refactor: split chapi helper module

Author: phodal

chapi-helper/build.gradle.kts

@@ -0,0 +1,34 @@
+plugins {
+    java
+    kotlin("jvm")
+    kotlin("plugin.serialization") version "1.6.10"
+
+    `jacoco-conventions`
+}
+
+dependencies {
+    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.3.2")
+    implementation(kotlin("stdlib-jdk8"))
+    implementation(kotlin("reflect"))
+
+    implementation("org.antlr:antlr4:4.11.1")
+    implementation("org.antlr:antlr4-runtime:4.11.1")
+    // Kotlin reflection.
+    implementation(kotlin("test"))
+    implementation(kotlin("test-junit"))
+
+    testImplementation(project(":chapi-ast-java"))
+    testImplementation(project(":chapi-domain"))
+
+    // JUnit 5
+    testImplementation("org.junit.jupiter:junit-jupiter-api:5.6.0")
+    testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:5.6.0")
+    testRuntimeOnly("org.junit.platform:junit-platform-console:1.6.0")
+}
+
+tasks.withType<Test> {
+    useJUnitPlatform()
+    testLogging {
+        events("passed", "skipped", "failed")
+    }
+}

chapi-ast-java/src/main/kotlin/chapi/ast/javaast/TreeViewer.kt renamed to chapi-helper/src/main/kotlin/chapi/ast/helper/TreeViewer.kt

@@ -1,4 +1,4 @@
-package chapi.ast.javaast
+package chapi.ast.helper
 
 import org.antlr.v4.runtime.misc.Utils;
 import org.antlr.v4.runtime.tree.Tree;

chapi-ast-java/src/test/kotlin/chapi/ast/javaast/TreeViewerTest.kt renamed to chapi-helper/src/test/kotlin/chapi/ast/helper/TreeViewerTest.kt

@@ -1,11 +1,13 @@
-package chapi.ast.javaast
+package chapi.ast.helper
 
+import chapi.ast.javaast.JavaAnalyser
 import org.junit.jupiter.api.Test
 
 internal class TreeViewerTest {
     @Test
     fun show() {
-        JavaAnalyser().parse("public class Test { }").let {
+        val javaAnalyser = JavaAnalyser()
+        javaAnalyser.parse("public class Test { }").let {
             val ruleNamesList: List<String> = it.ruleNames.toList()
             println(TreeViewer().toPrettyTree(it.compilationUnit(), ruleNamesList))
         }

settings.gradle.kts

@@ -2,6 +2,7 @@ rootProject.name = "chapi"
 
 include(
     ":chapi-domain",
+    ":chapi-helper",
 // tier 1 languages
     ":chapi-ast-java",
     ":chapi-ast-typescript",