jdk8-mips64-public/langtools: test/tools/javac/tree/TreePosRoundsTest.java@4868a36f6fd8 (annotated)

test/tools/javac/tree/TreePosRoundsTest.java@4868a36f6fd8 (annotated)

test/tools/javac/tree/TreePosRoundsTest.java

Tue, 28 Dec 2010 15:54:52 -0800

author: ohair
date: Tue, 28 Dec 2010 15:54:52 -0800
changeset 798: 4868a36f6fd8
parent 696: d4df3b6ee729
child 2525: 2eb010b6cb22
permissions: -rw-r--r--

6962318: Update copyright year
Reviewed-by: xdono

 /*
  * Copyright (c) 2010, 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.
  */
 /*
  * @test
  * @bug 6985205 6986246
  * @summary access to tree positions and doc comments may be lost across annotation processing rounds
  * @build TreePosRoundsTest
  * @compile -proc:only -processor TreePosRoundsTest TreePosRoundsTest.java
  * @run main TreePosRoundsTest
  */
 import java.io.*;
 import java.util.*;
 import javax.annotation.processing.*;
 import javax.lang.model.*;
 import javax.lang.model.element.*;
 import javax.tools.*;
 import com.sun.source.tree.*;
 import com.sun.source.util.*;
 import javax.tools.JavaCompiler.CompilationTask;
 // This test is an annotation processor that performs multiple rounds of
 // processing, and on each round, it checks that source positions are
 // available and correct.
 //
 // The test can be run directly as a processor from the javac command line
 // or via JSR 199 by invoking the main program.
 @SupportedAnnotationTypes("*")
 public class TreePosRoundsTest extends AbstractProcessor {
     public static void main(String... args) throws Exception {
         String testSrc = System.getProperty("test.src");
         String testClasses = System.getProperty("test.classes");
         JavaCompiler c = ToolProvider.getSystemJavaCompiler();
         StandardJavaFileManager fm = c.getStandardFileManager(null, null, null);
         String thisName = TreePosRoundsTest.class.getName();
         File thisFile = new File(testSrc, thisName + ".java");
         Iterable<? extends JavaFileObject> files = fm.getJavaFileObjects(thisFile);
         List<String> options = Arrays.asList(
                 "-proc:only",
                 "-processor", thisName,
                 "-processorpath", testClasses);
         CompilationTask t = c.getTask(null, fm, null, options, null, files);
         boolean ok = t.call();
         if (!ok)
             throw new Exception("processing failed");
     }
     Filer filer;
     Messager messager;
     Trees trees;
     @Override
     public SourceVersion getSupportedSourceVersion() {
         return SourceVersion.latest();
     }
     @Override
     public void init(ProcessingEnvironment pEnv) {
         super.init(pEnv);
         filer = pEnv.getFiler();
         messager = pEnv.getMessager();
         trees = Trees.instance(pEnv);
     }
     int round = 0;
     @Override
     public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
         round++;
         // Scan trees for elements, verifying source tree positions
         for (Element e: roundEnv.getRootElements()) {
             try {
                 TreePath p = trees.getPath(e);
                 new TestTreeScanner(p.getCompilationUnit(), trees).scan(trees.getPath(e), null);
             } catch (IOException ex) {
                 messager.printMessage(Diagnostic.Kind.ERROR,
                         "Cannot get source: " + ex, e);
             }
         }
         final int MAXROUNDS = 3;
         if (round < MAXROUNDS)
             generateSource("Gen" + round);
         return true;
     }
     void generateSource(String name) {
         StringBuilder text = new StringBuilder();
         text.append("class ").append(name).append("{\n");
         text.append("    int one = 1;\n");
         text.append("    int two = 2;\n");
         text.append("    int three = one + two;\n");
         text.append("}\n");
         try {
             JavaFileObject fo = filer.createSourceFile(name);
             Writer out = fo.openWriter();
             try {
                 out.write(text.toString());
             } finally {
                 out.close();
             }
         } catch (IOException e) {
             throw new Error(e);
         }
     }
     class TestTreeScanner extends TreePathScanner<Void,Void> {
         TestTreeScanner(CompilationUnitTree unit, Trees trees) throws IOException {
             this.unit = unit;
             JavaFileObject sf = unit.getSourceFile();
             source = sf.getCharContent(true).toString();
             sourcePositions = trees.getSourcePositions();
         }
         @Override
         public Void visitVariable(VariableTree tree, Void _) {
             check(getCurrentPath());
             return super.visitVariable(tree, _);
         }
         void check(TreePath tp) {
             Tree tree = tp.getLeaf();
             String expect = tree.toString();
             if (tree.getKind() == Tree.Kind.VARIABLE) {
                 // tree.toString() does not know enough context to add ";",
                 // so deal with that manually...
                 Tree.Kind enclKind = tp.getParentPath().getLeaf().getKind();
                 //System.err.println("  encl: " +enclKind);
                 if (enclKind == Tree.Kind.CLASS || enclKind == Tree.Kind.BLOCK)
                     expect += ";";
             }
             //System.err.println("expect: " + expect);
             int start = (int)sourcePositions.getStartPosition(unit, tree);
             if (start == Diagnostic.NOPOS) {
                 messager.printMessage(Diagnostic.Kind.ERROR, "start pos not set for " + trim(tree));
                 return;
             }
             int end = (int)sourcePositions.getEndPosition(unit, tree);
             if (end == Diagnostic.NOPOS) {
                 messager.printMessage(Diagnostic.Kind.ERROR, "end pos not set for " + trim(tree));
                 return;
             }
             String found = source.substring(start, end);
             //System.err.println(" found: " + found);
             // allow for long lines, in which case just compare beginning and
             // end of the strings
             boolean equal;
             if (found.contains("\n")) {
                 String head = found.substring(0, found.indexOf("\n"));
                 String tail = found.substring(found.lastIndexOf("\n")).trim();
                 equal = expect.startsWith(head) && expect.endsWith(tail);
             } else {
                 equal = expect.equals(found);
             }
             if (!equal) {
                 messager.printMessage(Diagnostic.Kind.ERROR,
                         "unexpected value found: '" + found + "'; expected: '" + expect + "'");
             }
         }
         String trim(Tree tree) {
             final int MAXLEN = 32;
             String s = tree.toString().replaceAll("\\s+", " ").trim();
             return (s.length() < MAXLEN) ? s : s.substring(0, MAXLEN);
         }
         CompilationUnitTree unit;
         SourcePositions sourcePositions;
         String source;
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

test/tools/javac/tree/TreePosRoundsTest.java@4868a36f6fd8 (annotated)

test/tools/javac/tree/TreePosRoundsTest.java