jdk.nashorn.internal.codegen.ObjectClassGenerator Java Examples

private Object createObject(final PropertyMap propertyMap, final List<Object> values, final ArrayData arrayData) {
    final long[] primitiveSpill = dualFields ? new long[values.size()] : null;
    final Object[] objectSpill = new Object[values.size()];

    for (final Property property : propertyMap.getProperties()) {
        if (!dualFields || property.getType() == Object.class) {
            objectSpill[property.getSlot()] = values.get(property.getSlot());
        } else {
            primitiveSpill[property.getSlot()] = ObjectClassGenerator.pack((Number) values.get(property.getSlot()));
        }
    }

    final ScriptObject object = dualFields ?
            new JD(propertyMap, primitiveSpill, objectSpill) : new JO(propertyMap, null, objectSpill);
    object.setInitialProto(global.getObjectPrototype());
    object.setArray(arrayData);
    return object;
}
 

private Object createObject(final PropertyMap propertyMap, final List<Object> values, final ArrayData arrayData) {
    final long[] primitiveSpill = dualFields ? new long[values.size()] : null;
    final Object[] objectSpill = new Object[values.size()];

    for (final Property property : propertyMap.getProperties()) {
        if (!dualFields || property.getType() == Object.class) {
            objectSpill[property.getSlot()] = values.get(property.getSlot());
        } else {
            primitiveSpill[property.getSlot()] = ObjectClassGenerator.pack((Number) values.get(property.getSlot()));
        }
    }

    final ScriptObject object = dualFields ?
            new JD(propertyMap, primitiveSpill, objectSpill) : new JO(propertyMap, null, objectSpill);
    object.setInitialProto(global.getObjectPrototype());
    object.setArray(arrayData);
    return object;
}
 

private Object createObject(final PropertyMap propertyMap, final List<Object> values, final ArrayData arrayData) {
    final long[] primitiveSpill = dualFields ? new long[values.size()] : null;
    final Object[] objectSpill = new Object[values.size()];

    for (final Property property : propertyMap.getProperties()) {
        if (!dualFields || property.getType() == Object.class) {
            objectSpill[property.getSlot()] = values.get(property.getSlot());
        } else {
            primitiveSpill[property.getSlot()] = ObjectClassGenerator.pack((Number) values.get(property.getSlot()));
        }
    }

    final ScriptObject object = dualFields ?
            new JD(propertyMap, primitiveSpill, objectSpill) : new JO(propertyMap, null, objectSpill);
    object.setInitialProto(global.getObjectPrototype());
    object.setArray(arrayData);
    return object;
}
 

private Object createObject(final PropertyMap propertyMap, final List<Object> values, final ArrayData arrayData) {
    final long[] primitiveSpill = dualFields ? new long[values.size()] : null;
    final Object[] objectSpill = new Object[values.size()];

    for (final Property property : propertyMap.getProperties()) {
        if (!dualFields || property.getType() == Object.class) {
            objectSpill[property.getSlot()] = values.get(property.getSlot());
        } else {
            primitiveSpill[property.getSlot()] = ObjectClassGenerator.pack((Number) values.get(property.getSlot()));
        }
    }

    final ScriptObject object = dualFields ?
            new JD(propertyMap, primitiveSpill, objectSpill) : new JO(propertyMap, null, objectSpill);
    object.setInitialProto(global.getObjectPrototype());
    object.setArray(arrayData);
    return object;
}
 

private Object createObject(final PropertyMap propertyMap, final List<Object> values, final ArrayData arrayData) {
    final long[] primitiveSpill = dualFields ? new long[values.size()] : null;
    final Object[] objectSpill = new Object[values.size()];

    for (final Property property : propertyMap.getProperties()) {
        if (!dualFields || property.getType() == Object.class) {
            objectSpill[property.getSlot()] = values.get(property.getSlot());
        } else {
            primitiveSpill[property.getSlot()] = ObjectClassGenerator.pack((Number) values.get(property.getSlot()));
        }
    }

    final ScriptObject object = dualFields ?
            new JD(propertyMap, primitiveSpill, objectSpill) : new JO(propertyMap, null, objectSpill);
    object.setInitialProto(global.getObjectPrototype());
    object.setArray(arrayData);
    return object;
}
 

private Object createObject(final PropertyMap propertyMap, final List<Object> values, final ArrayData arrayData) {
    final long[] primitiveSpill = dualFields ? new long[values.size()] : null;
    final Object[] objectSpill = new Object[values.size()];

    for (final Property property : propertyMap.getProperties()) {
        if (!dualFields || property.getType() == Object.class) {
            objectSpill[property.getSlot()] = values.get(property.getSlot());
        } else {
            primitiveSpill[property.getSlot()] = ObjectClassGenerator.pack((Number) values.get(property.getSlot()));
        }
    }

    final ScriptObject object = dualFields ?
            new JD(propertyMap, primitiveSpill, objectSpill) : new JO(propertyMap, null, objectSpill);
    object.setInitialProto(global.getObjectPrototype());
    object.setArray(arrayData);
    return object;
}
 

private Object createObject(final PropertyMap propertyMap, final List<Object> values, final ArrayData arrayData) {
    final long[] primitiveSpill = dualFields ? new long[values.size()] : null;
    final Object[] objectSpill = new Object[values.size()];

    for (final Property property : propertyMap.getProperties()) {
        if (!dualFields || property.getType() == Object.class) {
            objectSpill[property.getSlot()] = values.get(property.getSlot());
        } else {
            primitiveSpill[property.getSlot()] = ObjectClassGenerator.pack((Number) values.get(property.getSlot()));
        }
    }

    final ScriptObject object = dualFields ?
            new JD(propertyMap, primitiveSpill, objectSpill) : new JO(propertyMap, null, objectSpill);
    object.setInitialProto(global.getObjectPrototype());
    object.setArray(arrayData);
    return object;
}
 

private String getAllocatorClassName() {
    if (allocatorClassName == null) {
        // These classes get loaded, so an interned variant of their name is most likely around anyway.
        allocatorClassName = Compiler.binaryName(ObjectClassGenerator.getClassName(fieldCount, dualFields)).intern();
    }
    return allocatorClassName;
}
 

/**
 * Generate a layout class.
 * @param name       Name of class.
 * @param descriptor Layout descriptor.
 * @return Generated class.
 */
private Class<?> generateClass(final String name, final String descriptor, final boolean dualFields) {
    final Context context = Context.getContextTrusted();

    final byte[] code = new ObjectClassGenerator(context, dualFields).generate(descriptor);
    return defineClass(name, code, 0, code.length, new ProtectionDomain(null, getPermissions(null)));
}
 

/**
 * Generate a layout class.
 * @param name       Name of class.
 * @param descriptor Layout descriptor.
 * @return Generated class.
 */
private Class<?> generateClass(final String name, final String descriptor, final boolean dualFields) {
    final Context context = Context.getContextTrusted();

    final byte[] code = new ObjectClassGenerator(context, dualFields).generate(descriptor);
    return defineClass(name, code, 0, code.length, new ProtectionDomain(null, getPermissions(null)));
}
 

private String getAllocatorClassName() {
    if (allocatorClassName == null) {
        // These classes get loaded, so an interned variant of their name is most likely around anyway.
        allocatorClassName = Compiler.binaryName(ObjectClassGenerator.getClassName(fieldCount, dualFields)).intern();
    }
    return allocatorClassName;
}
 

public GettersSetters(Class<?> structure) {
    final int fieldCount = ObjectClassGenerator.getFieldCount(structure);
    getters = new MethodHandle[fieldCount];
    setters = new MethodHandle[fieldCount];
    for(int i = 0; i < fieldCount; ++i) {
        final String fieldName = ObjectClassGenerator.getFieldName(i, Type.OBJECT);
        getters[i] = MH.asType(MH.getter(lookup, structure, fieldName, Type.OBJECT.getTypeClass()), Lookup.GET_OBJECT_TYPE);
        setters[i] = MH.asType(MH.setter(lookup, structure, fieldName, Type.OBJECT.getTypeClass()), Lookup.SET_OBJECT_TYPE);
    }
}
 

/**
 * Generate a layout class.
 * @param name       Name of class.
 * @param descriptor Layout descriptor.
 * @return Generated class.
 */
private Class<?> generateClass(final String name, final String descriptor) {
    final Context context = Context.getContextTrusted();

    final byte[] code = new ObjectClassGenerator(context).generate(descriptor);
    return defineClass(name, code, 0, code.length, new ProtectionDomain(null, getPermissions(null)));
}
 

/**
 * Generate a layout class.
 * @param name       Name of class.
 * @param descriptor Layout descriptor.
 * @return Generated class.
 */
private Class<?> generateClass(final String name, final String descriptor) {
    final Context context = Context.getContextTrusted();

    final byte[] code = new ObjectClassGenerator(context).generate(descriptor);
    return defineClass(name, code, 0, code.length, new ProtectionDomain(null, getPermissions(null)));
}
 

public GettersSetters(Class<?> structure) {
    final int fieldCount = ObjectClassGenerator.getFieldCount(structure);
    getters = new MethodHandle[fieldCount];
    setters = new MethodHandle[fieldCount];
    for(int i = 0; i < fieldCount; ++i) {
        final String fieldName = ObjectClassGenerator.getFieldName(i, Type.OBJECT);
        getters[i] = MH.asType(MH.getter(lookup, structure, fieldName, Type.OBJECT.getTypeClass()), Lookup.GET_OBJECT_TYPE);
        setters[i] = MH.asType(MH.setter(lookup, structure, fieldName, Type.OBJECT.getTypeClass()), Lookup.SET_OBJECT_TYPE);
    }
}
 

private String getAllocatorClassName() {
    if (allocatorClassName == null) {
        // These classes get loaded, so an interned variant of their name is most likely around anyway.
        allocatorClassName = Compiler.binaryName(ObjectClassGenerator.getClassName(fieldCount, dualFields)).intern();
    }
    return allocatorClassName;
}
 

/**
 * Generate a layout class.
 * @param name       Name of class.
 * @param descriptor Layout descriptor.
 * @return Generated class.
 */
private Class<?> generateClass(final String name, final String descriptor, final boolean dualFields) {
    final Context context = Context.getContextTrusted();

    final byte[] code = new ObjectClassGenerator(context, dualFields).generate(descriptor);
    return defineClass(name, code, 0, code.length, new ProtectionDomain(null, getPermissions(null)));
}
 

public GettersSetters(Class<?> structure) {
    final int fieldCount = ObjectClassGenerator.getFieldCount(structure);
    getters = new MethodHandle[fieldCount];
    setters = new MethodHandle[fieldCount];
    for(int i = 0; i < fieldCount; ++i) {
        final String fieldName = ObjectClassGenerator.getFieldName(i, Type.OBJECT);
        getters[i] = MH.asType(MH.getter(lookup, structure, fieldName, Type.OBJECT.getTypeClass()), Lookup.GET_OBJECT_TYPE);
        setters[i] = MH.asType(MH.setter(lookup, structure, fieldName, Type.OBJECT.getTypeClass()), Lookup.SET_OBJECT_TYPE);
    }
}
 

/**
 * Generate a layout class.
 * @param name       Name of class.
 * @param descriptor Layout descriptor.
 * @return Generated class.
 */
private Class<?> generateClass(final String name, final String descriptor) {
    final Context context = Context.getContextTrusted();

    final byte[] code = new ObjectClassGenerator(context).generate(descriptor);
    return defineClass(name, code, 0, code.length, new ProtectionDomain(null, getPermissions(null)));
}
 

private static GuardedInvocation findMegaMorphicSetMethod(final CallSiteDescriptor desc, final String name) {
    Context.getContextTrusted().getLogger(ObjectClassGenerator.class).warning("Megamorphic setter: ", desc, " ", name);
    final MethodType        type = desc.getMethodType().insertParameterTypes(1, Object.class);
    //never bother with ClassCastExceptionGuard for megamorphic callsites
    final GuardedInvocation inv = findSetIndexMethod(desc, false, type);
    return inv.replaceMethods(MH.insertArguments(inv.getInvocation(), 1, name), inv.getGuard());
}
 

@Override
public IdentNode setType(final TemporarySymbols ts, final LexicalContext lc, final Type type) {
    // do NOT, repeat NOT touch the symbol here. it might be a local variable or whatever. This is the override if it isn't
    if (this.callSiteType == type) {
        return this;
    }
    if (DEBUG_FIELDS && getSymbol() != null && !Type.areEquivalent(getSymbol().getSymbolType(), type)) {
        ObjectClassGenerator.LOG.info(getClass().getName(), " ", this, " => ", type, " instead of ", getType());
    }

    return new IdentNode(this, name, type, flags);
}
 

private String getAllocatorClassName() {
    if (allocatorClassName == null) {
        // These classes get loaded, so an interned variant of their name is most likely around anyway.
        allocatorClassName = Compiler.binaryName(ObjectClassGenerator.getClassName(fieldCount, dualFields)).intern();
    }
    return allocatorClassName;
}
 

/**
 * Generate a layout class.
 * @param name       Name of class.
 * @param descriptor Layout descriptor.
 * @return Generated class.
 */
private Class<?> generateClass(final String name, final String descriptor, final boolean dualFields) {
    final Context context = Context.getContextTrusted();

    final byte[] code = new ObjectClassGenerator(context, dualFields).generate(descriptor);
    return defineClass(name, code, 0, code.length, new ProtectionDomain(null, getPermissions(null)));
}
 

/**
 * Generate a layout class.
 * @param name       Name of class.
 * @param descriptor Layout descriptor.
 * @return Generated class.
 */
private Class<?> generateClass(final String name, final String descriptor, final boolean dualFields) {
    final Context context = Context.getContextTrusted();

    final byte[] code = new ObjectClassGenerator(context, dualFields).generate(descriptor);
    return defineClass(name, code, 0, code.length, new ProtectionDomain(null, getPermissions(null)));
}
 

private String getAllocatorClassName() {
    if (allocatorClassName == null) {
        // These classes get loaded, so an interned variant of their name is most likely around anyway.
        allocatorClassName = Compiler.binaryName(ObjectClassGenerator.getClassName(fieldCount, dualFields)).intern();
    }
    return allocatorClassName;
}
 

/**
 * Generate a layout class.
 * @param name       Name of class.
 * @param descriptor Layout descriptor.
 * @return Generated class.
 */
private Class<?> generateClass(final String name, final String descriptor, final boolean dualFields) {
    final Context context = Context.getContextTrusted();

    final byte[] code = new ObjectClassGenerator(context, dualFields).generate(descriptor);
    return defineClass(name, code, 0, code.length, new ProtectionDomain(null, getPermissions(null)));
}
 

private String getAllocatorClassName() {
    if (allocatorClassName == null) {
        // These classes get loaded, so an interned variant of their name is most likely around anyway.
        allocatorClassName = Compiler.binaryName(ObjectClassGenerator.getClassName(fieldCount, dualFields)).intern();
    }
    return allocatorClassName;
}
 

private String getAllocatorClassName() {
    if (allocatorClassName == null) {
        // These classes get loaded, so an interned variant of their name is most likely around anyway.
        allocatorClassName = Compiler.binaryName(ObjectClassGenerator.getClassName(fieldCount, dualFields)).intern();
    }
    return allocatorClassName;
}
 

/**
 * Generate a layout class.
 * @param name       Name of class.
 * @param descriptor Layout descriptor.
 * @return Generated class.
 */
private Class<?> generateClass(final String name, final String descriptor, final boolean dualFields) {
    final Context context = Context.getContextTrusted();

    final byte[] code = new ObjectClassGenerator(context, dualFields).generate(descriptor);
    return defineClass(name, code, 0, code.length, new ProtectionDomain(null, getPermissions(null)));
}
 

@Override
public Type loadUndefined(final MethodVisitor method) {
    method.visitLdcInsn(ObjectClassGenerator.UNDEFINED_DOUBLE);
    return NUMBER;
}