Package daikon.inv.unary.scalar

Class SingleScalar

Object

Invariant

UnaryInvariant

SingleScalar

All Implemented Interfaces:

Serializable, Cloneable

Direct Known Subclasses:

CompleteOneOfScalar, IsPointer, LowerBound, Modulus, NonModulus, NonZero, OneOfScalar, Positive, RangeInt, UpperBound

public abstract class SingleScalar
extends UnaryInvariant

Abstract base class for invariants over one numeric (scalar) variable, such as x != 0.

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 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	SingleScalar()
protected	SingleScalar(PptSlice ppt)

Method Summary

Modifier and Type	Method	Description
InvariantStatus	add(@Interned Object val, int mod_index, int count)
abstract InvariantStatus	add_modified(long value, int count)	Similar to check_modified(long, int) except that it can change the state of the invariant if necessary.
InvariantStatus	add_unmodified(long value, int count)	By default, do nothing if the value hasn't been seen yet.
InvariantStatus	check(@Interned Object val, int mod_index, int count)
abstract InvariantStatus	check_modified(long value, int count)	Presents a sample to the invariant.
InvariantStatus	check_unmodified(long value, int count)
boolean	valid_types(VarInfo[] vis)	Returns whether or not the specified types are valid for unary scalar.
static boolean	valid_types_static(VarInfo[] vis)	Returns whether or not the specified types are valid for unary scalar.
VarInfo	var()

Methods inherited from class UnaryInvariant

resurrect_done

Methods inherited from class Invariant

add_sample, asInvClass, checkRep, clear_falsified, clone, clone_and_permute, computeConfidence, conf_is_ge, confidence_and, confidence_and, confidence_or, createGuardedInvariant, createGuardingPredicate, enabled, enoughSamples, falsify, find, format, format_classname, format_too_few_samples, format_unimplemented, format_using, formatFuzzy, get_comparability, get_ni_suppressions, getConfidence, getGuardingList, getGuardingList, hasUninterestingConstant, instantiate, instantiate_dyn, instantiate_ok, 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, isSameFormula, isSameInvariant, isValidEscExpression, isValidExpression, isWorthPrinting, justified, log, log, logDetail, logOn, match, merge, mergeFormulasOk, permute, prob_and, prob_and, prob_is_ge, prob_or, repCheck, repr, 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

Constructor Detail

SingleScalar

protected SingleScalar(PptSlice ppt)

SingleScalar

protected SingleScalar()

Method Detail

var

public VarInfo var(@GuardSatisfied @UnknownInitialization(SingleScalar.class) SingleScalar this)

valid_types_static

public static final boolean valid_types_static(VarInfo[] vis)

Returns whether or not the specified types are valid for unary scalar. (Static version of method.)

valid_types

public final boolean valid_types(VarInfo[] vis)

Returns whether or not the specified types are valid for unary scalar.

Specified by:

valid_types in class Invariant

See Also:

Invariant.instantiate_ok(VarInfo[])

add

public InvariantStatus add(@Interned Object val,
                           int mod_index,
                           int count)

Specified by:

add in class UnaryInvariant

check

public InvariantStatus check(@Interned Object val,
                             int mod_index,
                             int count)

Specified by:

check in class UnaryInvariant

add_modified

public abstract InvariantStatus add_modified(long value,
                                             int count)

Similar to check_modified(long, 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 check_modified(long, int). This method need not check for falsification; that is done by the caller.

add_unmodified

public InvariantStatus add_unmodified(long value,
                                      int count)

By default, do nothing if the value hasn't been seen yet. Subclasses can override this.

check_modified

public abstract InvariantStatus check_modified(long value,
                                               int count)

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

Parameters:

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

check_unmodified

public InvariantStatus check_unmodified(long value,
                                        int count)