detect on common react patterns #130
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Nice idea! I agree though, I know I personally would appreciate this change even more if it could be disabled via an option. While 99% of users importing from |
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Right; this should be an option, and should also I think skip comments in addition to whitespace. |
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Could you add an option to enable/disable this check? |
ftdetect/javascript.vim
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| return 1 | ||
| endfu | ||
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| autocmd BufNewFile,BufRead *.jsx let b:jsx_ext_found = 1 | ||
| autocmd BufNewFile,BufRead *.jsx set filetype=javascript.jsx | ||
| autocmd BufNewFile,BufRead *.js | ||
| \ if <SID>EnableJSX() | set filetype=javascript.jsx | endif | ||
| \ if <SID>EnableJSX() | set filetype=javascript.jsx | endif |
ftdetect/javascript.vim
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| " Whether to set the JSX filetype on *.js files. | ||
| fu! <SID>EnableJSX() | ||
| if g:jsx_pragma_required && !b:jsx_pragma_found | return 0 | endif | ||
| if g:jsx_ext_required && !exists('b:jsx_ext_found') | return 0 | endif | ||
| if g:jsx_ext_required && !exists('b:jsx_ext_found') && | ||
| \ !(get(g:,'jsx_prevalent_declaration') && search(s:jsx_prevalent_pattern, 'nw')) |
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Can you make this into a separate conditional? We could smush all three checks into one, but they're unrelated and I think it's clearer to separate them (and also probably avoids a line continuation).
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that condition is a pre-req. If it was rearranged, it'd be dead code because of the return
ftdetect/javascript.vim
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| " Whether to set the JSX filetype on *.js files. | ||
| fu! <SID>EnableJSX() | ||
| if g:jsx_pragma_required && !b:jsx_pragma_found | return 0 | endif | ||
| if g:jsx_ext_required && !exists('b:jsx_ext_found') | return 0 | endif | ||
| if g:jsx_ext_required && !exists('b:jsx_ext_found') && | ||
| \ !(get(g:,'jsx_prevalent_declaration') && search(s:jsx_prevalent_pattern, 'nw')) |
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I think it's a little strange to identify the declaration as "the prevalent declaration" rather than "the react import" or "the require react expression". Rename this variable to something like g:jsx_check_react_import or something more self-documenting.
ftdetect/javascript.vim
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| " importation, we guess the user writes jsx | ||
| " endif | ||
| let s:jsx_prevalent_pattern = | ||
| \ '\v\C%^\_s*%(%(//.*\_$|/\*\_.{-1,}\*/)@>\_s*)*%(import\s+\k+\s+from\s+|%(\l+\s+)=\k+\s*\=\s*require\s*\(\s*)[`"'']react>' |
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Just to confirm—this regex skips over comments and looks for something that looks like import ... from ... 'react or require( ... 'react (modulo whitespace, choice of quote, etc.). Is that correct, or have I missed something?
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that's it. i did this with the \v flag to reduce the size. pretty fast, and accurate
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this is the first step in a sed js parser haha
| " Whether to set the JSX filetype on *.js files. | ||
| fu! <SID>EnableJSX() | ||
| if g:jsx_pragma_required && !b:jsx_pragma_found | return 0 | endif | ||
| if g:jsx_ext_required && !exists('b:jsx_ext_found') | return 0 | endif | ||
| if g:jsx_ext_required && !exists('b:jsx_ext_found') && | ||
| \ !(get(g:,'jsx_check_react_import') && search(s:jsx_prevalent_pattern, 'nw')) |
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Oh, that's right—I forgot this function was setting the filetype on .js files only, not files in general.
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Can you rebase this on master? I'm having trouble upstreaming the change. |
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what about github.com ? says it is clean and mergeable |
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should be fine now |
This uses the vim-jsx plugin to add JSX filetype support, also by setting g:jsx_ext_required to zero it enables JSX in all *.js files. It's not ideal but hopefully the plugin's ftdetect will get better at recognizing React patterns (i.e. when [1] gets merged). [1]: mxw/vim-jsx#130
maybe it should be an option though