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• Parser

Parse-*-comma-identifier

Parses zero or more occurrences of '"," identifier' and returns a list of identifier AST nodes.

Signature

(parse-*-comma-identifier tokens) 
  → 
(mv result-asts tokens-after-identifiers)

Arguments

tokens — Guard (abnf::tree-listp tokens).

Returns

result-asts — Type (identifier-listp result-asts).

tokens-after-identifiers — Type (abnf::tree-listp tokens-after-identifiers).

Definitions and Theorems

Function: parse-*-comma-identifier

(defun parse-*-comma-identifier (tokens)
  (declare (xargs :guard (abnf::tree-listp tokens)))
  (let ((__function__ 'parse-*-comma-identifier))
    (declare (ignorable __function__))
    (b* ((tokens (abnf::tree-list-fix tokens))
         ((when (endp tokens)) (mv nil tokens))
         (tokens-after-comma-or-err (parse-symbol "," tokens))
         ((when (reserrp tokens-after-comma-or-err))
          (mv nil tokens))
         ((mv first-id tokens-after-first-id)
          (parse-identifier tokens-after-comma-or-err))
         ((when (null first-id)) (mv nil tokens))
         ((when (reserrp tokens-after-first-id))
          (mv nil tokens))
         ((unless (identifierp first-id))
          (mv nil tokens))
         ((mv rest-ids tokens-after-rest-ids)
          (parse-*-comma-identifier tokens-after-first-id)))
      (mv (cons first-id rest-ids)
          tokens-after-rest-ids))))

Theorem: identifier-listp-of-parse-*-comma-identifier.result-asts

(defthm identifier-listp-of-parse-*-comma-identifier.result-asts
  (b* (((mv ?result-asts ?tokens-after-identifiers)
        (parse-*-comma-identifier tokens)))
    (identifier-listp result-asts))
  :rule-classes :rewrite)

Theorem: tree-listp-of-parse-*-comma-identifier.tokens-after-identifiers

(defthm
    tree-listp-of-parse-*-comma-identifier.tokens-after-identifiers
  (b* (((mv ?result-asts ?tokens-after-identifiers)
        (parse-*-comma-identifier tokens)))
    (abnf::tree-listp tokens-after-identifiers))
  :rule-classes :rewrite)

Theorem: len-of-parse-*-comma-identifier-<=

(defthm len-of-parse-*-comma-identifier-<=
  (b* (((mv ?result-asts ?tokens-after-identifiers)
        (parse-*-comma-identifier tokens)))
    (<= (len tokens-after-identifiers)
        (len tokens)))
  :rule-classes :linear)