• 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-parse-0+-assertion-variable-declarations
            • Vl-parse-property-formal-type-and-id
            • Vl-parse-assertion-item
            • Vl-parse-sequence-declaration
            • Vl-parse-property-declaration
            • Vl-parse-sequence-port-item
            • Vl-parse-property-port-item
            • Vl-parse-1+-sequence-port-items
            • Vl-parse-1+-property-port-items
            • Vl-make-assertion-vardecls
            • Vl-plausible-start-of-assertion-item-p
            • Vl-parse-assertion-item-looks-concurrent-p
          • 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-asserts

Vl-parse-assertion-item

Parse an assertion_item into a vl-modelement-p.

Signature

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

Arguments

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

SystemVerilog-2012 grammar:

assertion_item ::= concurrent_assertion_item
                 | deferred_immediate_assertion_item

deferred_immediate_assertion_item ::= [ block_identifier ':' ] deferred_immediate_assertion_statement

concurrent_assertion_item ::= [ block_identifier ':' ] concurrent_assertion_statement
                            | checker_instantiation

Definitions and Theorems

Function: vl-parse-assertion-item-fn

(defun vl-parse-assertion-item-fn (tokstream config)
 (declare (xargs :stobjs (tokstream)))
 (declare (xargs :guard (vl-loadconfig-p config)))
 (declare (ignorable config))
 (declare (xargs :guard (vl-plausible-start-of-assertion-item-p)))
 (let ((__function__ 'vl-parse-assertion-item))
  (declare (ignorable __function__))
  (seq
   tokstream
   (when (vl-is-token? :vl-idtoken)
         (blockid := (vl-match))
         (:= (vl-match)))
   (when
    (vl-parse-assertion-item-looks-concurrent-p)
    (cassertion := (vl-parse-concurrent-assertion-statement))
    (return
     (list
         (if blockid
             (change-vl-cassertion cassertion
                                   :name (vl-idtoken->name blockid))
           cassertion))))
   (assertion := (vl-parse-immediate-assertion-statement))
   (unless
    (vl-assertion->deferral assertion)
    (return-raw
     (vl-parse-error
      "Top level assertion needs a deferral (i.e., '#0' or 'final').")))
   (return
    (list (if blockid
              (change-vl-assertion assertion
                                   :name (vl-idtoken->name blockid))
            assertion))))))

Theorem: vl-parse-assertion-item-fails-gracefully

(defthm vl-parse-assertion-item-fails-gracefully
  (implies (mv-nth 0 (vl-parse-assertion-item))
           (not (mv-nth 1 (vl-parse-assertion-item)))))

Theorem: vl-warning-p-of-vl-parse-assertion-item

(defthm vl-warning-p-of-vl-parse-assertion-item
  (iff (vl-warning-p (mv-nth 0 (vl-parse-assertion-item)))
       (mv-nth 0 (vl-parse-assertion-item))))

Theorem: vl-parse-assertion-item-result

(defthm vl-parse-assertion-item-result
  (implies
       (and (force (vl-plausible-start-of-assertion-item-p)))
       (vl-modelementlist-p (mv-nth 1 (vl-parse-assertion-item)))))

Theorem: vl-parse-assertion-item-true-listp

(defthm vl-parse-assertion-item-true-listp
  (true-listp (mv-nth 1 (vl-parse-assertion-item)))
  :rule-classes :type-prescription)

Theorem: vl-parse-assertion-item-count-strong

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