Package it.unive.lisa.program.cfg.statement.numeric

Class Negation

java.lang.Object

it.unive.lisa.program.cfg.statement.Statement

it.unive.lisa.program.cfg.statement.Expression

it.unive.lisa.program.cfg.statement.call.Call

it.unive.lisa.program.cfg.statement.call.NativeCall

it.unive.lisa.program.cfg.statement.call.UnaryNativeCall

it.unive.lisa.program.cfg.statement.numeric.Negation

All Implemented Interfaces:

ProgramPoint, CodeElement, Node<Statement,Edge,CFG>, java.lang.Comparable<Statement>

public class Negation
extends UnaryNativeCall

An expression modeling the numerical negation operation (-). The operand's type must be instance of NumericType. The type of this expression is the same as the one of its operand.

Field Summary

Fields inherited from class it.unive.lisa.program.cfg.statement.Statement

offset

Constructor Summary

Constructors

Constructor	Description
Negation(CFG cfg, CodeLocation location, Expression expression)	Builds the numerical negation.

Method Summary

Modifier and Type	Method	Description
protected <A extends AbstractState<A,H,V>,H extends HeapDomain<H>,V extends ValueDomain<V>> AnalysisState<A,H,V>	unarySemantics(AnalysisState<A,H,V> entryState, InterproceduralAnalysis<A,H,V> interprocedural, AnalysisState<A,H,V> exprState, SymbolicExpression expr)	Computes the semantics of the call, after the semantics of the parameter has been computed.

Methods inherited from class it.unive.lisa.program.cfg.statement.call.UnaryNativeCall

callSemantics

Methods inherited from class it.unive.lisa.program.cfg.statement.call.NativeCall

equals, getConstructName, hashCode, toString

Methods inherited from class it.unive.lisa.program.cfg.statement.call.Call

accept, getParameters, semantics, setOffset

Methods inherited from class it.unive.lisa.program.cfg.statement.Expression

getDynamicType, getMetaVariables, getParentStatement, getRootStatement, getRuntimeTypes, getStaticType, setParentStatement, setRuntimeTypes

Methods inherited from class it.unive.lisa.program.cfg.statement.Statement

compareTo, getCFG, getLocation, getOffset, stopsExecution, throwsError

Methods inherited from class java.lang.Object

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

Constructor Detail

Negation

public Negation(CFG cfg,
                CodeLocation location,
                Expression expression)

Builds the numerical negation.

Parameters:

cfg - the CFG where this operation lies

location - the location where this literal is defined

expression - the operand of this operation

Method Detail

unarySemantics

protected <A extends AbstractState<A,H,V>,H extends HeapDomain<H>,V extends ValueDomain<V>> AnalysisState<A,H,V> unarySemantics(AnalysisState<A,H,V> entryState,
                                                                                                                                                                    InterproceduralAnalysis<A,H,V> interprocedural,
                                                                                                                                                                    AnalysisState<A,H,V> exprState,
                                                                                                                                                                    SymbolicExpression expr)
                                                                                                                                                             throws SemanticException

Description copied from class: UnaryNativeCall

Computes the semantics of the call, after the semantics of the parameter has been computed. Meta variables from the parameter will be forgotten after this call returns.

Specified by:

unarySemantics in class UnaryNativeCall

Type Parameters:

A - the type of AbstractState

H - the type of the HeapDomain

V - the type of the ValueDomain

Parameters:

entryState - the entry state of this unary call

interprocedural - the interprocedural analysis of the program to analyze

exprState - the state obtained by evaluating expr in entryState

expr - the symbolic expressions representing the computed value of the parameter of this call

Returns:

the AnalysisState representing the abstract result of the execution of this call

Throws:

SemanticException - if something goes wrong during the computation