Example usage for org.objectweb.asm MethodVisitor visitLocalVariable

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

Introduction

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

Prototype

public void visitLocalVariable(final String name, final String descriptor, final String signature,
        final Label start, final Label end, final int index) 

Source Link

Document

Visits a local variable declaration.

Usage

From source file:test_classes.JVMCompiler.java

License:Open Source License

public static byte[] dump() throws Exception {

    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);

    // Visit the class itself
    {/*w w  w  .  j  av a2s.com*/
        cw.visit(V1_7, // Java 1.7
                ACC_PUBLIC, // public class
                "asm/Test", // package and name
                null, // signature (null means not generic)
                "java/lang/Object", // superclass
                new String[] {}); // interfaces
    }

    // Build the constructor
    {
        MethodVisitor con = cw.visitMethod(ACC_PUBLIC, // public method
                "<init>", // method name
                "()V", // descriptor
                null, // signature (null means not generic)
                null); // exceptions (array of strings)

        con.visitCode(); // Start the code for this method
        con.visitVarInsn(ALOAD, 0); // Load "this" onto the stack

        con.visitMethodInsn(INVOKESPECIAL, // Invoke an instance method (non-virtual)
                "java/lang/Object", // Class on which the method is defined
                "<init>", // Name of the method
                "()V", // Descriptor
                false); // Is this class an interface?

        con.visitInsn(RETURN); // End the constructor method
        con.visitMaxs(1, 1); // Specify max stack and local vars
    }

    {
        /* Build 'add' method */
        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, // public method
                "add", // name
                "(I)V", // descriptor
                null, // signature (null means not generic)
                null); // exceptions (array of strings)

        mv.visitCode();

        Label lMethod0 = new Label();
        mv.visitLabel(lMethod0);

        //   mv.visitLdcInsn();

        mv.visitInsn(RETURN); // Return integer from top of stack
        Label lmethod2 = new Label();
        mv.visitLabel(lmethod2);
        mv.visitLocalVariable("this", "Lasm/TestCode;", null, lMethod0, lmethod2, 0);
        mv.visitLocalVariable("x", "I", null, lMethod0, lmethod2, 1);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }

    cw.visitEnd();

    // DynamicClassLoader loader = new DynamicClassLoader();
    // Class<?> clazz = loader.defineClass("asm.Test", cw.toByteArray());
    //    System.out.println(clazz.getName());
    //  GeneratedInterface calc = (GeneratedInterface)clazz.newInstance();

    //  calc.add();
    // System.out.println("2 + 2 = ");

    return cw.toByteArray();
}

From source file:vanilla.java.collections.impl.GenerateHugeArrays.java

License:Apache License

public static byte[] dumpArrayList(TypeModel tm) {
    ClassWriter cw = new ClassWriter(0);
    FieldVisitor fv;/*from  w  w w . j ava2  s . co  m*/
    MethodVisitor mv;

    Class interfaceClass = tm.type();
    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 (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();
        }
    }
    List<FieldModel> fields = new ArrayList<FieldModel>();
    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "(L" + collections + "HugeArrayBuilder;)V", null, null);
        mv.visitCode();
        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");
        Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLineNumber(29, l1);

        for (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);
        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();
        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);
        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();
        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);
        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();
        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);
        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();
        Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(57, l0);
        for (FieldModel fm : fields) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, name + "ArrayList", fm.fieldName() + "FieldModel", fm.bcLModelType());
            mv.visitMethodInsn(INVOKEVIRTUAL, fm.bcModelType(), "compactStart", "()V");
        }
        Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLineNumber(58, l1);
        mv.visitInsn(RETURN);
        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();
        Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(65, l0);
        for (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");
        }
        Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLineNumber(66, l1);
        mv.visitInsn(RETURN);
        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();
        Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(69, l0);
        for (FieldModel fm : fields) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, name + "ArrayList", fm.fieldName() + "FieldModel", fm.bcLModelType());
            mv.visitMethodInsn(INVOKEVIRTUAL, fm.bcModelType(), "compactEnd", "()V");
        }
        Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLineNumber(70, l1);
        mv.visitInsn(RETURN);
        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();
        Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(74, l0);
        for (FieldModel fm : fields) {
            mv.visitVarInsn(ALOAD, 0);
            mv.visitFieldInsn(GETFIELD, name + "ArrayList", fm.fieldName() + "FieldModel", fm.bcLModelType());
            mv.visitMethodInsn(INVOKEVIRTUAL, fm.bcModelType(), "clear", "()V");
        }
        Label l3 = new Label();
        mv.visitLabel(l3);
        mv.visitLineNumber(77, l3);
        mv.visitInsn(RETURN);
        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();
        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);
        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();
        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);
        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();
        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);
        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();
        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);
        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:vanilla.java.collections.impl.GenerateHugeArrays.java

License:Apache License

public static byte[] dumpAllocation(TypeModel tm) {

    ClassWriter cw = new ClassWriter(0);
    FieldVisitor fv;//from w  w w. java 2  s  .  c om
    MethodVisitor mv;

    Class interfaceClass = tm.type();
    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 (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();
        Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(46, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");

        for (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);
        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();
        Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(62, l0);
        for (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");
            }
        }
        Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLineNumber(63, l1);
        mv.visitInsn(RETURN);
        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();
        Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(66, l0);
        for (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");

        }
        Label l3 = new Label();
        mv.visitLabel(l3);
        mv.visitLineNumber(69, l3);
        mv.visitInsn(RETURN);
        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();
        Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(76, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "finalize", "()V");
        Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLineNumber(77, l1);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, name + "Allocation", "destroy", "()V");
        Label l2 = new Label();
        mv.visitLabel(l2);
        mv.visitLineNumber(78, l2);
        mv.visitInsn(RETURN);
        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:vanilla.java.collections.impl.GenerateHugeArrays.java

License:Apache License

public static byte[] dumpElement(TypeModel tm) {

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

    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();
        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");
        Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLineNumber(35, l1);
        mv.visitInsn(RETURN);
        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 (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();
        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);
        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();
        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));
        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();
        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;");
        Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLineNumber(171, l1);
        mv.visitInsn(RETURN);
        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:vanilla.java.collections.impl.GenerateHugeArrays.java

License:Apache License

private static void appendToStringHashCodeEqualsCopyOf(TypeModel tm, ClassWriter cw, String name2,
        boolean hasListField) {
    String name = tm.bcType();/*from   w  w  w.  j av  a  2s  .c o  m*/
    MethodVisitor mv;
    {
        mv = cw.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null);
        mv.visitCode();
        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 (FieldModel fm : tm.fields()) {
            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);
        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();
        Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(194, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        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);
        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;");
        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);
        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
            @Override
            public int compare(FieldModel o1, FieldModel o2) {
                return o2.equalsPreference() - o1.equalsPreference();
            }
        });
        for (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());
            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);
        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();
        Label l0 = new Label();
        mv.visitLabel(l0);
        int count = 0;
        for (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);
        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();
        Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(240, l0);

        boolean copySimpleValues = false;
        for (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;
            }
        }
        Label l4 = new Label();
        Label l6 = new Label();
        if (copySimpleValues) {
            Label l3 = new Label();
            mv.visitLabel(l3);
            mv.visitLineNumber(243, l3);
            mv.visitVarInsn(ALOAD, 1);
            mv.visitTypeInsn(INSTANCEOF, name2);
            mv.visitJumpInsn(IFEQ, l4);
            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 (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);
                }
            }
        }
        Label l16 = new Label();
        mv.visitLabel(l16);
        mv.visitLineNumber(238, l16);
        Label l17 = new Label();
        mv.visitJumpInsn(GOTO, l17);
        mv.visitLabel(l4);
        mv.visitLineNumber(241, l4);
        for (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);
        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();
        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);
        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();
        Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(185, l0);
        for (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");
            }
        }
        Label l13 = new Label();
        mv.visitLabel(l13);
        mv.visitLineNumber(288, l13);
        mv.visitInsn(RETURN);
        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();
        Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(287, l0);
        for (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");
        }
        Label l13 = new Label();
        mv.visitLabel(l13);
        mv.visitLineNumber(305, l13);
        mv.visitInsn(RETURN);
        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:vanilla.java.collections.impl.GenerateHugeArrays.java

License:Apache License

public static byte[] dumpImpl(TypeModel tm) {

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

    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 (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();
        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);
        Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLocalVariable("this", "L" + name + "Impl;", null, l0, l1, 0);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    for (FieldModel fm : tm.fields()) {
        mv = cw.visitMethod(ACC_PUBLIC, "set" + fm.titleFieldName(), "(" + fm.bcLFieldType() + ")V", null,
                null);
        mv.visitCode();
        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());
        Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLineNumber(48, l1);
        mv.visitInsn(RETURN);
        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();
        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()));
        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();
        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);
        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();
        Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(180, l0);
        mv.visitInsn(LCONST_0);
        mv.visitInsn(LRETURN);
        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();
        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);
        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;
}