A java project containing necessary classes missing from the base java implementation
License: MIT License
Add logic for running tests simply
new should be made private. Ok and Err should have of functions which return a result.
This will remove some issues using Result in streams, where the compiler would be unhappy about the mismatch between Ok and Err (for example, in a CompletableFuture, a .thenApply(Ok::new).exceptionally(Err::new) would not be accepted by the compiler. by switching new with a function which returns a Result, the compiler is happy again.
Additionally, this will have the Result class more closely map to the Optional class, which uses of for creating a new optional.
There can be documentation on java modules. Figure out where to add it and add it!
gradle assemble fails with the following error message:
:compileJava UP-TO-DATE
:processResources NO-SOURCE
:classes UP-TO-DATE
:jar UP-TO-DATE
:javadocjavadoc: error - An exception occurred while building a component: MethodsSummary
(java.lang.NullPointerException)
Please file a bug against the javadoc tool via the Java bug reporting page
(http://bugreport.java.com) after checking the Bug Database (http://bugs.java.com)
for duplicates. Include error messages and the following diagnostic in your report. Thank you.
java.lang.NullPointerException
at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.util.Utils.getEnclosingTypeElement(Utils.java:2574)
at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.util.CommentHelper.getReferencedClass(CommentHelper.java:371)
at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.HtmlDocletWriter.seeTagToContent(HtmlDocletWriter.java:1510)
at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.HtmlDocletWriter$2.visitLink(HtmlDocletWriter.java:1949)
at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.HtmlDocletWriter$2.visitLink(HtmlDocletWriter.java:1797)
at jdk.compiler/com.sun.tools.javac.tree.DCTree$DCLink.accept(DCTree.java:500)
at jdk.compiler/com.sun.source.util.SimpleDocTreeVisitor.visit(SimpleDocTreeVisitor.java:79)
at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.HtmlDocletWriter.commentTagsToContent(HtmlDocletWriter.java:2017)
at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.HtmlDocletWriter.addCommentTags(HtmlDocletWriter.java:1719)
at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.HtmlDocletWriter.addCommentTags(HtmlDocletWriter.java:1700)
at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.HtmlDocletWriter.addSummaryComment(HtmlDocletWriter.java:1670)
at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.SubWriterHolderWriter.addIndexComment(SubWriterHolderWriter.java:207)
at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.SubWriterHolderWriter.addSummaryLinkComment(SubWriterHolderWriter.java:243)
at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.AbstractMemberWriter.addMemberSummary(AbstractMemberWriter.java:533)
at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.builders.MemberSummaryBuilder.buildSummary(MemberSummaryBuilder.java:359)
at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.builders.MemberSummaryBuilder.addSummary(MemberSummaryBuilder.java:515)
at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.builders.MemberSummaryBuilder.buildMethodsSummary(MemberSummaryBuilder.java:309)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.builders.AbstractBuilder.build(AbstractBuilder.java:157)
at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.builders.AbstractMemberBuilder.build(AbstractMemberBuilder.java:87)
at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.builders.AbstractBuilder.buildChildren(AbstractBuilder.java:200)
at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.builders.ClassBuilder.buildMemberSummary(ClassBuilder.java:333)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.builders.AbstractBuilder.build(AbstractBuilder.java:157)
at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.builders.AbstractBuilder.buildChildren(AbstractBuilder.java:200)
at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.builders.ClassBuilder.buildClassDoc(ClassBuilder.java:155)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:564)
at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.builders.AbstractBuilder.build(AbstractBuilder.java:157)
at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.builders.ClassBuilder.build(ClassBuilder.java:125)
at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.HtmlDoclet.generateClassFiles(HtmlDoclet.java:263)
at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.AbstractDoclet.generateClassFiles(AbstractDoclet.java:286)
at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.AbstractDoclet.generateClassFiles(AbstractDoclet.java:268)
at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.AbstractDoclet.startGeneration(AbstractDoclet.java:207)
at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.AbstractDoclet.run(AbstractDoclet.java:117)
at jdk.javadoc/jdk.javadoc.doclet.StandardDoclet.run(StandardDoclet.java:72)
at jdk.javadoc/jdk.javadoc.internal.tool.Start.parseAndExecute(Start.java:574)
at jdk.javadoc/jdk.javadoc.internal.tool.Start.begin(Start.java:423)
at jdk.javadoc/jdk.javadoc.internal.tool.Start.begin(Start.java:340)
at jdk.javadoc/jdk.javadoc.internal.tool.Main.execute(Main.java:63)
at jdk.javadoc/jdk.javadoc.internal.tool.Main.main(Main.java:52)
1 error
:javadoc FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':javadoc'.
> Javadoc generation failed. Generated Javadoc options file (useful for troubleshooting): 'XXX/org.farwind.util/build/tmp/javadoc/javadoc.options'
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 5s
3 actionable tasks: 1 executed, 2 up-to-date
This appears to be an internal javadoc error, which appears to be related to JDK-8188248.
In rust, a lot of libraries define their own Result type in the following Manner:
pub type Result<T> = Result<T, MyErrorType>;I would like custom result types to be as easy to define for this java library, but that would require letting some subtyping occur.
a lot of the variable names are direct copies of the rust name. While snake_case has been switched to whateverThisCaseIs, there's still a decent amount to switch over.
uhh...yeah. Opps.
Ok and Err currently do not have descriptions in the javadoc. Documentation should be added for these two variants of Result.
Additionally, the documentation for the Result class should be cleaned up as well. It's not particularly good.
The main code does not have a function which will throw the contained error. Add code to throw the contained error.
Ok should have a hashcode value Objects.hashCode(t).
What should Err's hashCode be?
Currently I've been building this by hand. There should be some sort of official build system -- either, maven, ant, or the other one.
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