Thu, 10 Jun 2010 09:29:23 +0100
6945418: Project Coin: Simplified Varargs Method Invocation
Summary: Add new mandatory warning for unsafe vararg method declaration. Warning can be suppressed as usual (@SuppressWarnings("varargs")/-Xlint:-varargs)
Reviewed-by: jjg, darcy
duke@1 | 1 | /* |
ohair@554 | 2 | * Copyright (c) 1999, 2008, Oracle and/or its affiliates. All rights reserved. |
duke@1 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@1 | 4 | * |
duke@1 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@1 | 6 | * under the terms of the GNU General Public License version 2 only, as |
ohair@554 | 7 | * published by the Free Software Foundation. Oracle designates this |
duke@1 | 8 | * particular file as subject to the "Classpath" exception as provided |
ohair@554 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
duke@1 | 10 | * |
duke@1 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@1 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@1 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@1 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@1 | 15 | * accompanied this code). |
duke@1 | 16 | * |
duke@1 | 17 | * You should have received a copy of the GNU General Public License version |
duke@1 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@1 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@1 | 20 | * |
ohair@554 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
ohair@554 | 22 | * or visit www.oracle.com if you need additional information or have any |
ohair@554 | 23 | * questions. |
duke@1 | 24 | */ |
duke@1 | 25 | |
duke@1 | 26 | package com.sun.tools.javac.util; |
duke@1 | 27 | |
duke@1 | 28 | /** Utility class for static conversion methods between numbers |
duke@1 | 29 | * and strings in various formats. |
duke@1 | 30 | * |
duke@1 | 31 | * <p><b>This is NOT part of any API supported by Sun Microsystems. If |
duke@1 | 32 | * you write code that depends on this, you do so at your own risk. |
duke@1 | 33 | * This code and its internal interfaces are subject to change or |
duke@1 | 34 | * deletion without notice.</b> |
duke@1 | 35 | */ |
duke@1 | 36 | public class Convert { |
duke@1 | 37 | |
duke@1 | 38 | /** Convert string to integer. |
duke@1 | 39 | */ |
duke@1 | 40 | public static int string2int(String s, int radix) |
duke@1 | 41 | throws NumberFormatException { |
duke@1 | 42 | if (radix == 10) { |
duke@1 | 43 | return Integer.parseInt(s, radix); |
duke@1 | 44 | } else { |
duke@1 | 45 | char[] cs = s.toCharArray(); |
duke@1 | 46 | int limit = Integer.MAX_VALUE / (radix/2); |
duke@1 | 47 | int n = 0; |
duke@1 | 48 | for (int i = 0; i < cs.length; i++) { |
duke@1 | 49 | int d = Character.digit(cs[i], radix); |
duke@1 | 50 | if (n < 0 || |
duke@1 | 51 | n > limit || |
duke@1 | 52 | n * radix > Integer.MAX_VALUE - d) |
duke@1 | 53 | throw new NumberFormatException(); |
duke@1 | 54 | n = n * radix + d; |
duke@1 | 55 | } |
duke@1 | 56 | return n; |
duke@1 | 57 | } |
duke@1 | 58 | } |
duke@1 | 59 | |
duke@1 | 60 | /** Convert string to long integer. |
duke@1 | 61 | */ |
duke@1 | 62 | public static long string2long(String s, int radix) |
duke@1 | 63 | throws NumberFormatException { |
duke@1 | 64 | if (radix == 10) { |
duke@1 | 65 | return Long.parseLong(s, radix); |
duke@1 | 66 | } else { |
duke@1 | 67 | char[] cs = s.toCharArray(); |
duke@1 | 68 | long limit = Long.MAX_VALUE / (radix/2); |
duke@1 | 69 | long n = 0; |
duke@1 | 70 | for (int i = 0; i < cs.length; i++) { |
duke@1 | 71 | int d = Character.digit(cs[i], radix); |
duke@1 | 72 | if (n < 0 || |
duke@1 | 73 | n > limit || |
duke@1 | 74 | n * radix > Long.MAX_VALUE - d) |
duke@1 | 75 | throw new NumberFormatException(); |
duke@1 | 76 | n = n * radix + d; |
duke@1 | 77 | } |
duke@1 | 78 | return n; |
duke@1 | 79 | } |
duke@1 | 80 | } |
duke@1 | 81 | |
duke@1 | 82 | /* Conversion routines between names, strings, and byte arrays in Utf8 format |
duke@1 | 83 | */ |
duke@1 | 84 | |
duke@1 | 85 | /** Convert `len' bytes from utf8 to characters. |
duke@1 | 86 | * Parameters are as in System.arraycopy |
duke@1 | 87 | * Return first index in `dst' past the last copied char. |
duke@1 | 88 | * @param src The array holding the bytes to convert. |
duke@1 | 89 | * @param sindex The start index from which bytes are converted. |
duke@1 | 90 | * @param dst The array holding the converted characters.. |
duke@1 | 91 | * @param dindex The start index from which converted characters |
duke@1 | 92 | * are written. |
duke@1 | 93 | * @param len The maximum number of bytes to convert. |
duke@1 | 94 | */ |
duke@1 | 95 | public static int utf2chars(byte[] src, int sindex, |
duke@1 | 96 | char[] dst, int dindex, |
duke@1 | 97 | int len) { |
duke@1 | 98 | int i = sindex; |
duke@1 | 99 | int j = dindex; |
duke@1 | 100 | int limit = sindex + len; |
duke@1 | 101 | while (i < limit) { |
duke@1 | 102 | int b = src[i++] & 0xFF; |
duke@1 | 103 | if (b >= 0xE0) { |
duke@1 | 104 | b = (b & 0x0F) << 12; |
duke@1 | 105 | b = b | (src[i++] & 0x3F) << 6; |
duke@1 | 106 | b = b | (src[i++] & 0x3F); |
duke@1 | 107 | } else if (b >= 0xC0) { |
duke@1 | 108 | b = (b & 0x1F) << 6; |
duke@1 | 109 | b = b | (src[i++] & 0x3F); |
duke@1 | 110 | } |
duke@1 | 111 | dst[j++] = (char)b; |
duke@1 | 112 | } |
duke@1 | 113 | return j; |
duke@1 | 114 | } |
duke@1 | 115 | |
duke@1 | 116 | /** Return bytes in Utf8 representation as an array of characters. |
duke@1 | 117 | * @param src The array holding the bytes. |
duke@1 | 118 | * @param sindex The start index from which bytes are converted. |
duke@1 | 119 | * @param len The maximum number of bytes to convert. |
duke@1 | 120 | */ |
duke@1 | 121 | public static char[] utf2chars(byte[] src, int sindex, int len) { |
duke@1 | 122 | char[] dst = new char[len]; |
duke@1 | 123 | int len1 = utf2chars(src, sindex, dst, 0, len); |
duke@1 | 124 | char[] result = new char[len1]; |
duke@1 | 125 | System.arraycopy(dst, 0, result, 0, len1); |
duke@1 | 126 | return result; |
duke@1 | 127 | } |
duke@1 | 128 | |
duke@1 | 129 | /** Return all bytes of a given array in Utf8 representation |
duke@1 | 130 | * as an array of characters. |
duke@1 | 131 | * @param src The array holding the bytes. |
duke@1 | 132 | */ |
duke@1 | 133 | public static char[] utf2chars(byte[] src) { |
duke@1 | 134 | return utf2chars(src, 0, src.length); |
duke@1 | 135 | } |
duke@1 | 136 | |
duke@1 | 137 | /** Return bytes in Utf8 representation as a string. |
duke@1 | 138 | * @param src The array holding the bytes. |
duke@1 | 139 | * @param sindex The start index from which bytes are converted. |
duke@1 | 140 | * @param len The maximum number of bytes to convert. |
duke@1 | 141 | */ |
duke@1 | 142 | public static String utf2string(byte[] src, int sindex, int len) { |
duke@1 | 143 | char dst[] = new char[len]; |
duke@1 | 144 | int len1 = utf2chars(src, sindex, dst, 0, len); |
duke@1 | 145 | return new String(dst, 0, len1); |
duke@1 | 146 | } |
duke@1 | 147 | |
duke@1 | 148 | /** Return all bytes of a given array in Utf8 representation |
duke@1 | 149 | * as a string. |
duke@1 | 150 | * @param src The array holding the bytes. |
duke@1 | 151 | */ |
duke@1 | 152 | public static String utf2string(byte[] src) { |
duke@1 | 153 | return utf2string(src, 0, src.length); |
duke@1 | 154 | } |
duke@1 | 155 | |
duke@1 | 156 | /** Copy characters in source array to bytes in target array, |
duke@1 | 157 | * converting them to Utf8 representation. |
duke@1 | 158 | * The target array must be large enough to hold the result. |
duke@1 | 159 | * returns first index in `dst' past the last copied byte. |
duke@1 | 160 | * @param src The array holding the characters to convert. |
duke@1 | 161 | * @param sindex The start index from which characters are converted. |
duke@1 | 162 | * @param dst The array holding the converted characters.. |
duke@1 | 163 | * @param dindex The start index from which converted bytes |
duke@1 | 164 | * are written. |
duke@1 | 165 | * @param len The maximum number of characters to convert. |
duke@1 | 166 | */ |
duke@1 | 167 | public static int chars2utf(char[] src, int sindex, |
duke@1 | 168 | byte[] dst, int dindex, |
duke@1 | 169 | int len) { |
duke@1 | 170 | int j = dindex; |
duke@1 | 171 | int limit = sindex + len; |
duke@1 | 172 | for (int i = sindex; i < limit; i++) { |
duke@1 | 173 | char ch = src[i]; |
duke@1 | 174 | if (1 <= ch && ch <= 0x7F) { |
duke@1 | 175 | dst[j++] = (byte)ch; |
duke@1 | 176 | } else if (ch <= 0x7FF) { |
duke@1 | 177 | dst[j++] = (byte)(0xC0 | (ch >> 6)); |
duke@1 | 178 | dst[j++] = (byte)(0x80 | (ch & 0x3F)); |
duke@1 | 179 | } else { |
duke@1 | 180 | dst[j++] = (byte)(0xE0 | (ch >> 12)); |
duke@1 | 181 | dst[j++] = (byte)(0x80 | ((ch >> 6) & 0x3F)); |
duke@1 | 182 | dst[j++] = (byte)(0x80 | (ch & 0x3F)); |
duke@1 | 183 | } |
duke@1 | 184 | } |
duke@1 | 185 | return j; |
duke@1 | 186 | } |
duke@1 | 187 | |
duke@1 | 188 | /** Return characters as an array of bytes in Utf8 representation. |
duke@1 | 189 | * @param src The array holding the characters. |
duke@1 | 190 | * @param sindex The start index from which characters are converted. |
duke@1 | 191 | * @param len The maximum number of characters to convert. |
duke@1 | 192 | */ |
duke@1 | 193 | public static byte[] chars2utf(char[] src, int sindex, int len) { |
duke@1 | 194 | byte[] dst = new byte[len * 3]; |
duke@1 | 195 | int len1 = chars2utf(src, sindex, dst, 0, len); |
duke@1 | 196 | byte[] result = new byte[len1]; |
duke@1 | 197 | System.arraycopy(dst, 0, result, 0, len1); |
duke@1 | 198 | return result; |
duke@1 | 199 | } |
duke@1 | 200 | |
duke@1 | 201 | /** Return all characters in given array as an array of bytes |
duke@1 | 202 | * in Utf8 representation. |
duke@1 | 203 | * @param src The array holding the characters. |
duke@1 | 204 | */ |
duke@1 | 205 | public static byte[] chars2utf(char[] src) { |
duke@1 | 206 | return chars2utf(src, 0, src.length); |
duke@1 | 207 | } |
duke@1 | 208 | |
duke@1 | 209 | /** Return string as an array of bytes in in Utf8 representation. |
duke@1 | 210 | */ |
duke@1 | 211 | public static byte[] string2utf(String s) { |
duke@1 | 212 | return chars2utf(s.toCharArray()); |
duke@1 | 213 | } |
duke@1 | 214 | |
duke@1 | 215 | /** |
duke@1 | 216 | * Escapes each character in a string that has an escape sequence or |
duke@1 | 217 | * is non-printable ASCII. Leaves non-ASCII characters alone. |
duke@1 | 218 | */ |
duke@1 | 219 | public static String quote(String s) { |
duke@1 | 220 | StringBuilder buf = new StringBuilder(); |
duke@1 | 221 | for (int i = 0; i < s.length(); i++) { |
duke@1 | 222 | buf.append(quote(s.charAt(i))); |
duke@1 | 223 | } |
duke@1 | 224 | return buf.toString(); |
duke@1 | 225 | } |
duke@1 | 226 | |
duke@1 | 227 | /** |
duke@1 | 228 | * Escapes a character if it has an escape sequence or is |
duke@1 | 229 | * non-printable ASCII. Leaves non-ASCII characters alone. |
duke@1 | 230 | */ |
duke@1 | 231 | public static String quote(char ch) { |
duke@1 | 232 | switch (ch) { |
duke@1 | 233 | case '\b': return "\\b"; |
duke@1 | 234 | case '\f': return "\\f"; |
duke@1 | 235 | case '\n': return "\\n"; |
duke@1 | 236 | case '\r': return "\\r"; |
duke@1 | 237 | case '\t': return "\\t"; |
duke@1 | 238 | case '\'': return "\\'"; |
duke@1 | 239 | case '\"': return "\\\""; |
duke@1 | 240 | case '\\': return "\\\\"; |
duke@1 | 241 | default: |
darcy@414 | 242 | return (isPrintableAscii(ch)) |
duke@1 | 243 | ? String.valueOf(ch) |
darcy@414 | 244 | : String.format("\\u%04x", (int) ch); |
duke@1 | 245 | } |
duke@1 | 246 | } |
duke@1 | 247 | |
duke@1 | 248 | /** |
duke@1 | 249 | * Is a character printable ASCII? |
duke@1 | 250 | */ |
duke@1 | 251 | private static boolean isPrintableAscii(char ch) { |
duke@1 | 252 | return ch >= ' ' && ch <= '~'; |
duke@1 | 253 | } |
duke@1 | 254 | |
duke@1 | 255 | /** Escape all unicode characters in string. |
duke@1 | 256 | */ |
duke@1 | 257 | public static String escapeUnicode(String s) { |
duke@1 | 258 | int len = s.length(); |
duke@1 | 259 | int i = 0; |
duke@1 | 260 | while (i < len) { |
duke@1 | 261 | char ch = s.charAt(i); |
duke@1 | 262 | if (ch > 255) { |
duke@1 | 263 | StringBuffer buf = new StringBuffer(); |
duke@1 | 264 | buf.append(s.substring(0, i)); |
duke@1 | 265 | while (i < len) { |
duke@1 | 266 | ch = s.charAt(i); |
duke@1 | 267 | if (ch > 255) { |
duke@1 | 268 | buf.append("\\u"); |
duke@1 | 269 | buf.append(Character.forDigit((ch >> 12) % 16, 16)); |
duke@1 | 270 | buf.append(Character.forDigit((ch >> 8) % 16, 16)); |
duke@1 | 271 | buf.append(Character.forDigit((ch >> 4) % 16, 16)); |
duke@1 | 272 | buf.append(Character.forDigit((ch ) % 16, 16)); |
duke@1 | 273 | } else { |
duke@1 | 274 | buf.append(ch); |
duke@1 | 275 | } |
duke@1 | 276 | i++; |
duke@1 | 277 | } |
duke@1 | 278 | s = buf.toString(); |
duke@1 | 279 | } else { |
duke@1 | 280 | i++; |
duke@1 | 281 | } |
duke@1 | 282 | } |
duke@1 | 283 | return s; |
duke@1 | 284 | } |
duke@1 | 285 | |
duke@1 | 286 | /* Conversion routines for qualified name splitting |
duke@1 | 287 | */ |
duke@1 | 288 | /** Return the last part of a class name. |
duke@1 | 289 | */ |
duke@1 | 290 | public static Name shortName(Name classname) { |
duke@1 | 291 | return classname.subName( |
jjg@113 | 292 | classname.lastIndexOf((byte)'.') + 1, classname.getByteLength()); |
duke@1 | 293 | } |
duke@1 | 294 | |
duke@1 | 295 | public static String shortName(String classname) { |
duke@1 | 296 | return classname.substring(classname.lastIndexOf('.') + 1); |
duke@1 | 297 | } |
duke@1 | 298 | |
duke@1 | 299 | /** Return the package name of a class name, excluding the trailing '.', |
duke@1 | 300 | * "" if not existent. |
duke@1 | 301 | */ |
duke@1 | 302 | public static Name packagePart(Name classname) { |
duke@1 | 303 | return classname.subName(0, classname.lastIndexOf((byte)'.')); |
duke@1 | 304 | } |
duke@1 | 305 | |
duke@1 | 306 | public static String packagePart(String classname) { |
duke@1 | 307 | int lastDot = classname.lastIndexOf('.'); |
duke@1 | 308 | return (lastDot < 0 ? "" : classname.substring(0, lastDot)); |
duke@1 | 309 | } |
duke@1 | 310 | |
duke@1 | 311 | public static List<Name> enclosingCandidates(Name name) { |
duke@1 | 312 | List<Name> names = List.nil(); |
duke@1 | 313 | int index; |
duke@1 | 314 | while ((index = name.lastIndexOf((byte)'$')) > 0) { |
duke@1 | 315 | name = name.subName(0, index); |
duke@1 | 316 | names = names.prepend(name); |
duke@1 | 317 | } |
duke@1 | 318 | return names; |
duke@1 | 319 | } |
duke@1 | 320 | } |