public virtual MemberSpec InflateMember (TypeParameterInflator inflator)
{
var inflated = (MemberSpec) MemberwiseClone ();
inflated.declaringType = inflator.TypeInstance;
if (DeclaringType.IsGenericOrParentIsGeneric)
inflated.state |= StateFlags.PendingMetaInflate;
#if DEBUG
inflated.ID += 1000000;
#endif
return inflated;
}
public override MemberSpec InflateMember (TypeParameterInflator inflator)
{
var fs = (FieldSpec) base.InflateMember (inflator);
fs.memberType = inflator.Inflate (memberType);
return fs;
}
public TypeParameterInflator (TypeParameterInflator nested, TypeSpec type)
: this (type, nested.tparams, nested.targs)
{
}
public override MemberSpec InflateMember (TypeParameterInflator inflator)
{
var spec = (IndexerSpec) base.InflateMember (inflator);
spec.parameters = parameters.Inflate (inflator);
return spec;
}
public override MemberSpec InflateMember (TypeParameterInflator inflator)
{
var ms = (MethodSpec) base.InflateMember (inflator);
ms.inflatedMetaInfo = null;
ms.returnType = inflator.Inflate (returnType);
ms.parameters = parameters.Inflate (inflator);
if (IsGeneric)
ms.constraints = TypeParameterSpec.InflateConstraints (inflator, Constraints);
return ms;
}
//
// Creates a nested container in this context for all dynamic compiler generated stuff
//
internal DynamicSiteClass CreateDynamicSite ()
{
if (dynamic_site_container == null) {
var mc = member_context.CurrentMemberDefinition as MemberBase;
dynamic_site_container = new DynamicSiteClass (CurrentTypeDefinition.Parent.PartialContainer, mc, member_context.CurrentTypeParameters);
CurrentTypeDefinition.Module.AddCompilerGeneratedClass (dynamic_site_container);
dynamic_site_container.CreateContainer ();
dynamic_site_container.DefineContainer ();
dynamic_site_container.Define ();
var inflator = new TypeParameterInflator (Module, CurrentType, TypeParameterSpec.EmptyTypes, TypeSpec.EmptyTypes);
var inflated = dynamic_site_container.CurrentType.InflateMember (inflator);
CurrentType.MemberCache.AddMember (inflated);
}
return dynamic_site_container;
}
public override MemberSpec InflateMember (TypeParameterInflator inflator)
{
var es = (EventSpec) base.InflateMember (inflator);
es.MemberType = inflator.Inflate (MemberType);
if (backing_field != null)
es.backing_field = (FieldSpec) backing_field.InflateMember (inflator);
return es;
}
protected virtual void DefineTypeParameters ()
{
var tparams = CurrentTypeParameters;
TypeParameterSpec[] base_tparams = null;
TypeParameterSpec[] base_decl_tparams = TypeParameterSpec.EmptyTypes;
TypeSpec[] base_targs = TypeSpec.EmptyTypes;
if (((ModFlags & Modifiers.OVERRIDE) != 0 || IsExplicitImpl)) {
if (base_method != null) {
base_tparams = base_method.GenericDefinition.TypeParameters;
if (base_method.DeclaringType.IsGeneric) {
base_decl_tparams = base_method.DeclaringType.MemberDefinition.TypeParameters;
base_targs = Parent.BaseType.TypeArguments;
}
if (base_method.IsGeneric) {
if (base_decl_tparams.Length != 0) {
base_decl_tparams = base_decl_tparams.Concat (base_tparams).ToArray ();
base_targs = base_targs.Concat (tparams.Select<TypeParameter, TypeSpec> (l => l.Type)).ToArray ();
} else {
base_decl_tparams = base_tparams;
base_targs = tparams.Select (l => l.Type).ToArray ();
}
}
} else if (MethodData.implementing != null) {
base_tparams = MethodData.implementing.GenericDefinition.TypeParameters;
if (MethodData.implementing.DeclaringType.IsGeneric) {
base_decl_tparams = MethodData.implementing.DeclaringType.MemberDefinition.TypeParameters;
foreach (var iface in Parent.CurrentType.Interfaces) {
if (iface == MethodData.implementing.DeclaringType) {
base_targs = iface.TypeArguments;
break;
}
}
}
}
}
for (int i = 0; i < tparams.Length; ++i) {
var tp = tparams[i];
if (!tp.ResolveConstraints (this))
continue;
//
// Copy base constraints for override/explicit methods
//
if (base_tparams != null) {
var base_tparam = base_tparams[i];
tp.Type.SpecialConstraint = base_tparam.SpecialConstraint;
var inflator = new TypeParameterInflator (CurrentType, base_decl_tparams, base_targs);
base_tparam.InflateConstraints (inflator, tp.Type);
} else if (MethodData.implementing != null) {
var base_tp = MethodData.implementing.Constraints[i];
if (!tp.Type.HasSameConstraintsImplementation (base_tp)) {
Report.SymbolRelatedToPreviousError (MethodData.implementing);
Report.Error (425, Location,
"The constraints for type parameter `{0}' of method `{1}' must match the constraints for type parameter `{2}' of interface method `{3}'. Consider using an explicit interface implementation instead",
tp.GetSignatureForError (), GetSignatureForError (), base_tp.GetSignatureForError (), MethodData.implementing.GetSignatureForError ());
}
}
}
}
public override TypeSpec AddDelegate(Delegate d)
{
TypeSpec inflated;
base.AddDelegate (d);
// Inflated type instance has to be updated manually
if (instance_type is InflatedTypeSpec) {
var inflator = new TypeParameterInflator (this, instance_type, TypeParameterSpec.EmptyTypes, TypeSpec.EmptyTypes);
inflated = (TypeSpec) d.CurrentType.InflateMember (inflator);
instance_type.MemberCache.AddMember (inflated);
//inflator = new TypeParameterInflator (d.Parent.CurrentType, TypeParameterSpec.EmptyTypes, TypeSpec.EmptyTypes);
//d.Parent.CurrentType.MemberCache.AddMember (d.CurrentType.InflateMember (inflator));
} else {
inflated = d.CurrentType;
}
return inflated;
}
public override MemberSpec InflateMember (TypeParameterInflator inflator)
{
var tps = (TypeParameterSpec) MemberwiseClone ();
InflateConstraints (inflator, tps);
return tps;
}
protected void EmitCallWithInvoke (EmitContext ec, Expression binder, Arguments arguments, bool isStatement)
{
var module = ec.Module;
var site_container = ec.CreateDynamicSite ();
BlockContext bc = new BlockContext (ec.MemberContext, null, ec.BuiltinTypes.Void);
FieldExpr site_field_expr = null;
StatementExpression s = null;
// create call site
var call_site = binder;
if (call_site != null) {
// resolve call site
call_site = call_site.Resolve(bc);
// create field for call site
var site_type_decl = call_site.Type;
var field = site_container.CreateCallSiteField (new TypeExpression(site_type_decl, loc), loc);
if (field == null) {
throw new InvalidOperationException("Could not create call site field");
}
// ???
bool inflate_using_mvar = context_mvars != null && ec.IsAnonymousStoreyMutateRequired;
// ???
TypeSpec gt;
if (inflate_using_mvar || context_mvars == null) {
gt = site_container.CurrentType;
} else {
gt = site_container.CurrentType.MakeGenericType (module, context_mvars.Types);
}
// When site container already exists the inflated version has to be
// updated manually to contain newly created field
if (gt is InflatedTypeSpec && site_container.AnonymousMethodsCounter > 1) {
var tparams = gt.MemberDefinition.TypeParametersCount > 0 ? gt.MemberDefinition.TypeParameters : TypeParameterSpec.EmptyTypes;
var inflator = new TypeParameterInflator (module, gt, tparams, gt.TypeArguments);
gt.MemberCache.AddMember (field.InflateMember (inflator));
}
site_field_expr = new FieldExpr (MemberCache.GetMember (gt, field), loc);
s = new StatementExpression (new SimpleAssign (site_field_expr, call_site));
}
using (ec.With (BuilderContext.Options.OmitDebugInfo, true)) {
if (s!= null && s.Resolve (bc)) {
Statement init = new If (new Binary (Binary.Operator.Equality, site_field_expr, new NullLiteral (loc)), s, loc);
init.Emit (ec);
}
// remove dynamics from argument list
arguments.CastDynamicArgs(bc);
IDynamicCallSite dynamicCallSite = (IDynamicCallSite)this.binder;
Expression target = dynamicCallSite.InvokeCallSite(bc, site_field_expr, arguments, type, isStatement);
if (target != null)
target = target.Resolve(bc);
if (target != null)
{
var statement = target as ExpressionStatement;
if (isStatement && statement != null)
{
statement.EmitStatement(ec);
}
else
{
if (!isStatement && (target.Type != type)) {
// PlayScript: If doing an invoke, we have to cast the return type to the type expected by the expression..
target = new Cast(new TypeExpression(type, loc), target, loc).Resolve (bc);
}
target.Emit(ec);
}
}
}
}
public void InflateConstraints (TypeParameterInflator inflator, TypeParameterSpec tps)
{
tps.BaseType = inflator.Inflate (BaseType);
if (ifaces != null) {
tps.ifaces = new List<TypeSpec> (ifaces.Count);
for (int i = 0; i < ifaces.Count; ++i)
tps.ifaces.Add (inflator.Inflate (ifaces[i]));
}
if (targs != null) {
tps.targs = new TypeSpec[targs.Length];
for (int i = 0; i < targs.Length; ++i)
tps.targs[i] = inflator.Inflate (targs[i]);
}
}
public static TypeParameterSpec[] InflateConstraints (TypeParameterInflator inflator, TypeParameterSpec[] tparams)
{
TypeParameterSpec[] constraints = null;
for (int i = 0; i < tparams.Length; ++i) {
var tp = tparams[i];
if (tp.HasTypeConstraint || tp.Interfaces != null || tp.TypeArguments != null) {
if (constraints == null) {
constraints = new TypeParameterSpec[tparams.Length];
Array.Copy (tparams, constraints, constraints.Length);
}
constraints[i] = (TypeParameterSpec) constraints[i].InflateMember (inflator);
}
}
if (constraints == null)
constraints = tparams;
return constraints;
}
protected override void InitializeMemberCache (bool onlyTypes)
{
if (cache == null)
cache = new MemberCache (onlyTypes ? open_type.MemberCacheTypes : open_type.MemberCache);
TypeParameterSpec[] tparams_full;
TypeSpec[] targs_full = targs;
if (IsNested) {
//
// Special case is needed when we are inflating an open type (nested type definition)
// on inflated parent. Consider following case
//
// Foo<T>.Bar<U> => Foo<string>.Bar<U>
//
// Any later inflation of Foo<string>.Bar<U> has to also inflate T if used inside Bar<U>
//
List<TypeSpec> merged_targs = null;
List<TypeParameterSpec> merged_tparams = null;
var type = DeclaringType;
do {
if (type.TypeArguments.Length > 0) {
if (merged_targs == null) {
merged_targs = new List<TypeSpec> ();
merged_tparams = new List<TypeParameterSpec> ();
if (targs.Length > 0) {
merged_targs.AddRange (targs);
merged_tparams.AddRange (open_type.MemberDefinition.TypeParameters);
}
}
merged_tparams.AddRange (type.MemberDefinition.TypeParameters);
merged_targs.AddRange (type.TypeArguments);
}
type = type.DeclaringType;
} while (type != null);
if (merged_targs != null) {
// Type arguments are not in the right order but it should not matter in this case
targs_full = merged_targs.ToArray ();
tparams_full = merged_tparams.ToArray ();
} else if (targs.Length == 0) {
tparams_full = TypeParameterSpec.EmptyTypes;
} else {
tparams_full = open_type.MemberDefinition.TypeParameters;
}
} else if (targs.Length == 0) {
tparams_full = TypeParameterSpec.EmptyTypes;
} else {
tparams_full = open_type.MemberDefinition.TypeParameters;
}
var inflator = new TypeParameterInflator (this, tparams_full, targs_full);
//
// Two stage inflate due to possible nested types recursive
// references
//
// class A<T> {
// B b;
// class B {
// T Value;
// }
// }
//
// When resolving type of `b' members of `B' cannot be
// inflated because are not yet available in membercache
//
if ((state & StateFlags.PendingMemberCacheMembers) == 0) {
open_type.MemberCacheTypes.InflateTypes (cache, inflator);
//
// Inflate any implemented interfaces
//
if (open_type.Interfaces != null) {
ifaces = new List<TypeSpec> (open_type.Interfaces.Count);
foreach (var iface in open_type.Interfaces) {
var iface_inflated = inflator.Inflate (iface);
AddInterface (iface_inflated);
}
}
//
// Handles the tricky case of recursive nested base generic type
//
// class A<T> : Base<A<T>.Nested> {
// class Nested {}
// }
//
// When inflating A<T>. base type is not yet known, secondary
// inflation is required (not common case) once base scope
// is known
//
if (open_type.BaseType == null) {
if (IsClass)
state |= StateFlags.PendingBaseTypeInflate;
} else {
BaseType = inflator.Inflate (open_type.BaseType);
}
} else if ((state & StateFlags.PendingBaseTypeInflate) != 0) {
BaseType = inflator.Inflate (open_type.BaseType);
state &= ~StateFlags.PendingBaseTypeInflate;
}
if (onlyTypes) {
state |= StateFlags.PendingMemberCacheMembers;
return;
}
var tc = open_type.MemberDefinition as TypeContainer;
if (tc != null && !tc.HasMembersDefined)
throw new InternalErrorException ("Inflating MemberCache with undefined members");
if ((state & StateFlags.PendingBaseTypeInflate) != 0) {
BaseType = inflator.Inflate (open_type.BaseType);
state &= ~StateFlags.PendingBaseTypeInflate;
}
state &= ~StateFlags.PendingMemberCacheMembers;
open_type.MemberCache.InflateMembers (cache, open_type, inflator);
}
protected void EmitCall (EmitContext ec, Expression binder, Arguments arguments, bool isStatement)
{
//
// This method generates all internal infrastructure for a dynamic call. The
// reason why it's quite complicated is the mixture of dynamic and anonymous
// methods. Dynamic itself requires a temporary class (ContainerX) and anonymous
// methods can generate temporary storey as well (AnonStorey). Handling MVAR
// type parameters rewrite is non-trivial in such case as there are various
// combinations possible therefore the mutator is not straightforward. Secondly
// we need to keep both MVAR(possibly VAR for anon storey) and type VAR to emit
// correct Site field type and its access from EmitContext.
//
int dyn_args_count = arguments == null ? 0 : arguments.Count;
int default_args = isStatement ? 1 : 2;
var module = ec.Module;
bool has_ref_out_argument = false;
var targs = new TypeExpression[dyn_args_count + default_args];
targs[0] = new TypeExpression (module.PredefinedTypes.CallSite.TypeSpec, loc);
TypeExpression[] targs_for_instance = null;
TypeParameterMutator mutator;
var site_container = ec.CreateDynamicSite ();
if (context_mvars != null) {
TypeParameters tparam;
TypeContainer sc = site_container;
do {
tparam = sc.CurrentTypeParameters;
sc = sc.Parent;
} while (tparam == null);
mutator = new TypeParameterMutator (context_mvars, tparam);
if (!ec.IsAnonymousStoreyMutateRequired) {
targs_for_instance = new TypeExpression[targs.Length];
targs_for_instance[0] = targs[0];
}
} else {
mutator = null;
}
for (int i = 0; i < dyn_args_count; ++i) {
Argument a = arguments[i];
if (a.ArgType == Argument.AType.Out || a.ArgType == Argument.AType.Ref)
has_ref_out_argument = true;
var t = a.Type;
// Convert any internal type like dynamic or null to object
if (t.Kind == MemberKind.InternalCompilerType)
t = ec.BuiltinTypes.Object;
if (targs_for_instance != null)
targs_for_instance[i + 1] = new TypeExpression (t, loc);
if (mutator != null)
t = t.Mutate (mutator);
targs[i + 1] = new TypeExpression (t, loc);
}
TypeExpr del_type = null;
TypeExpr del_type_instance_access = null;
if (!has_ref_out_argument) {
string d_name = isStatement ? "Action" : "Func";
TypeSpec te = null;
Namespace type_ns = module.GlobalRootNamespace.GetNamespace ("System", true);
if (type_ns != null) {
te = type_ns.LookupType (module, d_name, dyn_args_count + default_args, LookupMode.Normal, loc);
}
if (te != null) {
if (!isStatement) {
var t = type;
if (t.Kind == MemberKind.InternalCompilerType)
t = ec.BuiltinTypes.Object;
if (targs_for_instance != null)
targs_for_instance[targs_for_instance.Length - 1] = new TypeExpression (t, loc);
if (mutator != null)
t = t.Mutate (mutator);
targs[targs.Length - 1] = new TypeExpression (t, loc);
}
del_type = new GenericTypeExpr (te, new TypeArguments (targs), loc);
if (targs_for_instance != null)
del_type_instance_access = new GenericTypeExpr (te, new TypeArguments (targs_for_instance), loc);
else
del_type_instance_access = del_type;
}
}
//
// Create custom delegate when no appropriate predefined delegate has been found
//
Delegate d;
if (del_type == null) {
TypeSpec rt = isStatement ? ec.BuiltinTypes.Void : type;
Parameter[] p = new Parameter[dyn_args_count + 1];
p[0] = new Parameter (targs[0], "p0", Parameter.Modifier.NONE, null, loc);
var site = ec.CreateDynamicSite ();
int index = site.Containers == null ? 0 : site.Containers.Count;
if (mutator != null)
rt = mutator.Mutate (rt);
for (int i = 1; i < dyn_args_count + 1; ++i) {
p[i] = new Parameter (targs[i], "p" + i.ToString ("X"), arguments[i - 1].Modifier, null, loc);
}
d = new Delegate (site, new TypeExpression (rt, loc),
Modifiers.INTERNAL | Modifiers.COMPILER_GENERATED,
new MemberName ("Container" + index.ToString ("X")),
new ParametersCompiled (p), null);
d.CreateContainer ();
d.DefineContainer ();
d.Define ();
d.PrepareEmit ();
site.AddTypeContainer (d);
//
// Add new container to inflated site container when the
// member cache already exists
//
if (site.CurrentType is InflatedTypeSpec && index > 0)
site.CurrentType.MemberCache.AddMember (d.CurrentType);
del_type = new TypeExpression (d.CurrentType, loc);
if (targs_for_instance != null) {
del_type_instance_access = null;
} else {
del_type_instance_access = del_type;
}
} else {
d = null;
}
var site_type_decl = new GenericTypeExpr (module.PredefinedTypes.CallSiteGeneric.TypeSpec, new TypeArguments (del_type), loc);
var field = site_container.CreateCallSiteField (site_type_decl, loc);
if (field == null)
return;
if (del_type_instance_access == null) {
var dt = d.CurrentType.DeclaringType.MakeGenericType (module, context_mvars.Types);
del_type_instance_access = new TypeExpression (MemberCache.GetMember (dt, d.CurrentType), loc);
}
var instanceAccessExprType = new GenericTypeExpr (module.PredefinedTypes.CallSiteGeneric.TypeSpec,
new TypeArguments (del_type_instance_access), loc);
if (instanceAccessExprType.ResolveAsType (ec.MemberContext) == null)
return;
bool inflate_using_mvar = context_mvars != null && ec.IsAnonymousStoreyMutateRequired;
TypeSpec gt;
if (inflate_using_mvar || context_mvars == null) {
gt = site_container.CurrentType;
} else {
gt = site_container.CurrentType.MakeGenericType (module, context_mvars.Types);
}
// When site container already exists the inflated version has to be
// updated manually to contain newly created field
if (gt is InflatedTypeSpec && site_container.AnonymousMethodsCounter > 1) {
var tparams = gt.MemberDefinition.TypeParametersCount > 0 ? gt.MemberDefinition.TypeParameters : TypeParameterSpec.EmptyTypes;
var inflator = new TypeParameterInflator (module, gt, tparams, gt.TypeArguments);
gt.MemberCache.AddMember (field.InflateMember (inflator));
}
FieldExpr site_field_expr = new FieldExpr (MemberCache.GetMember (gt, field), loc);
BlockContext bc = new BlockContext (ec.MemberContext, null, ec.BuiltinTypes.Void);
Arguments args = new Arguments (1);
args.Add (new Argument (binder));
StatementExpression s = new StatementExpression (new SimpleAssign (site_field_expr, new Invocation (new MemberAccess (instanceAccessExprType, "Create"), args)));
using (ec.With (BuilderContext.Options.OmitDebugInfo, true)) {
var conditionalAccessReceiver = IsConditionalAccessReceiver;
var ca = ec.ConditionalAccess;
if (conditionalAccessReceiver) {
ec.ConditionalAccess = new ConditionalAccessContext (type, ec.DefineLabel ()) {
Statement = isStatement
};
//
// Emit conditional access expressions before dynamic call
// is initialized. It pushes site_field_expr on stack before
// the actual instance argument is emited which would cause
// jump from non-empty stack.
//
EmitConditionalAccess (ec);
}
if (s.Resolve (bc)) {
Statement init = new If (new Binary (Binary.Operator.Equality, site_field_expr, new NullLiteral (loc)), s, loc);
init.Emit (ec);
}
args = new Arguments (1 + dyn_args_count);
args.Add (new Argument (site_field_expr));
if (arguments != null) {
int arg_pos = 1;
foreach (Argument a in arguments) {
if (a is NamedArgument) {
// Name is not valid in this context
args.Add (new Argument (a.Expr, a.ArgType));
} else {
args.Add (a);
}
if (inflate_using_mvar && a.Type != targs[arg_pos].Type)
a.Expr.Type = targs[arg_pos].Type;
++arg_pos;
}
}
var target = new DelegateInvocation (new MemberAccess (site_field_expr, "Target", loc).Resolve (bc), args, false, loc).Resolve (bc);
if (target != null) {
target.Emit (ec);
}
if (conditionalAccessReceiver) {
ec.CloseConditionalAccess (!isStatement && type.IsNullableType ? type : null);
ec.ConditionalAccess = ca;
}
}
}
public FieldSpec CreateCallSiteField(FullNamedExpression type, Location loc)
{
int index = fields == null ? 0 : fields.Count;
Field f = new HoistedField (this, type, Modifiers.PUBLIC | Modifiers.STATIC, "Site" + index.ToString ("X"), null, loc);
f.Define ();
AddField (f);
var fs = f.Spec;
if (mutator != null) {
//
// Inflate the field, no need to keep it in MemberCache as it's accessed only once
//
var inflator = new TypeParameterInflator (this, instance_type, spec.MemberDefinition.TypeParameters, instance_type.TypeArguments);
fs = (FieldSpec) fs.InflateMember (inflator);
}
return fs;
}
public AParametersCollection Inflate (TypeParameterInflator inflator)
{
TypeSpec[] inflated_types = null;
bool default_value = false;
for (int i = 0; i < Count; ++i) {
var inflated_param = inflator.Inflate (types[i]);
if (inflated_types == null) {
if (inflated_param == types[i])
continue;
default_value |= FixedParameters[i] is DefaultValueExpression;
inflated_types = new TypeSpec[types.Length];
Array.Copy (types, inflated_types, types.Length);
}
inflated_types[i] = inflated_param;
}
if (inflated_types == null)
return this;
var clone = (AParametersCollection) MemberwiseClone ();
clone.types = inflated_types;
if (default_value) {
for (int i = 0; i < Count; ++i) {
var dve = clone.FixedParameters[i] as DefaultValueExpression;
if (dve != null) {
throw new NotImplementedException ("net");
// clone.FixedParameters [i].DefaultValue = new DefaultValueExpression ();
}
}
}
return clone;
}
public virtual MemberSpec InflateMember (TypeParameterInflator inflator)
{
var inflated = (MemberSpec) MemberwiseClone ();
inflated.declaringType = inflator.TypeInstance;
inflated.state |= StateFlags.PendingMetaInflate;
#if DEBUG
if (inflated.ID > 0)
inflated.ID = -inflated.ID;
#endif
return inflated;
}
public AParametersCollection Inflate (TypeParameterInflator inflator)
{
TypeSpec[] inflated_types = null;
bool default_value = false;
for (int i = 0; i < Count; ++i) {
var inflated_param = inflator.Inflate (types[i]);
if (inflated_types == null) {
if (inflated_param == types[i])
continue;
default_value |= FixedParameters[i].HasDefaultValue;
inflated_types = new TypeSpec[types.Length];
Array.Copy (types, inflated_types, types.Length);
} else {
if (inflated_param == types[i])
continue;
default_value |= FixedParameters[i].HasDefaultValue;
}
inflated_types[i] = inflated_param;
}
if (inflated_types == null)
return this;
var clone = (AParametersCollection) MemberwiseClone ();
clone.types = inflated_types;
//
// Default expression is original expression from the parameter
// declaration context which can be of nested enum in generic class type.
// In such case we end up with expression type of G<T>.E and e.g. parameter
// type of G<int>.E and conversion would fail without inflate in this
// context.
//
if (default_value) {
clone.parameters = new IParameterData[Count];
for (int i = 0; i < Count; ++i) {
var fp = FixedParameters[i];
clone.FixedParameters[i] = fp;
if (!fp.HasDefaultValue)
continue;
var expr = fp.DefaultValue;
if (inflated_types[i] == expr.Type)
continue;
var c = expr as Constant;
if (c != null) {
//
// It may fail we are inflating before type validation is done
//
c = Constant.ExtractConstantFromValue (inflated_types[i], c.GetValue (), expr.Location);
if (c == null)
expr = new DefaultValueExpression (new TypeExpression (inflated_types[i], expr.Location), expr.Location);
else
expr = c;
} else if (expr is DefaultValueExpression)
expr = new DefaultValueExpression (new TypeExpression (inflated_types[i], expr.Location), expr.Location);
clone.FixedParameters[i] = new ParameterData (fp.Name, fp.ModFlags, expr);
}
}
return clone;
}
public HoistedStoreyClass (TypeContainer parent, MemberName name, TypeParameter[] tparams, Modifiers mod)
: base (parent, name, mod | Modifiers.PRIVATE)
{
if (tparams != null) {
type_params = new TypeParameter[tparams.Length];
var src = new TypeParameterSpec[tparams.Length];
var dst = new TypeParameterSpec[tparams.Length];
for (int i = 0; i < type_params.Length; ++i) {
type_params[i] = tparams[i].CreateHoistedCopy (this, spec);
src[i] = tparams[i].Type;
dst[i] = type_params[i].Type;
}
// A copy is not enough, inflate any type parameter constraints
// using a new type parameters
var inflator = new TypeParameterInflator (this, null, src, dst);
for (int i = 0; i < type_params.Length; ++i) {
src[i].InflateConstraints (inflator, dst[i]);
}
mutator = new TypeParameterMutator (tparams, type_params);
}
}
public override MemberSpec InflateMember (TypeParameterInflator inflator)
{
var ps = (PropertySpec) base.InflateMember (inflator);
ps.memberType = inflator.Inflate (memberType);
return ps;
}
protected virtual void DefineTypeParameters ()
{
var tparams = CurrentTypeParameters;
TypeParameterSpec[] base_tparams = null;
TypeParameterSpec[] base_decl_tparams = TypeParameterSpec.EmptyTypes;
TypeSpec[] base_targs = TypeSpec.EmptyTypes;
if (((ModFlags & Modifiers.OVERRIDE) != 0 || IsExplicitImpl)) {
if (base_method != null) {
base_tparams = base_method.GenericDefinition.TypeParameters;
if (base_method.DeclaringType.IsGeneric) {
base_decl_tparams = base_method.DeclaringType.MemberDefinition.TypeParameters;
base_targs = Parent.BaseType.TypeArguments;
}
if (base_method.IsGeneric) {
if (base_decl_tparams.Length != 0) {
base_decl_tparams = base_decl_tparams.Concat (base_tparams).ToArray ();
base_targs = base_targs.Concat (tparams.Select<TypeParameter, TypeSpec> (l => l.Type)).ToArray ();
} else {
base_decl_tparams = base_tparams;
base_targs = tparams.Select (l => l.Type).ToArray ();
}
}
} else if (MethodData.implementing != null) {
base_tparams = MethodData.implementing.GenericDefinition.TypeParameters;
if (MethodData.implementing.DeclaringType.IsGeneric) {
base_decl_tparams = MethodData.implementing.DeclaringType.MemberDefinition.TypeParameters;
foreach (var iface in Parent.CurrentType.Interfaces) {
if (iface == MethodData.implementing.DeclaringType) {
base_targs = iface.TypeArguments;
break;
}
}
}
}
}
for (int i = 0; i < tparams.Length; ++i) {
var tp = tparams[i];
if (!tp.ResolveConstraints (this))
continue;
//
// Copy base constraints for override/explicit methods
//
if (base_tparams != null) {
var base_tparam = base_tparams[i];
var local_tparam = tp.Type;
local_tparam.SpecialConstraint = base_tparam.SpecialConstraint;
var inflator = new TypeParameterInflator (CurrentType, base_decl_tparams, base_targs);
base_tparam.InflateConstraints (inflator, local_tparam);
//
// Check all type argument constraints for possible collision
// introduced by inflating inherited constraints in this context
//
// Conflict example:
//
// class A<T> { virtual void Foo<U> () where U : class, T {} }
// class B : A<int> { override void Foo<U> {} }
//
var local_tparam_targs = local_tparam.TypeArguments;
if (local_tparam_targs != null) {
for (int ii = 0; ii < local_tparam_targs.Length; ++ii) {
var ta = local_tparam_targs [ii];
if (!ta.IsClass && !ta.IsStruct)
continue;
if (Constraints.CheckConflictingInheritedConstraint (local_tparam, ta, this, Location)) {
local_tparam.ChangeTypeArgumentToBaseType (ii);
}
}
}
continue;
}
if (MethodData.implementing != null) {
var base_tp = MethodData.implementing.Constraints[i];
if (!tp.Type.HasSameConstraintsImplementation (base_tp)) {
Report.SymbolRelatedToPreviousError (MethodData.implementing);
Report.Error (425, Location,
"The constraints for type parameter `{0}' of method `{1}' must match the constraints for type parameter `{2}' of interface method `{3}'. Consider using an explicit interface implementation instead",
tp.GetSignatureForError (), GetSignatureForError (), base_tp.GetSignatureForError (), MethodData.implementing.GetSignatureForError ());
}
}
}
}
protected virtual void DefineTypeParameters ()
{
var tparams = CurrentTypeParameters;
TypeParameterSpec[] base_tparams = null;
TypeParameterSpec[] base_decl_tparams = TypeParameterSpec.EmptyTypes;
TypeSpec[] base_targs = TypeSpec.EmptyTypes;
if (((ModFlags & Modifiers.OVERRIDE) != 0 || IsExplicitImpl)) {
MethodSpec base_override = base_method ?? MethodData.implementing;
if (base_override != null) {
base_tparams = base_override.GenericDefinition.TypeParameters;
if (base_override.DeclaringType.IsGeneric) {
base_decl_tparams = base_override.DeclaringType.MemberDefinition.TypeParameters;
if (base_method != null) {
var base_type_parent = CurrentType;
while (base_type_parent.BaseType != base_override.DeclaringType) {
base_type_parent = base_type_parent.BaseType;
}
base_targs = base_type_parent.BaseType.TypeArguments;
} else {
foreach (var iface in Parent.CurrentType.Interfaces) {
if (iface == base_override.DeclaringType) {
base_targs = iface.TypeArguments;
break;
}
}
}
}
if (base_override.IsGeneric) {
ObsoleteAttribute oa;
foreach (var base_tp in base_tparams) {
oa = base_tp.BaseType.GetAttributeObsolete ();
if (oa != null) {
AttributeTester.Report_ObsoleteMessage (oa, base_tp.BaseType.GetSignatureForError (), Location, Report);
}
if (base_tp.InterfacesDefined != null) {
foreach (var iface in base_tp.InterfacesDefined) {
oa = iface.GetAttributeObsolete ();
if (oa != null) {
AttributeTester.Report_ObsoleteMessage (oa, iface.GetSignatureForError (), Location, Report);
}
}
}
}
if (base_decl_tparams.Length != 0) {
base_decl_tparams = base_decl_tparams.Concat (base_tparams).ToArray ();
base_targs = base_targs.Concat (tparams.Types).ToArray ();
} else {
base_decl_tparams = base_tparams;
base_targs = tparams.Types;
}
}
}
}
for (int i = 0; i < tparams.Count; ++i) {
var tp = tparams[i];
if (!tp.ResolveConstraints (this))
continue;
//
// Copy base constraints for override/explicit methods
//
if (base_tparams != null) {
var base_tparam = base_tparams[i];
var local_tparam = tp.Type;
local_tparam.SpecialConstraint = base_tparam.SpecialConstraint;
var inflator = new TypeParameterInflator (this, CurrentType, base_decl_tparams, base_targs);
base_tparam.InflateConstraints (inflator, local_tparam);
//
// Check all type argument constraints for possible collision or unification
// introduced by inflating inherited constraints in this context
//
// Conflict example:
//
// class A<T> { virtual void Foo<U> () where U : class, T {} }
// class B : A<int> { override void Foo<U> {} }
//
var local_tparam_targs = local_tparam.TypeArguments;
if (local_tparam_targs != null) {
for (int ii = 0; ii < local_tparam_targs.Length; ++ii) {
var ta = local_tparam_targs [ii];
if (!ta.IsClass && !ta.IsStruct)
continue;
TypeSpec[] unique_tparams = null;
for (int iii = ii + 1; iii < local_tparam_targs.Length; ++iii) {
//
// Remove any identical or unified constraint types
//
var tparam_checked = local_tparam_targs[iii];
if (TypeSpecComparer.IsEqual (ta, tparam_checked) || TypeSpec.IsBaseClass (ta, tparam_checked, false)) {
unique_tparams = new TypeSpec[local_tparam_targs.Length - 1];
Array.Copy (local_tparam_targs, 0, unique_tparams, 0, iii);
Array.Copy (local_tparam_targs, iii + 1, unique_tparams, iii, local_tparam_targs.Length - iii - 1);
} else if (!TypeSpec.IsBaseClass (tparam_checked, ta, false)) {
Constraints.Error_ConflictingConstraints (this, local_tparam, ta, tparam_checked, Location);
}
}
if (unique_tparams != null) {
local_tparam_targs = unique_tparams;
local_tparam.TypeArguments = local_tparam_targs;
continue;
}
Constraints.CheckConflictingInheritedConstraint (local_tparam, ta, this, Location);
}
}
}
}
if (base_tparams == null && MethodData != null && MethodData.implementing != null) {
CheckImplementingMethodConstraints (Parent, spec, MethodData.implementing);
}
}
public void AddCapturedThisField (EmitContext ec)
{
TypeExpr type_expr = new TypeExpression (ec.CurrentType, Location);
Field f = AddCompilerGeneratedField ("<>f__this", type_expr);
f.Define ();
hoisted_this = new HoistedThis (this, f);
// Inflated type instance has to be updated manually
if (Instance.Type is InflatedTypeSpec) {
var inflator = new TypeParameterInflator (this, Instance.Type, TypeParameterSpec.EmptyTypes, TypeSpec.EmptyTypes);
Instance.Type.MemberCache.AddMember (f.Spec.InflateMember (inflator));
inflator = new TypeParameterInflator (this, f.Parent.CurrentType, TypeParameterSpec.EmptyTypes, TypeSpec.EmptyTypes);
f.Parent.CurrentType.MemberCache.AddMember (f.Spec.InflateMember (inflator));
}
}
public MethodSpec MakeGenericMethod (IMemberContext context, params TypeSpec[] targs)
{
if (targs == null)
throw new ArgumentNullException ();
// TODO MemberCache
// if (generic_intances != null && generic_intances.TryGetValue (targs, out ginstance))
// return ginstance;
//if (generic_intances == null)
// generic_intances = new Dictionary<TypeSpec[], Method> (TypeSpecArrayComparer.Default);
var inflator = new TypeParameterInflator (context, DeclaringType, GenericDefinition.TypeParameters, targs);
var inflated = (MethodSpec) MemberwiseClone ();
inflated.declaringType = inflator.TypeInstance;
inflated.returnType = inflator.Inflate (returnType);
inflated.parameters = parameters.Inflate (inflator);
inflated.targs = targs;
inflated.constraints = TypeParameterSpec.InflateConstraints (inflator, constraints ?? GenericDefinition.TypeParameters);
inflated.state |= StateFlags.PendingMakeMethod;
// if (inflated.parent == null)
// inflated.parent = parent;
//generic_intances.Add (targs, inflated);
return inflated;
}
public override MemberSpec InflateMember (TypeParameterInflator inflator)
{
var es = (EventSpec) base.InflateMember (inflator);
es.MemberType = inflator.Inflate (MemberType);
return es;
}
public HoistedStoreyClass (TypeDefinition parent, MemberName name, TypeParameters tparams, Modifiers mods, MemberKind kind)
: base (parent, name, mods | Modifiers.PRIVATE, kind)
{
if (tparams != null) {
var type_params = name.TypeParameters;
var src = new TypeParameterSpec[tparams.Count];
var dst = new TypeParameterSpec[tparams.Count];
for (int i = 0; i < tparams.Count; ++i) {
type_params[i] = tparams[i].CreateHoistedCopy (spec);
src[i] = tparams[i].Type;
dst[i] = type_params[i].Type;
}
// A copy is not enough, inflate any type parameter constraints
// using a new type parameters
var inflator = new TypeParameterInflator (this, null, src, dst);
for (int i = 0; i < tparams.Count; ++i) {
src[i].InflateConstraints (inflator, dst[i]);
}
mutator = new TypeParameterMutator (tparams, type_params);
}
}
public override MemberSpec InflateMember(TypeParameterInflator inflator)
{
var tps = (TypeParameterSpec) MemberwiseClone ();
tps.BaseType = inflator.Inflate (BaseType);
if (ifaces != null) {
tps.ifaces = new TypeSpec[ifaces.Count];
for (int i = 0; i < ifaces.Count; ++i)
tps.ifaces[i] = inflator.Inflate (ifaces[i]);
}
if (targs != null) {
tps.targs = new TypeSpec[targs.Length];
for (int i = 0; i < targs.Length; ++i)
tps.targs[i] = inflator.Inflate (targs[i]);
}
return tps;
}