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
|
--[[!
LPEG grammar for LuaCATS
]]
local lpeg = vim.lpeg
local P, R, S = lpeg.P, lpeg.R, lpeg.S
local Ct, Cg = lpeg.Ct, lpeg.Cg
--- @param x vim.lpeg.Pattern
local function rep(x)
return x ^ 0
end
--- @param x vim.lpeg.Pattern
local function rep1(x)
return x ^ 1
end
--- @param x vim.lpeg.Pattern
local function opt(x)
return x ^ -1
end
local ws = rep1(S(' \t'))
local fill = opt(ws)
local any = P(1) -- (consume one character)
local letter = R('az', 'AZ') + S('_$')
local num = R('09')
local ident = letter * rep(letter + num + S '-.')
local string_single = P "'" * rep(any - P "'") * P "'"
local string_double = P('"') * rep(any - P('"')) * P('"')
local literal = (string_single + string_double + (opt(P('-')) * num) + P('false') + P('true'))
local lname = (ident + P('...')) * opt(P('?'))
--- @param x string
local function Pf(x)
return fill * P(x) * fill
end
--- @param x string
local function Sf(x)
return fill * S(x) * fill
end
--- @param x vim.lpeg.Pattern
local function paren(x)
return Pf('(') * x * fill * P(')')
end
--- @param x vim.lpeg.Pattern
local function parenOpt(x)
return paren(x) + x
end
--- @param x vim.lpeg.Pattern
local function comma1(x)
return parenOpt(x * rep(Pf(',') * x))
end
--- @param x vim.lpeg.Pattern
local function comma(x)
return opt(comma1(x))
end
--- @type table<string,vim.lpeg.Pattern>
local v = setmetatable({}, {
__index = function(_, k)
return lpeg.V(k)
end,
})
local colon = Pf(':')
local opt_exact = opt(Cg(Pf('(exact)'), 'access'))
local access = P('private') + P('protected') + P('package')
local caccess = Cg(access, 'access')
local desc_delim = Sf '#:' + ws
local desc = Cg(rep(any), 'desc')
local opt_desc = opt(desc_delim * desc)
local cname = Cg(ident, 'name')
local opt_parent = opt(colon * Cg(ident, 'parent'))
--- @class nvim.luacats.Param
--- @field kind 'param'
--- @field name string
--- @field type string
--- @field desc? string
--- @class nvim.luacats.Return
--- @field kind 'return'
--- @field [integer] { type: string, name?: string}
--- @field desc? string
--- @class nvim.luacats.Generic
--- @field kind 'generic'
--- @field name string
--- @field type? string
--- @class nvim.luacats.Class
--- @field kind 'class'
--- @field name string
--- @field parent? string
--- @field access? 'private'|'protected'|'package'
--- @class nvim.luacats.Field
--- @field kind 'field'
--- @field name string
--- @field type string
--- @field desc? string
--- @field access? 'private'|'protected'|'package'
--- @class nvim.luacats.Note
--- @field desc? string
--- @alias nvim.luacats.grammar.result
--- | nvim.luacats.Param
--- | nvim.luacats.Return
--- | nvim.luacats.Generic
--- | nvim.luacats.Class
--- | nvim.luacats.Field
--- | nvim.luacats.Note
--- @class nvim.luacats.grammar
--- @field match fun(self, input: string): nvim.luacats.grammar.result?
local function annot(nm, pat)
if type(nm) == 'string' then
nm = P(nm)
end
if pat then
return Ct(Cg(P(nm), 'kind') * fill * pat)
end
return Ct(Cg(P(nm), 'kind'))
end
local grammar = P {
rep1(P('@') * (v.ats + v.ext_ats)),
ats = annot('param', Cg(lname, 'name') * ws * v.ctype * opt_desc)
+ annot('return', comma1(Ct(v.ctype * opt(ws * cname))) * opt_desc)
+ annot('type', comma1(Ct(v.ctype)) * opt_desc)
+ annot('cast', cname * ws * opt(Sf('+-')) * v.ctype)
+ annot('generic', cname * opt(colon * v.ctype))
+ annot('class', opt_exact * opt(paren(caccess)) * fill * cname * opt_parent)
+ annot('field', opt(caccess * ws) * v.field_name * ws * v.ctype * opt_desc)
+ annot('operator', cname * opt(paren(Cg(v.ltype, 'argtype'))) * colon * v.ctype)
+ annot(access)
+ annot('deprecated')
+ annot('alias', cname * opt(ws * v.ctype))
+ annot('enum', cname)
+ annot('overload', v.ctype)
+ annot('see', opt(desc_delim) * desc)
+ annot('diagnostic', opt(desc_delim) * desc)
+ annot('meta'),
--- Custom extensions
ext_ats = (
annot('note', desc)
+ annot('since', desc)
+ annot('nodoc')
+ annot('inlinedoc')
+ annot('brief', desc)
),
field_name = Cg(lname + (v.ty_index * opt(P('?'))), 'name'),
ctype = parenOpt(Cg(v.ltype, 'type')),
ltype = parenOpt(v.ty_union),
ty_union = v.ty_opt * rep(Pf('|') * v.ty_opt),
ty = v.ty_fun + ident + v.ty_table + literal + paren(v.ty) + v.ty_generic,
ty_param = Pf('<') * comma1(v.ltype) * fill * P('>'),
ty_opt = v.ty * opt(v.ty_param) * opt(P('[]')) * opt(P('?')),
ty_index = (Pf('[') * (v.ltype + ident + rep1(num)) * fill * P(']')),
table_key = v.ty_index + lname,
table_elem = v.table_key * colon * v.ltype,
ty_table = Pf('{') * comma1(v.table_elem) * fill * P('}'),
fun_param = lname * opt(colon * v.ltype),
ty_fun = Pf('fun') * paren(comma(lname * opt(colon * v.ltype))) * opt(colon * comma1(v.ltype)),
ty_generic = P('`') * letter * P('`'),
}
return grammar --[[@as nvim.luacats.grammar]]
|
