//
//
-namespace Mono.CSharp {
+namespace Mono.MonoBASIC {
using System;
using System.Collections;
using System.Diagnostics;
/// The AddressOf method should generate code that loads
/// the address of the object and leaves it on the stack.
///
- /// The `mode' argument is used to notify the expression
+ /// The 'mode' argument is used to notify the expression
/// of whether this will be used to read from the address or
/// write to the address.
///
bool IsAssigned (EmitContext ec, Location loc);
/// <summary>
- /// Checks whether field `name' in this struct has been assigned.
+ /// Checks whether field 'name' in this struct has been assigned.
/// </summary>
bool IsFieldAssigned (EmitContext ec, string name, Location loc);
void SetAssigned (EmitContext ec);
/// <summary>
- /// Tells the flow analysis code that field `name' in this struct
+ /// Tells the flow analysis code that field 'name' in this struct
/// has already been assigned atthe current code position.
/// </summary>
void SetFieldAssigned (EmitContext ec, string name);
get;
}
+ /// <summary>
+ /// The type which declares this member.
+ /// </summary>
+ Type DeclaringType {
+ get;
+ }
+
/// <summary>
/// The instance expression associated with this member, if it's a
/// non-static member.
/// <summary>
/// Utility wrapper routine for Warning, only prints the warning if
- /// warnings of level `level' are enabled.
+ /// warnings of level 'level' are enabled.
/// </summary>
public void Warning (int warning, int level, string s)
{
static public void Error_CannotConvertType (Location loc, Type source, Type target)
{
Report.Error (30, loc, "Cannot convert type '" +
- TypeManager.CSharpName (source) + "' to '" +
- TypeManager.CSharpName (target) + "'");
+ TypeManager.MonoBASIC_Name (source) + "' to '" +
+ TypeManager.MonoBASIC_Name (target) + "'");
}
/// <summary>
/// There are two side effects expected from calling
/// Resolve(): the the field variable "eclass" should
/// be set to any value of the enumeration
- /// `ExprClass' and the type variable should be set
+ /// 'ExprClass' and the type variable should be set
/// to a valid type (this is the type of the
/// expression).
/// </remarks>
bool old_do_flow_analysis = ec.DoFlowAnalysis;
if ((flags & ResolveFlags.DisableFlowAnalysis) != 0)
ec.DoFlowAnalysis = false;
-
+
Expression e;
- if (this is SimpleName)
- e = ((SimpleName) this).DoResolveAllowStatic (ec);
- else
- e = DoResolve (ec);
-
- ec.DoFlowAnalysis = old_do_flow_analysis;
+ try {
+ if (this is SimpleName)
+ e = ((SimpleName) this).DoResolveAllowStatic (ec);
+ else
+ e = DoResolve (ec);
+ } finally {
+ ec.DoFlowAnalysis = old_do_flow_analysis;
+ }
if (e == null)
return null;
ec.ContainerType, ec.ContainerType, AllMemberTypes,
AllBindingFlags | BindingFlags.NonPublic, s.Name);
if (lookup != null)
- Error (122, "`" + s.Name + "' " +
+ Error (30390, "'" + s.Name + "' " +
"is inaccessible because of its protection level");
else
- Error (103, "The name `" + s.Name + "' could not be " +
- "found in `" + ec.DeclSpace.Name + "'");
+ Error (30451, "The name '" + s.Name + "' could not be " +
+ "found in '" + ec.DeclSpace.Name + "'");
return null;
}
return s;
}
-
+
if ((e is TypeExpr) || (e is ComposedCast)) {
if ((flags & ResolveFlags.Type) == 0) {
e.Error118 (flags);
case ExprClass.MethodGroup:
if ((flags & ResolveFlags.MethodGroup) == 0) {
- ((MethodGroupExpr) e).ReportUsageError ();
- return null;
+ MethodGroupExpr mg = (MethodGroupExpr) e;
+ Invocation i = new Invocation (mg, new ArrayList(), Location.Null);
+ Expression te = i.Resolve(ec);
+ //((MethodGroupExpr) e).ReportUsageError ();
+ //return null;
+ return te;
}
break;
SimpleName s = (SimpleName) e;
Report.Error (
- 103, loc,
- "The name `" + s.Name + "' could not be found in `" +
+ 30451, loc,
+ "The name '" + s.Name + "' could not be found in '" +
ec.DeclSpace.Name + "'");
return null;
}
" ExprClass is Invalid after resolve");
if (e.eclass == ExprClass.MethodGroup) {
- ((MethodGroupExpr) e).ReportUsageError ();
- return null;
+ MethodGroupExpr mg = (MethodGroupExpr) e;
+ Invocation i = new Invocation (mg, new ArrayList(), Location.Null);
+ Expression te = i.Resolve(ec);
+ return te;
+ //((MethodGroupExpr) e).ReportUsageError ();
+ //return null;
}
if (e.type == null)
else if (mi is FieldInfo)
return new FieldExpr ((FieldInfo) mi, loc);
else if (mi is PropertyInfo)
- return new PropertyExpr ((PropertyInfo) mi, loc);
+ return new PropertyExpr (ec, (PropertyInfo) mi, loc);
else if (mi is Type){
return new TypeExpr ((System.Type) mi, loc);
}
// FIXME: Probably implement a cache for (t,name,current_access_set)?
//
// This code could use some optimizations, but we need to do some
- // measurements. For example, we could use a delegate to `flag' when
+ // measurements. For example, we could use a delegate to 'flag' when
// something can not any longer be a method-group (because it is something
// else).
//
//
// null on error.
//
- // FIXME: When calling MemberLookup inside an `Invocation', we should pass
+ // FIXME: When calling MemberLookup inside an 'Invocation', we should pass
// the arguments here and have MemberLookup return only the methods that
// match the argument count/type, unlike we are doing now (we delay this
// decision).
}
//
- // Lookup type `t' for code in class `invocation_type'. Note that it's important
- // to set `invocation_type' correctly since this method also checks whether the
- // invoking class is allowed to access the member in class `t'. When you want to
- // explicitly do a lookup in the base class, you must set both `t' and `invocation_type'
+ // Lookup type 't' for code in class 'invocation_type'. Note that it's important
+ // to set 'invocation_type' correctly since this method also checks whether the
+ // invoking class is allowed to access the member in class 't'. When you want to
+ // explicitly do a lookup in the base class, you must set both 't' and 'invocation_type'
// to the base class (although a derived class can access protected members of its base
// class it cannot do so through an instance of the base class (error CS1540)).
//
public const BindingFlags AllBindingFlags =
BindingFlags.Public |
BindingFlags.Static |
- BindingFlags.Instance;
+ BindingFlags.Instance |
+ BindingFlags.IgnoreCase;
public static Expression MemberLookup (EmitContext ec, Type t, string name, Location loc)
{
- return MemberLookup (ec, ec.ContainerType, t, name,
- AllMemberTypes, AllBindingFlags, loc);
+ return MemberLookup (ec, ec.ContainerType, t, name, AllMemberTypes, AllBindingFlags, loc);
}
public static Expression MethodLookup (EmitContext ec, Type t, string name, Location loc)
AllBindingFlags | BindingFlags.NonPublic, loc);
if (e == null){
Report.Error (
- 117, loc, "`" + t + "' does not contain a definition " +
- "for `" + name + "'");
+ 30456, loc, "'" + t + "' does not contain a definition " +
+ "for '" + name + "'");
} else {
- Report.Error (
- 122, loc, "`" + t + "." + name +
- "' is inaccessible due to its protection level");
+ Report.Error (
+ 30390, loc, "'" + t + "." + name +
+ "' is inaccessible due to its protection level");
}
return null;
expr.Emit (null);
}
-
- if (target_type == TypeManager.object_type) {
+
+ //
+ // notice that it is possible to write "ValueType v = 1", the ValueType here
+ // is an abstract class, and not really a value type, so we apply the same rules.
+ //
+ if (target_type == TypeManager.object_type || target_type == TypeManager.value_type) {
//
// A pointer type cannot be converted to object
//
if (expr_type.IsClass || expr_type.IsInterface)
return new EmptyCast (expr, target_type);
} else if (expr_type.IsSubclassOf (target_type)) {
+ //
+ // Special case: enumeration to System.Enum.
+ // System.Enum is not a value type, it is a class, so we need
+ // a boxing conversion
+ //
+ if (expr_type.IsEnum)
+ return new BoxedCast (expr);
+
return new EmptyCast (expr, target_type);
} else {
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))
- return new EmptyCast (expr, target_type);
- else
- return null;
+ if (target_type.IsInterface) {
+ if (TypeManager.ImplementsInterface (expr_type, target_type)){
+ if (expr_type.IsClass)
+ return new EmptyCast (expr, target_type);
+ else if (expr_type.IsValueType)
+ return new BoxedCast (expr);
+ }
}
// from any interface type S to interface-type T.
if (expr_type.IsInterface && target_type.IsInterface) {
-
if (TypeManager.ImplementsInterface (expr_type, target_type))
return new EmptyCast (expr, target_type);
else
return null;
}
- /// <summary>
- /// Handles expressions like this: decimal d; d = 1;
- /// and changes them into: decimal d; d = new System.Decimal (1);
- /// </summary>
- static Expression InternalTypeConstructor (EmitContext ec, Expression expr, Type target)
- {
- ArrayList args = new ArrayList ();
-
- args.Add (new Argument (expr, Argument.AType.Expression));
-
- Expression ne = new New (new TypeExpr (target, Location.Null), args, Location.Null);
-
- return ne.Resolve (ec);
- }
-
/// <summary>
/// Implicit Numeric Conversions.
///
return new ULongConstant ((ulong) v);
}
- //
- // If we have an enumeration, extract the underlying type,
- // use this during the comparission, but wrap around the original
- // target_type
- //
- Type real_target_type = target_type;
+ Type real_target_type = target_type;
- if (TypeManager.IsEnumType (real_target_type))
- real_target_type = TypeManager.EnumToUnderlying (real_target_type);
+ if (target_type == TypeManager.bool_type) {
- if (expr_type == real_target_type)
- return new EmptyCast (expr, target_type);
-
- if (expr_type == TypeManager.sbyte_type){
+ if (expr_type == TypeManager.decimal_type) {
+ return RTConversionExpression (ec, "System.Convert", ".ToBoolean" , expr, loc);
+ }
+ return new NumericToBoolCast (expr, expr.Type);
+ }
+
+ if (expr_type == TypeManager.bool_type){
+ //
+ if (real_target_type == TypeManager.sbyte_type)
+ return new OpcodeCast (expr, target_type, OpCodes.Conv_I2);
+ if (real_target_type == TypeManager.byte_type)
+ return new OpcodeCast (expr, target_type, OpCodes.Conv_I2);
+ if (real_target_type == TypeManager.int32_type)
+ return new OpcodeCast (expr, target_type, OpCodes.Conv_I4);
+ if (real_target_type == TypeManager.int64_type)
+ return new OpcodeCast (expr, target_type, OpCodes.Conv_I8);
+ if (real_target_type == TypeManager.double_type)
+ return new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
+ if (real_target_type == TypeManager.float_type)
+ return new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
+ if (real_target_type == TypeManager.short_type)
+ return new OpcodeCast (expr, target_type, OpCodes.Conv_I2);
+ if (real_target_type == TypeManager.decimal_type)
+ return RTConversionExpression(ec, "System.Convert", ".ToDecimal", expr, loc);
+ } else if (expr_type == TypeManager.sbyte_type){
//
// From sbyte to short, int, long, float, double.
//
return new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
if (real_target_type == TypeManager.short_type)
return new OpcodeCast (expr, target_type, OpCodes.Conv_I2);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
} else if (expr_type == TypeManager.byte_type){
//
// From byte to short, ushort, int, uint, long, ulong, float, double
return new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
if (real_target_type == TypeManager.double_type)
return new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
} else if (expr_type == TypeManager.short_type){
//
// From short to int, long, float, double
return new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
if (real_target_type == TypeManager.float_type)
return new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
} else if (expr_type == TypeManager.ushort_type){
//
// From ushort to int, uint, long, ulong, float, double
return new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
if (real_target_type == TypeManager.float_type)
return new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
} else if (expr_type == TypeManager.int32_type){
//
// From int to long, float, double
return new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
if (real_target_type == TypeManager.float_type)
return new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
} else if (expr_type == TypeManager.uint32_type){
//
// From uint to long, ulong, float, double
if (real_target_type == TypeManager.float_type)
return new OpcodeCast (expr, target_type, OpCodes.Conv_R_Un,
OpCodes.Conv_R4);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
} else if (expr_type == TypeManager.int64_type){
//
// From long/ulong to float, double
return new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
if (real_target_type == TypeManager.float_type)
return new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
} else if (expr_type == TypeManager.uint64_type){
//
// From ulong to float, double
if (real_target_type == TypeManager.float_type)
return new OpcodeCast (expr, target_type, OpCodes.Conv_R_Un,
OpCodes.Conv_R4);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
} else if (expr_type == TypeManager.char_type){
//
// From char to ushort, int, uint, long, ulong, float, double
return new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
if (real_target_type == TypeManager.double_type)
return new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
+ } else if (expr_type == TypeManager.string_type){
+
+ if (real_target_type == TypeManager.bool_type)
+ return new OpcodeCast (expr, target_type, OpCodes.Conv_U1);
if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
+ return RTConversionExpression (ec, "System.Convert", ".ToDecimal" , expr, loc);
} else if (expr_type == TypeManager.float_type){
//
// float to double
//
+ if (real_target_type == TypeManager.decimal_type)
+ return RTConversionExpression (ec, "System.Convert", ".ToDecimal" , expr, loc);
if (real_target_type == TypeManager.double_type)
return new OpcodeCast (expr, target_type, OpCodes.Conv_R8);
- }
+
+ } else if (expr_type == TypeManager.double_type){
+
+ if (real_target_type == TypeManager.decimal_type)
+ return RTConversionExpression (ec, "System.Convert", ".ToDecimal" , expr, loc);
+ } else if (expr_type == TypeManager.decimal_type){
+
+ if (real_target_type == TypeManager.bool_type)
+ return RTConversionExpression (ec, "System.Convert", ".ToBoolean" , expr, loc);
+ if (real_target_type == TypeManager.short_type)
+ return RTConversionExpression (ec, "System.Convert", ".ToInt16" , expr, loc);
+ if (real_target_type == TypeManager.byte_type)
+ return RTConversionExpression (ec, "System.Convert", ".ToByte" , expr, loc);
+ if (real_target_type == TypeManager.int32_type)
+ return RTConversionExpression (ec, "System.Convert", ".ToInt32" , expr, loc);
+ if (real_target_type == TypeManager.int64_type)
+ return RTConversionExpression (ec, "System.Convert", ".ToInt64" , expr, loc);
+ if (real_target_type == TypeManager.float_type)
+ return RTConversionExpression (ec, "System.Convert", ".ToSingle" , expr, loc);
+ if (real_target_type == TypeManager.double_type)
+ return RTConversionExpression (ec, "System.Convert", ".ToDouble" , expr, loc);
+ if (real_target_type == TypeManager.char_type)
+ return RTConversionExpression (ec, "System.Convert", ".ToString" , expr, loc);
+ }
return null;
}
// Tests whether an implicit reference conversion exists between expr_type
// and target_type
//
- public static bool ImplicitReferenceConversionExists (Expression expr, Type target_type)
+ public static bool ImplicitReferenceConversionExists (Expression expr, Type expr_type, Type target_type)
{
- Type expr_type = expr.Type;
-
//
// This is the boxed case.
//
} else if (expr_type.IsSubclassOf (target_type)) {
return true;
-
} else {
// Please remember that all code below actually comes
// from ImplicitReferenceConversion so make sure code remains in sync
// from any class-type S to any interface-type T.
- if (expr_type.IsClass && target_type.IsInterface) {
+ if (target_type.IsInterface) {
if (TypeManager.ImplementsInterface (expr_type, target_type))
return true;
}
if (StandardConversionExists (expr, target_type) == true)
return true;
+#if false
Expression dummy = ImplicitUserConversion (ec, expr, target_type, Location.Null);
if (dummy != null)
return true;
+#endif
return false;
}
-
+
/// <summary>
/// Determines if a standard implicit conversion exists from
/// expr_type to target_type
/// </summary>
public static bool StandardConversionExists (Expression expr, Type target_type)
{
- Type expr_type = expr.Type;
+ return WideningConversionExists (expr, expr.type, target_type);
+ }
+
+ public static bool WideningConversionExists (Type expr_type, Type target_type)
+ {
+ return WideningConversionExists (null, expr_type, target_type);
+ }
+
+ public static bool WideningConversionExists (Expression expr, Type target_type)
+ {
+ return WideningConversionExists (expr, expr.Type, target_type);
+ }
- if (expr_type == TypeManager.void_type)
+ public static bool WideningConversionExists (Expression expr, Type expr_type, Type target_type)
+ {
+
+ if (expr_type == null || expr_type == TypeManager.void_type)
return false;
if (expr_type == target_type)
return true;
- // First numeric conversions
+ // Conversions from enum to underlying type are widening.
+ if (expr_type.IsSubclassOf (TypeManager.enum_type))
+ expr_type = TypeManager.EnumToUnderlying (expr_type);
+ if (expr_type == target_type)
+ return true;
+
+ // First numeric conversions
+
if (expr_type == TypeManager.sbyte_type){
//
// From sbyte to short, int, long, float, double.
// From byte to short, ushort, int, uint, long, ulong, float, double
//
if ((target_type == TypeManager.short_type) ||
+ (target_type == TypeManager.bool_type) ||
(target_type == TypeManager.ushort_type) ||
(target_type == TypeManager.int32_type) ||
(target_type == TypeManager.uint32_type) ||
// From short to int, long, float, double
//
if ((target_type == TypeManager.int32_type) ||
+ (target_type == TypeManager.bool_type) ||
(target_type == TypeManager.int64_type) ||
(target_type == TypeManager.double_type) ||
(target_type == TypeManager.float_type) ||
// From int to long, float, double
//
if ((target_type == TypeManager.int64_type) ||
+ (target_type == TypeManager.bool_type) ||
(target_type == TypeManager.double_type) ||
(target_type == TypeManager.float_type) ||
(target_type == TypeManager.decimal_type))
// From uint to long, ulong, float, double
//
if ((target_type == TypeManager.int64_type) ||
+ (target_type == TypeManager.bool_type) ||
(target_type == TypeManager.uint64_type) ||
(target_type == TypeManager.double_type) ||
(target_type == TypeManager.float_type) ||
// From long/ulong to float, double
//
if ((target_type == TypeManager.double_type) ||
+ (target_type == TypeManager.bool_type) ||
(target_type == TypeManager.float_type) ||
(target_type == TypeManager.decimal_type))
return true;
} else if (expr_type == TypeManager.float_type){
//
- // float to double
+ // float to double, decimal
//
if (target_type == TypeManager.double_type)
return true;
- }
+ } else if (expr_type == TypeManager.double_type){
+
+ if ((target_type == TypeManager.bool_type))
+ return true;
+ }
- if (ImplicitReferenceConversionExists (expr, target_type))
+ if (ImplicitReferenceConversionExists (expr, expr_type, target_type))
return true;
if (expr is IntConstant){
return true;
}
+ if (target_type == TypeManager.void_ptr_type && expr_type.IsPointer)
+ return true;
+
return false;
}
/// by making use of FindMostEncomp* methods. Applies the correct rules separately
/// for explicit and implicit conversion operators.
/// </summary>
- static public Type FindMostSpecificSource (MethodGroupExpr me, Type source_type,
+ static public Type FindMostSpecificSource (MethodGroupExpr me, Expression source,
bool apply_explicit_conv_rules,
Location loc)
{
if (priv_fms_expr == null)
priv_fms_expr = new EmptyExpression ();
-
+
//
// If any operator converts from S then Sx = S
//
+ Type source_type = source.Type;
foreach (MethodBase mb in me.Methods){
ParameterData pd = Invocation.GetParameterData (mb);
Type param_type = pd.ParameterType (0);
if (StandardConversionExists (priv_fms_expr, source_type))
src_types_set.Add (param_type);
else {
- priv_fms_expr.SetType (source_type);
- if (StandardConversionExists (priv_fms_expr, param_type))
+ if (StandardConversionExists (source, param_type))
src_types_set.Add (param_type);
}
} else {
//
// Only if S is encompassed by param_type
//
- priv_fms_expr.SetType (source_type);
- if (StandardConversionExists (priv_fms_expr, param_type))
+ if (StandardConversionExists (source, param_type))
src_types_set.Add (param_type);
}
}
ArrayList candidate_set = new ArrayList ();
foreach (Type param_type in src_types_set){
- priv_fms_expr.SetType (source_type);
-
- if (StandardConversionExists (priv_fms_expr, param_type))
+ if (StandardConversionExists (source, param_type))
candidate_set.Add (param_type);
}
//
if (apply_explicit_conv_rules)
return FindMostEncompassedType (tgt_types_set);
- else
+ else
return FindMostEncompassingType (tgt_types_set);
}
/// <summary>
/// Computes the MethodGroup for the user-defined conversion
- /// operators from source_type to target_type. `look_for_explicit'
+ /// operators from source_type to target_type. 'look_for_explicit'
/// controls whether we should also include the list of explicit
/// operators
/// </summary>
}
#endif
- most_specific_source = FindMostSpecificSource (union, source_type, look_for_explicit, loc);
+ most_specific_source = FindMostSpecificSource (union, source, look_for_explicit, loc);
if (most_specific_source == null)
return null;
most_specific_target = FindMostSpecificTarget (union, target, look_for_explicit, loc);
if (most_specific_target == null)
return null;
-
+
int count = 0;
foreach (MethodBase mb in union.Methods){
}
}
- if (method == null || count > 1) {
- Report.Error (-11, loc, "Ambiguous user defined conversion");
+ if (method == null || count > 1)
return null;
- }
+
//
// This will do the conversion to the best match that we
}
/// <summary>
- /// Converts implicitly the resolved expression `expr' into the
- /// `target_type'. It returns a new expression that can be used
- /// in a context that expects a `target_type'.
+ /// Converts implicitly the resolved expression 'expr' into the
+ /// 'target_type'. It returns a new expression that can be used
+ /// in a context that expects a 'target_type'.
/// </summary>
static public Expression ConvertImplicit (EmitContext ec, Expression expr,
Type target_type, Location loc)
Type expr_type = expr.Type;
Expression e;
+
if (expr_type == target_type)
return expr;
e = ConvertImplicitStandard (ec, expr, target_type, loc);
if (e != null)
return e;
-
+
e = ImplicitUserConversion (ec, expr, target_type, loc);
+
if (e != null)
return e;
+
+ e = NarrowingConversion (ec, expr, target_type, loc);
+ if (e != null)
+ return e;
return null;
}
+ /// <summary>
+ /// Converts the resolved expression 'expr' into the
+ /// 'target_type' using the Microsoft.VisualBasic runtime.
+ /// It returns a new expression that can be used
+ /// in a context that expects a 'target_type'.
+ /// </summary>
+ static private Expression RTConversionExpression (EmitContext ec, string s, Expression expr, Location loc)
+ {
+ Expression etmp, e;
+ ArrayList args;
+ Argument arg;
+
+ etmp = Mono.MonoBASIC.Parser.DecomposeQI("Microsoft.VisualBasic.CompilerServices." + s, loc);
+ args = new ArrayList();
+ arg = new Argument (expr, Argument.AType.Expression);
+ args.Add (arg);
+ e = (Expression) new Invocation (etmp, args, loc);
+ e = e.Resolve(ec);
+ return (e);
+ }
+
+ static private Expression RTConversionExpression (EmitContext ec, string ns, string method, Expression expr, Location loc)
+ {
+ Expression etmp, e;
+ ArrayList args;
+ Argument arg;
+
+ etmp = Mono.MonoBASIC.Parser.DecomposeQI(ns+method, loc);
+ args = new ArrayList();
+ arg = new Argument (expr, Argument.AType.Expression);
+ args.Add (arg);
+ e = (Expression) new Invocation (etmp, args, loc);
+ e = e.Resolve(ec);
+ return (e);
+ }
+
+
+ static public bool NarrowingConversionExists (EmitContext ec, Expression expr, Type target_type)
+ {
+ Type expr_type = expr.Type;
+
+ if (target_type == TypeManager.sbyte_type){
+ //
+ // To sbyte from short, int, long, float, double.
+ //
+ if ((expr_type == TypeManager.int32_type) ||
+ (expr_type == TypeManager.int64_type) ||
+ (expr_type == TypeManager.double_type) ||
+ (expr_type == TypeManager.float_type) ||
+ (expr_type == TypeManager.short_type) ||
+ (expr_type == TypeManager.decimal_type))
+ return true;
+
+ } else if (target_type == TypeManager.byte_type){
+ //
+ // To byte from short, ushort, int, uint, long, ulong, float, double
+ //
+ if ((expr_type == TypeManager.short_type) ||
+ (expr_type == TypeManager.ushort_type) ||
+ (expr_type == TypeManager.int32_type) ||
+ (expr_type == TypeManager.uint32_type) ||
+ (expr_type == TypeManager.uint64_type) ||
+ (expr_type == TypeManager.int64_type) ||
+ (expr_type == TypeManager.float_type) ||
+ (expr_type == TypeManager.double_type) ||
+ (expr_type == TypeManager.decimal_type))
+ return true;
+
+ } else if (target_type == TypeManager.short_type){
+ //
+ // To short from int, long, float, double
+ //
+ if ((expr_type == TypeManager.int32_type) ||
+ (expr_type == TypeManager.int64_type) ||
+ (expr_type == TypeManager.double_type) ||
+ (expr_type == TypeManager.float_type) ||
+ (expr_type == TypeManager.decimal_type))
+ return true;
+
+ } else if (target_type == TypeManager.ushort_type){
+ //
+ // To ushort from int, uint, long, ulong, float, double
+ //
+ if ((expr_type == TypeManager.uint32_type) ||
+ (expr_type == TypeManager.uint64_type) ||
+ (expr_type == TypeManager.int32_type) ||
+ (expr_type == TypeManager.int64_type) ||
+ (expr_type == TypeManager.double_type) ||
+ (expr_type == TypeManager.float_type) ||
+ (expr_type == TypeManager.decimal_type))
+ return true;
+
+ } else if (target_type == TypeManager.int32_type){
+ //
+ // To int from long, float, double
+ //
+ if ((expr_type == TypeManager.int64_type) ||
+ (expr_type == TypeManager.double_type) ||
+ (expr_type == TypeManager.float_type) ||
+ (expr_type == TypeManager.decimal_type))
+ return true;
+
+ } else if (target_type == TypeManager.uint32_type){
+ //
+ // To uint from long, ulong, float, double
+ //
+ if ((expr_type == TypeManager.int64_type) ||
+ (expr_type == TypeManager.uint64_type) ||
+ (expr_type == TypeManager.double_type) ||
+ (expr_type == TypeManager.float_type) ||
+ (expr_type == TypeManager.decimal_type))
+ return true;
+
+ } else if ((target_type == TypeManager.uint64_type) ||
+ (target_type == TypeManager.int64_type)) {
+ //
+ // To long/ulong from float, double
+ //
+ if ((expr_type == TypeManager.double_type) ||
+ (expr_type == TypeManager.float_type) ||
+ (expr_type == TypeManager.decimal_type))
+ return true;
+
+ } else if (target_type == TypeManager.char_type){
+ //
+ // To char from ushort, int, uint, long, ulong, float, double
+ //
+ if ((expr_type == TypeManager.ushort_type) ||
+ (expr_type == TypeManager.int32_type) ||
+ (expr_type == TypeManager.uint32_type) ||
+ (expr_type == TypeManager.uint64_type) ||
+ (expr_type == TypeManager.int64_type) ||
+ (expr_type == TypeManager.float_type) ||
+ (expr_type == TypeManager.double_type) ||
+ (expr_type == TypeManager.decimal_type))
+ return true;
+
+ } else if (target_type == TypeManager.float_type){
+ //
+ // To float from double
+ //
+ if (expr_type == TypeManager.double_type)
+ return true;
+ }
+
+ return (NarrowingConversion (ec, expr, target_type,Location.Null)) != null;
+ }
+ static public Expression NarrowingConversion (EmitContext ec, Expression expr,
+ Type target_type, Location loc)
+ {
+ Type expr_type = expr.Type;
+
+ if (target_type == TypeManager.sbyte_type){
+ //
+ // To sbyte from short, int, long, float, double.
+ //
+ if ((expr_type == TypeManager.int32_type) ||
+ (expr_type == TypeManager.int64_type) ||
+ (expr_type == TypeManager.double_type) ||
+ (expr_type == TypeManager.float_type) ||
+ (expr_type == TypeManager.short_type) ||
+ (expr_type == TypeManager.decimal_type))
+ return new OpcodeCast (expr, target_type, OpCodes.Conv_I1);
+
+ } else if (target_type == TypeManager.byte_type){
+ //
+ // To byte from short, ushort, int, uint, long, ulong, float, double
+ //
+ if ((expr_type == TypeManager.short_type) ||
+ (expr_type == TypeManager.ushort_type) ||
+ (expr_type == TypeManager.int32_type) ||
+ (expr_type == TypeManager.uint32_type) ||
+ (expr_type == TypeManager.uint64_type) ||
+ (expr_type == TypeManager.int64_type) ||
+ (expr_type == TypeManager.float_type) ||
+ (expr_type == TypeManager.double_type) ||
+ (expr_type == TypeManager.decimal_type))
+ return new OpcodeCast (expr, target_type, OpCodes.Conv_U1);
+
+ } else if (target_type == TypeManager.short_type){
+ //
+ // To short from int, long, float, double
+ //
+ if ((expr_type == TypeManager.int32_type) ||
+ (expr_type == TypeManager.int64_type) ||
+ (expr_type == TypeManager.double_type) ||
+ (expr_type == TypeManager.float_type) ||
+ (expr_type == TypeManager.decimal_type))
+
+ return new OpcodeCast (expr, target_type, OpCodes.Conv_I2);
+
+ } else if (target_type == TypeManager.ushort_type){
+ //
+ // To ushort from int, uint, long, ulong, float, double
+ //
+ if ((expr_type == TypeManager.uint32_type) ||
+ (expr_type == TypeManager.uint64_type) ||
+ (expr_type == TypeManager.int32_type) ||
+ (expr_type == TypeManager.int64_type) ||
+ (expr_type == TypeManager.double_type) ||
+ (expr_type == TypeManager.float_type) ||
+ (expr_type == TypeManager.decimal_type))
+ return new OpcodeCast (expr, target_type, OpCodes.Conv_U2);
+
+ } else if (target_type == TypeManager.int32_type){
+ //
+ // To int from long, float, double
+ //
+ if ((expr_type == TypeManager.int64_type) ||
+ (expr_type == TypeManager.double_type) ||
+ (expr_type == TypeManager.float_type) ||
+ (expr_type == TypeManager.decimal_type))
+ return new OpcodeCast (expr, target_type, OpCodes.Conv_I4);
+
+ } else if (target_type == TypeManager.uint32_type){
+ //
+ // To uint from long, ulong, float, double
+ //
+ if ((expr_type == TypeManager.int64_type) ||
+ (expr_type == TypeManager.uint64_type) ||
+ (expr_type == TypeManager.double_type) ||
+ (expr_type == TypeManager.float_type) ||
+ (expr_type == TypeManager.decimal_type))
+ return new OpcodeCast (expr, target_type, OpCodes.Conv_U4);
+
+ } else if ((target_type == TypeManager.uint64_type) ||
+ (target_type == TypeManager.int64_type)) {
+ //
+ // To long/ulong from float, double
+ //
+ if ((expr_type == TypeManager.double_type) ||
+ (expr_type == TypeManager.float_type) ||
+ (expr_type == TypeManager.decimal_type))
+ return new OpcodeCast (expr, target_type, OpCodes.Conv_I8);
+
+ } else if (target_type == TypeManager.char_type){
+ //
+ // To char from ushort, int, uint, long, ulong, float, double
+ //
+ if ((expr_type == TypeManager.ushort_type) ||
+ (expr_type == TypeManager.int32_type) ||
+ (expr_type == TypeManager.uint32_type) ||
+ (expr_type == TypeManager.uint64_type) ||
+ (expr_type == TypeManager.int64_type) ||
+ (expr_type == TypeManager.float_type) ||
+ (expr_type == TypeManager.double_type) ||
+ (expr_type == TypeManager.decimal_type))
+ return new OpcodeCast (expr, target_type, OpCodes.Conv_U2);
+
+ } else if (target_type == TypeManager.float_type){
+ //
+ // To float from double
+ //
+ if (expr_type == TypeManager.double_type)
+ return new OpcodeCast (expr, target_type, OpCodes.Conv_R4);
+ }
+
+ TypeCode dest_type = Type.GetTypeCode (target_type);
+ TypeCode src_type = Type.GetTypeCode (expr_type);
+ Expression e = null;
+
+ // VB.NET Objects can be converted to anything by default
+ // unless, that is, an exception at runtime blows it all
+ if (src_type == TypeCode.Object) {
+ Expression cast_type = Mono.MonoBASIC.Parser.DecomposeQI(target_type.ToString(), loc);
+ Cast ce = new Cast (cast_type, expr, loc);
+ ce.IsRuntimeCast = true;
+ return ce.Resolve (ec);
+ }
+
+ switch (dest_type) {
+ case TypeCode.String:
+ switch (src_type) {
+ case TypeCode.SByte:
+ case TypeCode.Byte:
+ e = RTConversionExpression(ec, "StringType.FromByte", expr, loc);
+ break;
+ case TypeCode.UInt16:
+ case TypeCode.Int16:
+ e = RTConversionExpression(ec, "StringType.FromShort", expr, loc);
+ break;
+ case TypeCode.UInt32:
+ case TypeCode.Int32:
+ e = RTConversionExpression(ec, "StringType.FromInteger", expr, loc);
+ break;
+ case TypeCode.UInt64:
+ case TypeCode.Int64:
+ e = RTConversionExpression(ec, "StringType.FromLong", expr, loc);
+ break;
+ case TypeCode.Char:
+ e = RTConversionExpression(ec, "StringType.FromChar", expr, loc);
+ break;
+ case TypeCode.Single:
+ e = RTConversionExpression(ec, "StringType.FromSingle", expr, loc);
+ break;
+ case TypeCode.Double:
+ e = RTConversionExpression(ec, "StringType.FromDouble", expr, loc);
+ break;
+ case TypeCode.Boolean:
+ e = RTConversionExpression(ec, "StringType.FromBoolean", expr, loc);
+ break;
+ case TypeCode.DateTime:
+ e = RTConversionExpression(ec, "StringType.FromDate", expr, loc);
+ break;
+ case TypeCode.Decimal:
+ e = RTConversionExpression(ec, "StringType.FromDecimal", expr, loc);
+ break;
+ case TypeCode.Object:
+ e = RTConversionExpression(ec, "StringType.FromObject", expr, loc);
+ break;
+ }
+ break;
+
+ case TypeCode.Int32:
+ case TypeCode.UInt32:
+ switch (src_type) {
+ case TypeCode.String:
+ e = RTConversionExpression(ec, "IntegerType.FromString", expr, loc);
+ break;
+ case TypeCode.Object:
+ e = RTConversionExpression(ec, "IntegerType.FromObject", expr, loc);
+ break;
+ }
+ break;
+
+ case TypeCode.Int16:
+ case TypeCode.UInt16:
+ switch (src_type) {
+ case TypeCode.String:
+ e = RTConversionExpression(ec, "ShortType.FromString", expr, loc);
+ break;
+ case TypeCode.Object:
+ e = RTConversionExpression(ec, "ShortType.FromObject", expr, loc);
+ break;
+ }
+ break;
+ case TypeCode.Byte:
+ // Ok, this *is* broken
+ e = RTConversionExpression(ec, "ByteType.FromObject", expr, loc);
+ break;
+ case TypeCode.DateTime:
+ switch (src_type) {
+ case TypeCode.String:
+ e = RTConversionExpression(ec, "DateType.FromString", expr, loc);
+ break;
+ case TypeCode.Object:
+ e = RTConversionExpression(ec, "DateType.FromObject", expr, loc);
+ break;
+ }
+ break;
+ }
+
+ // We must examine separately some types that
+ // don't have a TypeCode but are supported
+ // in the runtime
+ if (expr_type == typeof(System.String) && target_type == typeof (System.Char[])) {
+ e = RTConversionExpression(ec, "CharArrayType.FromString", expr, loc);
+ }
+
+ return e;
+ }
+
/// <summary>
- /// Attempts to apply the `Standard Implicit
- /// Conversion' rules to the expression `expr' into
- /// the `target_type'. It returns a new expression
+ /// Attempts to apply the 'Standard Implicit
+ /// Conversion' rules to the expression 'expr' into
+ /// the 'target_type'. It returns a new expression
/// that can be used in a context that expects a
- /// `target_type'.
+ /// 'target_type'.
///
- /// This is different from `ConvertImplicit' in that the
+ /// This is different from 'ConvertImplicit' in that the
/// user defined implicit conversions are excluded.
/// </summary>
static public Expression ConvertImplicitStandard (EmitContext ec, Expression expr,
return expr;
e = ImplicitNumericConversion (ec, expr, target_type, loc);
+
if (e != null)
return e;
if (e != null)
return e;
- if (target_type.IsSubclassOf (TypeManager.enum_type) && expr is IntLiteral){
- IntLiteral i = (IntLiteral) expr;
-
- if (i.Value == 0)
- return new EmptyCast (expr, target_type);
+ if (expr.Type.IsSubclassOf (TypeManager.enum_type)) {
+ expr_type = TypeManager.EnumToUnderlying (expr.Type);
+ expr = new EmptyCast (expr, expr_type);
+ if (expr_type == target_type)
+ return expr;
+ e = ImplicitNumericConversion (ec, expr, target_type, loc);
+ if (e != null)
+ return e;
}
if (ec.InUnsafe) {
return new ULongConstant ((ulong) value);
}
- if (value == 0 && ic is IntLiteral && TypeManager.IsEnumType (target_type))
- return new EnumConstant (ic, target_type);
-
+ if (value == 0 && ic is IntLiteral && TypeManager.IsEnumType (target_type)){
+ Type underlying = TypeManager.EnumToUnderlying (target_type);
+ Constant e = (Constant) ic;
+
+ //
+ // Possibly, we need to create a different 0 literal before passing
+ // to EnumConstant
+ //n
+ if (underlying == TypeManager.int64_type)
+ e = new LongLiteral (0);
+ else if (underlying == TypeManager.uint64_type)
+ e = new ULongLiteral (0);
+
+ return new EnumConstant (e, target_type);
+ }
return null;
}
static public void Error_CannotConvertImplicit (Location loc, Type source, Type target)
{
- string msg = "Cannot convert implicitly from `"+
- TypeManager.CSharpName (source) + "' to `" +
- TypeManager.CSharpName (target) + "'";
+ string msg = "Cannot convert implicitly from '"+
+ TypeManager.MonoBASIC_Name (source) + "' to '" +
+ TypeManager.MonoBASIC_Name (target) + "'";
+
+ throw new Exception (msg);
Report.Error (29, loc, msg);
}
/// <summary>
- /// Attemptes to implicityly convert `target' into `type', using
+ /// Attemptes to implicityly convert 'target' into 'type', using
/// ConvertImplicit. If there is no implicit conversion, then
/// an error is signaled
/// </summary>
Expression e;
e = ConvertImplicit (ec, source, target_type, loc);
+
if (e != null)
return e;
+
if (source is DoubleLiteral && target_type == TypeManager.float_type){
Report.Error (664, loc,
"Double literal cannot be implicitly converted to " +
"float type, use F suffix to create a float literal");
}
-
+
Error_CannotConvertImplicit (loc, source.Type, target_type);
return null;
/// <summary>
/// Performs the explicit numeric conversions
/// </summary>
- static Expression ConvertNumericExplicit (EmitContext ec, Expression expr, Type target_type)
+ static Expression ConvertNumericExplicit (EmitContext ec, Expression expr, Type target_type, Location loc)
{
Type expr_type = expr.Type;
//
// If we have an enumeration, extract the underlying type,
- // use this during the comparission, but wrap around the original
+ // use this during the comparison, but wrap around the original
// target_type
//
Type real_target_type = target_type;
if (TypeManager.IsEnumType (real_target_type))
real_target_type = TypeManager.EnumToUnderlying (real_target_type);
+ if (StandardConversionExists (expr, real_target_type)){
+ Expression ce = ConvertImplicitStandard (ec, expr, real_target_type, loc);
+
+ if (real_target_type != target_type)
+ return new EmptyCast (ce, target_type);
+ return ce;
+ }
+
if (expr_type == TypeManager.sbyte_type){
//
// From sbyte to byte, ushort, uint, ulong, char
return new ConvCast (ec, expr, target_type, ConvCast.Mode.R4_U8);
if (real_target_type == TypeManager.char_type)
return new ConvCast (ec, expr, target_type, ConvCast.Mode.R4_CH);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
} else if (expr_type == TypeManager.double_type){
//
// From double to byte, byte, short,
return new ConvCast (ec, expr, target_type, ConvCast.Mode.R8_CH);
if (real_target_type == TypeManager.float_type)
return new ConvCast (ec, expr, target_type, ConvCast.Mode.R8_R4);
- if (real_target_type == TypeManager.decimal_type)
- return InternalTypeConstructor (ec, expr, target_type);
}
// decimal is taken care of by the op_Explicit methods.
}
/// <summary>
- /// Performs an explicit conversion of the expression `expr' whose
- /// type is expr.Type to `target_type'.
+ /// Performs an explicit conversion of the expression 'expr' whose
+ /// type is expr.Type to 'target_type'.
/// </summary>
static public Expression ConvertExplicit (EmitContext ec, Expression expr,
- Type target_type, Location loc)
+ Type target_type, bool runtimeconv, Location loc)
{
Type expr_type = expr.Type;
Expression ne = ConvertImplicitStandard (ec, expr, target_type, loc);
if (ne != null)
return ne;
- ne = ConvertNumericExplicit (ec, expr, target_type);
+ ne = ConvertNumericExplicit (ec, expr, target_type, loc);
if (ne != null)
return ne;
if (t != null)
return t;
- return ConvertNumericExplicit (ec, e, target_type);
+ t = ConvertNumericExplicit (ec, e, target_type, loc);
+ if (t != null)
+ return t;
+
+ t = NarrowingConversion (ec, e, target_type, loc);
+ if (t != null)
+ return t;
+
+ Error_CannotConvertType (loc, expr_type, target_type);
+ return null;
}
ne = ConvertReferenceExplicit (expr, target_type);
if (ci != null)
return ci;
- ce = ConvertNumericExplicit (ec, e, target_type);
+ ce = ConvertNumericExplicit (ec, e, target_type, loc);
if (ce != null)
return ce;
//
if (ne != null)
return ne;
- Error_CannotConvertType (loc, expr_type, target_type);
+ if (!(runtimeconv)) {
+ ne = NarrowingConversion (ec, expr, target_type, loc);
+ if (ne != null)
+ return ne;
+
+ Error_CannotConvertType (loc, expr_type, target_type);
+ }
return null;
}
if (ne != null)
return ne;
- ne = ConvertNumericExplicit (ec, expr, target_type);
+ ne = ConvertNumericExplicit (ec, expr, target_type, l);
if (ne != null)
return ne;
if (ne != null)
return ne;
+ ne = NarrowingConversion (ec, expr, target_type, l);
+ if (ne != null)
+ return ne;
+
Error_CannotConvertType (l, expr.Type, target_type);
return null;
}
}
/// <summary>
- /// Reports that we were expecting `expr' to be of class `expected'
+ /// Reports that we were expecting 'expr' to be of class 'expected'
/// </summary>
public void Error118 (string expected)
{
kind = ExprClassName (eclass);
- Error (118, "Expression denotes a `" + kind +
- "' where a `" + expected + "' was expected");
+ Error (118, "Expression denotes a '" + kind +
+ "' where a '" + expected + "' was expected");
}
public void Error118 (ResolveFlags flags)
string kind = ExprClassName (eclass);
- Error (119, "Expression denotes a `" + kind + "' where " +
- "a `" + sb.ToString () + "' was expected");
+ Error (119, "Expression denotes a '" + kind + "' where " +
+ "a '" + sb.ToString () + "' was expected");
}
static void Error_ConstantValueCannotBeConverted (Location l, string val, Type t)
{
- Report.Error (31, l, "Constant value `" + val + "' cannot be converted to " +
- TypeManager.CSharpName (t));
+ Report.Error (31, l, "Constant value '" + val + "' cannot be converted to " +
+ TypeManager.MonoBASIC_Name (t));
}
public static void UnsafeError (Location loc)
/// <summary>
/// Converts the IntConstant, UIntConstant, LongConstant or
/// ULongConstant into the integral target_type. Notice
- /// that we do not return an `Expression' we do return
+ /// that we do not return an 'Expression' we do return
/// a boxed integral type.
///
/// FIXME: Since I added the new constants, we need to
}
//
- // The stack contains the pointer and the value of type `type'
+ // The stack contains the pointer and the value of type 'type'
//
public static void StoreFromPtr (ILGenerator ig, Type type)
{
- if (type.IsEnum)
+ if (TypeManager.IsEnumType (type))
type = TypeManager.EnumToUnderlying (type);
if (type == TypeManager.int32_type || type == TypeManager.uint32_type)
ig.Emit (OpCodes.Stind_I4);
}
//
- // Returns the size of type `t' if known, otherwise, 0
+ // Returns the size of type 't' if known, otherwise, 0
//
public static int GetTypeSize (Type t)
{
t == TypeManager.char_type ||
t == TypeManager.ushort_type)
return 2;
+ else if (t == TypeManager.decimal_type)
+ return 16;
else
return 0;
}
}
//
- // Converts `source' to an int, uint, long or ulong.
+ // Converts 'source' to an int, uint, long or ulong.
//
public Expression ExpressionToArrayArgument (EmitContext ec, Expression source, Location loc)
{
public abstract class ExpressionStatement : Expression {
/// <summary>
- /// Requests the expression to be emitted in a `statement'
+ /// Requests the expression to be emitted in a 'statement'
/// context. This means that no new value is left on the
/// stack after invoking this method (constrasted with
/// Emit that will always leave a value on the stack).
: base (child, return_type)
{
+
this.op = op;
second_valid = false;
}
}
}
+
+ public class NumericToBoolCast : EmptyCast
+ {
+ Type src_type;
+
+ public NumericToBoolCast (Expression src, Type src_type)
+ : base (src, TypeManager.bool_type)
+
+ {
+ this.src_type = src_type;
+ }
+
+ public override Expression DoResolve (EmitContext ec)
+ {
+ return this;
+ }
+
+ public override void Emit (EmitContext ec)
+ {
+ base.Emit (ec);
+
+ if (src_type == TypeManager.byte_type ||
+ src_type == TypeManager.short_type ||
+ src_type == TypeManager.int32_type) {
+
+ ec.ig.Emit (OpCodes.Ldc_I4_0);
+ ec.ig.Emit (OpCodes.Cgt_Un);
+ return;
+ }
+
+ if (src_type == TypeManager.int64_type) {
+ ec.ig.Emit (OpCodes.Ldc_I8, (long) 0);
+ ec.ig.Emit (OpCodes.Cgt_Un);
+ return;
+ }
+
+ if (src_type == TypeManager.float_type) {
+ ec.ig.Emit (OpCodes.Ldc_R4, (float) 0);
+ ec.ig.Emit (OpCodes.Ceq);
+ ec.ig.Emit (OpCodes.Ldc_I4_0);
+ ec.ig.Emit (OpCodes.Ceq);
+ return;
+ }
+
+ if (src_type == TypeManager.double_type) {
+ ec.ig.Emit (OpCodes.Ldc_R8, (double) 0);
+ ec.ig.Emit (OpCodes.Ceq);
+ ec.ig.Emit (OpCodes.Ldc_I4_0);
+ ec.ig.Emit (OpCodes.Ceq);
+ return;
+ }
+ }
+ }
+
/// <summary>
/// This kind of cast is used to encapsulate a child and cast it
/// to the class requested
/// creating a namespace map from the assemblies, as that requires
/// the GetExportedTypes function to be called and a hashtable to
/// be constructed which reduces startup time. If later we find
- /// that this is slower, we should create a `NamespaceExpr' expression
+ /// that this is slower, we should create a 'NamespaceExpr' expression
/// that fully participates in the resolution process.
///
- /// For example `System.Console.WriteLine' is decomposed into
+ /// For example 'System.Console.WriteLine' is decomposed into
/// MemberAccess (MemberAccess (SimpleName ("System"), "Console"), "WriteLine")
///
/// The first SimpleName wont produce a match on its own, so it will
///
/// System.Console will produce a TypeExpr match.
///
- /// The downside of this is that we might be hitting `LookupType' too many
+ /// The downside of this is that we might be hitting 'LookupType' too many
/// times with this scheme.
/// </remarks>
public class SimpleName : Expression, ITypeExpression {
Report.Error (
236, l,
"A field initializer cannot reference the non-static field, " +
- "method or property `"+name+"'");
+ "method or property '"+name+"'");
else
Report.Error (
120, l,
"An object reference is required " +
- "for the non-static field `"+name+"'");
+ "for the non-static field '"+name+"'");
}
//
Type t;
string alias_value;
+ if (ec.ResolvingTypeTree){
+ int errors = Report.Errors;
+ Type dt = ec.DeclSpace.FindType (loc, Name);
+ if (Report.Errors != errors)
+ return null;
+
+ if (dt != null)
+ return new TypeExpr (dt, loc);
+ }
+
if ((t = RootContext.LookupType (ds, Name, true, loc)) != null)
return new TypeExpr (t, loc);
+
//
// Stage 2 part b: Lookup up if we are an alias to a type
// or a namespace.
return new SimpleName (alias_value, loc);
}
- if (ec.ResolvingTypeTree){
- Type dt = ec.DeclSpace.FindType (Name);
- if (dt != null)
- return new TypeExpr (dt, loc);
- }
-
// No match, maybe our parent can compose us
// into something meaningful.
return this;
/// Local Variables and Parameters are handled at
/// parse time, so they never occur as SimpleNames.
///
- /// The `allow_static' flag is used by MemberAccess only
+ /// 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
Expression SimpleNameResolve (EmitContext ec, Expression right_side, bool allow_static)
{
Expression e = null;
-
+
//
// Stage 1: Performed by the parser (binding to locals or parameters).
//
Block current_block = ec.CurrentBlock;
- if (current_block != null && current_block.IsVariableDefined (Name)){
+ if (ec.InvokingOwnOverload == false && current_block != null && current_block.IsVariableDefined (Name)){
LocalVariableReference var;
var = new LocalVariableReference (ec.CurrentBlock, Name, loc);
if (e == null && ec.ContainerType != null)
e = MemberLookup (ec, ec.ContainerType, Name, loc);
+// #52067 - Start - Trying to solve
+
+ if (e == null) {
+
+ ArrayList lookups = new ArrayList();
+ ArrayList typelookups = new ArrayList();
+
+ int split = Name.LastIndexOf('.');
+ if (split != -1) {
+ String nameSpacePart = Name.Substring(0, split);
+ String memberNamePart = Name.Substring(split + 1);
+ foreach(Type type in TypeManager.GetPertinentStandardModules(nameSpacePart)) {
+ e = MemberLookup(ec, type, memberNamePart, loc);
+ if (e != null) {
+ lookups.Add(e);
+ typelookups.Add(type);
+ }
+ }
+ }
+
+ string[] NamespacesInScope = RootContext.SourceBeingCompiled.GetNamespacesInScope(ec.DeclSpace.Namespace.Name);
+ foreach(Type type in TypeManager.GetPertinentStandardModules(NamespacesInScope)) {
+ e = MemberLookup(ec, type, Name, loc);
+ if (e != null) {
+ lookups.Add(e);
+ typelookups.Add(type);
+ }
+ }
+ if (lookups.Count == 1) {
+ e = (Expression)lookups[0];
+ } else {
+ if (lookups.Count > 1) {
+ StringBuilder sb = new StringBuilder();
+ foreach(Type type in typelookups)
+ sb.Append("'" + type.FullName + "'");
+ Error (-1, "The name '" + Name + "' can be resolved to a member of more than one standard module: " + sb.ToString() + ". Please fully qualify it.");
+ return null;
+ }
+ }
+ }
+
+// #52067 - End
+
if (e == null)
return DoResolveType (ec);
if (!me.IsStatic && (me.InstanceExpression == null))
return e;
+/* FIXME If this is not commented out, it seems that it's not possible to reach class members in mBas.
+ Maybe a grammar-related problem?
+
+ if (!me.IsStatic &&
+ TypeManager.IsNestedChildOf (me.InstanceExpression.Type, me.DeclaringType)) {
+ Error (38, "Cannot access nonstatic member '" + me.Name + "' of " +
+ "outer type '" + me.DeclaringType + "' via nested type '" +
+ me.InstanceExpression.Type + "'");
+ return null;
+ }
+*/
if (right_side != null)
e = e.DoResolveLValue (ec, right_side);
else
e = e.DoResolve (ec);
- return e;
+ return e;
}
if (ec.IsStatic || ec.IsFieldInitializer){
// find the name as a namespace
//
- Error (103, "The name `" + Name +
- "' does not exist in the class `" +
+ Error (30451, "The name '" + Name +
+ "' does not exist in the class '" +
ec.DeclSpace.Name + "'");
}
eclass = ExprClass.MethodGroup;
type = TypeManager.object_type;
}
+
+ public Type DeclaringType {
+ get {
+ return Methods [0].DeclaringType;
+ }
+ }
//
- // `A method group may have associated an instance expression'
+ // 'A method group may have associated an instance expression'
//
public Expression InstanceExpression {
get {
override public Expression DoResolve (EmitContext ec)
{
+ if (instance_expression != null) {
+ instance_expression = instance_expression.DoResolve (ec);
+ if (instance_expression == null)
+ return null;
+ }
+
return this;
}
public void ReportUsageError ()
{
- Report.Error (654, loc, "Method `" + Methods [0].DeclaringType + "." +
+ Report.Error (654, loc, "Method '" + Methods [0].DeclaringType + "." +
Methods [0].Name + "()' is referenced without parentheses");
}
}
}
+ public Type DeclaringType {
+ get {
+ return FieldInfo.DeclaringType;
+ }
+ }
+
public Expression InstanceExpression {
get {
return instance_expr;
// Handle initonly fields specially: make a copy and then
// get the address of the copy.
//
- if (FieldInfo.IsInitOnly){
- if (ec.IsConstructor) {
- ig.Emit (OpCodes.Ldsflda, FieldInfo);
- } else {
- LocalBuilder local;
+ if (FieldInfo.IsInitOnly && !ec.IsConstructor){
+ LocalBuilder local;
- Emit (ec);
- local = ig.DeclareLocal (type);
- ig.Emit (OpCodes.Stloc, local);
- ig.Emit (OpCodes.Ldloca, local);
- }
+ Emit (ec);
+ local = ig.DeclareLocal (type);
+ ig.Emit (OpCodes.Stloc, local);
+ ig.Emit (OpCodes.Ldloca, local);
return;
}
/// <summary>
/// Expression that evaluates to a Property. The Assign class
- /// might set the `Value' expression if we are in an assignment.
+ /// might set the 'Value' expression if we are in an assignment.
///
/// This is not an LValue because we need to re-write the expression, we
/// can not take data from the stack and store it.
public class PropertyExpr : ExpressionStatement, IAssignMethod, IMemberExpr {
public readonly PropertyInfo PropertyInfo;
public bool IsBase;
- MethodInfo [] Accessors;
+ MethodInfo getter, setter;
bool is_static;
-
+ public ArrayList PropertyArgs;
+
Expression instance_expr;
- public PropertyExpr (PropertyInfo pi, Location l)
+ public PropertyExpr (EmitContext ec, PropertyInfo pi, Location l)
{
PropertyInfo = pi;
eclass = ExprClass.PropertyAccess;
+ PropertyArgs = new ArrayList();
is_static = false;
loc = l;
- Accessors = TypeManager.GetAccessors (pi);
- if (Accessors != null)
- foreach (MethodInfo mi in Accessors){
- if (mi != null)
- if (mi.IsStatic)
- is_static = true;
- }
- else
- Accessors = new MethodInfo [2];
-
type = TypeManager.TypeToCoreType (pi.PropertyType);
+
+ ResolveAccessors (ec);
}
public string Name {
}
}
+ public Type DeclaringType {
+ get {
+ return PropertyInfo.DeclaringType;
+ }
+ }
+
//
// The instance expression associated with this expression
//
{
if (!PropertyInfo.CanWrite){
Report.Error (200, loc,
- "The property `" + PropertyInfo.Name +
+ "The property '" + PropertyInfo.Name +
"' can not be assigned to, as it has not set accessor");
return false;
}
return true;
}
+ void ResolveAccessors (EmitContext ec)
+ {
+ BindingFlags flags = BindingFlags.Public | BindingFlags.Static | BindingFlags.Instance;
+ MemberInfo [] group;
+
+ group = TypeManager.MemberLookup (ec.ContainerType, PropertyInfo.DeclaringType,
+ MemberTypes.Method, flags, "get_" + PropertyInfo.Name);
+
+ //
+ // The first method is the closest to us
+ //
+ if (group != null && group.Length > 0){
+ getter = (MethodInfo) group [0];
+
+ if (getter.IsStatic)
+ is_static = true;
+ }
+
+ //
+ // The first method is the closest to us
+ //
+ group = TypeManager.MemberLookup (ec.ContainerType, PropertyInfo.DeclaringType,
+ MemberTypes.Method, flags, "set_" + PropertyInfo.Name);
+ if (group != null && group.Length > 0){
+ setter = (MethodInfo) group [0];
+ if (setter.IsStatic)
+ is_static = true;
+ }
+ }
+
override public Expression DoResolve (EmitContext ec)
{
- if (!PropertyInfo.CanRead){
- Report.Error (154, loc,
- "The property `" + PropertyInfo.Name +
+ if (getter == null){
+ Report.Error (30524, loc,
+ "The property '" + PropertyInfo.Name +
"' can not be used in " +
"this context because it lacks a get accessor");
return null;
}
+ if ((instance_expr == null) && ec.IsStatic && !is_static) {
+ SimpleName.Error_ObjectRefRequired (ec, loc, PropertyInfo.Name);
+ return null;
+ }
+
+ if (instance_expr != null) {
+ instance_expr = instance_expr.DoResolve (ec);
+ if (instance_expr == null)
+ return null;
+ }
+
return this;
}
override public Expression DoResolveLValue (EmitContext ec, Expression right_side)
{
- if (!PropertyInfo.CanWrite){
- Report.Error (154, loc,
- "The property `" + PropertyInfo.Name +
+ if (setter == null){
+ Report.Error (30526, loc,
+ "The property '" + PropertyInfo.Name +
"' can not be used in " +
"this context because it lacks a set accessor");
return null;
}
+ if (instance_expr != null) {
+ instance_expr = instance_expr.DoResolve (ec);
+ if (instance_expr == null)
+ return null;
+ }
+
return this;
}
override public void Emit (EmitContext ec)
{
- MethodInfo method = Accessors [0];
-
//
- // Special case: length of single dimension array is turned into ldlen
+ // Special case: length of single dimension array property is turned into ldlen
//
- if (method == TypeManager.int_array_get_length){
+ if ((getter == TypeManager.system_int_array_get_length) ||
+ (getter == TypeManager.int_array_get_length)){
Type iet = instance_expr.Type;
//
return;
}
}
-
- Invocation.EmitCall (ec, IsBase, IsStatic, instance_expr, method, null, loc);
-
+ Invocation.EmitCall (ec, IsBase, IsStatic, instance_expr, getter, null, PropertyArgs, loc);
}
//
{
Argument arg = new Argument (source, Argument.AType.Expression);
ArrayList args = new ArrayList ();
-
+//HERE
args.Add (arg);
- Invocation.EmitCall (ec, false, IsStatic, instance_expr, Accessors [1], args, loc);
+ Invocation.EmitCall (ec, IsBase, IsStatic, instance_expr, setter, args, PropertyArgs,loc);
}
override public void EmitStatement (EmitContext ec)
}
}
+ public Type DeclaringType {
+ get {
+ return EventInfo.DeclaringType;
+ }
+ }
+
public Expression InstanceExpression {
get {
return instance_expr;
}
}
+ Expression field_expr = null;
+
public override Expression DoResolve (EmitContext ec)
{
- // We are born fully resolved
+ if (instance_expr != null) {
+ instance_expr = instance_expr.DoResolve (ec);
+ if (instance_expr == null)
+ return null;
+ }
+
+ if (this.DeclaringType == ec.ContainerType) {
+ MemberInfo mi = GetFieldFromEvent (this);
+ if (mi == null)
+ return null;
+ field_expr = ExprClassFromMemberInfo (ec, mi, loc);
+ ((FieldExpr) field_expr).InstanceExpression = instance_expr;
+ field_expr = field_expr.DoResolve (ec);
+ if (field_expr == null)
+ return null;
+ }
+
return this;
}
public override void Emit (EmitContext ec)
{
- throw new Exception ("Should not happen I think");
+ if (field_expr != null)
+ field_expr.Emit (ec);
}
public void EmitAddOrRemove (EmitContext ec, Expression source)
ec, false, IsStatic, instance_expr, remove_accessor, args, loc);
}
}
-}
+}
projects / mono.git / blobdiff