Moderne licensed

Find raw `try`/`catch` smells

Recipe IDorg.openrewrite.kotlin.functional.FindTryCatchSmells$KtRecipeArtifactio.moderne.recipe:recipes-kotlin

Search-only bundle for try/catch shapes worth reviewing: collapse-to-null and collapse-to-default branches (candidates for runCatching { }.getOrNull() / .getOrDefault(...)), empty catches that lose every detail of the failure, broad catch (Exception) / catch (Throwable) clauses, catches that absorb the exception without logging or rethrowing, e.printStackTrace() calls that should be logger calls, nested try/catch trees, and catch parameters that are bound but never read.

Composite recipeProprietary

Add to your build

Get a download tokenThis recipe is Moderne licensed, so the token must belong to a Moderne customer. It replaces YOUR_DOWNLOAD_TOKEN below.

~/.gradle/gradle.properties

codeGenomeUsername=you@example.com
codeGenomeToken=YOUR_DOWNLOAD_TOKEN

build.gradle.kts

plugins {
    id("org.openrewrite.rewrite") version("latest.release")
}

rewrite {
    activeRecipe("org.openrewrite.kotlin.functional.FindTryCatchSmells$KtRecipe")
}

repositories {
    mavenCentral()
    maven {
        url = uri("https://artifacts.codegenomeproject.org/maven")
        credentials {
            username = providers.gradleProperty("codeGenomeUsername").get()
            password = providers.gradleProperty("codeGenomeToken").get()
        }
    }
}

dependencies {
    rewrite("io.moderne.recipe:recipes-kotlin:0.5.0")
}

Then run

./gradlew rewriteRun

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.FindTryCatchSmells$KtRecipe

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

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

Definition

This recipe runs the following recipes in order.

Find try { x } catch (e: Exception) { null } patternsorg.openrewrite.kotlin.functional.FindTryCatchReturningNull$KtRecipe
Find try { x } catch (e: Exception) { default } patternsorg.openrewrite.kotlin.functional.FindTryCatchReturningDefault$KtRecipe
Find empty catch blocksorg.openrewrite.kotlin.functional.FindTryCatchSwallowingException$KtRecipe
Find broad catch (e: Exception) / catch (e: Throwable) clausesorg.openrewrite.kotlin.functional.FindCatchAllException$KtRecipe
Find non-empty catch blocks that neither log nor rethroworg.openrewrite.kotlin.functional.FindCatchWithoutLogging$KtRecipe
Find e.printStackTrace() calls inside a catch blockorg.openrewrite.kotlin.functional.FindPrintStackTraceInCatch$KtRecipe
Find try { } catch { } nested inside another try { } catch { }org.openrewrite.kotlin.functional.FindNestedTryCatch$KtRecipe
Find catch (e: Exception) clauses whose body never references eorg.openrewrite.kotlin.functional.FindCatchBindingUnusedException$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