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• Parser-states

Position-inc-line

Increment a position by a number of lines.

Signature

(position-inc-line lines pos) → new-pos

Arguments

lines — Guard (posp lines).

pos — Guard (positionp pos).

Returns

new-pos — Type (positionp new-pos).

The column is reset to 0.

Definitions and Theorems

Function: position-inc-line$inline

(defun position-inc-line$inline (lines pos)
  (declare (xargs :guard (and (posp lines) (positionp pos))))
  (make-position :line (+ (the (integer 1 *) (position->line pos))
                          (the (integer 1 *) lines))
                 :column 0))

Theorem: positionp-of-position-inc-line

(defthm positionp-of-position-inc-line
  (b* ((new-pos (position-inc-line$inline lines pos)))
    (positionp new-pos))
  :rule-classes :rewrite)

Theorem: position-inc-line$inline-of-position-fix-pos

(defthm position-inc-line$inline-of-position-fix-pos
  (equal (position-inc-line$inline lines (position-fix pos))
         (position-inc-line$inline lines pos)))

Theorem: position-inc-line$inline-position-equiv-congruence-on-pos

(defthm position-inc-line$inline-position-equiv-congruence-on-pos
  (implies (position-equiv pos pos-equiv)
           (equal (position-inc-line$inline lines pos)
                  (position-inc-line$inline lines pos-equiv)))
  :rule-classes :congruence)