Add parsing of sum type declarations #1088
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August 2, 2023 09:11
…d-ids Require record fields to be simple identifiers
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August 2, 2023 15:52
Not sure why this updating. Tests succeed whether this file is updated or not. But, well, it's up to date now :)
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thpani
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| type T = | ||
| | A | ||
| | B(int) |
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Should we also test type T = A | B(int)?
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Good call! I've added this :)
|
Thanks for the review! |
shonfeder
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* Add syntax for sum type declarations * Add parser generator updates * Adapt flattening and graphics for sum types * Add unit test for sum type declaration parsing * Update the super spec Not sure why this updating. Tests succeed whether this file is updated or not. But, well, it's up to date now :) * Add test for IRPrinting
shonfeder
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Aug 4, 2023
* Add syntax for sum type declarations * Add parser generator updates * Adapt flattening and graphics for sum types * Add unit test for sum type declaration parsing * Update the super spec Not sure why this updating. Tests succeed whether this file is updated or not. But, well, it's up to date now :) * Add test for IRPrinting
shonfeder
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Aug 4, 2023
* Add syntax for sum type declarations * Add parser generator updates * Adapt flattening and graphics for sum types * Add unit test for sum type declaration parsing * Update the super spec Not sure why this updating. Tests succeed whether this file is updated or not. But, well, it's up to date now :) * Add test for IRPrinting
shonfeder
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Aug 5, 2023
These changes address the comments from #1088 I had fixed all of these, but then merged the PR without pushing my fixes.
shonfeder
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Aug 5, 2023
These changes address the comments from #1088 I had fixed all of these, but then merged the PR without pushing my fixes.
shonfeder
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Aug 7, 2023
These changes address the comments from #1088 I had fixed all of these, but then merged the PR without pushing my fixes.
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Addresses the type declaration part of #1082.
This adds support for the sum type declaration syntax proposed in #1062.
The most interesting part of these changes is the addition of the IR constructs
to represent the declaration of sum types. This includes a specialized
variant of the row types allowing us to statically enforce that the rows of a
variant type cannot be open. See the discussion on #1062 for the motivation for
this design decision.
Note that we do not add a parsing rule to
typefor sum types. This reflectsthe fact that sum types can only be referenced by their defined name: anonymous
sum types are not supported.
Note that this PR is into the
sf/sum-typefeature branch.CHANGELOG.mdfor any new functionalityREADME.mdupdated for any listed functionality