io.spring.initializr.generator.language.Language Maven / Gradle / Ivy
/*
* Copyright 2012-2019 the original author or authors.
*
* 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 io.spring.initializr.generator.language;
import java.util.Objects;
import org.springframework.core.io.support.SpringFactoriesLoader;
/**
* A language in which a generated project can be written.
*
* @author Andy Wilkinson
*/
public interface Language {
/**
* The default JVM version to use if none is specified.
*/
String DEFAULT_JVM_VERSION = "1.8";
/**
* Return the language identifier.
* @return the language id
*/
String id();
/**
* Return the JVM version level to use.
* @return the JVM version or {@value DEFAULT_JVM_VERSION} if not set
*/
String jvmVersion();
/**
* Return the file extension to use for source file of this language.
* @return the source file extension
*/
String sourceFileExtension();
static Language forId(String id, String jvmVersion) {
return SpringFactoriesLoader.loadFactories(LanguageFactory.class, LanguageFactory.class.getClassLoader())
.stream().map((factory) -> factory.createLanguage(id, jvmVersion)).filter(Objects::nonNull).findFirst()
.orElseThrow(() -> new IllegalStateException("Unrecognized language id '" + id + "'"));
}
}