5899940156
* Update parser whitespace for clarity Has the nice benefit of not requiring a charCode to String conversion. * Remove test262 exceptions Per https://github.com/tc39/ecma262/pull/1218#issuecomment-395340891, ECMA262 follows whatever the latest Unicode version specifies for Zs Space_Separator category. MONGOLIAN VOWEL SEPARATOR was moved to the Cf Other_Format category in Unicode 8.
54 lines
1.5 KiB
JavaScript
54 lines
1.5 KiB
JavaScript
// @flow
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import * as charCodes from "charcodes";
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// Matches a whole line break (where CRLF is considered a single
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// line break). Used to count lines.
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export const lineBreak = /\r\n?|\n|\u2028|\u2029/;
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export const lineBreakG = new RegExp(lineBreak.source, "g");
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// https://tc39.github.io/ecma262/#sec-line-terminators
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export function isNewLine(code: number): boolean {
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switch (code) {
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case charCodes.lineFeed:
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case charCodes.carriageReturn:
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case charCodes.lineSeparator:
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case charCodes.paragraphSeparator:
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return true;
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default:
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return false;
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}
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}
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// https://tc39.github.io/ecma262/#sec-white-space
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export function isWhitespace(code: number): boolean {
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switch (code) {
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case 0x0009: // CHARACTER TABULATION
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case 0x000b: // LINE TABULATION
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case 0x000c: // FORM FEED
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case charCodes.space:
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case charCodes.nonBreakingSpace:
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case charCodes.oghamSpaceMark:
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case 0x2000: // EN QUAD
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case 0x2001: // EM QUAD
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case 0x2002: // EN SPACE
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case 0x2003: // EM SPACE
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case 0x2004: // THREE-PER-EM SPACE
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case 0x2005: // FOUR-PER-EM SPACE
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case 0x2006: // SIX-PER-EM SPACE
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case 0x2007: // FIGURE SPACE
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case 0x2008: // PUNCTUATION SPACE
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case 0x2009: // THIN SPACE
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case 0x200a: // HAIR SPACE
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case 0x202f: // NARROW NO-BREAK SPACE
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case 0x205f: // MEDIUM MATHEMATICAL SPACE
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case 0x3000: // IDEOGRAPHIC SPACE
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case 0xfeff: // ZERO WIDTH NO-BREAK SPACE
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return true;
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default:
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return false;
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}
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}
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