1
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mirror of https://git.savannah.gnu.org/git/emacs.git synced 2024-11-22 07:09:54 +00:00
emacs/lisp/progmodes/csharp-mode.el
Eli Zaretskii 0273914921 Merge from origin/emacs-29
bc56da92d8 ; Fix error in 'tex-recenter-output-buffer'
d17c5adc05 Fix regexp for recognizing PBM images
9e9f61866e Improve wording in ELisp manual
7427efa033 Fix typo (Bug#65764)
59c6624408 ; * lisp/ido.el (ido-completion-buffer): Fix :type (bug#6...
4ec4b18c2a Fix libgccjit build on Haiku
80bdcf8f35 (regexp-tests-backtrack-optimization): Mark it as failing
8a9e653cc8 ; Add regression test for bug#65726
6fad73d7cc * src/regex-emacs.c (mutually_exclusive_p): Fix inf-loop ...
1d3d419607 ; * lisp/files.el (save-some-buffers-functions): Doc fix ...
42b14c6e5b Bump seq version to 2.24
ff5190a174 Add note on ELPA to admin/notes/bug-triage
f1e4cbe72a ; * etc/PROBLEMS: Minor wording fix.
fd5593c7f2 * etc/PROBLEMS: Mention bug#65432 and its remedy.
dd896ea1e6 Ignore errors when checking for object initializers (bug#...
3550f44c17 ; Fix typos
5b246b9b81 * CONTRIBUTE: Document making ChangeLogs with Magit.
0bd4661941 Doc fixes for obsolete functions and variables
524c0c34f2 ; * lisp/ffap.el (ffap-rfs-regexp): Fix :type (bug#65698).
f48dccc467 Merge branch 'emacs-29' of git.savannah.gnu.org:/srv/git/...
71a85e2266 A revision to the Widget manual
dbbcf4a659 Fix fontification of " in edit-kbd-macro

# Conflicts:
#	test/src/regex-emacs-tests.el
2023-09-09 04:32:45 -04:00

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;;; csharp-mode.el --- Support for editing C# -*- lexical-binding: t; -*-
;; Copyright (C) 2022-2023 Free Software Foundation, Inc.
;; Author : Theodor Thornhill <theo@thornhill.no>
;; Jostein Kjønigsen <jostein@kjonigsen.net>
;; Maintainer : Theodor Thornhill <theo@thornhill.no>
;; Jostein Kjønigsen <jostein@kjonigsen.net>
;; Created : September 2022
;; Keywords : c# languages oop
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Support for editing C#.
;;; Code:
(require 'compile)
(require 'cc-mode)
(require 'cc-langs)
(require 'treesit)
(require 'c-ts-common) ; For comment indenting and filling.
(eval-when-compile
(require 'cc-fonts)
(require 'rx))
(declare-function treesit-parser-create "treesit.c")
(declare-function treesit-induce-sparse-tree "treesit.c")
(declare-function treesit-node-start "treesit.c")
(declare-function treesit-node-type "treesit.c")
(declare-function treesit-node-child-by-field-name "treesit.c")
(declare-function treesit-query-capture "treesit.c")
(defgroup csharp nil
"Major mode for editing C# code."
:group 'prog-mode)
(eval-and-compile
(defconst csharp--regex-identifier
"[A-Za-z][A-Za-z0-9_]*"
"Regex describing an identifier in C#.")
(defconst csharp--regex-identifier-matcher
(concat "\\(" csharp--regex-identifier "\\)")
"Regex matching an identifier in C#.")
(defconst csharp--regex-type-name
"[A-Z][A-Za-z0-9_]*"
"Regex describing a type identifier in C#.")
(defconst csharp--regex-type-name-matcher
(concat "\\(" csharp--regex-type-name "\\)")
"Regex matching a type identifier in C#.")
(defconst csharp--regex-using-or-namespace
(concat "^using" "\\|" "namespace"
"\\s *"
csharp--regex-type-name-matcher)
"Regex matching identifiers after a using or namespace
declaration."))
(eval-and-compile
(c-add-language 'csharp-mode 'java-mode)
(defun csharp--make-mode-syntax-table ()
(let ((table (make-syntax-table)))
(c-populate-syntax-table table)
(modify-syntax-entry ?@ "_" table)
table))
(defvar csharp--make-mode-syntax-table #'csharp--make-mode-syntax-table
"Workaround for Emacs bug#57065."))
(c-lang-defconst c-make-mode-syntax-table
csharp #'csharp--make-mode-syntax-table)
(c-lang-defconst c-identifier-syntax-modifications
csharp (append '((?@ . "w"))
(c-lang-const c-identifier-syntax-modifications)))
(c-lang-defconst c-symbol-start
csharp (concat "[" c-alpha "_@]"))
(c-lang-defconst c-opt-type-suffix-key
csharp (concat "\\(\\[" (c-lang-const c-simple-ws) "*\\]\\|\\?\\)"))
(c-lang-defconst c-identifier-ops
csharp '((left-assoc ".")))
(c-lang-defconst c-overloadable-operators
csharp '("+" "-" "*" "/" "%" "&" "|" "^" "<<" ">>" "=="
"!=" ">" "<" ">=" "<="))
(c-lang-defconst c-multiline-string-start-char
csharp ?@)
(c-lang-defconst c-ml-string-opener-re
;; "\\(\\(?:@\\$?\\)\\(\"\\)\\)"
csharp
(rx
(group
(or "@" "@$")
(group "\""))))
(c-lang-defconst c-ml-string-max-opener-len
csharp 3)
(c-lang-defconst c-ml-string-max-closer-len
csharp 2)
(c-lang-defconst c-ml-string-any-closer-re
;; "\\(?:\"\"\\)*\\(\\(\"\\)\\)\\(?:[^\"]\\|\\'\\)"
csharp
(rx
(seq
(zero-or-more "\"\"")
(group
(group "\""))
(or (not (any "\"")) eos))))
(c-lang-defconst c-ml-string-back-closer-re
;; "\\(?:\\`\\|[^\"]\\)\"*"
csharp
(rx
(seq
(or bos
(not (any "\"")))
(zero-or-more "\""))))
(c-lang-defconst c-type-prefix-kwds
csharp '("class" "interface" "struct"))
(c-lang-defconst c-class-decl-kwds
csharp '("class" "interface" "struct"))
;;; Keyword lists
(c-lang-defconst c-primitive-type-kwds
csharp '("bool" "byte" "sbyte" "char" "decimal" "double" "float" "int" "uint"
"long" "ulong" "short" "ushort" "void" "object" "string" "var"))
(c-lang-defconst c-other-decl-kwds
csharp nil)
(c-lang-defconst c-type-list-kwds
csharp nil)
(c-lang-defconst c-other-block-decl-kwds
csharp nil)
(c-lang-defconst c-return-kwds
csharp '("return"))
(c-lang-defconst c-typedef-kwds
csharp nil)
(c-lang-defconst c-typeof-kwds
csharp '("typeof" "is" "as"))
(c-lang-defconst c-type-modifier-prefix-kwds
csharp '("volatile"))
(c-lang-defconst c-type-modifier-kwds
csharp '("readonly" "new"))
(c-lang-defconst c-brace-list-decl-kwds
csharp '("enum" "new"))
(c-lang-defconst c-recognize-post-brace-list-type-p
csharp t)
(c-lang-defconst c-ref-list-kwds
csharp nil)
(c-lang-defconst c-using-kwds
csharp '("using"))
(c-lang-defconst c-equals-type-clause-kwds
csharp '("using"))
(defun csharp-at-vsemi-p (&optional pos)
(if pos (goto-char pos))
(save-excursion
(beginning-of-line)
(c-forward-syntactic-ws)
(looking-at "using\\s *(")))
(c-lang-defconst c-at-vsemi-p-fn
csharp 'csharp-at-vsemi-p)
(defun csharp-vsemi-status-unknown () t)
(c-lang-defconst c-vsemi-status-unknown-p-fn
csharp 'csharp-vsemi-status-unknown-p)
(c-lang-defconst c-modifier-kwds
csharp '("abstract" "default" "final" "native" "private" "protected"
"public" "partial" "internal" "readonly" "static" "event" "transient"
"volatile" "sealed" "ref" "out" "virtual" "implicit" "explicit"
"fixed" "override" "params" "async" "await" "extern" "unsafe"
"get" "set" "this" "const" "delegate"))
(c-lang-defconst c-other-kwds
csharp '("select" "from" "where" "join" "in" "on" "equals" "into"
"orderby" "ascending" "descending" "group" "when"
"let" "by" "namespace"))
(c-lang-defconst c-colon-type-list-kwds
csharp '("class" "struct" "interface"))
(c-lang-defconst c-block-stmt-1-kwds
csharp '("do" "else" "finally" "try"))
(c-lang-defconst c-block-stmt-1-2-kwds
csharp '("try"))
(c-lang-defconst c-block-stmt-2-kwds
csharp '("for" "if" "switch" "while" "catch" "foreach" "fixed" "checked"
"unchecked" "using" "lock"))
(c-lang-defconst c-simple-stmt-kwds
csharp '("break" "continue" "goto" "throw" "return" "yield"))
(c-lang-defconst c-constant-kwds
csharp '("true" "false" "null" "value"))
(c-lang-defconst c-primary-expr-kwds
csharp '("this" "base" "operator"))
(c-lang-defconst c-inexpr-class-kwds
csharp nil)
(c-lang-defconst c-class-decl-kwds
csharp '("class" "struct" "interface"))
(c-lang-defconst c-std-abbrev-keywords
csharp (append (c-lang-const c-std-abbrev-keywords) '("catch" "finally")))
(c-lang-defconst c-decl-prefix-re
csharp "\\([{}(;,<]+\\)")
(c-lang-defconst c-recognize-typeless-decls
csharp t)
(c-lang-defconst c-recognize-<>-arglists
csharp t)
(c-lang-defconst c-opt-cpp-prefix
csharp "\\s *#\\s *")
(c-lang-defconst c-opt-cpp-macro-define
csharp (if (c-lang-const c-opt-cpp-prefix)
"define"))
(c-lang-defconst c-cpp-message-directives
csharp '("error" "warning" "region"))
(c-lang-defconst c-cpp-expr-directives
csharp '("if" "elif"))
(c-lang-defconst c-other-op-syntax-tokens
csharp (append '("#")
(c-lang-const c-other-op-syntax-tokens)))
(c-lang-defconst c-line-comment-starter
csharp "//")
(c-lang-defconst c-doc-comment-start-regexp
csharp "///")
(c-add-style "csharp"
'("java"
(c-basic-offset . 4)
(c-comment-only-line-offset . (0 . 0))
(c-offsets-alist . ((inline-open . 0)
(arglist-intro . +)
(arglist-close . 0)
(inexpr-class . 0)
(case-label . +)
(cpp-macro . c-lineup-dont-change)
(substatement-open . 0)))))
(eval-and-compile
(unless (or (stringp c-default-style)
(assoc 'csharp-mode c-default-style))
(setq c-default-style
(cons '(csharp-mode . "csharp")
c-default-style))))
(defun csharp--color-forwards (font-lock-face)
(let (id-beginning)
(goto-char (match-beginning 0))
(forward-word)
(while (and (not (or (eq (char-after) ?\;)
(eq (char-after) ?\{)))
(progn
(forward-char)
(c-forward-syntactic-ws)
(setq id-beginning (point))
(> (skip-chars-forward
(c-lang-const c-symbol-chars))
0))
(not (get-text-property (point) 'face)))
(c-put-font-lock-face id-beginning (point) font-lock-face)
(c-forward-syntactic-ws))))
(c-lang-defconst c-basic-matchers-before
csharp `(
;; Warning face on unclosed strings
("\\s|" 0 font-lock-warning-face t nil)
;; Invalid single quotes
c-font-lock-invalid-single-quotes
;; Keyword constants
,@(when (c-lang-const c-constant-kwds)
(let ((re (c-make-keywords-re nil (c-lang-const c-constant-kwds))))
`((eval . (list ,(concat "\\<\\(" re "\\)\\>")
1 c-constant-face-name)))))
;; Keywords except the primitive types.
,`(,(concat "\\<" (c-lang-const c-regular-keywords-regexp))
1 font-lock-keyword-face)
;; Chained identifiers in using/namespace statements
,`(,(c-make-font-lock-search-function
csharp--regex-using-or-namespace
`((csharp--color-forwards font-lock-variable-name-face)
nil
(goto-char (match-end 0)))))
;; Negation character
(eval . (list "\\(!\\)[^=]" 1 c-negation-char-face-name))
;; Types after 'new'
(eval . (list (concat "\\<new\\> *" csharp--regex-type-name-matcher)
1 font-lock-type-face))
;; Single identifier in attribute
(eval . (list (concat "\\[" csharp--regex-type-name-matcher "\\][^;]")
1 font-lock-variable-name-face t))
;; Function names
(eval . (list "\\([A-Za-z0-9_]+\\)\\(<[a-zA-Z0-9, ]+>\\)?("
1 font-lock-function-name-face))
;; Nameof
(eval . (list (concat "\\(\\<nameof\\>\\) *(")
1 font-lock-function-name-face))
(eval . (list (concat "\\<nameof\\> *( *"
csharp--regex-identifier-matcher
" *) *")
1 font-lock-variable-name-face))
;; Catch statements with type only
(eval . (list (concat "\\<catch\\> *( *"
csharp--regex-type-name-matcher
" *) *")
1 font-lock-type-face))))
(c-lang-defconst c-basic-matchers-after
csharp (append
;; Merge with cc-mode defaults - enables us to add more later
(c-lang-const c-basic-matchers-after)))
(defcustom csharp-codedoc-tag-face 'c-doc-markup-face-name
"Face to be used on the codedoc docstring tags.
Should be one of the font lock faces, such as
`font-lock-variable-name-face' and friends.
Needs to be set before `csharp-mode' is loaded, because of
compilation and evaluation time conflicts."
:type 'symbol)
(defcustom csharp-font-lock-extra-types
(list csharp--regex-type-name)
(c-make-font-lock-extra-types-blurb "C#" "csharp-mode" (concat))
:type 'c-extra-types-widget
:group 'c)
(defconst csharp-font-lock-keywords-1 (c-lang-const c-matchers-1 csharp)
"Minimal font locking for C# mode.")
(defconst csharp-font-lock-keywords-2 (c-lang-const c-matchers-2 csharp)
"Fast normal font locking for C# mode.")
(defconst csharp-font-lock-keywords-3 (c-lang-const c-matchers-3 csharp)
"Accurate normal font locking for C# mode.")
(defvar csharp-font-lock-keywords csharp-font-lock-keywords-3
"Default expressions to highlight in C# mode.")
(defun csharp-font-lock-keywords-2 ()
(c-compose-keywords-list csharp-font-lock-keywords-2))
(defun csharp-font-lock-keywords-3 ()
(c-compose-keywords-list csharp-font-lock-keywords-3))
(defun csharp-font-lock-keywords ()
(c-compose-keywords-list csharp-font-lock-keywords))
;;; Doc comments
(defconst codedoc-font-lock-doc-comments
;; Most of this is taken from the javadoc example, however, we don't use the
;; '@foo' syntax, so I removed that. Supports the XML tags only
`((,(concat "</?\\sw" ; XML tags.
"\\("
(concat "\\sw\\|\\s \\|[=\n\r*.:]\\|"
"\"[^\"]*\"\\|'[^']*'")
"\\)*/?>")
0 ,csharp-codedoc-tag-face prepend nil)
;; ("\\([a-zA-Z0-9_]+\\)=" 0 font-lock-variable-name-face prepend nil)
;; ("\".*\"" 0 font-lock-string-face prepend nil)
("&\\(\\sw\\|[.:]\\)+;" ; XML entities.
0 ,csharp-codedoc-tag-face prepend nil)))
(defconst codedoc-font-lock-keywords
`((,(lambda (limit)
(c-font-lock-doc-comments "///" limit
codedoc-font-lock-doc-comments)))))
;;; End of doc comments
;;; Adding syntax constructs
(advice-add 'c-looking-at-inexpr-block
:around #'csharp-looking-at-inexpr-block)
(defun csharp-looking-at-inexpr-block (orig-fun &rest args)
(let ((res (csharp-at-lambda-header)))
(if res
res
(apply orig-fun args))))
(defun csharp-at-lambda-header ()
(save-excursion
(c-backward-syntactic-ws)
(unless (bobp)
(backward-char)
(c-safe (goto-char (scan-sexps (point) -1)))
(when (or (looking-at "([[:alnum:][:space:]_,]*)[ \t\n]*=>[ \t\n]*{")
(looking-at "[[:alnum:]_]+[ \t\n]*=>[ \t\n]*{"))
;; If we are at a C# lambda header
(cons 'inexpr (point))))))
(advice-add 'c-guess-basic-syntax
:around #'csharp-guess-basic-syntax)
(defun csharp-guess-basic-syntax (orig-fun &rest args)
(cond
(;; enum
(save-excursion
(goto-char (c-point 'boi))
(and
(eq (char-after) ?\{)
(save-excursion
(goto-char (c-point 'iopl))
(looking-at ".*enum.*"))))
`((class-open ,(c-point 'iopl))))
(;; Attributes
(save-excursion
(goto-char (c-point 'iopl))
(and
(eq (save-excursion
(skip-chars-forward " \t\n")
(char-after))
?\[)
(save-excursion
(c-go-list-forward)
(and (eq (char-before) ?\])
(not (eq (char-after) ?\;))))))
`((annotation-top-cont ,(c-point 'iopl))))
((and
;; Heuristics to find object initializers
(save-excursion
;; Next non-whitespace character should be '{'
(goto-char (c-point 'boi))
(unless (eq (char-after) ?{)
(ignore-errors (backward-up-list 1 t t)))
(save-excursion
;; 'new' should be part of the line
(goto-char (c-point 'iopl))
(looking-at ".*new.*")))
;; Line should not already be terminated
(save-excursion
(goto-char (c-point 'eopl))
(or (not (eq (char-before) ?\;))
(not (eq (char-before) ?\{)))))
(cond
((save-excursion
;; if we have a hanging brace on line before
(goto-char (c-point 'eopl))
(eq (char-before) ?\{))
`((brace-list-intro ,(c-point 'iopl))))
((save-excursion
;; if we have a hanging brace on line before
(goto-char (c-point 'boi))
(and (eq (char-after) ?\})
`((brace-list-close ,(save-excursion
(backward-up-list 1 t t)
(point)))))))
(t
`((block-open) (statement ,(c-point 'iopl))))))
(t
(apply orig-fun args))))
;;; End of new syntax constructs
;; When invoked by MSBuild, cscs errors look like this:
;; subfolder\file.cs(6,18): error CS1006: Name of constructor must
;; match name of class [c:\Users\user\project.csproj]
(defun csharp--compilation-error-file-resolve ()
"Resolve an msbuild error to a (filename . dirname) cons cell."
;; https://stackoverflow.com/a/18049590/429091
(cons (match-string 1) (file-name-directory (match-string 4))))
(defconst csharp-compilation-re-msbuild-error
(concat
"^[[:blank:]]*\\(?:[[:digit:]]+>\\)?"
"\\([^(\r\n)]+\\)(\\([0-9]+\\)\\(?:,\\([0-9]+\\)\\)?): "
"error [[:alnum:]]+: [^\r\n]+\\[\\([^]\r\n]+\\)\\]$")
"Regexp to match compilation error from msbuild.")
(defconst csharp-compilation-re-msbuild-warning
(concat
"^[[:blank:]]*\\(?:[[:digit:]]+>\\)?"
"\\([^(\r\n)]+\\)(\\([0-9]+\\)\\(?:,\\([0-9]+\\)\\)?): "
"warning [[:alnum:]]+: [^\r\n]+\\[\\([^]\r\n]+\\)\\]$")
"Regexp to match compilation warning from msbuild.")
;; Notes on xbuild and devenv commonalities
;;
;; These regexes were tailored for xbuild, but apart from the concurrent
;; build-marker ("1>") they share exactly the same match-markers.
;;
;; If we don't exclude the match-markers explicitly, these regexes
;; will also be used to match for devenv as well, including the build-marker
;; in the file-name, causing the lookup to fail.
;;
;; So if we don't want devenv to fail, we actually need to handle it in our
;; xbuild-regexes, but then we automatically get devenv-support for free.
(defconst csharp-compilation-re-xbuild-error
(concat
"^[[:blank:]]*\\(?:[[:digit:]]+>\\)?"
"\\([^(\r\n)]+\\)(\\([0-9]+\\)\\(?:,\\([0-9]+\\)\\)?"
;; handle weird devenv output format with 4 numbers, not 2 by having optional
;; extra capture-groups.
"\\(?:,\\([0-9]+\\)\\)*): "
"error [[:alnum:]]+: .+$")
"Regexp to match compilation error from xbuild.")
(defconst csharp-compilation-re-xbuild-warning
(concat
"^[[:blank:]]*\\(?:[[:digit:]]+>\\)?"
"\\([^(\r\n)]+\\)(\\([0-9]+\\)\\(?:,\\([0-9]+\\)\\)?"
;; handle weird devenv output format with 4 numbers, not 2 by having optional
;; extra capture-groups.
"\\(?:,\\([0-9]+\\)\\)*): "
"warning [[:alnum:]]+: .+$")
"Regexp to match compilation warning from xbuild.")
(defconst csharp-compilation-re-dotnet-error
"\\([^\r\n]+\\) : error [A-Z]+[0-9]+:")
(defconst csharp-compilation-re-dotnet-warning
"\\([^\r\n]+\\) : warning [A-Z]+[0-9]+:")
(defconst csharp-compilation-re-dotnet-testfail
(concat
"[[:blank:]]+Stack Trace:\n"
"[[:blank:]]+at [^\n]+ in \\([^\n]+\\):line \\([0-9]+\\)"))
(eval-after-load 'compile
(lambda ()
(dolist
(regexp
`((dotnet-testfail
,csharp-compilation-re-dotnet-testfail
1 2)
(xbuild-error
,csharp-compilation-re-xbuild-error
1 2 3 2)
(xbuild-warning
,csharp-compilation-re-xbuild-warning
1 2 3 1)
(msbuild-error
,csharp-compilation-re-msbuild-error
csharp--compilation-error-file-resolve
2
3
2
nil
(1 compilation-error-face)
(4 compilation-error-face))
(msbuild-warning
,csharp-compilation-re-msbuild-warning
csharp--compilation-error-file-resolve
2
3
1
nil
(1 compilation-warning-face)
(4 compilation-warning-face))
(dotnet-error
,csharp-compilation-re-dotnet-error
1)
(dotnet-warning
,csharp-compilation-re-dotnet-warning
1 nil nil 1)))
(add-to-list 'compilation-error-regexp-alist-alist regexp)
(add-to-list 'compilation-error-regexp-alist (car regexp)))))
(defvar csharp-mode-syntax-table
(funcall (c-lang-const c-make-mode-syntax-table csharp))
"Syntax table used in `csharp-mode' buffers.")
(defvar csharp-mode-map
(let ((map (c-make-inherited-keymap)))
map)
"Keymap used in `csharp-mode' buffers.")
(easy-menu-define csharp-mode-menu csharp-mode-map "C# Mode Commands."
(cons "C#" (c-lang-const c-mode-menu csharp)))
;;; Tree-sitter support
(defcustom csharp-ts-mode-indent-offset 4
"Number of spaces for each indentation step in `csharp-ts-mode'."
:type 'integer
:safe 'integerp
:group 'csharp)
(defvar csharp-ts-mode--indent-rules
`((c-sharp
((parent-is "compilation_unit") parent-bol 0)
((node-is "}") parent-bol 0)
((node-is ")") parent-bol 0)
((node-is "]") parent-bol 0)
((and (parent-is "comment") c-ts-common-looking-at-star)
c-ts-common-comment-start-after-first-star -1)
((parent-is "comment") prev-adaptive-prefix 0)
((parent-is "namespace_declaration") parent-bol 0)
((parent-is "class_declaration") parent-bol 0)
((parent-is "constructor_declaration") parent-bol 0)
((parent-is "initializer_expression") parent-bol csharp-ts-mode-indent-offset)
((match "{" "anonymous_object_creation_expression") parent-bol 0)
((parent-is "anonymous_object_creation_expression") parent-bol csharp-ts-mode-indent-offset)
((match "{" "object_creation_expression") parent-bol 0)
((parent-is "object_creation_expression") parent-bol 0)
((parent-is "method_declaration") parent-bol 0)
((parent-is "enum_declaration") parent-bol 0)
((parent-is "operator_declaration") parent-bol 0)
((parent-is "field_declaration") parent-bol 0)
((parent-is "struct_declaration") parent-bol 0)
((parent-is "declaration_list") parent-bol csharp-ts-mode-indent-offset)
((parent-is "argument_list") parent-bol csharp-ts-mode-indent-offset)
((parent-is "interpolation") parent-bol csharp-ts-mode-indent-offset)
((parent-is "binary_expression") parent 0)
((parent-is "block") parent-bol csharp-ts-mode-indent-offset)
((parent-is "local_function_statement") parent-bol 0)
((parent-is "if_statement") parent-bol 0)
((parent-is "for_statement") parent-bol 0)
((parent-is "for_each_statement") parent-bol 0)
((parent-is "while_statement") parent-bol 0)
((match "{" "switch_expression") parent-bol 0)
((parent-is "switch_statement") parent-bol 0)
((parent-is "switch_body") parent-bol csharp-ts-mode-indent-offset)
((parent-is "switch_section") parent-bol csharp-ts-mode-indent-offset)
((parent-is "switch_expression") parent-bol csharp-ts-mode-indent-offset)
((parent-is "case_statement") parent-bol 0)
((parent-is "do_statement") parent-bol 0)
((parent-is "equals_value_clause") parent-bol csharp-ts-mode-indent-offset)
((parent-is "ternary_expression") parent-bol csharp-ts-mode-indent-offset)
((parent-is "conditional_expression") parent-bol csharp-ts-mode-indent-offset)
((parent-is "statement_block") parent-bol csharp-ts-mode-indent-offset)
((parent-is "type_arguments") parent-bol csharp-ts-mode-indent-offset)
((parent-is "variable_declarator") parent-bol csharp-ts-mode-indent-offset)
((parent-is "arguments") parent-bol csharp-ts-mode-indent-offset)
((parent-is "array") parent-bol csharp-ts-mode-indent-offset)
((parent-is "formal_parameters") parent-bol csharp-ts-mode-indent-offset)
((parent-is "template_substitution") parent-bol csharp-ts-mode-indent-offset)
((parent-is "object_pattern") parent-bol csharp-ts-mode-indent-offset)
((parent-is "object") parent-bol csharp-ts-mode-indent-offset)
((parent-is "object_type") parent-bol csharp-ts-mode-indent-offset)
((parent-is "enum_body") parent-bol csharp-ts-mode-indent-offset)
((parent-is "arrow_function") parent-bol csharp-ts-mode-indent-offset)
((parent-is "parenthesized_expression") parent-bol csharp-ts-mode-indent-offset))))
(defvar csharp-ts-mode--keywords
'("using" "namespace" "class" "if" "else" "throw" "new" "for"
"return" "await" "struct" "enum" "switch" "case"
"default" "typeof" "try" "catch" "finally" "break"
"foreach" "in" "yield" "get" "set" "when" "as" "out"
"is" "while" "continue" "this" "ref" "goto" "interface"
"from" "where" "select" "lock" "base" "record" "init"
"with" "let" "static" "var" "do" "public" "private"
"readonly" "unmanaged")
"C# keywords for tree-sitter font-locking.")
(defvar csharp-ts-mode--font-lock-settings
(treesit-font-lock-rules
:language 'c-sharp
:feature 'expression
'((conditional_expression (identifier) @font-lock-variable-use-face)
(postfix_unary_expression (identifier)* @font-lock-variable-use-face)
(initializer_expression (assignment_expression left: (identifier) @font-lock-variable-use-face)))
:language 'c-sharp
:feature 'bracket
'((["(" ")" "[" "]" "{" "}"]) @font-lock-bracket-face)
:language 'c-sharp
:feature 'delimiter
'((["," ":" ";"]) @font-lock-delimiter-face)
:language 'c-sharp
:feature 'error
'((ERROR) @font-lock-warning-face)
:language 'c-sharp
:override t
:feature 'comment
'((comment) @font-lock-comment-face)
:language 'c-sharp
:override t
:feature 'keyword
`([,@csharp-ts-mode--keywords] @font-lock-keyword-face
(modifier) @font-lock-keyword-face
(this_expression) @font-lock-keyword-face)
:language 'c-sharp
:override t
:feature 'property
`((attribute (identifier) @font-lock-property-use-face (attribute_argument_list))
(attribute (identifier) @font-lock-property-use-face))
:language 'c-sharp
:override t
:feature 'escape-sequence
'((escape_sequence) @font-lock-escape-face)
:language 'c-sharp
:override t
:feature 'literal
`((integer_literal) @font-lock-number-face
(real_literal) @font-lock-number-face
(null_literal) @font-lock-constant-face
(boolean_literal) @font-lock-constant-face)
:language 'c-sharp
:override t
:feature 'string
`([(string_literal)
(verbatim_string_literal)
(interpolated_string_text)
(interpolated_verbatim_string_text)
(character_literal)
"\""
"$\""
"@$\""
"$@\""] @font-lock-string-face)
:language 'c-sharp
:override t
:feature 'type
'((predefined_type) @font-lock-type-face
(implicit_type) @font-lock-type-face
(nullable_type) @font-lock-type-face
(type_parameter
(identifier) @font-lock-type-face)
(type_argument_list
(identifier) @font-lock-type-face)
(type_argument_list
(generic_name
(identifier) @font-lock-type-face))
(base_list
(generic_name
(identifier) @font-lock-type-face))
(array_type
(identifier) @font-lock-type-face)
(cast_expression (identifier) @font-lock-type-face)
(cast_expression (generic_name (identifier) @font-lock-type-face))
["operator"] @font-lock-type-face
(type_parameter_constraints_clause
target: (identifier) @font-lock-type-face)
(type_constraint type: (identifier) @font-lock-type-face)
(type_constraint type: (generic_name (identifier) @font-lock-type-face))
(type_of_expression (identifier) @font-lock-type-face)
(object_creation_expression
type: (identifier) @font-lock-type-face)
(object_creation_expression
type: (generic_name (identifier) @font-lock-type-face))
(as_expression right: (identifier) @font-lock-type-face)
(as_expression right: (generic_name (identifier) @font-lock-type-face)))
:language 'c-sharp
:feature 'definition
:override t
`((qualified_name (identifier) @font-lock-type-face)
(using_directive (identifier) @font-lock-type-face)
(using_directive (name_equals
(identifier) @font-lock-type-face))
(enum_declaration (identifier) @font-lock-type-face)
(enum_member_declaration (identifier) @font-lock-variable-name-face)
(interface_declaration (identifier) @font-lock-type-face)
(struct_declaration (identifier) @font-lock-type-face)
(record_declaration (identifier) @font-lock-type-face)
(namespace_declaration (identifier) @font-lock-type-face)
(base_list (identifier) @font-lock-type-face)
(property_declaration
type: (nullable_type) @font-lock-type-face
name: (identifier) @font-lock-variable-name-face)
(property_declaration
type: (predefined_type) @font-lock-type-face
name: (identifier) @font-lock-variable-name-face)
(property_declaration
type: (identifier) @font-lock-type-face
name: (identifier) @font-lock-variable-name-face)
(class_declaration (identifier) @font-lock-type-face)
(constructor_declaration name: (_) @font-lock-type-face)
;;; Handle different releases of tree-sitter-c-sharp.
;;; Check if keyword void_keyword is available, then return the correct rule."
,@(condition-case nil
(progn (treesit-query-capture 'csharp '((void_keyword) @capture))
`((method_declaration type: [(identifier) (void_keyword)] @font-lock-type-face)))
(error
`((method_declaration type: [(identifier) (predefined_type)] @font-lock-type-face))))
(method_declaration type: (generic_name (identifier) @font-lock-type-face))
(method_declaration name: (_) @font-lock-function-name-face)
(catch_declaration
((identifier) @font-lock-type-face))
(catch_declaration
((identifier) @font-lock-type-face
(identifier) @font-lock-variable-name-face))
(variable_declaration (identifier) @font-lock-type-face)
(variable_declaration (generic_name (identifier) @font-lock-type-face))
(variable_declarator (identifier) @font-lock-variable-name-face)
(parameter type: (identifier) @font-lock-type-face)
(parameter type: (generic_name (identifier) @font-lock-type-face))
(parameter name: (identifier) @font-lock-variable-name-face)
(lambda_expression (identifier) @font-lock-variable-name-face)
(declaration_expression type: (identifier) @font-lock-type-face)
(declaration_expression name: (identifier) @font-lock-variable-name-face))
:language 'c-sharp
:feature 'function
'((invocation_expression
function: (member_access_expression
name: (identifier) @font-lock-function-call-face))
(invocation_expression
function: (identifier) @font-lock-function-call-face)
(invocation_expression
function: (member_access_expression
name: (generic_name (identifier) @font-lock-function-call-face)))
(invocation_expression
function: (generic_name (identifier) @font-lock-function-call-face)))
:language 'c-sharp
:feature 'escape-sequence
:override t
'((escape_sequence) @font-lock-escape-face)
:language 'c-sharp
:feature 'directives
:override t
'((if_directive
"if" @font-lock-preprocessor-face
(identifier) @font-lock-variable-use-face)
(elif_directive
"elif" @font-lock-preprocessor-face
(identifier) @font-lock-variable-use-face)
(else_directive) @font-lock-preprocessor-face
(endif_directive) @font-lock-preprocessor-face
(define_directive
"define" @font-lock-preprocessor-face
(identifier) @font-lock-variable-use-face)
(nullable_directive) @font-lock-preprocessor-face
(pragma_directive) @font-lock-preprocessor-face
(region_directive) @font-lock-preprocessor-face
(endregion_directive) @font-lock-preprocessor-face
(region_directive
(preproc_message) @font-lock-variable-use-face)
(endregion_directive
(preproc_message) @font-lock-variable-use-face))))
;;;###autoload
(add-to-list 'auto-mode-alist '("\\.cs\\'" . csharp-mode))
(defun csharp-ts-mode--defun-name (node)
"Return the defun name of NODE.
Return nil if there is no name or if NODE is not a defun node."
(pcase (treesit-node-type node)
((or "method_declaration"
"record_declaration"
"struct_declaration"
"enum_declaration"
"interface_declaration"
"class_declaration")
(treesit-node-text
(treesit-node-child-by-field-name
node "name")
t))))
;;;###autoload
(define-derived-mode csharp-mode prog-mode "C#"
"Major mode for editing Csharp code.
Key bindings:
\\{csharp-mode-map}"
:after-hook (c-update-modeline)
(c-initialize-cc-mode t)
(c-init-language-vars csharp-mode)
(c-common-init 'csharp-mode)
(setq-local c-doc-comment-style '((csharp-mode . codedoc)))
(run-mode-hooks 'c-mode-common-hook))
;;;###autoload
(define-derived-mode csharp-ts-mode prog-mode "C#"
"Major mode for editing C# code."
:syntax-table (csharp--make-mode-syntax-table)
(unless (treesit-ready-p 'c-sharp)
(error "Tree-sitter for C# isn't available"))
;; Tree-sitter.
(treesit-parser-create 'c-sharp)
;; Comments.
(c-ts-common-comment-setup)
(setq-local treesit-thing-settings
`((c-sharp
(text
,(regexp-opt '("comment"
"verbatim_string-literal"
"interpolated_verbatim_string-text"))))))
;; Indent.
(setq-local treesit-simple-indent-rules csharp-ts-mode--indent-rules)
;; Electric
(setq-local electric-indent-chars
(append "{}():;," electric-indent-chars))
;; Navigation.
(setq-local treesit-defun-type-regexp "declaration")
(setq-local treesit-defun-name-function #'csharp-ts-mode--defun-name)
;; Font-lock.
(setq-local treesit-font-lock-settings csharp-ts-mode--font-lock-settings)
(setq-local treesit-font-lock-feature-list
'(( comment definition)
( keyword string type directives)
( constant escape-sequence expression literal property)
( function bracket delimiter error)))
;; Imenu.
(setq-local treesit-simple-imenu-settings
'(("Class" "\\`class_declaration\\'" nil nil)
("Interface" "\\`interface_declaration\\'" nil nil)
("Enum" "\\`enum_declaration\\'" nil nil)
("Record" "\\`record_declaration\\'" nil nil)
("Struct" "\\`struct_declaration\\'" nil nil)
("Method" "\\`method_declaration\\'" nil nil)))
(treesit-major-mode-setup)
(add-to-list 'auto-mode-alist '("\\.cs\\'" . csharp-ts-mode)))
(provide 'csharp-mode)
;;; csharp-mode.el ends here