/**
* Copyright (c) 2005-2010, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
* <p/>
* WSO2 Inc. licenses this file to you under the Apache License,
* Version 2.0 (the "License"); you may not use this file except
* in compliance with the License.
* You may obtain a copy of the License at
* <p/>
* http://www.apache.org/licenses/LICENSE-2.0
* <p/>
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.synapse.commons.staxon.core.json.stream.impl;
import java.util.Stack;
/**
* This class is a scanner generated by
* <a href="http://www.jflex.de/">JFlex</a> 1.4.3
* on 10/23/13 10:52 AM from the specification file
* <tt>/home/ishan/wso2/src/pub/platform/branches/4.2.0/dependencies/staxon/1.2.0-wso2v1/core/src/main/jflex/Yylex.flex</tt>
*/
public final class JsonScanner2 implements JsonStreamSourceImpl.Scanner {
/**
* This character denotes the end of file
*/
private static final int YYEOF = -1;
/**
* initial size of the lookahead buffer
*/
private static final int ZZ_BUFFERSIZE = 16384;
/**
* lexical states
*/
private static final int STRING = 2;
private 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, 1, 1
};
/**
* Translates characters to character classes
*/
private static final String ZZ_CMAP_PACKED =
"\10\0\2\1\1\35\2\0\1\32\22\0\1\1\1\0\1\31\10\0" +
"\1\7\1\13\1\2\1\5\1\33\1\3\11\4\1\14\6\0\4\12" +
"\1\6\1\12\24\0\1\15\1\10\1\16\3\0\1\27\1\34\2\12" +
"\1\25\1\26\5\0\1\22\1\0\1\21\3\0\1\24\1\30\1\23" +
"\1\11\5\0\1\17\1\0\1\20\uff82\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 =
"\2\0\1\1\1\2\1\1\2\3\1\4\1\5\1\6" +
"\1\7\1\10\1\11\3\1\1\12\1\13\1\1\1\14" +
"\5\0\1\15\1\0\1\16\1\17\1\20\1\21\1\22" +
"\1\23\1\24\1\3\1\0\1\3\4\0\1\25\1\26" +
"\2\0\1\27\1\0\1\30";
private static int[] zzUnpackAction() {
int[] result = new int[48];
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\36\0\74\0\74\0\132\0\170\0\226\0\74" +
"\0\74\0\74\0\74\0\74\0\74\0\264\0\322\0\360" +
"\0\74\0\u010e\0\u012c\0\74\0\u014a\0\u0168\0\u0186\0\u01a4" +
"\0\u01c2\0\74\0\u01e0\0\74\0\74\0\74\0\74\0\74" +
"\0\74\0\74\0\u01fe\0\u021c\0\u021c\0\u023a\0\u0258\0\u0276" +
"\0\u0294\0\74\0\74\0\u02b2\0\u02d0\0\74\0\u02ee\0\74";
private static int[] zzUnpackRowMap() {
int[] result = new int[48];
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\3\1\4\1\5\1\6\1\7\6\3\1\10\1\11" +
"\1\12\1\13\1\14\1\15\1\16\1\3\1\17\2\3" +
"\1\20\2\3\1\21\1\4\2\3\1\4\10\22\1\23" +
"\20\22\1\24\1\3\2\22\42\0\1\6\1\7\36\0" +
"\1\25\1\26\16\0\1\26\13\0\2\7\1\25\1\26" +
"\16\0\1\26\21\0\1\27\50\0\1\30\40\0\1\31" +
"\6\0\10\22\1\0\20\22\2\0\2\22\11\0\1\32" +
"\1\33\7\0\1\34\1\0\1\35\1\36\1\0\1\37" +
"\2\0\1\40\1\0\1\41\1\42\4\0\2\43\33\0" +
"\1\44\2\45\2\0\1\44\50\0\1\46\24\0\1\47" +
"\46\0\1\50\16\0\2\51\1\0\1\51\3\0\1\51" +
"\12\0\3\51\4\0\1\51\4\0\2\43\1\0\1\26" +
"\16\0\1\26\13\0\2\45\53\0\1\52\40\0\1\53" +
"\40\0\1\54\10\0\2\55\1\0\1\55\3\0\1\55" +
"\12\0\3\55\4\0\1\55\26\0\1\56\13\0\2\57" +
"\1\0\1\57\3\0\1\57\12\0\3\57\4\0\1\57" +
"\4\0\2\60\1\0\1\60\3\0\1\60\12\0\3\60" +
"\4\0\1\60\1\0";
private static int[] zzUnpackTrans() {
int[] result = new int[780];
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 =
"\2\0\2\11\3\1\6\11\3\1\1\11\2\1\1\11" +
"\5\0\1\11\1\0\7\11\1\1\1\0\1\1\4\0" +
"\2\11\2\0\1\11\1\0\1\11";
private static int[] zzUnpackAttribute() {
int[] result = new int[48];
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 StringBuilder builder = new StringBuilder();
private String text = null;
public String getText() {
return text;
}
public Symbol nextSymbol() throws java.io.IOException {
return yylex();
}
public void close() throws java.io.IOException {
yyclose();
}
public int getCharOffset() {
return yychar;
}
public int getLineNumber() {
return yyline;
}
public int getColumnNumber() {
return 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 JsonScanner2(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 JsonScanner2(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 < 92) {
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.
* @throws 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.
*/
private 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.
* <p/>
* 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
*/
private 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;
}
/**
* Returns the current lexical state.
*/
private final int yystate() {
return zzLexicalState;
}
/**
* Enters a new lexical state
*
* @param newState the new lexical state
*/
private final void yybegin(int newState) {
zzLexicalState = newState;
}
/**
* Returns the text matched by the current regular expression.
*/
private final String yytext() {
return new String(zzBuffer, zzStartRead, zzMarkedPos - zzStartRead);
}
/**
* Returns the character at position <tt>pos</tt> from the
* matched text.
* <p/>
* 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
*/
private final char yycharat(int pos) {
return zzBuffer[zzStartRead + pos];
}
/**
* Returns the length of the matched text region.
*/
private final int yylength() {
return zzMarkedPos - zzStartRead;
}
/**
* Reports an error that occured while scanning.
* <p/>
* 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.).
* <p/>
* 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.
* <p/>
* 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()!
*/
private void yypushback(int number) {
if (number > yylength()) {
zzScanError(ZZ_PUSHBACK_2BIG);
}
zzMarkedPos -= number;
}
private Symbol lastSymbol = null;
private Stack<Boolean> arrays = new Stack<Boolean>();
/**
* 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
* @throws java.io.IOException if any I/O-Error occurs
*/
private Symbol yylex() throws java.io.IOException {
if (lastSymbol == Symbol.SO_ARRAY) {
lastSymbol = Symbol.SO_COLON_1;
text = Constants.ARRAY;
return Symbol.STRING;
} else if (lastSymbol == Symbol.SO_COLON_1) {
lastSymbol = Symbol.SO_ELEMENT;
text = null;
return Symbol.COLON;
} else if (lastSymbol == Symbol.SO_ELEMENT) {
lastSymbol = Symbol.SO_COLON_2;
text = null;
return Symbol.START_OBJECT;
} else if (lastSymbol == Symbol.SO_COLON_2) {
lastSymbol = Symbol.SO_END;
text = Constants.ARRAY_ELEM;
return Symbol.STRING;
} else if (lastSymbol == Symbol.SO_END) {
lastSymbol = Symbol.SO_END_2;
text = null;
return Symbol.COLON;
} else if (lastSymbol == Symbol.SO_END_2) {
lastSymbol = Symbol.START_ARRAY;
text = null;
return Symbol.START_ARRAY;
} else if (lastSymbol == Symbol.SO_ARRAY_END) {
lastSymbol = Symbol.SO_ARRAY_END_2;
text = null;
return Symbol.END_OBJECT;
} else if (lastSymbol == Symbol.SO_ARRAY_END_2) {
text = null;
lastSymbol = Symbol.END_ARRAY;
return Symbol.END_OBJECT;
}
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;
yychar += zzMarkedPosL - zzStartRead;
boolean zzR = false;
for (zzCurrentPosL = zzStartRead; zzCurrentPosL < zzMarkedPosL;
zzCurrentPosL++) {
switch (zzBufferL[zzCurrentPosL]) {
case '\u000B':
case '\u000C':
case '\u0085':
case '\u2028':
case '\u2029':
yyline++;
yycolumn = 0;
zzR = false;
break;
case '\r':
yyline++;
yycolumn = 0;
zzR = true;
break;
case '\n':
if (zzR) {
zzR = false;
} else {
yyline++;
yycolumn = 0;
}
break;
default:
zzR = false;
yycolumn++;
}
}
if (zzR) {
// peek one character ahead if it is \n (if we have counted one line too much)
boolean zzPeek;
if (zzMarkedPosL < zzEndReadL) {
zzPeek = zzBufferL[zzMarkedPosL] == '\n';
} else if (zzAtEOF) {
zzPeek = false;
} else {
boolean eof = zzRefill();
zzEndReadL = zzEndRead;
zzMarkedPosL = zzMarkedPos;
zzBufferL = zzBuffer;
if (eof) {
zzPeek = false;
} else {
zzPeek = zzBufferL[zzMarkedPosL] == '\n';
}
}
if (zzPeek) {
yyline--;
}
}
zzAction = -1;
zzCurrentPosL = zzCurrentPos = zzStartRead = zzMarkedPosL;
zzState = ZZ_LEXSTATE[zzLexicalState];
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;
int 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 22: {
text = "true";
lastSymbol = Symbol.TRUE;
return Symbol.TRUE;
}
case 25:
break;
case 7: {
text = null;
//System.out.println(lastSymbol + " => " + Symbol.END_ARRAY);
boolean isAnonymousArray = arrays.pop();
if (isAnonymousArray) {
lastSymbol = Symbol.SO_ARRAY_END;
return Symbol.END_ARRAY;
}
lastSymbol = Symbol.END_ARRAY;
return Symbol.END_ARRAY;
}
case 26:
break;
case 1: {
lastSymbol = null;
throw new java.io.IOException("Illegal character: <" + yytext() + ">");
}
case 27:
break;
case 16: {
builder.append('\r');
}
case 28:
break;
case 24: {
builder.append(Character.toChars(Integer.parseInt(yytext().substring(2), 16)));
}
case 29:
break;
case 23: {
text = "false";
//System.out.println(lastSymbol + " => " + Symbol.FALSE);
lastSymbol = Symbol.FALSE;
return Symbol.FALSE;
}
case 30:
break;
case 18: {
builder.append('\"');
}
case 31:
break;
case 12: {
text = builder.toString();
yybegin(YYINITIAL);
//System.out.println(lastSymbol + " => " + Symbol.STRING);
lastSymbol = Symbol.STRING;
return Symbol.STRING;
}
case 32:
break;
case 10: {
builder.setLength(0);
yybegin(STRING);
}
case 33:
break;
case 21: {
text = "null";
//System.out.println(lastSymbol + " => " + Symbol.NULL);
lastSymbol = Symbol.NULL;
return Symbol.NULL;
}
case 34:
break;
case 19: {
builder.append('/');
}
case 35:
break;
case 17: {
builder.append('\f');
}
case 36:
break;
case 6: {
text = null;
//System.out.println(lastSymbol + " => " + Symbol.START_ARRAY);
// TODO: leaving the null check otherwise it will introduce test failures.
// if (lastSymbol == Symbol.START_ARRAY || lastSymbol == Symbol.COMMA || lastSymbol == null) {
if (lastSymbol == Symbol.START_ARRAY || lastSymbol == Symbol.COMMA) {
arrays.push(true);
lastSymbol = Symbol.SO_ARRAY;
text = null;
return Symbol.START_OBJECT;
}
lastSymbol = Symbol.START_ARRAY;
arrays.push(false);
return Symbol.START_ARRAY;
}
case 37:
break;
case 15: {
builder.append('\t');
}
case 38:
break;
case 8: {
text = null;
//System.out.println(lastSymbol + " => " + Symbol.START_OBJECT);
lastSymbol = Symbol.START_OBJECT;
return Symbol.START_OBJECT;
}
case 39:
break;
case 9: {
text = null;
//System.out.println(lastSymbol + " => " + Symbol.END_OBJECT);
lastSymbol = Symbol.END_OBJECT;
return Symbol.END_OBJECT;
}
case 40:
break;
case 4: {
text = null;
//System.out.println(lastSymbol + " => " + Symbol.COMMA);
lastSymbol = Symbol.COMMA;
return Symbol.COMMA;
}
case 41:
break;
case 14: {
builder.append('\n');
}
case 42:
break;
case 11: {
builder.append(yytext());
}
case 43:
break;
case 3: {
text = yytext();
//System.out.println(lastSymbol + " => " + Symbol.NUMBER);
lastSymbol = Symbol.NUMBER;
return Symbol.NUMBER;
}
case 44:
break;
case 20: {
builder.append('\b');
}
case 45:
break;
case 5: {
text = null;
//System.out.println(lastSymbol + " => " + Symbol.COLON);
lastSymbol = Symbol.COLON;
return Symbol.COLON;
}
case 46:
break;
case 13: {
builder.append('\\');
}
case 47:
break;
case 2: { /* ignore whitespace */
}
case 48:
break;
default:
if (zzInput == YYEOF && zzStartRead == zzCurrentPos) {
zzAtEOF = true;
{
text = null;
//System.out.println(lastSymbol + " => " + Symbol.EOF);
lastSymbol = Symbol.EOF;
return Symbol.EOF;
}
} else {
zzScanError(ZZ_NO_MATCH);
}
}
}
}
}