Examples with InnerClassesAttribute com.oracle.truffle.espresso.classfile.attributes.InnerClassesAttribute used on opensource projects

Example 1 with InnerClassesAttribute

use of com.oracle.truffle.espresso.classfile.attributes.InnerClassesAttribute in project graal by oracle.

the class ObjectKlass method getNestedTypeNames.

@TruffleBoundary
public List<Symbol<Name>> getNestedTypeNames() {
    ArrayList<Symbol<Name>> result = new ArrayList<>();
    InnerClassesAttribute innerClasses = getKlassVersion().innerClasses;
    if (innerClasses != null) {
        for (InnerClassesAttribute.Entry entry : innerClasses.entries()) {
            if (entry.innerClassIndex != 0) {
                result.add(getConstantPool().classAt(entry.innerClassIndex).getName(getConstantPool()));
            }
        }
    }
    return result;
}

Example 2 with InnerClassesAttribute

use of com.oracle.truffle.espresso.classfile.attributes.InnerClassesAttribute in project graal by oracle.

the class ClassfileParser method parseClassAttributes.

private Attribute[] parseClassAttributes() {
    int attributeCount = stream.readU2();
    if (attributeCount == 0) {
        if (maxBootstrapMethodAttrIndex >= 0) {
            throw ConstantPool.classFormatError("BootstrapMethods attribute is missing");
        }
        return Attribute.EMPTY_ARRAY;
    }
    SourceFileAttribute sourceFileName = null;
    SourceDebugExtensionAttribute sourceDebugExtensionAttribute = null;
    NestHostAttribute nestHost = null;
    NestMembersAttribute nestMembers = null;
    EnclosingMethodAttribute enclosingMethod = null;
    BootstrapMethodsAttribute bootstrapMethods = null;
    InnerClassesAttribute innerClasses = null;
    PermittedSubclassesAttribute permittedSubclasses = null;
    RecordAttribute record = null;
    CommonAttributeParser commonAttributeParser = new CommonAttributeParser(InfoType.Class);
    final Attribute[] classAttributes = spawnAttributesArray(attributeCount);
    for (int i = 0; i < attributeCount; i++) {
        final int attributeNameIndex = stream.readU2();
        final Symbol<Name> attributeName = pool.symbolAt(attributeNameIndex, "attribute name");
        final int attributeSize = stream.readS4();
        final int startPosition = stream.getPosition();
        if (attributeName.equals(Name.SourceFile)) {
            if (sourceFileName != null) {
                throw ConstantPool.classFormatError("Duplicate SourceFile attribute");
            }
            classAttributes[i] = sourceFileName = parseSourceFileAttribute(attributeName);
        } else if (attributeName.equals(Name.SourceDebugExtension)) {
            if (sourceDebugExtensionAttribute != null) {
                throw ConstantPool.classFormatError("Duplicate SourceDebugExtension attribute");
            }
            classAttributes[i] = sourceDebugExtensionAttribute = parseSourceDebugExtensionAttribute(attributeName, attributeSize);
        } else if (attributeName.equals(Name.Synthetic)) {
            classFlags |= ACC_SYNTHETIC;
            classAttributes[i] = new Attribute(attributeName, null);
        } else if (attributeName.equals(Name.InnerClasses)) {
            if (innerClasses != null) {
                throw ConstantPool.classFormatError("Duplicate InnerClasses attribute");
            }
            classAttributes[i] = innerClasses = parseInnerClasses(attributeName);
        } else if (majorVersion >= JAVA_1_5_VERSION) {
            if (majorVersion >= JAVA_7_VERSION && attributeName.equals(Name.BootstrapMethods)) {
                if (bootstrapMethods != null) {
                    throw ConstantPool.classFormatError("Duplicate BootstrapMethods attribute");
                }
                classAttributes[i] = bootstrapMethods = parseBootstrapMethods(attributeName);
            } else if (attributeName.equals(Name.EnclosingMethod)) {
                if (enclosingMethod != null) {
                    throw ConstantPool.classFormatError("Duplicate EnclosingMethod attribute");
                }
                classAttributes[i] = enclosingMethod = parseEnclosingMethodAttribute(attributeName);
            } else if (majorVersion >= JAVA_11_VERSION && attributeName.equals(Name.NestHost)) {
                if (nestHost != null) {
                    throw ConstantPool.classFormatError("Duplicate NestHost attribute");
                }
                if (nestMembers != null) {
                    throw ConstantPool.classFormatError("Classfile cannot have both a nest members and a nest host attribute.");
                }
                if (attributeSize != 2) {
                    throw ConstantPool.classFormatError("Attribute length of NestHost must be 2");
                }
                classAttributes[i] = nestHost = parseNestHostAttribute(attributeName);
            } else if (majorVersion >= JAVA_11_VERSION && attributeName.equals(Name.NestMembers)) {
                if (nestMembers != null) {
                    throw ConstantPool.classFormatError("Duplicate NestMembers attribute");
                }
                if (nestHost != null) {
                    throw ConstantPool.classFormatError("Classfile cannot have both a nest members and a nest host attribute.");
                }
                classAttributes[i] = nestMembers = parseNestMembers(attributeName);
            } else if (majorVersion >= JAVA_14_VERSION && attributeName.equals(Name.Record)) {
                if (record != null) {
                    throw ConstantPool.classFormatError("Duplicate Record attribute");
                }
                classAttributes[i] = record = parseRecord(attributeName);
            } else if (majorVersion >= JAVA_17_VERSION && attributeName.equals(Name.PermittedSubclasses)) {
                if (permittedSubclasses != null) {
                    throw ConstantPool.classFormatError("Duplicate PermittedSubclasses attribute");
                }
                classAttributes[i] = permittedSubclasses = parsePermittedSubclasses(attributeName);
            } else {
                Attribute attr = commonAttributeParser.parseCommonAttribute(attributeName, attributeSize);
                // stream.skip(attributeSize);
                classAttributes[i] = attr == null ? new Attribute(attributeName, stream.readByteArray(attributeSize)) : attr;
            }
        } else {
            // stream.skip(attributeSize);
            classAttributes[i] = new Attribute(attributeName, stream.readByteArray(attributeSize));
        }
        if (attributeSize != stream.getPosition() - startPosition) {
            throw ConstantPool.classFormatError("Invalid attribute length for " + attributeName + " attribute");
        }
    }
    if (maxBootstrapMethodAttrIndex >= 0 && bootstrapMethods == null) {
        throw ConstantPool.classFormatError("BootstrapMethods attribute is missing");
    }
    return classAttributes;
}

Example 3 with InnerClassesAttribute

use of com.oracle.truffle.espresso.classfile.attributes.InnerClassesAttribute in project graal by oracle.

the class VM method JVM_GetSimpleBinaryName.

@VmImpl(isJni = true)
@JavaType(String.class)
public StaticObject JVM_GetSimpleBinaryName(@JavaType(Class.class) StaticObject self) {
    Klass k = self.getMirrorKlass();
    if (k.isPrimitive() || k.isArray()) {
        return StaticObject.NULL;
    }
    ObjectKlass klass = (ObjectKlass) k;
    RuntimeConstantPool pool = klass.getConstantPool();
    InnerClassesAttribute inner = klass.getInnerClasses();
    for (InnerClassesAttribute.Entry entry : inner.entries()) {
        int innerClassIndex = entry.innerClassIndex;
        if (innerClassIndex != 0) {
            if (pool.classAt(innerClassIndex).getName(pool) == klass.getName()) {
                if (pool.resolvedKlassAt(k, innerClassIndex) == k) {
                    if (entry.innerNameIndex != 0) {
                        Symbol<Name> innerName = pool.symbolAt(entry.innerNameIndex);
                        return getMeta().toGuestString(innerName);
                    } else {
                        break;
                    }
                }
            }
        }
    }
    return StaticObject.NULL;
}

Example 4 with InnerClassesAttribute

use of com.oracle.truffle.espresso.classfile.attributes.InnerClassesAttribute in project graal by oracle.

the class VM method computeEnclosingClass.

/**
 * Return the enclosing class; or null for: primitives, arrays, anonymous classes (declared
 * inside methods).
 */
private static Klass computeEnclosingClass(ObjectKlass klass) {
    InnerClassesAttribute innerClasses = (InnerClassesAttribute) klass.getAttribute(InnerClassesAttribute.NAME);
    if (innerClasses == null) {
        return null;
    }
    RuntimeConstantPool pool = klass.getConstantPool();
    boolean found = false;
    Klass outerKlass = null;
    for (InnerClassesAttribute.Entry entry : innerClasses.entries()) {
        if (entry.innerClassIndex != 0) {
            Symbol<Name> innerDescriptor = pool.classAt(entry.innerClassIndex).getName(pool);
            // Check decriptors/names before resolving.
            if (innerDescriptor.equals(klass.getName())) {
                Klass innerKlass = pool.resolvedKlassAt(klass, entry.innerClassIndex);
                found = (innerKlass == klass);
                if (found && entry.outerClassIndex != 0) {
                    outerKlass = pool.resolvedKlassAt(klass, entry.outerClassIndex);
                }
            }
        }
        if (found) {
            break;
        }
    }
    // the system could allow a spoof of an inner class to gain access rights.
    return outerKlass;
}

Example 5 with InnerClassesAttribute

use of com.oracle.truffle.espresso.classfile.attributes.InnerClassesAttribute in project graal by oracle.

the class VM method JVM_GetDeclaredClasses.

@VmImpl(isJni = true)
@JavaType(Class[].class)
public StaticObject JVM_GetDeclaredClasses(@JavaType(Class.class) StaticObject self) {
    Meta meta = getMeta();
    Klass klass = self.getMirrorKlass();
    if (klass.isPrimitive() || klass.isArray()) {
        return meta.java_lang_Class.allocateReferenceArray(0);
    }
    ObjectKlass instanceKlass = (ObjectKlass) klass;
    InnerClassesAttribute innerClasses = (InnerClassesAttribute) instanceKlass.getAttribute(InnerClassesAttribute.NAME);
    if (innerClasses == null || innerClasses.entries().length == 0) {
        return meta.java_lang_Class.allocateReferenceArray(0);
    }
    RuntimeConstantPool pool = instanceKlass.getConstantPool();
    List<Klass> innerKlasses = new ArrayList<>();
    for (InnerClassesAttribute.Entry entry : innerClasses.entries()) {
        if (entry.innerClassIndex != 0 && entry.outerClassIndex != 0) {
            // Check to see if the name matches the class we're looking for
            // before attempting to find the class.
            Symbol<Name> outerDescriptor = pool.classAt(entry.outerClassIndex).getName(pool);
            // Check decriptors/names before resolving.
            if (outerDescriptor.equals(instanceKlass.getName())) {
                Klass outerKlass = pool.resolvedKlassAt(instanceKlass, entry.outerClassIndex);
                if (outerKlass == instanceKlass) {
                    Klass innerKlass = pool.resolvedKlassAt(instanceKlass, entry.innerClassIndex);
                    // HotSpot:
                    // Throws an exception if outer klass has not declared k as
                    // an inner klass
                    // Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL);
                    // TODO(peterssen): The check in HotSpot is redundant.
                    innerKlasses.add(innerKlass);
                }
            }
        }
    }
    return meta.java_lang_Class.allocateReferenceArray(innerKlasses.size(), new IntFunction<StaticObject>() {

        @Override
        public StaticObject apply(int index) {
            return innerKlasses.get(index).mirror();
        }
    });
}