Add syntax highlighting for Kakoune (#240)

diff --git a/highlighters/gwion.kak b/highlighters/gwion.kak
new file mode 100644 (file)
index 0000000..b0974bb
--- /dev/null
+++ b/highlighters/gwion.kak
@@ -0,0 +1,73 @@
+# Gwion syntax highlighting for kakoune
+
+provide-module -override gwion %{
+       add-highlighter shared/gwion regions
+       add-highlighter shared/gwion/other default-region group
+
+       # comment
+       add-highlighter shared/gwion/comment region '#!' '$' group
+       add-highlighter shared/gwion/comment/ fill comment
+
+       # preprocessor
+       add-highlighter shared/gwion/preproc region '#' '$' group
+       add-highlighter shared/gwion/preproc/ fill module
+
+       evaluate-commands %sh{
+               keywords='
+                       operator extends global abstract
+                       final
+                       default late if else
+                       break continue return while do
+                       until repeat for foreach match
+                       where when case varloop
+                       defer try perform handle retry
+                       fun function typedef distinct funptr
+                       new spork fork'
+
+               attributes='const var static private public protect variadic template samp ms second minute delay'
+               types='auto int float void Object Shred Event'
+               values='true false none this now me adc dac maybe'
+               builtins='__file__ __line__ __func__'
+               entities='class struct trait union enum'
+               operators='\\\? : \$ @ \\\+ - \\\* / % \~ \< \> \\\^ \\\| \& ! ='
+
+               join() { sep=$2; eval set -- $1; IFS="$sep"; echo "$*"; }
+
+               printf %s\\n "declare-option str-list gwion_static_words $(join "${keywords} ${attributes} ${types} ${values} ${decorators}" ' ')"
+
+               printf %s "
+                       add-highlighter shared/gwion/other/ regex \b($(join "${keywords}"   '|'))\b             0:keyword
+                       add-highlighter shared/gwion/other/ regex \b($(join "${attributes} ${entities}" '|'))\b 0:attribute
+                       add-highlighter shared/gwion/other/ regex \b($(join "${types}"      '|'))\b             0:type
+                       add-highlighter shared/gwion/other/ regex \b($(join "${values}"     '|'))\b             0:value
+                       add-highlighter shared/gwion/other/ regex \b($(join "${builtins}"   '|'))\b             0:builtin
+                       add-highlighter shared/gwion/other/ regex   ($(join "${operators}"  '|'))               0:operator
+               "
+       }
+
+       # literals
+       add-highlighter shared/gwion/other/ regex "\d*" 0:value
+       add-highlighter shared/gwion/other/ regex "\B'((\\.)|[^'\\])'\B" 0:value
+
+       # string
+       add-highlighter shared/gwion/string region '"' (?<!\\)(\\\\)*" group
+       add-highlighter shared/gwion/string/ fill string
+       add-highlighter shared/gwion/string/ regex \\[\\ntr'"] 0:keyword
+}
+
+hook global BufCreate .*\.(gw) %{ set-option buffer filetype gwion }
+hook global WinSetOption filetype=gwion %{ require-module gwion }
+
+hook -group wpp-highlight global WinSetOption filetype=gwion %{
+       add-highlighter window/gwion ref gwion
+       hook -once -always window WinSetOption filetype=.* %{ remove-highlighter window/gwion }
+}
+
+# comment token
+hook global BufSetOption filetype=gwion %{
+       set-option buffer comment_line '#!'
+       set-option buffer comment_block_begin '#!'
+       set-option buffer comment_block_end ''
+}
+
+