move from mzlib/contract to racket/contract

parser-tools-lib/parser-tools/private-yacc/grammar.rkt

@@ -6,7 +6,7 @@
   (require mzlib/class
            mzlib/list
            "yacc-helper.rkt"
-           mzlib/contract)
+           racket/contract)
   
   ;; Each production has a unique index 0 <= index <= number of productions
   (define-struct prod (lhs rhs index prec action) (make-inspector))
@@ -26,12 +26,12 @@
   (define-struct prec (num assoc) (make-inspector))
   
   (provide/contract
-   (make-item (prod? (union false/c natural-number/c) . -> . item?))
-   (make-term (symbol? (union false/c natural-number/c) (union prec? false/c) . -> . term?))
-   (make-non-term (symbol? (union false/c natural-number/c) . -> . non-term?))
-   (make-prec (natural-number/c (symbols 'left 'right 'nonassoc) . -> . prec?))
-   (make-prod (non-term? (vectorof (union non-term? term?))
-               (union false/c natural-number/c) (union false/c prec?) syntax? . -> . prod?)))
+   (make-item (prod? (or/c #f natural-number/c) . -> . item?))
+   (make-term (symbol? (or/c #f natural-number/c) (or/c prec? #f) . -> . term?))
+   (make-non-term (symbol? (or/c #f natural-number/c) . -> . non-term?))
+   (make-prec (natural-number/c (or/c 'left 'right 'nonassoc) . -> . prec?))
+   (make-prod (non-term? (vectorof (or/c non-term? term?))
+               (or/c #f natural-number/c) (or/c #f prec?) syntax? . -> . prod?)))
   
   (provide 
      

parser-tools-lib/parser-tools/private-yacc/input-file-parser.rkt

@@ -7,13 +7,13 @@
            "../private-lex/token-syntax.rkt"
            "grammar.rkt"
            mzlib/class
-           mzlib/contract)
+           racket/contract)
   (require-for-template mzscheme)
   
-
+(define (is-a-grammar%? x) (is-a? x grammar%))
   (provide/contract 
    (parse-input ((listof identifier?) (listof identifier?) (listof identifier?)
-                 (union false/c syntax?) syntax? any/c . -> . (is-a?/c grammar%)))
+                 (or/c #f syntax?) syntax? any/c . -> . is-a-grammar%?))
    (get-term-list ((listof identifier?) . -> . (listof identifier?))))
 
   (define stx-for-original-property (read-syntax #f (open-input-string "original")))

parser-tools-lib/parser-tools/private-yacc/parser-builder.rkt

@@ -4,14 +4,17 @@
            "grammar.rkt"
            "table.rkt"
            mzlib/class
-           mzlib/contract)
+           racket/contract)
   (require-for-template mzscheme)
   
   (provide/contract
-   (build-parser ((string? any/c any/c (listof identifier?) (listof identifier?)
-                   (listof identifier?) (union syntax? false/c) syntax?)
-                  . ->* .
-                  (any/c any/c any/c any/c))))
+   (build-parser (-> string? any/c any/c
+                     (listof identifier?)
+                     (listof identifier?)
+                     (listof identifier?)
+                     (or/c syntax? #f)
+                     syntax?
+                     (values any/c any/c any/c any/c))))
   
   ;; fix-check-syntax : (listof identifier?) (listof identifier?) (listof identifier?)
   ;;                    (union syntax? false/c) syntax?) -> syntax?

parser-tools-lib/parser-tools/private-yacc/table.rkt

@@ -6,13 +6,14 @@
            "lr0.rkt"
            "lalr.rkt"
            "parser-actions.rkt"
-           mzlib/contract
+           racket/contract
            mzlib/list
            mzlib/class)
 
+  (define (is-a-grammar%? x) (is-a? x grammar%))
   (provide/contract 
-   (build-table ((is-a?/c grammar%) string? any/c . -> .
-                 (vectorof (listof (cons/c (union term? non-term?) action?))))))
+   (build-table (-> is-a-grammar%? string? any/c
+                    (vectorof (listof (cons/c (or/c term? non-term?) action?))))))
 
   ;; A parse-table is (vectorof (listof (cons/c gram-sym? action)))
   ;; A grouped-parse-table is (vectorof (listof (cons/c gram-sym? (listof action))))