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nullfree's Issues

build.gradle:29: gradle-plugin: support nulls in...

The puzzle 10-f22f4273 from #10 has to be resolved:

nullfree/plugin-gradle/build.gradle

Line 29 in 9e27419

// @todo #10:30m gradle-plugin: support nulls in comparisions

The puzzle was created by @nikialeksey on 07-May-19.

If you have any technical questions, don't ask me, submit new tickets instead. The task will be "done" when the problem is fixed and the text of the puzzle is removed from the source code. Here is more about PDD and about me.

Add README

Need read me for the details of project

Problem with using ssh

Nice tool!
I have a problem with defining my git repository with ssh. Plugin fails if git remote is set via ssh:

[INFO] --- nullfree-maven-plugin:1.4.2:nullfree (default-cli) @ tasks-thing ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  0.699 s
[INFO] Finished at: 2020-02-17T21:50:14+03:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.nikialeksey:nullfree-maven-plugin:1.4.2:nullfree (default-cli) on project tasks-thing: Can not get the origin from git repo.: Can not form the origin url. no protocol: [email protected]:v1690117/tasks-thing.git -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

If I set remote using http everything is fine.

Thanks!

build.gradle:10: maven-plugin: support nulls in comparisions

The puzzle 10-7d5def67 from #10 has to be resolved:

nullfree/plugin-maven/build.gradle

Line 10 in 9e27419

// @todo #10:30m maven-plugin: support nulls in comparisions

The puzzle was created by @nikialeksey on 07-May-19.

If you have any technical questions, don't ask me, submit new tickets instead. The task will be "done" when the problem is fixed and the text of the puzzle is removed from the source code. Here is more about PDD and about me.

Allow !=/== null

Seems, that comparision with null does not do anything harm. So we can add that ability in plugin configs

Dynamic NPE cases

Based on approach taken in

nullfree/lib/src/main/java/com/nikialeksey/nullfree/sources/java/JavaSourceFile.java

Line 63 in d9b270a

for (NullLiteralExpr nullLiteralExpr : StaticJavaParser.parse(stream).findAll(NullLiteralExpr.class)) {

I think the famous NPE is happening 10% because of explicit return null; / x = null; in various flavours,
but 90% due something like HashMap.get("non-existing-key") or getters for non-initialised object fields with defaults, e.g. name in https://www.codebyamir.com/blog/stop-returning-null-in-java

Besides, in the second case, it makes sense to skip/allow != null pattern as comparison doesn't do any harm + it's often unavoidable for an imported library classes you don't control

Show file path when parsing error 

> Task :nullfree FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':nullfree'.
> (line 4,col 10) Parse error. Found  "execute" <IDENTIFIER>, expected "("
  Problem stacktrace :
    com.github.javaparser.GeneratedJavaParser.generateParseException(GeneratedJavaParser.java:10567)
    com.github.javaparser.GeneratedJavaParser.jj_consume_token(GeneratedJavaParser.java:10426)
    com.github.javaparser.GeneratedJavaParser.Parameters(GeneratedJavaParser.java:1286)
    com.github.javaparser.GeneratedJavaParser.MethodDeclaration(GeneratedJavaParser.java:1209)
    com.github.javaparser.GeneratedJavaParser.ClassOrInterfaceBodyDeclaration(GeneratedJavaParser.java:952)
    com.github.javaparser.GeneratedJavaParser.ClassOrInterfaceBody(GeneratedJavaParser.java:846)
    com.github.javaparser.GeneratedJavaParser.ClassOrInterfaceDeclaration(GeneratedJavaParser.java:408)
    com.github.javaparser.GeneratedJavaParser.CompilationUnit(GeneratedJavaParser.java:154)
    com.github.javaparser.JavaParser.parse(JavaParser.java:115)
    com.github.javaparser.JavaParser.parse(JavaParser.java:147)
    com.github.javaparser.JavaParser.parse(JavaParser.java:159)
    com.github.javaparser.StaticJavaParser.parse(StaticJavaParser.java:98)
    com.nikialeksey.nullfree.sources.java.JavaSourceFile.nulls(JavaSourceFile.java:63)
    com.nikialeksey.nullfree.sources.SimpleSources.nulls(SimpleSources.java:66)
    com.nikialeksey.nullfree.SimpleNullfree.badge(SimpleNullfree.java:23)
    com.nikialeksey.nullfree.NullfreePlugin.lambda$apply$1(NullfreePlugin.java:51)
    org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:801)
    org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:768)
    org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:131)
    org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:300)
    org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:292)
    org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:174)
    org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:90)
    org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31)
    org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:120)
    org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:99)
    org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:77)
    org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51)
    org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:59)
    org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
    org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:59)
    org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:101)
    org.gradle.api.internal.tasks.execution.FinalizeInputFilePropertiesTaskExecuter.execute(FinalizeInputFilePropertiesTaskExecuter.java:44)
    org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:91)
    org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:62)
    org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:59)
    org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
    org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
    org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)
    org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter$1.run(EventFiringTaskExecuter.java:51)
    org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:300)
    org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:292)
    org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:174)
    org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:90)
    org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31)
    org.gradle.api.internal.tasks.execution.EventFiringTaskExecuter.execute(EventFiringTaskExecuter.java:46)
    org.gradle.execution.taskgraph.LocalTaskInfoExecutor.execute(LocalTaskInfoExecutor.java:42)
    org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareWorkItemExecutor.execute(DefaultTaskExecutionGraph.java:277)
    org.gradle.execution.taskgraph.DefaultTaskExecutionGraph$BuildOperationAwareWorkItemExecutor.execute(DefaultTaskExecutionGraph.java:262)
    org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$ExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:135)
    org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$ExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:130)
    org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$ExecutorWorker.execute(DefaultTaskPlanExecutor.java:200)
    org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$ExecutorWorker.executeWithWork(DefaultTaskPlanExecutor.java:191)
    org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$ExecutorWorker.run(DefaultTaskPlanExecutor.java:130)
    org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
    org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
    java.lang.Thread.run(Thread.java:748)

This stacktrace should show the problem file path.

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