Keyword 'set' is not supported

[chnav]

Important keyword 'set' is not supported in declarations and classes.
http://wiki.openstreetmap.org/wiki/MapCSS/0.2#Declarations

e.g.
{ set tag=value; }
or
{ set .minor_road; }

produce an error:

[WARN] [mapcss-parser] Unsupported attribute 'set' was ignored!
0[ERROR] [parser] Parsing of file "mapcss\mymap.mapcss" failed:
[ERROR] [parser] Illegal syntax! Expected valid ":"!
[ERROR] [parser] In line 102 column 9:
[ERROR] [parser] ' set .minor_road;'
[ERROR] [parser] ^-here

[TheMarex]

Yes, this is a know limitation. With the current architecture I think it would be rather challenging to add that, since we would need to add some external state to the matching routines to track modification of tags. (Basically we would need a hash-map that stores for each object which tags where overwritten)

Things that would be needed to do for this to work:

• Extent the grammar to handle the new syntax
• Add an unordered_map for ways, nodes, relations to src/server/stylesheet.cpp
• Modify Selector interface (src/server/selectors/*) to take the unordered_map as parameter
• Add code to src/server/selectors/apply_selector.cpp to add overrides to unordered_map
• Fix each Selector to check for an override before using the actual values from "tags" unordered_map

[chnav]

Roger that, thanks.