82f2b76e25
We now use webpack instead of SystemJS, effectively bundling modules into one file (plus commons chunks) for every entry point. This results in a much smaller extension size (almost half). Furthermore we use yarn/npm even for extension run-time dependencies. This relieves us from manually vendoring and building dependencies. It's also easier to understand for new developers familiar with node.
107 lines
3.6 KiB
JavaScript
107 lines
3.6 KiB
JavaScript
var baseSetData = require('./_baseSetData'),
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createBind = require('./_createBind'),
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createCurry = require('./_createCurry'),
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createHybrid = require('./_createHybrid'),
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createPartial = require('./_createPartial'),
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getData = require('./_getData'),
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mergeData = require('./_mergeData'),
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setData = require('./_setData'),
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setWrapToString = require('./_setWrapToString'),
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toInteger = require('./toInteger');
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/** Error message constants. */
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var FUNC_ERROR_TEXT = 'Expected a function';
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/** Used to compose bitmasks for function metadata. */
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var WRAP_BIND_FLAG = 1,
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WRAP_BIND_KEY_FLAG = 2,
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WRAP_CURRY_FLAG = 8,
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WRAP_CURRY_RIGHT_FLAG = 16,
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WRAP_PARTIAL_FLAG = 32,
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WRAP_PARTIAL_RIGHT_FLAG = 64;
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/* Built-in method references for those with the same name as other `lodash` methods. */
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var nativeMax = Math.max;
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/**
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* Creates a function that either curries or invokes `func` with optional
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* `this` binding and partially applied arguments.
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*
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* @private
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* @param {Function|string} func The function or method name to wrap.
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* @param {number} bitmask The bitmask flags.
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* 1 - `_.bind`
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* 2 - `_.bindKey`
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* 4 - `_.curry` or `_.curryRight` of a bound function
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* 8 - `_.curry`
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* 16 - `_.curryRight`
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* 32 - `_.partial`
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* 64 - `_.partialRight`
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* 128 - `_.rearg`
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* 256 - `_.ary`
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* 512 - `_.flip`
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* @param {*} [thisArg] The `this` binding of `func`.
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* @param {Array} [partials] The arguments to be partially applied.
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* @param {Array} [holders] The `partials` placeholder indexes.
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* @param {Array} [argPos] The argument positions of the new function.
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* @param {number} [ary] The arity cap of `func`.
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* @param {number} [arity] The arity of `func`.
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* @returns {Function} Returns the new wrapped function.
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*/
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function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
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var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;
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if (!isBindKey && typeof func != 'function') {
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throw new TypeError(FUNC_ERROR_TEXT);
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}
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var length = partials ? partials.length : 0;
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if (!length) {
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bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);
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partials = holders = undefined;
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}
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ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);
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arity = arity === undefined ? arity : toInteger(arity);
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length -= holders ? holders.length : 0;
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if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {
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var partialsRight = partials,
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holdersRight = holders;
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partials = holders = undefined;
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}
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var data = isBindKey ? undefined : getData(func);
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var newData = [
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func, bitmask, thisArg, partials, holders, partialsRight, holdersRight,
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argPos, ary, arity
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];
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if (data) {
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mergeData(newData, data);
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}
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func = newData[0];
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bitmask = newData[1];
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thisArg = newData[2];
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partials = newData[3];
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holders = newData[4];
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arity = newData[9] = newData[9] === undefined
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? (isBindKey ? 0 : func.length)
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: nativeMax(newData[9] - length, 0);
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if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {
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bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);
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}
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if (!bitmask || bitmask == WRAP_BIND_FLAG) {
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var result = createBind(func, bitmask, thisArg);
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} else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {
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result = createCurry(func, bitmask, arity);
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} else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {
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result = createPartial(func, bitmask, thisArg, partials);
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} else {
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result = createHybrid.apply(undefined, newData);
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}
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var setter = data ? baseSetData : setData;
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return setWrapToString(setter(result, newData), func, bitmask);
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}
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module.exports = createWrap;
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