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/*******************************************************************************
* Copyright (c) 2000, 2023 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.compiler.util;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import java.util.Properties;
@SuppressWarnings({"rawtypes", "unchecked"})
public final class Messages {
private static class MessagesProperties extends Properties {
private static final int MOD_EXPECTED = Modifier.PUBLIC | Modifier.STATIC;
private static final int MOD_MASK = MOD_EXPECTED | Modifier.FINAL;
private static final long serialVersionUID = 1L;
private final Map fields;
public MessagesProperties(Field[] fieldArray, String bundleName) {
super();
final int len = fieldArray.length;
this.fields = new HashMap(len * 2);
for (int i = 0; i < len; i++) {
this.fields.put(fieldArray[i].getName(), fieldArray[i]);
}
}
@Override
public synchronized Object put(Object key, Object value) {
try {
Field field = (Field) this.fields.get(key);
if (field == null) {
return null;
}
//can only set value of public static non-final fields
if ((field.getModifiers() & MOD_MASK) != MOD_EXPECTED)
return null;
// Set the value into the field. We should never get an exception here because
// we know we have a public static non-final field. If we do get an exception, silently
// log it and continue. This means that the field will (most likely) be un-initialized and
// will fail later in the code and if so then we will see both the NPE and this error.
try {
field.set(null, value);
} catch (Exception e) {
// ignore
}
} catch (SecurityException e) {
// ignore
}
return null;
}
}
private static String[] nlSuffixes;
private static final String EXTENSION = ".properties"; //$NON-NLS-1$
private static final String BUNDLE_NAME = "org.eclipse.jdt.internal.compiler.messages";//$NON-NLS-1$
private Messages() {
// Do not instantiate
}
public static String compilation_unresolvedProblem;
public static String compilation_unresolvedProblems;
public static String compilation_request;
public static String compilation_loadBinary;
public static String compilation_process;
public static String compilation_write;
public static String compilation_done;
public static String compilation_units;
public static String compilation_unit;
public static String compilation_internalError;
public static String compilation_beginningToCompile;
public static String compilation_processing;
public static String output_isFile;
public static String output_notValidAll;
public static String output_notValid;
public static String problem_noSourceInformation;
public static String problem_atLine;
public static String abort_invalidAttribute;
public static String abort_invalidExceptionAttribute;
public static String abort_invalidOpcode;
public static String abort_missingCode;
public static String abort_againstSourceModel;
public static String abort_externaAnnotationFile;
public static String accept_cannot;
public static String parser_incorrectPath;
public static String parser_moveFiles;
public static String parser_syntaxRecovery;
public static String parser_regularParse;
public static String parser_missingFile;
public static String parser_corruptedFile;
public static String parser_endOfFile;
public static String parser_endOfConstructor;
public static String parser_endOfMethod;
public static String parser_endOfInitializer;
public static String ast_missingCode;
public static String constant_cannotCastedInto;
public static String constant_cannotConvertedTo;
public static String switch_expression;
public static String text_block;
public static String pattern_matching_instanceof;
public static String records;
public static String sealed_types;
public static String pattern_matching_switch;
public static String record_patterns;
public static String unnamed_patterns_and_vars;
public static String implicit_classes_and_instance_main_methods;
public static String string_templates;
public static String statements_before_super;
static {
initializeMessages(BUNDLE_NAME, Messages.class);
}
/**
* Bind the given message's substitution locations with the given string values.
*
* @param message the message to be manipulated
* @return the manipulated String
*/
public static String bind(String message) {
return bind(message, null);
}
/**
* Bind the given message's substitution locations with the given string values.
*
* @param message the message to be manipulated
* @param binding the object to be inserted into the message
* @return the manipulated String
*/
public static String bind(String message, Object binding) {
return bind(message, new Object[] {binding});
}
/**
* Bind the given message's substitution locations with the given string values.
*
* @param message the message to be manipulated
* @param binding1 An object to be inserted into the message
* @param binding2 A second object to be inserted into the message
* @return the manipulated String
*/
public static String bind(String message, Object binding1, Object binding2) {
return bind(message, new Object[] {binding1, binding2});
}
/**
* Bind the given message's substitution locations with the given string values.
*
* @param message the message to be manipulated
* @param bindings An array of objects to be inserted into the message
* @return the manipulated String
*/
public static String bind(String message, Object[] bindings) {
return MessageFormat.format(message, bindings);
}
/*
* Build an array of directories to search
*/
private static String[] buildVariants(String root) {
if (nlSuffixes == null) {
//build list of suffixes for loading resource bundles
String nl = Locale.getDefault().toString();
ArrayList result = new ArrayList(4);
int lastSeparator;
while (true) {
result.add('_' + nl + EXTENSION);
lastSeparator = nl.lastIndexOf('_');
if (lastSeparator == -1)
break;
nl = nl.substring(0, lastSeparator);
}
//add the empty suffix last (most general)
result.add(EXTENSION);
nlSuffixes = (String[]) result.toArray(new String[result.size()]);
}
root = root.replace('.', '/');
String[] variants = new String[nlSuffixes.length];
for (int i = 0; i < variants.length; i++)
variants[i] = root + nlSuffixes[i];
return variants;
}
public static void initializeMessages(String bundleName, Class clazz) {
// load the resource bundle and set the fields
final Field[] fields = clazz.getDeclaredFields();
load(bundleName, clazz.getClassLoader(), fields);
// iterate over the fields in the class to make sure that there aren't any empty ones
final int MOD_EXPECTED = Modifier.PUBLIC | Modifier.STATIC;
final int MOD_MASK = MOD_EXPECTED | Modifier.FINAL;
final int numFields = fields.length;
for (int i = 0; i < numFields; i++) {
Field field = fields[i];
if ((field.getModifiers() & MOD_MASK) != MOD_EXPECTED)
continue;
try {
// Set the value into the field if its empty. We should never get an exception here because
// we know we have a public static non-final field. If we do get an exception, silently
// log it and continue. This means that the field will (most likely) be un-initialized and
// will fail later in the code and if so then we will see both the NPE and this error.
if (field.get(clazz) == null) {
String value = "Missing message: " + field.getName() + " in: " + bundleName; //$NON-NLS-1$ //$NON-NLS-2$
field.set(null, value);
}
} catch (IllegalArgumentException | IllegalAccessException e) {
// ignore
}
}
}
/**
* Load the given resource bundle using the specified class loader.
*/
public static void load(final String bundleName, final ClassLoader loader, final Field[] fields) {
final String[] variants = buildVariants(bundleName);
// search the dirs in reverse order so the cascading defaults is set correctly
for (int i = variants.length; --i >= 0;) {
try (InputStream input = createInputStream(loader, variants[i])) {
if (input == null) {
continue;
}
final MessagesProperties properties = new MessagesProperties(fields, bundleName);
properties.load(input);
} catch (IOException e) {
// ignore
}
}
}
private static InputStream createInputStream(final ClassLoader loader, String variant) {
return (loader == null) ? ClassLoader.getSystemResourceAsStream(variant)
: loader.getResourceAsStream(variant);
}
}
