feat: compile entire directory in-place

Author: tpluscode

.gitignore

@@ -5,3 +5,4 @@ model/
 xtend-gen/
 target/
 xtext-gen/
+*.api.json

com.zazuko.apitesting.dsl/pom.xml

@@ -239,5 +239,10 @@
 			<artifactId>xtext-antlr-generator</artifactId>
 			<optional>true</optional>
 		</dependency>
+		<dependency>
+			<groupId>commons-io</groupId>
+			<artifactId>commons-io</artifactId>
+			<version>2.5</version>
+		</dependency>
 	</dependencies>
 </project>

com.zazuko.apitesting.dsl/src/main/java/GeneratorMain.java

@@ -1,17 +1,23 @@
+import java.io.File;
+import java.util.Collection;
 import java.util.List;
-import java.util.Map.Entry;
+
+import org.apache.commons.io.FileUtils;
+import org.apache.commons.io.filefilter.WildcardFileFilter;
 
 import org.eclipse.emf.common.util.URI;
 import org.eclipse.emf.ecore.resource.Resource;
+import org.eclipse.emf.ecore.resource.ResourceSet;
+import org.eclipse.xtext.generator.GeneratorContext;
 import org.eclipse.xtext.generator.GeneratorDelegate;
-import org.eclipse.xtext.generator.InMemoryFileSystemAccess;
-import org.eclipse.xtext.resource.XtextResourceSet;
-import org.eclipse.xtext.resource.XtextResource;
+import org.eclipse.xtext.generator.JavaIoFileSystemAccess;
 import org.eclipse.xtext.util.CancelIndicator;
 import org.eclipse.xtext.validation.CheckMode;
 import org.eclipse.xtext.validation.IResourceValidator;
 import org.eclipse.xtext.validation.Issue;
 
+import com.google.inject.Inject;
+import com.google.inject.Provider;
 import com.google.inject.Injector;
 
 import com.zazuko.apitesting.dsl.CoreStandaloneSetup;
@@ -20,24 +26,41 @@ public class GeneratorMain {
 
 	private static Injector injector = new CoreStandaloneSetup().createInjectorAndDoEMFRegistration();
 
+	@Inject Provider<ResourceSet> resourceSetProvider;
+
+	@Inject IResourceValidator validator;
+
+	@Inject GeneratorDelegate generator;
+
+	@Inject JavaIoFileSystemAccess fileAccess;
+	
 	public static void main(String[] args) {
-		final String input = args[0];
-		
-		XtextResourceSet resourceSet = injector.getInstance(XtextResourceSet.class);
-		Resource resource = resourceSet.getResource(URI.createFileURI(input), true);
+		GeneratorMain main = injector.getInstance(GeneratorMain.class);
+		main.generateDirectory(args[0]);
+	}
+	
+	protected void generateDirectory(String directoryName) {
+		File dir = new File(directoryName);
+		Collection<File> files = FileUtils.listFiles(dir, new WildcardFileFilter("*.api"), null);
 
-		IResourceValidator validator = ((XtextResource)resource).getResourceServiceProvider().getResourceValidator();
-		List<Issue> issues = validator.validate(resource, CheckMode.ALL, CancelIndicator.NullImpl);
-		for (Issue issue : issues) {
-		  // System.out.println(issue.getMessage());
+		for (File file : files) {
+			this.generateOne(file);
 		}
+	}
+		
+	protected void generateOne(File input) {
+		System.out.printf("Compiling %s %n", input.getPath());
+	
+		ResourceSet resourceSet = resourceSetProvider.get();
+		Resource resource = resourceSet.getResource(URI.createFileURI(input.getPath()), true);
 
-		// Code Generator
-		GeneratorDelegate generator = injector.getInstance(GeneratorDelegate.class);
-		InMemoryFileSystemAccess fsa = new InMemoryFileSystemAccess();
-		generator.doGenerate(resource, fsa);
-		for (Entry<String, CharSequence> file : fsa.getTextFiles().entrySet()) {
-		  System.out.println(file.getValue());
+		List<Issue> issues = validator.validate(resource, CheckMode.ALL, CancelIndicator.NullImpl);
+		if (!issues.isEmpty()) {
+			issues.forEach(issue -> System.out.println(issue.getMessage()));
+			return;
 		}
+
+		fileAccess.setOutputPath(input.getParentFile().getPath());
+		generator.generate(resource, fileAccess, new GeneratorContext());	
 	}
 }

com.zazuko.apitesting.dsl/src/main/java/com/zazuko/apitesting/dsl/generator/CoreGenerator.xtend

@@ -24,9 +24,8 @@ class CoreGenerator extends AbstractGenerator {
 
 		if ( ! blocks.empty) {
 			val String dslFileName = resource.getURI().lastSegment.toString();
-			val String outFileBase = dslFileName.substring(0, dslFileName.lastIndexOf("."));
 
-			fsa.generateFile(outFileBase + '.json', generateSteps(blocks));
+			fsa.generateFile(dslFileName + '.json', generateSteps(blocks));
 		}		
 	}