Example usage for org.objectweb.asm Opcodes GETSTATIC

Introduction

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

Prototype

int GETSTATIC

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

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Usage

From source file:hellfirepvp.astralsorcery.core.patch.helper.PatchKnockbackEvent.java

License:Open Source License

@Override
public void patch(ClassNode cn) {
    MethodNode mn = getMethod(cn, "knockBack", "func_70653_a", "(Lnet/minecraft/entity/Entity;FDD)V");
    AbstractInsnNode n = mn.instructions.getFirst();
    mn.instructions.insertBefore(n,/*w w w .j av a 2 s.  c o  m*/
            new FieldInsnNode(Opcodes.GETSTATIC, "net/minecraftforge/common/MinecraftForge", "EVENT_BUS",
                    "Lnet/minecraftforge/fml/common/eventhandler/EventBus;"));
    mn.instructions.insertBefore(n,
            new TypeInsnNode(Opcodes.NEW, "hellfirepvp/astralsorcery/common/event/EntityKnockbackEvent"));
    mn.instructions.insertBefore(n, new InsnNode(Opcodes.DUP));
    mn.instructions.insertBefore(n, new VarInsnNode(Opcodes.ALOAD, 0)); //thisEntity
    mn.instructions.insertBefore(n, new VarInsnNode(Opcodes.ALOAD, 1)); //attackingEntity
    mn.instructions.insertBefore(n, new VarInsnNode(Opcodes.FLOAD, 2)); //str
    mn.instructions.insertBefore(n,
            new MethodInsnNode(Opcodes.INVOKESPECIAL,
                    "hellfirepvp/astralsorcery/common/event/EntityKnockbackEvent", "<init>",
                    "(Lnet/minecraft/entity/EntityLivingBase;Lnet/minecraft/entity/Entity;F)V", false));
    mn.instructions.insertBefore(n,
            new MethodInsnNode(Opcodes.INVOKEVIRTUAL, "net/minecraftforge/fml/common/eventhandler/EventBus",
                    "post", "(Lnet/minecraftforge/fml/common/eventhandler/Event;)Z", false));
    mn.instructions.insertBefore(n, new InsnNode(Opcodes.POP));
}

---

From source file:io.syncframework.optimizer.OControllerClassVisitor.java

License:Apache License

/**
 * Generates code://  ww w .j av a 2s.c  o  m
 * 
 * public Class<?>[] _asActionInterceptors(String name) {
 *    return _asInterceptors.get(name);
 * }
 */
public void createActionInterceptorsMethod() {
    MethodVisitor mv = cv.visitMethod(Opcodes.ACC_PUBLIC, "_asActionInterceptors",
            "(Ljava/lang/String;)[Ljava/lang/Class;", null, null);

    Label l0 = new Label();
    Label l1 = new Label();
    mv.visitLabel(l0);
    mv.visitFieldInsn(Opcodes.GETSTATIC, reflector.getClazzInternalName(), "_asInterceptors",
            "Ljava/util/Map;");
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/Map", "get",
            "(Ljava/lang/Object;)Ljava/lang/Object;", true);
    mv.visitTypeInsn(Opcodes.CHECKCAST, "[Ljava/lang/Class;");
    mv.visitInsn(Opcodes.ARETURN);

    mv.visitLabel(l1);
    mv.visitLocalVariable("this", reflector.getClazzDescriptor(), null, l0, l1, 0);
    mv.visitLocalVariable("name", "Ljava/lang/String;", null, l0, l1, 1);
    mv.visitMaxs(2, 2);

    mv.visitEnd();
}

---

From source file:io.syncframework.optimizer.OControllerClassVisitor.java

License:Apache License

/**
 * Generates this code://w ww .  j a  va  2  s.  c  om
 * 
 * public boolean _asActionIsDefined(String name) {
 *    if(_asActions.containsKey(name))
 *       return true;
 *    return false;
 * }
 */
public void createActionIsDefinedMethod() {
    MethodVisitor mv = cv.visitMethod(Opcodes.ACC_PUBLIC, "_asActionIsDefined", "(Ljava/lang/String;)Z", null,
            null);
    Label l0 = new Label();
    Label l1 = new Label();
    Label l2 = new Label();
    Label l3 = new Label();

    mv.visitLabel(l0);
    mv.visitFieldInsn(Opcodes.GETSTATIC, reflector.getClazzInternalName(), "_asActions", "Ljava/util/Map;");
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/Map", "containsKey", "(Ljava/lang/Object;)Z", true);
    mv.visitJumpInsn(Opcodes.IFEQ, l1);

    mv.visitLabel(l2);
    mv.visitInsn(Opcodes.ICONST_1);
    mv.visitInsn(Opcodes.IRETURN);

    mv.visitLabel(l1);
    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    mv.visitInsn(Opcodes.ICONST_0);
    mv.visitInsn(Opcodes.IRETURN);

    mv.visitLabel(l3);
    mv.visitLocalVariable("this", reflector.getClazzDescriptor(), null, l0, l3, 0);
    mv.visitLocalVariable("name", "Ljava/lang/String;", null, l0, l3, 1);
    mv.visitMaxs(2, 2);

    mv.visitEnd();
}

---

From source file:io.syncframework.optimizer.OControllerClassVisitor.java

License:Apache License

/**
 * Generates the code://from   w w w.  jav  a  2 s .co  m
 * public Map<String, Class<?>> _asParameters() {
 *    return _asParameters;
 * }
 */
private void createParametersMethod() {
    MethodVisitor mv = cv.visitMethod(Opcodes.ACC_PUBLIC, "_asParameters", "()Ljava/util/Map;",
            "()Ljava/util/Map<Ljava/lang/String;Ljava/lang/Class<*>;>;", null);
    mv.visitCode();
    Label l0 = new Label();
    mv.visitLabel(l0);
    mv.visitFieldInsn(Opcodes.GETSTATIC, reflector.getClazzInternalName(), "_asParameters", "Ljava/util/Map;");
    mv.visitInsn(Opcodes.ARETURN);
    Label l1 = new Label();
    mv.visitLabel(l1);
    mv.visitLocalVariable("this", reflector.getClazzDescriptor(), null, l0, l1, 0);
    mv.visitMaxs(1, 1);
    mv.visitEnd();
}

---

From source file:io.syncframework.optimizer.OControllerClassVisitor.java

License:Apache License

/**
 * public Class<?> _asParameterConverter(String name) {
 *    return _asConverters.get(name);//from   w w w  . ja v a  2  s. co m
 * }
 */
public void createParameterConverterMethod() {
    MethodVisitor mv = cv.visitMethod(Opcodes.ACC_PUBLIC, "_asParameterConverter",
            "(Ljava/lang/String;)Ljava/lang/Class;", null, null);
    Label l0 = new Label();
    mv.visitLabel(l0);
    mv.visitFieldInsn(Opcodes.GETSTATIC, reflector.getClazzInternalName(), "_asConverters", "Ljava/util/Map;");
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/Map", "get",
            "(Ljava/lang/Object;)Ljava/lang/Object;", true);
    mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Class");
    mv.visitInsn(Opcodes.ARETURN);

    Label l1 = new Label();
    mv.visitLocalVariable("this", reflector.getClazzDescriptor(), null, l0, l1, 0);
    mv.visitLocalVariable("name", "Ljava/lang/String;", null, l0, l1, 1);
    mv.visitMaxs(2, 2);
    mv.visitEnd();
}

---

From source file:io.syncframework.optimizer.OControllerStaticMethodVisitor.java

License:Apache License

public void visitInsn(int opcode) {
    if (opcode != Opcodes.RETURN) {
        mv.visitInsn(opcode);/*ww  w.  j av a 2s. co  m*/
        return;
    }

    Label start = new Label();
    Label l1 = new Label();
    Label l2 = new Label();
    Label interceptorsLabel = new Label();

    mv.visitCode();
    mv.visitTryCatchBlock(start, l1, l2, "java/lang/Throwable");

    /*
     * _asActions = new HashMap<String,Boolean>();
     */
    {
        mv.visitLabel(start);
        mv.visitTypeInsn(Opcodes.NEW, "java/util/HashMap");
        mv.visitInsn(Opcodes.DUP);
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/util/HashMap", "<init>", "()V", false);
        mv.visitFieldInsn(Opcodes.PUTSTATIC, reflector.getClazzInternalName(), "_asActions", "Ljava/util/Map;");
    }
    /*
     * _asActions.put("main", true);
     * _asActions.put("action1", true);
     */
    for (String name : reflector.getActions().keySet()) {
        Label l = new Label();
        mv.visitLabel(l);
        mv.visitFieldInsn(Opcodes.GETSTATIC, reflector.getClazzInternalName(), "_asActions", "Ljava/util/Map;");
        mv.visitLdcInsn(name);
        mv.visitInsn(Opcodes.ICONST_1);
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Boolean", "valueOf", "(Z)Ljava/lang/Boolean;",
                false);
        mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/Map", "put",
                "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;", true);
        mv.visitInsn(Opcodes.POP);
    }

    /*
     * _asInterceptors = new HashMap<String,Class<?>[]>()
     */
    {
        Label l = new Label();
        mv.visitLabel(l);
        mv.visitTypeInsn(Opcodes.NEW, "java/util/HashMap");
        mv.visitInsn(Opcodes.DUP);
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/util/HashMap", "<init>", "()V", false);
        mv.visitFieldInsn(Opcodes.PUTSTATIC, reflector.getClazzInternalName(), "_asInterceptors",
                "Ljava/util/Map;");
    }

    /*
     * List<Class<?>> l = new ArrayList<Class<?>>();
     */
    mv.visitLabel(interceptorsLabel);
    mv.visitTypeInsn(Opcodes.NEW, "java/util/ArrayList");
    mv.visitInsn(Opcodes.DUP);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/util/ArrayList", "<init>", "()V", false);
    mv.visitVarInsn(Opcodes.ASTORE, 0);

    for (String name : reflector.getActions().keySet()) {
        Class<?> interceptors[] = reflector.getInterceptors().get(name);
        if (interceptors == null || interceptors.length == 0)
            continue;

        /*
         * l.clear();
         */
        Label l01 = new Label();
        mv.visitLabel(l01);
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/List", "clear", "()V", true);

        for (Class<?> interceptor : interceptors) {
            /*
             * l.add(LoginInterceptor.class);
             */
            Label l02 = new Label();
            mv.visitLabel(l02);
            mv.visitVarInsn(Opcodes.ALOAD, 0);
            mv.visitLdcInsn(Type.getType(interceptor));
            mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/List", "add", "(Ljava/lang/Object;)Z", true);
        }

        /*
         * _asInterceptors.put("upload", l.toArray(new Class[0]));
         */
        Label l03 = new Label();
        mv.visitLabel(l03);
        mv.visitFieldInsn(Opcodes.GETSTATIC, reflector.getClazzInternalName(), "_asInterceptors",
                "Ljava/util/Map;");
        mv.visitLdcInsn(name);
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitInsn(Opcodes.ICONST_0);
        mv.visitTypeInsn(Opcodes.ANEWARRAY, "java/lang/Class");
        mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/List", "toArray",
                "([Ljava/lang/Object;)[Ljava/lang/Object;", true);
        mv.visitTypeInsn(Opcodes.CHECKCAST, "[Ljava/lang/Class;");
        mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/Map", "put",
                "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;", true);
        mv.visitInsn(Opcodes.POP);
    }

    /* 
     * _asParameters = new HashMap<String,Class<?>>() 
     */
    {
        Label l = new Label();
        mv.visitLabel(l);
        mv.visitTypeInsn(Opcodes.NEW, "java/util/HashMap");
        mv.visitInsn(Opcodes.DUP);
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/util/HashMap", "<init>", "()V", false);
        mv.visitFieldInsn(Opcodes.PUTSTATIC, reflector.getClazzInternalName(), "_asParameters",
                "Ljava/util/Map;");
    }
    /*
     * _asParameters.put("name", Type.class);
     */
    for (String name : reflector.getParameters().keySet()) {
        Label l = new Label();
        mv.visitLabel(l);
        mv.visitFieldInsn(Opcodes.GETSTATIC, reflector.getClazzInternalName(), "_asParameters",
                "Ljava/util/Map;");
        mv.visitLdcInsn(name);
        mv.visitLdcInsn(Type.getType(reflector.getParameters().get(name)));
        mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/Map", "put",
                "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;", true);
        mv.visitInsn(Opcodes.POP);
    }

    /* 
     * _asConverters = new HashMap<String,Class<?>>() 
     */
    {
        Label l = new Label();
        mv.visitLabel(l);
        mv.visitTypeInsn(Opcodes.NEW, "java/util/HashMap");
        mv.visitInsn(Opcodes.DUP);
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/util/HashMap", "<init>", "()V", false);
        mv.visitFieldInsn(Opcodes.PUTSTATIC, reflector.getClazzInternalName(), "_asConverters",
                "Ljava/util/Map;");
    }
    /*
     * _asConverters.put("name", Type.class);
     */
    for (String name : reflector.getParameters().keySet()) {
        if (reflector.getConverters().get(name) != null) {
            Class<?> converter = reflector.getConverters().get(name);
            Label l = new Label();
            mv.visitLabel(l);
            mv.visitFieldInsn(Opcodes.GETSTATIC, reflector.getClazzInternalName(), "_asConverters",
                    "Ljava/util/Map;");
            mv.visitLdcInsn(name);
            mv.visitLdcInsn(Type.getType(converter));
            mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/Map", "put",
                    "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;", true);
            mv.visitInsn(Opcodes.POP);
        }
    }

    /*
     * }
     * catch(Throwable t) {
     *    throw t;
     * }
     */
    Label throwableStart = new Label();
    Label throwableEnd = new Label();

    mv.visitLabel(l1);
    mv.visitJumpInsn(Opcodes.GOTO, throwableEnd);
    mv.visitLabel(l2);
    mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/Throwable" });
    mv.visitVarInsn(Opcodes.ASTORE, 0);
    mv.visitLabel(throwableStart);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitInsn(Opcodes.ATHROW);

    mv.visitLabel(throwableEnd);
    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    mv.visitInsn(Opcodes.RETURN);
    mv.visitLocalVariable("l", "Ljava/util/List;", null, interceptorsLabel, l1, 0);
    mv.visitLocalVariable("t", "Ljava/lang/Throwable;", null, throwableStart, throwableEnd, 0);
}

---

From source file:io.syncframework.optimizer.OInterceptorStaticMethodVisitor.java

License:Apache License

public void visitInsn(int opcode) {
    if (opcode != Opcodes.RETURN) {
        mv.visitInsn(opcode);/* ww w . j  a  v  a2s.  com*/
        return;
    }

    Label start = new Label();
    Label l1 = new Label();
    Label l2 = new Label();

    mv.visitCode();
    mv.visitTryCatchBlock(start, l1, l2, "java/lang/Throwable");

    /* 
     * _asParameters = new HashMap<String,Class<?>>() 
     */
    {
        mv.visitLabel(start);
        mv.visitTypeInsn(Opcodes.NEW, "java/util/HashMap");
        mv.visitInsn(Opcodes.DUP);
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/util/HashMap", "<init>", "()V", false);
        mv.visitFieldInsn(Opcodes.PUTSTATIC, reflector.getClazzInternalName(), "_asParameters",
                "Ljava/util/Map;");
    }
    /*
     * _asParameters.put("name", Type.class);
     */
    for (String name : reflector.getParameters().keySet()) {
        Label l = new Label();
        mv.visitLabel(l);
        mv.visitFieldInsn(Opcodes.GETSTATIC, reflector.getClazzInternalName(), "_asParameters",
                "Ljava/util/Map;");
        mv.visitLdcInsn(name);
        mv.visitLdcInsn(Type.getType(reflector.getParameters().get(name)));
        mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/Map", "put",
                "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;", true);
        mv.visitInsn(Opcodes.POP);
    }

    /* 
     * _asConverters = new HashMap<String,Class<?>>() 
     */
    {
        Label l = new Label();
        mv.visitLabel(l);
        mv.visitTypeInsn(Opcodes.NEW, "java/util/HashMap");
        mv.visitInsn(Opcodes.DUP);
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/util/HashMap", "<init>", "()V", false);
        mv.visitFieldInsn(Opcodes.PUTSTATIC, reflector.getClazzInternalName(), "_asConverters",
                "Ljava/util/Map;");
    }
    /*
     * _asConverters.put("name", Type.class);
     */
    for (String name : reflector.getParameters().keySet()) {
        if (reflector.getConverters().get(name) != null) {
            Class<?> converter = reflector.getConverters().get(name);
            Label l = new Label();
            mv.visitLabel(l);
            mv.visitFieldInsn(Opcodes.GETSTATIC, reflector.getClazzInternalName(), "_asConverters",
                    "Ljava/util/Map;");
            mv.visitLdcInsn(name);
            mv.visitLdcInsn(Type.getType(converter));
            mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/Map", "put",
                    "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;", true);
            mv.visitInsn(Opcodes.POP);
        }
    }

    /*
     * }
     * catch(Throwable t) {
     *    throw t;
     * }
     */
    Label throwableStart = new Label();
    Label throwableEnd = new Label();

    mv.visitLabel(l1);
    mv.visitJumpInsn(Opcodes.GOTO, throwableEnd);

    mv.visitLabel(l2);
    mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/Throwable" });
    mv.visitVarInsn(Opcodes.ASTORE, 0);

    mv.visitLabel(throwableStart);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitInsn(Opcodes.ATHROW);

    mv.visitLabel(throwableEnd);
    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    mv.visitInsn(Opcodes.RETURN);
    mv.visitLocalVariable("t", "Ljava/lang/Throwable;", null, throwableStart, throwableEnd, 0);
}

---

From source file:jerl.bcm.inj.impl.InjectCollection.java

License:Apache License

public void injectIDRegistration(MethodVisitor mv, int id) {
    // TODO: change to correct call
    mv.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
    mv.visitLdcInsn("entry: " + id);
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V");
}

---

From source file:jerl.bcm.inj.impl.InjectCollection.java

License:Apache License

public void injectSystemOut(MethodVisitor mv, String str) {
    mv.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
    mv.visitLdcInsn(str);/*from   ww w. java2  s  .com*/
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V");
}

---

From source file:jerl.bcm.inj.impl.InjectCollection.java

License:Apache License

public void injectMemberFieldSystemOut(MethodVisitor mv, String clazz, String field, String type,
        String printType, String prefix, boolean isStatic) {
    mv.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
    mv.visitLdcInsn(prefix);/*from   ww w . jav a  2 s  .c om*/
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/io/PrintStream", "print", "(Ljava/lang/String;)V");

    mv.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
    if (isStatic) {
        mv.visitFieldInsn(Opcodes.GETSTATIC, clazz, field, type);
    } else {
        mv.visitVarInsn(Opcodes.ALOAD, 0); // this
        mv.visitFieldInsn(Opcodes.GETFIELD, clazz, field, type);
    }
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/io/PrintStream", "println", "(" + printType + ")V");
}

---

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