📄 minijool.java
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/* The following code was generated by JFlex 1.4.1 on 07-6-20 上午3:52 */
package edu.ustc.cs.minijool.lexer;
/**
* This class is a scanner generated by
* <a href="http://www.jflex.de/">JFlex</a> 1.4.1
* on 07-6-20 上午3:52 from the specification file
* <tt>D:/workspace/Lab2/JFlex/MiniJOOL.flex</tt>
*/
public class MiniJOOL {
/** This character denotes the end of file */
public static final int YYEOF = -1;
/** initial size of the lookahead buffer */
private static final int ZZ_BUFFERSIZE = 16384;
/** lexical states */
public static final int YYINITIAL = 0;
/**
* Translates characters to character classes
*/
private static final char [] ZZ_CMAP = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 2, 0, 2, 2, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3, 24, 1, 9, 9, 16, 25, 12, 17, 18, 6, 14, 21, 15, 23, 4,
8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 13, 27, 22, 28, 9,
9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 9, 10, 9, 9, 9,
9, 31, 46, 29, 38, 39, 11, 7, 44, 34, 7, 7, 30, 7, 35, 37,
41, 7, 42, 32, 33, 45, 36, 43, 40, 7, 7, 19, 26, 20, 9, 0
};
/**
* Translates DFA states to action switch labels.
*/
private static final int [] ZZ_ACTION = zzUnpackAction();
private static final String ZZ_ACTION_PACKED_0 =
"\1\0\2\1\1\2\1\3\1\4\1\5\1\6\1\5"+
"\1\7\1\10\1\11\1\12\1\13\1\14\1\15\1\16"+
"\1\17\1\20\1\21\1\22\2\1\1\23\1\24\13\5"+
"\1\25\2\0\1\2\1\0\1\26\1\27\1\5\1\30"+
"\1\31\1\32\1\33\1\34\1\35\1\36\1\37\1\40"+
"\1\41\1\42\4\5\1\43\12\5\1\0\1\5\1\44"+
"\1\45\4\5\1\46\1\47\10\5\1\2\2\5\1\50"+
"\1\51\1\52\1\53\1\54\5\5\1\55\2\5\1\56"+
"\1\5\1\57\1\5\1\60\2\5\1\61\1\62";
private static int [] zzUnpackAction() {
int [] result = new int[113];
int offset = 0;
offset = zzUnpackAction(ZZ_ACTION_PACKED_0, offset, result);
return result;
}
private static int zzUnpackAction(String packed, int offset, int [] result) {
int i = 0; /* index in packed string */
int j = offset; /* index in unpacked array */
int l = packed.length();
while (i < l) {
int count = packed.charAt(i++);
int value = packed.charAt(i++);
do result[j++] = value; while (--count > 0);
}
return j;
}
/**
* Translates a state to a row index in the transition table
*/
private static final int [] ZZ_ROWMAP = zzUnpackRowMap();
private static final String ZZ_ROWMAP_PACKED_0 =
"\0\0\0\57\0\136\0\57\0\215\0\274\0\353\0\u011a"+
"\0\u0149\0\57\0\u0178\0\u01a7\0\u01d6\0\57\0\57\0\57"+
"\0\57\0\57\0\u0205\0\57\0\u0234\0\u0263\0\u0292\0\u02c1"+
"\0\u02f0\0\u031f\0\u034e\0\u037d\0\u03ac\0\u03db\0\u040a\0\u0439"+
"\0\u0468\0\u0497\0\u04c6\0\u04f5\0\57\0\136\0\u0524\0\u0553"+
"\0\u0582\0\57\0\57\0\u05b1\0\57\0\57\0\57\0\57"+
"\0\57\0\57\0\57\0\57\0\u05e0\0\57\0\u060f\0\u063e"+
"\0\u066d\0\u069c\0\u06cb\0\353\0\u06fa\0\u0729\0\u0758\0\u0787"+
"\0\u07b6\0\u07e5\0\u0814\0\u0843\0\u0872\0\u08a1\0\u08d0\0\u08ff"+
"\0\57\0\57\0\u092e\0\u095d\0\u098c\0\u09bb\0\353\0\353"+
"\0\u09ea\0\u0a19\0\u0a48\0\u0a77\0\u0aa6\0\u0ad5\0\u0b04\0\u0b33"+
"\0\u0582\0\u0b62\0\u0b91\0\353\0\353\0\353\0\353\0\353"+
"\0\u0bc0\0\u0bef\0\u0c1e\0\u0c4d\0\u0c7c\0\353\0\u0cab\0\u0cda"+
"\0\353\0\u0d09\0\353\0\u0d38\0\353\0\u0d67\0\u0d96\0\353"+
"\0\353";
private static int [] zzUnpackRowMap() {
int [] result = new int[113];
int offset = 0;
offset = zzUnpackRowMap(ZZ_ROWMAP_PACKED_0, offset, result);
return result;
}
private static int zzUnpackRowMap(String packed, int offset, int [] result) {
int i = 0; /* index in packed string */
int j = offset; /* index in unpacked array */
int l = packed.length();
while (i < l) {
int high = packed.charAt(i++) << 16;
result[j++] = high | packed.charAt(i++);
}
return j;
}
/**
* The transition table of the DFA
*/
private static final int [] ZZ_TRANS = zzUnpackTrans();
private static final String ZZ_TRANS_PACKED_0 =
"\1\2\1\3\2\4\1\5\1\4\1\6\1\7\1\10"+
"\2\2\1\11\1\2\1\12\1\13\1\14\1\15\1\16"+
"\1\17\1\20\1\21\1\22\1\23\1\24\1\25\1\26"+
"\1\27\1\30\1\31\1\32\2\7\1\33\1\34\1\35"+
"\1\36\1\37\2\7\1\40\1\7\1\41\1\42\1\43"+
"\2\7\1\44\60\0\1\45\1\0\2\46\1\0\4\46"+
"\1\47\44\46\4\0\1\50\1\0\1\51\17\0\1\52"+
"\56\0\1\53\37\0\2\7\2\0\1\7\21\0\22\7"+
"\10\0\1\10\55\0\2\7\2\0\1\7\21\0\2\7"+
"\1\54\17\7\26\0\1\55\56\0\1\56\56\0\1\57"+
"\56\0\1\60\56\0\1\61\61\0\1\62\57\0\1\63"+
"\52\0\1\64\4\0\1\65\51\0\1\66\5\0\1\67"+
"\31\0\2\7\2\0\1\7\21\0\1\7\1\70\20\7"+
"\7\0\2\7\2\0\1\7\21\0\4\7\1\71\15\7"+
"\7\0\2\7\2\0\1\7\21\0\15\7\1\72\1\7"+
"\1\73\2\7\7\0\2\7\2\0\1\74\21\0\6\7"+
"\1\75\13\7\7\0\2\7\2\0\1\7\21\0\12\7"+
"\1\76\5\7\1\77\1\7\7\0\2\7\2\0\1\7"+
"\21\0\10\7\1\100\11\7\7\0\2\7\2\0\1\7"+
"\21\0\1\7\1\101\11\7\1\102\6\7\7\0\2\7"+
"\2\0\1\7\21\0\15\7\1\103\4\7\7\0\2\7"+
"\2\0\1\7\21\0\12\7\1\104\7\7\7\0\2\7"+
"\2\0\1\7\21\0\17\7\1\105\2\7\7\0\2\7"+
"\2\0\1\7\21\0\10\7\1\106\11\7\1\0\1\46"+
"\10\0\3\46\24\0\1\46\1\0\1\46\6\0\1\46"+
"\5\0\1\50\1\0\54\50\1\0\1\51\1\0\3\51"+
"\1\107\50\51\7\0\2\7\2\0\1\7\21\0\1\7"+
"\1\110\20\7\26\0\1\111\56\0\1\112\37\0\2\7"+
"\2\0\1\7\21\0\2\7\1\113\17\7\7\0\2\7"+
"\2\0\1\7\21\0\2\7\1\114\17\7\7\0\2\7"+
"\2\0\1\7\21\0\20\7\1\115\1\7\7\0\2\7"+
"\2\0\1\7\21\0\5\7\1\116\14\7\7\0\2\7"+
"\2\0\1\7\21\0\4\7\1\117\15\7\7\0\2\7"+
"\2\0\1\7\21\0\16\7\1\120\3\7\7\0\2\7"+
"\2\0\1\7\21\0\1\7\1\121\20\7\7\0\2\7"+
"\2\0\1\7\21\0\5\7\1\122\14\7\7\0\2\7"+
"\2\0\1\7\21\0\3\7\1\123\16\7\7\0\2\7"+
"\2\0\1\7\21\0\4\7\1\124\15\7\7\0\2\7"+
"\2\0\1\7\21\0\5\7\1\125\14\7\7\0\2\7"+
"\2\0\1\7\21\0\4\7\1\126\15\7\7\0\2\7"+
"\2\0\1\7\21\0\5\7\1\127\14\7\7\0\2\7"+
"\2\0\1\7\21\0\10\7\1\130\11\7\1\0\1\51"+
"\1\0\1\51\1\131\1\51\1\107\50\51\7\0\2\7"+
"\2\0\1\7\21\0\3\7\1\115\16\7\7\0\2\7"+
"\2\0\1\7\21\0\3\7\1\132\16\7\7\0\2\7"+
"\2\0\1\7\21\0\4\7\1\133\15\7\7\0\2\7"+
"\2\0\1\7\21\0\12\7\1\134\7\7\7\0\2\7"+
"\2\0\1\7\21\0\3\7\1\135\16\7\7\0\2\7"+
"\2\0\1\7\21\0\1\7\1\136\20\7\7\0\2\7"+
"\2\0\1\7\21\0\11\7\1\137\10\7\7\0\2\7"+
"\2\0\1\7\21\0\12\7\1\140\7\7\7\0\2\7"+
"\2\0\1\7\21\0\12\7\1\141\7\7\7\0\2\7"+
"\2\0\1\7\21\0\6\7\1\142\13\7\7\0\2\7"+
"\2\0\1\7\21\0\20\7\1\143\1\7\7\0\2\7"+
"\2\0\1\7\21\0\1\7\1\144\20\7\7\0\2\7"+
"\2\0\1\7\21\0\1\7\1\145\20\7\7\0\2\7"+
"\2\0\1\7\21\0\3\7\1\146\16\7\7\0\2\7"+
"\2\0\1\7\21\0\5\7\1\147\14\7\7\0\2\7"+
"\2\0\1\7\21\0\6\7\1\150\13\7\7\0\2\7"+
"\2\0\1\7\21\0\4\7\1\151\15\7\7\0\2\7"+
"\2\0\1\7\21\0\15\7\1\152\4\7\7\0\2\7"+
"\2\0\1\7\21\0\12\7\1\153\7\7\7\0\2\7"+
"\2\0\1\7\21\0\12\7\1\154\7\7\7\0\2\7"+
"\2\0\1\7\21\0\1\155\21\7\7\0\2\7\2\0"+
"\1\7\21\0\11\7\1\156\10\7\7\0\2\7\2\0"+
"\1\7\21\0\6\7\1\153\13\7\7\0\2\7\2\0"+
"\1\7\21\0\2\7\1\157\17\7\7\0\2\7\2\0"+
"\1\7\21\0\3\7\1\160\16\7\7\0\2\7\2\0"+
"\1\7\21\0\6\7\1\161\13\7";
private static int [] zzUnpackTrans() {
int [] result = new int[3525];
int offset = 0;
offset = zzUnpackTrans(ZZ_TRANS_PACKED_0, offset, result);
return result;
}
private static int zzUnpackTrans(String packed, int offset, int [] result) {
int i = 0; /* index in packed string */
int j = offset; /* index in unpacked array */
int l = packed.length();
while (i < l) {
int count = packed.charAt(i++);
int value = packed.charAt(i++);
value--;
do result[j++] = value; while (--count > 0);
}
return j;
}
/* error codes */
private static final int ZZ_UNKNOWN_ERROR = 0;
private static final int ZZ_NO_MATCH = 1;
private static final int ZZ_PUSHBACK_2BIG = 2;
/* error messages for the codes above */
private static final String ZZ_ERROR_MSG[] = {
"Unkown internal scanner error",
"Error: could not match input",
"Error: pushback value was too large"
};
/**
* ZZ_ATTRIBUTE[aState] contains the attributes of state <code>aState</code>
*/
private static final int [] ZZ_ATTRIBUTE = zzUnpackAttribute();
private static final String ZZ_ATTRIBUTE_PACKED_0 =
"\1\0\1\11\1\1\1\11\5\1\1\11\3\1\5\11"+
"\1\1\1\11\20\1\1\11\2\0\1\1\1\0\2\11"+
"\1\1\10\11\1\1\1\11\20\1\1\0\1\1\2\11"+
"\47\1";
private static int [] zzUnpackAttribute() {
int [] result = new int[113];
int offset = 0;
offset = zzUnpackAttribute(ZZ_ATTRIBUTE_PACKED_0, offset, result);
return result;
}
private static int zzUnpackAttribute(String packed, int offset, int [] result) {
int i = 0; /* index in packed string */
int j = offset; /* index in unpacked array */
int l = packed.length();
while (i < l) {
int count = packed.charAt(i++);
int value = packed.charAt(i++);
do result[j++] = value; while (--count > 0);
}
return j;
}
/** the input device */
private java.io.Reader zzReader;
/** the current state of the DFA */
private int zzState;
/** the current lexical state */
private int zzLexicalState = YYINITIAL;
/** this buffer contains the current text to be matched and is
the source of the yytext() string */
private char zzBuffer[] = new char[ZZ_BUFFERSIZE];
/** the textposition at the last accepting state */
private int zzMarkedPos;
/** the textposition at the last state to be included in yytext */
private int zzPushbackPos;
/** the current text position in the buffer */
private int zzCurrentPos;
/** startRead marks the beginning of the yytext() string in the buffer */
private int zzStartRead;
/** endRead marks the last character in the buffer, that has been read
from input */
private int zzEndRead;
/** number of newlines encountered up to the start of the matched text */
private int yyline;
/** the number of characters up to the start of the matched text */
private int yychar;
/**
* the number of characters from the last newline up to the start of the
* matched text
*/
private int yycolumn;
/**
* zzAtBOL == true <=> the scanner is currently at the beginning of a line
*/
private boolean zzAtBOL = true;
/** zzAtEOF == true <=> the scanner is at the EOF */
private boolean zzAtEOF;
/* user code: */
public static void main(String argv[]) { if (argv.length != 1) { System.out.println ("Usage: java MiniJOOL inputfile"); } else { MiniJOOL l =null; try { l = new MiniJOOL(new java.io.FileReader(argv[0])); Symbol s = l.yylex(); while (s.getType() != Symbol.EOF) { System.out.println(s); s = l.yylex(); } } catch (Exception e) { System.out.println("Unexpected exception:"); e.printStackTrace(); } } } private Symbol symbol(int type) { return new Symbol(type, yytext(), yyline, yycolumn); }
/**
* Creates a new scanner
* There is also a java.io.InputStream version of this constructor.
*
* @param in the java.io.Reader to read input from.
*/
public MiniJOOL(java.io.Reader in) {
this.zzReader = in;
}
/**
* Creates a new scanner.
* There is also java.io.Reader version of this constructor.
*
* @param in the java.io.Inputstream to read input from.
*/
public MiniJOOL(java.io.InputStream in) {
this(new java.io.InputStreamReader(in));
}
/**
* Refills the input buffer.
*
* @return <code>false</code>, iff there was new input.
*
* @exception java.io.IOException if any I/O-Error occurs
*/
private boolean zzRefill() throws java.io.IOException {
/* first: make room (if you can) */
if (zzStartRead > 0) {
System.arraycopy(zzBuffer, zzStartRead,
zzBuffer, 0,
zzEndRead-zzStartRead);
/* translate stored positions */
zzEndRead-= zzStartRead;
zzCurrentPos-= zzStartRead;
zzMarkedPos-= zzStartRead;
zzPushbackPos-= zzStartRead;
zzStartRead = 0;
}
/* is the buffer big enough? */
if (zzCurrentPos >= zzBuffer.length) {
/* if not: blow it up */
char newBuffer[] = new char[zzCurrentPos*2];
System.arraycopy(zzBuffer, 0, newBuffer, 0, zzBuffer.length);
zzBuffer = newBuffer;
}
/* finally: fill the buffer with new input */
int numRead = zzReader.read(zzBuffer, zzEndRead,
zzBuffer.length-zzEndRead);
if (numRead < 0) {
return true;
}
else {
zzEndRead+= numRead;
return false;
}
}
/**
* Closes the input stream.
*/
public final void yyclose() throws java.io.IOException {
zzAtEOF = true; /* indicate end of file */
zzEndRead = zzStartRead; /* invalidate buffer */
if (zzReader != null)
zzReader.close();
}
/**
* Resets the scanner to read from a new input stream.
* Does not close the old reader.
*
* All internal variables are reset, the old input stream
* <b>cannot</b> be reused (internal buffer is discarded and lost).
* Lexical state is set to <tt>ZZ_INITIAL</tt>.
*
* @param reader the new input stream
*/
public final void yyreset(java.io.Reader reader) {
zzReader = reader;
zzAtBOL = true;
zzAtEOF = false;
zzEndRead = zzStartRead = 0;
zzCurrentPos = zzMarkedPos = zzPushbackPos = 0;
yyline = yychar = yycolumn = 0;
zzLexicalState = YYINITIAL;
}
/**
* Returns the current lexical state.
*/
public final int yystate() {
return zzLexicalState;
}
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