about summary refs log tree commit diff stats
path: root/lambda-to-mu.mu
diff options
context:
space:
mode:
authorKartik K. Agaram <vc@akkartik.com>2016-10-22 12:08:10 -0700
committerKartik K. Agaram <vc@akkartik.com>2016-10-22 12:08:10 -0700
commitada5eb55cb185edf30dcac48b25cc485d44677ef (patch)
treee147838f053a582e33146ac4fc4ab30ac8434e0e /lambda-to-mu.mu
parenta6deb48067f8049922f16ed3489896f7749fd39f (diff)
downloadmu-ada5eb55cb185edf30dcac48b25cc485d44677ef.tar.gz
3552
Stop requiring jump instructions to explicitly provide a ':label' type
for jump targets.

This has been a source of repeated confusion for my students:
  a) They'd add the ':label' to the label definition rather than the
  jump target (label use)
  b) They'd spend time thinking about whether the initial '+' prefix was
  part of the label name.

In the process I cleaned up a couple of things:

  - the space of names is more cleanly partitioned into labels and
    non-labels (clarifying that '_' and '-' are non-label prefixes)
  - you can't use label names as regular variables anymore
  - you can infer the type of a label just from its name
Diffstat (limited to 'lambda-to-mu.mu')
-rw-r--r--lambda-to-mu.mu2
1 files changed, 1 insertions, 1 deletions
diff --git a/lambda-to-mu.mu b/lambda-to-mu.mu
index 6c358d9f..4cd9da7d 100644
--- a/lambda-to-mu.mu
+++ b/lambda-to-mu.mu
@@ -232,7 +232,7 @@ def parse in:&:stream:char -> out:&:cell, in:&:stream:char [
         close-paren?:bool <- equal c, 41/close-paren
         break-unless close-paren?
         read in  # skip ')'
-        break +end-pair:label
+        break +end-pair
       }
       # still here? read next element of pair
       next:&:cell, in <- parse in