Object only used in String template is marked as unused about manifold-ij

[EotT123]

An even worse case:
Using a static method call inside a String template expression, e.g.

String text = "${StringUtils.substring(value, 1)}"

If StringUtils class is not used elsewhere, it is marked as unused. If configured in IntelliJ, it gets removed automatically from the list of imports, resulting in a compilation failure.

[rsmckinney]

I am not seeing any of this, all of this is implemented.

What version of the plugin / IJ / etc. are you using?

[EotT123]

Latest version of everything:

• Manifold plugin: 2024.1.5
• IntelliJ IDEA 2024.1.2 (Community Edition)

This also happens for me with the sample project:

[rsmckinney]

Looking at your earlier screenshots, it appears string templates aren't really enabled, for instance local var usage s/b highlighted. This is probably the root of the problem. Can you provide your build file[s]? A simple change will probably fix things up for you.

[EotT123]

It is enabled. Using the manifold-strings-test project (I didn't change anything), all tests pass successfully, but the 'never used' warning is still present.

Edit:
For some reason, it's highlighted now and the warning dissapeared.

However, it's not fixed everywhere. Method parameters still don't get marked as being used:

So now I'm not sure anymore what the config should be. When looking at the documentation, I see that only an annotated processor is added:

<annotationProcessorPaths>
  <path>
    <groupId>systems.manifold</groupId>
    <artifactId>manifold-strings</artifactId>
    <version>${manifold.version}</version>
  </path>
</annotationProcessorPaths>

However, I don't see this in the manifold-strings-test project; it is only added as a dependency.
As a test, I've added them both, but it didn't change anything:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>test</groupId>
    <artifactId>test</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <manifold.version>2024.1.17</manifold.version>
        <maven.compiler.source>22</maven.compiler.source>
    </properties>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.0</version>
                <configuration>
                    <encoding>UTF-8</encoding>
                    <compilerArgs>
                        <arg>-Xplugin:Manifold</arg>
                    </compilerArgs>
                    <annotationProcessorPaths>
                        <path>
                            <groupId>systems.manifold</groupId>
                            <artifactId>manifold-strings</artifactId>
                            <version>${manifold.version}</version>
                        </path>
                    </annotationProcessorPaths>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <dependencies>
        <dependency>
            <groupId>systems.manifold</groupId>
            <artifactId>manifold-strings</artifactId>
            <version>${manifold.version}</version>
        </dependency>
    </dependencies>
</project>

It looks like only the dependency is needed, not the annotationProcessorPath.

---

edit2: It does work when I add it in the manifold-strings-test project:

[rsmckinney]

Yeah, most of the test modules aren't setup for IntelliJ use. Always refer to the setup docs for manifold features. In this case, see the manifold-strings setup docs. Also see the android docs if you're working in that environment.

[superxiao]

I have the same issue. Intellij thinks a static function that's used in a string template as unused, and removes it when organizing imports. Intellij manifold plugin version 2024.1.6, pom.xml:

  <properties>
    <manifold.version>2024.1.21</manifold.version>
  </properties>
  <dependencies>
    <dependency>
      <groupId>systems.manifold</groupId>
      <artifactId>manifold-ext-rt</artifactId>
      <version>${manifold.version}</version>
    </dependency>
    <dependency>
      <groupId>systems.manifold</groupId>
      <artifactId>manifold-rt</artifactId>
      <version>${manifold.version}</version>
    </dependency>
    <dependency>
      <groupId>systems.manifold</groupId>
      <artifactId>manifold-collections</artifactId>
      <version>${manifold.version}</version>
    </dependency>
    <dependency>
      <groupId>systems.manifold</groupId>
      <artifactId>manifold-strings</artifactId>
      <version>${manifold.version}</version>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.11.0</version>
        <configuration>
          <source>17</source>
          <target>17</target>
          <encoding>UTF-8</encoding>
          <compilerArgs>
            <!-- Configure manifold plugin -->
            <arg>-Xplugin:Manifold</arg>
          </compilerArgs>
          <annotationProcessorPaths>
            <path>
              <groupId>systems.manifold</groupId>
              <artifactId>manifold</artifactId>
              <version>${manifold.version}</version>
            </path>
            <path>
              <groupId>systems.manifold</groupId>
              <artifactId>manifold-ext</artifactId>
              <version>${manifold.version}</version>
            </path>
            <path>
              <groupId>systems.manifold</groupId>
              <artifactId>manifold-strings</artifactId>
              <version>${manifold.version}</version>
            </path>
            <path>
              <groupId>systems.manifold</groupId>
              <artifactId>manifold-exceptions</artifactId>
              <version>${manifold.version}</version>
            </path>
          </annotationProcessorPaths>
        </configuration>
      </plugin>
    </plugins>
  </build>