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Handle type parameter types in type checker #877

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lars-reimann opened this issue Feb 10, 2024 · 0 comments · Fixed by #884
Closed

Handle type parameter types in type checker #877

lars-reimann opened this issue Feb 10, 2024 · 0 comments · Fixed by #884
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@lars-reimann
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enhancement 💡 New feature or request released Included in a release
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v0.7.0

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@lars-reimann
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Is your feature request related to a problem?

Use type parameter constraints to check the assignability of some type to a type parameter type and vice versa and between two type parameter types.

Example: Can an attribute of type T (sub String) override an attribute of type String?

Desired solution

Replace the lower type by its upper bound and the upper type by its lower bound.

Possible alternatives (optional)

No response

Screenshots (optional)

No response

Additional Context (optional)

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@lars-reimann lars-reimann added the enhancement 💡 New feature or request label Feb 10, 2024
@lars-reimann lars-reimann added this to the v0.7.0 milestone Feb 10, 2024
@lars-reimann lars-reimann self-assigned this Feb 10, 2024
@lars-reimann lars-reimann changed the title Handle type parameters in type checker Handle type parameter types in type checker Feb 10, 2024
@lars-reimann lars-reimann mentioned this issue Feb 12, 2024
Merged
@lars-reimann lars-reimann linked a pull request Feb 12, 2024 that will close this issue
feat: handle type parameter types in type checker #884
Merged
lars-reimann added a commit that referenced this issue Feb 12, 2024
@lars-reimann
feat: handle type parameter types in type checker (#884)
6b6f738 
Closes #877

### Summary of Changes

The type checker can now properly check assignability of and to type
parameter types.
lars-reimann pushed a commit that referenced this issue Feb 12, 2024
@semantic-release-bot
chore(release): 0.7.0 [skip ci]
e4be7b1 
## [0.7.0](v0.6.0...v0.7.0) (2024-02-12)

### Features

* apply type parameter substitutions of receiver type for member accesses ([#859](#859)) ([5780ed7](5780ed7)), closes [#23](#23)
* check position of usages of variant type parameters ([#852](#852)) ([a2672d7](a2672d7)), closes [#743](#743)
* check whether lower and upper bounds of a type parameter are compatible ([#885](#885)) ([2fc7fe6](2fc7fe6)), closes [#875](#875)
* check whether type parameter bounds are acyclic ([#886](#886)) ([bcf1a4b](bcf1a4b)), closes [#874](#874)
* check whether type parameter bounds are named types ([#878](#878)) ([d8b4168](d8b4168)), closes [#876](#876)
* error if type parameter has multiple lower/upper bounds ([#870](#870)) ([6035b76](6035b76)), closes [#867](#867)
* error if type parameter of class is used in static context ([#830](#830)) ([d5cf420](d5cf420)), closes [#809](#809)
* error if type parameters of functions are variant ([#869](#869)) ([9bf5fec](9bf5fec))
* handle type parameter types in type checker ([#884](#884)) ([6b6f738](6b6f738)), closes [#877](#877)
* handle type parameters (part 1) ([#856](#856)) ([8a35558](8a35558)), closes [#23](#23)
* improve type simplification ([#871](#871)) ([0daafb9](0daafb9))
* Memoization ([#827](#827)) ([d0a6c71](d0a6c71))
* null-safe call & indexed access ([#872](#872)) ([f1420a2](f1420a2)), closes [#857](#857) [#858](#858)
* optional type parameters ([#829](#829)) ([0e9f67a](0e9f67a)), closes [#739](#739)
* optionally generate code without runner integration ([#836](#836)) ([0ed9d6e](0ed9d6e)), closes [#831](#831)
* pre-load all relevant workspace files before executing pipeline ([#822](#822)) ([67ab766](67ab766))
* simplify computed types ([#866](#866)) ([bde3274](bde3274))
* simplify substitutions passed to `computeType` ([#873](#873)) ([aa444d4](aa444d4))
* substitute type parameters when checking assignability of overriding members ([#865](#865)) ([a1f24e0](a1f24e0)), closes [#862](#862)
* substitute type parameters when computing type of inherited members ([#864](#864)) ([33de1e8](33de1e8)), closes [#863](#863)
* support placeholder queries that only request a subset of data ([#826](#826)) ([1e39300](1e39300))
* type casts ([#838](#838)) ([66c3666](66c3666)), closes [#835](#835)

### Bug Fixes

* allow usage of covariant type parameters in own constructor ([#854](#854)) ([4ebae94](4ebae94))
* check for duplicate bounds if type parameters occur as right operand ([#882](#882)) ([8776ce0](8776ce0)), closes [#881](#881)
* generation of static class functions ([#832](#832)) ([57eac45](57eac45))
@lars-reimann lars-reimann added the released Included in a release label Feb 12, 2024
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enhancement 💡 New feature or request released Included in a release
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DSL
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Milestone
v0.7.0
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feat: handle type parameter types in type checker Safe-DS/DSL
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