| int LibGFX_ConstAttrFold ( | AST_Node | * | root, | | int | * | const_val, | | int | * | attr_val | ) |
|
walks the tree and retrieves the currently applicable value/attribute to a simple extent
in
| root | the node to start checking |
| const_val | a pointer to an integer to receive the constant value |
| attr_val | a pointer to an integer to receive the attribute index |
out
| return | 0 if there is no match, 1 for a constant match, 2 for an attribute match |
All arguments may be NULL without impeding functionality. const_val/attr_val will only be written if non-null and the corresponding match was found.