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• Parser

Cst2ast-string-literal

Given a :nonleaf tree with rulename "string-literal", return the appropriate literal AST node.

Signature

(cst2ast-string-literal tree) → ast-node?

Arguments

tree — Guard (abnf::treep tree).

Returns

ast-node? — Type (literal-optionp ast-node?).

Definitions and Theorems

Function: cst2ast-string-literal

(defun cst2ast-string-literal (tree)
 (declare (xargs :guard (abnf::treep tree)))
 (let ((__function__ 'cst2ast-string-literal))
   (declare (ignorable __function__))
   (b* (((unless (abnf::tree-case tree :nonleaf))
         nil)
        (branches (abnf::tree-nonleaf->branches tree))
        ((unless (and (listp branches)
                      (= (len branches) 3)))
         nil)
        ((unless (equal (first branches)
                        (third branches)))
         nil)
        (double-quoted (equal (first branches)
                              *double-quote-tree-list*))
        ((unless (or double-quoted
                     (equal (first branches)
                            *single-quote-tree-list*)))
         nil)
        (content (cst2ast-string-literal-contents (second branches)
                                                  double-quoted))
        ((unless (string-element-listp content))
         nil))
     (make-literal-plain-string
          :get (make-plain-string :content content
                                  :double-quote-p double-quoted)))))

Theorem: literal-optionp-of-cst2ast-string-literal

(defthm literal-optionp-of-cst2ast-string-literal
  (b* ((ast-node? (cst2ast-string-literal tree)))
    (literal-optionp ast-node?))
  :rule-classes :rewrite)