bool VerifyFixed (bool is_expression);
}
- /// <summary>
- /// This interface denotes an expression which evaluates to a member
- /// of a struct or a class.
- /// </summary>
- public interface IMemberExpr
- {
- /// <summary>
- /// The name of this member.
- /// </summary>
- string Name {
- get;
- }
-
- /// <summary>
- /// Whether this is an instance member.
- /// </summary>
- bool IsInstance {
- get;
- }
-
- /// <summary>
- /// Whether this is a static member.
- /// </summary>
- bool IsStatic {
- get;
- }
-
- /// <summary>
- /// The type which declares this member.
- /// </summary>
- Type DeclaringType {
- get;
- }
-
- /// <summary>
- /// The instance expression associated with this member, if it's a
- /// non-static member.
- /// </summary>
- Expression InstanceExpression {
- get; set;
- }
- }
-
/// <remarks>
/// Base class for expressions
/// </remarks>
//
// If only accessible to the current class or children
//
- if (ma == MethodAttributes.Private) {
- Type declaring_type = mi.DeclaringType;
+ if (ma == MethodAttributes.Private)
+ return invocation_type == mi.DeclaringType ||
+ TypeManager.IsNestedChildOf (invocation_type, mi.DeclaringType);
- if (invocation_type != declaring_type)
- return TypeManager.IsNestedChildOf (invocation_type, declaring_type);
-
- return true;
- }
- //
- // FamAndAssem requires that we not only derivate, but we are on the
- // same assembly.
- //
- if (ma == MethodAttributes.FamANDAssem){
- return (mi.DeclaringType.Assembly != invocation_type.Assembly);
- }
-
- // 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)
+ if (mi.DeclaringType.Assembly == invocation_type.Assembly) {
+ if (ma == MethodAttributes.Assembly || ma == MethodAttributes.FamORAssem)
return true;
+ } else {
+ if (ma == MethodAttributes.Assembly || ma == MethodAttributes.FamANDAssem)
+ return false;
}
- // We already know that we aren't in the same assembly.
- if (ma == MethodAttributes.Assembly)
- return false;
-
// Family and FamANDAssem require that we derive.
- if ((ma == MethodAttributes.Family) || (ma == MethodAttributes.FamANDAssem) || (ma == MethodAttributes.FamORAssem)){
+ // FamORAssem requires that we derive if in different assemblies.
+ if (ma == MethodAttributes.Family ||
+ ma == MethodAttributes.FamANDAssem ||
+ ma == MethodAttributes.FamORAssem) {
if (!TypeManager.IsNestedFamilyAccessible (invocation_type, mi.DeclaringType))
return false;
/// Currently ResolveLValue wraps DoResolveLValue to perform sanity
/// checking and assertion checking on what we expect from Resolve
/// </remarks>
- public Expression ResolveLValue (EmitContext ec, Expression right_side)
+ public Expression ResolveLValue (EmitContext ec, Expression right_side, Location loc)
{
int errors = Report.Errors;
Expression e = DoResolveLValue (ec, right_side);
if (e == null) {
if (errors == Report.Errors)
- Report.Error (131, Location, "The left-hand side of an assignment or mutating operation must be a variable, property or indexer");
+ Report.Error (131, loc, "The left-hand side of an assignment or mutating operation must be a variable, property or indexer");
return null;
}
Location loc)
{
if (almostMatchedMembers.Count != 0) {
- if (qualifier_type == null) {
- foreach (MemberInfo m in almostMatchedMembers)
+ for (int i = 0; i < almostMatchedMembers.Count; ++i) {
+ MemberInfo m = (MemberInfo) almostMatchedMembers [i];
+ for (int j = 0; j < i; ++j) {
+ if (m == almostMatchedMembers [j]) {
+ m = null;
+ break;
+ }
+ }
+ if (m == null)
+ continue;
+
+ Type declaring_type = m.DeclaringType;
+
+ Report.SymbolRelatedToPreviousError (m);
+ if (qualifier_type == null) {
Report.Error (38, loc,
"Cannot access non-static member `{0}' via nested type `{1}'",
TypeManager.GetFullNameSignature (m),
TypeManager.CSharpName (ec.ContainerType));
- return;
- }
-
- 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 base of the
- // ec.ContainerType and the lookup succeeds with the latter one,
- // then we are in this situation.
- for (int i = 0; i < almostMatchedMembers.Count; ++i) {
- MemberInfo m = (MemberInfo) almostMatchedMembers [i];
- for (int j = 0; j < i; ++j) {
- if (m == almostMatchedMembers [j]) {
- m = null;
- break;
- }
- }
- if (m == null)
- continue;
-
- Report.SymbolRelatedToPreviousError (m);
+
+ } else if (qualifier_type != ec.ContainerType &&
+ TypeManager.IsNestedFamilyAccessible (ec.ContainerType, declaring_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 base of the
+ // ec.ContainerType and the lookup succeeds with the latter one,
+ // then we are in this situation.
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));
+ } else {
+ Report.Error (122, loc,
+ "'{0}' is inaccessible due to its protection level",
+ TypeManager.GetFullNameSignature (m));
}
- return;
}
almostMatchedMembers.Clear ();
+ return;
}
object lookup = TypeManager.MemberLookup (queried_type, null, queried_type,
}
}
- static public MemberInfo GetFieldFromEvent (EventExpr event_expr)
- {
- EventInfo ei = event_expr.EventInfo;
-
- return TypeManager.GetPrivateFieldOfEvent (ei);
- }
-
/// <summary>
/// Returns an expression that can be used to invoke operator true
/// on the expression if it exists.
child.Emit (ec);
}
}
+ /// <summary>
+ /// This is a numeric cast to a Decimal
+ /// </summary>
+ public class CastToDecimal : EmptyCast {
+
+ MethodInfo conversion_operator;
+
+ public CastToDecimal (EmitContext ec, Expression child)
+ : this (ec, child, false)
+ {
+ }
+
+ public CastToDecimal (EmitContext ec, Expression child, bool find_explicit)
+ : base (child, TypeManager.decimal_type)
+ {
+ conversion_operator = GetConversionOperator (ec, find_explicit);
+
+ if (conversion_operator == null)
+ Convert.Error_CannotImplicitConversion (loc, child.Type, type);
+ }
+
+ // Returns the implicit operator that converts from
+ // 'child.Type' to System.Decimal.
+ MethodInfo GetConversionOperator (EmitContext ec, bool find_explicit)
+ {
+ string operator_name = "op_Implicit";
+
+ if (find_explicit)
+ operator_name = "op_Explicit";
+
+ MethodGroupExpr opers = Expression.MethodLookup (
+ ec, type, operator_name, loc) as MethodGroupExpr;
+
+ if (opers == null)
+ Convert.Error_CannotImplicitConversion (loc, child.Type, type);
+
+ foreach (MethodInfo oper in opers.Methods) {
+ ParameterData pd = TypeManager.GetParameterData (oper);
+
+ if (pd.ParameterType (0) == child.Type && oper.ReturnType == type)
+ return oper;
+ }
+
+ return null;
+ }
+ public override void Emit (EmitContext ec)
+ {
+ ILGenerator ig = ec.ig;
+ child.Emit (ec);
+
+ ig.Emit (OpCodes.Call, conversion_operator);
+ }
+ }
+ /// <summary>
+ /// This is an explicit numeric cast from a Decimal
+ /// </summary>
+ public class CastFromDecimal : EmptyCast
+ {
+ MethodInfo conversion_operator;
+ public CastFromDecimal (EmitContext ec, Expression child, Type return_type)
+ : base (child, return_type)
+ {
+ if (child.Type != TypeManager.decimal_type)
+ throw new InternalErrorException (
+ "The expected type is Decimal, instead it is " + child.Type.FullName);
+
+ conversion_operator = GetConversionOperator (ec);
+ if (conversion_operator == null)
+ Convert.Error_CannotImplicitConversion (loc, child.Type, type);
+ }
+
+ // Returns the explicit operator that converts from an
+ // express of type System.Decimal to 'type'.
+ MethodInfo GetConversionOperator (EmitContext ec)
+ {
+ MethodGroupExpr opers = Expression.MethodLookup (
+ ec, child.Type, "op_Explicit", loc) as MethodGroupExpr;
+
+ if (opers == null)
+ Convert.Error_CannotImplicitConversion (loc, child.Type, type);
+
+ foreach (MethodInfo oper in opers.Methods) {
+ ParameterData pd = TypeManager.GetParameterData (oper);
+
+ if (pd.ParameterType (0) == child.Type && oper.ReturnType == type)
+ return oper;
+ }
+
+ return null;
+ }
+ public override void Emit (EmitContext ec)
+ {
+ ILGenerator ig = ec.ig;
+ child.Emit (ec);
+
+ ig.Emit (OpCodes.Call, conversion_operator);
+ }
+ }
//
// We need to special case this since an empty cast of
/// </summary>
public class SimpleName : Expression {
public string Name;
+ bool in_transit;
public SimpleName (string name, Location l)
{
resolved_to.Type.Name == Name &&
(ec.DeclSpace.LookupType (Name, loc, /* ignore_cs0104 = */ true) != null);
}
-
- //
- // Checks whether we are trying to access an instance
- // property, method or field from a static body.
- //
- Expression MemberStaticCheck (EmitContext ec, Expression e, bool intermediate)
- {
- if (e is IMemberExpr){
- IMemberExpr member = (IMemberExpr) e;
-
- if (!member.IsStatic &&
- (!intermediate || !IdenticalNameAndTypeName (ec, e, loc))) {
- Error_ObjectRefRequired (ec, loc, Name);
- return null;
- }
- }
-
- return e;
- }
public override Expression DoResolve (EmitContext ec)
{
Expression SimpleNameResolve (EmitContext ec, Expression right_side, bool intermediate)
{
+ if (in_transit)
+ return null;
+ in_transit = true;
+
Expression e = DoSimpleNameResolve (ec, right_side, intermediate);
if (e == null)
return null;
- Block current_block = ec.CurrentBlock;
- if (current_block != null){
- if (current_block.IsVariableNameUsedInChildBlock (Name)) {
- Report.Error (135, Location,
- "'{0}' has a different meaning in a child block", Name);
- return null;
- }
- }
+ if (ec.CurrentBlock == null || ec.CurrentBlock.CheckInvariantMeaningInBlock (Name, e, Location))
+ return e;
- return e;
+ return null;
}
/// <remarks>
var = new LocalVariableReference (ec.CurrentBlock, Name, loc);
if (right_side != null)
- return var.ResolveLValue (ec, right_side);
+ return var.ResolveLValue (ec, right_side, loc);
else
return var.Resolve (ec);
}
- ParameterReference pref = current_block.GetParameterReference (Name, loc);
+ ParameterReference pref = current_block.Toplevel.GetParameterReference (Name, loc);
if (pref != null) {
if (right_side != null)
- return pref.ResolveLValue (ec, right_side);
+ return pref.ResolveLValue (ec, right_side, loc);
else
return pref.Resolve (ec);
}
if (e is TypeExpr)
return e;
- if (e is IMemberExpr) {
- e = MemberAccess.ResolveMemberAccess (ec, e, null, loc, this);
+ if (e is MemberExpr) {
+ MemberExpr me = (MemberExpr) e;
+
+ Expression left;
+ if (me.IsInstance) {
+ if (ec.IsStatic || ec.IsFieldInitializer) {
+ //
+ // Note that an MemberExpr can be both IsInstance and IsStatic.
+ // An unresolved MethodGroupExpr can contain both kinds of methods
+ // and each predicate is true if the MethodGroupExpr contains
+ // at least one of that kind of method.
+ //
+
+ if (!me.IsStatic &&
+ (!intermediate || !IdenticalNameAndTypeName (ec, me, loc))) {
+ Error_ObjectRefRequired (ec, loc, Name);
+ return null;
+ }
+
+ //
+ // Pass the buck to MemberAccess and Invocation.
+ //
+ left = EmptyExpression.Null;
+ } else {
+ left = ec.GetThis (loc);
+ }
+ } else {
+ left = new TypeExpression (ec.ContainerType, loc);
+ }
+
+ e = me.ResolveMemberAccess (ec, left, loc, null);
if (e == null)
return null;
- IMemberExpr me = e as IMemberExpr;
+ me = e as MemberExpr;
if (me == null)
return e;
- // 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.IsNestedFamilyAccessible (me.InstanceExpression.Type, me.DeclaringType) &&
me.InstanceExpression.Type != me.DeclaringType &&
}
return (right_side != null)
- ? e.DoResolveLValue (ec, right_side)
- : e.DoResolve (ec);
+ ? me.DoResolveLValue (ec, right_side)
+ : me.DoResolve (ec);
}
- if (ec.IsStatic || ec.IsFieldInitializer){
- return MemberStaticCheck (ec, e, intermediate);
- } else
- return e;
+ return e;
}
public override void Emit (EmitContext ec)
}
}
+ /// <summary>
+ /// This class denotes an expression which evaluates to a member
+ /// of a struct or a class.
+ /// </summary>
+ public abstract class MemberExpr : Expression
+ {
+ /// <summary>
+ /// The name of this member.
+ /// </summary>
+ public abstract string Name {
+ get;
+ }
+
+ /// <summary>
+ /// Whether this is an instance member.
+ /// </summary>
+ public abstract bool IsInstance {
+ get;
+ }
+
+ /// <summary>
+ /// Whether this is a static member.
+ /// </summary>
+ public abstract bool IsStatic {
+ get;
+ }
+
+ /// <summary>
+ /// The type which declares this member.
+ /// </summary>
+ public abstract Type DeclaringType {
+ get;
+ }
+
+ /// <summary>
+ /// The instance expression associated with this member, if it's a
+ /// non-static member.
+ /// </summary>
+ public Expression InstanceExpression;
+
+ public static void error176 (Location loc, string name)
+ {
+ Report.Error (176, loc, "Static member `" + name + "' cannot be accessed " +
+ "with an instance reference, qualify with a type name instead");
+ }
+
+
+ // TODO: possible optimalization
+ // Cache resolved constant result in FieldBuilder <-> expression map
+ public virtual Expression ResolveMemberAccess (EmitContext ec, Expression left, Location loc,
+ SimpleName original)
+ {
+ //
+ // Precondition:
+ // original == null || original.Resolve (...) ==> left
+ //
+
+ if (left is TypeExpr) {
+ if (!IsStatic) {
+ SimpleName.Error_ObjectRefRequired (ec, loc, Name);
+ return null;
+ }
+
+ return this;
+ }
+
+ if (!IsInstance) {
+ if (original != null && original.IdenticalNameAndTypeName (ec, left, loc))
+ return this;
+
+ error176 (loc, Name);
+ return null;
+ }
+
+ InstanceExpression = left;
+
+ return this;
+ }
+ }
+
/// <summary>
/// MethodGroup Expression.
///
/// This is a fully resolved expression that evaluates to a type
/// </summary>
- public class MethodGroupExpr : Expression, IMemberExpr {
+ public class MethodGroupExpr : MemberExpr {
public MethodBase [] Methods;
- Expression instance_expression = null;
- bool is_explicit_impl = false;
bool identical_type_name = false;
bool is_base;
type = TypeManager.object_type;
}
- public Type DeclaringType {
+ public override Type DeclaringType {
get {
//
// The methods are arranged in this order:
return Methods [0].DeclaringType;
}
}
-
- //
- // `A method group may have associated an instance expression'
- //
- public Expression InstanceExpression {
- get {
- return instance_expression;
- }
-
- set {
- instance_expression = value;
- }
- }
-
- public bool IsExplicitImpl {
- get {
- return is_explicit_impl;
- }
-
- set {
- is_explicit_impl = value;
- }
- }
public bool IdenticalTypeName {
get {
}
}
- public string Name {
+ public override string Name {
get {
return Methods [0].Name;
}
}
- public bool IsInstance {
+ public override bool IsInstance {
get {
foreach (MethodBase mb in Methods)
if (!mb.IsStatic)
}
}
- public bool IsStatic {
+ public override bool IsStatic {
get {
foreach (MethodBase mb in Methods)
if (mb.IsStatic)
return false;
}
}
+
+ public override Expression ResolveMemberAccess (EmitContext ec, Expression left, Location loc,
+ SimpleName original)
+ {
+ if (!(left is TypeExpr) &&
+ original != null && original.IdenticalNameAndTypeName (ec, left, loc))
+ IdenticalTypeName = true;
+
+ return base.ResolveMemberAccess (ec, left, loc, original);
+ }
override public Expression DoResolve (EmitContext ec)
{
if (!IsInstance)
- instance_expression = null;
+ InstanceExpression = null;
- if (instance_expression != null) {
- instance_expression = instance_expression.DoResolve (ec);
- if (instance_expression == null)
+ if (InstanceExpression != null) {
+ InstanceExpression = InstanceExpression.DoResolve (ec);
+ if (InstanceExpression == null)
return null;
}
/// <summary>
/// Fully resolved expression that evaluates to a Field
/// </summary>
- public class FieldExpr : Expression, IAssignMethod, IMemoryLocation, IMemberExpr, IVariable {
+ public class FieldExpr : MemberExpr, IAssignMethod, IMemoryLocation, IVariable {
public readonly FieldInfo FieldInfo;
- Expression instance_expr;
VariableInfo variable_info;
LocalTemporary temp;
bool prepared;
+ bool in_initializer;
+
+ public FieldExpr (FieldInfo fi, Location l, bool in_initializer):
+ this (fi, l)
+ {
+ this.in_initializer = in_initializer;
+ }
public FieldExpr (FieldInfo fi, Location l)
{
loc = l;
}
- public string Name {
+ public override string Name {
get {
return FieldInfo.Name;
}
}
- public bool IsInstance {
+ public override bool IsInstance {
get {
return !FieldInfo.IsStatic;
}
}
- public bool IsStatic {
+ public override bool IsStatic {
get {
return FieldInfo.IsStatic;
}
}
- public Type DeclaringType {
+ public override Type DeclaringType {
get {
return FieldInfo.DeclaringType;
}
}
- public Expression InstanceExpression {
+ public VariableInfo VariableInfo {
get {
- return instance_expr;
+ return variable_info;
}
+ }
- set {
- instance_expr = value;
+ public override Expression ResolveMemberAccess (EmitContext ec, Expression left, Location loc,
+ SimpleName original)
+ {
+ bool left_is_type = left is TypeExpr;
+
+ Type decl_type = FieldInfo.DeclaringType;
+
+ bool is_emitted = FieldInfo is FieldBuilder;
+ Type t = FieldInfo.FieldType;
+
+ if (is_emitted) {
+ Const c = TypeManager.LookupConstant ((FieldBuilder) FieldInfo);
+
+ if (c != null) {
+ object o;
+ if (!c.LookupConstantValue (out o))
+ return null;
+
+ c.SetMemberIsUsed ();
+ object real_value = ((Constant) c.Expr).GetValue ();
+
+ Expression exp = Constantify (real_value, t);
+
+ if (!left_is_type &&
+ (original == null || !original.IdenticalNameAndTypeName (ec, left, loc))) {
+ Report.SymbolRelatedToPreviousError (c);
+ error176 (loc, c.GetSignatureForError ());
+ return null;
+ }
+
+ return exp;
+ }
}
- }
- public VariableInfo VariableInfo {
- get {
- return variable_info;
+ //
+ // Decimal constants cannot be encoded in the constant blob, and thus are marked
+ // as IsInitOnly ('readonly' in C# parlance). We get its value from the
+ // DecimalConstantAttribute metadata.
+ //
+ if (FieldInfo.IsInitOnly && !is_emitted && t == TypeManager.decimal_type) {
+ object[] attrs = FieldInfo.GetCustomAttributes (TypeManager.decimal_constant_attribute_type, false);
+ if (attrs.Length == 1)
+ return new DecimalConstant (((System.Runtime.CompilerServices.DecimalConstantAttribute) attrs [0]).Value);
}
+
+ if (FieldInfo.IsLiteral) {
+ object o;
+
+ if (is_emitted)
+ o = TypeManager.GetValue ((FieldBuilder) FieldInfo);
+ else
+ o = FieldInfo.GetValue (FieldInfo);
+
+ if (decl_type.IsSubclassOf (TypeManager.enum_type)) {
+ if (!left_is_type &&
+ (original == null || !original.IdenticalNameAndTypeName (ec, left, loc))) {
+ error176 (loc, FieldInfo.Name);
+ return null;
+ }
+
+ Expression enum_member = MemberLookup (
+ ec, decl_type, "value__", MemberTypes.Field,
+ AllBindingFlags | BindingFlags.NonPublic, loc);
+
+ Enum en = TypeManager.LookupEnum (decl_type);
+
+ Constant c;
+ if (en != null)
+ c = Constantify (o, en.UnderlyingType);
+ else
+ c = Constantify (o, enum_member.Type);
+
+ return new EnumConstant (c, decl_type);
+ }
+
+ Expression exp = Constantify (o, t);
+
+ if (!left_is_type) {
+ error176 (loc, FieldInfo.Name);
+ return null;
+ }
+
+ return exp;
+ }
+
+ if (t.IsPointer && !ec.InUnsafe) {
+ UnsafeError (loc);
+ return null;
+ }
+
+ return base.ResolveMemberAccess (ec, left, loc, original);
}
override public Expression DoResolve (EmitContext ec)
{
+ if (ec.InRefOutArgumentResolving && FieldInfo.IsInitOnly && !ec.IsConstructor && FieldInfo.FieldType.IsValueType) {
+ if (FieldInfo.FieldType is TypeBuilder) {
+ if (FieldInfo.IsStatic)
+ Report.Error (1651, loc, "Members of readonly static field '{0}.{1}' cannot be passed ref or out (except in a constructor)",
+ TypeManager.CSharpName (DeclaringType), Name);
+ else
+ Report.Error (1649, loc, "Members of readonly field '{0}.{1}' cannot be passed ref or out (except in a constructor)",
+ TypeManager.CSharpName (DeclaringType), Name);
+ } else {
+ if (FieldInfo.IsStatic)
+ Report.Error (199, loc, "A static readonly field '{0}' cannot be passed ref or out (except in a static constructor)",
+ Name);
+ else
+ Report.Error (192, loc, "A readonly field '{0}' cannot be passed ref or out (except in a constructor)",
+ Name);
+ }
+ return null;
+ }
+
if (!FieldInfo.IsStatic){
- if (instance_expr == null){
+ if (InstanceExpression == null){
//
// This can happen when referencing an instance field using
// a fully qualified type expression: TypeName.InstanceField = xxx
// 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.
- instance_expr = instance_expr.Resolve (ec, ResolveFlags.VariableOrValue |
+ InstanceExpression = InstanceExpression.Resolve (ec, ResolveFlags.VariableOrValue |
ResolveFlags.DisableFlowAnalysis);
- if (instance_expr == null)
+ if (InstanceExpression == null)
return null;
}
- ObsoleteAttribute oa;
- FieldBase f = TypeManager.GetField (FieldInfo);
- if (f != null) {
- oa = f.GetObsoleteAttribute (f.Parent);
- if (oa != null)
- AttributeTester.Report_ObsoleteMessage (oa, f.GetSignatureForError (), loc);
+ if (!in_initializer) {
+ ObsoleteAttribute oa;
+ FieldBase f = TypeManager.GetField (FieldInfo);
+ if (f != null) {
+ oa = f.GetObsoleteAttribute (f.Parent);
+ 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);
+ // 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 (ec.CurrentAnonymousMethod != null){
}
// If the instance expression is a local variable or parameter.
- IVariable var = instance_expr as IVariable;
+ IVariable var = InstanceExpression as IVariable;
if ((var == null) || (var.VariableInfo == null))
return this;
override public Expression DoResolveLValue (EmitContext ec, Expression right_side)
{
- IVariable var = instance_expr as IVariable;
+ IVariable var = InstanceExpression as IVariable;
if ((var != null) && (var.VariableInfo != null))
var.VariableInfo.SetFieldAssigned (ec, FieldInfo.Name);
if (e == null)
return null;
- if (!FieldInfo.IsStatic && (instance_expr.Type.IsValueType && !(instance_expr is IMemoryLocation))) {
+ if (!FieldInfo.IsStatic && (InstanceExpression.Type.IsValueType && !(InstanceExpression is IMemoryLocation))) {
// FIXME: Provide better error reporting.
Error (1612, "Cannot modify expression because it is not a variable.");
return null;
}
- if (!FieldInfo.IsInitOnly)
- return this;
-
FieldBase fb = TypeManager.GetField (FieldInfo);
if (fb != null)
fb.SetAssigned ();
+ if (!FieldInfo.IsInitOnly)
+ return this;
+
//
// InitOnly fields can only be assigned in constructors
//
public bool VerifyFixed (bool is_expression)
{
- IVariable variable = instance_expr as IVariable;
+ IVariable variable = InstanceExpression as IVariable;
if ((variable == null) || !variable.VerifyFixed (true))
return false;
if ((f.ModFlags & Modifiers.VOLATILE) != 0)
is_volatile = true;
- f.status |= Field.Status.USED;
+ f.SetMemberIsUsed ();
}
}
void EmitInstance (EmitContext ec)
{
- //
- // In case it escapes StaticMemberCheck due to IdenticalTypeAndName.
- // This happens in cases like 'string String', 'int Int32', etc.
- // where the "IdenticalTypeAndName" mechanism is fooled.
- //
- if (instance_expr == null) {
- SimpleName.Error_ObjectRefRequired (ec, loc, FieldInfo.Name);
- return;
- }
-
- if (instance_expr.Type.IsValueType) {
- if (instance_expr is IMemoryLocation) {
- ((IMemoryLocation) instance_expr).AddressOf (ec, AddressOp.LoadStore);
+ if (InstanceExpression.Type.IsValueType) {
+ if (InstanceExpression is IMemoryLocation) {
+ ((IMemoryLocation) InstanceExpression).AddressOf (ec, AddressOp.LoadStore);
} else {
- LocalTemporary t = new LocalTemporary (ec, instance_expr.Type);
- instance_expr.Emit (ec);
+ LocalTemporary t = new LocalTemporary (ec, InstanceExpression.Type);
+ InstanceExpression.Emit (ec);
t.Store (ec);
t.AddressOf (ec, AddressOp.Store);
}
} else
- instance_expr.Emit (ec);
+ InstanceExpression.Emit (ec);
}
public override void Emit (EmitContext ec)
if ((mode & AddressOp.Store) != 0)
f.status |= Field.Status.ASSIGNED;
if ((mode & AddressOp.Load) != 0)
- f.status |= Field.Status.USED;
+ f.SetMemberIsUsed ();
}
}
/// This is not an LValue because we need to re-write the expression, we
/// can not take data from the stack and store it.
/// </summary>
- public class PropertyExpr : ExpressionStatement, IAssignMethod, IMemberExpr {
+ public class PropertyExpr : MemberExpr, IAssignMethod {
public readonly PropertyInfo PropertyInfo;
//
public bool IsBase;
MethodInfo getter, setter;
bool is_static;
+
+ bool resolved;
- Expression instance_expr;
LocalTemporary temp;
bool prepared;
ResolveAccessors (ec);
}
- public string Name {
+ public override string Name {
get {
return PropertyInfo.Name;
}
}
- public bool IsInstance {
+ public override bool IsInstance {
get {
return !is_static;
}
}
- public bool IsStatic {
+ public override bool IsStatic {
get {
return is_static;
}
}
- public Type DeclaringType {
+ public override Type DeclaringType {
get {
return PropertyInfo.DeclaringType;
}
}
- //
- // The instance expression associated with this expression
- //
- public Expression InstanceExpression {
- set {
- instance_expr = value;
- }
-
- get {
- return instance_expr;
- }
- }
-
public bool VerifyAssignable ()
{
if (setter == null) {
FindAccessors (ec.ContainerType);
if (getter != null) {
+ IMethodData md = TypeManager.GetMethod (getter);
+ if (md != null)
+ md.SetMemberIsUsed ();
+
AccessorTable [getter] = PropertyInfo;
is_static = getter.IsStatic;
}
if (setter != null) {
+ IMethodData md = TypeManager.GetMethod (setter);
+ if (md != null)
+ md.SetMemberIsUsed ();
+
AccessorTable [setter] = PropertyInfo;
is_static = setter.IsStatic;
}
bool InstanceResolve (EmitContext ec, bool must_do_cs1540_check)
{
- if ((instance_expr == null) && ec.IsStatic && !is_static) {
+ if ((InstanceExpression == null) && ec.IsStatic && !is_static) {
SimpleName.Error_ObjectRefRequired (ec, loc, PropertyInfo.Name);
return false;
}
- if (instance_expr != null) {
- instance_expr = instance_expr.DoResolve (ec);
- if (instance_expr == null)
+ if (!IsInstance || InstanceExpression == EmptyExpression.Null)
+ InstanceExpression = null;
+
+ if (InstanceExpression != null) {
+ InstanceExpression = InstanceExpression.DoResolve (ec);
+ if (InstanceExpression == null)
return false;
- instance_expr.CheckMarshallByRefAccess (ec.ContainerType);
+ InstanceExpression.CheckMarshallByRefAccess (ec.ContainerType);
}
- if (must_do_cs1540_check && (instance_expr != null)) {
- if ((instance_expr.Type != ec.ContainerType) &&
- ec.ContainerType.IsSubclassOf (instance_expr.Type)) {
+ if (must_do_cs1540_check && (InstanceExpression != null)) {
+ if ((InstanceExpression.Type != ec.ContainerType) &&
+ ec.ContainerType.IsSubclassOf (InstanceExpression.Type)) {
Report.Error (1540, loc, "Cannot access protected member `" +
PropertyInfo.DeclaringType + "." + PropertyInfo.Name +
"' via a qualifier of type `" +
- TypeManager.CSharpName (instance_expr.Type) +
+ TypeManager.CSharpName (InstanceExpression.Type) +
"'; the qualifier must be of type `" +
TypeManager.CSharpName (ec.ContainerType) +
"' (or derived from it)");
override public Expression DoResolve (EmitContext ec)
{
+ if (resolved) {
+ Report.Debug ("Double resolve of " + Name);
+ return this;
+ }
+
if (getter != null){
if (TypeManager.GetArgumentTypes (getter).Length != 0){
Report.Error (
//
if (setter == null)
return null;
-
- Report.Error (154, loc,
- "The property `" + PropertyInfo.Name +
- "' can not be used in " +
- "this context because it lacks a get accessor");
- return null;
+
+ if (InstanceExpression != EmptyExpression.Null) {
+ Report.Error (154, loc,
+ "The property `" + PropertyInfo.Name +
+ "' can not be used in " +
+ "this context because it lacks a get accessor");
+ return null;
+ }
}
- bool must_do_cs1540_check;
- if (!IsAccessorAccessible (ec.ContainerType, getter, out must_do_cs1540_check)) {
+ bool must_do_cs1540_check = false;
+ if (getter != null &&
+ !IsAccessorAccessible (ec.ContainerType, getter, out must_do_cs1540_check)) {
PropertyBase.PropertyMethod pm = TypeManager.GetMethod (getter) as PropertyBase.PropertyMethod;
if (pm != null && pm.HasCustomAccessModifier) {
Report.SymbolRelatedToPreviousError (pm);
return null;
}
+ resolved = true;
+
return this;
}
//
// Check that we are not making changes to a temporary memory location
//
- if (instance_expr != null && instance_expr.Type.IsValueType && !(instance_expr is IMemoryLocation)) {
+ if (InstanceExpression != null && InstanceExpression.Type.IsValueType && !(InstanceExpression is IMemoryLocation)) {
// FIXME: Provide better error reporting.
Error (1612, "Cannot modify expression because it is not a variable.");
return null;
if (is_static)
return;
- //
- // In case it escapes StaticMemberCheck due to IdenticalTypeAndName.
- // This happens in cases like 'string String', 'int Int32', etc.
- // where the "IdenticalTypeAndName" mechanism is fooled.
- //
- if (instance_expr == null) {
- SimpleName.Error_ObjectRefRequired (ec, loc, PropertyInfo.Name);
- return;
- }
-
- if (instance_expr.Type.IsValueType) {
- if (instance_expr is IMemoryLocation) {
- ((IMemoryLocation) instance_expr).AddressOf (ec, AddressOp.LoadStore);
+ if (InstanceExpression.Type.IsValueType) {
+ if (InstanceExpression is IMemoryLocation) {
+ ((IMemoryLocation) InstanceExpression).AddressOf (ec, AddressOp.LoadStore);
} else {
- LocalTemporary t = new LocalTemporary (ec, instance_expr.Type);
- instance_expr.Emit (ec);
+ LocalTemporary t = new LocalTemporary (ec, InstanceExpression.Type);
+ InstanceExpression.Emit (ec);
t.Store (ec);
t.AddressOf (ec, AddressOp.Store);
}
} else
- instance_expr.Emit (ec);
+ InstanceExpression.Emit (ec);
if (prepared)
ec.ig.Emit (OpCodes.Dup);
//
if ((getter == TypeManager.system_int_array_get_length) ||
(getter == TypeManager.int_array_get_length)){
- Type iet = instance_expr.Type;
+ Type iet = InstanceExpression.Type;
//
// System.Array.Length can be called, but the Type does not
if (temp != null)
temp.Emit (ec);
}
-
- override public void EmitStatement (EmitContext ec)
- {
- Emit (ec);
- ec.ig.Emit (OpCodes.Pop);
- }
}
/// <summary>
/// Fully resolved expression that evaluates to an Event
/// </summary>
- public class EventExpr : Expression, IMemberExpr {
+ public class EventExpr : MemberExpr {
public readonly EventInfo EventInfo;
- Expression instance_expr;
bool is_static;
MethodInfo add_accessor, remove_accessor;
type = EventInfo.EventHandlerType;
}
- public string Name {
+ public override string Name {
get {
return EventInfo.Name;
}
}
- public bool IsInstance {
+ public override bool IsInstance {
get {
return !is_static;
}
}
- public bool IsStatic {
+ public override bool IsStatic {
get {
return is_static;
}
}
- public Type DeclaringType {
+ public override Type DeclaringType {
get {
return EventInfo.DeclaringType;
}
}
- public Expression InstanceExpression {
- get {
- return instance_expr;
- }
+ public override Expression ResolveMemberAccess (EmitContext ec, Expression left, Location loc,
+ SimpleName original)
+ {
+ //
+ // If the event is local to this class, we transform ourselves into a FieldExpr
+ //
- set {
- instance_expr = value;
+ if (EventInfo.DeclaringType == ec.ContainerType ||
+ TypeManager.IsNestedChildOf(ec.ContainerType, EventInfo.DeclaringType)) {
+ MemberInfo mi = TypeManager.GetPrivateFieldOfEvent (EventInfo);
+
+ if (mi != null) {
+ MemberExpr ml = (MemberExpr) ExprClassFromMemberInfo (ec, mi, loc);
+
+ if (ml == null) {
+ Report.Error (-200, loc, "Internal error!!");
+ return null;
+ }
+
+ InstanceExpression = null;
+
+ return ml.ResolveMemberAccess (ec, left, loc, original);
+ }
}
+
+ return base.ResolveMemberAccess (ec, left, loc, original);
}
+
bool InstanceResolve (EmitContext ec, bool must_do_cs1540_check)
{
- if ((instance_expr == null) && ec.IsStatic && !is_static) {
+ if ((InstanceExpression == null) && ec.IsStatic && !is_static) {
SimpleName.Error_ObjectRefRequired (ec, loc, EventInfo.Name);
return false;
}
- if (instance_expr != null) {
- instance_expr = instance_expr.DoResolve (ec);
- if (instance_expr == null)
+ if (!IsInstance || InstanceExpression == EmptyExpression.Null)
+ InstanceExpression = null;
+
+ if (InstanceExpression != null) {
+ InstanceExpression = InstanceExpression.DoResolve (ec);
+ if (InstanceExpression == null)
return false;
}
// This is using the same mechanism as the CS1540 check in PropertyExpr.
// However, in the Event case, we reported a CS0122 instead.
//
- if (must_do_cs1540_check && (instance_expr != null)) {
- if ((instance_expr.Type != ec.ContainerType) &&
- ec.ContainerType.IsSubclassOf (instance_expr.Type)) {
+ if (must_do_cs1540_check && (InstanceExpression != null)) {
+ if ((InstanceExpression.Type != ec.ContainerType) &&
+ ec.ContainerType.IsSubclassOf (InstanceExpression.Type)) {
Report.Error (122, loc, "'{0}' is inaccessible due to its protection level",
DeclaringType.Name + "." + EventInfo.Name);
public override Expression DoResolve (EmitContext ec)
{
- if (instance_expr != null) {
- instance_expr = instance_expr.DoResolve (ec);
- if (instance_expr == null)
+ if (!IsInstance)
+ InstanceExpression = null;
+
+ if (InstanceExpression != null) {
+ InstanceExpression = InstanceExpression.DoResolve (ec);
+ if (InstanceExpression == null)
return null;
}
bool must_do_cs1540_check;
- if (!(IsAccessorAccessible (ec.ContainerType, add_accessor, out must_do_cs1540_check)
- && IsAccessorAccessible (ec.ContainerType, remove_accessor, out must_do_cs1540_check))) {
+ if (!(IsAccessorAccessible (ec.ContainerType, add_accessor, out must_do_cs1540_check) &&
+ IsAccessorAccessible (ec.ContainerType, remove_accessor, out must_do_cs1540_check))) {
Report.Error (122, loc, "'{0}' is inaccessible due to its protection level",
DeclaringType.Name + "." + EventInfo.Name);
public override void Emit (EmitContext ec)
{
- if (instance_expr is This)
+ if (InstanceExpression is This)
Report.Error (79, loc, "The event `{0}' can only appear on the left hand side of += or -=, try calling the actual delegate", Name);
else
Report.Error (70, loc, "The event `{0}' can only appear on the left hand side of += or -= "+
if (source_del.IsAddition)
Invocation.EmitCall (
- ec, false, IsStatic, instance_expr, add_accessor, args, loc);
+ ec, false, IsStatic, InstanceExpression, add_accessor, args, loc);
else
Invocation.EmitCall (
- ec, false, IsStatic, instance_expr, remove_accessor, args, loc);
+ ec, false, IsStatic, InstanceExpression, remove_accessor, args, loc);
}
}
}
projects / mono.git / blobdiff