org.codehaus.jackson.impl
Class ReaderBasedParser

java.lang.Object
  extended by org.codehaus.jackson.JsonParser
      extended by org.codehaus.jackson.impl.JsonParserBase
          extended by org.codehaus.jackson.impl.JsonNumericParserBase
              extended by org.codehaus.jackson.impl.ReaderBasedParserBase
                  extended by org.codehaus.jackson.impl.ReaderBasedNumericParser
                      extended by org.codehaus.jackson.impl.ReaderBasedParser
All Implemented Interfaces:
Closeable

public final class ReaderBasedParser
extends ReaderBasedNumericParser

This is a concrete implementation of JsonParser, which is based on a Reader to handle low-level character conversion tasks.


Nested Class Summary
 
Nested classes/interfaces inherited from class org.codehaus.jackson.JsonParser
JsonParser.Feature, JsonParser.NumberType
 
Field Summary
protected  CharsToNameCanonicalizer _symbols
           
 
Fields inherited from class org.codehaus.jackson.impl.ReaderBasedParserBase
_inputBuffer, _reader
 
Fields inherited from class org.codehaus.jackson.impl.JsonNumericParserBase
_numberBigDecimal, _numberBigInt, _numberDouble, _numberInt, _numberLong, _numberNegative, _numTypesValid, CHAR_NULL, INT_0, INT_1, INT_2, INT_3, INT_4, INT_5, INT_6, INT_7, INT_8, INT_9, INT_DECIMAL_POINT, INT_e, INT_E, INT_MINUS, INT_PLUS, mExpLength, mFractLength, mIntLength, NR_BIGDECIMAL, NR_BIGINT, NR_DOUBLE, NR_INT, NR_LONG, NR_UNKNOWN
 
Fields inherited from class org.codehaus.jackson.impl.JsonParserBase
_binaryValue, _closed, _currInputProcessed, _currInputRow, _currInputRowStart, _inputEnd, _inputPtr, _ioContext, _nameCopied, _nameCopyBuffer, _nextToken, _parsingContext, _textBuffer, _tokenIncomplete, _tokenInputCol, _tokenInputRow, _tokenInputTotal
 
Fields inherited from class org.codehaus.jackson.JsonParser
_currToken, _features, _lastClearedToken
 
Constructor Summary
ReaderBasedParser(IOContext ioCtxt, int features, Reader r, ObjectCodec codec, CharsToNameCanonicalizer st)
           
 
Method Summary
protected  byte[] _decodeBase64(Base64Variant b64variant)
           
protected  char _decodeEscaped()
           
protected  void _finishString()
           
protected  void _finishString2()
           
protected  String _handleUnusualFieldName(int i)
          Method called when we see non-white space character other than double quote, when expecting a field name.
protected  void _matchToken(JsonToken token)
          Method called to much one of literal tokens we may expect
protected  String _parseFieldName(int i)
           
protected  void _skipCR()
          We actually need to check the character value here (to see if we have \n following \r).
protected  void _skipLF()
           
protected  void _skipString()
          Method called to skim through rest of unparsed String value, if it is not needed.
 void close()
          Closes the parser so that no further iteration or data access can be made.
 JsonToken nextToken()
          Main iteration method, which will advance stream enough to determine type of the next token, if any.
<T> T
readValueAs(Class<T> valueType)
          Method to deserialize Json content into a non-container type (it can be an array type, however): typically a bean, array or a wrapper type (like Boolean).
<T> T
readValueAs(TypeReference<?> valueTypeRef)
          Method to deserialize Json content into a Java type, reference to which is passed as argument.
 JsonNode readValueAsTree()
          Method to deserialize Json content into equivalent "tree model", represented by root JsonNode of resulting model.
protected  IllegalArgumentException reportInvalidChar(Base64Variant b64variant, char ch, int bindex)
           
protected  IllegalArgumentException reportInvalidChar(Base64Variant b64variant, char ch, int bindex, String msg)
           
 
Methods inherited from class org.codehaus.jackson.impl.ReaderBasedNumericParser
parseNumberText
 
Methods inherited from class org.codehaus.jackson.impl.ReaderBasedParserBase
_closeInput, _releaseBuffers, getNextChar, loadMore
 
Methods inherited from class org.codehaus.jackson.impl.JsonNumericParserBase
convertNumberToBigDecimal, convertNumberToBigInteger, convertNumberToDouble, convertNumberToInt, convertNumberToLong, getBigIntegerValue, getByteValue, getDecimalValue, getDoubleValue, getFloatValue, getIntValue, getLongValue, getNumberType, getNumberValue, getShortValue, parseNumericValue, reportInvalidNumber, reportOverflowInt, reportOverflowLong, reportUnexpectedNumberChar, reset
 
Methods inherited from class org.codehaus.jackson.impl.JsonParserBase
_constructError, _constructError, _getByteArrayBuilder, _getCharDesc, _handleEOF, _reportError, _reportInvalidEOF, _reportInvalidEOF, _reportMismatchedEndMarker, _reportUnexpectedChar, _throwInternal, _throwInvalidSpace, _throwUnquotedSpace, _wrapError, getBinaryValue, getCurrentLocation, getCurrentName, getParsingContext, getText, getTextCharacters, getTextLength, getTextOffset, getTokenCharacterOffset, getTokenColumnNr, getTokenLineNr, getTokenLocation, isClosed, loadMoreGuaranteed, nextValue, skipChildren
 
Methods inherited from class org.codehaus.jackson.JsonParser
clearCurrentToken, configure, disable, disableFeature, enable, enableFeature, getBinaryValue, getCurrentToken, getLastClearedToken, hasCurrentToken, isEnabled, isFeatureEnabled, setFeature
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

_symbols

protected final CharsToNameCanonicalizer _symbols
Constructor Detail

ReaderBasedParser

public ReaderBasedParser(IOContext ioCtxt,
                         int features,
                         Reader r,
                         ObjectCodec codec,
                         CharsToNameCanonicalizer st)
Method Detail

nextToken

public JsonToken nextToken()
                    throws IOException,
                           JsonParseException
Description copied from class: JsonParser
Main iteration method, which will advance stream enough to determine type of the next token, if any. If none remaining (stream has no content other than possible white space before ending), null will be returned.

Specified by:
nextToken in class JsonParserBase
Returns:
Next token from the stream, if any found, or null to indicate end-of-input
Throws:
IOException
JsonParseException

close

public void close()
           throws IOException
Description copied from class: JsonParser
Closes the parser so that no further iteration or data access can be made.

Method will also close the underlying input source, if parser either owns the input source, or feature JsonParser.Feature.AUTO_CLOSE_SOURCE is enabled. Whether parser owns the input source depends on factory method that was used to construct instance (so check JsonFactory for details, but the general idea is that if caller passes in closable resource (such as InputStream or Reader) parser does NOT own the source; but if it passes a reference (such as File or URL and creates stream or reader it does own them.

Specified by:
close in interface Closeable
Overrides:
close in class JsonParserBase
Throws:
IOException

readValueAs

public final <T> T readValueAs(Class<T> valueType)
                    throws IOException,
                           JsonProcessingException
Description copied from class: JsonParser
Method to deserialize Json content into a non-container type (it can be an array type, however): typically a bean, array or a wrapper type (like Boolean). Note: method can only be called if the parser has an object codec assigned; this is true for parsers constructed by MappingJsonFactory but not for JsonFactory (unless its setCodec method has been explicitly called).

This method may advance the event stream, for structured types the current event will be the closing end marker (END_ARRAY, END_OBJECT) of the bound structure. For non-structured Json types (and for JsonToken.VALUE_EMBEDDED_OBJECT) stream is not advanced.

Note: this method should NOT be used if the result type is a container (Collection or Map. The reason is that due to type erasure, key and value types can not be introspected when using this method.

Specified by:
readValueAs in class JsonParser
Throws:
IOException
JsonProcessingException

readValueAs

public final <T> T readValueAs(TypeReference<?> valueTypeRef)
                    throws IOException,
                           JsonProcessingException
Description copied from class: JsonParser
Method to deserialize Json content into a Java type, reference to which is passed as argument. Type is passed using so-called "super type token" and specifically needs to be used if the root type is a parameterized (generic) container type. Note: method can only be called if the parser has an object codec assigned; this is true for parsers constructed by MappingJsonFactory but not for JsonFactory (unless its setCodec method has been explicitly called).

This method may advance the event stream, for structured types the current event will be the closing end marker (END_ARRAY, END_OBJECT) of the bound structure. For non-structured Json types (and for JsonToken.VALUE_EMBEDDED_OBJECT) stream is not advanced.

Specified by:
readValueAs in class JsonParser
Throws:
IOException
JsonProcessingException

readValueAsTree

public final JsonNode readValueAsTree()
                               throws IOException,
                                      JsonProcessingException
Description copied from class: JsonParser
Method to deserialize Json content into equivalent "tree model", represented by root JsonNode of resulting model. For Json Arrays it will an array node (with child nodes), for objects object node (with child nodes), and for other types matching leaf node type

Specified by:
readValueAsTree in class JsonParser
Throws:
IOException
JsonProcessingException

_parseFieldName

protected final String _parseFieldName(int i)
                                throws IOException,
                                       JsonParseException
Throws:
IOException
JsonParseException

_handleUnusualFieldName

protected final String _handleUnusualFieldName(int i)
                                        throws IOException,
                                               JsonParseException
Method called when we see non-white space character other than double quote, when expecting a field name. In standard mode will just throw an expection; but in non-standard modes may be able to parse name.

Throws:
IOException
JsonParseException
Since:
1.2

_finishString

protected void _finishString()
                      throws IOException,
                             JsonParseException
Specified by:
_finishString in class JsonParserBase
Throws:
IOException
JsonParseException

_finishString2

protected void _finishString2()
                       throws IOException,
                              JsonParseException
Throws:
IOException
JsonParseException

_skipString

protected void _skipString()
                    throws IOException,
                           JsonParseException
Method called to skim through rest of unparsed String value, if it is not needed. This can be done bit faster if contents need not be stored for future access.

Throws:
IOException
JsonParseException

_matchToken

protected void _matchToken(JsonToken token)
                    throws IOException,
                           JsonParseException
Method called to much one of literal tokens we may expect

Throws:
IOException
JsonParseException

_skipCR

protected final void _skipCR()
                      throws IOException
We actually need to check the character value here (to see if we have \n following \r).

Throws:
IOException

_skipLF

protected final void _skipLF()
                      throws IOException
Throws:
IOException

_decodeEscaped

protected final char _decodeEscaped()
                             throws IOException,
                                    JsonParseException
Throws:
IOException
JsonParseException

_decodeBase64

protected byte[] _decodeBase64(Base64Variant b64variant)
                        throws IOException,
                               JsonParseException
Specified by:
_decodeBase64 in class JsonParserBase
Throws:
IOException
JsonParseException

reportInvalidChar

protected IllegalArgumentException reportInvalidChar(Base64Variant b64variant,
                                                     char ch,
                                                     int bindex)
                                              throws IllegalArgumentException
Throws:
IllegalArgumentException

reportInvalidChar

protected IllegalArgumentException reportInvalidChar(Base64Variant b64variant,
                                                     char ch,
                                                     int bindex,
                                                     String msg)
                                              throws IllegalArgumentException
Parameters:
bindex - Relative index within base64 character unit; between 0 and 3 (as unit has exactly 4 characters)
Throws:
IllegalArgumentException