de.rwth.i2.attestor.semantics

Class TerminalStatement

java.lang.Object

de.rwth.i2.attestor.semantics.TerminalStatement

All Implemented Interfaces:

SemanticsCommand

public class TerminalStatement
extends Object
implements SemanticsCommand

Terminal Statements are used to model the exit point of a method. They return an empty result set.

Author:

Hannah Arndt, Christoph

Constructor Summary

Constructors

Constructor and Description
TerminalStatement()

Method Summary

Modifier and Type	Method and Description
Collection<ProgramState>	computeSuccessors(ProgramState executable) Executes a single step of the abstract program semantics on the given program state.
ViolationPoints	getPotentialViolationPoints()
Set<Integer>	getSuccessorPCs()
boolean	needsCanonicalization()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

TerminalStatement

public TerminalStatement()

Method Detail

computeSuccessors

public Collection<ProgramState> computeSuccessors(ProgramState executable)

Description copied from interface: SemanticsCommand

Executes a single step of the abstract program semantics on the given program state. Since the abstract program semantics may be non-deterministic (for example if a conditional statement cannot be evaluated), this results in a set of successor program states in general.

Specified by:

computeSuccessors in interface SemanticsCommand

Parameters:

executable - The state on which the abstract program semantics shall be executed.

Returns:

All states resulting from executing the program semantics on programState.

getPotentialViolationPoints

public ViolationPoints getPotentialViolationPoints()

Specified by:

getPotentialViolationPoints in interface SemanticsCommand

Returns:

All potential violation points that may prevent execution of this statement.

getSuccessorPCs

public Set<Integer> getSuccessorPCs()

Specified by:

getSuccessorPCs in interface SemanticsCommand

Returns:

The set of all program locations that are direct successors of this program statement in the underlying control flow graph.

needsCanonicalization

public boolean needsCanonicalization()

Specified by:

needsCanonicalization in interface SemanticsCommand

Returns:

true, if the statement always requires canonicalization

toString

public String toString()

Overrides:

toString in class Object