当前位置: 首页>>代码示例>>Java>>正文

Java MethodVisitor.visitLdcInsn方法代码示例

本文整理汇总了Java中jdk.internal.org.objectweb.asm.MethodVisitor.visitLdcInsn方法的典型用法代码示例。如果您正苦于以下问题：Java MethodVisitor.visitLdcInsn方法的具体用法？Java MethodVisitor.visitLdcInsn怎么用？Java MethodVisitor.visitLdcInsn使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类jdk.internal.org.objectweb.asm.MethodVisitor的用法示例。


在下文中一共展示了MethodVisitor.visitLdcInsn方法的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: ldc

import jdk.internal.org.objectweb.asm.MethodVisitor; //导入方法依赖的package包/类
@Override
public Type ldc(final MethodVisitor method, final Object c) {
    if (c == null) {
        method.visitInsn(ACONST_NULL);
    } else if (c instanceof Undefined) {
        return loadUndefined(method);
    } else if (c instanceof String) {
        method.visitLdcInsn(c);
        return STRING;
    } else if (c instanceof Handle) {
        method.visitLdcInsn(c);
        return Type.typeFor(MethodHandle.class);
    } else {
        throw new UnsupportedOperationException("implementation missing for class " + c.getClass() + " value=" + c);
    }

    return Type.OBJECT;
}
开发者ID:SunburstApps，项目名称:OpenJSharp，代码行数:19，代码来源:ObjectType.java

示例2: generateBootstrapMethod

import jdk.internal.org.objectweb.asm.MethodVisitor; //导入方法依赖的package包/类
private Handle generateBootstrapMethod(Handle h) {
    String bootstrapName = "bootstrapMethod";
    MethodType bootstrapType = MethodType.methodType(CallSite.class, MethodHandles.Lookup.class, String.class, MethodType.class);

    MethodVisitor bmv = cv.visitMethod(ACC_PUBLIC | ACC_STATIC, bootstrapName, bootstrapType.toMethodDescriptorString(), null, null);
    bmv.visitCode();

    String constCallSite = "java/lang/invoke/ConstantCallSite";
    bmv.visitTypeInsn(NEW, constCallSite);
    bmv.visitInsn(DUP);

    bmv.visitLdcInsn(h);

    bmv.visitMethodInsn(INVOKESPECIAL, constCallSite, "<init>", "(Ljava/lang/invoke/MethodHandle;)V", false);
    bmv.visitInsn(ARETURN);

    bmv.visitMaxs(0,0);
    bmv.visitEnd();

    return new Handle(H_INVOKESTATIC, ownerClassName, bootstrapName, bootstrapType.toMethodDescriptorString());
}
开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:22，代码来源:Method.java

示例3: getClassFile

import jdk.internal.org.objectweb.asm.MethodVisitor; //导入方法依赖的package包/类
/**
 * Generates a class of the following shape:
 *     static class T {
 *         @DontInline public static int f() { return $r; }
 *     }
 */
static byte[] getClassFile(int r) {
    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
    MethodVisitor mv;
    cw.visit(52, ACC_PUBLIC | ACC_SUPER, NAME, null, "java/lang/Object", null);
    {
        mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "f", "()I", null, null);
        mv.visitAnnotation("Ljdk/internal/vm/annotation/DontInline;", true);
        mv.visitCode();
        mv.visitLdcInsn(r);
        mv.visitInsn(IRETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
    cw.visitEnd();
    return cw.toByteArray();
}
开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:23，代码来源:RedefineTest.java

示例4: loadClassData

import jdk.internal.org.objectweb.asm.MethodVisitor; //导入方法依赖的package包/类
private byte[] loadClassData(String name) throws Exception {
    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv;
    switch (name) {
        case INTERFACE_NAME:
            cw.visit(V1_8, ACC_ABSTRACT | ACC_INTERFACE | ACC_PUBLIC, INTERFACE_NAME, null, "java/lang/Object", null);
            {
                mv = cw.visitMethod(ACC_PRIVATE, "privInstance", "()I", null, null);
                mv.visitCode();
                mv.visitLdcInsn(EXPECTED);
                mv.visitInsn(IRETURN);
                mv.visitMaxs(1, 1);
                mv.visitEnd();
            }
            break;
        case CLASS_NAME:
            cw.visit(52, ACC_SUPER | ACC_PUBLIC, CLASS_NAME, null, "java/lang/Object", new String[]{INTERFACE_NAME});
            {
                mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
                mv.visitCode();
                mv.visitVarInsn(ALOAD, 0);
                mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
                mv.visitInsn(RETURN);
                mv.visitMaxs(1, 1);
                mv.visitEnd();
            }
            break;
        default:
            break;
    }
    cw.visitEnd();

    return cw.toByteArray();
}
开发者ID:lambdalab-mirror，项目名称:jdk8u-jdk，代码行数:35，代码来源:TestPrivateInterfaceMethodReflect.java

示例5: dumpT1

import jdk.internal.org.objectweb.asm.MethodVisitor; //导入方法依赖的package包/类
public static byte[] dumpT1() {
    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv;

    cw.visit(52, ACC_PUBLIC | ACC_SUPER, "p1/T1", null, "java/lang/Object", null);
    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
        mv.visitInsn(RETURN);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "m", "()I", null, null);
        mv.visitCode();
        mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
        mv.visitLdcInsn("p1/T1.m()");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "print", "(Ljava/lang/String;)V", false);
        mv.visitIntInsn(BIPUSH, 3);
        mv.visitInsn(IRETURN);
        mv.visitMaxs(2, 1);
        mv.visitEnd();
    }
    cw.visitEnd();

    return cw.toByteArray();
}
开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:30，代码来源:TestConcreteClassWithAbstractMethod.java

示例6: createThrowRuntimeExceptionCode

import jdk.internal.org.objectweb.asm.MethodVisitor; //导入方法依赖的package包/类
private static void createThrowRuntimeExceptionCode(MethodVisitor mv, String msg) {
    mv.visitTypeInsn(NEW, "java/lang/RuntimeException");
    mv.visitInsn(DUP);
    mv.visitLdcInsn(msg);
    mv.visitMethodInsn(INVOKESPECIAL, "java/lang/RuntimeException", "<init>", "(Ljava/lang/String;)V");
    mv.visitInsn(ATHROW);
}
开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:8，代码来源:RedefineRunningMethodsWithResolutionErrors.java

示例7: initField

import jdk.internal.org.objectweb.asm.MethodVisitor; //导入方法依赖的package包/类
void initField(MethodVisitor mv) {
    if (hasDefaultValue) {
        return; // Nothing to do
    }
    if (!isStatic()) {
        mv.visitVarInsn(ALOAD, 0);
    }
    mv.visitLdcInsn(type.value);
    mv.visitFieldInsn((isStatic() ? PUTSTATIC : PUTFIELD), className, FIELD_NAME, fieldDesc);
}
开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:11，代码来源:UnsafeGetConstantField.java

示例8: dumpP1B

import jdk.internal.org.objectweb.asm.MethodVisitor; //导入方法依赖的package包/类
public static byte[] dumpP1B() {

        ClassWriter cw = new ClassWriter(0);
        MethodVisitor mv;

        cw.visit(V1_8, ACC_PUBLIC + ACC_SUPER, "P1/B", null, "P1/A", null);

        {
            mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 0);
            mv.visitMethodInsn(INVOKESPECIAL, "P1/A", "<init>", "()V", false);
            mv.visitInsn(RETURN);
            mv.visitMaxs(1, 1);
            mv.visitEnd();
        }
        {
            mv = cw.visitMethod(0, "m", "()I", null, null);
            mv.visitCode();
            mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
            mv.visitLdcInsn("B.m");
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false);
            mv.visitIntInsn(BIPUSH, 2);
            mv.visitInsn(IRETURN);
            mv.visitMaxs(2, 1);
            mv.visitEnd();
        }
        cw.visitEnd();

        return cw.toByteArray();
    }
开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:32，代码来源:TransitiveOverrideCFV50.java

示例9: accept

import jdk.internal.org.objectweb.asm.MethodVisitor; //导入方法依赖的package包/类
@Override
public void accept(final MethodVisitor mv) {
    mv.visitLdcInsn(cst);
    acceptAnnotations(mv);
}
开发者ID:SunburstApps，项目名称:OpenJSharp，代码行数:6，代码来源:LdcInsnNode.java

示例10: loadUndefined

import jdk.internal.org.objectweb.asm.MethodVisitor; //导入方法依赖的package包/类
@Override
public Type loadUndefined(final MethodVisitor method) {
    method.visitLdcInsn(UNDEFINED_INT);
    return INT;
}
开发者ID:SunburstApps，项目名称:OpenJSharp，代码行数:6，代码来源:IntType.java

示例11: loadUndefined

import jdk.internal.org.objectweb.asm.MethodVisitor; //导入方法依赖的package包/类
@Override
public Type loadUndefined(final MethodVisitor method) {
    method.visitLdcInsn(UNDEFINED_INT);
    return BOOLEAN;
}
开发者ID:SunburstApps，项目名称:OpenJSharp，代码行数:6，代码来源:BooleanType.java

示例12: dumpP2C

import jdk.internal.org.objectweb.asm.MethodVisitor; //导入方法依赖的package包/类
public static byte[] dumpP2C() {

        ClassWriter cw = new ClassWriter(0);
        MethodVisitor mv;

        cw.visit(V1_6, ACC_PUBLIC + ACC_SUPER, "P2/C", null, "P1/B", null);

        {
            mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 0);
            mv.visitMethodInsn(INVOKESPECIAL, "P1/B", "<init>", "()V", false);
            mv.visitInsn(RETURN);
            mv.visitMaxs(1, 1);
            mv.visitEnd();
        }
        {
            mv = cw.visitMethod(ACC_PUBLIC, "m", "()I", null, null);
            mv.visitCode();
            mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
            mv.visitLdcInsn("P2/C.m");
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false);
            mv.visitIntInsn(BIPUSH, 3);
            mv.visitInsn(IRETURN);
            mv.visitMaxs(2, 1);
            mv.visitEnd();
        }
        {
            mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "test", "()I", null, null);
            mv.visitCode();
            mv.visitTypeInsn(NEW, "P2/C");
            mv.visitInsn(DUP);
            mv.visitMethodInsn(INVOKESPECIAL, "P2/C", "<init>", "()V", false);
            mv.visitMethodInsn(INVOKEVIRTUAL, "P1/A", "m", "()I", false);
            mv.visitInsn(IRETURN);
            mv.visitMaxs(3, 2);
            mv.visitEnd();
        }

        cw.visitEnd();

        return cw.toByteArray();
    }
开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:44，代码来源:TransitiveOverrideCFV50.java

示例13: ClassWriter

import jdk.internal.org.objectweb.asm.MethodVisitor; //导入方法依赖的package包/类
/**
 * Returns the bytes for a class with name d_name (presumably "D" in some
 * package), extending some class with name sub_what, implementing p.I,
 * and defining two methods m() and m(11args) with access method_acc.
 *
 * @param d_name      Name of class that is defined
 * @param sub_what    Name of class that it extends
 * @param method_acc  Accessibility of method(s) m in defined class.
 * @return
 * @throws Exception
 */
public static byte[] bytesForSomeDsubSomethingSomeAccess
(String d_name, String sub_what, int method_acc)
        throws Exception {

    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES
            | ClassWriter.COMPUTE_MAXS);
    MethodVisitor mv;
    String[] interfaces = {"p/I"};

    cw.visit(V1_8, ACC_PUBLIC + ACC_SUPER, d_name, null, sub_what, interfaces);
    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, sub_what, "<init>", "()V");
        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
    // int m() {return 3;}
    {
        mv = cw.visitMethod(method_acc, "m", "()I", null, null);
        mv.visitCode();
        mv.visitLdcInsn(new Integer(3));
        mv.visitInsn(IRETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
    // int m(11args) {return 3;}
    {
        mv = cw.visitMethod(method_acc, "m", "(BCSIJ"
                + "Ljava/lang/Object;"
                + "Ljava/lang/Object;"
                + "Ljava/lang/Object;"
                + "Ljava/lang/Object;"
                + "Ljava/lang/Object;"
                + "Ljava/lang/Object;"
                + ")I", null, null);
        mv.visitCode();
        mv.visitLdcInsn(new Integer(3));
        mv.visitInsn(IRETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
    cw.visitEnd();
    return cw.toByteArray();
}
开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:59，代码来源:TestAMEnotNPE.java

示例14: bytesForT

import jdk.internal.org.objectweb.asm.MethodVisitor; //导入方法依赖的package包/类
/**
 * The bytecodes for a class p/T defining a methods test() and test(11args)
 * that contain an invokeExact of a particular methodHandle, I.m.
 *
 * Test will be passed values that may imperfectly implement I,
 * and thus may in turn throw exceptions.
 *
 * @return
 * @throws Exception
 */
public static byte[] bytesForT() throws Exception {

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

    cw.visit(V1_8, ACC_PUBLIC + ACC_SUPER, "p/T", null, "java/lang/Object", null);
    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
    // static int test(I)
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "test", "(Lp/I;)I", null, null);
        mv.visitCode();
        mv.visitLdcInsn(new Handle(Opcodes.H_INVOKEINTERFACE, "p/I", "m", "()I"));
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/invoke/MethodHandle",
                "invokeExact", "(Lp/I;)I");
        mv.visitInsn(IRETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
    // static int test(I,11args)
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "test", "(Lp/I;BCSIJLjava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)I", null, null);
        mv.visitCode();
        mv.visitLdcInsn(new Handle(Opcodes.H_INVOKEINTERFACE, "p/I", "m", "(BCSIJLjava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)I"));
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ILOAD, 1);
        mv.visitVarInsn(ILOAD, 2);
        mv.visitVarInsn(ILOAD, 3);
        mv.visitVarInsn(ILOAD, 4);
        mv.visitVarInsn(LLOAD, 5);
        mv.visitVarInsn(ALOAD, 7);
        mv.visitVarInsn(ALOAD, 8);
        mv.visitVarInsn(ALOAD, 9);
        mv.visitVarInsn(ALOAD, 10);
        mv.visitVarInsn(ALOAD, 11);
        mv.visitVarInsn(ALOAD, 12);
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/invoke/MethodHandle",
                "invokeExact", "(Lp/I;BCSIJLjava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)I");
        mv.visitInsn(IRETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
    cw.visitEnd();
    return cw.toByteArray();
}
开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:65，代码来源:TestAMEnotNPE.java

示例15: getField

import jdk.internal.org.objectweb.asm.MethodVisitor; //导入方法依赖的package包/类
void getField(MethodVisitor mv) {
    mv.visitLdcInsn(Type.getType(classDesc));
    mv.visitLdcInsn(FIELD_NAME);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getDeclaredField", "(Ljava/lang/String;)Ljava/lang/reflect/Field;", false);
}
开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:6，代码来源:UnsafeGetConstantField.java


注：本文中的jdk.internal.org.objectweb.asm.MethodVisitor.visitLdcInsn方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。