Add emit header pragma #905
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Sep 16, 2023
## Summary Enable `nkError` propagation for `semWhile` and also change the procedure to not modify the input AST. ## Details For automatic error propagation, `semWhile` now returns an `ElaborateAst` instead of a raw `PNode`.
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{.emit.}pragma for backend code, a hypothetical{.emith.}pragma would add the emitted code to the C generated header file, which would then be public to all other C generated files and other code. One possible use would be to generate specific constants in the form ofenumsor#definessince they are not supported by the language now (see #826).The pragma could accept a position parameter to specify if the generated code has to be put before or after other generated code sections. This would also be a good time to define/document the order of the sections in the header, and also annotate them with C comments to indicate that the following exported functions come from which nimrod module.
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