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Cleanup createWrapper and mergeData.

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John-David Dalton
2014-11-23 15:35:49 -08:00
parent a094768469
commit 3c62914304
1 changed files with 42 additions and 58 deletions
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100
lodash.js
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@@ -3049,40 +3049,26 @@
bitmask &= ~(PARTIAL_FLAG | PARTIAL_RIGHT_FLAG);
partials = holders = null;
}
if (partials && !holders) {
holders = [];
}
var oldPartials = partials,
oldHolders = holders,
isPartial = bitmask & PARTIAL_FLAG,
isPartialRight = bitmask & PARTIAL_RIGHT_FLAG;
holders = (partials && !holders) ? [] : holders;
length -= (holders ? holders.length : 0);
if (!isPartial) {
if (bitmask & PARTIAL_RIGHT_FLAG) {
var partialsRight = partials,
holdersRight = holders;
partials = holders = null;
}
var data = (data = !isBindKey && getData(func)) && data !== true && data,
funcBitmask = data ? data[1] : 0,
funcIsPartialed = funcBitmask & PARTIAL_FLAG || funcBitmask & PARTIAL_RIGHT_FLAG,
var data = !isBindKey && getData(func),
newData = [func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, arity];
if (data && !(argPos && funcIsPartialed)) {
if (data && data !== true && !(argPos && (data[3] || data[5]))) {
newData = mergeData(newData, data);
}
bitmask = newData[1];
arity = newData[8];
newData[8] = newData[8] == null
? (isBindKey ? 0 : newData[0].length)
: nativeMax(newData[8] - length, 0) || 0;
if (arity == null) {
arity = isBindKey ? 0 : newData[0].length;
} else {
arity = nativeMax(+arity || 0, 0);
}
if (oldPartials) {
arity = nativeMax(arity - (oldPartials.length - oldHolders.length), 0);
}
newData[8] = arity;
bitmask = newData[1];
if (bitmask == BIND_FLAG) {
var result = createBindWrapper(newData[0], newData[2]);
} else if ((bitmask == PARTIAL_FLAG || bitmask == (BIND_FLAG | PARTIAL_FLAG)) && !newData[4].length) {
@@ -3315,55 +3301,53 @@
return value === value && (value === 0 ? ((1 / value) > 0) : !isObject(value));
}
function mergeData(data, otherData) {
/**
* Merges the function metadata of `source` into `data`.
*
* @private
* @param {Array} data The destination metadata.
* @param {Array} source The source metadata.
* @returns {Array} Returns `data`.
*/
function mergeData(data, source) {
var bitmask = data[1],
oldBitmask = bitmask,
funcBitmask = otherData[1],
funcIsBind = funcBitmask & BIND_FLAG,
isBind = bitmask & BIND_FLAG;
// Use metadata `func` and merge bitmasks.
data[0] = otherData[0];
bitmask |= funcBitmask;
funcBitmask = source[1];
// Use metadata `thisArg` if available.
if (funcIsBind) {
data[2] = otherData[2];
if (funcBitmask & BIND_FLAG) {
data[2] = source[2];
// Set when currying a bound function.
bitmask |= (bitmask & BIND_FLAG) ? 0 : CURRY_BOUND_FLAG;
}
// Set when currying a bound function.
if (!isBind && funcIsBind) {
bitmask |= CURRY_BOUND_FLAG;
// Compose partial arguments.
var value = source[3];
if (value) {
var partials = data[3];
data[3] = partials ? composeArgs(partials, value, source[4]) : baseSlice(value);
data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : baseSlice(source[4]);
}
// Compose partial and partial right arguments.
var index = 3;
while (index < 6) {
var value = otherData[index];
if (value) {
var partials = data[index],
funcHolders = otherData[index + 1],
isPartial = oldBitmask & (index < 5 ? PARTIAL_FLAG : PARTIAL_RIGHT_FLAG);
data[index++] = isPartial ? (index < 5 ? composeArgs : composeArgsRight)(partials, value, funcHolders) : baseSlice(value);
data[index++] = isPartial ? replaceHolders(data[index - 2], PLACEHOLDER) : baseSlice(funcHolders);
} else {
index += 2;
}
// Compose partial right arguments.
value = source[5];
if (value) {
partials = data[5];
data[5] = partials ? composeArgsRight(partials, value, source[6]) : baseSlice(value);
data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : baseSlice(source[6]);
}
// Append argument positions.
value = otherData[7];
value = source[7];
if (value) {
var argPos = data[7];
value = baseSlice(value);
if (argPos) {
push.apply(value, argPos);
}
push.apply(value, data[7]);
data[7] = value;
}
// Use metadata `arity` if one is not provided.
if (data[8] == null) {
data[8] = otherData[8];
data[8] = source[8];
}
data[1] = bitmask;
// Use metadata `func` and merge bitmasks.
data[0] = source[0];
data[1] = bitmask | funcBitmask;
return data;
}