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author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
tree | 10027f336435511475e392454359edea8e25895d /toolkit/components/url-classifier/content/moz/lang.js | |
parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
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Add m-esr52 at 52.6.0
Diffstat (limited to 'toolkit/components/url-classifier/content/moz/lang.js')
-rw-r--r-- | toolkit/components/url-classifier/content/moz/lang.js | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/toolkit/components/url-classifier/content/moz/lang.js b/toolkit/components/url-classifier/content/moz/lang.js new file mode 100644 index 000000000..804a6e973 --- /dev/null +++ b/toolkit/components/url-classifier/content/moz/lang.js @@ -0,0 +1,82 @@ +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + + +/** + * lang.js - Some missing JavaScript language features + */ + +/** + * Partially applies a function to a particular "this object" and zero or + * more arguments. The result is a new function with some arguments of the first + * function pre-filled and the value of |this| "pre-specified". + * + * Remaining arguments specified at call-time are appended to the pre- + * specified ones. + * + * Usage: + * var barMethBound = BindToObject(myFunction, myObj, "arg1", "arg2"); + * barMethBound("arg3", "arg4"); + * + * @param fn {string} Reference to the function to be bound + * + * @param self {object} Specifies the object which |this| should point to + * when the function is run. If the value is null or undefined, it will default + * to the global object. + * + * @returns {function} A partially-applied form of the speficied function. + */ +this.BindToObject = function BindToObject(fn, self, opt_args) { + var boundargs = fn.boundArgs_ || []; + boundargs = boundargs.concat(Array.slice(arguments, 2, arguments.length)); + + if (fn.boundSelf_) + self = fn.boundSelf_; + if (fn.boundFn_) + fn = fn.boundFn_; + + var newfn = function() { + // Combine the static args and the new args into one big array + var args = boundargs.concat(Array.slice(arguments)); + return fn.apply(self, args); + } + + newfn.boundArgs_ = boundargs; + newfn.boundSelf_ = self; + newfn.boundFn_ = fn; + + return newfn; +} + +/** + * Inherit the prototype methods from one constructor into another. + * + * Usage: + * + * function ParentClass(a, b) { } + * ParentClass.prototype.foo = function(a) { } + * + * function ChildClass(a, b, c) { + * ParentClass.call(this, a, b); + * } + * + * ChildClass.inherits(ParentClass); + * + * var child = new ChildClass("a", "b", "see"); + * child.foo(); // works + * + * In addition, a superclass' implementation of a method can be invoked + * as follows: + * + * ChildClass.prototype.foo = function(a) { + * ChildClass.superClass_.foo.call(this, a); + * // other code + * }; + */ +Function.prototype.inherits = function(parentCtor) { + var tempCtor = function(){}; + tempCtor.prototype = parentCtor.prototype; + this.superClass_ = parentCtor.prototype; + this.prototype = new tempCtor(); +} |