Moderne licensed

Find nullability idiom opportunities

Recipe IDorg.openrewrite.kotlin.functional.FindNullabilityErgonomics$KtRecipe

Artifactio.moderne.recipe:recipes-kotlin

Search-only bundle for nullable-handling if/else shapes that map to Kotlin idioms: if (x != null) x else default (use ?:), if (x != null) f(x) else null (use x?.let { f(it) }), if (x == null) throw IllegalArgumentException (use requireNotNull), if (x == null) throw IllegalStateException (use checkNotNull), and if (p(x)) x else null (use x.takeIf { p(it) }).

Composite recipeProprietary

Usage

This recipe has no required configuration options. You’ll need the Moderne CLI configured before running the command below.

mod run . --recipe org.openrewrite.kotlin.functional.FindNullabilityErgonomics$KtRecipe

If the recipe isn’t available locally, install it with:

mod config recipes jar install io.moderne.recipe:recipes-kotlin:0.2.0

Definition

This recipe runs the following recipes in order.

Find if (x != null) x else default patternsorg.openrewrite.kotlin.functional.FindUseElvisForNullableDefault$KtRecipe
Find if (x != null) f(x) else null patternsorg.openrewrite.kotlin.functional.FindUseLetForNullableMap$KtRecipe
Find if (x == null) throw IllegalArgumentException(...) patternsorg.openrewrite.kotlin.functional.FindUseRequireForPrecondition$KtRecipe
Find if (x == null) throw IllegalStateException(...) patternsorg.openrewrite.kotlin.functional.FindUseCheckForState$KtRecipe
Find if (predicate(x)) x else null patternsorg.openrewrite.kotlin.functional.FindUseTakeIfForFilter$KtRecipe

Data tables

Structured output this recipe can produce.

Source files that had resultsSource files that were modified by the recipe run.org.openrewrite.table.SourcesFileResults
Source files that had search resultsSearch results that were found during the recipe run.org.openrewrite.table.SearchResults
Source files that errored on a recipeThe details of all errors produced by a recipe run.org.openrewrite.table.SourcesFileErrors
Recipe performanceStatistics used in analyzing the performance of recipes.org.openrewrite.table.RecipeRunStats