I previously sent these patches to the new devicetree-compiler, but I suspect not many people had subscribed so I'm resending to the devicetree list. So, we've been talking about richer expression / constant / function / macro support for dtc since forever. So far attempts to start on that haven't gotten very far (in large part because of my pickiness about new syntax). Anyway, I've started having a new crack at this. This patch series implements the infrastructure for "runtime" evaluated expressions. For now they're just constructed and immediately evaluated, so they're not quite usable for user-defined functions yet, but it's a big step towards that. 10/10 is the only patch in this series which implements new user-visible functionality, the rest are just internal reworking. 10/10 experiments with the new mechanisms to implement string append and repeat operators - I'm not 100% sure if I'm happy with the syntax used for this yet (overloaded + and *, like Python). Suggestions welcome. This is indirectly relevant to the schema checking concepts current much discused. Any schema language is likely to want richer expression support than we currently have to be useful. In addition, I expect we'll need data structures very similar to the expression trees implemented here to keep track of schema "patterns" or other pieces. These patches can also be found in the 'expressions' branch at git://git.kernel.org/pub/scm/utils/dtc/dtc.git. [NOTE: I'm considering this an experimental branch for now, which will be rebased at whim]. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
