src/code/format-directive.lisp

   1 ;;;; This software is part of the SBCL system. See the README file for
   2 ;;;; more information.
   3 ;;;;
   4 ;;;; This software is derived from the CMU CL system, which was
   5 ;;;; written at Carnegie Mellon University and released into the
   6 ;;;; public domain. The software is in the public domain and is
   7 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
   8 ;;;; files for more information.
   9
  10 (in-package "SB!FORMAT")
  11 \f
  12 (define-condition format-error (error reference-condition)
  13   ((complaint :reader format-error-complaint :initarg :complaint)
  14    (args :reader format-error-args :initarg :args :initform nil)
  15    (control-string :reader format-error-control-string
  16                    :initarg :control-string
  17                    :initform *default-format-error-control-string*)
  18    (offset :reader format-error-offset :initarg :offset
  19            :initform *default-format-error-offset*)
  20    (second-relative :reader format-error-second-relative
  21                     :initarg :second-relative :initform nil)
  22    (print-banner :reader format-error-print-banner :initarg :print-banner
  23                  :initform t))
  24   (:report %print-format-error)
  25   (:default-initargs :references nil))
  26
  27 (defun %print-format-error (condition stream)
  28   (format stream
  29           "~:[~*~;error in ~S: ~]~?~@[~%  ~A~%  ~V@T^~@[~V@T^~]~]"
  30           (format-error-print-banner condition)
  31           'format
  32           (format-error-complaint condition)
  33           (format-error-args condition)
  34           (format-error-control-string condition)
  35           (format-error-offset condition)
  36           (format-error-second-relative condition)))
  37 \f
  38 (defstruct format-directive
  39   (string (missing-arg) :type simple-string)
  40   (start (missing-arg) :type (and unsigned-byte fixnum))
  41   (end (missing-arg) :type (and unsigned-byte fixnum))
  42   (character (missing-arg) :type character)
  43   (colonp nil :type (member t nil))
  44   (atsignp nil :type (member t nil))
  45   (params nil :type list))
  46 (defmethod print-object ((x format-directive) stream)
  47   (print-unreadable-object (x stream)
  48     (write-string (format-directive-string x)
  49                   stream
  50                   :start (format-directive-start x)
  51                   :end (format-directive-end x))))