/// <summary>
/// Creates a copy of another set of prototype exception spec rules.
/// </summary>
public RuleBasedPrototypeExceptionSpecs(RuleBasedPrototypeExceptionSpecs other)
{
this.instructionSpecs = new Dictionary <Type, Func <InstructionPrototype, ExceptionSpecification> >(
other.instructionSpecs);
this.intrinsicSpecs = new Dictionary <string, Func <IntrinsicPrototype, ExceptionSpecification> >(
other.intrinsicSpecs);
}
static RuleBasedPrototypeExceptionSpecs()
{
Default = new RuleBasedPrototypeExceptionSpecs();
// Instruction prototypes that never throw.
Default.Register <AllocaArrayPrototype>(ExceptionSpecification.NoThrow);
Default.Register <AllocaPrototype>(ExceptionSpecification.NoThrow);
Default.Register <BoxPrototype>(ExceptionSpecification.NoThrow);
Default.Register <ConstantPrototype>(ExceptionSpecification.NoThrow);
Default.Register <CopyPrototype>(ExceptionSpecification.NoThrow);
Default.Register <DynamicCastPrototype>(ExceptionSpecification.NoThrow);
Default.Register <GetStaticFieldPointerPrototype>(ExceptionSpecification.NoThrow);
Default.Register <LoadPrototype>(ExceptionSpecification.NoThrow);
Default.Register <ReinterpretCastPrototype>(ExceptionSpecification.NoThrow);
Default.Register <StorePrototype>(ExceptionSpecification.NoThrow);
// Instruction prototypes that may throw because of implicit null checks.
Default.Register <GetFieldPointerPrototype>(
new NullCheckExceptionSpecification(0, ExceptionSpecification.ThrowAny));
Default.Register <NewDelegatePrototype>(
proto => proto.Lookup == MethodLookup.Virtual
? new NullCheckExceptionSpecification(0, ExceptionSpecification.ThrowAny)
: ExceptionSpecification.NoThrow);
Default.Register <UnboxPrototype>(
new NullCheckExceptionSpecification(0, ExceptionSpecification.ThrowAny));
// Call-like instruction prototypes.
Default.Register <CallPrototype>(
proto => proto.Lookup == MethodLookup.Static
? proto.Callee.GetExceptionSpecification()
: ExceptionSpecification.ThrowAny);
Default.Register <NewObjectPrototype>(
proto => proto.Constructor.GetExceptionSpecification());
Default.Register <IndirectCallPrototype>(ExceptionSpecification.ThrowAny);
// Unchecked arithmetic intrinsics never throw.
foreach (var name in ArithmeticIntrinsics.Operators.All)
{
Default.Register(
ArithmeticIntrinsics.GetArithmeticIntrinsicName(name, false),
ExceptionSpecification.NoThrow);
}
// Array intrinsics are a little more complicated.
// TODO: model bounds checks somehow.
Default.Register(
ArrayIntrinsics.Namespace.GetIntrinsicName(ArrayIntrinsics.Operators.GetElementPointer),
ExceptionSpecification.ThrowAny);
Default.Register(
ArrayIntrinsics.Namespace.GetIntrinsicName(ArrayIntrinsics.Operators.LoadElement),
ExceptionSpecification.ThrowAny);
Default.Register(
ArrayIntrinsics.Namespace.GetIntrinsicName(ArrayIntrinsics.Operators.StoreElement),
ExceptionSpecification.ThrowAny);
Default.Register(
ArrayIntrinsics.Namespace.GetIntrinsicName(ArrayIntrinsics.Operators.GetLength),
new NullCheckExceptionSpecification(0, ExceptionSpecification.ThrowAny));
Default.Register(
ArrayIntrinsics.Namespace.GetIntrinsicName(ArrayIntrinsics.Operators.NewArray),
ExceptionSpecification.NoThrow);
// Exception intrinsics.
Default.Register(
ExceptionIntrinsics.Namespace.GetIntrinsicName(ExceptionIntrinsics.Operators.Capture),
ExceptionSpecification.NoThrow);
Default.Register(
ExceptionIntrinsics.Namespace.GetIntrinsicName(ExceptionIntrinsics.Operators.GetCapturedException),
ExceptionSpecification.NoThrow);
Default.Register(
ExceptionIntrinsics.Namespace.GetIntrinsicName(ExceptionIntrinsics.Operators.Rethrow),
ExceptionSpecification.ThrowAny);
Default.Register(
ExceptionIntrinsics.Namespace.GetIntrinsicName(ExceptionIntrinsics.Operators.Throw),
proto => ExceptionSpecification.Exact.Create(proto.ParameterTypes[0]));
// Object intrinsics.
// TODO: model exception thrown by type check.
Default.Register(
ObjectIntrinsics.Namespace.GetIntrinsicName(ObjectIntrinsics.Operators.UnboxAny),
ExceptionSpecification.ThrowAny);
// Memory intrinsics.
Default.Register(
MemoryIntrinsics.Namespace.GetIntrinsicName(MemoryIntrinsics.Operators.AllocaPinned),
ExceptionSpecification.NoThrow);
}
/// <summary>
/// Creates a copy of another set of prototype exception spec rules.
/// </summary>
public RuleBasedPrototypeExceptionSpecs(RuleBasedPrototypeExceptionSpecs other)
{
this.store = new RuleBasedSpecStore <ExceptionSpecification>(other.store);
}