/
const.js
132 lines (119 loc) · 3.88 KB
/
const.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
// token types (note: value shouldn't intersect with using char codes)
var WHITESPACE = 1;
var IDENTIFIER = 2;
var NUMBER = 3;
var STRING = 4;
var COMMENT = 5;
var PUNCTUATOR = 6;
var TAB = 9;
var N = 10;
var F = 12;
var R = 13;
var SPACE = 32;
var TokenType = {
Whitespace: WHITESPACE,
Identifier: IDENTIFIER,
Number: NUMBER,
String: STRING,
Comment: COMMENT,
Punctuator: PUNCTUATOR,
ExclamationMark: 33, // !
QuotationMark: 34, // "
NumberSign: 35, // #
DollarSign: 36, // $
PercentSign: 37, // %
Ampersand: 38, // &
Apostrophe: 39, // '
LeftParenthesis: 40, // (
RightParenthesis: 41, // )
Asterisk: 42, // *
PlusSign: 43, // +
Comma: 44, // ,
HyphenMinus: 45, // -
FullStop: 46, // .
Solidus: 47, // /
Colon: 58, // :
Semicolon: 59, // ;
LessThanSign: 60, // <
EqualsSign: 61, // =
GreaterThanSign: 62, // >
QuestionMark: 63, // ?
CommercialAt: 64, // @
LeftSquareBracket: 91, // [
RightSquareBracket: 93, // ]
CircumflexAccent: 94, // ^
LowLine: 95, // _
LeftCurlyBracket: 123, // {
VerticalLine: 124, // |
RightCurlyBracket: 125, // }
Tilde: 126 // ~
};
var TokenName = Object.keys(TokenType).reduce(function(result, key) {
result[TokenType[key]] = key;
return result;
}, {});
var punctuation = [
TokenType.ExclamationMark, // '!'
TokenType.QuotationMark, // '"'
TokenType.NumberSign, // '#'
TokenType.DollarSign, // '$'
TokenType.PercentSign, // '%'
TokenType.Ampersand, // '&'
TokenType.Apostrophe, // '\''
TokenType.LeftParenthesis, // '('
TokenType.RightParenthesis, // ')'
TokenType.Asterisk, // '*'
TokenType.PlusSign, // '+'
TokenType.Comma, // ','
TokenType.HyphenMinus, // '-'
TokenType.FullStop, // '.'
TokenType.Solidus, // '/'
TokenType.Colon, // ':'
TokenType.Semicolon, // ';'
TokenType.LessThanSign, // '<'
TokenType.EqualsSign, // '='
TokenType.GreaterThanSign, // '>'
TokenType.QuestionMark, // '?'
TokenType.CommercialAt, // '@'
TokenType.LeftSquareBracket, // '['
TokenType.RightSquareBracket, // ']'
TokenType.CircumflexAccent, // '^'
TokenType.LeftCurlyBracket, // '{'
TokenType.VerticalLine, // '|'
TokenType.RightCurlyBracket, // '}'
TokenType.Tilde // '~'
];
var SYMBOL_CATEGORY_LENGTH = Math.max.apply(null, punctuation) + 1;
var SYMBOL_CATEGORY = new Uint32Array(SYMBOL_CATEGORY_LENGTH);
var IS_PUNCTUATOR = new Uint32Array(SYMBOL_CATEGORY_LENGTH);
for (var i = 0; i < SYMBOL_CATEGORY.length; i++) {
SYMBOL_CATEGORY[i] = IDENTIFIER;
}
// fill categories
punctuation.forEach(function(key) {
SYMBOL_CATEGORY[Number(key)] = PUNCTUATOR;
IS_PUNCTUATOR[Number(key)] = PUNCTUATOR;
}, SYMBOL_CATEGORY);
IS_PUNCTUATOR[TokenType.HyphenMinus] = 0;
// whitespace is punctuator
IS_PUNCTUATOR[SPACE] = PUNCTUATOR;
IS_PUNCTUATOR[TAB] = PUNCTUATOR;
IS_PUNCTUATOR[N] = PUNCTUATOR;
IS_PUNCTUATOR[R] = PUNCTUATOR;
IS_PUNCTUATOR[F] = PUNCTUATOR;
for (var i = 48; i <= 57; i++) {
SYMBOL_CATEGORY[i] = NUMBER;
}
SYMBOL_CATEGORY[SPACE] = WHITESPACE;
SYMBOL_CATEGORY[TAB] = WHITESPACE;
SYMBOL_CATEGORY[N] = WHITESPACE;
SYMBOL_CATEGORY[R] = WHITESPACE;
SYMBOL_CATEGORY[F] = WHITESPACE;
SYMBOL_CATEGORY[TokenType.Apostrophe] = STRING;
SYMBOL_CATEGORY[TokenType.QuotationMark] = STRING;
module.exports = {
TokenType: TokenType,
TokenName: TokenName,
SYMBOL_CATEGORY: SYMBOL_CATEGORY,
IS_PUNCTUATOR: IS_PUNCTUATOR
};