if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'crystal') == -1
let s:save_cpo = &cpo
set cpo&vim
function! s:_true() abort
return 1
endfunction
function! s:_false() abort
return 0
endfunction
function! s:_null() abort
return 0
endfunction
let s:const = {}
let s:const.true = function('s:_true')
let s:const.false = function('s:_false')
let s:const.null = function('s:_null')
function! s:_resolve(val, prefix) abort
let t = type(a:val)
if t == type('')
let m = matchlist(a:val, '^' . a:prefix . '\(null\|true\|false\)$')
if !empty(m)
return s:const[m[1]]
endif
elseif t == type([]) || t == type({})
return map(a:val, 's:_resolve(v:val, a:prefix)')
endif
return a:val
endfunction
function! s:_vital_created(module) abort
" define constant variables
call extend(a:module, s:const)
endfunction
function! s:_vital_loaded(V) abort
let s:V = a:V
let s:string = s:V.import('Data.String')
endfunction
function! s:_vital_depends() abort
return ['Data.String']
endfunction
" @vimlint(EVL102, 1, l:null)
" @vimlint(EVL102, 1, l:true)
" @vimlint(EVL102, 1, l:false)
function! s:decode(json, ...) abort
let settings = extend({
\ 'use_token': 0,
\}, get(a:000, 0, {}))
let json = iconv(a:json, "utf-8", &encoding)
let json = join(split(json, "\n"), '')
let json = substitute(json, '\\u34;', '\\"', 'g')
let json = substitute(json, '\\u\(\x\x\x\x\)', '\=s:string.nr2enc_char("0x".submatch(1))', 'g')
if settings.use_token
let prefix = '__Web.JSON__'
while stridx(json, prefix) != -1
let prefix .= '_'
endwhile
let [null,true,false] = map(['null','true','false'], 'prefix . v:val')
sandbox return s:_resolve(eval(json), prefix)
else
let [null,true,false] = [s:const.null(),s:const.true(),s:const.false()]
sandbox return eval(json)
endif
endfunction
" @vimlint(EVL102, 0, l:null)
" @vimlint(EVL102, 0, l:true)
" @vimlint(EVL102, 0, l:false)
function! s:encode(val) abort
if type(a:val) == 0
return a:val
elseif type(a:val) == 1
let json = '"' . escape(a:val, '\"') . '"'
let json = substitute(json, "\r", '\\r', 'g')
let json = substitute(json, "\n", '\\n', 'g')
let json = substitute(json, "\t", '\\t', 'g')
return iconv(json, &encoding, "utf-8")
elseif type(a:val) == 2
if s:const.true == a:val
return 'true'
elseif s:const.false == a:val
return 'false'
elseif s:const.null == a:val
return 'null'
else
" backward compatibility
return string(a:val)
endif
elseif type(a:val) == 3
return '[' . join(map(copy(a:val), 's:encode(v:val)'), ',') . ']'
elseif type(a:val) == 4
return '{' . join(map(keys(a:val), 's:encode(v:val).":".s:encode(a:val[v:val])'), ',') . '}'
else
return string(a:val)
endif
endfunction
let &cpo = s:save_cpo
unlet s:save_cpo
" vim:set et ts=2 sts=2 sw=2 tw=0:
endif
