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authorHugo Hörnquist <hugo@lysator.liu.se>2022-07-09 23:18:16 +0200
committerHugo Hörnquist <hugo@lysator.liu.se>2022-07-09 23:20:00 +0200
commitdeee127a0e7d1803436033ff40d62f9bdf478c35 (patch)
treea315364bb5767fbda13776d6454f862871a07bc2 /module/hnh/util
parentMerge typecheck macro into c-parser. (diff)
downloadcalp-deee127a0e7d1803436033ff40d62f9bdf478c35.tar.gz
calp-deee127a0e7d1803436033ff40d62f9bdf478c35.tar.xz
Extend type-clauses with not.
Diffstat (limited to 'module/hnh/util')
-rw-r--r--module/hnh/util/type.scm3
1 files changed, 2 insertions, 1 deletions
diff --git a/module/hnh/util/type.scm b/module/hnh/util/type.scm
index 800834e5..f35f7839 100644
--- a/module/hnh/util/type.scm
+++ b/module/hnh/util/type.scm
@@ -22,9 +22,10 @@
;; DSL for specifying type predicates
;; Basically a procedure body, but the variable to test is implicit.
(define-syntax build-validator-body
- (syntax-rules (and or list-of)
+ (syntax-rules (and or not)
((_ variable (and clauses ...)) (and (build-validator-body variable clauses) ...))
((_ variable (or clauses ...)) (or (build-validator-body variable clauses) ...))
+ ((_ variable (not clause)) (not (build-validator-body variable clause)))
((_ variable (proc args ...)) (proc variable args ...))
((_ variable proc) (proc variable))))