jdk8-mips64-public/langtools: comparison test/tools/javac/tree/AbstractTreeScannerTest.java

-:014cf6234586
+:fc73f83cd563
+/*
+* 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.
+*/
+import java.io.*;
+import java.lang.reflect.*;
+import java.util.*;
+import javax.tools.*;
+import com.sun.source.tree.CompilationUnitTree;
+import com.sun.source.tree.Tree;
+import com.sun.source.util.JavacTask;
+import com.sun.tools.javac.api.JavacTool;
+import com.sun.tools.javac.tree.JCTree;
+import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
+import com.sun.tools.javac.util.List;
+public abstract class AbstractTreeScannerTest {
+/**
+* Run the program. A base directory can be provided for file arguments.
+* In jtreg mode, the -r option can be given to change the default base
+* directory to the test root directory. For other options, see usage().
+* @param baseDir base directory for any file arguments.
+* @param args command line args
+* @return true if successful or in gui mode
+*/
+boolean run(File baseDir, String... args) {
+if (args.length == 0) {
+usage(System.out);
+return true;
+}
+ArrayList<File> files = new ArrayList<File>();
+for (int i = 0; i < args.length; i++) {
+String arg = args[i];
+if (arg.equals("-q"))
+quiet = true;
+else if (arg.equals("-v"))
+verbose = true;
+else if (arg.equals("-r")) {
+File d = baseDir;
+while (!new File(d, "TEST.ROOT").exists()) {
+d = d.getParentFile();
+if (d == null)
+throw new Error("cannot find TEST.ROOT");
+}
+baseDir = d;
+}
+else if (arg.startsWith("-"))
+throw new Error("unknown option: " + arg);
+else {
+while (i < args.length)
+files.add(new File(baseDir, args[i++]));
+}
+}
+for (File file: files) {
+if (file.exists())
+test(file);
+else
+error("File not found: " + file);
+}
+if (fileCount != 1)
+System.err.println(fileCount + " files read");
+System.err.println(treeCount + " tree nodes compared");
+if (errors > 0)
+System.err.println(errors + " errors");
+return (errors == 0);
+}
+/**
+* Print command line help.
+* @param out output stream
+*/
+void usage(PrintStream out) {
+out.println("Usage:");
+out.println("  java " + getClass().getName() + " options... files...");
+out.println("");
+out.println("where options include:");
+out.println("-q        Quiet: don't report on inapplicable files");
+out.println("-v        Verbose: report on files as they are being read");
+out.println("");
+out.println("files may be directories or files");
+out.println("directories will be scanned recursively");
+out.println("non java files, or java files which cannot be parsed, will be ignored");
+out.println("");
+}
+/**
+* Test a file. If the file is a directory, it will be recursively scanned
+* for java files.
+* @param file the file or directory to test
+*/
+void test(File file) {
+if (file.isDirectory()) {
+for (File f: file.listFiles()) {
+test(f);
+}
+return;
+}
+if (file.isFile() && file.getName().endsWith(".java")) {
+try {
+if (verbose)
+System.err.println(file);
+fileCount++;
+treeCount += test(read(file));
+} catch (ParseException e) {
+if (!quiet) {
+error("Error parsing " + file + "\n" + e.getMessage());
+}
+} catch (IOException e) {
+error("Error reading " + file + ": " + e);
+}
+return;
+}
+if (!quiet)
+error("File " + file + " ignored");
+}
+abstract int test(JCCompilationUnit t);
+/**
+* Read a file.
+* @param file the file to be read
+* @return the tree for the content of the file
+* @throws IOException if any IO errors occur
+* @throws TreePosTest.ParseException if any errors occur while parsing the file
+*/
+JCCompilationUnit read(File file) throws IOException, ParseException {
+StringWriter sw = new StringWriter();
+PrintWriter pw = new PrintWriter(sw);
+Reporter r = new Reporter(pw);
+JavacTool tool = JavacTool.create();
+StandardJavaFileManager fm = tool.getStandardFileManager(r, null, null);
+Iterable<? extends JavaFileObject> files = fm.getJavaFileObjects(file);
+JavacTask task = tool.getTask(pw, fm, r, Collections.<String>emptyList(), null, files);
+Iterable<? extends CompilationUnitTree> trees = task.parse();
+pw.flush();
+if (r.errors > 0)
+throw new ParseException(sw.toString());
+Iterator<? extends CompilationUnitTree> iter = trees.iterator();
+if (!iter.hasNext())
+throw new Error("no trees found");
+JCCompilationUnit t = (JCCompilationUnit) iter.next();
+if (iter.hasNext())
+throw new Error("too many trees found");
+return t;
+}
+/**
+* Report an error. When the program is complete, the program will either
+* exit or throw an Error if any errors have been reported.
+* @param msg the error message
+*/
+void error(String msg) {
+System.err.println(msg);
+errors++;
+}
+/**
+*  Report an error for a specific tree node.
+*  @param file the source file for the tree
+*  @param t    the tree node
+*  @param label an indication of the error
+*/
+void error(JavaFileObject file, Tree tree, String msg) {
+JCTree t = (JCTree) tree;
+error(file.getName() + ":" + getLine(file, t) + ": " + msg + " " + trim(t, 64));
+}
+/**
+* Get a trimmed string for a tree node, with normalized white space and limited length.
+*/
+String trim(Tree tree, int len) {
+JCTree t = (JCTree) tree;
+String s = t.toString().replaceAll("[\r\n]+", " ").replaceAll(" +", " ");
+return (s.length() < len) ? s : s.substring(0, len);
+}
+/** Number of files that have been analyzed. */
+int fileCount;
+/** Number of trees that have been successfully compared. */
+int treeCount;
+/** Number of errors reported. */
+int errors;
+/** Flag: don't report irrelevant files. */
+boolean quiet;
+/** Flag: report files as they are processed. */
+boolean verbose;
+/**
+* Thrown when errors are found parsing a java file.
+*/
+private static class ParseException extends Exception {
+ParseException(String msg) {
+super(msg);
+}
+}
+/**
+* DiagnosticListener to report diagnostics and count any errors that occur.
+*/
+private static class Reporter implements DiagnosticListener<JavaFileObject> {
+Reporter(PrintWriter out) {
+this.out = out;
+}
+public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
+out.println(diagnostic);
+switch (diagnostic.getKind()) {
+case ERROR:
+errors++;
+}
+}
+int errors;
+PrintWriter out;
+}
+/**
+* Get the set of fields for a tree node that may contain child tree nodes.
+* These are the fields that are subtypes of JCTree or List.
+* The results are cached, based on the tree's tag.
+*/
+Set<Field> getFields(JCTree tree) {
+Set<Field> fields = map.get(tree.getTag());
+if (fields == null) {
+fields = new HashSet<Field>();
+for (Field f: tree.getClass().getFields()) {
+Class<?> fc = f.getType();
+if (JCTree.class.isAssignableFrom(fc) || List.class.isAssignableFrom(fc))
+fields.add(f);
+}
+map.put(tree.getTag(), fields);
+}
+return fields;
+}
+// where
+Map<Integer, Set<Field>> map = new HashMap<Integer,Set<Field>>();
+/** 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;
+}
+}
+}

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

comparison: test/tools/javac/tree/AbstractTreeScannerTest.java

test/tools/javac/tree/AbstractTreeScannerTest.java