Modernise ast #7185
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Modernise ast #7185
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There's `Parsetree`, the current parse tree, and `Parsetree0`, the legacy parse tree. Module `Parsetree.Legacy` contains functions to map to the legacy parse tree.
cristianoc
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When a ppx is applied: 1 Parsetree is converted to Parsetree0 2 the ppx is run 3 the result is converted to Parsetree
cknitt
approved these changes
Dec 3, 2024
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I'll merge as soon as it's tested on some ppx. |
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If nobody gets to it before me I'll test it on one of my PPXes, but it might be a day or so before I get time. |
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I have added a simple ppx test, which will be useful as sanity check to extend when changing the ast more. |
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Parsetree0.Parsetreecan now be changed and modernised.Ast_mapper_to0andAst_mapper_from0added to convert both ways and maintained wheneverParsetreechanges.Parsetreeis converted to legacyParsetree0, then the ppx is run, then the result is converted back toParsetree.