Example usage for org.objectweb.asm MethodVisitor visitInsn

List of usage examples for org.objectweb.asm MethodVisitor visitInsn

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Introduction

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

Prototype

public void visitInsn(final int opcode)

Source Link

Document

Visits a zero operand instruction.

Usage

From source file:com.toolazydogs.maiden.agent.asm.AsmUtils.java

License:Apache License

/**
 * Generates the instruction to push the given value on the stack.
 *
 * @param methodVisitor the visitor to which to send the instruction
 * @param value         the value to be pushed on the stack.
 *//*from www.j a  v  a  2  s  . c o  m*/
public static void push(MethodVisitor methodVisitor, int value) {
    if (value >= -1 && value <= 5) {
        methodVisitor.visitInsn(Opcodes.ICONST_0 + value);
    } else if (value >= Byte.MIN_VALUE && value <= Byte.MAX_VALUE) {
        methodVisitor.visitIntInsn(Opcodes.BIPUSH, value);
    } else if (value >= Short.MIN_VALUE && value <= Short.MAX_VALUE) {
        methodVisitor.visitIntInsn(Opcodes.SIPUSH, value);
    } else {
        methodVisitor.visitLdcInsn(value);
    }
}

From source file:com.toolazydogs.maiden.agent.asm.AsmUtils.java

License:Apache License

/**
 * Generates the instruction to push the given value on the stack.
 *
 * @param methodVisitor the visitor to which to send the instruction
 * @param value         the value to be pushed on the stack.
 *//*from  w  w  w . j  a  va2 s.  com*/
public static void push(MethodVisitor methodVisitor, long value) {
    if (value == 0L || value == 1L) {
        methodVisitor.visitInsn(Opcodes.LCONST_0 + (int) value);
    } else {
        methodVisitor.visitLdcInsn(value);
    }
}

From source file:com.weibo.lodil.mmap.impl.GenerateHugeArrays.java

License:Apache License

public static byte[] dumpArrayList(final TypeModel tm) {
    final ClassWriter cw = new ClassWriter(0);
    FieldVisitor fv;/*from w w  w  .j a va  2  s  .co  m*/
    MethodVisitor mv;

    final Class interfaceClass = tm.type();
    final String name = interfaceClass.getName().replace('.', '/');

    cw.visit(
            V1_5, ACC_PUBLIC + ACC_SUPER, name + "ArrayList", "L" + collections + "impl/AbstractHugeArrayList<L"
                    + name + ";L" + name + "Allocation;L" + name + "Element;>;",
            collections + "impl/AbstractHugeArrayList", null);

    cw.visitSource(tm.type().getSimpleName() + "ArrayList.java", null);

    for (final FieldModel fm : tm.fields()) {
        if (fm instanceof Enum8FieldModel) {
            fv = cw.visitField(ACC_FINAL, fm.fieldName() + "FieldModel",
                    "L" + collections + "model/Enum8FieldModel;",
                    "L" + collections + "model/Enum8FieldModel<Ljava/lang/annotation/ElementType;>;", null);
            fv.visitEnd();
        } else if (fm instanceof Enumerated16FieldModel) {
            fv = cw.visitField(ACC_FINAL, fm.fieldName() + "FieldModel",
                    "L" + collections + "model/Enumerated16FieldModel;",
                    "L" + collections + "model/Enumerated16FieldModel<Ljava/lang/String;>;", null);
            fv.visitEnd();
        }
    }
    final List<FieldModel> fields = new ArrayList<FieldModel>();
    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "(L" + collections + "HugeArrayBuilder;)V", null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(35, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESPECIAL, collections + "impl/AbstractHugeArrayList", "<init>",
                "(L" + collections + "HugeArrayBuilder;)V");
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLineNumber(29, l1);

        for (final FieldModel fm : tm.fields()) {
            if (fm instanceof Enum8FieldModel) {
                mv.visitVarInsn(ALOAD, 0);
                mv.visitTypeInsn(NEW, fm.bcModelType());
                mv.visitInsn(DUP);
                mv.visitLdcInsn(fm.fieldName());
                mv.visitIntInsn(BIPUSH, fm.fieldNumber());
                mv.visitLdcInsn(Type.getType(fm.bcLFieldType()));
                mv.visitMethodInsn(INVOKESTATIC, fm.bcFieldType(), "values", "()[" + fm.bcLFieldType());
                mv.visitMethodInsn(INVOKESPECIAL, fm.bcModelType(), "<init>",
                        "(Ljava/lang/String;ILjava/lang/Class;[Ljava/lang/Enum;)V");
                mv.visitFieldInsn(PUTFIELD, name + "ArrayList", fm.fieldName() + "FieldModel",
                        fm.bcLModelType());
                mv.visitVarInsn(ALOAD, 0);
                mv.visitFieldInsn(GETFIELD, name + "ArrayList", fm.fieldName() + "FieldModel",
                        fm.bcLModelType());
                mv.visitVarInsn(ALOAD, 1);
                mv.visitMethodInsn(INVOKEVIRTUAL, collections + "HugeArrayBuilder", "baseDirectory",
                        "()Ljava/lang/String;");
                mv.visitMethodInsn(INVOKEVIRTUAL, fm.bcModelType(), "baseDirectory", "(Ljava/lang/String;)V");
                fields.add(fm);

            } else if (fm instanceof Enumerated16FieldModel) {
                mv.visitVarInsn(ALOAD, 0);
                mv.visitTypeInsn(NEW, fm.bcModelType());
                mv.visitInsn(DUP);
                mv.visitLdcInsn(fm.fieldName());
                mv.visitIntInsn(BIPUSH, fm.fieldNumber());
                mv.visitLdcInsn(Type.getType(fm.bcLFieldType()));
                mv.visitMethodInsn(INVOKESPECIAL, fm.bcModelType(), "<init>",
                        "(Ljava/lang/String;ILjava/lang/Class;)V");
                mv.visitFieldInsn(PUTFIELD, name + "ArrayList", fm.fieldName() + "FieldModel",
                        fm.bcLModelType());
                mv.visitVarInsn(ALOAD, 0);
                mv.visitFieldInsn(GETFIELD, name + "ArrayList", fm.fieldName() + "FieldModel",
                        fm.bcLModelType());
                mv.visitVarInsn(ALOAD, 1);
                mv.visitMethodInsn(INVOKEVIRTUAL, collections + "HugeArrayBuilder", "baseDirectory",
                        "()Ljava/lang/String;");
                mv.visitMethodInsn(INVOKEVIRTUAL, fm.bcModelType(), "baseDirectory", "(Ljava/lang/String;)V");
                fields.add(fm);
            }
        }

        mv.visitInsn(RETURN);
        final Label l4 = new Label();
        mv.visitLabel(l4);
        mv.visitLocalVariable("this", "L" + name + "ArrayList;", null, l0, l4, 0);
        mv.visitLocalVariable("hab", "L" + collections + "HugeArrayBuilder;", null, l0, l4, 1);
        mv.visitMaxs(7, 2);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PROTECTED, "createAllocation",
                "(L" + collections + "impl/MappedFileChannel;)L" + name + "Allocation;", null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(43, l0);
        mv.visitTypeInsn(NEW, name + "Allocation");
        mv.visitInsn(DUP);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, name + "ArrayList", "allocationSize", "I");
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKESPECIAL, name + "Allocation", "<init>",
                "(IL" + collections + "impl/MappedFileChannel;)V");
        mv.visitInsn(ARETURN);
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLocalVariable("this", "L" + name + "ArrayList;", null, l0, l1, 0);
        mv.visitLocalVariable("mfc", "L" + collections + "impl/MappedFileChannel;", null, l0, l1, 1);
        mv.visitMaxs(4, 2);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PROTECTED, "createElement", "(J)L" + name + "Element;", null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(48, l0);
        mv.visitTypeInsn(NEW, name + "Element");
        mv.visitInsn(DUP);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitMethodInsn(INVOKESPECIAL, name + "Element", "<init>",
                "(L" + collections + "impl/AbstractHugeArrayList;J)V");
        mv.visitInsn(ARETURN);
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLocalVariable("this", "L" + name + "ArrayList;", null, l0, l1, 0);
        mv.visitLocalVariable("n", "J", null, l0, l1, 1);
        mv.visitMaxs(5, 3);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PROTECTED, "createImpl", "()L" + name + ";", null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(53, l0);
        mv.visitTypeInsn(NEW, name + "Impl");
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, name + "Impl", "<init>", "()V");
        mv.visitInsn(ARETURN);
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLocalVariable("this", "L" + name + "ArrayList;", null, l0, l1, 0);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PROTECTED, "compactStart", "()V", null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(57, l0);
        for (final FieldModel fm : fields) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, name + "ArrayList", fm.fieldName() + "FieldModel", fm.bcLModelType());
            mv.visitMethodInsn(INVOKEVIRTUAL, fm.bcModelType(), "compactStart", "()V");
        }
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLineNumber(58, l1);
        mv.visitInsn(RETURN);
        final Label l2 = new Label();
        mv.visitLabel(l2);
        mv.visitLocalVariable("this", "L" + name + "ArrayList;", null, l0, l2, 0);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PROTECTED, "compactOnAllocation", "(L" + name + "Allocation;J)V", null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(65, l0);
        for (final FieldModel fm : fields) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, name + "ArrayList", fm.fieldName() + "FieldModel", fm.bcLModelType());
            mv.visitVarInsn(ALOAD, 1);
            mv.visitFieldInsn(GETFIELD, name + "Allocation", "m_string", fm.bcLStoreType());
            mv.visitVarInsn(LLOAD, 2);
            mv.visitMethodInsn(INVOKEVIRTUAL, fm.bcModelType(), "compactScan", "(" + fm.bcLStoreType() + "J)V");
        }
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLineNumber(66, l1);
        mv.visitInsn(RETURN);
        final Label l2 = new Label();
        mv.visitLabel(l2);
        mv.visitLocalVariable("this", "L" + name + "ArrayList;", null, l0, l2, 0);
        mv.visitLocalVariable("allocation", "L" + name + "Allocation;", null, l0, l2, 1);
        mv.visitLocalVariable("thisSize", "J", null, l0, l2, 2);
        mv.visitMaxs(4, 4);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PROTECTED, "compactEnd", "()V", null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(69, l0);
        for (final FieldModel fm : fields) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, name + "ArrayList", fm.fieldName() + "FieldModel", fm.bcLModelType());
            mv.visitMethodInsn(INVOKEVIRTUAL, fm.bcModelType(), "compactEnd", "()V");
        }
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLineNumber(70, l1);
        mv.visitInsn(RETURN);
        final Label l2 = new Label();
        mv.visitLabel(l2);
        mv.visitLocalVariable("this", "L" + name + "ArrayList;", null, l0, l2, 0);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "clear", "()V", null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(74, l0);
        for (final FieldModel fm : fields) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, name + "ArrayList", fm.fieldName() + "FieldModel", fm.bcLModelType());
            mv.visitMethodInsn(INVOKEVIRTUAL, fm.bcModelType(), "clear", "()V");
        }
        final Label l3 = new Label();
        mv.visitLabel(l3);
        mv.visitLineNumber(77, l3);
        mv.visitInsn(RETURN);
        final Label l4 = new Label();
        mv.visitLabel(l4);
        mv.visitLocalVariable("this", "L" + name + "ArrayList;", null, l0, l4, 0);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PROTECTED + ACC_BRIDGE + ACC_SYNTHETIC, "createImpl", "()Ljava/lang/Object;",
                null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(29, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, name + "ArrayList", "createImpl", "()L" + name + ";");
        mv.visitInsn(ARETURN);
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLocalVariable("this", "L" + name + "ArrayList;", null, l0, l1, 0);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PROTECTED + ACC_BRIDGE + ACC_SYNTHETIC, "createElement",
                "(J)L" + collections + "impl/AbstractHugeElement;", null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(29, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(LLOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, name + "ArrayList", "createElement", "(J)L" + name + "Element;");
        mv.visitInsn(ARETURN);
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLocalVariable("this", "L" + name + "ArrayList;", null, l0, l1, 0);
        mv.visitLocalVariable("x0", "J", null, l0, l1, 1);
        mv.visitMaxs(3, 3);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PROTECTED + ACC_BRIDGE + ACC_SYNTHETIC, "compactOnAllocation",
                "(L" + collections + "api/HugeAllocation;J)V", null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(29, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitTypeInsn(CHECKCAST, name + "Allocation");
        mv.visitVarInsn(LLOAD, 2);
        mv.visitMethodInsn(INVOKEVIRTUAL, name + "ArrayList", "compactOnAllocation",
                "(L" + name + "Allocation;J)V");
        mv.visitInsn(RETURN);
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLocalVariable("this", "L" + name + "ArrayList;", null, l0, l1, 0);
        mv.visitLocalVariable("x0", "L" + collections + "api/HugeAllocation;", null, l0, l1, 1);
        mv.visitLocalVariable("x1", "J", null, l0, l1, 2);
        mv.visitMaxs(4, 4);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PROTECTED + ACC_BRIDGE + ACC_SYNTHETIC, "createAllocation",
                "(L" + collections + "impl/MappedFileChannel;)L" + collections + "api/HugeAllocation;", null,
                null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(29, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, name + "ArrayList", "createAllocation",
                "(L" + collections + "impl/MappedFileChannel;)L" + name + "Allocation;");
        mv.visitInsn(ARETURN);
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLocalVariable("this", "L" + name + "ArrayList;", null, l0, l1, 0);
        mv.visitLocalVariable("x0", "L" + collections + "impl/MappedFileChannel;", null, l0, l1, 1);
        mv.visitMaxs(2, 2);
        mv.visitEnd();
    }
    cw.visitEnd();
    final byte[] bytes = cw.toByteArray();
    // ClassReader cr = new ClassReader(bytes);
    // cr.accept(new ASMifierClassVisitor(new PrintWriter(System.out)), 0);
    return bytes;
}

From source file:com.weibo.lodil.mmap.impl.GenerateHugeArrays.java

License:Apache License

public static byte[] dumpAllocation(final TypeModel tm) {

    final ClassWriter cw = new ClassWriter(0);
    FieldVisitor fv;//  ww w.j a  v  a 2 s .c om
    MethodVisitor mv;

    final Class interfaceClass = tm.type();
    final String name = interfaceClass.getName().replace('.', '/');

    cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, name + "Allocation", null, "java/lang/Object",
            new String[] { collections + "api/HugeAllocation" });

    cw.visitSource(tm.type().getSimpleName() + "Allocation.java", null);

    for (final FieldModel fm : tm.fields()) {
        fv = cw.visitField(0, "m_" + fm.fieldName(), fm.bcLStoreType(), null, null);
        fv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "(IL" + collections + "impl/MappedFileChannel;)V", null,
                null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(46, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");

        for (final FieldModel fm : tm.fields()) {
            mv.visitVarInsn(ALOAD, 0);

            if (fm instanceof ObjectFieldModel) {
                mv.visitLdcInsn(Type.getType(fm.bcLFieldType()));
                mv.visitVarInsn(ILOAD, 1);
                mv.visitMethodInsn(INVOKESTATIC, fm.bcModelType(), "newArrayOfField",
                        "(Ljava/lang/Class;I)[Ljava/lang/Object;");
                mv.visitTypeInsn(CHECKCAST, fm.bcLStoreType());
            } else {
                mv.visitVarInsn(ILOAD, 1);
                mv.visitVarInsn(ALOAD, 2);
                mv.visitMethodInsn(INVOKESTATIC, fm.bcModelType(), "newArrayOfField",
                        "(IL" + collections + "impl/MappedFileChannel;)" + fm.bcLStoreType());
            }
            mv.visitFieldInsn(PUTFIELD, name + "Allocation", "m_" + fm.fieldName(), fm.bcLStoreType());
        }

        mv.visitInsn(RETURN);
        final Label l14 = new Label();
        mv.visitLabel(l14);
        mv.visitLocalVariable("this", "L" + name + "Allocation;", null, l0, l14, 0);
        mv.visitLocalVariable("allocationSize", "I", null, l0, l14, 1);
        mv.visitLocalVariable("mfc", "L" + collections + "impl/MappedFileChannel;", null, l0, l14, 2);
        mv.visitMaxs(3, 3);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "clear", "()V", null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(62, l0);
        for (final FieldModel fm : tm.fields()) {
            if (fm instanceof ObjectFieldModel) {
                mv.visitVarInsn(ALOAD, 0);
                mv.visitFieldInsn(GETFIELD, name + "Allocation", "m_" + fm.fieldName(), fm.bcLStoreType());
                mv.visitInsn(ACONST_NULL);
                mv.visitMethodInsn(INVOKESTATIC, "java/util/Arrays", "fill",
                        "([Ljava/lang/Object;Ljava/lang/Object;)V");
            }
        }
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLineNumber(63, l1);
        mv.visitInsn(RETURN);
        final Label l2 = new Label();
        mv.visitLabel(l2);
        mv.visitLocalVariable("this", "L" + name + "Allocation;", null, l0, l2, 0);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "destroy", "()V", null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(66, l0);
        for (final FieldModel fm : tm.fields()) {
            if (!fm.isBufferStore()) {
                continue;
            }
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, name + "Allocation", "m_" + fm.fieldName(), fm.bcLStoreType());
            mv.visitTypeInsn(CHECKCAST, "java/nio/Buffer");
            mv.visitMethodInsn(INVOKESTATIC, GenerateHugeArrays.class.getName().replace('.', '/'), "clean",
                    "(Ljava/nio/Buffer;)V");

        }
        final Label l3 = new Label();
        mv.visitLabel(l3);
        mv.visitLineNumber(69, l3);
        mv.visitInsn(RETURN);
        final Label l4 = new Label();
        mv.visitLabel(l4);
        mv.visitLocalVariable("this", "L" + name + "Allocation;", null, l0, l4, 0);
        mv.visitLocalVariable("m", "Ljava/lang/Object;", null, l3, l4, 1);
        mv.visitMaxs(1, 2);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PROTECTED, "finalize", "()V", null, new String[] { "java/lang/Throwable" });
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(76, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "finalize", "()V");
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLineNumber(77, l1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, name + "Allocation", "destroy", "()V");
        final Label l2 = new Label();
        mv.visitLabel(l2);
        mv.visitLineNumber(78, l2);
        mv.visitInsn(RETURN);
        final Label l3 = new Label();
        mv.visitLabel(l3);
        mv.visitLocalVariable("this", "L" + name + "Allocation;", null, l0, l3, 0);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }

    cw.visitEnd();
    final byte[] bytes = cw.toByteArray();
    // ClassReader cr = new ClassReader(bytes);
    // cr.accept(new ASMifierClassVisitor(new PrintWriter(System.out)), 0);
    return bytes;
}

From source file:com.weibo.lodil.mmap.impl.GenerateHugeArrays.java

License:Apache License

public static byte[] dumpElement(final TypeModel tm) {

    final ClassWriter cw = new ClassWriter(0);
    FieldVisitor fv;/*w ww .  j a v a  2s. c  om*/
    MethodVisitor mv;

    final String name = tm.bcType();

    cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, name + "Element",
            "L" + collections + "impl/AbstractHugeElement<L" + name + "Allocation;>;L" + name
                    + ";Ljava/io/Externalizable;",
            collections + "impl/AbstractHugeElement", new String[] { name, "java/io/Externalizable" });

    cw.visitSource(tm.type().getSimpleName() + "Element.java", null);

    {
        fv = cw.visitField(0, "allocation", "L" + name + "Allocation;", null, null);
        fv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "(L" + collections + "impl/AbstractHugeArrayList;J)V",
                "(L" + collections + "impl/AbstractHugeArrayList<L" + name + ";L" + name + "Allocation;L" + name
                        + "Element;>;J)V",
                null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(34, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitVarInsn(LLOAD, 2);
        mv.visitMethodInsn(INVOKESPECIAL, collections + "impl/AbstractHugeElement", "<init>",
                "(L" + collections + "impl/AbstractHugeContainer;J)V");
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLineNumber(35, l1);
        mv.visitInsn(RETURN);
        final Label l2 = new Label();
        mv.visitLabel(l2);
        mv.visitLocalVariable("this", "L" + name + "Element;", null, l0, l2, 0);
        mv.visitLocalVariable("list", "L" + collections + "impl/AbstractHugeArrayList;", "L" + collections
                + "impl/AbstractHugeArrayList<L" + name + ";L" + name + "Allocation;L" + name + "Element;>;",
                l0, l2, 1);
        mv.visitLocalVariable("n", "J", null, l0, l2, 2);
        mv.visitMaxs(4, 4);
        mv.visitEnd();
    }
    for (final FieldModel fm : tm.fields()) {
        // /////// SETTER //////////

        int maxLocals = 2 + fm.bcFieldSize();

        mv = cw.visitMethod(ACC_PUBLIC, "set" + fm.titleFieldName(), "(" + fm.bcLFieldType() + ")V", null,
                null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(39, l0);

        int invoke = INVOKESTATIC;
        if (fm.virtualGetSet()) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, name + "Element", "container",
                    "L" + collections + "impl/AbstractHugeContainer;");
            mv.visitTypeInsn(CHECKCAST, name + "ArrayList");
            mv.visitFieldInsn(GETFIELD, name + "ArrayList", fm.fieldName() + "FieldModel", fm.bcLModelType());
            invoke = INVOKEVIRTUAL;
            maxLocals++;
        }

        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, name + "Element", "allocation", "L" + name + "Allocation;");
        mv.visitFieldInsn(GETFIELD, name + "Allocation", "m_" + fm.fieldName(), fm.bcLStoreType());
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, name + "Element", "offset", "I");
        mv.visitVarInsn(loadFor(fm.bcType()), 1);

        mv.visitMethodInsn(invoke, fm.bcModelType(), "set",
                "(" + fm.bcLStoreType() + "I" + fm.bcLSetType() + ")V");
        mv.visitInsn(RETURN);
        final Label l2 = new Label();
        mv.visitLabel(l2);
        mv.visitLocalVariable("this", "L" + name + "Element;", null, l0, l2, 0);
        mv.visitLocalVariable("elementType", "Ljava/lang/annotation/ElementType;", null, l0, l2, 1);
        mv.visitMaxs(maxLocals, 1 + fm.bcFieldSize());
        mv.visitEnd();

        // /////// GETTER //////////

        mv = cw.visitMethod(ACC_PUBLIC, "get" + fm.titleFieldName(), "()" + fm.bcLFieldType(), null, null);
        mv.visitCode();
        final Label l3 = new Label();
        mv.visitLabel(l3);
        mv.visitLineNumber(144, l3);

        BCType bcType = fm.bcType();
        if (fm.virtualGetSet()) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, name + "Element", "container",
                    "L" + collections + "impl/AbstractHugeContainer;");
            mv.visitTypeInsn(CHECKCAST, name + "ArrayList");
            mv.visitFieldInsn(GETFIELD, name + "ArrayList", fm.fieldName() + "FieldModel", fm.bcLModelType());
            bcType = BCType.Reference;
        }

        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, name + "Element", "allocation", "L" + name + "Allocation;");
        mv.visitFieldInsn(GETFIELD, name + "Allocation", "m_" + fm.fieldName(), fm.bcLStoreType());
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, name + "Element", "offset", "I");
        mv.visitMethodInsn(invoke, fm.bcModelType(), "get", "(" + fm.bcLStoreType() + "I)" + fm.bcLSetType());
        if (!fm.bcLSetType().equals(fm.bcLFieldType())) {
            mv.visitTypeInsn(CHECKCAST, fm.bcFieldType());
        }
        mv.visitInsn(returnFor(bcType));
        final Label l4 = new Label();
        mv.visitLabel(l4);
        mv.visitLocalVariable("this", "L" + name + "Element;", null, l3, l4, 0);
        mv.visitMaxs(4, 2);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PROTECTED, "updateAllocation0", "(I)V", null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(170, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, name + "Element", "container",
                "L" + collections + "impl/AbstractHugeContainer;");
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, name + "Element", "index", "J");
        mv.visitMethodInsn(INVOKEVIRTUAL, collections + "impl/AbstractHugeContainer", "getAllocation",
                "(J)L" + collections + "api/HugeAllocation;");
        mv.visitTypeInsn(CHECKCAST, name + "Allocation");
        mv.visitFieldInsn(PUTFIELD, name + "Element", "allocation", "L" + name + "Allocation;");
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLineNumber(171, l1);
        mv.visitInsn(RETURN);
        final Label l2 = new Label();
        mv.visitLabel(l2);
        mv.visitLocalVariable("this", "L" + name + "Element;", null, l0, l2, 0);
        mv.visitLocalVariable("allocationSize", "I", null, l0, l2, 1);
        mv.visitMaxs(4, 2);
        mv.visitEnd();
    }
    appendToStringHashCodeEqualsCopyOf(tm, cw, name + "Element", true);
    cw.visitEnd();

    final byte[] bytes = cw.toByteArray();
    // ClassReader cr = new ClassReader(bytes);
    // cr.accept(new ASMifierClassVisitor(new PrintWriter(System.out)), 0);
    return bytes;
}

From source file:com.weibo.lodil.mmap.impl.GenerateHugeArrays.java

License:Apache License

private static void appendToStringHashCodeEqualsCopyOf(final TypeModel tm, final ClassWriter cw,
        final String name2, final boolean hasListField) {
    final String name = tm.bcType();
    MethodVisitor mv;
    {/*from   w  w  w .  j av a  2  s  . c om*/
        mv = cw.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(176, l0);
        mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "()V");
        mv.visitLdcInsn(tm.type().getSimpleName() + "{");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                "(Ljava/lang/String;)Ljava/lang/StringBuilder;");

        String sep = "";
        for (final FieldModel fm : tm.fields()) {
            final boolean text = CharSequence.class.isAssignableFrom(tm.type());

            mv.visitLdcInsn(sep + fm.fieldName() + "=" + (text ? "'" : ""));
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                    "(Ljava/lang/String;)Ljava/lang/StringBuilder;");
            mv.visitVarInsn(ALOAD, 0);
            mv.visitMethodInsn(INVOKEVIRTUAL, name2, "get" + fm.titleFieldName(), "()" + fm.bcLFieldType());
            String appendType = "Ljava/lang/Object;";
            final Class fmType = fm.type();
            if (fmType.isPrimitive()) {
                if ((fmType == byte.class) || (fmType == short.class)) {
                    appendType = "I";
                } else {
                    appendType = fm.bcLFieldType();
                }
            }
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                    "(" + appendType + ")Ljava/lang/StringBuilder;");
            sep = text ? "', " : ", ";
        }
        if (sep.startsWith("'")) {
            mv.visitIntInsn(BIPUSH, 39);
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                    "(C)Ljava/lang/StringBuilder;");
        }
        mv.visitIntInsn(BIPUSH, 125);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(C)Ljava/lang/StringBuilder;");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;");
        mv.visitInsn(ARETURN);
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLocalVariable("this", "L" + name2 + ";", null, l0, l1, 0);
        mv.visitMaxs(3, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "equals", "(Ljava/lang/Object;)Z", null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(194, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        final Label l1 = new Label();
        mv.visitJumpInsn(IF_ACMPNE, l1);
        mv.visitInsn(ICONST_1);
        mv.visitInsn(IRETURN);
        mv.visitLabel(l1);
        mv.visitLineNumber(195, l1);
        mv.visitVarInsn(ALOAD, 1);
        final Label l2 = new Label();
        mv.visitJumpInsn(IFNULL, l2);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;");
        mv.visitVarInsn(ALOAD, 1);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;");
        final Label l3 = new Label();
        mv.visitJumpInsn(IF_ACMPEQ, l3);
        mv.visitLabel(l2);
        mv.visitInsn(ICONST_0);
        mv.visitInsn(IRETURN);
        mv.visitLabel(l3);
        mv.visitLineNumber(197, l3);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitTypeInsn(CHECKCAST, name2);
        mv.visitVarInsn(ASTORE, 2);
        final Label l4 = new Label();
        mv.visitLabel(l4);
        mv.visitLineNumber(199, l4);
        final FieldModel[] fieldModels = tm.fields().clone();
        Arrays.sort(fieldModels, new Comparator<FieldModel>() {
            // reverse sort the preferences to optimise the
            public int compare(final FieldModel o1, final FieldModel o2) {
                return o2.equalsPreference() - o1.equalsPreference();
            }
        });
        for (final FieldModel fm : fieldModels) {
            // System.out.println(fm.fieldName());
            mv.visitVarInsn(ALOAD, 0);
            mv.visitMethodInsn(INVOKEVIRTUAL, name2, "get" + fm.titleFieldName(), "()" + fm.bcLFieldType());
            mv.visitVarInsn(ALOAD, 2);
            mv.visitMethodInsn(INVOKEVIRTUAL, name2, "get" + fm.titleFieldName(), "()" + fm.bcLFieldType());
            final Label l5 = new Label();
            if (fm.isCallsNotEquals()) {
                mv.visitMethodInsn(INVOKESTATIC, fm.bcLModelType(), "notEquals",
                        "(" + fm.bcLSetType() + fm.bcLSetType() + ")Z");
                mv.visitJumpInsn(IFEQ, l5);
            } else {
                mv.visitJumpInsn(IF_ICMPEQ, l5);
            }
            mv.visitInsn(ICONST_0);
            mv.visitInsn(IRETURN);
            mv.visitLabel(l5);
        }

        mv.visitInsn(ICONST_1);
        mv.visitInsn(IRETURN);
        final Label l17 = new Label();
        mv.visitLabel(l17);
        mv.visitLocalVariable("this", "L" + name2 + ";", null, l0, l17, 0);
        mv.visitLocalVariable("o", "Ljava/lang/Object;", null, l0, l17, 1);
        mv.visitLocalVariable("that", "L" + name2 + ";", null, l4, l17, 2);
        mv.visitMaxs(4, 3);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "hashCode", "()I", null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        int count = 0;
        for (final FieldModel fm : tm.fields()) {
            // if (count > 5) break;
            // System.out.println(fm.fieldName());
            if (count > 0) {
                mv.visitIntInsn(BIPUSH, 31);
                mv.visitInsn(IMUL);
            }
            mv.visitVarInsn(ALOAD, 0);
            mv.visitMethodInsn(INVOKEVIRTUAL, name2, "get" + fm.titleFieldName(), "()" + fm.bcLFieldType());
            if (fm.isCallsHashCode()) {
                mv.visitMethodInsn(INVOKESTATIC, fm.bcLModelType(), "hashCode", "(" + fm.bcLSetType() + ")I");
            }

            if (count > 0) {
                mv.visitInsn(IADD);
            }
            count++;
        }
        mv.visitInsn(IRETURN);
        final Label l3 = new Label();
        mv.visitLabel(l3);
        mv.visitLocalVariable("this", "L" + name2 + ";", null, l0, l3, 0);
        mv.visitMaxs(6, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "copyOf", "(L" + name + ";)V", null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(240, l0);

        boolean copySimpleValues = false;
        for (final FieldModel fm : tm.fields()) {
            if (!fm.copySimpleValue() || !hasListField) {
                // if (true) {
                mv.visitVarInsn(ALOAD, 0);
                mv.visitVarInsn(ALOAD, 1);
                mv.visitMethodInsn(INVOKEINTERFACE, name, "get" + fm.titleFieldName(),
                        "()" + fm.bcLFieldType());
                mv.visitMethodInsn(INVOKEVIRTUAL, name2, "set" + fm.titleFieldName(),
                        "(" + fm.bcLFieldType() + ")V");
            } else {
                copySimpleValues = true;
            }
        }
        final Label l4 = new Label();
        final Label l6 = new Label();
        if (copySimpleValues) {
            final Label l3 = new Label();
            mv.visitLabel(l3);
            mv.visitLineNumber(243, l3);
            mv.visitVarInsn(ALOAD, 1);
            mv.visitTypeInsn(INSTANCEOF, name2);
            mv.visitJumpInsn(IFEQ, l4);
            final Label l5 = new Label();
            mv.visitLabel(l5);
            mv.visitLineNumber(238, l5);
            mv.visitVarInsn(ALOAD, 1);
            mv.visitTypeInsn(CHECKCAST, name2);
            mv.visitVarInsn(ASTORE, 2);
            mv.visitLabel(l6);
            mv.visitLineNumber(239, l6);
            mv.visitVarInsn(ALOAD, 2);
            mv.visitFieldInsn(GETFIELD, name2, "container", "L" + collections + "impl/AbstractHugeContainer;");
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, name2, "container", "L" + collections + "impl/AbstractHugeContainer;");
            mv.visitJumpInsn(IF_ACMPNE, l4);
            for (final FieldModel fm : tm.fields()) {
                if (fm.copySimpleValue()) {
                    mv.visitVarInsn(ALOAD, 0);
                    mv.visitFieldInsn(GETFIELD, name2, "allocation", "L" + name + "Allocation;");
                    mv.visitFieldInsn(GETFIELD, name + "Allocation", "m_" + fm.fieldName(), fm.bcLStoreType());
                    mv.visitVarInsn(ALOAD, 0);
                    mv.visitFieldInsn(GETFIELD, name2, "offset", "I");
                    mv.visitVarInsn(ALOAD, 2);
                    mv.visitFieldInsn(GETFIELD, name2, "allocation", "L" + name + "Allocation;");
                    mv.visitFieldInsn(GETFIELD, name + "Allocation", "m_" + fm.fieldName(), fm.bcLStoreType());
                    mv.visitVarInsn(ALOAD, 2);
                    mv.visitFieldInsn(GETFIELD, name2, "offset", "I");
                    mv.visitMethodInsn(INVOKEVIRTUAL, fm.bcStoreType(), "get", "(I)" + fm.bcLStoredType());
                    mv.visitMethodInsn(INVOKEVIRTUAL, fm.bcStoreType(), "put",
                            "(I" + fm.bcLStoredType() + ")" + fm.bcLStoreType());
                    mv.visitInsn(POP);
                }
            }
        }
        final Label l16 = new Label();
        mv.visitLabel(l16);
        mv.visitLineNumber(238, l16);
        final Label l17 = new Label();
        mv.visitJumpInsn(GOTO, l17);
        mv.visitLabel(l4);
        mv.visitLineNumber(241, l4);
        for (final FieldModel fm : tm.fields()) {
            if (fm.copySimpleValue()) {
                mv.visitVarInsn(ALOAD, 0);
                mv.visitVarInsn(ALOAD, 1);
                mv.visitMethodInsn(INVOKEINTERFACE, name, "get" + fm.titleFieldName(),
                        "()" + fm.bcLFieldType());
                mv.visitMethodInsn(INVOKEVIRTUAL, name2, "set" + fm.titleFieldName(),
                        "(" + fm.bcLFieldType() + ")V");
            }
        }
        mv.visitLabel(l17);
        mv.visitLineNumber(251, l17);
        mv.visitInsn(RETURN);
        final Label l27 = new Label();
        mv.visitLabel(l27);
        mv.visitLocalVariable("this", "L" + name2 + ";", null, l0, l27, 0);
        mv.visitLocalVariable("t", "L" + name + ";", null, l0, l27, 1);
        if (copySimpleValues) {
            mv.visitLocalVariable("mte", "L" + name + "Element;", null, l6, l4, 2);
        }
        mv.visitMaxs(4, 3);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, "copyOf", "(Ljava/lang/Object;)V", null,
                null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(275, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitTypeInsn(CHECKCAST, name);
        mv.visitMethodInsn(INVOKEVIRTUAL, name2, "copyOf", "(L" + name + ";)V");
        mv.visitInsn(RETURN);
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLocalVariable("this", "L" + name2 + ";", null, l0, l1, 0);
        mv.visitLocalVariable("x0", "Ljava/lang/Object;", null, l0, l1, 1);
        mv.visitMaxs(2, 2);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "writeExternal", "(Ljava/io/ObjectOutput;)V", null,
                new String[] { "java/io/IOException" });
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(185, l0);
        for (final FieldModel fm : tm.fields()) {
            mv.visitVarInsn(ALOAD, 1);
            if (fm.bcLSetType().equals(fm.bcLFieldType())) {
                mv.visitVarInsn(ALOAD, 0);
                mv.visitMethodInsn(INVOKEVIRTUAL, name2, "get" + fm.titleFieldName(), "()" + fm.bcLFieldType());
                mv.visitMethodInsn(INVOKESTATIC, fm.bcModelType(), "write",
                        "(Ljava/io/ObjectOutput;" + fm.bcLSetType() + ")V");
            } else {
                mv.visitLdcInsn(Type.getType(fm.bcLFieldType()));
                mv.visitVarInsn(ALOAD, 0);
                mv.visitMethodInsn(INVOKEVIRTUAL, name2, "get" + fm.titleFieldName(), "()" + fm.bcLFieldType());
                mv.visitMethodInsn(INVOKESTATIC, fm.bcModelType(), "write",
                        "(Ljava/io/ObjectOutput;Ljava/lang/Class;" + fm.bcLSetType() + ")V");
            }
        }
        final Label l13 = new Label();
        mv.visitLabel(l13);
        mv.visitLineNumber(288, l13);
        mv.visitInsn(RETURN);
        final Label l14 = new Label();
        mv.visitLabel(l14);
        mv.visitLocalVariable("this", "L" + name2 + ';', null, l0, l14, 0);
        mv.visitLocalVariable("out", "Ljava/io/ObjectOutput;", null, l0, l14, 1);
        mv.visitMaxs(4, 2);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "readExternal", "(Ljava/io/ObjectInput;)V", null,
                new String[] { "java/io/IOException", "java/lang/ClassNotFoundException" });
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(287, l0);
        for (final FieldModel fm : tm.fields()) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitVarInsn(ALOAD, 1);
            if (fm.bcLSetType().equals(fm.bcLFieldType())) {
                mv.visitMethodInsn(INVOKESTATIC, fm.bcModelType(), "read",
                        "(Ljava/io/ObjectInput;)" + fm.bcLSetType());
            } else {
                mv.visitLdcInsn(Type.getType(fm.bcLFieldType()));
                mv.visitMethodInsn(INVOKESTATIC, fm.bcModelType(), "read",
                        "(Ljava/io/ObjectInput;Ljava/lang/Class;)" + fm.bcLSetType());
                mv.visitTypeInsn(CHECKCAST, fm.bcFieldType());
            }
            mv.visitMethodInsn(INVOKEVIRTUAL, name2, "set" + fm.titleFieldName(),
                    "(" + fm.bcLFieldType() + ")V");
        }
        final Label l13 = new Label();
        mv.visitLabel(l13);
        mv.visitLineNumber(305, l13);
        mv.visitInsn(RETURN);
        final Label l14 = new Label();
        mv.visitLabel(l14);
        mv.visitLocalVariable("this", "L" + name2 + ";", null, l0, l14, 0);
        mv.visitLocalVariable("in", "Ljava/io/ObjectInput;", null, l0, l14, 1);
        mv.visitMaxs(3, 2);
        mv.visitEnd();
    }
}

From source file:com.weibo.lodil.mmap.impl.GenerateHugeArrays.java

License:Apache License

public static byte[] dumpImpl(final TypeModel tm) {

    final ClassWriter cw = new ClassWriter(0);
    FieldVisitor fv;//from   w  w  w. j av a  2 s . c o m
    MethodVisitor mv;

    final String name = tm.bcType();

    cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, name + "Impl",
            "Ljava/lang/Object;L" + name + ";L" + collections + "api/HugeElement<L" + name
                    + ";>;Ljava/io/Externalizable;",
            "java/lang/Object",
            new String[] { name, collections + "api/HugeElement", "java/io/Externalizable" });

    cw.visitSource(tm.getClass().getSimpleName() + "Impl.java", null);

    for (final FieldModel fm : tm.fields()) {
        fv = cw.visitField(ACC_PRIVATE, "m_" + fm.fieldName(), fm.bcLFieldType(), null, null);
        fv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(30, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
        mv.visitInsn(RETURN);
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLocalVariable("this", "L" + name + "Impl;", null, l0, l1, 0);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    for (final FieldModel fm : tm.fields()) {
        mv = cw.visitMethod(ACC_PUBLIC, "set" + fm.titleFieldName(), "(" + fm.bcLFieldType() + ")V", null,
                null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(47, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(loadFor(fm.bcType()), 1);
        mv.visitFieldInsn(PUTFIELD, name + "Impl", "m_" + fm.fieldName(), fm.bcLFieldType());
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLineNumber(48, l1);
        mv.visitInsn(RETURN);
        final Label l2 = new Label();
        mv.visitLabel(l2);
        mv.visitLocalVariable("this", "L" + name + "Impl;", null, l0, l2, 0);
        mv.visitLocalVariable("b", fm.bcLFieldType(), null, l0, l2, 1);
        mv.visitMaxs(1 + fm.bcFieldSize(), 1 + fm.bcFieldSize());
        mv.visitEnd();

        mv = cw.visitMethod(ACC_PUBLIC, "get" + fm.titleFieldName(), "()" + fm.bcLFieldType(), null, null);
        mv.visitCode();
        final Label l3 = new Label();
        mv.visitLabel(l3);
        mv.visitLineNumber(45, l3);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, name + "Impl", "m_" + fm.fieldName(), fm.bcLFieldType());
        mv.visitInsn(returnFor(fm.bcType()));
        final Label l4 = new Label();
        mv.visitLabel(l4);
        mv.visitLocalVariable("this", "L" + name + "Impl;", null, l3, l4, 0);
        mv.visitMaxs(1 + fm.bcFieldSize(), 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "index", "(J)V", null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(175, l0);
        mv.visitTypeInsn(NEW, "java/lang/UnsupportedOperationException");
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/UnsupportedOperationException", "<init>", "()V");
        mv.visitInsn(ATHROW);
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLocalVariable("this", "L" + name + "Impl;", null, l0, l1, 0);
        mv.visitLocalVariable("n", "J", null, l0, l1, 1);
        mv.visitMaxs(2, 3);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "index", "()J", null, null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(180, l0);
        mv.visitInsn(LCONST_0);
        mv.visitInsn(LRETURN);
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLocalVariable("this", "L" + name + "Impl;", null, l0, l1, 0);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    appendToStringHashCodeEqualsCopyOf(tm, cw, name + "Impl", false);

    {
        mv = cw.visitMethod(ACC_PUBLIC, "hugeElementType", "()L" + collections + "api/HugeElementType;", null,
                null);
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(236, l0);
        mv.visitFieldInsn(GETSTATIC, collections + "api/HugeElementType", "BeanImpl",
                "L" + collections + "api/HugeElementType;");
        mv.visitInsn(ARETURN);
        final Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLocalVariable("this", "L" + name + "Impl;", null, l0, l1, 0);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    cw.visitEnd();

    final byte[] bytes = cw.toByteArray();
    // ClassReader cr = new ClassReader(bytes);
    // cr.accept(new ASMifierClassVisitor(new PrintWriter(System.out)), 0);

    return bytes;
}

From source file:com.yahoo.yqlplus.engine.internal.bytecode.ClassAdapterGenerator.java

private void generateGetProperty(TypeWidget targetType, final PropertyAdapter propertyAdapter) {
    MethodGenerator method = createStaticMethod("getProperty");
    method.setReturnType(AnyTypeWidget.getInstance());
    final BytecodeExpression targetExpr = method.addArgument("target", targetType).read();
    final BytecodeExpression propertyName = method.addArgument("property", BaseTypeAdapter.STRING).read();
    method.add(new BytecodeSequence() {
        @Override//from w w  w  . ja va  2 s  . c  o m
        public void generate(CodeEmitter code) {
            Map<String, Label> labelMap = Maps.newLinkedHashMap();
            Label defaultCase = new Label();
            Label done = new Label();
            for (PropertyAdapter.Property property : propertyAdapter.getProperties()) {
                labelMap.put(property.name, new Label());
            }
            propertyName.generate(code);
            code.emitStringSwitch(labelMap, defaultCase, true);
            MethodVisitor mv = code.getMethodVisitor();
            for (PropertyAdapter.Property property : propertyAdapter.getProperties()) {
                mv.visitLabel(labelMap.get(property.name));
                propertyAdapter.property(targetExpr, property.name).read().generate(code);
                code.box(property.type);
                mv.visitJumpInsn(Opcodes.GOTO, done);
            }
            mv.visitLabel(defaultCase);
            new NullExpr(AnyTypeWidget.getInstance()).generate(code);
            mv.visitLabel(done);
            mv.visitInsn(Opcodes.ARETURN);
        }
    });
}

From source file:com.yahoo.yqlplus.engine.internal.bytecode.ClassAdapterGenerator.java

private void generatePutProperty(TypeWidget targetType, final PropertyAdapter propertyAdapter) {
    MethodGenerator method = createStaticMethod("putProperty");
    final BytecodeExpression targetExpr = method.addArgument("target", targetType).read();
    final BytecodeExpression propertyName = method.addArgument("property", BaseTypeAdapter.STRING).read();
    final BytecodeExpression valueExpr = method.addArgument("value", AnyTypeWidget.getInstance()).read();
    method.add(new BytecodeSequence() {
        @Override/*from  w  ww.ja  v  a  2 s .co  m*/
        public void generate(CodeEmitter code) {
            Map<String, Label> labelMap = Maps.newLinkedHashMap();
            Label done = new Label();
            for (PropertyAdapter.Property property : propertyAdapter.getProperties()) {
                labelMap.put(property.name, new Label());
            }
            propertyName.generate(code);
            code.emitStringSwitch(labelMap, done, true);
            MethodVisitor mv = code.getMethodVisitor();
            for (PropertyAdapter.Property property : propertyAdapter.getProperties()) {
                mv.visitLabel(labelMap.get(property.name));
                AssignableValue av = propertyAdapter.property(targetExpr, property.name);
                try {
                    code.exec(av.write(new BytecodeCastExpression(property.type, valueExpr)));
                } catch (UnsupportedOperationException ignored) {
                    // can't write what isn't writable
                }
                mv.visitJumpInsn(Opcodes.GOTO, done);
            }
            mv.visitLabel(done);
            mv.visitInsn(Opcodes.RETURN);
        }
    });
}

From source file:com.yahoo.yqlplus.engine.internal.bytecode.DynamicBootstrapUnit.java

public void init() {
    ProgramValueTypeAdapter types = environment.getValueTypeAdapter();
    BytecodeExpression classSource = types.constant(getEnvironment());
    TypeWidget dynamicLinker = types.adaptInternal(DynamicLinker.class);
    FieldDefinition field = createField(dynamicLinker, "bootstrap");
    field.addModifier(Opcodes.ACC_STATIC | Opcodes.ACC_FINAL);
    MethodGenerator sl = createMethod("<clinit>");
    sl.setModifier(Opcodes.ACC_STATIC);/*from w  w w. jav  a2 s  .  c  om*/
    sl.add(classSource);
    sl.add(new BytecodeSequence() {
        @Override
        public void generate(CodeEmitter code) {
            final MethodVisitor mv = code.getMethodVisitor();
            mv.visitMethodInsn(Opcodes.INVOKESTATIC, Type.getInternalName(Dynamic.class), "createDynamicLinker",
                    MethodType.methodType(DynamicLinker.class, ASMClassSource.class).toMethodDescriptorString(),
                    false);
            mv.visitFieldInsn(Opcodes.PUTSTATIC, Dynamic.DYNAMIC_INTERNAL_NAME, "bootstrap",
                    Type.getDescriptor(DynamicLinker.class));
            mv.visitInsn(Opcodes.RETURN);

        }
    });

    MethodGenerator mgen = createStaticMethod(Dynamic.DYNAMIC_BOOTSTRAP_METHOD);
    TypeWidget callSite = types.adaptInternal(CallSite.class);
    TypeWidget lookup = types.adaptInternal(MethodHandles.Lookup.class);
    TypeWidget methodType = types.adaptInternal(MethodType.class);
    mgen.setReturnType(callSite);
    AssignableValue lu = mgen.addArgument("lookup", lookup);
    AssignableValue name = mgen.addArgument("name", BaseTypeAdapter.STRING);
    AssignableValue sig = mgen.addArgument("sig", methodType);
    final String desc = MethodType.methodType(CallSite.class, // ...that will return a CallSite object, ...
            MethodHandles.Lookup.class, // ... when given a lookup object, ...
            String.class, // ... the operation name, ...
            MethodType.class, // ... and the signature at the call site.
            DynamicLinker.class).toMethodDescriptorString();

    mgen.add(lu.read());
    mgen.add(name.read());
    mgen.add(sig.read());

    mgen.add(new BytecodeSequence() {
        @Override
        public void generate(CodeEmitter code) {
            final MethodVisitor mv = code.getMethodVisitor();
            mv.visitFieldInsn(Opcodes.GETSTATIC, Dynamic.DYNAMIC_INTERNAL_NAME, "bootstrap",
                    Type.getDescriptor(DynamicLinker.class));
            mv.visitMethodInsn(Opcodes.INVOKESTATIC, Type.getInternalName(Dynamic.class), "link", desc, false);
            mv.visitInsn(Opcodes.ARETURN);
        }
    });

}