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| author | Kartik K. Agaram <vc@akkartik.com> | 2016-10-22 12:08:10 -0700 |
|---|---|---|
| committer | Kartik K. Agaram <vc@akkartik.com> | 2016-10-22 12:08:10 -0700 |
| commit | ada5eb55cb185edf30dcac48b25cc485d44677ef (patch) | |
| tree | e147838f053a582e33146ac4fc4ab30ac8434e0e /sandbox/012-editor-undo.mu | |
| parent | a6deb48067f8049922f16ed3489896f7749fd39f (diff) | |
| download | mu-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 'sandbox/012-editor-undo.mu')
| -rw-r--r-- | sandbox/012-editor-undo.mu | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/sandbox/012-editor-undo.mu b/sandbox/012-editor-undo.mu index ce8c9e21..27f49377 100644 --- a/sandbox/012-editor-undo.mu +++ b/sandbox/012-editor-undo.mu @@ -162,7 +162,7 @@ before <insert-character-end> [ typing <- put typing, after-column:offset, cursor-column typing <- put typing, after-top-of-screen:offset, top-after *op <- merge 0/insert-operation, typing - break +done-adding-insert-operation:label + break +done-adding-insert-operation } # if not, create a new operation insert-from:&:duplex-list:char <- next cursor-before @@ -742,7 +742,7 @@ before <move-cursor-end> [ move <- put move, after-column:offset, cursor-column move <- put move, after-top-of-screen:offset, top-after *op <- merge 1/move-operation, move - break +done-adding-move-operation:label + break +done-adding-move-operation } op:&:operation <- new operation:type *op <- merge 1/move-operation, cursor-row-before, cursor-column-before, top-before, cursor-row/after, cursor-column/after, top-after, undo-coalesce-tag @@ -1441,7 +1441,7 @@ before <backspace-character-end> [ deletion <- put deletion, after-column:offset, cursor-column deletion <- put deletion, after-top-of-screen:offset, top-after *op <- merge 2/delete-operation, deletion - break +done-adding-backspace-operation:label + break +done-adding-backspace-operation } # if not, create a new operation op:&:operation <- new operation:type @@ -1668,7 +1668,7 @@ before <delete-character-end> [ deletion <- put deletion, after-column:offset, cursor-column deletion <- put deletion, after-top-of-screen:offset, top-after *op <- merge 2/delete-operation, deletion - break +done-adding-delete-operation:label + break +done-adding-delete-operation } # if not, create a new operation op:&:operation <- new operation:type |