Version 1

[yaffs-website] / node_modules / grunt-legacy-util / node_modules / lodash / _createWrapper.js

diff --git a/node_modules/grunt-legacy-util/node_modules/lodash/_createWrapper.js b/node_modules/grunt-legacy-util/node_modules/lodash/_createWrapper.js
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+var baseSetData = require('./_baseSetData'),
+    createBaseWrapper = require('./_createBaseWrapper'),
+    createCurryWrapper = require('./_createCurryWrapper'),
+    createHybridWrapper = require('./_createHybridWrapper'),
+    createPartialWrapper = require('./_createPartialWrapper'),
+    getData = require('./_getData'),
+    mergeData = require('./_mergeData'),
+    setData = require('./_setData'),
+    toInteger = require('./toInteger');
+
+/** Used to compose bitmasks for wrapper metadata. */
+var BIND_FLAG = 1,
+    BIND_KEY_FLAG = 2,
+    CURRY_FLAG = 8,
+    CURRY_RIGHT_FLAG = 16,
+    PARTIAL_FLAG = 32,
+    PARTIAL_RIGHT_FLAG = 64;
+
+/** Used as the `TypeError` message for "Functions" methods. */
+var FUNC_ERROR_TEXT = 'Expected a function';
+
+/* Built-in method references for those with the same name as other `lodash` methods. */
+var nativeMax = Math.max;
+
+/**
+ * Creates a function that either curries or invokes `func` with optional
+ * `this` binding and partially applied arguments.
+ *
+ * @private
+ * @param {Function|string} func The function or method name to wrap.
+ * @param {number} bitmask The bitmask of wrapper flags.
+ *  The bitmask may be composed of the following flags:
+ *     1 - `_.bind`
+ *     2 - `_.bindKey`
+ *     4 - `_.curry` or `_.curryRight` of a bound function
+ *     8 - `_.curry`
+ *    16 - `_.curryRight`
+ *    32 - `_.partial`
+ *    64 - `_.partialRight`
+ *   128 - `_.rearg`
+ *   256 - `_.ary`
+ * @param {*} [thisArg] The `this` binding of `func`.
+ * @param {Array} [partials] The arguments to be partially applied.
+ * @param {Array} [holders] The `partials` placeholder indexes.
+ * @param {Array} [argPos] The argument positions of the new function.
+ * @param {number} [ary] The arity cap of `func`.
+ * @param {number} [arity] The arity of `func`.
+ * @returns {Function} Returns the new wrapped function.
+ */
+function createWrapper(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
+  var isBindKey = bitmask & BIND_KEY_FLAG;
+  if (!isBindKey && typeof func != 'function') {
+    throw new TypeError(FUNC_ERROR_TEXT);
+  }
+  var length = partials ? partials.length : 0;
+  if (!length) {
+    bitmask &= ~(PARTIAL_FLAG | PARTIAL_RIGHT_FLAG);
+    partials = holders = undefined;
+  }
+  ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);
+  arity = arity === undefined ? arity : toInteger(arity);
+  length -= holders ? holders.length : 0;
+
+  if (bitmask & PARTIAL_RIGHT_FLAG) {
+    var partialsRight = partials,
+        holdersRight = holders;
+
+    partials = holders = undefined;
+  }
+  var data = isBindKey ? undefined : getData(func),
+      newData = [func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity];
+
+  if (data) {
+    mergeData(newData, data);
+  }
+  func = newData[0];
+  bitmask = newData[1];
+  thisArg = newData[2];
+  partials = newData[3];
+  holders = newData[4];
+  arity = newData[9] = newData[9] == null
+    ? (isBindKey ? 0 : func.length)
+    : nativeMax(newData[9] - length, 0);
+
+  if (!arity && bitmask & (CURRY_FLAG | CURRY_RIGHT_FLAG)) {
+    bitmask &= ~(CURRY_FLAG | CURRY_RIGHT_FLAG);
+  }
+  if (!bitmask || bitmask == BIND_FLAG) {
+    var result = createBaseWrapper(func, bitmask, thisArg);
+  } else if (bitmask == CURRY_FLAG || bitmask == CURRY_RIGHT_FLAG) {
+    result = createCurryWrapper(func, bitmask, arity);
+  } else if ((bitmask == PARTIAL_FLAG || bitmask == (BIND_FLAG | PARTIAL_FLAG)) && !holders.length) {
+    result = createPartialWrapper(func, bitmask, thisArg, partials);
+  } else {
+    result = createHybridWrapper.apply(undefined, newData);
+  }
+  var setter = data ? baseSetData : setData;
+  return setter(result, newData);
+}
+
+module.exports = createWrapper;