if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'jsx') == -1
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Vim indent file
"
" Language: JSX (JavaScript)
" Maintainer: Max Wang <mxawng@gmail.com>
" Depends: pangloss/vim-javascript
"
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Do nothing if we don't find the @jsx pragma (and we care).
exec 'source '.fnameescape(expand('<sfile>:p:h:h').'/jsx-config.vim')
if g:jsx_pragma_required && !b:jsx_pragma_found | finish | endif
" Do nothing if we don't have the .jsx extension (and we care).
if g:jsx_ext_required && !exists('b:jsx_ext_found') | finish | endif
" Prologue; load in XML indentation.
if exists('b:did_indent')
let s:did_indent=b:did_indent
unlet b:did_indent
endif
exe 'runtime! indent/xml.vim'
if exists('s:did_indent')
let b:did_indent=s:did_indent
endif
setlocal indentexpr=GetJsxIndent()
" JS indentkeys
setlocal indentkeys=0{,0},0),0],0\,,!^F,o,O,e
" XML indentkeys
setlocal indentkeys+=*<Return>,<>>,<<>,/
" Self-closing tag regex.
let s:sctag = '^\s*\/>\s*;\='
" Get all syntax types at the beginning of a given line.
fu! SynSOL(lnum)
return map(synstack(a:lnum, 1), 'synIDattr(v:val, "name")')
endfu
" Get all syntax types at the end of a given line.
fu! SynEOL(lnum)
let lnum = prevnonblank(a:lnum)
let col = strlen(getline(lnum))
return map(synstack(lnum, col), 'synIDattr(v:val, "name")')
endfu
" Check if a syntax attribute is XMLish.
fu! SynAttrXMLish(synattr)
return a:synattr =~ "^xml" || a:synattr =~ "^jsx"
endfu
" Check if a synstack is XMLish (i.e., has an XMLish last attribute).
fu! SynXMLish(syns)
return SynAttrXMLish(get(a:syns, -1))
endfu
" Check if a synstack has any XMLish attribute.
fu! SynXMLishAny(syns)
for synattr in a:syns
if SynAttrXMLish(synattr)
return 1
endif
endfor
return 0
endfu
" Check if a synstack denotes the end of a JSX block.
fu! SynJSXBlockEnd(syns)
return get(a:syns, -1) == 'jsBraces' && SynAttrXMLish(get(a:syns, -2))
endfu
" Cleverly mix JS and XML indentation.
fu! GetJsxIndent()
let cursyn = SynSOL(v:lnum)
let prevsyn = SynEOL(v:lnum - 1)
" Use XML indenting if the syntax at the end of the previous line was either
" JSX or was the closing brace of a jsBlock whose parent syntax was JSX.
if (SynXMLish(prevsyn) || SynJSXBlockEnd(prevsyn)) && SynXMLishAny(cursyn)
let ind = XmlIndentGet(v:lnum, 0)
" Align '/>' with '<' for multiline self-closing tags.
if getline(v:lnum) =~? s:sctag
let ind = ind - &sw
endif
" Then correct the indentation of any JSX following '/>'.
if getline(v:lnum - 1) =~? s:sctag
let ind = ind + &sw
endif
else
let ind = GetJavascriptIndent()
endif
return ind
endfu
endif
