You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
26 lines
778 B
Racket
26 lines
778 B
Racket
#lang racket/base
|
|
|
|
;; Changes the default behavior of #%top.
|
|
;; Unbound identifiers are allowed, and treated as the
|
|
;; tag in a txexpr (with the rest of the expression treated as the body)
|
|
;; To suppress this behavior, use def/c to wrap any name.
|
|
;; If that name isn't already defined, you'll get the usual syntax error.
|
|
|
|
(require (for-syntax racket/base) pollen/tag)
|
|
|
|
(provide (except-out (all-defined-out) top~)
|
|
(rename-out (top~ #%top)))
|
|
|
|
;; Allow tag attributes to be specified as follows:
|
|
;; @foo['shape: "square" 'color: "red"]{hello}
|
|
(define-syntax (top~ stx)
|
|
(syntax-case stx ()
|
|
[(_ . id) #'(make-tag-function 'id)]))
|
|
|
|
|
|
(define-syntax (def/c stx)
|
|
(syntax-case stx ()
|
|
[(_ x)
|
|
(if (identifier-binding #'x )
|
|
#'x
|
|
#'(#%top . x))])) |