Package it.unive.lisa.analysis.numeric

Class IntegerConstantPropagation

java.lang.Object

it.unive.lisa.analysis.numeric.IntegerConstantPropagation

All Implemented Interfaces:

it.unive.lisa.analysis.BaseLattice<IntegerConstantPropagation>, it.unive.lisa.analysis.Lattice<IntegerConstantPropagation>, it.unive.lisa.analysis.nonrelational.NonRelationalDomain<IntegerConstantPropagation,it.unive.lisa.symbolic.value.ValueExpression,it.unive.lisa.analysis.nonrelational.value.ValueEnvironment<IntegerConstantPropagation>>, it.unive.lisa.analysis.nonrelational.NonRelationalElement<IntegerConstantPropagation,it.unive.lisa.symbolic.value.ValueExpression,it.unive.lisa.analysis.nonrelational.value.ValueEnvironment<IntegerConstantPropagation>>, it.unive.lisa.analysis.nonrelational.value.BaseNonRelationalValueDomain<IntegerConstantPropagation>, it.unive.lisa.analysis.nonrelational.value.NonRelationalValueDomain<IntegerConstantPropagation>, it.unive.lisa.analysis.SemanticEvaluator

public class IntegerConstantPropagation
extends java.lang.Object
implements it.unive.lisa.analysis.nonrelational.value.BaseNonRelationalValueDomain<IntegerConstantPropagation>

The overflow-insensitive basic integer constant propagation abstract domain, tracking if a certain integer value has constant value or not, implemented as a BaseNonRelationalValueDomain, handling top and bottom values for the expression evaluation and bottom values for the expression satisfiability. Top and bottom cases for least upper bounds, widening and less or equals operations are handled by BaseLattice in BaseLattice.lub(L), BaseLattice.widening(L) and BaseLattice.lessOrEqual(L), respectively.

Nested Class Summary

Nested classes/interfaces inherited from interface it.unive.lisa.analysis.nonrelational.value.BaseNonRelationalValueDomain

it.unive.lisa.analysis.nonrelational.value.BaseNonRelationalValueDomain.EvaluationVisitor<T extends it.unive.lisa.analysis.nonrelational.value.BaseNonRelationalValueDomain<T>>

Field Summary

Fields inherited from interface it.unive.lisa.analysis.Lattice

BOTTOM_STRING, TOP_STRING

Constructor Summary

Constructors

Constructor	Description
IntegerConstantPropagation()	Builds the top abstract value.
IntegerConstantPropagation(java.lang.Integer value)	Builds the abstract value for the given constant.

Method Summary

Modifier and Type	Method	Description
it.unive.lisa.analysis.nonrelational.value.ValueEnvironment<IntegerConstantPropagation>	assumeBinaryExpression(it.unive.lisa.analysis.nonrelational.value.ValueEnvironment<IntegerConstantPropagation> environment, it.unive.lisa.symbolic.value.operator.binary.BinaryOperator operator, it.unive.lisa.symbolic.value.ValueExpression left, it.unive.lisa.symbolic.value.ValueExpression right, it.unive.lisa.program.cfg.ProgramPoint src, it.unive.lisa.program.cfg.ProgramPoint dest)
IntegerConstantPropagation	bottom()
boolean	equals(java.lang.Object obj)
IntegerConstantPropagation	evalBinaryExpression(it.unive.lisa.symbolic.value.operator.binary.BinaryOperator operator, IntegerConstantPropagation left, IntegerConstantPropagation right, it.unive.lisa.program.cfg.ProgramPoint pp)
IntegerConstantPropagation	evalNonNullConstant(it.unive.lisa.symbolic.value.Constant constant, it.unive.lisa.program.cfg.ProgramPoint pp)
IntegerConstantPropagation	evalNullConstant(it.unive.lisa.program.cfg.ProgramPoint pp)
IntegerConstantPropagation	evalTernaryExpression(it.unive.lisa.symbolic.value.operator.ternary.TernaryOperator operator, IntegerConstantPropagation left, IntegerConstantPropagation middle, IntegerConstantPropagation right, it.unive.lisa.program.cfg.ProgramPoint pp)
IntegerConstantPropagation	evalUnaryExpression(it.unive.lisa.symbolic.value.operator.unary.UnaryOperator operator, IntegerConstantPropagation arg, it.unive.lisa.program.cfg.ProgramPoint pp)
int	hashCode()
boolean	isTop()
boolean	lessOrEqualAux(IntegerConstantPropagation other)
IntegerConstantPropagation	lubAux(IntegerConstantPropagation other)
it.unive.lisa.analysis.representation.DomainRepresentation	representation()
it.unive.lisa.analysis.SemanticDomain.Satisfiability	satisfiesBinaryExpression(it.unive.lisa.symbolic.value.operator.binary.BinaryOperator operator, IntegerConstantPropagation left, IntegerConstantPropagation right, it.unive.lisa.program.cfg.ProgramPoint pp)
IntegerConstantPropagation	top()

Methods inherited from class java.lang.Object

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

Methods inherited from interface it.unive.lisa.analysis.BaseLattice

glb, glbAux, lessOrEqual, lub, narrowing, narrowingAux, toString, widening, wideningAux

Methods inherited from interface it.unive.lisa.analysis.nonrelational.value.BaseNonRelationalValueDomain

assume, assumeTernaryExpression, assumeUnaryExpression, canProcess, eval, evalIdentifier, evalPushAny, evalSkip, evalTypeCast, evalTypeConv, satisfies, satisfiesAbstractValue, satisfiesNonNullConstant, satisfiesNullConstant, satisfiesTernaryExpression, satisfiesUnaryExpression, tracksIdentifiers

Methods inherited from interface it.unive.lisa.analysis.Lattice

isBottom

Methods inherited from interface it.unive.lisa.analysis.nonrelational.NonRelationalElement

variable

Constructor Detail

IntegerConstantPropagation

public IntegerConstantPropagation()

Builds the top abstract value.

IntegerConstantPropagation

public IntegerConstantPropagation(java.lang.Integer value)

Builds the abstract value for the given constant.

Parameters:

value - the constant

Method Detail

top

public IntegerConstantPropagation top()

Specified by:

top in interface it.unive.lisa.analysis.Lattice<IntegerConstantPropagation>

isTop

public boolean isTop()

Specified by:

isTop in interface it.unive.lisa.analysis.Lattice<IntegerConstantPropagation>

bottom

public IntegerConstantPropagation bottom()

Specified by:

bottom in interface it.unive.lisa.analysis.Lattice<IntegerConstantPropagation>

representation

public it.unive.lisa.analysis.representation.DomainRepresentation representation()

Specified by:

representation in interface it.unive.lisa.analysis.nonrelational.NonRelationalElement<IntegerConstantPropagation,it.unive.lisa.symbolic.value.ValueExpression,it.unive.lisa.analysis.nonrelational.value.ValueEnvironment<IntegerConstantPropagation>>

evalNullConstant

public IntegerConstantPropagation evalNullConstant(it.unive.lisa.program.cfg.ProgramPoint pp)

Specified by:

evalNullConstant in interface it.unive.lisa.analysis.nonrelational.value.BaseNonRelationalValueDomain<IntegerConstantPropagation>

evalNonNullConstant

public IntegerConstantPropagation evalNonNullConstant(it.unive.lisa.symbolic.value.Constant constant,
                                                      it.unive.lisa.program.cfg.ProgramPoint pp)

Specified by:

evalNonNullConstant in interface it.unive.lisa.analysis.nonrelational.value.BaseNonRelationalValueDomain<IntegerConstantPropagation>

evalUnaryExpression

public IntegerConstantPropagation evalUnaryExpression(it.unive.lisa.symbolic.value.operator.unary.UnaryOperator operator,
                                                      IntegerConstantPropagation arg,
                                                      it.unive.lisa.program.cfg.ProgramPoint pp)

Specified by:

evalUnaryExpression in interface it.unive.lisa.analysis.nonrelational.value.BaseNonRelationalValueDomain<IntegerConstantPropagation>

evalBinaryExpression

public IntegerConstantPropagation evalBinaryExpression(it.unive.lisa.symbolic.value.operator.binary.BinaryOperator operator,
                                                       IntegerConstantPropagation left,
                                                       IntegerConstantPropagation right,
                                                       it.unive.lisa.program.cfg.ProgramPoint pp)

Specified by:

evalBinaryExpression in interface it.unive.lisa.analysis.nonrelational.value.BaseNonRelationalValueDomain<IntegerConstantPropagation>

evalTernaryExpression

public IntegerConstantPropagation evalTernaryExpression(it.unive.lisa.symbolic.value.operator.ternary.TernaryOperator operator,
                                                        IntegerConstantPropagation left,
                                                        IntegerConstantPropagation middle,
                                                        IntegerConstantPropagation right,
                                                        it.unive.lisa.program.cfg.ProgramPoint pp)

Specified by:

evalTernaryExpression in interface it.unive.lisa.analysis.nonrelational.value.BaseNonRelationalValueDomain<IntegerConstantPropagation>

lubAux

public IntegerConstantPropagation lubAux(IntegerConstantPropagation other)
                                  throws it.unive.lisa.analysis.SemanticException

Specified by:

lubAux in interface it.unive.lisa.analysis.BaseLattice<IntegerConstantPropagation>

Throws:

it.unive.lisa.analysis.SemanticException

lessOrEqualAux

public boolean lessOrEqualAux(IntegerConstantPropagation other)
                       throws it.unive.lisa.analysis.SemanticException

Specified by:

lessOrEqualAux in interface it.unive.lisa.analysis.BaseLattice<IntegerConstantPropagation>

Throws:

it.unive.lisa.analysis.SemanticException

hashCode

public int hashCode()

Specified by:

hashCode in interface it.unive.lisa.analysis.BaseLattice<IntegerConstantPropagation>

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Specified by:

equals in interface it.unive.lisa.analysis.BaseLattice<IntegerConstantPropagation>

Overrides:

equals in class java.lang.Object

satisfiesBinaryExpression

public it.unive.lisa.analysis.SemanticDomain.Satisfiability satisfiesBinaryExpression(it.unive.lisa.symbolic.value.operator.binary.BinaryOperator operator,
                                                                                      IntegerConstantPropagation left,
                                                                                      IntegerConstantPropagation right,
                                                                                      it.unive.lisa.program.cfg.ProgramPoint pp)

Specified by:

satisfiesBinaryExpression in interface it.unive.lisa.analysis.nonrelational.value.BaseNonRelationalValueDomain<IntegerConstantPropagation>

assumeBinaryExpression

public it.unive.lisa.analysis.nonrelational.value.ValueEnvironment<IntegerConstantPropagation> assumeBinaryExpression(it.unive.lisa.analysis.nonrelational.value.ValueEnvironment<IntegerConstantPropagation> environment,
                                                                                                                      it.unive.lisa.symbolic.value.operator.binary.BinaryOperator operator,
                                                                                                                      it.unive.lisa.symbolic.value.ValueExpression left,
                                                                                                                      it.unive.lisa.symbolic.value.ValueExpression right,
                                                                                                                      it.unive.lisa.program.cfg.ProgramPoint src,
                                                                                                                      it.unive.lisa.program.cfg.ProgramPoint dest)
                                                                                                               throws it.unive.lisa.analysis.SemanticException

Specified by:

assumeBinaryExpression in interface it.unive.lisa.analysis.nonrelational.value.BaseNonRelationalValueDomain<IntegerConstantPropagation>

Throws:

it.unive.lisa.analysis.SemanticException