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perf(format): internalize breaklines and spaces as much as possible (#81
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| export const cachedSpaces = new Array(20).fill(0).map((_, index) => { | ||
| return ' '.repeat(index); | ||
| }); | ||
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|
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| const maxCachedValues = 200; | ||
|
|
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| export const cachedBreakLinesWithSpaces = { | ||
| ' ': { | ||
| '\n': new Array(maxCachedValues).fill(0).map((_, index) => { | ||
| return '\n' + ' '.repeat(index); | ||
| }), | ||
| '\r': new Array(maxCachedValues).fill(0).map((_, index) => { | ||
| return '\r' + ' '.repeat(index); | ||
| }), | ||
| '\r\n': new Array(maxCachedValues).fill(0).map((_, index) => { | ||
| return '\r\n' + ' '.repeat(index); | ||
| }), | ||
| }, | ||
| '\t': { | ||
| '\n': new Array(maxCachedValues).fill(0).map((_, index) => { | ||
| return '\n' + '\t'.repeat(index); | ||
| }), | ||
| '\r': new Array(maxCachedValues).fill(0).map((_, index) => { | ||
| return '\r' + '\t'.repeat(index); | ||
| }), | ||
| '\r\n': new Array(maxCachedValues).fill(0).map((_, index) => { | ||
| return '\r\n' + '\t'.repeat(index); | ||
| }), | ||
| } | ||
| }; | ||
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| export const supportedEols = ['\n', '\r', '\r\n'] as const; | ||
| export type SupportedEOL = '\n' | '\r' | '\r\n'; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| import { cachedBreakLinesWithSpaces, cachedSpaces, supportedEols } from '../impl/string-intern'; | ||
| import * as assert from 'assert'; | ||
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| suite('string intern', () => { | ||
| test('should correctly define spaces intern', () => { | ||
| for (let i = 0; i < cachedSpaces.length; i++) { | ||
| assert.strictEqual(cachedSpaces[i], ' '.repeat(i)); | ||
| } | ||
| }); | ||
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| test('should correctly define break lines with spaces intern', () => { | ||
| for (const indentType of [' ', '\t'] as const) { | ||
| for (const eol of supportedEols) { | ||
| for (let i = 0; i < cachedBreakLinesWithSpaces[indentType][eol].length; i++) { | ||
| assert.strictEqual(cachedBreakLinesWithSpaces[indentType][eol][i], eol + indentType.repeat(i)); | ||
| } | ||
| } | ||
| } | ||
| }); | ||
| }); |