23 Syntax utilities

(require (planet untyped/unlib/syntax))

Utilities for creating macros and working with syntax.

(symbolic-identifier=? stx1 stx2) → boolean?

stx1 : syntax?

stx2 : syntax?

Compares two identifiers based on their symbolic representation.

(make-id stx arg ...) → syntax?

stx : (U syntax? #f)

arg : (U syntax? string? symbol? number?)

Creates an identifier by appending args. Equivalent to:

  (datum->syntax stx (string->symbol (apply string-append (map arg->string args))))

where arg->string converts an argument to a string.

(syntax-location-string stx) → string?

stx : syntax?

Returns a string describing the source location of stx (for example "myfile.ss:123:45").

(begin-for-syntax/any-order definition ...)

definition   =   (define (id arg ...) expr ...)     |   (define id expr)

Like begin-for-syntax except that definitions can refer to previous definitions in the manner of a letrec statement. Only definitions are allowed within the body of the form.