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JDK 1.1 Source Code Directory
JDK 1.1 source code directory contains Java source code for JDK 1.1 core classes:
"C:\fyicenter\jdk-1.1.8\src".
Here is the list of Java classes of the JDK 1.1 source code:
✍: FYIcenter
⏎ java/io/StreamTokenizer.java
/* * @(#)StreamTokenizer.java 1.22 01/12/10 * * Copyright 2002 Sun Microsystems, Inc. All rights reserved. * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */ package java.io; /** * The <code>StreamTokenizer</code> class takes an input stream and * parses it into "tokens", allowing the tokens to be * read one at a time. The parsing process is controlled by a table * and a number of flags that can be set to various states. The * stream tokenizer can recognize identifiers, numbers, quoted * strings, and various comment styles. * <p> * Each byte read from the input stream is regarded as a character * in the range <code>'\u0000'</code> through <code>'\u00FF'</code>. * The character value is used to look up five possible attributes of * the character: <i>white space</i>, <i>alphabetic</i>, * <i>numeric</i>, <i>string quote</i>, and <i>comment character</i>. * Each character can have zero or more of these attributes. * <p> * In addition, an instance has four flags. These flags indicate: * <ul> * <li>Whether line terminators are to be returned as tokens or treated * as white space that merely separates tokens. * <li>Whether C-style comments are to be recognized and skipped. * <li>Whether C++-style comments are to be recognized and skipped. * <li>Whether the characters of identifiers are converted to lowercase. * </ul> * <p> * A typical application first constructs an instance of this class, * sets up the syntax tables, and then repeatedly loops calling the * <code>nextToken</code> method in each iteration of the loop until * it returns the value <code>TT_EOF</code>. * * @author James Gosling * @version 1.22, 12/10/01 * @see java.io.StreamTokenizer#nextToken() * @see java.io.StreamTokenizer#TT_EOF * @since JDK1.0 */ public class StreamTokenizer { /* Only one of these will be non-null */ private Reader reader = null; private InputStream input = null; private char buf[] = new char[20]; private int peekc; private boolean pushedBack; private boolean forceLower; /** The line number of the last token read */ private int LINENO = 1; private boolean eolIsSignificantP = false; private boolean slashSlashCommentsP = false; private boolean slashStarCommentsP = false; private byte ctype[] = new byte[256]; private static final byte CT_WHITESPACE = 1; private static final byte CT_DIGIT = 2; private static final byte CT_ALPHA = 4; private static final byte CT_QUOTE = 8; private static final byte CT_COMMENT = 16; /** * After a call to the <code>nextToken</code> method, this field * contains the type of the token just read. For a single character * token, its value is the single character, converted to an integer. * For a quoted string token (see , its value is the quote character. * Otherwise, its value is one of the following: * <ul> * <li><code>TT_WORD</code> indicates that the token is a word. * <li><code>TT_NUMBER</code> indicates that the token is a number. * <li><code>TT_EOL</code> indicates that the end of line has been read. * The field can only have this value if the * <code>eolIsSignificant</code> method has been called with the * argument <code>true</code>. * <li><code>TT_EOF</code> indicates that the end of the input stream * has been reached. * </ul> * * @see java.io.StreamTokenizer#eolIsSignificant(boolean) * @see java.io.StreamTokenizer#nextToken() * @see java.io.StreamTokenizer#quoteChar(int) * @see java.io.StreamTokenizer#TT_EOF * @see java.io.StreamTokenizer#TT_EOL * @see java.io.StreamTokenizer#TT_NUMBER * @see java.io.StreamTokenizer#TT_WORD */ public int ttype = TT_NOTHING; /** * A constant indicating that the end of the stream has been read. */ public static final int TT_EOF = -1; /** * A constant indicating that the end of the line has been read. */ public static final int TT_EOL = '\n'; /** * A constant indicating that a number token has been read. */ public static final int TT_NUMBER = -2; /** * A constant indicating that a word token has been read. */ public static final int TT_WORD = -3; /* A constant indicating that no token has been read, used for * initializing ttype. FIXME This could be made public and * made available as the part of the API in a future release. */ private static final int TT_NOTHING = -4; /** * If the current token is a word token, this field contains a * string giving the characters of the word token. When the current * token is a quoted string token, this field contains the body of * the string. * <p> * The current token is a word when the value of the * <code>ttype</code> field is <code>TT_WORD</code>. The current token is * a quoted string token when the value of the <code>ttype</code> field is * a quote character. * * @see java.io.StreamTokenizer#quoteChar(int) * @see java.io.StreamTokenizer#TT_WORD * @see java.io.StreamTokenizer#ttype * @since JDK1.0 */ public String sval; /** * If the current token is a number, this field contains the value * of that number. The current token is a number when the value of * the <code>ttype</code> field is <code>TT_NUMBER</code>. * * @see java.io.StreamTokenizer#TT_NUMBER * @see java.io.StreamTokenizer#ttype */ public double nval; /** Private constructor that initializes everything except the streams. */ private StreamTokenizer() { wordChars('a', 'z'); wordChars('A', 'Z'); wordChars(128 + 32, 255); whitespaceChars(0, ' '); commentChar('/'); quoteChar('"'); quoteChar('\''); parseNumbers(); } /** * Creates a stream tokenizer that parses the specified input * stream. The stream tokenizer is initialized to the following * default state: * <ul> * <li>All byte values <code>'A'</code> through <code>'Z'</code>, * <code>'a'</code> through <code>'z'</code>, and * <code>'\u00A0'</code> through <code>'\u00FF'</code> are * considered to be alphabetic. * <li>All byte values <code>'\u0000'</code> through * <code>'\u0020'</code> are considered to be white space. * <li><code>'/'</code> is a comment character. * <li>Single quote <code>'\''</code> and double quote <code>'"'</code> * are string quote characters. * <li>Numbers are parsed. * <li>Ends of lines are treated as white space, not as separate tokens. * <li>C-style and C++-style comments are not recognized. * </ul> * * @deprecated As of JDK version 1.1, the preferred way to tokenize an * input stream is to convert it into a character stream, for example: * <p> * <pre> * Reader r = new BufferedReader(new InputStreamReader(is)); * StreamTokenizer st = new StreamTokenizer(r); * </pre> * * @param is an input stream. * @see java.io.BufferedReader * @see java.io.InputStreamReader * @see java.io.StreamTokenizer#StreamTokenizer(java.io.Reader) */ public StreamTokenizer(InputStream is) { this(); input = is; } /** * Create a tokenizer that parses the given character stream. * @since JDK1.1 */ public StreamTokenizer(Reader r) { this(); reader = r; } /** * Resets this tokenizer's syntax table so that all characters are * "ordinary." See the <code>ordinaryChar</code> method * for more information on a character being ordinary. * * @see java.io.StreamTokenizer#ordinaryChar(int) */ public void resetSyntax() { for (int i = ctype.length; --i >= 0;) ctype[i] = 0; } /** * Specifies that all characters <i>c</i> in the range * <code>low <= <i>c</i> <= high</code> * are word constituents. A word token consists of a word constituent * followed by zero or more word constituents or number constituents. * * @param low the low end of the range. * @param hi the high end of the range. */ public void wordChars(int low, int hi) { if (low < 0) low = 0; if (hi >= ctype.length) hi = ctype.length - 1; while (low <= hi) ctype[low++] |= CT_ALPHA; } /** * Specifies that all characters <i>c</i> in the range * <code>low <= <i>c</i> <= high</code> * are white space characters. White space characters serve only to * separate tokens in the input stream. * * @param low the low end of the range. * @param hi the high end of the range. */ public void whitespaceChars(int low, int hi) { if (low < 0) low = 0; if (hi >= ctype.length) hi = ctype.length - 1; while (low <= hi) ctype[low++] = CT_WHITESPACE; } /** * Specifies that all characters <i>c</i> in the range * <code>low <= <i>c</i> <= high</code> * are "ordinary" in this tokenizer. See the * <code>ordinaryChar</code> method for more information on a * character being ordinary. * * @param low the low end of the range. * @param hi the high end of the range. * @see java.io.StreamTokenizer#ordinaryChar(int) */ public void ordinaryChars(int low, int hi) { if (low < 0) low = 0; if (hi >= ctype.length) hi = ctype.length - 1; while (low <= hi) ctype[low++] = 0; } /** * Specifies that the character argument is "ordinary" * in this tokenizer. It removes any special significance the * character has as a comment character, word component, string * delimiter, white space, or number character. When such a character * is encountered by the parser, the parser treates it as a * single-character token and sets <code>ttype</code> field to the * character value. * * @param ch the character. * @see java.io.StreamTokenizer#ttype */ public void ordinaryChar(int ch) { if (ch >= 0 && ch < ctype.length) ctype[ch] = 0; } /** * Specified that the character argument starts a single-line * comment. All characters from the comment character to the end of * the line are ignored by this stream tokenizer. * * @param ch the character. */ public void commentChar(int ch) { if (ch >= 0 && ch < ctype.length) ctype[ch] = CT_COMMENT; } /** * Specifies that matching pairs of this character delimit string * constants in this tokenizer. * <p> * When the <code>nextToken</code> method encounters a string * constant, the <code>ttype</code> field is set to the string * delimiter and the <code>sval</code> field is set to the body of * the string. * <p> * If a string quote character is encountered, then a string is * recognized, consisting of all characters after (but not including) * the string quote character, up to (but not including) the next * occurrence of that same string quote character, or a line * terminator, or end of file. The usual escape sequences such as * <code>"\n"</code> and <code>"\t"</code> are recognized and * converted to single characters as the string is parsed. * * @param ch the character. * @see java.io.StreamTokenizer#nextToken() * @see java.io.StreamTokenizer#sval * @see java.io.StreamTokenizer#ttype */ public void quoteChar(int ch) { if (ch >= 0 && ch < ctype.length) ctype[ch] = CT_QUOTE; } /** * Specifies that numbers should be parsed by this tokenizer. The * syntax table of this tokenizer is modified so that each of the twelve * characters: * <ul><code> * 0 1 2 3 4 5 6 7 8 9 . - * </code></ul> * <p> * has the "numeric" attribute. * <p> * When the parser encounters a word token that has the format of a * double precision floating-point number, it treats the token as a * number rather than a word, by setting the the <code>ttype</code> * field to the value <code>TT_NUMBER</code> and putting the numeric * value of the token into the <code>nval</code> field. * * @see java.io.StreamTokenizer#nval * @see java.io.StreamTokenizer#TT_NUMBER * @see java.io.StreamTokenizer#ttype */ public void parseNumbers() { for (int i = '0'; i <= '9'; i++) ctype[i] |= CT_DIGIT; ctype['.'] |= CT_DIGIT; ctype['-'] |= CT_DIGIT; } /** * Determines whether or not ends of line are treated as tokens. * If the flag argument is true, this tokenizer treats end of lines * as tokens; the <code>nextToken</code> method returns * <code>TT_EOL</code> and also sets the <code>ttype</code> field to * this value when an end of line is read. * <p> * A line is a sequence of characters ending with either a * carriage-return character (<code>'\r'</code>) or a newline * character (<code>'\n'</code>). In addition, a carriage-return * character followed immediately by a newline character is treated * as a single end-of-line token. * <p> * If the <code>flag</code> is false, end-of-line characters are * treated as white space and serve only to separate tokens. * * @param flag <code>true</code> indicates that end-of-line characters * are separate tokens; <code>false</code> indicates that * end-of-line characters are white space. * @see java.io.StreamTokenizer#nextToken() * @see java.io.StreamTokenizer#ttype * @see java.io.StreamTokenizer#TT_EOL */ public void eolIsSignificant(boolean flag) { eolIsSignificantP = flag; } /** * Determines whether or not the tokenizer recognizes C-style comments. * If the flag argument is <code>true</code>, this stream tokenizer * recognizes C-style comments. All text between successive * occurrences of <code>/*</code> and <code>*/</code> are discarded. * <p> * If the flag argument is <code>false</code>, then C-style comments * are not treated specially. * * @param flag <code>true</code> indicates to recognize and ignore * C-style comments. */ public void slashStarComments(boolean flag) { slashStarCommentsP = flag; } /** * Determines whether or not the tokenizer recognizes C++-style comments. * If the flag argument is <code>true</code>, this stream tokenizer * recognizes C++-style comments. Any occurrence of two consecutive * slash characters (<code>'/'</code>) is treated as the beginning of * a comment that extends to the end of the line. * <p> * If the flag argument is <code>false</code>, then C++-style * comments are not treated specially. * * @param flag <code>true</code> indicates to recognize and ignore * C++-style comments. */ public void slashSlashComments(boolean flag) { slashSlashCommentsP = flag; } /** * Determines whether or not word token are automatically lowercased. * If the flag argument is <code>true</code>, then the value in the * <code>sval</code> field is lowercased whenever a word token is * returned (the <code>ttype</code> field has the * value <code>TT_WORD</code> by the <code>nextToken</code> method * of this tokenizer. * <p> * If the flag argument is <code>false</code>, then the * <code>sval</code> field is not modified. * * @param fl <code>true</code> indicates that all word tokens should * be lowercased. * @see java.io.StreamTokenizer#nextToken() * @see java.io.StreamTokenizer#ttype * @see java.io.StreamTokenizer#TT_WORD */ public void lowerCaseMode(boolean fl) { forceLower = fl; } /** Read the next character */ private int read() throws IOException { if (reader != null) return reader.read(); else if (input != null) return input.read(); else throw new IllegalStateException(); } /** * Parses the next token from the input stream of this tokenizer. * The type of the next token is returned in the <code>ttype</code> * field. Additional information about the token may be in the * <code>nval</code> field or the <code>sval</code> field of this * tokenizer. * <p> * Typical clients of this * class first set up the syntax tables and then sit in a loop * calling nextToken to parse successive tokens until TT_EOF * is returned. * * @return the value of the <code>ttype</code> field. * @exception IOException if an I/O error occurs. * @see java.io.StreamTokenizer#nval * @see java.io.StreamTokenizer#sval * @see java.io.StreamTokenizer#ttype */ public int nextToken() throws IOException { if (pushedBack) { pushedBack = false; return ttype; } byte ct[] = ctype; int c; sval = null; if (ttype == TT_NOTHING) { c = read(); if (c >= 0) // ttype is surely overwritten below to its correct value. ttype = c; // for now we just make sure it isn't TT_NOTHING } else { c = peekc; } if (c < 0) return ttype = TT_EOF; int ctype = c < 256 ? ct[c] : CT_ALPHA; while ((ctype & CT_WHITESPACE) != 0) { if (c == '\r') { LINENO++; c = read(); if (c == '\n') c = read(); if (eolIsSignificantP) { peekc = c; return ttype = TT_EOL; } } else { if (c == '\n') { LINENO++; if (eolIsSignificantP) { peekc = read(); return ttype = TT_EOL; } } c = read(); } if (c < 0) return ttype = TT_EOF; ctype = c < 256 ? ct[c] : CT_ALPHA; } if ((ctype & CT_DIGIT) != 0) { boolean neg = false; if (c == '-') { c = read(); if (c != '.' && (c < '0' || c > '9')) { peekc = c; return ttype = '-'; } neg = true; } double v = 0; int decexp = 0; int seendot = 0; while (true) { if (c == '.' && seendot == 0) seendot = 1; else if ('0' <= c && c <= '9') { v = v * 10 + (c - '0'); decexp += seendot; } else break; c = read(); } peekc = c; if (decexp != 0) { double denom = 10; decexp--; while (decexp > 0) { denom *= 10; decexp--; } /* do one division of a likely-to-be-more-accurate number */ v = v / denom; } nval = neg ? -v : v; return ttype = TT_NUMBER; } if ((ctype & CT_ALPHA) != 0) { int i = 0; do { if (i >= buf.length) { char nb[] = new char[buf.length * 2]; System.arraycopy(buf, 0, nb, 0, buf.length); buf = nb; } buf[i++] = (char) c; c = read(); ctype = c < 0 ? CT_WHITESPACE : c < 256 ? ct[c] : CT_ALPHA; } while ((ctype & (CT_ALPHA | CT_DIGIT)) != 0); peekc = c; sval = String.copyValueOf(buf, 0, i); if (forceLower) sval = sval.toLowerCase(); return ttype = TT_WORD; } if ((ctype & CT_COMMENT) != 0) { while ((c = read()) != '\n' && c != '\r' && c >= 0); peekc = c; return nextToken(); } if ((ctype & CT_QUOTE) != 0) { ttype = c; int i = 0; // invariants (because \Octal needs a lookahead): // (i) c contains char value // (ii) peekc contains the lookahead peekc = read(); while (peekc >= 0 && peekc != ttype && peekc != '\n' && peekc != '\r') { if (peekc == '\\') { c = read(); int first = c; // to allow \377, but not \477 if (c >= '0' && c <= '7') { c = c - '0'; int c2 = read(); if ('0' <= c2 && c2 <= '7') { c = (c << 3) + (c2 - '0'); c2 = read(); if ('0' <= c2 && c2 <= '7' && first <= '3') { c = (c << 3) + (c2 - '0'); peekc = read(); } else peekc = c2; } else peekc = c2; } else { switch (c) { case 'a': c = 0x7; break; case 'b': c = '\b'; break; case 'f': c = 0xC; break; case 'n': c = '\n'; break; case 'r': c = '\r'; break; case 't': c = '\t'; break; case 'v': c = 0xB; break; } peekc = read(); } } else { c = peekc; peekc = read(); } if (i >= buf.length) { char nb[] = new char[buf.length * 2]; System.arraycopy(buf, 0, nb, 0, buf.length); buf = nb; } buf[i++] = (char) c; } if (peekc == ttype) // keep \n or \r intact in peekc peekc = read(); sval = String.copyValueOf(buf, 0, i); return ttype; } if (c == '/' && (slashSlashCommentsP || slashStarCommentsP)) { c = read(); if (c == '*' && slashStarCommentsP) { int prevc = 0; while ((c = read()) != '/' || prevc != '*') { if (c == '\r') { LINENO++; c = read(); if (c == '\n') { c = read(); } } else { if (c == '\n') { LINENO++; c = read(); } } if (c < 0) return ttype = TT_EOF; prevc = c; } peekc = read(); return nextToken(); } else if (c == '/' && slashSlashCommentsP) { while ((c = read()) != '\n' && c != '\r' && c >= 0); peekc = c; return nextToken(); } else { peekc = c; return ttype = '/'; } } peekc = read(); return ttype = c; } /** * Causes the next call to the <code>nextToken</code> method of this * tokenizer to return the current value in the <code>ttype</code> * field, and not to modify the value in the <code>nval</code> or * <code>sval</code> field. * * @see java.io.StreamTokenizer#nextToken() * @see java.io.StreamTokenizer#nval * @see java.io.StreamTokenizer#sval * @see java.io.StreamTokenizer#ttype */ public void pushBack() { if (ttype != TT_NOTHING) // no-op if nextToken() not called pushedBack = true; } /** * Return the current line number. * * @return the current line number of this stream tokenizer. */ public int lineno() { return LINENO; } /** * Returns the string representation of the current stream token. * * @return a string representation of the token specified by the * <code>ttype</code>, <code>nval</code>, and <code>sval</code> * fields. * @see java.io.StreamTokenizer#nval * @see java.io.StreamTokenizer#sval * @see java.io.StreamTokenizer#ttype */ public String toString() { String ret; switch (ttype) { case TT_EOF: ret = "EOF"; break; case TT_EOL: ret = "EOL"; break; case TT_WORD: ret = sval; break; case TT_NUMBER: ret = "n=" + nval; break; case TT_NOTHING: ret = "NOTHING"; break; default:{ char s[] = new char[3]; s[0] = s[2] = '\''; s[1] = (char) ttype; ret = new String(s); break; } } return "Token[" + ret + "], line " + LINENO; } }
⏎ java/io/StreamTokenizer.java
Or download all of them as a single archive file:
File name: jdk-1.1.8-src.zip File size: 1574187 bytes Release date: 2018-11-16 Download
⇒ Backup JDK 1.1 Installation Directory
2018-11-17, 176106👍, 0💬
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