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          • Line-and-column-tracking
          • Sin$c-okp
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• Sin

Sin$c

Concrete string input stream ACL2::stobj.

In the implementation, we take care to ensure that all indices satisfy (unsigned-byte-p 60), making them fixnums on Lisps such as CCL and SBCL. For this to work, we also use 0-based line number indices instead of 1-based line numbers, which ensures that both the line and column numbers never exceed the current position.

Function: sin-str-p

(defun sin-str-p (x)
  (declare (xargs :guard t))
  (let ((__function__ 'sin-str-p))
    (declare (ignorable __function__))
    (and (stringp x)
         (< (len (coerce x 'list))
            (expt 2 60)))))

Definition: sin$cp

(defstobj sin$c
  (sin$c-str :type (satisfies sin-str-p)
             :initially "")
  (sin$c-pos :type (unsigned-byte 60)
             :initially 0)
  (sin$c-line :type (unsigned-byte 60)
              :initially 0)
  (sin$c-col :type (unsigned-byte 60)
             :initially 0)
  (sin$c-file :type string :initially "")
  :inline t)

Subtopics

Line-and-column-tracking

Routines for tracking line and column numbers as we iterate through a string.

Sin$c-okp

Basic well-formedness of the concrete sin$c stobj.

Sin$c-init

Concrete implementation of strin-init.

Sin$c-nthcdr

Concrete implementation of strin-nthcdr.

Sin$c-cdr

Concrete implementation of strin-cdr.

Sin$c-firstn

Concrete implementation of strin-firstn.

Sin$c-count-charset

Concrete implementation of strin-count-charset.

Sin$c-nth

Concrete implementation of strin-nth.

Sin$c-matches-p

Concrete implementation of strin-matches-p.

Sin$c-imatches-p

Concrete implementation of strin-imatches-p.

Sin$c-find

Concrete implementation of strin-find.

Sin$c-len

Concrete implementation of strin-len.

Sin$c-endp

Concrete implementation of strin-endp.

Sin$c-car

Concrete implementation of strin-car.

Sin$corr

Correspondence between the concrete sin$c stobj and its abstract strin-p representation.

Sin$c-get-line

Concrete implementation of strin-get-line.

Sin$c-get-file

Concrete implementation of strin-get-file.

Sin$c-get-col

Concrete implementation of strin-get-col.