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authorjao <jao@gnu.org>2020-07-20 04:41:00 +0100
committerjao <jao@gnu.org>2020-07-20 04:41:00 +0100
commitaab5226dfe937861c54729744e8add15d931f758 (patch)
tree7397e3edaffb23d5efb6aad1762681834faabfa3 /src/geiser/utils.scm
parent20043b13bb9756079d73c68ffd3942cecedb2b9e (diff)
downloadgeiser-guile-aab5226dfe937861c54729744e8add15d931f758.tar.gz
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geiser -> src
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+;;; utils.scm -- utility functions
+
+;; Copyright (C) 2009, 2010, 2011 Jose Antonio Ortega Ruiz
+
+;; This program is free software; you can redistribute it and/or
+;; modify it under the terms of the Modified BSD License. You should
+;; have received a copy of the license along with this program. If
+;; not, see <http://www.xfree86.org/3.3.6/COPYRIGHT2.html#5>.
+
+;; Start date: Mon Mar 02, 2009 01:48
+
+(define-module (geiser utils)
+ #:export (make-location
+ symbol->object
+ pair->list
+ sort-symbols!
+ make-symbol-sort
+ gensym?)
+ #:use-module (ice-9 regex))
+
+(define (symbol->object sym)
+ (and (symbol? sym)
+ (module-defined? (current-module) sym)
+ (module-ref (current-module) sym)))
+
+(define (pair->list pair)
+ (let loop ((d pair) (s '()))
+ (cond ((null? d) (reverse! s))
+ ((symbol? d) (reverse! (cons d s)))
+ (else (loop (cdr d) (cons (car d) s))))))
+
+(define (make-location file line)
+ (list (cons "file" (if (string? file) file '()))
+ (cons "line" (if (number? line) (+ 1 line) '()))))
+
+(define (sort-symbols! syms)
+ (let ((cmp (lambda (l r)
+ (string<? (symbol->string l) (symbol->string r)))))
+ (sort! syms cmp)))
+
+(define (make-symbol-sort sel)
+ (let ((cmp (lambda (a b)
+ (string<? (symbol->string (sel a))
+ (symbol->string (sel b))))))
+ (lambda (syms)
+ (sort! syms cmp))))
+
+(define (gensym? sym)
+ (and (symbol? sym) (gensym-name? (format #f "~A" sym))))
+
+(define (gensym-name? name)
+ (and (string-match "^#[{]" name) #t))