--- gforth/gforth.el 1999/11/20 12:12:52 1.36 +++ gforth/gforth.el 2001/03/11 22:50:49 1.47 @@ -1,6 +1,6 @@ ;; Forth mode for Emacs -;; Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc. +;; Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc. ;; This file is part of Gforth. @@ -112,7 +112,7 @@ OBS! All words in forth-negatives must b (defvar forth-mode-syntax-table nil "Syntax table in use in Forth-mode buffers.") -(if (not forth-mode-syntax-table) +(if t;; (not forth-mode-syntax-table) (progn (setq forth-mode-syntax-table (make-syntax-table)) (let ((char 0)) @@ -123,8 +123,6 @@ OBS! All words in forth-negatives must b (modify-syntax-entry char "w" forth-mode-syntax-table) (setq char (1+ char)))) (modify-syntax-entry ?\" "\"" forth-mode-syntax-table) - (modify-syntax-entry ?\\ "<" forth-mode-syntax-table) - (modify-syntax-entry ?\n ">" forth-mode-syntax-table) )) ;I do not define '(' and ')' as comment delimiters, because emacs ;only supports one comment syntax (and a hack to accomodate C++); I @@ -138,6 +136,8 @@ OBS! All words in forth-negatives must b ;same character. we could use ' ' as first and '(' and '\' as second ;character. However this would fail for G\ comments. +;comment handling has been moved to syntactic font lock (david) + (defconst forth-indent-level 4 "Indentation of Forth statements.") @@ -163,7 +163,14 @@ OBS! All words in forth-negatives must b (make-local-variable 'comment-indent-hook) (setq comment-indent-hook 'forth-comment-indent) (make-local-variable 'parse-sexp-ignore-comments) - (setq parse-sexp-ignore-comments t)) + (setq parse-sexp-ignore-comments t) + (make-local-variable 'font-lock-defaults) + (setq font-lock-defaults '(forth-font-lock-keywords nil t nil nil + (font-lock-syntactic-keywords . forth-font-lock-syntactic-keywords))) +; (make-local-variable 'font-lock-syntactic-keywords) +; (setq font-lock-syntactic-keywords 'forth-font-lock-syntactic-keywords) +) + ;;;###autoload (defun forth-mode () @@ -241,7 +248,7 @@ Variables controling documentation searc ; (run-forth forth-program-name)) (run-hooks 'forth-mode-hook)) -(setq forth-mode-hook +(add-hook 'forth-mode-hook '(lambda () (make-local-variable 'compile-command) (setq compile-command "gforth "))) @@ -990,5 +997,96 @@ The region is sent terminated by a newli ; (define-key global-map '(shift button3) 'mouse-function-menu) )) -;; end +;;; Font lock code (david ) +;;; +;;; note that words which contain a closing paren, which have the comment-ender +;;; syntactic class, won't be matched by `\w+' and `\<' and `\>' won't work +;;; either; solution: use of `\S-' and `\s-' where necessary +;;; +(defvar forth-bracket-keyword nil) +(defvar forth-syntactic-keywords nil) +(defvar forth-variable-defining-words nil) +(defvar forth-function-defining-words nil) +(defvar forth-function-parsing-words nil) +(defvar forth-variable-parsing-words nil) +(defvar forth-word-string-parsing-words nil) +(defvar forth-type-defining-words nil) +(defvar forth-font-lock-keywords nil) + +(setq forth-bracket-keywords + '("[if]" "[ifdef]" "[ifundef]" "[else]" "[then]" "[?do]" "[do]" "[for]" + "[loop]" "[+loop]" "[next]" "[begin]" "[until]" "[again]" "[while]" + "[repeat]")) +(setq forth-syntactic-keywords + '("if" "else" "then" "case" "endcase" "of" "endof" "begin" "while" + "repeat" "until" "again" "does>" "?do" "do" "+loop" "unloop" "loop" + "exit" "u+do" "-do" "u-do" "-loop" "u+do" "for" "next" "cs-roll" + "cs-pick" "recurse" "?dup-if" "?dup-0=-if" "leave" "?leave" "done" + ";" ":noname" "immediate" "restrict" "compile-only" "interpretation>" + "" "")) +(setq forth-variable-parsing-words + '("[TO]" "TO" "")) +(setq forth-word-string-parsing-words + '("[CHAR]" "CHAR" "include" "require" "needs")) +(setq forth-type-defining-words + '("end-struct")) + +(defun forth-make-words-regexp (word-list) + (concat "\\<" (regexp-opt word-list t) "\\>")) +(defun forth-make-parsing-words-regexp (word-list) + (concat "\\<" (regexp-opt word-list t) "\\s-+\\(\\S-+\\)")) +(defun forth-make-parsing-words-matcher (word-list word-face parsed-face) + (let ((regexp (forth-make-parsing-words-regexp word-list))) + (list regexp (list 1 word-face) + (list (regexp-opt-depth regexp) parsed-face)) + )) + +(setq forth-font-lock-keywords + (list + (forth-make-parsing-words-matcher forth-function-defining-words + font-lock-keyword-face font-lock-function-name-face) + (forth-make-parsing-words-matcher forth-variable-defining-words + font-lock-type-face font-lock-variable-name-face) + (forth-make-parsing-words-matcher forth-type-defining-words + font-lock-keyword-face font-lock-type-face) + (forth-make-parsing-words-matcher forth-function-parsing-words + font-lock-keyword-face font-lock-function-name-face) + (forth-make-parsing-words-matcher forth-variable-parsing-words + font-lock-keyword-face font-lock-variable-name-face) + (forth-make-parsing-words-matcher forth-word-string-parsing-words + font-lock-keyword-face font-lock-string-face) + (list (forth-make-words-regexp forth-bracket-keywords) + 0 font-lock-keyword-face) + (list (forth-make-words-regexp forth-syntactic-keywords) + 0 font-lock-keyword-face) +; '("\\<\\({\\)\\(\\([ \t]+-?[^- \t}\n]*\\>\\)*\\)\\([^}\n]*\\)\\(}\\)?" +; (1 font-lock-keyword-face) (2 font-lock-variable-name-face) +; (4 font-lock-comment-face) (5 font-lock-keyword-face nil t)) + '("\\<-?[0-9][0-9a-f]*\\>" . font-lock-constant-face) + '("\\<[^ \t\n%]+%" . font-lock-type-face) + )) + +;; Syntactic highlighting is used for getting Forth comments highlighted +;; properly: `\' and `\g' comments are handled with a single regular +;; expression that parses from `\' to end of line and assigns the +;; "comment-fence" generic comment delimiter to the backslash and end-of-line +;; characters. +;; `( ... )' comments are handled by the usual comment-starter/comment-ender +;; syntax classes, with the extension that `(' must be a single word. +;; +(defvar forth-font-lock-syntactic-keywords nil) +(setq forth-font-lock-syntactic-keywords + '(("\\<\\(\\(\\\\\\)g?\\)\\>.*\\(\n\\)" (2 (14 . nil)) (3 (14 . nil))) + ("\\<(\\>" 0 (11 . nil)) + (")" 0 (12 . nil)))) + +;;; End font lock code