using System;
using System.Collections.Generic;
-using System.Diagnostics;
-using System.Reflection;
-using System.Reflection.Emit;
using System.Text;
using SLE = System.Linq.Expressions;
using System.Linq;
+#if STATIC
+using IKVM.Reflection;
+using IKVM.Reflection.Emit;
+#else
+using System.Reflection;
+using System.Reflection.Emit;
+#endif
+
namespace Mono.CSharp {
/// <remarks>
get { return loc; }
}
- // Not nice but we have broken hierarchy.
- public virtual void CheckMarshalByRefAccess (ResolveContext ec)
- {
- }
-
public virtual string GetSignatureForError ()
{
return type.GetDefinition ().GetSignatureForError ();
return null;
}
- if (!te.CheckAccessLevel (ec)) {
+ if (!te.type.IsAccessible (ec.CurrentType)) {
ec.Compiler.Report.SymbolRelatedToPreviousError (te.Type);
ErrorIsInaccesible (ec, te.Type.GetSignatureForError (), loc);
}
te.loc = loc;
+ var dep = te.type.GetMissingDependencies ();
+ if (dep != null) {
+ ImportedTypeDefinition.Error_MissingDependency (ec.Compiler, dep, loc);
+ }
+
//
// Obsolete checks cannot be done when resolving base context as they
// require type dependecies to be set but we are just resolving them
protected static MethodSpec ConstructorLookup (ResolveContext rc, TypeSpec type, ref Arguments args, Location loc)
{
- var ctors = MemberCache.FindMembers (type, ConstructorInfo.ConstructorName, true);
+ var ctors = MemberCache.FindMembers (type, Constructor.ConstructorName, true);
if (ctors == null) {
rc.Report.SymbolRelatedToPreviousError (type);
if (type.IsStruct) {
if ((arity > 0 || (restrictions & MemberLookupRestrictions.ExactArity) != 0) && member.Arity != arity)
continue;
- if (rc != null && !member.IsAccessible (currentType))
- continue;
+ if (rc != null) {
+ if (!member.IsAccessible (currentType))
+ continue;
+
+ //
+ // With runtime binder we can have a situation where queried type is inaccessible
+ // because it came via dynamic object, the check about inconsisted accessibility
+ // had no effect as the type was unknown during compilation
+ //
+ // class A {
+ // private class N { }
+ //
+ // public dynamic Foo ()
+ // {
+ // return new N ();
+ // }
+ // }
+ //
+ if (rc.Compiler.IsRuntimeBinder && !member.DeclaringType.IsAccessible (currentType))
+ continue;
+ }
if ((restrictions & MemberLookupRestrictions.InvocableOnly) != 0) {
if (member is MethodSpec)
/// Returns an expression that can be used to invoke operator false
/// on the expression if it exists.
/// </summary>
- static public Expression GetOperatorFalse (ResolveContext ec, Expression e, Location loc)
+ protected static Expression GetOperatorFalse (ResolveContext ec, Expression e, Location loc)
{
return GetOperatorTrueOrFalse (ec, e, false, loc);
}
protected static TypeExpr CreateExpressionTypeExpression (ResolveContext ec, Location loc)
{
- TypeExpr texpr = TypeManager.expression_type_expr;
- if (texpr == null) {
- TypeSpec t = TypeManager.CoreLookupType (ec.Compiler, "System.Linq.Expressions", "Expression", MemberKind.Class, true);
- if (t == null)
- return null;
-
- TypeManager.expression_type_expr = texpr = new TypeExpression (t, Location.Null);
- }
+ var t = ec.Module.PredefinedTypes.Expression.Resolve (loc);
+ if (t == null)
+ return null;
- return texpr;
+ return new TypeExpression (t, loc);
}
//
public override SLE.Expression MakeExpression (BuilderContext ctx)
{
+#if STATIC
+ return base.MakeExpression (ctx);
+#else
return ctx.HasSet (BuilderContext.Options.CheckedScope) ?
SLE.Expression.ConvertChecked (child.MakeExpression (ctx), type.GetMetaInfo ()) :
SLE.Expression.Convert (child.MakeExpression (ctx), type.GetMetaInfo ());
+#endif
}
protected override void CloneTo (CloneContext clonectx, Expression t)
return Child.GetValue ();
}
+#if !STATIC
public override object GetTypedValue ()
{
- // FIXME: runtime is not ready to work with just emited enums
- if (!RootContext.StdLib) {
- return Child.GetValue ();
- }
-
-#if MS_COMPATIBLE
- // Small workaround for big problem
+ //
+ // The method can be used in dynamic context only (on closed types)
+ //
// System.Enum.ToObject cannot be called on dynamic types
// EnumBuilder has to be used, but we cannot use EnumBuilder
// because it does not properly support generics
//
- // This works only sometimes
- //
- if (type.MemberDefinition is TypeContainer)
- return Child.GetValue ();
-#endif
-
return System.Enum.ToObject (type.GetMetaInfo (), Child.GetValue ());
}
+#endif
public override string AsString ()
{
public override void EncodeAttributeValue (IMemberContext rc, AttributeEncoder enc, TypeSpec targetType)
{
+ // Only boxing to object type is supported
+ if (targetType != TypeManager.object_type) {
+ base.EncodeAttributeValue (rc, enc, targetType);
+ return;
+ }
+
enc.Encode (child.Type);
child.EncodeAttributeValue (rc, enc, child.Type);
}
return this;
}
- public override Expression DoResolveLValue (ResolveContext ec, Expression right_side)
- {
- if (right_side == EmptyExpression.LValueMemberAccess || right_side == EmptyExpression.LValueMemberOutAccess)
- ec.Report.Error (445, loc, "Cannot modify the result of an unboxing conversion");
- return base.DoResolveLValue (ec, right_side);
- }
-
public override void Emit (EmitContext ec)
{
base.Emit (ec);
}
if (Arity == 0 && Name == "dynamic" && RootContext.Version > LanguageVersion.V_3) {
- if (!ec.Compiler.PredefinedAttributes.Dynamic.IsDefined) {
+ if (!ec.Module.PredefinedAttributes.Dynamic.IsDefined) {
ec.Compiler.Report.Error (1980, Location,
"Dynamic keyword requires `{0}' to be defined. Are you missing System.Core.dll assembly reference?",
- ec.Compiler.PredefinedAttributes.Dynamic.GetSignatureForError ());
+ ec.Module.PredefinedAttributes.Dynamic.GetSignatureForError ());
}
return new DynamicTypeExpr (loc);
TypeSpec member_type = rc.CurrentType;
TypeSpec current_type = member_type;
for (; member_type != null; member_type = member_type.DeclaringType) {
- var me = MemberLookup (errorMode ? null : rc, current_type, member_type, Name, lookup_arity, restrictions, loc) as MemberExpr;
- if (me == null)
+ e = MemberLookup (errorMode ? null : rc, current_type, member_type, Name, lookup_arity, restrictions, loc);
+ if (e == null)
continue;
+ var me = e as MemberExpr;
+ if (me == null) {
+ // The name matches a type, defer to ResolveAsTypeStep
+ if (e is TypeExpr)
+ break;
+
+ continue;
+ }
+
if (errorMode) {
if (variable != null) {
if (me is FieldExpr || me is ConstantExpr || me is EventExpr || me is PropertyExpr) {
ErrorIsInaccesible (rc, me.GetSignatureForError (), loc);
}
} else {
- if (variable != null && (restrictions & MemberLookupRestrictions.InvocableOnly) == 0) {
+ // LAMESPEC: again, ignores InvocableOnly
+ if (variable != null) {
rc.Report.SymbolRelatedToPreviousError (variable.Location, Name);
rc.Report.Error (135, loc, "`{0}' conflicts with a declaration in a child block", Name);
}
//
if ((restrictions & MemberLookupRestrictions.InvocableOnly) == 0 && !variable_found) {
e = ResolveAsTypeStep (rc, lookup_arity == 0 || !errorMode);
- if (e != null)
+ if (e != null) {
+ if (variable != null) {
+ rc.Report.SymbolRelatedToPreviousError (variable.Location, Name);
+ rc.Report.Error (135, loc, "`{0}' conflicts with a declaration in a child block", Name);
+ }
+
return e;
+ }
}
if (errorMode) {
return ResolveAsTypeTerminal (ec, false);
}
- public virtual bool CheckAccessLevel (IMemberContext mc)
- {
- DeclSpace c = mc.CurrentMemberDefinition as DeclSpace;
- if (c == null)
- c = mc.CurrentMemberDefinition.Parent;
-
- return c.CheckAccessLevel (Type);
- }
-
protected abstract TypeExpr DoResolveAsTypeStep (IMemberContext ec);
public override bool Equals (object obj)
// get/set member expressions second call would fail to proxy because left expression
// would be of 'this' and not 'base'
if (rc.CurrentType.IsStruct)
- InstanceExpression = rc.GetThis (loc);
+ InstanceExpression = new This (loc).Resolve (rc);
}
if (targs != null)
UnsafeError (rc, loc);
}
+ var dep = member.GetMissingDependencies ();
+ if (dep != null) {
+ ImportedTypeDefinition.Error_MissingDependency (rc.Compiler, dep, loc);
+ }
+
if (!rc.IsObsolete) {
ObsoleteAttribute oa = member.GetAttributeObsolete ();
if (oa != null)
return left;
}
- public bool ResolveInstanceExpression (ResolveContext rc)
+ public bool ResolveInstanceExpression (ResolveContext rc, Expression rhs)
{
if (IsStatic) {
if (InstanceExpression != null) {
if (InstanceExpression is TypeExpr) {
- ObsoleteAttribute oa = InstanceExpression.Type.GetAttributeObsolete ();
- if (oa != null && !rc.IsObsolete) {
- AttributeTester.Report_ObsoleteMessage (oa, InstanceExpression.GetSignatureForError (), loc, rc.Report);
- }
+ var t = InstanceExpression.Type;
+ do {
+ ObsoleteAttribute oa = t.GetAttributeObsolete ();
+ if (oa != null && !rc.IsObsolete) {
+ AttributeTester.Report_ObsoleteMessage (oa, t.GetSignatureForError (), loc, rc.Report);
+ }
+
+ t = t.DeclaringType;
+ } while (t != null);
} else {
var runtime_expr = InstanceExpression as RuntimeValueExpression;
if (runtime_expr == null || !runtime_expr.IsSuggestionOnly) {
DeclaringType.GetSignatureForError (), rc.CurrentType.GetSignatureForError ());
}
- InstanceExpression = rc.GetThis (loc);
+ InstanceExpression = new This (loc);
+ if (this is FieldExpr && rc.CurrentType.IsStruct) {
+ using (rc.Set (ResolveContext.Options.OmitStructFlowAnalysis)) {
+ InstanceExpression = InstanceExpression.Resolve (rc);
+ }
+ } else {
+ InstanceExpression = InstanceExpression.Resolve (rc);
+ }
+
return false;
}
var me = InstanceExpression as MemberExpr;
if (me != null) {
- me.ResolveInstanceExpression (rc);
+ me.ResolveInstanceExpression (rc, rhs);
var fe = me as FieldExpr;
if (fe != null && fe.IsMarshalByRefAccess ()) {
"Cannot call methods, properties, or indexers on `{0}' because it is a value type member of a marshal-by-reference class",
me.GetSignatureForError ());
}
+
+ return true;
+ }
+
+ //
+ // Run member-access postponed check once we know that
+ // the expression is not field expression which is the only
+ // expression which can use uninitialized this
+ //
+ if (InstanceExpression is This && !(this is FieldExpr) && rc.CurrentType.IsStruct) {
+ ((This)InstanceExpression).CheckStructThisDefiniteAssignment (rc);
+ }
+
+ //
+ // Additional checks for l-value member access
+ //
+ if (rhs != null) {
+ //
+ // TODO: It should be recursive but that would break csc compatibility
+ //
+ if (InstanceExpression is UnboxCast) {
+ rc.Report.Error (445, InstanceExpression.Location, "Cannot modify the result of an unboxing conversion");
+ }
}
return true;
var me = ExtensionExpression as MemberExpr;
if (me != null)
- me.ResolveInstanceExpression (ec);
+ me.ResolveInstanceExpression (ec, null);
InstanceExpression = null;
return this;
{
protected IList<MemberSpec> Methods;
MethodSpec best_candidate;
+ TypeSpec best_candidate_return;
protected TypeArguments type_arguments;
SimpleName simple_name;
}
}
+ public TypeSpec BestCandidateReturnType {
+ get {
+ return best_candidate_return;
+ }
+ }
+
protected override TypeSpec DeclaringType {
get {
return queried_type;
public static MethodGroupExpr CreatePredefined (MethodSpec best, TypeSpec queriedType, Location loc)
{
return new MethodGroupExpr (best, queriedType, loc) {
- best_candidate = best
+ best_candidate = best,
+ best_candidate_return = best.ReturnType
};
}
if (r.BestCandidateNewMethodGroup != null)
return r.BestCandidateNewMethodGroup;
- if (best_candidate.Kind == MemberKind.Method) {
+ if (best_candidate.Kind == MemberKind.Method && (restr & OverloadResolver.Restrictions.ProbingOnly) == 0) {
if (InstanceExpression != null) {
if (best_candidate.IsExtensionMethod && args[0].Expr == InstanceExpression) {
InstanceExpression = null;
}
}
- ResolveInstanceExpression (ec);
+ ResolveInstanceExpression (ec, null);
if (InstanceExpression != null)
CheckProtectedMemberAccess (ec, best_candidate);
}
- best_candidate = CandidateToBaseOverride (ec, best_candidate);
+ var base_override = CandidateToBaseOverride (ec, best_candidate);
+ if (base_override == best_candidate) {
+ best_candidate_return = r.BestCandidateReturnType;
+ } else {
+ best_candidate = base_override;
+ best_candidate_return = best_candidate.ReturnType;
+ }
+
return this;
}
{
public readonly MemberSpec Member;
public readonly bool Expanded;
+ public readonly AParametersCollection Parameters;
- public AmbiguousCandidate (MemberSpec member, bool expanded)
+ public AmbiguousCandidate (MemberSpec member, AParametersCollection parameters, bool expanded)
{
Member = member;
+ Parameters = parameters;
Expanded = expanded;
}
}
IErrorHandler custom_errors;
Restrictions restrictions;
MethodGroupExpr best_candidate_extension_group;
+ TypeSpec best_candidate_return_type;
SessionReportPrinter lambda_conv_msgs;
ReportPrinter prev_recorder;
}
}
+ //
+ // Return type can be different between best candidate and closest override
+ //
+ public TypeSpec BestCandidateReturnType {
+ get {
+ return best_candidate_return_type;
+ }
+ }
+
public IErrorHandler CustomErrors {
get {
return custom_errors;
static int BetterExpressionConversion (ResolveContext ec, Argument a, TypeSpec p, TypeSpec q)
{
TypeSpec argument_type = a.Type;
+
+ //
+ // If argument is an anonymous function
+ //
if (argument_type == InternalType.AnonymousMethod && RootContext.Version > LanguageVersion.ISO_2) {
//
- // Uwrap delegate from Expression<T>
+ // p and q are delegate types or expression tree types
//
- if (p.GetDefinition () == TypeManager.expression_type) {
+ if (p.GetDefinition () == TypeManager.expression_type || q.GetDefinition () == TypeManager.expression_type) {
+ if (q.MemberDefinition != p.MemberDefinition) {
+ return 0;
+ }
+
+ //
+ // Uwrap delegate from Expression<T>
+ //
+ q = TypeManager.GetTypeArguments (q)[0];
p = TypeManager.GetTypeArguments (p)[0];
}
- if (q.GetDefinition () == TypeManager.expression_type) {
- q = TypeManager.GetTypeArguments (q)[0];
+
+ var p_m = Delegate.GetInvokeMethod (ec.Compiler, p);
+ var q_m = Delegate.GetInvokeMethod (ec.Compiler, q);
+
+ //
+ // With identical parameter lists
+ //
+ if (!TypeSpecComparer.Equals (p_m.Parameters.Types,q_m.Parameters.Types))
+ return 0;
+
+ p = p_m.ReturnType;
+ q = q_m.ReturnType;
+
+ //
+ // if p is void returning, and q has a return type Y, then C2 is the better conversion.
+ //
+ if (p == TypeManager.void_type) {
+ return q != TypeManager.void_type ? 2 : 0;
}
- p = Delegate.GetInvokeMethod (ec.Compiler, p).ReturnType;
- q = Delegate.GetInvokeMethod (ec.Compiler, q).ReturnType;
- if (p == TypeManager.void_type && q != TypeManager.void_type)
- return 2;
- if (q == TypeManager.void_type && p != TypeManager.void_type)
- return 1;
+ //
+ // if p has a return type Y, and q is void returning, then C1 is the better conversion.
+ //
+ if (q == TypeManager.void_type) {
+ return p != TypeManager.void_type ? 1: 0;
+ }
} else {
if (argument_type == p)
return 1;
return 1;
}
+ // FIXME: handle lifted operators
+
// TODO: this is expensive
Expression p_tmp = new EmptyExpression (p);
Expression q_tmp = new EmptyExpression (q);
/// false if candidate ain't better
/// true if candidate is better than the current best match
/// </remarks>
- static bool BetterFunction (ResolveContext ec, Arguments args, MemberSpec candidate, bool candidate_params,
- MemberSpec best, bool best_params)
+ static bool BetterFunction (ResolveContext ec, Arguments args, MemberSpec candidate, AParametersCollection cparam, bool candidate_params,
+ MemberSpec best, AParametersCollection bparam, bool best_params)
{
AParametersCollection candidate_pd = ((IParametersMember) candidate).Parameters;
AParametersCollection best_pd = ((IParametersMember) best).Parameters;
bool same = true;
int args_count = args == null ? 0 : args.Count;
int j = 0;
+ Argument a = null;
+ TypeSpec ct, bt;
for (int c_idx = 0, b_idx = 0; j < args_count; ++j, ++c_idx, ++b_idx) {
- Argument a = args[j];
+ a = args[j];
// Default arguments are ignored for better decision
if (a.IsDefaultArgument)
break;
- TypeSpec ct = candidate_pd.Types[c_idx];
- TypeSpec bt = best_pd.Types[b_idx];
+ //
+ // When comparing named argument the parameter type index has to be looked up
+ // in original parameter set (override version for virtual members)
+ //
+ NamedArgument na = a as NamedArgument;
+ if (na != null) {
+ int idx = cparam.GetParameterIndexByName (na.Name);
+ ct = candidate_pd.Types[idx];
+ if (candidate_params && candidate_pd.FixedParameters[idx].ModFlags == Parameter.Modifier.PARAMS)
+ ct = TypeManager.GetElementType (ct);
+
+ idx = bparam.GetParameterIndexByName (na.Name);
+ bt = best_pd.Types[idx];
+ if (best_params && best_pd.FixedParameters[idx].ModFlags == Parameter.Modifier.PARAMS)
+ bt = TypeManager.GetElementType (bt);
+ } else {
+ ct = candidate_pd.Types[c_idx];
+ bt = best_pd.Types[b_idx];
- if (candidate_params && candidate_pd.FixedParameters[c_idx].ModFlags == Parameter.Modifier.PARAMS) {
- ct = TypeManager.GetElementType (ct);
- --c_idx;
- }
+ if (candidate_params && candidate_pd.FixedParameters[c_idx].ModFlags == Parameter.Modifier.PARAMS) {
+ ct = TypeManager.GetElementType (ct);
+ --c_idx;
+ }
- if (best_params && best_pd.FixedParameters[b_idx].ModFlags == Parameter.Modifier.PARAMS) {
- bt = TypeManager.GetElementType (bt);
- --b_idx;
+ if (best_params && best_pd.FixedParameters[b_idx].ModFlags == Parameter.Modifier.PARAMS) {
+ bt = TypeManager.GetElementType (bt);
+ --b_idx;
+ }
}
- if (ct == bt)
+ if (TypeSpecComparer.IsEqual (ct, bt))
continue;
same = false;
// The call Add (3, 4, 5) should be ambiguous. Without this check, the
// first candidate would've chosen as better.
//
- if (!same)
+ if (!same && !a.IsDefaultArgument)
return false;
//
// Prefer non-optional version
//
// LAMESPEC: Specification claims this should be done at last but the opposite is true
+ //
if (candidate_params == best_params && candidate_pd.Count != best_pd.Count) {
if (candidate_pd.Count >= best_pd.Count)
return false;
bool specific_at_least_once = false;
for (j = 0; j < candidate_param_count; ++j) {
- var ct = candidate_def_pd.Types[j];
- var bt = best_def_pd.Types[j];
+ NamedArgument na = args_count == 0 ? null : args [j] as NamedArgument;
+ if (na != null) {
+ ct = candidate_def_pd.Types[cparam.GetParameterIndexByName (na.Name)];
+ bt = best_def_pd.Types[bparam.GetParameterIndexByName (na.Name)];
+ } else {
+ ct = candidate_def_pd.Types[j];
+ bt = best_def_pd.Types[j];
+ }
+
if (ct == bt)
continue;
TypeSpec specific = MoreSpecific (ct, bt);
if (specific_at_least_once)
return true;
- // FIXME: handle lifted operators
- // ...
-
return false;
}
// A return value rates candidate method compatibility,
// 0 = the best, int.MaxValue = the worst
//
- int IsApplicable (ResolveContext ec, ref Arguments arguments, int arg_count, ref MemberSpec candidate, AParametersCollection pd, ref bool params_expanded_form, ref bool dynamicArgument)
+ int IsApplicable (ResolveContext ec, ref Arguments arguments, int arg_count, ref MemberSpec candidate, IParametersMember pm, ref bool params_expanded_form, ref bool dynamicArgument, ref TypeSpec returnType)
{
+ // Parameters of most-derived type used mainly for named and optional parameters
+ var pd = pm.Parameters;
+
+ // Used for params modifier only, that's legacy of C# 1.0 which uses base type for
+ // params modifier instead of most-derived type
+ var cpd = ((IParametersMember) candidate).Parameters;
int param_count = pd.Count;
int optional_count = 0;
int score;
return int.MaxValue - 10000 + args_gap - optional_count;
// Readjust expected number when params used
- if (pd.HasParams) {
+ if (cpd.HasParams) {
optional_count--;
if (arg_count < param_count)
param_count--;
return int.MaxValue - 10000 + args_gap;
}
} else if (arg_count != param_count) {
- if (!pd.HasParams)
+ if (!cpd.HasParams)
return int.MaxValue - 10000 + args_gap;
if (arg_count < param_count - 1)
return int.MaxValue - 10000 + args_gap;
Argument temp;
if (index >= param_count) {
// When using parameters which should not be available to the user
- if ((pd.FixedParameters[index].ModFlags & Parameter.Modifier.PARAMS) == 0)
+ if ((cpd.FixedParameters[index].ModFlags & Parameter.Modifier.PARAMS) == 0)
break;
arguments.Add (null);
//
// 1. Handle generic method using type arguments when specified or type inference
//
+ TypeSpec[] ptypes;
var ms = candidate as MethodSpec;
if (ms != null && ms.IsGeneric) {
// Setup constraint checker for probing only
if (g_args_count != type_arguments.Count)
return int.MaxValue - 20000 + System.Math.Abs (type_arguments.Count - g_args_count);
- candidate = ms = ms.MakeGenericMethod (type_arguments.Arguments);
- pd = ms.Parameters;
+ ms = ms.MakeGenericMethod (type_arguments.Arguments);
} else {
// TODO: It should not be here (we don't know yet whether any argument is lambda) but
// for now it simplifies things. I should probably add a callback to ResolveContext
return ti.InferenceScore - 20000;
if (i_args.Length != 0) {
- candidate = ms = ms.MakeGenericMethod (i_args);
- pd = ms.Parameters;
+ ms = ms.MakeGenericMethod (i_args);
}
cc.IgnoreInferredDynamic = true;
//
// Type arguments constraints have to match for the method to be applicable
//
- if (!cc.CheckAll (ms.GetGenericMethodDefinition (), ms.TypeArguments, ms.Constraints, loc))
+ if (!cc.CheckAll (ms.GetGenericMethodDefinition (), ms.TypeArguments, ms.Constraints, loc)) {
+ candidate = ms;
return int.MaxValue - 25000;
+ }
+ //
+ // We have a generic return type and at same time the method is override which
+ // means we have to also inflate override return type in case the candidate is
+ // best candidate and override return type is different to base return type.
+ //
+ // virtual Foo<T, object> with override Foo<T, dynamic>
+ //
+ if (candidate != pm) {
+ MethodSpec override_ms = (MethodSpec) pm;
+ var inflator = new TypeParameterInflator (ms.DeclaringType, override_ms.GenericDefinition.TypeParameters, ms.TypeArguments);
+ returnType = inflator.Inflate (returnType);
+ } else {
+ returnType = ms.ReturnType;
+ }
+
+ candidate = ms;
+ ptypes = ms.Parameters.Types;
} else {
if (type_arguments != null)
return int.MaxValue - 15000;
+
+ ptypes = cpd.Types;
}
//
//
Parameter.Modifier p_mod = 0;
TypeSpec pt = null;
- TypeSpec[] ptypes = ((IParametersMember) candidate).Parameters.Types;
for (int i = 0; i < arg_count; i++) {
Argument a = arguments[i];
}
if (p_mod != Parameter.Modifier.PARAMS) {
- p_mod = pd.FixedParameters[i].ModFlags;
+ p_mod = (pd.FixedParameters[i].ModFlags & ~Parameter.Modifier.PARAMS) | (cpd.FixedParameters[i].ModFlags & Parameter.Modifier.PARAMS);
pt = ptypes [i];
} else if (!params_expanded_form) {
params_expanded_form = true;
if (score > 0)
score = IsArgumentCompatible (ec, a, Parameter.Modifier.NONE, pt);
- if (score <= 0)
+ if (score == 0) {
+ params_expanded_form = true;
+ } else if (score < 0) {
params_expanded_form = true;
+ dynamicArgument = true;
+ }
}
if (score > 0) {
//
// When params parameter has no argument it will be provided later if the method is the best candidate
//
- if (arg_count + 1 == pd.Count && (pd.FixedParameters [arg_count].ModFlags & Parameter.Modifier.PARAMS) != 0)
+ if (arg_count + 1 == pd.Count && (cpd.FixedParameters [arg_count].ModFlags & Parameter.Modifier.PARAMS) != 0)
params_expanded_form = true;
//
if ((member.Modifiers & Modifiers.OVERRIDE) != 0)
continue;
- if (!member.IsAccessible (current_type) && !error_mode)
- continue;
+ if (!error_mode) {
+ if (!member.IsAccessible (current_type))
+ continue;
+
+ if (rc.Compiler.IsRuntimeBinder && !member.DeclaringType.IsAccessible (current_type))
+ continue;
+ }
IParametersMember pm = member as IParametersMember;
if (pm == null) {
//
bool params_expanded_form = false;
bool dynamic_argument = false;
- int candidate_rate = IsApplicable (rc, ref candidate_args, args_count, ref member, pm.Parameters, ref params_expanded_form, ref dynamic_argument);
+ TypeSpec rt = pm.MemberType;
+ int candidate_rate = IsApplicable (rc, ref candidate_args, args_count, ref member, pm, ref params_expanded_form, ref dynamic_argument, ref rt);
//
// How does it score compare to others
best_candidate_params = params_expanded_form;
best_candidate_dynamic = dynamic_argument;
best_parameter_member = pm;
+ best_candidate_return_type = rt;
} else if (candidate_rate == 0) {
//
// The member look is done per type for most operations but sometimes
continue;
}
- // Is the new candidate better
- if (BetterFunction (rc, candidate_args, member, params_expanded_form, best_candidate, best_candidate_params)) {
+ bool is_better;
+ if (best_candidate.DeclaringType.IsInterface && member.DeclaringType.ImplementsInterface (best_candidate.DeclaringType, false)) {
+ //
+ // We pack all interface members into top level type which makes the overload resolution
+ // more complicated for interfaces. We accomodate for this by removing methods with same
+ // signature when building the cache hence this path should not really be hit often
+ //
+ // Example:
+ // interface IA { void Foo (int arg); }
+ // interface IB : IA { void Foo (params int[] args); }
+ //
+ // IB::Foo is the best overload when calling IB.Foo (1)
+ //
+ is_better = true;
+ if (ambiguous_candidates != null) {
+ foreach (var amb_cand in ambiguous_candidates) {
+ if (member.DeclaringType.ImplementsInterface (best_candidate.DeclaringType, false)) {
+ continue;
+ }
+
+ is_better = false;
+ break;
+ }
+
+ if (is_better)
+ ambiguous_candidates = null;
+ }
+ } else {
+ // Is the new candidate better
+ is_better = BetterFunction (rc, candidate_args, member, pm.Parameters, params_expanded_form, best_candidate, best_parameter_member.Parameters, best_candidate_params);
+ }
+
+ if (is_better) {
best_candidate = member;
best_candidate_args = candidate_args;
best_candidate_params = params_expanded_form;
best_candidate_dynamic = dynamic_argument;
best_parameter_member = pm;
+ best_candidate_return_type = rt;
} else {
// It's not better but any other found later could be but we are not sure yet
if (ambiguous_candidates == null)
ambiguous_candidates = new List<AmbiguousCandidate> ();
- ambiguous_candidates.Add (new AmbiguousCandidate (member, params_expanded_form));
+ ambiguous_candidates.Add (new AmbiguousCandidate (member, pm.Parameters, params_expanded_form));
}
}
for (int ix = 0; ix < ambiguous_candidates.Count; ix++) {
var candidate = ambiguous_candidates [ix];
- if (!BetterFunction (rc, candidate_args, best_candidate, best_candidate_params, candidate.Member, candidate.Expanded)) {
+ if (!BetterFunction (rc, best_candidate_args, best_candidate, best_parameter_member.Parameters, best_candidate_params, candidate.Member, candidate.Parameters, candidate.Expanded)) {
var ambiguous = candidate.Member;
if (custom_errors == null || !custom_errors.AmbiguousCandidates (rc, best_candidate, ambiguous)) {
rc.Report.SymbolRelatedToPreviousError (best_candidate);
if (oa != null && !rc.IsObsolete)
AttributeTester.Report_ObsoleteMessage (oa, best_candidate.GetSignatureForError (), loc, rc.Report);
+ var dep = best_candidate.GetMissingDependencies ();
+ if (dep != null) {
+ ImportedTypeDefinition.Error_MissingDependency (rc.Compiler, dep, loc);
+ }
+
best_candidate.MemberDefinition.SetIsUsed ();
args = best_candidate_args;
// For candidates which match on parameters count report more details about incorrect arguments
//
if (pm != null) {
- int unexpanded_count = pm.Parameters.HasParams ? pm.Parameters.Count - 1 : pm.Parameters.Count;
+ int unexpanded_count = ((IParametersMember) best_candidate).Parameters.HasParams ? pm.Parameters.Count - 1 : pm.Parameters.Count;
if (pm.Parameters.Count == arg_count || params_expanded || unexpanded_count == arg_count) {
// Reject any inaccessible member
- if (!best_candidate.IsAccessible (rc.CurrentType)) {
+ if (!best_candidate.IsAccessible (rc.CurrentType) || !best_candidate.DeclaringType.IsAccessible (rc.CurrentType)) {
rc.Report.SymbolRelatedToPreviousError (best_candidate);
Expression.ErrorIsInaccesible (rc, best_candidate.GetSignatureForError (), loc);
return;
protected override Expression DoResolve (ResolveContext rc)
{
- ResolveInstanceExpression (rc);
+ ResolveInstanceExpression (rc, null);
DoBestMemberChecks (rc, constant);
var c = constant.GetConstant (rc);
{
}
-#region Properties
+ #region Properties
public override string Name {
get {
protected override Expression DoResolve (ResolveContext ec)
{
- return DoResolve (ec, false, false);
+ return DoResolve (ec, null);
}
- Expression DoResolve (ResolveContext ec, bool lvalue_instance, bool out_access)
+ Expression DoResolve (ResolveContext ec, Expression rhs)
{
- if (ResolveInstanceExpression (ec)) {
+ bool lvalue_instance = rhs != null && IsInstance && spec.DeclaringType.IsStruct;
+
+ if (ResolveInstanceExpression (ec, rhs)) {
// Resolve the field's instance expression while flow analysis is turned
// off: when accessing a field "a.b", we must check whether the field
// "a.b" is initialized, not whether the whole struct "a" is initialized.
if (lvalue_instance) {
using (ec.With (ResolveContext.Options.DoFlowAnalysis, false)) {
+ bool out_access = rhs == EmptyExpression.OutAccess.Instance || rhs == EmptyExpression.LValueMemberOutAccess;
+
Expression right_side =
out_access ? EmptyExpression.LValueMemberOutAccess : EmptyExpression.LValueMemberAccess;
if (InstanceExpression == null)
return null;
-
- using (ec.Set (ResolveContext.Options.OmitStructFlowAnalysis)) {
- InstanceExpression.CheckMarshalByRefAccess (ec);
- }
}
DoBestMemberChecks (ec, spec);
override public Expression DoResolveLValue (ResolveContext ec, Expression right_side)
{
- bool lvalue_instance = IsInstance && spec.DeclaringType.IsStruct;
- bool out_access = right_side == EmptyExpression.OutAccess.Instance || right_side == EmptyExpression.LValueMemberOutAccess;
-
- Expression e = DoResolve (ec, lvalue_instance, out_access);
+ Expression e = DoResolve (ec, right_side);
if (e == null)
return null;
public override SLE.Expression MakeExpression (BuilderContext ctx)
{
+#if STATIC
+ return base.MakeExpression (ctx);
+#else
return SLE.Expression.Field (
IsStatic ? null : InstanceExpression.MakeExpression (ctx),
spec.GetMetaInfo ());
+#endif
}
public override void SetTypeArguments (ResolveContext ec, TypeArguments ta)
public override SLE.Expression MakeAssignExpression (BuilderContext ctx, Expression source)
{
+#if STATIC
+ return base.MakeExpression (ctx);
+#else
return SLE.Expression.Property (InstanceExpression.MakeExpression (ctx), (MethodInfo) Setter.GetMetaInfo ());
+#endif
}
public override SLE.Expression MakeExpression (BuilderContext ctx)
{
+#if STATIC
+ return base.MakeExpression (ctx);
+#else
return SLE.Expression.Property (InstanceExpression.MakeExpression (ctx), (MethodInfo) Getter.GetMetaInfo ());
+#endif
}
void Error_PropertyNotValid (ResolveContext ec)
Error_PropertyNotValid (rc);
}
- if (ResolveInstanceExpression (rc)) {
- if (right_side != null && best_candidate.DeclaringType.IsStruct)
- InstanceExpression.DoResolveLValue (rc, EmptyExpression.LValueMemberAccess);
+ ResolveInstanceExpression (rc, right_side);
+
+ if ((best_candidate.Modifiers & (Modifiers.ABSTRACT | Modifiers.VIRTUAL)) != 0 && best_candidate.DeclaringType != InstanceExpression.Type) {
+ var filter = new MemberFilter (best_candidate.Name, 0, MemberKind.Property, null, null);
+ var p = MemberCache.FindMember (InstanceExpression.Type, filter, BindingRestriction.InstanceOnly | BindingRestriction.OverrideOnly) as PropertySpec;
+ if (p != null) {
+ type = p.MemberType;
+ }
}
DoBestMemberChecks (rc, best_candidate);
if (expr == null)
return null;
- if (InstanceExpression != null)
- InstanceExpression.CheckMarshalByRefAccess (ec);
-
if (expr != this)
return expr.Resolve (ec);
}
//
if (!ec.HasSet (ResolveContext.Options.CompoundAssignmentScope)) {
if (spec.BackingField != null &&
- (spec.DeclaringType == ec.CurrentType || TypeManager.IsNestedChildOf (ec.CurrentType, spec.DeclaringType))) {
+ (spec.DeclaringType == ec.CurrentType || TypeManager.IsNestedChildOf (ec.CurrentType, spec.DeclaringType.MemberDefinition))) {
spec.MemberDefinition.SetIsUsed ();
return ml.ResolveMemberAccess (ec, left, original);
}
-
- Error_AssignmentEventOnly (ec);
}
return base.ResolveMemberAccess (ec, left, original);
eclass = ExprClass.EventAccess;
type = spec.MemberType;
- ResolveInstanceExpression (ec);
+ ResolveInstanceExpression (ec, null);
if (!ec.HasSet (ResolveContext.Options.CompoundAssignmentScope)) {
- Error_CannotAssign (ec);
+ Error_AssignmentEventOnly (ec);
}
DoBestMemberChecks (ec, spec);
void Error_AssignmentEventOnly (ResolveContext ec)
{
- ec.Report.Error (79, loc, "The event `{0}' can only appear on the left hand side of `+=' or `-=' operator",
- GetSignatureForError ());
- }
-
- public void Error_CannotAssign (ResolveContext ec)
- {
- ec.Report.Error (70, loc,
- "The event `{0}' can only appear on the left hand side of += or -= when used outside of the type `{1}'",
- GetSignatureForError (), TypeManager.CSharpName (spec.DeclaringType));
+ if (spec.DeclaringType == ec.CurrentType || TypeManager.IsNestedChildOf (ec.CurrentType, spec.DeclaringType.MemberDefinition)) {
+ ec.Report.Error (79, loc,
+ "The event `{0}' can only appear on the left hand side of `+=' or `-=' operator",
+ GetSignatureForError ());
+ } else {
+ ec.Report.Error (70, loc,
+ "The event `{0}' can only appear on the left hand side of += or -= when used outside of the type `{1}'",
+ GetSignatureForError (), spec.DeclaringType.GetSignatureForError ());
+ }
}
protected override void Error_CannotCallAbstractBase (ResolveContext rc, string name)
this.loc = loc;
}
+ public override bool IsLockedByStatement {
+ get {
+ return false;
+ }
+ set {
+ }
+ }
+
public LocalVariable LocalInfo {
get {
return li;
projects / mono.git / blobdiff