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Add @Nullable annotations #43393

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Shadow-Devil
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Purpose

Adds @nullable annotations where null values are passed as arguments or assigned to variables.

Fixes #43386

Approach

Let IntelliJ generate the @nullable annotations based on its static analysis

Samples

Provide high-level details about the samples related to this feature.

Remarks

List any other known issues, related PRs, TODO items, or any other notes related to the PR.

Check List

  • Read the Contributing Guide
  • Updated Change Log
  • Checked Tooling Support (#)
  • Added necessary tests
    • Unit Tests
    • Spec Conformance Tests
    • Integration Tests
    • Ballerina By Example Tests
  • Increased Test Coverage
  • Added necessary documentation
    • API documentation
    • Module documentation in Module.md files
    • Ballerina By Examples

@gimantha
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gimantha commented Nov 5, 2024

@Shadow-Devil Shall we check on the build failures in github actions?

@Shadow-Devil
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Some libraries fail because of Spotbugs errors. They are using methods that are now annotated with @Nullable and they dont check it.

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codecov bot commented Nov 5, 2024

Codecov Report

Attention: Patch coverage is 70.90909% with 48 lines in your changes missing coverage. Please review.

Project coverage is 77.56%. Comparing base (2f3cada) to head (7981b28).
Report is 1 commits behind head on master.

Files with missing lines Patch % Lines
...rc/main/java/io/ballerina/projects/BalaWriter.java 12.50% 6 Missing and 1 partial ⚠️
.../java/org/ballerinalang/toml/model/Dependency.java 25.00% 6 Missing ⚠️
...allerina/compiler/api/impl/ExpectedTypeFinder.java 20.00% 0 Missing and 4 partials ⚠️
...rc/main/java/io/ballerina/cli/cmd/CommandUtil.java 66.66% 3 Missing ⚠️
...internal/repositories/RemotePackageRepository.java 0.00% 3 Missing ⚠️
...o/ballerina/cli/task/CreateTestExecutableTask.java 0.00% 1 Missing and 1 partial ⚠️
...rc/main/java/io/ballerina/cli/utils/TestUtils.java 0.00% 1 Missing and 1 partial ⚠️
...l/type/builders/BallerinaSingletonTypeBuilder.java 0.00% 1 Missing and 1 partial ⚠️
...main/java/io/ballerina/projects/ModuleContext.java 66.66% 1 Missing and 1 partial ⚠️
...o/ballerina/projects/internal/BlendedManifest.java 60.00% 0 Missing and 2 partials ⚠️
... and 12 more
Additional details and impacted files
@@             Coverage Diff              @@
##             master   #43393      +/-   ##
============================================
- Coverage     77.56%   77.56%   -0.01%     
+ Complexity    58736    58733       -3     
============================================
  Files          3447     3447              
  Lines        219658   219665       +7     
  Branches      28916    28914       -2     
============================================
- Hits         170382   170375       -7     
- Misses        39886    39899      +13     
- Partials       9390     9391       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

@Shadow-Devil
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@gimantha required pipeline went through but some std libs will require some adjustments since they use methods that are now annotated with @Nullable so spotbugs complaints

Shadow-Devil and others added 6 commits November 13, 2024 17:00
# Conflicts:
#	bvm/ballerina-profiler/src/main/java/module-info.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/api/Runtime.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/api/async/StrandMetadata.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/api/concurrent/StrandMetadata.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/api/creators/ValueCreator.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/api/utils/JsonUtils.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/BalRuntime.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/launch/LaunchUtils.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/scheduling/AsyncUtils.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/scheduling/Scheduler.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/scheduling/Strand.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/scheduling/WDChannels.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/scheduling/WorkerDataChannel.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/types/BFunctionType.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/types/BIntersectionType.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/types/BNullType.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/types/BObjectType.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/values/AbstractArrayValue.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/values/ArrayValueImpl.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/values/AttributeMapValueImpl.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/values/DecimalValue.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/values/ErrorValue.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/values/FPValue.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/values/FutureValue.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/values/MapValueImpl.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/values/StreamValue.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/values/TableValueImpl.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/values/TupleValueImpl.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/values/ValueCreator.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/values/XmlSequence.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/internal/values/XmlValue.java
#	bvm/ballerina-runtime/src/main/java/io/ballerina/runtime/transactions/TransactionResourceManager.java
#	bvm/ballerina-runtime/src/main/java/module-info.java
#	compiler/ballerina-lang/src/main/java/io/ballerina/projects/ModuleContext.java
#	compiler/ballerina-lang/src/main/java/io/ballerina/projects/Package.java
#	compiler/ballerina-lang/src/main/java/io/ballerina/projects/PackageConfig.java
#	compiler/ballerina-lang/src/main/java/io/ballerina/projects/PackageContext.java
#	compiler/ballerina-lang/src/main/java/io/ballerina/projects/PackageManifest.java
#	compiler/ballerina-lang/src/main/java/io/ballerina/projects/internal/ManifestBuilder.java
#	compiler/ballerina-lang/src/main/java/io/ballerina/projects/internal/ModuleData.java
#	compiler/ballerina-lang/src/main/java/io/ballerina/projects/internal/PackageData.java
#	compiler/ballerina-lang/src/main/java/io/ballerina/projects/internal/ProjectFiles.java
#	compiler/ballerina-lang/src/main/java/org/wso2/ballerinalang/compiler/bir/codegen/JvmTerminatorGen.java
#	compiler/ballerina-lang/src/main/java/org/wso2/ballerinalang/compiler/bir/codegen/methodgen/FrameClassGen.java
#	compiler/ballerina-lang/src/main/java/org/wso2/ballerinalang/compiler/bir/codegen/methodgen/MethodGen.java
#	compiler/ballerina-lang/src/main/java/org/wso2/ballerinalang/compiler/bir/codegen/methodgen/MethodGenUtils.java
#	compiler/ballerina-lang/src/main/java/org/wso2/ballerinalang/compiler/bir/model/BIRTerminator.java
#	langlib/lang.__internal/src/main/java/org/ballerinalang/langlib/internal/WorkerChannels.java
#	langlib/lang.map/src/main/java/org/ballerinalang/langlib/map/Next.java
#	langlib/lang.value/src/main/java/org/ballerinalang/langlib/value/FromJsonDecimalString.java
#	langlib/lang.value/src/main/java/org/ballerinalang/langlib/value/FromJsonFloatString.java
#	langlib/lang.value/src/main/java/org/ballerinalang/langlib/value/FromJsonString.java
#	langlib/lang.xml/src/main/java/org/ballerinalang/langlib/xml/Map.java
#	langlib/lang.xml/src/main/java/org/ballerinalang/langlib/xml/Next.java
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[Improvement]: Add jetbrains annotations to the classpath dependencies for @NotNull and @Nullable annotations
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