970 lines
32 KiB
EmacsLisp
970 lines
32 KiB
EmacsLisp
;;; factor-mode.el --- Major mode for editing Factor programs.
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;; Copyright (C) 2013 Erik Charlebois
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;; Copyright (C) 2008, 2009, 2010 Jose Antonio Ortega Ruiz
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;; See http://factorcode.org/license.txt for BSD license.
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;; Maintainer: Erik Charlebois <erikcharlebois@gmail.com>
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;; Author: Jose Antonio Ortega Ruiz <jao@gnu.org>
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;; Keywords: languages, factor
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;; Start date: Tue Dec 02, 2008 21:32
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;;; Commentary:
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;; A major mode for editing Factor programs. It provides indenting and
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;; font-lock support.
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;;; Code:
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(require 'thingatpt)
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(require 'font-lock)
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(require 'ring)
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(require 'fuel-base)
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;;; Customization:
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;;;###autoload
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(defgroup factor nil
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"Major mode for Factor source code."
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:group 'languages)
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(defcustom factor-cycling-no-ask nil
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"Whether to never create source/doc/tests file when cycling."
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:type 'boolean
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:group 'factor)
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(defcustom factor-cycle-always-ask-p t
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"Whether to always ask for file creation when cycling to a
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source/docs/tests file. When set to false, you'll be asked only once."
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:type 'boolean
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:group 'factor)
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(defcustom factor-indent-level 4
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"Indentation of Factor statements."
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:type 'integer
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:safe 'integerp
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:group 'factor)
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(defcustom factor-comment-column 32
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"Indentation column of comments."
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:type 'integer
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:safe 'integerp
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:group 'factor)
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(defcustom factor-mode-use-fuel t
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"Whether to use the full FUEL facilities in factor mode.
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Set this variable to nil if you just want to use Emacs as the
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external editor of your Factor environment, e.g., by putting
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these lines in your .emacs:
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(add-to-list 'load-path \"/path/to/factor/misc/fuel\")
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(setq factor-mode-use-fuel nil)
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(require 'factor-mode)
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"
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:type 'boolean
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:group 'factor)
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;;; Faces:
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;;;###autoload
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(defgroup factor-faces nil
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"Faces used by factor-mode."
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:group 'factor
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:group 'faces)
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(defface factor-font-lock-constructor '((t (:inherit font-lock-type-face)))
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"Factor for constructor words."
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:group 'factor-faces
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:group 'faces)
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(defface factor-font-lock-constant '((t (:inherit font-lock-constant-face)))
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"Face for constant and literal values."
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:group 'factor-faces
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:group 'faces)
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(defface factor-font-lock-number '((t (:inherit font-lock-constant-face)))
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"Face for integer and floating-point constants."
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:group 'factor-faces
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:group 'faces)
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(defface factor-font-lock-ratio '((t (:inherit font-lock-constant-face)))
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"Face for ratio constants."
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:group 'factor-faces
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:group 'faces)
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(defface factor-font-lock-declaration '((t (:inherit font-lock-keyword-face)))
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"declaration words"
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:group 'factor-faces
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:group 'faces)
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(defface factor-font-lock-ebnf-form '((t (:inherit font-lock-constant-face)))
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"EBNF: ... ;EBNF form"
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:group 'factor-faces
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:group 'faces)
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(defface factor-font-lock-error-form '((t (:inherit font-lock-warning-face)))
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"ERROR: ... ; form"
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:group 'factor-faces
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:group 'faces)
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(defface factor-font-lock-parsing-word '((t (:inherit font-lock-keyword-face)))
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"parsing words"
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:group 'factor-faces
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:group 'faces)
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(defface factor-font-lock-postpone-body '((t (:inherit font-lock-comment-face)))
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"postponed form"
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:group 'factor-faces
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:group 'faces)
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(defface factor-font-lock-setter-word
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'((t (:inherit font-lock-function-name-face)))
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"setter words (>>foo)"
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:group 'factor-faces
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:group 'faces)
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(defface factor-font-lock-getter-word
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'((t (:inherit font-lock-function-name-face)))
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"getter words (foo>>)"
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:group 'factor-faces
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:group 'faces)
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(defface factor-font-lock-string '((t (:inherit font-lock-string-face)))
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"strings"
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:group 'factor-faces
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:group 'faces)
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(defface factor-font-lock-symbol '((t (:inherit font-lock-variable-name-face)))
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"name of symbol being defined"
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:group 'factor-faces
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:group 'faces)
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(defface factor-font-lock-type-name '((t (:inherit font-lock-type-face)))
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"type names"
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:group 'factor-faces
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:group 'faces)
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(defface factor-font-lock-vocabulary-name
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'((t (:inherit font-lock-constant-face)))
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"vocabulary names"
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:group 'factor-faces
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:group 'faces)
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(defface factor-font-lock-word
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'((t (:inherit font-lock-function-name-face)))
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"Face for the word, generic or method being defined."
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:group 'factor-faces
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:group 'faces)
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(defface factor-font-lock-invalid-syntax
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'((t (:inherit font-lock-warning-face)))
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"syntactically invalid constructs"
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:group 'factor-faces
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:group 'faces)
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(defface factor-font-lock-comment '((t (:inherit font-lock-comment-face)))
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"Face for Factor comments."
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:group 'factor-faces
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:group 'faces)
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(defface factor-font-lock-stack-effect '((t :inherit font-lock-comment-face))
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"Face for Factor stack effect declarations."
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:group 'factor-faces
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:group 'faces)
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(defface factor-font-lock-type-in-stack-effect '((t :inherit font-lock-comment-face
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:bold t))
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"Face for Factor types in stack effect declarations."
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:group 'factor-faces
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:group 'faces)
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;;; Thing-at-point:
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(defun factor-beginning-of-symbol ()
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"Move point to the beginning of the current symbol."
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(skip-syntax-backward "w_()"))
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(defun factor-end-of-symbol ()
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"Move point to the end of the current symbol."
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(skip-syntax-forward "w_()"))
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(put 'factor-symbol 'end-op 'factor-end-of-symbol)
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(put 'factor-symbol 'beginning-op 'factor-beginning-of-symbol)
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(defsubst factor-symbol-at-point ()
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(let* ((thing (thing-at-point 'factor-symbol))
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(s (when thing (substring-no-properties thing))))
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(and (> (length s) 0) s)))
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;;; Regexps galore:
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;; Utility regexp used by other regexps to match a Factor symbol name
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(setq-local symbol "\\(\\(?:\\sw\\|\\s_\\)+\\)")
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;; Used to font-lock stack effect declarations with may be nested.
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(defun factor-match-brackets (limit)
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(let ((start (point)))
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(when (re-search-forward "[ \n]([ \n]" limit t)
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(backward-char 2)
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(let ((bracket-start (point)))
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(when (condition-case nil
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(progn (forward-sexp) 't)
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('scan-error nil))
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(let ((bracket-stop (point)))
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(goto-char bracket-start)
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(re-search-forward ".+" bracket-stop 'mv)))))))
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;; Excludes parsing words that are handled by other regexps
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(defconst factor-parsing-words
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'(":" "::" ";" "&:" "<<" "<PRIVATE" ">>"
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"ABOUT:" "AFTER:" "ALIAS:" "ALIEN:" "ARTICLE:"
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"B" "BEFORE:"
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"C:" "C-GLOBAL:" "C-TYPE:" "CHAR:" "COLOR:" "COM-INTERFACE:" "CONSTANT:"
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"CONSULT:" "call-next-method"
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"DEFER:"
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"EBNF:" ";EBNF" "ENUM:" "ERROR:"
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"FOREIGN-ATOMIC-TYPE:" "FOREIGN-ENUM-TYPE:" "FOREIGN-RECORD-TYPE:" "FUNCTION-ALIAS:"
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"GAME:" "GENERIC#" "GENERIC:" "GIR:"
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"GLSL-SHADER:" "GLSL-PROGRAM:"
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"HINTS:" "HOOK:"
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"IN:" "initial:" "INSTANCE:" "INTERSECTION:" "IMPLEMENT-STRUCTS:"
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"M:" "M::" "MACRO:" "MACRO::" "MAIN:" "MATH:"
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"MEMO:" "MEMO:" "METHOD:" "MIXIN:"
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"NAN:"
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"POSTPONE:" "PRIMITIVE:" "PRIVATE>" "PROTOCOL:" "PROVIDE:"
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"QUALIFIED-WITH:" "QUALIFIED:"
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"read-only" "RENAME:" "REQUIRE:" "REQUIRES:"
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"SINGLETON:" "SINGLETONS:" "SLOT:" "SPECIALIZED-ARRAY:"
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"SPECIALIZED-ARRAYS:" "STRING:" "SYNTAX:"
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"TYPEDEF:" "TYPED:" "TYPED::"
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"UNIFORM-TUPLE:" "UNION:" "USE:"
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"VARIANT:" "VERTEX-FORMAT:"))
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(defconst factor-parsing-words-regex
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(regexp-opt factor-parsing-words 'symbols))
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(defconst factor-constant-words
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'("f" "t"))
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(defconst factor-constant-words-regex
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(regexp-opt factor-constant-words 'symbols))
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(defconst factor-bracer-words
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'("B" "BV" "C" "CS" "H" "T" "V" "W"))
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(defconst factor-brace-words-regex
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(format "%s{" (regexp-opt factor-bracer-words t)))
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(defconst factor-declaration-words
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'("deprecated"
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"flushable"
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"foldable"
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"inline"
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"parsing"
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"recursive"
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"delimiter"))
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(defconst factor-declaration-words-regex
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(regexp-opt factor-declaration-words 'symbols))
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(defsubst factor-second-word-regex (prefixes)
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(format "%s +\\([^ \r\n]+\\)" (regexp-opt prefixes t)))
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(defconst factor-method-definition-regex
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"^M::? +\\([^ ]+\\) +\\([^ ]+\\)")
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(defconst factor-before-definition-regex
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"^BEFORE: +\\([^ ]+\\) +\\([^ ]+\\)")
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(defconst factor-after-definition-regex
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"^AFTER: +\\([^ ]+\\) +\\([^ ]+\\)")
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(defconst factor-integer-regex
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"\\_<-?\\(0[xob][0-9a-fA-F]+\\|[0-9]+\\)\\_>")
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(defconst factor-raw-float-regex
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"[0-9]*\\.[0-9]*\\([eEpP][+-]?[0-9]+\\)?")
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(defconst factor-float-regex
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(format "\\_<-?%s\\_>" factor-raw-float-regex))
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(defconst factor-number-regex
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(format "\\([0-9]+\\|%s\\)" factor-raw-float-regex))
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(defconst factor-ratio-regex
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(format "\\_<[+-]?%s/-?%s\\_>" factor-number-regex factor-number-regex))
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(defconst factor-bad-string-regex
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"\\_<\"[^>]\\([^\"\n]\\|\\\\\"\\)*\n")
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(defconst factor-word-definition-regex
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(format "\\_<\\(%s\\)?[:#] +\\(%s\\)"
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(regexp-opt
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'(":" "GENERIC" "DEFER" "HOOK" "MACRO" "MAIN" "MATH" "POSTPONE"
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"SYNTAX" "TYPED" "TYPED:" "RENAME"))
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"\\(\\sw\\|\\s_\\|\\s(\\|\\s)\\)+"))
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(defconst factor-alias-definition-regex
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"^ALIAS: +\\(\\_<.+?\\_>\\) +\\(\\_<.+?\\_>\\)")
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;; Vocabulary patterns
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(defconst factor-vocab-ref-regex
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(factor-second-word-regex
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'("IN:" "USE:" "EXCLUDE:" "QUALIFIED:" "QUALIFIED-WITH:")))
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(defconst factor-using-lines-regex "^\\(USING:\\)[ \n]+\\([^;\t]*\\);")
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;; Symbols
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(defconst factor-symbol-definition-regex
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(factor-second-word-regex
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'("&:" "CONSTANT:" "DESTRUCTOR:" "FORGET:" "HELP:" "LIBRARY:"
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"SYMBOL:" "VAR:")))
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(defconst factor-symbols-lines-regex "^\\(SYMBOLS\\):[ \n]+\\([^;\t]*\\);")
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(defconst factor-int-constant-def-regex
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(factor-second-word-regex '("ALIEN:" "CHAR:" "NAN:")))
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(defconst factor-type-definition-regex
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(factor-second-word-regex
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'("C-STRUCT:" "C-UNION:" "COM-INTERFACE:" "MIXIN:" "SINGLETON:"
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"SPECIALIZED-ARRAY:" "STRUCT:" "UNION:" "UNION-STRUCT:")))
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(defconst factor-error-regex
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(factor-second-word-regex '("ERROR:")))
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(defconst factor-constructor-regex
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"<[^ >]+>")
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(defconst factor-getter-regex
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"\\_<\\(?:\\sw\\|\\s_\\)+>>\\_>")
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(defconst factor-setter-regex
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"\\_<>>\\(?:\\sw\\|\\s_\\)+\\_>")
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(defconst factor-stack-effect-regex
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"\\( ( [^)]* )\\)\\|\\( (( [^)]* ))\\)")
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(defconst factor-use-line-regex "^USE: +\\(.*\\)$")
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(defconst factor-current-vocab-regex "^IN: +\\([^ \r\n\f]+\\)")
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(defconst factor-sub-vocab-regex "^<\\([^ \n]+\\) *$")
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(defconst factor-indent-def-starts
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'("" ":"
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"AFTER" "BEFORE"
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"COM-INTERFACE" "CONSULT"
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"ENUM" "ERROR"
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"FROM" "FUNCTION:" "FUNCTION-ALIAS:"
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"INTERSECTION:"
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"M" "M:" "MACRO" "MACRO:"
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"MEMO" "MEMO:" "METHOD"
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"SYNTAX"
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"PREDICATE" "PRIMITIVE" "PROTOCOL"
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"SINGLETONS"
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"STRUCT" "SYMBOLS" "TAG" "TUPLE"
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"TYPED" "TYPED:"
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"UNIFORM-TUPLE"
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"UNION-STRUCT" "UNION"
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"VARIANT" "VERTEX-FORMAT"))
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(defconst factor-no-indent-def-starts
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'("ARTICLE" "HELP" "SPECIALIZED-ARRAYS"))
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(defconst factor-indent-def-start-regex
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(format "^\\(%s:\\)\\( \\|\n\\)" (regexp-opt factor-indent-def-starts)))
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(defconst factor-definition-start-regex
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(format "^\\(%s:\\) " (regexp-opt (append factor-no-indent-def-starts
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factor-indent-def-starts))))
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(defconst factor-definition-end-regex
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(format "\\(\\(^\\| +\\);\\( *%s\\)*\\($\\| +\\)\\)"
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factor-declaration-words-regex))
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(defconst factor-single-liner-regex
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(regexp-opt '("ABOUT:"
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"ALIAS:"
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"CONSTANT:" "C:" "C-GLOBAL:" "C-TYPE:"
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"DEFER:" "DESTRUCTOR:"
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"FORGET:"
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"GAME:" "GENERIC:" "GENERIC#" "GLSL-PROGRAM:"
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"HOOK:"
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"IN:" "INSTANCE:"
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"LIBRARY:"
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"MAIN:" "MATH:" "MIXIN:"
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"NAN:"
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"POSTPONE:" "PRIVATE>" "<PRIVATE"
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"QUALIFIED-WITH:" "QUALIFIED:"
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"RENAME:"
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"SINGLETON:" "SLOT:" "SPECIALIZED-ARRAY:"
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"TYPEDEF:"
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"USE:")))
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(defconst factor-begin-of-def-regex
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(format "^USING: \\|\\(%s\\)\\|\\(^%s .*\\)"
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factor-definition-start-regex
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factor-single-liner-regex))
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(defconst factor-end-of-def-line-regex
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(format "^.*%s" factor-definition-end-regex))
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(defconst factor-end-of-def-regex
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(format "\\(%s\\)\\|\\(^%s .*\\)"
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factor-end-of-def-line-regex
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factor-single-liner-regex))
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(defconst factor-word-signature-regex
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(format ":[^ ]* \\([^ ]+\\)\\(%s\\)*" factor-stack-effect-regex))
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(defconst factor-defun-signature-regex
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(format "\\(%s\\|%s\\)"
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factor-word-signature-regex
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"M[^:]*: [^ ]+ [^ ]+"))
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(defconst factor-constructor-decl-regex
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"\\_<C: +\\(\\w+\\) +\\(\\w+\\)\\( .*\\)?$")
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(defconst factor-typedef-regex
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(format "\\_<TYPEDEF: +%s +%s\\( .*\\)?$" symbol symbol))
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(defconst factor-c-global-regex
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(format "\\_<C-GLOBAL: +%s +%s\\( .*\\)?$" symbol symbol))
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(defconst factor-c-type-regex
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(format "\\_<C-TYPE: +%s\\( .*\\)?$" symbol))
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(defconst factor-rename-regex
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(format "\\_<RENAME: +%s +%s +=> +%s\\( .*\\)?$" symbol symbol symbol))
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;;; Font lock:
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(defconst factor-font-lock-keywords
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`((,factor-brace-words-regex 1 'factor-font-lock-parsing-word)
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(,factor-vocab-ref-regex 2 'factor-font-lock-vocabulary-name)
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(,factor-using-lines-regex (1 'factor-font-lock-parsing-word)
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(2 'factor-font-lock-vocabulary-name))
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(,factor-symbols-lines-regex (1 'factor-font-lock-parsing-word)
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(2 'factor-font-lock-word))
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(,(format "^\\(FROM\\|EXCLUDE\\):[ \n]+%s[ \n]+=>+\\([^;\t]*\\);" symbol)
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(1 'factor-font-lock-parsing-word)
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(2 'factor-font-lock-vocabulary-name)
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(3 'factor-font-lock-word))
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(,factor-constructor-decl-regex
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(1 'factor-font-lock-word)
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(2 'factor-font-lock-type-name)
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(3 'factor-font-lock-invalid-syntax nil t))
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(,factor-typedef-regex (1 'factor-font-lock-type-name)
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(2 'factor-font-lock-type-name)
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(3 'factor-font-lock-invalid-syntax nil t))
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(,factor-c-global-regex (1 'factor-font-lock-type-name)
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(2 'factor-font-lock-word)
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(3 'factor-font-lock-invalid-syntax nil t))
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(,factor-c-type-regex (1 'factor-font-lock-type-name)
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(2 'factor-font-lock-invalid-syntax nil t))
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(,factor-rename-regex (1 'factor-font-lock-word)
|
||
(2 'factor-font-lock-vocabulary-name)
|
||
(3 'factor-font-lock-word)
|
||
(4 'factor-font-lock-invalid-syntax nil t))
|
||
(,factor-declaration-words-regex . 'factor-font-lock-comment)
|
||
(,factor-word-definition-regex 2 'factor-font-lock-word)
|
||
(,factor-alias-definition-regex (1 'factor-font-lock-word)
|
||
(2 'factor-font-lock-word))
|
||
(,factor-int-constant-def-regex 2 'factor-font-lock-constant)
|
||
(,factor-integer-regex . 'factor-font-lock-number)
|
||
(,factor-float-regex . 'factor-font-lock-number)
|
||
(,factor-ratio-regex . 'factor-font-lock-ratio)
|
||
(,factor-type-definition-regex 2 'factor-font-lock-type-name)
|
||
(,factor-error-regex 2 'factor-font-lock-error-form)
|
||
(,factor-method-definition-regex (1 'factor-font-lock-type-name)
|
||
(2 'factor-font-lock-word))
|
||
(,factor-before-definition-regex (1 'factor-font-lock-type-name)
|
||
(2 'factor-font-lock-word))
|
||
(,factor-after-definition-regex (1 'factor-font-lock-type-name)
|
||
(2 'factor-font-lock-word))
|
||
|
||
;; Highlights tuple and struct definitions. The TUPLE/STRUCT
|
||
;; parsing word, class name and optional parent classes are
|
||
;; matched in three groups. Then the text up until the end of the
|
||
;; definition that is terminated with ";" is searched for words
|
||
;; that are slot names which are highlighted with the face
|
||
;; factor-font-lock-symbol.
|
||
(,(format
|
||
"\\(%s\\):[ \n]+%s\\(?:[ \n]+<[ \n]+%s\\)?"
|
||
(regexp-opt '("ENUM" "PROTOCOL" "STRUCT" "TUPLE" "UNION-STRUCT"))
|
||
symbol
|
||
symbol)
|
||
(1 'factor-font-lock-parsing-word)
|
||
(2 'factor-font-lock-type-name)
|
||
(3 'factor-font-lock-type-name nil t)
|
||
;; A slot is either a single symbol or a sequence along the
|
||
;; lines: { foo initial: "bar }
|
||
("\\(\\(?:\\sw\\|\\s_\\)+\\)\\|\\(?:{[ \n]+\\(\\(?:\\sw\\|\\s_\\)+\\)[^}]+\\)"
|
||
(factor-find-end-of-def)
|
||
nil
|
||
(1 'factor-font-lock-symbol nil t)
|
||
(2 'factor-font-lock-symbol nil t)))
|
||
;; Highlights predicates
|
||
(,(format "\\(PREDICATE\\):[ \n]%s[ \n]<[ \n]%s" symbol symbol)
|
||
(1 'factor-font-lock-parsing-word)
|
||
(2 'factor-font-lock-type-name)
|
||
(3 'factor-font-lock-type-name))
|
||
;; Highlights alien function definitions. Types in stack effect
|
||
;; declarations are given a bold face.
|
||
(,(format "\\(\\(?:GL-\\)?FUNCTION\\|CALLBACK\\):[ \n]+%s[ \n]+%s[ \n]+" symbol symbol)
|
||
(1 'factor-font-lock-parsing-word)
|
||
(2 'factor-font-lock-type-name)
|
||
(3 'factor-font-lock-word)
|
||
;; Regexp from hell that puts every type name in the first group,
|
||
;; names and brackets in the second and third.
|
||
("\\(?:\\(\\(?:\\sw\\|\\s_\\)+\\)[ \n]+\\(\\(?:\\sw\\|\\s_\\)+,?\\(?:[ \n]+)\\)?\\)\\|\\([()]\\)\\)"
|
||
(factor-find-end-of-def)
|
||
nil
|
||
(1 'factor-font-lock-type-in-stack-effect nil t)
|
||
(2 'factor-font-lock-stack-effect nil t)
|
||
(3 'factor-font-lock-stack-effect nil t)))
|
||
|
||
;; Almost identical to the previous one, but for function aliases.
|
||
(,(format "\\(FUNCTION-ALIAS\\):[ \n]+%s[ \n]+%s[ \n]+%s[ \n]+"
|
||
symbol symbol symbol)
|
||
(1 'factor-font-lock-parsing-word)
|
||
(2 'factor-font-lock-word)
|
||
(3 'factor-font-lock-type-name)
|
||
(4 'factor-font-lock-word)
|
||
("\\(?:\\(\\(?:\\sw\\|\\s_\\)+\\)[ \n]+\\(\\(?:\\sw\\|\\s_\\)+,?\\(?:[ \n]+)\\)?\\)\\|\\([()]\\)\\)"
|
||
(factor-find-end-of-def)
|
||
nil
|
||
(1 'factor-font-lock-type-in-stack-effect nil t)
|
||
(2 'factor-font-lock-stack-effect nil t)
|
||
(3 'factor-font-lock-stack-effect nil t)))
|
||
(factor-match-brackets . 'factor-font-lock-stack-effect)
|
||
(,factor-constructor-regex . 'factor-font-lock-constructor)
|
||
(,factor-setter-regex . 'factor-font-lock-setter-word)
|
||
(,factor-getter-regex . 'factor-font-lock-getter-word)
|
||
(,factor-symbol-definition-regex (1 'factor-font-lock-parsing-word)
|
||
(2 'factor-font-lock-word))
|
||
(,factor-bad-string-regex . 'factor-font-lock-invalid-syntax)
|
||
("\\_<\\(P\\|SBUF\\|DLL\\)\"" 1 'factor-font-lock-parsing-word)
|
||
(,factor-constant-words-regex . 'factor-font-lock-constant)
|
||
(,factor-parsing-words-regex . 'factor-font-lock-parsing-word)
|
||
(,"\t" . 'whitespace-highlight-face)))
|
||
|
||
;; Handling of multi-line constructs
|
||
(defun factor-font-lock-extend-region ()
|
||
(eval-when-compile (defvar font-lock-beg) (defvar font-lock-end))
|
||
(save-excursion
|
||
(goto-char font-lock-beg)
|
||
(let ((found (or (re-search-backward "\n\n" nil t) (point-min))))
|
||
(goto-char font-lock-end)
|
||
(when (re-search-forward "\n\n" nil t)
|
||
(beginning-of-line)
|
||
(setq font-lock-end (point)))
|
||
(setq font-lock-beg found))))
|
||
|
||
;;; Source code analysis:
|
||
|
||
(defsubst factor-brackets-depth ()
|
||
(nth 0 (syntax-ppss)))
|
||
|
||
(defsubst factor-brackets-start ()
|
||
(nth 1 (syntax-ppss)))
|
||
|
||
(defun factor-brackets-end ()
|
||
(save-excursion
|
||
(goto-char (factor-brackets-start))
|
||
(condition-case nil
|
||
(progn (forward-sexp)
|
||
(1- (point)))
|
||
(error -1))))
|
||
|
||
(defsubst factor-indentation-at (pos)
|
||
(save-excursion (goto-char pos) (current-indentation)))
|
||
|
||
(defsubst factor-at-begin-of-def ()
|
||
(looking-at factor-begin-of-def-regex))
|
||
|
||
(defsubst factor-at-begin-of-indent-def ()
|
||
(looking-at factor-indent-def-start-regex))
|
||
|
||
(defsubst factor-at-end-of-def ()
|
||
(looking-at factor-end-of-def-regex))
|
||
|
||
(defsubst factor-looking-at-emptiness ()
|
||
(looking-at "^[ ]*$\\|$"))
|
||
|
||
(defsubst factor-is-last-char (pos)
|
||
(save-excursion
|
||
(goto-char (1+ pos))
|
||
(looking-at-p "[ ]*$")))
|
||
|
||
(defsubst factor-line-offset (pos)
|
||
(- pos (save-excursion
|
||
(goto-char pos)
|
||
(beginning-of-line)
|
||
(point))))
|
||
|
||
(defun factor-previous-non-blank ()
|
||
(forward-line -1)
|
||
(while (and (not (bobp)) (factor-looking-at-emptiness))
|
||
(forward-line -1)))
|
||
|
||
(defsubst factor-beginning-of-defun (&optional times)
|
||
(re-search-backward factor-begin-of-def-regex nil t times))
|
||
|
||
(defsubst factor-end-of-defun ()
|
||
(re-search-forward factor-end-of-def-regex nil t))
|
||
|
||
(defun factor-beginning-of-block-pos ()
|
||
(save-excursion
|
||
(if (> (factor-brackets-depth) 0)
|
||
(factor-brackets-start)
|
||
(factor-beginning-of-defun)
|
||
(point))))
|
||
|
||
(defun factor-at-setter-line ()
|
||
(save-excursion
|
||
(beginning-of-line)
|
||
(when (re-search-forward factor-setter-regex
|
||
(line-end-position)
|
||
t)
|
||
(let* ((to (match-beginning 0))
|
||
(from (factor-beginning-of-block-pos)))
|
||
(goto-char from)
|
||
(let ((depth (factor-brackets-depth)))
|
||
(and (or (re-search-forward factor-constructor-regex to t)
|
||
(re-search-forward factor-setter-regex to t))
|
||
(= depth (factor-brackets-depth))))))))
|
||
|
||
(defun factor-at-constructor-line ()
|
||
(save-excursion
|
||
(beginning-of-line)
|
||
(re-search-forward factor-constructor-regex (line-end-position) t)))
|
||
|
||
(defun factor-on-vocab ()
|
||
"t if point is on a vocab name. We just piggyback on
|
||
font-lock's pretty accurate information."
|
||
(eq (get-char-property (point) 'face) 'factor-font-lock-vocabulary-name))
|
||
|
||
(defsubst factor-end-of-defun-pos ()
|
||
(save-excursion
|
||
(re-search-forward factor-end-of-def-regex nil t)
|
||
(point)))
|
||
|
||
(defun factor-beginning-of-body ()
|
||
(let ((p (point)))
|
||
(and (factor-beginning-of-defun)
|
||
(re-search-forward factor-defun-signature-regex p t)
|
||
(not (re-search-forward factor-end-of-def-regex p t)))))
|
||
|
||
(defun factor-beginning-of-sexp ()
|
||
(if (> (factor-brackets-depth) 0)
|
||
(goto-char (factor-brackets-start))
|
||
(factor-beginning-of-body)))
|
||
|
||
(defsubst factor-beginning-of-sexp-pos ()
|
||
(save-excursion (factor-beginning-of-sexp) (point)))
|
||
|
||
(defun factor-find-end-of-def (&rest foo)
|
||
(save-excursion
|
||
(re-search-forward " ;" nil t)
|
||
(1- (point))))
|
||
|
||
|
||
;;; USING/IN:
|
||
|
||
(defvar-local factor-current-vocab-function 'factor-find-vocab-name)
|
||
|
||
(defsubst factor-current-vocab ()
|
||
(funcall factor-current-vocab-function))
|
||
|
||
(defun factor-find-in ()
|
||
(save-excursion
|
||
(beginning-of-line)
|
||
(if (re-search-backward factor-current-vocab-regex nil t)
|
||
(match-string-no-properties 1)
|
||
(when (re-search-forward factor-current-vocab-regex nil t)
|
||
(match-string-no-properties 1)))))
|
||
|
||
(defun factor-in-private? ()
|
||
"t if point is withing a PRIVATE-block, nil otherwise."
|
||
(save-excursion
|
||
(when (re-search-backward "\\_<<?PRIVATE>?\\_>" nil t)
|
||
(string= (match-string-no-properties 0) "<PRIVATE"))))
|
||
|
||
(defun factor-find-vocab-name ()
|
||
"Name of the vocab with possible .private suffix"
|
||
(concat (factor-find-in) (if (factor-in-private?) ".private" "")))
|
||
|
||
|
||
(defvar-local factor-usings-function 'factor-find-usings)
|
||
|
||
(defsubst factor-usings ()
|
||
(funcall factor-usings-function))
|
||
|
||
(defun factor-file-has-private ()
|
||
(save-excursion
|
||
(goto-char (point-min))
|
||
(and (re-search-forward "\\_<<PRIVATE\\_>" nil t)
|
||
(re-search-forward "\\_<PRIVATE>\\_>" nil t))))
|
||
|
||
(defun factor-find-usings (&optional no-private)
|
||
"Lists all vocabs used by the vocab."
|
||
(save-excursion
|
||
(let ((usings))
|
||
(goto-char (point-max))
|
||
(while (re-search-backward factor-using-lines-regex nil t)
|
||
(dolist (u (split-string (match-string-no-properties 2) nil t))
|
||
(push u usings)))
|
||
(when (and (not no-private) (factor-file-has-private))
|
||
(goto-char (point-max))
|
||
(push (concat (factor-find-in) ".private") usings))
|
||
usings)))
|
||
|
||
|
||
;;; Indentation:
|
||
|
||
(defsubst factor-increased-indentation (&optional i)
|
||
(+ (or i (current-indentation)) factor-indent-level))
|
||
|
||
(defsubst factor-decreased-indentation (&optional i)
|
||
(- (or i (current-indentation)) factor-indent-level))
|
||
|
||
(defun factor-indent-in-brackets ()
|
||
(save-excursion
|
||
(beginning-of-line)
|
||
(when (> (factor-brackets-depth) 0)
|
||
(let* ((bs (factor-brackets-start))
|
||
(be (factor-brackets-end))
|
||
(ln (line-number-at-pos)))
|
||
(when (> ln (line-number-at-pos bs))
|
||
(cond ((and (> be 0)
|
||
(= (- be (point)) (current-indentation))
|
||
(= ln (line-number-at-pos be)))
|
||
(factor-indentation-at bs))
|
||
((or (factor-is-last-char bs)
|
||
(not (eq ?\ (char-after (1+ bs)))))
|
||
(factor-increased-indentation
|
||
(factor-indentation-at bs)))
|
||
(t (+ 2 (factor-line-offset bs)))))))))
|
||
|
||
(defun factor-indent-definition ()
|
||
(save-excursion
|
||
(beginning-of-line)
|
||
(when (factor-at-begin-of-def) 0)))
|
||
|
||
(defsubst factor-previous-non-empty ()
|
||
(forward-line -1)
|
||
(while (and (not (bobp))
|
||
(factor-looking-at-emptiness))
|
||
(forward-line -1)))
|
||
|
||
(defun factor-indent-setter-line ()
|
||
(when (factor-at-setter-line)
|
||
(or (save-excursion
|
||
(let ((indent (and (factor-at-constructor-line)
|
||
(current-indentation))))
|
||
(while (not (or indent
|
||
(bobp)
|
||
(factor-at-begin-of-def)
|
||
(factor-at-end-of-def)))
|
||
(if (factor-at-constructor-line)
|
||
(setq indent (factor-increased-indentation))
|
||
(forward-line -1)))
|
||
indent))
|
||
(save-excursion
|
||
(factor-previous-non-empty)
|
||
(current-indentation)))))
|
||
|
||
(defun factor-indent-continuation ()
|
||
(save-excursion
|
||
(factor-previous-non-empty)
|
||
(cond ((or (factor-at-end-of-def)
|
||
(factor-at-setter-line))
|
||
(factor-decreased-indentation))
|
||
((factor-at-begin-of-indent-def)
|
||
(factor-increased-indentation))
|
||
(t (current-indentation)))))
|
||
|
||
(defun factor-calculate-indentation ()
|
||
"Calculate Factor indentation for line at point."
|
||
(or (and (bobp) 0)
|
||
(factor-indent-definition)
|
||
(factor-indent-in-brackets)
|
||
(factor-indent-setter-line)
|
||
(factor-indent-continuation)
|
||
0))
|
||
|
||
(defun factor-indent-line (&optional ignored)
|
||
"Indents the current Factor line."
|
||
(interactive)
|
||
(let ((target (factor-calculate-indentation))
|
||
(pos (- (point-max) (point))))
|
||
(if (= target (current-indentation))
|
||
(if (< (current-column) (current-indentation))
|
||
(back-to-indentation))
|
||
(beginning-of-line)
|
||
(delete-horizontal-space)
|
||
(indent-to target)
|
||
(if (> (- (point-max) pos) (point))
|
||
(goto-char (- (point-max) pos))))))
|
||
|
||
|
||
;;; Buffer cycling:
|
||
|
||
(defconst factor-cycle-endings
|
||
'(".factor" "-tests.factor" "-docs.factor"))
|
||
|
||
(defvar factor-cycle-ring
|
||
(let ((ring (make-ring (length factor-cycle-endings))))
|
||
(dolist (e factor-cycle-endings ring)
|
||
(ring-insert ring e))
|
||
ring))
|
||
|
||
(defconst factor-cycle-basename-regex
|
||
(format "\\(.+?\\)\\(%s\\)$" (regexp-opt factor-cycle-endings)))
|
||
|
||
(defun factor-cycle-split (basename)
|
||
(when (string-match factor-cycle-basename-regex basename)
|
||
(cons (match-string 1 basename) (match-string 2 basename))))
|
||
|
||
(defun factor-cycle-next (file skip)
|
||
(let* ((dir (file-name-directory file))
|
||
(basename (file-name-nondirectory file))
|
||
(p/s (factor-cycle-split basename))
|
||
(prefix (car p/s))
|
||
(ring factor-cycle-ring)
|
||
(idx (or (ring-member ring (cdr p/s)) 0))
|
||
(len (ring-size ring))
|
||
(i 1)
|
||
(result nil))
|
||
(while (and (< i len) (not result))
|
||
(let* ((suffix (ring-ref ring (+ i idx)))
|
||
(path (expand-file-name (concat prefix suffix) dir)))
|
||
(when (or (file-exists-p path)
|
||
(and (not skip)
|
||
(not (member suffix factor-cycling-no-ask))
|
||
(y-or-n-p (format "Create %s? " path))))
|
||
(setq result path))
|
||
(when (and (not factor-cycle-always-ask-p)
|
||
(not (member suffix factor-cycling-no-ask)))
|
||
(setq factor-cycling-no-ask
|
||
(cons name factor-cycling-no-ask))))
|
||
(setq i (1+ i)))
|
||
result))
|
||
|
||
(defun factor-visit-other-file (&optional create)
|
||
"Cycle between code, tests and docs factor files.
|
||
With prefix, non-existing files will be created."
|
||
(interactive "P")
|
||
(let ((file (factor-cycle-next (buffer-file-name) (not create))))
|
||
(unless file (error "No other file found"))
|
||
(find-file file)
|
||
(unless (file-exists-p file)
|
||
(set-buffer-modified-p t)
|
||
(save-buffer))))
|
||
|
||
|
||
;;; factor-mode:
|
||
|
||
;; I think it is correct to put almost all punctuation characters in
|
||
;; the word class because Factor words can be made up of almost
|
||
;; anything. Otherwise you get incredibly annoying regexps.
|
||
(defvar factor-mode-syntax-table
|
||
(let ((table (make-syntax-table prog-mode-syntax-table)))
|
||
(modify-syntax-entry ?\" "\"" table)
|
||
(modify-syntax-entry ?! "< 2b" table)
|
||
(modify-syntax-entry ?\n "> b" table)
|
||
(modify-syntax-entry ?# "_ 1b" table)
|
||
(modify-syntax-entry ?$ "_" table)
|
||
(modify-syntax-entry ?@ "_" table)
|
||
(modify-syntax-entry ?? "_" table)
|
||
(modify-syntax-entry ?_ "_" table)
|
||
(modify-syntax-entry ?: "_" table)
|
||
(modify-syntax-entry ?< "_" table)
|
||
(modify-syntax-entry ?> "_" table)
|
||
(modify-syntax-entry ?. "_" table)
|
||
(modify-syntax-entry ?, "_" table)
|
||
(modify-syntax-entry ?& "_" table)
|
||
(modify-syntax-entry ?| "_" table)
|
||
(modify-syntax-entry ?% "_" table)
|
||
(modify-syntax-entry ?= "_" table)
|
||
(modify-syntax-entry ?/ "_" table)
|
||
(modify-syntax-entry ?+ "_" table)
|
||
(modify-syntax-entry ?* "_" table)
|
||
(modify-syntax-entry ?- "_" table)
|
||
(modify-syntax-entry ?\; "_" table)
|
||
(modify-syntax-entry ?\' "_" table)
|
||
(modify-syntax-entry ?^ "_" table)
|
||
(modify-syntax-entry ?~ "_" table)
|
||
(modify-syntax-entry ?\( "()" table)
|
||
(modify-syntax-entry ?\) ")(" table)
|
||
(modify-syntax-entry ?\{ "(}" table)
|
||
(modify-syntax-entry ?\} "){" table)
|
||
(modify-syntax-entry ?\[ "(]" table)
|
||
(modify-syntax-entry ?\] ")[" table)
|
||
table))
|
||
|
||
(defun factor-font-lock-string (str)
|
||
"Fontify STR as if it was Factor code."
|
||
(with-temp-buffer
|
||
(set-syntax-table factor-mode-syntax-table)
|
||
(setq-local parse-sexp-ignore-comments t)
|
||
(setq-local parse-sexp-lookup-properties t)
|
||
(setq-local font-lock-defaults '(factor-font-lock-keywords nil nil nil nil))
|
||
|
||
(insert str)
|
||
(let ((font-lock-verbose nil))
|
||
(font-lock-fontify-buffer))
|
||
(buffer-string)))
|
||
|
||
;;;###autoload
|
||
(define-derived-mode factor-mode prog-mode "Factor"
|
||
"A mode for editing programs written in the Factor programming language.
|
||
\\{factor-mode-map}"
|
||
|
||
(setq-local comment-start "! ")
|
||
(setq-local comment-end "")
|
||
(setq-local comment-column factor-comment-column)
|
||
(setq-local comment-start-skip "!+ *")
|
||
(setq-local parse-sexp-ignore-comments t)
|
||
(setq-local parse-sexp-lookup-properties t)
|
||
(setq-local font-lock-defaults '(factor-font-lock-keywords))
|
||
;; Some syntactic constructs are often split over multiple lines so
|
||
;; we need to setup multiline font-lock.
|
||
(setq-local font-lock-multiline t)
|
||
(add-hook 'font-lock-extend-region-functions 'factor-font-lock-extend-region)
|
||
|
||
(define-key factor-mode-map [remap ff-get-other-file]
|
||
'factor-visit-other-file)
|
||
|
||
(setq-local electric-indent-chars
|
||
(append '(?\] ?\} ?\n) electric-indent-chars))
|
||
|
||
(setq-local indent-line-function 'factor-indent-line)
|
||
;; No tabs for you!!
|
||
(setq-local indent-tabs-mode nil)
|
||
|
||
(setq-local beginning-of-defun-function 'factor-beginning-of-defun)
|
||
(setq-local end-of-defun-function 'factor-end-of-defun)
|
||
;; Load fuel-mode too if factor-mode-use-fuel is t.
|
||
(when factor-mode-use-fuel (require 'fuel-mode) (fuel-mode)))
|
||
|
||
;;;###autoload
|
||
(add-to-list 'auto-mode-alist '("\\.factor\\'" . factor-mode))
|
||
|
||
;;;###autoload
|
||
(add-to-list 'interpreter-mode-alist '("factor" . factor-mode))
|
||
|
||
|
||
(provide 'factor-mode)
|
||
|
||
;;; factor-mode.el ends here
|