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92 lines
2.4 KiB
VimL
92 lines
2.4 KiB
VimL
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
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" Vim indent file
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"
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" Language: JSX (JavaScript)
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" Maintainer: Max Wang <mxawng@gmail.com>
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" Depends: pangloss/vim-javascript
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"
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"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
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" Prologue; load in XML indentation.
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if exists('b:did_indent')
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let s:did_indent=b:did_indent
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unlet b:did_indent
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endif
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exe 'runtime! indent/xml.vim'
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if exists('s:did_indent')
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let b:did_indent=s:did_indent
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endif
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setlocal indentexpr=GetJsxIndent()
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" JS indentkeys
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setlocal indentkeys=0{,0},0),0],0\,,!^F,o,O,e
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" XML indentkeys
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setlocal indentkeys+=*<Return>,<>>,<<>,/
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" Multiline end tag regex (line beginning with '>' or '/>')
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let s:endtag = '^\s*\/\?>\s*;\='
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" Get all syntax types at the beginning of a given line.
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fu! SynSOL(lnum)
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return map(synstack(a:lnum, 1), 'synIDattr(v:val, "name")')
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endfu
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" Get all syntax types at the end of a given line.
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fu! SynEOL(lnum)
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let lnum = prevnonblank(a:lnum)
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let col = strlen(getline(lnum))
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return map(synstack(lnum, col), 'synIDattr(v:val, "name")')
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endfu
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" Check if a syntax attribute is XMLish.
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fu! SynAttrXMLish(synattr)
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return a:synattr =~ "^xml" || a:synattr =~ "^jsx"
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endfu
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" Check if a synstack is XMLish (i.e., has an XMLish last attribute).
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fu! SynXMLish(syns)
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return SynAttrXMLish(get(a:syns, -1))
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endfu
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" Check if a synstack has any XMLish attribute.
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fu! SynXMLishAny(syns)
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for synattr in a:syns
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if SynAttrXMLish(synattr)
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return 1
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endif
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endfor
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return 0
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endfu
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" Check if a synstack denotes the end of a JSX block.
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fu! SynJSXBlockEnd(syns)
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return get(a:syns, -1) == 'jsBraces' && SynAttrXMLish(get(a:syns, -2))
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endfu
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" Cleverly mix JS and XML indentation.
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fu! GetJsxIndent()
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let cursyn = SynSOL(v:lnum)
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let prevsyn = SynEOL(v:lnum - 1)
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" Use XML indenting if the syntax at the end of the previous line was either
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" JSX or was the closing brace of a jsBlock whose parent syntax was JSX.
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if (SynXMLish(prevsyn) || SynJSXBlockEnd(prevsyn)) && SynXMLishAny(cursyn)
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let ind = XmlIndentGet(v:lnum, 0)
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" Align '/>' and '>' with '<' for multiline tags.
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if getline(v:lnum) =~? s:endtag
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let ind = ind - &sw
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endif
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" Then correct the indentation of any JSX following '/>' or '>'.
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if getline(v:lnum - 1) =~? s:endtag
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let ind = ind + &sw
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endif
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else
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let ind = GetJavascriptIndent()
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endif
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return ind
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endfu
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