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Stanford CoreNLP provides a set of natural language analysis tools which can take raw English language text input and give the base forms of words, their parts of speech, whether they are names of companies, people, etc., normalize dates, times, and numeric quantities, mark up the structure of sentences in terms of phrases and word dependencies, and indicate which noun phrases refer to the same entities. It provides the foundational building blocks for higher level text understanding applications.
/* The following code was generated by JFlex 1.5.1 */
package edu.stanford.nlp.trees.international.pennchinese;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
/**
* A lexer for the Penn Chinese Treebank. Supports Chinese characters.
*
* @author Roger Levy
* @author Christopher Manning (fully redid to accept most stuff, add CTB 4-9 XML entities)
*/
class CHTBLexer {
/** 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;
/**
* ZZ_LEXSTATE[l] is the state in the DFA for the lexical state l
* ZZ_LEXSTATE[l+1] is the state in the DFA for the lexical state l
* at the beginning of a line
* l is of the form l = 2*k, k a non negative integer
*/
private static final int ZZ_LEXSTATE[] = {
0, 0
};
/**
* Translates characters to character classes
*/
private static final String ZZ_CMAP_PACKED =
"\11\0\1\7\1\2\1\6\1\6\1\5\22\0\1\7\7\0\1\4"+
"\1\4\5\0\1\24\14\0\1\1\1\0\1\3\2\0\1\21\1\27"+
"\1\12\1\10\1\16\3\0\1\20\3\0\1\22\1\17\1\11\1\15"+
"\1\0\1\26\1\25\1\13\4\0\1\14\5\0\1\23\45\0\1\6"+
"\u1fa2\0\1\6\1\6\udfd6\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\2\1\1\2\1\1\2\2\1\1\1\0\4\1"+
"\2\3\21\1\1\3\1\0\3\1\3\0\1\1\1\0"+
"\1\3\1\0\1\1\1\0\4\1\4\0\5\1\5\0"+
"\4\1\4\0\6\1\6\0\3\1\3\0\1\1\1\0";
private static int [] zzUnpackAction() {
int [] result = new int[92];
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\30\0\60\0\110\0\110\0\140\0\170\0\220"+
"\0\250\0\300\0\330\0\360\0\u0108\0\30\0\110\0\u0120"+
"\0\u0138\0\u0150\0\u0168\0\u0180\0\u0198\0\u01b0\0\u01c8\0\u01e0"+
"\0\u01f8\0\u0210\0\u0228\0\u0240\0\u0258\0\u0270\0\u0288\0\u02a0"+
"\0\u02b8\0\u02d0\0\u02e8\0\u0300\0\u0318\0\u0330\0\u0348\0\u0360"+
"\0\u0378\0\u0390\0\u03a8\0\u03a8\0\u03c0\0\u03d8\0\u03f0\0\u0408"+
"\0\u0420\0\u0438\0\u0450\0\u0468\0\u0480\0\u0498\0\u04b0\0\u04c8"+
"\0\u04e0\0\u04f8\0\u0510\0\u0528\0\u0540\0\u0558\0\u0570\0\u0588"+
"\0\u05a0\0\u05b8\0\u05d0\0\u05e8\0\u0600\0\u0618\0\u0630\0\u0648"+
"\0\u0660\0\u0678\0\u0690\0\u06a8\0\u06c0\0\u06d8\0\u06f0\0\u0708"+
"\0\u0720\0\u0738\0\u0750\0\u0768\0\u0780\0\u0798\0\u07b0\0\u07c8"+
"\0\u07e0\0\u07f8\0\u0810\0\u0828";
private static int [] zzUnpackRowMap() {
int [] result = new int[92];
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\1\4\1\2\1\5\1\6\1\4\1\7"+
"\22\2\1\0\1\2\4\0\20\2\2\10\1\0\1\2"+
"\1\11\1\0\2\11\1\12\1\10\1\13\3\10\1\14"+
"\6\10\1\15\2\10\32\0\1\4\34\0\1\7\20\0"+
"\2\10\1\0\1\16\1\11\1\0\2\11\20\10\2\11"+
"\1\0\1\17\1\11\1\0\22\11\2\10\1\0\1\16"+
"\1\11\1\0\2\11\1\10\1\20\7\10\1\21\10\10"+
"\1\0\1\16\1\11\1\0\2\11\3\10\1\22\16\10"+
"\1\0\1\16\1\11\1\0\2\11\7\10\1\23\12\10"+
"\1\0\1\16\1\11\1\0\2\11\16\10\1\24\3\10"+
"\1\0\1\16\1\11\1\0\2\11\2\10\1\25\17\10"+
"\1\0\1\16\1\11\1\0\2\11\3\10\1\26\16\10"+
"\1\0\1\16\1\11\1\0\2\11\17\10\1\27\2\10"+
"\1\0\1\16\1\11\1\0\2\11\1\30\21\10\1\0"+
"\1\16\1\11\1\0\2\11\2\10\1\27\17\10\1\0"+
"\1\16\1\11\1\0\2\11\3\10\1\31\3\10\1\32"+
"\1\33\11\10\1\0\1\16\1\11\1\0\2\11\6\10"+
"\1\34\13\10\1\0\1\16\1\11\1\0\2\11\10\10"+
"\1\33\11\10\1\0\1\16\1\11\1\0\2\11\3\10"+
"\1\35\7\10\1\36\6\10\1\0\1\16\1\11\1\0"+
"\2\11\4\10\1\37\15\10\1\0\1\16\1\11\1\0"+
"\2\11\1\10\1\40\20\10\1\0\1\16\1\11\1\0"+
"\2\11\1\40\21\10\1\0\1\41\1\11\1\0\1\11"+
"\1\42\3\10\1\35\7\10\2\36\5\10\1\0\1\16"+
"\1\11\1\0\2\11\10\10\1\43\11\10\1\0\1\16"+
"\1\11\1\0\2\11\3\10\1\35\16\10\1\0\1\16"+
"\1\11\1\0\2\11\5\10\1\44\14\10\1\0\1\41"+
"\1\11\1\0\1\11\1\42\20\10\1\45\1\2\1\46"+
"\1\45\4\46\20\45\2\47\1\50\1\17\1\47\1\50"+
"\22\47\2\10\1\0\1\16\1\11\1\0\2\11\12\10"+
"\1\44\7\10\1\0\1\16\1\11\1\0\2\11\6\10"+
"\1\40\11\10\1\45\1\51\1\46\1\45\4\46\20\45"+
"\1\46\1\52\26\46\2\47\1\50\1\53\1\47\1\50"+
"\22\47\3\50\1\54\24\50\2\2\1\0\1\2\4\0"+
"\14\2\1\55\3\2\24\0\1\56\3\0\1\46\1\0"+
"\26\46\2\2\1\0\1\2\4\0\1\57\1\2\1\60"+
"\3\2\1\61\6\2\1\62\2\2\10\0\1\63\1\0"+
"\1\64\3\0\1\65\6\0\1\66\2\0\2\2\1\0"+
"\1\2\4\0\1\2\1\67\7\2\1\70\10\2\1\0"+
"\1\2\4\0\3\2\1\71\16\2\1\0\1\2\4\0"+
"\7\2\1\72\12\2\1\0\1\2\4\0\16\2\1\73"+
"\1\2\11\0\1\74\7\0\1\75\21\0\1\76\33\0"+
"\1\77\36\0\1\100\1\0\2\2\1\0\1\2\4\0"+
"\2\2\1\101\17\2\1\0\1\2\4\0\3\2\1\102"+
"\16\2\1\0\1\2\4\0\17\2\1\103\2\2\1\0"+
"\1\2\4\0\1\104\21\2\1\0\1\2\4\0\2\2"+
"\1\103\15\2\12\0\1\105\30\0\1\106\43\0\1\107"+
"\10\0\1\110\31\0\1\107\15\0\2\2\1\0\1\2"+
"\4\0\3\2\1\111\3\2\1\112\1\113\11\2\1\0"+
"\1\2\4\0\6\2\1\114\13\2\1\0\1\2\4\0"+
"\10\2\1\113\11\2\1\0\1\2\4\0\3\2\1\115"+
"\7\2\1\116\4\2\13\0\1\117\3\0\1\120\1\121"+
"\25\0\1\122\31\0\1\121\22\0\1\123\7\0\1\124"+
"\4\0\2\2\1\0\1\2\4\0\4\2\1\125\15\2"+
"\1\0\1\2\4\0\1\2\1\126\20\2\1\0\1\2"+
"\4\0\1\126\21\2\1\0\1\16\4\0\3\2\1\115"+
"\7\2\2\116\5\2\1\0\1\2\4\0\10\2\1\127"+
"\11\2\1\0\1\2\4\0\3\2\1\115\14\2\14\0"+
"\1\130\24\0\1\131\26\0\1\131\22\0\1\17\7\0"+
"\1\123\7\0\2\124\23\0\1\132\22\0\1\123\14\0"+
"\2\2\1\0\1\2\4\0\5\2\1\133\14\2\1\0"+
"\1\16\4\0\22\2\1\0\1\2\4\0\12\2\1\133"+
"\5\2\15\0\1\134\15\0\1\17\46\0\1\134\5\0"+
"\2\2\1\0\1\2\4\0\6\2\1\126\11\2\16\0"+
"\1\131\11\0";
private static int [] zzUnpackTrans() {
int [] result = new int[2112];
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 aState
*/
private static final int [] ZZ_ATTRIBUTE = zzUnpackAttribute();
private static final String ZZ_ATTRIBUTE_PACKED_0 =
"\1\0\2\1\2\11\3\1\1\0\5\1\1\11\22\1"+
"\1\0\3\1\3\0\1\1\1\0\1\1\1\0\1\1"+
"\1\0\4\1\4\0\5\1\5\0\4\1\4\0\6\1"+
"\6\0\3\1\3\0\1\1\1\0";
private static int [] zzUnpackAttribute() {
int [] result = new int[92];
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 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 static final boolean DBG = false;
public static final int IGNORE = 0;
public static final int ACCEPT = 1;
public String match() {
return yytext();
}
private static void reportError(String yytext) {
try {
PrintWriter p = new PrintWriter(new OutputStreamWriter(System.err,
"utf-8"), true);
p.println("chtbl.flex tokenization error: \"" + yytext + "\"");
if (yytext.length() >= 1) {
p.println("First character is: " + yytext.charAt(0));
if (yytext.length() >= 2) {
p.println("Second character is: " + yytext.charAt(1));
}
}
} catch (UnsupportedEncodingException e) {
System.err.println("chtbl.flex tokenization and encoding present error");
}
}
/**
* 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.
*/
CHTBLexer(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.
*/
CHTBLexer(java.io.InputStream in) {
this(new java.io.InputStreamReader
(in, java.nio.charset.Charset.forName("UTF-8")));
}
/**
* 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 < 88) {
int count = packed.charAt(i++);
char value = packed.charAt(i++);
do map[j++] = value; while (--count > 0);
}
return map;
}
/**
* Refills the input buffer.
*
* @return false, 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;
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) {
zzEndRead+= numRead;
return false;
}
// unlikely but not impossible: read 0 characters, but not at end of stream
if (numRead == 0) {
int c = zzReader.read();
if (c == -1) {
return true;
} else {
zzBuffer[zzEndRead++] = (char) c;
return false;
}
}
// numRead < 0
return true;
}
/**
* 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
* cannot be reused (internal buffer is discarded and lost).
* Lexical state is set to ZZ_INITIAL.
*
* Internal scan buffer is resized down to its initial length, if it has grown.
*
* @param reader the new input stream
*/
public final void yyreset(java.io.Reader reader) {
zzReader = reader;
zzAtBOL = true;
zzAtEOF = false;
zzEOFDone = false;
zzEndRead = zzStartRead = 0;
zzCurrentPos = zzMarkedPos = 0;
yyline = yychar = yycolumn = 0;
zzLexicalState = YYINITIAL;
if (zzBuffer.length > ZZ_BUFFERSIZE)
zzBuffer = new char[ZZ_BUFFERSIZE];
}
/**
* Returns the current lexical state.
*/
public final int yystate() {
return zzLexicalState;
}
/**
* Enters a new lexical state
*
* @param newState the new lexical state
*/
public final void yybegin(int newState) {
zzLexicalState = newState;
}
/**
* Returns the text matched by the current regular expression.
*/
public final String yytext() {
return new String( zzBuffer, zzStartRead, zzMarkedPos-zzStartRead );
}
/**
* Returns the character at position pos from the
* matched text.
*
* It is equivalent to yytext().charAt(pos), but faster
*
* @param pos the position of the character to fetch.
* A value from 0 to yylength()-1.
*
* @return the character at position pos
*/
public final char yycharat(int pos) {
return zzBuffer[zzStartRead+pos];
}
/**
* Returns the length of the matched text region.
*/
public final int yylength() {
return zzMarkedPos-zzStartRead;
}
/**
* Reports an error that occured while scanning.
*
* In a wellformed scanner (no or only correct usage of
* yypushback(int) and a match-all fallback rule) this method
* will only be called with things that "Can't Possibly Happen".
* If this method is called, something is seriously wrong
* (e.g. a JFlex bug producing a faulty scanner etc.).
*
* Usual syntax/scanner level error handling should be done
* in error fallback rules.
*
* @param errorCode the code of the errormessage to display
*/
private void zzScanError(int errorCode) {
String message;
try {
message = ZZ_ERROR_MSG[errorCode];
}
catch (ArrayIndexOutOfBoundsException e) {
message = ZZ_ERROR_MSG[ZZ_UNKNOWN_ERROR];
}
throw new Error(message);
}
/**
* Pushes the specified amount of characters back into the input stream.
*
* They will be read again by then next call of the scanning method
*
* @param number the number of characters to be read again.
* This number must not be greater than yylength()!
*/
public void yypushback(int number) {
if ( number > yylength() )
zzScanError(ZZ_PUSHBACK_2BIG);
zzMarkedPos -= number;
}
/**
* Resumes scanning until the next regular expression is matched,
* the end of input is encountered or an I/O-Error occurs.
*
* @return the next token
* @exception java.io.IOException if any I/O-Error occurs
*/
public int yylex() throws java.io.IOException {
int zzInput;
int zzAction;
// cached fields:
int zzCurrentPosL;
int zzMarkedPosL;
int zzEndReadL = zzEndRead;
char [] zzBufferL = zzBuffer;
char [] zzCMapL = ZZ_CMAP;
int [] zzTransL = ZZ_TRANS;
int [] zzRowMapL = ZZ_ROWMAP;
int [] zzAttrL = ZZ_ATTRIBUTE;
while (true) {
zzMarkedPosL = zzMarkedPos;
zzAction = -1;
zzCurrentPosL = zzCurrentPos = zzStartRead = zzMarkedPosL;
zzState = ZZ_LEXSTATE[zzLexicalState];
// set up zzAction for empty match case:
int zzAttributes = zzAttrL[zzState];
if ( (zzAttributes & 1) == 1 ) {
zzAction = zzState;
}
zzForAction: {
while (true) {
if (zzCurrentPosL < zzEndReadL)
zzInput = zzBufferL[zzCurrentPosL++];
else if (zzAtEOF) {
zzInput = YYEOF;
break zzForAction;
}
else {
// store back cached positions
zzCurrentPos = zzCurrentPosL;
zzMarkedPos = zzMarkedPosL;
boolean eof = zzRefill();
// get translated positions and possibly new buffer
zzCurrentPosL = zzCurrentPos;
zzMarkedPosL = zzMarkedPos;
zzBufferL = zzBuffer;
zzEndReadL = zzEndRead;
if (eof) {
zzInput = YYEOF;
break zzForAction;
}
else {
zzInput = zzBufferL[zzCurrentPosL++];
}
}
int zzNext = zzTransL[ zzRowMapL[zzState] + zzCMapL[zzInput] ];
if (zzNext == -1) break zzForAction;
zzState = zzNext;
zzAttributes = zzAttrL[zzState];
if ( (zzAttributes & 1) == 1 ) {
zzAction = zzState;
zzMarkedPosL = zzCurrentPosL;
if ( (zzAttributes & 8) == 8 ) break zzForAction;
}
}
}
// store back cached position
zzMarkedPos = zzMarkedPosL;
switch (zzAction < 0 ? zzAction : ZZ_ACTION[zzAction]) {
case 1:
{ if (DBG) System.err.printf("Accepting |%s|%n", yytext());
return ACCEPT;
}
case 4: break;
case 2:
{ return IGNORE;
}
case 5: break;
case 3:
{ if (DBG) System.err.printf("Ignoring |%s|%n", yytext());
return IGNORE;
}
case 6: break;
default:
if (zzInput == YYEOF && zzStartRead == zzCurrentPos) {
zzAtEOF = true;
return YYEOF;
}
else {
zzScanError(ZZ_NO_MATCH);
}
}
}
}
}