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| author | Marc André Tanner <mat@brain-dump.org> | 2017-02-22 18:33:57 +0100 |
|---|---|---|
| committer | Marc André Tanner <mat@brain-dump.org> | 2017-02-22 18:59:05 +0100 |
| commit | b8b374702e7f24401baa883a969eb7f4165ac696 (patch) | |
| tree | 8ddf5f3648ee708f4147b6a1e0dca594ec8a1ef6 /lua | |
| parent | 335814c9caef5a25430e9493cbc7d4f806c1f715 (diff) | |
| download | vis-b8b374702e7f24401baa883a969eb7f4165ac696.tar.gz vis-b8b374702e7f24401baa883a969eb7f4165ac696.tar.xz | |
lua: expose vis:module_exist method, load lexer and lpeg module during startup
Diffstat (limited to 'lua')
| -rw-r--r-- | lua/vis-std.lua | 20 | ||||
| -rw-r--r-- | lua/vis.lua | 26 |
2 files changed, 25 insertions, 21 deletions
diff --git a/lua/vis-std.lua b/lua/vis-std.lua index 6c42a0c..55d37d2 100644 --- a/lua/vis-std.lua +++ b/lua/vis-std.lua @@ -1,24 +1,6 @@ -- standard vis event handlers vis.events.subscribe(vis.events.INIT, function() - local package_exist = function(name) - for _, searcher in ipairs(package.searchers or package.loaders) do - local loader = searcher(name) - if type(loader) == 'function' then - return true - end - end - return false - end - - if not package_exist('lpeg') then - vis:info('WARNING: could not find lpeg module') - elseif not package_exist('lexer') then - vis:info('WARNING: could not find lexer module') - else - vis.lexers = require('lexer') - end - if os.getenv("TERM_PROGRAM") == "Apple_Terminal" then vis:command("set change-256colors false"); end @@ -41,7 +23,7 @@ end) vis.events.subscribe(vis.events.WIN_SYNTAX, function(win, name) local lexers = vis.lexers - if not lexers.load then return false end + if not lexers then return false end win:style_define(win.STYLE_DEFAULT, lexers.STYLE_DEFAULT or '') win:style_define(win.STYLE_CURSOR, lexers.STYLE_CURSOR or '') diff --git a/lua/vis.lua b/lua/vis.lua index f1aff45..24d00bd 100644 --- a/lua/vis.lua +++ b/lua/vis.lua @@ -5,8 +5,6 @@ --- -- @type Vis -vis.lexers = {} - --- Map a new motion. -- -- Sets up a mapping in normal, visual and operator pending mode. @@ -64,6 +62,30 @@ vis.textobject_new = function(vis, key, textobject, help) return true end +--- Check whether a Lua module exists +-- +-- Checks whether a subsequent @{require} call will succeed. +-- @tparam string name the module name to check +-- @treturn bool whether the module was found +vis.module_exist = function(vis, name) + for _, searcher in ipairs(package.searchers or package.loaders) do + local loader = searcher(name) + if type(loader) == 'function' then + return true + end + end + return false +end + +if not vis:module_exist('lpeg') then + vis:info('WARNING: could not find lpeg module') +elseif not vis:module_exist('lexer') then + vis:info('WARNING: could not find lexer module') +else + vis.lexers = require('lexer') + vis.lpeg = require('lpeg') +end + --- Events. -- -- User scripts can subscribe Lua functions to certain events. Multiple functions |