Package com.amazon.ion.impl

Class _Private_IonConstants

java.lang.Object
com.amazon.ion.impl._Private_IonConstants
public final class _Private_IonConstants extends Object
NOT FOR APPLICATION USE!

  • Field Details

    • BB_TOKEN_LEN

      public static final int BB_TOKEN_LEN
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    • BB_VAR_INT32_LEN_MAX

      public static final int BB_VAR_INT32_LEN_MAX
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    • BB_VAR_INT64_LEN_MAX

      public static final int BB_VAR_INT64_LEN_MAX
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    • BB_INT64_LEN_MAX

      public static final int BB_INT64_LEN_MAX
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    • BB_VAR_LEN_MIN

      public static final int BB_VAR_LEN_MIN
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    • BB_MAX_7BIT_INT

      public static final int BB_MAX_7BIT_INT
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    • INT32_SIZE

      public static final int INT32_SIZE
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    • MAX_LONG_TEXT_SIZE

      public static final int MAX_LONG_TEXT_SIZE
      maximum size of textual representation of a long.

    • high_surrogate_value

      public static final int high_surrogate_value
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    • low_surrogate_value

      public static final int low_surrogate_value
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    • surrogate_mask

      public static final int surrogate_mask
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    • surrogate_value_mask

      public static final int surrogate_value_mask
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    • surrogate_utf32_offset

      public static final int surrogate_utf32_offset
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    • surrogate_utf32_shift

      public static final int surrogate_utf32_shift
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    • BINARY_VERSION_MARKER_1_0

      public static final byte[] BINARY_VERSION_MARKER_1_0
      The byte sequence indicating use of Ion 1.0 binary format.

    • BINARY_VERSION_MARKER_SIZE

      public static final int BINARY_VERSION_MARKER_SIZE
      The number of bytes in BINARY_VERSION_MARKER_1_0.

    • tidNull

      public static final int tidNull
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    • tidBoolean

      public static final int tidBoolean
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    • tidPosInt

      public static final int tidPosInt
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    • tidNegInt

      public static final int tidNegInt
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    • tidFloat

      public static final int tidFloat
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    • tidDecimal

      public static final int tidDecimal
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    • tidTimestamp

      public static final int tidTimestamp
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    • tidSymbol

      public static final int tidSymbol
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    • tidString

      public static final int tidString
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    • tidClob

      public static final int tidClob
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    • tidBlob

      public static final int tidBlob
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    • tidList

      public static final int tidList
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    • tidSexp

      public static final int tidSexp
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    • tidStruct

      public static final int tidStruct
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    • tidTypedecl

      public static final int tidTypedecl
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    • tidUnused

      public static final int tidUnused
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    • tidDATAGRAM

      public static final int tidDATAGRAM
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    • tidNopPad

      public static final int tidNopPad
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    • lnIsNull

      public static final int lnIsNull
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    • lnIsNullAtom

      public static final int lnIsNullAtom
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    • lnIsNullSequence

      public static final int lnIsNullSequence
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    • lnIsNullStruct

      public static final int lnIsNullStruct
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    • lnIsEmptyContainer

      public static final int lnIsEmptyContainer
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    • lnIsOrderedStruct

      public static final int lnIsOrderedStruct
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    • lnIsVarLen

      public static final int lnIsVarLen
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    • lnBooleanTrue

      public static final int lnBooleanTrue
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    • lnBooleanFalse

      public static final int lnBooleanFalse
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    • lnNumericZero

      public static final int lnNumericZero
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    • True

      public static final int True

    • False

      public static final int False

    • UNKNOWN_SYMBOL_TEXT_PREFIX

      public static final String UNKNOWN_SYMBOL_TEXT_PREFIX
      Prefix string used in IonStructs' equality checks. When a IonValue's field name's text is unknown, this String is prepended to the field name's SID to coerce it to a string to be used as the key. This will eliminate collisions with IonValues with numbers as their field names.

      For example, these two IonValues (nested in the IonStructs) will have distinct keys: 

       {"$99":random_value},
 {$99:random_value}

      TODO amazon-ion/ion-java/issues/23 However, there is still a potential failure if one of the IonStruct's nested value has a field name with text " -- UNKNOWN SYMBOL TEXT -- $123", and that another nested value of an IonStruct has a field name with unknown text and sid 123, these two values will be considered a match within IonStruct's equality checks, which is wrong.

      See IonAssert for another use of this idiom.

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  • Method Details

    • makeUnicodeScalar

      public static final int makeUnicodeScalar(int high_surrogate, int low_surrogate)

    • makeHighSurrogate

      public static final int makeHighSurrogate(int unicodeScalar)

    • makeLowSurrogate

      public static final int makeLowSurrogate(int unicodeScalar)

    • isHighSurrogate

      public static final boolean isHighSurrogate(int c)

    • isLowSurrogate

      public static final boolean isLowSurrogate(int c)

    • isSurrogate

      public static final boolean isSurrogate(int c)

    • makeTypeDescriptor

      public static final int makeTypeDescriptor(int highNibble, int lowNibble)
      Make a type descriptor from two nibbles; all of which are represented as ints.
      Parameters:
      highNibble - must be a positive int between 0x00 and 0x0F.
      lowNibble - must be a positive int between 0x00 and 0x0F.
      Returns:
      the combined nibbles, between 0x00 and 0xFF.

    • getTypeCode

      public static final int getTypeCode(int td)
      Extract the type code (high nibble) from a type descriptor.
      Parameters:
      td - must be a positive int between 0x00 and 0xFF.
      Returns:
      the high nibble of the input byte, between 0x00 and 0x0F.

    • getLowNibble

      public static final int getLowNibble(int td)