rename define macros

coerce.rkt

@@ -1,13 +1,14 @@
 #lang racket/base
 (require racket/contract net/url xml racket/set)
 (module+ test (require rackunit))
-(require "len.rkt" "exception.rkt" "define.rkt")
+(require "len.rkt" "exception.rkt" "define.rkt" "debug.rkt")
+
 
 (define (make-coercion-error-handler target-format x)
   (λ(e) (error (format "Can't convert ~a to ~a" x target-format))))
 
 ;; general way of coercing to integer
-(define/provide/contract (->int x)
+(define+provide/contract (->int x)
   (any/c . -> . integer?)
   (try 
    (cond
@@ -21,7 +22,7 @@
 
 
 ;; general way of coercing to string
-(define/provide/contract (->string x)
+(define+provide/contract (->string x)
   (any/c . -> . string?)
   (try 
    (cond 
@@ -37,13 +38,13 @@
 
 
 ;; general way of coercing to symbol
-(define/provide/contract (->symbol x)
+(define+provide/contract (->symbol x)
   (any/c . -> . symbol?)
   (try (string->symbol (->string x)) 
        (except [exn:fail? (make-coercion-error-handler 'symbol x)])))
 
 ;; general way of coercing to path
-(define/provide/contract (->path x)
+(define+provide/contract (->path x)
   (any/c . -> . path?)
   (try
    (cond 
@@ -53,19 +54,19 @@
 
 
 ;; general way of coercing to url
-(define/provide/contract (->url x)
+(define+provide/contract (->url x)
   (any/c . -> . url?)
   (try (string->url (->string x))
        (except [exn:fail? (make-coercion-error-handler 'url x)])))
 
-(define/provide/contract (->complete-path x)
+(define+provide/contract (->complete-path x)
   (any/c . -> . complete-path?)
   (try (path->complete-path (->path x))
        (except [exn:fail? (make-coercion-error-handler 'complete-path x)])))
 
 
 ;; general way of coercing to a list
-(define/provide/contract (->list x)
+(define+provide/contract (->list x)
   (any/c . -> . list?)
   (try
    (cond 
@@ -77,7 +78,7 @@
 
 
 ;; general way of coercing to vector
-(define/provide/contract (->vector x)
+(define+provide/contract (->vector x)
   (any/c . -> . vector?)
   (try
    (cond
@@ -88,11 +89,9 @@
 
 
 ;; general way of coercing to boolean
-(define/provide/contract (->boolean x)
+(define+provide/contract (->boolean x)
   (any/c . -> . boolean?)
-  (try
+  (if x #t #f))
-   (if x #t #f)
-   (except [exn:fail? (make-coercion-error-handler 'boolean x)])))
 
 
 ;;
@@ -135,3 +134,4 @@
    #:name 'coerce/boolean?
    #:projection (make-blame-handler ->boolean 'can-be-boolean?)))
 
+

debug.rkt

@@ -5,7 +5,7 @@
 ; report the current value of the variable, then return it
 (define-syntax-rule (report var)
   (begin 
-    (basic-message 'var "=" var) 
+    (displayln (format "~a = ~a" 'var var) (current-error-port)) 
     var))
 
 

define.rkt

@@ -2,7 +2,7 @@
 (require (for-syntax racket/base))
 (require racket/contract)
 
-(provide define/provide define/provide/contract)
+(provide define/provide define+provide/contract define/contract+provide)
 
 (define-syntax (define/provide stx)
   (syntax-case stx ()
@@ -14,12 +14,24 @@
          (provide name)
          (define name body ...))]))
 
-(define-syntax (define/provide/contract stx)
+(define-syntax (define+provide/contract stx)
   (syntax-case stx ()
     [(_ (proc arg ... . rest-arg) contract body ...)
-     #'(define/provide/contract proc contract
+     #'(define+provide/contract proc contract
          (λ(arg ... . rest-arg) body ...))]
     [(_ name contract body ...)
      #'(begin
          (provide (contract-out [name contract]))
          (define name body ...))]))
+
+
+
+(define-syntax (define/contract+provide stx)
+  (syntax-case stx ()
+    [(_ (proc arg ... . rest-arg) contract body ...)
+     #'(define/contract+provide proc contract
+         (λ(arg ... . rest-arg) body ...))]
+    [(_ name contract body ...)
+     #'(begin
+         (provide name)
+         (define/contract name contract body ...))]))