multiplevariabledeclarations.md

No multiple variable declarations

org.openrewrite.staticanalysis.MultipleVariableDeclarations

Places each variable declaration in its own statement and on its own line. Using one variable declaration per line encourages commenting and can increase readability.

Tags

• RSPEC-1659

Source

GitHub, Issue Tracker, Maven Central

• groupId: org.openrewrite.recipe
• artifactId: rewrite-static-analysis
• version: 1.0.1

Example

{% tabs %} {% tab title="Test.java" %}

Before

{% code title="Test.java" %}

class Test {
    int n = 0, m = 0;
    int o = 0, p;
    int s, t = 0;

    public void method() {
        for (int i = 0, j = 0; ; ) ;
    }
}

{% endcode %}

After

{% code title="Test.java" %}

class Test {
    int n = 0;
    int m = 0;
    int o = 0;
    int p;
    int s;
    int t = 0;

    public void method() {
        for (int i = 0, j = 0; ; ) ;
    }
}

{% endcode %}

{% endtab %} {% tab title="Diff" %} {% code %}

--- Test.java
+++ Test.java
@@ -2,3 +2,6 @@
class Test {
-   int n = 0, m = 0;
-   int o = 0, p;
-   int s, t = 0;
+   int n = 0;
+   int m = 0;
+   int o = 0;
+   int p;
+   int s;
+   int t = 0;

{% endcode %} {% endtab %} {% endtabs %}

Usage

This recipe has no required configuration options. It can be activated by adding a dependency on org.openrewrite.recipe:rewrite-static-analysis:1.0.1 in your build file or by running a shell command (in which case no build changes are needed): {% tabs %} {% tab title="Gradle" %} {% code title="build.gradle" %}

plugins {
    id("org.openrewrite.rewrite") version("6.1.4")
}

rewrite {
    activeRecipe("org.openrewrite.staticanalysis.MultipleVariableDeclarations")
}

repositories {
    mavenCentral()
}

dependencies {
    rewrite("org.openrewrite.recipe:rewrite-static-analysis:1.0.1")
}

{% endcode %} {% endtab %} {% tab title="Maven POM" %} {% code title="pom.xml" %}

<project>
  <build>
    <plugins>
      <plugin>
        <groupId>org.openrewrite.maven</groupId>
        <artifactId>rewrite-maven-plugin</artifactId>
        <version>5.2.4</version>
        <configuration>
          <activeRecipes>
            <recipe>org.openrewrite.staticanalysis.MultipleVariableDeclarations</recipe>
          </activeRecipes>
        </configuration>
        <dependencies>
          <dependency>
            <groupId>org.openrewrite.recipe</groupId>
            <artifactId>rewrite-static-analysis</artifactId>
            <version>1.0.1</version>
          </dependency>
        </dependencies>
      </plugin>
    </plugins>
  </build>
</project>

{% endcode %} {% endtab %}

{% tab title="Maven Command Line" %} {% code title="shell" %} You will need to have Maven installed on your machine before you can run the following command.

mvn -U org.openrewrite.maven:rewrite-maven-plugin:run \
  -Drewrite.recipeArtifactCoordinates=org.openrewrite.recipe:rewrite-static-analysis:RELEASE \
  -Drewrite.activeRecipes=org.openrewrite.staticanalysis.MultipleVariableDeclarations

{% endcode %} {% endtab %} {% endtabs %}

Contributors

• Aaron Gershman
• Sam Snyder
• Knut Wannheden

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