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EclipseWtpFormatterStep.java
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EclipseWtpFormatterStep.java
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/*
* Copyright 2016-2021 DiffPlug
*
* 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.diffplug.spotless.extra.wtp;
import java.io.File;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Properties;
import com.diffplug.spotless.FormatterFunc;
import com.diffplug.spotless.Jvm;
import com.diffplug.spotless.Provisioner;
import com.diffplug.spotless.ThrowingEx;
import com.diffplug.spotless.extra.EclipseBasedStepBuilder;
/** Formatter step which calls out to the Groovy-Eclipse formatter. */
public enum EclipseWtpFormatterStep {
// @formatter:off
CSS ("EclipseCssFormatterStepImpl", EclipseWtpFormatterStep::applyWithoutFile),
HTML("EclipseHtmlFormatterStepImpl", EclipseWtpFormatterStep::applyWithoutFile),
JS ("EclipseJsFormatterStepImpl", EclipseWtpFormatterStep::applyWithoutFile),
JSON("EclipseJsonFormatterStepImpl", EclipseWtpFormatterStep::applyWithoutFile),
XML ("EclipseXmlFormatterStepImpl", EclipseWtpFormatterStep::applyWithFile);
// @formatter:on
private static final String NAME = "eclipse wtp formatter";
private static final String FORMATTER_PACKAGE = "com.diffplug.spotless.extra.eclipse.wtp.";
private static final Jvm.Support<String> JVM_SUPPORT = Jvm.<String> support(NAME).add(8, "4.18.0").add(11, "4.21.0");
private static final String FORMATTER_METHOD = "format";
private final String implementationClassName;
private final ThrowingEx.BiFunction<String, EclipseBasedStepBuilder.State, FormatterFunc> formatterCall;
EclipseWtpFormatterStep(String implementationClassName, ThrowingEx.BiFunction<String, EclipseBasedStepBuilder.State, FormatterFunc> formatterCall) {
this.implementationClassName = implementationClassName;
this.formatterCall = formatterCall;
}
public EclipseBasedStepBuilder createBuilder(Provisioner provisioner) {
return new EclipseBasedStepBuilder(NAME, " - " + toString(), provisioner, state -> formatterCall.apply(implementationClassName, state));
}
public static String defaultVersion() {
return JVM_SUPPORT.getRecommendedFormatterVersion();
}
private static FormatterFunc applyWithoutFile(String className, EclipseBasedStepBuilder.State state) throws Exception {
JVM_SUPPORT.assertFormatterSupported(state.getSemanticVersion());
Class<?> formatterClazz = state.loadClass(FORMATTER_PACKAGE + className);
Object formatter = formatterClazz.getConstructor(Properties.class).newInstance(state.getPreferences());
Method method = formatterClazz.getMethod(FORMATTER_METHOD, String.class);
return input -> {
try {
return (String) method.invoke(formatter, input);
} catch (InvocationTargetException exceptionWrapper) {
Throwable throwable = exceptionWrapper.getTargetException();
Exception exception = (throwable instanceof Exception) ? (Exception) throwable : null;
throw (null == exception) ? exceptionWrapper : exception;
}
};
}
private static FormatterFunc applyWithFile(String className, EclipseBasedStepBuilder.State state) throws Exception {
JVM_SUPPORT.assertFormatterSupported(state.getSemanticVersion());
Class<?> formatterClazz = state.loadClass(FORMATTER_PACKAGE + className);
Object formatter = formatterClazz.getConstructor(Properties.class).newInstance(state.getPreferences());
Method method = formatterClazz.getMethod(FORMATTER_METHOD, String.class, String.class);
return JVM_SUPPORT.suggestLaterVersionOnError(state.getSemanticVersion(), new FormatterFunc.NeedsFile() {
@Override
public String applyWithFile(String unix, File file) throws Exception {
try {
return (String) method.invoke(formatter, unix, file.getAbsolutePath());
} catch (InvocationTargetException exceptionWrapper) {
Throwable throwable = exceptionWrapper.getTargetException();
Exception exception = (throwable instanceof Exception) ? (Exception) throwable : null;
throw (null == exception) ? exceptionWrapper : exception;
}
}
});
}
}