From 5dbae738f0ff83bf629b53d6f4e52a8384a97fb1 Mon Sep 17 00:00:00 2001 From: Ludovic Courtès Date: Thu, 16 Jun 2016 22:05:10 +0200 Subject: utils: 'current-source-directory' is now purely an expansion-time thing. * guix/utils.scm (extract-directory): Remove. (current-source-directory): Rewrite as a 'syntax-case' macro. --- guix/utils.scm | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) (limited to 'guix') diff --git a/guix/utils.scm b/guix/utils.scm index 19fd0b0844..8aadfb0075 100644 --- a/guix/utils.scm +++ b/guix/utils.scm @@ -702,18 +702,16 @@ output port, and PROC's result is returned." ;;; Source location. ;;; -(define (extract-directory properties) - "Extract the directory name from source location PROPERTIES." - (match (assq 'filename properties) - (('filename . (? string? file-name)) - (dirname file-name)) - (_ - #f))) - -(define-syntax-rule (current-source-directory) - "Expand to the directory of the current source file or #f if it could not -be determined." - (extract-directory (current-source-location))) +(define-syntax current-source-directory + (lambda (s) + "Return the current directory name or #f if it could not be determined." + (syntax-case s () + ((_) + (match (assq 'filename (syntax-source s)) + (('filename . (? string? file-name)) + (dirname file-name)) + (_ + #f)))))) ;; A source location. (define-record-type -- cgit v1.2.3