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394 lines
14 KiB
394 lines
14 KiB
;;; cmake-mode.el --- major-mode for editing CMake sources
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; Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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; file Copyright.txt or https://cmake.org/licensing for details.
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;------------------------------------------------------------------------------
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;;; Commentary:
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;; Provides syntax highlighting and indentation for CMakeLists.txt and
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;; *.cmake source files.
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;;
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;; Add this code to your .emacs file to use the mode:
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;;
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;; (setq load-path (cons (expand-file-name "/dir/with/cmake-mode") load-path))
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;; (require 'cmake-mode)
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;------------------------------------------------------------------------------
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;;; Code:
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;;
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;; cmake executable variable used to run cmake --help-command
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;; on commands in cmake-mode
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;;
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;; cmake-command-help Written by James Bigler
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;;
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(defcustom cmake-mode-cmake-executable "cmake"
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"*The name of the cmake executable.
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This can be either absolute or looked up in $PATH. You can also
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set the path with these commands:
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(setenv \"PATH\" (concat (getenv \"PATH\") \";C:\\\\Program Files\\\\CMake 2.8\\\\bin\"))
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(setenv \"PATH\" (concat (getenv \"PATH\") \":/usr/local/cmake/bin\"))"
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:type 'file
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:group 'cmake)
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;; Keywords
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(defconst cmake-keywords-block-open '("IF" "MACRO" "FOREACH" "ELSE" "ELSEIF" "WHILE" "FUNCTION"))
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(defconst cmake-keywords-block-close '("ENDIF" "ENDFOREACH" "ENDMACRO" "ELSE" "ELSEIF" "ENDWHILE" "ENDFUNCTION"))
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(defconst cmake-keywords
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(let ((kwds (append cmake-keywords-block-open cmake-keywords-block-close nil)))
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(delete-dups kwds)))
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;; Regular expressions used by line indentation function.
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;;
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(defconst cmake-regex-blank "^[ \t]*$")
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(defconst cmake-regex-comment "#.*")
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(defconst cmake-regex-paren-left "(")
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(defconst cmake-regex-paren-right ")")
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(defconst cmake-regex-argument-quoted
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(rx ?\" (* (or (not (any ?\" ?\\)) (and ?\\ anything))) ?\"))
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(defconst cmake-regex-argument-unquoted
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(rx (or (not (any space "()#\"\\\n")) (and ?\\ nonl))
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(* (or (not (any space "()#\\\n")) (and ?\\ nonl)))))
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(defconst cmake-regex-token
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(rx-to-string `(group (or (regexp ,cmake-regex-comment)
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?( ?)
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(regexp ,cmake-regex-argument-unquoted)
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(regexp ,cmake-regex-argument-quoted)))))
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(defconst cmake-regex-indented
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(rx-to-string `(and bol (* (group (or (regexp ,cmake-regex-token) (any space ?\n)))))))
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(defconst cmake-regex-block-open
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(rx-to-string `(and symbol-start (or ,@(append cmake-keywords-block-open
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(mapcar 'downcase cmake-keywords-block-open))) symbol-end)))
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(defconst cmake-regex-block-close
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(rx-to-string `(and symbol-start (or ,@(append cmake-keywords-block-close
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(mapcar 'downcase cmake-keywords-block-close))) symbol-end)))
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(defconst cmake-regex-close
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(rx-to-string `(and bol (* space) (regexp ,cmake-regex-block-close)
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(* space) (regexp ,cmake-regex-paren-left))))
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;------------------------------------------------------------------------------
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;; Line indentation helper functions
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(defun cmake-line-starts-inside-string ()
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"Determine whether the beginning of the current line is in a string."
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(save-excursion
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(beginning-of-line)
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(let ((parse-end (point)))
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(goto-char (point-min))
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(nth 3 (parse-partial-sexp (point) parse-end))
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)
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)
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)
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(defun cmake-find-last-indented-line ()
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"Move to the beginning of the last line that has meaningful indentation."
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(let ((point-start (point))
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region)
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(forward-line -1)
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(setq region (buffer-substring-no-properties (point) point-start))
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(while (and (not (bobp))
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(or (looking-at cmake-regex-blank)
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(cmake-line-starts-inside-string)
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(not (and (string-match cmake-regex-indented region)
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(= (length region) (match-end 0))))))
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(forward-line -1)
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(setq region (buffer-substring-no-properties (point) point-start))
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)
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)
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)
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;------------------------------------------------------------------------------
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;;
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;; Indentation increment.
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;;
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(defcustom cmake-tab-width 2
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"Number of columns to indent cmake blocks"
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:type 'integer
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:group 'cmake)
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;;
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;; Line indentation function.
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;;
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(defun cmake-indent ()
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"Indent current line as CMake code."
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(interactive)
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(unless (cmake-line-starts-inside-string)
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(if (bobp)
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(cmake-indent-line-to 0)
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(let (cur-indent)
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(save-excursion
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(beginning-of-line)
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(let ((point-start (point))
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(case-fold-search t) ;; case-insensitive
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token)
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; Search back for the last indented line.
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(cmake-find-last-indented-line)
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; Start with the indentation on this line.
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(setq cur-indent (current-indentation))
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; Search forward counting tokens that adjust indentation.
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(while (re-search-forward cmake-regex-token point-start t)
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(setq token (match-string 0))
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(when (or (string-match (concat "^" cmake-regex-paren-left "$") token)
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(and (string-match cmake-regex-block-open token)
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(looking-at (concat "[ \t]*" cmake-regex-paren-left))))
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(setq cur-indent (+ cur-indent cmake-tab-width)))
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(when (string-match (concat "^" cmake-regex-paren-right "$") token)
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(setq cur-indent (- cur-indent cmake-tab-width)))
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)
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(goto-char point-start)
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;; If next token closes the block, decrease indentation
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(when (looking-at cmake-regex-close)
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(setq cur-indent (- cur-indent cmake-tab-width))
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)
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)
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)
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; Indent this line by the amount selected.
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(cmake-indent-line-to (max cur-indent 0))
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)
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)
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)
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)
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(defun cmake-point-in-indendation ()
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(string-match "^[ \\t]*$" (buffer-substring (point-at-bol) (point))))
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(defun cmake-indent-line-to (column)
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"Indent the current line to COLUMN.
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If point is within the existing indentation it is moved to the end of
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the indentation. Otherwise it retains the same position on the line"
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(if (cmake-point-in-indendation)
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(indent-line-to column)
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(save-excursion (indent-line-to column))))
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;------------------------------------------------------------------------------
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;;
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;; Helper functions for buffer
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;;
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(defun cmake-unscreamify-buffer ()
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"Convert all CMake commands to lowercase in buffer."
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(interactive)
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(save-excursion
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(goto-char (point-min))
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(while (re-search-forward "^\\([ \t]*\\)\\_<\\(\\(?:\\w\\|\\s_\\)+\\)\\_>\\([ \t]*(\\)" nil t)
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(replace-match
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(concat
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(match-string 1)
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(downcase (match-string 2))
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(match-string 3))
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t))
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)
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)
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;------------------------------------------------------------------------------
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;;
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;; Keyword highlighting regex-to-face map.
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;;
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(defconst cmake-font-lock-keywords
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`((,(rx-to-string `(and symbol-start
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(or ,@cmake-keywords
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,@(mapcar #'downcase cmake-keywords))
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symbol-end))
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. font-lock-keyword-face)
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(,(rx symbol-start (group (+ (or word (syntax symbol)))) (* blank) ?\()
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1 font-lock-function-name-face)
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(,(rx "${" (group (+(any alnum "-_+/."))) "}")
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1 font-lock-variable-name-face t)
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)
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"Highlighting expressions for CMake mode.")
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;------------------------------------------------------------------------------
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;; Syntax table for this mode.
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(defvar cmake-mode-syntax-table nil
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"Syntax table for CMake mode.")
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(or cmake-mode-syntax-table
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(setq cmake-mode-syntax-table
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(let ((table (make-syntax-table)))
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(modify-syntax-entry ?\( "()" table)
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(modify-syntax-entry ?\) ")(" table)
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(modify-syntax-entry ?# "<" table)
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(modify-syntax-entry ?\n ">" table)
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(modify-syntax-entry ?$ "'" table)
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table)))
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;;
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;; User hook entry point.
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;;
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(defvar cmake-mode-hook nil)
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;------------------------------------------------------------------------------
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;; For compatibility with Emacs < 24
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(defalias 'cmake--parent-mode
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(if (fboundp 'prog-mode) 'prog-mode 'fundamental-mode))
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;;------------------------------------------------------------------------------
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;; Mode definition.
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;;
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;;;###autoload
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(define-derived-mode cmake-mode cmake--parent-mode "CMake"
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"Major mode for editing CMake source files."
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; Setup font-lock mode.
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(set (make-local-variable 'font-lock-defaults) '(cmake-font-lock-keywords))
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; Setup indentation function.
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(set (make-local-variable 'indent-line-function) 'cmake-indent)
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; Setup comment syntax.
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(set (make-local-variable 'comment-start) "#"))
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; Help mode starts here
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;;;###autoload
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(defun cmake-command-run (type &optional topic buffer)
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"Runs the command cmake with the arguments specified. The
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optional argument topic will be appended to the argument list."
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(interactive "s")
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(let* ((bufname (if buffer buffer (concat "*CMake" type (if topic "-") topic "*")))
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(buffer (if (get-buffer bufname) (get-buffer bufname) (generate-new-buffer bufname)))
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(command (concat cmake-mode-cmake-executable " " type " " topic))
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;; Turn of resizing of mini-windows for shell-command.
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(resize-mini-windows nil)
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)
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(shell-command command buffer)
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(save-selected-window
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(select-window (display-buffer buffer 'not-this-window))
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(cmake-mode)
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(read-only-mode 1))
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)
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)
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;;;###autoload
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(defun cmake-help-list-commands ()
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"Prints out a list of the cmake commands."
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(interactive)
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(cmake-command-run "--help-command-list")
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)
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(defvar cmake-commands '() "List of available topics for --help-command.")
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(defvar cmake-help-command-history nil "Command read history.")
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(defvar cmake-modules '() "List of available topics for --help-module.")
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(defvar cmake-help-module-history nil "Module read history.")
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(defvar cmake-variables '() "List of available topics for --help-variable.")
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(defvar cmake-help-variable-history nil "Variable read history.")
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(defvar cmake-properties '() "List of available topics for --help-property.")
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(defvar cmake-help-property-history nil "Property read history.")
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(defvar cmake-help-complete-history nil "Complete help read history.")
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(defvar cmake-string-to-list-symbol
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'(("command" cmake-commands cmake-help-command-history)
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("module" cmake-modules cmake-help-module-history)
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("variable" cmake-variables cmake-help-variable-history)
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("property" cmake-properties cmake-help-property-history)
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))
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(defun cmake-get-list (listname)
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"If the value of LISTVAR is nil, run cmake --help-LISTNAME-list
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and store the result as a list in LISTVAR."
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(let ((listvar (car (cdr (assoc listname cmake-string-to-list-symbol)))))
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(if (not (symbol-value listvar))
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(let ((temp-buffer-name "*CMake Temporary*"))
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(save-window-excursion
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(cmake-command-run (concat "--help-" listname "-list") nil temp-buffer-name)
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(with-current-buffer temp-buffer-name
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; FIXME: Ignore first line if it is "cmake version ..." from CMake < 3.0.
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(set listvar (split-string (buffer-substring-no-properties (point-min) (point-max)) "\n" t)))))
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(symbol-value listvar)
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))
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)
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(require 'thingatpt)
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(defun cmake-symbol-at-point ()
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(let ((symbol (symbol-at-point)))
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(and (not (null symbol))
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(symbol-name symbol))))
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(defun cmake-help-type (type)
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(let* ((default-entry (cmake-symbol-at-point))
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(history (car (cdr (cdr (assoc type cmake-string-to-list-symbol)))))
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(input (completing-read
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(format "CMake %s: " type) ; prompt
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(cmake-get-list type) ; completions
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nil ; predicate
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t ; require-match
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default-entry ; initial-input
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history
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)))
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(if (string= input "")
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(error "No argument given")
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input))
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)
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;;;###autoload
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(defun cmake-help-command ()
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"Prints out the help message for the command the cursor is on."
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(interactive)
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(cmake-command-run "--help-command" (cmake-help-type "command") "*CMake Help*"))
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;;;###autoload
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(defun cmake-help-module ()
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"Prints out the help message for the module the cursor is on."
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(interactive)
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(cmake-command-run "--help-module" (cmake-help-type "module") "*CMake Help*"))
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;;;###autoload
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(defun cmake-help-variable ()
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"Prints out the help message for the variable the cursor is on."
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(interactive)
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(cmake-command-run "--help-variable" (cmake-help-type "variable") "*CMake Help*"))
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;;;###autoload
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(defun cmake-help-property ()
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"Prints out the help message for the property the cursor is on."
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(interactive)
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(cmake-command-run "--help-property" (cmake-help-type "property") "*CMake Help*"))
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;;;###autoload
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(defun cmake-help ()
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"Queries for any of the four available help topics and prints out the approriate page."
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(interactive)
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(let* ((default-entry (cmake-symbol-at-point))
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(command-list (cmake-get-list "command"))
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(variable-list (cmake-get-list "variable"))
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(module-list (cmake-get-list "module"))
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(property-list (cmake-get-list "property"))
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(all-words (append command-list variable-list module-list property-list))
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(input (completing-read
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"CMake command/module/variable/property: " ; prompt
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all-words ; completions
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nil ; predicate
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t ; require-match
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default-entry ; initial-input
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'cmake-help-complete-history
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)))
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(if (string= input "")
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(error "No argument given")
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(if (member input command-list)
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(cmake-command-run "--help-command" input "*CMake Help*")
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(if (member input variable-list)
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(cmake-command-run "--help-variable" input "*CMake Help*")
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(if (member input module-list)
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(cmake-command-run "--help-module" input "*CMake Help*")
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(if (member input property-list)
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(cmake-command-run "--help-property" input "*CMake Help*")
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(error "Not a know help topic.") ; this really should not happen
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))))))
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)
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;;;###autoload
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(progn
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(add-to-list 'auto-mode-alist '("CMakeLists\\.txt\\'" . cmake-mode))
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(add-to-list 'auto-mode-alist '("\\.cmake\\'" . cmake-mode)))
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; This file provides cmake-mode.
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(provide 'cmake-mode)
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;;; cmake-mode.el ends here
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