public override void Emit (EmitContext ec)
{
if (args != null)
- Invocation.EmitArguments (ec, mi, args);
+ Invocation.EmitArguments (ec, mi, args, false, null);
ec.ig.Emit (OpCodes.Call, mi);
return;
}
- static public Expression MakeSimpleCall (EmitContext ec, MethodGroupExpr mg,
+ static public StaticCallExpr MakeSimpleCall (EmitContext ec, MethodGroupExpr mg,
Expression e, Location loc)
{
ArrayList args;
if (TypeManager.TypeToCoreType (type) != TypeManager.void_type)
ec.ig.Emit (OpCodes.Pop);
}
+
+ public MethodInfo Method {
+ get { return mi; }
+ }
}
public class ParenthesizedExpression : Expression
Expression ResolveOperator (EmitContext ec)
{
- Type expr_type = Expr.Type;
+ //
+ // Step 1: Default operations on CLI native types.
+ //
+
+ // Attempt to use a constant folding operation.
+ if (Expr is Constant){
+ Expression result;
+
+ if (Reduce (ec, (Constant) Expr, out result))
+ return result;
+ }
//
- // Step 1: Perform Operator Overload location
+ // Step 2: Perform Operator Overload location
//
+ Type expr_type = Expr.Type;
Expression mg;
string op_name;
if (expr_type == null)
return null;
- //
- // Step 2: Default operations on CLI native types.
- //
-
- // Attempt to use a constant folding operation.
- if (Expr is Constant){
- Expression result;
-
- if (Reduce (ec, (Constant) Expr, out result))
- return result;
- }
-
switch (Oper){
case Operator.LogicalNot:
if (expr_type != TypeManager.bool_type) {
return null;
}
+ LocalVariableReference lr = Expr as LocalVariableReference;
+ if (lr != null){
+ if (lr.local_info.IsCaptured){
+ AnonymousMethod.Error_AddressOfCapturedVar (lr.Name, loc);
+ return null;
+ }
+ lr.local_info.AddressTaken = true;
+ lr.local_info.Used = true;
+ }
+
// According to the specs, a variable is considered definitely assigned if you take
// its address.
if ((variable != null) && (variable.VariableInfo != null))
public class Indirection : Expression, IMemoryLocation, IAssignMethod {
Expression expr;
LocalTemporary temporary;
- bool have_temporary;
+ bool prepared;
public Indirection (Expression expr, Location l)
{
public override void Emit (EmitContext ec)
{
- ILGenerator ig = ec.ig;
-
- if (temporary != null){
- if (have_temporary) {
- temporary.Emit (ec);
- } else {
+ if (!prepared)
expr.Emit (ec);
+
+ LoadFromPtr (ec.ig, Type);
+ }
+
+ public void Emit (EmitContext ec, bool leave_copy)
+ {
+ Emit (ec);
+ if (leave_copy) {
ec.ig.Emit (OpCodes.Dup);
+ temporary = new LocalTemporary (ec, expr.Type);
temporary.Store (ec);
- have_temporary = true;
- }
- } else
- expr.Emit (ec);
-
- LoadFromPtr (ig, Type);
+ }
}
- public void EmitAssign (EmitContext ec, Expression source)
+ public void EmitAssign (EmitContext ec, Expression source, bool leave_copy, bool prepare_for_load)
{
- if (temporary != null){
- if (have_temporary)
- temporary.Emit (ec);
- else {
- expr.Emit (ec);
- ec.ig.Emit (OpCodes.Dup);
- temporary.Store (ec);
- have_temporary = true;
- }
- } else
- expr.Emit (ec);
+ prepared = prepare_for_load;
+
+ expr.Emit (ec);
+
+ if (prepare_for_load)
+ ec.ig.Emit (OpCodes.Dup);
source.Emit (ec);
+ if (leave_copy) {
+ ec.ig.Emit (OpCodes.Dup);
+ temporary = new LocalTemporary (ec, expr.Type);
+ temporary.Store (ec);
+ }
+
StoreFromPtr (ec.ig, type);
+
+ if (temporary != null)
+ temporary.Emit (ec);
}
-
+
public void AddressOf (EmitContext ec, AddressOp Mode)
{
- if (temporary != null){
- if (have_temporary){
- temporary.Emit (ec);
- return;
- }
- expr.Emit (ec);
- ec.ig.Emit (OpCodes.Dup);
- temporary.Store (ec);
- have_temporary = true;
- } else
- expr.Emit (ec);
+ expr.Emit (ec);
}
public override Expression DoResolve (EmitContext ec)
//
return this;
}
-
- public new void CacheTemporaries (EmitContext ec)
- {
- temporary = new LocalTemporary (ec, expr.Type);
- }
-
+
public override string ToString ()
{
return "*(" + expr + ")";
}
Mode mode;
+ bool is_expr = false;
+ bool recurse = false;
+
Expression expr;
- LocalTemporary temp_storage;
//
// This is expensive for the simplest case.
//
- Expression method;
+ StaticCallExpr method;
public UnaryMutator (Mode m, Expression e, Location l)
{
} else if (expr.eclass == ExprClass.IndexerAccess){
IndexerAccess ia = (IndexerAccess) expr;
- temp_storage = new LocalTemporary (ec, expr.Type);
-
- expr = ia.ResolveLValue (ec, temp_storage);
+ expr = ia.ResolveLValue (ec, this);
if (expr == null)
return null;
return null;
} else {
- expr.Error_UnexpectedKind ("variable, indexer or property access");
+ expr.Error_UnexpectedKind ("variable, indexer or property access", loc);
return null;
}
}
}
-
- static EmptyExpression empty_expr;
void EmitCode (EmitContext ec, bool is_expr)
{
- ILGenerator ig = ec.ig;
- IAssignMethod ia = (IAssignMethod) expr;
- Type expr_type = expr.Type;
-
- ia.CacheTemporaries (ec);
+ recurse = true;
+ this.is_expr = is_expr;
+ ((IAssignMethod) expr).EmitAssign (ec, this, is_expr && (mode == Mode.PreIncrement || mode == Mode.PreDecrement), true);
+ }
+
+ public override void Emit (EmitContext ec)
+ {
//
- // NOTE: We should probably handle three cases:
- //
- // * method invocation required.
- // * direct stack manipulation possible
- // * the object requires an "instance" field
+ // We use recurse to allow ourselfs to be the source
+ // of an assignment. This little hack prevents us from
+ // having to allocate another expression
//
- if (temp_storage == null){
- //
- // Temporary improvement: if we are dealing with something that does
- // not require complicated instance setup, avoid using a temporary
- //
- // For now: only localvariables when not remapped
- //
-
- if (method == null &&
- ((expr is LocalVariableReference) ||(expr is FieldExpr && ((FieldExpr) expr).FieldInfo.IsStatic))){
- if (empty_expr == null)
- empty_expr = new EmptyExpression ();
-
- switch (mode){
- case Mode.PreIncrement:
- case Mode.PreDecrement:
- expr.Emit (ec);
-
- LoadOneAndEmitOp (ec, expr_type);
- if (is_expr)
- ig.Emit (OpCodes.Dup);
- ia.EmitAssign (ec, empty_expr);
- break;
-
- case Mode.PostIncrement:
- case Mode.PostDecrement:
- expr.Emit (ec);
- if (is_expr)
- ig.Emit (OpCodes.Dup);
-
- LoadOneAndEmitOp (ec, expr_type);
- ia.EmitAssign (ec, empty_expr);
- break;
- }
- return;
- }
- temp_storage = new LocalTemporary (ec, expr_type);
+ if (recurse) {
+ ((IAssignMethod) expr).Emit (ec, is_expr && (mode == Mode.PostIncrement || mode == Mode.PostDecrement));
+ if (method == null)
+ LoadOneAndEmitOp (ec, expr.Type);
+ else
+ ec.ig.Emit (OpCodes.Call, method.Method);
+ recurse = false;
+ return;
}
- switch (mode){
- case Mode.PreIncrement:
- case Mode.PreDecrement:
- if (method == null){
- expr.Emit (ec);
-
- LoadOneAndEmitOp (ec, expr_type);
- } else
- method.Emit (ec);
-
- temp_storage.Store (ec);
- ia.EmitAssign (ec, temp_storage);
- if (is_expr)
- temp_storage.Emit (ec);
- break;
-
- case Mode.PostIncrement:
- case Mode.PostDecrement:
- if (is_expr)
- expr.Emit (ec);
-
- if (method == null){
- if (!is_expr)
- expr.Emit (ec);
- else
- ig.Emit (OpCodes.Dup);
-
- LoadOneAndEmitOp (ec, expr_type);
- } else {
- method.Emit (ec);
- }
-
- temp_storage.Store (ec);
- ia.EmitAssign (ec, temp_storage);
- break;
- }
-
- temp_storage.Release (ec);
- }
-
- public override void Emit (EmitContext ec)
- {
EmitCode (ec, true);
-
}
public override void EmitStatement (EmitContext ec)
{
EmitCode (ec, false);
}
-
}
/// <summary>
/// size.
/// </remarks>
public abstract class Probe : Expression {
- public readonly Expression ProbeType;
+ public Expression ProbeType;
protected Expression expr;
protected Type probe_type;
public override Expression DoResolve (EmitContext ec)
{
- probe_type = ec.DeclSpace.ResolveType (ProbeType, false, loc);
-
- if (probe_type == null)
+ TypeExpr texpr = ProbeType.ResolveAsTypeTerminal (ec);
+ if (texpr == null)
return null;
+ probe_type = texpr.Type;
+
+ CheckObsoleteAttribute (probe_type);
expr = expr.Resolve (ec);
if (expr == null)
return null;
+ if (expr.Type.IsPointer) {
+ Report.Error (244, loc, "\"is\" or \"as\" are not valid on pointer types");
+ return null;
+ }
return this;
}
}
warning_always_matches = true;
} else if (Convert.ExplicitReferenceConversionExists (etype, probe_type)){
+ if (etype.IsGenericParameter)
+ expr = new BoxedCast (expr, etype);
+
//
// Second case: explicit reference convresion
//
warning_never_matches = true;
}
- if (RootContext.WarningLevel >= 1){
- if (warning_always_matches)
- Warning (183, "The expression is always of type `" +
- TypeManager.CSharpName (probe_type) + "'");
- else if (warning_never_matches){
- if (!(probe_type.IsInterface || expr.Type.IsInterface))
- Warning (184,
- "The expression is never of type `" +
- TypeManager.CSharpName (probe_type) + "'");
- }
+ if (warning_always_matches)
+ Warning (183, "The given expression is always of the provided ('{0}') type", TypeManager.CSharpName (probe_type));
+ else if (warning_never_matches){
+ if (!(probe_type.IsInterface || expr.Type.IsInterface))
+ Warning (184, "The given expression is never of the provided ('{0}') type", TypeManager.CSharpName (probe_type));
}
return this;
- }
+ }
}
/// <summary>
}
if (Convert.ExplicitReferenceConversionExists (etype, probe_type)){
+ if (etype.IsGenericParameter)
+ expr = new BoxedCast (expr, etype);
+
do_isinst = true;
return this;
}
if (expr == null)
return null;
- type = ec.DeclSpace.ResolveType (target_type, false, Location);
+ TypeExpr target = target_type.ResolveAsTypeTerminal (ec);
+ if (target == null)
+ return null;
- if (type == null)
+ type = target.Type;
+
+ CheckObsoleteAttribute (type);
+
+ if (type.IsAbstract && type.IsSealed) {
+ Report.Error (716, loc, "Cannot convert to static type '{0}'", TypeManager.CSharpName (type));
return null;
+ }
eclass = ExprClass.Value;
return e;
}
+ if (type.IsPointer && !ec.InUnsafe) {
+ UnsafeError (loc);
+ return null;
+ }
expr = Convert.ExplicitConversion (ec, expr, type, loc);
return expr;
}
(other == TypeManager.int32_type) ||
(other == TypeManager.int64_type))
Error_OperatorAmbiguous (loc, oper, l, r);
+ else {
+ left = ForceConversion (ec, left, TypeManager.uint64_type);
+ right = ForceConversion (ec, right, TypeManager.uint64_type);
+ }
type = TypeManager.uint64_type;
} else if (IsOfType (ec, l, r, TypeManager.int64_type, check_user_conv)){
//
Type l = left.Type;
Type r = right.Type;
- bool overload_failed = false;
-
//
// Special cases: string or type parameter comapred to null
//
if (oper == Operator.Equality || oper == Operator.Inequality){
- if ((l == TypeManager.string_type && (right is NullLiteral)) ||
- (r == TypeManager.string_type && (left is NullLiteral))){
+ if ((!TypeManager.IsValueType (l) && r == TypeManager.null_type) ||
+ (!TypeManager.IsValueType (r) && l == TypeManager.null_type)) {
Type = TypeManager.bool_type;
return this;
MethodInfo mi = (MethodInfo) method;
return new BinaryMethod (mi.ReturnType, method, args);
- } else {
- overload_failed = true;
}
}
}
//
// Also, a standard conversion must exist from either one
//
- if (!(Convert.ImplicitStandardConversionExists (left, r) ||
- Convert.ImplicitStandardConversionExists (right, l))){
+ if (!(Convert.ImplicitStandardConversionExists (ec, left, r) ||
+ Convert.ImplicitStandardConversionExists (ec, right, l))){
Error_OperatorCannotBeApplied ();
return null;
}
//
if (oper == Operator.Addition || oper == Operator.Subtraction) {
if (TypeManager.IsDelegateType (l)){
- if (right.eclass == ExprClass.MethodGroup && RootContext.V2){
+ if (((right.eclass == ExprClass.MethodGroup) ||
+ (r == TypeManager.anonymous_method_type))){
+ if ((RootContext.Version != LanguageVersion.ISO_1)){
Expression tmp = Convert.ImplicitConversionRequired (ec, right, l, loc);
if (tmp == null)
return null;
right = tmp;
r = right.Type;
}
+ }
if (TypeManager.IsDelegateType (r)){
MethodInfo method;
if (r == l)
return new PointerArithmetic (
false, left, right, TypeManager.int64_type,
- loc);
+ loc).Resolve (ec);
} else {
Expression t = Make32or64 (ec, right);
if (t != null)
- return new PointerArithmetic (oper == Operator.Addition, left, t, l, loc);
+ return new PointerArithmetic (oper == Operator.Addition, left, t, l, loc).Resolve (ec);
}
} else if (r.IsPointer && oper == Operator.Addition){
Expression t = Make32or64 (ec, left);
if (t != null)
- return new PointerArithmetic (true, right, t, r, loc);
+ return new PointerArithmetic (true, right, t, r, loc).Resolve (ec);
}
}
}
}
- //
- // We are dealing with numbers
- //
- if (overload_failed){
- Error_OperatorCannotBeApplied ();
- return null;
- }
-
//
// This will leave left or right set to null if there is an error
//
}
} else
left = left.Resolve (ec);
- right = right.Resolve (ec);
- if (left == null || right == null)
+ if (left == null)
+ return null;
+
+ Constant lc = left as Constant;
+ if (lc != null && lc.Type == TypeManager.bool_type &&
+ ((oper == Operator.LogicalAnd && (bool)lc.GetValue () == false) ||
+ (oper == Operator.LogicalOr && (bool)lc.GetValue () == true))) {
+
+ // TODO: make a sence to resolve unreachable expression as we do for statement
+ Report.Warning (429, 4, loc, "Unreachable expression code detected");
+ return left;
+ }
+
+ right = right.Resolve (ec);
+ if (right == null)
return null;
eclass = ExprClass.Value;
Constant rc = right as Constant;
- Constant lc = left as Constant;
-
if (rc != null & lc != null){
Expression e = ConstantFold.BinaryFold (
ec, oper, lc, rc, loc);
ILGenerator ig = ec.ig;
if (Arguments != null)
- Invocation.EmitArguments (ec, method, Arguments);
+ Invocation.EmitArguments (ec, method, Arguments, false, null);
if (method is MethodInfo)
ig.Emit (OpCodes.Call, (MethodInfo) method);
public class StringConcat : Expression {
ArrayList operands;
bool invalid = false;
-
+ bool emit_conv_done = false;
+ //
+ // Are we also concating objects?
+ //
+ bool is_strings_only = true;
public StringConcat (EmitContext ec, Location loc, Expression left, Expression right)
{
{
MethodInfo concat_method = null;
- //
- // Are we also concating objects?
- //
- bool is_strings_only = true;
-
//
// Do conversion to arguments; check for strings only
//
+
+ // This can get called multiple times, so we have to deal with that.
+ if (!emit_conv_done) {
+ emit_conv_done = true;
for (int i = 0; i < operands.Count; i ++) {
Expression e = (Expression) operands [i];
is_strings_only &= e.Type == TypeManager.string_type;
// method might look at the type of this expression, see it is a
// string and emit a string [] when we want an object [];
- e = Convert.ImplicitConversion (ec, e, TypeManager.object_type, loc);
+ e = new EmptyCast (e, TypeManager.object_type);
}
operands [i] = new Argument (e, Argument.AType.Expression);
}
+ }
//
// Find the right method
break;
}
- Invocation.EmitArguments (ec, concat_method, operands);
+ Invocation.EmitArguments (ec, concat_method, operands, false, null);
ec.ig.Emit (OpCodes.Call, concat_method);
}
}
{
ILGenerator ig = ec.ig;
- Invocation.EmitArguments (ec, method, args);
+ Invocation.EmitArguments (ec, method, args, false, null);
ig.Emit (OpCodes.Call, (MethodInfo) method);
ig.Emit (OpCodes.Castclass, type);
Label false_target = ig.DefineLabel ();
Label end_target = ig.DefineLabel ();
- ig.Emit (OpCodes.Nop);
-
left.Emit (ec);
left_temp.Store (ec);
ig.MarkLabel (false_target);
op.Emit (ec);
ig.MarkLabel (end_target);
-
- ig.Emit (OpCodes.Nop);
}
}
public PointerArithmetic (bool is_addition, Expression l, Expression r, Type t, Location loc)
{
type = t;
- eclass = ExprClass.Variable;
this.loc = loc;
left = l;
right = r;
public override Expression DoResolve (EmitContext ec)
{
- //
- // We are born fully resolved
- //
+ eclass = ExprClass.Variable;
+
+ if (left.Type == TypeManager.void_ptr_type) {
+ Error (242, "The operation in question is undefined on void pointers");
+ return null;
+ }
+
return this;
}
{
Type op_type = left.Type;
ILGenerator ig = ec.ig;
- int size = GetTypeSize (TypeManager.GetElementType (op_type));
+ Type element = TypeManager.GetElementType (op_type);
+ int size = GetTypeSize (element);
Type rtype = right.Type;
if (rtype.IsPointer){
if (size != 1){
if (size == 0)
- ig.Emit (OpCodes.Sizeof, op_type);
+ ig.Emit (OpCodes.Sizeof, element);
else
IntLiteral.EmitInt (ig, size);
ig.Emit (OpCodes.Div);
right.Emit (ec);
if (size != 1){
if (size == 0)
- ig.Emit (OpCodes.Sizeof, op_type);
+ ig.Emit (OpCodes.Sizeof, element);
else
IntLiteral.EmitInt (ig, size);
if (rtype == TypeManager.int64_type)
else if (rtype == TypeManager.uint64_type)
ig.Emit (OpCodes.Conv_U8);
ig.Emit (OpCodes.Mul);
- ig.Emit (OpCodes.Conv_I);
}
+
+ if (rtype == TypeManager.int64_type || rtype == TypeManager.uint64_type)
+ ig.Emit (OpCodes.Conv_I);
+
if (is_add)
ig.Emit (OpCodes.Add);
else
Type true_type = trueExpr.Type;
Type false_type = falseExpr.Type;
- if (trueExpr is NullLiteral){
- type = false_type;
- return this;
- } else if (falseExpr is NullLiteral){
- type = true_type;
- return this;
- }
-
//
// First, if an implicit conversion exists from trueExpr
// to falseExpr, then the result type is of type falseExpr.Type
public class LocalVariableReference : Expression, IAssignMethod, IMemoryLocation, IVariable {
public readonly string Name;
public readonly Block Block;
- LocalInfo local_info;
+ public LocalInfo local_info;
bool is_readonly;
+ bool prepared;
+ LocalTemporary temp;
public LocalVariableReference (Block block, string name, Location l)
{
eclass = ExprClass.Variable;
}
+ //
// Setting `is_readonly' to false will allow you to create a writable
// reference to a read-only variable. This is used by foreach and using.
+ //
public LocalVariableReference (Block block, string name, Location l,
LocalInfo local_info, bool is_readonly)
: this (block, name, l)
}
public VariableInfo VariableInfo {
- get { return local_info.VariableInfo; }
+ get {
+ return local_info.VariableInfo;
+ }
}
public bool IsReadOnly {
}
}
- protected void DoResolveBase (EmitContext ec)
+ protected Expression DoResolveBase (EmitContext ec, Expression lvalue_right_side)
{
if (local_info == null) {
local_info = Block.GetLocalInfo (Name);
+
+ // is out param
+ if (lvalue_right_side == EmptyExpression.Null)
+ local_info.Used = true;
+
is_readonly = local_info.ReadOnly;
}
type = local_info.VariableType;
-#if false
- if (ec.InAnonymousMethod)
- Block.LiftVariable (local_info);
-#endif
+
+ VariableInfo variable_info = local_info.VariableInfo;
+ if (lvalue_right_side != null){
+ if (is_readonly){
+ Error (1604, "cannot assign to `" + Name + "' because it is readonly");
+ return null;
+ }
+
+ if (variable_info != null)
+ variable_info.SetAssigned (ec);
}
- protected Expression DoResolve (EmitContext ec, bool is_lvalue)
- {
Expression e = Block.GetConstantExpression (Name);
if (e != null) {
local_info.Used = true;
eclass = ExprClass.Value;
- return e;
+ return e.Resolve (ec);
}
- VariableInfo variable_info = local_info.VariableInfo;
if ((variable_info != null) && !variable_info.IsAssigned (ec, loc))
return null;
- if (!is_lvalue)
+ if (lvalue_right_side == null)
local_info.Used = true;
- if (local_info.LocalBuilder == null)
- return ec.RemapLocal (local_info);
+ if (ec.CurrentAnonymousMethod != null){
+ //
+ // If we are referencing a variable from the external block
+ // flag it for capturing
+ //
+ if (local_info.Block.Toplevel != ec.CurrentBlock.Toplevel){
+ if (local_info.AddressTaken){
+ AnonymousMethod.Error_AddressOfCapturedVar (local_info.Name, loc);
+ return null;
+ }
+ ec.CaptureVariable (local_info);
+ }
+ }
return this;
}
public override Expression DoResolve (EmitContext ec)
{
- DoResolveBase (ec);
-
- return DoResolve (ec, false);
+ return DoResolveBase (ec, null);
}
override public Expression DoResolveLValue (EmitContext ec, Expression right_side)
{
- DoResolveBase (ec);
-
- VariableInfo variable_info = local_info.VariableInfo;
- if (variable_info != null)
- variable_info.SetAssigned (ec);
+ Expression ret = DoResolveBase (ec, right_side);
+ if (ret != null)
+ CheckObsoleteAttribute (ret.Type);
- Expression e = DoResolve (ec, true);
-
- if (e == null)
- return null;
-
- if (is_readonly){
- Error (1604, "cannot assign to `" + Name + "' because it is readonly");
- return null;
- }
-
- if (local_info.LocalBuilder == null)
- return ec.RemapLocalLValue (local_info, right_side);
-
- return this;
+ return ret;
}
public bool VerifyFixed (bool is_expression)
{
ILGenerator ig = ec.ig;
+ if (local_info.FieldBuilder == null){
+ //
+ // A local variable on the local CLR stack
+ //
ig.Emit (OpCodes.Ldloc, local_info.LocalBuilder);
+ } else {
+ //
+ // A local variable captured by anonymous methods.
+ //
+ if (!prepared)
+ ec.EmitCapturedVariableInstance (local_info);
+
+ ig.Emit (OpCodes.Ldfld, local_info.FieldBuilder);
+ }
+ }
+
+ public void Emit (EmitContext ec, bool leave_copy)
+ {
+ Emit (ec);
+ if (leave_copy){
+ ec.ig.Emit (OpCodes.Dup);
+ if (local_info.FieldBuilder != null){
+ temp = new LocalTemporary (ec, Type);
+ temp.Store (ec);
+ }
+ }
}
- public void EmitAssign (EmitContext ec, Expression source)
+ public void EmitAssign (EmitContext ec, Expression source, bool leave_copy, bool prepare_for_load)
{
ILGenerator ig = ec.ig;
+ prepared = prepare_for_load;
+ if (local_info.FieldBuilder == null){
+ //
+ // A local variable on the local CLR stack
+ //
+ if (local_info.LocalBuilder == null)
+ throw new Exception ("This should not happen: both Field and Local are null");
+
source.Emit (ec);
- ig.Emit (OpCodes.Stloc, local_info.LocalBuilder);
+ if (leave_copy)
+ ec.ig.Emit (OpCodes.Dup);
+ ig.Emit (OpCodes.Stloc, local_info.LocalBuilder);
+ } else {
+ //
+ // A local variable captured by anonymous methods or itereators.
+ //
+ ec.EmitCapturedVariableInstance (local_info);
+
+ if (prepare_for_load)
+ ig.Emit (OpCodes.Dup);
+ source.Emit (ec);
+ if (leave_copy){
+ ig.Emit (OpCodes.Dup);
+ temp = new LocalTemporary (ec, Type);
+ temp.Store (ec);
+ }
+ ig.Emit (OpCodes.Stfld, local_info.FieldBuilder);
+ if (temp != null)
+ temp.Emit (ec);
+ }
}
public void AddressOf (EmitContext ec, AddressOp mode)
{
ILGenerator ig = ec.ig;
+ if (local_info.FieldBuilder == null){
+ //
+ // A local variable on the local CLR stack
+ //
ig.Emit (OpCodes.Ldloca, local_info.LocalBuilder);
- }
+ } else {
+ //
+ // A local variable captured by anonymous methods or iterators
+ //
+ ec.EmitCapturedVariableInstance (local_info);
+ ig.Emit (OpCodes.Ldflda, local_info.FieldBuilder);
+ }
+ }
public override string ToString ()
{
Block block;
VariableInfo vi;
public Parameter.Modifier mod;
- public bool is_ref, is_out;
+ public bool is_ref, is_out, prepared;
+
+ public bool IsOut {
+ get {
+ return is_out;
+ }
+ }
+
+ public bool IsRef {
+ get {
+ return is_ref;
+ }
+ }
+
+ LocalTemporary temp;
public ParameterReference (Parameters pars, Block block, int idx, string name, Location loc)
{
public bool IsAssigned (EmitContext ec, Location loc)
{
- if (!ec.DoFlowAnalysis || !is_out ||
- ec.CurrentBranching.IsAssigned (vi))
+ if (!ec.DoFlowAnalysis || !is_out || ec.CurrentBranching.IsAssigned (vi))
return true;
Report.Error (165, loc,
public bool IsFieldAssigned (EmitContext ec, string field_name, Location loc)
{
- if (!ec.DoFlowAnalysis || !is_out ||
- ec.CurrentBranching.IsFieldAssigned (vi, field_name))
+ if (!ec.DoFlowAnalysis || !is_out || ec.CurrentBranching.IsFieldAssigned (vi, field_name))
return true;
Report.Error (170, loc,
protected void DoResolveBase (EmitContext ec)
{
- type = pars.GetParameterInfo (ec.DeclSpace, idx, out mod);
+ type = pars.GetParameterInfo (ec, idx, out mod);
is_ref = (mod & Parameter.Modifier.ISBYREF) != 0;
is_out = (mod & Parameter.Modifier.OUT) != 0;
eclass = ExprClass.Variable;
if (is_out)
vi = block.ParameterMap [idx];
+
+ if (ec.CurrentAnonymousMethod != null){
+ if (is_ref){
+ Report.Error (1628, Location,
+ "Can not reference a ref or out parameter in an anonymous method");
+ return;
+ }
+
+ //
+ // If we are referencing the parameter from the external block
+ // flag it for capturing
+ //
+ //Console.WriteLine ("Is parameter `{0}' local? {1}", name, block.IsLocalParameter (name));
+ if (!block.IsLocalParameter (name)){
+ ec.CaptureParameter (name, type, idx);
+ }
+ }
}
//
arg_idx++;
EmitLdArg (ig, arg_idx);
+
+ //
+ // FIXME: Review for anonymous methods
+ //
}
public override void Emit (EmitContext ec)
{
- ILGenerator ig = ec.ig;
+ if (ec.HaveCaptureInfo && ec.IsParameterCaptured (name)){
+ ec.EmitParameter (name);
+ return;
+ }
+ Emit (ec, false);
+ }
+
+ public void Emit (EmitContext ec, bool leave_copy)
+ {
+ ILGenerator ig = ec.ig;
int arg_idx = idx;
if (!ec.IsStatic)
EmitLdArg (ig, arg_idx);
- if (!is_ref)
- return;
-
- //
- // If we are a reference, we loaded on the stack a pointer
- // Now lets load the real value
- //
- LoadFromPtr (ig, type);
+ if (is_ref) {
+ if (prepared)
+ ec.ig.Emit (OpCodes.Dup);
+
+ //
+ // If we are a reference, we loaded on the stack a pointer
+ // Now lets load the real value
+ //
+ LoadFromPtr (ig, type);
+ }
+
+ if (leave_copy) {
+ ec.ig.Emit (OpCodes.Dup);
+
+ if (is_ref) {
+ temp = new LocalTemporary (ec, type);
+ temp.Store (ec);
+ }
+ }
}
-
- public void EmitAssign (EmitContext ec, Expression source)
+
+ public void EmitAssign (EmitContext ec, Expression source, bool leave_copy, bool prepare_for_load)
{
+ if (ec.HaveCaptureInfo && ec.IsParameterCaptured (name)){
+ ec.EmitAssignParameter (name, source, leave_copy, prepare_for_load);
+ return;
+ }
+
ILGenerator ig = ec.ig;
-
int arg_idx = idx;
-
+
+ prepared = prepare_for_load;
+
if (!ec.IsStatic)
arg_idx++;
- if (is_ref)
+ if (is_ref && !prepared)
EmitLdArg (ig, arg_idx);
source.Emit (ec);
- if (is_ref)
+ if (leave_copy)
+ ec.ig.Emit (OpCodes.Dup);
+
+ if (is_ref) {
+ if (leave_copy) {
+ temp = new LocalTemporary (ec, type);
+ temp.Store (ec);
+ }
+
StoreFromPtr (ig, type);
- else {
+
+ if (temp != null)
+ temp.Emit (ec);
+ } else {
if (arg_idx <= 255)
ig.Emit (OpCodes.Starg_S, (byte) arg_idx);
else
public void AddressOf (EmitContext ec, AddressOp mode)
{
+ if (ec.HaveCaptureInfo && ec.IsParameterCaptured (name)){
+ ec.EmitAddressOfParameter (name);
+ return;
+ }
+
int arg_idx = idx;
if (!ec.IsStatic)
public enum AType : byte {
Expression,
Ref,
- Out
+ Out,
+ ArgList
};
public readonly AType ArgType;
this.ArgType = type;
}
+ public Argument (Expression expr)
+ {
+ this.Expr = expr;
+ this.ArgType = AType.Expression;
+ }
+
public Type Type {
get {
if (ArgType == AType.Ref || ArgType == AType.Out)
public static string FullDesc (Argument a)
{
+ if (a.ArgType == AType.ArgList)
+ return "__arglist";
+
return (a.ArgType == AType.Ref ? "ref " :
(a.ArgType == AType.Out ? "out " : "")) +
TypeManager.CSharpName (a.Expr.Type);
{
ConstructedType ctype = Expr as ConstructedType;
if (ctype != null)
- Expr = ctype.GetMemberAccess (ec);
+ Expr = ctype.GetSimpleName (ec);
// FIXME: csc doesn't report any error if you try to use `ref' or
// `out' in a delegate creation expression.
if (Expr == null)
return false;
+ if (!ec.IsConstructor) {
+ FieldExpr fe = Expr as FieldExpr;
+ if (fe != null && fe.FieldInfo.IsInitOnly) {
+ if (fe.FieldInfo.IsStatic)
+ Report.Error (199, loc, "A static readonly field cannot be passed ref or out (except in a static constructor)");
+ else
+ Report.Error (192, loc, "A readonly field cannot be passed ref or out (except in a constructor)");
+ return false;
+ }
+ }
Expr = Expr.ResolveLValue (ec, Expr);
} else if (ArgType == AType.Out)
- Expr = Expr.ResolveLValue (ec, new EmptyExpression ());
+ Expr = Expr.ResolveLValue (ec, EmptyExpression.Null);
else
Expr = Expr.Resolve (ec);
if (instance.GetType () != typeof (This)){
if (fe.InstanceExpression.Type.IsSubclassOf (TypeManager.mbr_type)){
- Report.Error (197, loc,
- "Can not pass a type that derives from MarshalByRefObject with out or ref");
+ Report.SymbolRelatedToPreviousError (fe.InstanceExpression.Type);
+ Report.Error (197, loc, "Cannot pass '{0}' as ref or out or take its address because it is a member of a marshal-by-reference class",
+ fe.Name);
return false;
}
}
if (Expr is ParameterReference){
ParameterReference pr = (ParameterReference) Expr;
- if (pr.is_ref)
+ if (pr.IsRef)
pr.EmitLoad (ec);
else {
Expression expr;
MethodBase method = null;
- bool is_base;
static Hashtable method_parameter_cache;
/// <summary>
/// Determines "better conversion" as specified in 7.4.2.3
///
- /// Returns : 1 if a->p is better
- /// 0 if a->q or neither is better
+ /// Returns : p if a->p is better,
+ /// q if a->q is better,
+ /// null if neither is better
/// </summary>
- static int BetterConversion (EmitContext ec, Argument a, Type p, Type q, Location loc)
+ static Type BetterConversion (EmitContext ec, Argument a, Type p, Type q, Location loc)
{
- Type argument_type = a.Type;
+ Type argument_type = TypeManager.TypeToCoreType (a.Type);
Expression argument_expr = a.Expr;
+ // p = TypeManager.TypeToCoreType (p);
+ // q = TypeManager.TypeToCoreType (q);
+
if (argument_type == null)
throw new Exception ("Expression of type " + a.Expr +
" does not resolve its type");
+ if (p == null || q == null)
+ throw new InternalErrorException ("BetterConversion Got a null conversion");
+
+ if (p == q)
+ return null;
+
+ if (argument_expr is NullLiteral) {
//
- // This is a special case since csc behaves this way.
+ // If the argument is null and one of the types to compare is 'object' and
+ // the other is a reference type, we prefer the other.
//
- if (argument_expr is NullLiteral &&
- p == TypeManager.string_type &&
- q == TypeManager.object_type)
- return 1;
- else if (argument_expr is NullLiteral &&
- p == TypeManager.object_type &&
- q == TypeManager.string_type)
- return 0;
-
- //
- // csc behaves this way so we emulate it. Basically, if the argument
- // is null and one of the types to compare is 'object' and the other
- // is a reference type, we prefer the other.
- //
- // I can't find this anywhere in the spec but we can interpret this
- // to mean that null can be of any type you wish in such a context
- //
- if (p != null && q != null) {
- if (argument_expr is NullLiteral &&
- !p.IsValueType &&
- q == TypeManager.object_type)
- return 1;
- else if (argument_expr is NullLiteral &&
- !q.IsValueType &&
- p == TypeManager.object_type)
- return 0;
- }
-
- if (p == q)
- return 0;
+ // This follows from the usual rules:
+ // * There is an implicit conversion from 'null' to type 'object'
+ // * There is an implicit conversion from 'null' to any reference type
+ // * There is an implicit conversion from any reference type to type 'object'
+ // * There is no implicit conversion from type 'object' to other reference types
+ // => Conversion of 'null' to a reference type is better than conversion to 'object'
+ //
+ // FIXME: This probably isn't necessary, since the type of a NullLiteral is the
+ // null type. I think it used to be 'object' and thus needed a special
+ // case to avoid the immediately following two checks.
+ //
+ if (!p.IsValueType && q == TypeManager.object_type)
+ return p;
+ if (!q.IsValueType && p == TypeManager.object_type)
+ return q;
+ }
if (argument_type == p)
- return 1;
+ return p;
if (argument_type == q)
- return 0;
-
- //
- // Now probe whether an implicit constant expression conversion
- // can be used.
- //
- // An implicit constant expression conversion permits the following
- // conversions:
- //
- // * A constant-expression of type `int' can be converted to type
- // sbyte, byute, short, ushort, uint, ulong provided the value of
- // of the expression is withing the range of the destination type.
- //
- // * A constant-expression of type long can be converted to type
- // ulong, provided the value of the constant expression is not negative
- //
- // FIXME: Note that this assumes that constant folding has
- // taken place. We dont do constant folding yet.
- //
-
- if (argument_expr is IntConstant){
- IntConstant ei = (IntConstant) argument_expr;
- int value = ei.Value;
-
- if (p == TypeManager.sbyte_type){
- if (value >= SByte.MinValue && value <= SByte.MaxValue)
- return 1;
- } else if (p == TypeManager.byte_type){
- if (q == TypeManager.sbyte_type &&
- value >= SByte.MinValue && value <= SByte.MaxValue)
- return 0;
- else if (Byte.MinValue >= 0 && value <= Byte.MaxValue)
- return 1;
- } else if (p == TypeManager.short_type){
- if (value >= Int16.MinValue && value <= Int16.MaxValue)
- return 1;
- } else if (p == TypeManager.ushort_type){
- if (q == TypeManager.short_type &&
- value >= Int16.MinValue && value <= Int16.MaxValue)
- return 0;
- else if (value >= UInt16.MinValue && value <= UInt16.MaxValue)
- return 1;
- } else if (p == TypeManager.int32_type){
- if (value >= Int32.MinValue && value <= Int32.MaxValue)
- return 1;
- } else if (p == TypeManager.uint32_type){
- //
- // we can optimize this case: a positive int32
- // always fits on a uint32
- //
- if (value >= 0)
- return 1;
- } else if (p == TypeManager.uint64_type){
- //
- // we can optimize this case: a positive int32
- // always fits on a uint64
- //
-
- //
- // This special case is needed because csc behaves like this.
- // int -> uint is better than int -> ulong!
- //
- if (q == TypeManager.uint32_type)
- return 0;
-
- if (q == TypeManager.int64_type)
- return 0;
- else if (value >= 0)
- return 1;
- } else if (p == TypeManager.int64_type){
- return 1;
- }
- } else if (argument_type == TypeManager.int64_type && argument_expr is LongConstant){
- LongConstant lc = (LongConstant) argument_expr;
-
- if (p == TypeManager.uint64_type){
- if (lc.Value > 0)
- return 1;
- }
- }
-
- if (q == null) {
- Expression tmp = Convert.ImplicitConversion (ec, argument_expr, p, loc);
-
- if (tmp != null)
- return 1;
- else
- return 0;
- }
+ return q;
Expression p_tmp = new EmptyExpression (p);
Expression q_tmp = new EmptyExpression (q);
- if (Convert.ImplicitConversionExists (ec, p_tmp, q) == true &&
- Convert.ImplicitConversionExists (ec, q_tmp, p) == false)
- return 1;
+ bool p_to_q = Convert.ImplicitConversionExists (ec, p_tmp, q);
+ bool q_to_p = Convert.ImplicitConversionExists (ec, q_tmp, p);
+
+ if (p_to_q && !q_to_p)
+ return p;
+
+ if (q_to_p && !p_to_q)
+ return q;
if (p == TypeManager.sbyte_type)
if (q == TypeManager.byte_type || q == TypeManager.ushort_type ||
q == TypeManager.uint32_type || q == TypeManager.uint64_type)
- return 1;
+ return p;
+ if (q == TypeManager.sbyte_type)
+ if (p == TypeManager.byte_type || p == TypeManager.ushort_type ||
+ p == TypeManager.uint32_type || p == TypeManager.uint64_type)
+ return q;
if (p == TypeManager.short_type)
if (q == TypeManager.ushort_type || q == TypeManager.uint32_type ||
q == TypeManager.uint64_type)
- return 1;
+ return p;
+
+ if (q == TypeManager.short_type)
+ if (p == TypeManager.ushort_type || p == TypeManager.uint32_type ||
+ p == TypeManager.uint64_type)
+ return q;
if (p == TypeManager.int32_type)
if (q == TypeManager.uint32_type || q == TypeManager.uint64_type)
- return 1;
+ return p;
+
+ if (q == TypeManager.int32_type)
+ if (p == TypeManager.uint32_type || p == TypeManager.uint64_type)
+ return q;
if (p == TypeManager.int64_type)
if (q == TypeManager.uint64_type)
- return 1;
+ return p;
+ if (q == TypeManager.int64_type)
+ if (p == TypeManager.uint64_type)
+ return q;
- return 0;
+ return null;
}
/// <summary>
/// and the current best match
/// </summary>
/// <remarks>
- /// Returns an integer indicating :
- /// 0 if candidate ain't better
- /// 1 if candidate is better than the current best match
+ /// Returns a boolean indicating :
+ /// false if candidate ain't better
+ /// true if candidate is better than the current best match
/// </remarks>
- static int BetterFunction (EmitContext ec, ArrayList args,
+ static bool BetterFunction (EmitContext ec, ArrayList args, int argument_count,
MethodBase candidate, bool candidate_params,
- MethodBase best, bool best_params,
- Location loc)
+ MethodBase best, bool best_params, Location loc)
{
ParameterData candidate_pd = GetParameterData (candidate);
- ParameterData best_pd;
- int argument_count;
+ ParameterData best_pd = GetParameterData (best);
- if (args == null)
- argument_count = 0;
- else
- argument_count = args.Count;
-
int cand_count = candidate_pd.Count;
//
// Trim (); is better than Trim (params char[] chars);
//
if (cand_count == 0 && argument_count == 0)
- return best == null || best_params ? 1 : 0;
+ return !candidate_params && best_params;
- if (candidate_pd.ParameterModifier (cand_count - 1) != Parameter.Modifier.PARAMS)
+ if ((candidate_pd.ParameterModifier (cand_count - 1) != Parameter.Modifier.PARAMS) &&
+ (candidate_pd.ParameterModifier (cand_count - 1) != Parameter.Modifier.ARGLIST))
if (cand_count != argument_count)
- return 0;
-
- if (best == null) {
- int x = 0;
-
- if (argument_count == 0 && cand_count == 1 &&
- candidate_pd.ParameterModifier (cand_count - 1) == Parameter.Modifier.PARAMS)
- return 1;
-
- for (int j = 0; j < argument_count; ++j) {
-
- Argument a = (Argument) args [j];
- Type t = candidate_pd.ParameterType (j);
-
- if (candidate_pd.ParameterModifier (j) == Parameter.Modifier.PARAMS)
- if (candidate_params)
- t = TypeManager.GetElementType (t);
-
- x = BetterConversion (ec, a, t, null, loc);
-
- if (x <= 0)
- break;
- }
-
- if (x > 0)
- return 1;
- else
- return 0;
- }
+ return false;
- best_pd = GetParameterData (best);
+ bool better_at_least_one = false;
+ bool is_equal = true;
- int rating1 = 0, rating2 = 0;
-
for (int j = 0; j < argument_count; ++j) {
- int x, y;
-
Argument a = (Argument) args [j];
- Type ct = candidate_pd.ParameterType (j);
- Type bt = best_pd.ParameterType (j);
+ Type ct = TypeManager.TypeToCoreType (candidate_pd.ParameterType (j));
+ Type bt = TypeManager.TypeToCoreType (best_pd.ParameterType (j));
if (candidate_pd.ParameterModifier (j) == Parameter.Modifier.PARAMS)
if (candidate_params)
if (best_params)
bt = TypeManager.GetElementType (bt);
- x = BetterConversion (ec, a, ct, bt, loc);
- y = BetterConversion (ec, a, bt, ct, loc);
+ if (!ct.Equals (bt))
+ is_equal = false;
- if (x < y)
- return 0;
+ Type better = BetterConversion (ec, a, ct, bt, loc);
+ // for each argument, the conversion to 'ct' should be no worse than
+ // the conversion to 'bt'.
+ if (better == bt)
+ return false;
- rating1 += x;
- rating2 += y;
+ // for at least one argument, the conversion to 'ct' should be better than
+ // the conversion to 'bt'.
+ if (better == ct)
+ better_at_least_one = true;
}
//
// force it to select the candidate
//
if (!candidate_params && best_params && cand_count == argument_count)
- return 1;
+ return true;
- if (rating1 > rating2)
- return 1;
- else
- return 0;
+ //
+ // If two methods have equal parameter types, but
+ // only one of them is generic, the non-generic one wins.
+ //
+ if (is_equal) {
+ if (TypeManager.IsGenericMethod (best) && !TypeManager.IsGenericMethod (candidate))
+ return true;
+ else if (!TypeManager.IsGenericMethod (best) && TypeManager.IsGenericMethod (candidate))
+ return false;
+ }
+
+ return better_at_least_one;
}
public static string FullMethodDesc (MethodBase mb)
}
static bool IsParamsMethodApplicable (EmitContext ec, MethodGroupExpr me,
- ArrayList arguments, ref MethodBase candidate)
+ ArrayList arguments, int arg_count,
+ ref MethodBase candidate)
+ {
+ return IsParamsMethodApplicable (
+ ec, me, arguments, arg_count, false, ref candidate) ||
+ IsParamsMethodApplicable (
+ ec, me, arguments, arg_count, true, ref candidate);
+
+
+ }
+
+ static bool IsParamsMethodApplicable (EmitContext ec, MethodGroupExpr me,
+ ArrayList arguments, int arg_count,
+ bool do_varargs, ref MethodBase candidate)
{
if (!me.HasTypeArguments &&
!InferParamsTypeArguments (ec, arguments, ref candidate))
return false;
- return IsParamsMethodApplicable (ec, arguments, candidate);
+ return IsParamsMethodApplicable (
+ ec, arguments, arg_count, candidate, do_varargs);
}
/// <summary>
/// Determines if the candidate method, if a params method, is applicable
/// in its expanded form to the given set of arguments
/// </summary>
- static bool IsParamsMethodApplicable (EmitContext ec, ArrayList arguments, MethodBase candidate)
+ static bool IsParamsMethodApplicable (EmitContext ec, ArrayList arguments,
+ int arg_count, MethodBase candidate,
+ bool do_varargs)
{
- int arg_count;
-
- if (arguments == null)
- arg_count = 0;
- else
- arg_count = arguments.Count;
-
ParameterData pd = GetParameterData (candidate);
int pd_count = pd.Count;
if (pd_count == 0)
return false;
- if (pd.ParameterModifier (pd_count - 1) != Parameter.Modifier.PARAMS)
+ int count = pd_count - 1;
+ if (do_varargs) {
+ if (pd.ParameterModifier (count) != Parameter.Modifier.ARGLIST)
+ return false;
+ if (pd_count != arg_count)
+ return false;
+ } else {
+ if (pd.ParameterModifier (count) != Parameter.Modifier.PARAMS)
return false;
+ }
- if (pd_count - 1 > arg_count)
+ if (count > arg_count)
return false;
if (pd_count == 1 && arg_count == 0)
// remains is when the number of parameters is
// less than or equal to the argument count.
//
- for (int i = 0; i < pd_count - 1; ++i) {
+ for (int i = 0; i < count; ++i) {
Argument a = (Argument) arguments [i];
Parameter.Modifier a_mod = a.GetParameterModifier () &
- ~(Parameter.Modifier.OUT | Parameter.Modifier.REF);
+ (unchecked (~(Parameter.Modifier.OUT | Parameter.Modifier.REF)));
Parameter.Modifier p_mod = pd.ParameterModifier (i) &
- ~(Parameter.Modifier.OUT | Parameter.Modifier.REF);
+ (unchecked (~(Parameter.Modifier.OUT | Parameter.Modifier.REF)));
if (a_mod == p_mod) {
}
+ if (do_varargs) {
+ Argument a = (Argument) arguments [count];
+ if (!(a.Expr is Arglist))
+ return false;
+
+ return true;
+ }
+
Type element_type = TypeManager.GetElementType (pd.ParameterType (pd_count - 1));
for (int i = pd_count - 1; i < arg_count; i++) {
}
static bool IsApplicable (EmitContext ec, MethodGroupExpr me,
- ArrayList arguments, ref MethodBase candidate)
+ ArrayList arguments, int arg_count,
+ ref MethodBase candidate)
{
if (!me.HasTypeArguments &&
!InferTypeArguments (ec, arguments, ref candidate))
return false;
- return IsApplicable (ec, arguments, candidate);
+ return IsApplicable (ec, arguments, arg_count, candidate);
}
/// <summary>
/// Determines if the candidate method is applicable (section 14.4.2.1)
/// to the given set of arguments
/// </summary>
- static bool IsApplicable (EmitContext ec, ArrayList arguments, MethodBase candidate)
+ static bool IsApplicable (EmitContext ec, ArrayList arguments, int arg_count,
+ MethodBase candidate)
{
- int arg_count;
-
- if (arguments == null)
- arg_count = 0;
- else
- arg_count = arguments.Count;
-
-
ParameterData pd = GetParameterData (candidate);
if (arg_count != pd.Count)
Argument a = (Argument) arguments [i];
Parameter.Modifier a_mod = a.GetParameterModifier () &
- ~(Parameter.Modifier.OUT | Parameter.Modifier.REF);
+ unchecked (~(Parameter.Modifier.OUT | Parameter.Modifier.REF));
Parameter.Modifier p_mod = pd.ParameterModifier (i) &
- ~(Parameter.Modifier.OUT | Parameter.Modifier.REF);
+ unchecked (~(Parameter.Modifier.OUT | Parameter.Modifier.REF));
if (a_mod == p_mod ||
return true;
}
+ static private bool IsAncestralType (Type first_type, Type second_type)
+ {
+ return first_type != second_type &&
+ (second_type.IsSubclassOf (first_type) ||
+ TypeManager.ImplementsInterface (second_type, first_type));
+ }
+
/// <summary>
/// Find the Applicable Function Members (7.4.2.1)
///
Location loc)
{
MethodBase method = null;
+ bool method_params = false;
Type applicable_type = null;
- int argument_count;
+ int arg_count = 0;
ArrayList candidates = new ArrayList ();
//
//
Hashtable candidate_to_form = null;
-
- //
- // First we construct the set of applicable methods
- //
- // We start at the top of the type hierarchy and
- // go down to find applicable methods
- //
- applicable_type = me.DeclaringType;
-
- if (me.Name == "Invoke" && TypeManager.IsDelegateType (applicable_type)) {
+ if (Arguments != null)
+ arg_count = Arguments.Count;
+
+ if ((me.Name == "Invoke") &&
+ TypeManager.IsDelegateType (me.DeclaringType)) {
Error_InvokeOnDelegate (loc);
return null;
}
- bool found_applicable = false;
-
MethodBase[] methods = me.Methods;
- for (int i = 0; i < methods.Length; i++) {
+ //
+ // First we construct the set of applicable methods
+ //
+ bool is_sorted = true;
+ for (int i = 0; i < methods.Length; i++){
Type decl_type = methods [i].DeclaringType;
//
// If we have already found an applicable method
// we eliminate all base types (Section 14.5.5.1)
//
- if (decl_type != applicable_type &&
- (applicable_type.IsSubclassOf (decl_type) ||
- TypeManager.ImplementsInterface (applicable_type, decl_type)) &&
- found_applicable)
+ if ((applicable_type != null) &&
+ IsAncestralType (decl_type, applicable_type))
continue;
+ //
// Check if candidate is applicable (section 14.4.2.1)
- if (IsApplicable (ec, me, Arguments, ref methods [i])) {
- // Candidate is applicable in normal form
+ // Is candidate applicable in normal form?
+ //
+ bool is_applicable = IsApplicable (
+ ec, me, Arguments, arg_count, ref methods [i]);
+
+ if (!is_applicable &&
+ (IsParamsMethodApplicable (
+ ec, me, Arguments, arg_count, ref methods [i]))) {
MethodBase candidate = methods [i];
- candidates.Add (candidate);
- applicable_type = candidate.DeclaringType;
- found_applicable = true;
- } else if (IsParamsMethodApplicable (ec, me, Arguments, ref methods [i])) {
if (candidate_to_form == null)
candidate_to_form = new PtrHashtable ();
-
- // Candidate is applicable in expanded form
- MethodBase candidate = methods [i];
- candidates.Add (candidate);
- applicable_type = candidate.DeclaringType;
- found_applicable = true;
candidate_to_form [candidate] = candidate;
+ // Candidate is applicable in expanded form
+ is_applicable = true;
}
- }
-
- if (Arguments == null)
- argument_count = 0;
- else
- argument_count = Arguments.Count;
- //
- // Now we actually find the best method
- //
- int candidate_top = candidates.Count;
- for (int ix = 0; ix < candidate_top; ix++){
- MethodBase candidate = (MethodBase) candidates [ix];
-
- bool cand_params = candidate_to_form != null && candidate_to_form.Contains (candidate);
- bool method_params = false;
-
- if (method != null)
- method_params = candidate_to_form != null && candidate_to_form.Contains (method);
-
- int x = BetterFunction (ec, Arguments,
- candidate, cand_params,
- method, method_params,
- loc);
- if (x == 0)
+ if (!is_applicable)
continue;
-
- method = candidate;
- }
- if (method == null) {
- int errors = Report.Errors;
+ candidates.Add (methods [i]);
+
+ if (applicable_type == null)
+ applicable_type = decl_type;
+ else if (applicable_type != decl_type) {
+ is_sorted = false;
+ if (IsAncestralType (applicable_type, decl_type))
+ applicable_type = decl_type;
+ }
+ }
+
+ int candidate_top = candidates.Count;
+ if (candidate_top == 0) {
//
// Okay so we have failed to find anything so we
// return by providing info about the closest match
//
for (int i = 0; i < methods.Length; ++i) {
-
- MethodBase c = methods [i];
- if (c == null)
- continue;
-
+ MethodBase c = (MethodBase) methods [i];
ParameterData pd = GetParameterData (c);
- if (pd.Count != argument_count)
+
+ if (pd.Count != arg_count)
continue;
if (!InferTypeArguments (ec, Arguments, ref c))
continue;
- VerifyArgumentsCompat (ec, Arguments, argument_count,
- c, false, null, loc);
+ VerifyArgumentsCompat (ec, Arguments, arg_count,
+ c, false, null, may_fail, loc);
break;
}
- if (Report.Errors > errors)
- return null;
-
- string report_name = me.Name;
- if (report_name == ".ctor")
- report_name = me.DeclaringType.ToString ();
+ if (!may_fail) {
+ string report_name = me.Name;
+ if (report_name == ".ctor")
+ report_name = me.DeclaringType.ToString ();
- for (int i = 0; i < methods.Length; ++i) {
+ for (int i = 0; i < methods.Length; ++i) {
+ MethodBase c = methods [i];
+ ParameterData pd = GetParameterData (c);
- MethodBase c = methods [i];
- if (c == null)
- continue;
+ if (pd.Count != arg_count)
+ continue;
- ParameterData pd = GetParameterData (c);
- if (pd.Count != argument_count)
- continue;
+ if (InferTypeArguments (ec, Arguments, ref c))
+ continue;
- if (InferTypeArguments (ec, Arguments, ref c))
- continue;
+ Report.Error (
+ 411, loc, "The type arguments for " +
+ "method `{0}' cannot be infered from " +
+ "the usage. Try specifying the type " +
+ "arguments explicitly.", report_name);
+ return null;
+ }
- Report.Error (411, loc, "The type arguments for " +
- "method `{0}' cannot be infered from " +
- "the usage. Try specifying the type " +
- "arguments explicitly.", report_name);
- break;
+ Error_WrongNumArguments (
+ loc, report_name, arg_count);
+ return null;
}
- if (!may_fail && (errors == Report.Errors))
- Error_WrongNumArguments (loc, report_name,
- argument_count);
-
return null;
}
+ if (!is_sorted) {
+ //
+ // At this point, applicable_type is _one_ of the most derived types
+ // in the set of types containing the methods in this MethodGroup.
+ // Filter the candidates so that they only contain methods from the
+ // most derived types.
+ //
+
+ int finalized = 0; // Number of finalized candidates
+
+ do {
+ // Invariant: applicable_type is a most derived type
+
+ // We'll try to complete Section 14.5.5.1 for 'applicable_type' by
+ // eliminating all it's base types. At the same time, we'll also move
+ // every unrelated type to the end of the array, and pick the next
+ // 'applicable_type'.
+
+ Type next_applicable_type = null;
+ int j = finalized; // where to put the next finalized candidate
+ int k = finalized; // where to put the next undiscarded candidate
+ for (int i = finalized; i < candidate_top; ++i) {
+ Type decl_type = ((MethodBase) candidates[i]).DeclaringType;
+
+ if (decl_type == applicable_type) {
+ candidates[k++] = candidates[j];
+ candidates[j++] = candidates[i];
+ continue;
+ }
+
+ if (IsAncestralType (decl_type, applicable_type))
+ continue;
+
+ if (next_applicable_type != null &&
+ IsAncestralType (decl_type, next_applicable_type))
+ continue;
+
+ candidates[k++] = candidates[i];
+
+ if (next_applicable_type == null ||
+ IsAncestralType (next_applicable_type, decl_type))
+ next_applicable_type = decl_type;
+ }
+
+ applicable_type = next_applicable_type;
+ finalized = j;
+ candidate_top = k;
+ } while (applicable_type != null);
+ }
+
+ //
+ // Now we actually find the best method
+ //
+
+ method = (MethodBase) candidates[0];
+ method_params = candidate_to_form != null && candidate_to_form.Contains (method);
+ for (int ix = 1; ix < candidate_top; ix++){
+ MethodBase candidate = (MethodBase) candidates [ix];
+ bool cand_params = candidate_to_form != null && candidate_to_form.Contains (candidate);
+
+ if (BetterFunction (ec, Arguments, arg_count,
+ candidate, cand_params,
+ method, method_params, loc)) {
+ method = candidate;
+ method_params = cand_params;
+ }
+ }
+
//
// Now check that there are no ambiguities i.e the selected method
// should be better than all the others
//
- bool best_params = candidate_to_form != null && candidate_to_form.Contains (method);
-
+ bool ambiguous = false;
for (int ix = 0; ix < candidate_top; ix++){
MethodBase candidate = (MethodBase) candidates [ix];
if (candidate == method)
continue;
-
- //
- // If a normal method is applicable in
- // the sense that it has the same
- // number of arguments, then the
- // expanded params method is never
- // applicable so we debar the params
- // method.
- //
- // if ((IsParamsMethodApplicable (ec, Arguments, candidate) &&
-// IsApplicable (ec, Arguments, method)))
-// continue;
-
+
bool cand_params = candidate_to_form != null && candidate_to_form.Contains (candidate);
- int x = BetterFunction (ec, Arguments,
- method, best_params,
- candidate, cand_params,
- loc);
-
- if (x != 1) {
- Report.Error (
- 121, loc,
- "Ambiguous call when selecting function due to implicit casts");
- return null;
- }
+ if (!BetterFunction (ec, Arguments, arg_count,
+ method, method_params,
+ candidate, cand_params,
+ loc)) {
+ Report.SymbolRelatedToPreviousError (candidate);
+ ambiguous = true;
+ }
+ }
+
+ if (ambiguous) {
+ Report.SymbolRelatedToPreviousError (method);
+ Report.Error (121, loc, "Ambiguous call when selecting function due to implicit casts");
+ return null;
}
//
// necessary etc. and return if everything is
// all right
//
- if (!VerifyArgumentsCompat (ec, Arguments, argument_count, method,
- best_params, null, loc))
+ if (!VerifyArgumentsCompat (ec, Arguments, arg_count, method,
+ method_params, null, may_fail, loc))
return null;
return method;
}
public static bool VerifyArgumentsCompat (EmitContext ec, ArrayList Arguments,
- int argument_count,
- MethodBase method,
+ int arg_count, MethodBase method,
bool chose_params_expanded,
- Type delegate_type,
+ Type delegate_type, bool may_fail,
Location loc)
{
ParameterData pd = GetParameterData (method);
int pd_count = pd.Count;
- for (int j = 0; j < argument_count; j++) {
+ for (int j = 0; j < arg_count; j++) {
Argument a = (Argument) Arguments [j];
Expression a_expr = a.Expr;
Type parameter_type = pd.ParameterType (j);
if (pm == Parameter.Modifier.PARAMS){
if ((pm & ~Parameter.Modifier.PARAMS) != a.GetParameterModifier ()) {
- if (!Location.IsNull (loc))
+ if (!may_fail)
Error_InvalidArguments (
loc, j, method, delegate_type,
Argument.FullDesc (a), pd.ParameterDesc (j));
if (chose_params_expanded)
parameter_type = TypeManager.GetElementType (parameter_type);
+ } else if (pm == Parameter.Modifier.ARGLIST){
+ continue;
} else {
//
// Check modifiers
//
if (pd.ParameterModifier (j) != a.GetParameterModifier ()){
- if (!Location.IsNull (loc))
+ if (!may_fail)
Error_InvalidArguments (
loc, j, method, delegate_type,
Argument.FullDesc (a), pd.ParameterDesc (j));
//
// Check Type
//
- if (a.Type != parameter_type){
+ if (!TypeManager.IsEqual (a.Type, parameter_type)){
Expression conv;
-
+
conv = Convert.ImplicitConversion (ec, a_expr, parameter_type, loc);
if (conv == null) {
- if (!Location.IsNull (loc))
+ if (!may_fail)
Error_InvalidArguments (
loc, j, method, delegate_type,
Argument.FullDesc (a), pd.ParameterDesc (j));
a.Expr = conv;
}
+ if (parameter_type.IsPointer){
+ if (!ec.InUnsafe){
+ UnsafeError (loc);
+ return false;
+ }
+ }
+
Parameter.Modifier a_mod = a.GetParameterModifier () &
- ~(Parameter.Modifier.OUT | Parameter.Modifier.REF);
+ unchecked (~(Parameter.Modifier.OUT | Parameter.Modifier.REF));
Parameter.Modifier p_mod = pd.ParameterModifier (j) &
- ~(Parameter.Modifier.OUT | Parameter.Modifier.REF);
+ unchecked (~(Parameter.Modifier.OUT | Parameter.Modifier.REF));
if (a_mod != p_mod &&
pd.ParameterModifier (pd_count - 1) != Parameter.Modifier.PARAMS) {
- if (!Location.IsNull (loc)) {
+ if (!may_fail) {
Report.Error (1502, loc,
"The best overloaded match for method '" + FullMethodDesc (method)+
"' has some invalid arguments");
return true;
}
- static bool InferType (Type pt, Type at, ref Type[] infered)
+ static bool InferType (Type pt, Type at, Type[] infered)
{
- if (pt.IsGenericParameter) {
+ if (pt.IsGenericParameter && (pt.DeclaringMethod != null)) {
int pos = pt.GenericParameterPosition;
if (infered [pos] == null) {
while (check.IsArray)
check = check.GetElementType ();
- if (pt.Equals (check))
+ if (pt == check)
return false;
infered [pos] = at;
return true;
}
- if (!pt.ContainsGenericParameters)
- return true;
+ if (!pt.ContainsGenericParameters) {
+ if (at.ContainsGenericParameters)
+ return InferType (at, pt, infered);
+ else
+ return true;
+ }
if (at.IsArray) {
if (!pt.IsArray ||
(at.GetArrayRank () != pt.GetArrayRank ()))
return false;
- return InferType (pt.GetElementType (), at.GetElementType (),
- ref infered);
+ return InferType (pt.GetElementType (), at.GetElementType (), infered);
}
if (pt.IsArray) {
(pt.GetArrayRank () != at.GetArrayRank ()))
return false;
- return InferType (pt.GetElementType (), at.GetElementType (),
- ref infered);
+ return InferType (pt.GetElementType (), at.GetElementType (), infered);
}
- if (!at.IsGenericInstance)
- return false;
+ if (pt.IsByRef && at.IsByRef)
+ return InferType (pt.GetElementType (), at.GetElementType (), infered);
+ ArrayList list = new ArrayList ();
+ if (at.IsGenericInstance)
+ list.Add (at);
+ else {
+ for (Type bt = at.BaseType; bt != null; bt = bt.BaseType)
+ list.Add (bt);
+
+ list.AddRange (TypeManager.GetInterfaces (at));
+ }
+
+ bool found_one = false;
+
+ foreach (Type type in list) {
+ if (!type.IsGenericInstance)
+ continue;
+
+ Type[] infered_types = new Type [infered.Length];
+
+ if (!InferGenericInstance (pt, type, infered_types))
+ continue;
+
+ for (int i = 0; i < infered_types.Length; i++) {
+ if (infered [i] == null) {
+ infered [i] = infered_types [i];
+ continue;
+ }
+
+ if (infered [i] != infered_types [i])
+ return false;
+ }
+
+ found_one = true;
+ }
+
+ return found_one;
+ }
+ static bool InferGenericInstance (Type pt, Type at, Type[] infered_types)
+ {
Type[] at_args = at.GetGenericArguments ();
Type[] pt_args = pt.GetGenericArguments ();
if (at_args.Length != pt_args.Length)
return false;
- Type[] infered_types = new Type [at_args.Length];
-
- for (int i = 0; i < at_args.Length; i++)
- if (!InferType (pt_args [i], at_args [i], ref infered_types))
- return false;
-
- for (int i = 0; i < infered_types.Length; i++)
- if (infered_types [i] == null)
+ for (int i = 0; i < at_args.Length; i++) {
+ if (!InferType (pt_args [i], at_args [i], infered_types))
return false;
+ }
for (int i = 0; i < infered_types.Length; i++) {
- if (infered [i] == null) {
- infered [i] = infered_types [i];
- continue;
- }
-
- if (infered [i] != infered_types [i])
+ if (infered_types [i] == null)
return false;
}
Type pt = pd.ParameterType (i);
Type at = a.Type;
- if (!InferType (pt, at, ref infered_types))
+ if (!InferType (pt, at, infered_types))
return false;
}
if ((a.Expr is NullLiteral) || (a.Expr is MethodGroupExpr))
continue;
- if (!InferType (element_type, a.Type, ref infered_types))
+ if (!InferType (element_type, a.Type, infered_types))
return false;
}
return true;
}
- public static bool InferTypeArguments (Type[] param_types, Type[] arg_types,
- ref Type[] infered_types)
+ public static bool InferTypeArguments (Type[] param_types, Type[] arg_types, Type[] infered_types)
{
+ if (infered_types == null)
+ return false;
+
for (int i = 0; i < arg_types.Length; i++) {
if (arg_types [i] == null)
continue;
- if (!InferType (param_types [i], arg_types [i],
- ref infered_types))
+ if (!InferType (param_types [i], arg_types [i], infered_types))
return false;
}
return false;
Type[] method_args = method.GetGenericArguments ();
+
+ bool is_open = false;
+ for (int i = 0; i < method_args.Length; i++) {
+ if (method_args [i].IsGenericParameter) {
+ is_open = true;
+ break;
+ }
+ }
+ if (!is_open)
+ return true;
+
Type[] infered_types = new Type [method_args.Length];
Type[] param_types = new Type [pd.Count];
arg_types [i] = a.Type;
}
- if (!InferTypeArguments (param_types, arg_types, ref infered_types))
+ if (!InferTypeArguments (param_types, arg_types, infered_types))
return false;
method = method.BindGenericParameters (infered_types);
arg_types [i] = apd.ParameterType (i);
}
- if (!InferTypeArguments (param_types, arg_types, ref infered_types))
+ if (!InferTypeArguments (param_types, arg_types, infered_types))
return false;
method = method.BindGenericParameters (infered_types);
// First, resolve the expression that is used to
// trigger the invocation
//
- if (expr is BaseAccess)
- is_base = true;
-
if (expr is ConstructedType)
- expr = ((ConstructedType) expr).GetMemberAccess (ec);
+ expr = ((ConstructedType) expr).GetSimpleName (ec);
expr = expr.Resolve (ec, ResolveFlags.VariableOrValue | ResolveFlags.MethodGroup);
if (expr == null)
}
if (!(expr is MethodGroupExpr)){
- expr.Error_UnexpectedKind (ResolveFlags.MethodGroup);
+ expr.Error_UnexpectedKind (ResolveFlags.MethodGroup, loc);
return null;
}
MethodInfo mi = method as MethodInfo;
if (mi != null) {
type = TypeManager.TypeToCoreType (mi.ReturnType);
- if (!mi.IsStatic && !mg.IsExplicitImpl && (mg.InstanceExpression == null))
+ if (!mi.IsStatic && !mg.IsExplicitImpl && (mg.InstanceExpression == null)) {
SimpleName.Error_ObjectRefRequired (ec, loc, mi.Name);
+ return null;
+ }
+
+ Expression iexpr = mg.InstanceExpression;
+ if (mi.IsStatic && (iexpr != null) && !(iexpr is This)) {
+ if (mg.IdenticalTypeName)
+ mg.InstanceExpression = null;
+ else {
+ MemberAccess.error176 (loc, mi.Name);
+ return null;
+ }
+ }
}
if (type.IsPointer){
//
// Only base will allow this invocation to happen.
//
- if (is_base && method.IsAbstract){
+ if (mg.IsBase && method.IsAbstract){
Report.Error (205, loc, "Cannot call an abstract base member: " +
FullMethodDesc (method));
return null;
}
+ if (method.Name == "Finalize" && Arguments == null) {
+ if (mg.IsBase)
+ Report.Error (250, loc, "Do not directly call your base class Finalize method. It is called automatically from your destructor");
+ else
+ Report.Error (245, loc, "Destructors and object.Finalize cannot be called directly. Consider calling IDisposable.Dispose if available");
+ return null;
+ }
+
if ((method.Attributes & MethodAttributes.SpecialName) != 0){
- if (TypeManager.IsSpecialMethod (method))
- Report.Error (571, loc, method.Name + ": can not call operator or accessor");
+ if (TypeManager.LookupDeclSpace (method.DeclaringType) != null || TypeManager.IsSpecialMethod (method)) {
+ Report.Error (571, loc, TypeManager.CSharpSignature (method) + ": can not call operator or accessor");
+ return null;
+ }
}
+ if (mg.InstanceExpression != null)
+ mg.InstanceExpression.CheckMarshallByRefAccess (ec.ContainerType);
+
eclass = ExprClass.Value;
return this;
}
/// emission of the arguments is known not to contain
/// a `params' field (for example in constructors or other routines
/// that keep their arguments in this structure)
+ ///
+ /// if `dup_args' is true, a copy of the arguments will be left
+ /// on the stack. If `dup_args' is true, you can specify `this_arg'
+ /// which will be duplicated before any other args. Only EmitCall
+ /// should be using this interface.
/// </summary>
- public static void EmitArguments (EmitContext ec, MethodBase mb, ArrayList arguments)
+ public static void EmitArguments (EmitContext ec, MethodBase mb, ArrayList arguments, bool dup_args, LocalTemporary this_arg)
{
ParameterData pd;
if (mb != null)
pd = GetParameterData (mb);
else
pd = null;
+
+ LocalTemporary [] temps = null;
+
+ if (dup_args)
+ temps = new LocalTemporary [arguments.Count];
//
// If we are calling a params method with no arguments, special case it
}
a.Emit (ec);
+ if (dup_args) {
+ ec.ig.Emit (OpCodes.Dup);
+ (temps [i] = new LocalTemporary (ec, a.Type)).Store (ec);
+ }
+ }
+
+ if (dup_args) {
+ if (this_arg != null)
+ this_arg.Emit (ec);
+
+ for (int i = 0; i < top; i ++)
+ temps [i].Emit (ec);
}
if (pd != null && pd.Count > top &&
}
}
+ static Type[] GetVarargsTypes (EmitContext ec, MethodBase mb,
+ ArrayList arguments)
+ {
+ ParameterData pd = GetParameterData (mb);
+
+ if (arguments == null)
+ return new Type [0];
+
+ Argument a = (Argument) arguments [pd.Count - 1];
+ Arglist list = (Arglist) a.Expr;
+
+ return list.ArgumentTypes;
+ }
+
+ /// <summary>
+ /// This checks the ConditionalAttribute on the method
+ /// </summary>
+ static bool IsMethodExcluded (MethodBase method, EmitContext ec)
+ {
+ if (method.IsConstructor)
+ return false;
+
+ IMethodData md = TypeManager.GetMethod (method);
+ if (md != null)
+ return md.IsExcluded (ec);
+
+ // For some methods (generated by delegate class) GetMethod returns null
+ // because they are not included in builder_to_method table
+ if (method.DeclaringType is TypeBuilder)
+ return false;
+
+ return AttributeTester.IsConditionalMethodExcluded (method);
+ }
+
/// <remarks>
/// is_base tells whether we want to force the use of the `call'
/// opcode instead of using callvirt. Call is required to call
public static void EmitCall (EmitContext ec, bool is_base,
bool is_static, Expression instance_expr,
MethodBase method, ArrayList Arguments, Location loc)
+ {
+ EmitCall (ec, is_base, is_static, instance_expr, method, Arguments, loc, false, false);
+ }
+
+ // `dup_args' leaves an extra copy of the arguments on the stack
+ // `omit_args' does not leave any arguments at all.
+ // So, basically, you could make one call with `dup_args' set to true,
+ // and then another with `omit_args' set to true, and the two calls
+ // would have the same set of arguments. However, each argument would
+ // only have been evaluated once.
+ public static void EmitCall (EmitContext ec, bool is_base,
+ bool is_static, Expression instance_expr,
+ MethodBase method, ArrayList Arguments, Location loc,
+ bool dup_args, bool omit_args)
{
ILGenerator ig = ec.ig;
bool struct_call = false;
bool this_call = false;
+ LocalTemporary this_arg = null;
Type decl_type = method.DeclaringType;
method = TypeManager.void_array_copyto_array_int;
}
- //
- // This checks the `ConditionalAttribute' on the method, and the
- // ObsoleteAttribute
- //
- TypeManager.MethodFlags flags = TypeManager.GetMethodFlags (method, loc);
- if ((flags & TypeManager.MethodFlags.IsObsoleteError) != 0)
- return;
- if ((flags & TypeManager.MethodFlags.ShouldIgnore) != 0)
+ if (ec.TestObsoleteMethodUsage) {
+ //
+ // This checks ObsoleteAttribute on the method and on the declaring type
+ //
+ ObsoleteAttribute oa = AttributeTester.GetMethodObsoleteAttribute (method);
+ if (oa != null)
+ AttributeTester.Report_ObsoleteMessage (oa, TypeManager.CSharpSignature (method), loc);
+
+ oa = AttributeTester.GetObsoleteAttribute (method.DeclaringType);
+ if (oa != null) {
+ AttributeTester.Report_ObsoleteMessage (oa, method.DeclaringType.FullName, loc);
+ }
+ }
+
+ if (IsMethodExcluded (method, ec))
return;
if (!is_static){
- if (TypeManager.IsValueType (decl_type))
+ this_call = instance_expr == null;
+ if (decl_type.IsValueType || (!this_call && instance_expr.Type.IsValueType))
struct_call = true;
+
//
// If this is ourselves, push "this"
//
- if (instance_expr == null){
- this_call = true;
- ig.Emit (OpCodes.Ldarg_0);
- } else {
- Type itype = instance_expr.Type;
+ if (!omit_args) {
+ Type t = null;
+ if (this_call) {
+ ig.Emit (OpCodes.Ldarg_0);
+ t = decl_type;
+ } else {
+ Type iexpr_type = instance_expr.Type;
- //
- // Push the instance expression
- //
- if (TypeManager.IsValueType (itype)){
//
- // Special case: calls to a function declared in a
- // reference-type with a value-type argument need
- // to have their value boxed.
- if (decl_type.IsValueType || itype.IsGenericParameter){
- //
- // If the expression implements IMemoryLocation, then
- // we can optimize and use AddressOf on the
- // return.
+ // Push the instance expression
+ //
+ if (TypeManager.IsValueType (iexpr_type)) {
//
- // If not we have to use some temporary storage for
- // it.
- if (instance_expr is IMemoryLocation){
- ((IMemoryLocation)instance_expr).
- AddressOf (ec, AddressOp.LoadStore);
- }
- else {
+ // Special case: calls to a function declared in a
+ // reference-type with a value-type argument need
+ // to have their value boxed.
+ if (decl_type.IsValueType ||
+ iexpr_type.IsGenericParameter) {
+ //
+ // If the expression implements IMemoryLocation, then
+ // we can optimize and use AddressOf on the
+ // return.
+ //
+ // If not we have to use some temporary storage for
+ // it.
+ if (instance_expr is IMemoryLocation) {
+ ((IMemoryLocation)instance_expr).
+ AddressOf (ec, AddressOp.LoadStore);
+ } else {
+ LocalTemporary temp = new LocalTemporary (ec, iexpr_type);
+ instance_expr.Emit (ec);
+ temp.Store (ec);
+ temp.AddressOf (ec, AddressOp.Load);
+ }
+
+ // avoid the overhead of doing this all the time.
+ if (dup_args)
+ t = TypeManager.GetReferenceType (iexpr_type);
+ } else {
instance_expr.Emit (ec);
- LocalBuilder temp = ig.DeclareLocal (itype);
- ig.Emit (OpCodes.Stloc, temp);
- ig.Emit (OpCodes.Ldloca, temp);
+ ig.Emit (OpCodes.Box, instance_expr.Type);
+ t = TypeManager.object_type;
}
- if (itype.IsGenericParameter)
- ig.Emit (OpCodes.Constrained, itype);
- else
- struct_call = true;
} else {
instance_expr.Emit (ec);
- ig.Emit (OpCodes.Box, itype);
- }
- } else
- instance_expr.Emit (ec);
+ t = instance_expr.Type;
+ }
+ }
+
+ if (dup_args) {
+ this_arg = new LocalTemporary (ec, t);
+ ig.Emit (OpCodes.Dup);
+ this_arg.Store (ec);
+ }
}
}
- EmitArguments (ec, method, Arguments);
+ if (!omit_args)
+ EmitArguments (ec, method, Arguments, dup_args, this_arg);
+
+ if ((instance_expr != null) && (instance_expr.Type.IsGenericParameter))
+ ig.Emit (OpCodes.Constrained, instance_expr.Type);
+
+ OpCode call_op;
+ if (is_static || struct_call || is_base || (this_call && !method.IsVirtual))
+ call_op = OpCodes.Call;
+ else
+ call_op = OpCodes.Callvirt;
+
+ if ((method.CallingConvention & CallingConventions.VarArgs) != 0) {
+ Type[] varargs_types = GetVarargsTypes (ec, method, Arguments);
+ ig.EmitCall (call_op, (MethodInfo) method, varargs_types);
+ return;
+ }
+
//
// If you have:
// this.DoFoo ();
// and DoFoo is not virtual, you can omit the callvirt,
// because you don't need the null checking behavior.
//
- if (is_static || struct_call || is_base || (this_call && !method.IsVirtual)){
- if (method is MethodInfo) {
- ig.Emit (OpCodes.Call, (MethodInfo) method);
- } else
- ig.Emit (OpCodes.Call, (ConstructorInfo) method);
- } else {
- if (method is MethodInfo)
- ig.Emit (OpCodes.Callvirt, (MethodInfo) method);
- else
- ig.Emit (OpCodes.Callvirt, (ConstructorInfo) method);
- }
+ if (method is MethodInfo)
+ ig.Emit (call_op, (MethodInfo) method);
+ else
+ ig.Emit (call_op, (ConstructorInfo) method);
}
public override void Emit (EmitContext ec)
{
MethodGroupExpr mg = (MethodGroupExpr) this.expr;
- EmitCall (ec, is_base, method.IsStatic, mg.InstanceExpression, method, Arguments, loc);
+ EmitCall (ec, mg.IsBase, method.IsStatic, mg.InstanceExpression, method, Arguments, loc);
}
public override void EmitStatement (EmitContext ec)
//
// First try to resolve it as a cast.
//
- type = ec.DeclSpace.ResolveType (expr, true, loc);
- if (type != null) {
- Cast cast = new Cast (new TypeExpression (type, loc), argument, loc);
+ TypeExpr te = expr.ResolveAsTypeStep (ec) as TypeExpr;
+ if ((te != null) && (te.eclass == ExprClass.Type)) {
+ Cast cast = new Cast (te, argument, loc);
return cast.Resolve (ec);
}
//
// First try to resolve it as a cast.
//
- type = ec.DeclSpace.ResolveType (expr, true, loc);
- if (type != null) {
+ TypeExpr te = expr.ResolveAsTypeStep (ec) as TypeExpr;
+ if ((te != null) && (te.eclass == ExprClass.Type)) {
error201 ();
return null;
}
value_target = value;
value_target_set = true;
if (!(value_target is IMemoryLocation)){
- Error_UnexpectedKind ("variable");
+ Error_UnexpectedKind ("variable", loc);
return false;
}
return true;
return this;
}
- type = ec.DeclSpace.ResolveType (RequestedType, false, loc);
+ TypeExpr texpr = RequestedType.ResolveAsTypeTerminal (ec);
+ if (texpr == null)
+ return null;
+ type = texpr.Type;
if (type == null)
return null;
+ CheckObsoleteAttribute (type);
+
bool IsDelegate = TypeManager.IsDelegateType (type);
if (IsDelegate){
RequestedType = (new NewDelegate (type, Arguments, loc)).Resolve (ec);
if (RequestedType != null)
- if (!(RequestedType is NewDelegate))
+ if (!(RequestedType is DelegateCreation))
throw new Exception ("NewDelegate.Resolve returned a non NewDelegate: " + RequestedType.GetType ());
return RequestedType;
}
is_type_parameter = true;
eclass = ExprClass.Value;
return this;
- } else if (type.IsInterface || type.IsAbstract){
+ }
+
+ if (type.IsInterface || type.IsAbstract){
Error (144, "It is not possible to create instances of interfaces or abstract classes");
return null;
}
-
+
+ if (type.IsAbstract && type.IsSealed) {
+ Report.Error (712, loc, "Cannot create an instance of the static class '{0}'", TypeManager.CSharpName (type));
+ return null;
+ }
+
bool is_struct = type.IsValueType;
eclass = ExprClass.Value;
//
if (is_struct && Arguments == null)
return this;
-
+
Expression ml;
- ml = MemberLookupFinal (ec, null, type, ".ctor",
+ ml = MemberLookupFinal (ec, type, type, ".ctor",
+ // For member-lookup, treat 'new Foo (bar)' as call to 'foo.ctor (bar)', where 'foo' is of type 'Foo'.
MemberTypes.Constructor,
AllBindingFlags | BindingFlags.DeclaredOnly, loc);
if (! (ml is MethodGroupExpr)){
if (!is_struct){
- ml.Error_UnexpectedKind ("method group");
+ ml.Error_UnexpectedKind ("method group", loc);
return null;
}
}
//
bool DoEmit (EmitContext ec, bool need_value_on_stack)
{
- bool is_value_type = type.IsValueType;
+ bool is_value_type = TypeManager.IsValueType (type);
ILGenerator ig = ec.ig;
if (is_value_type){
}
if (method != null)
- Invocation.EmitArguments (ec, method, Arguments);
+ Invocation.EmitArguments (ec, method, Arguments, false, null);
if (is_value_type){
if (method == null)
IMemoryLocation ml = (IMemoryLocation) value_target;
ml.AddressOf (ec, AddressOp.Store);
if (method != null)
- Invocation.EmitArguments (ec, method, Arguments);
+ Invocation.EmitArguments (ec, method, Arguments, false, null);
if (method == null)
ec.ig.Emit (OpCodes.Initobj, type);
/// initialization data and the other which does not need dimensions
/// specified but where initialization data is mandatory.
/// </remarks>
- public class ArrayCreation : ExpressionStatement {
+ public class ArrayCreation : Expression {
Expression requested_base_type;
ArrayList initializers;
Expression tmp = (Expression) o;
tmp = tmp.Resolve (ec);
if (tmp == null)
- continue;
+ return false;
// Console.WriteLine ("I got: " + tmp);
// Handle initialization from vars, fields etc.
}
}
- void Error_NegativeArrayIndex ()
- {
- Error (284, "Can not create array with a negative size");
- }
-
//
// Converts `source' to an int, uint, long or ulong.
//
if (target is Constant){
if (target is IntConstant){
if (((IntConstant) target).Value < 0){
- Error_NegativeArrayIndex ();
+ Expression.Error_NegativeArrayIndex (loc);
return null;
}
}
if (target is LongConstant){
if (((LongConstant) target).Value < 0){
- Error_NegativeArrayIndex ();
+ Expression.Error_NegativeArrayIndex (loc);
return null;
}
}
//
// Lookup the type
//
- Expression array_type_expr;
+ TypeExpr array_type_expr;
array_type_expr = new ComposedCast (requested_base_type, array_qualifier.ToString (), loc);
- type = ec.DeclSpace.ResolveType (array_type_expr, false, loc);
-
- if (type == null)
+ array_type_expr = array_type_expr.ResolveAsTypeTerminal (ec);
+ if (array_type_expr == null)
return false;
- underlying_type = type;
- if (underlying_type.IsArray)
- underlying_type = TypeManager.GetElementType (underlying_type);
+ type = array_type_expr.Type;
+
+ if (!type.IsArray) {
+ Error (622, "Can only use array initializer expressions to assign to array types. Try using a new expression instead.");
+ return false;
+ }
+ underlying_type = TypeManager.GetElementType (type);
dimensions = type.GetArrayRank ();
return true;
array_element_type = TypeManager.GetElementType (type);
+ if (array_element_type.IsAbstract && array_element_type.IsSealed) {
+ Report.Error (719, loc, "'{0}': array elements cannot be of static type", TypeManager.CSharpName (array_element_type));
+ return null;
+ }
+
if (arg_count == 1) {
is_one_dimensional = true;
eclass = ExprClass.Value;
AllBindingFlags, loc);
if (!(ml is MethodGroupExpr)) {
- ml.Error_UnexpectedKind ("method group");
+ ml.Error_UnexpectedKind ("method group", loc);
return null;
}
//
// Emits the initializers for the array
//
- void EmitStaticInitializers (EmitContext ec, bool is_expression)
+ void EmitStaticInitializers (EmitContext ec)
{
//
// First, the static data
fb = RootContext.MakeStaticData (data);
- if (is_expression)
- ig.Emit (OpCodes.Dup);
+ ig.Emit (OpCodes.Dup);
ig.Emit (OpCodes.Ldtoken, fb);
ig.Emit (OpCodes.Call,
TypeManager.void_initializearray_array_fieldhandle);
//
// This always expect the top value on the stack to be the array
//
- void EmitDynamicInitializers (EmitContext ec, bool is_expression)
+ void EmitDynamicInitializers (EmitContext ec)
{
ILGenerator ig = ec.ig;
int dims = bounds.Count;
num_automatic_initializers <= max_automatic_initializers) {
Type etype = e.Type;
- if (is_expression || i != top - 1)
- ig.Emit (OpCodes.Dup);
+ ig.Emit (OpCodes.Dup);
for (int idx = 0; idx < dims; idx++)
IntConstant.EmitInt (ig, current_pos [idx]);
e.Emit (ec);
- if (dims == 1)
- ArrayAccess.EmitStoreOpcode (ig, array_element_type);
- else
+ if (dims == 1) {
+ bool is_stobj, has_type_arg;
+ OpCode op = ArrayAccess.GetStoreOpcode (
+ etype, out is_stobj,
+ out has_type_arg);
+ if (is_stobj)
+ ig.Emit (OpCodes.Stobj, etype);
+ else if (has_type_arg)
+ ig.Emit (op, etype);
+ else
+ ig.Emit (op);
+ } else
ig.Emit (OpCodes.Call, set);
-
- }
+ }
}
//
}
}
- void DoEmit (EmitContext ec, bool is_statement)
+ public override void Emit (EmitContext ec)
{
ILGenerator ig = ec.ig;
// initialized. num_automatic_initializers will always be zero. See
// CheckIndices.
if (num_automatic_initializers > max_automatic_initializers)
- EmitStaticInitializers (ec, dynamic_initializers || !is_statement);
+ EmitStaticInitializers (ec);
if (dynamic_initializers)
- EmitDynamicInitializers (ec, !is_statement);
+ EmitDynamicInitializers (ec);
}
}
- public override void Emit (EmitContext ec)
- {
- DoEmit (ec, false);
- }
-
- public override void EmitStatement (EmitContext ec)
- {
- DoEmit (ec, true);
- }
-
public object EncodeAsAttribute ()
{
if (!is_one_dimensional){
if (e is NullLiteral)
v = null;
else {
- if (!Attribute.GetAttributeArgumentExpression (e, Location, out v))
+ if (!Attribute.GetAttributeArgumentExpression (e, Location, array_element_type, out v))
return null;
}
ret [i++] = v;
}
return ret;
}
-
- public Expression TurnIntoConstant ()
- {
- //
- // Should use something like the above attribute thing.
- // It should return a subclass of Constant that just returns
- // the computed value of the array
- //
- throw new Exception ("Does not support yet Turning array into a Constant");
- }
}
/// <summary>
eclass = ExprClass.Variable;
if (ec.TypeContainer.CurrentType != null)
- type = ec.TypeContainer.CurrentType.ResolveType (ec);
+ type = ec.TypeContainer.CurrentType;
else
type = ec.ContainerType;
if (!ResolveBase (ec))
return null;
- if ((variable_info != null) && !variable_info.IsAssigned (ec)) {
- Error (188, "The this object cannot be used before all " +
- "of its fields are assigned to");
- variable_info.SetAssigned (ec);
- return this;
- }
-
- if (ec.IsFieldInitializer) {
- Error (27, "Keyword `this' can't be used outside a constructor, " +
- "a method or a property.");
+ if ((variable_info != null) && !variable_info.IsAssigned (ec)) {
+ Error (188, "The this object cannot be used before all " +
+ "of its fields are assigned to");
+ variable_info.SetAssigned (ec);
+ return this;
+ }
+
+ if (ec.IsFieldInitializer) {
+ Error (27, "Keyword `this' can't be used outside a constructor, " +
+ "a method or a property.");
+ return null;
+ }
+
+ return this;
+ }
+
+ override public Expression DoResolveLValue (EmitContext ec, Expression right_side)
+ {
+ if (!ResolveBase (ec))
+ return null;
+
+ if (variable_info != null)
+ variable_info.SetAssigned (ec);
+
+ if (ec.TypeContainer is Class){
+ Error (1604, "Cannot assign to `this'");
+ return null;
+ }
+
+ return this;
+ }
+
+ public void Emit (EmitContext ec, bool leave_copy)
+ {
+ Emit (ec);
+ if (leave_copy)
+ ec.ig.Emit (OpCodes.Dup);
+ }
+
+ public void EmitAssign (EmitContext ec, Expression source, bool leave_copy, bool prepare_for_load)
+ {
+ ILGenerator ig = ec.ig;
+
+ if (ec.TypeContainer is Struct){
+ ec.EmitThis ();
+ source.Emit (ec);
+ if (leave_copy)
+ ec.ig.Emit (OpCodes.Dup);
+ ig.Emit (OpCodes.Stobj, type);
+ } else {
+ throw new Exception ("how did you get here");
+ }
+ }
+
+ public override void Emit (EmitContext ec)
+ {
+ ILGenerator ig = ec.ig;
+
+ ec.EmitThis ();
+ if (ec.TypeContainer is Struct)
+ ig.Emit (OpCodes.Ldobj, type);
+ }
+
+ public void AddressOf (EmitContext ec, AddressOp mode)
+ {
+ ec.EmitThis ();
+
+ // FIMXE
+ // FIGURE OUT WHY LDARG_S does not work
+ //
+ // consider: struct X { int val; int P { set { val = value; }}}
+ //
+ // Yes, this looks very bad. Look at `NOTAS' for
+ // an explanation.
+ // ec.ig.Emit (OpCodes.Ldarga_S, (byte) 0);
+ }
+ }
+
+ /// <summary>
+ /// Represents the `__arglist' construct
+ /// </summary>
+ public class ArglistAccess : Expression
+ {
+ public ArglistAccess (Location loc)
+ {
+ this.loc = loc;
+ }
+
+ public bool ResolveBase (EmitContext ec)
+ {
+ eclass = ExprClass.Variable;
+ type = TypeManager.runtime_argument_handle_type;
+ return true;
+ }
+
+ public override Expression DoResolve (EmitContext ec)
+ {
+ if (!ResolveBase (ec))
+ return null;
+
+ if (ec.IsFieldInitializer || !ec.CurrentBlock.HasVarargs) {
+ Error (190, "The __arglist construct is valid only within " +
+ "a variable argument method.");
return null;
}
return this;
}
- override public Expression DoResolveLValue (EmitContext ec, Expression right_side)
+ public override void Emit (EmitContext ec)
{
- if (!ResolveBase (ec))
- return null;
-
- if (variable_info != null)
- variable_info.SetAssigned (ec);
-
- if (ec.TypeContainer is Class){
- Error (1604, "Cannot assign to `this'");
- return null;
- }
-
- return this;
+ ec.ig.Emit (OpCodes.Arglist);
}
+ }
- public override void Emit (EmitContext ec)
+ /// <summary>
+ /// Represents the `__arglist (....)' construct
+ /// </summary>
+ public class Arglist : Expression
+ {
+ public readonly Argument[] Arguments;
+
+ public Arglist (Argument[] args, Location l)
{
- ILGenerator ig = ec.ig;
+ Arguments = args;
+ loc = l;
+ }
- ec.EmitThis ();
- if (ec.TypeContainer is Struct)
- ig.Emit (OpCodes.Ldobj, type);
+ public Type[] ArgumentTypes {
+ get {
+ Type[] retval = new Type [Arguments.Length];
+ for (int i = 0; i < Arguments.Length; i++)
+ retval [i] = Arguments [i].Type;
+ return retval;
+ }
}
- public void EmitAssign (EmitContext ec, Expression source)
+ public override Expression DoResolve (EmitContext ec)
{
- ILGenerator ig = ec.ig;
-
- if (ec.TypeContainer is Struct){
- ec.EmitThis ();
- source.Emit (ec);
- ig.Emit (OpCodes.Stobj, type);
- } else {
- source.Emit (ec);
- ig.Emit (OpCodes.Starg, 0);
+ eclass = ExprClass.Variable;
+ type = TypeManager.runtime_argument_handle_type;
+
+ foreach (Argument arg in Arguments) {
+ if (!arg.Resolve (ec, loc))
+ return null;
}
+
+ return this;
}
- public void AddressOf (EmitContext ec, AddressOp mode)
+ public override void Emit (EmitContext ec)
{
- ec.EmitThis ();
-
- // FIMXE
- // FIGURE OUT WHY LDARG_S does not work
- //
- // consider: struct X { int val; int P { set { val = value; }}}
- //
- // Yes, this looks very bad. Look at `NOTAS' for
- // an explanation.
- // ec.ig.Emit (OpCodes.Ldarga_S, (byte) 0);
+ foreach (Argument arg in Arguments)
+ arg.Emit (ec);
}
}
/// Implements the typeof operator
/// </summary>
public class TypeOf : Expression {
- public readonly Expression QueriedType;
+ public Expression QueriedType;
protected Type typearg;
public TypeOf (Expression queried_type, Location l)
public override Expression DoResolve (EmitContext ec)
{
- typearg = ec.DeclSpace.ResolveType (QueriedType, false, loc);
-
- if (typearg == null)
+ TypeExpr texpr = QueriedType.ResolveAsTypeTerminal (ec);
+ if (texpr == null)
return null;
+ typearg = texpr.Type;
+
if (typearg == TypeManager.void_type) {
Error (673, "System.Void cannot be used from C# - " +
"use typeof (void) to get the void type object");
return null;
}
+ if (typearg.IsPointer && !ec.InUnsafe){
+ UnsafeError (loc);
+ return null;
+ }
+ CheckObsoleteAttribute (typearg);
+
type = TypeManager.type_type;
eclass = ExprClass.Type;
return this;
if (!ec.InUnsafe) {
Report.Error (
233, loc, "Sizeof may only be used in an unsafe context " +
- "(consider using System.Runtime.InteropServices.Marshal.Sizeof");
+ "(consider using System.Runtime.InteropServices.Marshal.SizeOf");
return null;
}
- QueriedType = ec.DeclSpace.ResolveTypeExpr (QueriedType, false, loc);
- if (QueriedType == null || QueriedType.Type == null)
+ TypeExpr texpr = QueriedType.ResolveAsTypeTerminal (ec);
+ if (texpr == null)
return null;
- if (QueriedType is TypeParameterExpr){
- ((TypeParameterExpr)QueriedType).Error_CannotUseAsUnmanagedType (loc);
+ if (texpr is TypeParameterExpr){
+ ((TypeParameterExpr)texpr).Error_CannotUseAsUnmanagedType (loc);
return null;
}
- type_queried = QueriedType.Type;
+ type_queried = texpr.Type;
+
+ CheckObsoleteAttribute (type_queried);
+
if (!TypeManager.IsUnmanagedType (type_queried)){
Report.Error (208, loc, "Cannot take the size of an unmanaged type (" + TypeManager.CSharpName (type_queried) + ")");
return null;
}
}
- static void error176 (Location loc, string name)
+ public static void error176 (Location loc, string name)
{
Report.Error (176, loc, "Static member `" +
name + "' cannot be accessed " +
"type name instead");
}
- static bool IdenticalNameAndTypeName (EmitContext ec, Expression left_original, Expression left, Location loc)
+ public static bool IdenticalNameAndTypeName (EmitContext ec, Expression left_original, Expression left, Location loc)
{
SimpleName sn = left_original as SimpleName;
if (sn == null || left == null || left.Type.Name != sn.Name)
return RootContext.LookupType (ec.DeclSpace, sn.Name, true, loc) != null;
}
-
+
+ // TODO: possible optimalization
+ // Cache resolved constant result in FieldBuilder <-> expresion map
public static Expression ResolveMemberAccess (EmitContext ec, Expression member_lookup,
Expression left, Location loc,
Expression left_original)
if (member_lookup is FieldExpr){
FieldExpr fe = (FieldExpr) member_lookup;
- FieldInfo fi = fe.FieldInfo;
+ FieldInfo fi = fe.FieldInfo.Mono_GetGenericFieldDefinition ();
Type decl_type = fi.DeclaringType;
- if (fi is FieldBuilder) {
+ bool is_emitted = fi is FieldBuilder;
+ Type t = fi.FieldType;
+
+ if (is_emitted) {
Const c = TypeManager.LookupConstant ((FieldBuilder) fi);
if (c != null) {
object real_value = ((Constant) c.Expr).GetValue ();
- return Constantify (real_value, fi.FieldType);
+ return Constantify (real_value, t);
}
}
+ // IsInitOnly is because of MS compatibility, I don't know why but they emit decimal constant as InitOnly
+ if (fi.IsInitOnly && !is_emitted && t == TypeManager.decimal_type) {
+ object[] attrs = fi.GetCustomAttributes (TypeManager.decimal_constant_attribute_type, false);
+ if (attrs.Length == 1)
+ return new DecimalConstant (((System.Runtime.CompilerServices.DecimalConstantAttribute) attrs [0]).Value);
+ }
+
if (fi.IsLiteral) {
- Type t = fi.FieldType;
-
object o;
- if (fi is FieldBuilder)
+ if (is_emitted)
o = TypeManager.GetValue ((FieldBuilder) fi);
else
o = fi.GetValue (fi);
return exp;
}
- if (fi.FieldType.IsPointer && !ec.InUnsafe){
+ if (t.IsPointer && !ec.InUnsafe){
UnsafeError (loc);
return null;
}
// accessors and private field etc so there's no need
// to transform ourselves.
//
+ ee.InstanceExpression = left;
return ee;
}
if (!left_is_explicit)
left = null;
+ ee.InstanceExpression = left;
+
return ResolveMemberAccess (ec, ml, left, loc, left_original);
}
}
if (member_lookup is IMemberExpr) {
IMemberExpr me = (IMemberExpr) member_lookup;
+ MethodGroupExpr mg = me as MethodGroupExpr;
if (left_is_type){
- MethodGroupExpr mg = me as MethodGroupExpr;
if ((mg != null) && left_is_explicit && left.Type.IsInterface)
mg.IsExplicitImpl = left_is_explicit;
if ((ec.IsFieldInitializer || ec.IsStatic) &&
IdenticalNameAndTypeName (ec, left_original, member_lookup, loc))
return member_lookup;
-
+
SimpleName.Error_ObjectRefRequired (ec, loc, me.Name);
return null;
}
} else {
- if (!me.IsInstance) {
+ if (!me.IsInstance){
if (IdenticalNameAndTypeName (ec, left_original, left, loc))
return member_lookup;
error176 (loc, me.Name);
return null;
}
- }
+ }
//
// Since we can not check for instance objects in SimpleName,
}
}
+ if ((mg != null) && IdenticalNameAndTypeName (ec, left_original, left, loc))
+ mg.IdenticalTypeName = true;
+
me.InstanceExpression = left;
}
//
Expression original = expr;
- expr = expr.Resolve (ec, flags | ResolveFlags.DisableFlowAnalysis);
+ expr = expr.Resolve (ec, flags | ResolveFlags.Intermediate | ResolveFlags.DisableFlowAnalysis);
if (expr == null)
return null;
if (expr is SimpleName){
SimpleName child_expr = (SimpleName) expr;
+ string fqname = DeclSpace.MakeFQN (child_expr.Name, Identifier);
- Expression new_expr = new SimpleName (child_expr.Name, Identifier, loc);
+ Expression new_expr;
+ if (args != null)
+ new_expr = new ConstructedType (fqname, args, loc);
+ else
+ new_expr = new SimpleName (fqname, loc);
return new_expr.Resolve (ec, flags);
}
Type expr_type;
if (expr is TypeExpr){
- expr_type = ((TypeExpr) expr).ResolveType (ec);
+ expr_type = expr.Type;
if (!ec.DeclSpace.CheckAccessLevel (expr_type)){
- Error (122, "`" + expr_type + "' " +
- "is inaccessible because of its protection level");
+ Report.Error (122, loc, "'{0}' is inaccessible due to its protection level", expr_type);
return null;
}
object value = en.LookupEnumValue (ec, Identifier, loc);
if (value != null){
+ MemberCore mc = en.GetDefinition (Identifier);
+ ObsoleteAttribute oa = mc.GetObsoleteAttribute (en);
+ if (oa != null) {
+ AttributeTester.Report_ObsoleteMessage (oa, mc.GetSignatureForError (), Location);
+ }
+ oa = en.GetObsoleteAttribute (en);
+ if (oa != null) {
+ AttributeTester.Report_ObsoleteMessage (oa, en.GetSignatureForError (), Location);
+ }
+
Constant c = Constantify (value, en.UnderlyingType);
return new EnumConstant (c, expr_type);
}
+ } else {
+ CheckObsoleteAttribute (expr_type);
+
+ FieldInfo fi = expr_type.GetField (Identifier);
+ if (fi != null) {
+ ObsoleteAttribute oa = AttributeTester.GetMemberObsoleteAttribute (fi);
+ if (oa != null)
+ AttributeTester.Report_ObsoleteMessage (oa, TypeManager.GetFullNameSignature (fi), Location);
+ }
}
}
} else
member_lookup = MemberLookup (
ec, expr_type, expr_type, Identifier, loc);
if ((member_lookup == null) && (args != null)) {
- string lookup_id = Identifier + "!" + args.Count;
+ string lookup_id = MemberName.MakeName (Identifier, args);
member_lookup = MemberLookup (
ec, expr_type, expr_type, lookup_id, loc);
}
if (mg == null)
throw new InternalErrorException ();
- 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 mg.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, mg.Location);
- new_mg.InstanceExpression = mg.InstanceExpression;
- new_mg.HasTypeArguments = true;
- return new_mg;
- }
-
- string name = expr_type + "." + Identifier;
-
- 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;
+ return mg.ResolveGeneric (ec, args);
}
// The following DoResolve/DoResolveLValue will do the definite assignment
else
fname = full_expr.Identifier;
+ fname = MemberName.MakeName (fname, args);
+
if (full_expr.Expr is SimpleName) {
string full_name = String.Concat (((SimpleName) full_expr.Expr).Name, ".", fname);
Type fully_qualified = ec.DeclSpace.FindType (loc, full_name);
- if (fully_qualified != null)
- return new TypeExpression (fully_qualified, loc);
+ if (fully_qualified != null) {
+ if (args == null)
+ return new TypeExpression (fully_qualified, loc);
+
+ ConstructedType ctype = new ConstructedType (fully_qualified, args, loc);
+ return ctype.ResolveAsTypeStep (ec);
+ }
}
full_expr = full_expr.Expr as MemberAccess;
if (new_expr is SimpleName){
SimpleName child_expr = (SimpleName) new_expr;
+ string fqname = DeclSpace.MakeFQN (child_expr.Name, Identifier);
- new_expr = new SimpleName (child_expr.Name, Identifier, loc);
+ if (args != null)
+ new_expr = new ConstructedType (fqname, args, loc);
+ else
+ new_expr = new SimpleName (fqname, loc);
return new_expr.ResolveAsTypeStep (ec);
}
- Type expr_type = ((TypeExpr) new_expr).ResolveType (ec);
+ TypeExpr tnew_expr = new_expr.ResolveAsTypeTerminal (ec);
+ if (tnew_expr == null)
+ return null;
+
+ Type expr_type = tnew_expr.Type;
if (expr_type.IsPointer){
Error (23, "The `.' operator can not be applied to pointer operands (" +
Expression member_lookup;
string lookup_id;
- if (args != null)
- lookup_id = Identifier + "!" + args.Count;
- else
- lookup_id = Identifier;
+ lookup_id = MemberName.MakeName (Identifier, args);
member_lookup = MemberLookupFinal (
ec, expr_type, expr_type, lookup_id, loc);
if (member_lookup == null)
if (texpr == null)
return null;
- Type t = texpr.ResolveType (ec);
- if (t == null)
+ texpr = texpr.ResolveAsTypeTerminal (ec);
+ if (texpr == null)
return null;
+ TypeArguments the_args = args;
if (TypeManager.HasGenericArguments (expr_type)) {
Type[] decl_args = TypeManager.GetTypeArguments (expr_type);
if (args != null)
new_args.Add (args);
- args = new_args;
+ the_args = new_args;
}
- if (args != null) {
- ConstructedType ctype = new ConstructedType (t, args, loc);
+ if (the_args != null) {
+ ConstructedType ctype = new ConstructedType (texpr.Type, the_args, loc);
return ctype.ResolveAsTypeStep (ec);
}
public override string ToString ()
{
- if (args != null)
- return expr + "." + Identifier + "!" + args.Count;
- else
- return expr + "." + Identifier;
+ return expr + "." + MemberName.MakeName (Identifier, args);
}
}
return true;
}
- Expression MakePointerAccess ()
+ Expression MakePointerAccess (EmitContext ec)
{
Type t = Expr.Type;
}
Expression p;
- p = new PointerArithmetic (true, Expr, ((Argument)Arguments [0]).Expr, t, loc);
- return new Indirection (p, loc);
+ p = new PointerArithmetic (true, Expr, ((Argument)Arguments [0]).Expr, t, loc).Resolve (ec);
+ if (p == null)
+ return null;
+ return new Indirection (p, loc).Resolve (ec);
}
public override Expression DoResolve (EmitContext ec)
if (t.IsArray)
return (new ArrayAccess (this, loc)).Resolve (ec);
else if (t.IsPointer)
- return MakePointerAccess ();
+ return MakePointerAccess (ec);
else
return (new IndexerAccess (this, loc)).Resolve (ec);
}
if (t.IsArray)
return (new ArrayAccess (this, loc)).ResolveLValue (ec, right_side);
else if (t.IsPointer)
- return MakePointerAccess ();
+ return MakePointerAccess (ec);
else
return (new IndexerAccess (this, loc)).ResolveLValue (ec, right_side);
}
//
ElementAccess ea;
- LocalTemporary [] cached_locations;
+ LocalTemporary temp;
+ bool prepared;
public ArrayAccess (ElementAccess ea_data, Location l)
{
if (argtype == TypeManager.int32_type ||
argtype == TypeManager.uint32_type ||
argtype == TypeManager.int64_type ||
- argtype == TypeManager.uint64_type)
+ argtype == TypeManager.uint64_type) {
+ Constant c = a.Expr as Constant;
+ if (c != null && c.IsNegative) {
+ Report.Warning (251, 2, a.Expr.Location, "Indexing an array with a negative index (array indices always start at zero)");
+ }
continue;
+ }
//
// Mhm. This is strage, because the Argument.Type is not the same as
ig.Emit (OpCodes.Ldelem_Ref);
}
- /// <summary>
- /// Emits the right opcode to store an object of Type `t'
- /// from an array of T.
- /// </summary>
- static public void EmitStoreOpcode (ILGenerator ig, Type t)
- {
- bool is_stobj, has_type_arg;
- OpCode op = GetStoreOpcode (t, out is_stobj, out has_type_arg);
- if (has_type_arg)
- ig.Emit (op, t);
- else
- ig.Emit (op);
- }
-
/// <summary>
/// Returns the right opcode to store an object of Type `t'
/// from an array of T.
//Console.WriteLine (new System.Diagnostics.StackTrace ());
has_type_arg = false; is_stobj = false;
t = TypeManager.TypeToCoreType (t);
- if (TypeManager.IsEnumType (t) && t != TypeManager.enum_type)
+ if (TypeManager.IsEnumType (t))
t = TypeManager.EnumToUnderlying (t);
if (t == TypeManager.byte_type || t == TypeManager.sbyte_type ||
t == TypeManager.bool_type)
{
ILGenerator ig = ec.ig;
- if (cached_locations == null){
- ea.Expr.Emit (ec);
- foreach (Argument a in ea.Arguments){
- Type argtype = a.Expr.Type;
-
- a.Expr.Emit (ec);
-
- if (argtype == TypeManager.int64_type)
- ig.Emit (OpCodes.Conv_Ovf_I);
- else if (argtype == TypeManager.uint64_type)
- ig.Emit (OpCodes.Conv_Ovf_I_Un);
- }
- return;
- }
-
- if (cached_locations [0] == null){
- cached_locations [0] = new LocalTemporary (ec, ea.Expr.Type);
- ea.Expr.Emit (ec);
- ig.Emit (OpCodes.Dup);
- cached_locations [0].Store (ec);
+ ea.Expr.Emit (ec);
+ foreach (Argument a in ea.Arguments){
+ Type argtype = a.Expr.Type;
- int j = 1;
+ a.Expr.Emit (ec);
- foreach (Argument a in ea.Arguments){
- Type argtype = a.Expr.Type;
-
- cached_locations [j] = new LocalTemporary (ec, TypeManager.intptr_type /* a.Expr.Type */);
- a.Expr.Emit (ec);
- if (argtype == TypeManager.int64_type)
- ig.Emit (OpCodes.Conv_Ovf_I);
- else if (argtype == TypeManager.uint64_type)
- ig.Emit (OpCodes.Conv_Ovf_I_Un);
-
- ig.Emit (OpCodes.Dup);
- cached_locations [j].Store (ec);
- j++;
- }
- return;
+ if (argtype == TypeManager.int64_type)
+ ig.Emit (OpCodes.Conv_Ovf_I);
+ else if (argtype == TypeManager.uint64_type)
+ ig.Emit (OpCodes.Conv_Ovf_I_Un);
}
-
- foreach (LocalTemporary lt in cached_locations)
- lt.Emit (ec);
}
- public new void CacheTemporaries (EmitContext ec)
- {
- cached_locations = new LocalTemporary [ea.Arguments.Count + 1];
- }
-
- public override void Emit (EmitContext ec)
+ public void Emit (EmitContext ec, bool leave_copy)
{
int rank = ea.Expr.Type.GetArrayRank ();
ILGenerator ig = ec.ig;
- LoadArrayAndArguments (ec);
-
- if (rank == 1)
- EmitLoadOpcode (ig, type);
- else {
- MethodInfo method;
+ if (!prepared) {
+ LoadArrayAndArguments (ec);
- method = FetchGetMethod ();
- ig.Emit (OpCodes.Call, method);
+ if (rank == 1)
+ EmitLoadOpcode (ig, type);
+ else {
+ MethodInfo method;
+
+ method = FetchGetMethod ();
+ ig.Emit (OpCodes.Call, method);
+ }
+ } else
+ LoadFromPtr (ec.ig, this.type);
+
+ if (leave_copy) {
+ ec.ig.Emit (OpCodes.Dup);
+ temp = new LocalTemporary (ec, this.type);
+ temp.Store (ec);
}
}
+
+ public override void Emit (EmitContext ec)
+ {
+ Emit (ec, false);
+ }
- public void EmitAssign (EmitContext ec, Expression source)
+ public void EmitAssign (EmitContext ec, Expression source, bool leave_copy, bool prepare_for_load)
{
int rank = ea.Expr.Type.GetArrayRank ();
ILGenerator ig = ec.ig;
Type t = source.Type;
+ prepared = prepare_for_load;
- LoadArrayAndArguments (ec);
-
- //
- // The stobj opcode used by value types will need
- // an address on the stack, not really an array/array
- // pair
- //
- if (rank == 1){
- if (t == TypeManager.enum_type || t == TypeManager.decimal_type ||
- (t.IsSubclassOf (TypeManager.value_type) && !TypeManager.IsEnumType (t) && !TypeManager.IsBuiltinType (t)))
- ig.Emit (OpCodes.Ldelema, t);
+ if (prepare_for_load) {
+ AddressOf (ec, AddressOp.LoadStore);
+ ec.ig.Emit (OpCodes.Dup);
+ source.Emit (ec);
+ if (leave_copy) {
+ ec.ig.Emit (OpCodes.Dup);
+ temp = new LocalTemporary (ec, this.type);
+ temp.Store (ec);
+ }
+ StoreFromPtr (ec.ig, t);
+
+ if (temp != null)
+ temp.Emit (ec);
+
+ return;
}
- source.Emit (ec);
+ LoadArrayAndArguments (ec);
- if (rank == 1)
- EmitStoreOpcode (ig, t);
- else {
+ if (rank == 1) {
+ bool is_stobj, has_type_arg;
+ OpCode op = GetStoreOpcode (t, out is_stobj, out has_type_arg);
+
+ //
+ // The stobj opcode used by value types will need
+ // an address on the stack, not really an array/array
+ // pair
+ //
+ if (is_stobj)
+ ig.Emit (OpCodes.Ldelema, t);
+
+ source.Emit (ec);
+ if (leave_copy) {
+ ec.ig.Emit (OpCodes.Dup);
+ temp = new LocalTemporary (ec, this.type);
+ temp.Store (ec);
+ }
+
+ if (is_stobj)
+ ig.Emit (OpCodes.Stobj, t);
+ else if (has_type_arg)
+ ig.Emit (op, t);
+ else
+ ig.Emit (op);
+ } else {
ModuleBuilder mb = CodeGen.Module.Builder;
int arg_count = ea.Arguments.Count;
Type [] args = new Type [arg_count + 1];
MethodInfo set;
+ source.Emit (ec);
+ if (leave_copy) {
+ ec.ig.Emit (OpCodes.Dup);
+ temp = new LocalTemporary (ec, this.type);
+ temp.Store (ec);
+ }
+
for (int i = 0; i < arg_count; i++){
//args [i++] = a.Type;
args [i] = TypeManager.int32_type;
ig.Emit (OpCodes.Call, set);
}
+
+ if (temp != null)
+ temp.Emit (ec);
}
public void AddressOf (EmitContext ec, AddressOp mode)
MemberInfo [] mi = TypeManager.MemberLookup (
caller_type, caller_type, lookup_type, MemberTypes.Property,
BindingFlags.Public | BindingFlags.Instance |
- BindingFlags.DeclaredOnly, p_name);
+ BindingFlags.DeclaredOnly, p_name, null);
if (mi == null || mi.Length == 0)
return null;
if (!lookup_type.IsInterface)
return ix;
- TypeExpr [] ifaces = TypeManager.GetInterfaces (lookup_type);
+ Type [] ifaces = TypeManager.GetInterfaces (lookup_type);
if (ifaces != null) {
- foreach (TypeExpr iface in ifaces) {
- Type itype = iface.Type;
+ foreach (Type itype in ifaces) {
MemberInfo [] mi = GetIndexersForTypeOrInterface (caller_type, itype);
if (mi != null){
if (ix == null)
UnsafeError (loc);
return null;
}
+
+ instance_expr.CheckMarshallByRefAccess (ec.ContainerType);
eclass = ExprClass.IndexerAccess;
return this;
}
}
+ instance_expr.CheckMarshallByRefAccess (ec.ContainerType);
+
eclass = ExprClass.IndexerAccess;
return this;
}
- public override void Emit (EmitContext ec)
+ bool prepared = false;
+ LocalTemporary temp;
+
+ public void Emit (EmitContext ec, bool leave_copy)
{
- Invocation.EmitCall (ec, is_base_indexer, false, instance_expr, get, arguments, loc);
+ Invocation.EmitCall (ec, is_base_indexer, false, instance_expr, get, arguments, loc, prepared, false);
+ if (leave_copy) {
+ ec.ig.Emit (OpCodes.Dup);
+ temp = new LocalTemporary (ec, Type);
+ temp.Store (ec);
+ }
}
-
+
//
// source is ignored, because we already have a copy of it from the
// LValue resolution and we have already constructed a pre-cached
// version of the arguments (ea.set_arguments);
//
- public void EmitAssign (EmitContext ec, Expression source)
+ public void EmitAssign (EmitContext ec, Expression source, bool leave_copy, bool prepare_for_load)
{
- Invocation.EmitCall (ec, is_base_indexer, false, instance_expr, set, set_arguments, loc);
+ prepared = prepare_for_load;
+ Argument a = (Argument) set_arguments [set_arguments.Count - 1];
+
+ if (prepared) {
+ source.Emit (ec);
+ if (leave_copy) {
+ ec.ig.Emit (OpCodes.Dup);
+ temp = new LocalTemporary (ec, Type);
+ temp.Store (ec);
+ }
+ } else if (leave_copy) {
+ temp = new LocalTemporary (ec, Type);
+ source.Emit (ec);
+ temp.Store (ec);
+ a.Expr = temp;
+ }
+
+ Invocation.EmitCall (ec, is_base_indexer, false, instance_expr, set, set_arguments, loc, false, prepared);
+
+ if (temp != null)
+ temp.Emit (ec);
+ }
+
+
+ public override void Emit (EmitContext ec)
+ {
+ Emit (ec, false);
}
}
pe.IsBase = true;
}
+ if (e is MethodGroupExpr)
+ ((MethodGroupExpr) e).IsBase = true;
+
return e;
}
/// is needed (the `New' class).
/// </summary>
public class EmptyExpression : Expression {
+ public static readonly EmptyExpression Null = new EmptyExpression ();
+
+ // TODO: should be protected
public EmptyExpression ()
{
type = TypeManager.object_type;
loc = l;
}
+ public Expression Source {
+ get {
+ return source;
+ }
+ }
+
public override Expression DoResolve (EmitContext ec)
{
//
loc = l;
}
- public override TypeExpr DoResolveAsTypeStep (EmitContext ec)
+ protected override TypeExpr DoResolveAsTypeStep (EmitContext ec)
{
- Type ltype = ec.DeclSpace.ResolveType (left, false, loc);
- if (ltype == null)
+ TypeExpr lexpr = left.ResolveAsTypeTerminal (ec);
+ if (lexpr == null)
return null;
+ Type ltype = lexpr.Type;
+
if ((ltype == TypeManager.void_type) && (dim != "*")) {
Report.Error (1547, Location,
"Keyword 'void' cannot be used in this context");
//
// For now, fall back to the full lookup in that case.
//
- TypeExpr texpr = RootContext.LookupType (
- ec.DeclSpace, cname, false, loc);
-
- if (texpr == null)
- return null;
-
- type = texpr.ResolveType (ec);
+ type = RootContext.LookupType (ec.DeclSpace, cname, false, loc);
if (type == null)
return null;
}
- if (!ec.ResolvingTypeTree){
- //
- // If the above flag is set, this is being invoked from the ResolveType function.
- // Upper layers take care of the type validity in this context.
- //
if (!ec.InUnsafe && type.IsPointer){
UnsafeError (loc);
return null;
}
- }
eclass = ExprClass.Type;
return this;
return null;
}
+ Constant c = count as Constant;
+ if (c != null && c.IsNegative) {
+ Report.Error (247, loc, "Cannot use a negative size with stackalloc");
+ return null;
+ }
+
if (ec.CurrentBranching.InCatch () ||
ec.CurrentBranching.InFinally (true)) {
Error (255,
return null;
}
- otype = ec.DeclSpace.ResolveType (t, false, loc);
-
- if (otype == null)
+ TypeExpr texpr = t.ResolveAsTypeTerminal (ec);
+ if (texpr == null)
return null;
+ otype = texpr.Type;
+
if (!TypeManager.VerifyUnManaged (otype, loc))
return null;
projects / mono.git / blobdiff