This does not deal directly with XIRF (that's composed into a pipeline
outside of this parser).
I'd like to clean up further...perhaps I should retire the
wip-xmlo-xir-reader flag now, despite the minor performance regression (see
previous recent commits for explanation).
DEV-10935
This aggregates all non-panic errors that can occur during link time, making
`Box<dyn Error>` unnecessary. I've been wanting to do this for a long time,
so it's nice seeing this come together. This is a powerful tool, in that we
know, at compile time, all errors that can occur, and properly report on
them and compose them. This method of error composition ensures that all
errors have a chance to be handled within their context, though it'll take
time to do so in a decent way.
This just maintains compatibility with the dynamic dispatch that was
previous occurring. This work is being done to introduce the initial
diagnostic system, which was really difficult/confusing to do without proper
errors types at the top level, considering the toplevel is responsible for
triggering the diagnostic reporting.
The cycle error is in particular going to be interesting once the system is
in place, especially once it provides spans in the future, since it will
guide the user through the code to understand how the cycle formed.
More to come.
DEV-10935
We want to be able to build a representation of the dependency graph so
we can easily inspect it.
We do not want to make GraphML by default. It is better to use a tool.
We use "petgraph-graphml".
We want to add an option to set the output file to the linker so we do
not need to redirect output to awk any longer.
This also adds integration tests for tameld.
This is garbage code. Do not use it. It is intentionally throwaway.
While I've researched Rust, I haven't actually _used_ it for a project, so
this is a combination of me exploring various ways of accomplishing the
problem and forcing myself to learn certain aspects of the language.
I'll likely be using petgraph, and this also currently lacks symbol
abstractions. This commit also performs far too much heap allocation
copying strings around. But it _does_ perform the topological sort.
Since this only stores the symbol name, it lacks enough information about
the symbol to perform a proper linking.
Mike Gerwitz
Joseph Frazer