Package ghidra.program.model.data

Interface DataType

All Known Subinterfaces:
Array, ArrayStringable, BuiltInDataType, Composite, CompositeInternal, DataTypeWithCharset, Dynamic, Enum, FactoryDataType, FunctionDefinition, Pointer, Structure, StructureInternal, TypeDef, Union, UnionInternal
All Known Implementing Classes:
AbstractComplexDataType, AbstractDataType, AbstractFloatDataType, AbstractIntegerDataType, AbstractLeb128DataType, AbstractPointerTypedefBuiltIn, AbstractSignedIntegerDataType, AbstractStringDataType, AbstractUnsignedIntegerDataType, AIFFDataType, AlignmentDataType, AndroidElfRelocationTableDataType, ArrayDataType, AUDataType, BadDataType, BitFieldDataType, BitmapResourceDataType, BooleanDataType, BuiltIn, ByteDataType, CharDataType, CliAbstractSig.CliTypeCodeDataType, CliBlobMarshalSpec.CliNativeTypeDataType, CliBlobMarshalSpec.CliSafeArrayElemTypeDataType, CliFlags.CliEnumAssemblyFlags, CliFlags.CliEnumAssemblyHashAlgorithm, CliFlags.CliEnumEventAttributes, CliFlags.CliEnumFieldAttributes, CliFlags.CliEnumFileAttributes, CliFlags.CliEnumGenericParamAttributes, CliFlags.CliEnumManifestResourceAttributes, CliFlags.CliEnumMethodAttributes, CliFlags.CliEnumMethodImplAttributes, CliFlags.CliEnumMethodSemanticsAttributes, CliFlags.CliEnumParamAttributes, CliFlags.CliEnumPInvokeAttributes, CliFlags.CliEnumPropertyAttributes, CliFlags.CliEnumTypeAttributes, Complex16DataType, Complex32DataType, Complex8DataType, CompositeDataTypeImpl, CountedDynamicDataType, DataTypeImpl, DefaultDataType, DialogResourceDataType, DoubleComplexDataType, DoubleDataType, DwarfEncodingModeDataType, DWordDataType, DynamicDataType, ElfDataType, EnumDataType, FactoryStructureDataType, FileTimeDataType, Float10DataType, Float16DataType, Float2DataType, Float4DataType, Float8DataType, FloatComplexDataType, FloatDataType, FunctionDefinitionDataType, FunctionSignatureImpl, GenericDataType, GifDataType, GroupIconResourceDataType, GuidDataType, HTMLResourceDataType, IBO32DataType, IBO64DataType, IconMaskResourceDataType, IconResourceDataType, ImageCor20Header.ImageCor20Flags, IndexedDynamicDataType, Integer16DataType, Integer3DataType, Integer5DataType, Integer6DataType, Integer7DataType, IntegerDataType, JPEGDataType, LongDataType, LongDoubleComplexDataType, LongDoubleDataType, LongLongDataType, MacintoshTimeStampDataType, MenuResourceDataType, MIDIDataType, MissingBuiltInDataType, MUIResourceDataType, PartialUnion, PascalString255DataType, PascalStringDataType, PascalUnicodeDataType, PcRelative31AddressDataType, PeDataType, PERichTableDataType, PEx64UnwindInfoDataType, PngDataType, Pointer16DataType, Pointer24DataType, Pointer32DataType, Pointer40DataType, Pointer48DataType, Pointer56DataType, Pointer64DataType, Pointer8DataType, PointerDataType, PointerTypedef, QWordDataType, RepeatCountDataType, RepeatedDynamicDataType, RepeatedStringDataType, RTTI0DataType, RTTI1DataType, RTTI2DataType, RTTI3DataType, RTTI4DataType, RTTIDataType, SegmentedCodePointerDataType, ShiftedAddressDataType, ShortDataType, SignedByteDataType, SignedCharDataType, SignedDWordDataType, SignedLeb128DataType, SignedQWordDataType, SignedWordDataType, StringDataType, StringUTF8DataType, StructureDataType, StructuredDynamicDataType, TerminatedStringDataType, TerminatedUnicode32DataType, TerminatedUnicodeDataType, TypedefDataType, Undefined, Undefined1DataType, Undefined2DataType, Undefined3DataType, Undefined4DataType, Undefined5DataType, Undefined6DataType, Undefined7DataType, Undefined8DataType, Unicode32DataType, UnicodeDataType, UnionDataType, UnsignedCharDataType, UnsignedInteger16DataType, UnsignedInteger3DataType, UnsignedInteger5DataType, UnsignedInteger6DataType, UnsignedInteger7DataType, UnsignedIntegerDataType, UnsignedLeb128DataType, UnsignedLongDataType, UnsignedLongLongDataType, UnsignedShortDataType, VoidDataType, WAVEDataType, WEVTResourceDataType, WideChar16DataType, WideChar32DataType, WideCharDataType, WordDataType
public interface DataType
The interface that all datatypes must implement.

  • Field Details

  • Method Details

    • hasLanguageDependantLength

      boolean hasLanguageDependantLength()
      Indicates if the length of this data-type is determined based upon the DataOrganization obtained from the associated DataTypeManager.
      Returns:
      true length is language/compiler-specification dependent, else false

    • getSettingsDefinitions

      SettingsDefinition[] getSettingsDefinitions()
      Get the list of settings definitions available for use with this datatype.

      In the case of a TypeDef, the return list will include the TypeDefSettingsDefinition list from the associated base data type.

      Unlike TypeDefSettingsDefinition standard settings definitions generally support default, component-default and data-instance use. In addition, standard settings definitions are never considered during isEquivalent(DataType) checking or during the resolve process.

      Returns:
      list of the settings definitions for this datatype.

    • getTypeDefSettingsDefinitions

      TypeDefSettingsDefinition[] getTypeDefSettingsDefinitions()
      Get the list of all settings definitions for this datatype that may be used for an associated TypeDef. When used for an associated TypeDef, these settings will be considered during a isEquivalent(DataType) check and will be preserved during the resolve process.
      Returns:
      a list of the settings definitions for a TypeDef associated with this datatype.

    • getDefaultSettings

      Settings getDefaultSettings()
      Gets the settings for this data type. The settings may have underlying default settings and may in turn become defaults for instance-specific settings (e.g., Data or DataTypeComponent). It is important to note that these settings are tied to a specific DataType instantiation so it is important to understand the scope of its use. Example: The BuiltInDataTypeManager has its own set of DataType instances which are separate from those which have been instantiated or resolved to a specific Program/Archive DataTypeManager. Settings manipulation may be disabled by default in some instances.
      Returns:
      the settings for this dataType.

    • clone

      DataType clone(DataTypeManager dtm)
      Returns an instance of this DataType using the specified DataTypeManager to allow its use of the corresponding DataOrganization while retaining its unique identity (see getUniversalID() and archive association (see getSourceArchive()) if applicable.

      This instance will be returned if this datatype's DataTypeManager matches the specified dtm. The recursion depth of a clone will stop on any datatype whose DataTypeManager matches the specified dtm and simply use the existing datatype instance.

      NOTE: In general, this method should not be used to obtain an instance to be modified. In most cases changes may be made directly to this instance if supported or to a copy(DataTypeManager) of this type.

      Parameters:
      dtm - the data-type manager instance whose data-organization should apply.
      Returns:
      cloned instance which may be the same as this instance

    • copy

      DataType copy(DataTypeManager dtm)
      Returns a new instance (shallow copy) of this DataType with a new identity and no source archive association.

      Any reference to other datatypes will use clone(DataTypeManager).

      Parameters:
      dtm - the data-type manager instance whose data-organization should apply.
      Returns:
      new instanceof of this datatype

    • getCategoryPath

      CategoryPath getCategoryPath()
      Gets the categoryPath associated with this datatype
      Returns:
      the datatype's category path

    • getDataTypePath

      DataTypePath getDataTypePath()
      Returns the dataTypePath for this datatype;
      Returns:
      the dataTypePath for this datatype;

    • setCategoryPath

      void setCategoryPath(CategoryPath path) throws DuplicateNameException
      Set the categoryPath associated with this datatype
      Parameters:
      path - the new path
      Throws:
      DuplicateNameException - if an attempt to place this datatype into the specified category resulted in a name collision. This should not occur for non-DB DataType instances.

    • getDataTypeManager

      DataTypeManager getDataTypeManager()
      Get the DataTypeManager containing this datatype.

      This association should not be used to indicate whether this DataType has been resolved, but is intended to indicate whether the appropriate DataOrganization is being used.

      Returns:
      the DataTypeManager that is associated with this datatype.

    • getDisplayName

      String getDisplayName()
      Gets the name for referring to this datatype.
      Returns:
      generic name for this Data Type (i.e.: Word)

    • getName

      String getName()
      Get the name of this datatype.
      Returns:
      the name

    • getPathName

      String getPathName()
      Get the full category path name that includes this datatype's name.

      If the category is null, then this just the datatype's name is returned.

      Returns:
      the path, or just this type's name

    • setName

      void setName(String name) throws InvalidNameException, DuplicateNameException
      Sets the name of the datatype
      Parameters:
      name - the new name for this datatype.
      Throws:
      InvalidNameException - if the given name does not form a valid name.
      DuplicateNameException - if name change on stored DataType is a duplicate of another datatype within the same category (only applies to DB stored DataType).

    • setNameAndCategory

      void setNameAndCategory(CategoryPath path, String name) throws InvalidNameException, DuplicateNameException
      Sets the name and category of a datatype at the same time.
      Parameters:
      path - the new category path.
      name - the new name
      Throws:
      InvalidNameException - if the name is invalid
      DuplicateNameException - if name change on stored DataType is a duplicate of another datatype within the same category (only applies to DB stored DataType).

    • getMnemonic

      String getMnemonic(Settings settings)
      Get the mnemonic for this DataType.
      Parameters:
      settings - settings which may influence the result or null
      Returns:
      the mnemonic for this DataType.

    • getLength

      int getLength()
      Get the length of this DataType as a number of 8-bit bytes.

      For primitive datatypes this reflects the smallest varnode which can be used to contain its value (i.e., raw data length).

      Example: For x86 32-bit gcc an 80-bit long double raw data length of 10-bytes will fit within a floating point register while its aligned-length of 12-bytes is used by the gcc compiler for data/array/component allocations to maintain alignment (i.e., sizeof(long double) ).

      NOTE: Other than the VoidDataType, no datatype should ever return 0, even if isZeroLength(), and only Dynamic/FactoryDataType datatypes should return -1. If isZeroLength() is true a length of 1 should be returned. Where a zero-length datatype can be handled (e.g., Composite) the isZeroLength() method should be used.

      Returns:
      the length of this DataType

    • getAlignedLength

      int getAlignedLength()
      Get the aligned-length of this datatype as a number of 8-bit bytes.

      For primitive datatypes this is equivalent to the C/C++ "sizeof" operation within source code and should be used when determining Array element length or component sizing for a Composite. For Pointer, Composite and Array types this will return the same value as getLength().

      Example: For x86 32-bit gcc an 80-bit long double raw data length of 10-bytes will fit within a floating point register while its aligned-length of 12-bytes is used by the gcc compiler for data/array/component allocations to maintain alignment (i.e., sizeof(long double) ).

      NOTE: Other than the VoidDataType, no datatype should ever return 0, even if isZeroLength(), and only Dynamic / FactoryDataType / FunctionDefinition datatypes should return -1. If isZeroLength() is true a length of 1 should be returned.

      Returns:
      byte length of binary encoding.

    • isZeroLength

      boolean isZeroLength()
      Indicates this datatype is defined with a zero length.

      This method should not be confused with isNotYetDefined() which indicates that nothing but the name and basic type is known.

      NOTE: a zero-length datatype must return a length of 1 via getLength(). Zero-length datatypes used as a component within a Composite may, or may not, be assigned a component length of 0. The method DataTypeComponent.usesZeroLengthComponent(DataType) is used to make this determination.

      Returns:
      true if type definition has a length of 0, else false

    • isNotYetDefined

      boolean isNotYetDefined()
      Indicates if this datatype has not yet been fully defined.

      Such datatypes should always return a getLength() of 1 and true for isZeroLength(). (example: empty structure)

      Returns:
      true if this type is not yet defined.

    • getDescription

      String getDescription()
      Get a String briefly describing this DataType.
      Returns:
      a one-liner describing this DataType.

    • setDescription

      void setDescription(String description) throws UnsupportedOperationException
      Sets a String briefly describing this DataType.
      Parameters:
      description - a one-liner describing this DataType.
      Throws:
      UnsupportedOperationException - if the description is not allowed to be set for this datatype.

    • getValue

      Object getValue(MemBuffer buf, Settings settings, int length)
      Returns the interpreted data value as an instance of the advertised value class.

      For instance, Pointer data types should return an Address object (or null), or integer data types should return a Scalar object.

      Parameters:
      buf - the data buffer
      settings - the settings to use.
      length - indicates the maximum number of bytes that may be consumed by a Dynamic datatype, otherwise this value is ignored. A value of -1 may be specified to allow a Dynamic datatype to determine the length based upon the actual data bytes
      Returns:
      the data object, or null if data is invalid

    • isEncodable

      boolean isEncodable()
      Check if this type supports encoding (patching)

      If unsupported, encodeValue(Object, MemBuffer, Settings, int) and encodeRepresentation(String, MemBuffer, Settings, int) will always throw an exception. Actions which rely on either encode method should not be displayed if the applicable datatype is not encodable.

      Returns:
      true if encoding is supported

    • encodeValue

      byte[] encodeValue(Object value, MemBuffer buf, Settings settings, int length) throws DataTypeEncodeException
      Encode bytes from an Object appropriate for this DataType.

      Converts the given object to the byte encoding and returns it. When appropriate, this should seek the nearest encoding to the specified value, since the object may come from a user script. For example, a floating-point value may be rounded. Invalid values should be rejected with a DataTypeEncodeException.

      Parameters:
      value - the desired value.
      buf - a buffer representing the eventual destination of the bytes.
      settings - the settings to use.
      length - the expected length of the result, usually the length of the data unit, or -1 to let the type choose the length. It may be ignored, e.g., for fixed-length types.
      Returns:
      the encoded value.
      Throws:
      DataTypeEncodeException - if the value cannot be encoded for any reason, e.g., incorrect type, not enough space, buffer overflow, unsupported (see isEncodable()).

    • getValueClass

      Class<?> getValueClass(Settings settings)
      Get the Class of the value Object to be returned by this datatype (see getValue(MemBuffer, Settings, int)).
      Parameters:
      settings - the relevant settings to use or null for default.
      Returns:
      Class of the value to be returned by this datatype or null if it can vary or is unspecified. Types which correspond to a string or char array will return the String class.

    • getDefaultLabelPrefix

      String getDefaultLabelPrefix()
      Returns the appropriate string to use as the default label prefix in the absence of any data.
      Returns:
      the default label prefix or null if none specified.

    • getDefaultAbbreviatedLabelPrefix

      String getDefaultAbbreviatedLabelPrefix()
      Returns the prefix to use for this datatype when an abbreviated prefix is desired.

      For example, some datatypes will build a large default label, at which it is more desirable to have a shortened prefix.

      Returns:
      the prefix to use for this datatype when an abbreviated prefix is desired. May return null.

    • getDefaultLabelPrefix

      String getDefaultLabelPrefix(MemBuffer buf, Settings settings, int len, DataTypeDisplayOptions options)
      Returns the appropriate string to use as the default label prefix.
      Parameters:
      buf - memory buffer containing the bytes.
      settings - the Settings object
      len - the length of the data.
      options - options for how to format the default label prefix.
      Returns:
      the default label prefix or null if none specified.

    • getDefaultOffcutLabelPrefix

      String getDefaultOffcutLabelPrefix(MemBuffer buf, Settings settings, int len, DataTypeDisplayOptions options, int offcutOffset)
      Returns the appropriate string to use as the default label prefix.

      This takes into account the fact that there exists a reference to the data that references offcutLength bytes into this type

      Parameters:
      buf - memory buffer containing the bytes.
      settings - the Settings object
      len - the length of the data.
      options - options for how to format the default label prefix.
      offcutOffset - offset into datatype
      Returns:
      the default label prefix.

    • getRepresentation

      String getRepresentation(MemBuffer buf, Settings settings, int length)
      Get bytes from memory in a printable format for this type.
      Parameters:
      buf - the data.
      settings - the settings to use for the representation.
      length - the number of bytes to represent.
      Returns:
      the representation of the data in this format, never null.

    • encodeRepresentation

      byte[] encodeRepresentation(String repr, MemBuffer buf, Settings settings, int length) throws DataTypeEncodeException
      Encode bytes according to the display format for this type.

      Converts the given representation to the byte encoding and returns it. When appropriate, this should seek the nearest encoding to the specified value, since the representation is likely coming from user input. For example, a floating-point value may be rounded. Invalid representations should be rejected with a DataTypeEncodeException.

      Parameters:
      repr - the representation of the desired value, as in getRepresentation(MemBuffer, Settings, int). The supported formats depend on the specific datatype and its settings.
      buf - a buffer representing the eventual destination of the bytes.
      settings - the settings to use for the representation.
      length - the expected length of the result, usually the length of the data unit, or -1 to let the type choose the length. It may be ignored, e.g., for fixed-length types.
      Returns:
      the encoded value.
      Throws:
      DataTypeEncodeException - if the value cannot be encoded for any reason, e.g., incorrect format, not enough space, buffer overflow, unsupported (see isEncodable()).

    • isDeleted

      boolean isDeleted()
      Returns true if this datatype has been deleted and is no longer valid
      Returns:
      true if this datatype has been deleted and is no longer valid.

    • isEquivalent

      boolean isEquivalent(DataType dt)
      Check if the given datatype is equivalent to this datatype.

      The precise meaning of "equivalent" is datatype dependent.
      NOTE: if invoked by a DB object or manager it should be invoked on the DataTypeDB object passing the other datatype as the argument.

      Parameters:
      dt - the datatype being tested for equivalence.
      Returns:
      true if the if the given datatype is equivalent to this datatype.

    • dataTypeSizeChanged

      void dataTypeSizeChanged(DataType dt)
      Notification that the given datatype's size has changed.

      DataTypes may need to make internal changes in response.
      TODO: This method is reserved for internal DB use.

      Parameters:
      dt - the datatype that has changed.

    • dataTypeAlignmentChanged

      void dataTypeAlignmentChanged(DataType dt)
      Notification that the given datatype's alignment has changed.

      DataTypes may need to make internal changes in response.
      TODO: This method is reserved for internal DB use.

      Parameters:
      dt - the datatype that has changed.

    • dataTypeDeleted

      void dataTypeDeleted(DataType dt)
      Informs this datatype that the given datatype has been deleted.

      TODO: This method is reserved for internal DB use.

      Parameters:
      dt - the datatype that has been deleted.

    • dataTypeReplaced

      void dataTypeReplaced(DataType oldDt, DataType newDt)
      Informs this datatype that the given oldDT has been replaced with newDT

      TODO: This method is reserved for internal DB use.

      Parameters:
      oldDt - old datatype
      newDt - new datatype

    • addParent

      void addParent(DataType dt)
      Inform this data type that it has the given parent
      TODO: This method is reserved for internal DB use.
      Parameters:
      dt - parent data type

    • removeParent

      void removeParent(DataType dt)
      Remove a parent datatype

      TODO: This method is reserved for internal DB use.

      Parameters:
      dt - parent datatype

    • dataTypeNameChanged

      void dataTypeNameChanged(DataType dt, String oldName)
      Informs this datatype that its name has changed from the indicated old name.

      TODO: This method is reserved for internal DB use.

      Parameters:
      dt - the datatype whose name changed
      oldName - the datatype's old name

    • getParents

      Collection<DataType> getParents()
      Get the parents of this datatype. NOTE: This method is intended to be used on a DB-managed datatype only and is not fully supported for use with non-DB datatype instances.
      Returns:
      parents of this datatype

    • getAlignment

      int getAlignment()
      Gets the alignment to be used when aligning this datatype within another datatype.
      Returns:
      this datatype's alignment.

    • dependsOn

      boolean dependsOn(DataType dt)
      Check if this datatype depends on the existence of the given datatype.

      For example byte[] depends on byte. If byte were deleted, then byte[] would also be deleted.

      Parameters:
      dt - the datatype to test that this datatype depends on.
      Returns:
      true if the existence of this datatype relies on the existence of the specified datatype dt.

    • getSourceArchive

      SourceArchive getSourceArchive()
      Get the source archive where this type originated
      Returns:
      source archive object

    • setSourceArchive

      void setSourceArchive(SourceArchive archive)
      Set the source archive where this type originated
      Parameters:
      archive - source archive object

    • getLastChangeTime

      long getLastChangeTime()
      Get the timestamp corresponding to the last time this type was changed within its datatype manager
      Returns:
      timestamp of last change within datatype manager

    • getLastChangeTimeInSourceArchive

      long getLastChangeTimeInSourceArchive()
      Get the timestamp corresponding to the last time this type was sync'd within its source archive
      Returns:
      timestamp of last sync with source archive

    • getUniversalID

      UniversalID getUniversalID()
      Get the universal ID for this datatype.

      This value is intended to be a unique identifier across all programs and archives. The same ID indicates that two datatypes were originally the same one. Keep in mind names, categories, and component makeup may differ and have changed since there origin.

      Returns:
      datatype UniversalID

    • replaceWith

      void replaceWith(DataType dataType)
      For datatypes that support change, this method replaces the internals of this datatype with the internals of the given datatype.

      The datatypes must be of the same "type" (i.e. structure can only be replacedWith another structure.

      Parameters:
      dataType - the datatype that contains the internals to upgrade to.
      Throws:
      UnsupportedOperationException - if the datatype does not support change.
      IllegalArgumentException - if the given datatype is not the same type as this datatype.

    • setLastChangeTime

      void setLastChangeTime(long lastChangeTime)
      Sets the lastChangeTime for this datatype.

      Normally, this is updated automatically when a datatype is changed, but when committing or updating while synchronizing an archive, the lastChangeTime may need to be updated externally.

      Parameters:
      lastChangeTime - the time to use as the lastChangeTime for this datatype

    • setLastChangeTimeInSourceArchive

      void setLastChangeTimeInSourceArchive(long lastChangeTimeInSourceArchive)
      Sets the lastChangeTimeInSourceArchive for this datatype.

      This is used by when a datatype change is committed back to its source archive.

      Parameters:
      lastChangeTimeInSourceArchive - the time to use as the lastChangeTimeInSourceArchive for this datatype

    • getDataOrganization

      DataOrganization getDataOrganization()
      Returns the DataOrganization associated with this data-type
      Returns:
      associated data organization