GNU bug report logs - #73521
CC Mode 5.35.2 (Java//l); ER: Java mode record support

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From: Arsen Arsenović <arsen <at> aarsen.me>
To: bug-gnu-emacs <at> gnu.org
Subject: CC Mode 5.35.2 (Java//l); ER: Java mode record support
Date: Fri, 27 Sep 2024 23:59:50 +0200

[Message part 1 (text/plain, inline)]

Package: cc-mode

Hi!

It'd appear that the Java mode does not support record syntax yet:

  public record R(int foo)
  {
    public void f() {}
  }
  
  public class C
  {
    public void f() {}
  }

... in this example, R::f is being recognized as defun-block-intro,
rather than inclass topmost-intro, like C::f is.

The record declarations are described at:
https://docs.oracle.com/javase/specs/jls/se23/html/jls-8.html#jls-RecordDeclaration

... and are quite similar to a class declaration, except the type name
is followed by something akin to a function parameter list.

The 'record' keyword is also not fontified.

Could support be added?

Thank you in advance!  Have a lovely day.

(PS: I would not consider this a priority bug - the tree-sitter mode
 will be okay in the meanwhile)

Emacs  : GNU Emacs 31.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.42, cairo version 1.18.2)
 of 2024-09-26
Package: CC Mode 5.35.2 (Java//l)
Buffer Style: gnu
c-emacs-features: (pps-extended-state col-0-paren posix-char-classes gen-string-delim gen-comment-delim syntax-properties category-properties 1-bit)

current state:
==============
(setq
 c-basic-offset 2
 c-comment-only-line-offset '(0 . 0)
 c-indent-comment-alist '((anchored-comment column . 0) (end-block space . 1) (cpp-end-block space . 2))
 c-indent-comments-syntactically-p nil
 c-block-comment-prefix ""
 c-comment-prefix-regexp '((pike-mode . "//+!?\\|\\**") (awk-mode . "#+") (other . "//+\\|\\**"))
 c-doc-comment-style '((java-mode . javadoc) (pike-mode . autodoc) (c-mode . gtkdoc) (c++-mode . gtkdoc))
 c-cleanup-list '(scope-operator)
 c-hanging-braces-alist '((substatement-open before after) (arglist-cont-nonempty))
 c-hanging-colons-alist nil
 c-hanging-semi&comma-criteria '(c-semi&comma-inside-parenlist)
 c-backslash-column 48
 c-backslash-max-column 72
 c-special-indent-hook '(t c-gnu-impose-minimum)
 c-label-minimum-indentation 1
 c-offsets-alist '((inexpr-class . +)
		   (inexpr-statement . +)
		   (lambda-intro-cont . +)
		   (inlambda . 0)
		   (template-args-cont c-lineup-template-args
 c-lineup-template-args-indented-from-margin)
		   (incomposition . +)
		   (inmodule . +)
		   (innamespace . +)
		   (inextern-lang . +)
		   (composition-close . 0)
		   (module-close . 0)
		   (namespace-close . 0)
		   (extern-lang-close . 0)
		   (composition-open . 0)
		   (module-open . 0)
		   (namespace-open . 0)
		   (extern-lang-open . 0)
		   (objc-method-call-cont c-lineup-ObjC-method-call-colons
 c-lineup-ObjC-method-call +)
		   (objc-method-args-cont . c-lineup-ObjC-method-args)
		   (objc-method-intro . [0])
		   (friend . 0)
		   (cpp-define-intro c-lineup-cpp-define +)
		   (cpp-macro-cont . +)
		   (cpp-macro . [0])
		   (inclass . +)
		   (stream-op . c-lineup-streamop)
		   (arglist-cont-nonempty c-lineup-gcc-asm-reg
 c-lineup-arglist)
		   (arglist-cont c-lineup-gcc-asm-reg 0)
		   (comment-intro c-lineup-knr-region-comment c-lineup-comment)
		   (catch-clause . 0)
		   (else-clause . 0)
		   (do-while-closure . 0)
		   (case-label . 0)
		   (substatement . +)
		   (statement-case-intro . +)
		   (statement . 0)
		   (enum-entry . 0)
		   (enum-intro . +)
		   (enum-close . 0)
		   (enum-open . class-open)
		   (brace-entry-open . 0)
		   (brace-list-entry . 0)
		   (brace-list-close . 0)
		   (brace-list-open . +)
		   (block-close . 0)
		   (block-open . 0)
		   (inher-intro . +)
		   (member-init-cont . c-lineup-multi-inher)
		   (member-init-intro . +)
		   (annotation-var-cont . 0)
		   (annotation-top-cont . 0)
		   (constraint-cont . +)
		   (topmost-intro . 0)
		   (knr-argdecl . 0)
		   (inline-close . 0)
		   (class-close . 0)
		   (class-open . 0)
		   (defun-block-intro . +)
		   (defun-close . 0)
		   (defun-open . 0)
		   (c . c-lineup-C-comments)
		   (string . c-lineup-dont-change)
		   (func-decl-cont . +)
		   (inher-cont . c-lineup-multi-inher)
		   (access-label . -)
		   (brace-list-intro first c-lineup-2nd-brace-entry-in-arglist
 c-lineup-class-decl-init-+ +)
		   (arglist-close . c-lineup-arglist)
		   (arglist-intro . c-lineup-arglist-intro-after-paren)
		   (statement-cont . +)
		   (statement-case-open . +)
		   (label . 0)
		   (substatement-label . 0)
		   (substatement-open . +)
		   (knr-argdecl-intro . 5)
		   (statement-block-intro . +)
		   (topmost-intro-cont first c-lineup-topmost-intro-cont
 c-lineup-gnu-DEFUN-intro-cont)
		   (inline-open . 0)
		   )
 c-buffer-is-cc-mode 'java-mode
 c-tab-always-indent t
 c-syntactic-indentation t
 c-syntactic-indentation-in-macros t
 c-ignore-auto-fill '(string cpp code)
 c-auto-align-backslashes t
 c-backspace-function 'backward-delete-char-untabify
 c-delete-function 'delete-char
 c-electric-pound-behavior nil
 c-default-style '((java-mode . "java") (awk-mode . "awk") (other . "gnu"))
 c-enable-xemacs-performance-kludge-p nil
 c-old-style-variable-behavior nil
 defun-prompt-regexp nil
 tab-width 8
 comment-column 32
 parse-sexp-ignore-comments t
 parse-sexp-lookup-properties t
 auto-fill-function 'c-do-auto-fill
 comment-multi-line t
 comment-start-skip "\\(?://+\\|/\\*+\\)\\s *"
 fill-prefix nil
 fill-column 79
 paragraph-start "[ 	]*\\(//+\\|\\**\\)[ 	]*\\(@[a-zA-Z]+\\>\\|$\\)\\|^\f"
 adaptive-fill-mode t
 adaptive-fill-regexp "[ 	]*\\(//+\\|\\**\\)[ 	]*\\([-–!|#%;>*·•‣⁃◦ 	]*\\)"
 )

-- 
Arsen Arsenović

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