org.codehaus.jackson.impl
Class ReaderBasedNumericParser

java.lang.Object
  org.codehaus.jackson.JsonParser
      org.codehaus.jackson.impl.JsonParserBase
          org.codehaus.jackson.impl.JsonNumericParserBase
              org.codehaus.jackson.impl.ReaderBasedParserBase
                  org.codehaus.jackson.impl.ReaderBasedNumericParser

Direct Known Subclasses:

ReaderBasedParser

public abstract class ReaderBasedNumericParser
extends ReaderBasedParserBase

Intermediate class that implements handling of numeric parsing. Separate from the actual parser class just to isolate numeric parsing: would be nice to use aggregation, but unfortunately many parts are hard to implement without direct access to underlying buffers.

Nested Class Summary

Nested classes/interfaces inherited from class org.codehaus.jackson.JsonParser

JsonParser.Feature, JsonParser.NumberType

Field Summary

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

ReaderBasedNumericParser(IOContext pc, int features, java.io.Reader r)

Method Summary

protected JsonToken

parseNumberText(int ch) Initial parsing method for number values.

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, _decodeBase64, _finishString, _getByteArrayBuilder, _getCharDesc, _handleEOF, _reportError, _reportInvalidEOF, _reportInvalidEOF, _reportMismatchedEndMarker, _reportUnexpectedChar, _throwInternal, _throwInvalidSpace, _throwUnquotedSpace, _wrapError, close, getBinaryValue, getCurrentLocation, getCurrentName, getParsingContext, getText, getTextCharacters, getTextLength, getTextOffset, getTokenCharacterOffset, getTokenColumnNr, getTokenLineNr, getTokenLocation, isClosed, loadMoreGuaranteed, nextToken, nextValue, skipChildren

Methods inherited from class org.codehaus.jackson.JsonParser

clearCurrentToken, disableFeature, enableFeature, getBinaryValue, getCurrentToken, getLastClearedToken, hasCurrentToken, isFeatureEnabled, readValueAs, readValueAs, readValueAsTree, setFeature

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ReaderBasedNumericParser

public ReaderBasedNumericParser(IOContext pc,
                                int features,
                                java.io.Reader r)

Method Detail

parseNumberText

protected final JsonToken parseNumberText(int ch)
                                   throws java.io.IOException,
                                          JsonParseException

Initial parsing method for number values. It needs to be able to parse enough input to be able to determine whether the value is to be considered a simple integer value, or a more generic decimal value: latter of which needs to be expressed as a floating point number. The basic rule is that if the number has no fractional or exponential part, it is an integer; otherwise a floating point number.

Because much of input has to be processed in any case, no partial parsing is done: all input text will be stored for further processing. However, actual numeric value conversion will be deferred, since it is usually the most complicated and costliest part of processing.

Specified by:

parseNumberText in class JsonNumericParserBase

Throws:

java.io.IOException

JsonParseException