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apache / chemistry-opencmis / c4e06fbafdd49db817ce72d8b7a9db0b9bdb4e00 / . / chemistry-opencmis-commons / chemistry-opencmis-commons-impl / src / main / java / org / apache / chemistry / opencmis / commons / impl / json / parser / Yylex.java
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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.chemistry.opencmis.commons.impl.json.parser;
import java.math.BigDecimal;
import java.math.BigInteger;
/**
* (Taken from JSON.simple <http://code.google.com/p/json-simple/> and
* modified for OpenCMIS.)
*/
class Yylex {
/** 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;
/** the maximum length of a string */
private static final int MAX_STRING_LENGTH = 100 * 1024;
/** lexical states */
public static final int YYINITIAL = 0;
public static final int STRING_BEGIN = 2;
/**
* 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 = "\11\0\1\7\1\7\2\0\1\7\22\0\1\7\1\0\1\11\10\0"
+ "\1\6\1\31\1\2\1\4\1\12\12\3\1\32\6\0\4\1\1\5" + "\1\1\24\0\1\27\1\10\1\30\3\0\1\22\1\13\2\1\1\21"
+ "\1\14\5\0\1\23\1\0\1\15\3\0\1\16\1\24\1\17\1\20" + "\5\0\1\25\1\0\1\26\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\2\1\1\2\1\3\1\4\3\1\1\5\1\6"
+ "\1\7\1\10\1\11\1\12\1\13\1\14\1\15\5\0" + "\1\14\1\16\1\17\1\20\1\21\1\22\1\23\1\24"
+ "\1\0\1\25\1\0\1\25\4\0\1\26\1\27\2\0" + "\1\30";
private static int[] zzUnpackAction() {
int[] result = new int[45];
zzUnpackAction(ZZ_ACTION_PACKED_0, 0, 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\33\0\66\0\121\0\154\0\207\0\66\0\242"
+ "\0\275\0\330\0\66\0\66\0\66\0\66\0\66\0\66"
+ "\0\363\0\u010e\0\66\0\u0129\0\u0144\0\u015f\0\u017a\0\u0195"
+ "\0\66\0\66\0\66\0\66\0\66\0\66\0\66\0\66"
+ "\0\u01b0\0\u01cb\0\u01e6\0\u01e6\0\u0201\0\u021c\0\u0237\0\u0252" + "\0\66\0\66\0\u026d\0\u0288\0\66";
private static int[] zzUnpackRowMap() {
int[] result = new int[45];
zzUnpackRowMap(ZZ_ROWMAP_PACKED_0, 0, 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 = { 2, 2, 3, 4, 2, 2, 2, 5, 2, 6, 2, 2, 7, 8, 2, 9, 2, 2, 2, 2, 2, 10, 11, 12,
13, 14, 15, 16, 16, 16, 16, 16, 16, 16, 16, 17, 18, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, 4, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, 4, 19, 20, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 20, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 5, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 21, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 22, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 23, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, 16, 16, 16, 16, 16, 16, 16, 16, -1, -1, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, -1, -1, -1, -1, -1, -1, -1, -1, 24, 25, 26, 27, 28, 29, 30, 31, 32, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, 33, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, 34, 35, -1, -1, 34, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 36, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 37, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 38, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, 39, -1, 39, -1, 39, -1, -1, -1, -1, -1, 39, 39, -1, -1, -1, -1, 39, 39, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, 33, -1, 20, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 20, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, 35, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 38, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 40, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 41, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, 42, -1, 42, -1, 42, -1, -1, -1, -1, -1, 42, 42, -1, -1, -1, -1, 42, 42, -1, -1, -1, -1, -1,
-1, -1, -1, -1, 43, -1, 43, -1, 43, -1, -1, -1, -1, -1, 43, 43, -1, -1, -1, -1, 43, 43, -1, -1, -1, -1, -1,
-1, -1, -1, -1, 44, -1, 44, -1, 44, -1, -1, -1, -1, -1, 44, 44, -1, -1, -1, -1, 44, 44, -1, -1, -1, -1, -1,
-1, -1, -1, };
/* 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\1\11\3\1\1\11\3\1\6\11\2\1\1\11"
+ "\5\0\10\11\1\0\1\1\1\0\1\1\4\0\2\11" + "\2\0\1\11";
private static int[] zzUnpackAttribute() {
int[] result = new int[45];
zzUnpackAttribute(ZZ_ATTRIBUTE_PACKED_0, 0, 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;
/** the number of characters up to the start of the matched text */
private int yychar;
/** zzAtEOF == true <=> the scanner is at the EOF */
private boolean zzAtEOF;
/* user code: */
private StringBuilder sb = new StringBuilder(128);
int getPosition() {
return yychar;
}
/**
* 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.
*/
Yylex(java.io.Reader in) {
this.zzReader = 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 < 90) {
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;
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 <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;
zzAtEOF = false;
zzEndRead = 0;
zzStartRead = 0;
zzCurrentPos = 0;
zzMarkedPos = 0;
yychar = 0;
zzLexicalState = YYINITIAL;
}
/**
* 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);
}
/**
* Adds the text matched by the current regular expression.
*
* @throws JSONParseException
*/
public final void appendYytext(StringBuilder sb) throws JSONParseException {
if (sb.length() + (zzMarkedPos - zzStartRead) > MAX_STRING_LENGTH) {
throw new JSONParseException(JSONParseException.ERROR_STRING_TOO_LONG);
}
sb.append(zzBuffer, zzStartRead, zzMarkedPos - zzStartRead);
}
private final void appendChar(StringBuilder sb, char c) throws JSONParseException {
if (sb.length() + 1 > MAX_STRING_LENGTH) {
throw new JSONParseException(JSONParseException.ERROR_STRING_TOO_LONG);
}
sb.append(c);
}
/**
* Returns the character at position <tt>pos</tt> 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 Yytoken yylex() throws java.io.IOException, JSONParseException {
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;
zzAction = -1;
zzCurrentPosL = zzMarkedPosL;
zzCurrentPos = zzMarkedPosL;
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 11: {
appendYytext(sb);
break;
}
case 25:
break;
case 4: {
sb.setLength(0);
yybegin(STRING_BEGIN);
break;
}
case 26:
break;
case 16: {
appendChar(sb, '\b');
break;
}
case 27:
break;
case 6: {
return new Yytoken(Yytoken.TYPE_RIGHT_BRACE, null);
}
case 28:
break;
case 23: {
Boolean val = Boolean.valueOf(yytext());
return new Yytoken(Yytoken.TYPE_VALUE, val);
}
case 29:
break;
case 22: {
return new Yytoken(Yytoken.TYPE_VALUE, null);
}
case 30:
break;
case 13: {
yybegin(YYINITIAL);
return new Yytoken(Yytoken.TYPE_VALUE, sb.toString());
}
case 31:
break;
case 12: {
appendChar(sb, '\\');
break;
}
case 32:
break;
case 21: {
BigDecimal val = new BigDecimal(yytext());
return new Yytoken(Yytoken.TYPE_VALUE, val);
}
case 33:
break;
case 1: {
throw new JSONParseException(yychar, JSONParseException.ERROR_UNEXPECTED_CHAR,
Character.valueOf(yycharat(0)));
}
case 34:
break;
case 8: {
return new Yytoken(Yytoken.TYPE_RIGHT_SQUARE, null);
}
case 35:
break;
case 19: {
appendChar(sb, '\r');
break;
}
case 36:
break;
case 15: {
appendChar(sb, '/');
break;
}
case 37:
break;
case 10: {
return new Yytoken(Yytoken.TYPE_COLON, null);
}
case 38:
break;
case 14: {
appendChar(sb, '"');
break;
}
case 39:
break;
case 5: {
return new Yytoken(Yytoken.TYPE_LEFT_BRACE, null);
}
case 40:
break;
case 17: {
appendChar(sb, '\f');
break;
}
case 41:
break;
case 24: {
try {
int ch = Integer.parseInt(yytext().substring(2), 16);
appendChar(sb, (char) ch);
} catch (Exception e) {
throw new JSONParseException(yychar, JSONParseException.ERROR_UNEXPECTED_EXCEPTION, e);
}
}
case 42:
break;
case 20: {
appendChar(sb, '\t');
break;
}
case 43:
break;
case 7:
return new Yytoken(Yytoken.TYPE_LEFT_SQUARE, null);
case 44:
break;
case 2: {
BigInteger val = new BigInteger(yytext());
return new Yytoken(Yytoken.TYPE_VALUE, val);
}
case 45:
break;
case 18: {
appendChar(sb, '\n');
break;
}
case 46:
break;
case 9:
return new Yytoken(Yytoken.TYPE_COMMA, null);
case 47:
break;
case 3:
break;
case 48:
break;
default:
if (zzInput == YYEOF && zzStartRead == zzCurrentPos) {
zzAtEOF = true;
return null;
} else {
zzScanError(ZZ_NO_MATCH);
}
}
}
}
}