JavaFunSpec.kt
/*
* Copyright 2022 The Android Open Source Project
*
* 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 androidx.room.compiler.codegen.java
import androidx.room.compiler.codegen.L
import androidx.room.compiler.codegen.VisibilityModifier
import androidx.room.compiler.codegen.XAnnotationSpec
import androidx.room.compiler.codegen.XCodeBlock
import androidx.room.compiler.codegen.XFunSpec
import androidx.room.compiler.codegen.XTypeName
import androidx.room.compiler.processing.KnownTypeNames.KOTLIN_UNIT
import androidx.room.compiler.processing.XNullability
import com.squareup.javapoet.CodeBlock
import com.squareup.javapoet.MethodSpec
import com.squareup.javapoet.ParameterSpec
import com.squareup.kotlinpoet.javapoet.JTypeName
import javax.lang.model.element.Modifier
internal class JavaFunSpec(
internal val actual: MethodSpec
) : JavaLang(), XFunSpec {
internal class Builder(
internal val actual: MethodSpec.Builder
) : JavaLang(), XFunSpec.Builder {
override fun addCode(code: XCodeBlock) = apply {
require(code is JavaCodeBlock)
actual.addCode(code.actual)
}
override fun addParameter(
typeName: XTypeName,
name: String,
annotations: List<XAnnotationSpec>
) = apply {
actual.addParameter(
ParameterSpec.builder(typeName.java, name, Modifier.FINAL)
.apply {
if (typeName.nullability == XNullability.NULLABLE) {
addAnnotation(NULLABLE_ANNOTATION)
} else if (typeName.nullability == XNullability.NONNULL) {
addAnnotation(NONNULL_ANNOTATION)
}
}.build()
)
// TODO(b/247247439): Add other annotations
}
override fun callSuperConstructor(vararg args: XCodeBlock) = apply {
actual.addStatement(
"super($L)",
CodeBlock.join(
args.map {
check(it is JavaCodeBlock)
it.actual
},
", "
)
)
}
override fun returns(typeName: XTypeName) = apply {
if (typeName.java == JTypeName.VOID || typeName.java == KOTLIN_UNIT) {
return@apply
}
// TODO(b/247242374) Add nullability annotations for non-private methods
if (!actual.modifiers.contains(Modifier.PRIVATE)) {
if (typeName.nullability == XNullability.NULLABLE) {
actual.addAnnotation(NULLABLE_ANNOTATION)
} else if (typeName.nullability == XNullability.NONNULL) {
actual.addAnnotation(NONNULL_ANNOTATION)
}
}
actual.returns(typeName.java)
}
override fun build() = JavaFunSpec(actual.build())
}
}
internal fun VisibilityModifier.toJavaVisibilityModifier() = when (this) {
VisibilityModifier.PUBLIC -> Modifier.PUBLIC
VisibilityModifier.PROTECTED -> Modifier.PROTECTED
VisibilityModifier.PRIVATE -> Modifier.PRIVATE
}