Examples of com.sun.tools.classfile.AccessFlags

com.sun.tools.classfile.AccessFlags
See JVMS, sections 4.2, 4.6, 4.7.
This is NOT part of any supported API. If you write code that depends on this, you do so at your own risk. This code and its internal interfaces are subject to change or deletion without notice.

        ClassReader cr = new ClassReader(this, in, attributeFactory);
        magic = cr.readInt();
        minor_version = cr.readUnsignedShort();
        major_version = cr.readUnsignedShort();
        constant_pool = new ConstantPool(cr);
        access_flags = new AccessFlags(cr);
        this_class = cr.readUnsignedShort();
        super_class = cr.readUnsignedShort();


        int interfaces_count = cr.readUnsignedShort();
        interfaces = new int[interfaces_count];

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        ClassReader cr = new ClassReader(this, in, attributeFactory);
        magic = cr.readInt();
        minor_version = cr.readUnsignedShort();
        major_version = cr.readUnsignedShort();
        constant_pool = new ConstantPool(cr);
        access_flags = new AccessFlags(cr);
        this_class = cr.readUnsignedShort();
        super_class = cr.readUnsignedShort();


        int interfaces_count = cr.readUnsignedShort();
        interfaces = new int[interfaces_count];

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            first = false;
        }
        for (int i = 0 ; i < attr.classes.length; i++) {
            InnerClasses_attribute.Info info = attr.classes[i];
            //access
            AccessFlags access_flags = info.inner_class_access_flags;
            if (options.compat) {
                // BUG 6622215: javap ignores certain relevant access flags
                access_flags = access_flags.ignore(ACC_STATIC | ACC_PROTECTED | ACC_PRIVATE | ACC_INTERFACE | ACC_SYNTHETIC | ACC_ENUM);
                // BUG 6622232: javap gets whitespace confused
                print("   ");
            }
            if (options.checkAccess(access_flags)) {
                if (first) {
                    writeInnerClassHeader();
                    first = false;
                }
                print("   ");
                for (String name: access_flags.getInnerClassModifiers())
                    print(name + " ");
                if (info.inner_name_index!=0) {
                    print("#" + info.inner_name_index + "= ");
                }
                print("#" + info.inner_class_info_index);

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            first = false;
        }
        for (int i = 0 ; i < attr.classes.length; i++) {
            InnerClasses_attribute.Info info = attr.classes[i];
            //access
            AccessFlags access_flags = info.inner_class_access_flags;
            if (options.compat) {
                // BUG 6622215: javap ignores certain relevant access flags
                access_flags = access_flags.ignore(ACC_STATIC | ACC_PROTECTED | ACC_PRIVATE | ACC_INTERFACE | ACC_SYNTHETIC | ACC_ENUM);
                // BUG 6622232: javap gets whitespace confused
                print("   ");
            }
            if (options.checkAccess(access_flags)) {
                if (first) {
                    writeInnerClassHeader();
                    first = false;
                }
                print("   ");
                for (String name: access_flags.getInnerClassModifiers())
                    print(name + " ");
                if (info.inner_name_index!=0) {
                    print("#" + info.inner_name_index + "= ");
                }
                print("#" + info.inner_class_info_index);

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        if ((options.sysInfo || options.verbose) && !options.compat) {
            indent(-1);
        }


        String name = getJavaName(classFile);
        AccessFlags flags = cf.access_flags;


        writeModifiers(flags.getClassModifiers());


        if (classFile.isClass())
            print("class ");
        else if (classFile.isInterface())
            print("interface ");


        print(name);


        Signature_attribute sigAttr = getSignature(cf.attributes);
        if (sigAttr == null) {
            // use info from class file header
            if (classFile.isClass() && classFile.super_class != 0 ) {
                String sn = getJavaSuperclassName(cf);
                if (!sn.equals("java.lang.Object")) {
                    print(" extends ");
                    print(sn);
                }
            }
            for (int i = 0; i < classFile.interfaces.length; i++) {
                print(i == 0 ? (classFile.isClass() ? " implements " : " extends ") : ",");
                print(getJavaInterfaceName(classFile, i));
            }
        } else {
            try {
                Type t = sigAttr.getParsedSignature().getType(constant_pool);
                JavaTypePrinter p = new JavaTypePrinter(classFile.isInterface());
                // The signature parser cannot disambiguate between a
                // FieldType and a ClassSignatureType that only contains a superclass type.
                if (t instanceof Type.ClassSigType) {
                    print(p.print(t));
                } else if (options.verbose || !t.isObject()) {
                    print(" extends ");
                    print(p.print(t));
                }
            } catch (ConstantPoolException e) {
                print(report(e));
            }
        }


        if (options.verbose) {
            println();
            indent(+1);
            attrWriter.write(cf, cf.attributes, constant_pool);
            println("minor version: " + cf.minor_version);
            println("major version: " + cf.major_version);
            if (!options.compat)
              writeList("flags: ", flags.getClassFlags(), NEWLINE);
            indent(-1);
            constantWriter.writeConstantPool();
        } else {
            print(" ");
        }

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    protected void writeField(Field f) {
        if (!options.checkAccess(f.access_flags))
            return;


        AccessFlags flags = f.access_flags;
        writeModifiers(flags.getFieldModifiers());
        Signature_attribute sigAttr = getSignature(f.attributes);
        if (sigAttr == null)
            print(getJavaFieldType(f.descriptor));
        else {
            try {
                Type t = sigAttr.getParsedSignature().getType(constant_pool);
                print(getJavaName(t.toString()));
            } catch (ConstantPoolException e) {
                // report error?
                // fall back on non-generic descriptor
                print(getJavaFieldType(f.descriptor));
            }
        }
        print(" ");
        print(getFieldName(f));
        if (options.showConstants && !options.compat) { // BUG 4111861 print static final field contents
            Attribute a = f.attributes.get(Attribute.ConstantValue);
            if (a instanceof ConstantValue_attribute) {
                print(" = ");
                ConstantValue_attribute cv = (ConstantValue_attribute) a;
                print(getConstantValue(f.descriptor, cv.constantvalue_index));
            }
        }
        print(";");
        println();


        indent(+1);


        if (options.showInternalSignatures)
            println("Signature: " + getValue(f.descriptor));


        if (options.verbose && !options.compat)
            writeList("flags: ", flags.getFieldFlags(), NEWLINE);


        if (options.showAllAttrs) {
            for (Attribute attr: f.attributes)
                attrWriter.write(f, attr, constant_pool);
            println();

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        if (!options.checkAccess(m.access_flags))
            return;


        method = m;


        AccessFlags flags = m.access_flags;


        Descriptor d;
        Type.MethodType methodType;
        List<? extends Type> methodExceptions;


        Signature_attribute sigAttr = getSignature(m.attributes);
        if (sigAttr == null) {
            d = m.descriptor;
            methodType = null;
            methodExceptions = null;
        } else {
            Signature methodSig = sigAttr.getParsedSignature();
            d = methodSig;
            try {
                methodType = (Type.MethodType) methodSig.getType(constant_pool);
                methodExceptions = methodType.throwsTypes;
                if (methodExceptions != null && methodExceptions.isEmpty())
                    methodExceptions = null;
            } catch (ConstantPoolException e) {
                // report error?
                // fall back on standard descriptor
                methodType = null;
                methodExceptions = null;
            }
        }


        writeModifiers(flags.getMethodModifiers());
        if (methodType != null) {
            writeListIfNotEmpty("<", methodType.typeParamTypes, "> ");
        }
        if (getName(m).equals("<init>")) {
            print(getJavaName(classFile));
            print(getJavaParameterTypes(d, flags));
        } else if (getName(m).equals("<clinit>")) {
            print("{}");
        } else {
            print(getJavaReturnType(d));
            print(" ");
            print(getName(m));
            print(getJavaParameterTypes(d, flags));
        }


        Attribute e_attr = m.attributes.get(Attribute.Exceptions);
        if (e_attr != null) { // if there are generic exceptions, there must be erased exceptions
            if (e_attr instanceof Exceptions_attribute) {
                Exceptions_attribute exceptions = (Exceptions_attribute) e_attr;
                print(" throws ");
                if (methodExceptions != null) { // use generic list if available
                    writeList("", methodExceptions, "");
                } else {
                    for (int i = 0; i < exceptions.number_of_exceptions; i++) {
                        if (i > 0)
                            print(", ");
                        print(getJavaException(exceptions, i));
                    }
                }
            } else {
                report("Unexpected or invalid value for Exceptions attribute");
            }
        }


        println(";");


        indent(+1);


        if (options.showInternalSignatures) {
            println("Signature: " + getValue(m.descriptor));
        }


        if (options.verbose && !options.compat) {
            writeList("flags: ", flags.getMethodFlags(), NEWLINE);
        }


        Code_attribute code = null;
        Attribute c_attr = m.attributes.get(Attribute.Code);
        if (c_attr != null) {

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        if ((options.sysInfo || options.verbose) && !options.compat) {
            indent(-1);
        }


        String name = getJavaName(classFile);
        AccessFlags flags = cf.access_flags;


        writeModifiers(flags.getClassModifiers());


        if (classFile.isClass())
            print("class ");
        else if (classFile.isInterface())
            print("interface ");


        print(name);


        Signature_attribute sigAttr = getSignature(cf.attributes);
        if (sigAttr == null) {
            // use info from class file header
            if (classFile.isClass() && classFile.super_class != 0 ) {
                String sn = getJavaSuperclassName(cf);
                if (!sn.equals("java.lang.Object")) {
                    print(" extends ");
                    print(sn);
                }
            }
            for (int i = 0; i < classFile.interfaces.length; i++) {
                print(i == 0 ? (classFile.isClass() ? " implements " : " extends ") : ",");
                print(getJavaInterfaceName(classFile, i));
            }
        } else {
            try {
                Type t = sigAttr.getParsedSignature().getType(constant_pool);
                JavaTypePrinter p = new JavaTypePrinter(classFile.isInterface());
                // The signature parser cannot disambiguate between a
                // FieldType and a ClassSignatureType that only contains a superclass type.
                if (t instanceof Type.ClassSigType) {
                    print(p.print(t));
                } else if (options.verbose || !t.isObject()) {
                    print(" extends ");
                    print(p.print(t));
                }
            } catch (ConstantPoolException e) {
                print(report(e));
            }
        }


        if (options.verbose) {
            println();
            indent(+1);
            attrWriter.write(cf, cf.attributes, constant_pool);
            println("minor version: " + cf.minor_version);
            println("major version: " + cf.major_version);
            if (!options.compat)
              writeList("flags: ", flags.getClassFlags(), NEWLINE);
            indent(-1);
            constantWriter.writeConstantPool();
        } else {
            print(" ");
        }

View Full Code Here


    protected void writeField(Field f) {
        if (!options.checkAccess(f.access_flags))
            return;


        AccessFlags flags = f.access_flags;
        writeModifiers(flags.getFieldModifiers());
        Signature_attribute sigAttr = getSignature(f.attributes);
        if (sigAttr == null)
            print(getJavaFieldType(f.descriptor));
        else {
            try {
                Type t = sigAttr.getParsedSignature().getType(constant_pool);
                print(getJavaName(t.toString()));
            } catch (ConstantPoolException e) {
                // report error?
                // fall back on non-generic descriptor
                print(getJavaFieldType(f.descriptor));
            }
        }
        print(" ");
        print(getFieldName(f));
        if (options.showConstants && !options.compat) { // BUG 4111861 print static final field contents
            Attribute a = f.attributes.get(Attribute.ConstantValue);
            if (a instanceof ConstantValue_attribute) {
                print(" = ");
                ConstantValue_attribute cv = (ConstantValue_attribute) a;
                print(getConstantValue(f.descriptor, cv.constantvalue_index));
            }
        }
        print(";");
        println();


        indent(+1);


        if (options.showInternalSignatures)
            println("Signature: " + getValue(f.descriptor));


        if (options.verbose && !options.compat)
            writeList("flags: ", flags.getFieldFlags(), NEWLINE);


        if (options.showAllAttrs) {
            for (Attribute attr: f.attributes)
                attrWriter.write(f, attr, constant_pool);
            println();

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        if (!options.checkAccess(m.access_flags))
            return;


        method = m;


        AccessFlags flags = m.access_flags;


        Descriptor d;
        Type.MethodType methodType;
        List<? extends Type> methodExceptions;


        Signature_attribute sigAttr = getSignature(m.attributes);
        if (sigAttr == null) {
            d = m.descriptor;
            methodType = null;
            methodExceptions = null;
        } else {
            Signature methodSig = sigAttr.getParsedSignature();
            d = methodSig;
            try {
                methodType = (Type.MethodType) methodSig.getType(constant_pool);
                methodExceptions = methodType.throwsTypes;
                if (methodExceptions != null && methodExceptions.isEmpty())
                    methodExceptions = null;
            } catch (ConstantPoolException e) {
                // report error?
                // fall back on standard descriptor
                methodType = null;
                methodExceptions = null;
            }
        }


        writeModifiers(flags.getMethodModifiers());
        if (methodType != null) {
            writeListIfNotEmpty("<", methodType.typeParamTypes, "> ");
        }
        if (getName(m).equals("<init>")) {
            print(getJavaName(classFile));
            print(getJavaParameterTypes(d, flags));
        } else if (getName(m).equals("<clinit>")) {
            print("{}");
        } else {
            print(getJavaReturnType(d));
            print(" ");
            print(getName(m));
            print(getJavaParameterTypes(d, flags));
        }


        Attribute e_attr = m.attributes.get(Attribute.Exceptions);
        if (e_attr != null) { // if there are generic exceptions, there must be erased exceptions
            if (e_attr instanceof Exceptions_attribute) {
                Exceptions_attribute exceptions = (Exceptions_attribute) e_attr;
                print(" throws ");
                if (methodExceptions != null) { // use generic list if available
                    writeList("", methodExceptions, "");
                } else {
                    for (int i = 0; i < exceptions.number_of_exceptions; i++) {
                        if (i > 0)
                            print(", ");
                        print(getJavaException(exceptions, i));
                    }
                }
            } else {
                report("Unexpected or invalid value for Exceptions attribute");
            }
        }


        println(";");


        indent(+1);


        if (options.showInternalSignatures) {
            println("Signature: " + getValue(m.descriptor));
        }


        if (options.verbose && !options.compat) {
            writeList("flags: ", flags.getMethodFlags(), NEWLINE);
        }


        Code_attribute code = null;
        Attribute c_attr = m.attributes.get(Attribute.Code);
        if (c_attr != null) {

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Related Classes of com.sun.tools.classfile.AccessFlags

com.sun.tools.classfile.ClassFile

com.sun.tools.javap.AttributeWriter

com.sun.tools.javap.ClassWriter

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