Package org.mozilla.javascript

Class NativeJavaArray

    • Constructor Detail

      • NativeJavaArray

        public NativeJavaArray​(Scriptable scope,
                       java.lang.Object array)

    • Method Detail

      • getClassName

        public java.lang.String getClassName()
        Description copied from interface: Scriptable
        Get the name of the set of objects implemented by this Java class. This corresponds to the [[Class]] operation in ECMA and is used by Object.prototype.toString() in ECMA.

        See ECMA 8.6.2 and 15.2.4.2.

        Specified by:
        getClassName in interface Scriptable
        Overrides:
        getClassName in class NativeJavaObject

      • unwrap

        public java.lang.Object unwrap()
        Description copied from interface: Wrapper
        Unwrap the object by returning the wrapped value.
        Specified by:
        unwrap in interface Wrapper
        Overrides:
        unwrap in class NativeJavaObject
        Returns:
        a wrapped value

      • has

        public boolean has​(int index,
                   Scriptable start)
        Description copied from interface: Scriptable
        Indicates whether or not an indexed property is defined in an object. Does not traverse the prototype chain.

        The property is specified by an integral index as defined for the get method.

        Specified by:
        has in interface Scriptable
        Overrides:
        has in class NativeJavaObject
        Parameters:
        index - the numeric index for the property
        start - the object in which the lookup began
        Returns:
        true if and only if the indexed property is found in the object
        See Also:
        Scriptable.get(int, Scriptable), ScriptableObject.getProperty(Scriptable, int)

      • get

        public java.lang.Object get​(java.lang.String id,
                            Scriptable start)
        Description copied from interface: Scriptable
        Get a named property from the object. Looks property up in this object and returns the associated value if found. Returns NOT_FOUND if not found. Note that this method is not expected to traverse the prototype chain. This is different from the ECMA [[Get]] operation. Depending on the property selector, the runtime will call this method or the form of get that takes an integer:
        JavaScript codeJava code
        a.b a.get("b", a)
        a["foo"] a.get("foo", a)
        a[3] a.get(3, a)
        a["3"] a.get(3, a)
        a[3.0] a.get(3, a)
        a["3.0"] a.get("3.0", a)
        a[1.1] a.get("1.1", a)
        a[-4] a.get(-4, a)

        The values that may be returned are limited to the following:

        • java.lang.Boolean objects
        • java.lang.String objects
        • java.lang.Number objects
        • org.mozilla.javascript.Scriptable objects
        • null
        • The value returned by Context.getUndefinedValue()
        • NOT_FOUND
        Specified by:
        get in interface Scriptable
        Overrides:
        get in class NativeJavaObject
        Parameters:
        id - the name of the property
        start - the object in which the lookup began
        Returns:
        the value of the property (may be null), or NOT_FOUND
        See Also:
        Context.getUndefinedValue()

      • get

        public java.lang.Object get​(int index,
                            Scriptable start)
        Description copied from interface: Scriptable
        Get a property from the object selected by an integral index. Identical to get(String, Scriptable) except that an integral index is used to select the property.
        Specified by:
        get in interface Scriptable
        Overrides:
        get in class NativeJavaObject
        Parameters:
        index - the numeric index for the property
        start - the object in which the lookup began
        Returns:
        the value of the property (may be null), or NOT_FOUND
        See Also:
        Scriptable.get(String,Scriptable)

      • put

        public void put​(java.lang.String id,
                Scriptable start,
                java.lang.Object value)
        Description copied from interface: Scriptable
        Sets a named property in this object.

        The property is specified by a string name as defined for get.

        The possible values that may be passed in are as defined for get. A class that implements this method may choose to ignore calls to set certain properties, in which case those properties are effectively read-only.

        For properties defined in a prototype chain, use putProperty in ScriptableObject.

        Note that if a property a is defined in the prototype p of an object o, then evaluating o.a = 23 will cause set to be called on the prototype p with o as the start parameter. To preserve JavaScript semantics, it is the Scriptable object's responsibility to modify o.

        This design allows properties to be defined in prototypes and implemented in terms of getters and setters of Java values without consuming slots in each instance.

        The values that may be set are limited to the following:

        • java.lang.Boolean objects
        • java.lang.String objects
        • java.lang.Number objects
        • org.mozilla.javascript.Scriptable objects
        • null
        • The value returned by Context.getUndefinedValue()

        Arbitrary Java objects may be wrapped in a Scriptable by first calling Context.toObject. This allows the property of a JavaScript object to contain an arbitrary Java object as a value.

        Note that has will be called by the runtime first before set is called to determine in which object the property is defined. Note that this method is not expected to traverse the prototype chain, which is different from the ECMA [[Put]] operation.

        Specified by:
        put in interface Scriptable
        Overrides:
        put in class NativeJavaObject
        Parameters:
        id - the name of the property
        start - the object whose property is being set
        value - value to set the property to
        See Also:
        Scriptable.has(String, Scriptable), Scriptable.get(String, Scriptable), ScriptableObject.putProperty(Scriptable, String, Object), Context.toObject(Object, Scriptable)

      • getDefaultValue

        public java.lang.Object getDefaultValue​(java.lang.Class<?> hint)
        Description copied from interface: Scriptable
        Get the default value of the object with a given hint. The hints are String.class for type String, Number.class for type Number, Scriptable.class for type Object, and Boolean.class for type Boolean.

        A hint of null means "no hint". See ECMA 8.6.2.6.

        Specified by:
        getDefaultValue in interface Scriptable
        Overrides:
        getDefaultValue in class NativeJavaObject
        Parameters:
        hint - the type hint
        Returns:
        the default value

      • getIds

        public java.lang.Object[] getIds()
        Description copied from interface: Scriptable
        Get an array of property ids. Not all property ids need be returned. Those properties whose ids are not returned are considered non-enumerable.
        Specified by:
        getIds in interface Scriptable
        Overrides:
        getIds in class NativeJavaObject
        Returns:
        an array of Objects. Each entry in the array is either a java.lang.String or a java.lang.Number

      • hasInstance

        public boolean hasInstance​(Scriptable value)
        Description copied from interface: Scriptable
        The instanceof operator.

        The JavaScript code "lhs instanceof rhs" causes rhs.hasInstance(lhs) to be called.

        The return value is implementation dependent so that embedded host objects can return an appropriate value. See the JS 1.3 language documentation for more detail.

        This operator corresponds to the proposed EMCA [[HasInstance]] operator.

        Specified by:
        hasInstance in interface Scriptable
        Overrides:
        hasInstance in class NativeJavaObject
        Parameters:
        value - The value that appeared on the LHS of the instanceof operator
        Returns:
        an implementation dependent value