Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: src/share/classes/com/sun/tools/javac/parser/Lexer.java
src/share/classes/com/sun/tools/javac/parser/Lexer.java
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| 1 /* | |
| 2 * Copyright 2005 Sun Microsystems, Inc. All Rights Reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. Sun designates this | |
| 8 * particular file as subject to the "Classpath" exception as provided | |
| 9 * by Sun in the LICENSE file that accompanied this code. | |
| 10 * | |
| 11 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 * accompanied this code). | |
| 16 * | |
| 17 * You should have received a copy of the GNU General Public License version | |
| 18 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 * | |
| 21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 22 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 23 * have any questions. | |
| 24 */ | |
| 25 | |
| 26 package com.sun.tools.javac.parser; | |
| 27 | |
| 28 import com.sun.tools.javac.util.*; | |
| 29 import com.sun.tools.javac.util.Position.LineMap; | |
| 30 | |
| 31 /** | |
| 32 * The lexical analyzer maps an input stream consisting of ASCII | |
| 33 * characters and Unicode escapes into a token sequence. | |
| 34 * | |
| 35 * <p><b>This is NOT part of any API supported by Sun Microsystems. | |
| 36 * If you write code that depends on this, you do so at your own risk. | |
| 37 * This code and its internal interfaces are subject to change or | |
| 38 * deletion without notice.</b> | |
| 39 */ | |
| 40 public interface Lexer { | |
| 41 | |
| 42 /** | |
| 43 * Has a @deprecated been encountered in last doc comment? | |
| 44 * This needs to be reset by client with resetDeprecatedFlag. | |
| 45 */ | |
| 46 boolean deprecatedFlag(); | |
| 47 | |
| 48 void resetDeprecatedFlag(); | |
| 49 | |
| 50 /** | |
| 51 * Returns the documentation string of the current token. | |
| 52 */ | |
| 53 String docComment(); | |
| 54 | |
| 55 /** | |
| 56 * Return the last character position of the current token. | |
| 57 */ | |
| 58 int endPos(); | |
| 59 | |
| 60 /** | |
| 61 * Return the position where a lexical error occurred; | |
| 62 */ | |
| 63 int errPos(); | |
| 64 | |
| 65 /** | |
| 66 * Set the position where a lexical error occurred; | |
| 67 */ | |
| 68 void errPos(int pos); | |
| 69 | |
| 70 /** | |
| 71 * Build a map for translating between line numbers and | |
| 72 * positions in the input. | |
| 73 * | |
| 74 * @return a LineMap | |
| 75 */ | |
| 76 LineMap getLineMap(); | |
| 77 | |
| 78 /** | |
| 79 * Returns a copy of the input buffer, up to its inputLength. | |
| 80 * Unicode escape sequences are not translated. | |
| 81 */ | |
| 82 char[] getRawCharacters(); | |
| 83 | |
| 84 /** | |
| 85 * Returns a copy of a character array subset of the input buffer. | |
| 86 * The returned array begins at the <code>beginIndex</code> and | |
| 87 * extends to the character at index <code>endIndex - 1</code>. | |
| 88 * Thus the length of the substring is <code>endIndex-beginIndex</code>. | |
| 89 * This behavior is like | |
| 90 * <code>String.substring(beginIndex, endIndex)</code>. | |
| 91 * Unicode escape sequences are not translated. | |
| 92 * | |
| 93 * @param beginIndex the beginning index, inclusive. | |
| 94 * @param endIndex the ending index, exclusive. | |
| 95 * @throws IndexOutOfBounds if either offset is outside of the | |
| 96 * array bounds | |
| 97 */ | |
| 98 char[] getRawCharacters(int beginIndex, int endIndex); | |
| 99 | |
| 100 /** | |
| 101 * Return the name of an identifier or token for the current token. | |
| 102 */ | |
| 103 Name name(); | |
| 104 | |
| 105 /** | |
| 106 * Read token. | |
| 107 */ | |
| 108 void nextToken(); | |
| 109 | |
| 110 /** | |
| 111 * Return the current token's position: a 0-based | |
| 112 * offset from beginning of the raw input stream | |
| 113 * (before unicode translation) | |
| 114 */ | |
| 115 int pos(); | |
| 116 | |
| 117 /** | |
| 118 * Return the last character position of the previous token. | |
| 119 */ | |
| 120 int prevEndPos(); | |
| 121 | |
| 122 /** | |
| 123 * Return the radix of a numeric literal token. | |
| 124 */ | |
| 125 int radix(); | |
| 126 | |
| 127 /** | |
| 128 * The value of a literal token, recorded as a string. | |
| 129 * For integers, leading 0x and 'l' suffixes are suppressed. | |
| 130 */ | |
| 131 String stringVal(); | |
| 132 | |
| 133 /** | |
| 134 * Return the current token, set by nextToken(). | |
| 135 */ | |
| 136 Token token(); | |
| 137 | |
| 138 /** | |
| 139 * Sets the current token. | |
| 140 */ | |
| 141 void token(Token token); | |
| 142 } |
