Hi, Thank you for the answers!
> > The FPC wiki states that the ppu file stores all the tokens for the > generic classes. Browsing the source of compiler/symdef.pas (r31298) also > gave me this impression. Does it mean that a recompilation occurs for every > specialization? > > Not for every specialization. If a specialization for the same generic > with the same types already exists that one will be used. This also works > across units. > Great, then my third question is not important. > There have been some ideas (again, regarding the wiki) to store the parse > tree instead of the source code (or tokens) in the ppu. I guess that would > made the specializations quicker. What were the reasons against it? > > Ease of implementation/maintainability. > For the node tree approach the tree would need to be walked and all > accesses to variables of the generic parameter types would need to be > adjusted. This would need adjustments if new node types are added or node > types are extended. However for the token stream approach all this is > handled by existing parser code, so once the parser supports something it's > immediately supported by generics as well (corner cases of respecting > generic types aside). > I see your point, thanks. Best, Mátyás
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