import defaultValue from './defaultValue.js';
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import DeveloperError from './DeveloperError.js';
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function returnTrue() {
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return true;
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}
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/**
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* Destroys an object. Each of the object's functions, including functions in its prototype,
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* is replaced with a function that throws a {@link DeveloperError}, except for the object's
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* <code>isDestroyed</code> function, which is set to a function that returns <code>true</code>.
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* The object's properties are removed with <code>delete</code>.
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* <br /><br />
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* This function is used by objects that hold native resources, e.g., WebGL resources, which
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* need to be explicitly released. Client code calls an object's <code>destroy</code> function,
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* which then releases the native resource and calls <code>destroyObject</code> to put itself
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* in a destroyed state.
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*
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* @exports destroyObject
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*
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* @param {Object} object The object to destroy.
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* @param {String} [message] The message to include in the exception that is thrown if
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* a destroyed object's function is called.
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*
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*
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* @example
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* // How a texture would destroy itself.
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* this.destroy = function () {
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* _gl.deleteTexture(_texture);
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* return Cesium.destroyObject(this);
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* };
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*
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* @see DeveloperError
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*/
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function destroyObject(object, message) {
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message = defaultValue(message, 'This object was destroyed, i.e., destroy() was called.');
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function throwOnDestroyed() {
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//>>includeStart('debug', pragmas.debug);
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throw new DeveloperError(message);
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//>>includeEnd('debug');
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}
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for ( var key in object) {
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if (typeof object[key] === 'function') {
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object[key] = throwOnDestroyed;
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}
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}
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object.isDestroyed = returnTrue;
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return undefined;
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}
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export default destroyObject;
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