vim/csapprox
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Validate the attr map only once per run

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Before, each call to s:attr_map() would make sure that the things being
mapped from and to were valid.  Optimize this by making sure all at once
that all things being mapped from, and all things being mapped to, are
valid, before using any attributes.
This commit is contained in:
Matt Wozniski 2009-03-28 02:25:15 -04:00
parent b0bab84bfe
commit af6d70e7f4
1 changed files with 42 additions and 30 deletions
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72
plugin/CSApprox.vim
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@ -345,44 +345,50 @@ endfunction
" can look up, to string values, representing the attribute mapped to or an
" empty string to disable the given attribute entirely.
function! s:attr_map(attr)
let attr = tolower(a:attr)
let rv = get(g:CSApprox_attr_map, a:attr, a:attr)
if attr == 'inverse'
let attr = 'reverse'
endif
return rv
endfunction
function! s:NormalizeAttrMap(map)
let old = copy(a:map)
let new = filter(a:map, '0')
let valid_attrs = [ 'bg', 'fg', 'sp', 'bold', 'italic',
\ 'reverse', 'underline', 'undercurl' ]
if index(valid_attrs, attr) == -1
throw "Looking up invalid attribute '" . attr . "'"
endif
if !exists("g:CSApprox_attr_map") || type(g:CSApprox_attr_map) != type({})
let g:CSApprox_attr_map = { 'italic' : 'underline', 'sp' : 'fg' }
endif
let rv = get(g:CSApprox_attr_map, attr, attr)
if index(valid_attrs, rv) == -1 && rv != ''
" The user mapped 'attr' to something invalid
throw "Bad attr map: '" . attr . "' to unknown attribute '" . rv . "'"
endif
let colorattrs = [ 'fg', 'bg', 'sp' ]
if rv != '' && !!(index(colorattrs, attr)+1) != !!(index(colorattrs, rv)+1)
" The attribute the user mapped to was valid, but of a different type.
throw "Bad attr map: Can't map color attr to boolean (".attr."->".rv.")"
endif
if rv == 'inverse'
let rv = 'reverse' " Internally always use 'reverse' instead of 'inverse'
elseif rv == 'sp'
" Terminals can't handle the guisp attribute; disable it if it was left on
let rv = ''
endif
for olhs in keys(old)
if olhs ==? 'inverse'
let nlhs = 'reverse'
endif
return rv
let orhs = old[olhs]
if orhs ==? 'inverse'
let nrhs = 'reverse'
endif
let nlhs = tolower(olhs)
let nrhs = tolower(orhs)
try
if index(valid_attrs, nlhs) == -1
echomsg "CSApprox: Bad attr map (removing unrecognized attribute " . olhs . ")"
elseif nrhs != '' && index(valid_attrs, nrhs) == -1
echomsg "CSApprox: Bad attr map (removing unrecognized attribute " . orhs . ")"
elseif nrhs != '' && !!(index(colorattrs, nlhs)+1) != !!(index(colorattrs, nrhs)+1)
echomsg "CSApprox: Bad attr map (removing " . olhs . "; type mismatch with " . orhs . ")"
elseif nrhs == 'sp'
echomsg "CSApprox: Bad attr map (removing " . olhs . "; can't map to 'sp')"
else
let new[nlhs] = nrhs
endif
catch
echo v:exception
endtry
endfor
endfunction
" {>2} Normalize the GUI settings of a highlight group
@ -626,6 +632,12 @@ function! s:CSApprox()
set lz
if exists("g:CSApprox_attr_map") && type(g:CSApprox_attr_map) == type({})
call s:NormalizeAttrMap(g:CSApprox_attr_map)
else
let g:CSApprox_attr_map = { 'italic' : 'underline', 'sp' : 'fg' }
endif
" colors_name must be unset and reset, or vim will helpfully reload the
" colorscheme when we set the background for the Normal group.
" See the help entries ':hi-normal-cterm' and 'g:colors_name'