jdk8-mips64-public/langtools: comparison test/tools/javac/treeannotests/TestProcessor.java

--1:000000000000
+:959103a6100f
+/*
+* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+*
+* This code is free software; you can redistribute it and/or modify it
+* under the terms of the GNU General Public License version 2 only, as
+* published by the Free Software Foundation.
+*
+* This code is distributed in the hope that it will be useful, but WITHOUT
+* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+* version 2 for more details (a copy is included in the LICENSE file that
+* accompanied this code).
+*
+* You should have received a copy of the GNU General Public License version
+* 2 along with this work; if not, write to the Free Software Foundation,
+* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+*
+* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+* or visit www.oracle.com if you need additional information or have any
+* questions.
+*/
+import java.io.*;
+import java.util.*;
+import javax.annotation.processing.*;
+import javax.lang.model.*;
+import javax.lang.model.element.*;
+import javax.lang.model.util.*;
+import javax.tools.*;
+import com.sun.source.util.*;
+import com.sun.tools.javac.code.BoundKind;
+import com.sun.tools.javac.tree.JCTree.*;
+import com.sun.tools.javac.tree.TreeScanner;
+import com.sun.tools.javac.tree.*;
+import com.sun.tools.javac.util.List;
+/**
+* Test processor used to check test programs using the @Test, @DA, and @TA
+* annotations.
+*
+* The processor looks for elements annotated with @Test, and analyzes the
+* syntax trees for those elements. Within such trees, the processor looks
+* for the DA annotations on decls and TA annotations on types.
+* The value of these annotations should be a simple string rendition of
+* the tree node to which it is attached.
+* The expected number of annotations is given by the parameter to the
+* @Test annotation itself.
+*/
+@SupportedAnnotationTypes({"Test"})
+public class TestProcessor extends AbstractProcessor {
+public SourceVersion getSupportedSourceVersion() {
+return SourceVersion.latest();
+}
+/** Process trees for elements annotated with the @Test(n) annotation. */
+public boolean process(Set<? extends TypeElement> annos, RoundEnvironment renv) {
+if (renv.processingOver())
+return true;
+Elements elements = processingEnv.getElementUtils();
+Trees trees = Trees.instance(processingEnv);
+TypeElement testAnno = elements.getTypeElement("Test");
+for (Element elem: renv.getElementsAnnotatedWith(testAnno)) {
+System.err.println("ELEM: " + elem);
+int count = getValue(getAnnoMirror(elem, testAnno), Integer.class);
+System.err.println("count: " + count);
+TreePath p = trees.getPath(elem);
+JavaFileObject file = p.getCompilationUnit().getSourceFile();
+JCTree tree = (JCTree) p.getLeaf();
+System.err.println("tree: " + tree);
+new TestScanner(file).check(tree, count);
+}
+return true;
+}
+/** Get the AnnotationMirror on an element for a given annotation. */
+AnnotationMirror getAnnoMirror(Element e, TypeElement anno) {
+Types types = processingEnv.getTypeUtils();
+for (AnnotationMirror m: e.getAnnotationMirrors()) {
+if (types.isSameType(m.getAnnotationType(), anno.asType()))
+return m;
+}
+return null;
+}
+/** Get the value of the value element of an annotation mirror. */
+<T> T getValue(AnnotationMirror m, Class<T> type) {
+for (Map.Entry<? extends ExecutableElement,? extends AnnotationValue> e: m.getElementValues().entrySet()) {
+ExecutableElement ee = e.getKey();
+if (ee.getSimpleName().contentEquals("value")) {
+AnnotationValue av = e.getValue();
+return type.cast(av.getValue());
+}
+}
+return null;
+}
+/** Report an error to the annotation processing system. */
+void error(String msg) {
+Messager messager = processingEnv.getMessager();
+messager.printMessage(Diagnostic.Kind.ERROR, msg);
+}
+/** Report an error to the annotation processing system. */
+void error(JavaFileObject file, JCTree tree, String msg) {
+// need better API for reporting tree position errors to the messager
+Messager messager = processingEnv.getMessager();
+String text = file.getName() + ":" + getLine(file, tree) + ": " + msg;
+messager.printMessage(Diagnostic.Kind.ERROR, text);
+}
+/** Get the line number for the primary position for a tree.
+* The code is intended to be simple, although not necessarily efficient.
+* However, note that a file manager such as JavacFileManager is likely
+* to cache the results of file.getCharContent, avoiding the need to read
+* the bits from disk each time this method is called.
+*/
+int getLine(JavaFileObject file, JCTree tree) {
+try {
+CharSequence cs = file.getCharContent(true);
+int line = 1;
+for (int i = 0; i < tree.pos; i++) {
+if (cs.charAt(i) == '\n') // jtreg tests always use Unix line endings
+line++;
+}
+return line;
+} catch (IOException e) {
+return -1;
+}
+}
+/** Scan a tree, looking for @DA and @TA annotations, and verifying that such
+* annotations are attached to the expected tree node matching the string
+* parameter of the annotation.
+*/
+class TestScanner extends TreeScanner {
+/** Create a scanner for a given file. */
+TestScanner(JavaFileObject file) {
+this.file = file;
+}
+/** Check the annotations in a given tree. */
+void check(JCTree tree, int expectCount) {
+foundCount = 0;
+scan(tree);
+if (foundCount != expectCount)
+error(file, tree, "Wrong number of annotations found: " + foundCount + ", expected: " + expectCount);
+}
+/** Check @DA annotations on a class declaration. */
+@Override
+public void visitClassDef(JCClassDecl tree) {
+super.visitClassDef(tree);
+check(tree.mods.annotations, "DA", tree);
+}
+/** Check @DA annotations on a method declaration. */
+@Override
+public void visitMethodDef(JCMethodDecl tree) {
+super.visitMethodDef(tree);
+check(tree.mods.annotations, "DA", tree);
+}
+/** Check @DA annotations on a field, parameter or local variable declaration. */
+@Override
+public void visitVarDef(JCVariableDecl tree) {
+super.visitVarDef(tree);
+check(tree.mods.annotations, "DA", tree);
+}
+/** Check @TA annotations on a type. */
+public void visitAnnotatedType(JCAnnotatedType tree) {
+super.visitAnnotatedType(tree);
+check(tree.annotations, "TA", tree);
+}
+/** Check to see if a list of annotations contains a named annotation, and
+* if so, verify the annotation is expected by comparing the value of the
+* annotation's argument against the string rendition of the reference tree
+* node.
+* @param annos the list of annotations to be checked
+* @param name  the name of the annotation to be checked
+* @param tree  the tree against which to compare the annotations's argument
+*/
+void check(List<? extends JCAnnotation> annos, String name, JCTree tree) {
+for (List<? extends JCAnnotation> l = annos; l.nonEmpty(); l = l.tail) {
+JCAnnotation anno = l.head;
+if (anno.annotationType.toString().equals(name) && (anno.args.size() == 1)) {
+String expect = getStringValue(anno.args.head);
+foundCount++;
+System.err.println("found: " + name + " " + expect);
+String found = new TypePrinter().print(tree);
+if (!found.equals(expect))
+error(file, anno, "Unexpected result: expected: \"" + expect + "\", found: \"" + found + "\"");
+}
+}
+}
+/** Get the string value of an annotation argument, which is given by the
+* expression <i>name</i>=<i>value</i>.
+*/
+String getStringValue(JCExpression e) {
+if (e.hasTag(JCTree.Tag.ASSIGN)) {
+JCAssign a = (JCAssign) e;
+JCExpression rhs = a.rhs;
+if (rhs.hasTag(JCTree.Tag.LITERAL)) {
+JCLiteral l = (JCLiteral) rhs;
+return (String) l.value;
+}
+} else if (e.hasTag(JCTree.Tag.LITERAL)) {
+JCLiteral l = (JCLiteral) e;
+return (String) l.value;
+}
+throw new IllegalArgumentException(e.toString());
+}
+/** The file for the tree. Used to locate errors. */
+JavaFileObject file;
+/** The number of annotations that have been found. @see #check */
+int foundCount;
+}
+/** Convert a type or decl tree to a reference string used by the @DA and @TA annotations. */
+class TypePrinter extends Visitor {
+/** Convert a type or decl tree to a string. */
+String print(JCTree tree) {
+if (tree == null)
+return null;
+tree.accept(this);
+return result;
+}
+String print(List<? extends JCTree> list) {
+return print(list, ", ");
+}
+String print(List<? extends JCTree> list, String sep) {
+StringBuilder sb = new StringBuilder();
+if (list.nonEmpty()) {
+sb.append(print(list.head));
+for (List<? extends JCTree> l = list.tail; l.nonEmpty(); l = l.tail) {
+sb.append(sep);
+sb.append(print(l.head));
+}
+}
+return sb.toString();
+}
+@Override
+public void visitClassDef(JCClassDecl tree) {
+result = tree.name.toString();
+}
+@Override
+public void visitMethodDef(JCMethodDecl tree) {
+result = tree.name.toString();
+}
+@Override
+public void visitVarDef(JCVariableDecl tree) {
+tree.vartype.accept(this);
+}
+@Override
+public void visitAnnotatedType(JCAnnotatedType tree) {
+tree.underlyingType.accept(this);
+}
+@Override
+public void visitTypeIdent(JCPrimitiveTypeTree tree) {
+result = tree.toString();
+}
+@Override
+public void visitTypeArray(JCArrayTypeTree tree) {
+result = print(tree.elemtype) + "[]";
+}
+@Override
+public void visitTypeApply(JCTypeApply tree) {
+result = print(tree.clazz) + "<" + print(tree.arguments) + ">";
+}
+@Override
+public void visitTypeParameter(JCTypeParameter tree) {
+if (tree.bounds.isEmpty())
+result = tree.name.toString();
+else
+result = tree.name + " extends " + print(tree.bounds, "&");
+}
+@Override
+public void visitWildcard(JCWildcard tree) {
+if (tree.kind.kind == BoundKind.UNBOUND)
+result = tree.kind.toString();
+else
+result = tree.kind + " " + print(tree.inner);
+}
+private String result;
+}
+}

Mercurial > jdk8-mips64-public > langtools / file comparison

comparison: test/tools/javac/treeannotests/TestProcessor.java

test/tools/javac/treeannotests/TestProcessor.java