我正在尝试编写一个插件，以向Kotlin项目添加模拟数据。第一部分涉及查找当前项目中所有继承特定基类的Kotlin类。我希望能够解析这些类以读取注释的值并获取构造函数的结构。然后使用这些信息将代码添加到项目中，向模拟数据库实例添加所选类的实例。
我一直在使用PsiViewer插件来检查Kotlin类文件中的PSI树。为了访问KtFile、KtClass等，我在我的build-gradle文件中添加了对"org.jetbrains.kotlin:kotlin-compiler-embeddable"的依赖。这似乎很好，直到我尝试运行插件时。例如，当我使用psiFile is KtFile时，我永远无法匹配。我仍然通过简单解析text字段获得正确的PsiFile实例，但是当我尝试转换PsiFile实例时，会出现以下异常：
java.lang.ClassCastException: class org.jetbrains.kotlin.psi.KtFile cannot be cast to class org.jetbrains.kotlin.psi.KtFile (org.jetbrains.kotlin.psi.KtFile is in unnamed module of loader com.intellij.ide.plugins.cl.PluginClassLoader @2ed18f3d; org.jetbrains.kotlin.psi.KtFile is in unnamed module of loader com.intellij.ide.plugins.cl.PluginClassLoader @4308c14c)
我目前正在使用的是 IntelliJ IDEA 2019.2.3。尝试使用了不同版本的 Kotlin 插件（1.3.31 和 1.3.41）。运行在 Windows 10 上。
build.gradle
plugins {
id 'java'
id 'org.jetbrains.intellij' version '0.4.11'
id 'org.jetbrains.kotlin.jvm' version '1.3.31'
}
group 'se.winassist'
version '1.0'
sourceCompatibility = 1.8
repositories {
mavenCentral()
}
dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
implementation "org.jetbrains.kotlin:kotlin-compiler-embeddable:1.3.31"
testCompile group: 'junit', name: 'junit', version: '4.12'
}
// See https://github.com/JetBrains/gradle-intellij-plugin/
intellij {
version '2019.2.3'
}
compileKotlin {
kotlinOptions.jvmTarget = "1.8"
}
compileTestKotlin {
kotlinOptions.jvmTarget = "1.8"
}
patchPluginXml {
changeNotes """
Add change notes here.<br>
<em>most HTML tags may be used</em>"""
}
CreateMockdataFromPostgreSQLClass.kt:
import com.intellij.openapi.actionSystem.AnAction
import com.intellij.openapi.actionSystem.AnActionEvent
import com.intellij.openapi.actionSystem.CommonDataKeys
import com.intellij.openapi.ui.Messages
import org.jetbrains.kotlin.psi.KtFile
class CreateMockdataFromPostgreSQLClass: AnAction() {
override fun actionPerformed(e: AnActionEvent) {
val project = e.getRequiredData(CommonDataKeys.PROJECT)
val kotlinFileHandler = KotlinFileHandler(project)
val dbClasses = kotlinFileHandler.getAllKotlinDbClasses()
val classNames = dbClasses.map {
val ktFile = it as KtFile
ktFile.name
}.joinToString(separator = "\n")
Messages.showInfoMessage(classNames, "Test")
}
}
KotlinFileHandler.kt:
import com.intellij.openapi.project.Project
import com.intellij.openapi.roots.ProjectRootManager
import com.intellij.psi.PsiDirectory
import com.intellij.psi.PsiFile
import com.intellij.psi.PsiManager
data class KotlinFileHandler(val aProject: Project) {
fun getAllKotlinDbClasses(): List<PsiFile> {
val roots = ProjectRootManager.getInstance(aProject).contentSourceRoots
val dirs = roots.map { PsiManager.getInstance(aProject).findDirectory(it) }
val result = mutableListOf<PsiFile>()
getKotlinDbClassesInPsiDir(result, dirs)
return result.toList()
}
private tailrec fun getKotlinDbClassesInPsiDir(aResult: MutableList<PsiFile>, aPsiDirectoryList: List<PsiDirectory?>) {
if (aPsiDirectoryList.isEmpty()) return
val subDirectories = mutableListOf<PsiDirectory>()
aPsiDirectoryList.filter { it != null }.forEach {
val children = it!!.children
val files = children.filter {
it is PsiFile && it.language.toString().toLowerCase() == "language: kotlin"
}.map { it as PsiFile }
subDirectories += children.filter { it is PsiDirectory }.map { it as PsiDirectory }
aResult += files.filter {
hasBasePersistenceSuperclass(it) && hasTableNameAnnotation(it)
}.toList()
}
getKotlinDbClassesInPsiDir(aResult, subDirectories)
}
}
我认为我没有正确设置Gradle。我已经广泛寻找了适当的设置，但未能找到可行的解决方案。有人可以指导我正确设置Gradle吗？