forked from toml-lang/toml
-
Notifications
You must be signed in to change notification settings - Fork 42
/
Copy pathtoml.abnf
240 lines (160 loc) · 6.8 KB
/
toml.abnf
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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
;; 该文档描述了 TOML 的语法，使用的是 ABNF 格式（定义于 RFC 5234——https://www.ietf.org/rfc/rfc5234.txt）。
;;
;; 所有有效的 TOML 文档都符合该描述，然而根据辅助性文本说明中描述的语义需要拒绝某些错误的文档。
;; 可以通过 instaparse 交互式地尝试该语法。
;; http://instaparse.mojombo.com/
;;
;; 要做到这一点，在右下角，点击 Options 并将 `:input-format` 改为 ':abnf'。
;; 然后将整个 ABNF 文档粘贴到语法输入框（在 Options 上方）。
;; 然后您可以将一份 TOML 文档小样输入或粘贴到左侧米黄色的框中。
;; Tada！
;; 总结构
toml = expression *( newline expression )
expression = ws [ comment ]
expression =/ ws keyval ws [ comment ]
expression =/ ws table ws [ comment ]
;; 空白
ws = *wschar
wschar = %x20 ; 空格
wschar =/ %x09 ; 水平制表符
;; 换行
newline = %x0A ; LF
newline =/ %x0D.0A ; CRLF
;; 注释
comment-start-symbol = %x23 ; #
non-ascii = %x80-D7FF / %xE000-10FFFF
non-eol = %x09 / %x20-7E / non-ascii
comment = comment-start-symbol *non-eol
;; 键值对
keyval = key keyval-sep val
key = simple-key / dotted-key
simple-key = quoted-key / unquoted-key
unquoted-key = 1*( ALPHA / DIGIT / %x2D / %x5F ) ; A-Z / a-z / 0-9 / - / _
quoted-key = basic-string / literal-string
dotted-key = simple-key 1*( dot-sep simple-key )
dot-sep = ws %x2E ws ; . 点
keyval-sep = ws %x3D ws ; =
val = string / boolean / array / inline-table / date-time / float / integer
;; 字符串
string = ml-basic-string / basic-string / ml-literal-string / literal-string
;; 基础字符串
basic-string = quotation-mark *basic-char quotation-mark
quotation-mark = %x22 ; "
basic-char = basic-unescaped / escaped
basic-unescaped = wschar / %x21 / %x23-5B / %x5D-7E / non-ascii
escaped = escape escape-seq-char
escape = %x5C ; \
escape-seq-char = %x22 ; " 双引号 U+0022
escape-seq-char =/ %x5C ; \ 反斜杠 U+005C
escape-seq-char =/ %x62 ; b 退格符 U+0008
escape-seq-char =/ %x66 ; f 换页符 U+000C
escape-seq-char =/ %x6E ; n 换行符 U+000A
escape-seq-char =/ %x72 ; r 回车符 U+000D
escape-seq-char =/ %x74 ; t 制表符 U+0009
escape-seq-char =/ %x75 4HEXDIG ; uXXXX U+XXXX
escape-seq-char =/ %x55 8HEXDIG ; UXXXXXXXX U+XXXXXXXX
;; 多行基础字符串
ml-basic-string = ml-basic-string-delim [ newline ] ml-basic-body
ml-basic-string-delim
ml-basic-string-delim = 3quotation-mark
ml-basic-body = *mlb-content *( mlb-quotes 1*mlb-content ) [ mlb-quotes ]
mlb-content = mlb-char / newline / mlb-escaped-nl
mlb-char = mlb-unescaped / escaped
mlb-quotes = 1*2quotation-mark
mlb-unescaped = wschar / %x21 / %x23-5B / %x5D-7E / non-ascii
mlb-escaped-nl = escape ws newline *( wschar / newline )
;; 字面量字符串
literal-string = apostrophe *literal-char apostrophe
apostrophe = %x27 ; ' 单引号
literal-char = %x09 / %x20-26 / %x28-7E / non-ascii
;; 多行字面量字符串
ml-literal-string = ml-literal-string-delim [ newline ] ml-literal-body
ml-literal-string-delim
ml-literal-string-delim = 3apostrophe
ml-literal-body = *mll-content *( mll-quotes 1*mll-content ) [ mll-quotes ]
mll-content = mll-char / newline
mll-char = %x09 / %x20-26 / %x28-7E / non-ascii
mll-quotes = 1*2apostrophe
;; 整数
integer = dec-int / hex-int / oct-int / bin-int
minus = %x2D ; -
plus = %x2B ; +
underscore = %x5F ; _
digit1-9 = %x31-39 ; 1-9
digit0-7 = %x30-37 ; 0-7
digit0-1 = %x30-31 ; 0-1
hex-prefix = %x30.78 ; 0x
oct-prefix = %x30.6F ; 0o
bin-prefix = %x30.62 ; 0b
dec-int = [ minus / plus ] unsigned-dec-int
unsigned-dec-int = DIGIT / digit1-9 1*( DIGIT / underscore DIGIT )
hex-int = hex-prefix HEXDIG *( HEXDIG / underscore HEXDIG )
oct-int = oct-prefix digit0-7 *( digit0-7 / underscore digit0-7 )
bin-int = bin-prefix digit0-1 *( digit0-1 / underscore digit0-1 )
;; 浮点数
float = float-int-part ( exp / frac [ exp ] )
float =/ special-float
float-int-part = dec-int
frac = decimal-point zero-prefixable-int
decimal-point = %x2E ; .
zero-prefixable-int = DIGIT *( DIGIT / underscore DIGIT )
exp = "e" float-exp-part
float-exp-part = [ minus / plus ] zero-prefixable-int
special-float = [ minus / plus ] ( inf / nan )
inf = %x69.6e.66 ; inf
nan = %x6e.61.6e ; nan
;; 布尔值
boolean = true / false
true = %x74.72.75.65 ; true
false = %x66.61.6C.73.65 ; false
;; 日期和时刻（按照 RFC 3339 中的定义）
date-time = offset-date-time / local-date-time / local-date / local-time
date-fullyear = 4DIGIT
date-month = 2DIGIT ; 01-12
date-mday = 2DIGIT ; 01-28，01-29，01-30，01-31 基于月/年
time-delim = "T" / %x20 ; T，t，或空格
time-hour = 2DIGIT ; 00-23
time-minute = 2DIGIT ; 00-59
time-second = 2DIGIT ; 00-58，00-59，00-60 基于闰秒规则
time-secfrac = "." 1*DIGIT
time-numoffset = ( "+" / "-" ) time-hour ":" time-minute
time-offset = "Z" / time-numoffset
partial-time = time-hour ":" time-minute ":" time-second [ time-secfrac ]
full-date = date-fullyear "-" date-month "-" date-mday
full-time = partial-time time-offset
;; 坐标日期时刻
offset-date-time = full-date time-delim full-time
;; 各地日期时刻
local-date-time = full-date time-delim partial-time
;; 各地日期
local-date = full-date
;; 各地时刻
local-time = partial-time
;; 数组
array = array-open [ array-values ] ws-comment-newline array-close
array-open = %x5B ; [
array-close = %x5D ; ]
array-values = ws-comment-newline val ws-comment-newline array-sep array-values
array-values =/ ws-comment-newline val ws-comment-newline [ array-sep ]
array-sep = %x2C ; , 逗号
ws-comment-newline = *( wschar / [ comment ] newline )
;; 表
table = std-table / array-table
;; 标准表
std-table = std-table-open key std-table-close
std-table-open = %x5B ws ; [ 左方括号
std-table-close = ws %x5D ; ] 右方括号
;; 行内表
inline-table = inline-table-open [ inline-table-keyvals ] inline-table-close
inline-table-open = %x7B ws ; {
inline-table-close = ws %x7D ; }
inline-table-sep = ws %x2C ws ; , 逗号
inline-table-keyvals = keyval [ inline-table-sep inline-table-keyvals ]
;; 数组表
array-table = array-table-open key array-table-close
array-table-open = %x5B.5B ws ; [[ 双左方括号
array-table-close = ws %x5D.5D ; ]] 双右方括号
;; ABNF 的内置术语，为清楚起见重新陈列于此
ALPHA = %x41-5A / %x61-7A ; A-Z / a-z
DIGIT = %x30-39 ; 0-9
HEXDIG = DIGIT / "A" / "B" / "C" / "D" / "E" / "F"