()V", false);
        mv.visitJumpInsn(GOTO, l8);
        mv.visitLabel(l5);
        mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/IllegalAccessException" });
        mv.visitVarInsn(ASTORE, 4);
        mv.visitVarInsn(ALOAD, 4);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/IllegalAccessException", "printStackTrace", "()V", false);
        mv.visitJumpInsn(GOTO, l8);
        mv.visitLabel(l6);
        mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/IllegalArgumentException" });
        mv.visitVarInsn(ASTORE, 4);
        mv.visitVarInsn(ALOAD, 4);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/IllegalArgumentException", "printStackTrace", "()V",
                false);
        mv.visitJumpInsn(GOTO, l8);
        mv.visitLabel(l7);
        mv.visitFrame(Opcodes.F_SAME1, 0, null, 1,
                new Object[] { "java/lang/reflect/InvocationTargetException" });
        mv.visitVarInsn(ASTORE, 4);
        mv.visitVarInsn(ALOAD, 4);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/InvocationTargetException", "printStackTrace",
                "()V", false);
        mv.visitLabel(l8);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitInsn(ACONST_NULL);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(6, 12);
        mv.visitEnd();
    }
}

---

From source file:com.intellij.compiler.notNullVerification.NonnullVerifyingInstrumenter.java

License:Apache License

public MethodVisitor visitMethod(final int access, final String name, final String desc, final String signature,
        final String[] exceptions) {
    final Type[] args = Type.getArgumentTypes(desc);
    final Type returnType = Type.getReturnType(desc);
    MethodVisitor v = cv.visitMethod(access, name, desc, signature, exceptions);
    return new MethodAdapter(v) {

        private final ArrayList myNotNullParams = new ArrayList();
        private int mySyntheticCount = 0;
        private boolean myIsNotNull = false;
        //private boolean myIsUnmodifiable = false;
        public Label myThrowLabel;
        //public Label myWrapLabel;
        private Label myStartGeneratedCodeLabel;

        public AnnotationVisitor visitParameterAnnotation(final int parameter, final String anno,
                final boolean visible) {
            AnnotationVisitor av;/*www . j a va2s .com*/
            av = mv.visitParameterAnnotation(parameter, anno, visible);
            if (isReferenceType(args[parameter]) && anno.equals(NOT_NULL_ANNO)) {
                myNotNullParams.add(new Integer(parameter));
            } else if (anno.equals("Ljava/lang/Synthetic;")) {
                // See asm r1278 for what we do this,
                // http://forge.objectweb.org/tracker/index.php?func=detail&aid=307392&group_id=23&atid=100023
                mySyntheticCount++;
            }
            return av;
        }

        public AnnotationVisitor visitAnnotation(String anno, boolean isRuntime) {
            final AnnotationVisitor av = mv.visitAnnotation(anno, isRuntime);
            if (isReferenceType(returnType) && anno.equals(NOT_NULL_ANNO)) {
                myIsNotNull = true;
            }

            return av;
        }

        public void visitCode() {
            if (myNotNullParams.size() > 0) {
                myStartGeneratedCodeLabel = new Label();
                mv.visitLabel(myStartGeneratedCodeLabel);
            }
            for (int p = 0; p < myNotNullParams.size(); ++p) {
                int var = ((access & ACC_STATIC) == 0) ? 1 : 0;
                int param = ((Integer) myNotNullParams.get(p)).intValue();
                for (int i = 0; i < param; ++i) {
                    var += args[i].getSize();
                }
                mv.visitVarInsn(ALOAD, var);

                Label end = new Label();
                mv.visitJumpInsn(IFNONNULL, end);

                generateThrow(IAE_CLASS_NAME, "Argument " + (param - mySyntheticCount)
                        + " for @NotNull parameter of " + myClassName + "." + name + " must not be null", end);
            }
        }

        public void visitLocalVariable(final String name, final String desc, final String signature,
                final Label start, final Label end, final int index) {
            final boolean isStatic = (access & ACC_STATIC) != 0;
            final boolean isParameter = isStatic ? index < args.length : index <= args.length;
            mv.visitLocalVariable(name, desc, signature,
                    (isParameter && myStartGeneratedCodeLabel != null) ? myStartGeneratedCodeLabel : start, end,
                    index);
        }

        public void visitInsn(int opcode) {
            if (opcode == ARETURN) {
                if (myIsNotNull) {
                    mv.visitInsn(DUP);
                    /*generateConditionalThrow("@NotNull method " + myClassName + "." + name + " must not return null",
                      "java/lang/IllegalStateException");*/
                    if (myThrowLabel == null) {
                        Label skipLabel = new Label();
                        mv.visitJumpInsn(IFNONNULL, skipLabel);
                        myThrowLabel = new Label();
                        mv.visitLabel(myThrowLabel);
                        generateThrow(ISE_CLASS_NAME,
                                "@NotNull method " + myClassName + "." + name + " must not return null",
                                skipLabel);
                    } else {
                        mv.visitJumpInsn(IFNULL, myThrowLabel);
                    }
                }
            }

            mv.visitInsn(opcode);
        }

        private void generateThrow(final String exceptionClass, final String descr, final Label end) {
            String exceptionParamClass = "(Ljava/lang/String;)V";
            mv.visitTypeInsn(NEW, exceptionClass);
            mv.visitInsn(DUP);
            mv.visitLdcInsn(descr);
            mv.visitMethodInsn(INVOKESPECIAL, exceptionClass, CONSTRUCTOR_NAME, exceptionParamClass);
            mv.visitInsn(ATHROW);
            mv.visitLabel(end);

            myIsModification = true;
        }

        public void visitMaxs(final int maxStack, final int maxLocals) {
            try {
                super.visitMaxs(maxStack, maxLocals);
            } catch (ArrayIndexOutOfBoundsException e) {
                throw new ArrayIndexOutOfBoundsException(
                        "maxs processing failed for method " + name + ": " + e.getMessage());
            }
        }
    };
}

---

From source file:com.intellij.compiler.notNullVerification.NotNullVerifyingInstrumenter.java

License:Apache License

@Override
public MethodVisitor visitMethod(final int access, final String name, final String desc, final String signature,
        final String[] exceptions) {
    final Type[] args = Type.getArgumentTypes(desc);
    final Type returnType = Type.getReturnType(desc);
    final MethodVisitor v = cv.visitMethod(access, name, desc, signature, exceptions);
    return new MethodVisitor(Opcodes.ASM5, v) {

        private final List<Integer> myNotNullParams = new ArrayList<Integer>();
        private int mySyntheticCount = 0;
        private boolean myIsNotNull = false;
        private Label myStartGeneratedCodeLabel;

        @Override//from   w  w w  . java 2s  .c o m
        public AnnotationVisitor visitParameterAnnotation(final int parameter, final String anno,
                final boolean visible) {
            final AnnotationVisitor av = mv.visitParameterAnnotation(parameter, anno, visible);
            if (isReferenceType(args[parameter]) && anno.equals(NOT_NULL_TYPE)) {
                myNotNullParams.add(parameter);
            } else if (anno.equals(SYNTHETIC_TYPE)) {
                // see http://forge.ow2.org/tracker/?aid=307392&group_id=23&atid=100023&func=detail
                mySyntheticCount++;
            }
            return av;
        }

        @Override
        public AnnotationVisitor visitAnnotation(String anno, boolean isRuntime) {
            final AnnotationVisitor av = mv.visitAnnotation(anno, isRuntime);
            if (isReferenceType(returnType) && anno.equals(NOT_NULL_TYPE)) {
                myIsNotNull = true;
            }

            return av;
        }

        @Override
        public void visitCode() {
            if (myNotNullParams.size() > 0) {
                myStartGeneratedCodeLabel = new Label();
                mv.visitLabel(myStartGeneratedCodeLabel);
            }
            for (Integer param : myNotNullParams) {
                int var = ((access & ACC_STATIC) == 0) ? 1 : 0;
                for (int i = 0; i < param; ++i) {
                    var += args[i].getSize();
                }
                mv.visitVarInsn(ALOAD, var);

                Label end = new Label();
                mv.visitJumpInsn(IFNONNULL, end);

                generateThrow(IAE_CLASS_NAME,
                        String.format(NULL_ARG_MESSAGE, param - mySyntheticCount, myClassName, name), end);
            }
        }

        @Override
        public void visitLocalVariable(final String name, final String desc, final String signature,
                final Label start, final Label end, final int index) {
            final boolean isStatic = (access & ACC_STATIC) != 0;
            final boolean isParameter = isStatic ? index < args.length : index <= args.length;
            final Label label = (isParameter && myStartGeneratedCodeLabel != null) ? myStartGeneratedCodeLabel
                    : start;
            mv.visitLocalVariable(name, desc, signature, label, end, index);
        }

        @Override
        public void visitInsn(int opcode) {
            if (opcode == ARETURN) {
                if (myIsNotNull) {
                    mv.visitInsn(DUP);
                    final Label skipLabel = new Label();
                    mv.visitJumpInsn(IFNONNULL, skipLabel);
                    generateThrow(ISE_CLASS_NAME, String.format(NULL_RESULT_MESSAGE, myClassName, name),
                            skipLabel);
                }
            }

            mv.visitInsn(opcode);
        }

        private void generateThrow(final String exceptionClass, final String descr, final Label end) {
            mv.visitTypeInsn(NEW, exceptionClass);
            mv.visitInsn(DUP);
            mv.visitLdcInsn(descr);
            mv.visitMethodInsn(INVOKESPECIAL, exceptionClass, CONSTRUCTOR_NAME, EXCEPTION_INIT_SIGNATURE);
            mv.visitInsn(ATHROW);
            mv.visitLabel(end);

            myIsModification = true;
            processPostponedErrors();
        }

        @Override
        public void visitMaxs(final int maxStack, final int maxLocals) {
            try {
                super.visitMaxs(maxStack, maxLocals);
            } catch (Throwable e) {
                registerError(name, "visitMaxs", e);
            }
        }
    };
}

---

From source file:com.intellij.compiler.notNullVerification.ThrowOnNullMethodVisitor.java

License:Apache License

/**
 * Visits a zero operand instruction (ie return).
 * <p>//from  w  w w .  j  av  a2s  . c om
 * {@inheritDoc}
 */
public void visitInsn(final int opcode) {
    if (shouldInclude() && opcode == Opcodes.ARETURN) {
        if (isReturnNotNull) {
            mv.visitInsn(Opcodes.DUP);
            final Label skipLabel = new Label();
            mv.visitJumpInsn(Opcodes.IFNONNULL, skipLabel);
            generateThrow(ISE_CLASS_NAME,
                    "NotNull method " + classInfo.getName() + "." + methodName + " must not return null",
                    skipLabel);
        }
    }
    mv.visitInsn(opcode);
}

---

From source file:com.intellij.compiler.notNullVerification.ThrowOnNullMethodVisitor.java

License:Apache License

/**
 * Starts the visit of the method's code, if any (ie non abstract method).
 *//*from   w  w w . ja  v  a 2 s . com*/
@Override
public void visitCode() {
    if (shouldInclude()) {
        if (!notNullParams.isEmpty()) {
            startGeneratedCodeLabel = new Label();
            mv.visitLabel(startGeneratedCodeLabel);
        }
        for (final Integer notNullParam : notNullParams) {
            int var = ((methodAccess & Opcodes.ACC_STATIC) == 0) ? 1 : 0;
            for (int i = 0; i < notNullParam + syntheticCount; ++i) {
                var += argumentTypes[i].getSize();
            }
            mv.visitVarInsn(Opcodes.ALOAD, var);

            final Label end = new Label();
            mv.visitJumpInsn(Opcodes.IFNONNULL, end);

            generateThrow(IAE_CLASS_NAME, getThrowMessage(notNullParam), end);
        }
    }
    mv.visitCode();
}

---

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