• Top
  • Documentation
  • Books
  • Boolean-reasoning
  • Projects
  • Debugging
  • Std
  • Proof-automation
  • Macro-libraries
  • ACL2
  • Interfacing-tools
  • Hardware-verification
    • Gl
    • Esim
    • Vl2014
    • Sv
    • Fgl
    • Vwsim
    • Vl
      • Syntax
      • Loader
        • Preprocessor
        • Vl-loadconfig
        • Vl-loadstate
        • Lexer
        • Parser
          • Parse-expressions
          • Parse-udps
          • Parse-statements
          • Parse-property
          • Vl-genelements
          • Parse-paramdecls
          • Parse-blockitems
          • Parse-utils
          • Parse-insts
          • Parse-functions
          • Parse-assignments
          • Parse-clocking
            • Vl-sort-clocking-block-items
            • Vl-parse-normal-clocking-declaration
            • Vl-parse-list-of-clocking-decl-assigns
            • Vl-clocking-direction-head
            • Vl-parse-default-skew-item
            • Vl-parse-clocking-block-item
            • Vl-parse-global-clocking-declaration
            • Vl-parse-clocking-direction
            • Vl-parse-clocking-block-items-until-endclocking
            • Vl-defaultskew-item
            • Vl-parse-clocking-skew
            • Vl-parse-defaultdisable
            • Vl-maybe-parse-clocking-skew
            • Vl-clocking-block-item
            • Vl-clocking-block-item-list
            • Vl-defaultskew-item-list
          • Parse-strengths
          • Vl-parse-genvar-declaration
          • Vl-parse
          • Parse-netdecls
          • Parse-asserts
          • Vl-maybe-parse-lifetime
          • Parse-dpi-import-export
          • Parse-ports
          • Parse-timeunits
          • Seq
          • Parse-packages
          • Parse-eventctrl
        • Vl-load-merge-descriptions
        • Vl-find-basename/extension
        • Vl-load-file
        • Vl-loadresult
        • Scope-of-defines
        • Vl-find-file
        • Vl-flush-out-descriptions
        • Vl-description
        • Vl-read-file
        • Vl-includeskips-report-gather
        • Vl-load-main
        • Extended-characters
        • Vl-load
        • Vl-load-description
        • Vl-descriptions-left-to-load
        • Inject-warnings
        • Vl-preprocess-debug
        • Vl-write-preprocessor-debug-file
        • Vl-read-file-report-gather
        • Vl-load-descriptions
        • Vl-load-files
        • Translate-off
        • Vl-load-read-file-hook
        • Vl-read-file-report
        • Vl-loadstate-pad
        • Vl-load-summary
        • Vl-collect-modules-from-descriptions
        • Vl-loadstate->warnings
        • Vl-iskips-report
        • Vl-descriptionlist
      • Warnings
      • Getting-started
      • Utilities
      • Printer
      • Kit
      • Mlib
      • Transforms
    • X86isa
    • Svl
    • Rtl
  • Software-verification
  • Math
  • Testing-utilities

• Parse-clocking

Vl-parse-defaultdisable

Match a single default disable iff ... construct

Signature

(vl-parse-defaultdisable atts &key (tokstream 'tokstream) 
                         (config 'config)) 
 
  → 
(mv errmsg? value new-tokstream)

Arguments

config — Guard (vl-loadconfig-p config).

SystemVerilog-2012 Grammar:

module_or_generate_item_declaration ::= ...
    | 'default' 'disable' 'iff' expression_or_dist ';'

Definitions and Theorems

Function: vl-parse-defaultdisable-fn

(defun vl-parse-defaultdisable-fn (atts tokstream config)
 (declare (xargs :stobjs (tokstream)))
 (declare (xargs :guard (vl-loadconfig-p config)))
 (declare (ignorable config))
 (declare (xargs :guard (vl-atts-p atts)))
 (let ((__function__ 'vl-parse-defaultdisable))
   (declare (ignorable __function__))
   (seq tokstream
        (disable := (vl-match-token :vl-kwd-default))
        (:= (vl-match-token :vl-kwd-disable))
        (:= (vl-match-token :vl-kwd-iff))
        (exprdist := (vl-parse-expression-or-dist))
        (:= (vl-match-token :vl-semi))
        (return (make-vl-defaultdisable :exprdist exprdist
                                        :loc (vl-token->loc disable)
                                        :atts atts)))))

Theorem: vl-parse-defaultdisable-fails-gracefully

(defthm vl-parse-defaultdisable-fails-gracefully
  (implies (mv-nth 0 (vl-parse-defaultdisable atts))
           (not (mv-nth 1 (vl-parse-defaultdisable atts)))))

Theorem: vl-warning-p-of-vl-parse-defaultdisable

(defthm vl-warning-p-of-vl-parse-defaultdisable
  (iff (vl-warning-p (mv-nth 0 (vl-parse-defaultdisable atts)))
       (mv-nth 0 (vl-parse-defaultdisable atts))))

Theorem: vl-parse-defaultdisable-result

(defthm vl-parse-defaultdisable-result
 (implies
  (and (force (vl-atts-p atts)))
  (equal
     (vl-defaultdisable-p (mv-nth 1 (vl-parse-defaultdisable atts)))
     (not (mv-nth 0 (vl-parse-defaultdisable atts))))))

Theorem: vl-parse-defaultdisable-count-strong

(defthm vl-parse-defaultdisable-count-strong
 (and
  (<= (vl-tokstream-measure
           :tokstream (mv-nth 2 (vl-parse-defaultdisable atts)))
      (vl-tokstream-measure))
  (implies
       (not (mv-nth 0 (vl-parse-defaultdisable atts)))
       (< (vl-tokstream-measure
               :tokstream (mv-nth 2 (vl-parse-defaultdisable atts)))
          (vl-tokstream-measure))))
 :rule-classes ((:rewrite) (:linear)))