com.zeoflow.depot.compiler.processing.ksp.KSFileAsOriginatingElement.kt Maven / Gradle / Ivy

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/*
 * Copyright (C) 2021 ZeoFlow SRL
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.zeoflow.depot.compiler.processing.ksp

import com.google.devtools.ksp.symbol.KSFile
import javax.lang.model.element.AnnotationMirror
import javax.lang.model.element.Element
import javax.lang.model.element.ElementKind
import javax.lang.model.element.ElementVisitor
import javax.lang.model.element.Modifier
import javax.lang.model.element.Name
import javax.lang.model.type.TypeMirror

/**
 * When generating java code, JavaPoet only provides an API that receives Element.
 * This wrapper class helps us wrap a KSFile as an originating element and KspFiler unwraps it to
 * get the actual KSFile out of it.
 */
internal data class KSFileAsOriginatingElement(
    val ksFile: KSFile
) : Element {
    override fun getAnnotationMirrors(): List {
        return emptyList()
    }

    override fun  getAnnotation(annotationType: Class?): A? {
        return null
    }

    override fun  getAnnotationsByType(annotationType: Class): Array {
        @Suppress("UNCHECKED_CAST")
        return arrayOfNulls(size = 0) as Array
    }

    override fun asType(): TypeMirror {
        throw UnsupportedOperationException(
            "KSFileAsOriginatingElement cannot be converted to a type"
        )
    }

    override fun getKind(): ElementKind {
        return ElementKind.OTHER
    }

    override fun getModifiers(): Set {
        return emptySet()
    }

    override fun getSimpleName(): Name {
        return NameImpl(ksFile.fileName)
    }

    override fun getEnclosingElement(): Element? {
        return null
    }

    override fun getEnclosedElements(): List {
        return emptyList()
    }

    override fun  accept(v: ElementVisitor?, p: P): R? {
        return null
    }

    private class NameImpl(private val str: String) : Name, CharSequence by str {
        override fun contentEquals(cs: CharSequence): Boolean {
            return str == cs.toString()
        }
    }
}
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