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refactor(core): avoid object creation in bind (#21155) 

PR Close #21155
This commit is contained in:
Kara Erickson 2017-12-18 12:39:46 -08:00 committed by Miško Hevery
parent d8abf70f1f
commit 8bf1305490
1 changed files with 156 additions and 101 deletions
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257
packages/core/src/render3/instructions.ts
View File

@ -1386,14 +1386,16 @@ export function bind2(prefix: string, v0: any, i0: string, v1: any, suffix: stri
if (typeof currentView.bindingStartIndex !== 'number') {
bindingIndex = currentView.bindingStartIndex = data.length;
}
data[bindingIndex++] = {v0: v0, v1: v1};
data[bindingIndex++] = v0;
data[bindingIndex++] = v1;
} else {
const parts: {v0: any, v1: any} = data[bindingIndex++];
if (v0 === NO_CHANGE) v0 = parts.v0;
if (v1 === NO_CHANGE) v1 = parts.v1;
if (different = (isDifferent(parts.v0, v0) || isDifferent(parts.v1, v1))) {
parts.v0 = v0;
parts.v1 = v1;
const part0 = data[bindingIndex++];
const part1 = data[bindingIndex++];
if (v0 === NO_CHANGE) v0 = part0;
if (v1 === NO_CHANGE) v1 = part1;
if (different = (isDifferent(part0, v0) || isDifferent(part1, v1))) {
data[bindingIndex - 2] = v0;
data[bindingIndex - 1] = v1;
}
}
return different ? prefix + stringify(v0) + i0 + stringify(v1) + suffix : NO_CHANGE;
@ -1418,17 +1420,20 @@ export function bind3(
if (typeof currentView.bindingStartIndex !== 'number') {
bindingIndex = currentView.bindingStartIndex = data.length;
}
data[bindingIndex++] = {v0: v0, v1: v1, v2: v2};
data[bindingIndex++] = v0;
data[bindingIndex++] = v1;
data[bindingIndex++] = v2;
} else {
const parts: {v0: any, v1: any, v2: any} = data[bindingIndex++];
if (v0 === NO_CHANGE) v0 = parts.v0;
if (v1 === NO_CHANGE) v1 = parts.v1;
if (v2 === NO_CHANGE) v2 = parts.v2;
if (different =
(isDifferent(parts.v0, v0) || isDifferent(parts.v1, v1) || isDifferent(parts.v2, v2))) {
parts.v0 = v0;
parts.v1 = v1;
parts.v2 = v2;
const part0 = data[bindingIndex++];
const part1 = data[bindingIndex++];
const part2 = data[bindingIndex++];
if (v0 === NO_CHANGE) v0 = part0;
if (v1 === NO_CHANGE) v1 = part1;
if (v2 === NO_CHANGE) v2 = part2;
if (different = (isDifferent(part0, v0) || isDifferent(part1, v1) || isDifferent(part2, v2))) {
data[bindingIndex - 3] = v0;
data[bindingIndex - 2] = v1;
data[bindingIndex - 1] = v2;
}
}
return different ? prefix + stringify(v0) + i0 + stringify(v1) + i1 + stringify(v2) + suffix :
@ -1456,20 +1461,26 @@ export function bind4(
if (typeof currentView.bindingStartIndex !== 'number') {
bindingIndex = currentView.bindingStartIndex = data.length;
}
data[bindingIndex++] = {v0: v0, v1: v1, v2: v2, v3: v3};
data[bindingIndex++] = v0;
data[bindingIndex++] = v1;
data[bindingIndex++] = v2;
data[bindingIndex++] = v3;
} else {
const parts: {v0: any, v1: any, v2: any, v3: any} = data[bindingIndex++];
if (v0 === NO_CHANGE) v0 = parts.v0;
if (v1 === NO_CHANGE) v1 = parts.v1;
if (v2 === NO_CHANGE) v2 = parts.v2;
if (v3 === NO_CHANGE) v3 = parts.v3;
const part0 = data[bindingIndex++];
const part1 = data[bindingIndex++];
const part2 = data[bindingIndex++];
const part3 = data[bindingIndex++];
if (v0 === NO_CHANGE) v0 = part0;
if (v1 === NO_CHANGE) v1 = part1;
if (v2 === NO_CHANGE) v2 = part2;
if (v3 === NO_CHANGE) v3 = part3;
if (different =
(isDifferent(parts.v0, v0) || isDifferent(parts.v1, v1) || isDifferent(parts.v2, v2) ||
isDifferent(parts.v3, v3))) {
parts.v0 = v0;
parts.v1 = v1;
parts.v2 = v2;
parts.v3 = v3;
(isDifferent(part0, v0) || isDifferent(part1, v1) || isDifferent(part2, v2) ||
isDifferent(part3, v3))) {
data[bindingIndex - 4] = v0;
data[bindingIndex - 3] = v1;
data[bindingIndex - 2] = v2;
data[bindingIndex - 1] = v3;
}
}
return different ?
@ -1501,22 +1512,31 @@ export function bind5(
if (typeof currentView.bindingStartIndex !== 'number') {
bindingIndex = currentView.bindingStartIndex = data.length;
}
data[bindingIndex++] = {v0: v0, v1: v1, v2: v2, v3, v4};
data[bindingIndex++] = v0;
data[bindingIndex++] = v1;
data[bindingIndex++] = v2;
data[bindingIndex++] = v3;
data[bindingIndex++] = v4;
} else {
const parts: {v0: any, v1: any, v2: any, v3: any, v4: any} = data[bindingIndex++];
if (v0 === NO_CHANGE) v0 = parts.v0;
if (v1 === NO_CHANGE) v1 = parts.v1;
if (v2 === NO_CHANGE) v2 = parts.v2;
if (v3 === NO_CHANGE) v3 = parts.v3;
if (v4 === NO_CHANGE) v4 = parts.v4;
const part0 = data[bindingIndex++];
const part1 = data[bindingIndex++];
const part2 = data[bindingIndex++];
const part3 = data[bindingIndex++];
const part4 = data[bindingIndex++];
if (v0 === NO_CHANGE) v0 = part0;
if (v1 === NO_CHANGE) v1 = part1;
if (v2 === NO_CHANGE) v2 = part2;
if (v3 === NO_CHANGE) v3 = part3;
if (v4 === NO_CHANGE) v4 = part4;
if (different =
(isDifferent(parts.v0, v0) || isDifferent(parts.v1, v1) || isDifferent(parts.v2, v2) ||
isDifferent(parts.v3, v3) || isDifferent(parts.v4, v4))) {
parts.v0 = v0;
parts.v1 = v1;
parts.v2 = v2;
parts.v3 = v3;
parts.v4 = v4;
(isDifferent(part0, v0) || isDifferent(part1, v1) || isDifferent(part2, v2) ||
isDifferent(part3, v3) || isDifferent(part4, v4))) {
data[bindingIndex - 5] = v0;
data[bindingIndex - 4] = v1;
data[bindingIndex - 3] = v2;
data[bindingIndex - 2] = v3;
data[bindingIndex - 1] = v4;
}
}
return different ?
@ -1550,24 +1570,35 @@ export function bind6(
if (typeof currentView.bindingStartIndex !== 'number') {
bindingIndex = currentView.bindingStartIndex = data.length;
}
data[bindingIndex++] = {v0: v0, v1: v1, v2: v2, v3: v3, v4: v4, v5: v5};
data[bindingIndex++] = v0;
data[bindingIndex++] = v1;
data[bindingIndex++] = v2;
data[bindingIndex++] = v3;
data[bindingIndex++] = v4;
data[bindingIndex++] = v5;
} else {
const parts: {v0: any, v1: any, v2: any, v3: any, v4: any, v5: any} = data[bindingIndex++];
if (v0 === NO_CHANGE) v0 = parts.v0;
if (v1 === NO_CHANGE) v1 = parts.v1;
if (v2 === NO_CHANGE) v2 = parts.v2;
if (v3 === NO_CHANGE) v3 = parts.v3;
if (v4 === NO_CHANGE) v4 = parts.v4;
if (v5 === NO_CHANGE) v5 = parts.v5;
const part0 = data[bindingIndex++];
const part1 = data[bindingIndex++];
const part2 = data[bindingIndex++];
const part3 = data[bindingIndex++];
const part4 = data[bindingIndex++];
const part5 = data[bindingIndex++];
if (v0 === NO_CHANGE) v0 = part0;
if (v1 === NO_CHANGE) v1 = part1;
if (v2 === NO_CHANGE) v2 = part2;
if (v3 === NO_CHANGE) v3 = part3;
if (v4 === NO_CHANGE) v4 = part4;
if (v5 === NO_CHANGE) v5 = part5;
if (different =
(isDifferent(parts.v0, v0) || isDifferent(parts.v1, v1) || isDifferent(parts.v2, v2) ||
isDifferent(parts.v3, v3) || isDifferent(parts.v4, v4) || isDifferent(parts.v5, v5))) {
parts.v0 = v0;
parts.v1 = v1;
parts.v2 = v2;
parts.v3 = v3;
parts.v4 = v4;
parts.v5 = v5;
(isDifferent(part0, v0) || isDifferent(part1, v1) || isDifferent(part2, v2) ||
isDifferent(part3, v3) || isDifferent(part4, v4) || isDifferent(part5, v5))) {
data[bindingIndex - 6] = v0;
data[bindingIndex - 5] = v1;
data[bindingIndex - 4] = v2;
data[bindingIndex - 3] = v3;
data[bindingIndex - 2] = v4;
data[bindingIndex - 1] = v5;
}
}
return different ?
@ -1604,28 +1635,39 @@ export function bind7(
if (typeof currentView.bindingStartIndex !== 'number') {
bindingIndex = currentView.bindingStartIndex = data.length;
}
data[bindingIndex++] = {v0: v0, v1: v1, v2: v2, v3: v3, v4: v4, v5: v5, v6: v6};
data[bindingIndex++] = v0;
data[bindingIndex++] = v1;
data[bindingIndex++] = v2;
data[bindingIndex++] = v3;
data[bindingIndex++] = v4;
data[bindingIndex++] = v5;
data[bindingIndex++] = v6;
} else {
const parts: {v0: any, v1: any, v2: any, v3: any, v4: any, v5: any, v6: any} =
data[bindingIndex++];
if (v0 === NO_CHANGE) v0 = parts.v0;
if (v1 === NO_CHANGE) v1 = parts.v1;
if (v2 === NO_CHANGE) v2 = parts.v2;
if (v3 === NO_CHANGE) v3 = parts.v3;
if (v4 === NO_CHANGE) v4 = parts.v4;
if (v5 === NO_CHANGE) v5 = parts.v5;
if (v6 === NO_CHANGE) v6 = parts.v6;
const part0 = data[bindingIndex++];
const part1 = data[bindingIndex++];
const part2 = data[bindingIndex++];
const part3 = data[bindingIndex++];
const part4 = data[bindingIndex++];
const part5 = data[bindingIndex++];
const part6 = data[bindingIndex++];
if (v0 === NO_CHANGE) v0 = part0;
if (v1 === NO_CHANGE) v1 = part1;
if (v2 === NO_CHANGE) v2 = part2;
if (v3 === NO_CHANGE) v3 = part3;
if (v4 === NO_CHANGE) v4 = part4;
if (v5 === NO_CHANGE) v5 = part5;
if (v6 === NO_CHANGE) v6 = part6;
if (different =
(isDifferent(parts.v0, v0) || isDifferent(parts.v1, v1) || isDifferent(parts.v2, v2) ||
isDifferent(parts.v3, v3) || isDifferent(parts.v4, v4) || isDifferent(parts.v5, v5) ||
isDifferent(parts.v6, v6))) {
parts.v0 = v0;
parts.v1 = v1;
parts.v2 = v2;
parts.v3 = v3;
parts.v4 = v4;
parts.v5 = v5;
parts.v6 = v6;
(isDifferent(part0, v0) || isDifferent(part1, v1) || isDifferent(part2, v2) ||
isDifferent(part3, v3) || isDifferent(part4, v4) || isDifferent(part5, v5) ||
isDifferent(part6, v6))) {
data[bindingIndex - 7] = v0;
data[bindingIndex - 6] = v1;
data[bindingIndex - 5] = v2;
data[bindingIndex - 4] = v3;
data[bindingIndex - 3] = v4;
data[bindingIndex - 2] = v5;
data[bindingIndex - 1] = v6;
}
}
return different ?
@ -1664,30 +1706,43 @@ export function bind8(
if (typeof currentView.bindingStartIndex !== 'number') {
bindingIndex = currentView.bindingStartIndex = data.length;
}
data[bindingIndex++] = {v0: v0, v1: v1, v2: v2, v3: v3, v4: v4, v5: v5, v6: v6, v7: v7};
data[bindingIndex++] = v0;
data[bindingIndex++] = v1;
data[bindingIndex++] = v2;
data[bindingIndex++] = v3;
data[bindingIndex++] = v4;
data[bindingIndex++] = v5;
data[bindingIndex++] = v6;
data[bindingIndex++] = v7;
} else {
const parts: {v0: any, v1: any, v2: any, v3: any, v4: any, v5: any, v6: any, v7: any} =
data[bindingIndex++];
if (v0 === NO_CHANGE) v0 = parts.v0;
if (v1 === NO_CHANGE) v1 = parts.v1;
if (v2 === NO_CHANGE) v2 = parts.v2;
if (v3 === NO_CHANGE) v3 = parts.v3;
if (v4 === NO_CHANGE) v4 = parts.v4;
if (v5 === NO_CHANGE) v5 = parts.v5;
if (v6 === NO_CHANGE) v6 = parts.v6;
if (v7 === NO_CHANGE) v7 = parts.v7;
const part0 = data[bindingIndex++];
const part1 = data[bindingIndex++];
const part2 = data[bindingIndex++];
const part3 = data[bindingIndex++];
const part4 = data[bindingIndex++];
const part5 = data[bindingIndex++];
const part6 = data[bindingIndex++];
const part7 = data[bindingIndex++];
if (v0 === NO_CHANGE) v0 = part0;
if (v1 === NO_CHANGE) v1 = part1;
if (v2 === NO_CHANGE) v2 = part2;
if (v3 === NO_CHANGE) v3 = part3;
if (v4 === NO_CHANGE) v4 = part4;
if (v5 === NO_CHANGE) v5 = part5;
if (v6 === NO_CHANGE) v6 = part6;
if (v7 === NO_CHANGE) v7 = part7;
if (different =
(isDifferent(parts.v0, v0) || isDifferent(parts.v1, v1) || isDifferent(parts.v2, v2) ||
isDifferent(parts.v3, v3) || isDifferent(parts.v4, v4) || isDifferent(parts.v5, v5) ||
isDifferent(parts.v6, v6))) {
parts.v0 = v0;
parts.v1 = v1;
parts.v2 = v2;
parts.v3 = v3;
parts.v4 = v4;
parts.v5 = v5;
parts.v6 = v6;
parts.v7 = v7;
(isDifferent(part0, v0) || isDifferent(part1, v1) || isDifferent(part2, v2) ||
isDifferent(part3, v3) || isDifferent(part4, v4) || isDifferent(part5, v5) ||
isDifferent(part6, v6) || isDifferent(part7, v7))) {
data[bindingIndex - 8] = v0;
data[bindingIndex - 7] = v1;
data[bindingIndex - 6] = v2;
data[bindingIndex - 5] = v3;
data[bindingIndex - 4] = v4;
data[bindingIndex - 3] = v5;
data[bindingIndex - 2] = v6;
data[bindingIndex - 1] = v7;
}
}
return different ?