rogerkeays / unchecked Goto Github PK
View Code? Open in Web Editor NEWSay goodbye to checked exceptions forever.
Home Page: https://patreon.com/Jamaica440
License: MIT License
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javac warns that catch blocks are unreachable
Test code
try {
assert new String(STARS, "UTF-8").equals("***");
} catch (UnsupportedEncodingException e) {} // okay, never thrown
compiler output
Test.java:18: warning: unreachable catch clause
} catch (UnsupportedEncodingException e) {} // okay, never thrown
^
thrown types have already been caught
other tests show that catch blocks are executed correctly:
for (int i = 0; i < 1; i++) {
try { throw new Exception(); } catch (Exception e) { if (1 == 1) break; }
assert false;
}
fluent breaks some compiler messages: Note: {0} uses or overrides a deprecated API
seen in the tomcat and hibernate build
Note: {0} uses or overrides a deprecated API
implement jshell support
$ jshell -class-path unchecked.jar -C-Xplugin:unchecked -J--add-opens=java.base/jdk.internal.misc=ALL-UNNAMED
| Welcome to JShell -- Version 17.0.2
| For an introduction type: /help intro
jshell> int i = 0;
Exception in thread "main" java.lang.IllegalStateException
at jdk.compiler/com.sun.tools.javac.api.MultiTaskListener.add(MultiTaskListener.java:90)
at jdk.compiler/com.sun.tools.javac.api.BasicJavacTask.addTaskListener(BasicJavacTask.java:124)
at jdk.compiler/com.sun.tools.javac.api.JavacTaskPool.getTask(JavacTaskPool.java:187)
at jdk.jshell/jdk.jshell.TaskFactory.runTask(TaskFactory.java:205)
at jdk.jshell/jdk.jshell.TaskFactory.parse(TaskFactory.java:139)
at jdk.jshell/jdk.jshell.TaskFactory.parse(TaskFactory.java:239)
at jdk.jshell/jdk.jshell.CompletenessAnalyzer.lambda$scan$1(CompletenessAnalyzer.java:96)
at jdk.jshell/jdk.jshell.CompletenessAnalyzer$Parser.disambiguateDeclarationVsExpression(CompletenessAnalyzer.java:758)
at jdk.jshell/jdk.jshell.CompletenessAnalyzer$Parser.parseUnit(CompletenessAnalyzer.java:658)
at jdk.jshell/jdk.jshell.CompletenessAnalyzer.scan(CompletenessAnalyzer.java:97)
at jdk.jshell/jdk.jshell.SourceCodeAnalysisImpl.analyzeCompletion(SourceCodeAnalysisImpl.java:181)
at jdk.jshell/jdk.internal.jshell.tool.JShellTool.isComplete(JShellTool.java:1316)
at jdk.jshell/jdk.internal.jshell.tool.JShellTool.getInput(JShellTool.java:1260)
at jdk.jshell/jdk.internal.jshell.tool.JShellTool.run(JShellTool.java:1209)
at jdk.jshell/jdk.internal.jshell.tool.JShellTool.start(JShellTool.java:995)
at jdk.jshell/jdk.internal.jshell.tool.JShellToolBuilder.start(JShellToolBuilder.java:261)
at jdk.jshell/jdk.internal.jshell.tool.JShellToolProvider.main(JShellToolProvider.java:120)
Requested checked exceptions from IntelliJ
Great work IMHO, but using an IDE seems to make it less usable. Therefore I requested support for this from JetBrains:
This is just to link the ticket with this code. If you are okay, just leave it open until IntelliJ supports or rejects the proposal, feel free to comment it or add improvements.
show warnings for uncaught checked exceptions
seeing as we override the logger, we might be able to intercept exceptions here and convert them into warnings
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