From 904cec3c4a329cf89fc3219d359239910d61f3f6 Mon Sep 17 00:00:00 2001
From: thing1 <thing1@seacrossedlovers.xyz>
Date: Tue, 28 Jan 2025 09:14:32 +0000
Subject: init commit

---
 autoload/filetype/java.kak | 129 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100644 autoload/filetype/java.kak

(limited to 'autoload/filetype/java.kak')

diff --git a/autoload/filetype/java.kak b/autoload/filetype/java.kak
new file mode 100644
index 0000000..69b0d74
--- /dev/null
+++ b/autoload/filetype/java.kak
@@ -0,0 +1,129 @@
+hook global BufCreate .*\.java %{
+    set-option buffer filetype java
+}
+
+# Initialization
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+hook global WinSetOption filetype=java %{
+    require-module java
+
+    set-option window static_words %opt{java_static_words}
+
+    # cleanup trailing whitespaces when exiting insert mode
+    hook window ModeChange pop:insert:.* -group java-trim-indent %{ try %{ execute-keys -draft xs^\h+$<ret>d } }
+    hook window InsertChar \n -group java-insert java-insert-on-new-line
+    hook window InsertChar \n -group java-indent java-indent-on-new-line
+    hook window InsertChar \{ -group java-indent java-indent-on-opening-curly-brace
+    hook window InsertChar \} -group java-indent java-indent-on-closing-curly-brace
+
+    hook -once -always window WinSetOption filetype=.* %{ remove-hooks window java-.+ }
+}
+
+hook -group java-highlight global WinSetOption filetype=java %{
+    add-highlighter window/java ref java
+    hook -once -always window WinSetOption filetype=.* %{ remove-highlighter window/java }
+}
+
+provide-module java %§
+
+add-highlighter shared/java regions
+add-highlighter shared/java/code default-region group
+add-highlighter shared/java/string region %{(?<!')"} %{(?<!\\)(\\\\)*"} fill string
+add-highlighter shared/java/character region %{'} %{(?<!\\)'} fill value
+add-highlighter shared/java/comment region /\* \*/ fill comment
+add-highlighter shared/java/inline_documentation region /// $ fill documentation
+add-highlighter shared/java/line_comment region // $ fill comment
+
+add-highlighter shared/java/code/ regex "(?<!\w)@\w+\b" 0:meta
+
+# Commands
+# ‾‾‾‾‾‾‾‾
+
+define-command -hidden java-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 java-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-,><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 java-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 java-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-&> ]
+]
+
+# Shell
+# ‾‾‾‾‾
+# Oracle 2021, 3.9 Keywords, Chapter 3. Lexical Structure, Java Language Specification, Java SE 17, viewed 25 September 2021, <https://docs.oracle.com/javase/specs/jls/se17/html/jls-3.html#jls-3.9>
+#
+evaluate-commands %sh{
+    values='false null this true'
+
+    types='boolean byte char double float int long short unsigned void'
+
+    keywords='assert break case catch class continue default do else enum extends
+        finally for if implements import instanceof interface new package return
+        static strictfp super switch throw throws try var while yield'
+
+    attributes='abstract final native non-sealed permits private protected public
+        record sealed synchronized transient volatile'
+
+    modules='exports module open opens provides requires to transitive uses with'
+
+    # ---------------------------------------------------------------------------------------------- #
+    join() { sep=$2; eval set -- $1; IFS="$sep"; echo "$*"; }
+    # ---------------------------------------------------------------------------------------------- #
+    add_highlighter() { printf "add-highlighter shared/java/code/ regex %s %s\n" "$1" "$2"; }
+    # ---------------------------------------------------------------------------------------------- #
+    add_word_highlighter() {
+
+      while [ $# -gt 0 ]; do
+          words=$1 face=$2; shift 2
+          regex="\\b($(join "${words}" '|'))\\b"
+          add_highlighter "$regex" "1:$face"
+      done
+
+    }
+
+    # highlight: open<space> not open()
+    add_module_highlighter() {
+
+      while [ $# -gt 0 ]; do
+          words=$1 face=$2; shift 2
+          regex="\\b($(join "${words}" '|'))\\b(?=\\s)"
+          add_highlighter "$regex" "1:$face"
+      done
+
+    }
+    # ---------------------------------------------------------------------------------------------- #
+    printf %s\\n "declare-option str-list java_static_words $(join "${values} ${types} ${keywords} ${attributes} ${modules}" ' ')"
+    # ---------------------------------------------------------------------------------------------- #
+    add_word_highlighter "$values" "value" "$types" "type" "$keywords" "keyword" "$attributes" "attribute"
+    # ---------------------------------------------------------------------------------------------- #
+    add_module_highlighter "$modules" "module"
+    # ---------------------------------------------------------------------------------------------- #
+}
+
+§
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