/*
* Copyright ( c ) 2010 , 2016 , 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 6968063 7127924
* @ summary provide examples of code that generate diagnostics
* @ modules jdk . compiler / com . sun . tools . javac . api
* jdk . compiler / com . sun . tools . javac . file
* jdk . compiler / com . sun . tools . javac . main
* jdk . compiler / com . sun . tools . javac . resources : open
* jdk . compiler / com . sun . tools . javac . util
* @ build Example CheckExamples DocCommentProcessor
* @ run main / othervm CheckExamples
*/
/*
* See CR 7127924 for info on why othervm is used .
*/
import java.io.*;
import java.nio.file.*;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.*;
/**
* Check invariants for a set of examples .
* - - each example should exactly declare the keys that will be generated when
* it is run .
* - - together , the examples should cover the set of resource keys in the
* compiler . properties bundle . A list of exceptions may be given in the
* not - yet . txt file . Entries on the not - yet . txt list should not be
* covered by examples .
* When new keys are added to the resource bundle , it is strongly recommended
* that corresponding new examples be added here , if at all practical , instead
* of simply and lazily being added to the not - yet . txt list .
*/
public class CheckExamples {
/**
* Standard entry point .
*/
public static void main(String... args) throws Exception {
boolean jtreg = (System.getProperty("test.src" ) != null );
Path tmpDir;
boolean deleteOnExit;
if (jtreg) {
// use standard jtreg scratch directory: the current directory
tmpDir = Paths.get(System.getProperty("user.dir" ));
deleteOnExit = false ;
} else {
tmpDir = Files.createTempDirectory(Paths.get(System.getProperty("java.io.tmpdir" )),
CheckExamples.class .getName());
deleteOnExit = true ;
}
Example.setTempDir(tmpDir.toFile());
try {
new CheckExamples().run();
} finally {
if (deleteOnExit) {
clean(tmpDir);
}
}
}
/**
* Run the test .
*/
void run() throws Exception {
Set<Example> examples = getExamples();
Set<String> notYetList = getNotYetList();
Set<String> declaredKeys = new TreeSet<String>();
for (Example e: examples) {
Set<String> e_decl = e.getDeclaredKeys();
Set<String> e_actual = e.getActualKeys();
for (String k: e_decl) {
if (!e_actual.contains(k))
error("Example " + e + " declares key " + k + " but does not generate it" );
}
for (String k: e_actual) {
if (!e_decl.contains(k))
error("Example " + e + " generates key " + k + " but does not declare it" );
}
for (String k: e.getDeclaredKeys()) {
if (notYetList.contains(k))
error("Example " + e + " declares key " + k + " which is also on the \" not yet\" list" );
declaredKeys.add(k);
}
}
Module jdk_compiler = ModuleLayer.boot().findModule("jdk.compiler" ).get();
ResourceBundle b =
ResourceBundle.getBundle("com.sun.tools.javac.resources.compiler" , jdk_compiler);
Set<String> resourceKeys = new TreeSet<String>(b.keySet());
for (String dk: declaredKeys) {
if (!resourceKeys.contains(dk))
error("Key " + dk + " is declared in tests but is not a valid key in resource bundle" );
}
for (String nk: notYetList) {
if (!resourceKeys.contains(nk))
error("Key " + nk + " is declared in not-yet list but is not a valid key in resource bundle" );
}
for (String rk: resourceKeys) {
if (!declaredKeys.contains(rk) && !notYetList.contains(rk))
error("Key " + rk + " is declared in resource bundle but is not in tests or not-yet list" );
}
System.err.println(examples.size() + " examples checked" );
System.err.println(notYetList.size() + " keys on not-yet list" );
Counts declaredCounts = new Counts(declaredKeys);
Counts resourceCounts = new Counts(resourceKeys);
List<String> rows = new ArrayList<String>(Arrays.asList(Counts.prefixes));
rows.add("other" );
rows.add("total" );
System.err.println();
System.err.println(String.format("%-14s %15s %15s %4s" ,
"prefix" , "#keys in tests" , "#keys in javac" , "%" ));
for (String p: rows) {
int d = declaredCounts.get(p);
int r = resourceCounts.get(p);
System.err.print(String.format("%-14s %15d %15d" , p, d, r));
if (r != 0 )
System.err.print(String.format(" %3d%%" , (d * 100 ) / r));
System.err.println();
}
if (errors > 0 )
throw new Exception(errors + " errors occurred." );
}
/**
* Get the complete set of examples to be checked .
*/
Set<Example> getExamples() {
Set<Example> results = new TreeSet<Example>();
File testSrc = new File(System.getProperty("test.src" ));
File examples = new File(testSrc, "examples" );
for (File f: examples.listFiles()) {
if (isValidExample(f))
results.add(new Example(f));
}
return results;
}
boolean isValidExample(File f) {
return (f.isDirectory() && f.list().length > 0 ) ||
(f.isFile() && f.getName().endsWith(".java" ));
}
/**
* Get the contents of the " not - yet " list .
*/
Set<String> getNotYetList() {
Set<String> results = new TreeSet<String>();
File testSrc = new File(System.getProperty("test.src" ));
File notYetList = new File(testSrc, "examples.not-yet.txt" );
try {
String[] lines = read(notYetList).split("[\r\n]" );
for (String line: lines) {
int hash = line.indexOf("#" );
if (hash != -1 )
line = line.substring(0 , hash).trim();
if (line.matches("[A-Za-z0-9-_.]+" ))
results.add(line);
}
} catch (IOException e) {
throw new Error(e);
}
return results;
}
/**
* Read the contents of a file .
*/
String read(File f) throws IOException {
byte [] bytes = new byte [(int ) f.length()];
DataInputStream in = new DataInputStream(new FileInputStream(f));
try {
in.readFully(bytes);
} finally {
in.close();
}
return new String(bytes);
}
/**
* Report an error .
*/
void error(String msg) {
System.err.println("Error: " + msg);
errors++;
}
int errors;
/**
* Clean the contents of a directory .
*/
static void clean(Path dir) throws IOException {
Files.walkFileTree(dir, new SimpleFileVisitor<Path>() {
@Override
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
Files.delete (file);
return super .visitFile(file, attrs);
}
@Override
public FileVisitResult postVisitDirectory(Path dir, IOException exc) throws IOException {
if (exc == null ) Files.delete (dir);
return super .postVisitDirectory(dir, exc);
}
});
}
static class Counts {
static String[] prefixes = {
"compiler.err." ,
"compiler.warn." ,
"compiler.note." ,
"compiler.misc."
};
Counts(Set<String> keys) {
nextKey:
for (String k: keys) {
for (String p: prefixes) {
if (k.startsWith(p)) {
inc(p);
continue nextKey;
}
}
inc("other" );
}
table.put("total" , keys.size());
}
int get(String p) {
Integer i = table.get(p);
return (i == null ? 0 : i);
}
void inc(String p) {
Integer i = table.get(p);
table.put(p, (i == null ? 1 : i + 1 ));
}
Map<String,Integer> table = new HashMap<String,Integer>();
};
}
Messung V0.5 in Prozent C=89 H=84 G=86
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-06-10)
¤
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