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• Env

Pop-scope-env

Pop a scope block from the top of the environment.

Signature

(pop-scope-env env) → new-env

Arguments

env — Guard (envp env).

Returns

new-env — Type (envp new-env).

All variables declared in the top scope are removed from scope. Any variables shadowed by the top scope block are unshadowed.

Definitions and Theorems

Function: pop-scope-env

(defun pop-scope-env (env)
  (declare (xargs :guard (envp env)))
  (let ((__function__ 'pop-scope-env))
    (declare (ignorable __function__))
    (cdr (env-fix env))))

Theorem: envp-of-pop-scope-env

(defthm envp-of-pop-scope-env
  (b* ((new-env (pop-scope-env env)))
    (envp new-env))
  :rule-classes :rewrite)