Examples with FieldVisitor org.objectweb.asm.FieldVisitor used on opensource projects

Example 61 with FieldVisitor

use of org.objectweb.asm.FieldVisitor in project access-modifier by kohsuke.

the class Checker method loadRestrictions.

/**
 * Loads an additional restriction from the specified "META-INF/annotations/org.kohsuke.accmod.Restricted" file.
 *
 * @param isInTheInspectedModule
 *      This value shows up in {@link RestrictedElement#isInTheInspectedModule()}.
 * @param stream
 */
public void loadRestrictions(InputStream stream, final boolean isInTheInspectedModule) throws IOException {
    if (stream == null)
        return;
    BufferedReader r = new BufferedReader(new InputStreamReader(stream, "UTF-8"));
    String className;
    while ((className = r.readLine()) != null) {
        InputStream is = dependencies.getResourceAsStream(className.replace('.', '/') + ".class");
        if (is == null) {
            errorListener.onWarning(null, null, "Failed to find class file for " + className);
            continue;
        }
        try {
            new ClassReader(is).accept(new ClassVisitor(Opcodes.ASM5) {

                private String className;

                @Override
                public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
                    this.className = name;
                }

                @Override
                public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
                    return onAnnotationFor(className, desc);
                }

                @Override
                public FieldVisitor visitField(int access, final String name, String desc, String signature, Object value) {
                    return new FieldVisitor(Opcodes.ASM5) {

                        @Override
                        public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
                            return onAnnotationFor(className + '.' + name, desc);
                        }
                    };
                }

                @Override
                public MethodVisitor visitMethod(int access, final String methodName, final String methodDesc, String signature, String[] exceptions) {
                    return new MethodVisitor(Opcodes.ASM5) {

                        @Override
                        public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
                            return onAnnotationFor(className + '.' + methodName + methodDesc, desc);
                        }
                    };
                }

                /**
                 * Parse {@link Restricted} annotation on some annotated element.
                 */
                private AnnotationVisitor onAnnotationFor(final String keyName, String desc) {
                    if (RESTRICTED_DESCRIPTOR.equals(desc)) {
                        RestrictedElement target = new RestrictedElement() {

                            public boolean isInTheInspectedModule() {
                                return isInTheInspectedModule;
                            }

                            public String toString() {
                                return keyName;
                            }
                        };
                        return new Parser(target) {

                            @Override
                            public void visitEnd() {
                                try {
                                    restrictions.put(keyName, build(factory));
                                } catch (ClassNotFoundException e) {
                                    failure(e);
                                } catch (InstantiationException e) {
                                    failure(e);
                                } catch (IllegalAccessException e) {
                                    failure(e);
                                }
                            }

                            /**
                             * Fails to load a {@link AccessRestriction} instance.
                             */
                            private void failure(Exception e) {
                                errorListener.onError(e, null, "Failed to load restrictions");
                            }
                        };
                    }
                    return null;
                }
            }, ClassReader.SKIP_CODE);
        } finally {
            is.close();
        }
    }
}

Example 62 with FieldVisitor

use of org.objectweb.asm.FieldVisitor in project soot by Sable.

the class AbstractASMBackend method generateFields.

/**
 * Emits the bytecode for all fields of the class
 */
protected void generateFields() {
    for (SootField f : sc.getFields()) {
        if (f.isPhantom())
            continue;
        String name = f.getName();
        String desc = toTypeDesc(f.getType());
        String sig = null;
        if (f.hasTag("SignatureTag")) {
            SignatureTag genericSignature = (SignatureTag) f.getTag("SignatureTag");
            sig = genericSignature.getSignature();
        }
        Object value = getDefaultValue(f);
        int access = getModifiers(f.getModifiers(), f);
        FieldVisitor fv = cv.visitField(access, name, desc, sig, value);
        if (fv != null) {
            generateAnnotations(fv, f);
            generateAttributes(fv, f);
            fv.visitEnd();
        }
    }
}

Example 63 with FieldVisitor

use of org.objectweb.asm.FieldVisitor in project beetl2.0 by javamonkey.

the class ASMGen method dump.

public static byte[] dump() throws Exception {
    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
    FieldVisitor fv;
    MethodVisitor mv;
    AnnotationVisitor av0;
    cw.visit(V1_6, ACC_PUBLIC + ACC_SUPER, "com/beetl/performance/lab/asm/UserAsmAccessor1", null, "java/lang/Object", new String[] { "com/beetl/performance/lab/asm/Access" });
    {
        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();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "get", "(Ljava/lang/Object;I)Ljava/lang/Object;", null, new String[] { "com/beetl/performance/lab/asm/ASMCastException" });
        mv.visitCode();
        Label l0 = new Label();
        Label l1 = new Label();
        Label l2 = new Label();
        mv.visitTryCatchBlock(l0, l1, l2, "java/lang/Exception");
        mv.visitInsn(ACONST_NULL);
        mv.visitVarInsn(ASTORE, 3);
        mv.visitLabel(l0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitTypeInsn(CHECKCAST, "com/beetl/performance/lab/User");
        mv.visitVarInsn(ASTORE, 3);
        mv.visitLabel(l1);
        Label l3 = new Label();
        mv.visitJumpInsn(GOTO, l3);
        mv.visitLabel(l2);
        mv.visitFrame(Opcodes.F_FULL, 4, new Object[] { "com/beetl/performance/lab/asm/UserAsmAccessor", "java/lang/Object", Opcodes.INTEGER, "com/beetl/performance/lab/User" }, 1, new Object[] { "java/lang/Exception" });
        mv.visitVarInsn(ASTORE, 4);
        mv.visitTypeInsn(NEW, "com/beetl/performance/lab/asm/ASMCastException");
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, "com/beetl/performance/lab/asm/ASMCastException", "<init>", "()V");
        mv.visitInsn(ATHROW);
        mv.visitLabel(l3);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitVarInsn(ILOAD, 2);
        Label l4 = new Label();
        Label l5 = new Label();
        Label l6 = new Label();
        mv.visitTableSwitchInsn(1, 2, l6, new Label[] { l4, l5 });
        mv.visitLabel(l4);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, "com/beetl/performance/lab/User", "getName", "()Ljava/lang/String;");
        mv.visitInsn(ARETURN);
        mv.visitLabel(l5);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitVarInsn(ALOAD, 3);
        mv.visitMethodInsn(INVOKEVIRTUAL, "com/beetl/performance/lab/User", "getId", "()I");
        mv.visitMethodInsn(INVOKESTATIC, "java/lang/Integer", "valueOf", "(I)Ljava/lang/Integer;");
        mv.visitInsn(ARETURN);
        mv.visitLabel(l6);
        mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        mv.visitTypeInsn(NEW, "java/lang/RuntimeException");
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/RuntimeException", "<init>", "()V");
        mv.visitInsn(ATHROW);
        mv.visitMaxs(2, 5);
        mv.visitEnd();
    }
    cw.visitEnd();
    return cw.toByteArray();
}

Example 64 with FieldVisitor

use of org.objectweb.asm.FieldVisitor in project LanternServer by LanternPowered.

the class AbstractListDataTypeGenerator method generateClasses.

@Override
<M extends DataManipulator<M, I>, I extends ImmutableDataManipulator<I, M>> void generateClasses(ClassWriter cwM, ClassWriter cwI, String mutableClassName, String immutableClassName, Class<M> manipulatorType, Class<I> immutableManipulatorType, @Nullable Class<? extends M> mutableExpansion, @Nullable Class<? extends I> immutableExpansion, @Nullable List<Method> mutableMethods, @Nullable List<Method> immutableMethods) {
    FieldVisitor fv;
    MethodVisitor mv;
    final String dManipulatorType = Type.getDescriptor(manipulatorType);
    final String dImmutableManipulatorType = Type.getDescriptor(immutableManipulatorType);
    final String dMutableExpansion = mutableExpansion == null ? null : Type.getDescriptor(mutableExpansion);
    final String dImmutableExpansion = immutableExpansion == null ? null : Type.getDescriptor(immutableExpansion);
    final String nManipulatorType = Type.getInternalName(manipulatorType);
    final String nImmutableManipulatorType = Type.getInternalName(immutableManipulatorType);
    final String nMutableExpansion = mutableExpansion == null ? null : Type.getInternalName(mutableExpansion);
    final String nImmutableExpansion = immutableExpansion == null ? null : Type.getInternalName(immutableExpansion);
    final Class<?> elementType = TypeToken.of(manipulatorType).resolveType(ListData.class.getTypeParameters()[0]).getRawType();
    final String dElementType = Type.getDescriptor(elementType);
    // Mutable class
    {
        final String[] interfaces = new String[mutableExpansion != null ? 2 : 1];
        final StringBuilder signBuilder = new StringBuilder();
        interfaces[0] = nManipulatorType;
        signBuilder.append(dManipulatorType);
        if (mutableExpansion != null) {
            interfaces[1] = nMutableExpansion;
            signBuilder.append(dMutableExpansion);
        }
        cwM.visit(V1_8, ACC_PUBLIC + ACC_SUPER, mutableClassName, format("L%s<%s%s%s>;", nAbstractListData, dElementType, dManipulatorType, dImmutableManipulatorType) + signBuilder.toString(), nAbstractListData, interfaces);
        {
            fv = cwM.visitField(ACC_PUBLIC + ACC_STATIC, KEY, dKey, format("L%s<L%s<%s>;>;", nKey, nListValue, dElementType), null);
            fv.visitEnd();
        }
        {
            fv = cwM.visitField(ACC_PUBLIC + ACC_STATIC, LIST_SUPPLIER, "Ljava/util/function/Supplier;", format("Ljava/util/function/Supplier<Ljava/util/List<%s>;>;", dElementType), null);
            fv.visitEnd();
        }
        {
            mv = cwM.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 0);
            mv.visitLdcInsn(Type.getType(manipulatorType));
            mv.visitLdcInsn(Type.getType(immutableManipulatorType));
            mv.visitFieldInsn(GETSTATIC, mutableClassName, KEY, dKey);
            mv.visitFieldInsn(GETSTATIC, mutableClassName, LIST_SUPPLIER, "Ljava/util/function/Supplier;");
            mv.visitMethodInsn(INVOKEINTERFACE, "java/util/function/Supplier", "get", "()Ljava/lang/Object;", true);
            mv.visitTypeInsn(CHECKCAST, "java/util/List");
            mv.visitMethodInsn(INVOKESPECIAL, nAbstractListData, "<init>", format("(Ljava/lang/Class;Ljava/lang/Class;%sLjava/util/List;)V", dKey), false);
            mv.visitInsn(RETURN);
            mv.visitMaxs(5, 1);
            mv.visitEnd();
        }
        {
            mv = cwM.visitMethod(ACC_PUBLIC, "<init>", format("(%s)V", dImmutableManipulatorType), null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 0);
            mv.visitVarInsn(ALOAD, 1);
            mv.visitMethodInsn(INVOKESPECIAL, nAbstractListData, "<init>", format("(%s)V", dImmutableListData), false);
            mv.visitInsn(RETURN);
            mv.visitMaxs(2, 2);
            mv.visitEnd();
        }
        {
            mv = cwM.visitMethod(ACC_PUBLIC, "<init>", format("(%s)V", dManipulatorType), null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 0);
            mv.visitVarInsn(ALOAD, 1);
            mv.visitMethodInsn(INVOKESPECIAL, nAbstractListData, "<init>", format("(%s)V", dListData), false);
            mv.visitInsn(RETURN);
            mv.visitMaxs(2, 2);
            mv.visitEnd();
        }
        cwM.visitEnd();
    }
    // Immutable class
    {
        final String[] interfaces = new String[mutableExpansion != null ? 2 : 1];
        final StringBuilder signBuilder = new StringBuilder();
        interfaces[0] = nImmutableManipulatorType;
        signBuilder.append(dImmutableManipulatorType);
        if (mutableExpansion != null) {
            interfaces[1] = nImmutableExpansion;
            signBuilder.append(dImmutableExpansion);
        }
        cwI.visit(V1_8, ACC_PUBLIC + ACC_SUPER, immutableClassName, format("L%s<%s%s%s>;", nAbstractImmutableListData, dElementType, dImmutableManipulatorType, dManipulatorType) + signBuilder.toString(), nAbstractImmutableListData, interfaces);
        {
            fv = cwI.visitField(ACC_PUBLIC + ACC_STATIC, KEY, dKey, format("L%s<L%s<%s>;>;", nKey, nListValue, dElementType), null);
            fv.visitEnd();
        }
        {
            fv = cwI.visitField(ACC_PUBLIC + ACC_STATIC, LIST_SUPPLIER, "Ljava/util/function/Supplier;", format("Ljava/util/function/Supplier<Ljava/util/List<%s>;>;", dElementType), null);
            fv.visitEnd();
        }
        {
            mv = cwI.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 0);
            mv.visitLdcInsn(Type.getType(immutableManipulatorType));
            mv.visitLdcInsn(Type.getType(manipulatorType));
            mv.visitFieldInsn(GETSTATIC, immutableClassName, "key", dKey);
            mv.visitFieldInsn(GETSTATIC, immutableClassName, LIST_SUPPLIER, "Ljava/util/function/Supplier;");
            mv.visitMethodInsn(INVOKEINTERFACE, "java/util/function/Supplier", "get", "()Ljava/lang/Object;", true);
            mv.visitTypeInsn(CHECKCAST, "java/util/List");
            mv.visitMethodInsn(INVOKESPECIAL, nAbstractImmutableListData, "<init>", format("(Ljava/lang/Class;Ljava/lang/Class;%sLjava/util/List;)V", dKey), false);
            mv.visitInsn(RETURN);
            mv.visitMaxs(5, 1);
            mv.visitEnd();
        }
        {
            mv = cwI.visitMethod(ACC_PUBLIC, "<init>", format("(%s)V", dManipulatorType), null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 0);
            mv.visitVarInsn(ALOAD, 1);
            mv.visitMethodInsn(INVOKESPECIAL, nAbstractImmutableListData, "<init>", format("(%s)V", dListData), false);
            mv.visitInsn(RETURN);
            mv.visitMaxs(2, 2);
            mv.visitEnd();
        }
        cwI.visitEnd();
    }
}

Example 65 with FieldVisitor

use of org.objectweb.asm.FieldVisitor in project LanternServer by LanternPowered.

the class AbstractVariantDataTypeGenerator method generateClasses.

@Override
<M extends DataManipulator<M, I>, I extends ImmutableDataManipulator<I, M>> void generateClasses(ClassWriter cwM, ClassWriter cwI, String mutableClassName, String immutableClassName, Class<M> manipulatorType, Class<I> immutableManipulatorType, @Nullable Class<? extends M> mutableExpansion, @Nullable Class<? extends I> immutableExpansion, @Nullable List<Method> mutableMethods, @Nullable List<Method> immutableMethods) {
    FieldVisitor fv;
    MethodVisitor mv;
    final String dManipulatorType = Type.getDescriptor(manipulatorType);
    final String dImmutableManipulatorType = Type.getDescriptor(immutableManipulatorType);
    final String dMutableExpansion = mutableExpansion == null ? null : Type.getDescriptor(mutableExpansion);
    final String dImmutableExpansion = immutableExpansion == null ? null : Type.getDescriptor(immutableExpansion);
    final String nManipulatorType = Type.getInternalName(manipulatorType);
    final String nImmutableManipulatorType = Type.getInternalName(immutableManipulatorType);
    final String nMutableExpansion = mutableExpansion == null ? null : Type.getInternalName(mutableExpansion);
    final String nImmutableExpansion = immutableExpansion == null ? null : Type.getInternalName(immutableExpansion);
    final Class<?> elementType = TypeToken.of(manipulatorType).resolveType(VariantData.class.getTypeParameters()[0]).getRawType();
    final String dElementType = Type.getDescriptor(elementType);
    // Mutable class
    {
        final String[] interfaces = new String[mutableExpansion != null ? 2 : 1];
        final StringBuilder signBuilder = new StringBuilder();
        interfaces[0] = nManipulatorType;
        signBuilder.append(dManipulatorType);
        if (mutableExpansion != null) {
            interfaces[1] = nMutableExpansion;
            signBuilder.append(dMutableExpansion);
        }
        cwM.visit(V1_8, ACC_PUBLIC + ACC_SUPER, mutableClassName, format("L%s<%s%s%s>;", nAbstractVariantData, dElementType, dManipulatorType, dImmutableManipulatorType) + signBuilder.toString(), nAbstractVariantData, interfaces);
        {
            fv = cwM.visitField(ACC_PUBLIC + ACC_STATIC, KEY, dKey, format("L%s<L%s<%s>;>;", nKey, nValue, dElementType), null);
            fv.visitEnd();
        }
        {
            fv = cwM.visitField(ACC_PUBLIC + ACC_STATIC, VALUE, dElementType, null, null);
            fv.visitEnd();
        }
        {
            mv = cwM.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 0);
            mv.visitLdcInsn(Type.getType(manipulatorType));
            mv.visitLdcInsn(Type.getType(immutableManipulatorType));
            mv.visitFieldInsn(GETSTATIC, mutableClassName, KEY, dKey);
            mv.visitFieldInsn(GETSTATIC, mutableClassName, VALUE, dElementType);
            mv.visitMethodInsn(INVOKESPECIAL, nAbstractVariantData, "<init>", format("(Ljava/lang/Class;Ljava/lang/Class;%sLjava/lang/Object;)V", dKey), false);
            mv.visitInsn(RETURN);
            mv.visitMaxs(5, 1);
            mv.visitEnd();
        }
        {
            mv = cwM.visitMethod(ACC_PUBLIC, "<init>", format("(%s)V", dImmutableManipulatorType), null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 0);
            mv.visitVarInsn(ALOAD, 1);
            mv.visitMethodInsn(INVOKESPECIAL, nAbstractVariantData, "<init>", format("(%s)V", dImmutableVariantData), false);
            mv.visitInsn(RETURN);
            mv.visitMaxs(2, 2);
            mv.visitEnd();
        }
        {
            mv = cwM.visitMethod(ACC_PUBLIC, "<init>", format("(%s)V", dManipulatorType), null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 0);
            mv.visitVarInsn(ALOAD, 1);
            mv.visitMethodInsn(INVOKESPECIAL, nAbstractVariantData, "<init>", format("(%s)V", dVariantData), false);
            mv.visitInsn(RETURN);
            mv.visitMaxs(2, 2);
            mv.visitEnd();
        }
        cwM.visitEnd();
    }
    // Immutable class
    {
        final String[] interfaces = new String[mutableExpansion != null ? 2 : 1];
        final StringBuilder signBuilder = new StringBuilder();
        interfaces[0] = nImmutableManipulatorType;
        signBuilder.append(dImmutableManipulatorType);
        if (mutableExpansion != null) {
            interfaces[1] = nImmutableExpansion;
            signBuilder.append(dImmutableExpansion);
        }
        cwI.visit(V1_8, ACC_PUBLIC + ACC_SUPER, immutableClassName, format("L%s<%s%s%s>;", nAbstractImmutableVariantData, dElementType, dImmutableManipulatorType, dManipulatorType) + signBuilder.toString(), nAbstractImmutableVariantData, interfaces);
        {
            fv = cwI.visitField(ACC_PUBLIC + ACC_STATIC, KEY, dKey, format("L%s<L%s<%s>;>;", nKey, nValue, dElementType), null);
            fv.visitEnd();
        }
        {
            fv = cwI.visitField(ACC_PUBLIC + ACC_STATIC, VALUE, dElementType, null, null);
            fv.visitEnd();
        }
        {
            mv = cwI.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 0);
            mv.visitLdcInsn(Type.getType(immutableManipulatorType));
            mv.visitLdcInsn(Type.getType(manipulatorType));
            mv.visitFieldInsn(GETSTATIC, immutableClassName, KEY, dKey);
            mv.visitFieldInsn(GETSTATIC, immutableClassName, VALUE, dElementType);
            mv.visitMethodInsn(INVOKESPECIAL, nAbstractImmutableVariantData, "<init>", format("(Ljava/lang/Class;Ljava/lang/Class;%sLjava/lang/Object;)V", dKey), false);
            mv.visitInsn(RETURN);
            mv.visitMaxs(5, 1);
            mv.visitEnd();
        }
        {
            mv = cwI.visitMethod(ACC_PUBLIC, "<init>", format("(%s)V", dManipulatorType), null, null);
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 0);
            mv.visitVarInsn(ALOAD, 1);
            mv.visitMethodInsn(INVOKESPECIAL, nAbstractImmutableVariantData, "<init>", format("(%s)V", dVariantData), false);
            mv.visitInsn(RETURN);
            mv.visitMaxs(2, 2);
            mv.visitEnd();
        }
        cwI.visitEnd();
    }
}