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

Class Subtraction

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.BinaryNativeCall

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

All Implemented Interfaces:

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

public class Subtraction
extends BinaryNativeCall

An expression modeling the subtraction operation (-). Both operands' types must be instances of NumericType. The type of this expression is the common numerical type of its operands, according to the type inference.

Field Summary

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

offset

Constructor Summary

Constructors

Constructor	Description
Subtraction(CFG cfg, CodeLocation location, Expression left, Expression right)	Builds the subtraction.

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>	binarySemantics(AnalysisState<A,H,V> entryState, InterproceduralAnalysis<A,H,V> interprocedural, AnalysisState<A,H,V> leftState, SymbolicExpression left, AnalysisState<A,H,V> rightState, SymbolicExpression right)	Computes the semantics of the call, after the semantics of the parameters have been computed.

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

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

Subtraction

public Subtraction(CFG cfg,
                   CodeLocation location,
                   Expression left,
                   Expression right)

Builds the subtraction.

Parameters:

cfg - the CFG where this operation lies

location - the location where this literal is defined

left - the left-hand side of this operation

right - the right-hand side of this operation

Method Detail

binarySemantics

protected <A extends AbstractState<A,H,V>,H extends HeapDomain<H>,V extends ValueDomain<V>> AnalysisState<A,H,V> binarySemantics(AnalysisState<A,H,V> entryState,
                                                                                                                                                                     InterproceduralAnalysis<A,H,V> interprocedural,
                                                                                                                                                                     AnalysisState<A,H,V> leftState,
                                                                                                                                                                     SymbolicExpression left,
                                                                                                                                                                     AnalysisState<A,H,V> rightState,
                                                                                                                                                                     SymbolicExpression right)
                                                                                                                                                              throws SemanticException

Description copied from class: BinaryNativeCall

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

Specified by:

binarySemantics in class BinaryNativeCall

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 binary call

interprocedural - the interprocedural analysis of the program to analyze

leftState - the state obtained by evaluating left in entryState

left - the symbolic expression representing the computed value of the first parameter of this call

rightState - the state obtained by evaluating right in leftState

right - the symbolic expression representing the computed value of the second 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