Removed compiler/ directory from repository

dart/compiler/java/com/google/dart/compiler/util/apache/CharUtils.java

Index: dart/compiler/java/com/google/dart/compiler/util/apache/CharUtils.java
diff --git a/dart/compiler/java/com/google/dart/compiler/util/apache/CharUtils.java b/dart/compiler/java/com/google/dart/compiler/util/apache/CharUtils.java
deleted file mode 100644
index 4e8ca5e0175c70e6f05d29c5e17a2c5c7e702c99..0000000000000000000000000000000000000000
--- a/dart/compiler/java/com/google/dart/compiler/util/apache/CharUtils.java
+++ /dev/null
@@ -1,546 +0,0 @@
-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- * 
- *      http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.google.dart.compiler.util.apache;
-
-/**
- * <p>Operations on char primitives and Character objects.</p>
- *
- * <p>This class tries to handle {@code null} input gracefully.
- * An exception will not be thrown for a {@code null} input.
- * Each method documents its behaviour in more detail.</p>
- * <p>
- * NOTICE: This file is modified copy of its original Apache library.
- * It was moved to the different package, and changed to reduce number of dependencies.
- * 
- * <p>#ThreadSafe#</p>
- * @since 2.1
- * @version $Id: CharUtils.java 1158279 2011-08-16 14:06:45Z ggregory $
- */
-public class CharUtils {
-    
-    private static final String[] CHAR_STRING_ARRAY = new String[128];
-    
-    /**
-     * {@code \u000a} linefeed LF ('\n').
-     * 
-     * @see <a href="http://java.sun.com/docs/books/jls/third_edition/html/lexical.html#101089">JLF: Escape Sequences
-     *      for Character and String Literals</a>
-     * @since 2.2
-     */
-    public static final char LF = '\n';
-
-    /**
-     * {@code \u000d} carriage return CR ('\r').
-     * 
-     * @see <a href="http://java.sun.com/docs/books/jls/third_edition/html/lexical.html#101089">JLF: Escape Sequences
-     *      for Character and String Literals</a>
-     * @since 2.2
-     */
-    public static final char CR = '\r';
-    
-
-    static {
-        for (char c = 0; c < CHAR_STRING_ARRAY.length; c++) {
-            CHAR_STRING_ARRAY[c] = String.valueOf(c);
-        }
-    }
-
-    /**
-     * <p>{@code CharUtils} instances should NOT be constructed in standard programming.
-     * Instead, the class should be used as {@code CharUtils.toString('c');}.</p>
-     *
-     * <p>This constructor is public to permit tools that require a JavaBean instance
-     * to operate.</p>
-     */
-    public CharUtils() {
-      super();
-    }
-
-    //-----------------------------------------------------------------------
-    /**
-     * <p>Converts the character to a Character.</p>
-     * 
-     * <p>For ASCII 7 bit characters, this uses a cache that will return the
-     * same Character object each time.</p>
-     *
-     * <pre>
-     *   CharUtils.toCharacterObject(' ')  = ' '
-     *   CharUtils.toCharacterObject('A')  = 'A'
-     * </pre>
-     *
-     * @deprecated Java 5 introduced {@link Character#valueOf(char)} which caches chars 0 through 127.
-     * @param ch  the character to convert
-     * @return a Character of the specified character
-     */
-    @Deprecated
-    public static Character toCharacterObject(char ch) {
-        return Character.valueOf(ch);
-    }
-    
-    /**
-     * <p>Converts the String to a Character using the first character, returning
-     * null for empty Strings.</p>
-     * 
-     * <p>For ASCII 7 bit characters, this uses a cache that will return the
-     * same Character object each time.</p>
-     * 
-     * <pre>
-     *   CharUtils.toCharacterObject(null) = null
-     *   CharUtils.toCharacterObject("")   = null
-     *   CharUtils.toCharacterObject("A")  = 'A'
-     *   CharUtils.toCharacterObject("BA") = 'B'
-     * </pre>
-     *
-     * @param str  the character to convert
-     * @return the Character value of the first letter of the String
-     */
-    public static Character toCharacterObject(String str) {
-        if (StringUtils.isEmpty(str)) {
-            return null;
-        }
-        return Character.valueOf(str.charAt(0));
-    }
-    
-    //-----------------------------------------------------------------------
-    /**
-     * <p>Converts the Character to a char throwing an exception for {@code null}.</p>
-     * 
-     * <pre>
-     *   CharUtils.toChar(' ')  = ' '
-     *   CharUtils.toChar('A')  = 'A'
-     *   CharUtils.toChar(null) throws IllegalArgumentException
-     * </pre>
-     *
-     * @param ch  the character to convert
-     * @return the char value of the Character
-     * @throws IllegalArgumentException if the Character is null
-     */
-    public static char toChar(Character ch) {
-        if (ch == null) {
-            throw new IllegalArgumentException("The Character must not be null");
-        }
-        return ch.charValue();
-    }
-    
-    /**
-     * <p>Converts the Character to a char handling {@code null}.</p>
-     * 
-     * <pre>
-     *   CharUtils.toChar(null, 'X') = 'X'
-     *   CharUtils.toChar(' ', 'X')  = ' '
-     *   CharUtils.toChar('A', 'X')  = 'A'
-     * </pre>
-     *
-     * @param ch  the character to convert
-     * @param defaultValue  the value to use if the  Character is null
-     * @return the char value of the Character or the default if null
-     */
-    public static char toChar(Character ch, char defaultValue) {
-        if (ch == null) {
-            return defaultValue;
-        }
-        return ch.charValue();
-    }
-    
-    //-----------------------------------------------------------------------
-    /**
-     * <p>Converts the String to a char using the first character, throwing
-     * an exception on empty Strings.</p>
-     * 
-     * <pre>
-     *   CharUtils.toChar("A")  = 'A'
-     *   CharUtils.toChar("BA") = 'B'
-     *   CharUtils.toChar(null) throws IllegalArgumentException
-     *   CharUtils.toChar("")   throws IllegalArgumentException
-     * </pre>
-     *
-     * @param str  the character to convert
-     * @return the char value of the first letter of the String
-     * @throws IllegalArgumentException if the String is empty
-     */
-    public static char toChar(String str) {
-        if (StringUtils.isEmpty(str)) {
-            throw new IllegalArgumentException("The String must not be empty");
-        }
-        return str.charAt(0);
-    }
-    
-    /**
-     * <p>Converts the String to a char using the first character, defaulting
-     * the value on empty Strings.</p>
-     * 
-     * <pre>
-     *   CharUtils.toChar(null, 'X') = 'X'
-     *   CharUtils.toChar("", 'X')   = 'X'
-     *   CharUtils.toChar("A", 'X')  = 'A'
-     *   CharUtils.toChar("BA", 'X') = 'B'
-     * </pre>
-     *
-     * @param str  the character to convert
-     * @param defaultValue  the value to use if the  Character is null
-     * @return the char value of the first letter of the String or the default if null
-     */
-    public static char toChar(String str, char defaultValue) {
-        if (StringUtils.isEmpty(str)) {
-            return defaultValue;
-        }
-        return str.charAt(0);
-    }
-    
-    //-----------------------------------------------------------------------
-    /**
-     * <p>Converts the character to the Integer it represents, throwing an
-     * exception if the character is not numeric.</p>
-     * 
-     * <p>This method coverts the char '1' to the int 1 and so on.</p>
-     *
-     * <pre>
-     *   CharUtils.toIntValue('3')  = 3
-     *   CharUtils.toIntValue('A')  throws IllegalArgumentException
-     * </pre>
-     *
-     * @param ch  the character to convert
-     * @return the int value of the character
-     * @throws IllegalArgumentException if the character is not ASCII numeric
-     */
-    public static int toIntValue(char ch) {
-        if (isAsciiNumeric(ch) == false) {
-            throw new IllegalArgumentException("The character " + ch + " is not in the range '0' - '9'");
-        }
-        return ch - 48;
-    }
-    
-    /**
-     * <p>Converts the character to the Integer it represents, throwing an
-     * exception if the character is not numeric.</p>
-     * 
-     * <p>This method coverts the char '1' to the int 1 and so on.</p>
-     *
-     * <pre>
-     *   CharUtils.toIntValue('3', -1)  = 3
-     *   CharUtils.toIntValue('A', -1)  = -1
-     * </pre>
-     *
-     * @param ch  the character to convert
-     * @param defaultValue  the default value to use if the character is not numeric
-     * @return the int value of the character
-     */
-    public static int toIntValue(char ch, int defaultValue) {
-        if (isAsciiNumeric(ch) == false) {
-            return defaultValue;
-        }
-        return ch - 48;
-    }
-    
-    /**
-     * <p>Converts the character to the Integer it represents, throwing an
-     * exception if the character is not numeric.</p>
-     * 
-     * <p>This method coverts the char '1' to the int 1 and so on.</p>
-     *
-     * <pre>
-     *   CharUtils.toIntValue('3')  = 3
-     *   CharUtils.toIntValue(null) throws IllegalArgumentException
-     *   CharUtils.toIntValue('A')  throws IllegalArgumentException
-     * </pre>
-     *
-     * @param ch  the character to convert, not null
-     * @return the int value of the character
-     * @throws IllegalArgumentException if the Character is not ASCII numeric or is null
-     */
-    public static int toIntValue(Character ch) {
-        if (ch == null) {
-            throw new IllegalArgumentException("The character must not be null");
-        }
-        return toIntValue(ch.charValue());
-    }
-    
-    /**
-     * <p>Converts the character to the Integer it represents, throwing an
-     * exception if the character is not numeric.</p>
-     * 
-     * <p>This method coverts the char '1' to the int 1 and so on.</p>
-     *
-     * <pre>
-     *   CharUtils.toIntValue(null, -1) = -1
-     *   CharUtils.toIntValue('3', -1)  = 3
-     *   CharUtils.toIntValue('A', -1)  = -1
-     * </pre>
-     *
-     * @param ch  the character to convert
-     * @param defaultValue  the default value to use if the character is not numeric
-     * @return the int value of the character
-     */
-    public static int toIntValue(Character ch, int defaultValue) {
-        if (ch == null) {
-            return defaultValue;
-        }
-        return toIntValue(ch.charValue(), defaultValue);
-    }
-    
-    //-----------------------------------------------------------------------
-    /**
-     * <p>Converts the character to a String that contains the one character.</p>
-     * 
-     * <p>For ASCII 7 bit characters, this uses a cache that will return the
-     * same String object each time.</p>
-     *
-     * <pre>
-     *   CharUtils.toString(' ')  = " "
-     *   CharUtils.toString('A')  = "A"
-     * </pre>
-     *
-     * @param ch  the character to convert
-     * @return a String containing the one specified character
-     */
-    public static String toString(char ch) {
-        if (ch < 128) {
-            return CHAR_STRING_ARRAY[ch];
-        }
-        return new String(new char[] {ch});
-    }
-    
-    /**
-     * <p>Converts the character to a String that contains the one character.</p>
-     * 
-     * <p>For ASCII 7 bit characters, this uses a cache that will return the
-     * same String object each time.</p>
-     * 
-     * <p>If {@code null} is passed in, {@code null} will be returned.</p>
-     *
-     * <pre>
-     *   CharUtils.toString(null) = null
-     *   CharUtils.toString(' ')  = " "
-     *   CharUtils.toString('A')  = "A"
-     * </pre>
-     *
-     * @param ch  the character to convert
-     * @return a String containing the one specified character
-     */
-    public static String toString(Character ch) {
-        if (ch == null) {
-            return null;
-        }
-        return toString(ch.charValue());
-    }
-    
-    //--------------------------------------------------------------------------
-    /**
-     * <p>Converts the string to the Unicode format '\u0020'.</p>
-     * 
-     * <p>This format is the Java source code format.</p>
-     *
-     * <pre>
-     *   CharUtils.unicodeEscaped(' ') = "\u0020"
-     *   CharUtils.unicodeEscaped('A') = "\u0041"
-     * </pre>
-     * 
-     * @param ch  the character to convert
-     * @return the escaped Unicode string
-     */
-    public static String unicodeEscaped(char ch) {
-        if (ch < 0x10) {
-            return "\\u000" + Integer.toHexString(ch);
-        } else if (ch < 0x100) {
-            return "\\u00" + Integer.toHexString(ch);
-        } else if (ch < 0x1000) {
-            return "\\u0" + Integer.toHexString(ch);
-        }
-        return "\\u" + Integer.toHexString(ch);
-    }
-    
-    /**
-     * <p>Converts the string to the Unicode format '\u0020'.</p>
-     * 
-     * <p>This format is the Java source code format.</p>
-     * 
-     * <p>If {@code null} is passed in, {@code null} will be returned.</p>
-     *
-     * <pre>
-     *   CharUtils.unicodeEscaped(null) = null
-     *   CharUtils.unicodeEscaped(' ')  = "\u0020"
-     *   CharUtils.unicodeEscaped('A')  = "\u0041"
-     * </pre>
-     * 
-     * @param ch  the character to convert, may be null
-     * @return the escaped Unicode string, null if null input
-     */
-    public static String unicodeEscaped(Character ch) {
-        if (ch == null) {
-            return null;
-        }
-        return unicodeEscaped(ch.charValue());
-    }
-    
-    //--------------------------------------------------------------------------
-    /**
-     * <p>Checks whether the character is ASCII 7 bit.</p>
-     *
-     * <pre>
-     *   CharUtils.isAscii('a')  = true
-     *   CharUtils.isAscii('A')  = true
-     *   CharUtils.isAscii('3')  = true
-     *   CharUtils.isAscii('-')  = true
-     *   CharUtils.isAscii('\n') = true
-     *   CharUtils.isAscii('&copy;') = false
-     * </pre>
-     * 
-     * @param ch  the character to check
-     * @return true if less than 128
-     */
-    public static boolean isAscii(char ch) {
-        return ch < 128;
-    }
-    
-    /**
-     * <p>Checks whether the character is ASCII 7 bit printable.</p>
-     *
-     * <pre>
-     *   CharUtils.isAsciiPrintable('a')  = true
-     *   CharUtils.isAsciiPrintable('A')  = true
-     *   CharUtils.isAsciiPrintable('3')  = true
-     *   CharUtils.isAsciiPrintable('-')  = true
-     *   CharUtils.isAsciiPrintable('\n') = false
-     *   CharUtils.isAsciiPrintable('&copy;') = false
-     * </pre>
-     * 
-     * @param ch  the character to check
-     * @return true if between 32 and 126 inclusive
-     */
-    public static boolean isAsciiPrintable(char ch) {
-        return ch >= 32 && ch < 127;
-    }
-    
-    /**
-     * <p>Checks whether the character is ASCII 7 bit control.</p>
-     *
-     * <pre>
-     *   CharUtils.isAsciiControl('a')  = false
-     *   CharUtils.isAsciiControl('A')  = false
-     *   CharUtils.isAsciiControl('3')  = false
-     *   CharUtils.isAsciiControl('-')  = false
-     *   CharUtils.isAsciiControl('\n') = true
-     *   CharUtils.isAsciiControl('&copy;') = false
-     * </pre>
-     * 
-     * @param ch  the character to check
-     * @return true if less than 32 or equals 127
-     */
-    public static boolean isAsciiControl(char ch) {
-        return ch < 32 || ch == 127;
-    }
-    
-    /**
-     * <p>Checks whether the character is ASCII 7 bit alphabetic.</p>
-     *
-     * <pre>
-     *   CharUtils.isAsciiAlpha('a')  = true
-     *   CharUtils.isAsciiAlpha('A')  = true
-     *   CharUtils.isAsciiAlpha('3')  = false
-     *   CharUtils.isAsciiAlpha('-')  = false
-     *   CharUtils.isAsciiAlpha('\n') = false
-     *   CharUtils.isAsciiAlpha('&copy;') = false
-     * </pre>
-     * 
-     * @param ch  the character to check
-     * @return true if between 65 and 90 or 97 and 122 inclusive
-     */
-    public static boolean isAsciiAlpha(char ch) {
-        return (ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z');
-    }
-    
-    /**
-     * <p>Checks whether the character is ASCII 7 bit alphabetic upper case.</p>
-     *
-     * <pre>
-     *   CharUtils.isAsciiAlphaUpper('a')  = false
-     *   CharUtils.isAsciiAlphaUpper('A')  = true
-     *   CharUtils.isAsciiAlphaUpper('3')  = false
-     *   CharUtils.isAsciiAlphaUpper('-')  = false
-     *   CharUtils.isAsciiAlphaUpper('\n') = false
-     *   CharUtils.isAsciiAlphaUpper('&copy;') = false
-     * </pre>
-     * 
-     * @param ch  the character to check
-     * @return true if between 65 and 90 inclusive
-     */
-    public static boolean isAsciiAlphaUpper(char ch) {
-        return ch >= 'A' && ch <= 'Z';
-    }
-    
-    /**
-     * <p>Checks whether the character is ASCII 7 bit alphabetic lower case.</p>
-     *
-     * <pre>
-     *   CharUtils.isAsciiAlphaLower('a')  = true
-     *   CharUtils.isAsciiAlphaLower('A')  = false
-     *   CharUtils.isAsciiAlphaLower('3')  = false
-     *   CharUtils.isAsciiAlphaLower('-')  = false
-     *   CharUtils.isAsciiAlphaLower('\n') = false
-     *   CharUtils.isAsciiAlphaLower('&copy;') = false
-     * </pre>
-     * 
-     * @param ch  the character to check
-     * @return true if between 97 and 122 inclusive
-     */
-    public static boolean isAsciiAlphaLower(char ch) {
-        return ch >= 'a' && ch <= 'z';
-    }
-    
-    /**
-     * <p>Checks whether the character is ASCII 7 bit numeric.</p>
-     *
-     * <pre>
-     *   CharUtils.isAsciiNumeric('a')  = false
-     *   CharUtils.isAsciiNumeric('A')  = false
-     *   CharUtils.isAsciiNumeric('3')  = true
-     *   CharUtils.isAsciiNumeric('-')  = false
-     *   CharUtils.isAsciiNumeric('\n') = false
-     *   CharUtils.isAsciiNumeric('&copy;') = false
-     * </pre>
-     * 
-     * @param ch  the character to check
-     * @return true if between 48 and 57 inclusive
-     */
-    public static boolean isAsciiNumeric(char ch) {
-        return ch >= '0' && ch <= '9';
-    }
-    
-    /**
-     * <p>Checks whether the character is ASCII 7 bit numeric.</p>
-     *
-     * <pre>
-     *   CharUtils.isAsciiAlphanumeric('a')  = true
-     *   CharUtils.isAsciiAlphanumeric('A')  = true
-     *   CharUtils.isAsciiAlphanumeric('3')  = true
-     *   CharUtils.isAsciiAlphanumeric('-')  = false
-     *   CharUtils.isAsciiAlphanumeric('\n') = false
-     *   CharUtils.isAsciiAlphanumeric('&copy;') = false
-     * </pre>
-     * 
-     * @param ch  the character to check
-     * @return true if between 48 and 57 or 65 and 90 or 97 and 122 inclusive
-     */
-    public static boolean isAsciiAlphanumeric(char ch) {
-        return (ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z') || (ch >= '0' && ch <= '9');
-    }
-    
-}