--- /dev/null
+var mapping = require('./_mapping'),
+ fallbackHolder = require('./placeholder');
+
+/** Built-in value reference. */
+var push = Array.prototype.push;
+
+/**
+ * Creates a function, with an arity of `n`, that invokes `func` with the
+ * arguments it receives.
+ *
+ * @private
+ * @param {Function} func The function to wrap.
+ * @param {number} n The arity of the new function.
+ * @returns {Function} Returns the new function.
+ */
+function baseArity(func, n) {
+ return n == 2
+ ? function(a, b) { return func.apply(undefined, arguments); }
+ : function(a) { return func.apply(undefined, arguments); };
+}
+
+/**
+ * Creates a function that invokes `func`, with up to `n` arguments, ignoring
+ * any additional arguments.
+ *
+ * @private
+ * @param {Function} func The function to cap arguments for.
+ * @param {number} n The arity cap.
+ * @returns {Function} Returns the new function.
+ */
+function baseAry(func, n) {
+ return n == 2
+ ? function(a, b) { return func(a, b); }
+ : function(a) { return func(a); };
+}
+
+/**
+ * Creates a clone of `array`.
+ *
+ * @private
+ * @param {Array} array The array to clone.
+ * @returns {Array} Returns the cloned array.
+ */
+function cloneArray(array) {
+ var length = array ? array.length : 0,
+ result = Array(length);
+
+ while (length--) {
+ result[length] = array[length];
+ }
+ return result;
+}
+
+/**
+ * Creates a function that clones a given object using the assignment `func`.
+ *
+ * @private
+ * @param {Function} func The assignment function.
+ * @returns {Function} Returns the new cloner function.
+ */
+function createCloner(func) {
+ return function(object) {
+ return func({}, object);
+ };
+}
+
+/**
+ * A specialized version of `_.spread` which flattens the spread array into
+ * the arguments of the invoked `func`.
+ *
+ * @private
+ * @param {Function} func The function to spread arguments over.
+ * @param {number} start The start position of the spread.
+ * @returns {Function} Returns the new function.
+ */
+function flatSpread(func, start) {
+ return function() {
+ var length = arguments.length,
+ lastIndex = length - 1,
+ args = Array(length);
+
+ while (length--) {
+ args[length] = arguments[length];
+ }
+ var array = args[start],
+ otherArgs = args.slice(0, start);
+
+ if (array) {
+ push.apply(otherArgs, array);
+ }
+ if (start != lastIndex) {
+ push.apply(otherArgs, args.slice(start + 1));
+ }
+ return func.apply(this, otherArgs);
+ };
+}
+
+/**
+ * Creates a function that wraps `func` and uses `cloner` to clone the first
+ * argument it receives.
+ *
+ * @private
+ * @param {Function} func The function to wrap.
+ * @param {Function} cloner The function to clone arguments.
+ * @returns {Function} Returns the new immutable function.
+ */
+function wrapImmutable(func, cloner) {
+ return function() {
+ var length = arguments.length;
+ if (!length) {
+ return;
+ }
+ var args = Array(length);
+ while (length--) {
+ args[length] = arguments[length];
+ }
+ var result = args[0] = cloner.apply(undefined, args);
+ func.apply(undefined, args);
+ return result;
+ };
+}
+
+/**
+ * The base implementation of `convert` which accepts a `util` object of methods
+ * required to perform conversions.
+ *
+ * @param {Object} util The util object.
+ * @param {string} name The name of the function to convert.
+ * @param {Function} func The function to convert.
+ * @param {Object} [options] The options object.
+ * @param {boolean} [options.cap=true] Specify capping iteratee arguments.
+ * @param {boolean} [options.curry=true] Specify currying.
+ * @param {boolean} [options.fixed=true] Specify fixed arity.
+ * @param {boolean} [options.immutable=true] Specify immutable operations.
+ * @param {boolean} [options.rearg=true] Specify rearranging arguments.
+ * @returns {Function|Object} Returns the converted function or object.
+ */
+function baseConvert(util, name, func, options) {
+ var setPlaceholder,
+ isLib = typeof name == 'function',
+ isObj = name === Object(name);
+
+ if (isObj) {
+ options = func;
+ func = name;
+ name = undefined;
+ }
+ if (func == null) {
+ throw new TypeError;
+ }
+ options || (options = {});
+
+ var config = {
+ 'cap': 'cap' in options ? options.cap : true,
+ 'curry': 'curry' in options ? options.curry : true,
+ 'fixed': 'fixed' in options ? options.fixed : true,
+ 'immutable': 'immutable' in options ? options.immutable : true,
+ 'rearg': 'rearg' in options ? options.rearg : true
+ };
+
+ var forceCurry = ('curry' in options) && options.curry,
+ forceFixed = ('fixed' in options) && options.fixed,
+ forceRearg = ('rearg' in options) && options.rearg,
+ placeholder = isLib ? func : fallbackHolder,
+ pristine = isLib ? func.runInContext() : undefined;
+
+ var helpers = isLib ? func : {
+ 'ary': util.ary,
+ 'assign': util.assign,
+ 'clone': util.clone,
+ 'curry': util.curry,
+ 'forEach': util.forEach,
+ 'isArray': util.isArray,
+ 'isFunction': util.isFunction,
+ 'iteratee': util.iteratee,
+ 'keys': util.keys,
+ 'rearg': util.rearg,
+ 'toInteger': util.toInteger,
+ 'toPath': util.toPath
+ };
+
+ var ary = helpers.ary,
+ assign = helpers.assign,
+ clone = helpers.clone,
+ curry = helpers.curry,
+ each = helpers.forEach,
+ isArray = helpers.isArray,
+ isFunction = helpers.isFunction,
+ keys = helpers.keys,
+ rearg = helpers.rearg,
+ toInteger = helpers.toInteger,
+ toPath = helpers.toPath;
+
+ var aryMethodKeys = keys(mapping.aryMethod);
+
+ var wrappers = {
+ 'castArray': function(castArray) {
+ return function() {
+ var value = arguments[0];
+ return isArray(value)
+ ? castArray(cloneArray(value))
+ : castArray.apply(undefined, arguments);
+ };
+ },
+ 'iteratee': function(iteratee) {
+ return function() {
+ var func = arguments[0],
+ arity = arguments[1],
+ result = iteratee(func, arity),
+ length = result.length;
+
+ if (config.cap && typeof arity == 'number') {
+ arity = arity > 2 ? (arity - 2) : 1;
+ return (length && length <= arity) ? result : baseAry(result, arity);
+ }
+ return result;
+ };
+ },
+ 'mixin': function(mixin) {
+ return function(source) {
+ var func = this;
+ if (!isFunction(func)) {
+ return mixin(func, Object(source));
+ }
+ var pairs = [];
+ each(keys(source), function(key) {
+ if (isFunction(source[key])) {
+ pairs.push([key, func.prototype[key]]);
+ }
+ });
+
+ mixin(func, Object(source));
+
+ each(pairs, function(pair) {
+ var value = pair[1];
+ if (isFunction(value)) {
+ func.prototype[pair[0]] = value;
+ } else {
+ delete func.prototype[pair[0]];
+ }
+ });
+ return func;
+ };
+ },
+ 'nthArg': function(nthArg) {
+ return function(n) {
+ var arity = n < 0 ? 1 : (toInteger(n) + 1);
+ return curry(nthArg(n), arity);
+ };
+ },
+ 'rearg': function(rearg) {
+ return function(func, indexes) {
+ var arity = indexes ? indexes.length : 0;
+ return curry(rearg(func, indexes), arity);
+ };
+ },
+ 'runInContext': function(runInContext) {
+ return function(context) {
+ return baseConvert(util, runInContext(context), options);
+ };
+ }
+ };
+
+ /*--------------------------------------------------------------------------*/
+
+ /**
+ * Casts `func` to a function with an arity capped iteratee if needed.
+ *
+ * @private
+ * @param {string} name The name of the function to inspect.
+ * @param {Function} func The function to inspect.
+ * @returns {Function} Returns the cast function.
+ */
+ function castCap(name, func) {
+ if (config.cap) {
+ var indexes = mapping.iterateeRearg[name];
+ if (indexes) {
+ return iterateeRearg(func, indexes);
+ }
+ var n = !isLib && mapping.iterateeAry[name];
+ if (n) {
+ return iterateeAry(func, n);
+ }
+ }
+ return func;
+ }
+
+ /**
+ * Casts `func` to a curried function if needed.
+ *
+ * @private
+ * @param {string} name The name of the function to inspect.
+ * @param {Function} func The function to inspect.
+ * @param {number} n The arity of `func`.
+ * @returns {Function} Returns the cast function.
+ */
+ function castCurry(name, func, n) {
+ return (forceCurry || (config.curry && n > 1))
+ ? curry(func, n)
+ : func;
+ }
+
+ /**
+ * Casts `func` to a fixed arity function if needed.
+ *
+ * @private
+ * @param {string} name The name of the function to inspect.
+ * @param {Function} func The function to inspect.
+ * @param {number} n The arity cap.
+ * @returns {Function} Returns the cast function.
+ */
+ function castFixed(name, func, n) {
+ if (config.fixed && (forceFixed || !mapping.skipFixed[name])) {
+ var data = mapping.methodSpread[name],
+ start = data && data.start;
+
+ return start === undefined ? ary(func, n) : flatSpread(func, start);
+ }
+ return func;
+ }
+
+ /**
+ * Casts `func` to an rearged function if needed.
+ *
+ * @private
+ * @param {string} name The name of the function to inspect.
+ * @param {Function} func The function to inspect.
+ * @param {number} n The arity of `func`.
+ * @returns {Function} Returns the cast function.
+ */
+ function castRearg(name, func, n) {
+ return (config.rearg && n > 1 && (forceRearg || !mapping.skipRearg[name]))
+ ? rearg(func, mapping.methodRearg[name] || mapping.aryRearg[n])
+ : func;
+ }
+
+ /**
+ * Creates a clone of `object` by `path`.
+ *
+ * @private
+ * @param {Object} object The object to clone.
+ * @param {Array|string} path The path to clone by.
+ * @returns {Object} Returns the cloned object.
+ */
+ function cloneByPath(object, path) {
+ path = toPath(path);
+
+ var index = -1,
+ length = path.length,
+ lastIndex = length - 1,
+ result = clone(Object(object)),
+ nested = result;
+
+ while (nested != null && ++index < length) {
+ var key = path[index],
+ value = nested[key];
+
+ if (value != null) {
+ nested[path[index]] = clone(index == lastIndex ? value : Object(value));
+ }
+ nested = nested[key];
+ }
+ return result;
+ }
+
+ /**
+ * Converts `lodash` to an immutable auto-curried iteratee-first data-last
+ * version with conversion `options` applied.
+ *
+ * @param {Object} [options] The options object. See `baseConvert` for more details.
+ * @returns {Function} Returns the converted `lodash`.
+ */
+ function convertLib(options) {
+ return _.runInContext.convert(options)(undefined);
+ }
+
+ /**
+ * Create a converter function for `func` of `name`.
+ *
+ * @param {string} name The name of the function to convert.
+ * @param {Function} func The function to convert.
+ * @returns {Function} Returns the new converter function.
+ */
+ function createConverter(name, func) {
+ var realName = mapping.aliasToReal[name] || name,
+ methodName = mapping.remap[realName] || realName,
+ oldOptions = options;
+
+ return function(options) {
+ var newUtil = isLib ? pristine : helpers,
+ newFunc = isLib ? pristine[methodName] : func,
+ newOptions = assign(assign({}, oldOptions), options);
+
+ return baseConvert(newUtil, realName, newFunc, newOptions);
+ };
+ }
+
+ /**
+ * Creates a function that wraps `func` to invoke its iteratee, with up to `n`
+ * arguments, ignoring any additional arguments.
+ *
+ * @private
+ * @param {Function} func The function to cap iteratee arguments for.
+ * @param {number} n The arity cap.
+ * @returns {Function} Returns the new function.
+ */
+ function iterateeAry(func, n) {
+ return overArg(func, function(func) {
+ return typeof func == 'function' ? baseAry(func, n) : func;
+ });
+ }
+
+ /**
+ * Creates a function that wraps `func` to invoke its iteratee with arguments
+ * arranged according to the specified `indexes` where the argument value at
+ * the first index is provided as the first argument, the argument value at
+ * the second index is provided as the second argument, and so on.
+ *
+ * @private
+ * @param {Function} func The function to rearrange iteratee arguments for.
+ * @param {number[]} indexes The arranged argument indexes.
+ * @returns {Function} Returns the new function.
+ */
+ function iterateeRearg(func, indexes) {
+ return overArg(func, function(func) {
+ var n = indexes.length;
+ return baseArity(rearg(baseAry(func, n), indexes), n);
+ });
+ }
+
+ /**
+ * Creates a function that invokes `func` with its first argument transformed.
+ *
+ * @private
+ * @param {Function} func The function to wrap.
+ * @param {Function} transform The argument transform.
+ * @returns {Function} Returns the new function.
+ */
+ function overArg(func, transform) {
+ return function() {
+ var length = arguments.length;
+ if (!length) {
+ return func();
+ }
+ var args = Array(length);
+ while (length--) {
+ args[length] = arguments[length];
+ }
+ var index = config.rearg ? 0 : (length - 1);
+ args[index] = transform(args[index]);
+ return func.apply(undefined, args);
+ };
+ }
+
+ /**
+ * Creates a function that wraps `func` and applys the conversions
+ * rules by `name`.
+ *
+ * @private
+ * @param {string} name The name of the function to wrap.
+ * @param {Function} func The function to wrap.
+ * @returns {Function} Returns the converted function.
+ */
+ function wrap(name, func) {
+ var result,
+ realName = mapping.aliasToReal[name] || name,
+ wrapped = func,
+ wrapper = wrappers[realName];
+
+ if (wrapper) {
+ wrapped = wrapper(func);
+ }
+ else if (config.immutable) {
+ if (mapping.mutate.array[realName]) {
+ wrapped = wrapImmutable(func, cloneArray);
+ }
+ else if (mapping.mutate.object[realName]) {
+ wrapped = wrapImmutable(func, createCloner(func));
+ }
+ else if (mapping.mutate.set[realName]) {
+ wrapped = wrapImmutable(func, cloneByPath);
+ }
+ }
+ each(aryMethodKeys, function(aryKey) {
+ each(mapping.aryMethod[aryKey], function(otherName) {
+ if (realName == otherName) {
+ var data = mapping.methodSpread[realName],
+ afterRearg = data && data.afterRearg;
+
+ result = afterRearg
+ ? castFixed(realName, castRearg(realName, wrapped, aryKey), aryKey)
+ : castRearg(realName, castFixed(realName, wrapped, aryKey), aryKey);
+
+ result = castCap(realName, result);
+ result = castCurry(realName, result, aryKey);
+ return false;
+ }
+ });
+ return !result;
+ });
+
+ result || (result = wrapped);
+ if (result == func) {
+ result = forceCurry ? curry(result, 1) : function() {
+ return func.apply(this, arguments);
+ };
+ }
+ result.convert = createConverter(realName, func);
+ if (mapping.placeholder[realName]) {
+ setPlaceholder = true;
+ result.placeholder = func.placeholder = placeholder;
+ }
+ return result;
+ }
+
+ /*--------------------------------------------------------------------------*/
+
+ if (!isObj) {
+ return wrap(name, func);
+ }
+ var _ = func;
+
+ // Convert methods by ary cap.
+ var pairs = [];
+ each(aryMethodKeys, function(aryKey) {
+ each(mapping.aryMethod[aryKey], function(key) {
+ var func = _[mapping.remap[key] || key];
+ if (func) {
+ pairs.push([key, wrap(key, func)]);
+ }
+ });
+ });
+
+ // Convert remaining methods.
+ each(keys(_), function(key) {
+ var func = _[key];
+ if (typeof func == 'function') {
+ var length = pairs.length;
+ while (length--) {
+ if (pairs[length][0] == key) {
+ return;
+ }
+ }
+ func.convert = createConverter(key, func);
+ pairs.push([key, func]);
+ }
+ });
+
+ // Assign to `_` leaving `_.prototype` unchanged to allow chaining.
+ each(pairs, function(pair) {
+ _[pair[0]] = pair[1];
+ });
+
+ _.convert = convertLib;
+ if (setPlaceholder) {
+ _.placeholder = placeholder;
+ }
+ // Assign aliases.
+ each(keys(_), function(key) {
+ each(mapping.realToAlias[key] || [], function(alias) {
+ _[alias] = _[key];
+ });
+ });
+
+ return _;
+}
+
+module.exports = baseConvert;
projects / yaffs-website / blobdiff