Multi-value collection contributions

[Jesper Öqvist]

JastAdd 2.1.13

JastAdd supports contributions contributing to multiple target nodes, but does not support single contributions contributing multiple values to a single collection attribute.

Being able to contribute multiple values could be useful in some cases, and we could make a simple addition to the parser to support this. An example of a multi-value contribution:

A contributes each iterableExpression() to Target.attr() for target();

syn Iterable<X> A.iterableExpression();

[Jesper Öqvist]

Add collection value in contribution support

If a collection contribution uses the each keyword before the value expression, the value is treated as a collection and the addAll method is used as combination operator instead of the default combination operator.

see #249 (bitbucket)

→ <<cset 02fa3db8c6de>>

[Jesper Öqvist]

Remove multiple value per contribution

Improved multi-value contributions by supporting iterable values (not only Collection subtypes).

Removed the undocumented multiple value-expression feature for contribution statements.

fixes #249 (bitbucket) fixes #250 (bitbucket)

→ <<cset 68043566275d>>