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| author | Andy Wingo <wingo@pobox.com> | 2013-05-28 11:20:29 -0400 |
|---|---|---|
| committer | Andy Wingo <wingo@pobox.com> | 2013-06-10 22:43:13 +0200 |
| commit | 64fc50c294df9b6644fd40bec90eb8f4dfbc3907 (patch) | |
| tree | 6a68d8f1d4d338f8a207accbd74db073f0f3f631 /module/language/tree-il/peval.scm | |
| parent | 4828538940e6fcd1637f359fa5557acb4b6e9c91 (diff) | |
| download | guile-64fc50c294df9b6644fd40bec90eb8f4dfbc3907.tar.gz | |
Simplify let-values to let if consumer binds only one variable
* module/language/tree-il/peval.scm (peval): let-values with a consumer
that has only one argument is the same as let.
* test-suite/tests/peval.test ("partial evaluation"): Add test.
Diffstat (limited to 'module/language/tree-il/peval.scm')
| -rw-r--r-- | module/language/tree-il/peval.scm | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/module/language/tree-il/peval.scm b/module/language/tree-il/peval.scm index c5a1c4e59..d7d561d4f 100644 --- a/module/language/tree-il/peval.scm +++ b/module/language/tree-il/peval.scm @@ -979,6 +979,10 @@ top-level bindings from ENV and return the resulting expression." ;; reconstruct the let-values, pevaling the consumer. (let ((producer (for-values producer))) (or (match consumer + (($ <lambda-case> src (req-name) #f #f #f () (req-sym) body #f) + (for-tail + (make-let src (list req-name) (list req-sym) (list producer) + body))) (($ <lambda-case> src req opt rest #f inits gensyms body #f) (let* ((nmin (length req)) (nmax (and (not rest) (+ nmin (if opt (length opt) 0))))) |