Add AST dump as outputter and inputter #2127
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…t don't need shaping
This also comes with the ability for *any* outputter to pre-process the AST tree if it wanted to (e.g. for remove leaf types it would not be able to output. If the outputter doesn't do anything to the AST it is just a pass-through step. Note this does *not* yet walk the AST and do any AST munging that functions might engage in, it only catches the top level tree as parsed by the inputter. Additionally it is not a full serialization of the AST that could be read back in with an input driver. We'd need a new dependency on something like serpent for that, which would be a lovely next step.
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As of this moment this is just a rough POC. It can round trip at least some basic documents from XML/SIL → AST output -> AST input -> PDF. No ETA on this because there are quite a few questions about how this should work and why and I haven't even given it a spin in my own workflows yet. |
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Followup on code and discussion in #2113