Question on new preprocessor

[coryodaniel]

I've upgraded to using the new preprocessor and Im experience a "lost of functionality" with converting from !define to !function.

Given these two implementations:

!define OldComponent($alias, $label, $techn) rectangle "==$label\n//<size:$TECHN_FONT_SIZE>[$techn]</size>//" <<component>> as $alias

!unquoted function NewComponent($alias, $label, $techn)
rectangle "==$label\n//<size:$TECHN_FONT_SIZE>[$techn]</size>//" <<component>> as $alias
!endfunction

The OldComponent would allow adding links to the rectangle, but NewComponent silently accepts it, but will not render it.

@startuml Basic Sample
!include lib.puml

OldComponent(foo, "Foo", "foo") [["http://example.com/foo"]]
NewComponent(bar, "Bar", "bar") [["http://example.com/bar"]]

@enduml

The image renders fine, but the cmapx renders:

<map id="plantuml_map" name="plantuml_map">
<area shape="rect" id="id1" href="http://example.com/foo" title="http://example.com/foo" alt="" coords="6,8,304,79"/>
</map>

Is this functionality thats no longer available or is there a new way to do something similar?

[arnaudroques]

As general rules, !define should be changed to return function.

So you should have

@startuml
!$TECHN_FONT_SIZE = 14
!define OldComponent($alias, $label, $techn) rectangle "==$label\n//<size:$TECHN_FONT_SIZE>[$techn]</size>//" <<component>> as $alias

!unquoted function NewComponent($alias, $label, $techn)
!return 'rectangle "==' + $label + '\n//<size:' + $TECHN_FONT_SIZE + '>[' + $techn + ']</size>//" <<component>> as ' + $alias
!endfunction

OldComponent(foo, "Foo", "foo") [["http://example.com/foo"]]
NewComponent(bar, "Bar", "bar") [["http://example.com/bar"]]
@enduml

Which is rendering this.

Hope this helps!
Tell us if you find other issue with converting.

[coryodaniel]

Awesome, much appreciated!!!