add rc/scala.kak

rc/scala.kak

@@ -0,0 +1,84 @@
+# http://scala-lang.org
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+# Detection
+# ‾‾‾‾‾‾‾‾‾
+
+hook global BufSetOption mimetype=text/x-scala %{
+    set buffer filetype scala
+}
+
+hook global BufCreate .*[.](scala) %{
+    set buffer filetype scala
+}
+
+# Highlighters
+# ‾‾‾‾‾‾‾‾‾‾‾‾
+
+addhl -group / regions -default code scala \
+    string  '"' (?<!\\)(\\\\)*"         '' \
+    literal  `    `                     '' \
+    comment  //   $                     '' \
+    comment /[*] [*]/                 /[*]
+
+addhl -group /scala/string  fill string
+addhl -group /scala/literal fill identifier
+addhl -group /scala/comment fill comment
+
+# Keywords are collected at
+# http://tutorialspoint.com/scala/scala_basic_syntax.htm
+
+addhl -group /scala/code regex \<(import|package)\> 0:meta
+addhl -group /scala/code regex \<(this|true|false|null)\> 0:value
+addhl -group /scala/code regex \<(become|case|catch|class|def|do|else|extends|final|finally|for|forSome|goto|if|initialize|macro|match|new|object|onTransition|return|startWith|stay|throw|trait|try|unbecome|using|val|var|when|while|with|yield)\> 0:keyword
+addhl -group /scala/code regex \<(abstract|final|implicit|implicitly|lazy|override|private|protected|require|sealed|super)\> 0:attribute
+addhl -group /scala/code regex \<(⇒|=>|<:|:>|=:=|::|&&|\|\|)\> 0:operator
+addhl -group /scala/code regex "'[_A-Za-z0-9$]+" 0:identifier
+
+# Commands
+# ‾‾‾‾‾‾‾‾
+
+def -hidden _scala_filter_around_selections %{
+    eval -draft -itersel %{
+        exec <a-x>
+        # remove trailing white spaces
+        try %{ exec -draft s \h+$ <ret> d }
+    }
+}
+
+def -hidden _scala_indent_on_new_line %[
+    eval -draft -itersel %[
+        # preserve previous line indent
+        try %[ exec -draft <space> K <a-&> ]
+        # filter previous line
+        try %[ exec -draft k : _scala_filter_around_selections <ret> ]
+        # copy // comments prefix and following white spaces
+        try %[ exec -draft k x s ^\h*\K#\h* <ret> y j p ]
+        # indent after lines ending with {
+        try %[ exec -draft k x <a-k> \{$ <ret> j <a-gt> ]
+    ]
+]
+
+def -hidden _scala_indent_on_closing_curly_brace %[
+    eval -draft -itersel %[
+        # align to opening curly brace when alone on a line
+        try %[ exec -draft <a-h> <a-k> ^\h+\}$ <ret> m s \`|.\' <ret> 1<a-&> ]
+    ]
+]
+
+# Initialization
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+hook global WinSetOption filetype=scala %[
+    addhl ref scala
+
+    hook window InsertEnd  .* -group scala-hooks  _scala_filter_around_selections
+    hook window InsertChar \n -group scala-indent _scala_indent_on_new_line
+    hook window InsertChar \} -group scala-indent _scala_indent_on_closing_curly_brace
+]
+
+hook global WinSetOption filetype=(?!scala).* %{
+    rmhl scala
+    rmhooks window scala-indent
+    rmhooks window scala-hooks
+}