The ability to invoke other operation lists belongs in the new CallOp.
While we're here, make MacroOp.Add use a pointer receiver to match the
other methods.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
We'd like to improve the API of Flex, Stack and similar layouts
that use MacroOps internall. Unfortunately, the
func (m MacroOp) Add(o *Ops)
method causes the MacroOp to be allocated on the heap, ruining the
nice garbage-free property of layouts.
Fortunately, layouts don't need the feature that caused the heap
allocation: invoking operation lists different than the current.
CallOp separates the invoke-different-list semantic from MacroOp,
in preparation for removing the feature from MacroOp.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Assign (per-frame) unique ids to each MacroOp and StackOp operations
and ensure that the pairwise Push/Pop and Record/End match.
In a follow-up change the Flex and Stack layouts will rely on those
checks to avoid being overlapped.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
By returning the allocated data buffer, Ops can become an interface
in a future change without forcing operations to allocate.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Instead of adding an implicit ClipOp, return a ClipOp ready to use, freeing the
caller from recording a macro.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Package ui is now only about units except for the Config.Now method.
Remove Now and rename Config to Converter. Add layout.Config to
replace the old ui.Config.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Elias Naur