Package daikon.inv.unary.sequence

Class CommonFloatSequence

Object

Invariant

UnaryInvariant

SingleSequence

SingleFloatSequence

CommonFloatSequence

All Implemented Interfaces:

Serializable, Cloneable

public class CommonFloatSequence
extends SingleFloatSequence

Represents sequences of double values that contain a common subset. Prints as {e1, e2, e3, ...} subset of x[].

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class Invariant

Invariant.ClassVarnameComparator, Invariant.ClassVarnameFormulaComparator, Invariant.InvariantComparatorForPrinting, Invariant.Match

Field Summary

Fields

Modifier and Type	Field	Description
static boolean	dkconfig_enabled	Boolean.
static boolean	dkconfig_hashcode_seqs	Boolean.

Fields inherited from class SingleSequence

dkconfig_SeqIndexDisableAll

Fields inherited from class Invariant

CONFIDENCE_JUSTIFIED, CONFIDENCE_NEVER, CONFIDENCE_UNJUSTIFIED, debug, debugFlow, debugGuarding, debugIsObvious, debugIsWorthPrinting, debugPrint, debugPrintEquality, dkconfig_confidence_limit, dkconfig_fuzzy_ratio, dkconfig_simplify_define_predicates, falsified, invariantEnabledDefault, isGuardingPredicate, min_mod_non_missing_samples, ppt, PROBABILITY_JUSTIFIED, PROBABILITY_NEVER, PROBABILITY_UNJUSTIFIED

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	CommonFloatSequence()
protected	CommonFloatSequence(PptSlice ppt)

Method Summary

Modifier and Type	Method	Description
InvariantStatus	add_modified(double @Interned [] a, int count)	Similar to SingleFloatSequence.check_modified(double[], int) except that it can change the state of the invariant if necessary.
InvariantStatus	check_modified(double @Interned [] a, int count)	Presents a sample to the invariant.
protected double	computeConfidence()	This method computes the confidence that this invariant occurred by chance.
boolean	enabled()	returns whether or not this invariant is enabled
String	format_csharp_contract()
String	format_daikon()
String	format_using(OutputFormat format)	Return a printed representation of this invariant, in the given format.
static CommonFloatSequence	get_proto()	Returns the prototype invariant for CommonFloatSequence
protected CommonFloatSequence	instantiate_dyn(PptSlice slice)	instantiate an invariant on the specified slice
boolean	instantiate_ok(VarInfo[] vis)	Sequences of hashcode values won't be consistent and are thus not printed by default.
boolean	isSameFormula(Invariant other)	Returns true iff the two invariants represent the same mathematical formula.
String	repr()	For printing invariants, there are two interfaces: repr gives a low-level representation (Invariant.repr_prob() also prints the confidence), and Invariant.format() gives a high-level representation for user output.

Methods inherited from class SingleFloatSequence

add, add_unmodified, check, check_unmodified, valid_types

Methods inherited from class SingleSequence

var

Methods inherited from class UnaryInvariant

resurrect_done

Methods inherited from class Invariant

add_sample, asInvClass, checkRep, clear_falsified, clone, clone_and_permute, conf_is_ge, confidence_and, confidence_and, confidence_or, createGuardedInvariant, createGuardingPredicate, enoughSamples, falsify, find, format, format_classname, format_too_few_samples, format_unimplemented, formatFuzzy, get_comparability, get_ni_suppressions, getConfidence, getGuardingList, getGuardingList, hasUninterestingConstant, instantiate, is_false, is_ni_suppressed, isActive, isAllPrestate, isEqualityComparison, isExact, isExclusiveFormula, isObvious, isObviousDynamically, isObviousDynamically, isObviousDynamically_SomeInEquality, isObviousDynamically_SomeInEqualityHelper, isObviousStatically, isObviousStatically, isObviousStatically_AllInEquality, isObviousStatically_SomeInEquality, isObviousStatically_SomeInEqualityHelper, isReflexive, isSameInvariant, isValidEscExpression, isValidExpression, isWorthPrinting, justified, log, log, logDetail, logOn, match, merge, mergeFormulasOk, permute, prob_and, prob_and, prob_is_ge, prob_or, repCheck, repr_prob, resurrect, simplify_format_double, simplify_format_long, simplify_format_string, state_match, toString, toString, transfer, usesVar, usesVar, usesVarDerived, varNames

Methods inherited from class Object

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

Field Detail

dkconfig_enabled

public static boolean dkconfig_enabled

Boolean. True iff CommonSequence invariants should be considered.

dkconfig_hashcode_seqs

public static boolean dkconfig_hashcode_seqs

Boolean. Set to true to consider common sequences over hashcodes (pointers).

Constructor Detail

CommonFloatSequence

protected CommonFloatSequence(PptSlice ppt)

CommonFloatSequence

protected CommonFloatSequence()

Method Detail

get_proto

public static CommonFloatSequence get_proto()

Returns the prototype invariant for CommonFloatSequence

enabled

public boolean enabled()

returns whether or not this invariant is enabled

Specified by:

enabled in class Invariant

instantiate_ok

public boolean instantiate_ok(VarInfo[] vis)

Sequences of hashcode values won't be consistent and are thus not printed by default.

Overrides:

instantiate_ok in class Invariant

See Also:

Invariant.valid_types(VarInfo[])

instantiate_dyn

protected CommonFloatSequence instantiate_dyn( CommonFloatSequence this,
                                              PptSlice slice)

instantiate an invariant on the specified slice

Specified by:

instantiate_dyn in class Invariant

Returns:

the new invariant

repr

public String repr(@GuardSatisfied CommonFloatSequence this)

Description copied from class: Invariant

For printing invariants, there are two interfaces: repr gives a low-level representation (Invariant.repr_prob() also prints the confidence), and Invariant.format() gives a high-level representation for user output.

Overrides:

repr in class Invariant

Returns:

a string representation of this

format_using

@SideEffectFree
public String format_using(@GuardSatisfied CommonFloatSequence this,
                           OutputFormat format)

Description copied from class: Invariant

Return a printed representation of this invariant, in the given format.

Specified by:

format_using in class Invariant

format_daikon

public String format_daikon(@GuardSatisfied CommonFloatSequence this)

format_csharp_contract

public String format_csharp_contract(@GuardSatisfied CommonFloatSequence this)

check_modified

public InvariantStatus check_modified(double @Interned [] a,
                                      int count)

Description copied from class: SingleFloatSequence

Presents a sample to the invariant. Returns whether the sample is consistent with the invariant. Does not change the state of the invariant.

Specified by:

check_modified in class SingleFloatSequence

count - how many identical samples were observed in a row. For example, three calls to check_modified with a count parameter of 1 is equivalent to one call to check_modified with a count parameter of 3.

Returns:

whether or not the sample is consistent with the invariant

add_modified

public InvariantStatus add_modified(double @Interned [] a,
                                    int count)

Description copied from class: SingleFloatSequence

Similar to SingleFloatSequence.check_modified(double[], int) except that it can change the state of the invariant if necessary. If the invariant doesn't have any state, then the implementation should simply call SingleFloatSequence.check_modified(double[], int). This method need not check for falsification; that is done by the caller.

Specified by:

add_modified in class SingleFloatSequence

computeConfidence

protected double computeConfidence()

Description copied from class: Invariant

This method computes the confidence that this invariant occurred by chance. Clients should call Invariant.getConfidence() instead.

This method need not check the value of field "falsified", as the caller does that.

Specified by:

computeConfidence in class Invariant

Returns:

confidence of this invariant

See Also:

Invariant.getConfidence()

isSameFormula

@Pure
public boolean isSameFormula(Invariant other)

Description copied from class: Invariant

Returns true iff the two invariants represent the same mathematical formula. Does not consider the context such as variable names, confidences, sample counts, value counts, or related quantities. As a rule of thumb, if two invariants format the same, this method returns true. Furthermore, in many cases, if an invariant does not involve computed constants (as "x>c" and "y=ax+b" do for constants a, b, and c), then this method vacuously returns true.

Specified by:

isSameFormula in class Invariant

Parameters:

other - the invariant to compare to this one

Returns:

true iff the two invariants represent the same mathematical formula. Does not consider