/// <summary>
/// Checks the methods of each machine and report warnings if
/// any method is directly accessed by anything else than the
/// P# runtime.
/// </summary>
private static void CheckMethods()
{
foreach (var classDecl in AnalysisContext.Machines)
{
SanityCheckingAnalysis.CheckForExternalAsynchronyUseInMachine(classDecl);
foreach (var nestedClass in classDecl.ChildNodes().OfType <ClassDeclarationSyntax>())
{
if (nestedClass.BaseList == null ||
!nestedClass.BaseList.Types.Any(t => t.ToString().Equals("MachineState")))
{
ErrorReporter.ReportAndExit("Class '{0}' is not a state of the machine '{1}' " +
"and, thus, is not allowed to be declared inside the machine body.",
nestedClass.Identifier.ValueText, classDecl.Identifier.ValueText);
}
foreach (var method in nestedClass.ChildNodes().OfType <MethodDeclarationSyntax>())
{
if (method.Modifiers.Any(SyntaxKind.AbstractKeyword))
{
continue;
}
foreach (var stmt in method.Body.Statements)
{
SanityCheckingAnalysis.CheckStatement(stmt, method, classDecl, nestedClass);
}
}
}
foreach (var method in classDecl.ChildNodes().OfType <MethodDeclarationSyntax>())
{
if (method.Modifiers.Any(SyntaxKind.AbstractKeyword))
{
continue;
}
foreach (var stmt in method.Body.Statements)
{
SanityCheckingAnalysis.CheckStatement(stmt, method, classDecl);
}
}
}
}
/// <summary>
/// Check the given statement for any missbehaviour.
/// </summary>
/// <param name="stmt">Statement</param>
/// <param name="method">Method</param>
/// <param name="machine">machine</param>
/// <param name="state">state</param>
private static void CheckStatement(StatementSyntax stmt, MethodDeclarationSyntax method,
ClassDeclarationSyntax machine, ClassDeclarationSyntax state = null)
{
if (stmt is ExpressionStatementSyntax)
{
var exprStmt = stmt as ExpressionStatementSyntax;
if (exprStmt.Expression is InvocationExpressionSyntax)
{
var invExprStmt = exprStmt.Expression as InvocationExpressionSyntax;
if (invExprStmt.Expression is MemberAccessExpressionSyntax)
{
var callStmt = invExprStmt.Expression as MemberAccessExpressionSyntax;
if (callStmt.Name.Identifier.ValueText.Equals("OnEntry") ||
callStmt.Name.Identifier.ValueText.Equals("OnExit") ||
callStmt.Name.Identifier.ValueText.Equals("DefineIgnoredEvents") ||
callStmt.Name.Identifier.ValueText.Equals("DefineDeferredEvents") ||
callStmt.Name.Identifier.ValueText.Equals("DefineGotoStateTransitions") ||
callStmt.Name.Identifier.ValueText.Equals("DefinePushStateTransitions") ||
callStmt.Name.Identifier.ValueText.Equals("DefineActionBindings"))
{
Log log = new Log(method, machine, state, null);
log.AddTrace(callStmt.ToString(), callStmt.SyntaxTree.FilePath, callStmt.SyntaxTree.
GetLineSpan(callStmt.Span).StartLinePosition.Line + 1);
AnalysisErrorReporter.ReportRuntimeOnlyMethodAccess(log);
}
}
}
else if (exprStmt.Expression is BinaryExpressionSyntax)
{
var binExprStmt = exprStmt.Expression as BinaryExpressionSyntax;
if (binExprStmt.Right is ObjectCreationExpressionSyntax)
{
var newObjStmt = binExprStmt.Right as ObjectCreationExpressionSyntax;
if (SanityCheckingAnalysis.IsStateOfTheMachine(newObjStmt.Type.ToString(), machine))
{
Log log = new Log(method, machine, state, null);
log.AddTrace(newObjStmt.ToString(), newObjStmt.SyntaxTree.FilePath, newObjStmt.SyntaxTree.
GetLineSpan(newObjStmt.Span).StartLinePosition.Line + 1);
AnalysisErrorReporter.ReportExplicitStateInitialisation(log);
}
}
}
}
else if (stmt is LocalDeclarationStatementSyntax)
{
var localDeclStmt = stmt as LocalDeclarationStatementSyntax;
foreach (var variable in localDeclStmt.Declaration.Variables)
{
if (variable.Initializer != null &&
variable.Initializer.Value is ObjectCreationExpressionSyntax)
{
var newObjStmt = variable.Initializer.Value as ObjectCreationExpressionSyntax;
if (SanityCheckingAnalysis.IsStateOfTheMachine(newObjStmt.Type.ToString(), machine))
{
Log log = new Log(method, machine, state, null);
log.AddTrace(newObjStmt.ToString(), newObjStmt.SyntaxTree.FilePath, newObjStmt.SyntaxTree.
GetLineSpan(newObjStmt.Span).StartLinePosition.Line + 1);
AnalysisErrorReporter.ReportExplicitStateInitialisation(log);
}
}
}
}
else if (stmt is IfStatementSyntax)
{
var ifStmt = stmt as IfStatementSyntax;
if (ifStmt.Statement is BlockSyntax)
{
var ifBlockStmt = ifStmt.Statement as BlockSyntax;
foreach (var ibs in ifBlockStmt.Statements)
{
SanityCheckingAnalysis.CheckStatement(ibs, method, machine, state);
}
if (ifStmt.Else != null)
{
if (ifStmt.Else.Statement is IfStatementSyntax)
{
SanityCheckingAnalysis.CheckStatement(ifStmt.Else.Statement,
method, machine, state);
}
else if (ifStmt.Else.Statement is BlockSyntax)
{
var elseBlockStmt = ifStmt.Else.Statement as BlockSyntax;
foreach (var ebs in elseBlockStmt.Statements)
{
SanityCheckingAnalysis.CheckStatement(ebs, method, machine, state);
}
}
}
}
else
{
SanityCheckingAnalysis.CheckStatement(ifStmt.Statement, method, machine, state);
}
}
else if (stmt is ForStatementSyntax)
{
var forStmt = stmt as ForStatementSyntax;
if (forStmt.Statement is BlockSyntax)
{
var forBlockStmt = forStmt.Statement as BlockSyntax;
foreach (var fbs in forBlockStmt.Statements)
{
SanityCheckingAnalysis.CheckStatement(fbs, method, machine, state);
}
}
else
{
SanityCheckingAnalysis.CheckStatement(forStmt.Statement, method, machine, state);
}
}
else if (stmt is ForEachStatementSyntax)
{
var forEachStmt = stmt as ForEachStatementSyntax;
if (forEachStmt.Statement is BlockSyntax)
{
var forEachBlockStmt = forEachStmt.Statement as BlockSyntax;
foreach (var fbs in forEachBlockStmt.Statements)
{
SanityCheckingAnalysis.CheckStatement(fbs, method, machine, state);
}
}
else
{
SanityCheckingAnalysis.CheckStatement(forEachStmt.Statement, method, machine, state);
}
}
else if (stmt is WhileStatementSyntax)
{
var whileStmt = stmt as WhileStatementSyntax;
if (whileStmt.Statement is BlockSyntax)
{
var whileBlockStmt = whileStmt.Statement as BlockSyntax;
foreach (var wbs in whileBlockStmt.Statements)
{
SanityCheckingAnalysis.CheckStatement(wbs, method, machine, state);
}
}
else
{
SanityCheckingAnalysis.CheckStatement(whileStmt.Statement, method, machine, state);
}
}
else if (stmt is DoStatementSyntax)
{
var doStmt = stmt as DoStatementSyntax;
if (doStmt.Statement is BlockSyntax)
{
var doBlockStmt = doStmt.Statement as BlockSyntax;
foreach (var dbs in doBlockStmt.Statements)
{
SanityCheckingAnalysis.CheckStatement(dbs, method, machine, state);
}
}
else
{
SanityCheckingAnalysis.CheckStatement(doStmt.Statement, method, machine, state);
}
}
else if (stmt is SwitchStatementSyntax)
{
var switchStmt = stmt as SwitchStatementSyntax;
foreach (var section in switchStmt.Sections)
{
foreach (var sbs in section.Statements)
{
SanityCheckingAnalysis.CheckStatement(sbs, method, machine, state);
}
}
}
else if (stmt is TryStatementSyntax)
{
var tryStmt = stmt as TryStatementSyntax;
foreach (var tbs in tryStmt.Block.Statements)
{
SanityCheckingAnalysis.CheckStatement(tbs, method, machine, state);
}
foreach (var ctch in tryStmt.Catches)
{
foreach (var cbs in ctch.Block.Statements)
{
SanityCheckingAnalysis.CheckStatement(cbs, method, machine, state);
}
}
if (tryStmt.Finally != null)
{
foreach (var tbs in tryStmt.Finally.Block.Statements)
{
SanityCheckingAnalysis.CheckStatement(tbs, method, machine, state);
}
}
}
else if (stmt is UsingStatementSyntax)
{
var usingStmt = stmt as UsingStatementSyntax;
var usingBlockStmt = usingStmt.Statement as BlockSyntax;
foreach (var ubs in usingBlockStmt.Statements)
{
SanityCheckingAnalysis.CheckStatement(ubs, method, machine, state);
}
}
}