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/*******************************************************************************
* Copyright (c) 2018 protos software gmbh (http://www.protos.de).
* All rights reserved.
*
* This program and the accompanying materials are made
* available under the terms of the Eclipse Public License 2.0
* which is available at https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* CONTRIBUTORS:
* Jan Belle (initial contribution)
*
*******************************************************************************/
package org.eclipse.etrice.generator.base;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.List;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.etrice.generator.base.args.Arguments;
import org.eclipse.etrice.generator.base.args.Options;
import org.eclipse.etrice.generator.base.cli.CommandLineParseException;
import org.eclipse.etrice.generator.base.cli.ICommandLineParser;
import org.eclipse.etrice.generator.base.cli.IHelpFormatter;
import org.eclipse.etrice.generator.base.io.GeneratorFileIO;
import org.eclipse.etrice.generator.base.io.ILineOutput;
import org.eclipse.etrice.generator.base.io.IGeneratorResourceLoader;
import org.eclipse.etrice.generator.base.io.LineOutput;
import org.eclipse.etrice.generator.base.logging.Logger;
import org.eclipse.etrice.generator.base.logging.Loglevel;
import org.eclipse.etrice.generator.base.setup.GeneratorApplicationOptions;
import org.eclipse.etrice.generator.base.setup.IGeneratorOptions;
import org.eclipse.etrice.generator.base.validation.IGeneratorResourceValidator;
import com.google.inject.Guice;
import com.google.inject.Inject;
import com.google.inject.Injector;
import com.google.inject.Module;
import com.google.inject.Provider;
/**
* Executes a generator.
*/
public class GeneratorApplication {
/**
* Creates a new generator instance using the specified generator module.
*
* @param module the generator module
* @return the new generator application
*/
public static GeneratorApplication create(Module module) {
Injector injector = Guice.createInjector(module);
GeneratorApplication genAppl = injector.getInstance(GeneratorApplication.class);
return genAppl;
}
/**
* Creates a new generator instance using the specified generator module.
*
* @param moduleName the name of the class of the generator module
* @return the new generator application
*/
public static GeneratorApplication create(String moduleName) throws InstantiationException, IllegalAccessException, ClassNotFoundException {
Module module = (Module) Class.forName(moduleName).newInstance();
return create(module);
}
private final Options options;
private ICommandLineParser commandLineParser;
private IHelpFormatter helpFormatter;
private Provider<Logger> loggerProvider;
private Provider<GeneratorFileIO> fileIOProvider;
private Provider<IGenerator> generatorProvider;
private IGeneratorResourceLoader resourceLoader;
private IGeneratorResourceValidator resourceValidator;
@Inject
public GeneratorApplication(IGeneratorOptions optionsModule, ICommandLineParser commandLineParser,
IHelpFormatter helpFormatter, Provider<Logger> loggerProvider,
Provider<GeneratorFileIO> fileIOProvider, Provider<IGenerator> generatorProvider,
IGeneratorResourceLoader resourceLoader, IGeneratorResourceValidator resourceValidator) {
this.options = new Options(new GeneratorApplicationOptions(), optionsModule);
this.commandLineParser = commandLineParser;
this.helpFormatter = helpFormatter;
this.loggerProvider = loggerProvider;
this.fileIOProvider = fileIOProvider;
this.generatorProvider = generatorProvider;
this.resourceLoader = resourceLoader;
this.resourceValidator = resourceValidator;
}
/**
* Runs the generator with the specified command line arguments.
*
* @param args the command line arguments
*/
public void run(String[] args) throws GeneratorException {
run(args, new LineOutput());
}
/**
* Runs the generator with the specified command line arguments and output.
*
* @param args the command line arguments
* @param out the output
*/
public void run(String[] args, ILineOutput out) throws GeneratorException {
try {
Arguments arguments = commandLineParser.parseArgs(options, GeneratorApplicationOptions.FILES, args);
if(arguments.get(GeneratorApplicationOptions.HELP)) {
printHelp(out);
}
else {
run(arguments, out);
}
}
catch (CommandLineParseException e) {
out.println("Error: " + e.getMessage());
printHelp(out);
throw new GeneratorException(e);
}
}
/**
* Runs the generator using the specified arguments and output.
*
* @param arguments the generator arguments
* @param out the output
*/
public void run(Arguments arguments, ILineOutput out) throws GeneratorException {
Logger logger = createLogger(arguments, out);
try {
GeneratorFileIO fileIO = createGeneratorFileIO(arguments, logger);
logArguments(arguments, fileIO, logger);
List<Resource> resources = load(arguments, logger);
validate(resources, arguments, logger);
generate(resources, arguments, fileIO, logger);
cleanOutputDirectory(arguments, fileIO, logger);
}
catch (Exception e) {
logException(e, logger);
throw e;
}
}
/**
* Returns the options of this generator.
*
* @return the options
*/
public final Options getOptions() {
return options;
}
/**
* Creates a new set of arguments for this generator.
*
* @return the default arguments
*/
public Arguments createArguments() {
return new Arguments(getOptions());
}
private void printHelp(ILineOutput out) {
String help = helpFormatter.getHelp(options, GeneratorApplicationOptions.FILES);
out.println(help);
}
private Logger createLogger(Arguments arguments, ILineOutput out) {
Logger logger = loggerProvider.get();
logger.setLoglevel(arguments.get(GeneratorApplicationOptions.LOGLEVEL));
logger.setOutput(out);
return logger;
}
private GeneratorFileIO createGeneratorFileIO(Arguments arguments, Logger logger) {
GeneratorFileIO fileIO = fileIOProvider.get();
fileIO.setOutputDirectory(arguments.get(GeneratorApplicationOptions.GEN_DIR));
fileIO.setLogger(logger);
return fileIO;
}
private List<Resource> load(Arguments arguments, Logger logger) {
List<String> files = arguments.get(GeneratorApplicationOptions.FILES);
return resourceLoader.load(files, arguments, logger);
}
private void validate(List<Resource> models, Arguments arguments, Logger logger) {
resourceValidator.validate(models, arguments, logger);
}
private void generate(List<Resource> resources, Arguments arguments, GeneratorFileIO fileIO, Logger logger) {
// Create new generator to avoid problems with static states in eTrice AbstractGenerator
IGenerator generator = generatorProvider.get();
generator.generate(resources, arguments, fileIO, logger);
}
private void cleanOutputDirectory(Arguments arguments, GeneratorFileIO fileIO, Logger logger) {
if(arguments.get(GeneratorApplicationOptions.CLEAN)) {
fileIO.cleanOutputDirectory();
}
}
private void logArguments(Arguments arguments, GeneratorFileIO fileIO, Logger logger) {
logger.logDebug("Arguments: " + arguments);
logger.logDebug("Output directory: " + fileIO.getOutputDirectory().toAbsolutePath());
}
private void logException(Exception e, Logger logger) {
if(Loglevel.DEBUG.compareTo(logger.getLoglevel()) >= 0) {
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
e.printStackTrace(pw);
logger.logDebug(sw.toString());
}
}
}
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