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-rw-r--r--plastic/plastic-syntax.el119
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diff --git a/plastic/plastic-syntax.el b/plastic/plastic-syntax.el
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-;; plastic-syntax.el - Syntax of Plastic
-;; Author: Paul Callaghan <P.C.Callaghan@durham.ac.uk>
-;; Maintainer: <author>
-;; plastic-syntax.el,v 6.0 2001/09/03 12:11:56 da Exp
-
-;; adapted from the following, by Paul Callaghan
-;; ;; lego-syntax.el Syntax of LEGO
-;; ;; Copyright (C) 1994 - 1998 LFCS Edinburgh.
-;; ;; Author: Thomas Kleymann and Dilip Sequeira
-;; ;; Maintainer: Paul Callaghan <P.C.Callaghan@durham.ac.uk>
-;; ;; lego-syntax.el,v 2.10 1998/11/06 16:18:55 tms Exp
-
-
-(require 'proof-syntax)
-
-;; ----- keywords for font-lock.
-
-(defconst plastic-keywords-goal '("$?Goal"))
-
-(defconst plastic-keywords-save '("$?Save" "SaveFrozen" "SaveUnfrozen"))
-
-(defconst plastic-commands
- (append plastic-keywords-goal plastic-keywords-save
- '("allE" "allI" "andE" "andI" "Assumption" "Claim" "Coercion"
- "Cut" "Discharge" "DischargeKeep"
- "echo" "exE" "exI" "Expand" "ExpAll"
- "ExportState" "Equiv" "For" "Freeze" "Hnf" "Immed"
- "impE" "impI" "Induction" "Inductive"
- "Invert" "Init" "intros" "Intros" "Module" "Next"
- "Normal" "notE" "notI" "orE" "orIL" "orIR" "qnify" "Qnify"
- "Qrepl" "Record" "Refine" "Repeat" "Return" "ReturnAll"
- "Try" "Unfreeze"))
- "Subset of Plastic keywords and tacticals which are terminated by a \?;")
-
-(defconst plastic-keywords
- (append plastic-commands
- '("Constructors" "Double" "ElimOver" "Fields" "Import" "Inversion"
- "NoReductions" "Parameters" "Relation" "Theorems")))
-
-(defconst plastic-tacticals '("Then" "Else" "Try" "Repeat" "For"))
-
-;; ----- regular expressions for font-lock
-(defconst plastic-error-regexp "^\\(FAIL\\)"
- "A regular expression indicating that the Plastic process has identified an error.")
-
-(defvar plastic-id proof-id)
-
-(defvar plastic-ids (concat plastic-id "\\(\\s *,\\s *" plastic-id "\\)*")
- "*For font-lock, we treat \",\" separated identifiers as one identifier
- and refontify commata using \\{plastic-fixup-change}.")
-
-(defconst plastic-arg-list-regexp "\\s *\\(\\[[^]]+\\]\\s *\\)*"
- "Regular expression maching a list of arguments.")
-
-(defun plastic-decl-defn-regexp (char)
- (concat "\\[\\s *\\(" plastic-ids "\\)" plastic-arg-list-regexp char))
-; Examples
-; ^ ^^^^ ^^^^^^^^^^^^^^^^^^^^^^^ ^^^^
-; [ sort =
-; [ sort [n:nat] =
-; [ sort [abbrev=...][n:nat] =
-
-(defconst plastic-definiendum-alternative-regexp
- (concat "\\(" plastic-id "\\)" plastic-arg-list-regexp "\\s * ==")
- "Regular expression where the first match identifies the definiendum.")
-
-(defvar plastic-font-lock-terms
- (list
-
- ; lambda binders
- (list (plastic-decl-defn-regexp "[:|?]") 1
- 'proof-declaration-name-face)
-
- ; let binders
- (list plastic-definiendum-alternative-regexp 1 'font-lock-function-name-face)
- (list (plastic-decl-defn-regexp "=") 1 'font-lock-function-name-face)
-
- ; Pi and Sigma binders
- (list (concat "[{<]\\s *\\(" plastic-ids "\\)") 1
- 'proof-declaration-name-face)
-
- ;; Kinds
- (cons (concat "\\<Prop\\>\\|\\<Type\\s *\\(("
- plastic-id ")\\)?") 'font-lock-type-face))
- "*Font-lock table for Plastic terms.")
-
-;; Instead of "[^:]+", it may be better to use "plastic-id". Furthermore,
-;; it might be safer to append "\\s-*:".
-(defconst plastic-goal-with-hole-regexp
- (concat "\\(" (proof-ids-to-regexp plastic-keywords-goal) "\\)\\s-+\\([^:]+\\)")
- "Regular expression which matches an entry in `plastic-keywords-goal'
- and the name of the goal.")
-
-(defconst plastic-save-with-hole-regexp
- (concat "\\(" (proof-ids-to-regexp plastic-keywords-save) "\\)\\s-+\\([^;]+\\)")
- "Regular expression which matches an entry in
- `plastic-keywords-save' and the name of the goal.")
-
-(defvar plastic-font-lock-keywords-1
- (append
- plastic-font-lock-terms
- (list
- (cons (proof-ids-to-regexp plastic-keywords) 'font-lock-keyword-face)
- (cons (proof-ids-to-regexp plastic-tacticals) 'proof-tacticals-name-face)
- (list plastic-goal-with-hole-regexp 2 'font-lock-function-name-face)
- (list plastic-save-with-hole-regexp 2 'font-lock-function-name-face))))
-
-(defun plastic-init-syntax-table ()
- "Set appropriate values for syntax table in current buffer."
-
- (modify-syntax-entry ?_ "_")
- (modify-syntax-entry ?\' "_")
- (modify-syntax-entry ?\| ".")
- (modify-syntax-entry ?\* ". 23")
- (modify-syntax-entry ?\( "()1")
- (modify-syntax-entry ?\) ")(4"))
-
-
-(provide 'plastic-syntax)