/usr/share/racket/pkgs/algol60/algol60.rkt is in racket-common 6.7-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | #lang racket
;; Compiles a simplified AST to Scheme.
(require "runtime.rkt"
"prims.rkt"
(for-syntax "parse.rkt"
#|Parses to generate an AST. Identifiers in the AST
;; are represented as syntax objects with source location.|#
"simplify.rkt"
#|Desugars the AST, transforming `for' to `if'+`goto',
and flattening `if' statements so they are always
of the for `if <exp> then goto <label> else goto <label>' |#
"compile.rkt"
racket/path))
(provide include-algol literal-algol)
#| By using #'here for the context of identifiers
introduced by compilation, the identifiers can
refer to runtime functions and primitives, as
well as racket:|#
(define-syntax (include-algol stx)
(syntax-case stx ()
[(_ str)
(string? (syntax-e (syntax str)))
(compile-simplified
(simplify
(parse-a60-file
(normalize-path (syntax-e (syntax str))
(or
(current-load-relative-directory)
(current-directory))))
#'here)
#'here)]))
(define-syntax (literal-algol stx)
(syntax-case stx ()
[(_ strs ...)
(andmap (λ (x) (string? (syntax-e x)))
(syntax->list (syntax (strs ...))))
(compile-simplified
(simplify
(parse-a60-port
(open-input-string
(apply
string-append
(map syntax-e (syntax->list #'(strs ...)))))
(syntax-source stx))
#'here)
#'here)]))
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