private Bpl.Cmd getNavigationCheckAssign(Sink sink, bool value)
{
List <Bpl.AssignLhs> lhs = new List <Bpl.AssignLhs>();
List <Bpl.Expr> rhs = new List <Bpl.Expr>();
Bpl.AssignLhs assignee = new Bpl.SimpleAssignLhs(Bpl.Token.NoToken, new Bpl.IdentifierExpr(Bpl.Token.NoToken,
sink.FindOrCreateGlobalVariable(PhoneCodeHelper.BOOGIE_NAVIGATION_CHECK_VARIABLE, Bpl.Type.Bool)));
lhs.Add(assignee);
rhs.Add(value ? Bpl.IdentifierExpr.True : Bpl.IdentifierExpr.False);
Bpl.AssignCmd assignCmd = new Bpl.AssignCmd(Bpl.Token.NoToken, lhs, rhs);
return(assignCmd);
}
public Bpl.AssignCmd createBoogieNavigationUpdateCmd(Sink sink)
{
// the block is a potential page changer
List <Bpl.AssignLhs> lhs = new List <Bpl.AssignLhs>();
List <Bpl.Expr> rhs = new List <Bpl.Expr>();
Bpl.Expr value = new Bpl.LiteralExpr(Bpl.Token.NoToken, false);
rhs.Add(value);
Bpl.SimpleAssignLhs assignee =
new Bpl.SimpleAssignLhs(Bpl.Token.NoToken,
new Bpl.IdentifierExpr(Bpl.Token.NoToken,
sink.FindOrCreateGlobalVariable(PhoneCodeHelper.BOOGIE_CONTINUE_ON_PAGE_VARIABLE, Bpl.Type.Bool)));
lhs.Add(assignee);
Bpl.AssignCmd assignCmd = new Bpl.AssignCmd(Bpl.Token.NoToken, lhs, rhs);
return(assignCmd);
}
public override AssignLhs VisitSimpleAssignLhs(SimpleAssignLhs node) {
//Contract.Requires(node != null);
Contract.Ensures(Contract.Result<AssignLhs>() != null);
return base.VisitSimpleAssignLhs((SimpleAssignLhs)node.Clone());
}
public Implementation Inject(Implementation implementation, Program programInCachedSnapshot)
{
Contract.Requires(implementation != null && programInCachedSnapshot != null);
this.programInCachedSnapshot = programInCachedSnapshot;
assumptionVariableCount = 0;
temporaryVariableCount = 0;
currentImplementation = implementation;
#region Introduce explict assumption about the precondition.
var oldProc = programInCachedSnapshot.FindProcedure(currentImplementation.Proc.Name);
if (oldProc != null
&& oldProc.DependencyChecksum != currentImplementation.Proc.DependencyChecksum
&& currentImplementation.ExplicitAssumptionAboutCachedPrecondition == null)
{
var axioms = new List<Axiom>();
var after = new List<Cmd>();
Expr assumedExpr = new LiteralExpr(Token.NoToken, false);
var canUseSpecs = DependencyCollector.CanExpressOldSpecs(oldProc, Program, true);
if (canUseSpecs && oldProc.SignatureEquals(currentImplementation.Proc))
{
var always = Substituter.SubstitutionFromHashtable(currentImplementation.GetImplFormalMap(), true, currentImplementation.Proc);
var forOld = Substituter.SubstitutionFromHashtable(new Dictionary<Variable, Expr>());
var clauses = oldProc.Requires.Select(r => Substituter.FunctionCallReresolvingApply(always, forOld, r.Condition, Program));
var conj = Expr.And(clauses, true);
assumedExpr = conj != null ? FunctionExtractor.Extract(conj, Program, axioms) : new LiteralExpr(Token.NoToken, true);
}
if (assumedExpr != null)
{
var lv = new LocalVariable(Token.NoToken,
new TypedIdent(Token.NoToken, string.Format("a##cached##{0}", FreshAssumptionVariableName), Type.Bool),
new QKeyValue(Token.NoToken, "assumption", new List<object>(), null));
currentImplementation.InjectAssumptionVariable(lv, !canUseSpecs);
var lhs = new SimpleAssignLhs(Token.NoToken, new IdentifierExpr(Token.NoToken, lv));
var rhs = LiteralExpr.And(new IdentifierExpr(Token.NoToken, lv), assumedExpr);
var assumed = new AssignCmd(currentImplementation.tok, new List<AssignLhs> { lhs }, new List<Expr> { rhs });
assumed.IrrelevantForChecksumComputation = true;
currentImplementation.ExplicitAssumptionAboutCachedPrecondition = assumed;
after.Add(assumed);
}
if (CommandLineOptions.Clo.TraceCachingForTesting || CommandLineOptions.Clo.TraceCachingForBenchmarking)
{
using (var tokTxtWr = new TokenTextWriter("<console>", Console.Out, false, false))
{
var loc = currentImplementation.tok != null && currentImplementation.tok != Token.NoToken ? string.Format("{0}({1},{2})", currentImplementation.tok.filename, currentImplementation.tok.line, currentImplementation.tok.col) : "<unknown location>";
Console.Out.WriteLine("Processing implementation {0} (at {1}):", currentImplementation.Name, loc);
foreach (var a in axioms)
{
Console.Out.Write(" >>> added axiom: ");
a.Expr.Emit(tokTxtWr);
Console.Out.WriteLine();
}
foreach (var b in after)
{
Console.Out.Write(" >>> added after assuming the current precondition: ");
b.Emit(tokTxtWr, 0);
}
}
}
}
#endregion
var result = VisitImplementation(currentImplementation);
currentImplementation = null;
this.programInCachedSnapshot = null;
return result;
}
public override Cmd VisitCallCmd(CallCmd node)
{
var result = base.VisitCallCmd(node);
var oldProc = programInCachedSnapshot.FindProcedure(node.Proc.Name);
if (oldProc != null
&& oldProc.DependencyChecksum != node.Proc.DependencyChecksum
&& node.AssignedAssumptionVariable == null)
{
var before = new List<Cmd>();
var beforePrecondtionCheck = new List<Cmd>();
var after = new List<Cmd>();
var axioms = new List<Axiom>();
Expr assumedExpr = new LiteralExpr(Token.NoToken, false);
// TODO(wuestholz): Try out two alternatives: only do this for low priority implementations or not at all.
var canUseSpecs = DependencyCollector.CanExpressOldSpecs(oldProc, Program);
if (canUseSpecs && oldProc.SignatureEquals(node.Proc))
{
var desugaring = node.Desugaring;
Contract.Assert(desugaring != null);
var precond = node.CheckedPrecondition(oldProc, Program, e => FunctionExtractor.Extract(e, Program, axioms));
if (precond != null)
{
var assume = new AssumeCmd(node.tok, precond, new QKeyValue(Token.NoToken, "precondition_previous_snapshot", new List<object>(), null));
assume.IrrelevantForChecksumComputation = true;
beforePrecondtionCheck.Add(assume);
}
var unmods = node.UnmodifiedBefore(oldProc);
var eqs = new List<Expr>();
foreach (var unmod in unmods)
{
var oldUnmod = new LocalVariable(Token.NoToken,
new TypedIdent(Token.NoToken, string.Format("{0}##old##{1}", unmod.Name, FreshTemporaryVariableName), unmod.Type));
var lhs = new SimpleAssignLhs(Token.NoToken, new IdentifierExpr(Token.NoToken, oldUnmod));
var rhs = new IdentifierExpr(Token.NoToken, unmod.Decl);
var cmd = new AssignCmd(Token.NoToken, new List<AssignLhs> { lhs }, new List<Expr> { rhs });
cmd.IrrelevantForChecksumComputation = true;
before.Add(cmd);
var eq = LiteralExpr.Eq(new IdentifierExpr(Token.NoToken, oldUnmod), new IdentifierExpr(Token.NoToken, unmod.Decl));
eq.Type = Type.Bool;
eq.TypeParameters = SimpleTypeParamInstantiation.EMPTY;
eqs.Add(eq);
}
var mods = node.ModifiedBefore(oldProc);
var oldSubst = new Dictionary<Variable, Expr>();
foreach (var mod in mods)
{
var oldMod = new LocalVariable(Token.NoToken,
new TypedIdent(Token.NoToken, string.Format("{0}##old##{1}", mod.Name, FreshTemporaryVariableName), mod.Type));
oldSubst[mod.Decl] = new IdentifierExpr(Token.NoToken, oldMod);
var lhs = new SimpleAssignLhs(Token.NoToken, new IdentifierExpr(Token.NoToken, oldMod));
var rhs = new IdentifierExpr(Token.NoToken, mod.Decl);
var cmd = new AssignCmd(Token.NoToken, new List<AssignLhs> { lhs }, new List<Expr> { rhs });
cmd.IrrelevantForChecksumComputation = true;
before.Add(cmd);
}
assumedExpr = node.Postcondition(oldProc, eqs, oldSubst, Program, e => FunctionExtractor.Extract(e, Program, axioms));
if (assumedExpr == null)
{
assumedExpr = new LiteralExpr(Token.NoToken, true);
}
}
if (assumedExpr != null)
{
var lv = new LocalVariable(Token.NoToken,
new TypedIdent(Token.NoToken, string.Format("a##cached##{0}", FreshAssumptionVariableName), Type.Bool),
new QKeyValue(Token.NoToken, "assumption", new List<object>(), null));
node.AssignedAssumptionVariable = lv;
currentImplementation.InjectAssumptionVariable(lv, !canUseSpecs);
var lhs = new SimpleAssignLhs(Token.NoToken, new IdentifierExpr(Token.NoToken, lv));
var rhs = LiteralExpr.And(new IdentifierExpr(Token.NoToken, lv), assumedExpr);
var assumed = new AssignCmd(node.tok, new List<AssignLhs> { lhs }, new List<Expr> { rhs });
assumed.IrrelevantForChecksumComputation = true;
after.Add(assumed);
}
node.ExtendDesugaring(before, beforePrecondtionCheck, after);
if (CommandLineOptions.Clo.TraceCachingForTesting || CommandLineOptions.Clo.TraceCachingForBenchmarking)
{
using (var tokTxtWr = new TokenTextWriter("<console>", Console.Out, false, false))
{
var loc = node.tok != null && node.tok != Token.NoToken ? string.Format("{0}({1},{2})", node.tok.filename, node.tok.line, node.tok.col) : "<unknown location>";
Console.Out.WriteLine("Processing call to procedure {0} in implementation {1} (at {2}):", node.Proc.Name, currentImplementation.Name, loc);
foreach (var a in axioms)
{
Console.Out.Write(" >>> added axiom: ");
a.Expr.Emit(tokTxtWr);
Console.Out.WriteLine();
}
foreach (var b in before)
{
Console.Out.Write(" >>> added before: ");
b.Emit(tokTxtWr, 0);
}
foreach (var b in beforePrecondtionCheck)
{
Console.Out.Write(" >>> added before precondition check: ");
b.Emit(tokTxtWr, 0);
}
foreach (var a in after)
{
Console.Out.Write(" >>> added after: ");
a.Emit(tokTxtWr, 0);
}
}
}
}
return result;
}
public virtual AssignLhs VisitSimpleAssignLhs(SimpleAssignLhs node) {
Contract.Requires(node != null);
Contract.Ensures(Contract.Result<AssignLhs>() != null);
node.AssignedVariable =
(IdentifierExpr)this.VisitIdentifierExpr(node.AssignedVariable);
return node;
}
public override AssignLhs VisitSimpleAssignLhs(SimpleAssignLhs node)
{
Contract.Ensures(Contract.Result<AssignLhs>() == node);
this.VisitIdentifierExpr(node.AssignedVariable);
return node;
}
void LabelOrAssign(out Cmd c, out IToken label) {
IToken/*!*/ id; IToken/*!*/ x, y; Expr/*!*/ e0;
c = dummyCmd; label = null;
AssignLhs/*!*/ lhs;
List<AssignLhs/*!*/>/*!*/ lhss;
List<Expr/*!*/>/*!*/ rhss;
List<Expr/*!*/>/*!*/ indexes;
Ident(out id);
x = t;
if (la.kind == 12) {
Get();
c = null; label = x;
} else if (la.kind == 13 || la.kind == 18 || la.kind == 51) {
lhss = new List<AssignLhs/*!*/>();
lhs = new SimpleAssignLhs(id, new IdentifierExpr(id, id.val));
while (la.kind == 18) {
MapAssignIndex(out y, out indexes);
lhs = new MapAssignLhs(y, lhs, indexes);
}
lhss.Add(lhs);
while (la.kind == 13) {
Get();
Ident(out id);
lhs = new SimpleAssignLhs(id, new IdentifierExpr(id, id.val));
while (la.kind == 18) {
MapAssignIndex(out y, out indexes);
lhs = new MapAssignLhs(y, lhs, indexes);
}
lhss.Add(lhs);
}
Expect(51);
x = t; /* use location of := */
Expression(out e0);
rhss = new List<Expr/*!*/> ();
rhss.Add(e0);
while (la.kind == 13) {
Get();
Expression(out e0);
rhss.Add(e0);
}
Expect(9);
c = new AssignCmd(x, lhss, rhss);
} else SynErr(111);
}
/// <summary>
///
/// </summary>
public override void TraverseChildren(IMethodDefinition method)
{
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) // 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");
}
// FEEDBACK inline handler methods to avoid more false alarms
if (PhoneCodeHelper.instance().PhoneFeedbackToggled&& PhoneCodeHelper.instance().isMethodInputHandlerOrFeedbackOverride(method) &&
!PhoneCodeHelper.instance().isMethodIgnoredForFeedback(method))
{
proc.AddAttribute("inline", new Bpl.LiteralExpr(Bpl.Token.NoToken, Microsoft.Basetypes.BigNum.ONE));
PhoneCodeHelper.instance().trackCallableMethod(proc);
}
try {
StatementTraverser stmtTraverser = this.Factory.MakeStatementTraverser(this.sink, this.PdbReader, false);
// FEEDBACK if this is a feedback method it will be plagued with false asserts. They will trigger if $Exception becomes other than null
// FEEDBACK for modular analysis we need it to be non-null at the start
// FEEDBACK also, callee is obviously non null
IMethodDefinition translatedMethod = sink.getMethodBeingTranslated();
if (PhoneCodeHelper.instance().PhoneFeedbackToggled&& translatedMethod != null &&
PhoneCodeHelper.instance().isMethodInputHandlerOrFeedbackOverride(translatedMethod))
{
// assign null to exception
List <Bpl.AssignLhs> assignee = new List <Bpl.AssignLhs>();
Bpl.AssignLhs exceptionAssignee = new Bpl.SimpleAssignLhs(Bpl.Token.NoToken, Bpl.Expr.Ident(this.sink.Heap.ExceptionVariable));
assignee.Add(exceptionAssignee);
List <Bpl.Expr> value = new List <Bpl.Expr>();
value.Add(Bpl.Expr.Ident(this.sink.Heap.NullRef));
Bpl.Cmd exceptionAssign = new Bpl.AssignCmd(Bpl.Token.NoToken, assignee, value);
stmtTraverser.StmtBuilder.Add(exceptionAssign);
}
#region Add assignments from In-Params to local-Params
foreach (MethodParameter mparam in formalMap)
{
if (mparam.inParameterCopy != null)
{
Bpl.IToken tok = method.Token();
stmtTraverser.StmtBuilder.Add(Bpl.Cmd.SimpleAssign(tok,
new Bpl.IdentifierExpr(tok, mparam.outParameterCopy),
new Bpl.IdentifierExpr(tok, mparam.inParameterCopy)));
}
}
#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);
} catch (Exception e) {
Console.WriteLine("Error encountered during translation of \n '{0}':",
MemberHelper.GetMethodSignature(method, NameFormattingOptions.None));
Console.WriteLine("\t>>" + e.Message);
} finally {
}
}
/// <summary>
///
/// </summary>
public override void TraverseChildren(IMethodDefinition method) {
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) { // 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");
}
// FEEDBACK inline handler methods to avoid more false alarms
if (PhoneCodeHelper.instance().PhoneFeedbackToggled && PhoneCodeHelper.instance().isMethodInputHandlerOrFeedbackOverride(method) &&
!PhoneCodeHelper.instance().isMethodIgnoredForFeedback(method)) {
proc.AddAttribute("inline", new Bpl.LiteralExpr(Bpl.Token.NoToken, Microsoft.Basetypes.BigNum.ONE));
PhoneCodeHelper.instance().trackCallableMethod(proc);
}
try {
StatementTraverser stmtTraverser = this.Factory.MakeStatementTraverser(this.sink, this.PdbReader, false);
// FEEDBACK if this is a feedback method it will be plagued with false asserts. They will trigger if $Exception becomes other than null
// FEEDBACK for modular analysis we need it to be non-null at the start
// FEEDBACK also, callee is obviously non null
IMethodDefinition translatedMethod= sink.getMethodBeingTranslated();
if (PhoneCodeHelper.instance().PhoneFeedbackToggled && translatedMethod != null &&
PhoneCodeHelper.instance().isMethodInputHandlerOrFeedbackOverride(translatedMethod)) {
// assign null to exception
List<Bpl.AssignLhs> assignee= new List<Bpl.AssignLhs>();
Bpl.AssignLhs exceptionAssignee= new Bpl.SimpleAssignLhs(Bpl.Token.NoToken, Bpl.Expr.Ident(this.sink.Heap.ExceptionVariable));
assignee.Add(exceptionAssignee);
List<Bpl.Expr> value= new List<Bpl.Expr>();
value.Add(Bpl.Expr.Ident(this.sink.Heap.NullRef));
Bpl.Cmd exceptionAssign= new Bpl.AssignCmd(Bpl.Token.NoToken, assignee, value);
stmtTraverser.StmtBuilder.Add(exceptionAssign);
}
#region Add assignments from In-Params to local-Params
foreach (MethodParameter mparam in formalMap) {
if (mparam.inParameterCopy != null) {
Bpl.IToken tok = method.Token();
stmtTraverser.StmtBuilder.Add(Bpl.Cmd.SimpleAssign(tok,
new Bpl.IdentifierExpr(tok, mparam.outParameterCopy),
new Bpl.IdentifierExpr(tok, mparam.inParameterCopy)));
}
}
#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);
} catch (Exception e) {
Console.WriteLine("Error encountered during translation of \n '{0}':",
MemberHelper.GetMethodSignature(method, NameFormattingOptions.None));
Console.WriteLine("\t>>" + e.Message);
} finally {
}
}
private Bpl.Cmd getNavigationCheckAssign(Sink sink, bool value) {
List<Bpl.AssignLhs> lhs = new List<Bpl.AssignLhs>();
List<Bpl.Expr> rhs = new List<Bpl.Expr>();
Bpl.AssignLhs assignee = new Bpl.SimpleAssignLhs(Bpl.Token.NoToken, new Bpl.IdentifierExpr(Bpl.Token.NoToken,
sink.FindOrCreateGlobalVariable(PhoneCodeHelper.BOOGIE_NAVIGATION_CHECK_VARIABLE, Bpl.Type.Bool)));
lhs.Add(assignee);
rhs.Add(value ? Bpl.IdentifierExpr.True : Bpl.IdentifierExpr.False);
Bpl.AssignCmd assignCmd = new Bpl.AssignCmd(Bpl.Token.NoToken, lhs, rhs);
return assignCmd;
}
public Bpl.AssignCmd createBoogieNavigationUpdateCmd(Sink sink) {
// the block is a potential page changer
List<Bpl.AssignLhs> lhs = new List<Bpl.AssignLhs>();
List<Bpl.Expr> rhs = new List<Bpl.Expr>();
Bpl.Expr value = new Bpl.LiteralExpr(Bpl.Token.NoToken, false);
rhs.Add(value);
Bpl.SimpleAssignLhs assignee =
new Bpl.SimpleAssignLhs(Bpl.Token.NoToken,
new Bpl.IdentifierExpr(Bpl.Token.NoToken,
sink.FindOrCreateGlobalVariable(PhoneCodeHelper.BOOGIE_CONTINUE_ON_PAGE_VARIABLE, Bpl.Type.Bool)));
lhs.Add(assignee);
Bpl.AssignCmd assignCmd = new Bpl.AssignCmd(Bpl.Token.NoToken, lhs, rhs);
return assignCmd;
}