com.google.auto.value.processor.SimpleMethod Maven / Gradle / Ivy
/*
* Copyright 2018 Google LLC
*
* 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.google.auto.value.processor;
import static java.util.stream.Collectors.joining;
import java.util.Set;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.Modifier;
/**
* A method on an {@code @AutoValue} or {@code AutoOneOf} class that has no specific attached
* information, such as a {@code toBuilder()} method, or a {@code build()} method, where only the
* name and access type is needed in context.
*
* It implements JavaBean-style getters which means it can be referenced from templates, for
* example {@code $method.access}. This template access means that the class and its getters must be
* public.
*/
public final class SimpleMethod {
private final String access;
private final String name;
private final String throwsString;
SimpleMethod(ExecutableElement method) {
this.access = access(method);
this.name = method.getSimpleName().toString();
this.throwsString = throwsString(method);
}
public String getAccess() {
return access;
}
public String getName() {
return name;
}
public String getThrows() {
return throwsString;
}
/**
* Returns an appropriate string to be used in code for the access specification of the given
* method. This will be {@code public} or {@code protected} followed by a space, or the empty
* string for default access.
*/
static String access(ExecutableElement method) {
Set mods = method.getModifiers();
if (mods.contains(Modifier.PUBLIC)) {
return "public ";
} else if (mods.contains(Modifier.PROTECTED)) {
return "protected ";
} else {
return "";
}
}
private static String throwsString(ExecutableElement method) {
if (method.getThrownTypes().isEmpty()) {
return "";
}
return "throws "
+ method.getThrownTypes().stream().map(TypeEncoder::encode).collect(joining(", "));
}
}