// Disable control flow analysis while resolving the expression.
// This is used when resolving the instance expression of a field expression.
- DisableFlowAnalysis = 16
+ DisableFlowAnalysis = 16,
+
+ // Set if this is resolving the first part of a MemberAccess.
+ Intermediate = 32
}
//
void AddressOf (EmitContext ec, AddressOp mode);
}
+ /// <summary>
+ /// We are either a namespace or a type.
+ /// If we're a type, `IsType' is true and we may use `Type' to get
+ /// a TypeExpr representing that type.
+ /// </summary>
+ public interface IAlias {
+ bool IsType {
+ get;
+ }
+
+ string Name {
+ get;
+ }
+
+ TypeExpr Type {
+ get;
+ }
+ }
+
/// <summary>
/// This interface is implemented by variables
/// </summary>
Warning (warning, s);
}
+ /// <summary>
+ /// Tests presence of ObsoleteAttribute and report proper error
+ /// </summary>
+ protected void CheckObsoleteAttribute (Type type)
+ {
+ ObsoleteAttribute obsolete_attr = AttributeTester.GetObsoleteAttribute (type);
+ if (obsolete_attr == null)
+ return;
+
+ AttributeTester.Report_ObsoleteMessage (obsolete_attr, type.FullName, loc);
+ }
+
/// <summary>
/// Performs semantic analysis on the Expression
/// </summary>
// value will be returned if the expression is not a type
// reference
//
- public Expression ResolveAsTypeTerminal (EmitContext ec)
+ public TypeExpr ResolveAsTypeTerminal (EmitContext ec)
{
- Expression e = ResolveAsTypeStep (ec);
-
- if (e == null)
- return null;
- if (e is SimpleName)
- return null;
- return e;
+ return ResolveAsTypeStep (ec) as TypeExpr;
}
/// <summary>
ec.DoFlowAnalysis = false;
Expression e;
+ bool intermediate = (flags & ResolveFlags.Intermediate) == ResolveFlags.Intermediate;
if (this is SimpleName)
- e = ((SimpleName) this).DoResolveAllowStatic (ec);
+ e = ((SimpleName) this).DoResolveAllowStatic (ec, intermediate);
+
else
e = DoResolve (ec);
break;
case ExprClass.MethodGroup:
+ if (!RootContext.V2){
if ((flags & ResolveFlags.MethodGroup) == 0) {
((MethodGroupExpr) e).ReportUsageError ();
return null;
}
+ }
break;
case ExprClass.Value:
return null;
}
- if (e.type == null)
+ if ((e.type == null) && !(e is ConstructedType))
throw new Exception ("Expression " + e +
" did not set its type after Resolve");
}
/// </remarks>
public abstract void Emit (EmitContext ec);
+ public virtual void EmitBranchable (EmitContext ec, Label target, bool onTrue)
+ {
+ Emit (ec);
+ ec.ig.Emit (onTrue ? OpCodes.Brtrue : OpCodes.Brfalse, target);
+ }
+
/// <summary>
/// Protected constructor. Only derivate types should
/// be able to be created
else if (t == TypeManager.bool_type)
return new BoolConstant ((bool) v);
else if (TypeManager.IsEnumType (t)){
- Constant e = Constantify (v, TypeManager.TypeToCoreType (v.GetType ()));
+ Type real_type = TypeManager.TypeToCoreType (v.GetType ());
+ if (real_type == t)
+ real_type = real_type.UnderlyingSystemType;
+
+ Constant e = Constantify (v, real_type);
return new EnumConstant (e, t);
} else
else if (mi is PropertyInfo)
return new PropertyExpr (ec, (PropertyInfo) mi, loc);
else if (mi is Type){
- return new TypeExpr ((System.Type) mi, loc);
+ return new TypeExpression ((System.Type) mi, loc);
}
return null;
}
+
+ private static ArrayList almostMatchedMembers = new ArrayList (4);
+
//
// FIXME: Probably implement a cache for (t,name,current_access_set)?
//
string name, MemberTypes mt,
BindingFlags bf, Location loc)
{
- MemberInfo [] mi = TypeManager.MemberLookup (container_type, qualifier_type,
- queried_type, mt, bf, name);
+ almostMatchedMembers.Clear ();
+
+ MemberInfo [] mi = TypeManager.MemberLookup (
+ container_type, qualifier_type,queried_type, mt, bf, name,
+ almostMatchedMembers);
if (mi == null)
return null;
/// find it.
/// </summary>
public static Expression MemberLookupFinal (EmitContext ec, Type qualifier_type,
- Type queried_type, string name, Location loc)
+ Type queried_type, string name,
+ Location loc)
{
return MemberLookupFinal (ec, qualifier_type, queried_type, name,
AllMemberTypes, AllBindingFlags, loc);
e = MemberLookup (ec, ec.ContainerType, qualifier_type, queried_type,
name, mt, bf, loc);
- if (e != null)
- return e;
+ if (e == null && errors == Report.Errors)
+ // No errors were reported by MemberLookup, but there was an error.
+ MemberLookupFailed (ec, qualifier_type, queried_type, name,
+ null, loc);
- // Error has already been reported.
- if (errors < Report.Errors)
- return null;
-
- MemberLookupFailed (ec, qualifier_type, queried_type, name, null, loc);
- return null;
+ return e;
}
public static void MemberLookupFailed (EmitContext ec, Type qualifier_type,
Type queried_type, string name,
string class_name, Location loc)
{
- object lookup = TypeManager.MemberLookup (queried_type, null, queried_type,
- AllMemberTypes, AllBindingFlags |
- BindingFlags.NonPublic, name);
+ if (almostMatchedMembers.Count != 0) {
+ if (qualifier_type == null) {
+ foreach (MemberInfo m in almostMatchedMembers)
+ Report.Error (38, loc,
+ "Cannot access non-static member `{0}' via nested type `{1}'",
+ TypeManager.GetFullNameSignature (m),
+ TypeManager.CSharpName (ec.ContainerType));
+ return;
+ }
+
- if (lookup == null) {
+ if (qualifier_type != ec.ContainerType) {
+ // Although a derived class can access protected members of
+ // its base class it cannot do so through an instance of the
+ // base class (CS1540). If the qualifier_type is a parent of the
+ // ec.ContainerType and the lookup succeeds with the latter one,
+ // then we are in this situation.
+ foreach (MemberInfo m in almostMatchedMembers)
+ Report.Error (1540, loc,
+ "Cannot access protected member `{0}' via a qualifier of type `{1}';"
+ + " the qualifier must be of type `{2}' (or derived from it)",
+ TypeManager.GetFullNameSignature (m),
+ TypeManager.CSharpName (qualifier_type),
+ TypeManager.CSharpName (ec.ContainerType));
+ return;
+ }
+ almostMatchedMembers.Clear ();
+ }
+
+ MemberInfo[] mi = TypeManager.MemberLookup (queried_type, null, queried_type,
+ AllMemberTypes, AllBindingFlags |
+ BindingFlags.NonPublic, name, null);
+
+ if (mi == null) {
if (class_name != null)
Report.Error (103, loc, "The name `" + name + "' could not be " +
"found in `" + class_name + "'");
return;
}
- if ((qualifier_type != null) && (qualifier_type != ec.ContainerType) &&
- ec.ContainerType.IsSubclassOf (qualifier_type)) {
- // Although a derived class can access protected members of
- // its base class it cannot do so through an instance of the
- // base class (CS1540). If the qualifier_type is a parent of the
- // ec.ContainerType and the lookup succeeds with the latter one,
- // then we are in this situation.
-
- lookup = TypeManager.MemberLookup (
- ec.ContainerType, ec.ContainerType, ec.ContainerType,
- AllMemberTypes, AllBindingFlags, name);
+ if (TypeManager.MemberLookup (queried_type, null, queried_type,
+ AllMemberTypes, AllBindingFlags |
+ BindingFlags.NonPublic, name, null) == null) {
+ if ((mi.Length == 1) && (mi [0] is Type)) {
+ Type t = (Type) mi [0];
- if (lookup != null) {
- Report.Error (
- 1540, loc, "Cannot access protected member `" +
- TypeManager.CSharpName (qualifier_type) + "." +
- name + "' " + "via a qualifier of type `" +
- TypeManager.CSharpName (qualifier_type) + "'; the " +
- "qualifier must be of type `" +
- TypeManager.CSharpName (ec.ContainerType) + "' " +
- "(or derived from it)");
+ Report.Error (305, loc,
+ "Using the generic type `{0}' " +
+ "requires {1} type arguments",
+ TypeManager.GetFullName (t),
+ TypeManager.GetNumberOfTypeArguments (t));
return;
}
}
+
+
if (qualifier_type != null)
- Report.Error (
- 122, loc, "`" + TypeManager.CSharpName (qualifier_type) + "." +
- name + "' is inaccessible due to its protection level");
- else
- Report.Error (
- 122, loc, "`" + name + "' is inaccessible due to its " +
- "protection level");
+ Report.Error_T (122, loc, TypeManager.CSharpName (qualifier_type) + "." + name);
+ else if (name == ".ctor") {
+ Report.Error (143, loc, String.Format ("The type {0} has no constructors defined",
+ TypeManager.CSharpName (queried_type)));
+ } else {
+ Report.Error_T (122, loc, name);
+ }
}
static public MemberInfo GetFieldFromEvent (EventExpr event_expr)
ArrayList arguments = new ArrayList ();
arguments.Add (new Argument (e, Argument.AType.Expression));
- method = Invocation.OverloadResolve (ec, (MethodGroupExpr) operator_group, arguments, loc);
+ method = Invocation.OverloadResolve (
+ ec, (MethodGroupExpr) operator_group, arguments, false, loc);
if (method == null)
return null;
"a `" + sb.ToString () + "' was expected");
}
- static void Error_ConstantValueCannotBeConverted (Location l, string val, Type t)
+ static public void Error_ConstantValueCannotBeConverted (Location l, string val, Type t)
{
Report.Error (31, l, "Constant value `" + val + "' cannot be converted to " +
TypeManager.CSharpName (t));
return 0;
}
- //
- // Default implementation of IAssignMethod.CacheTemporaries
- //
- public void CacheTemporaries (EmitContext ec)
- {
- }
-
static void Error_NegativeArrayIndex (Location loc)
{
Report.Error (284, loc, "Can not create array with a negative size");
public class EmptyCast : Expression {
protected Expression child;
+ public Expression Child {
+ get {
+ return child;
+ }
+ }
+
public EmptyCast (Expression child, Type return_type)
{
eclass = child.eclass;
{
return Child.ConvertToInt ();
}
+
+ public override bool IsZeroInteger {
+ get { return Child.IsZeroInteger; }
+ }
}
/// <summary>
public BoxedCast (Expression expr)
: base (expr, TypeManager.object_type)
{
+ eclass = ExprClass.Value;
}
public BoxedCast (Expression expr, Type target_type)
: base (expr, target_type)
{
+ eclass = ExprClass.Value;
}
public override Expression DoResolve (EmitContext ec)
ILGenerator ig = ec.ig;
base.Emit (ec);
- ig.Emit (OpCodes.Unbox, t);
+ if (t.IsGenericParameter)
+ ig.Emit (OpCodes.Unbox_Any, t);
+ else {
+ ig.Emit (OpCodes.Unbox, t);
- LoadFromPtr (ig, t);
+ LoadFromPtr (ig, t);
+ }
}
}
{
base.Emit (ec);
- ec.ig.Emit (OpCodes.Castclass, type);
- }
-
+ if (child.Type.IsGenericParameter)
+ ec.ig.Emit (OpCodes.Box, child.Type);
+
+ if (type.IsGenericParameter)
+ ec.ig.Emit (OpCodes.Unbox_Any, type);
+ else
+ ec.ig.Emit (OpCodes.Castclass, type);
+ }
}
/// <summary>
/// </remarks>
public class SimpleName : Expression {
public string Name;
+ public readonly TypeArguments Arguments;
//
// If true, then we are a simple name, not composed with a ".
is_base = true;
}
+ public SimpleName (string name, TypeArguments args, Location l)
+ {
+ Name = name;
+ Arguments = args;
+ loc = l;
+ is_base = true;
+ }
+
public static void Error_ObjectRefRequired (EmitContext ec, Location l, string name)
{
if (ec.IsFieldInitializer)
public override Expression DoResolve (EmitContext ec)
{
- return SimpleNameResolve (ec, null, false);
+ return SimpleNameResolve (ec, null, false, false);
}
public override Expression DoResolveLValue (EmitContext ec, Expression right_side)
{
- return SimpleNameResolve (ec, right_side, false);
+ return SimpleNameResolve (ec, right_side, false, false);
}
- public Expression DoResolveAllowStatic (EmitContext ec)
+ public Expression DoResolveAllowStatic (EmitContext ec, bool intermediate)
{
- return SimpleNameResolve (ec, null, true);
+ return SimpleNameResolve (ec, null, true, intermediate);
}
public override Expression ResolveAsTypeStep (EmitContext ec)
{
DeclSpace ds = ec.DeclSpace;
NamespaceEntry ns = ds.NamespaceEntry;
- Type t;
- string alias_value;
+ TypeExpr t;
+ IAlias alias_value;
//
// Since we are cheating: we only do the Alias lookup for
else
alias_value = null;
- if (ec.ResolvingTypeTree){
- if (alias_value != null){
- if ((t = RootContext.LookupType (ds, alias_value, true, loc)) != null)
- return new TypeExpr (t, loc);
- }
+ TypeParameterExpr generic_type = ds.LookupGeneric (Name, loc);
+ if (generic_type != null)
+ return generic_type.ResolveAsTypeTerminal (ec);
+ if (ec.ResolvingTypeTree){
int errors = Report.Errors;
- Type dt = ec.DeclSpace.FindType (loc, Name);
+ Type dt = ds.FindType (loc, Name);
if (Report.Errors != errors)
return null;
if (dt != null)
- return new TypeExpr (dt, loc);
+ return new TypeExpression (dt, loc);
+
+ if (alias_value != null){
+ if (alias_value.IsType)
+ return alias_value.Type;
+ if ((t = RootContext.LookupType (ds, alias_value.Name, true, loc)) != null)
+ return t;
+ }
}
//
// First, the using aliases
//
if (alias_value != null){
- if ((t = RootContext.LookupType (ds, alias_value, true, loc)) != null)
- return new TypeExpr (t, loc);
+ if (alias_value.IsType)
+ return alias_value.Type;
+ if ((t = RootContext.LookupType (ds, alias_value.Name, true, loc)) != null)
+ return t;
// we have alias value, but it isn't Type, so try if it's namespace
- return new SimpleName (alias_value, loc);
+ return new SimpleName (alias_value.Name, loc);
}
- if (ec.IsGeneric){
- TypeParameterExpr generic_type = ds.LookupGeneric (Name, loc);
-
- if (generic_type != null)
- return generic_type.ResolveAsTypeTerminal (ec);
- }
-
//
// Stage 2: Lookup up if we are an alias to a type
// or a namespace.
//
if ((t = RootContext.LookupType (ds, Name, true, loc)) != null)
- return new TypeExpr (t, loc);
+ return t;
// No match, maybe our parent can compose us
// into something meaningful.
return this;
}
+ Expression SimpleNameResolve (EmitContext ec, Expression right_side,
+ bool allow_static, bool intermediate)
+ {
+ Expression e = DoSimpleNameResolve (ec, right_side, allow_static, intermediate);
+ if (e == null)
+ return null;
+
+ Block current_block = ec.CurrentBlock;
+ if (current_block != null){
+ LocalInfo vi = current_block.GetLocalInfo (Name);
+ if (is_base &&
+ current_block.IsVariableNameUsedInChildBlock(Name)) {
+ Report.Error (135, Location,
+ "'{0}' has a different meaning in a " +
+ "child block", Name);
+ return null;
+ }
+ }
+
+ if (e.Type != null && e.Type.IsPointer && !ec.InUnsafe) {
+ UnsafeError (loc);
+ return null;
+ }
+
+ return e;
+ }
+
/// <remarks>
/// 7.5.2: Simple Names.
///
/// Type is both an instance variable and a Type; Type.GetType
/// is the static method not an instance method of type.
/// </remarks>
- Expression SimpleNameResolve (EmitContext ec, Expression right_side, bool allow_static)
+ Expression DoSimpleNameResolve (EmitContext ec, Expression right_side, bool allow_static, bool intermediate)
{
Expression e = null;
//
NamespaceEntry ns = ec.DeclSpace.NamespaceEntry;
if (is_base && ns != null){
- string alias_value = ns.LookupAlias (Name);
+ IAlias alias_value = ns.LookupAlias (Name);
if (alias_value != null){
- Name = alias_value;
+ if (alias_value.IsType)
+ return alias_value.Type;
+
+ Name = alias_value.Name;
Type t;
if ((t = TypeManager.LookupType (Name)) != null)
- return new TypeExpr (t, loc);
+ return new TypeExpression (t, loc);
// No match, maybe our parent can compose us
// into something meaningful.
if (me == null)
return e;
+ if (Arguments != null) {
+ MethodGroupExpr mg = me as MethodGroupExpr;
+ if (mg == null)
+ return null;
+
+ return mg.ResolveGeneric (ec, Arguments);
+ }
+
// This fails if ResolveMemberAccess() was unable to decide whether
// it's a field or a type of the same name.
+
if (!me.IsStatic && (me.InstanceExpression == null))
return e;
if (!me.IsStatic &&
- TypeManager.IsNestedChildOf (me.InstanceExpression.Type, me.DeclaringType) &&
- !me.InstanceExpression.Type.IsSubclassOf (me.DeclaringType)) {
+ TypeManager.IsSubclassOrNestedChildOf (me.InstanceExpression.Type, me.DeclaringType) &&
+ me.InstanceExpression.Type != me.DeclaringType &&
+ !me.InstanceExpression.Type.IsSubclassOf (me.DeclaringType) &&
+ (!intermediate || !MemberAccess.IdenticalNameAndTypeName (ec, this, e, loc))) {
Error (38, "Cannot access nonstatic member `" + me.Name + "' of " +
"outer type `" + me.DeclaringType + "' via nested type `" +
me.InstanceExpression.Type + "'");
return null;
}
- if (right_side != null)
- e = e.DoResolveLValue (ec, right_side);
- else
- e = e.DoResolve (ec);
-
- return e;
+ return (right_side != null)
+ ? e.DoResolveLValue (ec, right_side)
+ : e.DoResolve (ec);
}
if (ec.IsStatic || ec.IsFieldInitializer){
/// <summary>
/// Fully resolved expression that evaluates to a type
/// </summary>
- public class TypeExpr : Expression {
- public TypeExpr (Type t, Location l)
+ public abstract class TypeExpr : Expression, IAlias {
+ override public Expression ResolveAsTypeStep (EmitContext ec)
{
- Type = t;
+ TypeExpr t = DoResolveAsTypeStep (ec);
+ if (t == null)
+ return null;
+
eclass = ExprClass.Type;
- loc = l;
+ return t;
}
- public virtual string Name {
- get { return Type.Name; }
+ override public Expression DoResolve (EmitContext ec)
+ {
+ return ResolveAsTypeTerminal (ec);
}
- public override Expression ResolveAsTypeStep (EmitContext ec)
+ override public void Emit (EmitContext ec)
{
- return this;
+ throw new Exception ("Should never be called");
}
- override public Expression DoResolve (EmitContext ec)
+ public virtual bool CheckAccessLevel (DeclSpace ds)
{
- return this;
+ return ds.CheckAccessLevel (Type);
}
- override public void Emit (EmitContext ec)
+ public virtual bool AsAccessible (DeclSpace ds, int flags)
{
- throw new Exception ("Should never be called");
+ return ds.AsAccessible (Type, flags);
+ }
+
+ public virtual bool IsClass {
+ get { return Type.IsClass; }
+ }
+
+ public virtual bool IsValueType {
+ get { return Type.IsValueType; }
+ }
+
+ public virtual bool IsInterface {
+ get { return Type.IsInterface; }
+ }
+
+ public virtual bool IsSealed {
+ get { return Type.IsSealed; }
}
+ public virtual bool CanInheritFrom ()
+ {
+ if (Type == TypeManager.enum_type ||
+ (Type == TypeManager.value_type && RootContext.StdLib) ||
+ Type == TypeManager.multicast_delegate_type ||
+ Type == TypeManager.delegate_type ||
+ Type == TypeManager.array_type)
+ return false;
+
+ return true;
+ }
+
+ public virtual bool IsAttribute {
+ get {
+ return Type == TypeManager.attribute_type ||
+ Type.IsSubclassOf (TypeManager.attribute_type);
+ }
+ }
+
+ public abstract TypeExpr DoResolveAsTypeStep (EmitContext ec);
+
+ public virtual Type ResolveType (EmitContext ec)
+ {
+ TypeExpr t = ResolveAsTypeTerminal (ec);
+ if (t == null)
+ return null;
+
+ return t.Type;
+ }
+
+ public abstract string Name {
+ get;
+ }
+
+ public override bool Equals (object obj)
+ {
+ TypeExpr tobj = obj as TypeExpr;
+ if (tobj == null)
+ return false;
+
+ return Type == tobj.Type;
+ }
+
+ public override int GetHashCode ()
+ {
+ return Type.GetHashCode ();
+ }
+
public override string ToString ()
{
- return Type.ToString ();
+ return Name;
+ }
+
+ bool IAlias.IsType {
+ get { return true; }
+ }
+
+ TypeExpr IAlias.Type {
+ get {
+ return this;
+ }
+ }
+ }
+
+ public class TypeExpression : TypeExpr, IAlias {
+ public TypeExpression (Type t, Location l)
+ {
+ Type = t;
+ eclass = ExprClass.Type;
+ loc = l;
+ }
+
+ public override TypeExpr DoResolveAsTypeStep (EmitContext ec)
+ {
+ return this;
+ }
+
+ public override string Name {
+ get {
+ return Type.ToString ();
+ }
+ }
+
+ string IAlias.Name {
+ get {
+ return Type.FullName != null ? Type.FullName : Type.Name;
+ }
}
}
public class TypeLookupExpression : TypeExpr {
string name;
- public TypeLookupExpression (string name) : base (null, Location.Null)
+ public TypeLookupExpression (string name)
{
this.name = name;
}
+ public override TypeExpr DoResolveAsTypeStep (EmitContext ec)
+ {
+ if (type == null) {
+ TypeExpr texpr = RootContext.LookupType (
+ ec.DeclSpace, name, false, Location.Null);
+ if (texpr == null)
+ return null;
+
+ type = texpr.ResolveType (ec);
+ if (type == null)
+ return null;
+ }
+
+ return this;
+ }
+
+ public override string Name {
+ get {
+ return name;
+ }
+ }
+ }
+
+ public class TypeAliasExpression : TypeExpr, IAlias {
+ TypeExpr texpr;
+ TypeArguments args;
+ string name;
+
+ public TypeAliasExpression (TypeExpr texpr, TypeArguments args, Location l)
+ {
+ this.texpr = texpr;
+ this.args = args;
+ loc = texpr.Location;
+
+ eclass = ExprClass.Type;
+ if (args != null)
+ name = texpr.Name + "<" + args.ToString () + ">";
+ else
+ name = texpr.Name;
+ }
+
public override string Name {
get { return name; }
}
- public override Expression ResolveAsTypeStep (EmitContext ec)
+ public override TypeExpr DoResolveAsTypeStep (EmitContext ec)
{
+ Type type = texpr.ResolveType (ec);
if (type == null)
- type = RootContext.LookupType (ec.DeclSpace, name, false, Location.Null);
- return this;
+ return null;
+
+ int num_args = TypeManager.GetNumberOfTypeArguments (type);
+
+ if (args != null) {
+ if (num_args == 0) {
+ Report.Error (308, loc,
+ "The non-generic type `{0}' cannot " +
+ "be used with type arguments.",
+ TypeManager.CSharpName (type));
+ return null;
+ }
+
+ ConstructedType ctype = new ConstructedType (type, args, loc);
+ return ctype.ResolveAsTypeTerminal (ec);
+ } else if (num_args > 0) {
+ Report.Error (305, loc,
+ "Using the generic type `{0}' " +
+ "requires {1} type arguments",
+ TypeManager.GetFullName (type), num_args);
+ return null;
+ }
+
+ return new TypeExpression (type, loc);
}
- public override Expression DoResolve (EmitContext ec)
+ public override Type ResolveType (EmitContext ec)
{
- return ResolveAsTypeStep (ec);
+ TypeExpr t = ResolveAsTypeTerminal (ec);
+ if (t == null)
+ return null;
+
+ type = t.ResolveType (ec);
+ return type;
}
- public override void Emit (EmitContext ec)
+ public override bool CheckAccessLevel (DeclSpace ds)
{
- throw new Exception ("Should never be called");
+ return texpr.CheckAccessLevel (ds);
}
- public override string ToString ()
+ public override bool AsAccessible (DeclSpace ds, int flags)
{
- return name;
+ return texpr.AsAccessible (ds, flags);
+ }
+
+ public override bool IsClass {
+ get { return texpr.IsClass; }
+ }
+
+ public override bool IsValueType {
+ get { return texpr.IsValueType; }
+ }
+
+ public override bool IsInterface {
+ get { return texpr.IsInterface; }
+ }
+
+ public override bool IsSealed {
+ get { return texpr.IsSealed; }
+ }
+
+ public override bool IsAttribute {
+ get { return texpr.IsAttribute; }
}
}
public MethodBase [] Methods;
Expression instance_expression = null;
bool is_explicit_impl = false;
+ bool has_type_arguments = false;
+ bool identical_type_name = false;
public MethodGroupExpr (MemberInfo [] mi, Location l)
{
}
}
+ public bool HasTypeArguments {
+ get {
+ return has_type_arguments;
+ }
+
+ set {
+ has_type_arguments = value;
+ }
+ }
+
+ public bool IdenticalTypeName {
+ get {
+ return identical_type_name;
+ }
+
+ set {
+ identical_type_name = value;
+ }
+ }
+
public string Name {
get {
//return Methods [0].Name;
{
return RemoveMethods (false);
}
+
+ public Expression ResolveGeneric (EmitContext ec, TypeArguments args)
+ {
+ if (args.Resolve (ec) == false)
+ return null;
+
+ Type[] atypes = args.Arguments;
+
+ int first_count = 0;
+ MethodInfo first = null;
+
+ ArrayList list = new ArrayList ();
+ foreach (MethodBase mb in Methods) {
+ MethodInfo mi = mb as MethodInfo;
+ if ((mi == null) || !mi.HasGenericParameters)
+ continue;
+
+ Type[] gen_params = mi.GetGenericArguments ();
+
+ if (first == null) {
+ first = mi;
+ first_count = gen_params.Length;
+ }
+
+ if (gen_params.Length != atypes.Length)
+ continue;
+
+ list.Add (mi.BindGenericParameters (atypes));
+ }
+
+ if (list.Count > 0) {
+ MethodGroupExpr new_mg = new MethodGroupExpr (list, Location);
+ new_mg.InstanceExpression = InstanceExpression;
+ new_mg.HasTypeArguments = true;
+ return new_mg;
+ }
+
+ if (first != null)
+ Report.Error (
+ 305, loc, "Using the generic method `{0}' " +
+ "requires {1} type arguments", Name,
+ first_count);
+ else
+ Report.Error (
+ 308, loc, "The non-generic method `{0}' " +
+ "cannot be used with type arguments", Name);
+
+ return null;
+ }
}
/// <summary>
Expression instance_expr;
VariableInfo variable_info;
+ LocalTemporary temp;
+ bool prepared;
+
public FieldExpr (FieldInfo fi, Location l)
{
FieldInfo = fi;
eclass = ExprClass.Variable;
- type = fi.FieldType;
+ type = TypeManager.TypeToCoreType (fi.FieldType);
loc = l;
}
return null;
}
+ ObsoleteAttribute oa;
+ FieldBase f = TypeManager.GetField (FieldInfo);
+ if (f != null) {
+ oa = f.GetObsoleteAttribute (ec.DeclSpace);
+ if (oa != null)
+ AttributeTester.Report_ObsoleteMessage (oa, f.GetSignatureForError (), loc);
+ // To be sure that type is external because we do not register generated fields
+ } else if (!(FieldInfo.DeclaringType is TypeBuilder)) {
+ oa = AttributeTester.GetMemberObsoleteAttribute (FieldInfo);
+ if (oa != null)
+ AttributeTester.Report_ObsoleteMessage (oa, TypeManager.GetFullNameSignature (FieldInfo), loc);
+ }
+
// If the instance expression is a local variable or parameter.
IVariable var = instance_expr as IVariable;
if ((var == null) || (var.VariableInfo == null))
FieldBase fb = TypeManager.GetField (FieldInfo);
if (fb != null)
- fb.IsAssigned = true;
+ fb.SetAssigned ();
//
// InitOnly fields can only be assigned in constructors
if (IsStatic && !ec.IsStatic)
Report_AssignToReadonly (false);
- if (ec.ContainerType == FieldInfo.DeclaringType)
+ Type ctype;
+ if (ec.TypeContainer.CurrentType != null)
+ ctype = ec.TypeContainer.CurrentType.ResolveType (ec);
+ else
+ ctype = ec.ContainerType;
+
+ if (TypeManager.IsEqual (ctype, FieldInfo.DeclaringType))
return this;
}
return true;
}
-
- override public void Emit (EmitContext ec)
+
+ public void Emit (EmitContext ec, bool leave_copy)
{
ILGenerator ig = ec.ig;
bool is_volatile = false;
ig.Emit (OpCodes.Volatile);
ig.Emit (OpCodes.Ldsfld, FieldInfo);
- return;
- }
-
- if (instance_expr.Type.IsValueType){
- IMemoryLocation ml;
- LocalTemporary tempo = null;
-
- if (!(instance_expr is IMemoryLocation)){
- tempo = new LocalTemporary (ec, instance_expr.Type);
-
- if (ec.RemapToProxy)
- ec.EmitThis ();
-
- InstanceExpression.Emit (ec);
- tempo.Store (ec);
- ml = tempo;
- } else
- ml = (IMemoryLocation) instance_expr;
-
- ml.AddressOf (ec, AddressOp.Load);
} else {
- if (ec.RemapToProxy)
- ec.EmitThis ();
- else
- instance_expr.Emit (ec);
+ if (!prepared)
+ EmitInstance (ec);
+
+ if (is_volatile)
+ ig.Emit (OpCodes.Volatile);
+
+ ig.Emit (OpCodes.Ldfld, FieldInfo);
+ }
+
+ if (leave_copy) {
+ ec.ig.Emit (OpCodes.Dup);
+ if (!FieldInfo.IsStatic) {
+ temp = new LocalTemporary (ec, this.Type);
+ temp.Store (ec);
+ }
}
- if (is_volatile)
- ig.Emit (OpCodes.Volatile);
-
- ig.Emit (OpCodes.Ldfld, FieldInfo);
}
- public void EmitAssign (EmitContext ec, Expression source)
+ public void EmitAssign (EmitContext ec, Expression source, bool leave_copy, bool prepare_for_load)
{
FieldAttributes fa = FieldInfo.Attributes;
bool is_static = (fa & FieldAttributes.Static) != 0;
bool is_readonly = (fa & FieldAttributes.InitOnly) != 0;
ILGenerator ig = ec.ig;
+ prepared = prepare_for_load;
if (is_readonly && !ec.IsConstructor){
Report_AssignToReadonly (!is_static);
return;
}
- if (!is_static){
- Expression instance = instance_expr;
-
- if (instance.Type.IsValueType){
- IMemoryLocation ml = (IMemoryLocation) instance;
-
- ml.AddressOf (ec, AddressOp.Store);
- } else {
- if (ec.RemapToProxy)
- ec.EmitThis ();
- else
- instance.Emit (ec);
- }
+ if (!is_static) {
+ EmitInstance (ec);
+ if (prepare_for_load)
+ ig.Emit (OpCodes.Dup);
}
source.Emit (ec);
+ if (leave_copy) {
+ ec.ig.Emit (OpCodes.Dup);
+ if (!FieldInfo.IsStatic) {
+ temp = new LocalTemporary (ec, this.Type);
+ temp.Store (ec);
+ }
+ }
if (FieldInfo is FieldBuilder){
FieldBase f = TypeManager.GetField (FieldInfo);
ig.Emit (OpCodes.Stsfld, FieldInfo);
else
ig.Emit (OpCodes.Stfld, FieldInfo);
+
+ if (temp != null)
+ temp.Emit (ec);
+ }
+
+ void EmitInstance (EmitContext ec)
+ {
+ if (instance_expr.Type.IsValueType) {
+ if (instance_expr is IMemoryLocation) {
+ ((IMemoryLocation) instance_expr).AddressOf (ec, AddressOp.LoadStore);
+ } else {
+ LocalTemporary t = new LocalTemporary (ec, instance_expr.Type);
+ instance_expr.Emit (ec);
+ t.Store (ec);
+ t.AddressOf (ec, AddressOp.Store);
+ }
+ } else
+ instance_expr.Emit (ec);
+ }
+
+ public override void Emit (EmitContext ec)
+ {
+ Emit (ec, false);
}
public void AddressOf (EmitContext ec, AddressOp mode)
// Handle initonly fields specially: make a copy and then
// get the address of the copy.
//
- if (FieldInfo.IsInitOnly && !ec.IsConstructor){
+ bool need_copy;
+ if (FieldInfo.IsInitOnly){
+ need_copy = true;
+ if (ec.IsConstructor){
+ if (FieldInfo.IsStatic){
+ if (ec.IsStatic)
+ need_copy = false;
+ } else
+ need_copy = false;
+ }
+ } else
+ need_copy = false;
+
+ if (need_copy){
LocalBuilder local;
-
Emit (ec);
local = ig.DeclareLocal (type);
ig.Emit (OpCodes.Stloc, local);
return;
}
- if (FieldInfo.IsStatic)
- ig.Emit (OpCodes.Ldsflda, FieldInfo);
- else {
- //
- // In the case of `This', we call the AddressOf method, which will
- // only load the pointer, and not perform an Ldobj immediately after
- // the value has been loaded into the stack.
- //
- if (instance_expr is This)
- ((This)instance_expr).AddressOf (ec, AddressOp.LoadStore);
- else if (instance_expr.Type.IsValueType && instance_expr is IMemoryLocation){
- IMemoryLocation ml = (IMemoryLocation) instance_expr;
- ml.AddressOf (ec, AddressOp.LoadStore);
- } else
- instance_expr.Emit (ec);
+ if (FieldInfo.IsStatic){
+ ig.Emit (OpCodes.Ldsflda, FieldInfo);
+ } else {
+ EmitInstance (ec);
ig.Emit (OpCodes.Ldflda, FieldInfo);
}
}
bool must_do_cs1540_check;
Expression instance_expr;
+ LocalTemporary temp;
+ bool prepared;
public PropertyExpr (EmitContext ec, PropertyInfo pi, Location l)
{
return true;
}
- MethodInfo GetAccessor (Type invocation_type, string accessor_name)
+ MethodInfo FindAccessor (Type invocation_type, bool is_set)
{
BindingFlags flags = BindingFlags.Public | BindingFlags.NonPublic |
- BindingFlags.Static | BindingFlags.Instance;
- MemberInfo[] group;
+ BindingFlags.Static | BindingFlags.Instance |
+ BindingFlags.DeclaredOnly;
- group = TypeManager.MemberLookup (
- invocation_type, invocation_type, PropertyInfo.DeclaringType,
- MemberTypes.Method, flags, accessor_name + "_" + PropertyInfo.Name);
+ Type current = PropertyInfo.DeclaringType;
+ for (; current != null; current = current.BaseType) {
+ MemberInfo[] group = TypeManager.MemberLookup (
+ invocation_type, invocation_type, current,
+ MemberTypes.Property, flags, PropertyInfo.Name, null);
- //
- // The first method is the closest to us
- //
- if (group == null)
+ if (group == null)
+ continue;
+
+ if (group.Length != 1)
+ // Oooops, can this ever happen ?
+ return null;
+
+ PropertyInfo pi = (PropertyInfo) group [0];
+
+ MethodInfo get = pi.GetGetMethod (true);
+ MethodInfo set = pi.GetSetMethod (true);
+
+ if (is_set) {
+ if (set != null)
+ return set;
+ } else {
+ if (get != null)
+ return get;
+ }
+
+ MethodInfo accessor = get != null ? get : set;
+ if (accessor == null)
+ continue;
+ if ((accessor.Attributes & MethodAttributes.NewSlot) != 0)
+ break;
+ }
+
+ return null;
+ }
+
+ MethodInfo GetAccessor (Type invocation_type, bool is_set)
+ {
+ MethodInfo mi = FindAccessor (invocation_type, is_set);
+ if (mi == null)
return null;
- foreach (MethodInfo mi in group) {
- MethodAttributes ma = mi.Attributes & MethodAttributes.MemberAccessMask;
+ MethodAttributes ma = mi.Attributes & MethodAttributes.MemberAccessMask;
- //
- // If only accessible to the current class or children
- //
- if (ma == MethodAttributes.Private) {
- Type declaring_type = mi.DeclaringType;
+ //
+ // If only accessible to the current class or children
+ //
+ if (ma == MethodAttributes.Private) {
+ Type declaring_type = mi.DeclaringType;
- if (invocation_type != declaring_type){
- if (TypeManager.IsSubclassOrNestedChildOf (invocation_type, mi.DeclaringType))
- return mi;
- else
- continue;
- } else
+ if (invocation_type != declaring_type){
+ if (TypeManager.IsSubclassOrNestedChildOf (invocation_type, mi.DeclaringType))
return mi;
- }
- //
- // FamAndAssem requires that we not only derivate, but we are on the
- // same assembly.
- //
- if (ma == MethodAttributes.FamANDAssem){
- if (mi.DeclaringType.Assembly != invocation_type.Assembly)
- continue;
else
- return mi;
- }
+ return null;
+ } else
+ return mi;
+ }
+ //
+ // FamAndAssem requires that we not only derivate, but we are on the
+ // same assembly.
+ //
+ if (ma == MethodAttributes.FamANDAssem){
+ if (mi.DeclaringType.Assembly != invocation_type.Assembly)
+ return null;
+ else
+ return mi;
+ }
- // Assembly and FamORAssem succeed if we're in the same assembly.
- if ((ma == MethodAttributes.Assembly) || (ma == MethodAttributes.FamORAssem)){
- if (mi.DeclaringType.Assembly != invocation_type.Assembly)
- continue;
- else
- return mi;
- }
+ // Assembly and FamORAssem succeed if we're in the same assembly.
+ if ((ma == MethodAttributes.Assembly) || (ma == MethodAttributes.FamORAssem)){
+ if (mi.DeclaringType.Assembly == invocation_type.Assembly)
+ return mi;
+ }
- // We already know that we aren't in the same assembly.
- if (ma == MethodAttributes.Assembly)
- continue;
+ // We already know that we aren't in the same assembly.
+ if (ma == MethodAttributes.Assembly)
+ return null;
- // Family and FamANDAssem require that we derive.
- if ((ma == MethodAttributes.Family) || (ma == MethodAttributes.FamANDAssem)){
- if (!TypeManager.IsSubclassOrNestedChildOf (invocation_type, mi.DeclaringType))
- continue;
- else {
+ // Family and FamANDAssem require that we derive.
+ if ((ma == MethodAttributes.Family) || (ma == MethodAttributes.FamANDAssem) || (ma == MethodAttributes.FamORAssem)){
+ if (!TypeManager.IsSubclassOrNestedChildOf (invocation_type, mi.DeclaringType))
+ return null;
+ else {
+ if (!TypeManager.IsNestedChildOf (invocation_type, mi.DeclaringType))
must_do_cs1540_check = true;
- return mi;
- }
+ return mi;
}
-
- return mi;
}
- return null;
+ return mi;
}
//
//
void ResolveAccessors (EmitContext ec)
{
- getter = GetAccessor (ec.ContainerType, "get");
+ getter = GetAccessor (ec.ContainerType, false);
if ((getter != null) && getter.IsStatic)
is_static = true;
- setter = GetAccessor (ec.ContainerType, "set");
+ setter = GetAccessor (ec.ContainerType, true);
if ((setter != null) && setter.IsStatic)
is_static = true;
if (setter == null && getter == null){
- Error (122, "`" + PropertyInfo.Name + "' " +
- "is inaccessible because of its protection level");
-
+ Report.Error_T (122, loc, PropertyInfo.Name);
}
}
override public Expression DoResolve (EmitContext ec)
{
+ if (getter != null){
+ if (TypeManager.GetArgumentTypes (getter).Length != 0){
+ Report.Error (
+ 117, loc, "`{0}' does not contain a " +
+ "definition for `{1}'.", getter.DeclaringType,
+ Name);
+ return null;
+ }
+ }
+
if (getter == null){
//
// The following condition happens if the PropertyExpr was
return null;
}
+ if (TypeManager.GetArgumentTypes (setter).Length != 1){
+ Report.Error (
+ 117, loc, "`{0}' does not contain a " +
+ "definition for `{1}'.", getter.DeclaringType,
+ Name);
+ return null;
+ }
+
if (!InstanceResolve (ec))
return null;
PropertyInfo.DeclaringType + "." +PropertyInfo.Name);
return null;
}
+
+ //
+ // Check that we are not making changes to a temporary memory location
+ //
+ if (instance_expr != null && instance_expr.Type.IsValueType && !(instance_expr is IMemoryLocation)) {
+ // FIXME: Provide better error reporting.
+ Error (1612, "Cannot modify expression because it is not a variable.");
+ return null;
+ }
+
return this;
}
- override public void Emit (EmitContext ec)
+
+
+ public override void Emit (EmitContext ec)
+ {
+ Emit (ec, false);
+ }
+
+ void EmitInstance (EmitContext ec)
{
+ if (is_static)
+ return;
+
+ if (instance_expr.Type.IsValueType) {
+ if (instance_expr is IMemoryLocation) {
+ ((IMemoryLocation) instance_expr).AddressOf (ec, AddressOp.LoadStore);
+ } else {
+ LocalTemporary t = new LocalTemporary (ec, instance_expr.Type);
+ instance_expr.Emit (ec);
+ t.Store (ec);
+ t.AddressOf (ec, AddressOp.Store);
+ }
+ } else
+ instance_expr.Emit (ec);
+
+ if (prepared)
+ ec.ig.Emit (OpCodes.Dup);
+ }
+
+
+ public void Emit (EmitContext ec, bool leave_copy)
+ {
+ if (!prepared)
+ EmitInstance (ec);
+
//
// Special case: length of single dimension array property is turned into ldlen
//
// System.Array.Length can be called, but the Type does not
// support invoking GetArrayRank, so test for that case first
//
- if (iet != TypeManager.array_type && (iet.GetArrayRank () == 1)){
- instance_expr.Emit (ec);
+ if (iet != TypeManager.array_type && (iet.GetArrayRank () == 1)) {
ec.ig.Emit (OpCodes.Ldlen);
+ ec.ig.Emit (OpCodes.Conv_I4);
return;
}
}
- Invocation.EmitCall (ec, IsBase, IsStatic, instance_expr, getter, null, loc);
+ Invocation.EmitCall (ec, IsBase, IsStatic, new EmptyAddressOf (), getter, null, loc);
+ if (!leave_copy)
+ return;
+
+ ec.ig.Emit (OpCodes.Dup);
+ if (!is_static) {
+ temp = new LocalTemporary (ec, this.Type);
+ temp.Store (ec);
+ }
}
//
// Implements the IAssignMethod interface for assignments
//
- public void EmitAssign (EmitContext ec, Expression source)
+ public void EmitAssign (EmitContext ec, Expression source, bool leave_copy, bool prepare_for_load)
{
- Argument arg = new Argument (source, Argument.AType.Expression);
- ArrayList args = new ArrayList ();
+ prepared = prepare_for_load;
+
+ EmitInstance (ec);
- args.Add (arg);
- Invocation.EmitCall (ec, IsBase, IsStatic, instance_expr, setter, args, loc);
+ source.Emit (ec);
+ if (leave_copy) {
+ ec.ig.Emit (OpCodes.Dup);
+ if (!is_static) {
+ temp = new LocalTemporary (ec, this.Type);
+ temp.Store (ec);
+ }
+ }
+
+ ArrayList args = new ArrayList (1);
+ args.Add (new Argument (new EmptyAddressOf (), Argument.AType.Expression));
+
+ Invocation.EmitCall (ec, IsBase, IsStatic, new EmptyAddressOf (), setter, args, loc);
+
+ if (temp != null)
+ temp.Emit (ec);
}
override public void EmitStatement (EmitContext ec)
/// </summary>
public class EventExpr : Expression, IMemberExpr {
public readonly EventInfo EventInfo;
- public Expression instance_expr;
+ Expression instance_expr;
bool is_static;
MethodInfo add_accessor, remove_accessor;
projects / mono.git / blobdiff