Examples with JavaCompiler javax.tools.JavaCompiler used on opensource projects

Example 16 with JavaCompiler

use of javax.tools.JavaCompiler in project auto by google.

the class AutoAnnotationCompilationTest method doTestMissingClass.

private void doTestMissingClass(File tempDir) {
    // Test that referring to an undefined annotation does not trigger @AutoAnnotation processing.
    // The class Erroneous references an undefined annotation @NotAutoAnnotation. If we didn't have
    // any special treatment of undefined types then we could run into a compiler bug where
    // AutoAnnotationProcessor would think that a method annotated with @NotAutoAnnotation was in
    // fact annotated with @AutoAnnotation. As it is, we do get an error about @NotAutoAnnotation
    // being undefined, and we do not get an error complaining that this supposed @AutoAnnotation
    // method is not static. We do need to have @AutoAnnotation appear somewhere so that the
    // processor will run.
    JavaFileObject erroneousJavaFileObject = JavaFileObjects.forSourceLines("com.example.annotations.Erroneous", "package com.example.annotations;", "", "import com.google.auto.value.AutoAnnotation;", "", "public class Erroneous {", "  @interface Empty {}", "  @AutoAnnotation static Empty newEmpty() {}", "  @NotAutoAnnotation Empty notNewEmpty() {}", "}");
    JavaCompiler javaCompiler = ToolProvider.getSystemJavaCompiler();
    DiagnosticCollector<JavaFileObject> diagnosticCollector = new DiagnosticCollector<JavaFileObject>();
    JavaCompiler.CompilationTask compilationTask = javaCompiler.getTask((Writer) null, (JavaFileManager) null, diagnosticCollector, ImmutableList.of("-d", tempDir.toString()), (Iterable<String>) null, ImmutableList.of(erroneousJavaFileObject));
    compilationTask.setProcessors(ImmutableList.of(new AutoAnnotationProcessor()));
    boolean result = compilationTask.call();
    assertThat(result).isFalse();
    List<Diagnostic<? extends JavaFileObject>> diagnostics = diagnosticCollector.getDiagnostics();
    assertThat(diagnostics).isNotEmpty();
    assertThat(diagnostics.get(0).getMessage(null)).contains("NotAutoAnnotation");
    assertThat(diagnostics.get(0).getMessage(null)).doesNotContain("static");
}

Example 17 with JavaCompiler

use of javax.tools.JavaCompiler in project error-prone by google.

the class CodeTransformerTestHelper method transform.

public JavaFileObject transform(JavaFileObject original) {
    JavaCompiler compiler = JavacTool.create();
    DiagnosticCollector<JavaFileObject> diagnosticsCollector = new DiagnosticCollector<JavaFileObject>();
    StandardJavaFileManager fileManager = compiler.getStandardFileManager(diagnosticsCollector, Locale.ENGLISH, UTF_8);
    JavacTaskImpl task = (JavacTaskImpl) compiler.getTask(CharStreams.nullWriter(), fileManager, diagnosticsCollector, ImmutableList.<String>of(), null, ImmutableList.of(original));
    try {
        SourceFile sourceFile = SourceFile.create(original);
        Iterable<? extends CompilationUnitTree> trees = task.parse();
        task.analyze();
        JCCompilationUnit tree = Iterables.getOnlyElement(Iterables.filter(trees, JCCompilationUnit.class));
        DescriptionBasedDiff diff = DescriptionBasedDiff.create(tree);
        transformer().apply(new TreePath(tree), task.getContext(), diff);
        diff.applyDifferences(sourceFile);
        return JavaFileObjects.forSourceString(Iterables.getOnlyElement(Iterables.filter(tree.getTypeDecls(), JCClassDecl.class)).sym.getQualifiedName().toString(), sourceFile.getSourceText());
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}

Example 18 with JavaCompiler

use of javax.tools.JavaCompiler in project error-prone by google.

the class GuardedByBinderTest method bind.

private String bind(String className, String exprString, JavaFileObject fileObject) {
    JavaCompiler javaCompiler = JavacTool.create();
    JavacTaskImpl task = (JavacTaskImpl) javaCompiler.getTask(new PrintWriter(System.err, true), fileManager, null, Collections.<String>emptyList(), null, Arrays.asList(fileObject));
    Iterable<? extends CompilationUnitTree> compilationUnits = task.parse();
    task.analyze();
    for (CompilationUnitTree compilationUnit : compilationUnits) {
        FindClass finder = new FindClass();
        finder.visitTopLevel((JCTree.JCCompilationUnit) compilationUnit);
        for (JCTree.JCClassDecl classDecl : finder.decls) {
            if (classDecl.getSimpleName().contentEquals(className)) {
                Optional<GuardedByExpression> guardExpression = GuardedByBinder.bindString(exprString, GuardedBySymbolResolver.from(ASTHelpers.getSymbol(classDecl), compilationUnit, task.getContext(), null));
                if (!guardExpression.isPresent()) {
                    throw new IllegalGuardedBy(exprString);
                }
                return guardExpression.get().debugPrint();
            }
        }
    }
    throw new AssertionError("Couldn't find a class with the given name: " + className);
}

Example 19 with JavaCompiler

use of javax.tools.JavaCompiler in project error-prone by google.

the class ErrorProneJavaCompilerTest method testGetStandardJavaFileManager.

@Test
public void testGetStandardJavaFileManager() {
    JavaCompiler mockCompiler = mock(JavaCompiler.class);
    ErrorProneJavaCompiler compiler = new ErrorProneJavaCompiler(mockCompiler);
    JavaFileObjectDiagnosticListener listener = mock(JavaFileObjectDiagnosticListener.class);
    Locale locale = Locale.CANADA;
    compiler.getStandardFileManager(listener, locale, null);
    verify(mockCompiler).getStandardFileManager(listener, locale, null);
}

Example 20 with JavaCompiler

use of javax.tools.JavaCompiler in project error-prone by google.

the class ErrorProneJavaCompilerTest method doCompile.

private CompilationResult doCompile(List<String> fileNames, List<String> extraArgs, List<Class<? extends BugChecker>> customCheckers) {
    DiagnosticTestHelper diagnosticHelper = new DiagnosticTestHelper();
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    PrintWriter printWriter = new PrintWriter(new OutputStreamWriter(outputStream, UTF_8), true);
    ErrorProneInMemoryFileManager fileManager = new ErrorProneInMemoryFileManager();
    List<String> args = Lists.newArrayList("-d", tempDir.getRoot().getAbsolutePath(), "-proc:none");
    args.addAll(extraArgs);
    JavaCompiler errorProneJavaCompiler = (customCheckers.isEmpty()) ? new ErrorProneJavaCompiler() : new ErrorProneJavaCompiler(ScannerSupplier.fromBugCheckerClasses(customCheckers));
    JavaCompiler.CompilationTask task = errorProneJavaCompiler.getTask(printWriter, fileManager, diagnosticHelper.collector, args, null, fileManager.forResources(getClass(), fileNames.toArray(new String[0])));
    try {
        fileManager.close();
    } catch (IOException e) {
        throw new IOError(e);
    }
    return new CompilationResult(task.call(), diagnosticHelper);
}