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feat: compute type of elvis operators with nullable left operand #715

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merged 8 commits into from
Oct 31, 2023

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@lars-reimann lars-reimann commented Oct 31, 2023

Closes #541.

Summary of Changes

Add logic to compute the lowest common supertype of several types. This is needed to compute the type of elvis operators with a nullable left operand. It's also later needed for the inference of type parameters.

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🦙 MegaLinter status: ✅ SUCCESS

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codecov bot commented Oct 31, 2023

Codecov Report

Merging #715 (3309001) into main (3b3a495) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##              main      #715    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files           73        73            
  Lines         9624      9823   +199     
  Branches      2012      2102    +90     
==========================================
+ Hits          9624      9823   +199     
Files Coverage Δ
...age/partialEvaluation/safe-ds-partial-evaluator.ts 100.00% <100.00%> (ø)
packages/safe-ds-lang/src/language/typing/model.ts 100.00% <100.00%> (ø)
...ang/src/language/typing/safe-ds-class-hierarchy.ts 100.00% <100.00%> (ø)
...-ds-lang/src/language/typing/safe-ds-core-types.ts 100.00% <100.00%> (ø)
...s-lang/src/language/typing/safe-ds-type-checker.ts 100.00% <100.00%> (ø)
...-lang/src/language/typing/safe-ds-type-computer.ts 100.00% <100.00%> (ø)

@lars-reimann lars-reimann marked this pull request as ready for review October 31, 2023 16:20
@lars-reimann lars-reimann merged commit 376b083 into main Oct 31, 2023
7 checks passed
@lars-reimann lars-reimann deleted the elvis-typing branch October 31, 2023 16:20
lars-reimann pushed a commit that referenced this pull request Nov 12, 2023
## [0.3.0](v0.2.0...v0.3.0) (2023-11-12)

### Features

* annotations for the purity of functions ([#709](#709)) ([9d342e4](9d342e4)), closes [#559](#559)
* call hierarchy provider ([#735](#735)) ([168d098](168d098)), closes [#680](#680)
* compute type of elvis operators with nullable left operand ([#715](#715)) ([376b083](376b083)), closes [#541](#541)
* customize rendering of `[@param](https://github.com/param)`, `[@Result](https://github.com/result)`, and `[@type](https://github.com/type)Param` tags ([#764](#764)) ([e049148](e049148)), closes [#669](#669)
* ensure an overriding member matches the overridden one ([#758](#758)) ([a698a6a](a698a6a)), closes [#639](#639)
* error if callable type is used in wrong context ([#763](#763)) ([9b1522f](9b1522f)), closes [#713](#713)
* error if type parameter is used in nested named type declaration ([#750](#750)) ([52374aa](52374aa)), closes [#748](#748)
* info if overriding member is not needed ([#759](#759)) ([23b340e](23b340e)), closes [#25](#25)
* mark constraint lists as experimental ([#752](#752)) ([d48e1e0](d48e1e0)), closes [#18](#18)
* mark type parameter lists and type argument lists as experimental ([#755](#755)) ([f1a052a](f1a052a)), closes [#753](#753)
* mark unused internal/private segments as unnecessary ([#710](#710)) ([3ba8698](3ba8698)), closes [#682](#682)
* minor improvements for purity info ([#728](#728)) ([8d59607](8d59607))
* partially evaluate lambdas and segments ([#734](#734)) ([c40347c](c40347c)), closes [#603](#603)
* scoping for inherited members ([#706](#706)) ([4518aee](4518aee)), closes [#540](#540)
* scoping for member access on literals and literal types ([#754](#754)) ([e60e456](e60e456)), closes [#80](#80)
* scoping for references to containing declarations ([#708](#708)) ([3762c36](3762c36)), closes [#540](#540)
* show an error if a pure parameter does not have a callable type ([#736](#736)) ([6c52868](6c52868)), closes [#729](#729)
* show error if own declaration has same name as core one ([#762](#762)) ([8cb2120](8cb2120)), closes [#760](#760)
* signature help ([#724](#724)) ([ed33676](ed33676)), closes [#24](#24)
* Source Maps for Code Generation ([#714](#714)) ([64b9e07](64b9e07)), closes [#30](#30)
* tooltips for inlay hints ([#721](#721)) ([3e71cad](3e71cad))
* type checker service ([#722](#722)) ([daad5c4](daad5c4)), closes [#666](#666)
* type checking ([#723](#723)) ([a9eb3bb](a9eb3bb)), closes [#666](#666)
* type checking for list & map literals ([#751](#751)) ([dc14223](dc14223)), closes [#712](#712)
* type hierarchy provider ([#737](#737)) ([9fd5f0c](9fd5f0c)), closes [#681](#681)
* VS Code snippets ([#757](#757)) ([fd6f432](fd6f432)), closes [#756](#756)

### Bug Fixes

* assignability of static type to callable type ([#725](#725)) ([1d17900](1d17900))
* NPEs during validation ([#727](#727)) ([4b8196f](4b8196f))
* prevent overwriting core declarations ([#761](#761)) ([36663ca](36663ca))
* prevent references to following parameters from default values ([#707](#707)) ([182d64b](182d64b)), closes [#540](#540)
* setup of CLI ([#698](#698)) ([0b5d90d](0b5d90d))
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Port type computer to Langium
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