📄 exprelexer.java.svn-base
字号:
/* The following code was generated by JFlex 1.4.1 on 08-4-11 上午9:26 */
package edu.ustc.cs.compile.parser.expr;
import java.util.Stack;
import java_cup.runtime.*;
/**
* This class is a scanner generated by
* <a href="http://www.jflex.de/">JFlex</a> 1.4.1
* on 08-4-11 上午9:26 from the specification file
* <tt>F:/zhz/work/upload/svn/ComplierProj/student/lab/lab3/config/JFlex/expr_err.flex</tt>
*/
public class ExprELexer implements java_cup.runtime.Scanner {
/** 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 String ZZ_CMAP_PACKED =
"\11\0\1\3\1\5\1\0\1\2\1\4\22\0\1\3\7\1\1\13"+
"\1\14\1\20\1\16\1\1\1\17\1\1\1\6\12\12\1\1\1\15"+
"\1\1\1\21\3\1\32\10\6\1\32\10\4\1\53\0\1\7\12\0"+
"\1\7\4\0\1\7\5\0\27\7\1\0\37\7\1\0\u013f\7\31\0"+
"\162\7\4\0\14\7\16\0\5\7\11\0\1\7\213\0\1\7\13\0"+
"\1\7\1\0\3\7\1\0\1\7\1\0\24\7\1\0\54\7\1\0"+
"\46\7\1\0\5\7\4\0\202\7\10\0\105\7\1\0\46\7\2\0"+
"\2\7\6\0\20\7\41\0\46\7\2\0\1\7\7\0\47\7\110\0"+
"\33\7\5\0\3\7\56\0\32\7\5\0\13\7\25\0\12\11\4\0"+
"\2\7\1\0\143\7\1\0\1\7\17\0\2\7\7\0\2\7\12\11"+
"\3\7\2\0\1\7\20\0\1\7\1\0\36\7\35\0\3\7\60\0"+
"\46\7\13\0\1\7\u0152\0\66\7\3\0\1\7\22\0\1\7\7\0"+
"\12\7\4\0\12\11\25\0\10\7\2\0\2\7\2\0\26\7\1\0"+
"\7\7\1\0\1\7\3\0\4\7\3\0\1\7\36\0\2\7\1\0"+
"\3\7\4\0\12\11\2\7\23\0\6\7\4\0\2\7\2\0\26\7"+
"\1\0\7\7\1\0\2\7\1\0\2\7\1\0\2\7\37\0\4\7"+
"\1\0\1\7\7\0\12\11\2\0\3\7\20\0\11\7\1\0\3\7"+
"\1\0\26\7\1\0\7\7\1\0\2\7\1\0\5\7\3\0\1\7"+
"\22\0\1\7\17\0\2\7\4\0\12\11\25\0\10\7\2\0\2\7"+
"\2\0\26\7\1\0\7\7\1\0\2\7\1\0\5\7\3\0\1\7"+
"\36\0\2\7\1\0\3\7\4\0\12\11\1\0\1\7\21\0\1\7"+
"\1\0\6\7\3\0\3\7\1\0\4\7\3\0\2\7\1\0\1\7"+
"\1\0\2\7\3\0\2\7\3\0\3\7\3\0\10\7\1\0\3\7"+
"\55\0\11\11\25\0\10\7\1\0\3\7\1\0\27\7\1\0\12\7"+
"\1\0\5\7\46\0\2\7\4\0\12\11\25\0\10\7\1\0\3\7"+
"\1\0\27\7\1\0\12\7\1\0\5\7\3\0\1\7\40\0\1\7"+
"\1\0\2\7\4\0\12\11\25\0\10\7\1\0\3\7\1\0\27\7"+
"\1\0\20\7\46\0\2\7\4\0\12\11\25\0\22\7\3\0\30\7"+
"\1\0\11\7\1\0\1\7\2\0\7\7\72\0\60\7\1\0\2\7"+
"\14\0\7\7\11\0\12\11\47\0\2\7\1\0\1\7\2\0\2\7"+
"\1\0\1\7\2\0\1\7\6\0\4\7\1\0\7\7\1\0\3\7"+
"\1\0\1\7\1\0\1\7\2\0\2\7\1\0\4\7\1\0\2\7"+
"\11\0\1\7\2\0\5\7\1\0\1\7\11\0\12\11\2\0\2\7"+
"\42\0\1\7\37\0\12\11\26\0\10\7\1\0\42\7\35\0\4\7"+
"\164\0\42\7\1\0\5\7\1\0\2\7\25\0\12\11\6\0\6\7"+
"\112\0\46\7\12\0\51\7\7\0\132\7\5\0\104\7\5\0\122\7"+
"\6\0\7\7\1\0\77\7\1\0\1\7\1\0\4\7\2\0\7\7"+
"\1\0\1\7\1\0\4\7\2\0\47\7\1\0\1\7\1\0\4\7"+
"\2\0\37\7\1\0\1\7\1\0\4\7\2\0\7\7\1\0\1\7"+
"\1\0\4\7\2\0\7\7\1\0\7\7\1\0\27\7\1\0\37\7"+
"\1\0\1\7\1\0\4\7\2\0\7\7\1\0\47\7\1\0\23\7"+
"\16\0\11\11\56\0\125\7\14\0\u026c\7\2\0\10\7\12\0\32\7"+
"\5\0\113\7\25\0\15\7\1\0\4\7\16\0\22\7\16\0\22\7"+
"\16\0\15\7\1\0\3\7\17\0\64\7\43\0\1\7\4\0\1\7"+
"\3\0\12\11\46\0\12\11\6\0\130\7\10\0\51\7\127\0\35\7"+
"\51\0\12\11\36\7\2\0\5\7\u038b\0\154\7\224\0\234\7\4\0"+
"\132\7\6\0\26\7\2\0\6\7\2\0\46\7\2\0\6\7\2\0"+
"\10\7\1\0\1\7\1\0\1\7\1\0\1\7\1\0\37\7\2\0"+
"\65\7\1\0\7\7\1\0\1\7\3\0\3\7\1\0\7\7\3\0"+
"\4\7\2\0\6\7\4\0\15\7\5\0\3\7\1\0\7\7\164\0"+
"\1\7\15\0\1\7\202\0\1\7\4\0\1\7\2\0\12\7\1\0"+
"\1\7\3\0\5\7\6\0\1\7\1\0\1\7\1\0\1\7\1\0"+
"\4\7\1\0\3\7\1\0\7\7\3\0\3\7\5\0\5\7\u0ebb\0"+
"\2\7\52\0\5\7\5\0\2\7\4\0\126\7\6\0\3\7\1\0"+
"\132\7\1\0\4\7\5\0\50\7\4\0\136\7\21\0\30\7\70\0"+
"\20\7\u0200\0\u19b6\7\112\0\u51a6\7\132\0\u048d\7\u0773\0\u2ba4\7\u215c\0"+
"\u012e\7\2\0\73\7\225\0\7\7\14\0\5\7\5\0\1\7\1\0"+
"\12\7\1\0\15\7\1\0\5\7\1\0\1\7\1\0\2\7\1\0"+
"\2\7\1\0\154\7\41\0\u016b\7\22\0\100\7\2\0\66\7\50\0"+
"\14\7\164\0\5\7\1\0\207\7\23\0\12\11\7\0\32\7\6\0"+
"\32\7\13\0\131\7\3\0\6\7\2\0\6\7\2\0\6\7\2\0"+
"\3\7\43\0";
/**
* Translates characters to character classes
*/
private static final char [] ZZ_CMAP = zzUnpackCMap(ZZ_CMAP_PACKED);
/**
* Translates DFA states to action switch labels.
*/
private static final int [] ZZ_ACTION = zzUnpackAction();
private static final String ZZ_ACTION_PACKED_0 =
"\1\0\1\1\2\2\1\3\1\4\1\5\1\6\1\7"+
"\1\10\1\11\1\12\1\13\1\14\1\2";
private static int [] zzUnpackAction() {
int [] result = new int[15];
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\22\0\22\0\44\0\66\0\110\0\132\0\22"+
"\0\22\0\22\0\22\0\22\0\22\0\22\0\154";
private static int [] zzUnpackRowMap() {
int [] result = new int[15];
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 =
"\2\2\2\3\1\4\1\3\1\5\2\6\2\7\1\10"+
"\1\11\1\12\1\13\1\14\1\15\1\16\27\0\1\3"+
"\22\0\1\17\22\0\4\6\20\0\2\7\10\0\1\17"+
"\1\0\1\17\2\0\1\17\1\0\1\17\1\0\10\17";
private static int [] zzUnpackTrans() {
int [] result = new int[126];
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\2\11\4\1\7\11\1\1";
private static int [] zzUnpackAttribute() {
int [] result = new int[15];
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;
/** denotes if the user-EOF-code has already been executed */
private boolean zzEOFDone;
/* user code: */
private StringBuffer string = new StringBuffer();
private Stack<LParen> lparenStack = new Stack<LParen>();
private int preSymbol = -1;
private boolean debug = true;
private class LParen {
private int line = -1;
private int column = -1;
public LParen(int line, int column) {
this.line = line;
this.column = column;
}
public int line() {
return this.line;
}
public int column() {
return this.column;
}
}
private void errMsg(String msg, int line, int column) {
System.err.print("ERROR: ");
System.err.print("At line "+line+", column "+column+" : "); System.err.println(msg);
}
private void debugMsg(String msg) {
System.err.print("DEBUG: ");
System.err.println(msg);
}
private Symbol symbol(int type) {
preSymbol = type;
System.err.println("TOKEN: "+yytext());
return new Symbol(type, yyline+1, yycolumn+1);
}
private Symbol symbol(int type, int preType) {
preSymbol = preType;
System.err.println("TOKEN: "+yytext());
return new Symbol(type, yyline+1, yycolumn+1);
}
private Symbol symbol(int type, Object value) {
preSymbol = type;
System.err.println("TOKEN: "+yytext());
return new Symbol(type, yyline+1, yycolumn+1, value);
}
private Symbol symbol(int type, Object value, int preType) {
preSymbol = preType;
System.err.println("TOKEN: "+yytext());
return new Symbol(type, yyline+1, yycolumn+1, value);
}
/**
* assumes correct representation of a long value for
* specified radix in scanner buffer from <code>start</code>
* to <code>end</code>
*/
private long parseLong(int start, int end, int radix) {
long result = 0;
long digit;
for (int i = start; i < end; i++) {
digit = Character.digit(yycharat(i),radix);
result*= radix;
result+= digit;
}
return result;
}
/**
* 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 ExprELexer(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 ExprELexer(java.io.InputStream in) {
this(new java.io.InputStreamReader(in));
}
/**
* Unpacks the compressed character translation table.
*
* @param packed the packed character translation table
* @return the unpacked character translation table
*/
private static char [] zzUnpackCMap(String packed) {
char [] map = new char[0x10000];
int i = 0; /* index in packed string */
int j = 0; /* index in unpacked array */
while (i < 1224) {
int count = packed.charAt(i++);
char value = packed.charAt(i++);
do map[j++] = value; while (--count > 0);
}
return map;
}
/**
* 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 */
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -