/// Base class for expressions
/// </remarks>
public abstract class Expression {
- protected ExprClass eclass;
+ public ExprClass eclass;
protected Type type;
public Type Type {
}
}
- public ExprClass ExprClass {
- get {
- return eclass;
- }
-
- set {
- eclass = value;
- }
- }
-
/// <summary>
/// Utility wrapper routine for Error, just to beautify the code
/// </summary>
return null;
}
- if (e.ExprClass == ExprClass.Invalid)
- throw new Exception ("Expression " + e +
+ if (e.eclass == ExprClass.Invalid)
+ throw new Exception ("Expression " + e.GetType () +
" ExprClass is Invalid after resolve");
- if (e.ExprClass != ExprClass.MethodGroup)
+ if (e.eclass != ExprClass.MethodGroup)
if (e.type == null)
- throw new Exception ("Expression " + e +
- " did not set its type after Resolve");
+ throw new Exception (
+ "Expression " + e.GetType () +
+ " did not set its type after Resolve\n" +
+ "called from: " + this.GetType ());
}
return e;
/// </remarks>
public Expression ResolveWithSimpleName (EmitContext ec)
{
- Expression e = DoResolve (ec);
+ Expression e;
+
+ if (this is SimpleName)
+ e = ((SimpleName) this).DoResolveAllowStatic (ec);
+ else
+ e = DoResolve (ec);
if (e != null){
if (e is SimpleName)
return e;
- if (e.ExprClass == ExprClass.Invalid)
+ if (e.eclass == ExprClass.Invalid)
throw new Exception ("Expression " + e +
" ExprClass is Invalid after resolve");
- if (e.ExprClass != ExprClass.MethodGroup)
+ if (e.eclass != ExprClass.MethodGroup)
if (e.type == null)
throw new Exception ("Expression " + e +
" did not set its type after Resolve");
return null;
}
- if (e.ExprClass == ExprClass.Invalid)
+ if (e.eclass == ExprClass.Invalid)
throw new Exception ("Expression " + e +
" ExprClass is Invalid after resolve");
- if (e.ExprClass != ExprClass.MethodGroup)
+ if (e.eclass != ExprClass.MethodGroup)
if (e.type == null)
throw new Exception ("Expression " + e +
" did not set its type after Resolve");
/// </remarks>
public abstract void Emit (EmitContext ec);
- /// <summary>
- /// This method should perform a reduction of the expression. This should
- /// never return null.
- /// </summary>
- public virtual Expression Reduce (EmitContext ec)
- {
- return this;
- }
-
/// <summary>
/// Protected constructor. Only derivate types should
/// be able to be created
///
/// <remarks>
/// The possible return values are:
- /// IntLiteral, UIntLiteral
- /// LongLiteral, ULongLiteral
- /// FloatLiteral, DoubleLiteral
- /// StringLiteral
+ /// IntConstant, UIntConstant
+ /// LongLiteral, ULongConstant
+ /// FloatConstant, DoubleConstant
+ /// StringConstant
+ ///
+ /// The value returned is already resolved.
/// </remarks>
- public static Expression Literalize (object v, Type t)
+ public static Constant Constantify (object v, Type t)
{
if (t == TypeManager.int32_type)
- return new IntLiteral ((int) v);
+ return new IntConstant ((int) v);
else if (t == TypeManager.uint32_type)
- return new UIntLiteral ((uint) v);
+ return new UIntConstant ((uint) v);
else if (t == TypeManager.int64_type)
- return new LongLiteral ((long) v);
+ return new LongConstant ((long) v);
else if (t == TypeManager.uint64_type)
- return new ULongLiteral ((ulong) v);
+ return new ULongConstant ((ulong) v);
else if (t == TypeManager.float_type)
- return new FloatLiteral ((float) v);
+ return new FloatConstant ((float) v);
else if (t == TypeManager.double_type)
- return new DoubleLiteral ((double) v);
+ return new DoubleConstant ((double) v);
else if (t == TypeManager.string_type)
- return new StringLiteral ((string) v);
+ return new StringConstant ((string) v);
else if (t == TypeManager.short_type)
- return new IntLiteral ((int) ((short)v));
+ return new ShortConstant ((short)v);
else if (t == TypeManager.ushort_type)
- return new IntLiteral ((int) ((ushort)v));
+ return new UShortConstant ((ushort)v);
else if (t == TypeManager.sbyte_type)
- return new IntLiteral ((int) ((sbyte)v));
+ return new SByteConstant (((sbyte)v));
else if (t == TypeManager.byte_type)
- return new IntLiteral ((int) ((byte)v));
+ return new ByteConstant ((byte)v);
else if (t == TypeManager.char_type)
- return new IntLiteral ((int) ((char)v));
- else
- throw new Exception ("Unknown type for literal (" + t +
+ return new CharConstant ((char)v);
+ else if (TypeManager.IsEnumType (t)){
+ Expression e = Constantify (v, v.GetType ());
+
+ return new EnumConstant ((Constant) e, t);
+ } else
+ throw new Exception ("Unknown type for constant (" + t +
"), details: " + v);
}
/// <summary>
/// Returns a fully formed expression after a MemberLookup
/// </summary>
- static Expression ExprClassFromMemberInfo (EmitContext ec, MemberInfo mi, Location loc)
+ public static Expression ExprClassFromMemberInfo (EmitContext ec, MemberInfo mi, Location loc)
{
if (mi is EventInfo)
return new EventExpr ((EventInfo) mi, loc);
return new FieldExpr ((FieldInfo) mi, loc);
else if (mi is PropertyInfo)
return new PropertyExpr ((PropertyInfo) mi, loc);
- else if (mi is Type)
- return new TypeExpr ((Type) mi);
+ else if (mi is Type){
+ return new TypeExpr ((System.Type) mi);
+ }
return null;
}
//
// FIXME: Probably implement a cache for (t,name,current_access_set)?
//
- // FIXME: We need to cope with access permissions here, or this wont
- // work!
- //
// This code could use some optimizations, but we need to do some
// measurements. For example, we could use a delegate to `flag' when
// something can not any longer be a method-group (because it is something
//
// FIXME: Potential optimization, have a static ArrayList
//
+
public static Expression MemberLookup (EmitContext ec, Type t, string name,
- bool same_type, MemberTypes mt,
- BindingFlags bf, Location loc)
+ MemberTypes mt, BindingFlags bf, Location loc)
{
- if (same_type)
+ Type source_type = ec.ContainerType;
+
+ if (source_type == t || source_type.IsSubclassOf (t))
bf |= BindingFlags.NonPublic;
//
do {
MemberInfo [] mi;
- mi = ec.TypeContainer.RootContext.TypeManager.FindMembers (
+ mi = RootContext.TypeManager.FindMembers (
current_type, mt, bf | BindingFlags.DeclaredOnly,
- Type.FilterName, name);
+ System.Type.FilterName, name);
if (current_type == TypeManager.object_type)
searching = false;
MemberTypes.NestedType |
MemberTypes.Property;
- public const BindingFlags AllBindingsFlags =
+ public const BindingFlags AllBindingFlags =
BindingFlags.Public |
BindingFlags.Static |
BindingFlags.Instance;
- public static Expression MemberLookup (EmitContext ec, Type t, string name,
- bool same_type, Location loc)
+ public static Expression MemberLookup (EmitContext ec, Type t, string name, Location loc)
{
- return MemberLookup (ec, t, name, same_type, AllMemberTypes, AllBindingsFlags, loc);
+ return MemberLookup (ec, t, name, AllMemberTypes, AllBindingFlags, loc);
}
+ /// <summary>
+ /// This is a wrapper for MemberLookup that is not used to "probe", but
+ /// to find a final definition. If the final definition is not found, we
+ /// look for private members and display a useful debugging message if we
+ /// find it.
+ /// </summary>
+ public static Expression MemberLookupFinal (EmitContext ec, Type t, string name,
+ Location loc)
+ {
+ Expression e;
+
+ e = MemberLookup (ec, t, name, AllMemberTypes, AllBindingFlags, loc);
+
+ if (e != null)
+ return e;
+
+ e = MemberLookup (ec, t, name, AllMemberTypes,
+ AllBindingFlags | BindingFlags.NonPublic, loc);
+ if (e == null){
+ Report.Error (
+ 117, loc, "`" + t + "' does not contain a definition " +
+ "for `" + name + "'");
+ } else {
+ Report.Error (
+ 122, loc, "`" + t + "." + name +
+ "' is inaccessible due to its protection level");
+ }
+
+ return null;
+ }
+
static public Expression ImplicitReferenceConversion (Expression expr, Type target_type)
{
Type expr_type = expr.Type;
} else if (expr_type.IsSubclassOf (target_type)) {
return new EmptyCast (expr, target_type);
} else {
+ // from the null type to any reference-type.
+ if (expr is NullLiteral && !target_type.IsValueType)
+ return new EmptyCast (expr, target_type);
+
// from any class-type S to any interface-type T.
if (expr_type.IsClass && target_type.IsInterface) {
if (TypeManager.ImplementsInterface (expr_type, target_type))
if (target_type == TypeManager.icloneable_type)
return new EmptyCast (expr, target_type);
- // from the null type to any reference-type.
- if (expr is NullLiteral)
- return new EmptyCast (expr, target_type);
-
return null;
}
//
// Attempt to do the implicit constant expression conversions
- if (expr is IntLiteral){
+ if (expr is IntConstant){
Expression e;
- e = TryImplicitIntConversion (target_type, (IntLiteral) expr);
+ e = TryImplicitIntConversion (target_type, (IntConstant) expr);
if (e != null)
return e;
- } else if (expr is LongLiteral && target_type == TypeManager.uint64_type){
+ } else if (expr is LongConstant && target_type == TypeManager.uint64_type){
//
// Try the implicit constant expression conversion
// from long to ulong, instead of a nice routine,
// we just inline it
//
- if (((LongLiteral) expr).Value > 0)
- return new OpcodeCast (expr, target_type, OpCodes.Conv_I8);
+ long v = ((LongConstant) expr).Value;
+ if (v > 0)
+ return new ULongConstant ((ulong) v);
}
if (expr_type == TypeManager.sbyte_type){
else
op_name = "op_Implicit";
- mg1 = MemberLookup (ec, source_type, op_name, false, loc);
+ mg1 = MemberLookup (ec, source_type, op_name, loc);
if (source_type.BaseType != null)
- mg2 = MemberLookup (ec, source_type.BaseType, op_name, false, loc);
+ mg2 = MemberLookup (ec, source_type.BaseType, op_name, loc);
- mg3 = MemberLookup (ec, target, op_name, false, loc);
+ mg3 = MemberLookup (ec, target, op_name, loc);
if (target.BaseType != null)
- mg4 = MemberLookup (ec, target.BaseType, op_name, false, loc);
+ mg4 = MemberLookup (ec, target.BaseType, op_name, loc);
MethodGroupExpr union1 = Invocation.MakeUnionSet (mg1, mg2);
MethodGroupExpr union2 = Invocation.MakeUnionSet (mg3, mg4);
op_name = "op_Explicit";
- mg5 = MemberLookup (ec, source_type, op_name, false, loc);
+ mg5 = MemberLookup (ec, source_type, op_name, loc);
if (source_type.BaseType != null)
- mg6 = MemberLookup (ec, source_type.BaseType, op_name, false, loc);
+ mg6 = MemberLookup (ec, source_type.BaseType, op_name, loc);
- mg7 = MemberLookup (ec, target, op_name, false, loc);
+ mg7 = MemberLookup (ec, target, op_name, loc);
if (target.BaseType != null)
- mg8 = MemberLookup (ec, target.BaseType, op_name, false, loc);
+ mg8 = MemberLookup (ec, target.BaseType, op_name, loc);
MethodGroupExpr union5 = Invocation.MakeUnionSet (mg5, mg6);
MethodGroupExpr union6 = Invocation.MakeUnionSet (mg7, mg8);
}
/// <summary>
- /// Attemps to perform an implict constant conversion of the IntLiteral
+ /// Attemps to perform an implict constant conversion of the IntConstant
/// into a different data type using casts (See Implicit Constant
/// Expression Conversions)
/// </summary>
- static protected Expression TryImplicitIntConversion (Type target_type, IntLiteral il)
+ static protected Expression TryImplicitIntConversion (Type target_type, IntConstant ic)
{
- int value = il.Value;
-
+ int value = ic.Value;
+
+ //
+ // FIXME: This should really return constants instead of EmptyCasts
+ //
if (target_type == TypeManager.sbyte_type){
if (value >= SByte.MinValue && value <= SByte.MaxValue)
- return new EmptyCast (il, target_type);
+ return new SByteConstant ((sbyte) value);
} else if (target_type == TypeManager.byte_type){
if (Byte.MinValue >= 0 && value <= Byte.MaxValue)
- return new EmptyCast (il, target_type);
+ return new ByteConstant ((byte) value);
} else if (target_type == TypeManager.short_type){
if (value >= Int16.MinValue && value <= Int16.MaxValue)
- return new EmptyCast (il, target_type);
+ return new ShortConstant ((short) value);
} else if (target_type == TypeManager.ushort_type){
if (value >= UInt16.MinValue && value <= UInt16.MaxValue)
- return new EmptyCast (il, target_type);
+ return new UShortConstant ((ushort) value);
} else if (target_type == TypeManager.uint32_type){
- //
- // we can optimize this case: a positive int32
- // always fits on a uint32
- //
if (value >= 0)
- return new EmptyCast (il, target_type);
+ return new UIntConstant ((uint) value);
} else if (target_type == TypeManager.uint64_type){
//
// we can optimize this case: a positive int32
// to do it.
//
if (value >= 0)
- return new OpcodeCast (il, target_type, OpCodes.Conv_I8);
+ return new ULongConstant ((ulong) value);
}
+
+ if (value == 0 && ic is IntLiteral && TypeManager.IsEnumType (target_type))
+ return new EnumConstant (ic, target_type);
return null;
}
//
// Enum types
//
- if (expr is EnumLiteral) {
- Expression e = ((EnumLiteral) expr).Child;
+ if (expr_type.IsSubclassOf (TypeManager.enum_type)) {
+ Expression e;
+
+ //
+ // FIXME: Is there any reason we should have EnumConstant
+ // dealt with here instead of just using always the
+ // UnderlyingSystemType to wrap the type?
+ //
+ if (expr is EnumConstant)
+ e = ((EnumConstant) expr).Child;
+ else {
+ e = new EmptyCast (expr, TypeManager.EnumToUnderlying (expr_type));
+ }
+
+ e = ConvertImplicit (ec, e, target_type, loc);
+ if (e != null)
+ return e;
- return ConvertImplicit (ec, e, target_type, loc);
+ return ConvertNumericExplicit (ec, e, target_type);
}
ne = ConvertReferenceExplicit (expr, target_type);
string kind = "Unknown";
if (expr != null)
- kind = ExprClassName (expr.ExprClass);
+ kind = ExprClassName (expr.eclass);
Error (118, loc, "Expression denotes a `" + kind +
"' where a `" + expected + "' was expected");
}
- /// <summary>
- /// This function tries to reduce the expression performing
- /// constant folding and common subexpression elimination
- /// </summary>
- static public Expression Reduce (EmitContext ec, Expression e)
- {
- //Console.WriteLine ("Calling reduce");
- return e.Reduce (ec);
- }
-
static void error31 (Location l, string val, Type t)
{
Report.Error (31, l, "Constant value `" + val + "' cannot be converted to " +
}
/// <summary>
- /// Converts the IntLiteral, UIntLiteral, LongLiteral or
- /// ULongLiteral into the integral target_type.
+ /// Converts the IntConstant, UIntConstant, LongConstant or
+ /// ULongConstant into the integral target_type. Notice
+ /// that we do not return an `Expression' we do return
+ /// a boxed integral type.
+ ///
+ /// FIXME: Since I added the new constants, we need to
+ /// also support conversions from CharConstant, ByteConstant,
+ /// SByteConstant, UShortConstant, ShortConstant
///
/// This is used by the switch statement, so the domain
/// of work is restricted to the literals above, and the
/// targets are int32, uint32, char, byte, sbyte, ushort,
/// short, uint64 and int64
/// </summary>
- public static Literal ConvertIntLiteral (Literal l, Type target_type, Location loc)
+ public static object ConvertIntLiteral (Constant c, Type target_type, Location loc)
{
string s = "";
- if (l.Type == target_type)
- return l;
+ if (c.Type == target_type)
+ return ((Constant) c).GetValue ();
//
// Make into one of the literals we handle, we dont really care
// about this value as we will just return a few limited types
//
- if (l is EnumLiteral)
- l = ((EnumLiteral)l).WidenToCompilerLiteral ();
+ if (c is EnumConstant)
+ c = ((EnumConstant)c).WidenToCompilerConstant ();
- if (l is IntLiteral){
- int v = ((IntLiteral) l).Value;
+ if (c is IntConstant){
+ int v = ((IntConstant) c).Value;
if (target_type == TypeManager.uint32_type){
if (v >= 0)
- return new UIntLiteral ((uint) v);
+ return (uint) v;
} else if (target_type == TypeManager.char_type){
if (v >= Char.MinValue && v <= Char.MaxValue)
- return l;
+ return (char) v;
} else if (target_type == TypeManager.byte_type){
if (v >= Byte.MinValue && v <= Byte.MaxValue)
- return l;
+ return (byte) v;
} else if (target_type == TypeManager.sbyte_type){
if (v >= SByte.MinValue && v <= SByte.MaxValue)
- return l;
+ return (sbyte) v;
} else if (target_type == TypeManager.short_type){
if (v >= Int16.MinValue && v <= UInt16.MaxValue)
- return l;
+ return (short) v;
} else if (target_type == TypeManager.ushort_type){
if (v >= UInt16.MinValue && v <= UInt16.MaxValue)
- return l;
+ return (ushort) v;
} else if (target_type == TypeManager.int64_type)
- return new LongLiteral (v);
+ return (long) v;
else if (target_type == TypeManager.uint64_type){
if (v > 0)
- return new ULongLiteral ((ulong) v);
+ return (ulong) v;
}
s = v.ToString ();
- } else if (l is UIntLiteral){
- uint v = ((UIntLiteral) l).Value;
+ } else if (c is UIntConstant){
+ uint v = ((UIntConstant) c).Value;
if (target_type == TypeManager.int32_type){
if (v <= Int32.MaxValue)
- return new IntLiteral ((int) v);
+ return (int) v;
} else if (target_type == TypeManager.char_type){
if (v >= Char.MinValue && v <= Char.MaxValue)
- return l;
+ return (char) v;
} else if (target_type == TypeManager.byte_type){
if (v <= Byte.MaxValue)
- return l;
+ return (byte) v;
} else if (target_type == TypeManager.sbyte_type){
if (v <= SByte.MaxValue)
- return l;
+ return (sbyte) v;
} else if (target_type == TypeManager.short_type){
if (v <= UInt16.MaxValue)
- return l;
+ return (short) v;
} else if (target_type == TypeManager.ushort_type){
if (v <= UInt16.MaxValue)
- return l;
+ return (ushort) v;
} else if (target_type == TypeManager.int64_type)
- return new LongLiteral (v);
+ return (long) v;
else if (target_type == TypeManager.uint64_type)
- return new ULongLiteral (v);
+ return (ulong) v;
s = v.ToString ();
- } else if (l is LongLiteral){
- long v = ((LongLiteral) l).Value;
+ } else if (c is LongConstant){
+ long v = ((LongConstant) c).Value;
if (target_type == TypeManager.int32_type){
if (v >= UInt32.MinValue && v <= UInt32.MaxValue)
- return new IntLiteral ((int) v);
+ return (int) v;
} else if (target_type == TypeManager.uint32_type){
if (v >= 0 && v <= UInt32.MaxValue)
- return new UIntLiteral ((uint) v);
+ return (uint) v;
} else if (target_type == TypeManager.char_type){
if (v >= Char.MinValue && v <= Char.MaxValue)
- return new IntLiteral ((int) v);
+ return (char) v;
} else if (target_type == TypeManager.byte_type){
if (v >= Byte.MinValue && v <= Byte.MaxValue)
- return new IntLiteral ((int) v);
+ return (byte) v;
} else if (target_type == TypeManager.sbyte_type){
if (v >= SByte.MinValue && v <= SByte.MaxValue)
- return new IntLiteral ((int) v);
+ return (sbyte) v;
} else if (target_type == TypeManager.short_type){
if (v >= Int16.MinValue && v <= UInt16.MaxValue)
- return new IntLiteral ((int) v);
+ return (short) v;
} else if (target_type == TypeManager.ushort_type){
if (v >= UInt16.MinValue && v <= UInt16.MaxValue)
- return new IntLiteral ((int) v);
+ return (ushort) v;
} else if (target_type == TypeManager.uint64_type){
if (v > 0)
- return new ULongLiteral ((ulong) v);
+ return (ulong) v;
}
s = v.ToString ();
- } else if (l is ULongLiteral){
- ulong v = ((ULongLiteral) l).Value;
+ } else if (c is ULongConstant){
+ ulong v = ((ULongConstant) c).Value;
if (target_type == TypeManager.int32_type){
if (v <= Int32.MaxValue)
- return new IntLiteral ((int) v);
+ return (int) v;
} else if (target_type == TypeManager.uint32_type){
if (v <= UInt32.MaxValue)
- return new UIntLiteral ((uint) v);
+ return (uint) v;
} else if (target_type == TypeManager.char_type){
if (v >= Char.MinValue && v <= Char.MaxValue)
- return new IntLiteral ((int) v);
+ return (char) v;
} else if (target_type == TypeManager.byte_type){
if (v >= Byte.MinValue && v <= Byte.MaxValue)
- return new IntLiteral ((int) v);
+ return (byte) v;
} else if (target_type == TypeManager.sbyte_type){
if (v <= (int) SByte.MaxValue)
- return new IntLiteral ((int) v);
+ return (sbyte) v;
} else if (target_type == TypeManager.short_type){
if (v <= UInt16.MaxValue)
- return new IntLiteral ((int) v);
+ return (short) v;
} else if (target_type == TypeManager.ushort_type){
if (v <= UInt16.MaxValue)
- return new IntLiteral ((int) v);
+ return (ushort) v;
} else if (target_type == TypeManager.int64_type){
if (v <= Int64.MaxValue)
- return new LongLiteral ((long) v);
+ return (long) v;
}
s = v.ToString ();
- }
-
+ } else if (c is ByteConstant){
+ byte v = ((ByteConstant) c).Value;
+
+ if (target_type == TypeManager.int32_type)
+ return (int) v;
+ else if (target_type == TypeManager.uint32_type)
+ return (uint) v;
+ else if (target_type == TypeManager.char_type)
+ return (char) v;
+ else if (target_type == TypeManager.sbyte_type){
+ if (v <= SByte.MaxValue)
+ return (sbyte) v;
+ } else if (target_type == TypeManager.short_type)
+ return (short) v;
+ else if (target_type == TypeManager.ushort_type)
+ return (ushort) v;
+ else if (target_type == TypeManager.int64_type)
+ return (long) v;
+ else if (target_type == TypeManager.uint64_type)
+ return (ulong) v;
+ s = v.ToString ();
+ } else if (c is SByteConstant){
+ sbyte v = ((SByteConstant) c).Value;
+
+ if (target_type == TypeManager.int32_type)
+ return (int) v;
+ else if (target_type == TypeManager.uint32_type){
+ if (v >= 0)
+ return (uint) v;
+ } else if (target_type == TypeManager.char_type){
+ if (v >= 0)
+ return (char) v;
+ } else if (target_type == TypeManager.byte_type){
+ if (v >= 0)
+ return (byte) v;
+ } else if (target_type == TypeManager.short_type)
+ return (short) v;
+ else if (target_type == TypeManager.ushort_type){
+ if (v >= 0)
+ return (ushort) v;
+ } else if (target_type == TypeManager.int64_type)
+ return (long) v;
+ else if (target_type == TypeManager.uint64_type){
+ if (v >= 0)
+ return (ulong) v;
+ }
+ s = v.ToString ();
+ } else if (c is ShortConstant){
+ short v = ((ShortConstant) c).Value;
+
+ if (target_type == TypeManager.int32_type){
+ return (int) v;
+ } else if (target_type == TypeManager.uint32_type){
+ if (v >= 0)
+ return (uint) v;
+ } else if (target_type == TypeManager.char_type){
+ if (v >= 0)
+ return (char) v;
+ } else if (target_type == TypeManager.byte_type){
+ if (v >= Byte.MinValue && v <= Byte.MaxValue)
+ return (byte) v;
+ } else if (target_type == TypeManager.sbyte_type){
+ if (v >= SByte.MinValue && v <= SByte.MaxValue)
+ return (sbyte) v;
+ } else if (target_type == TypeManager.ushort_type){
+ if (v >= 0)
+ return (ushort) v;
+ } else if (target_type == TypeManager.int64_type)
+ return (long) v;
+ else if (target_type == TypeManager.uint64_type)
+ return (ulong) v;
+
+ s = v.ToString ();
+ } else if (c is UShortConstant){
+ ushort v = ((UShortConstant) c).Value;
+
+ if (target_type == TypeManager.int32_type)
+ return (int) v;
+ else if (target_type == TypeManager.uint32_type)
+ return (uint) v;
+ else if (target_type == TypeManager.char_type){
+ if (v >= Char.MinValue && v <= Char.MaxValue)
+ return (char) v;
+ } else if (target_type == TypeManager.byte_type){
+ if (v >= Byte.MinValue && v <= Byte.MaxValue)
+ return (byte) v;
+ } else if (target_type == TypeManager.sbyte_type){
+ if (v <= SByte.MaxValue)
+ return (byte) v;
+ } else if (target_type == TypeManager.short_type){
+ if (v <= Int16.MaxValue)
+ return (short) v;
+ } else if (target_type == TypeManager.int64_type)
+ return (long) v;
+ else if (target_type == TypeManager.uint64_type)
+ return (ulong) v;
+
+ s = v.ToString ();
+ } else if (c is CharConstant){
+ char v = ((CharConstant) c).Value;
+
+ if (target_type == TypeManager.int32_type)
+ return (int) v;
+ else if (target_type == TypeManager.uint32_type)
+ return (uint) v;
+ else if (target_type == TypeManager.byte_type){
+ if (v >= Byte.MinValue && v <= Byte.MaxValue)
+ return (byte) v;
+ } else if (target_type == TypeManager.sbyte_type){
+ if (v <= SByte.MaxValue)
+ return (sbyte) v;
+ } else if (target_type == TypeManager.short_type){
+ if (v <= Int16.MaxValue)
+ return (short) v;
+ } else if (target_type == TypeManager.ushort_type)
+ return (short) v;
+ else if (target_type == TypeManager.int64_type)
+ return (long) v;
+ else if (target_type == TypeManager.uint64_type)
+ return (ulong) v;
+
+ s = v.ToString ();
+ }
error31 (loc, s, target_type);
return null;
- }
+ }
}
public EmptyCast (Expression child, Type return_type)
{
- ExprClass = child.ExprClass;
+ eclass = child.eclass;
type = return_type;
this.child = child;
}
{
child.Emit (ec);
}
-
}
/// <summary>
/// This class is used to wrap literals which belong inside Enums
/// </summary>
- public class EnumLiteral : Literal {
- public Expression Child;
+ public class EnumConstant : Constant {
+ public Constant Child;
- public EnumLiteral (Expression child, Type enum_type)
+ public EnumConstant (Constant child, Type enum_type)
{
- ExprClass = child.ExprClass;
+ eclass = child.eclass;
this.Child = child;
type = enum_type;
}
public override object GetValue ()
{
- return ((Literal) Child).GetValue ();
+ return Child.GetValue ();
}
//
// (int32, uint32, int64, uint64, short, ushort, byte, sbyte) to
// one of the internal compiler literals: Int/UInt/Long/ULong Literals.
//
- public Literal WidenToCompilerLiteral ()
+ public Constant WidenToCompilerConstant ()
{
- Type t = Child.Type.UnderlyingSystemType;
- object v = ((Literal) Child).GetValue ();;
+ Type t = TypeManager.EnumToUnderlying (Child.Type);
+ object v = ((Constant) Child).GetValue ();;
if (t == TypeManager.int32_type)
- return new IntLiteral ((int) v);
+ return new IntConstant ((int) v);
if (t == TypeManager.uint32_type)
- return new UIntLiteral ((uint) v);
+ return new UIntConstant ((uint) v);
if (t == TypeManager.int64_type)
- return new LongLiteral ((long) v);
+ return new LongConstant ((long) v);
if (t == TypeManager.uint64_type)
- return new ULongLiteral ((ulong) v);
+ return new ULongConstant ((ulong) v);
if (t == TypeManager.short_type)
- return new IntLiteral ((short) v);
+ return new ShortConstant ((short) v);
if (t == TypeManager.ushort_type)
- return new UIntLiteral ((ushort) v);
+ return new UShortConstant ((ushort) v);
if (t == TypeManager.byte_type)
- return new UIntLiteral ((byte) v);
+ return new ByteConstant ((byte) v);
if (t == TypeManager.sbyte_type)
- return new IntLiteral ((sbyte) v);
+ return new SByteConstant ((sbyte) v);
throw new Exception ("Invalid enumeration underlying type: " + t);
}
+ //
+ // Extracts the value in the enumeration on its native representation
+ //
+ public object GetPlainValue ()
+ {
+ Type t = TypeManager.EnumToUnderlying (Child.Type);
+ object v = ((Constant) Child).GetValue ();;
+
+ if (t == TypeManager.int32_type)
+ return (int) v;
+ if (t == TypeManager.uint32_type)
+ return (uint) v;
+ if (t == TypeManager.int64_type)
+ return (long) v;
+ if (t == TypeManager.uint64_type)
+ return (ulong) v;
+ if (t == TypeManager.short_type)
+ return (short) v;
+ if (t == TypeManager.ushort_type)
+ return (ushort) v;
+ if (t == TypeManager.byte_type)
+ return (byte) v;
+ if (t == TypeManager.sbyte_type)
+ return (sbyte) v;
+
+ return null;
+ }
+
public override string AsString ()
{
- return ((Literal) Child).AsString ();
+ return Child.AsString ();
}
}
//
// Load the object from the pointer
//
+ basic_type:
+
if (t == TypeManager.int32_type)
ig.Emit (OpCodes.Ldind_I4);
else if (t == TypeManager.uint32_type)
ig.Emit (OpCodes.Ldind_I1);
else if (t == TypeManager.intptr_type)
ig.Emit (OpCodes.Ldind_I);
- else
+ else if (TypeManager.IsEnumType (t)){
+ t = TypeManager.EnumToUnderlying (t);
+ goto basic_type;
+ } else
ig.Emit (OpCodes.Ldobj, t);
}
}
Error120 (Location, Name);
return null;
}
+ } else if (e is EventExpr) {
+ if (!((EventExpr) e).IsStatic) {
+ Error120 (Location, Name);
+ return null;
+ }
}
return e;
}
- // <remarks>
- // 7.5.2: Simple Names.
- //
- // Local Variables and Parameters are handled at
- // parse time, so they never occur as SimpleNames.
- // </remarks>
public override Expression DoResolve (EmitContext ec)
+ {
+ return SimpleNameResolve (ec, false);
+ }
+
+ public Expression DoResolveAllowStatic (EmitContext ec)
+ {
+ return SimpleNameResolve (ec, true);
+ }
+
+ /// <remarks>
+ /// 7.5.2: Simple Names.
+ ///
+ /// Local Variables and Parameters are handled at
+ /// parse time, so they never occur as SimpleNames.
+ ///
+ /// The `allow_static' flag is used by MemberAccess only
+ /// and it is used to inform us that it is ok for us to
+ /// avoid the static check, because MemberAccess might end
+ /// up resolving the Name as a Type name and the access as
+ /// a static type access.
+ ///
+ /// ie: Type Type; .... { Type.GetType (""); }
+ ///
+ /// Type is both an instance variable and a Type; Type.GetType
+ /// is the static method not an instance method of type.
+ /// </remarks>
+ Expression SimpleNameResolve (EmitContext ec, bool allow_static)
{
Expression e;
//
//
- // Stage 2: Lookup members
+ // Stage 2: Lookup members
//
- e = MemberLookup (ec, ec.TypeContainer.TypeBuilder, Name, true, Location);
- if (e == null) {
+ e = MemberLookup (ec, ec.TypeContainer.TypeBuilder, Name, Location);
+ if (e == null){
//
// Stage 3: Lookup symbol in the various namespaces.
- //
+ //
+ DeclSpace ds = ec.TypeContainer;
Type t;
string alias_value;
-
- if ((t = ec.TypeContainer.LookupType (Name, true)) != null)
+
+ if ((t = RootContext.LookupType (ds, Name, true, Location)) != null)
return new TypeExpr (t);
-
+
//
- // Stage 3 part b: Lookup up if we are an alias to a type
+ // Stage 2 part b: Lookup up if we are an alias to a type
// or a namespace.
//
// Since we are cheating: we only do the Alias lookup for
// namespaces if the name does not include any dots in it
//
-
+
if (Name.IndexOf ('.') == -1 && (alias_value = ec.TypeContainer.LookupAlias (Name)) != null) {
- // System.Console.WriteLine (Name + " --> " + alias_value);
- if ((t = ec.TypeContainer.LookupType (alias_value, true)) != null)
+ // System.Console.WriteLine (Name + " --> " + alias_value);
+ if ((t = RootContext.LookupType (ds, alias_value, true, Location))
+ != null)
return new TypeExpr (t);
-
- // we have alias value, but it isn't Type, so try if it's namespace
+
+ // we have alias value, but it isn't Type, so try if it's namespace
return new SimpleName (alias_value, Location);
}
-
+
// No match, maybe our parent can compose us
// into something meaningful.
- //
return this;
}
-
- // Step 2, continues here.
+
+ //
+ // Stage 2 continues here.
+ //
if (e is TypeExpr)
return e;
if (e is FieldExpr){
FieldExpr fe = (FieldExpr) e;
-
- if (!fe.FieldInfo.IsStatic){
- This t = new This (Location.Null);
+ FieldInfo fi = fe.FieldInfo;
+
+ if (ec.IsStatic){
+ if (!allow_static && !fi.IsStatic){
+ Error120 (Location, Name);
+ return null;
+ }
+ } else {
+ // If we are not in static code and this
+ // field is not static, set the instance to `this'.
- fe.InstanceExpression = t.DoResolve (ec);
+ if (!fi.IsStatic)
+ fe.InstanceExpression = ec.This;
}
- FieldInfo fi = fe.FieldInfo;
if (fi is FieldBuilder) {
Const c = TypeManager.LookupConstant ((FieldBuilder) fi);
if (c != null) {
object o = c.LookupConstantValue (ec);
- Expression l = Literalize (o, fi.FieldType);
- l = l.Resolve (ec);
- return ((Literal) l);
+ object real_value = ((Constant)c.Expr).GetValue ();
+ return Constantify (real_value, fi.FieldType);
}
}
+
+ return e;
}
- if (ec.IsStatic)
+ if (e is EventExpr) {
+ //
+ // If the event is local to this class, we transform ourselves into
+ // a FieldExpr
+ //
+ EventExpr ee = (EventExpr) e;
+
+ Expression ml = MemberLookup (
+ ec, ec.TypeContainer.TypeBuilder, ee.EventInfo.Name,
+ MemberTypes.Event, AllBindingFlags, Location);
+
+ if (ml != null) {
+ MemberInfo mi = ec.TypeContainer.GetFieldFromEvent ((EventExpr) ml);
+
+ if (mi == null) {
+ //
+ // If this happens, then we have an event with its own
+ // accessors and private field etc so there's no need
+ // to transform ourselves : we should instead flag an error
+ //
+ Assign.error70 (ee.EventInfo, Location);
+ return null;
+ }
+
+ ml = ExprClassFromMemberInfo (ec, mi, Location);
+
+ if (ml == null) {
+ Report.Error (-200, Location, "Internal error!!");
+ return null;
+ }
+
+ Expression instance_expr;
+
+ FieldInfo fi = ((FieldExpr) ml).FieldInfo;
+
+ if (fi.IsStatic)
+ instance_expr = null;
+ else
+ instance_expr = ec.This;
+
+ instance_expr = instance_expr.Resolve (ec);
+
+ if (instance_expr != null)
+ instance_expr = instance_expr.Resolve (ec);
+
+ return MemberAccess.ResolveMemberAccess (ec, ml, instance_expr, Location, null);
+ }
+ }
+
+
+ if (ec.IsStatic){
+ if (allow_static)
+ return e;
+
return MemberStaticCheck (e);
- else
+ } else
return e;
}
if (FieldInfo.IsStatic)
ig.Emit (OpCodes.Ldsfld, FieldInfo);
else {
- InstanceExpression.Emit (ec);
-
+ if (InstanceExpression.Type.IsValueType){
+ IMemoryLocation ml;
+
+ if (!(InstanceExpression is IMemoryLocation)){
+ LocalTemporary tempo = new LocalTemporary (
+ ec, InstanceExpression.Type);
+
+ InstanceExpression.Emit (ec);
+ tempo.Store (ec);
+ ml = tempo;
+ } else
+ ml = (IMemoryLocation) InstanceExpression;
+
+ ml.AddressOf (ec);
+ } else
+ InstanceExpression.Emit (ec);
+
ig.Emit (OpCodes.Ldfld, FieldInfo);
}
}
ml.AddressOf (ec);
} else
- throw new Exception ("The " + instance + " of type " + Type+
- "represents a ValueType and does not " +
- "implement IMemoryLocation");
+ throw new Exception ("The " + instance + " of type " +
+ instance.Type +
+ " represents a ValueType and does " +
+ "not implement IMemoryLocation");
} else
instance.Emit (ec);
}
public class PropertyExpr : ExpressionStatement, IAssignMethod {
public readonly PropertyInfo PropertyInfo;
public readonly bool IsStatic;
+ public bool IsBase;
MethodInfo [] Accessors;
Location loc;
override public void Emit (EmitContext ec)
{
- Invocation.EmitCall (ec, IsStatic, instance_expr, Accessors [0], null);
+ Invocation.EmitCall (ec, IsBase, IsStatic, instance_expr, Accessors [0], null);
}
ArrayList args = new ArrayList ();
args.Add (arg);
- Invocation.EmitCall (ec, IsStatic, instance_expr, Accessors [1], args);
+ Invocation.EmitCall (ec, false, IsStatic, instance_expr, Accessors [1], args);
}
override public void EmitStatement (EmitContext ec)
}
/// <summary>
- /// Fully resolved expression that evaluates to a Expression
+ /// Fully resolved expression that evaluates to an Event
/// </summary>
public class EventExpr : Expression {
public readonly EventInfo EventInfo;
Location loc;
+ public Expression InstanceExpression;
+
+ public readonly bool IsStatic;
+
+ MethodInfo add_accessor, remove_accessor;
public EventExpr (EventInfo ei, Location loc)
{
EventInfo = ei;
this.loc = loc;
eclass = ExprClass.EventAccess;
+
+ add_accessor = TypeManager.GetAddMethod (ei);
+ remove_accessor = TypeManager.GetRemoveMethod (ei);
+
+ if (add_accessor.IsStatic || remove_accessor.IsStatic)
+ IsStatic = true;
+
+ if (EventInfo is MyEventBuilder)
+ type = ((MyEventBuilder) EventInfo).EventType;
+ else
+ type = EventInfo.EventHandlerType;
}
override public Expression DoResolve (EmitContext ec)
{
- // We are born in resolved state.
+ // We are born fully resolved
return this;
}
override public void Emit (EmitContext ec)
{
- throw new Exception ("Implement me");
- // FIXME: Implement.
+ throw new Exception ("Should not happen I think");
+ }
+
+ public void EmitAddOrRemove (EmitContext ec, Expression source)
+ {
+ Expression handler = ((Binary) source).Right;
+
+ Argument arg = new Argument (handler, Argument.AType.Expression);
+ ArrayList args = new ArrayList ();
+
+ args.Add (arg);
+
+ if (((Binary) source).Oper == Binary.Operator.Addition)
+ Invocation.EmitCall (
+ ec, false, IsStatic, InstanceExpression, add_accessor, args);
+ else
+ Invocation.EmitCall (
+ ec, false, IsStatic, InstanceExpression, remove_accessor, args);
}
}
}
projects / mono.git / blobdiff