Package ghidra.program.model.data

Class TypedefDataType

java.lang.Object

ghidra.program.model.data.AbstractDataType

ghidra.program.model.data.DataTypeImpl

ghidra.program.model.data.GenericDataType

ghidra.program.model.data.TypedefDataType

All Implemented Interfaces:

DataType, TypeDef

public class TypedefDataType
extends GenericDataType
implements TypeDef

Basic implementation for the typedef dataType

Field Summary

Fields inherited from class ghidra.program.model.data.DataTypeImpl

defaultSettings

Fields inherited from class ghidra.program.model.data.AbstractDataType

categoryPath, dataMgr, name

Fields inherited from interface ghidra.program.model.data.DataType

CONFLICT_SUFFIX, DEFAULT, NO_LAST_CHANGE_TIME, NO_SOURCE_SYNC_TIME, VOID

Constructor Summary

Constructors

Constructor	Description
TypedefDataType(CategoryPath path, java.lang.String name, DataType dt)	Construct a new typedef.
TypedefDataType(CategoryPath path, java.lang.String name, DataType dt, DataTypeManager dtm)	Construct a new typedef.
TypedefDataType(CategoryPath path, java.lang.String name, DataType dt, UniversalID universalID, SourceArchive sourceArchive, long lastChangeTime, long lastChangeTimeInSourceArchive, DataTypeManager dtm)	Construct a new typedef.
TypedefDataType(java.lang.String name, DataType dt)	Construct a new typedef within the root category

Method Summary

Modifier and Type	Method	Description
DataType	clone(DataTypeManager dtm)	Returns an instance of this DataType with its universalID and SourceArchive identity retained.
DataType	copy(DataTypeManager dtm)	Returns a new instance (shallow copy) of this DataType with a new identity.
void	dataTypeAlignmentChanged(DataType dt)	Notification that the given datatype's alignment has changed.
void	dataTypeDeleted(DataType dt)	Informs this datatype that the given datatype has been deleted.
void	dataTypeNameChanged(DataType dt, java.lang.String oldName)	Informs this datatype that its name has changed from the indicated old name.
void	dataTypeReplaced(DataType oldDt, DataType newDt)	Informs this datatype that the given oldDT has been replaced with newDT
void	dataTypeSizeChanged(DataType dt)	Notification that the given datatype's size has changed.
boolean	dependsOn(DataType dt)	Check if this datatype depends on the existence of the given datatype.
DataType	getBaseDataType()	Returns the non-typedef dataType that this typedef is based on, following chains of typedefs as necessary.
DataType	getDataType()	Returns the dataType that this typedef is based on.
java.lang.String	getDefaultLabelPrefix()	Returns the appropriate string to use as the default label prefix in the absence of any data.
java.lang.String	getDescription()	Get a String briefly describing this DataType.
int	getLength()	Get the length (number of 8-bit bytes) of this DataType.
java.lang.String	getMnemonic(Settings settings)	Get the mnemonic for this DataType.
java.lang.String	getRepresentation(MemBuffer buf, Settings settings, int length)	Get bytes from memory in a printable format for this type.
SettingsDefinition[]	getSettingsDefinitions()	Gets a list of all the settingsDefinitions used by this datatype.
java.lang.Object	getValue(MemBuffer buf, Settings settings, int length)	Get the data in the form of the appropriate Object for this DataType.
java.lang.Class<?>	getValueClass(Settings settings)	Get the Class of the value to be returned by this datatype.
boolean	hasLanguageDependantLength()	Indicates if the length of this data-type is determined based upon the DataOrganization obtained from the associated DataTypeManager.
boolean	isDeleted()	Returns true if this datatype has been deleted and is no longer valid
boolean	isEquivalent(DataType obj)	Check if the given datatype is equivalent to this datatype.
boolean	isZeroLength()	Indicates this datatype is defined with a zero length.
java.lang.String	toString()

Methods inherited from class ghidra.program.model.data.GenericDataType

setCategoryPath, setName, setNameAndCategory

Methods inherited from class ghidra.program.model.data.DataTypeImpl

addParent, equals, getAlignment, getDefaultSettings, getLastChangeTime, getLastChangeTimeInSourceArchive, getParents, getPathName, getSourceArchive, getUniversalID, hashCode, notifyAlignmentChanged, notifyDeleted, notifyNameChanged, notifyParents, notifyReplaced, notifySizeChanged, removeParent, replaceWith, setDefaultSettings, setDescription, setLastChangeTime, setLastChangeTimeInSourceArchive, setSourceArchive

Methods inherited from class ghidra.program.model.data.AbstractDataType

encodeRepresentation, encodeValue, getCategoryPath, getDataOrganization, getDataTypeManager, getDataTypePath, getDefaultAbbreviatedLabelPrefix, getDefaultLabelPrefix, getDefaultOffcutLabelPrefix, getDisplayName, getDocs, getName, isEncodable, isNotYetDefined

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface ghidra.program.model.data.DataType

addParent, encodeRepresentation, encodeValue, getAlignment, getCategoryPath, getDataOrganization, getDataTypeManager, getDataTypePath, getDefaultAbbreviatedLabelPrefix, getDefaultLabelPrefix, getDefaultOffcutLabelPrefix, getDefaultSettings, getDisplayName, getDocs, getLastChangeTime, getLastChangeTimeInSourceArchive, getName, getParents, getPathName, getSourceArchive, getUniversalID, isEncodable, isNotYetDefined, removeParent, replaceWith, setCategoryPath, setDefaultSettings, setDescription, setLastChangeTime, setLastChangeTimeInSourceArchive, setName, setNameAndCategory, setSourceArchive

Constructor Detail

TypedefDataType

public TypedefDataType(java.lang.String name,
                       DataType dt)

Construct a new typedef within the root category

Parameters:

name - name of this typedef

dt - data type that is being typedef'ed (may not be null)

TypedefDataType

public TypedefDataType(CategoryPath path,
                       java.lang.String name,
                       DataType dt)

Construct a new typedef.

Parameters:

path - category path for this datatype

name - name of this typedef

dt - data type that is being typedef'ed (may not be null)

TypedefDataType

public TypedefDataType(CategoryPath path,
                       java.lang.String name,
                       DataType dt,
                       DataTypeManager dtm)

Construct a new typedef.

Parameters:

path - category path for this datatype

name - name of this typedef

dt - data type that is being typedef'ed (may not be null)

dtm - the data type manager associated with this data type. This can be null.

TypedefDataType

public TypedefDataType(CategoryPath path,
                       java.lang.String name,
                       DataType dt,
                       UniversalID universalID,
                       SourceArchive sourceArchive,
                       long lastChangeTime,
                       long lastChangeTimeInSourceArchive,
                       DataTypeManager dtm)

Construct a new typedef.

Parameters:

path - category path for this datatype

name - name of this typedef

dt - data type that is being typedef'ed (may not be null)

universalID - the id for the data type

sourceArchive - the source archive for this data type

lastChangeTime - the last time this data type was changed

lastChangeTimeInSourceArchive - the last time this data type was changed in its source archive.

dtm - the data type manager associated with this data type. This can be null.

Method Detail

getDefaultLabelPrefix

public java.lang.String getDefaultLabelPrefix()

Description copied from interface: DataType

Returns the appropriate string to use as the default label prefix in the absence of any data.

Specified by:

getDefaultLabelPrefix in interface DataType

Overrides:

getDefaultLabelPrefix in class AbstractDataType

Returns:

the default label prefix or null if none specified.

hasLanguageDependantLength

public boolean hasLanguageDependantLength()

Description copied from interface: DataType

Indicates if the length of this data-type is determined based upon the DataOrganization obtained from the associated DataTypeManager.

Specified by:

hasLanguageDependantLength in interface DataType

Overrides:

hasLanguageDependantLength in class AbstractDataType

Returns:

true length is language/compiler-specification dependent, else false

isEquivalent

public boolean isEquivalent(DataType obj)

Description copied from interface: DataType

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.

Specified by:

isEquivalent in interface DataType

Parameters:

obj - the datatype being tested for equivalence.

Returns:

true if the if the given datatype is equivalent to this datatype.

getMnemonic

public java.lang.String getMnemonic(Settings settings)

Description copied from interface: DataType

Get the mnemonic for this DataType.

Specified by:

getMnemonic in interface DataType

Overrides:

getMnemonic in class AbstractDataType

Parameters:

settings - settings which may influence the result or null

Returns:

the mnemonic for this DataType.

getDataType

public DataType getDataType()

Description copied from interface: TypeDef

Returns the dataType that this typedef is based on. This could be another typedef

Specified by:

getDataType in interface TypeDef

getDescription

public java.lang.String getDescription()

Description copied from interface: DataType

Get a String briefly describing this DataType.

Specified by:

getDescription in interface DataType

Returns:

a one-liner describing this DataType.

isZeroLength

public boolean isZeroLength()

Description copied from interface: DataType

Indicates this datatype is defined with a zero length.

This method should not be confused with DataType.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 DataType.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.

Specified by:

isZeroLength in interface DataType

Overrides:

isZeroLength in class AbstractDataType

Returns:

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

getLength

public int getLength()

Description copied from interface: DataType

Get the length (number of 8-bit bytes) of this DataType.

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

Specified by:

getLength in interface DataType

Returns:

the length of this DataType

getRepresentation

public java.lang.String getRepresentation(MemBuffer buf,
                                          Settings settings,
                                          int length)

Description copied from interface: DataType

Get bytes from memory in a printable format for this type.

Specified by:

getRepresentation in interface DataType

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.

getValue

public java.lang.Object getValue(MemBuffer buf,
                                 Settings settings,
                                 int length)

Description copied from interface: DataType

Get the data in the form of the appropriate Object for this DataType.

For instance if the datatype is an AddressDT, return an Address object. a Byte, return a Scalar* (maybe this should be a Byte) a Float, return a Float

Specified by:

getValue in interface DataType

Parameters:

buf - the data buffer.

settings - the settings to use.

length - the number of bytes to get the value from.

Returns:

the data Object.

getValueClass

public java.lang.Class<?> getValueClass(Settings settings)

Description copied from interface: DataType

Get the Class of the value to be returned by this datatype.

Specified by:

getValueClass in interface DataType

Overrides:

getValueClass in class DataTypeImpl

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.

clone

public DataType clone(DataTypeManager dtm)

Description copied from interface: DataType

Returns an instance of this DataType with its universalID and SourceArchive identity retained.

The current instanceof 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.

Specified by:

clone in interface DataType

Parameters:

dtm - the data-type manager instance whose data-organization should apply.

Returns:

cloned instance which may be the same as this instance

copy

public DataType copy(DataTypeManager dtm)

Description copied from interface: DataType

Returns a new instance (shallow copy) of this DataType with a new identity.

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

Specified by:

copy in interface DataType

Parameters:

dtm - the data-type manager instance whose data-organization should apply.

Returns:

new instanceof of this datatype

dataTypeSizeChanged

public void dataTypeSizeChanged(DataType dt)

Description copied from interface: DataType

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.

Specified by:

dataTypeSizeChanged in interface DataType

Overrides:

dataTypeSizeChanged in class AbstractDataType

Parameters:

dt - the datatype that has changed.

dataTypeAlignmentChanged

public void dataTypeAlignmentChanged(DataType dt)

Description copied from interface: DataType

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.

Specified by:

dataTypeAlignmentChanged in interface DataType

Overrides:

dataTypeAlignmentChanged in class AbstractDataType

Parameters:

dt - the datatype that has changed.

getBaseDataType

public DataType getBaseDataType()

Description copied from interface: TypeDef

Returns the non-typedef dataType that this typedef is based on, following chains of typedefs as necessary.

Specified by:

getBaseDataType in interface TypeDef

dataTypeDeleted

public void dataTypeDeleted(DataType dt)

Description copied from interface: DataType

Informs this datatype that the given datatype has been deleted.

TODO: This method is reserved for internal DB use.

Specified by:

dataTypeDeleted in interface DataType

Overrides:

dataTypeDeleted in class AbstractDataType

Parameters:

dt - the datatype that has been deleted.

isDeleted

public boolean isDeleted()

Description copied from interface: DataType

Returns true if this datatype has been deleted and is no longer valid

Specified by:

isDeleted in interface DataType

Overrides:

isDeleted in class AbstractDataType

Returns:

true if this datatype has been deleted and is no longer valid.

getSettingsDefinitions

public SettingsDefinition[] getSettingsDefinitions()

Description copied from interface: DataType

Gets a list of all the settingsDefinitions used by this datatype.

Specified by:

getSettingsDefinitions in interface DataType

Overrides:

getSettingsDefinitions in class DataTypeImpl

Returns:

a list of the settingsDefinitions used by this datatype.

dataTypeReplaced

public void dataTypeReplaced(DataType oldDt,
                             DataType newDt)

Description copied from interface: DataType

Informs this datatype that the given oldDT has been replaced with newDT

TODO: This method is reserved for internal DB use.

Specified by:

dataTypeReplaced in interface DataType

Overrides:

dataTypeReplaced in class AbstractDataType

Parameters:

oldDt - old datatype

newDt - new datatype

dataTypeNameChanged

public void dataTypeNameChanged(DataType dt,
                                java.lang.String oldName)

Description copied from interface: DataType

Informs this datatype that its name has changed from the indicated old name.

TODO: This method is reserved for internal DB use.

Specified by:

dataTypeNameChanged in interface DataType

Overrides:

dataTypeNameChanged in class AbstractDataType

Parameters:

dt - the datatype whose name changed

oldName - the datatype's old name

dependsOn

public boolean dependsOn(DataType dt)

Description copied from interface: DataType

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.

Specified by:

dependsOn in interface DataType

Overrides:

dependsOn in class AbstractDataType

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.

toString

public java.lang.String toString()

Overrides:

toString in class AbstractDataType