Package daikon.derive.unary

Class SequenceInitial

Object

Derivation

UnaryDerivation

SequenceInitial

All Implemented Interfaces:

Serializable, Cloneable

public final class SequenceInitial
extends UnaryDerivation

This represents a sequence element at a particular offset (such as first, second, penultimate, last).

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static boolean	dkconfig_enabled	Boolean.
int	index	Typically 0, 1, -1, or -2.

Fields inherited from class UnaryDerivation

base

Fields inherited from class Derivation

debug, dkconfig_disable_derived_variables, missing_array_bounds

Method Summary

Modifier and Type	Method	Description
static boolean	applicable(VarInfo vi)
ValueAndModified	computeValueAndModifiedImpl(ValueTuple vt)	Actual implementation once mods are handled.
String	esc_name(String index)	Returns the ESC name.
boolean	isSameFormula(Derivation other)	Returns true iff other and this represent the same derivation (modulo the variable they are applied to).
protected VarInfo	makeVarInfo()	Used by all child classes to actually create the VarInfo this represents, after which it is interned for getVarInfo().
VarInfo	seqvar()

Methods inherited from class UnaryDerivation

base, canBeMissing, clone, computeValueAndModified, derivedDepth, getBase, getBases, isDerivedFromNonCanonical, isParam, switchVars

Methods inherited from class Derivation

complexity, csharp_name, get_array_var, get_lower_bound, get_upper_bound, getVarInfo, inside_csharp_name, inside_esc_name, inside_jml_name, is_prestate_version, jml_name, makeVarInfo_common_setup, missingOutOfBounds, shift_str, simplify_name

Methods inherited from class Object

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

Field Detail

dkconfig_enabled

public static boolean dkconfig_enabled

Boolean. True iff SequenceInitial derived variables should be generated.

index

public final int index

Typically 0, 1, -1, or -2. A negative number means counting from end.

Method Detail

seqvar

public VarInfo seqvar()

applicable

public static boolean applicable(VarInfo vi)

computeValueAndModifiedImpl

public ValueAndModified computeValueAndModifiedImpl(ValueTuple vt)

Description copied from class: UnaryDerivation

Actual implementation once mods are handled.

Specified by:

computeValueAndModifiedImpl in class UnaryDerivation

makeVarInfo

protected VarInfo makeVarInfo()

Description copied from class: Derivation

Used by all child classes to actually create the VarInfo this represents, after which it is interned for getVarInfo().

Specified by:

makeVarInfo in class Derivation

isSameFormula

@Pure
public boolean isSameFormula(Derivation other)

Description copied from class: Derivation

Returns true iff other and this represent the same derivation (modulo the variable they are applied to). Default implentation will just checks run-time type, but subclasses with state (e.g. SequenceInitial index) should match that, too.

Specified by:

isSameFormula in class Derivation

Parameters:

other - the Derivation to compare to

Returns:

true iff other and this represent the same derivation

esc_name

@SideEffectFree
public String esc_name(String index)

Returns the ESC name.

Overrides:

esc_name in class Derivation