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#144 - Implement commands for moving through warnings/errors

This commit is contained in:
w0rp 2016-10-24 22:09:41 +01:00
parent 1bcee7ef33
commit c8821fc049
4 changed files with 156 additions and 6 deletions
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17
README.md
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@ -30,6 +30,7 @@ In other words, this plugin allows you to lint while you type.
4. [How can I show errors or warnings in my statusline?](#faq-statusline)
5. [How can I change the format for echo messages?](#faq-echo-format)
6. [How can I execute some code when ALE stops linting?](#faq-autocmd)
7. [How can I navigate between errors quickly?](#faq-navigation)
<a name="supported-languages"></a>
@ -290,3 +291,19 @@ augroup YourGroup
autocmd User ALELint call YourFunction()
augroup END
```
<a name="faq-navigation"></a>
### 4.vii. How can I navigate between errors quickly?
ALE offers some commands with `<Plug>` keybinds for moving between warnings and
errors quickly. You can map the keys Ctrl+j and Ctrl+k to moving between errors
for example:
```vim
nmap <silent> <C-k> <Plug>(ale_previous_wrap)
nmap <silent> <C-j> <Plug>(ale_next_wrap)
```
For more information, consult the online documentation with
`:help ale-navigation-commands`.

88
autoload/ale/loclist_jumping.vim Normal file
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@ -0,0 +1,88 @@
" Author: w0rp <devw0rp@gmail.com>
" Description: This file implements functions for jumping around in a file
" based on errors and warnings in the loclist.
function! s:GetSortedLoclist() abort
let l:loclist = []
for l:item in getloclist(winnr())
if l:item.lnum < 1
" Remove items we can't even jump to.
continue
endif
call add(l:loclist, l:item)
endfor
" We must sort the list again, as the loclist could contain items set
" by other plugins.
call sort(l:loclist, 'ale#util#LocItemCompare')
return l:loclist
endfunction
" Search for the nearest line either before or after the current position
" in the loclist. The argument 'wrap' can be passed to enable wrapping
" around the end of the list.
"
" If there are no items or we have hit the end with wrapping off, an empty
" List will be returned, otherwise a pair of [line_number, column_number] will
" be returned.
function! ale#loclist_jumping#FindNearest(direction, wrap) abort
let l:loclist = s:GetSortedLoclist()
if empty(l:loclist)
" We couldn't find anything, so stop here.
return []
endif
let l:search_item = {'lnum': getcurpos()[1], 'col': getcurpos()[2]}
" When searching backwards, so we can find the next smallest match.
if a:direction ==# 'before'
call reverse(l:loclist)
endif
" Look for items before or after the current position.
for l:item in l:loclist
" Compare the cursor with a item where the column number is bounded,
" such that it's possible for the cursor to actually be on the given
" column number, without modifying the cursor number we return. This
" will allow us to move through matches, but still let us move the
" cursor to a line without changing the column, in some cases.
let l:cmp_value = ale#util#LocItemCompare(
\ {
\ 'lnum': l:item.lnum,
\ 'col': min([max([l:item.col, 1]), len(getline(l:item.lnum))]),
\ },
\ l:search_item
\)
if a:direction ==# 'before' && l:cmp_value < 0
return [l:item.lnum, l:item.col]
endif
if a:direction ==# 'after' && l:cmp_value > 0
return [l:item.lnum, l:item.col]
endif
endfor
" If we found nothing, and the wrap option is set to 1, then we should
" wrap around the list of warnings/errors
if a:wrap
let l:item = get(l:loclist, 0)
return [l:item.lnum, l:item.col]
endif
return []
endfunction
" As before, find the nearest match, but position the cursor at it.
function! ale#loclist_jumping#Jump(direction, wrap) abort
let l:nearest = ale#loclist_jumping#FindNearest(a:direction, a:wrap)
if !empty(l:nearest)
call cursor(l:nearest)
endif
endfunction

45
doc/ale.txt
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@ -23,9 +23,10 @@ CONTENTS *ale-contents*
4.11. luacheck..............................|ale-linter-options-luacheck|
4.12. c-cppcheck............................|ale-linter-options-c-cppcheck|
4.13. cpp-cppcheck..........................|ale-linter-options-cpp-cppcheck|
5. API........................................|ale-api|
6. Special Thanks.............................|ale-special-thanks|
7. Contact....................................|ale-contact|
5. Commands/Keybinds..........................|ale-commands|
6. API........................................|ale-api|
7. Special Thanks.............................|ale-special-thanks|
8. Contact....................................|ale-contact|
===============================================================================
1. Introduction *ale-introduction*
@ -549,7 +550,39 @@ g:ale_cpp_cppcheck_options *g:ale_cpp_cppcheck_options
===============================================================================
5. API *ale-api*
5. Commands/Keybinds *ale-commands*
ALEPrevious *ALEPrevious*
ALEPreviousWrap *ALEPreviousWrap*
ALENext *ALENext*
ALENextWrap *ALENextWrap*
*ale-navigation-commands*
Move between warnings or errors in a buffer.
`ALEPrevious` and `ALENext` will stop at the top and bottom of a file, while
`ALEPreviousWrap` and `ALENextWrap` will wrap around the file to find
the last or first warning or error in the file, respectively.
The following |<Plug>| mappings are defined for the commands: >
<Plug>(ale_previous) - ALEPrevious
<Plug>(ale_previous_wrap) - ALEPreviousWrap
<Plug>(ale_next) - ALENext
<Plug>(ale_next_wrap) - ALENextWrap
<
For example, these commands could be bound to the keys Ctrl + j
and Ctrl + k: >
" Map movement through errors without wrapping.
nmap <silent> <C-k> <Plug>(ale_previous)
nmap <silent> <C-j> <Plug>(ale_next)
" OR map keys to use wrapping.
nmap <silent> <C-k> <Plug>(ale_previous_wrap)
nmap <silent> <C-j> <Plug>(ale_next_wrap)
<
===============================================================================
6. API *ale-api*
ale#Queue(delay) *ale#Queue()*
Run linters for the current buffer, based on the filetype of the buffer,
@ -671,13 +704,13 @@ ALELint *ALELint*
===============================================================================
6. Special Thanks *ale-special-thanks*
7. Special Thanks *ale-special-thanks*
Special thanks to Mark Grealish (https://www.bhalash.com/) for providing ALE's
snazzy looking ale glass logo. Cheers, Mark!
===============================================================================
7. Contact *ale-contact*
8. Contact *ale-contact*
If you like this plugin, and wish to get in touch, check out the GitHub
page for issues and more at https://github.com/w0rp/ale

12
plugin/ale.vim
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@ -131,6 +131,18 @@ let g:ale_statusline_format = get(g:, 'ale_statusline_format',
let g:ale_warn_about_trailing_whitespace =
\ get(g:, 'ale_warn_about_trailing_whitespace', 1)
" Define commands for moving through warnings and errors.
command! ALEPrevious :call ale#loclist_jumping#Jump('before', 0)
command! ALEPreviousWrap :call ale#loclist_jumping#Jump('before', 1)
command! ALENext :call ale#loclist_jumping#Jump('after', 0)
command! ALENextWrap :call ale#loclist_jumping#Jump('after', 1)
" <Plug> mappings for commands
nnoremap <silent> <Plug>(ale_previous) :ALEPrevious<Return>
nnoremap <silent> <Plug>(ale_previous_wrap) :ALEPreviousWrap<Return>
nnoremap <silent> <Plug>(ale_next) :ALENext<Return>
nnoremap <silent> <Plug>(ale_next_wrap) :ALENextWrap<Return>
" Housekeeping
augroup ALECleanupGroup