531 lines
17 KiB
EmacsLisp
531 lines
17 KiB
EmacsLisp
;;; cc-menus.el --- imenu support for CC Mode -*- lexical-binding: t -*-
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;; Copyright (C) 1985, 1987, 1992-2024 Free Software Foundation, Inc.
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;; Authors: 1998- Martin Stjernholm
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;; 1992-1999 Barry A. Warsaw
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;; 1987 Dave Detlefs
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;; 1987 Stewart Clamen
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;; 1985 Richard M. Stallman
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;; Maintainer: bug-cc-mode@gnu.org
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;; Created: 22-Apr-1997 (split from cc-mode.el)
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;; Keywords: c languages
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;; Package: cc-mode
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;;; Code:
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(eval-when-compile
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(let ((load-path
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(if (and (boundp 'byte-compile-dest-file)
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(stringp byte-compile-dest-file))
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(cons (file-name-directory byte-compile-dest-file) load-path)
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load-path)))
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(load "cc-bytecomp" nil t)))
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(cc-require 'cc-defs)
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;; The things referenced in imenu, which we don't require.
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(cc-bytecomp-defvar imenu-case-fold-search)
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(cc-bytecomp-defvar imenu-generic-expression)
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(cc-bytecomp-defvar imenu-create-index-function)
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(cc-bytecomp-defun c-literal-limits)
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;; imenu integration
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(defvar cc-imenu-c-prototype-macro-regexp nil
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"RE matching macro names used to conditionally specify function prototypes.
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For example:
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#ifdef __STDC__
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#define _P(x) x
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#else
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#define _P(x) /*nothing*/
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#endif
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int main _P( (int argc, char *argv[]) )
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A sample value might look like: `\\(_P\\|_PROTO\\)'.")
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;; *Warning for cc-mode developers*
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;;
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;; `cc-imenu-objc-generic-expression' elements depend on
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;; `cc-imenu-c++-generic-expression'. So if you change this
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;; expression, you need to change following variables,
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;; `cc-imenu-objc-generic-expression-*-index',
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;; too. `cc-imenu-objc-function' uses these *-index variables, in
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;; order to know where the each regexp *group \\(foobar\\)* elements
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;; are started.
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;;
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;; *-index variables are initialized during `cc-imenu-objc-generic-expression'
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;; being initialized.
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;;
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(defvar cc-imenu-c++-generic-expression
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`(
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;; Try to match ::operator definitions first. Otherwise `X::operator new ()'
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;; will be incorrectly recognized as function `new ()' because the regexps
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;; work by backtracking from the end of the definition.
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(nil
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,(concat
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"^\\<.*"
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"[^" c-alnum "_:<>~]" ; match any non-identifier char
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; (note: this can be `\n')
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"\\("
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"\\([" c-alnum "_:<>~]*::\\)?" ; match an operator
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"operator\\>[ \t]*"
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"\\(()\\|[^(]*\\)" ; special case for `()' operator
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"\\)"
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"[ \t]*([^)]*)[ \t]*[^ \t;]" ; followed by ws, arg list,
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; require something other than
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; a `;' after the (...) to
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; avoid prototypes. Can't
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; catch cases with () inside
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; the parentheses surrounding
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; the parameters. e.g.:
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; `int foo(int a=bar()) {...}'
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) 1)
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;; Special case to match a line like `main() {}'
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;; e.g. no return type, not even on the previous line.
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(nil
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,(concat
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"^"
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"\\([" c-alpha "_][" c-alnum "_:<>~]*\\)" ; match function name
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"[ \t]*(" ; see above, BUT
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"[ \t]*\\([^ \t(*][^)]*\\)?)" ; the arg list must not start
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"[ \t]*[^ \t;(]" ; with an asterisk or parentheses
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) 1)
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;; General function name regexp
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(nil
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,(concat
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"^\\<" ; line MUST start with word char
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;; \n added to prevent overflow in regexp matcher.
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;; https://lists.gnu.org/r/emacs-pretest-bug/2007-02/msg00021.html
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"[^()\n]*" ; no parentheses before
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"[^" c-alnum "_:<>~]" ; match any non-identifier char
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"\\([" c-alpha "_][" c-alnum "_:<>~]*\\)" ; match function name
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"\\([ \t\n]\\|\\\\\n\\)*(" ; see above, BUT the arg list
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"\\([ \t\n]\\|\\\\\n\\)*" ; must not start
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"\\([^ \t\n(*]" ; with an asterisk or parentheses
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"[^()]*\\(([^()]*)[^()]*\\)*" ; Maybe function pointer arguments
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"\\)?)"
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"\\([ \t\n]\\|\\\\\n\\)*[^ \t\n;(]"
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) 1)
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;; Special case for definitions using phony prototype macros like:
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;; `int main _PROTO( (int argc,char *argv[]) )'.
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;; This case is only included if cc-imenu-c-prototype-macro-regexp is set.
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;; Only supported in c-code, so no `:<>~' chars in function name!
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,@(if cc-imenu-c-prototype-macro-regexp
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`((nil
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,(concat
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"^\\<.*" ; line MUST start with word char
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"[^" c-alnum "_]" ; match any non-identifier char
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"\\([" c-alpha "_][" c-alnum "_]*\\)" ; match function name
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"[ \t]*" ; whitespace before macro name
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cc-imenu-c-prototype-macro-regexp
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"[ \t]*(" ; ws followed by first paren.
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"[ \t]*([^)]*)[ \t]*)[ \t]*[^ \t;]" ; see above
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) 1)))
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;; Class definitions
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("Class"
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,(concat
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"^" ; beginning of line is required
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"\\(template[ \t]*<[^>]+>[ \t]*\\)?" ; there may be a `template <...>'
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"\\(class\\|struct\\)[ \t]+"
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"\\(" ; the string we want to get
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"[" c-alnum "_]+" ; class name
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"\\(<[^>]+>\\)?" ; possibly explicitly specialized
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"\\)"
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"\\([ \t\n]\\|\\\\\n\\)*[:{]"
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) 3))
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"Imenu generic expression for C++ mode. See `imenu-generic-expression'.")
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(defvar cc-imenu-c-generic-expression
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cc-imenu-c++-generic-expression
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"Imenu generic expression for C mode. See `imenu-generic-expression'.")
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;; Auxiliary regexps for Java try to match their trailing whitespace where
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;; appropriate, but _not_ starting whitespace.
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(defconst cc-imenu-java-ellipsis-regexp
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(concat
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"\\.\\{3\\}"
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"[ \t\n\r]*"))
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(defun cc-imenu-java-build-type-args-regex (depth)
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"Build regexp for type arguments list with DEPTH allowed
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nested angle brackets constructs."
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(if (> depth 0)
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(concat "<"
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"[][.," c-alnum "_? \t\n\r]+"
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(if (> depth 1)
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"\\(")
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(cc-imenu-java-build-type-args-regex (1- depth))
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(if (> depth 1)
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(concat "[][.," c-alnum "_? \t\n\r]*"
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"\\)*"))
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">")))
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(defconst cc-imenu-java-type-spec-regexp
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(concat
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;; zero or more identifiers followed by a dot
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"\\("
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"[" c-alpha "_][" c-alnum "_]*\\."
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"\\)*"
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;; a single mandatory identifier without a dot
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"[" c-alpha "_][" c-alnum "_]*"
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;; then choice:
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"\\("
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;; (option 1) type arguments list which _may_ be followed with brackets
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;; and/or spaces, then optional variable arity
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"[ \t\n\r]*"
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(cc-imenu-java-build-type-args-regex 3)
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"[][ \t\n\r]*"
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"\\(" cc-imenu-java-ellipsis-regexp "\\)?"
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"\\|"
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;; (option 2) just brackets and/or spaces (there should be at least one),
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;; then optional variable arity
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"[][ \t\n\r]+"
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"\\(" cc-imenu-java-ellipsis-regexp "\\)?"
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"\\|"
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;; (option 3) just variable arity
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cc-imenu-java-ellipsis-regexp
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"\\)"))
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(defconst cc-imenu-java-comment-regexp
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(concat
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"/"
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"\\("
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;; a traditional comment
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"\\*"
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"\\("
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"[^*]"
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"\\|"
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"\\*+[^/*]"
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"\\)*"
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"\\*+/"
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"\\|"
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;; an end-of-line comment
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"/[^\n\r]*[\n\r]"
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"\\)"
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"[ \t\n\r]*"
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))
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;; Comments are allowed before the argument, after any of the
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;; modifiers and after the identifier.
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(defconst cc-imenu-java-method-arg-regexp
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(concat
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"\\(" cc-imenu-java-comment-regexp "\\)*"
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;; optional modifiers
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"\\("
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;; a modifier is either an annotation or "final"
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"\\("
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"@[" c-alpha "_]"
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"[" c-alnum "._]*"
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;; TODO support element-value pairs!
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"\\|"
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"final"
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"\\)"
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;; a modifier ends with comments and/or ws
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"\\("
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"\\(" cc-imenu-java-comment-regexp "\\)+"
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"\\|"
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"[ \t\n\r]+"
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"\\(" cc-imenu-java-comment-regexp "\\)*"
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"\\)"
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"\\)*"
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;; type spec
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cc-imenu-java-type-spec-regexp
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;; identifier
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"[" c-alpha "_]"
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"[" c-alnum "_]*"
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;; optional comments and/or ws
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"[ \t\n\r]*"
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"\\(" cc-imenu-java-comment-regexp "\\)*"
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))
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(defconst cc-imenu-java-generic-expression
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`((nil
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,(concat
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cc-imenu-java-type-spec-regexp
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"\\(" ; method name which gets captured
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; into index
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"[" c-alpha "_]"
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"[" c-alnum "_]*"
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"\\)"
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"[ \t\n\r]*"
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;; An argument list that contains zero or more arguments.
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(concat
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"("
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"[ \t\n\r]*"
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"\\("
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"\\(" cc-imenu-java-method-arg-regexp ",[ \t\n\r]*\\)*"
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cc-imenu-java-method-arg-regexp
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"\\)?"
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")"
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"[.,_" c-alnum " \t\n\r]*" ; throws etc.
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"{"
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)) 7))
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"Imenu generic expression for Java mode. See `imenu-generic-expression'.")
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;; Internal variables
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(defvar cc-imenu-objc-generic-expression-noreturn-index nil)
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(defvar cc-imenu-objc-generic-expression-general-func-index nil)
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(defvar cc-imenu-objc-generic-expression-proto-index nil)
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(defvar cc-imenu-objc-generic-expression-objc-base-index nil)
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(defvar cc-imenu-objc-generic-expression
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(concat
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;;
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;; For C
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;;
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;; > Special case to match a line like `main() {}'
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;; > e.g. no return type, not even on the previous line.
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;; Pick a token by (match-string 1)
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(car (cdr (nth 1 cc-imenu-c++-generic-expression))) ; -> index += 2
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(prog2 (setq cc-imenu-objc-generic-expression-noreturn-index 1) "")
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"\\|"
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;; > General function name regexp
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;; Pick a token by (match-string 3)
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(car (cdr (nth 2 cc-imenu-c++-generic-expression))) ; -> index += 6
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(prog2 (setq cc-imenu-objc-generic-expression-general-func-index 3) "")
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;; > Special case for definitions using phony prototype macros like:
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;; > `int main _PROTO( (int argc,char *argv[]) )'.
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;; Pick a token by (match-string 8)
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(if cc-imenu-c-prototype-macro-regexp
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(concat
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"\\|"
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(car (cdr (nth 3 cc-imenu-c++-generic-expression))) ; -> index += 1
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(prog2 (setq cc-imenu-objc-generic-expression-objc-base-index 10) "")
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)
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(prog2 (setq cc-imenu-objc-generic-expression-objc-base-index 9) "")
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"") ; -> index += 0
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(prog2 (setq cc-imenu-objc-generic-expression-proto-index 9) "")
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;;
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;; For Objective-C
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;; Pick a token by (match-string 8 or 9)
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;;
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"\\|\\("
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"^[-+][:" c-alnum "()*_<>\n\t ]*[;{]" ; Methods
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"\\|"
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"^@interface[\t ]+[" c-alnum "_]+[\t ]*:"
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"\\|"
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"^@interface[\t ]+[" c-alnum "_]+[\t ]*([" c-alnum "_]+)"
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"\\|"
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;; For NSObject, NSProxy and Object... They don't have super class.
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"^@interface[\t ]+[" c-alnum "_]+[\t ]*.*$"
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"\\|"
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"^@implementation[\t ]+[" c-alnum "_]+[\t ]*([" c-alnum "_]+)"
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"\\|"
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"^@implementation[\t ]+[" c-alnum "_]+"
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"\\|"
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"^@protocol[\t ]+[" c-alnum "_]+" "\\)")
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"Imenu generic expression for ObjC mode. See `imenu-generic-expression'.")
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;; Imenu support for objective-c uses functions.
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(defsubst cc-imenu-objc-method-to-selector (method)
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"Return the objc selector style string of METHOD.
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Example:
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- perform: (SEL)aSelector withObject: object1 withObject: object2; /* METHOD */
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=>
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-perform:withObject:withObject:withObject: /* selector */"
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(let ((return "") ; String to be returned
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(p 0) ; Current scanning position in METHOD
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(pmax (length method)) ;
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char ; Current scanning target
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(betweenparen 0) ; CHAR is in parentheses.
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argreq ; An argument is required.
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inargvar) ; position of CHAR is in an argument variable.
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(while (< p pmax)
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(setq char (aref method p)
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p (1+ p))
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(cond
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;; Is CHAR part of an objc token?
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((and (not inargvar) ; Ignore if CHAR is part of an argument variable.
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(eq 0 betweenparen) ; Ignore if CHAR is in parentheses.
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(or (and (<= ?a char) (<= char ?z))
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(and (<= ?A char) (<= char ?Z))
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(and (<= ?0 char) (<= char ?9))
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(= ?_ char)))
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(if argreq
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(setq inargvar t
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argreq nil)
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(setq return (concat return (char-to-string char)))))
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;; Or a white space?
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((and inargvar (or (eq ?\ char) (eq ?\n char))
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(setq inargvar nil)))
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;; Or a method separator?
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;; If a method separator, the next token will be an argument variable.
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((eq ?: char)
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(setq argreq t
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return (concat return (char-to-string char))))
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;; Or an open parentheses?
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((eq ?\( char)
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(setq betweenparen (1+ betweenparen)))
|
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;; Or a close parentheses?
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((eq ?\) char)
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(setq betweenparen (1- betweenparen)))))
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return))
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(defun cc-imenu-objc-remove-white-space (str)
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"Remove all spaces and tabs from STR."
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(let ((return "")
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(p 0)
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(max (length str))
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char)
|
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(while (< p max)
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(setq char (aref str p))
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(setq p (1+ p))
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(if (or (= char ?\ ) (= char ?\t))
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()
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(setq return (concat return (char-to-string char)))))
|
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return))
|
||
|
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(defun cc-imenu-objc-function ()
|
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"Imenu support for Objective C mode."
|
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(let (methodlist
|
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clist
|
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;;
|
||
;; OBJC, Cnoreturn, Cgeneralfunc, Cproto are constants.
|
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;;
|
||
;; *Warning for developers*
|
||
;; These constants depend on `cc-imenu-c++-generic-expression'.
|
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;;
|
||
(OBJC cc-imenu-objc-generic-expression-objc-base-index)
|
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;; Special case to match a line like `main() {}'
|
||
(Cnoreturn cc-imenu-objc-generic-expression-noreturn-index)
|
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;; General function name regexp
|
||
(Cgeneralfunc cc-imenu-objc-generic-expression-general-func-index)
|
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;; Special case for definitions using phony prototype macros like:
|
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(Cproto cc-imenu-objc-generic-expression-proto-index)
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langnum
|
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;;
|
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(classcount 0)
|
||
toplist
|
||
str
|
||
str2
|
||
(intflen (length "@interface"))
|
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(implen (length "@implementation"))
|
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(prtlen (length "@protocol"))
|
||
(func
|
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;;
|
||
;; Does this emacs have buffer-substring-no-properties?
|
||
;;
|
||
(if (fboundp 'buffer-substring-no-properties)
|
||
'buffer-substring-no-properties
|
||
'buffer-substring)))
|
||
(goto-char (point-max))
|
||
;;
|
||
(while (re-search-backward cc-imenu-objc-generic-expression nil t)
|
||
(when (not (c-literal-limits))
|
||
(setq langnum (if (match-beginning OBJC)
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OBJC
|
||
(cond
|
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((match-beginning Cproto) Cproto)
|
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((match-beginning Cgeneralfunc) Cgeneralfunc)
|
||
((match-beginning Cnoreturn) Cnoreturn))))
|
||
(setq str (funcall func (match-beginning langnum) (match-end langnum)))
|
||
;;
|
||
(cond
|
||
;;
|
||
;; C
|
||
;;
|
||
((not (eq langnum OBJC))
|
||
(setq clist (cons (cons str (match-beginning langnum)) clist)))
|
||
;;
|
||
;; ObjC
|
||
;;
|
||
;; An instance Method
|
||
((eq (aref str 0) ?-)
|
||
(setq str (concat "-" (cc-imenu-objc-method-to-selector str)))
|
||
(setq methodlist (cons (cons str
|
||
(match-beginning langnum))
|
||
methodlist)))
|
||
;; A factory Method
|
||
((eq (aref str 0) ?+)
|
||
(setq str (concat "+" (cc-imenu-objc-method-to-selector str)))
|
||
(setq methodlist (cons (cons str
|
||
(match-beginning langnum))
|
||
methodlist)))
|
||
;; Interface or implementation or protocol
|
||
((eq (aref str 0) ?@)
|
||
(setq classcount (1+ classcount))
|
||
(cond
|
||
((and (> (length str) implen)
|
||
(string= (substring str 0 implen) "@implementation"))
|
||
(setq str (substring str implen)
|
||
str2 "@implementation"))
|
||
((string= (substring str 0 intflen) "@interface")
|
||
(setq str (substring str intflen)
|
||
str2 "@interface"))
|
||
((string= (substring str 0 prtlen) "@protocol")
|
||
(setq str (substring str prtlen)
|
||
str2 "@protocol")))
|
||
(setq str (cc-imenu-objc-remove-white-space str))
|
||
(setq methodlist (cons (cons str2
|
||
(match-beginning langnum))
|
||
methodlist))
|
||
(setq toplist (cons (cons str methodlist) toplist)
|
||
methodlist nil)))))
|
||
|
||
;; In this buffer, there is only one or zero @{interface|implementation|protocol}.
|
||
(if (< classcount 2)
|
||
(let ((classname (car (car toplist)))
|
||
(p (cdr (car (cdr (car toplist)))))
|
||
last)
|
||
(setq toplist (cons (cons classname p) (cdr (cdr (car toplist)))))
|
||
;; Add C lang token
|
||
(if clist
|
||
(progn
|
||
(setq last toplist)
|
||
(while (cdr last)
|
||
(setq last (cdr last)))
|
||
(setcdr last clist))))
|
||
;; Add C lang tokens as a sub menu
|
||
(if clist
|
||
(setq toplist (cons (cons "C" clist) toplist))))
|
||
;;
|
||
toplist
|
||
))
|
||
|
||
;(defvar cc-imenu-pike-generic-expression
|
||
; ())
|
||
; FIXME: Please contribute one!
|
||
|
||
(defun cc-imenu-init (mode-generic-expression
|
||
&optional mode-create-index-function)
|
||
(setq imenu-generic-expression mode-generic-expression
|
||
imenu-case-fold-search nil)
|
||
(when mode-create-index-function
|
||
(setq imenu-create-index-function mode-create-index-function)))
|
||
|
||
|
||
(cc-provide 'cc-menus)
|
||
|
||
;; Local Variables:
|
||
;; indent-tabs-mode: t
|
||
;; tab-width: 8
|
||
;; End:
|
||
;;; cc-menus.el ends here
|