utils: Type string->any.

scribblings/utils.scrbl

@@ -156,6 +156,14 @@ Converts all the values of a @racket[VariableMapping] to string.
 (stringify-variable-mapping (hash 'a '(and a b) 'b '(not b)))
 ]}
 
+@defproc[(string->any [str String]) Any]{
+
+Reads any value from string.
+
+@examples[#:eval utils-evaluator
+(string->any "(or b (not a))")
+]}
+
 @section{Additional graph utilities}
 
 @section{Pretty printing}

utils.rkt

@@ -15,7 +15,7 @@
            (for-syntax syntax/parse racket/list))
 
   (provide eval-with eval1-with auto-hash-ref/explicit auto-hash-ref/:
-           extract-symbols any->string stringify-variable-mapping)
+           extract-symbols any->string stringify-variable-mapping string->any)
 
   (define-type Variable Symbol)
   (define-type (VariableMapping A) (Immutable-HashTable Variable A))
@@ -141,18 +141,26 @@
       (define mp (stringify-variable-mapping #hash((a . (and a b)) (b . (not b)))))
       (check-equal? (hash-ref mp 'a) "(and a b)")
       (check-equal? (hash-ref mp 'b) "(not b)")))
+
+  (: string->any (-> String Any))
+  (define (string->any str)
+    (with-input-from-string str (λ () (read))))
+
+  (module+ test
+    (test-case "string->any"
+      (check-equal? (string->any "(or b (not a))") '(or b (not a)))
+      (check-equal? (string->any "14") 14)))
   )
 
 (require 'typed)
 (provide eval-with eval1-with auto-hash-ref/explicit auto-hash-ref/:
-         extract-symbols any->string stringify-variable-mapping)
+         extract-symbols any->string stringify-variable-mapping string->any)
 
 ;;; Untyped section.
 
 (provide
  ;; Functions
- (contract-out [string->any (-> string? any/c)]
-               [read-org-sexp (-> string? (listof any/c))]
+ (contract-out [read-org-sexp (-> string? (listof any/c))]
                [map-sexp (-> procedure? any/c any/c)]
                [unorg (-> string? (listof any/c))]
                [unstringify-pairs (-> (listof (general-pair/c string? any/c))
@@ -202,15 +210,6 @@
 ;;; A string variable mapping is a mapping from variables to strings.
 (define (string-variable-mapping? dict) (hash/c symbol? string?))
 
-;;; Reads any value from string.
-(define (string->any str)
-  (with-input-from-string str (λ () (read))))
-
-(module+ test
-  (test-case "string->any"
-    (check-equal? (string->any "(or b (not a))") '(or b (not a)))
-    (check-equal? (string->any "14") 14)))
-
 ;;; Given a sexp, converts all "#f" to #f and "#t" to #t.
 ;;;
 ;;; When I read Org-mode tables, I pump them through a call to the