/// <summary>
///
/// </summary>
public override void TraverseChildren(IMethodDefinition method)
{
if (TranslationHelper.HasAttribute(method, "BCTOmitAttribute"))
{
return;
}
if (method.IsStaticConstructor)
{
this.sawCctor = true;
}
bool isEventAddOrRemove = method.IsSpecialName && (method.Name.Value.StartsWith("add_") || method.Name.Value.StartsWith("remove_"));
if (isEventAddOrRemove)
{
return;
}
Sink.ProcedureInfo procInfo;
IMethodDefinition stubMethod = null;
if (IsStubMethod(method, out stubMethod))
{
procInfo = this.sink.FindOrCreateProcedure(stubMethod);
}
else
{
procInfo = this.sink.FindOrCreateProcedure(method);
}
if (method.IsAbstract || method.IsExternal || TranslationHelper.HasAttribute(method, "BCTOmitImplementationAttribute")
// CCI is currently hacked to skip decompiling all method bodies in
// compiler-generated classes. This is nontrivial to test for here, so
// just omit implementation of all methods whose bodies haven't been
// decompiled, at risk of silently hiding other problems.
|| !(method.Body is ISourceMethodBody))
{
// we're done, just define the procedure
return;
}
this.sink.BeginMethod(method);
var decl = procInfo.Decl;
var proc = decl as Bpl.Procedure;
var formalMap = procInfo.FormalMap;
if (this.entryPoint != null && method.InternedKey == this.entryPoint.InternedKey)
{
decl.AddAttribute("entrypoint");
}
try {
StatementTraverser stmtTraverser = this.Factory.MakeStatementTraverser(this.sink, this.PdbReader, false);
// Manually set the beginning of the method as the source location for
// BCT synthetic code until we traverse the first real statement, which
// will automatically pick up its source location. Needed for record
// calls to show up in the trace.
stmtTraverser.EmitSourceContext(method);
if (!method.IsStatic)
{
stmtTraverser.AddRecordCall("this",
sink.CciTypeToBoogie(method.ContainingType),
new Bpl.IdentifierExpr(Bpl.Token.NoToken, sink.ThisVariable));
}
#region Add assignments from In-Params to local-Params
foreach (MethodParameter mparam in formalMap)
{
if (mparam.inParameterCopy != null)
{
Bpl.IToken tok = method.Token();
Bpl.Expr rhs = new Bpl.IdentifierExpr(tok, mparam.inParameterCopy);
stmtTraverser.AddRecordCall(mparam.underlyingParameter.Name.Value,
mparam.inParameterCopy.TypedIdent.Type, rhs);
stmtTraverser.StmtBuilder.Add(Bpl.Cmd.SimpleAssign(tok,
new Bpl.IdentifierExpr(tok, mparam.outParameterCopy), rhs));
}
}
#endregion
#region For non-deferring ctors and all cctors, initialize all fields to null-equivalent values
var inits = InitializeFieldsInConstructor(method);
if (0 < inits.Count)
{
foreach (var s in inits)
{
stmtTraverser.Traverse(s);
}
}
#endregion
#region Translate method attributes
// Don't need an expression translator because there is a limited set of things
// that can appear as arguments to custom attributes
// TODO: decode enum values
try {
foreach (var a in method.Attributes)
{
var attrName = TypeHelper.GetTypeName(a.Type);
if (attrName.EndsWith("Attribute"))
{
attrName = attrName.Substring(0, attrName.Length - 9);
}
var args = new List <object>();
foreach (var c in a.Arguments)
{
var mdc = c as IMetadataConstant;
if (mdc != null)
{
object o;
if (mdc.Type.IsEnum)
{
var lit = Bpl.Expr.Literal((int)mdc.Value);
lit.Type = Bpl.Type.Int;
o = lit;
}
else
{
switch (mdc.Type.TypeCode)
{
case PrimitiveTypeCode.Boolean:
o = (bool)mdc.Value ? Bpl.Expr.True : Bpl.Expr.False;
break;
case PrimitiveTypeCode.Int32:
var lit = Bpl.Expr.Literal((int)mdc.Value);
lit.Type = Bpl.Type.Int;
o = lit;
break;
case PrimitiveTypeCode.String:
o = mdc.Value;
break;
default:
throw new InvalidCastException("Invalid metadata constant type");
}
}
args.Add(o);
}
}
decl.AddAttribute(attrName, args.ToArray());
}
} catch (InvalidCastException) {
Console.WriteLine("Warning: Cannot translate custom attributes for method\n '{0}':",
MemberHelper.GetMethodSignature(method, NameFormattingOptions.None));
Console.WriteLine(" >>Skipping attributes, continuing with method translation");
}
#endregion
#region Translate body
var helperTypes = stmtTraverser.TranslateMethod(method);
if (helperTypes != null)
{
this.privateTypes.AddRange(helperTypes);
}
#endregion
#region Create Local Vars For Implementation
List <Bpl.Variable> vars = new List <Bpl.Variable>();
foreach (MethodParameter mparam in formalMap)
{
if (!mparam.underlyingParameter.IsByReference)
{
vars.Add(mparam.outParameterCopy);
}
}
foreach (Bpl.Variable v in this.sink.LocalVarMap.Values)
{
vars.Add(v);
}
// LocalExcVariable holds the exception thrown by any method called from this method, even if this method swallows all exceptions
if (0 < this.sink.Options.modelExceptions)
{
vars.Add(procInfo.LocalExcVariable);
}
vars.Add(procInfo.LabelVariable);
List <Bpl.Variable> vseq = new List <Bpl.Variable>(vars.ToArray());
#endregion
var translatedBody = stmtTraverser.StmtBuilder.Collect(Bpl.Token.NoToken);
#region Add implementation to Boogie program
if (proc != null)
{
Bpl.Implementation impl =
new Bpl.Implementation(method.Token(),
decl.Name,
new List <Bpl.TypeVariable>(),
decl.InParams,
decl.OutParams,
vseq,
translatedBody);
impl.Proc = proc;
this.sink.TranslatedProgram.AddTopLevelDeclaration(impl);
}
else // method is translated as a function
//var func = decl as Bpl.Function;
//Contract.Assume(func != null);
//var blocks = new List<Bpl.Block>();
//var counter = 0;
//var returnValue = decl.OutParams[0];
//foreach (var bb in translatedBody.BigBlocks) {
// var label = bb.LabelName ?? "L" + counter++.ToString();
// var newTransferCmd = (bb.tc is Bpl.ReturnCmd)
// ? new Bpl.ReturnExprCmd(bb.tc.tok, Bpl.Expr.Ident(returnValue))
// : bb.tc;
// var b = new Bpl.Block(bb.tok, label, bb.simpleCmds, newTransferCmd);
// blocks.Add(b);
//}
//var localVars = new List<Bpl.Variable>();
//localVars.Add(returnValue);
//func.Body = new Bpl.CodeExpr(localVars, blocks);
{
}
#endregion
} catch (TranslationException te) {
Console.WriteLine("Translation error in body of \n '{0}':",
MemberHelper.GetMethodSignature(method, NameFormattingOptions.None));
Console.WriteLine("\t" + te.Message + "\n" + te.StackTrace);
} catch (Exception e) {
Console.WriteLine("Error encountered during translation of \n '{0}':",
MemberHelper.GetMethodSignature(method, NameFormattingOptions.None));
Console.WriteLine("\t>>" + e.Message + "\n" + e.StackTrace);
} finally {
}
}
public override void TraverseChildren(ITryCatchFinallyStatement tryCatchFinallyStatement)
{
if (this.sink.Options.modelExceptions == 0)
{
this.Traverse(tryCatchFinallyStatement.TryBody);
if (tryCatchFinallyStatement.FinallyBody != null)
{
this.Traverse(tryCatchFinallyStatement.FinallyBody);
}
return;
}
this.sink.nestedTryCatchFinallyStatements.Add(new Tuple <ITryCatchFinallyStatement, Sink.TryCatchFinallyContext>(tryCatchFinallyStatement, Sink.TryCatchFinallyContext.InTry));
this.Traverse(tryCatchFinallyStatement.TryBody);
StmtBuilder.Add(TranslationHelper.BuildAssignCmd(Bpl.Expr.Ident(this.sink.LabelVariable), Bpl.Expr.Literal(-1)));
StmtBuilder.Add(new Bpl.GotoCmd(Bpl.Token.NoToken, new List <string>(new string[] { this.sink.FindOrCreateFinallyLabel(tryCatchFinallyStatement) })));
this.sink.nestedTryCatchFinallyStatements.RemoveAt(this.sink.nestedTryCatchFinallyStatements.Count - 1);
StmtBuilder.AddLabelCmd(this.sink.FindOrCreateCatchLabel(tryCatchFinallyStatement));
StmtBuilder.Add(TranslationHelper.BuildAssignCmd(Bpl.Expr.Ident(this.sink.LocalExcVariable), Bpl.Expr.Ident(this.sink.Heap.ExceptionVariable)));
StmtBuilder.Add(TranslationHelper.BuildAssignCmd(Bpl.Expr.Ident(this.sink.Heap.ExceptionVariable), Bpl.Expr.Ident(this.sink.Heap.NullRef)));
List <Bpl.StmtList> catchStatements = new List <Bpl.StmtList>();
List <Bpl.Expr> typeReferences = new List <Bpl.Expr>();
this.sink.nestedTryCatchFinallyStatements.Add(new Tuple <ITryCatchFinallyStatement, Sink.TryCatchFinallyContext>(tryCatchFinallyStatement, Sink.TryCatchFinallyContext.InCatch));
foreach (ICatchClause catchClause in tryCatchFinallyStatement.CatchClauses)
{
typeReferences.Insert(0, this.sink.FindOrCreateTypeReference(catchClause.ExceptionType, true));
StatementTraverser catchTraverser = this.factory.MakeStatementTraverser(this.sink, this.PdbReader, this.contractContext);
if (catchClause.ExceptionContainer != Dummy.LocalVariable)
{
Bpl.Variable catchClauseVariable = this.sink.FindOrCreateLocalVariable(catchClause.ExceptionContainer);
var exceptionExpr = Bpl.Expr.Ident(this.sink.LocalExcVariable);
catchTraverser.AddRecordCall(catchClause.ExceptionContainer.Name.Value, sink.Heap.RefType, exceptionExpr);
catchTraverser.StmtBuilder.Add(TranslationHelper.BuildAssignCmd(Bpl.Expr.Ident(catchClauseVariable), exceptionExpr));
}
catchTraverser.Traverse(catchClause.Body);
catchTraverser.StmtBuilder.Add(TranslationHelper.BuildAssignCmd(Bpl.Expr.Ident(this.sink.LabelVariable), Bpl.Expr.Literal(-1)));
catchTraverser.StmtBuilder.Add(new Bpl.GotoCmd(Bpl.Token.NoToken, new List <string>(new string[] { this.sink.FindOrCreateFinallyLabel(tryCatchFinallyStatement) })));
catchStatements.Insert(0, catchTraverser.StmtBuilder.Collect(catchClause.Token()));
}
Bpl.IfCmd elseIfCmd = new Bpl.IfCmd(Bpl.Token.NoToken, Bpl.Expr.Literal(false), TranslationHelper.BuildStmtList(new Bpl.ReturnCmd(Bpl.Token.NoToken)), null, null);
Bpl.Expr dynTypeOfOperand = this.sink.Heap.DynamicType(Bpl.Expr.Ident(this.sink.LocalExcVariable));
for (int i = 0; i < catchStatements.Count; i++)
{
Bpl.Expr expr = new Bpl.NAryExpr(Bpl.Token.NoToken, new Bpl.FunctionCall(this.sink.Heap.Subtype), new List <Bpl.Expr>(new Bpl.Expr[] { dynTypeOfOperand, typeReferences[i] }));
elseIfCmd = new Bpl.IfCmd(Bpl.Token.NoToken, expr, catchStatements[i], elseIfCmd, null);
}
this.StmtBuilder.Add(elseIfCmd);
this.StmtBuilder.Add(TranslationHelper.BuildAssignCmd(Bpl.Expr.Ident(this.sink.Heap.ExceptionVariable), Bpl.Expr.Ident(this.sink.LocalExcVariable)));
PropagateException();
this.sink.nestedTryCatchFinallyStatements.RemoveAt(this.sink.nestedTryCatchFinallyStatements.Count - 1);
this.StmtBuilder.AddLabelCmd(this.sink.FindOrCreateFinallyLabel(tryCatchFinallyStatement));
if (tryCatchFinallyStatement.FinallyBody != null)
{
this.sink.nestedTryCatchFinallyStatements.Add(new Tuple <ITryCatchFinallyStatement, Sink.TryCatchFinallyContext>(tryCatchFinallyStatement, Sink.TryCatchFinallyContext.InFinally));
Bpl.Variable savedExcVariable = this.sink.CreateFreshLocal(this.sink.Heap.RefType);
Bpl.Variable savedLabelVariable = this.sink.CreateFreshLocal(Bpl.Type.Int);
StmtBuilder.Add(TranslationHelper.BuildAssignCmd(Bpl.Expr.Ident(savedExcVariable), Bpl.Expr.Ident(this.sink.Heap.ExceptionVariable)));
StmtBuilder.Add(TranslationHelper.BuildAssignCmd(Bpl.Expr.Ident(savedLabelVariable), Bpl.Expr.Ident(this.sink.LabelVariable)));
this.Traverse(tryCatchFinallyStatement.FinallyBody);
StmtBuilder.Add(TranslationHelper.BuildAssignCmd(Bpl.Expr.Ident(this.sink.Heap.ExceptionVariable), Bpl.Expr.Ident(savedExcVariable)));
StmtBuilder.Add(TranslationHelper.BuildAssignCmd(Bpl.Expr.Ident(this.sink.LabelVariable), Bpl.Expr.Ident(savedLabelVariable)));
this.sink.nestedTryCatchFinallyStatements.RemoveAt(this.sink.nestedTryCatchFinallyStatements.Count - 1);
}
GenerateDispatchContinuation(tryCatchFinallyStatement);
StmtBuilder.AddLabelCmd(this.sink.FindOrCreateContinuationLabel(tryCatchFinallyStatement));
PropagateExceptionIfAny();
}