Here is a patch to provide listing all languages for 'guile' and 'guild
compile' command.
Thanks!
>From f06fcd9e997e0bd6de9f85c22d75bd7a05545627 Mon Sep 17 00:00:00 2001
From: Nala Ginrut <nalagin...@gmail.com>
Date: Fri, 25 Jan 2013 18:38:22 +0800
Subject: [PATCH] List all available languages.
* ice-9/command-line.scm: list available languages for 'guile' cmd.
* scripts/compile.scm: list all available languages for 'guild compile' cmd.
* NOTE: 'guile --list-languages' won't list inner languages, but 'guild compile -l'
will do that.
---
module/ice-9/command-line.scm | 23 +++++++++++++++++++++++
module/scripts/compile.scm | 22 ++++++++++++++++++++++
2 files changed, 45 insertions(+)
diff --git a/module/ice-9/command-line.scm b/module/ice-9/command-line.scm
index 2aa50ec..57d93c7 100644
--- a/module/ice-9/command-line.scm
+++ b/module/ice-9/command-line.scm
@@ -33,6 +33,9 @@
(define-module (ice-9 command-line)
#:autoload (system vm vm) (set-default-vm-engine! set-vm-engine! the-vm)
+ #:use-module (srfi srfi-1)
+ #:use-module (ice-9 regex)
+ #:use-module (ice-9 ftw)
#:export (compile-shell-switches
version-etc
*GPLv3+*
@@ -122,6 +125,7 @@ If FILE begins with `-' the -s switch is mandatory.
-e FUNCTION after reading script, apply FUNCTION to
command line arguments
--language=LANG change language; default: scheme
+ --list-languages list all available languages
-ds do -s script at this point
--debug start with the \"debugging\" VM engine
--no-debug start with the normal VM engine (backtraces but
@@ -189,6 +193,19 @@ If FILE begins with `-' the -s switch is mandatory.
((module-ref (resolve-module '(system base compile)) 'compile-file)
f #:to 'value))))
+(define (not-inner-lang? str)
+ (not (string-match
+ "glil|glil\\.scm|assembly|assembly\\.scm|bytecode|objcode\\.scm|objcode|tree-il|tree-il\\.scm|value|\\.\\.|\\."
+ str)))
+
+(define (get-all-available-languages)
+ (let lp((rest (map (lambda (x) (string-append x "/language")) %load-path)) (result '()))
+ (cond
+ ((null? rest) (apply lset-union string=? result))
+ (else
+ (let ((ll (scandir (car rest) not-inner-lang?)))
+ (lp (cdr rest) (if ll (cons ll result) result)))))))
+
(define* (compile-shell-switches args #:optional (usage-name "guile"))
(let ((arg0 "guile")
(script-cell #f)
@@ -306,6 +323,12 @@ If FILE begins with `-' the -s switch is mandatory.
(cons `(current-language ',(string->symbol (car args)))
out)))
+ ((string=? "--list-languages" arg) ; list all languages
+ (for-each (lambda (l)
+ (format #t "~a~%" l))
+ (get-all-available-languages))
+ (exit 0))
+
((string=? arg "-ds") ; do script here
;; We put a dummy "load" expression, and let the -s put the
;; filename in.
diff --git a/module/scripts/compile.scm b/module/scripts/compile.scm
index 20db944..7e74eb9 100644
--- a/module/scripts/compile.scm
+++ b/module/scripts/compile.scm
@@ -35,6 +35,8 @@
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-13)
#:use-module (srfi srfi-37)
+ #:use-module (ice-9 regex)
+ #:use-module (ice-9 ftw)
#:use-module (ice-9 format)
#:export (compile))
@@ -45,6 +47,19 @@
(format (current-error-port) "error: ~{~a~}~%" messages)
(exit 1))
+(define (valid-lang? str)
+ (not (string-match
+ "[A-Za-z0-9_ -]+\\.scm|\\.\\.|\\."
+ str)))
+
+(define (get-all-available-languages)
+ (let lp((rest (map (lambda (x) (string-append x "/language")) %load-path)) (result '()))
+ (cond
+ ((null? rest) (apply lset-union string=? result))
+ (else
+ (let ((ll (scandir (car rest) valid-lang?)))
+ (lp (cdr rest) (if ll (cons ll result) result)))))))
+
(define %options
;; Specifications of the command-line options.
(list (option '(#\h "help") #f #f
@@ -80,6 +95,12 @@
(option '(#\O "optimize") #f #f
(lambda (opt name arg result)
(alist-cons 'optimize? #t result)))
+ (option '(#\l "list-languages") #f #f
+ (lambda (opt name arg result)
+ (for-each (lambda (l)
+ (format #t "~a~%" l))
+ (get-all-available-languages))
+ (exit 0)))
(option '(#\f "from") #t #f
(lambda (opt name arg result)
(if (assoc-ref result 'from)
@@ -157,6 +178,7 @@ Compile each Guile source file FILE into a Guile object.
-W, --warn=WARNING emit warnings of type WARNING; use `--warn=help'
for a list of available warnings
+ -l, --list-languages list all available languages
-f, --from=LANG specify a source language other than `scheme'
-t, --to=LANG specify a target language other than `objcode'
-T, --target=TRIPLET produce bytecode for host TRIPLET
--
1.7.10.4
