de.rwth.i2.attestor.stateSpaceGeneration

Interface SemanticsCommand

All Known Implementing Classes:

AggressiveTerminalStatement, AssignInvoke, AssignStmt, BranchingSkip, GotoStmt, IdentityStmt, IfStmt, InvokeStmt, NeighbourhoodMarkingCommand, ReturnValueStmt, ReturnVoidStmt, Skip, Statement, TerminalStatement, VisitedMarkingCommand

public interface SemanticsCommand

An abstraction of abstract program semantics that is executed on objects of type ProgramState.

Author:

Christoph

Method Summary

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

Method Detail

computeSuccessors

Collection<ProgramState> computeSuccessors(ProgramState programState)

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.

Parameters:

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

Returns:

All states resulting from executing the program semantics on programState.

getPotentialViolationPoints

ViolationPoints getPotentialViolationPoints()

Returns:

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

getSuccessorPCs

Set<Integer> getSuccessorPCs()

Returns:

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

needsCanonicalization

boolean needsCanonicalization()

Returns:

true, if the statement always requires canonicalization