Marc Mintel
5397309103
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76 lines
1.3 KiB
Plaintext
76 lines
1.3 KiB
Plaintext
'use strict';
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Object.defineProperty(exports, '__esModule', {
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value: true,
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});
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exports.isDigit = isDigit;
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exports.isLetter = isLetter;
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exports.isNameContinue = isNameContinue;
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exports.isNameStart = isNameStart;
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exports.isWhiteSpace = isWhiteSpace;
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/**
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* ```
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* WhiteSpace ::
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* - "Horizontal Tab (U+0009)"
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* - "Space (U+0020)"
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* ```
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* @internal
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*/
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function isWhiteSpace(code) {
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return code === 0x0009 || code === 0x0020;
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}
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/**
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* ```
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* Digit :: one of
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* - `0` `1` `2` `3` `4` `5` `6` `7` `8` `9`
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* ```
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* @internal
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*/
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function isDigit(code) {
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return code >= 0x0030 && code <= 0x0039;
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}
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/**
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* ```
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* Letter :: one of
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* - `A` `B` `C` `D` `E` `F` `G` `H` `I` `J` `K` `L` `M`
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* - `N` `O` `P` `Q` `R` `S` `T` `U` `V` `W` `X` `Y` `Z`
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* - `a` `b` `c` `d` `e` `f` `g` `h` `i` `j` `k` `l` `m`
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* - `n` `o` `p` `q` `r` `s` `t` `u` `v` `w` `x` `y` `z`
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* ```
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* @internal
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*/
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function isLetter(code) {
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return (
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(code >= 0x0061 && code <= 0x007a) || // A-Z
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(code >= 0x0041 && code <= 0x005a) // a-z
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);
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}
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/**
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* ```
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* NameStart ::
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* - Letter
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* - `_`
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* ```
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* @internal
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*/
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function isNameStart(code) {
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return isLetter(code) || code === 0x005f;
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}
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/**
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* ```
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* NameContinue ::
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* - Letter
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* - Digit
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* - `_`
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* ```
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* @internal
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*/
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function isNameContinue(code) {
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return isLetter(code) || isDigit(code) || code === 0x005f;
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}
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