forked from square/kotlinpoet
/
LambdaTypeName.kt
126 lines (112 loc) · 4.27 KB
/
LambdaTypeName.kt
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/*
* Copyright (C) 2021 Square, Inc.
*
* 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
*
* https://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.squareup.kotlinpoet
import kotlin.reflect.KClass
@OptIn(ExperimentalKotlinPoetApi::class)
public class LambdaTypeName private constructor(
public val receiver: TypeName? = null,
@property:ExperimentalKotlinPoetApi
public val contextReceivers: List<TypeName> = emptyList(),
parameters: List<ParameterSpec> = emptyList(),
public val returnType: TypeName = UNIT,
nullable: Boolean = false,
public val isSuspending: Boolean = false,
annotations: List<AnnotationSpec> = emptyList(),
tags: Map<KClass<*>, Any> = emptyMap()
) : TypeName(nullable, annotations, TagMap(tags)) {
public val parameters: List<ParameterSpec> = parameters.toImmutableList()
init {
for (param in parameters) {
require(param.annotations.isEmpty()) { "Parameters with annotations are not allowed" }
require(param.modifiers.isEmpty()) { "Parameters with modifiers are not allowed" }
require(param.defaultValue == null) { "Parameters with default values are not allowed" }
}
}
override fun copy(
nullable: Boolean,
annotations: List<AnnotationSpec>,
tags: Map<KClass<*>, Any>
): LambdaTypeName {
return copy(nullable, annotations, this.isSuspending, tags)
}
public fun copy(
nullable: Boolean = this.isNullable,
annotations: List<AnnotationSpec> = this.annotations.toList(),
suspending: Boolean = this.isSuspending,
tags: Map<KClass<*>, Any> = this.tags.toMap()
): LambdaTypeName {
return LambdaTypeName(receiver, contextReceivers, parameters, returnType, nullable, suspending, annotations, tags)
}
override fun emit(out: CodeWriter): CodeWriter {
if (contextReceivers.isNotEmpty()) {
val receivers = contextReceivers.joinToString(", ") { "%T" }
out.emitCode("context($receivers)·", *contextReceivers.toTypedArray())
}
if (isNullable) {
out.emit("(")
}
if (isSuspending) {
out.emit("suspend·")
}
receiver?.let {
if (it.isAnnotated) {
out.emitCode("(%T).", it)
} else {
out.emitCode("%T.", it)
}
}
parameters.emit(out)
out.emitCode(if (returnType is LambdaTypeName) "·->·(%T)" else "·->·%T", returnType)
if (isNullable) {
out.emit(")")
}
return out
}
public companion object {
/** Returns a lambda type with `returnType` and parameters listed in `parameters`. */
@ExperimentalKotlinPoetApi @JvmStatic public fun get(
receiver: TypeName? = null,
parameters: List<ParameterSpec> = emptyList(),
returnType: TypeName,
contextReceivers: List<TypeName> = emptyList()
): LambdaTypeName = LambdaTypeName(receiver, contextReceivers, parameters, returnType)
/** Returns a lambda type with `returnType` and parameters listed in `parameters`. */
@JvmStatic public fun get(
receiver: TypeName? = null,
parameters: List<ParameterSpec> = emptyList(),
returnType: TypeName
): LambdaTypeName = LambdaTypeName(receiver, emptyList(), parameters, returnType)
/** Returns a lambda type with `returnType` and parameters listed in `parameters`. */
@JvmStatic public fun get(
receiver: TypeName? = null,
vararg parameters: TypeName = emptyArray(),
returnType: TypeName
): LambdaTypeName {
return LambdaTypeName(
receiver,
emptyList(),
parameters.toList().map { ParameterSpec.unnamed(it) },
returnType
)
}
/** Returns a lambda type with `returnType` and parameters listed in `parameters`. */
@JvmStatic public fun get(
receiver: TypeName? = null,
vararg parameters: ParameterSpec = emptyArray(),
returnType: TypeName
): LambdaTypeName = LambdaTypeName(receiver, emptyList(), parameters.toList(), returnType)
}
}