utils/emacs/tablegen-mode.el

   1 ;; Maintainer:  The LLVM team, http://llvm.org/
   2 ;; Description: Major mode for TableGen description files (part of LLVM project)
   3 ;; Updated:     2007-12-18
   4
   5 (require 'comint)
   6 (require 'custom)
   7 (require 'ansi-color)
   8
   9 ;; Create mode-specific tables.
  10 (defvar td-decorators-face 'td-decorators-face
  11   "Face method decorators.")
  12 (make-face 'td-decorators-face)
  13
  14 (defvar tablegen-font-lock-keywords
  15   (let ((kw (regexp-opt '("class" "defm" "def" "field" "include" "in"
  16                          "let" "multiclass")
  17                         'words))
  18         (type-kw (regexp-opt '("bit" "bits" "code" "dag" "int" "list" "string")
  19                              'words))
  20         )
  21     (list
  22      ;; Comments
  23 ;;     '("\/\/" . font-lock-comment-face)
  24      ;; Strings
  25      '("\"[^\"]+\"" . font-lock-string-face)
  26      ;; Hex constants
  27      '("\\<0x[0-9A-Fa-f]+\\>" . font-lock-preprocessor-face)
  28      ;; Binary constants
  29      '("\\<0b[01]+\\>" . font-lock-preprocessor-face)
  30      ;; Integer literals
  31      '("\\<[-]?[0-9]+\\>" . font-lock-preprocessor-face)
  32      ;; Floating point constants
  33      '("\\<[-+]?[0-9]+\.[0-9]*\([eE][-+]?[0-9]+\)?\\>" . font-lock-preprocessor-face)
  34
  35      '("^[ \t]*\\(@.+\\)" 1 'td-decorators-face)
  36      ;; Keywords
  37      (cons (concat kw "[ \n\t(]") 1)
  38
  39      ;; Type keywords
  40      (cons (concat type-kw "[ \n\t(]") 1)
  41      ))
  42   "Additional expressions to highlight in TableGen mode.")
  43 (put 'tablegen-mode 'font-lock-defaults '(tablegen-font-lock-keywords))
  44
  45 ;; ---------------------- Syntax table ---------------------------
  46 ;; Shamelessly ripped from jasmin.el
  47 ;; URL: http://www.neilvandyke.org/jasmin-emacs/jasmin.el
  48
  49 (defvar tablegen-mode-syntax-table nil
  50   "Syntax table used in `tablegen-mode' buffers.")
  51 (when (not tablegen-mode-syntax-table)
  52   (setq tablegen-mode-syntax-table (make-syntax-table))
  53   ;; whitespace (` ')
  54   (modify-syntax-entry ?\   " "      tablegen-mode-syntax-table)
  55   (modify-syntax-entry ?\t  " "      tablegen-mode-syntax-table)
  56   (modify-syntax-entry ?\r  " "      tablegen-mode-syntax-table)
  57   (modify-syntax-entry ?\n  " "      tablegen-mode-syntax-table)
  58   (modify-syntax-entry ?\f  " "      tablegen-mode-syntax-table)
  59   ;; word constituents (`w')
  60   (modify-syntax-entry ?\%  "w"      tablegen-mode-syntax-table)
  61   (modify-syntax-entry ?\_  "w"      tablegen-mode-syntax-table)
  62   ;; comments
  63   (modify-syntax-entry ?/   ". 124b" tablegen-mode-syntax-table)
  64   (modify-syntax-entry ?*   ". 23"   tablegen-mode-syntax-table)
  65   (modify-syntax-entry ?\n  "> b"    tablegen-mode-syntax-table)
  66   ;; open paren (`(')
  67   (modify-syntax-entry ?\(  "("      tablegen-mode-syntax-table)
  68   (modify-syntax-entry ?\[  "("      tablegen-mode-syntax-table)
  69   (modify-syntax-entry ?\{  "("      tablegen-mode-syntax-table)
  70   (modify-syntax-entry ?\<  "("      tablegen-mode-syntax-table)
  71   ;; close paren (`)')
  72   (modify-syntax-entry ?\)  ")"      tablegen-mode-syntax-table)
  73   (modify-syntax-entry ?\]  ")"      tablegen-mode-syntax-table)
  74   (modify-syntax-entry ?\}  ")"      tablegen-mode-syntax-table)
  75   (modify-syntax-entry ?\>  ")"      tablegen-mode-syntax-table)
  76   ;; string quote ('"')
  77   (modify-syntax-entry ?\"  "\""     tablegen-mode-syntax-table)
  78   )
  79
  80 ;; --------------------- Abbrev table -----------------------------
  81
  82 (defvar tablegen-mode-abbrev-table nil
  83   "Abbrev table used while in TableGen mode.")
  84 (define-abbrev-table 'tablegen-mode-abbrev-table ())
  85
  86 (defvar tablegen-mode-hook nil)
  87 (defvar tablegen-mode-map nil)   ; Create a mode-specific keymap.
  88
  89 (if (not tablegen-mode-map)
  90     ()  ; Do not change the keymap if it is already set up.
  91   (setq tablegen-mode-map (make-sparse-keymap))
  92   (define-key tablegen-mode-map "\t"  'tab-to-tab-stop)
  93   (define-key tablegen-mode-map "\es" 'center-line)
  94   (define-key tablegen-mode-map "\eS" 'center-paragraph))
  95
  96 (defun tablegen-mode ()
  97   "Major mode for editing TableGen description files.
  98   \\{tablegen-mode-map}
  99   Runs tablegen-mode-hook on startup."
 100   (interactive)
 101   (kill-all-local-variables)
 102   (use-local-map tablegen-mode-map)      ; Provides the local keymap.
 103   (make-local-variable 'font-lock-defaults)
 104   (setq major-mode 'tablegen-mode        ; This is how describe-mode
 105                                          ;   finds the doc string to print.
 106         mode-name             "TableGen" ; This name goes into the modeline.
 107         local-abbrev-table    tablegen-mode-abbrev-table
 108         font-lock-defaults    `(tablegen-font-lock-keywords)
 109         require-final-newline t
 110         )
 111
 112   (set-syntax-table tablegen-mode-syntax-table)
 113   (make-local-variable 'comment-start)
 114   (setq comment-start "//")
 115   (run-hooks 'tablegen-mode-hook))       ; Finally, this permits the user to
 116                                          ;   customize the mode with a hook.
 117
 118 ;; Associate .td files with tablegen-mode
 119 (setq auto-mode-alist (append '(("\\.td$" . tablegen-mode)) auto-mode-alist))
 120
 121 (provide 'tablegen-mode)
 122 ;; end of tablegen-mode.el