• Top
  • Documentation
  • Books
  • Boolean-reasoning
  • Projects
  • Debugging
  • Community
  • 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
          • Parse-strengths
          • Vl-parse-genvar-declaration
          • Vl-parse
          • Parse-netdecls
          • Parse-asserts
          • Vl-maybe-parse-lifetime
          • Parse-dpi-import-export
          • Parse-ports
          • Parse-timeunits
            • Vl-parse-optional-timeunits-declaration
            • Vl-parse-timeliteral
            • Vl-parse-timeunitdecl
            • Vl-parse-timeprecisiondecl
          • 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-timeunits

Vl-parse-optional-timeunits-declaration

Matches [timeunits_declaration].

Signature

(vl-parse-optional-timeunits-declaration &key (tokstream 'tokstream) 
                                         (config 'config)) 
 
  → 
(mv errmsg? value new-tokstream)

Arguments

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

Definitions and Theorems

Function: vl-parse-optional-timeunits-declaration-fn

(defun vl-parse-optional-timeunits-declaration-fn (tokstream config)
  (declare (xargs :stobjs (tokstream)))
  (declare (xargs :guard (vl-loadconfig-p config)))
  (declare (ignorable config))
  (let ((__function__ 'vl-parse-optional-timeunits-declaration))
    (declare (ignorable __function__))
    (seq tokstream
         (when (vl-is-token? :vl-kwd-timeunit)
               (unit1 := (vl-parse-timeunitdecl)))
         (when (vl-is-token? :vl-kwd-timeprecision)
               (prec := (vl-parse-timeprecisiondecl)))
         (when (and (not unit1)
                    (vl-is-token? :vl-kwd-timeunit))
               (unit2 := (vl-parse-timeunitdecl)))
         (return (cons (or unit1 unit2) prec)))))

Theorem: vl-parse-optional-timeunits-declaration-fails-gracefully

(defthm vl-parse-optional-timeunits-declaration-fails-gracefully
 (implies (mv-nth 0
                  (vl-parse-optional-timeunits-declaration))
          (not (mv-nth 1
                       (vl-parse-optional-timeunits-declaration)))))

Theorem: vl-warning-p-of-vl-parse-optional-timeunits-declaration

(defthm vl-warning-p-of-vl-parse-optional-timeunits-declaration
 (iff
   (vl-warning-p (mv-nth 0
                         (vl-parse-optional-timeunits-declaration)))
   (mv-nth 0
           (vl-parse-optional-timeunits-declaration))))

Theorem: vl-parse-optional-timeunits-declaration-result

(defthm vl-parse-optional-timeunits-declaration-result
 (implies
  (and (not (mv-nth 0
                    (vl-parse-optional-timeunits-declaration)))
       (and t))
  (and
   (consp (mv-nth 1
                  (vl-parse-optional-timeunits-declaration)))
   (vl-maybe-timeunitdecl-p
        (car (mv-nth 1
                     (vl-parse-optional-timeunits-declaration))))
   (vl-maybe-timeprecisiondecl-p
        (cdr (mv-nth 1
                     (vl-parse-optional-timeunits-declaration)))))))

Theorem: vl-parse-optional-timeunits-declaration-count-weak

(defthm vl-parse-optional-timeunits-declaration-count-weak
 (<=
  (vl-tokstream-measure
      :tokstream (mv-nth 2
                         (vl-parse-optional-timeunits-declaration)))
  (vl-tokstream-measure))
 :rule-classes ((:rewrite) (:linear)))