Version 1

[yaffs-website] / node_modules / grunt-legacy-log / node_modules / lodash / internal / createHybridWrapper.js

diff --git a/node_modules/grunt-legacy-log/node_modules/lodash/internal/createHybridWrapper.js b/node_modules/grunt-legacy-log/node_modules/lodash/internal/createHybridWrapper.js
new file mode 100644 (file)
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+var arrayCopy = require('./arrayCopy'),
+    composeArgs = require('./composeArgs'),
+    composeArgsRight = require('./composeArgsRight'),
+    createCtorWrapper = require('./createCtorWrapper'),
+    isLaziable = require('./isLaziable'),
+    reorder = require('./reorder'),
+    replaceHolders = require('./replaceHolders'),
+    setData = require('./setData');
+
+/** Used to compose bitmasks for wrapper metadata. */
+var BIND_FLAG = 1,
+    BIND_KEY_FLAG = 2,
+    CURRY_BOUND_FLAG = 4,
+    CURRY_FLAG = 8,
+    CURRY_RIGHT_FLAG = 16,
+    PARTIAL_FLAG = 32,
+    PARTIAL_RIGHT_FLAG = 64,
+    ARY_FLAG = 128;
+
+/* Native method references for those with the same name as other `lodash` methods. */
+var nativeMax = Math.max;
+
+/**
+ * Creates a function that wraps `func` and invokes it with optional `this`
+ * binding of, partial application, and currying.
+ *
+ * @private
+ * @param {Function|string} func The function or method name to reference.
+ * @param {number} bitmask The bitmask of flags. See `createWrapper` for more details.
+ * @param {*} [thisArg] The `this` binding of `func`.
+ * @param {Array} [partials] The arguments to prepend to those provided to the new function.
+ * @param {Array} [holders] The `partials` placeholder indexes.
+ * @param {Array} [partialsRight] The arguments to append to those provided to the new function.
+ * @param {Array} [holdersRight] The `partialsRight` 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 createHybridWrapper(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {
+  var isAry = bitmask & ARY_FLAG,
+      isBind = bitmask & BIND_FLAG,
+      isBindKey = bitmask & BIND_KEY_FLAG,
+      isCurry = bitmask & CURRY_FLAG,
+      isCurryBound = bitmask & CURRY_BOUND_FLAG,
+      isCurryRight = bitmask & CURRY_RIGHT_FLAG,
+      Ctor = isBindKey ? undefined : createCtorWrapper(func);
+
+  function wrapper() {
+    // Avoid `arguments` object use disqualifying optimizations by
+    // converting it to an array before providing it to other functions.
+    var length = arguments.length,
+        index = length,
+        args = Array(length);
+
+    while (index--) {
+      args[index] = arguments[index];
+    }
+    if (partials) {
+      args = composeArgs(args, partials, holders);
+    }
+    if (partialsRight) {
+      args = composeArgsRight(args, partialsRight, holdersRight);
+    }
+    if (isCurry || isCurryRight) {
+      var placeholder = wrapper.placeholder,
+          argsHolders = replaceHolders(args, placeholder);
+
+      length -= argsHolders.length;
+      if (length < arity) {
+        var newArgPos = argPos ? arrayCopy(argPos) : undefined,
+            newArity = nativeMax(arity - length, 0),
+            newsHolders = isCurry ? argsHolders : undefined,
+            newHoldersRight = isCurry ? undefined : argsHolders,
+            newPartials = isCurry ? args : undefined,
+            newPartialsRight = isCurry ? undefined : args;
+
+        bitmask |= (isCurry ? PARTIAL_FLAG : PARTIAL_RIGHT_FLAG);
+        bitmask &= ~(isCurry ? PARTIAL_RIGHT_FLAG : PARTIAL_FLAG);
+
+        if (!isCurryBound) {
+          bitmask &= ~(BIND_FLAG | BIND_KEY_FLAG);
+        }
+        var newData = [func, bitmask, thisArg, newPartials, newsHolders, newPartialsRight, newHoldersRight, newArgPos, ary, newArity],
+            result = createHybridWrapper.apply(undefined, newData);
+
+        if (isLaziable(func)) {
+          setData(result, newData);
+        }
+        result.placeholder = placeholder;
+        return result;
+      }
+    }
+    var thisBinding = isBind ? thisArg : this,
+        fn = isBindKey ? thisBinding[func] : func;
+
+    if (argPos) {
+      args = reorder(args, argPos);
+    }
+    if (isAry && ary < args.length) {
+      args.length = ary;
+    }
+    if (this && this !== global && this instanceof wrapper) {
+      fn = Ctor || createCtorWrapper(func);
+    }
+    return fn.apply(thisBinding, args);
+  }
+  return wrapper;
+}
+
+module.exports = createHybridWrapper;