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Diffstat (limited to 'utils/lib/test/equiv.js')
| -rwxr-xr-x | utils/lib/test/equiv.js | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/utils/lib/test/equiv.js b/utils/lib/test/equiv.js deleted file mode 100755 index 9628119..0000000 --- a/utils/lib/test/equiv.js +++ /dev/null @@ -1,188 +0,0 @@ -// Hoozit -// Determine what is o. -function hoozit(o) { - if (typeof o === "string") { - return "string"; - - } else if (typeof o === "boolean") { - return "boolean"; - - } else if (typeof o === "number") { - - if (isNaN(o)) { - return "nan"; - } else { - return "number"; - } - - } else if (typeof o === "undefined") { - return "undefined"; - - // consider: typeof null === object - } else if (o === null) { - return "null"; - - // consider: typeof [] === object - } else if (o instanceof Array) { - return "array"; - - // consider: typeof new Date() === object - } else if (o instanceof Date) { - return "date"; - - // consider: /./ instanceof Object; - // /./ instanceof RegExp; - // typeof /./ === "function"; // => false in IE and Opera, - // true in FF and Safari - } else if (o instanceof RegExp) { - return "regexp"; - - } else if (typeof o === "object") { - return "object"; - - } else if (o instanceof Function) { - return "function"; - } -} - -// Call the o related callback with the given arguments. -function bindCallbacks(o, callbacks, args) { - var prop = hoozit(o); - if (prop) { - if (hoozit(callbacks[prop]) === "function") { - return callbacks[prop].apply(callbacks, args); - } else { - return callbacks[prop]; // or undefined - } - } -} - -// Equiv -// Test for equality any JavaScript type. -// Discussions and reference: http://philrathe.com/articles/equiv -// Test suites: http://philrathe.com/tests/equiv -// Author: Philippe Rathé <prathe@gmail.com> -var equiv = exports.equiv = function () { - - var innerEquiv; // the real equiv function - var callers = []; // stack to decide between skip/abort functions - - - var callbacks = function () { - - // for string, boolean, number and null - function useStrictEquality(b, a) { - return a === b; - } - - return { - "string": useStrictEquality, - "boolean": useStrictEquality, - "number": useStrictEquality, - "null": useStrictEquality, - "undefined": useStrictEquality, - - "nan": function (b) { - return isNaN(b); - }, - - "date": function (b, a) { - return hoozit(b) === "date" && a.valueOf() === b.valueOf(); - }, - - "regexp": function (b, a) { - return hoozit(b) === "regexp" && - a.source === b.source && // the regex itself - a.global === b.global && // and its modifers (gmi) ... - a.ignoreCase === b.ignoreCase && - a.multiline === b.multiline; - }, - - // - skip when the property is a method of an instance (OOP) - // - abort otherwise, - // initial === would have catch identical references anyway - "function": function () { - var caller = callers[callers.length - 1]; - return caller !== Object && - typeof caller !== "undefined"; - }, - - "array": function (b, a) { - var i; - var len; - - // b could be an object literal here - if ( ! (hoozit(b) === "array")) { - return false; - } - - len = a.length; - if (len !== b.length) { // safe and faster - return false; - } - for (i = 0; i < len; i++) { - if( ! innerEquiv(a[i], b[i])) { - return false; - } - } - return true; - }, - - "object": function (b, a) { - var i; - var eq = true; // unless we can proove it - var aProperties = [], bProperties = []; // collection of strings - - // comparing constructors is more strict than using instanceof - if ( a.constructor !== b.constructor) { - return false; - } - - // stack constructor before traversing properties - callers.push(a.constructor); - - for (i in a) { // be strict: don't ensures hasOwnProperty and go deep - - aProperties.push(i); // collect a's properties - - if ( ! innerEquiv(a[i], b[i])) { - eq = false; - } - } - - callers.pop(); // unstack, we are done - - for (i in b) { - bProperties.push(i); // collect b's properties - } - - // Ensures identical properties name - return eq && innerEquiv(aProperties.sort(), bProperties.sort()); - } - }; - }(); - - innerEquiv = function () { // can take multiple arguments - var args = Array.prototype.slice.apply(arguments); - if (args.length < 2) { - return true; // end transition - } - - return (function (a, b) { - if (a === b) { - return true; // catch the most you can - - } else if (typeof a !== typeof b || a === null || b === null || typeof a === "undefined" || typeof b === "undefined") { - return false; // don't lose time with error prone cases - - } else { - return bindCallbacks(a, callbacks, [b, a]); - } - - // apply transition with (1..n) arguments - })(args[0], args[1]) && arguments.callee.apply(this, args.splice(1, args.length -1)); - }; - - return innerEquiv; - -}();
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