com.groupbyinc.common.jackson.dataformat.cbor.CBORParser Maven / Gradle / Ivy
package com.fasterxml.jackson.dataformat.cbor;
import java.io.*;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.nio.charset.Charset;
import java.util.Arrays;
import com.fasterxml.jackson.core.*;
import com.fasterxml.jackson.core.base.ParserMinimalBase;
import com.fasterxml.jackson.core.io.IOContext;
import com.fasterxml.jackson.core.io.NumberInput;
import com.fasterxml.jackson.core.json.DupDetector;
import com.fasterxml.jackson.core.sym.ByteQuadsCanonicalizer;
import com.fasterxml.jackson.core.util.ByteArrayBuilder;
import com.fasterxml.jackson.core.util.TextBuffer;
public final class CBORParser extends ParserMinimalBase
{
/**
* Enumeration that defines all togglable features for CBOR generators.
*/
public enum Feature implements FormatFeature
{
// BOGUS(false)
;
final boolean _defaultState;
final int _mask;
/**
* Method that calculates bit set (flags) of all features that
* are enabled by default.
*/
public static int collectDefaults()
{
int flags = 0;
for (Feature f : values()) {
if (f.enabledByDefault()) {
flags |= f.getMask();
}
}
return flags;
}
private Feature(boolean defaultState) {
_defaultState = defaultState;
_mask = (1 << ordinal());
}
@Override public boolean enabledByDefault() { return _defaultState; }
@Override public int getMask() { return _mask; }
@Override public boolean enabledIn(int flags) { return (flags & _mask) != 0; }
}
private final static Charset UTF8 = Charset.forName("UTF-8");
private final static int[] NO_INTS = new int[0];
private final static int[] UTF8_UNIT_CODES = CBORConstants.sUtf8UnitLengths;
// Constants for handling of 16-bit "mini-floats"
private final static double MATH_POW_2_10 = Math.pow(2, 10);
private final static double MATH_POW_2_NEG14 = Math.pow(2, -14);
/*
/**********************************************************
/* Configuration
/**********************************************************
*/
/**
* Codec used for data binding when (if) requested.
*/
protected ObjectCodec _objectCodec;
/*
/**********************************************************
/* Generic I/O state
/**********************************************************
*/
/**
* I/O context for this reader. It handles buffer allocation
* for the reader.
*/
final protected IOContext _ioContext;
/**
* Flag that indicates whether parser is closed or not. Gets
* set when parser is either closed by explicit call
* ({@link #close}) or when end-of-input is reached.
*/
protected boolean _closed;
/*
/**********************************************************
/* Current input data
/**********************************************************
*/
// Note: type of actual buffer depends on sub-class, can't include
/**
* Pointer to next available character in buffer
*/
protected int _inputPtr = 0;
/**
* Index of character after last available one in the buffer.
*/
protected int _inputEnd = 0;
/*
/**********************************************************
/* Current input location information
/**********************************************************
*/
/**
* Number of characters/bytes that were contained in previous blocks
* (blocks that were already processed prior to the current buffer).
*/
protected long _currInputProcessed = 0L;
/**
* Current row location of current point in input buffer, starting
* from 1, if available.
*/
protected int _currInputRow = 1;
/**
* Current index of the first character of the current row in input
* buffer. Needed to calculate column position, if necessary; benefit
* of not having column itself is that this only has to be updated
* once per line.
*/
protected int _currInputRowStart = 0;
/*
/**********************************************************
/* Information about starting location of event
/* Reader is pointing to; updated on-demand
/**********************************************************
*/
// // // Location info at point when current token was started
/**
* Total number of bytes/characters read before start of current token.
* For big (gigabyte-sized) sizes are possible, needs to be long,
* unlike pointers and sizes related to in-memory buffers.
*/
protected long _tokenInputTotal = 0;
/**
* Input row on which current token starts, 1-based
*/
protected int _tokenInputRow = 1;
/**
* Column on input row that current token starts; 0-based (although
* in the end it'll be converted to 1-based)
*/
protected int _tokenInputCol = 0;
/*
/**********************************************************
/* Parsing state
/**********************************************************
*/
/**
* Information about parser context, context in which
* the next token is to be parsed (root, array, object).
*/
protected CBORReadContext _parsingContext;
/**
* Buffer that contains contents of String values, including
* field names if necessary (name split across boundary,
* contains escape sequence, or access needed to char array)
*/
protected final TextBuffer _textBuffer;
/**
* Temporary buffer that is needed if field name is accessed
* using {@link #getTextCharacters} method (instead of String
* returning alternatives)
*/
protected char[] _nameCopyBuffer = null;
/**
* Flag set to indicate whether the field name is available
* from the name copy buffer or not (in addition to its String
* representation being available via read context)
*/
protected boolean _nameCopied = false;
/**
* ByteArrayBuilder is needed if 'getBinaryValue' is called. If so,
* we better reuse it for remainder of content.
*/
protected ByteArrayBuilder _byteArrayBuilder = null;
/**
* We will hold on to decoded binary data, for duration of
* current event, so that multiple calls to
* {@link #getBinaryValue} will not need to decode data more
* than once.
*/
protected byte[] _binaryValue;
/**
* We will keep track of tag value for possible future use.
*/
protected int _tagValue = -1;
/*
/**********************************************************
/* Input source config, state (from ex StreamBasedParserBase)
/**********************************************************
*/
/**
* Input stream that can be used for reading more content, if one
* in use. May be null, if input comes just as a full buffer,
* or if the stream has been closed.
*/
protected InputStream _inputStream;
/**
* Current buffer from which data is read; generally data is read into
* buffer from input source, but in some cases pre-loaded buffer
* is handed to the parser.
*/
protected byte[] _inputBuffer;
/**
* Flag that indicates whether the input buffer is recycable (and
* needs to be returned to recycler once we are done) or not.
*
* If it is not, it also means that parser can NOT modify underlying
* buffer.
*/
protected boolean _bufferRecyclable;
/*
/**********************************************************
/* Additional parsing state
/**********************************************************
*/
/**
* Flag that indicates that the current token has not yet
* been fully processed, and needs to be finished for
* some access (or skipped to obtain the next token)
*/
protected boolean _tokenIncomplete = false;
/**
* Type byte of the current token
*/
protected int _typeByte;
/**
* Helper variables used when dealing with chunked content.
*/
private int _chunkLeft, _chunkEnd;
/*
/**********************************************************
/* Symbol handling, decoding
/**********************************************************
*/
/**
* Symbol table that contains field names encountered so far
*/
final protected ByteQuadsCanonicalizer _symbols;
/**
* Temporary buffer used for name parsing.
*/
protected int[] _quadBuffer = NO_INTS;
/**
* Quads used for hash calculation
*/
protected int _quad1, _quad2, _quad3;
/*
/**********************************************************
/* Constants and fields of former 'JsonNumericParserBase'
/**********************************************************
*/
final protected static int NR_UNKNOWN = 0;
// First, integer types
final protected static int NR_INT = 0x0001;
final protected static int NR_LONG = 0x0002;
final protected static int NR_BIGINT = 0x0004;
// And then floating point types
final protected static int NR_DOUBLE = 0x008;
final protected static int NR_BIGDECIMAL = 0x0010;
// Also, we need some numeric constants
final static BigInteger BI_MIN_INT = BigInteger.valueOf(Integer.MIN_VALUE);
final static BigInteger BI_MAX_INT = BigInteger.valueOf(Integer.MAX_VALUE);
final static BigInteger BI_MIN_LONG = BigInteger.valueOf(Long.MIN_VALUE);
final static BigInteger BI_MAX_LONG = BigInteger.valueOf(Long.MAX_VALUE);
final static BigDecimal BD_MIN_LONG = new BigDecimal(BI_MIN_LONG);
final static BigDecimal BD_MAX_LONG = new BigDecimal(BI_MAX_LONG);
final static BigDecimal BD_MIN_INT = new BigDecimal(BI_MIN_INT);
final static BigDecimal BD_MAX_INT = new BigDecimal(BI_MAX_INT);
final static long MIN_INT_L = (long) Integer.MIN_VALUE;
final static long MAX_INT_L = (long) Integer.MAX_VALUE;
// These are not very accurate, but have to do... (for bounds checks)
final static double MIN_LONG_D = (double) Long.MIN_VALUE;
final static double MAX_LONG_D = (double) Long.MAX_VALUE;
final static double MIN_INT_D = (double) Integer.MIN_VALUE;
final static double MAX_INT_D = (double) Integer.MAX_VALUE;
// Digits, numeric
final protected static int INT_0 = '0';
final protected static int INT_9 = '9';
final protected static int INT_MINUS = '-';
final protected static int INT_PLUS = '+';
final protected static char CHAR_NULL = '\0';
// Numeric value holders: multiple fields used for
// for efficiency
/**
* Bitfield that indicates which numeric representations
* have been calculated for the current type
*/
protected int _numTypesValid = NR_UNKNOWN;
// First primitives
protected int _numberInt;
protected long _numberLong;
protected double _numberDouble;
// And then object types
protected BigInteger _numberBigInt;
protected BigDecimal _numberBigDecimal;
/*
/**********************************************************
/* Life-cycle
/**********************************************************
*/
public CBORParser(IOContext ctxt, int parserFeatures, int cborFeatures,
ObjectCodec codec, ByteQuadsCanonicalizer sym,
InputStream in, byte[] inputBuffer, int start, int end,
boolean bufferRecyclable)
{
super(parserFeatures);
_ioContext = ctxt;
_objectCodec = codec;
_symbols = sym;
_inputStream = in;
_inputBuffer = inputBuffer;
_inputPtr = start;
_inputEnd = end;
_bufferRecyclable = bufferRecyclable;
_textBuffer = ctxt.constructTextBuffer();
DupDetector dups = JsonParser.Feature.STRICT_DUPLICATE_DETECTION.enabledIn(parserFeatures)
? DupDetector.rootDetector(this) : null;
_parsingContext = CBORReadContext.createRootContext(dups);
_tokenInputRow = -1;
_tokenInputCol = -1;
}
@Override
public ObjectCodec getCodec() {
return _objectCodec;
}
@Override
public void setCodec(ObjectCodec c) {
_objectCodec = c;
}
/*
/**********************************************************
/* Versioned
/**********************************************************
*/
@Override
public Version version() {
return PackageVersion.VERSION;
}
/*
/**********************************************************
/* Configuration
/**********************************************************
*/
// public JsonParser overrideStdFeatures(int values, int mask)
@Override
public int getFormatFeatures() {
// No parser features, yet
return 0;
}
//public JsonParser overrideFormatFeatures(int values, int mask) {
/*
/**********************************************************
/* Extended API
/**********************************************************
*/
/**
* Method that can be used to access tag id associated with
* the most recently decoded value (whether completely, for
* scalar values, or partially, for Objects/Arrays), if any.
* If no tag was associated with it, -1 is returned.
*
* @since 2.5
*/
public int getCurrentTag() {
return _tagValue;
}
/*
/**********************************************************
/* Abstract impls
/**********************************************************
*/
@Override
public int releaseBuffered(OutputStream out) throws IOException
{
int count = _inputEnd - _inputPtr;
if (count < 1) {
return 0;
}
// let's just advance ptr to end
int origPtr = _inputPtr;
out.write(_inputBuffer, origPtr, count);
return count;
}
@Override
public Object getInputSource() {
return _inputStream;
}
/**
* Overridden since we do not really have character-based locations,
* but we do have byte offset to specify.
*/
@Override
public JsonLocation getTokenLocation()
{
// token location is correctly managed...
return new JsonLocation(_ioContext.getSourceReference(),
_tokenInputTotal, // bytes
-1, -1, (int) _tokenInputTotal); // char offset, line, column
}
/**
* Overridden since we do not really have character-based locations,
* but we do have byte offset to specify.
*/
@Override
public JsonLocation getCurrentLocation()
{
final long offset = _currInputProcessed + _inputPtr;
return new JsonLocation(_ioContext.getSourceReference(),
offset, // bytes
-1, -1, (int) offset); // char offset, line, column
}
/**
* Method that can be called to get the name associated with
* the current event.
*/
@Override
public String getCurrentName() throws IOException
{
// [JACKSON-395]: start markers require information from parent
if (_currToken == JsonToken.START_OBJECT || _currToken == JsonToken.START_ARRAY) {
CBORReadContext parent = _parsingContext.getParent();
return parent.getCurrentName();
}
return _parsingContext.getCurrentName();
}
@Override
public void overrideCurrentName(String name)
{
// Simple, but need to look for START_OBJECT/ARRAY's "off-by-one" thing:
CBORReadContext ctxt = _parsingContext;
if (_currToken == JsonToken.START_OBJECT || _currToken == JsonToken.START_ARRAY) {
ctxt = ctxt.getParent();
}
// Unfortunate, but since we did not expose exceptions, need to wrap
try {
ctxt.setCurrentName(name);
} catch (IOException e) {
throw new IllegalStateException(e);
}
}
@Override
public void close() throws IOException {
if (!_closed) {
_closed = true;
_symbols.release();
try {
_closeInput();
} finally {
// as per [JACKSON-324], do in finally block
// Also, internal buffer(s) can now be released as well
_releaseBuffers();
}
}
}
@Override
public boolean isClosed() { return _closed; }
@Override
public CBORReadContext getParsingContext() {
return _parsingContext;
}
/*
/**********************************************************
/* Overridden methods
/**********************************************************
*/
@Override
public boolean hasTextCharacters()
{
if (_currToken == JsonToken.VALUE_STRING) {
// yes; is or can be made available efficiently as char[]
return _textBuffer.hasTextAsCharacters();
}
if (_currToken == JsonToken.FIELD_NAME) {
// not necessarily; possible but:
return _nameCopied;
}
// other types, no benefit from accessing as char[]
return false;
}
/**
* Method called to release internal buffers owned by the base
* reader. This may be called along with {@link #_closeInput} (for
* example, when explicitly closing this reader instance), or
* separately (if need be).
*/
protected void _releaseBuffers() throws IOException
{
if (_bufferRecyclable) {
byte[] buf = _inputBuffer;
if (buf != null) {
_inputBuffer = null;
_ioContext.releaseReadIOBuffer(buf);
}
}
_textBuffer.releaseBuffers();
char[] buf = _nameCopyBuffer;
if (buf != null) {
_nameCopyBuffer = null;
_ioContext.releaseNameCopyBuffer(buf);
}
}
/*
/**********************************************************
/* JsonParser impl
/**********************************************************
*/
@Override
public JsonToken nextToken() throws IOException
{
_numTypesValid = NR_UNKNOWN;
// For longer tokens (text, binary), we'll only read when requested
if (_tokenIncomplete) {
_skipIncomplete();
}
_tokenInputTotal = _currInputProcessed + _inputPtr;
// also: clear any data retained so far
_binaryValue = null;
/* First: need to keep track of lengths of defined-length Arrays and
* Objects (to materialize END_ARRAY/END_OBJECT as necessary);
* as well as handle names for Object entries.
*/
if (_parsingContext.inObject()) {
if (_currToken != JsonToken.FIELD_NAME) {
_tagValue = -1;
// completed the whole Object?
if (!_parsingContext.expectMoreValues()) {
_parsingContext = _parsingContext.getParent();
return (_currToken = JsonToken.END_OBJECT);
}
return (_currToken = _decodeFieldName());
}
} else {
if (!_parsingContext.expectMoreValues()) {
_tagValue = -1;
_parsingContext = _parsingContext.getParent();
return (_currToken = JsonToken.END_ARRAY);
}
}
if (_inputPtr >= _inputEnd) {
if (!loadMore()) {
return _handleCBOREOF();
}
}
int ch = _inputBuffer[_inputPtr++];
int type = (ch >> 5) & 0x7;
// One special case: need to consider tag as prefix first:
if (type == 6) {
_tagValue = Integer.valueOf(_decodeTag(ch & 0x1F));
if (_inputPtr >= _inputEnd) {
if (!loadMore()) {
return _handleCBOREOF();
}
}
ch = _inputBuffer[_inputPtr++];
type = (ch >> 5) & 0x7;
} else {
_tagValue = -1;
}
final int lowBits = ch & 0x1F;
switch (type) {
case 0: // positive int
_numTypesValid = NR_INT;
if (lowBits <= 23) {
_numberInt = lowBits;
} else {
switch (lowBits - 24) {
case 0:
_numberInt = _decode8Bits();
break;
case 1:
_numberInt = _decode16Bits();
break;
case 2:
_numberInt = _decode32Bits();
break;
case 3:
_numberLong = _decode64Bits();
_numTypesValid = NR_LONG;
break;
default:
_invalidToken(ch);
}
}
return (_currToken = JsonToken.VALUE_NUMBER_INT);
case 1: // negative int
_numTypesValid = NR_INT;
if (lowBits <= 23) {
_numberInt = -lowBits - 1;
} else {
switch (lowBits - 24) {
case 0:
_numberInt = -_decode8Bits() - 1;
break;
case 1:
_numberInt = -_decode16Bits() - 1;
break;
case 2:
_numberInt = -_decode32Bits() - 1;
break;
case 3:
_numberLong = -_decode64Bits() - 1L;
_numTypesValid = NR_LONG;
break;
default:
_invalidToken(ch);
}
}
return (_currToken = JsonToken.VALUE_NUMBER_INT);
case 2: // byte[]
_typeByte = ch;
_tokenIncomplete = true;
return (_currToken = JsonToken.VALUE_EMBEDDED_OBJECT);
case 3: // String
_typeByte = ch;
_tokenIncomplete = true;
return (_currToken = JsonToken.VALUE_STRING);
case 4: // Array
_currToken = JsonToken.START_ARRAY;
{
int len = _decodeExplicitLength(lowBits);
_parsingContext = _parsingContext.createChildArrayContext(len);
}
return _currToken;
case 5: // Object
_currToken = JsonToken.START_OBJECT;
{
int len = _decodeExplicitLength(lowBits);
_parsingContext = _parsingContext.createChildObjectContext(len);
}
return _currToken;
case 6: // another tag; not allowed
_reportError("Multiple tags not allowed per value (first tag: "+_tagValue+")");
default: // misc: tokens, floats
switch (lowBits) {
case 20:
return (_currToken = JsonToken.VALUE_FALSE);
case 21:
return (_currToken = JsonToken.VALUE_TRUE);
case 22:
return (_currToken = JsonToken.VALUE_NULL);
case 25: // 16-bit float...
// As per [http://stackoverflow.com/questions/5678432/decompressing-half-precision-floats-in-javascript]
{
float f = (float) _decodeHalfSizeFloat();
_numberDouble = (double) f;
_numTypesValid = NR_DOUBLE;
}
return (_currToken = JsonToken.VALUE_NUMBER_FLOAT);
case 26: // Float32
{
float f = Float.intBitsToFloat(_decode32Bits());
_numberDouble = (double) f;
_numTypesValid = NR_DOUBLE;
}
return (_currToken = JsonToken.VALUE_NUMBER_FLOAT);
case 27: // Float64
_numberDouble = Double.longBitsToDouble(_decode64Bits());
_numTypesValid = NR_DOUBLE;
return (_currToken = JsonToken.VALUE_NUMBER_FLOAT);
case 31: // Break
if (_parsingContext.inArray()) {
if (!_parsingContext.hasExpectedLength()) {
_parsingContext = _parsingContext.getParent();
return (_currToken = JsonToken.END_ARRAY);
}
}
// Object end-marker can't occur here
_reportUnexpectedBreak();
}
_invalidToken(ch);
}
return null;
}
protected JsonToken _handleCBOREOF() throws IOException {
/* NOTE: here we can and should close input, release buffers,
* since this is "hard" EOF, not a boundary imposed by
* header token.
*/
_tagValue = -1;
close();
return (_currToken = null);
}
protected String _numberToName(int ch, boolean neg) throws IOException
{
final int lowBits = ch & 0x1F;
int i;
if (lowBits <= 23) {
i = lowBits;
} else {
switch (lowBits) {
case 24:
i = _decode8Bits();
break;
case 25:
i = _decode16Bits();
break;
case 26:
i = _decode32Bits();
break;
case 27:
{
long l = _decode64Bits();
if (neg) {
l = -l - 1L;
}
return String.valueOf(l);
}
default:
throw _constructError("Invalid length indicator for ints ("+lowBits+"), token 0x"+Integer.toHexString(ch));
}
}
if (neg) {
i = -i - 1;
}
return String.valueOf(1);
}
// base impl is fine:
//public String getCurrentName() throws IOException
protected void _invalidToken(int ch) throws JsonParseException {
ch &= 0xFF;
if (ch == 0xFF) {
throw _constructError("Mismatched BREAK byte (0xFF): encountered where value expected");
}
throw _constructError("Invalid CBOR value token (first byte): 0x"+Integer.toHexString(ch));
}
/*
/**********************************************************
/* Public API, traversal, nextXxxValue/nextFieldName
/**********************************************************
*/
@Override
public boolean nextFieldName(SerializableString str) throws IOException
{
// Two parsing modes; can only succeed if expecting field name, so handle that first:
if (_parsingContext.inObject() && _currToken != JsonToken.FIELD_NAME) {
_numTypesValid = NR_UNKNOWN;
if (_tokenIncomplete) {
_skipIncomplete();
}
_tokenInputTotal = _currInputProcessed + _inputPtr;
_binaryValue = null;
_tagValue = -1;
// completed the whole Object?
if (!_parsingContext.expectMoreValues()) {
_parsingContext = _parsingContext.getParent();
_currToken = JsonToken.END_OBJECT;
return false;
}
byte[] nameBytes = str.asQuotedUTF8();
final int byteLen = nameBytes.length;
// fine; require room for up to 2-byte marker, data itself
int ptr = _inputPtr;
if ((ptr + byteLen + 1) < _inputEnd) {
final int ch = _inputBuffer[ptr++];
// only handle usual textual type
if (((ch >> 5) & 0x7) == CBORConstants.MAJOR_TYPE_TEXT) {
int lenMarker = ch & 0x1F;
if (lenMarker <= 24) {
if (lenMarker == 23) {
lenMarker = _inputBuffer[ptr++] & 0xFF;
}
if (lenMarker == byteLen) {
int i = 0;
while (true) {
if (i == lenMarker) {
_inputPtr = ptr+i;
_parsingContext.setCurrentName(str.getValue());
_currToken = JsonToken.FIELD_NAME;
return true;
}
if (nameBytes[i] != _inputBuffer[ptr+i]) {
break;
}
++i;
}
}
}
}
}
}
// otherwise just fall back to default handling; should occur rarely
return (nextToken() == JsonToken.FIELD_NAME) && str.getValue().equals(getCurrentName());
}
@Override
public String nextFieldName() throws IOException
{
if (_parsingContext.inObject() && _currToken != JsonToken.FIELD_NAME) {
_numTypesValid = NR_UNKNOWN;
if (_tokenIncomplete) {
_skipIncomplete();
}
_tokenInputTotal = _currInputProcessed + _inputPtr;
_binaryValue = null;
_tagValue = -1;
// completed the whole Object?
if (!_parsingContext.expectMoreValues()) {
_parsingContext = _parsingContext.getParent();
_currToken = JsonToken.END_OBJECT;
return null;
}
// inlined "_decodeFieldName()"
if (_inputPtr >= _inputEnd) {
loadMoreGuaranteed();
}
final int ch = _inputBuffer[_inputPtr++];
final int type = ((ch >> 5) & 0x7);
// offline non-String cases, as they are expected to be rare
if (type != CBORConstants.MAJOR_TYPE_TEXT) {
if (ch == -1) { // end-of-object, common
if (!_parsingContext.hasExpectedLength()) {
_parsingContext = _parsingContext.getParent();
_currToken = JsonToken.END_OBJECT;
return null;
}
_reportUnexpectedBreak();
}
_decodeNonStringName(ch);
_currToken = JsonToken.FIELD_NAME;
return getText();
}
final int lenMarker = ch & 0x1F;
String name;
if (lenMarker <= 23) {
if (lenMarker == 0) {
name = "";
} else {
name = _findDecodedFromSymbols(lenMarker);
if (name != null) {
_inputPtr += lenMarker;
} else {
name = _decodeShortName(lenMarker);
name = _addDecodedToSymbols(lenMarker, name);
}
}
} else {
final int actualLen = _decodeExplicitLength(lenMarker);
if (actualLen < 0) {
name = _decodeChunkedName();
} else {
name = _decodeLongerName(actualLen);
}
}
_parsingContext.setCurrentName(name);
_currToken = JsonToken.FIELD_NAME;
return name;
}
// otherwise just fall back to default handling; should occur rarely
return (nextToken() == JsonToken.FIELD_NAME) ? getCurrentName() : null;
}
@Override
public String nextTextValue() throws IOException
{
_numTypesValid = NR_UNKNOWN;
if (_tokenIncomplete) {
_skipIncomplete();
}
_tokenInputTotal = _currInputProcessed + _inputPtr;
_binaryValue = null;
_tagValue = -1;
if (_parsingContext.inObject()) {
if (_currToken != JsonToken.FIELD_NAME) {
_tagValue = -1;
// completed the whole Object?
if (!_parsingContext.expectMoreValues()) {
_parsingContext = _parsingContext.getParent();
_currToken = JsonToken.END_OBJECT;
return null;
}
_currToken = _decodeFieldName();
return null;
}
} else {
if (!_parsingContext.expectMoreValues()) {
_tagValue = -1;
_parsingContext = _parsingContext.getParent();
_currToken = JsonToken.END_ARRAY;
return null;
}
}
if (_inputPtr >= _inputEnd) {
if (!loadMore()) {
_handleCBOREOF();
return null;
}
}
int ch = _inputBuffer[_inputPtr++];
int type = (ch >> 5) & 0x7;
// One special case: need to consider tag as prefix first:
if (type == 6) {
_tagValue = Integer.valueOf(_decodeTag(ch & 0x1F));
if (_inputPtr >= _inputEnd) {
if (!loadMore()) {
_handleCBOREOF();
return null;
}
}
ch = _inputBuffer[_inputPtr++];
type = (ch >> 5) & 0x7;
} else {
_tagValue = -1;
}
final int lowBits = ch & 0x1F;
switch (type) {
case 0: // positive int
_numTypesValid = NR_INT;
if (lowBits <= 23) {
_numberInt = lowBits;
} else {
switch (lowBits - 24) {
case 0:
_numberInt = _decode8Bits();
break;
case 1:
_numberInt = _decode16Bits();
break;
case 2:
_numberInt = _decode32Bits();
break;
case 3:
_numberLong = _decode64Bits();
_numTypesValid = NR_LONG;
break;
default:
_invalidToken(ch);
}
}
_currToken = JsonToken.VALUE_NUMBER_INT;
return null;
case 1: // negative int
_numTypesValid = NR_INT;
if (lowBits <= 23) {
_numberInt = -lowBits - 1;
} else {
switch (lowBits - 24) {
case 0:
_numberInt = -_decode8Bits() - 1;
break;
case 1:
_numberInt = -_decode16Bits() - 1;
break;
case 2:
_numberInt = -_decode32Bits() - 1;
break;
case 3:
_numberLong = -_decode64Bits() - 1L;
_numTypesValid = NR_LONG;
break;
default:
_invalidToken(ch);
}
}
_currToken = JsonToken.VALUE_NUMBER_INT;
return null;
case 2: // byte[]
_typeByte = ch;
_tokenIncomplete = true;
_currToken = JsonToken.VALUE_EMBEDDED_OBJECT;
return null;
case 3: // String
_typeByte = ch;
_tokenIncomplete = true;
_currToken = JsonToken.VALUE_STRING;
return _finishTextToken(ch);
case 4: // Array
_currToken = JsonToken.START_ARRAY;
{
int len = _decodeExplicitLength(lowBits);
_parsingContext = _parsingContext.createChildArrayContext(len);
}
return null;
case 5: // Object
_currToken = JsonToken.START_OBJECT;
{
int len = _decodeExplicitLength(lowBits);
_parsingContext = _parsingContext.createChildObjectContext(len);
}
return null;
case 6: // another tag; not allowed
_reportError("Multiple tags not allowed per value (first tag: "+_tagValue+")");
default: // misc: tokens, floats
switch (lowBits) {
case 20:
_currToken = JsonToken.VALUE_FALSE;
return null;
case 21:
_currToken = JsonToken.VALUE_TRUE;
return null;
case 22:
_currToken = JsonToken.VALUE_NULL;
return null;
case 25: // 16-bit float...
// As per [http://stackoverflow.com/questions/5678432/decompressing-half-precision-floats-in-javascript]
{
float f = (float) _decodeHalfSizeFloat();
_numberDouble = (double) f;
_numTypesValid = NR_DOUBLE;
}
_currToken = JsonToken.VALUE_NUMBER_FLOAT;
return null;
case 26: // Float32
{
float f = Float.intBitsToFloat(_decode32Bits());
_numberDouble = (double) f;
_numTypesValid = NR_DOUBLE;
}
_currToken = JsonToken.VALUE_NUMBER_FLOAT;
return null;
case 27: // Float64
_numberDouble = Double.longBitsToDouble(_decode64Bits());
_numTypesValid = NR_DOUBLE;
_currToken = JsonToken.VALUE_NUMBER_FLOAT;
return null;
case 31: // Break
if (_parsingContext.inArray()) {
if (!_parsingContext.hasExpectedLength()) {
_parsingContext = _parsingContext.getParent();
_currToken = JsonToken.END_ARRAY;
return null;
}
}
// Object end-marker can't occur here
_reportUnexpectedBreak();
}
_invalidToken(ch);
}
// otherwise fall back to generic handling:
return (nextToken() == JsonToken.VALUE_STRING) ? getText() : null;
}
@Override
public int nextIntValue(int defaultValue) throws IOException
{
if (nextToken() == JsonToken.VALUE_NUMBER_INT) {
return getIntValue();
}
return defaultValue;
}
@Override
public long nextLongValue(long defaultValue) throws IOException
{
if (nextToken() == JsonToken.VALUE_NUMBER_INT) {
return getLongValue();
}
return defaultValue;
}
@Override
public Boolean nextBooleanValue() throws IOException
{
switch (nextToken()) {
case VALUE_TRUE:
return Boolean.TRUE;
case VALUE_FALSE:
return Boolean.FALSE;
default:
return null;
}
}
/*
/**********************************************************
/* Public API, access to token information, text
/**********************************************************
*/
/**
* Method for accessing textual representation of the current event;
* if no current event (before first call to {@link #nextToken}, or
* after encountering end-of-input), returns null.
* Method can be called for any event.
*/
@Override
public String getText() throws IOException
{
JsonToken t = _currToken;
if (_tokenIncomplete) {
if (t == JsonToken.VALUE_STRING) {
return _finishTextToken(_typeByte);
}
}
if (t == JsonToken.VALUE_STRING) {
return _textBuffer.contentsAsString();
}
if (t == null) { // null only before/after document
return null;
}
if (t == JsonToken.FIELD_NAME) {
return _parsingContext.getCurrentName();
}
if (t.isNumeric()) {
return getNumberValue().toString();
}
return _currToken.asString();
}
@Override
public char[] getTextCharacters() throws IOException
{
if (_currToken != null) { // null only before/after document
if (_tokenIncomplete) {
_finishToken();
}
switch (_currToken) {
case VALUE_STRING:
return _textBuffer.getTextBuffer();
case FIELD_NAME:
return _parsingContext.getCurrentName().toCharArray();
// fall through
case VALUE_NUMBER_INT:
case VALUE_NUMBER_FLOAT:
return getNumberValue().toString().toCharArray();
default:
return _currToken.asCharArray();
}
}
return null;
}
@Override
public int getTextLength() throws IOException
{
if (_currToken != null) { // null only before/after document
if (_tokenIncomplete) {
_finishToken();
}
switch (_currToken) {
case VALUE_STRING:
return _textBuffer.size();
case FIELD_NAME:
return _parsingContext.getCurrentName().length();
// fall through
case VALUE_NUMBER_INT:
case VALUE_NUMBER_FLOAT:
return getNumberValue().toString().length();
default:
return _currToken.asCharArray().length;
}
}
return 0;
}
@Override
public int getTextOffset() throws IOException {
return 0;
}
@Override
public String getValueAsString() throws IOException
{
// inlined 'getText()' for common case of having String
if (_tokenIncomplete) {
if (_currToken == JsonToken.VALUE_STRING) {
return _finishTextToken(_typeByte);
}
}
if (_currToken == JsonToken.VALUE_STRING) {
return _textBuffer.contentsAsString();
}
if (_currToken == null || _currToken == JsonToken.VALUE_NULL || !_currToken.isScalarValue()) {
return null;
}
return getText();
}
@Override
public String getValueAsString(String defaultValue) throws IOException
{
if (_currToken != JsonToken.VALUE_STRING) {
if (_currToken == null || _currToken == JsonToken.VALUE_NULL || !_currToken.isScalarValue()) {
return defaultValue;
}
}
return getText();
}
/*
/**********************************************************
/* Public API, access to token information, binary
/**********************************************************
*/
@Override
public byte[] getBinaryValue(Base64Variant b64variant) throws IOException
{
if (_tokenIncomplete) {
_finishToken();
}
if (_currToken != JsonToken.VALUE_EMBEDDED_OBJECT ) {
// TODO, maybe: support base64 for text?
_reportError("Current token ("+getCurrentToken()+") not VALUE_EMBEDDED_OBJECT, can not access as binary");
}
return _binaryValue;
}
@Override
public Object getEmbeddedObject() throws IOException
{
if (_tokenIncomplete) {
_finishToken();
}
if (_currToken == JsonToken.VALUE_EMBEDDED_OBJECT ) {
return _binaryValue;
}
return null;
}
@Override
public int readBinaryValue(Base64Variant b64variant, OutputStream out) throws IOException
{
if (_currToken != JsonToken.VALUE_EMBEDDED_OBJECT ) {
// Todo, maybe: support base64 for text?
_reportError("Current token ("+getCurrentToken()+") not VALUE_EMBEDDED_OBJECT, can not access as binary");
}
if (!_tokenIncomplete) { // someone already decoded or read
if (_binaryValue == null) { // if this method called twice in a row
return 0;
}
final int len = _binaryValue.length;
out.write(_binaryValue, 0, len);
return len;
}
_tokenIncomplete = false;
int len = _decodeExplicitLength(_typeByte & 0x1F);
if (len >= 0) { // non-chunked
return _readAndWriteBytes(out, len);
}
// Chunked...
int total = 0;
while (true) {
len = _decodeChunkLength(CBORConstants.MAJOR_TYPE_BYTES);
if (len < 0) {
return total;
}
total += _readAndWriteBytes(out, len);
}
}
private int _readAndWriteBytes(OutputStream out, int total) throws IOException
{
int left = total;
while (left > 0) {
int avail = _inputEnd - _inputPtr;
if (_inputPtr >= _inputEnd) {
loadMoreGuaranteed();
avail = _inputEnd - _inputPtr;
}
int count = Math.min(avail, left);
out.write(_inputBuffer, _inputPtr, count);
_inputPtr += count;
left -= count;
}
_tokenIncomplete = false;
return total;
}
/*
/**********************************************************
/* Numeric accessors of public API
/**********************************************************
*/
@Override
public Number getNumberValue() throws IOException
{
if (_numTypesValid == NR_UNKNOWN) {
_checkNumericValue(NR_UNKNOWN); // will also check event type
}
// Separate types for int types
if (_currToken == JsonToken.VALUE_NUMBER_INT) {
if ((_numTypesValid & NR_INT) != 0) {
return _numberInt;
}
if ((_numTypesValid & NR_LONG) != 0) {
return _numberLong;
}
if ((_numTypesValid & NR_BIGINT) != 0) {
return _numberBigInt;
}
// Shouldn't get this far but if we do
return _numberBigDecimal;
}
/* And then floating point types. But here optimal type
* needs to be big decimal, to avoid losing any data?
*/
if ((_numTypesValid & NR_BIGDECIMAL) != 0) {
return _numberBigDecimal;
}
if ((_numTypesValid & NR_DOUBLE) == 0) { // sanity check
_throwInternal();
}
return _numberDouble;
}
@Override
public NumberType getNumberType() throws IOException
{
if (_numTypesValid == NR_UNKNOWN) {
_checkNumericValue(NR_UNKNOWN); // will also check event type
}
if (_currToken == JsonToken.VALUE_NUMBER_INT) {
if ((_numTypesValid & NR_INT) != 0) {
return NumberType.INT;
}
if ((_numTypesValid & NR_LONG) != 0) {
return NumberType.LONG;
}
return NumberType.BIG_INTEGER;
}
/* And then floating point types. Here optimal type
* needs to be big decimal, to avoid losing any data?
* However... using BD is slow, so let's allow returning
* double as type if no explicit call has been made to access
* data as BD?
*/
if ((_numTypesValid & NR_BIGDECIMAL) != 0) {
return NumberType.BIG_DECIMAL;
}
return NumberType.DOUBLE;
}
@Override
public int getIntValue() throws IOException
{
if ((_numTypesValid & NR_INT) == 0) {
if (_numTypesValid == NR_UNKNOWN) { // not parsed at all
_checkNumericValue(NR_INT); // will also check event type
}
if ((_numTypesValid & NR_INT) == 0) { // wasn't an int natively?
convertNumberToInt(); // let's make it so, if possible
}
}
return _numberInt;
}
@Override
public long getLongValue() throws IOException
{
if ((_numTypesValid & NR_LONG) == 0) {
if (_numTypesValid == NR_UNKNOWN) {
_checkNumericValue(NR_LONG);
}
if ((_numTypesValid & NR_LONG) == 0) {
convertNumberToLong();
}
}
return _numberLong;
}
@Override
public BigInteger getBigIntegerValue() throws IOException
{
if ((_numTypesValid & NR_BIGINT) == 0) {
if (_numTypesValid == NR_UNKNOWN) {
_checkNumericValue(NR_BIGINT);
}
if ((_numTypesValid & NR_BIGINT) == 0) {
convertNumberToBigInteger();
}
}
return _numberBigInt;
}
@Override
public float getFloatValue() throws IOException
{
double value = getDoubleValue();
/* 22-Jan-2009, tatu: Bounds/range checks would be tricky
* here, so let's not bother even trying...
*/
/*
if (value < -Float.MAX_VALUE || value > MAX_FLOAT_D) {
_reportError("Numeric value ("+getText()+") out of range of Java float");
}
*/
return (float) value;
}
@Override
public double getDoubleValue() throws IOException
{
if ((_numTypesValid & NR_DOUBLE) == 0) {
if (_numTypesValid == NR_UNKNOWN) {
_checkNumericValue(NR_DOUBLE);
}
if ((_numTypesValid & NR_DOUBLE) == 0) {
convertNumberToDouble();
}
}
return _numberDouble;
}
@Override
public BigDecimal getDecimalValue() throws IOException
{
if ((_numTypesValid & NR_BIGDECIMAL) == 0) {
if (_numTypesValid == NR_UNKNOWN) {
_checkNumericValue(NR_BIGDECIMAL);
}
if ((_numTypesValid & NR_BIGDECIMAL) == 0) {
convertNumberToBigDecimal();
}
}
return _numberBigDecimal;
}
/*
/**********************************************************
/* Numeric conversions
/**********************************************************
*/
protected void _checkNumericValue(int expType) throws IOException
{
// Int or float?
if (_currToken == JsonToken.VALUE_NUMBER_INT || _currToken == JsonToken.VALUE_NUMBER_FLOAT) {
return;
}
_reportError("Current token ("+getCurrentToken()+") not numeric, can not use numeric value accessors");
}
protected void convertNumberToInt() throws IOException
{
// First, converting from long ought to be easy
if ((_numTypesValid & NR_LONG) != 0) {
// Let's verify it's lossless conversion by simple roundtrip
int result = (int) _numberLong;
if (((long) result) != _numberLong) {
_reportError("Numeric value ("+getText()+") out of range of int");
}
_numberInt = result;
} else if ((_numTypesValid & NR_BIGINT) != 0) {
if (BI_MIN_INT.compareTo(_numberBigInt) > 0
|| BI_MAX_INT.compareTo(_numberBigInt) < 0) {
reportOverflowInt();
}
_numberInt = _numberBigInt.intValue();
} else if ((_numTypesValid & NR_DOUBLE) != 0) {
// Need to check boundaries
if (_numberDouble < MIN_INT_D || _numberDouble > MAX_INT_D) {
reportOverflowInt();
}
_numberInt = (int) _numberDouble;
} else if ((_numTypesValid & NR_BIGDECIMAL) != 0) {
if (BD_MIN_INT.compareTo(_numberBigDecimal) > 0
|| BD_MAX_INT.compareTo(_numberBigDecimal) < 0) {
reportOverflowInt();
}
_numberInt = _numberBigDecimal.intValue();
} else {
_throwInternal();
}
_numTypesValid |= NR_INT;
}
protected void convertNumberToLong() throws IOException
{
if ((_numTypesValid & NR_INT) != 0) {
_numberLong = (long) _numberInt;
} else if ((_numTypesValid & NR_BIGINT) != 0) {
if (BI_MIN_LONG.compareTo(_numberBigInt) > 0
|| BI_MAX_LONG.compareTo(_numberBigInt) < 0) {
reportOverflowLong();
}
_numberLong = _numberBigInt.longValue();
} else if ((_numTypesValid & NR_DOUBLE) != 0) {
// Need to check boundaries
if (_numberDouble < MIN_LONG_D || _numberDouble > MAX_LONG_D) {
reportOverflowLong();
}
_numberLong = (long) _numberDouble;
} else if ((_numTypesValid & NR_BIGDECIMAL) != 0) {
if (BD_MIN_LONG.compareTo(_numberBigDecimal) > 0
|| BD_MAX_LONG.compareTo(_numberBigDecimal) < 0) {
reportOverflowLong();
}
_numberLong = _numberBigDecimal.longValue();
} else {
_throwInternal();
}
_numTypesValid |= NR_LONG;
}
protected void convertNumberToBigInteger() throws IOException
{
if ((_numTypesValid & NR_BIGDECIMAL) != 0) {
// here it'll just get truncated, no exceptions thrown
_numberBigInt = _numberBigDecimal.toBigInteger();
} else if ((_numTypesValid & NR_LONG) != 0) {
_numberBigInt = BigInteger.valueOf(_numberLong);
} else if ((_numTypesValid & NR_INT) != 0) {
_numberBigInt = BigInteger.valueOf(_numberInt);
} else if ((_numTypesValid & NR_DOUBLE) != 0) {
_numberBigInt = BigDecimal.valueOf(_numberDouble).toBigInteger();
} else {
_throwInternal();
}
_numTypesValid |= NR_BIGINT;
}
protected void convertNumberToDouble() throws IOException
{
// Note: this MUST start with more accurate representations, since we don't know which
// value is the original one (others get generated when requested)
if ((_numTypesValid & NR_BIGDECIMAL) != 0) {
_numberDouble = _numberBigDecimal.doubleValue();
} else if ((_numTypesValid & NR_BIGINT) != 0) {
_numberDouble = _numberBigInt.doubleValue();
} else if ((_numTypesValid & NR_LONG) != 0) {
_numberDouble = (double) _numberLong;
} else if ((_numTypesValid & NR_INT) != 0) {
_numberDouble = (double) _numberInt;
} else {
_throwInternal();
}
_numTypesValid |= NR_DOUBLE;
}
protected void convertNumberToBigDecimal() throws IOException
{
// Note: this MUST start with more accurate representations, since we don't know which
// value is the original one (others get generated when requested)
if ((_numTypesValid & NR_DOUBLE) != 0) {
// Let's parse from String representation, to avoid rounding errors that
//non-decimal floating operations would incur
_numberBigDecimal = NumberInput.parseBigDecimal(getText());
} else if ((_numTypesValid & NR_BIGINT) != 0) {
_numberBigDecimal = new BigDecimal(_numberBigInt);
} else if ((_numTypesValid & NR_LONG) != 0) {
_numberBigDecimal = BigDecimal.valueOf(_numberLong);
} else if ((_numTypesValid & NR_INT) != 0) {
_numberBigDecimal = BigDecimal.valueOf(_numberInt);
} else {
_throwInternal();
}
_numTypesValid |= NR_BIGDECIMAL;
}
protected void reportOverflowInt() throws IOException {
_reportError("Numeric value ("+getText()+") out of range of int ("+Integer.MIN_VALUE+" - "+Integer.MAX_VALUE+")");
}
protected void reportOverflowLong() throws IOException {
_reportError("Numeric value ("+getText()+") out of range of long ("+Long.MIN_VALUE+" - "+Long.MAX_VALUE+")");
}
/*
/**********************************************************
/* Internal methods, secondary parsing
/**********************************************************
*/
/**
* Method called to finish parsing of a token so that token contents
* are retriable
*/
protected void _finishToken() throws IOException
{
_tokenIncomplete = false;
int ch = _typeByte;
final int type = ((ch >> 5) & 0x7);
ch &= 0x1F;
// Either String or byte[]
if (type != CBORConstants.MAJOR_TYPE_TEXT) {
if (type == CBORConstants.MAJOR_TYPE_BYTES) {
_binaryValue = _finishBytes(_decodeExplicitLength(ch));
return;
}
// should never happen so
_throwInternal();
}
// String value, decode
final int len = _decodeExplicitLength(ch);
if (len <= 0) {
if (len < 0) {
_finishChunkedText();
} else {
_textBuffer.resetWithEmpty();
}
return;
}
if (len > (_inputEnd - _inputPtr)) {
// or if not, could we read?
if (len >= _inputBuffer.length) {
// If not enough space, need handling similar to chunked
_finishLongText(len);
return;
}
_loadToHaveAtLeast(len);
}
// offline for better optimization
_finishShortText(len);
}
/**
* @since 2.6
*/
protected String _finishTextToken(int ch) throws IOException
{
_tokenIncomplete = false;
final int type = ((ch >> 5) & 0x7);
ch &= 0x1F;
// sanity check
if (type != CBORConstants.MAJOR_TYPE_TEXT) {
// should never happen so
_throwInternal();
}
// String value, decode
final int len = _decodeExplicitLength(ch);
if (len <= 0) {
if (len == 0) {
_textBuffer.resetWithEmpty();
return "";
}
_finishChunkedText();
return _textBuffer.contentsAsString();
}
if (len > (_inputEnd - _inputPtr)) {
// or if not, could we read?
if (len >= _inputBuffer.length) {
// If not enough space, need handling similar to chunked
_finishLongText(len);
return _textBuffer.contentsAsString();
}
_loadToHaveAtLeast(len);
}
// offline for better optimization
return _finishShortText(len);
}
private final String _finishShortText(int len) throws IOException
{
char[] outBuf = _textBuffer.emptyAndGetCurrentSegment();
if (outBuf.length < len) { // one minor complication
outBuf = _textBuffer.expandCurrentSegment(len);
}
int outPtr = 0;
int inPtr = _inputPtr;
_inputPtr += len;
final byte[] inputBuf = _inputBuffer;
// Let's actually do a tight loop for ASCII first:
final int end = inPtr + len;
int i;
while ((i = inputBuf[inPtr]) >= 0) {
outBuf[outPtr++] = (char) i;
if (++inPtr == end) {
return _textBuffer.setCurrentAndReturn(outPtr);
}
}
final int[] codes = UTF8_UNIT_CODES;
do {
i = inputBuf[inPtr++] & 0xFF;
switch (codes[i]) {
case 0:
break;
case 1:
i = ((i & 0x1F) << 6) | (inputBuf[inPtr++] & 0x3F);
break;
case 2:
i = ((i & 0x0F) << 12)
| ((inputBuf[inPtr++] & 0x3F) << 6)
| (inputBuf[inPtr++] & 0x3F);
break;
case 3:
i = ((i & 0x07) << 18)
| ((inputBuf[inPtr++] & 0x3F) << 12)
| ((inputBuf[inPtr++] & 0x3F) << 6)
| (inputBuf[inPtr++] & 0x3F);
// note: this is the codepoint value; need to split, too
i -= 0x10000;
outBuf[outPtr++] = (char) (0xD800 | (i >> 10));
i = 0xDC00 | (i & 0x3FF);
break;
default: // invalid
_reportError("Invalid byte "+Integer.toHexString(i)+" in Unicode text block");
}
outBuf[outPtr++] = (char) i;
} while (inPtr < end);
return _textBuffer.setCurrentAndReturn(outPtr);
}
private final void _finishLongText(int len) throws IOException
{
char[] outBuf = _textBuffer.emptyAndGetCurrentSegment();
int outPtr = 0;
final int[] codes = UTF8_UNIT_CODES;
int outEnd = outBuf.length;
while (--len >= 0) {
int c = _nextByte() & 0xFF;
int code = codes[c];
if (code == 0 && outPtr < outEnd) {
outBuf[outPtr++] = (char) c;
continue;
}
if ((len -= code) < 0) { // may need to improve error here but...
throw _constructError("Malformed UTF-8 character at end of long (non-chunked) text segment");
}
switch (code) {
case 0:
break;
case 1: // 2-byte UTF
{
int d = _nextByte();
if ((d & 0xC0) != 0x080) {
_reportInvalidOther(d & 0xFF, _inputPtr);
}
c = ((c & 0x1F) << 6) | (d & 0x3F);
}
break;
case 2: // 3-byte UTF
c = _decodeUTF8_3(c);
break;
case 3: // 4-byte UTF
c = _decodeUTF8_4(c);
// Let's add first part right away:
outBuf[outPtr++] = (char) (0xD800 | (c >> 10));
if (outPtr >= outBuf.length) {
outBuf = _textBuffer.finishCurrentSegment();
outPtr = 0;
outEnd = outBuf.length;
}
c = 0xDC00 | (c & 0x3FF);
// And let the other char output down below
break;
default:
// Is this good enough error message?
_reportInvalidChar(c);
}
// Need more room?
if (outPtr >= outEnd) {
outBuf = _textBuffer.finishCurrentSegment();
outPtr = 0;
outEnd = outBuf.length;
}
// Ok, let's add char to output:
outBuf[outPtr++] = (char) c;
}
_textBuffer.setCurrentLength(outPtr);
}
private final void _finishChunkedText() throws IOException
{
char[] outBuf = _textBuffer.emptyAndGetCurrentSegment();
int outPtr = 0;
final int[] codes = UTF8_UNIT_CODES;
int outEnd = outBuf.length;
final byte[] input = _inputBuffer;
_chunkEnd = _inputPtr;
_chunkLeft = 0;
while (true) {
// at byte boundary fine to get break marker, hence different:
if (_inputPtr >= _chunkEnd) {
// end of chunk? get a new one, if there is one; if not, we are done
if (_chunkLeft == 0) {
int len = _decodeChunkLength(CBORConstants.MAJOR_TYPE_TEXT);
if (len < 0) { // fine at this point (but not later)
break;
}
_chunkLeft = len;
int end = _inputPtr + len;
if (end <= _inputEnd) { // all within buffer
_chunkLeft = 0;
_chunkEnd = end;
} else { // stretches beyond
_chunkLeft = (end - _inputEnd);
_chunkEnd = _inputEnd;
}
}
// besides of which just need to ensure there's content
if (_inputPtr >= _inputEnd) { // end of buffer, but not necessarily chunk
loadMoreGuaranteed();
int end = _inputPtr + _chunkLeft;
if (end <= _inputEnd) { // all within buffer
_chunkLeft = 0;
_chunkEnd = end;
} else { // stretches beyond
_chunkLeft = (end - _inputEnd);
_chunkEnd = _inputEnd;
}
}
}
int c = input[_inputPtr++] & 0xFF;
int code = codes[c];
if (code == 0 && outPtr < outEnd) {
outBuf[outPtr++] = (char) c;
continue;
}
switch (code) {
case 0:
break;
case 1: // 2-byte UTF
{
int d = _nextChunkedByte();
if ((d & 0xC0) != 0x080) {
_reportInvalidOther(d & 0xFF, _inputPtr);
}
c = ((c & 0x1F) << 6) | (d & 0x3F);
}
break;
case 2: // 3-byte UTF
c = _decodeChunkedUTF8_3(c);
break;
case 3: // 4-byte UTF
c = _decodeChunkedUTF8_4(c);
// Let's add first part right away:
outBuf[outPtr++] = (char) (0xD800 | (c >> 10));
if (outPtr >= outBuf.length) {
outBuf = _textBuffer.finishCurrentSegment();
outPtr = 0;
outEnd = outBuf.length;
}
c = 0xDC00 | (c & 0x3FF);
// And let the other char output down below
break;
default:
// Is this good enough error message?
_reportInvalidChar(c);
}
// Need more room?
if (outPtr >= outEnd) {
outBuf = _textBuffer.finishCurrentSegment();
outPtr = 0;
outEnd = outBuf.length;
}
// Ok, let's add char to output:
outBuf[outPtr++] = (char) c;
}
_textBuffer.setCurrentLength(outPtr);
}
private final int _nextByte() throws IOException {
int inPtr = _inputPtr;
if (inPtr < _inputEnd) {
int ch = _inputBuffer[inPtr];
_inputPtr = inPtr+1;
return ch;
}
loadMoreGuaranteed();
return _inputBuffer[_inputPtr++];
}
private final int _nextChunkedByte() throws IOException {
int inPtr = _inputPtr;
// NOTE: _chunkEnd less than or equal to _inputEnd
if (inPtr >= _chunkEnd) {
return _nextChunkedByte2();
}
int ch = _inputBuffer[inPtr];
_inputPtr = inPtr+1;
return ch;
}
private final int _nextChunkedByte2() throws IOException
{
// two possibilities: either end of buffer (in which case, just load more),
// or end of chunk
if (_inputPtr >= _inputEnd) { // end of buffer, but not necessarily chunk
loadMoreGuaranteed();
if (_chunkLeft > 0) {
int end = _inputPtr + _chunkLeft;
if (end <= _inputEnd) { // all within buffer
_chunkLeft = 0;
_chunkEnd = end;
} else { // stretches beyond
_chunkLeft = (end - _inputEnd);
_chunkEnd = _inputEnd;
}
// either way, got it now
return _inputBuffer[_inputPtr++];
}
}
int len = _decodeChunkLength(CBORConstants.MAJOR_TYPE_TEXT);
// not actually acceptable if we got a split character
if (len < 0) {
_reportInvalidEOF(": chunked Text ends with partial UTF-8 character");
}
int end = _inputPtr + len;
if (end <= _inputEnd) { // all within buffer
_chunkLeft = 0;
_chunkEnd = end;
} else { // stretches beyond
_chunkLeft = (end - _inputEnd);
_chunkEnd = _inputEnd;
}
// either way, got it now
return _inputBuffer[_inputPtr++];
}
@SuppressWarnings("resource")
protected byte[] _finishBytes(int len) throws IOException
{
// First, simple: non-chunked
if (len >= 0) {
byte[] b = new byte[len];
if (_inputPtr >= _inputEnd) {
loadMoreGuaranteed();
}
int ptr = 0;
while (true) {
int toAdd = Math.min(len, _inputEnd - _inputPtr);
System.arraycopy(_inputBuffer, _inputPtr, b, ptr, toAdd);
_inputPtr += toAdd;
ptr += toAdd;
len -= toAdd;
if (len <= 0) {
return b;
}
loadMoreGuaranteed();
}
}
// or, if not, chunked...
ByteArrayBuilder bb = _getByteArrayBuilder();
while (true) {
if (_inputPtr >= _inputEnd) {
loadMoreGuaranteed();
}
int ch = _inputBuffer[_inputPtr++] & 0xFF;
if (ch == 0xFF) { // end marker
break;
}
// verify that type matches
int type = (ch >> 5);
if (type != CBORConstants.MAJOR_TYPE_BYTES) {
throw _constructError("Mismatched chunk in chunked content: expected "+CBORConstants.MAJOR_TYPE_BYTES
+" but encountered "+type);
}
len = _decodeExplicitLength(ch & 0x1F);
if (len < 0) {
throw _constructError("Illegal chunked-length indicator within chunked-length value (type "+CBORConstants.MAJOR_TYPE_BYTES+")");
}
while (len > 0) {
int avail = _inputEnd - _inputPtr;
if (_inputPtr >= _inputEnd) {
loadMoreGuaranteed();
avail = _inputEnd - _inputPtr;
}
int count = Math.min(avail, len);
bb.write(_inputBuffer, _inputPtr, count);
_inputPtr += count;
len -= count;
}
}
return bb.toByteArray();
}
protected final JsonToken _decodeFieldName() throws IOException
{
if (_inputPtr >= _inputEnd) {
loadMoreGuaranteed();
}
final int ch = _inputBuffer[_inputPtr++];
final int type = ((ch >> 5) & 0x7);
// Expecting a String, but may need to allow other types too
if (type != CBORConstants.MAJOR_TYPE_TEXT) { // the usual case
if (ch == -1) {
if (!_parsingContext.hasExpectedLength()) {
_parsingContext = _parsingContext.getParent();
return JsonToken.END_OBJECT;
}
_reportUnexpectedBreak();
}
// offline non-String cases, as they are expected to be rare
_decodeNonStringName(ch);
return JsonToken.FIELD_NAME;
}
final int lenMarker = ch & 0x1F;
String name;
if (lenMarker <= 23) {
if (lenMarker == 0) {
name = "";
} else {
name = _findDecodedFromSymbols(lenMarker);
if (name != null) {
_inputPtr += lenMarker;
} else {
name = _decodeShortName(lenMarker);
name = _addDecodedToSymbols(lenMarker, name);
}
}
} else {
final int actualLen = _decodeExplicitLength(lenMarker);
if (actualLen < 0) {
name = _decodeChunkedName();
} else {
name = _decodeLongerName(actualLen);
}
}
_parsingContext.setCurrentName(name);
return JsonToken.FIELD_NAME;
}
private final String _decodeShortName(int len) throws IOException
{
// note: caller ensures we have enough bytes available
int outPtr = 0;
char[] outBuf = _textBuffer.emptyAndGetCurrentSegment();
if (outBuf.length < len) { // one minor complication
outBuf = _textBuffer.expandCurrentSegment(len);
}
int inPtr = _inputPtr;
_inputPtr += len;
final int[] codes = UTF8_UNIT_CODES;
final byte[] inBuf = _inputBuffer;
// First a tight loop for Ascii
final int end = inPtr + len;
while (true) {
int i = inBuf[inPtr] & 0xFF;
int code = codes[i];
if (code != 0) {
break;
}
outBuf[outPtr++] = (char) i;
if (++inPtr == end) {
return _textBuffer.setCurrentAndReturn(outPtr);
}
}
// But in case there's multi-byte char, use a full loop
while (inPtr < end) {
int i = inBuf[inPtr++] & 0xFF;
int code = codes[i];
if (code != 0) {
// trickiest one, need surrogate handling
switch (code) {
case 1:
i = ((i & 0x1F) << 6) | (inBuf[inPtr++] & 0x3F);
break;
case 2:
i = ((i & 0x0F) << 12)
| ((inBuf[inPtr++] & 0x3F) << 6)
| (inBuf[inPtr++] & 0x3F);
break;
case 3:
i = ((i & 0x07) << 18)
| ((inBuf[inPtr++] & 0x3F) << 12)
| ((inBuf[inPtr++] & 0x3F) << 6)
| (inBuf[inPtr++] & 0x3F);
// note: this is the codepoint value; need to split, too
i -= 0x10000;
outBuf[outPtr++] = (char) (0xD800 | (i >> 10));
i = 0xDC00 | (i & 0x3FF);
break;
default: // invalid
_reportError("Invalid byte "+Integer.toHexString(i)+" in Object name");
}
}
outBuf[outPtr++] = (char) i;
}
return _textBuffer.setCurrentAndReturn(outPtr);
}
private final String _decodeLongerName(int len) throws IOException
{
// Do we have enough buffered content to read?
if ((_inputEnd - _inputPtr) < len) {
// or if not, could we read?
if (len >= _inputBuffer.length) {
// If not enough space, need handling similar to chunked
_finishLongText(len);
return _textBuffer.contentsAsString();
}
_loadToHaveAtLeast(len);
}
String name = _findDecodedFromSymbols(len);
if (name != null) {
_inputPtr += len;
return name;
}
name = _decodeShortName(len);
return _addDecodedToSymbols(len, name);
}
private final String _decodeChunkedName() throws IOException
{
_finishChunkedText();
return _textBuffer.contentsAsString();
}
/**
* Method that handles initial token type recognition for token
* that has to be either FIELD_NAME or END_OBJECT.
*/
protected final void _decodeNonStringName(int ch) throws IOException
{
final int type = ((ch >> 5) & 0x7);
String name;
if (type == CBORConstants.MAJOR_TYPE_INT_POS) {
name = _numberToName(ch, false);
} else if (type == CBORConstants.MAJOR_TYPE_INT_NEG) {
name = _numberToName(ch, true);
} else if (type == CBORConstants.MAJOR_TYPE_BYTES) {
/* 08-Sep-2014, tatu: As per [Issue#5], there are codecs
* (f.ex. Perl module "CBOR::XS") that use Binary data...
*/
final int blen = _decodeExplicitLength(ch & 0x1F);
byte[] b = _finishBytes(blen);
// TODO: Optimize, if this becomes commonly used & bottleneck; we have
// more optimized UTF-8 codecs available.
name = new String(b, UTF8);
} else {
if ((ch & 0xFF) == CBORConstants.INT_BREAK) {
_reportUnexpectedBreak();
}
throw _constructError("Unsupported major type ("+type+") for CBOR Objects, not (yet?) supported, only Strings");
}
_parsingContext.setCurrentName(name);
}
private final String _findDecodedFromSymbols(final int len) throws IOException
{
if ((_inputEnd - _inputPtr) < len) {
_loadToHaveAtLeast(len);
}
// First: maybe we already have this name decoded?
if (len < 5) {
int inPtr = _inputPtr;
final byte[] inBuf = _inputBuffer;
int q = inBuf[inPtr] & 0xFF;
if (len > 1) {
q = (q << 8) + (inBuf[++inPtr] & 0xFF);
if (len > 2) {
q = (q << 8) + (inBuf[++inPtr] & 0xFF);
if (len > 3) {
q = (q << 8) + (inBuf[++inPtr] & 0xFF);
}
}
}
_quad1 = q;
return _symbols.findName(q);
}
final byte[] inBuf = _inputBuffer;
int inPtr = _inputPtr;
// First quadbyte is easy
int q1 = (inBuf[inPtr++] & 0xFF);
q1 = (q1 << 8) | (inBuf[inPtr++] & 0xFF);
q1 = (q1 << 8) | (inBuf[inPtr++] & 0xFF);
q1 = (q1 << 8) | (inBuf[inPtr++] & 0xFF);
if (len < 9) {
int q2 = (inBuf[inPtr++] & 0xFF);
int left = len - 5;
if (left > 0) {
q2 = (q2 << 8) + (inBuf[inPtr++] & 0xFF);
if (left > 1) {
q2 = (q2 << 8) + (inBuf[inPtr++] & 0xFF);
if (left > 2) {
q2 = (q2 << 8) + (inBuf[inPtr++] & 0xFF);
}
}
}
_quad1 = q1;
_quad2 = q2;
return _symbols.findName(q1, q2);
}
int q2 = (inBuf[inPtr++] & 0xFF);
q2 = (q2 << 8) | (inBuf[inPtr++] & 0xFF);
q2 = (q2 << 8) | (inBuf[inPtr++] & 0xFF);
q2 = (q2 << 8) | (inBuf[inPtr++] & 0xFF);
if (len < 13) {
int q3 = (inBuf[inPtr++] & 0xFF);
int left = len - 9;
if (left > 0) {
q3 = (q3 << 8) + (inBuf[inPtr++] & 0xFF);
if (left > 1) {
q3 = (q3 << 8) + (inBuf[inPtr++] & 0xFF);
if (left > 2) {
q3 = (q3 << 8) + (inBuf[inPtr++] & 0xFF);
}
}
}
_quad1 = q1;
_quad2 = q2;
_quad3 = q3;
return _symbols.findName(q1, q2, q3);
}
return _findDecodedLong(len, q1, q2);
}
/**
* Method for locating names longer than 8 bytes (in UTF-8)
*/
private final String _findDecodedLong(int len, int q1, int q2) throws IOException
{
// first, need enough buffer to store bytes as ints:
{
int bufLen = (len + 3) >> 2;
if (bufLen > _quadBuffer.length) {
_quadBuffer = _growArrayTo(_quadBuffer, bufLen);
}
}
_quadBuffer[0] = q1;
_quadBuffer[1] = q2;
// then decode, full quads first
int offset = 2;
int inPtr = _inputPtr+8;
len -= 8;
final byte[] inBuf = _inputBuffer;
do {
int q = (inBuf[inPtr++] & 0xFF);
q = (q << 8) | inBuf[inPtr++] & 0xFF;
q = (q << 8) | inBuf[inPtr++] & 0xFF;
q = (q << 8) | inBuf[inPtr++] & 0xFF;
_quadBuffer[offset++] = q;
} while ((len -= 4) > 3);
// and then leftovers
if (len > 0) {
int q = inBuf[inPtr] & 0xFF;
if (len > 1) {
q = (q << 8) + (inBuf[++inPtr] & 0xFF);
if (len > 2) {
q = (q << 8) + (inBuf[++inPtr] & 0xFF);
}
}
_quadBuffer[offset++] = q;
}
return _symbols.findName(_quadBuffer, offset);
}
private final String _addDecodedToSymbols(int len, String name) {
if (len < 5) {
return _symbols.addName(name, _quad1);
}
if (len < 9) {
return _symbols.addName(name, _quad1, _quad2);
}
if (len < 13) {
return _symbols.addName(name, _quad1, _quad2, _quad3);
}
int qlen = (len + 3) >> 2;
return _symbols.addName(name, _quadBuffer, qlen);
}
private static int[] _growArrayTo(int[] arr, int minSize) {
return Arrays.copyOf(arr, minSize+4);
}
/*
/**********************************************************
/* Internal methods, skipping
/**********************************************************
*/
/**
* Method called to skip remainders of an incomplete token, when
* contents themselves will not be needed any more.
* Only called or byte array and text.
*/
protected void _skipIncomplete() throws IOException
{
_tokenIncomplete = false;
final int type = ((_typeByte >> 5) & 0x7);
// Either String or byte[]
if (type != CBORConstants.MAJOR_TYPE_TEXT
&& type == CBORConstants.MAJOR_TYPE_TEXT) {
_throwInternal();
}
final int lowBits = _typeByte & 0x1F;
if (lowBits <= 23) {
if (lowBits > 0) {
_skipBytes(lowBits);
}
return;
}
switch (lowBits) {
case 24:
_skipBytes(_decode8Bits());
break;
case 25:
_skipBytes(_decode16Bits());
break;
case 26:
_skipBytes(_decode32Bits());
break;
case 27: // seriously?
_skipBytesL(_decode64Bits());
break;
case 31:
_skipChunked(type);
break;
default:
_invalidToken(_typeByte);
}
}
protected void _skipChunked(int expectedType) throws IOException
{
while (true) {
if (_inputPtr >= _inputEnd) {
loadMoreGuaranteed();
}
int ch = _inputBuffer[_inputPtr++] & 0xFF;
if (ch == 0xFF) {
return;
}
// verify that type matches
int type = (ch >> 5);
if (type != expectedType) {
throw _constructError("Mismatched chunk in chunked content: expected "+expectedType
+" but encountered "+type);
}
final int lowBits = ch & 0x1F;
if (lowBits <= 23) {
if (lowBits > 0) {
_skipBytes(lowBits);
}
continue;
}
switch (lowBits) {
case 24:
_skipBytes(_decode8Bits());
break;
case 25:
_skipBytes(_decode16Bits());
break;
case 26:
_skipBytes(_decode32Bits());
break;
case 27: // seriously?
_skipBytesL(_decode64Bits());
break;
case 31:
throw _constructError("Illegal chunked-length indicator within chunked-length value (type "+expectedType+")");
default:
_invalidToken(_typeByte);
}
}
}
protected void _skipBytesL(long llen) throws IOException
{
while (llen > MAX_INT_L) {
_skipBytes((int) MAX_INT_L);
llen -= MAX_INT_L;
}
_skipBytes((int) llen);
}
protected void _skipBytes(int len) throws IOException
{
while (true) {
int toAdd = Math.min(len, _inputEnd - _inputPtr);
_inputPtr += toAdd;
len -= toAdd;
if (len <= 0) {
return;
}
loadMoreGuaranteed();
}
}
/*
/**********************************************************
/* Internal methods, length/number decoding
/**********************************************************
*/
private final int _decodeTag(int lowBits) throws IOException
{
if (lowBits <= 23) {
return lowBits;
}
switch (lowBits - 24) {
case 0:
return _decode8Bits();
case 1:
return _decode16Bits();
case 2:
return _decode32Bits();
case 3:
/* 16-Jan-2014, tatu: Technically legal, but nothing defined, so let's
* only allow for cases where encoder is being wasteful...
*/
long l = _decode64Bits();
if (l < MIN_INT_L || l > MAX_INT_L) {
_reportError("Illegal Tag value: "+l);
}
return (int) l;
}
throw _constructError("Invalid low bits for Tag token: 0x"+Integer.toHexString(lowBits));
}
/**
* Method used to decode explicit length of a variable-length value
* (or, for indefinite/chunked, indicate that one is not known).
* Note that long (64-bit) length is only allowed if it fits in
* 32-bit signed int, for now; expectation being that longer values
* are always encoded as chunks.
*/
private final int _decodeExplicitLength(int lowBits) throws IOException
{
// common case, indefinite length; relies on marker
if (lowBits == 31) {
return -1;
}
if (lowBits <= 23) {
return lowBits;
}
switch (lowBits - 24) {
case 0:
return _decode8Bits();
case 1:
return _decode16Bits();
case 2:
return _decode32Bits();
case 3:
long l = _decode64Bits();
if (l < 0 || l > MAX_INT_L) {
throw _constructError("Illegal length for "+getCurrentToken()+": "+l);
}
return (int) l;
}
throw _constructError("Invalid length for "+getCurrentToken()+": 0x"+Integer.toHexString(lowBits));
}
private int _decodeChunkLength(int expType) throws IOException
{
if (_inputPtr >= _inputEnd) {
loadMoreGuaranteed();
}
int ch = (int) _inputBuffer[_inputPtr++] & 0xFF;
if (ch == CBORConstants.INT_BREAK) {
return -1;
}
int type = (ch >> 5);
if (type != expType) {
throw _constructError("Mismatched chunk in chunked content: expected "
+expType+" but encountered "+type+" (byte 0x"+Integer.toHexString(ch)+")");
}
int len = _decodeExplicitLength(ch & 0x1F);
if (len < 0) {
throw _constructError("Illegal chunked-length indicator within chunked-length value (type "+expType+")");
}
return len;
}
private double _decodeHalfSizeFloat() throws IOException
{
int i16 = _decode16Bits() & 0xFFFF;
boolean neg = (i16 >> 15) != 0;
int e = (i16 >> 10) & 0x1F;
int f = i16 & 0x03FF;
if (e == 0) {
double d = MATH_POW_2_NEG14 * (f / MATH_POW_2_10);
return neg ? -d : d;
}
if (e == 0x1F) {
if (f != 0) return Double.NaN;
return neg ? Float.NEGATIVE_INFINITY : Float.POSITIVE_INFINITY;
}
double d = Math.pow(2, e - 15) * (1 + f / MATH_POW_2_10);
return neg ? -d : d;
}
private final int _decode8Bits() throws IOException {
if (_inputPtr >= _inputEnd) {
loadMoreGuaranteed();
}
return _inputBuffer[_inputPtr++] & 0xFF;
}
private final int _decode16Bits() throws IOException {
int ptr = _inputPtr;
if ((ptr + 1) >= _inputEnd) {
return _slow16();
}
final byte[] b = _inputBuffer;
int v = ((b[ptr] & 0xFF) << 8) + (b[ptr+1] & 0xFF);
_inputPtr = ptr+2;
return v;
}
private final int _slow16() throws IOException {
if (_inputPtr >= _inputEnd) {
loadMoreGuaranteed();
}
int v = (_inputBuffer[_inputPtr++] & 0xFF);
if (_inputPtr >= _inputEnd) {
loadMoreGuaranteed();
}
return (v << 8) + (_inputBuffer[_inputPtr++] & 0xFF);
}
private final int _decode32Bits() throws IOException {
int ptr = _inputPtr;
if ((ptr + 3) >= _inputEnd) {
return _slow32();
}
final byte[] b = _inputBuffer;
int v = (b[ptr++] << 24) + ((b[ptr++] & 0xFF) << 16)
+ ((b[ptr++] & 0xFF) << 8) + (b[ptr++] & 0xFF);
_inputPtr = ptr;
return v;
}
private final int _slow32() throws IOException {
if (_inputPtr >= _inputEnd) {
loadMoreGuaranteed();
}
int v = _inputBuffer[_inputPtr++]; // sign will disappear anyway
if (_inputPtr >= _inputEnd) {
loadMoreGuaranteed();
}
v = (v << 8) + (_inputBuffer[_inputPtr++] & 0xFF);
if (_inputPtr >= _inputEnd) {
loadMoreGuaranteed();
}
v = (v << 8) + (_inputBuffer[_inputPtr++] & 0xFF);
if (_inputPtr >= _inputEnd) {
loadMoreGuaranteed();
}
return (v << 8) + (_inputBuffer[_inputPtr++] & 0xFF);
}
private final long _decode64Bits() throws IOException {
int ptr = _inputPtr;
if ((ptr + 7) >= _inputEnd) {
return _slow64();
}
final byte[] b = _inputBuffer;
int i1 = (b[ptr++] << 24) + ((b[ptr++] & 0xFF) << 16)
+ ((b[ptr++] & 0xFF) << 8) + (b[ptr++] & 0xFF);
int i2 = (b[ptr++] << 24) + ((b[ptr++] & 0xFF) << 16)
+ ((b[ptr++] & 0xFF) << 8) + (b[ptr++] & 0xFF);
_inputPtr = ptr;
return _long(i1, i2);
}
private final long _slow64() throws IOException {
return _long(_decode32Bits(), _decode32Bits());
}
private final static long _long(int i1, int i2)
{
long l1 = i1;
long l2 = i2;
l2 = (l2 << 32) >>> 32;
return (l1 << 32) + l2;
}
/*
/**********************************************************
/* Internal methods, UTF8 decoding
/**********************************************************
*/
/*
private final int X_decodeUTF8_2(int c) throws IOException {
int d = _nextByte();
if ((d & 0xC0) != 0x080) {
_reportInvalidOther(d & 0xFF, _inputPtr);
}
return ((c & 0x1F) << 6) | (d & 0x3F);
}
*/
private final int _decodeUTF8_3(int c1) throws IOException
{
c1 &= 0x0F;
int d = _nextByte();
if ((d & 0xC0) != 0x080) {
_reportInvalidOther(d & 0xFF, _inputPtr);
}
int c = (c1 << 6) | (d & 0x3F);
d = _nextByte();
if ((d & 0xC0) != 0x080) {
_reportInvalidOther(d & 0xFF, _inputPtr);
}
c = (c << 6) | (d & 0x3F);
return c;
}
private final int _decodeChunkedUTF8_3(int c1) throws IOException
{
c1 &= 0x0F;
int d = _nextChunkedByte();
if ((d & 0xC0) != 0x080) {
_reportInvalidOther(d & 0xFF, _inputPtr);
}
int c = (c1 << 6) | (d & 0x3F);
d = _nextChunkedByte();
if ((d & 0xC0) != 0x080) {
_reportInvalidOther(d & 0xFF, _inputPtr);
}
c = (c << 6) | (d & 0x3F);
return c;
}
/**
* @return Character value minus 0x10000; this so that caller
* can readily expand it to actual surrogates
*/
private final int _decodeUTF8_4(int c) throws IOException
{
int d = _nextByte();
if ((d & 0xC0) != 0x080) {
_reportInvalidOther(d & 0xFF, _inputPtr);
}
c = ((c & 0x07) << 6) | (d & 0x3F);
d = _nextByte();
if ((d & 0xC0) != 0x080) {
_reportInvalidOther(d & 0xFF, _inputPtr);
}
c = (c << 6) | (d & 0x3F);
d = _nextByte();
if ((d & 0xC0) != 0x080) {
_reportInvalidOther(d & 0xFF, _inputPtr);
}
return ((c << 6) | (d & 0x3F)) - 0x10000;
}
private final int _decodeChunkedUTF8_4(int c) throws IOException
{
int d = _nextChunkedByte();
if ((d & 0xC0) != 0x080) {
_reportInvalidOther(d & 0xFF, _inputPtr);
}
c = ((c & 0x07) << 6) | (d & 0x3F);
d = _nextChunkedByte();
if ((d & 0xC0) != 0x080) {
_reportInvalidOther(d & 0xFF, _inputPtr);
}
c = (c << 6) | (d & 0x3F);
d = _nextChunkedByte();
if ((d & 0xC0) != 0x080) {
_reportInvalidOther(d & 0xFF, _inputPtr);
}
return ((c << 6) | (d & 0x3F)) - 0x10000;
}
/*
/**********************************************************
/* Low-level reading, other
/**********************************************************
*/
protected final boolean loadMore() throws IOException
{
_currInputProcessed += _inputEnd;
if (_inputStream != null) {
int count = _inputStream.read(_inputBuffer, 0, _inputBuffer.length);
if (count > 0) {
_inputPtr = 0;
_inputEnd = count;
return true;
}
// End of input
_closeInput();
// Should never return 0, so let's fail
if (count == 0) {
throw new IOException("InputStream.read() returned 0 characters when trying to read "+_inputBuffer.length+" bytes");
}
}
return false;
}
protected final void loadMoreGuaranteed() throws IOException {
if (!loadMore()) { _reportInvalidEOF(); }
}
/**
* Helper method that will try to load at least specified number bytes in
* input buffer, possible moving existing data around if necessary
*/
protected final void _loadToHaveAtLeast(int minAvailable) throws IOException
{
// No input stream, no leading (either we are closed, or have non-stream input source)
if (_inputStream == null) {
throw _constructError("Needed to read "+minAvailable+" bytes, reached end-of-input");
}
// Need to move remaining data in front?
int amount = _inputEnd - _inputPtr;
if (amount > 0 && _inputPtr > 0) {
_currInputProcessed += _inputPtr;
//_currInputRowStart -= _inputPtr;
System.arraycopy(_inputBuffer, _inputPtr, _inputBuffer, 0, amount);
_inputEnd = amount;
} else {
_inputEnd = 0;
}
_inputPtr = 0;
while (_inputEnd < minAvailable) {
int count = _inputStream.read(_inputBuffer, _inputEnd, _inputBuffer.length - _inputEnd);
if (count < 1) {
// End of input
_closeInput();
// Should never return 0, so let's fail
if (count == 0) {
throw new IOException("InputStream.read() returned 0 characters when trying to read "+amount+" bytes");
}
throw _constructError("Needed to read "+minAvailable+" bytes, missed "+minAvailable+" before end-of-input");
}
_inputEnd += count;
}
}
protected ByteArrayBuilder _getByteArrayBuilder() {
if (_byteArrayBuilder == null) {
_byteArrayBuilder = new ByteArrayBuilder();
} else {
_byteArrayBuilder.reset();
}
return _byteArrayBuilder;
}
protected void _closeInput() throws IOException {
if (_inputStream != null) {
if (_ioContext.isResourceManaged() || isEnabled(JsonParser.Feature.AUTO_CLOSE_SOURCE)) {
_inputStream.close();
}
_inputStream = null;
}
}
@Override
protected void _handleEOF() throws JsonParseException {
if (!_parsingContext.inRoot()) {
_reportInvalidEOF(": expected close marker for "+_parsingContext.getTypeDesc()+" (from "+_parsingContext.getStartLocation(_ioContext.getSourceReference())+")");
}
}
/*
/**********************************************************
/* Internal methods, error reporting
/**********************************************************
*/
protected void _reportUnexpectedBreak() throws IOException {
if (_parsingContext.inRoot()) {
throw _constructError("Unexpected Break (0xFF) token in Root context");
}
throw _constructError("Unexpected Break (0xFF) token in definite length ("
+_parsingContext.getExpectedLength()+") "
+(_parsingContext.inObject() ? "Object" : "Array" ));
}
protected void _reportInvalidChar(int c) throws JsonParseException {
// Either invalid WS or illegal UTF-8 start char
if (c < ' ') {
_throwInvalidSpace(c);
}
_reportInvalidInitial(c);
}
protected void _reportInvalidInitial(int mask) throws JsonParseException {
_reportError("Invalid UTF-8 start byte 0x"+Integer.toHexString(mask));
}
protected void _reportInvalidOther(int mask) throws JsonParseException {
_reportError("Invalid UTF-8 middle byte 0x"+Integer.toHexString(mask));
}
protected void _reportInvalidOther(int mask, int ptr) throws JsonParseException {
_inputPtr = ptr;
_reportInvalidOther(mask);
}
}