/// <summary>
/// Returns a stringified representation of the Operator
/// </summary>
- string OperName ()
+ static public string OperName (Operator oper)
{
switch (oper){
case Operator.UnaryPlus:
oper_names [(int) Operator.AddressOf] = "op_AddressOf";
}
- void error23 (Type t)
+ void Error23 (Type t)
{
Report.Error (
- 23, loc, "Operator " + OperName () +
+ 23, loc, "Operator " + OperName (oper) +
" cannot be applied to operand of type `" +
TypeManager.CSharpName (t) + "'");
}
case Operator.LogicalNot:
if (expr_type != TypeManager.bool_type) {
- error23 (expr_type);
+ Error23 (expr_type);
return null;
}
(expr_type == TypeManager.int64_type) ||
(expr_type == TypeManager.uint64_type) ||
(expr_type.IsSubclassOf (TypeManager.enum_type)))){
- error23 (expr_type);
+ Error23 (expr_type);
return null;
}
if (expr_type == TypeManager.uint64_type)
return new ULongConstant (~ ((ULongConstant) e).Value);
- throw new Exception (
- "FIXME: Implement constant OnesComplement of:" +
- expr_type);
+ Error23 (expr_type);
+ return null;
}
throw new Exception ("Can not constant fold");
}
op_name = oper_names [(int) oper];
- mg = MemberLookup (ec, expr_type, op_name, false, loc);
-
- if (mg == null && expr_type.BaseType != null)
- mg = MemberLookup (ec, expr_type.BaseType, op_name, false, loc);
+ mg = MemberLookup (ec, expr_type, op_name, MemberTypes.Method, AllBindingFlags, loc);
if (mg != null) {
Expression e = StaticCallExpr.MakeSimpleCall (
ec, (MethodGroupExpr) mg, expr, loc);
if (e == null){
- error23 (expr_type);
+ Error23 (expr_type);
return null;
}
if (oper == Operator.LogicalNot){
if (expr_type != TypeManager.bool_type) {
- error23 (expr.Type);
+ Error23 (expr.Type);
return null;
}
(expr_type == TypeManager.int64_type) ||
(expr_type == TypeManager.uint64_type) ||
(expr_type.IsSubclassOf (TypeManager.enum_type)))){
- error23 (expr.Type);
+ Error23 (expr.Type);
return null;
}
type = expr_type;
// -92233720368547758087 (-2^63) to be wrote as
// decimal integer literal.
//
- error23 (expr_type);
+ Error23 (expr_type);
return null;
}
return this;
}
- error23 (expr_type);
+ Error23 (expr_type);
return null;
}
Error (211, loc, "Cannot take the address of non-variables");
return null;
}
- type = Type.GetType (expr.Type.ToString () + "*");
+ if (!ec.InUnsafe) {
+ UnsafeError (loc);
+ return null;
+ }
+
+ if (!TypeManager.VerifyUnManaged (expr.Type, loc)){
+ return null;
+ }
+
+ //
+ // This construct is needed because dynamic types
+ // are not known by Type.GetType, so we have to try then to use
+ // ModuleBuilder.GetType.
+ //
+ string ptr_type_name = expr.Type.FullName + "*";
+ type = Type.GetType (ptr_type_name);
+ if (type == null)
+ type = RootContext.ModuleBuilder.GetType (ptr_type_name);
+
return this;
}
+
+ if (oper == Operator.Indirection){
+ if (!ec.InUnsafe){
+ UnsafeError (loc);
+ return null;
+ }
+
+ if (!expr_type.IsPointer){
+ Report.Error (
+ 193, loc,
+ "The * or -> operator can only be applied to pointers");
+ return null;
+ }
+
+ //
+ // We create an Indirection expression, because
+ // it can implement the IMemoryLocation.
+ //
+ return new Indirection (expr);
+ }
- Error (187, loc, "No such operator '" + OperName () + "' defined for type '" +
+ Error (187, loc, "No such operator '" + OperName (oper) + "' defined for type '" +
TypeManager.CSharpName (expr_type) + "'");
return null;
}
break;
case Operator.AddressOf:
- ((IMemoryLocation)expr).AddressOf (ec);
+ ((IMemoryLocation)expr).AddressOf (ec, AddressOp.LoadStore);
break;
- case Operator.Indirection:
- throw new Exception ("Not implemented yet");
-
default:
throw new Exception ("This should not happen: Operator = "
+ oper.ToString ());
expr.Emit (ec);
}
+
+ public override string ToString ()
+ {
+ return "Unary (" + oper + ", " + expr + ")";
+ }
}
+ //
+ // Unary operators are turned into Indirection expressions
+ // after semantic analysis (this is so we can take the address
+ // of an indirection).
+ //
+ public class Indirection : Expression, IMemoryLocation, IAssignMethod {
+ Expression expr;
+
+ public Indirection (Expression expr)
+ {
+ this.expr = expr;
+ this.type = expr.Type.GetElementType ();
+ eclass = ExprClass.Variable;
+ }
+
+ public override void Emit (EmitContext ec)
+ {
+ expr.Emit (ec);
+ LoadFromPtr (ec.ig, Type, false);
+ }
+
+ public void EmitAssign (EmitContext ec, Expression source)
+ {
+ expr.Emit (ec);
+ source.Emit (ec);
+ StoreFromPtr (ec.ig, type);
+ }
+
+ public void AddressOf (EmitContext ec, AddressOp Mode)
+ {
+ expr.Emit (ec);
+ }
+
+ public override Expression DoResolve (EmitContext ec)
+ {
+ //
+ // Born fully resolved
+ //
+ return this;
+ }
+ }
+
/// <summary>
/// Unary Mutator expressions (pre and post ++ and --)
/// </summary>
expr = e;
}
- string OperName ()
+ static string OperName (Mode mode)
{
return (mode == Mode.PreIncrement || mode == Mode.PostIncrement) ?
"++" : "--";
}
- void error23 (Type t)
+ void Error23 (Type t)
{
Report.Error (
- 23, loc, "Operator " + OperName () +
+ 23, loc, "Operator " + OperName (mode) +
" cannot be applied to operand of type `" +
TypeManager.CSharpName (t) + "'");
}
(t == TypeManager.char_type) ||
(t.IsSubclassOf (TypeManager.enum_type)) ||
(t == TypeManager.float_type) ||
- (t == TypeManager.double_type);
+ (t == TypeManager.double_type) ||
+ (t.IsPointer && t != TypeManager.void_ptr_type);
}
Expression ResolveOperator (EmitContext ec)
else
op_name = "op_Decrement";
- mg = MemberLookup (ec, expr_type, op_name, false, loc);
+ mg = MemberLookup (ec, expr_type, op_name, MemberTypes.Method, AllBindingFlags, loc);
if (mg == null && expr_type.BaseType != null)
- mg = MemberLookup (ec, expr_type.BaseType, op_name, false, loc);
+ mg = MemberLookup (ec, expr_type.BaseType, op_name,
+ MemberTypes.Method, AllBindingFlags, loc);
if (mg != null) {
method = StaticCallExpr.MakeSimpleCall (
return null;
}
- Error (187, loc, "No such operator '" + OperName () + "' defined for type '" +
+ Error (187, loc, "No such operator '" + OperName (mode) + "' defined for type '" +
TypeManager.CSharpName (expr_type) + "'");
return null;
}
eclass = ExprClass.Value;
return ResolveOperator (ec);
}
-
+ static int PtrTypeSize (Type t)
+ {
+ return GetTypeSize (t.GetElementType ());
+ }
+
+
//
// FIXME: We need some way of avoiding the use of temp_storage
// for some types of storage (parameters, local variables,
{
ILGenerator ig = ec.ig;
IAssignMethod ia = (IAssignMethod) expr;
-
- if (temp_storage == null)
- temp_storage = new LocalTemporary (ec, expr.Type);
+ Type expr_type = expr.Type;
+ if (temp_storage == null)
+ temp_storage = new LocalTemporary (ec, expr_type);
+
switch (mode){
case Mode.PreIncrement:
case Mode.PreDecrement:
if (method == null){
expr.Emit (ec);
- ig.Emit (OpCodes.Ldc_I4_1);
+ if (expr_type == TypeManager.uint64_type ||
+ expr_type == TypeManager.int64_type)
+ ig.Emit (OpCodes.Ldc_I8, 1L);
+ else if (expr_type == TypeManager.double_type)
+ ig.Emit (OpCodes.Ldc_R8, 1.0);
+ else if (expr_type == TypeManager.float_type)
+ ig.Emit (OpCodes.Ldc_R4, 1.0F);
+ else if (expr_type.IsPointer){
+ int n = PtrTypeSize (expr_type);
+
+ if (n == 0)
+ ig.Emit (OpCodes.Sizeof, expr_type);
+ else
+ IntConstant.EmitInt (ig, n);
+ } else
+ ig.Emit (OpCodes.Ldc_I4_1);
if (mode == Mode.PreDecrement)
ig.Emit (OpCodes.Sub);
else
ig.Emit (OpCodes.Dup);
- ig.Emit (OpCodes.Ldc_I4_1);
+ if (expr_type == TypeManager.uint64_type ||
+ expr_type == TypeManager.int64_type)
+ ig.Emit (OpCodes.Ldc_I8, 1L);
+ else if (expr_type == TypeManager.double_type)
+ ig.Emit (OpCodes.Ldc_R8, 1.0);
+ else if (expr_type == TypeManager.float_type)
+ ig.Emit (OpCodes.Ldc_R4, 1.0F);
+ else if (expr_type.IsPointer){
+ int n = PtrTypeSize (expr_type);
+
+ if (n == 0)
+ ig.Emit (OpCodes.Sizeof, expr_type);
+ else
+ IntConstant.EmitInt (ig, n);
+ } else
+ ig.Emit (OpCodes.Ldc_I4_1);
if (mode == Mode.PostDecrement)
ig.Emit (OpCodes.Sub);
public readonly string ProbeType;
protected Expression expr;
protected Type probe_type;
- Location loc;
+ protected Location loc;
public Probe (Expression expr, string probe_type, Location l)
{
if (e == null)
return null;
+ if (RootContext.WarningLevel >= 1){
+ if (expr.Type == probe_type || expr.Type.IsSubclassOf (probe_type)){
+ Report.Warning (
+ 183, loc,
+ "The expression is always of type `" +
+ TypeManager.CSharpName (probe_type) + "'");
+ }
+
+ if (expr.Type != probe_type && !probe_type.IsSubclassOf (expr.Type)){
+ if (!probe_type.IsInterface)
+ Report.Warning (
+ 184, loc,
+ "The expression is never of type `" +
+ TypeManager.CSharpName (probe_type) + "'");
+ }
+ }
+
type = TypeManager.bool_type;
eclass = ExprClass.Value;
/// <summary>
/// Returns a stringified representation of the Operator
/// </summary>
- string OperName ()
+ static string OperName (Operator oper)
{
switch (oper){
case Operator.Multiply:
return ConvertImplicit (ec, expr, target_type, new Location (-1));
}
-
+
+ public static void Error_OperatorAmbiguous (Location loc, Operator oper, Type l, Type r)
+ {
+ Report.Error (
+ 34, loc, "Operator `" + OperName (oper)
+ + "' is ambiguous on operands of type `"
+ + TypeManager.CSharpName (l) + "' "
+ + "and `" + TypeManager.CSharpName (r)
+ + "'");
+ }
+
//
// Note that handling the case l == Decimal || r == Decimal
// is taken care of by the Step 1 Operator Overload resolution.
type = TypeManager.double_type;
} else if (l == TypeManager.float_type || r == TypeManager.float_type){
//
- // if either operand is of type float, th eother operand is
- // converd to type float.
+ // if either operand is of type float, the other operand is
+ // converted to type float.
//
if (r != TypeManager.double_type)
right = ConvertImplicit (ec, right, TypeManager.float_type, loc);
// converted to type ulong. or an error ocurrs if the other
// operand is of type sbyte, short, int or long
//
-
if (l == TypeManager.uint64_type){
if (r != TypeManager.uint64_type){
if (right is IntConstant){
- e = TryImplicitIntConversion(l, (IntConstant) right);
+ IntConstant ic = (IntConstant) right;
+
+ e = TryImplicitIntConversion (l, ic);
if (e != null)
right = e;
} else if (right is LongConstant){
if (ll > 0)
right = new ULongConstant ((ulong) ll);
+ } else {
+ e = ImplicitNumericConversion (ec, right, l, loc);
+ if (e != null)
+ right = e;
}
}
other = right.Type;
left = e;
} else if (left is LongConstant){
long ll = ((LongConstant) left).Value;
-
+
if (ll > 0)
left = new ULongConstant ((ulong) ll);
+ } else {
+ e = ImplicitNumericConversion (ec, left, r, loc);
+ if (e != null)
+ left = e;
}
other = left.Type;
}
if ((other == TypeManager.sbyte_type) ||
(other == TypeManager.short_type) ||
(other == TypeManager.int32_type) ||
- (other == TypeManager.int64_type)){
- string oper = OperName ();
-
- Error (34, loc, "Operator `" + OperName ()
- + "' is ambiguous on operands of type `"
- + TypeManager.CSharpName (l) + "' "
- + "and `" + TypeManager.CSharpName (r)
- + "'");
- }
+ (other == TypeManager.int64_type))
+ Error_OperatorAmbiguous (loc, oper, l, r);
type = TypeManager.uint64_type;
} else if (l == TypeManager.int64_type || r == TypeManager.int64_type){
//
//
Type other = null;
- if (l == TypeManager.uint32_type)
+ if (l == TypeManager.uint32_type){
+ if (right is IntConstant){
+ IntConstant ic = (IntConstant) right;
+ int val = ic.Value;
+
+ if (val >= 0)
+ right = new UIntConstant ((uint) val);
+
+ type = l;
+ return true;
+ }
other = r;
- else if (r == TypeManager.uint32_type)
+ }
+ else if (r == TypeManager.uint32_type){
+ if (left is IntConstant){
+ IntConstant ic = (IntConstant) left;
+ int val = ic.Value;
+
+ if (val >= 0)
+ left = new UIntConstant ((uint) val);
+
+ type = r;
+ return true;
+ }
+
other = l;
+ }
if ((other == TypeManager.sbyte_type) ||
(other == TypeManager.short_type) ||
return true;
}
- void error19 ()
+ static public void Error_OperatorCannotBeApplied (Location loc, string name, Type l, Type r)
{
Error (19, loc,
- "Operator " + OperName () + " cannot be applied to operands of type `" +
- TypeManager.CSharpName (left.Type) + "' and `" +
- TypeManager.CSharpName (right.Type) + "'");
-
+ "Operator " + name + " cannot be applied to operands of type `" +
+ TypeManager.CSharpName (l) + "' and `" +
+ TypeManager.CSharpName (r) + "'");
}
+ void error19 ()
+ {
+ Error_OperatorCannotBeApplied (loc, OperName (oper), left.Type, right.Type);
+ }
+
+ static bool is_32_or_64 (Type t)
+ {
+ return (t == TypeManager.int32_type || t == TypeManager.uint32_type ||
+ t == TypeManager.int64_type || t == TypeManager.uint64_type);
+ }
+
Expression CheckShiftArguments (EmitContext ec)
{
Expression e;
string op = "op_" + oper;
- left_expr = MemberLookup (ec, l, op, false, loc);
- if (left_expr == null && l.BaseType != null)
- left_expr = MemberLookup (ec, l.BaseType, op, false, loc);
-
- right_expr = MemberLookup (ec, r, op, false, loc);
- if (right_expr == null && r.BaseType != null)
- right_expr = MemberLookup (ec, r.BaseType, op, false, loc);
-
- MethodGroupExpr union = Invocation.MakeUnionSet (left_expr, right_expr);
+ MethodGroupExpr union;
+ left_expr = MemberLookup (ec, l, op, MemberTypes.Method, AllBindingFlags, loc);
+ if (r != l){
+ right_expr = MemberLookup (
+ ec, r, op, MemberTypes.Method, AllBindingFlags, loc);
+ union = Invocation.MakeUnionSet (left_expr, right_expr);
+ } else
+ union = (MethodGroupExpr) left_expr;
if (union != null) {
Arguments = new ArrayList ();
method = Invocation.OverloadResolve (ec, union, Arguments, loc);
if (method != null) {
MethodInfo mi = (MethodInfo) method;
+
type = mi.ReturnType;
return this;
} else {
// If any of the arguments is a string, cast to string
//
if (l == TypeManager.string_type){
+
+ if (r == TypeManager.void_type) {
+ error19 ();
+ return null;
+ }
+
if (r == TypeManager.string_type){
if (left is Constant && right is Constant){
StringConstant ls = (StringConstant) left;
} else if (r == TypeManager.string_type){
// object + string
+
+ if (l == TypeManager.void_type) {
+ error19 ();
+ return null;
+ }
+
method = TypeManager.string_concat_object_object;
+ left = ConvertImplicit (ec, left, TypeManager.object_type, loc);
Arguments = new ArrayList ();
Arguments.Add (new Argument (left, Argument.AType.Expression));
Arguments.Add (new Argument (right, Argument.AType.Expression));
- left = ConvertImplicit (ec, left, TypeManager.object_type, loc);
type = TypeManager.string_type;
return this;
type = l;
return this;
}
+
+ //
+ // Pointer arithmetic:
+ //
+ // T* operator + (T* x, int y);
+ // T* operator + (T* x, uint y);
+ // T* operator + (T* x, long y);
+ // T* operator + (T* x, ulong y);
+ //
+ // T* operator + (int y, T* x);
+ // T* operator + (uint y, T *x);
+ // T* operator + (long y, T *x);
+ // T* operator + (ulong y, T *x);
+ //
+ // T* operator - (T* x, int y);
+ // T* operator - (T* x, uint y);
+ // T* operator - (T* x, long y);
+ // T* operator - (T* x, ulong y);
+ //
+ // long operator - (T* x, T *y)
+ //
+ if (l.IsPointer){
+ if (r.IsPointer && oper == Operator.Subtraction){
+ if (r == l)
+ return new PointerArithmetic (
+ false, left, right, TypeManager.int64_type);
+ } else if (is_32_or_64 (r))
+ return new PointerArithmetic (
+ oper == Operator.Addition, left, right, l);
+ } else if (r.IsPointer && is_32_or_64 (l) && oper == Operator.Addition)
+ return new PointerArithmetic (
+ true, right, left, r);
}
//
}
}
+ //
+ // Pointer comparison
+ //
+ if (l.IsPointer && r.IsPointer){
+ if (oper == Operator.Equality || oper == Operator.Inequality ||
+ oper == Operator.LessThan || oper == Operator.LessThanOrEqual ||
+ oper == Operator.GreaterThan || oper == Operator.GreaterThanOrEqual){
+ type = TypeManager.bool_type;
+ return this;
+ }
+ }
+
//
// We are dealing with numbers
//
return this;
}
- /// <summary>
- /// Constant expression reducer for binary operations
- /// </summary>
- public Expression ConstantFold (EmitContext ec)
- {
- object l = ((Constant) left).GetValue ();
- object r = ((Constant) right).GetValue ();
-
- if (l is string && r is string)
- return new StringConstant ((string) l + (string) r);
-
- Type result_type = null;
-
- //
- // Enumerator folding
- //
- if (left.Type == right.Type && left is EnumConstant)
- result_type = left.Type;
-
- switch (oper){
- case Operator.BitwiseOr:
- if ((l is int) && (r is int)){
- IntConstant v;
- int res = (int)l | (int)r;
-
- v = new IntConstant (res);
- if (result_type == null)
- return v;
- else
- return new EnumConstant (v, result_type);
- }
- break;
-
- case Operator.BitwiseAnd:
- if ((l is int) && (r is int)){
- IntConstant v;
- int res = (int)l & (int)r;
-
- v = new IntConstant (res);
- if (result_type == null)
- return v;
- else
- return new EnumConstant (v, result_type);
- }
- break;
- }
-
- return null;
- }
-
public override Expression DoResolve (EmitContext ec)
{
left = left.Resolve (ec);
eclass = ExprClass.Value;
if (left is Constant && right is Constant){
- //
- // This is temporary until we do the full folding
- //
- Expression e = ConstantFold (ec);
+ Expression e = ConstantFold.BinaryFold (
+ ec, oper, (Constant) left, (Constant) right, loc);
if (e != null)
return e;
}
}
}
+ public class PointerArithmetic : Expression {
+ Expression left, right;
+ bool is_add;
+
+ //
+ // We assume that `l' is always a pointer
+ //
+ public PointerArithmetic (bool is_addition, Expression l, Expression r, Type t)
+ {
+ type = t;
+ eclass = ExprClass.Variable;
+ left = l;
+ right = r;
+ is_add = is_addition;
+ }
+
+ public override Expression DoResolve (EmitContext ec)
+ {
+ //
+ // We are born fully resolved
+ //
+ return this;
+ }
+
+ public override void Emit (EmitContext ec)
+ {
+ Type op_type = left.Type;
+ ILGenerator ig = ec.ig;
+ int size = GetTypeSize (op_type.GetElementType ());
+
+ if (right.Type.IsPointer){
+ //
+ // handle (pointer - pointer)
+ //
+ left.Emit (ec);
+ right.Emit (ec);
+ ig.Emit (OpCodes.Sub);
+
+ if (size != 1){
+ if (size == 0)
+ ig.Emit (OpCodes.Sizeof, op_type);
+ else
+ IntLiteral.EmitInt (ig, size);
+ ig.Emit (OpCodes.Div);
+ }
+ ig.Emit (OpCodes.Conv_I8);
+ } else {
+ //
+ // handle + and - on (pointer op int)
+ //
+ left.Emit (ec);
+ ig.Emit (OpCodes.Conv_I);
+ right.Emit (ec);
+ if (size != 1){
+ if (size == 0)
+ ig.Emit (OpCodes.Sizeof, op_type);
+ else
+ IntLiteral.EmitInt (ig, size);
+ ig.Emit (OpCodes.Mul);
+ }
+ if (is_add)
+ ig.Emit (OpCodes.Add);
+ else
+ ig.Emit (OpCodes.Sub);
+ }
+ }
+ }
+
/// <summary>
/// Implements the ternary conditiona operator (?:)
/// </summary>
if (expr == null || trueExpr == null || falseExpr == null)
return null;
+ eclass = ExprClass.Value;
if (trueExpr.Type == falseExpr.Type)
type = trueExpr.Type;
else {
Expression conv;
+ 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
//
- conv = ConvertImplicit (ec, trueExpr, falseExpr.Type, loc);
+ conv = ConvertImplicit (ec, trueExpr, false_type, loc);
if (conv != null){
- type = falseExpr.Type;
+ //
+ // Check if both can convert implicitl to each other's type
+ //
+ if (ConvertImplicit (ec, falseExpr, true_type, loc) != null){
+ Report.Error (
+ 172, loc,
+ "Can not compute type of conditional expression " +
+ "as `" + TypeManager.CSharpName (trueExpr.Type) +
+ "' and `" + TypeManager.CSharpName (falseExpr.Type) +
+ "' convert implicitly to each other");
+ return null;
+ }
+ type = false_type;
trueExpr = conv;
- } else if ((conv = ConvertImplicit(ec, falseExpr,trueExpr.Type,loc))!= null){
- type = trueExpr.Type;
+ } else if ((conv = ConvertImplicit(ec, falseExpr, true_type,loc))!= null){
+ type = true_type;
falseExpr = conv;
} else {
Error (173, loc, "The type of the conditional expression can " +
return falseExpr;
}
- eclass = ExprClass.Value;
return this;
}
if (Block.IsConstant (Name)) {
Expression e = Block.GetConstantExpression (Name);
- e = e.Resolve (ec);
- if (e == null)
- return null;
-
- if (!(e is Constant)) {
- Report.Error (150, loc, "A constant value is expected");
- return null;
- }
-
vi.Used = true;
return e;
}
Store (ig, vi.Idx);
}
- public void AddressOf (EmitContext ec)
+ public void AddressOf (EmitContext ec, AddressOp mode)
{
VariableInfo vi = VariableInfo;
int idx = vi.Idx;
- vi.Used = true;
- vi.Assigned = true;
+ if ((mode & AddressOp.Load) != 0)
+ vi.Used = true;
+ if ((mode & AddressOp.Store) != 0)
+ vi.Assigned = true;
if (idx <= 255)
ec.ig.Emit (OpCodes.Ldloca_S, (byte) idx);
Parameters pars;
String name;
int idx;
- bool is_ref;
+ public bool is_ref;
public ParameterReference (Parameters pars, int idx, string name)
{
{
type = pars.GetParameterInfo (ec.TypeContainer, idx, out is_ref);
eclass = ExprClass.Variable;
-
+
return this;
}
+ //
+ // This method is used by parameters that are references, that are
+ // being passed as references: we only want to pass the pointer (that
+ // is already stored in the parameter, not the address of the pointer,
+ // and not the value of the variable).
+ //
+ public void EmitLoad (EmitContext ec)
+ {
+ ILGenerator ig = ec.ig;
+ int arg_idx = idx;
+
+ if (!ec.IsStatic)
+ arg_idx++;
+
+ if (arg_idx <= 255)
+ ig.Emit (OpCodes.Ldarg_S, (byte) arg_idx);
+ else
+ ig.Emit (OpCodes.Ldarg, arg_idx);
+ }
+
public override void Emit (EmitContext ec)
{
ILGenerator ig = ec.ig;
// If we are a reference, we loaded on the stack a pointer
// Now lets load the real value
//
-
- if (type == TypeManager.int32_type)
- ig.Emit (OpCodes.Ldind_I4);
- else if (type == TypeManager.uint32_type)
- ig.Emit (OpCodes.Ldind_U4);
- else if (type == TypeManager.int64_type || type == TypeManager.uint64_type)
- ig.Emit (OpCodes.Ldind_I8);
- else if (type == TypeManager.char_type)
- ig.Emit (OpCodes.Ldind_U2);
- else if (type == TypeManager.short_type)
- ig.Emit (OpCodes.Ldind_I2);
- else if (type == TypeManager.ushort_type)
- ig.Emit (OpCodes.Ldind_U2);
- else if (type == TypeManager.float_type)
- ig.Emit (OpCodes.Ldind_R4);
- else if (type == TypeManager.double_type)
- ig.Emit (OpCodes.Ldind_R8);
- else if (type == TypeManager.byte_type)
- ig.Emit (OpCodes.Ldind_U1);
- else if (type == TypeManager.sbyte_type)
- ig.Emit (OpCodes.Ldind_I1);
- else if (type == TypeManager.intptr_type)
- ig.Emit (OpCodes.Ldind_I);
- else
- ig.Emit (OpCodes.Ldind_Ref);
- }
+ LoadFromPtr (ig, type, true);
+ }
public void EmitAssign (EmitContext ec, Expression source)
{
source.Emit (ec);
- if (is_ref){
- if (type == TypeManager.int32_type || type == TypeManager.uint32_type)
- ig.Emit (OpCodes.Stind_I4);
- else if (type == TypeManager.int64_type || type == TypeManager.uint64_type)
- ig.Emit (OpCodes.Stind_I8);
- else if (type == TypeManager.char_type || type == TypeManager.short_type ||
- type == TypeManager.ushort_type)
- ig.Emit (OpCodes.Stind_I2);
- else if (type == TypeManager.float_type)
- ig.Emit (OpCodes.Stind_R4);
- else if (type == TypeManager.double_type)
- ig.Emit (OpCodes.Stind_R8);
- else if (type == TypeManager.byte_type || type == TypeManager.sbyte_type)
- ig.Emit (OpCodes.Stind_I1);
- else if (type == TypeManager.intptr_type)
- ig.Emit (OpCodes.Stind_I);
- else
- ig.Emit (OpCodes.Stind_Ref);
- } else {
+ if (is_ref)
+ StoreFromPtr (ig, type);
+ else {
if (arg_idx <= 255)
ig.Emit (OpCodes.Starg_S, (byte) arg_idx);
else
}
- public void AddressOf (EmitContext ec)
+ public void AddressOf (EmitContext ec, AddressOp mode)
{
int arg_idx = idx;
public Parameter.Modifier GetParameterModifier ()
{
- if (ArgType == AType.Ref)
- return Parameter.Modifier.REF;
-
- if (ArgType == AType.Out)
+ if (ArgType == AType.Ref || ArgType == AType.Out)
return Parameter.Modifier.OUT;
return Parameter.Modifier.NONE;
return expr != null;
if (expr.eclass != ExprClass.Variable){
- Report.Error (206, loc,
- "A property or indexer can not be passed as an out or ref " +
- "parameter");
+ //
+ // We just probe to match the CSC output
+ //
+ if (expr.eclass == ExprClass.PropertyAccess ||
+ expr.eclass == ExprClass.IndexerAccess){
+ Report.Error (
+ 206, loc,
+ "A property or indexer can not be passed as an out or ref " +
+ "parameter");
+ } else {
+ Report.Error (
+ 1510, loc,
+ "An lvalue is required as an argument to out or ref");
+ }
return false;
}
public void Emit (EmitContext ec)
{
- if (ArgType == AType.Ref || ArgType == AType.Out)
- ((IMemoryLocation)expr).AddressOf (ec);
- else
+ //
+ // Ref and Out parameters need to have their addresses taken.
+ //
+ // ParameterReferences might already be references, so we want
+ // to pass just the value
+ //
+ if (ArgType == AType.Ref || ArgType == AType.Out){
+ AddressOp mode = AddressOp.Store;
+
+ if (ArgType == AType.Ref)
+ mode |= AddressOp.Load;
+
+ if (expr is ParameterReference){
+ ParameterReference pr = (ParameterReference) expr;
+
+ if (pr.is_ref)
+ pr.EmitLoad (ec);
+ else {
+
+ pr.AddressOf (ec, mode);
+ }
+ } else
+ ((IMemoryLocation)expr).AddressOf (ec, mode);
+ } else
expr.Emit (ec);
}
}
Expression expr;
MethodBase method = null;
-
+ bool is_base;
+
static Hashtable method_parameter_cache;
static Invocation ()
}
}
- /// <summary>
- /// Tells whether a user defined conversion from Type `from' to
- /// Type `to' exists.
- ///
- /// FIXME: we could implement a cache here.
- /// </summary>
- static bool ConversionExists (EmitContext ec, Type from, Type to, Location loc)
- {
- // Locate user-defined implicit operators
-
- Expression mg;
-
- mg = MemberLookup (ec, to, "op_Implicit", false, loc);
-
- if (mg != null) {
- MethodGroupExpr me = (MethodGroupExpr) mg;
-
- for (int i = me.Methods.Length; i > 0;) {
- i--;
- MethodBase mb = me.Methods [i];
- ParameterData pd = GetParameterData (mb);
-
- if (from == pd.ParameterType (0))
- return true;
- }
- }
-
- mg = MemberLookup (ec, from, "op_Implicit", false, loc);
-
- if (mg != null) {
- MethodGroupExpr me = (MethodGroupExpr) mg;
-
- for (int i = me.Methods.Length; i > 0;) {
- i--;
- MethodBase mb = me.Methods [i];
- MethodInfo mi = (MethodInfo) mb;
-
- if (mi.ReturnType == to)
- return true;
- }
- }
-
- return false;
- }
-
/// <summary>
/// Determines "better conversion" as specified in 7.4.2.3
/// Returns : 1 if a->p is better
}
if (q == null) {
-
- Expression tmp;
-
- tmp = ConvertImplicitStandard (ec, argument_expr, p, loc);
+ Expression tmp = ConvertImplicitStandard (ec, argument_expr, p, loc);
if (tmp != null)
return 1;
else
return 0;
-
}
- if (ConversionExists (ec, p, q, loc) == true &&
- ConversionExists (ec, q, p, loc) == false)
+ if (StandardConversionExists (p, q) == true &&
+ StandardConversionExists (q, p) == false)
return 1;
if (p == TypeManager.sbyte_type)
else
argument_count = args.Count;
- if (candidate_pd.Count == 0 && argument_count == 0)
+ int cand_count = candidate_pd.Count;
+
+ if (cand_count == 0 && argument_count == 0)
return 1;
- if (candidate_pd.ParameterModifier (candidate_pd.Count - 1) != Parameter.Modifier.PARAMS)
- if (candidate_pd.Count != argument_count)
+ if (candidate_pd.ParameterModifier (cand_count - 1) != Parameter.Modifier.PARAMS)
+ 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 = argument_count; j > 0;) {
j--;
-
+
Argument a = (Argument) args [j];
Type t = candidate_pd.ParameterType (j);
if (candidate_pd.ParameterModifier (j) == Parameter.Modifier.PARAMS)
if (expanded_form)
t = t.GetElementType ();
-
+
x = BetterConversion (ec, a, t, null, loc);
if (x <= 0)
x = BetterConversion (ec, a, ct, bt, loc);
y = BetterConversion (ec, a, bt, ct, loc);
-
+
if (x < y)
- break;
+ return 0;
rating1 += x;
rating2 += y;
public static string FullMethodDesc (MethodBase mb)
{
- StringBuilder sb = new StringBuilder (mb.Name);
+ string ret_type = "";
+
+ if (mb is MethodInfo)
+ ret_type = TypeManager.CSharpName (((MethodInfo) mb).ReturnType);
+
+ StringBuilder sb = new StringBuilder (ret_type + " " + mb.Name);
ParameterData pd = GetParameterData (mb);
int count = pd.Count;
if (pd_count - 1 > arg_count)
return false;
-
+
+ if (pd_count == 1 && arg_count == 0)
+ return true;
+
//
// If we have come this far, the case which remains is when the number of parameters
- // is less than or equal to the argument count. So, we now check if the element type
- // of the params array is compatible with each argument type
- //
+ // is less than or equal to the argument count.
+
+ for (int i = 0; i < pd_count - 1; ++i) {
+
+ Argument a = (Argument) arguments [i];
+
+ Parameter.Modifier a_mod = a.GetParameterModifier ();
+ Parameter.Modifier p_mod = pd.ParameterModifier (i);
+
+ if (a_mod == p_mod) {
+
+ if (a_mod == Parameter.Modifier.NONE)
+ if (!StandardConversionExists (a.Type, pd.ParameterType (i)))
+ return false;
+
+ if (a_mod == Parameter.Modifier.REF ||
+ a_mod == Parameter.Modifier.OUT)
+ if (pd.ParameterType (i) != a.Type)
+ return false;
+ } else
+ return false;
+
+ }
Type element_type = pd.ParameterType (pd_count - 1).GetElementType ();
- for (int i = pd_count - 1; i < arg_count - 1; i++) {
+ for (int i = pd_count - 1; i < arg_count; i++) {
Argument a = (Argument) arguments [i];
if (!StandardConversionExists (a.Type, element_type))
/// loc: The location if we want an error to be reported, or a Null
/// location for "probing" purposes.
///
- /// use_standard: controls whether OverloadResolve should use the
- /// ConvertImplicit or ConvertImplicitStandard during overload resolution.
- ///
/// Returns: The MethodBase (either a ConstructorInfo or a MethodInfo)
/// that is the best match of me on Arguments.
///
continue;
candidates.Add (candidate);
+
x = BetterFunction (ec, Arguments, candidate, method, false, loc);
if (x == 0)
for (int i = 0; i < candidates.Count; ++i) {
MethodBase candidate = (MethodBase) candidates [i];
-
+
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 (Arguments, candidate) &&
+ IsApplicable (Arguments, method))
+ continue;
+
int x = BetterFunction (ec, Arguments, method, candidate,
chose_params_expanded, loc);
if (x != 1) {
- Console.WriteLine (candidate + " " + method);
+ //Console.WriteLine ("Candidate : " + FullMethodDesc (candidate));
+ //Console.WriteLine ("Best : " + FullMethodDesc (method));
Report.Error (
121, loc,
"Ambiguous call when selecting function due to implicit casts");
- return null;
+ return null;
}
}
if (a.GetParameterModifier () != pd.ParameterModifier (j) &&
pd.ParameterModifier (pd_count - 1) != Parameter.Modifier.PARAMS) {
if (!Location.IsNull (loc)) {
+ Console.WriteLine ("A:P: " + a.GetParameterModifier ());
+ Console.WriteLine ("PP:: " + pd.ParameterModifier (j));
+ Console.WriteLine ("PT: " + parameter_type.IsByRef);
Error (1502, loc,
"The best overloaded match for method '" + FullMethodDesc (method)+
"' has some invalid arguments");
// First, resolve the expression that is used to
// trigger the invocation
//
+ if (expr is BaseAccess)
+ is_base = true;
+
expr = expr.Resolve (ec);
if (expr == null)
return null;
if (method is MethodInfo)
type = ((MethodInfo)method).ReturnType;
+ if (type.IsPointer){
+ if (!ec.InUnsafe){
+ UnsafeError (loc);
+ return null;
+ }
+ }
+
eclass = ExprClass.Value;
return this;
}
}
}
- public static void EmitCall (EmitContext ec,
+ /// <remarks>
+ /// is_base tells whether we want to force the use of the `call'
+ /// opcode instead of using callvirt. Call is required to call
+ /// a specific method, while callvirt will always use the most
+ /// recent method in the vtable.
+ ///
+ /// is_static tells whether this is an invocation on a static method
+ ///
+ /// instance_expr is an expression that represents the instance
+ /// it must be non-null if is_static is false.
+ ///
+ /// method is the method to invoke.
+ ///
+ /// Arguments is the list of arguments to pass to the method or constructor.
+ /// </remarks>
+ public static void EmitCall (EmitContext ec, bool is_base,
bool is_static, Expression instance_expr,
MethodBase method, ArrayList Arguments)
{
bool struct_call = false;
if (!is_static){
+
+ if (method.DeclaringType.IsValueType)
+ struct_call = true;
//
// If this is ourselves, push "this"
//
// reference-type with a value-type argument need
// to have their value boxed.
+ struct_call = true;
if (method.DeclaringType.IsValueType){
- struct_call = true;
-
//
// If the expression implements IMemoryLocation, then
// we can optimize and use AddressOf on the
// it.
if (instance_expr is IMemoryLocation){
((IMemoryLocation)instance_expr).
- AddressOf (ec);
+ AddressOf (ec, AddressOp.LoadStore);
}
else {
Type t = instance_expr.Type;
if (Arguments != null)
EmitArguments (ec, method, Arguments);
- if (is_static || struct_call){
+ if (is_static || struct_call || is_base){
if (method is MethodInfo)
ig.Emit (OpCodes.Call, (MethodInfo) method);
else
{
MethodGroupExpr mg = (MethodGroupExpr) this.expr;
- EmitCall (ec, method.IsStatic, mg.InstanceExpression, method, Arguments);
+ EmitCall (ec, is_base, method.IsStatic, mg.InstanceExpression, method, Arguments);
}
public override void EmitStatement (EmitContext ec)
return this;
Expression ml;
- ml = MemberLookup (ec, type, ".ctor", false,
- MemberTypes.Constructor, AllBindingFlags, loc);
+ ml = MemberLookup (ec, type, ".ctor", MemberTypes.Constructor, AllBindingFlags, loc);
if (! (ml is MethodGroupExpr)){
if (!is_struct){
return null;
}
}
-
+
method = Invocation.OverloadResolve (ec, (MethodGroupExpr) ml,
Arguments, loc);
+
}
if (method == null && !is_struct) {
//
bool DoEmit (EmitContext ec, bool need_value_on_stack)
{
- if (method == null){
+ bool is_value_type = type.IsSubclassOf (TypeManager.value_type);
+ ILGenerator ig = ec.ig;
+
+ if (is_value_type){
IMemoryLocation ml;
if (value_target == null)
value_target = new LocalTemporary (ec, type);
-
+
ml = (IMemoryLocation) value_target;
- ml.AddressOf (ec);
- } else {
- Invocation.EmitArguments (ec, method, Arguments);
- ec.ig.Emit (OpCodes.Newobj, (ConstructorInfo) method);
- return true;
+ ml.AddressOf (ec, AddressOp.Store);
}
- //
- // It must be a value type, sanity check
- //
- if (value_target != null){
- ec.ig.Emit (OpCodes.Initobj, type);
+ if (method != null)
+ Invocation.EmitArguments (ec, method, Arguments);
+
+ if (is_value_type){
+ if (method == null)
+ ig.Emit (OpCodes.Initobj, type);
+ else
+ ig.Emit (OpCodes.Call, (ConstructorInfo) method);
if (need_value_on_stack){
value_target.Emit (ec);
return true;
}
return false;
+ } else {
+ ig.Emit (OpCodes.Newobj, (ConstructorInfo) method);
+ return true;
}
-
- throw new Exception ("No method and no value type");
}
public override void Emit (EmitContext ec)
Hashtable Bounds;
+ //
+ // The number of array initializers that we can handle
+ // via the InitializeArray method - through EmitStaticInitializers
+ //
+ int num_automatic_initializers;
+
public ArrayCreation (string requested_type, ArrayList exprs,
string rank, ArrayList initializers, Location l)
{
foreach (Expression e in exprs)
Arguments.Add (new Argument (e, Argument.AType.Expression));
-
}
public ArrayCreation (string requested_type, string rank, ArrayList initializers, Location l)
if (conv is StringConstant)
ArrayData.Add (conv);
- else if (conv is Constant)
- ArrayData.Add (((Constant) conv).GetValue ());
- else
+ else if (conv is Constant) {
+ ArrayData.Add (conv);
+ num_automatic_initializers++;
+ } else
ArrayData.Add (conv);
}
}
{
int arg_count;
+ //
+ // First step is to validate the initializers and fill
+ // in any missing bits
+ //
if (!ValidateInitializers (ec))
return null;
IsBuiltinType = TypeManager.IsBuiltinType (type);
if (IsBuiltinType) {
-
+
Expression ml;
- ml = MemberLookup (ec, type, ".ctor", false, MemberTypes.Constructor,
+ ml = MemberLookup (ec, type, ".ctor", MemberTypes.Constructor,
AllBindingFlags, loc);
if (!(ml is MethodGroupExpr)){
}
method = Invocation.OverloadResolve (ec, (MethodGroupExpr) ml, Arguments, loc);
-
+
if (method == null) {
Report.Error (-6, loc, "New invocation: Can not find a constructor for " +
"this argument list");
return this;
} else {
+
ModuleBuilder mb = RootContext.ModuleBuilder;
ArrayList args = new ArrayList ();
method = mb.GetArrayMethod (type, ".ctor", CallingConventions.HasThis, null,
arg_types);
-
+
if (method == null) {
Report.Error (-6, loc, "New invocation: Can not find a constructor for " +
"this argument list");
{
int factor;
byte [] data;
-
+ byte [] element;
int count = ArrayData.Count;
- if (underlying_type == TypeManager.int32_type ||
- underlying_type == TypeManager.uint32_type ||
- underlying_type == TypeManager.float_type)
- factor = 4;
- else if (underlying_type == TypeManager.int64_type ||
- underlying_type == TypeManager.uint64_type ||
- underlying_type == TypeManager.double_type)
- factor = 8;
- else if (underlying_type == TypeManager.byte_type ||
- underlying_type == TypeManager.sbyte_type ||
- underlying_type == TypeManager.bool_type)
- factor = 1;
- else if (underlying_type == TypeManager.short_type ||
- underlying_type == TypeManager.char_type ||
- underlying_type == TypeManager.ushort_type)
- factor = 2;
- else
+ factor = GetTypeSize (underlying_type);
+ if (factor == 0)
return null;
- data = new byte [count * factor];
+ data = new byte [(count * factor + 4) & ~3];
int idx = 0;
for (int i = 0; i < count; ++i) {
if (v is EnumConstant)
v = ((EnumConstant) v).Child;
+
+ if (v is Constant && !(v is StringConstant))
+ v = ((Constant) v).GetValue ();
+ else {
+ idx += factor;
+ continue;
+ }
+
+ if (underlying_type == TypeManager.int64_type){
+ if (!(v is Expression)){
+ long val = (long) v;
+
+ for (int j = 0; j < factor; ++j) {
+ data [idx + j] = (byte) (val & 0xFF);
+ val = (val >> 8);
+ }
+ }
+ } else if (underlying_type == TypeManager.uint64_type){
+ if (!(v is Expression)){
+ ulong val = (ulong) v;
- if (underlying_type == TypeManager.int64_type ||
- underlying_type == TypeManager.uint64_type){
- long val = 0;
- if (!(v is Expression))
- val = (long) v;
-
- for (int j = 0; j < factor; ++j) {
- data [idx + j] = (byte) (val & 0xFF);
- val = (val >> 8);
+ for (int j = 0; j < factor; ++j) {
+ data [idx + j] = (byte) (val & 0xFF);
+ val = (val >> 8);
+ }
}
} else if (underlying_type == TypeManager.float_type) {
-#if __MonoCS__
-#else
- unsafe {
- float val = 0;
-
- if (!(v is Expression))
- val = (float) v;
-
- byte *ptr = (byte *) &val;
-
+ if (!(v is Expression)){
+ element = BitConverter.GetBytes ((float) v);
+
for (int j = 0; j < factor; ++j)
- data [idx + j] = (byte) ptr [j];
+ data [idx + j] = element [j];
}
-#endif
} else if (underlying_type == TypeManager.double_type) {
-#if __MonoCS__
-#else
- unsafe {
- double val = 0;
+ if (!(v is Expression)){
+ element = BitConverter.GetBytes ((double) v);
- if (!(v is Expression))
- val = (double) v;
-
- byte *ptr = (byte *) &val;
-
for (int j = 0; j < factor; ++j)
- data [idx + j] = (byte) ptr [j];
+ data [idx + j] = element [j];
}
-#endif
} else if (underlying_type == TypeManager.char_type){
- int val = (char) 0;
-
- if (!(v is Expression))
- v = (int) ((char) v);
+ if (!(v is Expression)){
+ int val = (int) ((char) v);
+
+ data [idx] = (byte) (val & 0xff);
+ data [idx+1] = (byte) (val >> 8);
+ }
+ } else if (underlying_type == TypeManager.short_type){
+ if (!(v is Expression)){
+ int val = (int) ((short) v);
- data [idx] = (byte) (val & 0xff);
- data [idx+1] = (byte) (val >> 8);
-
+ data [idx] = (byte) (val & 0xff);
+ data [idx+1] = (byte) (val >> 8);
+ }
+ } else if (underlying_type == TypeManager.ushort_type){
+ if (!(v is Expression)){
+ int val = (int) ((ushort) v);
+
+ data [idx] = (byte) (val & 0xff);
+ data [idx+1] = (byte) (val >> 8);
+ }
} else if (underlying_type == TypeManager.int32_type) {
- int val = 0;
+ if (!(v is Expression)){
+ int val = (int) v;
- if (!(v is Expression))
- val = (int) v;
+ data [idx] = (byte) (val & 0xff);
+ data [idx+1] = (byte) ((val >> 8) & 0xff);
+ data [idx+2] = (byte) ((val >> 16) & 0xff);
+ data [idx+3] = (byte) (val >> 24);
+ }
+ } else if (underlying_type == TypeManager.uint32_type) {
+ if (!(v is Expression)){
+ uint val = (uint) v;
- data [idx] = (byte) (val & 0xff);
- data [idx+1] = (byte) ((val >> 8) & 0xff);
- data [idx+2] = (byte) ((val >> 16) & 0xff);
- data [idx+3] = (byte) (val >> 24);
+ data [idx] = (byte) (val & 0xff);
+ data [idx+1] = (byte) ((val >> 8) & 0xff);
+ data [idx+2] = (byte) ((val >> 16) & 0xff);
+ data [idx+3] = (byte) (val >> 24);
+ }
+ } else if (underlying_type == TypeManager.sbyte_type) {
+ if (!(v is Expression)){
+ sbyte val = (sbyte) v;
+ data [idx] = (byte) val;
+ }
+ } else if (underlying_type == TypeManager.byte_type) {
+ if (!(v is Expression)){
+ byte val = (byte) v;
+ data [idx] = (byte) val;
+ }
} else
throw new Exception ("Unrecognized type in MakeByteBlob");
if (data != null) {
fb = RootContext.MakeStaticData (data);
-
+
if (is_expression)
ig.Emit (OpCodes.Dup);
ig.Emit (OpCodes.Ldtoken, fb);
// Basically we do this for string literals and
// other non-literal expressions
//
- if (e is StringConstant || !(e is Constant)) {
+ if (e is StringConstant || !(e is Constant) || num_automatic_initializers <= 2) {
ig.Emit (OpCodes.Ldloc, temp);
} else {
Invocation.EmitArguments (ec, null, Arguments);
- if (IsBuiltinType)
+ if (IsBuiltinType)
ig.Emit (OpCodes.Newobj, (ConstructorInfo) method);
- else
+ else
ig.Emit (OpCodes.Newobj, (MethodInfo) method);
}
-
+
if (Initializers != null){
//
// FIXME: Set this variable correctly.
bool dynamic_initializers = true;
if (underlying_type != TypeManager.string_type &&
- underlying_type != TypeManager.object_type)
- EmitStaticInitializers (ec, dynamic_initializers || !is_statement);
+ underlying_type != TypeManager.object_type) {
+ if (num_automatic_initializers > 2)
+ EmitStaticInitializers (ec, dynamic_initializers || !is_statement);
+ }
if (dynamic_initializers)
EmitDynamicInitializers (ec, !is_statement);
ec.ig.Emit (OpCodes.Starg, 0);
}
- public void AddressOf (EmitContext ec)
+ public void AddressOf (EmitContext ec, AddressOp mode)
{
ec.ig.Emit (OpCodes.Ldarg_0);
/// </summary>
public class SizeOf : Expression {
public readonly string QueriedType;
+ Type type_queried;
+ Location loc;
- public SizeOf (string queried_type)
+ public SizeOf (string queried_type, Location l)
{
this.QueriedType = queried_type;
+ loc = l;
}
public override Expression DoResolve (EmitContext ec)
{
- // FIXME: Implement;
- throw new Exception ("Unimplemented");
- // return this;
+ type_queried = RootContext.LookupType (
+ ec.TypeContainer, QueriedType, false, loc);
+ if (type_queried == null)
+ return null;
+
+ type = TypeManager.int32_type;
+ eclass = ExprClass.Value;
+ return this;
}
public override void Emit (EmitContext ec)
{
- throw new Exception ("Implement me");
+ int size = GetTypeSize (type_queried);
+
+ if (size == 0)
+ ec.ig.Emit (OpCodes.Sizeof, type_queried);
+ else
+ IntConstant.EmitInt (ec.ig, size);
}
}
"type name instead");
}
-#if USE_OLD
static bool IdenticalNameAndTypeName (EmitContext ec, Expression left_original, Location loc)
{
if (left_original == null)
//
// Instance.MethodGroup
//
+ if (IdenticalNameAndTypeName (ec, left_original, loc)){
+ if (mg.RemoveInstanceMethods ())
+ return member_lookup;
+ }
+
+ if (!mg.RemoveStaticMethods ()){
+ error176 (loc, mg.Methods [0].Name);
+ return null;
+ }
+
+ mg.InstanceExpression = left;
+ return member_lookup;
+#if ORIGINAL
if (!mg.RemoveStaticMethods ()){
if (IdenticalNameAndTypeName (ec, left_original, loc)){
if (!mg.RemoveInstanceMethods ()){
mg.InstanceExpression = left;
return member_lookup;
+#endif
}
if (member_lookup is FieldExpr){
if (c != null) {
object o = c.LookupConstantValue (ec);
object real_value = ((Constant) c.Expr).GetValue ();
+
return Constantify (real_value, fi.FieldType);
}
}
if (decl_type.IsSubclassOf (TypeManager.enum_type)) {
Expression enum_member = MemberLookup (
- ec, decl_type, "value__", false, loc);
+ ec, decl_type, "value__", MemberTypes.Field,
+ AllBindingFlags, loc);
Enum en = TypeManager.LookupEnum (decl_type);
return exp;
}
+
+ if (fi.FieldType.IsPointer && !ec.InUnsafe){
+ UnsafeError (loc);
+ return null;
+ }
if (left is TypeExpr){
// and refers to a type name or an
// a FieldExpr
//
- Expression ml = MemberLookup (ec, ec.TypeContainer.TypeBuilder, ee.EventInfo.Name,
- true, MemberTypes.Event, AllBindingFlags, loc);
+ Expression ml = MemberLookup (
+ ec, ec.TypeContainer.TypeBuilder,
+ ee.EventInfo.Name, MemberTypes.Event, AllBindingFlags, loc);
if (ml != null) {
MemberInfo mi = ec.TypeContainer.GetFieldFromEvent ((EventExpr) ml);
}
//
+ // TODO: I mailed Ravi about this, and apparently we can get rid
+ // of this and put it in the right place.
+ //
// Handle enums here when they are in transit.
// Note that we cannot afford to hit MemberLookup in this case because
// it will fail to find any members at all
}
}
- member_lookup = MemberLookup (ec, expr_type, Identifier, false, loc);
+ if (expr_type.IsPointer){
+ Report.Error (23, loc,
+ "The `.' operator can not be applied to pointer operands (" +
+ TypeManager.CSharpName (expr_type) + ")");
+ return null;
+ }
+
+ member_lookup = MemberLookup (ec, expr_type, Identifier, loc);
- if (member_lookup == null)
+ if (member_lookup == null){
+ Report.Error (117, loc, "`" + expr_type + "' does not contain a " +
+ "definition for `" + Identifier + "'");
+
return null;
+ }
return ResolveMemberAccess (ec, member_lookup, expr, loc, original);
}
-#else
+ public override void Emit (EmitContext ec)
+ {
+ throw new Exception ("Should not happen");
+ }
+ }
- bla bla bla
- //
- // This code is more conformant to the spec (it follows it step by step),
- // but it has not been tested yet, and there is nothing here that is not
- // caught by the above code. But it might be a better foundation to improve
- // on in the future
- //
- public ResolveTypeMemberAccess (EmitContext ec, Expression member_lookup,
- Expression left, Location loc)
+ /// <summary>
+ /// Implements checked expressions
+ /// </summary>
+ public class CheckedExpr : Expression {
+
+ public Expression Expr;
+
+ public CheckedExpr (Expression e)
{
- if (member_lookup is TypeExpr){
- member_lookup.Resolve (ec);
- return member_lookup;
- }
+ Expr = e;
+ }
+
+ public override Expression DoResolve (EmitContext ec)
+ {
+ bool last_const_check = ec.ConstantCheckState;
+
+ ec.ConstantCheckState = true;
+ Expr = Expr.Resolve (ec);
+ ec.ConstantCheckState = last_const_check;
- if (member_lookup is MethodGroupExpr){
- if (!mg.RemoveStaticMethods ()){
- SimpleName.Error120 (loc, mg.Methods [0].Name);
- return null;
- }
-
- return member_lookup;
- }
-
- if (member_lookup is PropertyExpr){
- PropertyExpr pe = (PropertyExpr) member_lookup;
-
- if (!pe.IsStatic){
- SimpleName.Error120 (loc, pe.PropertyInfo.Name);
- return null;
- }
- return pe;
- }
-
- if (member_lookup is FieldExpr){
- FieldExpr fe = (FieldExpr) member_lookup;
- FieldInfo fi = fe.FieldInfo;
-
- if (fi is FieldBuilder) {
- Const c = TypeManager.LookupConstant ((FieldBuilder) fi);
-
- if (c != null) {
- object o = c.LookupConstantValue (ec);
- return Constantify (o, fi.FieldType);
- }
- }
-
- if (fi.IsLiteral) {
- Type t = fi.FieldType;
- Type decl_type = fi.DeclaringType;
- object o;
-
- if (fi is FieldBuilder)
- o = TypeManager.GetValue ((FieldBuilder) fi);
- else
- o = fi.GetValue (fi);
-
- if (decl_type.IsSubclassOf (TypeManager.enum_type)) {
- Expression enum_member = MemberLookup (
- ec, decl_type, "value__",
- false, loc);
-
- Enum en = TypeManager.LookupEnum (decl_type);
-
- Constant c;
- if (en != null)
- c = Constantify (o, en.UnderlyingType);
- else
- c = Constantify (o, enum_member.Type);
-
- return new EnumConstant (c, decl_type);
- }
-
- Expression exp = Constantify (o, t);
-
- return exp;
- }
-
- if (!fe.FieldInfo.IsStatic){
- error176 (loc, fe.FieldInfo.Name);
- return null;
- }
- return member_lookup;
- }
-
- if (member_lookup is EventExpr){
-
- EventExpr ee = (EventExpr) member_lookup;
-
- //
- // If the event is local to this class, we transform ourselves into
- // a FieldExpr
- //
-
- Expression ml = MemberLookup (
- ec, ec.TypeContainer.TypeBuilder, ee.EventInfo.Name,
- true, MemberTypes.Event, AllBindingFlags, loc);
-
- if (ml != null) {
- MemberInfo mi = ec.TypeContainer.GetFieldFromEvent ((EventExpr) ml);
-
- ml = ExprClassFromMemberInfo (ec, mi, loc);
-
- if (ml == null) {
- Report.Error (-200, loc, "Internal error!!");
- return null;
- }
-
- return ResolveMemberAccess (ec, ml, left, loc);
- }
-
- if (!ee.IsStatic) {
- SimpleName.Error120 (loc, ee.EventInfo.Name);
- return null;
- }
-
- return ee;
- }
-
- Console.WriteLine ("Left is: " + left);
- Report.Error (-100, loc, "Support for [" + member_lookup + "] is not present yet");
- Environment.Exit (0);
-
- return null;
- }
-
- public ResolveInstanceMemberAccess (EmitContext ec, Expression member_lookup,
- Expression left, Location loc)
- {
- if (member_lookup is MethodGroupExpr){
- //
- // Instance.MethodGroup
- //
- if (!mg.RemoveStaticMethods ()){
- error176 (loc, mg.Methods [0].Name);
- return null;
- }
-
- mg.InstanceExpression = left;
-
- return member_lookup;
- }
-
- if (member_lookup is PropertyExpr){
- PropertyExpr pe = (PropertyExpr) member_lookup;
-
- if (pe.IsStatic){
- error176 (loc, pe.PropertyInfo.Name);
- return null;
- }
- pe.InstanceExpression = left;
-
- return pe;
- }
-
- Type left_type = left.type;
-
- if (left_type.IsValueType){
- } else {
-
- }
- }
-
- public override Expression DoResolve (EmitContext ec)
- {
- //
- // We are the sole users of ResolveWithSimpleName (ie, the only
- // ones that can cope with it
- //
- expr = expr.ResolveWithSimpleName (ec);
-
- if (expr == null)
- return null;
-
- if (expr is SimpleName){
- SimpleName child_expr = (SimpleName) expr;
-
- expr = new SimpleName (child_expr.Name + "." + Identifier, loc);
-
- return expr.ResolveWithSimpleName (ec);
- }
-
- //
- // Handle enums here when they are in transit.
- // Note that we cannot afford to hit MemberLookup in this case because
- // it will fail to find any members at all (Why?)
- //
-
- Type expr_type = expr.Type;
- if (expr_type.IsSubclassOf (TypeManager.enum_type)) {
-
- Enum en = TypeManager.LookupEnum (expr_type);
-
- if (en != null) {
- object value = en.LookupEnumValue (ec, Identifier, loc);
-
- if (value == null)
- return null;
-
- Constant c = Constantify (value, en.UnderlyingType);
- return new EnumConstant (c, expr_type);
- }
- }
-
- member_lookup = MemberLookup (ec, expr.Type, Identifier, false, loc);
-
- if (member_lookup == null)
- return null;
-
- if (expr is TypeExpr)
- return ResolveTypeMemberAccess (ec, member_lookup, expr, loc);
- else
- return ResolveInstanceMemberAccess (ec, member_lookup, expr, loc);
- }
-#endif
- public override void Emit (EmitContext ec)
- {
- throw new Exception ("Should not happen");
- }
- }
-
- /// <summary>
- /// Implements checked expressions
- /// </summary>
- public class CheckedExpr : Expression {
-
- public Expression Expr;
-
- public CheckedExpr (Expression e)
- {
- Expr = e;
- }
-
- public override Expression DoResolve (EmitContext ec)
- {
- Expr = Expr.Resolve (ec);
-
if (Expr == null)
return null;
public override void Emit (EmitContext ec)
{
bool last_check = ec.CheckState;
+ bool last_const_check = ec.ConstantCheckState;
ec.CheckState = true;
+ ec.ConstantCheckState = true;
Expr.Emit (ec);
ec.CheckState = last_check;
+ ec.ConstantCheckState = last_const_check;
}
}
public override Expression DoResolve (EmitContext ec)
{
+ bool last_const_check = ec.ConstantCheckState;
+
+ ec.ConstantCheckState = false;
Expr = Expr.Resolve (ec);
+ ec.ConstantCheckState = last_const_check;
if (Expr == null)
return null;
public override void Emit (EmitContext ec)
{
bool last_check = ec.CheckState;
+ bool last_const_check = ec.ConstantCheckState;
ec.CheckState = false;
+ ec.ConstantCheckState = false;
Expr.Emit (ec);
ec.CheckState = last_check;
+ ec.ConstantCheckState = last_const_check;
}
}
return true;
}
-
+
+ Expression MakePointerAccess ()
+ {
+ Type t = Expr.Type;
+
+ if (t == TypeManager.void_ptr_type){
+ Report.Error (
+ 242, loc,
+ "The array index operation is not valid for void pointers");
+ return null;
+ }
+ if (Arguments.Count != 1){
+ Report.Error (
+ 196, loc,
+ "A pointer must be indexed by a single value");
+ return null;
+ }
+ Expression p = new PointerArithmetic (true, Expr, ((Argument)Arguments [0]).Expr, t);
+ return new Indirection (p);
+ }
+
public override Expression DoResolve (EmitContext ec)
{
if (!CommonResolve (ec))
//
// I am experimenting with this pattern.
//
- if (Expr.Type.IsSubclassOf (TypeManager.array_type))
+ Type t = Expr.Type;
+
+ if (t.IsSubclassOf (TypeManager.array_type))
return (new ArrayAccess (this)).Resolve (ec);
+ else if (t.IsPointer)
+ return MakePointerAccess ();
else
return (new IndexerAccess (this)).Resolve (ec);
}
if (!CommonResolve (ec))
return null;
- if (Expr.Type.IsSubclassOf (TypeManager.array_type))
+ Type t = Expr.Type;
+ if (t.IsSubclassOf (TypeManager.array_type))
return (new ArrayAccess (this)).ResolveLValue (ec, right_side);
+ else if (t.IsPointer)
+ return MakePointerAccess ();
else
return (new IndexerAccess (this)).ResolveLValue (ec, right_side);
}
}
Type t = ea.Expr.Type;
-
if (t.GetArrayRank () != ea.Arguments.Count){
Report.Error (22, ea.loc,
"Incorrect number of indexes for array " +
return null;
}
type = t.GetElementType ();
+ if (type.IsPointer && !ec.InUnsafe){
+ UnsafeError (ea.loc);
+ return null;
+ }
+
eclass = ExprClass.Variable;
return this;
/// </summary>
static public void EmitLoadOpcode (ILGenerator ig, Type type)
{
- if (type == TypeManager.byte_type)
+ if (type == TypeManager.byte_type || type == TypeManager.bool_type)
ig.Emit (OpCodes.Ldelem_I1);
else if (type == TypeManager.sbyte_type)
ig.Emit (OpCodes.Ldelem_U1);
ig.Emit (OpCodes.Ldelem_R8);
else if (type == TypeManager.intptr_type)
ig.Emit (OpCodes.Ldelem_I);
- else if (type.IsValueType)
+ else if (type.IsValueType){
ig.Emit (OpCodes.Ldelema, type);
- else
+ ig.Emit (OpCodes.Ldobj, type);
+ } else
ig.Emit (OpCodes.Ldelem_Ref);
}
/// </summary>
static public void EmitStoreOpcode (ILGenerator ig, Type t)
{
- if (t == TypeManager.byte_type || t == TypeManager.sbyte_type)
+ if (t == TypeManager.byte_type || t == TypeManager.sbyte_type ||
+ t == TypeManager.bool_type)
ig.Emit (OpCodes.Stelem_I1);
- else if (t == TypeManager.short_type || t == TypeManager.ushort_type)
+ else if (t == TypeManager.short_type || t == TypeManager.ushort_type || t == TypeManager.char_type)
ig.Emit (OpCodes.Stelem_I2);
else if (t == TypeManager.int32_type || t == TypeManager.uint32_type)
ig.Emit (OpCodes.Stelem_I4);
ig.Emit (OpCodes.Stelem_R8);
else if (t == TypeManager.intptr_type)
ig.Emit (OpCodes.Stelem_I);
+ else if (t.IsValueType)
+ ig.Emit (OpCodes.Stobj, t);
else
ig.Emit (OpCodes.Stelem_Ref);
}
foreach (Argument a in ea.Arguments)
a.Expr.Emit (ec);
- source.Emit (ec);
-
Type t = source.Type;
+ //
+ // 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.IsValueType && !TypeManager.IsBuiltinType (t))
+ ig.Emit (OpCodes.Ldelema, t);
+ }
+
+ source.Emit (ec);
+
if (rank == 1)
EmitStoreOpcode (ig, t);
else {
}
}
- public void AddressOf (EmitContext ec)
+ public void AddressOf (EmitContext ec, AddressOp mode)
{
int rank = ea.Expr.Type.GetArrayRank ();
ILGenerator ig = ec.ig;
}
type = get.ReturnType;
+ if (type.IsPointer && !ec.InUnsafe){
+ UnsafeError (ea.loc);
+ return null;
+ }
+
eclass = ExprClass.IndexerAccess;
return this;
}
public override void Emit (EmitContext ec)
{
- Invocation.EmitCall (ec, false, ea.Expr, get, ea.Arguments);
+ Invocation.EmitCall (ec, false, false, ea.Expr, get, ea.Arguments);
}
//
//
public void EmitAssign (EmitContext ec, Expression source)
{
- Invocation.EmitCall (ec, false, ea.Expr, set, set_arguments);
+ Invocation.EmitCall (ec, false, false, ea.Expr, set, set_arguments);
}
}
Expression member_lookup;
Type current_type = ec.TypeContainer.TypeBuilder;
Type base_type = current_type.BaseType;
+ Expression e;
+
+ if (ec.IsStatic){
+ Report.Error (1511, loc,
+ "Keyword base is not allowed in static method");
+ return null;
+ }
- member_lookup = MemberLookup (ec, base_type, member, false, loc);
+ member_lookup = MemberLookup (ec, base_type, member, loc);
if (member_lookup == null)
return null;
if (ec.IsStatic)
left = new TypeExpr (base_type);
else
- left = new This (loc).Resolve (ec);
+ left = ec.This;
- return MemberAccess.ResolveMemberAccess (ec, member_lookup, left, loc, null);
+ e = MemberAccess.ResolveMemberAccess (ec, member_lookup, left, loc, null);
+ if (e is PropertyExpr){
+ PropertyExpr pe = (PropertyExpr) e;
+
+ pe.IsBase = true;
+ }
+
+ return e;
}
public override void Emit (EmitContext ec)
/// </summary>
public class BaseIndexerAccess : Expression {
ArrayList Arguments;
-
- public BaseIndexerAccess (ArrayList args)
+ Location loc;
+
+ public BaseIndexerAccess (ArrayList args, Location l)
{
Arguments = args;
+ loc = l;
}
public override Expression DoResolve (EmitContext ec)
{
- // FIXME: Implement;
- throw new Exception ("Unimplemented");
- // return this;
+ Type current_type = ec.TypeContainer.TypeBuilder;
+ Type base_type = current_type.BaseType;
+ Expression member_lookup;
+
+ if (ec.IsStatic){
+ Report.Error (1511, loc,
+ "Keyword base is not allowed in static method");
+ return null;
+ }
+
+ member_lookup = MemberLookup (ec, base_type, "get_Item", MemberTypes.Method, AllBindingFlags, loc);
+ if (member_lookup == null)
+ return null;
+
+ return MemberAccess.ResolveMemberAccess (ec, member_lookup, ec.This, loc, null);
}
public override void Emit (EmitContext ec)
{
- throw new Exception ("Unimplemented");
+ throw new Exception ("Should never be called");
}
}
ig.Emit (OpCodes.Call, (ConstructorInfo) method);
}
-
}
// <summary>
if (type == null)
return null;
+ if (!ec.InUnsafe && type.IsPointer){
+ UnsafeError (loc);
+ return null;
+ }
+
eclass = ExprClass.Type;
return this;
}
throw new Exception ("This should never be called");
}
}
+
+ //
+ // This class is used to represent the address of an array, used
+ // only by the Fixed statement, this is like the C "&a [0]" construct.
+ //
+ public class ArrayPtr : Expression {
+ Expression array;
+
+ public ArrayPtr (Expression array)
+ {
+ Type array_type = array.Type.GetElementType ();
+
+ this.array = array;
+
+ string array_ptr_type_name = array_type.FullName + "*";
+
+ type = Type.GetType (array_ptr_type_name);
+ if (type == null){
+ ModuleBuilder mb = RootContext.ModuleBuilder;
+
+ type = mb.GetType (array_ptr_type_name);
+ }
+
+ eclass = ExprClass.Value;
+ }
+
+ public override void Emit (EmitContext ec)
+ {
+ ILGenerator ig = ec.ig;
+
+ array.Emit (ec);
+ IntLiteral.EmitInt (ig, 0);
+ ig.Emit (OpCodes.Ldelema, array.Type.GetElementType ());
+ }
+
+ public override Expression DoResolve (EmitContext ec)
+ {
+ //
+ // We are born fully resolved
+ //
+ return this;
+ }
+ }
+
+ //
+ // Used by the fixed statement
+ //
+ public class StringPtr : Expression {
+ LocalBuilder b;
+
+ public StringPtr (LocalBuilder b)
+ {
+ this.b = b;
+ eclass = ExprClass.Value;
+ type = TypeManager.char_ptr_type;
+ }
+
+ public override Expression DoResolve (EmitContext ec)
+ {
+ // This should never be invoked, we are born in fully
+ // initialized state.
+
+ return this;
+ }
+
+ public override void Emit (EmitContext ec)
+ {
+ ILGenerator ig = ec.ig;
+
+ ig.Emit (OpCodes.Ldloc, b);
+ ig.Emit (OpCodes.Conv_I);
+ ig.Emit (OpCodes.Call, TypeManager.int_get_offset_to_string_data);
+ ig.Emit (OpCodes.Add);
+ }
+ }
+
+ //
+ // Implements the `stackalloc' keyword
+ //
+ public class StackAlloc : Expression {
+ Type otype;
+ string t;
+ Expression count;
+ Location loc;
+
+ public StackAlloc (string type, Expression count, Location l)
+ {
+ t = type;
+ this.count = count;
+ loc = l;
+ }
+
+ public override Expression DoResolve (EmitContext ec)
+ {
+ count = count.Resolve (ec);
+ if (count == null)
+ return null;
+
+ if (count.Type != TypeManager.int32_type){
+ count = ConvertImplicitRequired (ec, count, TypeManager.int32_type, loc);
+ if (count == null)
+ return null;
+ }
+
+ if (ec.InCatch || ec.InFinally){
+ Report.Error (255, loc,
+ "stackalloc can not be used in a catch or finally block");
+ return null;
+ }
+
+ otype = RootContext.LookupType (ec.TypeContainer, t, false, loc);
+
+ if (otype == null)
+ return null;
+
+ if (!TypeManager.VerifyUnManaged (otype, loc))
+ return null;
+
+ string ptr_name = otype.FullName + "*";
+ type = Type.GetType (ptr_name);
+ if (type == null){
+ ModuleBuilder mb = RootContext.ModuleBuilder;
+
+ type = mb.GetType (ptr_name);
+ }
+ eclass = ExprClass.Value;
+
+ return this;
+ }
+
+ public override void Emit (EmitContext ec)
+ {
+ int size = GetTypeSize (otype);
+ ILGenerator ig = ec.ig;
+
+ if (size == 0)
+ ig.Emit (OpCodes.Sizeof, otype);
+ else
+ IntConstant.EmitInt (ig, size);
+ count.Emit (ec);
+ ig.Emit (OpCodes.Mul);
+ ig.Emit (OpCodes.Localloc);
+ }
+ }
}
projects / mono.git / blobdiff