23 lines
754 B
TypeScript
23 lines
754 B
TypeScript
///<reference path='References.ts' />
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class CharacterInfo {
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public static isDecimalDigit(c: number): boolean {
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return c >= CharacterCodes._0 && c <= CharacterCodes._9;
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}
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public static isHexDigit(c: number): boolean {
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return isDecimalDigit(c) ||
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(c >= CharacterCodes.A && c <= CharacterCodes.F) ||
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(c >= CharacterCodes.a && c <= CharacterCodes.f);
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}
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public static hexValue(c: number): number {
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Debug.assert(isHexDigit(c));
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return isDecimalDigit(c)
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? (c - CharacterCodes._0)
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: (c >= CharacterCodes.A && c <= CharacterCodes.F)
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? c - CharacterCodes.A + 10
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: c - CharacterCodes.a + 10;
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}
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}
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