Commit 3f8ec6a0 authored by Christophe Rhodes's avatar Christophe Rhodes
Browse files

Fix prolog syntax so that it's not hopelessly broken.

Whitespace at the end of the buffer was leading to all sorts of
confusion.  The syntax display still isn't good, but at least it's now
not crashy or useless.
parent 54046ef9
......@@ -1238,6 +1238,10 @@
((drawing-options :initarg :drawing-options :accessor drawing-options)
(lexeme-index :initarg :lexeme-index :accessor lexeme-index)
(offset :initarg :offset :accessor pump-state-offset)))
(defmethod print-object ((o pump-state) s)
(print-unreadable-object (o s :type t)
(with-slots (lexeme-index offset) o
(format s "~S ~S" lexeme-index offset))))
(defun make-pump-state (drawing-options lexeme-index offset)
(make-instance 'pump-state :drawing-options drawing-options
......@@ -1274,15 +1278,18 @@
(let* ((index (lexeme-index pump-state))
(offset (pump-state-offset pump-state))
(line (line-containing-offset view offset))
(line-start-offset (start-offset line))
(line-end-offset (end-offset line))
(lexeme (and index (element* drei-syntax::lexemes index))))
;; in theory, if INDEX is null everything should be blank lines
;; in theory, if INDEX is null
(null index)
;; if we're not in a lexeme, by definition we
;; have blank space
;; or if we're actually past the lexeme
(> line-start-offset (end-offset lexeme))
;; or somehow before the lexeme
(< line-end-offset (start-offset lexeme)))
;; then we have blank space
(setf (stroke-start-offset stroke) offset
(stroke-end-offset stroke) line-end-offset
(stroke-drawing-options stroke) +default-drawing-options+)
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