Finish extraction of PropertyGenerator to no-elements/no-kotlin-metadata
This commit is contained in:
Zac Sweers
parent
be6c7c190c
commit
98c7d7e71c
7 changed files with 230 additions and 191 deletions
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@ -30,6 +30,7 @@ import javax.annotation.processing.RoundEnvironment
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import javax.lang.model.SourceVersion
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import javax.lang.model.element.Element
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import javax.lang.model.element.TypeElement
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import javax.lang.model.element.VariableElement
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import javax.tools.Diagnostic.Kind.ERROR
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/**
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@ -111,7 +112,7 @@ class JsonClassCodegenProcessor : KotlinAbstractProcessor(), KotlinMetadataUtils
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for ((name, parameter) in type.constructor.parameters) {
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if (type.properties[parameter.name] == null && !parameter.hasDefault) {
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messager.printMessage(
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ERROR, "No property for required constructor parameter $name" /*, parameter.element // TODO how do we pass this? */)
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ERROR, "No property for required constructor parameter $name", parameter.tag<VariableElement>())
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return null
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}
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}
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@ -1,158 +0,0 @@
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/*
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* Copyright (C) 2018 Square, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.squareup.moshi.kotlin.codegen
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import com.google.auto.common.AnnotationMirrors
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import com.squareup.kotlinpoet.AnnotationSpec
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import com.squareup.kotlinpoet.KModifier
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import com.squareup.kotlinpoet.TypeName
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import com.squareup.moshi.Json
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import com.squareup.moshi.JsonQualifier
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import com.squareup.moshi.kotlin.codegen.api.DelegateKey
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import com.squareup.moshi.kotlin.codegen.api.PropertyGenerator
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import com.squareup.moshi.kotlin.codegen.api.TargetParameter
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import javax.annotation.processing.Messager
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import javax.lang.model.element.AnnotationMirror
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import javax.lang.model.element.Element
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import javax.lang.model.element.ExecutableElement
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import javax.lang.model.element.Modifier
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import javax.lang.model.element.VariableElement
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import javax.tools.Diagnostic
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/** A property in user code that maps to JSON. */
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internal data class TargetProperty constructor(
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val name: String,
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val type: TypeName,
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private val parameter: TargetParameter?,
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private val annotationHolder: ExecutableElement?,
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private val field: VariableElement?,
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private val setter: ExecutableElement?,
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private val getter: ExecutableElement?,
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private val visibility: KModifier
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) {
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val parameterIndex get() = parameter?.index ?: -1
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val hasDefault get() = parameter?.hasDefault ?: true
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private val isTransient get() = field != null && Modifier.TRANSIENT in field.modifiers
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private val element get() = field ?: setter ?: getter!!
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private val isSettable get() = setter != null || parameter != null
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private val isVisible: Boolean
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get() {
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return visibility == KModifier.INTERNAL
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|| visibility == KModifier.PROTECTED
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|| visibility == KModifier.PUBLIC
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}
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/**
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* Returns a generator for this property, or null if either there is an error and this property
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* cannot be used with code gen, or if no codegen is necessary for this property.
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*/
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fun generator(messager: Messager): PropertyGenerator? {
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if (isTransient) {
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if (!hasDefault) {
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messager.printMessage(
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Diagnostic.Kind.ERROR, "No default value for transient property ${this}", element)
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return null
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}
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return null // This property is transient and has a default value. Ignore it.
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}
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if (!isVisible) {
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messager.printMessage(Diagnostic.Kind.ERROR, "property ${this} is not visible", element)
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return null
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}
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if (!isSettable) {
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return null // This property is not settable. Ignore it.
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}
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val jsonQualifierMirrors = jsonQualifiers()
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// TODO Can we check this after? Should we move this check to jsonQualifiers?
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// for (jsonQualifier in jsonQualifierMirrors) {
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// // Check Java types since that covers both Java and Kotlin annotations.
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// annotationElement.getAnnotation(Retention::class.java)?.let {
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// if (it.value != RetentionPolicy.RUNTIME) {
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// messager.printMessage(Diagnostic.Kind.ERROR,
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// "JsonQualifier @${jsonQualifier.simpleName} must have RUNTIME retention")
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// }
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// }
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// annotationElement.getAnnotation(Target::class.java)?.let {
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// if (ElementType.FIELD !in it.value) {
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// messager.printMessage(Diagnostic.Kind.ERROR,
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// "JsonQualifier @${jsonQualifier.simpleName} must support FIELD target")
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// }
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// }
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// }
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val jsonQualifierSpecs = jsonQualifierMirrors.map {
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it.toBuilder()
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.useSiteTarget(AnnotationSpec.UseSiteTarget.FIELD)
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.build()
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}
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return PropertyGenerator(this,
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DelegateKey(type, jsonQualifierSpecs))
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}
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/** Returns the JsonQualifiers on the field and parameter of this property. */
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private fun jsonQualifiers(): Set<AnnotationSpec> {
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val elementQualifiers = element.qualifiers
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val annotationHolderQualifiers = annotationHolder.qualifiers
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val parameterQualifiers = parameter?.qualifiers.orEmpty()
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// TODO(jwilson): union the qualifiers somehow?
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return when {
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elementQualifiers.isNotEmpty() -> elementQualifiers.mapTo(mutableSetOf()) { AnnotationSpec.get(it) }
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annotationHolderQualifiers.isNotEmpty() -> annotationHolderQualifiers.mapTo(mutableSetOf()) { AnnotationSpec.get(it) }
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parameterQualifiers.isNotEmpty() -> parameterQualifiers
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else -> setOf()
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}
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}
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private val Element?.qualifiers: Set<AnnotationMirror>
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get() {
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if (this == null) return setOf()
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return AnnotationMirrors.getAnnotatedAnnotations(this, JsonQualifier::class.java)
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}
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/** Returns the @Json name of this property, or this property's name if none is provided. */
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fun jsonName(): String {
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val fieldJsonName = element.jsonName
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val annotationHolderJsonName = annotationHolder.jsonName
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val parameterJsonName = parameter?.jsonName
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return when {
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fieldJsonName != null -> fieldJsonName
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annotationHolderJsonName != null -> annotationHolderJsonName
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parameterJsonName != null -> parameterJsonName
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else -> name
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}
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}
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// private val AnnotationMirror.simpleName: Name
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// get() = MoreTypes.asTypeElement(annotationType).simpleName!!
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override fun toString() = name
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}
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internal val Element?.jsonName: String?
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get() {
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if (this == null) return null
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return getAnnotation(Json::class.java)?.name
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}
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@ -18,7 +18,6 @@ package com.squareup.moshi.kotlin.codegen.api
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import com.squareup.kotlinpoet.BOOLEAN
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import com.squareup.kotlinpoet.NameAllocator
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import com.squareup.kotlinpoet.PropertySpec
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import com.squareup.moshi.kotlin.codegen.TargetProperty
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/** Generates functions to encode and decode a property as JSON. */
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internal class PropertyGenerator(
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@ -26,7 +25,7 @@ internal class PropertyGenerator(
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val delegateKey: DelegateKey
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) {
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val name = target.name
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val jsonName = target.jsonName()
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val jsonName = target.jsonName
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val hasDefault = target.hasDefault
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lateinit var localName: String
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@ -16,6 +16,7 @@
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package com.squareup.moshi.kotlin.codegen.api
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import com.squareup.kotlinpoet.AnnotationSpec
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import kotlin.reflect.KClass
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/** A parameter in user code that should be populated by generated code. */
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internal data class TargetParameter(
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@ -23,5 +24,15 @@ internal data class TargetParameter(
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val index: Int,
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val hasDefault: Boolean,
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val jsonName: String = name,
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val qualifiers: Set<AnnotationSpec>? = null
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)
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val qualifiers: Set<AnnotationSpec>? = null,
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private val tags: Map<KClass<*>, Any>
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) {
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/** Returns the tag attached with [type] as a key, or null if no tag is attached with that key. */
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fun <T : Any> tag(type: KClass<out T>): T? {
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@Suppress("UNCHECKED_CAST")
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return tags[type] as T?
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}
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/** Returns the tag attached with [T] as a key, or null if no tag is attached with that key. */
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inline fun <reified T : Any> tag(): T? = tag(T::class)
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}
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@ -0,0 +1,39 @@
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/*
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* Copyright (C) 2018 Square, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.squareup.moshi.kotlin.codegen.api
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import com.squareup.kotlinpoet.FunSpec
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import com.squareup.kotlinpoet.KModifier
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import com.squareup.kotlinpoet.PropertySpec
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import com.squareup.kotlinpoet.TypeName
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/** A property in user code that maps to JSON. */
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internal data class TargetProperty(
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val name: String,
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val type: TypeName,
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val parameter: TargetParameter?,
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val annotationHolder: FunSpec?,
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val field: PropertySpec?,
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val setter: FunSpec?,
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val getter: FunSpec?,
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val visibility: KModifier,
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val jsonName: String
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) {
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val parameterIndex get() = parameter?.index ?: -1
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val hasDefault get() = parameter?.hasDefault ?: true
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override fun toString() = name
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}
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@ -18,7 +18,6 @@ package com.squareup.moshi.kotlin.codegen.api
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import com.squareup.kotlinpoet.KModifier
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import com.squareup.kotlinpoet.TypeName
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import com.squareup.kotlinpoet.TypeVariableName
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import com.squareup.moshi.kotlin.codegen.TargetProperty
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/** A user type that should be decoded and encoded by generated code. */
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internal data class TargetType(
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@ -15,6 +15,8 @@
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*/
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package com.squareup.moshi.kotlin.codegen
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import com.google.auto.common.AnnotationMirrors
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import com.squareup.kotlinpoet.AnnotationSpec
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import com.squareup.kotlinpoet.ClassName
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import com.squareup.kotlinpoet.KModifier
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import com.squareup.kotlinpoet.KModifier.PUBLIC
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@ -25,10 +27,18 @@ import com.squareup.kotlinpoet.TypeVariableName
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import com.squareup.kotlinpoet.WildcardTypeName
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import com.squareup.kotlinpoet.asClassName
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import com.squareup.kotlinpoet.asTypeName
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import com.squareup.moshi.Json
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import com.squareup.moshi.JsonQualifier
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import com.squareup.moshi.kotlin.codegen.api.DelegateKey
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import com.squareup.moshi.kotlin.codegen.api.PropertyGenerator
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import com.squareup.moshi.kotlin.codegen.api.TargetConstructor
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import com.squareup.moshi.kotlin.codegen.api.TargetParameter
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import com.squareup.moshi.kotlin.codegen.api.TargetProperty
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import com.squareup.moshi.kotlin.codegen.api.TargetType
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import com.squareup.moshi.kotlin.codegen.api.TypeResolver
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import com.squareup.moshi.kotlin.codegen.api.asAnnotationSpec
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import com.squareup.moshi.kotlin.codegen.api.asFunSpec
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import com.squareup.moshi.kotlin.codegen.api.asPropertySpec
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import me.eugeniomarletti.kotlin.metadata.KotlinClassMetadata
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import me.eugeniomarletti.kotlin.metadata.KotlinMetadata
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import me.eugeniomarletti.kotlin.metadata.classKind
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@ -54,7 +64,12 @@ import me.eugeniomarletti.kotlin.metadata.shadow.metadata.ProtoBuf.Visibility.PR
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import me.eugeniomarletti.kotlin.metadata.shadow.metadata.deserialization.NameResolver
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import me.eugeniomarletti.kotlin.metadata.shadow.util.capitalizeDecapitalize.decapitalizeAsciiOnly
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import me.eugeniomarletti.kotlin.metadata.visibility
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import java.lang.annotation.ElementType
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import java.lang.annotation.Retention
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import java.lang.annotation.RetentionPolicy
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import java.lang.annotation.Target
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import javax.annotation.processing.Messager
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import javax.lang.model.element.AnnotationMirror
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import javax.lang.model.element.Element
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import javax.lang.model.element.ElementKind
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import javax.lang.model.element.ExecutableElement
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@ -62,9 +77,10 @@ import javax.lang.model.element.TypeElement
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import javax.lang.model.element.VariableElement
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import javax.lang.model.util.Elements
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import javax.lang.model.util.Types
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import javax.tools.Diagnostic
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import javax.tools.Diagnostic.Kind.ERROR
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internal fun TypeParameter.asTypeName(
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private fun TypeParameter.asTypeName(
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nameResolver: NameResolver,
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getTypeParameter: (index: Int) -> TypeParameter,
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resolveAliases: Boolean = false
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@ -84,7 +100,7 @@ internal fun TypeParameter.asTypeName(
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}
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}
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internal fun TypeParameter.Variance.asKModifier(): KModifier? {
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private fun TypeParameter.Variance.asKModifier(): KModifier? {
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return when (this) {
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Variance.IN -> KModifier.IN
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Variance.OUT -> KModifier.OUT
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@ -92,7 +108,7 @@ internal fun TypeParameter.Variance.asKModifier(): KModifier? {
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}
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}
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internal fun Visibility?.asKModifier(): KModifier {
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private fun Visibility?.asKModifier(): KModifier {
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return when (this) {
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INTERNAL -> KModifier.INTERNAL
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PRIVATE -> KModifier.PRIVATE
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@ -112,7 +128,7 @@ internal fun Visibility?.asKModifier(): KModifier {
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* @param [getTypeParameter] a function that returns the type parameter for the given index. **Only
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* called if [ProtoBuf.Type.hasTypeParameter] is true!**
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*/
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internal fun Type.asTypeName(
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private fun Type.asTypeName(
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nameResolver: NameResolver,
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getTypeParameter: (index: Int) -> TypeParameter,
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useAbbreviatedType: Boolean = true
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@ -173,7 +189,8 @@ internal fun Type.asTypeName(
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return typeName.copy(nullable = nullable)
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}
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internal fun primaryConstructor(metadata: KotlinClassMetadata, elements: Elements): TargetConstructor {
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internal fun primaryConstructor(metadata: KotlinClassMetadata,
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elements: Elements): TargetConstructor {
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val (nameResolver, classProto) = metadata.data
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// TODO allow custom constructor
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@ -202,8 +219,9 @@ internal fun primaryConstructor(metadata: KotlinClassMetadata, elements: Element
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name = name,
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index = index,
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hasDefault = parameter.declaresDefaultValue,
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jsonName = paramElement.jsonName ?: name
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qualifiers = paramElement.qualifiers.mapTo(mutableSetOf(), AnnotationMirror::asAnnotationSpec),
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jsonName = paramElement.jsonName ?: name,
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tags = mapOf(VariableElement::class to paramElement)
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)
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}
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@ -214,7 +232,10 @@ internal fun primaryConstructor(metadata: KotlinClassMetadata, elements: Element
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private val OBJECT_CLASS = ClassName("java.lang", "Object")
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/** Returns a target type for `element`, or null if it cannot be used with code gen. */
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internal fun targetType(messager: Messager, elements: Elements, types: Types, element: Element): TargetType? {
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internal fun targetType(messager: Messager,
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elements: Elements,
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types: Types,
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element: Element): TargetType? {
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val typeMetadata: KotlinMetadata? = element.kotlinMetadata
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if (element !is TypeElement || typeMetadata !is KotlinClassMetadata) {
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messager.printMessage(
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@ -226,7 +247,9 @@ internal fun targetType(messager: Messager, elements: Elements, types: Types, el
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when {
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proto.classKind == Class.Kind.ENUM_CLASS -> {
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messager.printMessage(
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ERROR, "@JsonClass with 'generateAdapter = \"true\"' can't be applied to $element: code gen for enums is not supported or necessary", element)
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ERROR,
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"@JsonClass with 'generateAdapter = \"true\"' can't be applied to $element: code gen for enums is not supported or necessary",
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element)
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return null
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}
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proto.classKind != Class.Kind.CLASS -> {
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@ -337,37 +360,66 @@ private fun declaredProperties(
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val type = typeResolver.resolve(property.returnType.asTypeName(
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nameResolver, classProto::getTypeParameter, false))
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val parameter = constructor.parameters[name]
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val fieldElement = fields[name]
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val annotationHolder = annotationHolders[name]
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// Used for setter/getter/is lookups. Guaranteed to be safe because kotlin doesn't allow you to
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// have both "AAA" and "aAA".
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val decapitalizedName = name.decapitalizeAsciiOnly()
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result[name] = TargetProperty(name = name,
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type = type,
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parameter = parameter,
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annotationHolder = annotationHolders[name],
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field = fields[name],
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setter = setters[name],
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getter = getters[name],
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visibility = property.visibility.asKModifier()
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annotationHolder = annotationHolder?.asFunSpec(),
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field = fieldElement?.asPropertySpec(),
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setter = setters[decapitalizedName]?.asFunSpec(),
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getter = getters[decapitalizedName]?.asFunSpec(),
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visibility = property.visibility.asKModifier(),
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jsonName = jsonName(
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fieldElement = fieldElement,
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parameter = parameter,
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annotationHolder = annotationHolder,
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name = name
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)
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)
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}
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return result
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}
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||||
/** Returns the @Json name of this property, or this property's name if none is provided. */
|
||||
private fun jsonName(
|
||||
fieldElement: Element?,
|
||||
parameter: TargetParameter?,
|
||||
annotationHolder: ExecutableElement?,
|
||||
name: String): String {
|
||||
val fieldJsonName = fieldElement.jsonName
|
||||
val annotationHolderJsonName = annotationHolder.jsonName
|
||||
val parameterJsonName = parameter?.jsonName
|
||||
|
||||
return when {
|
||||
fieldJsonName != null -> fieldJsonName
|
||||
annotationHolderJsonName != null -> annotationHolderJsonName
|
||||
parameterJsonName != null -> parameterJsonName
|
||||
else -> name
|
||||
}
|
||||
}
|
||||
|
||||
private val Element.name get() = simpleName.toString()
|
||||
|
||||
private fun genericTypeNames(proto: Class, nameResolver: NameResolver): List<TypeVariableName> {
|
||||
return proto.typeParameterList.map {
|
||||
val possibleBounds = it.upperBoundList
|
||||
return proto.typeParameterList.map { typeParameter ->
|
||||
val possibleBounds = typeParameter.upperBoundList
|
||||
.map { it.asTypeName(nameResolver, proto::getTypeParameter, false) }
|
||||
val typeVar = if (possibleBounds.isEmpty()) {
|
||||
TypeVariableName(
|
||||
name = nameResolver.getString(it.name),
|
||||
variance = it.varianceModifier)
|
||||
name = nameResolver.getString(typeParameter.name),
|
||||
variance = typeParameter.varianceModifier)
|
||||
} else {
|
||||
TypeVariableName(
|
||||
name = nameResolver.getString(it.name),
|
||||
name = nameResolver.getString(typeParameter.name),
|
||||
bounds = *possibleBounds.toTypedArray(),
|
||||
variance = it.varianceModifier)
|
||||
variance = typeParameter.varianceModifier)
|
||||
}
|
||||
return@map typeVar.copy(reified = it.reified)
|
||||
return@map typeVar.copy(reified = typeParameter.reified)
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -382,3 +434,99 @@ private val TypeParameter.varianceModifier: KModifier?
|
|||
}
|
||||
}
|
||||
}
|
||||
|
||||
private val TargetProperty.isTransient get() = field != null && field.annotations.any { it.className == Transient::class.asClassName() }
|
||||
private val TargetProperty.isSettable get() = setter != null || parameter != null
|
||||
private val TargetProperty.isVisible: Boolean
|
||||
get() {
|
||||
return visibility == KModifier.INTERNAL
|
||||
|| visibility == KModifier.PROTECTED
|
||||
|| visibility == KModifier.PUBLIC
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns a generator for this property, or null if either there is an error and this property
|
||||
* cannot be used with code gen, or if no codegen is necessary for this property.
|
||||
*/
|
||||
internal fun TargetProperty.generator(messager: Messager): PropertyGenerator? {
|
||||
val element = field?.tag<VariableElement>() ?: setter?.tag<ExecutableElement>()
|
||||
?: getter!!.tag<ExecutableElement>()
|
||||
if (isTransient) {
|
||||
if (!hasDefault) {
|
||||
element?.let {
|
||||
messager.printMessage(
|
||||
Diagnostic.Kind.ERROR, "No default value for transient property ${this}",
|
||||
it)
|
||||
}
|
||||
return null
|
||||
}
|
||||
return null // This property is transient and has a default value. Ignore it.
|
||||
}
|
||||
|
||||
if (!isVisible) {
|
||||
element?.let {
|
||||
messager.printMessage(Diagnostic.Kind.ERROR, "property ${this} is not visible",
|
||||
it)
|
||||
}
|
||||
return null
|
||||
}
|
||||
|
||||
if (!isSettable) {
|
||||
return null // This property is not settable. Ignore it.
|
||||
}
|
||||
|
||||
val jsonQualifierMirrors = jsonQualifiers(element)
|
||||
for (jsonQualifier in jsonQualifierMirrors) {
|
||||
// Check Java types since that covers both Java and Kotlin annotations.
|
||||
val annotationElement = jsonQualifier.tag<TypeElement>() ?: continue
|
||||
annotationElement.getAnnotation(Retention::class.java)?.let {
|
||||
if (it.value != RetentionPolicy.RUNTIME) {
|
||||
messager.printMessage(Diagnostic.Kind.ERROR,
|
||||
"JsonQualifier @${jsonQualifier.className.simpleName} must have RUNTIME retention")
|
||||
}
|
||||
}
|
||||
annotationElement.getAnnotation(Target::class.java)?.let {
|
||||
if (ElementType.FIELD !in it.value) {
|
||||
messager.printMessage(Diagnostic.Kind.ERROR,
|
||||
"JsonQualifier @${jsonQualifier.className.simpleName} must support FIELD target")
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
val jsonQualifierSpecs = jsonQualifierMirrors.map {
|
||||
it.toBuilder()
|
||||
.useSiteTarget(AnnotationSpec.UseSiteTarget.FIELD)
|
||||
.build()
|
||||
}
|
||||
|
||||
return PropertyGenerator(this,
|
||||
DelegateKey(type, jsonQualifierSpecs))
|
||||
}
|
||||
|
||||
/** Returns the JsonQualifiers on the field and parameter of this property. */
|
||||
private fun TargetProperty.jsonQualifiers(element: Element?): Set<AnnotationSpec> {
|
||||
val elementQualifiers = element.qualifiers
|
||||
val annotationHolderQualifiers = annotationHolder?.tag<ExecutableElement>().qualifiers
|
||||
val parameterQualifiers = parameter?.qualifiers.orEmpty()
|
||||
|
||||
// TODO(jwilson): union the qualifiers somehow?
|
||||
return when {
|
||||
elementQualifiers.isNotEmpty() -> elementQualifiers.mapTo(mutableSetOf(), AnnotationMirror::asAnnotationSpec)
|
||||
annotationHolderQualifiers.isNotEmpty() -> annotationHolderQualifiers.mapTo(
|
||||
mutableSetOf(), AnnotationMirror::asAnnotationSpec)
|
||||
parameterQualifiers.isNotEmpty() -> parameterQualifiers
|
||||
else -> setOf()
|
||||
}
|
||||
}
|
||||
|
||||
private val Element?.qualifiers: Set<AnnotationMirror>
|
||||
get() {
|
||||
if (this == null) return setOf()
|
||||
return AnnotationMirrors.getAnnotatedAnnotations(this, JsonQualifier::class.java)
|
||||
}
|
||||
|
||||
private val Element?.jsonName: String?
|
||||
get() {
|
||||
if (this == null) return null
|
||||
return getAnnotation(Json::class.java)?.name
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue