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authorKartik K. Agaram <vc@akkartik.com>2016-01-19 23:18:03 -0800
committerKartik K. Agaram <vc@akkartik.com>2016-01-19 23:18:03 -0800
commit455fbac64f101b05f7eaca89b84470569e4df3fd (patch)
tree32cfd5b092ad86086e4d15992bb10fd06a12bf13 /screen.mu
parent7163e18a774781c62f0c0542e4cb9037f6a71d22 (diff)
downloadmu-455fbac64f101b05f7eaca89b84470569e4df3fd.tar.gz
2576 - distinguish allocated addresses from others
This is the one major refinement on the C programming model I'm planning
to introduce in mu. Instead of Rust's menagerie of pointer types and
static checking, I want to introduce just one new type, and use it to
perform ref-counting at runtime.

So far all we're doing is updating new's interface. The actual
ref-counting implementation is next.

One implication: I might sometimes need duplicate implementations for a
recipe with allocated vs vanilla addresses of the same type. So far it
seems I can get away with just always passing in allocated addresses;
the situations when you want to pass an unallocated address to a recipe
should be few and far between.
Diffstat (limited to 'screen.mu')
-rw-r--r--screen.mu3
1 files changed, 2 insertions, 1 deletions
diff --git a/screen.mu b/screen.mu
index 1061d191..99efc9ce 100644
--- a/screen.mu
+++ b/screen.mu
@@ -11,7 +11,8 @@ recipe main [
   wait-for-event 0/console
   clear-screen 0/screen
   move-cursor 0/screen, 0/row, 4/column
-  print 0/screen, 98/b
+  10:character <- copy 98/b
+  print 0/screen, 10:character
   wait-for-event 0/console
   move-cursor 0/screen, 0/row, 0/column
   clear-line 0/screen