From 8f6ef9512f871acef05ba50a833d441dc3d91e66 Mon Sep 17 00:00:00 2001
From: Bob Qi <baobin.qi@gmail.com>
Date: Wed, 6 Sep 2023 16:19:05 +0800
Subject: [PATCH] add groovy filetype

---
 rc/filetype/groovy.kak | 92 ++++++++++++++++++++++++++++++++++++++++++
 rc/tools/comment.kak   |  2 +-
 2 files changed, 93 insertions(+), 1 deletion(-)
 create mode 100644 rc/filetype/groovy.kak

diff --git a/rc/filetype/groovy.kak b/rc/filetype/groovy.kak
new file mode 100644
index 000000000..144d7de6d
--- /dev/null
+++ b/rc/filetype/groovy.kak
@@ -0,0 +1,92 @@
+# Adapted from the file created by Daniel Lewan TeddyDD
+
+hook global BufCreate "(.+\.(groovy|gvy|gy|gsh|gradle))|.+[Jj]enkinsfile.*" %{
+    set-option buffer filetype groovy
+}
+
+hook global WinSetOption filetype=groovy %{
+    require-module groovy
+
+    set-option window static_words %opt{groovy_static_words}
+
+    hook window ModeChange pop:insert:.* -group groovy-trim-indent %{ try %{ execute-keys -draft xs^\h+$<ret>d } }
+    hook window InsertChar \n -group groovy-insert groovy-insert-on-new-line
+    hook window InsertChar \n -group groovy-indent groovy-indent-on-new-line
+    hook window InsertChar \{ -group groovy-indent groovy-indent-on-opening-curly-brace
+    hook window InsertChar \} -group groovy-indent groovy-indent-on-closing-curly-brace
+    hook -once -always window WinSetOption filetype=.* %{ remove-hooks window groovy-.+ }
+}
+
+hook -group groovy-highlight global WinSetOption filetype=groovy %{
+    add-highlighter window/groovy ref groovy
+    hook -once -always window WinSetOption filetype=.* %{ remove-highlighter window/groovy }
+}
+
+provide-module groovy %§
+
+add-highlighter shared/groovy regions
+
+add-highlighter shared/groovy/code default-region group
+add-highlighter shared/groovy/triple_quote region '"{3}'   (?<!\\)(\\\\)*"{3}  fill string
+add-highlighter shared/groovy/double_string region '"'   (?<!\\)(\\\\)*"  fill string
+add-highlighter shared/groovy/single_string region "'"   (?<!\\)(\\\\)*'  fill string
+add-highlighter shared/groovy/comment1 region '/\*[^*]?' '\*/' fill comment
+add-highlighter shared/groovy/comment2 region '//[^/]?' $ fill comment
+add-highlighter shared/groovy/shellbang region '#!.+' $ fill comment
+add-highlighter shared/groovy/dollar_string region "\$/" "(?<!\$)/\$"   fill string
+# add-highlighter shared/groovy/code/identifiers regex '\b[$_]?[a-zA-Z0-9_]+\b' 0:variable
+add-highlighter shared/groovy/code/declaration regex "(?<typ>\w+)(?:\[.*?\])?\s+(\$?\w+)\s=" typ:type
+add-highlighter shared/groovy/code/numbers regex '\b[-+]?0x[A-Fa-f0-9_]+[.A-Fa-f0-9_p]*[lLiDgGIF]?|\b[-+]?[\d]+b?[.p_\dEe]*[lLiDgGIF]?' 0:value
+add-highlighter shared/groovy/slashy_string region "\b/\w" "(?<!\\)\w/\b"   fill string
+
+evaluate-commands %sh{
+  keywords="as|assert|break|case|catch|class|const|continue|def|default"
+  keywords="${keywords}|do|else|enum|extends|finally|for|goto|if|implements|import|in"
+  keywords="${keywords}|instanceof|interface|new|package|return|super|switch|this|throw"
+  keywords="${keywords}|throws|trait|try|while"
+  builtins="true|false|null"
+  types="byte|char|short|int|long|BigInteger|float|double|BigDecimal|boolean"
+
+  printf %s "
+    add-highlighter shared/groovy/code/keyword regex \b(${keywords})\b 0:keyword
+    add-highlighter shared/groovy/code/builtin regex \b(${builtins})\b 0:builtin
+    add-highlighter shared/groovy/code/types   regex \b(${types})\b    0:type
+
+    declare-option str-list groovy_static_words "${keywords}|${types}|${builtins}"
+  "
+}
+
+define-command -hidden groovy-insert-on-new-line %[
+        # copy // comments prefix and following white spaces
+        try %{ execute-keys -draft <semicolon><c-s>kx s ^\h*\K/{2,}\h* <ret> y<c-o>P<esc> }
+]
+
+define-command -hidden groovy-indent-on-new-line %~
+    evaluate-commands -draft -itersel %=
+        # preserve previous line indent
+        try %{ execute-keys -draft <semicolon>K<a-&> }
+        # indent after lines ending with { or (
+        try %[ execute-keys -draft kx <a-k> [{(]\h*$ <ret> j<a-gt> ]
+        # cleanup trailing white spaces on the previous line
+        try %{ execute-keys -draft kx s \h+$ <ret>d }
+        # align to opening paren of previous line
+        try %{ execute-keys -draft [( <a-k> \A\([^\n]+\n[^\n]*\n?\z <ret> s \A\(\h*.|.\z <ret> '<a-;>' & }
+        # indent after a switch's case/default statements
+        try %[ execute-keys -draft kx <a-k> ^\h*(case|default).*:$ <ret> j<a-gt> ]
+        # indent after keywords
+        try %[ execute-keys -draft <semicolon><a-F>)MB <a-k> \A(if|else|while|for|try|catch)\h*\(.*\)\h*\n\h*\n?\z <ret> s \A|.\z <ret> 1<a-&>1<a-space><a-gt> ]
+        # deindent closing brace(s) when after cursor
+        try %[ execute-keys -draft x <a-k> ^\h*[})] <ret> gh / [})] <ret> m <a-S> 1<a-&> ]
+    =
+~
+
+define-command -hidden groovy-indent-on-opening-curly-brace %[
+    # align indent with opening paren when { is entered on a new line after the closing paren
+    try %[ execute-keys -draft -itersel h<a-F>)M <a-k> \A\(.*\)\h*\n\h*\{\z <ret> s \A|.\z <ret> 1<a-&> ]
+]
+
+define-command -hidden groovy-indent-on-closing-curly-brace %[
+    # align to opening curly brace when alone on a line
+    try %[ execute-keys -itersel -draft <a-h><a-k>^\h+\}$<ret>hms\A|.\z<ret>1<a-&> ]
+]
+§
diff --git a/rc/tools/comment.kak b/rc/tools/comment.kak
index 4de897f65..3693b1274 100644
--- a/rc/tools/comment.kak
+++ b/rc/tools/comment.kak
@@ -16,7 +16,7 @@ hook global BufSetOption filetype=asciidoc %{
     set-option buffer comment_block_end '////'
 }
 
-hook global BufSetOption filetype=(c|cpp|dart|gluon|go|java|javascript|objc|php|protobuf|rust|sass|scala|scss|swift|typescript) %{
+hook global BufSetOption filetype=(c|cpp|dart|gluon|go|java|javascript|objc|php|protobuf|rust|sass|scala|scss|swift|typescript|groovy) %{
     set-option buffer comment_line '//'
     set-option buffer comment_block_begin '/*'
     set-option buffer comment_block_end '*/'