• Top
  • Documentation
  • Books
  • Boolean-reasoning
  • Projects
  • Debugging
  • Community
  • Std
  • Proof-automation
  • Macro-libraries
  • ACL2
  • Interfacing-tools
  • Hardware-verification
    • Gl
    • Esim
    • Vl2014
      • Warnings
      • Primitives
      • Use-set
      • Syntax
      • Getting-started
      • Utilities
      • Loader
        • Preprocessor
        • Vl-loadconfig
        • Lexer
        • Vl-loadstate
        • Parser
          • Parse-expressions
          • Parse-udps
          • Vl-genelements
          • Parse-paramdecls
          • Parse-blockitems
          • Parse-utils
          • Parse-insts
          • Parse-datatype
          • Parse-functions
          • Parse-datatypes
          • Parse-strengths
            • Vl-parse-drive-strength-or-charge-strength
            • Vl-parse-drive-strength
            • Vl-parse-optional-drive-strength
            • Vl-parse-charge-strength
            • *vl-strength1-alist*
            • *vl-strength0-alist*
            • *vl-ds1-alist*
            • *vl-ds0/1-keywords*
            • *vl-ds0-alist*
            • *vl-charge-strengths-keywords*
            • *vl-charge-strengths-alist*
            • *vl-ds1-keywords*
            • *vl-ds0-keywords*
          • Vl-parse-genvar-declaration
          • Vl-parse
          • Parse-ports
          • Seq
          • Parse-packages
        • Vl-load-merge-descriptions
        • Scope-of-defines
        • Vl-load-file
        • Vl-flush-out-descriptions
        • Vl-description
        • Vl-loadresult
        • Vl-read-file
        • Vl-find-basename/extension
        • Vl-find-file
        • Vl-read-files
        • Extended-characters
        • Vl-load
        • Vl-load-main
        • Vl-load-description
        • Vl-descriptions-left-to-load
        • Inject-warnings
        • Vl-load-descriptions
        • Vl-load-files
        • Vl-load-summary
        • Vl-collect-modules-from-descriptions
        • Vl-descriptionlist
      • Transforms
      • Lint
      • Mlib
      • Server
      • Kit
      • Printer
      • Esim-vl
      • Well-formedness
    • Sv
    • Fgl
    • Vwsim
    • Vl
    • X86isa
    • Svl
    • Rtl
  • Software-verification
  • Math
  • Testing-utilities

• Parse-strengths

Vl-parse-drive-strength

Match drive_strength, return a vl-gatestrength-p.

Signature

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

Arguments

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

Definitions and Theorems

Function: vl-parse-drive-strength-fn

(defun vl-parse-drive-strength-fn (tokstream config)
 (declare (xargs :stobjs (tokstream)))
 (declare (xargs :guard (vl-loadconfig-p config)))
 (declare (ignorable config))
 (let ((__function__ 'vl-parse-drive-strength))
  (declare (ignorable __function__))
  (seq
    tokstream
    (:= (vl-match-token :vl-lparen))
    (first := (vl-match-some-token *vl-ds0/1-keywords*))
    (:= (vl-match-token :vl-comma))
    (second := (vl-match-some-token *vl-ds0/1-keywords*))
    (:= (vl-match-token :vl-rparen))
    (return-raw
         (b* (((mv s-zero s-one)
               (if (member-eq (vl-token->type first)
                              *vl-ds0-keywords*)
                   (mv (vl-token->type first)
                       (vl-token->type second))
                 (mv (vl-token->type second)
                     (vl-token->type first))))
              ((when (and (member-eq s-zero *vl-ds0-keywords*)
                          (member-eq s-one *vl-ds1-keywords*)
                          (or (not (eq s-zero :vl-kwd-highz0))
                              (not (eq s-one :vl-kwd-highz1)))))
               (mv nil
                   (make-vl-gatestrength
                        :zero (cdr (assoc-eq s-zero *vl-ds0-alist*))
                        :one (cdr (assoc-eq s-one *vl-ds1-alist*)))
                   tokstream)))
           (vl-parse-error "Invalid drive strength."))))))

Theorem: vl-parse-drive-strength-fails-gracefully

(defthm vl-parse-drive-strength-fails-gracefully
  (implies (mv-nth 0 (vl-parse-drive-strength))
           (not (mv-nth 1 (vl-parse-drive-strength)))))

Theorem: vl-warning-p-of-vl-parse-drive-strength

(defthm vl-warning-p-of-vl-parse-drive-strength
  (iff (vl-warning-p (mv-nth 0 (vl-parse-drive-strength)))
       (mv-nth 0 (vl-parse-drive-strength))))

Theorem: vl-parse-drive-strength-result

(defthm vl-parse-drive-strength-result
 (implies
     (and t)
     (equal (vl-gatestrength-p (mv-nth 1 (vl-parse-drive-strength)))
            (not (mv-nth 0 (vl-parse-drive-strength))))))

Theorem: vl-parse-drive-strength-count-strong

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