[Maven] Kotlin compiler plugin should respect model's compile source roots

#KT-13995 Fixed

Merge-request: KT-MR-8236
Merged-by: Aleksei Cherepanov <aleksei.cherepanov@jetbrains.com>

libraries/tools/kotlin-maven-plugin-test/src/it/test-enable-extensions-kapt-allopen/pom.xml

@@ -13,7 +13,6 @@
         <junit.version>4.13.1</junit.version>
         <main.class>coffee.CoffeeApp</main.class>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <kotlin.version>1.8.255-SNAPSHOT</kotlin.version>
     </properties>
 
     <dependencies>

libraries/tools/kotlin-maven-plugin-test/src/it/test-respect-compile-source-root/app/pom.xml

@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project
+        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
+        xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.jetbrains.kotlin</groupId>
+    <artifactId>test-respect-compile-source-root-app</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-stdlib</artifactId>
+            <version>${kotlin.version}</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.jetbrains.kotlin</groupId>
+                <artifactId>add-custom-sourceRoots-maven-plugin</artifactId>
+                <version>0.0.1-SNAPSHOT</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>add-custom-sourceRoots</goal>
+                        </goals>
+                    </execution>
+                </executions>
+
+            </plugin>
+            <plugin>
+                <artifactId>kotlin-maven-plugin</artifactId>
+                <groupId>org.jetbrains.kotlin</groupId>
+                <version>${kotlin.version}</version>
+                <executions>
+                    <execution>
+                        <id>compile</id>
+                        <goals>
+                            <goal>compile</goal>
+                        </goals>
+                        <configuration>
+                            <sourceDirs>
+                                <sourceDir>src/main/kotlin</sourceDir>
+                            </sourceDirs>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>

libraries/tools/kotlin-maven-plugin-test/src/it/test-respect-compile-source-root/app/src/main/kotlin/test.kt

@@ -0,0 +1,3 @@
+fun foo(){
+    println("1")
+}

libraries/tools/kotlin-maven-plugin-test/src/it/test-respect-compile-source-root/invoker.properties

@@ -0,0 +1 @@
+invoker.buildResult = failure

libraries/tools/kotlin-maven-plugin-test/src/it/test-respect-compile-source-root/myPlugin/pom.xml

@@ -0,0 +1,37 @@
+<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/maven-v4_0_0.xsd">
+
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>org.jetbrains.kotlin</groupId>
+  <artifactId>add-custom-sourceRoots-maven-plugin</artifactId>
+  <packaging>maven-plugin</packaging>
+  <version>0.0.1-SNAPSHOT</version>
+
+  <name>add-custom-sourceRoots-plugin Maven Mojo</name>
+  <url>http://maven.apache.org</url>
+
+  <properties>
+    <maven.compiler.target>1.8</maven.compiler.target>
+    <maven.compiler.source>1.8</maven.compiler.source>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.apache.maven</groupId>
+      <artifactId>maven-plugin-api</artifactId>
+      <version>${maven.version}</version>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.maven.plugin-tools</groupId>
+      <artifactId>maven-plugin-annotations</artifactId>
+      <version>3.7.0</version>
+      <scope>provided</scope>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.maven</groupId>
+      <artifactId>maven-core</artifactId>
+      <version>${maven.version}</version>
+    </dependency>
+  </dependencies>
+</project>

libraries/tools/kotlin-maven-plugin-test/src/it/test-respect-compile-source-root/myPlugin/src/main/java/AddCustomSourceRootsMojo.java

@@ -0,0 +1,44 @@
+import org.apache.maven.model.Dependency;
+import org.apache.maven.plugin.AbstractMojo;
+import org.apache.maven.plugin.MojoExecutionException;
+import org.apache.maven.plugins.annotations.LifecyclePhase;
+import org.apache.maven.plugins.annotations.Mojo;
+import org.apache.maven.plugins.annotations.Parameter;
+import org.apache.maven.project.MavenProject;
+
+import java.io.*;
+import java.nio.file.Files;
+import java.util.List;
+
+@Mojo(name = "add-custom-sourceRoots", defaultPhase = LifecyclePhase.COMPILE)
+public class AddCustomSourceRootsMojo
+        extends AbstractMojo {
+    @Parameter(defaultValue = "${project}", required = true, readonly = true)
+    public MavenProject project;
+
+    public void execute()
+            throws MojoExecutionException {
+        File targetGeneratedFolder = new File(project.getBasedir().getAbsolutePath(), "target/gen");
+        if (!targetGeneratedFolder.exists()) {
+            if (!targetGeneratedFolder.mkdirs()) {
+                throw new MojoExecutionException("Failed to create target directory.");
+            }
+        }
+        File generatedKtFile = new File(targetGeneratedFolder, "new.kt");
+
+        try {
+            String str = "fun foo(){\n" +
+                    "    println(\"2\")\n" +
+                    "}";
+            BufferedWriter writer = new BufferedWriter(new FileWriter(generatedKtFile));
+            writer.write(str);
+            writer.close();
+        } catch (IOException e) {
+            throw new MojoExecutionException(e.getMessage());
+        }
+
+        getLog().info("path: " + generatedKtFile.getAbsolutePath());
+        project.addCompileSourceRoot(targetGeneratedFolder.getAbsolutePath());
+        getLog().info("CompileSourceRoots: " + project.getCompileSourceRoots().toString());
+    }
+}

libraries/tools/kotlin-maven-plugin-test/src/it/test-respect-compile-source-root/pom.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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>org.jetbrains.kotlin</groupId>
+  <artifactId>test-respect-compile-source-root</artifactId>
+  <version>1.0-SNAPSHOT</version>
+  <modules>
+    <module>myPlugin</module>
+    <module>app</module>
+  </modules>
+  <packaging>pom</packaging>
+
+</project>

libraries/tools/kotlin-maven-plugin-test/src/it/test-respect-compile-source-root/verify.bsh

@@ -0,0 +1,4 @@
+source(new File(basedir, "../../../verify-common.bsh").getAbsolutePath());
+
+assertBuildLogHasLine("[INFO] BUILD FAILURE");
+assertBuildLogHasLineThatContains("Conflicting overloads:");

libraries/tools/kotlin-maven-plugin/src/main/java/org/jetbrains/kotlin/maven/KotlinCompileMojoBase.java

@@ -74,8 +74,10 @@ public abstract class KotlinCompileMojoBase<A extends CommonCompilerArguments> e
     private boolean multiPlatform = false;
 
     protected List<String> getSourceFilePaths() {
-        if (sourceDirs != null && !sourceDirs.isEmpty()) return sourceDirs;
+        List<String> list = new ArrayList<>();
-        return project.getCompileSourceRoots();
+        if (sourceDirs != null && !sourceDirs.isEmpty()) list.addAll(sourceDirs);
+        list.addAll(project.getCompileSourceRoots());
+        return list;
     }
 
     @NotNull