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odenix
dc9003d0f1
Motivation:
Config.as() causes nullness warnings when its result is intentionally assigned
to a non-null variable
Changes:
* Introduce Config.asNullable(Class<T>), asNullable(JavaType<T>), and
asNullable(Type) to explicitly opt into nullable values
* Keep the signatures of Config.as(Class<T>) and Config.as(JavaType<T>)
unchanged from 0.31 by adding @NullUnmarked
* This gives users time to migrate from as() to asNullable() where appropriate
* Avoids introducing new spurious warnings
* Change `<T> T Config.as(Type)` to `<T extends @nullable Object> T Config.as(Type)`
* This overload is typically used by reflective code such as
pkl-config-kotlin's Config.to() rather than directly by user code
* Clarify that JavaType<T> represents a non-null top-level type whose type arguments may be nullable
* Restricting <T> to non-null keeps method signatures understandable for humans and tools
* Enables full symmetry between Class<T> and JavaType<T> overloads in Config and JavaType
* Enables future non-null runtime checks in both Config.as() overloads
* Simplify construction of `JavaType`s with nullable type arguments
* Add ofNullable() variants for most factory methods, e.g., JavaType.listOfNullable()
* Overhaul Javadoc of Config and JavaType
Result:
* Clear separation between accessing nullable and non-null values
* Config.as() is used for the common non-null case
* Config.as() can perform non-null runtime checks in a future release (breaking change)
* More ergonomic construction of types with nullable type arguments
* More detailed and consistent documentation
= image:.idea/icon.svg[Pkl,30] Pkl
:uri-homepage: https://pkl-lang.org
:uri-docs: {uri-homepage}/main/current
:uri-docs-introduction: {uri-docs}/introduction
:uri-docs-release-notes: {uri-docs}/release-notes
:uri-docs-language: {uri-docs}/language
:uri-docs-tools: {uri-docs}/tools
:uri-github-issue: https://github.com/apple/pkl/issues
:uri-github-discussions: https://github.com/apple/pkl/discussions
:uri-pkl-examples: https://pkl-lang.org/main/current/examples.html
:uri-installation: https://pkl-lang.org/main/current/pkl-cli/index.html#installation
:uri-lang-reference: https://pkl-lang.org/main/current/language-reference/index.html
:uri-ci-artifacts: https://s01.oss.sonatype.org/content/groups/public/org/pkl-lang/
:uri-ci-pipeline: https://github.com/apple/pkl/actions
A configuration as code language with rich validation and tooling.
== Quick Links
* {uri-installation}[Installation]
* {uri-lang-reference}[Language Reference]
== Documentation
* {uri-homepage}[Home Page]
** {uri-docs-introduction}[Introduction]
** {uri-docs-language}[Language]
** {uri-docs-tools}[Tools]
** {uri-pkl-examples}[Examples]
** {uri-docs-release-notes}[Release Notes]
== Community
We'd love to hear from you!
* Create an {uri-github-issue}[issue]
* Ask a question on {uri-github-discussions}[GitHub Discussions]
== Development
image:https://github.com/apple/pkl/actions/workflows/main.yml/badge.svg?style=svg["Build (main)", link="https://github.com/apple/pkl/actions/workflows/main.yml"]
* link:CONTRIBUTING.adoc[] for tips on pull requests and filing issues
* link:DEVELOPMENT.adoc[] for build instructions
* {uri-ci-artifacts}[Sonatype Repository] for the artifacts/binaries built by our {uri-ci-pipeline}[CI pipelines] (and those of our other tools and packages repositories).
== Pkl GitHub Repositories
[%autowidth]
|===
|Name |Description
|`apple/pkl`
|A configuration as code language with rich validation and tooling.
|https://github.com/apple/pkl-evolution[`apple/pkl-evolution`]
|Suggested Pkl Improvements, Changes, or Enhancements (SPICEs)
|https://github.com/apple/pkl-go[`apple/pkl-go`]
|Pkl bindings for the Go programming language
|https://github.com/apple/pkl-go-examples[`apple/pkl-go-examples`]
|Examples for using Pkl within Go applications
|https://github.com/apple/highlightjs-pkl[`apple/highlightjs-pkl`]
|Highlight.js syntax highlighting for Pkl
|https://github.com/apple/pkl-intellij[`apple/pkl-intellij`]
|JetBrains editor plugins providing Pkl language support
|https://github.com/apple/pkl-jvm-examples[`apple/pkl-jvm-examples`]
|Examples for using Pkl within JVM applications
|https://github.com/apple/pkl-k8s[`apple/pkl-k8s`]
|Templates for using Pkl with Kubernetes
|https://github.com/apple/pkl-k8s-examples[`apple/pkl-k8s-examples`]
|Examples for using Pkl with Kubernetes
|https://github.com/apple/pkl-lang.org[`apple/pkl-lang.org`]
|The pkl-lang.org website
|https://github.com/apple/pkl-lsp[`apple/pkl-lsp`]
|Language server for Pkl, implementing the server-side of the Language Server Protocol
|https://github.com/apple/pkl-neovim[`apple/pkl-neovim`]
|Pkl language support for Neovim
|https://github.com/apple/pkl-package-docs[`apple/pkl-package-docs`]
|Documentation for Pkl packages
|https://github.com/apple/pkl-pantry[`apple/pkl-pantry`]
|Shared Pkl packages
|https://github.com/apple/pkl-project-commons[`apple/pkl-project-commons`]
|Utility libraries for Pkl
|https://github.com/apple/pkl-readers[`apple/pkl-readers`]
|Shared Pkl https://pkl-lang.org/main/current/language-reference/index.html#external-readers[external reader] tools
|https://github.com/apple/pkl-spring[`apple/pkl-spring`]
|Spring Boot extension for configuring Boot apps with Pkl
|https://github.com/apple/pkl-swift[`apple/pkl-swift`]
|Pkl bindings for the Swift programming language
|https://github.com/apple/pkl-swift-examples[`apple/pkl-swift-examples`]
|Examples for using Pkl within Swift applications
|https://github.com/apple/pkl-vscode[`apple/pkl-vscode`]
|Pkl language support for VS Code
|https://github.com/apple/pkl.tmbundle[`apple/pkl.tmbundle`]
|TextMate bundle for Pkl
|https://github.com/apple/tree-sitter-pkl[`apple/tree-sitter-pkl`]
|Tree-sitter parser for Pkl
|https://github.com/apple/rules_pkl[`apple/rules_pkl`]
|Bazel build rules for Pkl
|===