//
#define USE_OLD
-namespace Mono.CSharp {
+namespace Mono.MonoBASIC {
using System;
using System.Collections;
- using System.Diagnostics;
using System.Reflection;
using System.Reflection.Emit;
using System.Text;
ArrayList args;
MethodInfo mi;
- StaticCallExpr (MethodInfo m, ArrayList a)
+ StaticCallExpr (MethodInfo m, ArrayList a, Location l)
{
mi = m;
args = a;
type = m.ReturnType;
eclass = ExprClass.Value;
+ loc = l;
}
public override Expression DoResolve (EmitContext ec)
if (method == null)
return null;
- return new StaticCallExpr ((MethodInfo) method, args);
+ return new StaticCallExpr ((MethodInfo) method, args, loc);
}
public override void EmitStatement (EmitContext ec)
{
Emit (ec);
- if (type != TypeManager.void_type)
+ if (TypeManager.TypeToCoreType (type) != TypeManager.void_type)
ec.ig.Emit (OpCodes.Pop);
}
}
public Operator Oper;
public Expression Expr;
- Location loc;
public Unary (Operator op, Expression expr, Location loc)
{
void Error23 (Type t)
{
- Report.Error (
- 23, loc, "Operator " + OperName (Oper) +
- " cannot be applied to operand of type `" +
- TypeManager.CSharpName (t) + "'");
+ Error (
+ 23, "Operator " + OperName (Oper) +
+ " cannot be applied to operand of type '" +
+ TypeManager.MonoBASIC_Name (t) + "'");
}
/// <remarks>
/// FIXME: a minus constant -128 sbyte cant be turned into a
/// constant byte.
/// </remarks>
- static Expression TryReduceNegative (Expression expr)
+ static Expression TryReduceNegative (Constant expr)
{
Expression e = null;
e = new IntConstant (-((UShortConstant) expr).Value);
return e;
}
-
- Expression Reduce (EmitContext ec, Expression e)
+
+ // <summary>
+ // This routine will attempt to simplify the unary expression when the
+ // argument is a constant. The result is returned in 'result' and the
+ // function returns true or false depending on whether a reduction
+ // was performed or not
+ // </summary>
+ bool Reduce (EmitContext ec, Constant e, out Expression result)
{
Type expr_type = e.Type;
switch (Oper){
case Operator.UnaryPlus:
- return e;
+ result = e;
+ return true;
case Operator.UnaryNegation:
- return TryReduceNegative (e);
+ result = TryReduceNegative (e);
+ return true;
case Operator.LogicalNot:
if (expr_type != TypeManager.bool_type) {
+ result = null;
Error23 (expr_type);
- return null;
+ return false;
}
BoolConstant b = (BoolConstant) e;
- return new BoolConstant (!(b.Value));
+ result = new BoolConstant (!(b.Value));
+ return true;
case Operator.OnesComplement:
if (!((expr_type == TypeManager.int32_type) ||
(expr_type == TypeManager.int64_type) ||
(expr_type == TypeManager.uint64_type) ||
(expr_type.IsSubclassOf (TypeManager.enum_type)))){
+ result = null;
Error23 (expr_type);
- return null;
+ return false;
}
if (e is EnumConstant){
EnumConstant enum_constant = (EnumConstant) e;
+ Expression reduced;
- Expression reduced = Reduce (ec, enum_constant.Child);
+ if (Reduce (ec, enum_constant.Child, out reduced)){
+ result = new EnumConstant ((Constant) reduced, enum_constant.Type);
+ return true;
+ } else {
+ result = null;
+ return false;
+ }
+ }
- return new EnumConstant ((Constant) reduced, enum_constant.Type);
+ if (expr_type == TypeManager.int32_type){
+ result = new IntConstant (~ ((IntConstant) e).Value);
+ } else if (expr_type == TypeManager.uint32_type){
+ result = new UIntConstant (~ ((UIntConstant) e).Value);
+ } else if (expr_type == TypeManager.int64_type){
+ result = new LongConstant (~ ((LongConstant) e).Value);
+ } else if (expr_type == TypeManager.uint64_type){
+ result = new ULongConstant (~ ((ULongConstant) e).Value);
+ } else {
+ result = null;
+ Error23 (expr_type);
+ return false;
}
+ return true;
- if (expr_type == TypeManager.int32_type)
- return new IntConstant (~ ((IntConstant) e).Value);
- if (expr_type == TypeManager.uint32_type)
- return new UIntConstant (~ ((UIntConstant) e).Value);
- if (expr_type == TypeManager.int64_type)
- return new LongConstant (~ ((LongConstant) e).Value);
- if (expr_type == TypeManager.uint64_type)
- return new ULongConstant (~ ((ULongConstant) e).Value);
+ case Operator.AddressOf:
+ result = this;
+ return false;
- Error23 (expr_type);
- return null;
+ case Operator.Indirection:
+ result = this;
+ return false;
}
- throw new Exception ("Can not constant fold");
+ throw new Exception ("Can not constant fold: " + Oper.ToString());
}
Expression ResolveOperator (EmitContext ec)
//
// Step 2: Default operations on CLI native types.
//
- if (Expr is Constant)
- return Reduce (ec, Expr);
- if (Oper == Operator.LogicalNot){
+ // Attempt to use a constant folding operation.
+ if (Expr is Constant){
+ Expression result;
+
+ if (Reduce (ec, (Constant) Expr, out result))
+ return result;
+ }
+
+ switch (Oper){
+ case Operator.LogicalNot:
if (expr_type != TypeManager.bool_type) {
Error23 (Expr.Type);
return null;
type = TypeManager.bool_type;
return this;
- }
- if (Oper == Operator.OnesComplement) {
+ case Operator.OnesComplement:
if (!((expr_type == TypeManager.int32_type) ||
(expr_type == TypeManager.uint32_type) ||
(expr_type == TypeManager.int64_type) ||
}
type = expr_type;
return this;
- }
- if (Oper == Operator.UnaryPlus) {
+ case Operator.AddressOf:
+ if (Expr.eclass != ExprClass.Variable){
+ Error (211, "Cannot take the address of non-variables");
+ return null;
+ }
+
+ if (!ec.InUnsafe) {
+ UnsafeError (loc);
+ return null;
+ }
+
+ if (!TypeManager.VerifyUnManaged (Expr.Type, loc)){
+ return null;
+ }
+
+ string ptr_type_name = Expr.Type.FullName + "*";
+ type = TypeManager.LookupType (ptr_type_name);
+
+ return this;
+
+ case Operator.Indirection:
+ if (!ec.InUnsafe){
+ UnsafeError (loc);
+ return null;
+ }
+
+ if (!expr_type.IsPointer){
+ Error (
+ 193,
+ "The * or -> operator can only be applied to pointers");
+ return null;
+ }
+
+ //
+ // We create an Indirection expression, because
+ // it can implement the IMemoryLocation.
+ //
+ return new Indirection (Expr, loc);
+
+ case Operator.UnaryPlus:
//
// A plus in front of something is just a no-op, so return the child.
//
return Expr;
- }
- //
- // Deals with -literals
- // int operator- (int x)
- // long operator- (long x)
- // float operator- (float f)
- // double operator- (double d)
- // decimal operator- (decimal d)
- //
- if (Oper == Operator.UnaryNegation){
- Expression e = null;
+ case Operator.UnaryNegation:
+ //
+ // Deals with -literals
+ // int operator- (int x)
+ // long operator- (long x)
+ // float operator- (float f)
+ // double operator- (double d)
+ // decimal operator- (decimal d)
+ //
+ Expression expr = null;
//
// transform - - expr into expr
//
if (Expr is Unary){
Unary unary = (Unary) Expr;
-
+
if (unary.Oper == Operator.UnaryNegation)
return unary.Expr;
}
if (expr_type == TypeManager.uint64_type){
//
- // FIXME: Handle exception of `long value'
+ // FIXME: Handle exception of 'long value'
// -92233720368547758087 (-2^63) to be wrote as
// decimal integer literal.
//
return this;
}
- e = ConvertImplicit (ec, Expr, TypeManager.int32_type, loc);
- if (e != null){
- Expr = e;
- type = e.Type;
+ expr = ConvertImplicit (ec, Expr, TypeManager.int32_type, loc);
+ if (expr != null){
+ Expr = expr;
+ type = expr.Type;
return this;
}
- e = ConvertImplicit (ec, Expr, TypeManager.int64_type, loc);
- if (e != null){
- Expr = e;
- type = e.Type;
+ expr = ConvertImplicit (ec, Expr, TypeManager.int64_type, loc);
+ if (expr != null){
+ Expr = expr;
+ type = expr.Type;
return this;
}
- e = ConvertImplicit (ec, Expr, TypeManager.double_type, loc);
- if (e != null){
- Expr = e;
- type = e.Type;
+ expr = ConvertImplicit (ec, Expr, TypeManager.double_type, loc);
+ if (expr != null){
+ Expr = expr;
+ type = expr.Type;
return this;
}
-
+
Error23 (expr_type);
return null;
}
- if (Oper == Operator.AddressOf){
- if (Expr.eclass != ExprClass.Variable){
- Error (211, loc, "Cannot take the address of non-variables");
- return null;
- }
-
- if (!ec.InUnsafe) {
- UnsafeError (loc);
- return null;
- }
-
- if (!TypeManager.VerifyUnManaged (Expr.Type, loc)){
- return null;
- }
-
- //
- // This construct is needed because dynamic types
- // are not known by Type.GetType, so we have to try then to use
- // ModuleBuilder.GetType.
- //
- string ptr_type_name = Expr.Type.FullName + "*";
- type = Type.GetType (ptr_type_name);
- if (type == null)
- type = CodeGen.ModuleBuilder.GetType (ptr_type_name);
-
- return this;
- }
-
- if (Oper == Operator.Indirection){
- if (!ec.InUnsafe){
- UnsafeError (loc);
- return null;
- }
-
- if (!expr_type.IsPointer){
- Report.Error (
- 193, loc,
- "The * or -> operator can only be applied to pointers");
- return null;
- }
-
- //
- // We create an Indirection expression, because
- // it can implement the IMemoryLocation.
- //
- return new Indirection (Expr);
- }
-
- Error (187, loc, "No such operator '" + OperName (Oper) + "' defined for type '" +
- TypeManager.CSharpName (expr_type) + "'");
+ Error (187, "No such operator '" + OperName (Oper) + "' defined for type '" +
+ TypeManager.MonoBASIC_Name (expr_type) + "'");
return null;
}
public override Expression DoResolve (EmitContext ec)
{
- Expr = Expr.Resolve (ec);
+ if (Oper == Operator.AddressOf)
+ Expr = Expr.ResolveLValue (ec, new EmptyExpression ());
+ else
+ Expr = Expr.Resolve (ec);
if (Expr == null)
return null;
}
/// <summary>
- /// This will emit the child expression for `ec' avoiding the logical
+ /// This will emit the child expression for 'ec' avoiding the logical
/// not. The parent will take care of changing brfalse/brtrue
/// </summary>
public void EmitLogicalNot (EmitContext ec)
LocalTemporary temporary;
bool have_temporary;
- public Indirection (Expression expr)
+ public Indirection (Expression expr, Location l)
{
this.expr = expr;
- this.type = expr.Type.GetElementType ();
+ this.type = TypeManager.TypeToCoreType (expr.Type.GetElementType ());
eclass = ExprClass.Variable;
+ loc = l;
}
void LoadExprValue (EmitContext ec)
/// classes (indexers require temporary access; overloaded require method)
///
/// Maybe we should have classes PreIncrement, PostIncrement, PreDecrement,
- /// PostDecrement, that way we could save the `Mode' byte as well.
+ /// PostDecrement, that way we could save the 'Mode' byte as well.
/// </remarks>
public class UnaryMutator : ExpressionStatement {
public enum Mode : byte {
}
Mode mode;
- Location loc;
Expression expr;
LocalTemporary temp_storage;
void Error23 (Type t)
{
- Report.Error (
- 23, loc, "Operator " + OperName (mode) +
- " cannot be applied to operand of type `" +
- TypeManager.CSharpName (t) + "'");
+ Error (
+ 23, "Operator " + OperName (mode) +
+ " cannot be applied to operand of type '" +
+ TypeManager.MonoBASIC_Name (t) + "'");
}
/// <summary>
- /// Returns whether an object of type `t' can be incremented
+ /// Returns whether an object of type 't' can be incremented
/// or decremented with add/sub (ie, basically whether we can
/// use pre-post incr-decr operations on it, but it is not a
/// System.Decimal, which we require operator overloading to catch)
return null;
} else {
- report118 (loc, expr, "variable, indexer or property access");
+ expr.Error118 ("variable, indexer or property access");
return null;
}
- Error (187, loc, "No such operator '" + OperName (mode) + "' defined for type '" +
- TypeManager.CSharpName (expr_type) + "'");
+ Error (187, "No such operator '" + OperName (mode) + "' defined for type '" +
+ TypeManager.MonoBASIC_Name (expr_type) + "'");
return null;
}
}
/// <summary>
- /// Base class for the `Is' and `As' classes.
+ /// Base class for the 'Is' and 'As' classes.
/// </summary>
///
/// <remarks>
- /// FIXME: Split this in two, and we get to save the `Operator' Oper
+ /// FIXME: Split this in two, and we get to save the 'Operator' Oper
/// size.
/// </remarks>
public abstract class Probe : Expression {
- public readonly string ProbeType;
+ public readonly Expression ProbeType;
protected Expression expr;
protected Type probe_type;
- protected Location loc;
- public Probe (Expression expr, string probe_type, Location l)
+ public Probe (Expression expr, Expression probe_type, Location l)
{
ProbeType = probe_type;
loc = l;
public override Expression DoResolve (EmitContext ec)
{
- probe_type = RootContext.LookupType (ec.DeclSpace, ProbeType, false, loc);
+ probe_type = ec.DeclSpace.ResolveType (ProbeType, false, loc);
if (probe_type == null)
return null;
}
/// <summary>
- /// Implementation of the `is' operator.
+ /// Implementation of the 'is' operator.
/// </summary>
public class Is : Probe {
- public Is (Expression expr, string probe_type, Location l)
+ public Is (Expression expr, Expression probe_type, Location l)
: base (expr, probe_type, l)
{
}
IntConstant.EmitInt (ig, 1);
return;
case Action.LeaveOnStack:
- // the `e != null' rule.
+ // the 'e != null' rule.
return;
case Action.Probe:
ig.Emit (OpCodes.Isinst, probe_type);
{
Expression e = base.DoResolve (ec);
- if (e == null)
+ if ((e == null) || (expr == null))
return null;
Type etype = expr.Type;
if (RootContext.WarningLevel >= 1){
if (warning_always_matches)
- Report.Warning (
- 183, loc,
- "The expression is always of type `" +
- TypeManager.CSharpName (probe_type) + "'");
+ Warning (
+ 183,
+ "The expression is always of type '" +
+ TypeManager.MonoBASIC_Name (probe_type) + "'");
else if (warning_never_matches){
if (!(probe_type.IsInterface || expr.Type.IsInterface))
- Report.Warning (
- 184, loc,
- "The expression is never of type `" +
- TypeManager.CSharpName (probe_type) + "'");
+ Warning (
+ 184,
+ "The expression is never of type '" +
+ TypeManager.MonoBASIC_Name (probe_type) + "'");
}
}
}
/// <summary>
- /// Implementation of the `as' operator.
+ /// Implementation of the 'as' operator.
/// </summary>
public class As : Probe {
- public As (Expression expr, string probe_type, Location l)
+ public As (Expression expr, Expression probe_type, Location l)
: base (expr, probe_type, l)
{
}
static void Error_CannotConvertType (Type source, Type target, Location loc)
{
Report.Error (
- 39, loc, "as operator can not convert from `" +
- TypeManager.CSharpName (source) + "' to `" +
- TypeManager.CSharpName (target) + "'");
+ 39, loc, "as operator can not convert from '" +
+ TypeManager.MonoBASIC_Name (source) + "' to '" +
+ TypeManager.MonoBASIC_Name (target) + "'");
}
public override Expression DoResolve (EmitContext ec)
type = probe_type;
eclass = ExprClass.Value;
Type etype = expr.Type;
+
+ if (TypeManager.IsValueType (probe_type)){
+ Report.Error (77, loc, "The as operator should be used with a reference type only (" +
+ TypeManager.MonoBASIC_Name (probe_type) + " is a value type)");
+ return null;
+
+ }
e = ConvertImplicit (ec, expr, probe_type, loc);
if (e != null){
public class Cast : Expression {
Expression target_type;
Expression expr;
- Location loc;
+ bool runtime_cast;
public Cast (Expression cast_type, Expression expr, Location loc)
{
this.target_type = cast_type;
this.expr = expr;
this.loc = loc;
+ runtime_cast = false;
}
public Expression TargetType {
}
}
+ public bool IsRuntimeCast
+ {
+ get {
+ return runtime_cast;
+ }
+ set{
+ runtime_cast = value;
+ }
+ }
+
/// <summary>
/// Attempts to do a compile-time folding of a constant cast.
/// </summary>
return new DoubleConstant ((double) v);
if (target_type == TypeManager.char_type)
return new CharConstant ((char) v);
+ if (target_type == TypeManager.decimal_type)
+ return new DecimalConstant ((decimal) v);
}
if (expr is SByteConstant){
sbyte v = ((SByteConstant) expr).Value;
return new DoubleConstant ((double) v);
if (target_type == TypeManager.char_type)
return new CharConstant ((char) v);
+ if (target_type == TypeManager.decimal_type)
+ return new DecimalConstant ((decimal) v);
}
if (expr is ShortConstant){
short v = ((ShortConstant) expr).Value;
return new DoubleConstant ((double) v);
if (target_type == TypeManager.char_type)
return new CharConstant ((char) v);
+ if (target_type == TypeManager.decimal_type)
+ return new DecimalConstant ((decimal) v);
}
if (expr is UShortConstant){
ushort v = ((UShortConstant) expr).Value;
return new DoubleConstant ((double) v);
if (target_type == TypeManager.char_type)
return new CharConstant ((char) v);
+ if (target_type == TypeManager.decimal_type)
+ return new DecimalConstant ((decimal) v);
}
if (expr is IntConstant){
int v = ((IntConstant) expr).Value;
return new DoubleConstant ((double) v);
if (target_type == TypeManager.char_type)
return new CharConstant ((char) v);
+ if (target_type == TypeManager.decimal_type)
+ return new DecimalConstant ((decimal) v);
}
if (expr is UIntConstant){
uint v = ((UIntConstant) expr).Value;
return new DoubleConstant ((double) v);
if (target_type == TypeManager.char_type)
return new CharConstant ((char) v);
+ if (target_type == TypeManager.decimal_type)
+ return new DecimalConstant ((decimal) v);
}
if (expr is LongConstant){
long v = ((LongConstant) expr).Value;
return new DoubleConstant ((double) v);
if (target_type == TypeManager.char_type)
return new CharConstant ((char) v);
+ if (target_type == TypeManager.decimal_type)
+ return new DecimalConstant ((decimal) v);
}
if (expr is ULongConstant){
ulong v = ((ULongConstant) expr).Value;
return new DoubleConstant ((double) v);
if (target_type == TypeManager.char_type)
return new CharConstant ((char) v);
+ if (target_type == TypeManager.decimal_type)
+ return new DecimalConstant ((decimal) v);
}
if (expr is FloatConstant){
float v = ((FloatConstant) expr).Value;
return new DoubleConstant ((double) v);
if (target_type == TypeManager.char_type)
return new CharConstant ((char) v);
+ if (target_type == TypeManager.decimal_type)
+ return new DecimalConstant ((decimal) v);
}
if (expr is DoubleConstant){
double v = ((DoubleConstant) expr).Value;
return new FloatConstant ((float) v);
if (target_type == TypeManager.char_type)
return new CharConstant ((char) v);
+ if (target_type == TypeManager.decimal_type)
+ return new DecimalConstant ((decimal) v);
}
return null;
if (expr == null)
return null;
- bool old_state = ec.OnlyLookupTypes;
- ec.OnlyLookupTypes = true;
- target_type = target_type.Resolve (ec);
- ec.OnlyLookupTypes = old_state;
-
- if (target_type == null){
- Report.Error (-10, loc, "Can not resolve type");
- return null;
- }
+ int errors = Report.Errors;
+
+ type = ec.DeclSpace.ResolveType (target_type, false, Location);
- if (target_type.eclass != ExprClass.Type){
- report118 (loc, target_type, "class");
- return null;
- }
-
- type = target_type.Type;
- eclass = ExprClass.Value;
-
if (type == null)
return null;
+ eclass = ExprClass.Value;
+
if (expr is Constant){
Expression e = TryReduce (ec, type);
return e;
}
- expr = ConvertExplicit (ec, expr, type, loc);
+ expr = ConvertExplicit (ec, expr, type, runtime_cast, loc);
return expr;
}
protected MethodBase method;
ArrayList Arguments;
- Location loc;
-
bool DelegateOperation;
// This must be kept in sync with Operator!!!
if (expr.Type == target_type)
return expr;
- return ConvertImplicit (ec, expr, target_type, new Location (-1));
+ return ConvertImplicit (ec, expr, target_type, Location.Null);
}
public static void Error_OperatorAmbiguous (Location loc, Operator oper, Type l, Type r)
{
Report.Error (
- 34, loc, "Operator `" + OperName (oper)
- + "' is ambiguous on operands of type `"
- + TypeManager.CSharpName (l) + "' "
- + "and `" + TypeManager.CSharpName (r)
+ 34, loc, "Operator '" + OperName (oper)
+ + "' is ambiguous on operands of type '"
+ + TypeManager.MonoBASIC_Name (l) + "' "
+ + "and '" + TypeManager.MonoBASIC_Name (r)
+ "'");
}
left = ConvertImplicit (ec, left, TypeManager.int64_type, loc);
if (r != TypeManager.int64_type)
right = ConvertImplicit (ec, right, TypeManager.int64_type, loc);
-
+
type = TypeManager.int64_type;
} else if (l == TypeManager.uint32_type || r == TypeManager.uint32_type){
//
} else if (l == TypeManager.decimal_type || r == TypeManager.decimal_type){
if (l != TypeManager.decimal_type)
left = ConvertImplicit (ec, left, TypeManager.decimal_type, loc);
+
if (r != TypeManager.decimal_type)
right = ConvertImplicit (ec, right, TypeManager.decimal_type, loc);
-
type = TypeManager.decimal_type;
} else {
- Expression l_tmp, r_tmp;
+ left = ForceConversion (ec, left, TypeManager.int32_type);
+ right = ForceConversion (ec, right, TypeManager.int32_type);
- l_tmp = ForceConversion (ec, left, TypeManager.int32_type);
- if (l_tmp == null)
- return false;
-
- r_tmp = ForceConversion (ec, right, TypeManager.int32_type);
- if (r_tmp == null)
- return false;
-
- left = l_tmp;
- right = r_tmp;
-
type = TypeManager.int32_type;
}
- return true;
+ return (left != null) && (right != null);
}
static public void Error_OperatorCannotBeApplied (Location loc, string name, Type l, Type r)
{
- Error (19, loc,
- "Operator " + name + " cannot be applied to operands of type `" +
- TypeManager.CSharpName (l) + "' and `" +
- TypeManager.CSharpName (r) + "'");
+ Report.Error (19, loc,
+ "Operator " + name + " cannot be applied to operands of type '" +
+ TypeManager.MonoBASIC_Name (l) + "' and '" +
+ TypeManager.MonoBASIC_Name (r) + "'");
}
void Error_OperatorCannotBeApplied ()
return (t == TypeManager.int32_type || t == TypeManager.uint32_type ||
t == TypeManager.int64_type || t == TypeManager.uint64_type);
}
+
+ static bool is_unsigned (Type t)
+ {
+ return (t == TypeManager.uint32_type || t == TypeManager.uint64_type ||
+ t == TypeManager.short_type || t == TypeManager.byte_type);
+ }
Expression CheckShiftArguments (EmitContext ec)
{
method = TypeManager.string_concat_object_object;
right = ConvertImplicit (ec, right,
TypeManager.object_type, loc);
+ if (right == null){
+ Error_OperatorCannotBeApplied (loc, OperName (oper), l, r);
+ return null;
+ }
}
type = TypeManager.string_type;
method = TypeManager.string_concat_object_object;
left = ConvertImplicit (ec, left, TypeManager.object_type, loc);
+ if (left == null){
+ Error_OperatorCannotBeApplied (loc, OperName (oper), l, r);
+ return null;
+ }
Arguments = new ArrayList ();
Arguments.Add (new Argument (left, Argument.AType.Expression));
Arguments.Add (new Argument (right, Argument.AType.Expression));
//
return this;
}
+
+ //
+ // One of them is a valuetype, but the other one is not.
+ //
+ if (!l.IsValueType || !r.IsValueType) {
+ Error_OperatorCannotBeApplied ();
+ return null;
+ }
}
// Only perform numeric promotions on:
method = TypeManager.delegate_combine_delegate_delegate;
else
method = TypeManager.delegate_remove_delegate_delegate;
-
+
+ if (l != r) {
+ Error_OperatorCannotBeApplied ();
+ return null;
+ }
+
DelegateOperation = true;
type = l;
return this;
if (r.IsPointer && oper == Operator.Subtraction){
if (r == l)
return new PointerArithmetic (
- false, left, right, TypeManager.int64_type);
+ false, left, right, TypeManager.int64_type,
+ loc);
} else if (is_32_or_64 (r))
return new PointerArithmetic (
- oper == Operator.Addition, left, right, l);
+ oper == Operator.Addition, left, right, l, loc);
} else if (r.IsPointer && is_32_or_64 (l) && oper == Operator.Addition)
return new PointerArithmetic (
- true, right, left, r);
+ true, right, left, r, loc);
}
//
if (lie || rie){
Expression temp;
+ // U operator - (E e, E f)
+ if (lie && rie && oper == Operator.Subtraction){
+ if (l == r){
+ type = TypeManager.EnumToUnderlying (l);
+ return this;
+ }
+ Error_OperatorCannotBeApplied ();
+ return null;
+ }
+
//
// operator + (E e, U x)
+ // operator - (E e, U x)
//
- if (oper == Operator.Addition){
- if (lie && rie){
- Error_OperatorCannotBeApplied ();
- return null;
- }
-
+ if (oper == Operator.Addition || oper == Operator.Subtraction){
Type enum_type = lie ? l : r;
Type other_type = lie ? r : l;
Type underlying_type = TypeManager.EnumToUnderlying (enum_type);
temp = ConvertImplicit (ec, right, l, loc);
if (temp != null)
right = temp;
+ else {
+ Error_OperatorCannotBeApplied ();
+ return null;
+ }
} if (!lie){
temp = ConvertImplicit (ec, left, r, loc);
if (temp != null){
left = temp;
l = r;
+ } else {
+ Error_OperatorCannotBeApplied ();
+ return null;
}
}
-
+
if (oper == Operator.Equality || oper == Operator.Inequality ||
oper == Operator.LessThanOrEqual || oper == Operator.LessThan ||
oper == Operator.GreaterThanOrEqual || oper == Operator.GreaterThan){
type = l;
return this;
}
+ Error_OperatorCannotBeApplied ();
return null;
}
return null;
}
- if (!DoNumericPromotions (ec, l, r)){
- Error_OperatorCannotBeApplied ();
+ //
+ // This will leave left or right set to null if there is an error
+ //
+ DoNumericPromotions (ec, l, r);
+ if (left == null || right == null){
+ Error_OperatorCannotBeApplied (loc, OperName (oper), l, r);
return null;
}
- if (left == null || right == null)
- return null;
-
//
// reload our cached types if required
//
return ResolveOperator (ec);
}
- public bool IsBranchable ()
+ /// <remarks>
+ /// EmitBranchable is called from Statement.EmitBoolExpression in the
+ /// context of a conditional bool expression. This function will return
+ /// false if it is was possible to use EmitBranchable, or true if it was.
+ ///
+ /// The expression's code is generated, and we will generate a branch to 'target'
+ /// if the resulting expression value is equal to isTrue
+ /// </remarks>
+ public bool EmitBranchable (EmitContext ec, Label target, bool onTrue)
{
- if (oper == Operator.Equality ||
- oper == Operator.Inequality ||
- oper == Operator.LessThan ||
- oper == Operator.GreaterThan ||
- oper == Operator.LessThanOrEqual ||
- oper == Operator.GreaterThanOrEqual){
- return true;
- } else
+ if (method != null)
return false;
- }
- /// <summary>
- /// This entry point is used by routines that might want
- /// to emit a brfalse/brtrue after an expression, and instead
- /// they could use a more compact notation.
- ///
- /// Typically the code would generate l.emit/r.emit, followed
- /// by the comparission and then a brtrue/brfalse. The comparissions
- /// are sometimes inneficient (there are not as complete as the branches
- /// look for the hacks in Emit using double ceqs).
- ///
- /// So for those cases we provide EmitBranchable that can emit the
- /// branch with the test
- /// </summary>
- public void EmitBranchable (EmitContext ec, int target)
- {
- OpCode opcode;
- bool close_target = false;
ILGenerator ig = ec.ig;
-
+
//
- // short-circuit operators
+ // This is more complicated than it looks, but its just to avoid
+ // duplicated tests: basically, we allow ==, !=, >, <, >= and <=
+ // but on top of that we want for == and != to use a special path
+ // if we are comparing against null
//
- if (oper == Operator.LogicalAnd){
- left.Emit (ec);
- ig.Emit (OpCodes.Brfalse, target);
- right.Emit (ec);
- ig.Emit (OpCodes.Brfalse, target);
- } else if (oper == Operator.LogicalOr){
- left.Emit (ec);
- ig.Emit (OpCodes.Brtrue, target);
- right.Emit (ec);
- ig.Emit (OpCodes.Brfalse, target);
- }
+ if (oper == Operator.Equality || oper == Operator.Inequality){
+ bool my_on_true = oper == Operator.Inequality ? onTrue : !onTrue;
+ if (left is NullLiteral){
+ right.Emit (ec);
+ if (my_on_true)
+ ig.Emit (OpCodes.Brtrue, target);
+ else
+ ig.Emit (OpCodes.Brfalse, target);
+ return true;
+ } else if (right is NullLiteral){
+ left.Emit (ec);
+ if (my_on_true)
+ ig.Emit (OpCodes.Brtrue, target);
+ else
+ ig.Emit (OpCodes.Brfalse, target);
+ return true;
+ }
+ } else if (!(oper == Operator.LessThan ||
+ oper == Operator.GreaterThan ||
+ oper == Operator.LessThanOrEqual ||
+ oper == Operator.GreaterThanOrEqual))
+ return false;
+
+
+
left.Emit (ec);
right.Emit (ec);
-
+
+ bool isUnsigned = is_unsigned (left.Type);
+
switch (oper){
case Operator.Equality:
- if (close_target)
- opcode = OpCodes.Beq_S;
+ if (onTrue)
+ ig.Emit (OpCodes.Beq, target);
else
- opcode = OpCodes.Beq;
+ ig.Emit (OpCodes.Bne_Un, target);
break;
case Operator.Inequality:
- if (close_target)
- opcode = OpCodes.Bne_Un_S;
+ if (onTrue)
+ ig.Emit (OpCodes.Bne_Un, target);
else
- opcode = OpCodes.Bne_Un;
+ ig.Emit (OpCodes.Beq, target);
break;
case Operator.LessThan:
- if (close_target)
- opcode = OpCodes.Blt_S;
+ if (onTrue)
+ if (isUnsigned)
+ ig.Emit (OpCodes.Blt_Un, target);
+ else
+ ig.Emit (OpCodes.Blt, target);
else
- opcode = OpCodes.Blt;
+ if (isUnsigned)
+ ig.Emit (OpCodes.Bge_Un, target);
+ else
+ ig.Emit (OpCodes.Bge, target);
break;
case Operator.GreaterThan:
- if (close_target)
- opcode = OpCodes.Bgt_S;
+ if (onTrue)
+ if (isUnsigned)
+ ig.Emit (OpCodes.Bgt_Un, target);
+ else
+ ig.Emit (OpCodes.Bgt, target);
else
- opcode = OpCodes.Bgt;
+ if (isUnsigned)
+ ig.Emit (OpCodes.Ble_Un, target);
+ else
+ ig.Emit (OpCodes.Ble, target);
break;
case Operator.LessThanOrEqual:
- if (close_target)
- opcode = OpCodes.Ble_S;
+ if (onTrue)
+ if (isUnsigned)
+ ig.Emit (OpCodes.Ble_Un, target);
+ else
+ ig.Emit (OpCodes.Ble, target);
else
- opcode = OpCodes.Ble;
+ if (isUnsigned)
+ ig.Emit (OpCodes.Bgt_Un, target);
+ else
+ ig.Emit (OpCodes.Bgt, target);
break;
+
case Operator.GreaterThanOrEqual:
- if (close_target)
- opcode = OpCodes.Bge_S;
+ if (onTrue)
+ if (isUnsigned)
+ ig.Emit (OpCodes.Bge_Un, target);
+ else
+ ig.Emit (OpCodes.Bge, target);
else
- opcode = OpCodes.Ble;
+ if (isUnsigned)
+ ig.Emit (OpCodes.Blt_Un, target);
+ else
+ ig.Emit (OpCodes.Blt, target);
break;
default:
- throw new Exception ("EmitBranchable called on non-EmitBranchable operator: "
- + oper.ToString ());
+ return false;
}
-
- ig.Emit (opcode, target);
+
+ return true;
}
public override void Emit (EmitContext ec)
bool is_add;
//
- // We assume that `l' is always a pointer
+ // We assume that 'l' is always a pointer
//
- public PointerArithmetic (bool is_addition, Expression l, Expression r, Type t)
+ public PointerArithmetic (bool is_addition, Expression l, Expression r, Type t,
+ Location loc)
{
type = t;
eclass = ExprClass.Variable;
+ this.loc = loc;
left = l;
right = r;
is_add = is_addition;
}
/// <summary>
- /// Implements the ternary conditiona operator (?:)
+ /// Implements the ternary conditional operator (?:)
/// </summary>
public class Conditional : Expression {
Expression expr, trueExpr, falseExpr;
- Location loc;
public Conditional (Expression expr, Expression trueExpr, Expression falseExpr, Location l)
{
{
expr = expr.Resolve (ec);
- if (expr.Type != TypeManager.bool_type)
+ if (expr == null)
+ return null;
+
+ if (expr.Type != TypeManager.bool_type)
expr = Expression.ConvertImplicitRequired (
ec, expr, TypeManager.bool_type, loc);
trueExpr = trueExpr.Resolve (ec);
falseExpr = falseExpr.Resolve (ec);
- if (expr == null || trueExpr == null || falseExpr == null)
+ if (trueExpr == null || falseExpr == null)
return null;
eclass = ExprClass.Value;
// Check if both can convert implicitl to each other's type
//
if (ConvertImplicit (ec, falseExpr, true_type, loc) != null){
- Report.Error (
- 172, loc,
- "Can not compute type of conditional expression " +
- "as `" + TypeManager.CSharpName (trueExpr.Type) +
- "' and `" + TypeManager.CSharpName (falseExpr.Type) +
- "' convert implicitly to each other");
+ Error (172,
+ "Can not compute type of conditional expression " +
+ "as '" + TypeManager.MonoBASIC_Name (trueExpr.Type) +
+ "' and '" + TypeManager.MonoBASIC_Name (falseExpr.Type) +
+ "' convert implicitly to each other");
return null;
}
type = false_type;
type = true_type;
falseExpr = conv;
} else {
- Error (173, loc, "The type of the conditional expression can " +
+ Error (173, "The type of the conditional expression can " +
"not be computed because there is no implicit conversion" +
- " from `" + TypeManager.CSharpName (trueExpr.Type) + "'" +
- " and `" + TypeManager.CSharpName (falseExpr.Type) + "'");
+ " from '" + TypeManager.MonoBASIC_Name (trueExpr.Type) + "'" +
+ " and '" + TypeManager.MonoBASIC_Name (falseExpr.Type) + "'");
return null;
}
}
Label false_target = ig.DefineLabel ();
Label end_target = ig.DefineLabel ();
- expr.Emit (ec);
- ig.Emit (OpCodes.Brfalse, false_target);
+ Statement.EmitBoolExpression (ec, expr, false_target, false);
trueExpr.Emit (ec);
ig.Emit (OpCodes.Br, end_target);
ig.MarkLabel (false_target);
/// <summary>
/// Local variables
/// </summary>
- public class LocalVariableReference : Expression, IAssignMethod, IMemoryLocation {
+ public class LocalVariableReference : Expression, IAssignMethod, IMemoryLocation, IVariable {
public readonly string Name;
public readonly Block Block;
- Location loc;
VariableInfo variable_info;
+ bool is_readonly;
public LocalVariableReference (Block block, string name, Location l)
{
eclass = ExprClass.Variable;
}
+ // Setting 'is_readonly' to false will allow you to create a writable
+ // reference to a read-only variable. This is used by foreach and using.
+ public LocalVariableReference (Block block, string name, Location l,
+ VariableInfo variable_info, bool is_readonly)
+ : this (block, name, l)
+ {
+ this.variable_info = variable_info;
+ this.is_readonly = is_readonly;
+ }
+
public VariableInfo VariableInfo {
get {
- if (variable_info == null)
+ if (variable_info == null) {
variable_info = Block.GetVariableInfo (Name);
+ is_readonly = variable_info.ReadOnly;
+ }
return variable_info;
}
}
+
+ public bool IsAssigned (EmitContext ec, Location loc)
+ {
+ return VariableInfo.IsAssigned (ec, loc);
+ }
+
+ public bool IsFieldAssigned (EmitContext ec, string name, Location loc)
+ {
+ return VariableInfo.IsFieldAssigned (ec, name, loc);
+ }
+
+ public void SetAssigned (EmitContext ec)
+ {
+ VariableInfo.SetAssigned (ec);
+ }
+
+ public void SetFieldAssigned (EmitContext ec, string name)
+ {
+ VariableInfo.SetFieldAssigned (ec, name);
+ }
+
+ public bool IsReadOnly {
+ get {
+ if (variable_info == null) {
+ variable_info = Block.GetVariableInfo (Name);
+ is_readonly = variable_info.ReadOnly;
+ }
+ return is_readonly;
+ }
+ }
public override Expression DoResolve (EmitContext ec)
{
return e;
}
+ if (ec.DoFlowAnalysis && !IsAssigned (ec, loc))
+ return null;
+
type = vi.VariableType;
return this;
}
override public Expression DoResolveLValue (EmitContext ec, Expression right_side)
{
+ VariableInfo vi = VariableInfo;
+
+ if (ec.DoFlowAnalysis)
+ ec.SetVariableAssigned (vi);
+
Expression e = DoResolve (ec);
if (e == null)
return null;
- VariableInfo vi = VariableInfo;
-
-#if BROKEN
- //
- // Sigh: this breaks `using' and `fixed'. Need to review that
- //
- if (vi.ReadOnly){
- Report.Error (
- 1604, loc,
- "cannot assign to `" + Name + "' because it is readonly");
+ if (is_readonly){
+ Error (1604, "cannot assign to '" + Name + "' because it is readonly");
return null;
}
-#endif
return this;
}
{
VariableInfo vi = VariableInfo;
- if ((mode & AddressOp.Load) != 0)
- vi.Used = true;
- if ((mode & AddressOp.Store) != 0)
- vi.Assigned = true;
-
ec.ig.Emit (OpCodes.Ldloca, vi.LocalBuilder);
}
}
/// This represents a reference to a parameter in the intermediate
/// representation.
/// </summary>
- public class ParameterReference : Expression, IAssignMethod, IMemoryLocation {
+ public class ParameterReference : Expression, IAssignMethod, IMemoryLocation, IVariable {
Parameters pars;
String name;
int idx;
- public bool is_ref;
+ public Parameter.Modifier mod;
+ public bool is_ref, is_out;
- public ParameterReference (Parameters pars, int idx, string name)
+ public ParameterReference (Parameters pars, int idx, string name, Location loc)
{
this.pars = pars;
this.idx = idx;
this.name = name;
+ this.loc = loc;
eclass = ExprClass.Variable;
}
+ public bool IsAssigned (EmitContext ec, Location loc)
+ {
+ if (!is_out || !ec.DoFlowAnalysis)
+ return true;
+
+ if (!ec.CurrentBranching.IsParameterAssigned (idx)) {
+ Report.Error (165, loc,
+ "Use of unassigned local variable '" + name + "'");
+ return false;
+ }
+
+ return true;
+ }
+
+ public bool IsFieldAssigned (EmitContext ec, string field_name, Location loc)
+ {
+ if (!is_out || !ec.DoFlowAnalysis)
+ return true;
+
+ if (ec.CurrentBranching.IsParameterAssigned (idx))
+ return true;
+
+ if (!ec.CurrentBranching.IsParameterAssigned (idx, field_name)) {
+ Report.Error (170, loc,
+ "Use of possibly unassigned field '" + field_name + "'");
+ return false;
+ }
+
+ return true;
+ }
+
+ public void SetAssigned (EmitContext ec)
+ {
+ if (is_out && ec.DoFlowAnalysis)
+ ec.CurrentBranching.SetParameterAssigned (idx);
+ }
+
+ public void SetFieldAssigned (EmitContext ec, string field_name)
+ {
+ if (is_out && ec.DoFlowAnalysis)
+ ec.CurrentBranching.SetParameterAssigned (idx, field_name);
+ }
+
//
// Notice that for ref/out parameters, the type exposed is not the
// same type exposed externally.
//
public override Expression DoResolve (EmitContext ec)
{
- type = pars.GetParameterInfo (ec.DeclSpace, idx, out is_ref);
+ type = pars.GetParameterInfo (ec.DeclSpace, idx, out mod);
+ is_ref = (mod & Parameter.Modifier.ISBYREF) != 0;
+ is_out = (mod & Parameter.Modifier.OUT) != 0;
eclass = ExprClass.Variable;
+ if (is_out && ec.DoFlowAnalysis && !IsAssigned (ec, loc))
+ return null;
+
return this;
}
+ override public Expression DoResolveLValue (EmitContext ec, Expression right_side)
+ {
+ type = pars.GetParameterInfo (ec.DeclSpace, idx, out mod);
+ is_ref = (mod & Parameter.Modifier.ISBYREF) != 0;
+ is_out = (mod & Parameter.Modifier.OUT) != 0;
+ eclass = ExprClass.Variable;
+
+ if (is_out && ec.DoFlowAnalysis)
+ ec.SetParameterAssigned (idx);
+
+ return this;
+ }
+
+ static void EmitLdArg (ILGenerator ig, int x)
+ {
+ if (x <= 255){
+ switch (x){
+ case 0: ig.Emit (OpCodes.Ldarg_0); break;
+ case 1: ig.Emit (OpCodes.Ldarg_1); break;
+ case 2: ig.Emit (OpCodes.Ldarg_2); break;
+ case 3: ig.Emit (OpCodes.Ldarg_3); break;
+ default: ig.Emit (OpCodes.Ldarg_S, (byte) x); break;
+ }
+ } else
+ ig.Emit (OpCodes.Ldarg, x);
+ }
+
//
// This method is used by parameters that are references, that are
// being passed as references: we only want to pass the pointer (that
if (!ec.IsStatic)
arg_idx++;
-
- if (arg_idx <= 255)
- ig.Emit (OpCodes.Ldarg_S, (byte) arg_idx);
- else
- ig.Emit (OpCodes.Ldarg, arg_idx);
+
+ EmitLdArg (ig, arg_idx);
}
public override void Emit (EmitContext ec)
if (!ec.IsStatic)
arg_idx++;
-
- if (arg_idx <= 255)
- ig.Emit (OpCodes.Ldarg_S, (byte) arg_idx);
- else
- ig.Emit (OpCodes.Ldarg, arg_idx);
+
+ EmitLdArg (ig, arg_idx);
if (!is_ref)
return;
if (!ec.IsStatic)
arg_idx++;
- if (is_ref){
- // Load the pointer
- if (arg_idx <= 255)
- ig.Emit (OpCodes.Ldarg_S, (byte) arg_idx);
- else
- ig.Emit (OpCodes.Ldarg, arg_idx);
- }
+ if (is_ref)
+ EmitLdArg (ig, arg_idx);
source.Emit (ec);
else
ig.Emit (OpCodes.Starg, arg_idx);
}
-
}
public void AddressOf (EmitContext ec, AddressOp mode)
if (!ec.IsStatic)
arg_idx++;
- if (arg_idx <= 255)
- ec.ig.Emit (OpCodes.Ldarga_S, (byte) arg_idx);
- else
- ec.ig.Emit (OpCodes.Ldarga, arg_idx);
- }
- }
-
- /// <summary>
- /// Used for arguments to New(), Invocation()
- /// </summary>
- public class Argument {
- public enum AType : byte {
- Expression,
- Ref,
- Out
- };
-
- public readonly AType ArgType;
- public Expression expr;
-
- public Argument (Expression expr, AType type)
- {
- this.expr = expr;
- this.ArgType = type;
- }
-
- public Expression Expr {
- get {
- return expr;
- }
-
- set {
- expr = value;
- }
- }
-
- public Type Type {
- get {
- if (ArgType == AType.Ref || ArgType == AType.Out)
- return TypeManager.LookupType (expr.Type.ToString () + "&");
+ if (is_ref){
+ if (arg_idx <= 255)
+ ec.ig.Emit (OpCodes.Ldarg_S, (byte) arg_idx);
else
- return expr.Type;
- }
- }
-
- public Parameter.Modifier GetParameterModifier ()
- {
- if (ArgType == AType.Ref || ArgType == AType.Out)
- return Parameter.Modifier.OUT;
-
- return Parameter.Modifier.NONE;
- }
-
- public static string FullDesc (Argument a)
- {
- return (a.ArgType == AType.Ref ? "ref " :
- (a.ArgType == AType.Out ? "out " : "")) +
- TypeManager.CSharpName (a.Expr.Type);
- }
-
- public bool Resolve (EmitContext ec, Location loc)
- {
- expr = expr.Resolve (ec);
-
- if (ArgType == AType.Expression)
- return expr != null;
-
- if (expr.eclass != ExprClass.Variable){
- //
- // We just probe to match the CSC output
- //
- if (expr.eclass == ExprClass.PropertyAccess ||
- expr.eclass == ExprClass.IndexerAccess){
- Report.Error (
- 206, loc,
- "A property or indexer can not be passed as an out or ref " +
- "parameter");
- } else {
- Report.Error (
- 1510, loc,
- "An lvalue is required as an argument to out or ref");
- }
- return false;
+ ec.ig.Emit (OpCodes.Ldarg, arg_idx);
+ } else {
+ if (arg_idx <= 255)
+ ec.ig.Emit (OpCodes.Ldarga_S, (byte) arg_idx);
+ else
+ ec.ig.Emit (OpCodes.Ldarga, arg_idx);
}
-
- return expr != null;
- }
-
- public void Emit (EmitContext ec)
- {
- //
- // Ref and Out parameters need to have their addresses taken.
- //
- // ParameterReferences might already be references, so we want
- // to pass just the value
- //
- if (ArgType == AType.Ref || ArgType == AType.Out){
- AddressOp mode = AddressOp.Store;
-
- if (ArgType == AType.Ref)
- mode |= AddressOp.Load;
-
- if (expr is ParameterReference){
- ParameterReference pr = (ParameterReference) expr;
-
- if (pr.is_ref)
- pr.EmitLoad (ec);
- else {
-
- pr.AddressOf (ec, mode);
- }
- } else
- ((IMemoryLocation)expr).AddressOf (ec, mode);
- } else
- expr.Emit (ec);
}
}
-
+
+
/// <summary>
/// Invocation of methods or delegates.
/// </summary>
public class Invocation : ExpressionStatement {
- public readonly ArrayList Arguments;
- Location loc;
+ public ArrayList Arguments;
- Expression expr;
+ public Expression expr;
MethodBase method = null;
bool is_base;
-
+ bool is_left_hand; // Needed for late bound calls
static Hashtable method_parameter_cache;
+ static MemberFilter CompareName;
static Invocation ()
{
this.expr = expr;
Arguments = arguments;
loc = l;
+ CompareName = new MemberFilter (compare_name_filter);
}
public Expression Expr {
/// <summary>
/// Returns the Parameters (a ParameterData interface) for the
- /// Method `mb'
+ /// Method 'mb'
/// </summary>
public static ParameterData GetParameterData (MethodBase mb)
{
return (ParameterData) ip;
} else {
ParameterInfo [] pi = mb.GetParameters ();
+
ReflectionParameters rp = new ReflectionParameters (pi);
method_parameter_cache [mb] = rp;
}
}
- /// <summary>
- /// Determines "better conversion" as specified in 7.4.2.3
- /// Returns : 1 if a->p is better
- /// 0 if a->q or neither is better
- /// </summary>
- static int BetterConversion (EmitContext ec, Argument a, Type p, Type q, Location loc)
- {
- Type argument_type = a.Type;
- Expression argument_expr = a.Expr;
-
- if (argument_type == null)
- throw new Exception ("Expression of type " + a.Expr + " does not resolve its type");
-
- if (p == q)
- return 0;
-
- if (argument_type == p)
- return 1;
-
- if (argument_type == q)
- return 0;
+ enum Applicability { Same, Better, Worse };
- //
- // Now probe whether an implicit constant expression conversion
- // can be used.
- //
- // An implicit constant expression conversion permits the following
- // conversions:
- //
- // * A constant-expression of type `int' can be converted to type
- // sbyte, byute, short, ushort, uint, ulong provided the value of
- // of the expression is withing the range of the destination type.
- //
- // * A constant-expression of type long can be converted to type
- // ulong, provided the value of the constant expression is not negative
- //
- // FIXME: Note that this assumes that constant folding has
- // taken place. We dont do constant folding yet.
- //
-
- if (argument_expr is IntConstant){
- IntConstant ei = (IntConstant) argument_expr;
- int value = ei.Value;
-
- if (p == TypeManager.sbyte_type){
- if (value >= SByte.MinValue && value <= SByte.MaxValue)
- return 1;
- } else if (p == TypeManager.byte_type){
- if (Byte.MinValue >= 0 && value <= Byte.MaxValue)
- return 1;
- } else if (p == TypeManager.short_type){
- if (value >= Int16.MinValue && value <= Int16.MaxValue)
- return 1;
- } else if (p == TypeManager.ushort_type){
- if (value >= UInt16.MinValue && value <= UInt16.MaxValue)
- return 1;
- } else if (p == TypeManager.uint32_type){
- //
- // we can optimize this case: a positive int32
- // always fits on a uint32
- //
- if (value >= 0)
- return 1;
- } else if (p == TypeManager.uint64_type){
- //
- // we can optimize this case: a positive int32
- // always fits on a uint64
- //
- if (value >= 0)
- return 1;
- }
- } else if (argument_type == TypeManager.int64_type && argument_expr is LongConstant){
- LongConstant lc = (LongConstant) argument_expr;
-
- if (p == TypeManager.uint64_type){
- if (lc.Value > 0)
- return 1;
- }
- }
-
- if (q == null) {
- Expression tmp = ConvertImplicit (ec, argument_expr, p, loc);
-
- if (tmp != null)
- return 1;
- else
- return 0;
- }
-
- Expression p_tmp = new EmptyExpression (p);
- Expression q_tmp = new EmptyExpression (q);
-
- if (StandardConversionExists (p_tmp, q) == true &&
- StandardConversionExists (q_tmp, p) == false)
- return 1;
-
- if (p == TypeManager.sbyte_type)
- if (q == TypeManager.byte_type || q == TypeManager.ushort_type ||
- q == TypeManager.uint32_type || q == TypeManager.uint64_type)
- return 1;
-
- if (p == TypeManager.short_type)
- if (q == TypeManager.ushort_type || q == TypeManager.uint32_type ||
- q == TypeManager.uint64_type)
- return 1;
-
- if (p == TypeManager.int32_type)
- if (q == TypeManager.uint32_type || q == TypeManager.uint64_type)
- return 1;
-
- if (p == TypeManager.int64_type)
- if (q == TypeManager.uint64_type)
- return 1;
-
- return 0;
- }
-
/// <summary>
/// Determines "Better function"
/// </summary>
/// 0 if candidate ain't better
/// 1 if candidate is better than the current best match
/// </remarks>
- static int BetterFunction (EmitContext ec, ArrayList args,
- MethodBase candidate, MethodBase best,
- bool expanded_form, Location loc)
+ static Applicability BetterFunction (EmitContext ec, ArrayList args,
+ MethodBase candidate, MethodBase best,
+ bool expanded_form, Location loc)
{
ParameterData candidate_pd = GetParameterData (candidate);
ParameterData best_pd;
int argument_count;
-
+
if (args == null)
argument_count = 0;
else
int cand_count = candidate_pd.Count;
if (cand_count == 0 && argument_count == 0)
- return 1;
+ return Applicability.Same;
if (candidate_pd.ParameterModifier (cand_count - 1) != Parameter.Modifier.PARAMS)
if (cand_count != argument_count)
- return 0;
+ return Applicability.Worse;
- if (best == null) {
- int x = 0;
-
- if (argument_count == 0 && cand_count == 1 &&
- candidate_pd.ParameterModifier (cand_count - 1) == Parameter.Modifier.PARAMS)
- return 1;
-
- for (int j = argument_count; j > 0;) {
- j--;
-
- Argument a = (Argument) args [j];
- Type t = candidate_pd.ParameterType (j);
-
- if (candidate_pd.ParameterModifier (j) == Parameter.Modifier.PARAMS)
- if (expanded_form)
- t = t.GetElementType ();
-
- x = BetterConversion (ec, a, t, null, loc);
-
- if (x <= 0)
- break;
- }
-
- if (x > 0)
- return 1;
- else
- return 0;
- }
-
best_pd = GetParameterData (best);
- int rating1 = 0, rating2 = 0;
-
+ Applicability res = Applicability.Same;
+
for (int j = 0; j < argument_count; ++j) {
int x, y;
if (expanded_form)
bt = bt.GetElementType ();
- x = BetterConversion (ec, a, ct, bt, loc);
- y = BetterConversion (ec, a, bt, ct, loc);
-
- if (x < y)
- return 0;
-
- rating1 += x;
- rating2 += y;
+ if (ct != bt) {
+ if (!WideningConversionExists (ct, bt))
+ return Applicability.Worse;
+ res = Applicability.Better;
+ }
}
- if (rating1 > rating2)
- return 1;
- else
- return 0;
+ if (res == Applicability.Same)
+ if (candidate_pd.Count < best_pd.Count)
+ res = Applicability.Better;
+ else if (candidate_pd.Count > best_pd.Count)
+ res = Applicability.Worse;
+
+ return res;
}
public static string FullMethodDesc (MethodBase mb)
string ret_type = "";
if (mb is MethodInfo)
- ret_type = TypeManager.CSharpName (((MethodInfo) mb).ReturnType);
+ ret_type = TypeManager.MonoBASIC_Name (((MethodInfo) mb).ReturnType) + " ";
- StringBuilder sb = new StringBuilder (ret_type + " " + mb.Name);
+ StringBuilder sb = new StringBuilder (ret_type + mb.Name);
ParameterData pd = GetParameterData (mb);
int count = pd.Count;
Argument a = (Argument) arguments [i];
- Parameter.Modifier a_mod = a.GetParameterModifier ();
- Parameter.Modifier p_mod = pd.ParameterModifier (i);
+ Parameter.Modifier a_mod = a.GetParameterModifier () &
+ ~(Parameter.Modifier.OUT | Parameter.Modifier.REF);
+ Parameter.Modifier p_mod = pd.ParameterModifier (i) &
+ ~(Parameter.Modifier.OUT | Parameter.Modifier.REF);
if (a_mod == p_mod) {
if (!ImplicitConversionExists (ec, a.Expr, pd.ParameterType (i)))
return false;
- if (a_mod == Parameter.Modifier.REF ||
- a_mod == Parameter.Modifier.OUT) {
+ if ((a_mod & Parameter.Modifier.ISBYREF) != 0) {
Type pt = pd.ParameterType (i);
if (!pt.IsByRef)
return true;
}
+
+ protected enum ConversionType { None, Widening, Narrowing };
+
+ static ConversionType CheckParameterAgainstArgument (EmitContext ec, ParameterData pd, int i, Argument a, Type ptype)
+ {
+ Parameter.Modifier a_mod = a.GetParameterModifier () &
+ ~(Parameter.Modifier.OUT | Parameter.Modifier.REF);
+ Parameter.Modifier p_mod = pd.ParameterModifier (i) &
+ ~(Parameter.Modifier.OUT | Parameter.Modifier.REF | Parameter.Modifier.OPTIONAL);
+
+ if (a_mod == p_mod ||
+ (a_mod == Parameter.Modifier.NONE && p_mod == Parameter.Modifier.PARAMS)) {
+ if (a_mod == Parameter.Modifier.NONE) {
+ if (! WideningConversionExists (a.Expr, ptype) ) {
+ if (! NarrowingConversionExists (ec, a.Expr, ptype) )
+ return ConversionType.None;
+ else
+ return ConversionType.Narrowing;
+ } else
+ return ConversionType.Widening;
+ }
+
+ if ((a_mod & Parameter.Modifier.ISBYREF) != 0) {
+ Type pt = pd.ParameterType (i);
+
+ if (!pt.IsByRef)
+ pt = TypeManager.LookupType (pt.FullName + "&");
+
+ if (pt != a.Type)
+ return ConversionType.None;
+ }
+ return ConversionType.Widening;
+ } else
+ return ConversionType.None;
+ }
+
+ static bool HasArrayParameter (ParameterData pd)
+ {
+ int c = pd.Count;
+ return c > 0 && (pd.ParameterModifier (c - 1) & Parameter.Modifier.PARAMS) != 0;
+ }
+
+ static int CountStandardParams (ParameterData pd)
+ {
+ int count = pd.Count;
+ for (int i = 0; i < count; i++) {
+ Parameter.Modifier pm = pd.ParameterModifier (i);
+ if ((pm & (Parameter.Modifier.OPTIONAL | Parameter.Modifier.PARAMS)) != 0)
+ return i;
+ }
+ return count;
+ }
+
/// <summary>
/// Determines if the candidate method is applicable (section 14.4.2.1)
/// to the given set of arguments
/// </summary>
- static bool IsApplicable (EmitContext ec, ArrayList arguments, MethodBase candidate)
+ static ConversionType IsApplicable (EmitContext ec, ArrayList arguments, MethodBase candidate, out bool expanded)
{
- int arg_count;
+ int arg_count, po_count;
+ Type param_type;
+ expanded = false;
+
if (arguments == null)
arg_count = 0;
else
arg_count = arguments.Count;
ParameterData pd = GetParameterData (candidate);
-
+ int ps_count = CountStandardParams (pd);
int pd_count = pd.Count;
- if (arg_count != pd.Count)
- return false;
-
- for (int i = arg_count; i > 0; ) {
- i--;
+ // Validate argument count
+ if (ps_count == pd_count) {
+ if (arg_count != pd_count)
+ return ConversionType.None;
+ }
+ else {
+ if (arg_count < ps_count)
+ return ConversionType.None;
+ if (!HasArrayParameter (pd) && arg_count > pd_count)
+ return ConversionType.None;
+ }
+ ConversionType result = ConversionType.Widening;
+ ArrayList newarglist = new ArrayList();
+ if (arg_count > 0) {
+ result = ConversionType.None;
+ int array_param_index = -1;
+ for (int i = 0; i < arg_count; ++i) {
+ Argument a = (Argument) arguments [i];
+ param_type = pd.ParameterType (i);
+ Parameter.Modifier mod = pd.ParameterModifier (i);
+ if (array_param_index < 0 && (mod & Parameter.Modifier.PARAMS) != 0)
+ array_param_index = i;
+
+ bool IsDelegate = TypeManager.IsDelegateType (param_type);
+
+ if (IsDelegate) {
+ if (a.ArgType == Argument.AType.AddressOf) {
+ a = new Argument ((Expression) a.Expr, Argument.AType.Expression);
+ ArrayList args = new ArrayList();
+ args.Add (a);
+ string param_name = pd.ParameterDesc(i).Replace('+', '.');
+ Expression pname = MonoBASIC.Parser.DecomposeQI (param_name, Location.Null);
+
+ New temp_new = new New ((Expression)pname, args, Location.Null);
+ Expression del_temp = temp_new.DoResolve(ec);
+
+ if (del_temp == null)
+ return ConversionType.None;
+
+ a = new Argument (del_temp, Argument.AType.Expression);
+ if (!a.Resolve(ec, Location.Null))
+ return ConversionType.None;
+ }
+ }
+ else {
+ if (a.ArgType == Argument.AType.AddressOf)
+ return ConversionType.None;
+ }
+ if ((mod & Parameter.Modifier.REF) != 0) {
+ a = new Argument (a.Expr, Argument.AType.Ref);
+ if (!a.Resolve(ec,Location.Null))
+ return ConversionType.None;
+ }
+
+ ConversionType match = ConversionType.None;
+ if (i == array_param_index)
+ match = CheckParameterAgainstArgument (ec, pd, i, a, param_type);
+ if (match == ConversionType.None && array_param_index >= 0 && i >= array_param_index) {
+ expanded = true;
+ param_type = param_type.GetElementType ();
+ }
+ if (match == ConversionType.None)
+ match = CheckParameterAgainstArgument (ec, pd, i, a, param_type);
+ newarglist.Add (a);
+ if (match == ConversionType.None)
+ return ConversionType.None;
+ if (result == ConversionType.None)
+ result = match;
+ else if (match == ConversionType.Narrowing)
+ result = ConversionType.Narrowing;
+ }
+ }
+
+#if false
+ // We've found a candidate, so we exchange the dummy NoArg arguments
+ // with new arguments containing the default value for that parameter
+
+ ArrayList newarglist = new ArrayList();
+ for (int i = 0; i < arg_count; i++) {
Argument a = (Argument) arguments [i];
+ Parameter p = null;
- Parameter.Modifier a_mod = a.GetParameterModifier ();
- Parameter.Modifier p_mod = pd.ParameterModifier (i);
+ if (ps != null)
+ p = (Parameter) ps.FixedParameters[i];
- if (a_mod == p_mod ||
- (a_mod == Parameter.Modifier.NONE && p_mod == Parameter.Modifier.PARAMS)) {
- if (a_mod == Parameter.Modifier.NONE)
- if (!ImplicitConversionExists (ec, a.Expr, pd.ParameterType (i)))
- return false;
-
- if (a_mod == Parameter.Modifier.REF ||
- a_mod == Parameter.Modifier.OUT) {
- Type pt = pd.ParameterType (i);
+ if (a.ArgType == Argument.AType.NoArg){
+ a = new Argument (p.ParameterInitializer, Argument.AType.Expression);
+ a.Resolve(ec, Location.Null);
+ }
- if (!pt.IsByRef)
- pt = TypeManager.LookupType (pt.FullName + "&");
+ // ToDo - This part is getting resolved second time within this function
+ // This is a costly operation
+ // The earlier resoved result should be used here.
+ // Has to be done during compiler optimization.
+ if (a.ArgType == Argument.AType.AddressOf) {
+ param_type = pd.ParameterType (i);
+ bool IsDelegate = TypeManager.IsDelegateType (param_type);
+
+ a = new Argument ((Expression) a.Expr, Argument.AType.Expression);
+ ArrayList args = new ArrayList();
+ args.Add (a);
+ string param_name = pd.ParameterDesc(i).Replace('+', '.');
+ Expression pname = MonoBASIC.Parser.DecomposeQI (param_name, Location.Null);
+
+ New temp_new = new New ((Expression)pname, args, Location.Null);
+ Expression del_temp = temp_new.DoResolve(ec);
- if (pt != a.Type)
- return false;
+ if (del_temp == null)
+ return ConversionType.None;
+
+ a = new Argument (del_temp, Argument.AType.Expression);
+ if (!a.Resolve(ec, Location.Null))
+ return ConversionType.None;
+ }
+
+ if ((p != null) && ((p.ModFlags & Parameter.Modifier.REF) != 0)) {
+ a.ArgType = Argument.AType.Ref;
+ a.Resolve(ec, Location.Null);
+ } else if ((pd.ParameterModifier (i) & Parameter.Modifier.REF) != 0) {
+ a.ArgType = Argument.AType.Ref;
+ a.Resolve(ec, Location.Null);
+ }
+ newarglist.Add(a);
+ int n = pd_count - arg_count;
+ if (n > 0) {
+ for (int x = 0; x < n; x++) {
+ Parameter op = (Parameter) ps.FixedParameters[x + arg_count];
+ Argument b = new Argument (op.ParameterInitializer, Argument.AType.Expression);
+ b.Resolve(ec, Location.Null);
+ newarglist.Add (b);
}
- } else
- return false;
+ }
}
-
- return true;
+#endif
+ return result;
}
-
+ static bool compare_name_filter (MemberInfo m, object filterCriteria)
+ {
+ return (m.Name == ((string) filterCriteria));
+ }
+
+ // We need an overload for OverloadResolve because Invocation.DoResolve
+ // must pass Arguments by reference, since a later call to IsApplicable
+ // can change the argument list if optional parameters are defined
+ // in the method declaration
+ public static MethodBase OverloadResolve (EmitContext ec, MethodGroupExpr me,
+ ArrayList Arguments, Location loc)
+ {
+ ArrayList a = Arguments;
+ return OverloadResolve (ec, me, ref a, loc);
+ }
+ static string ToString(MethodBase mbase)
+ {
+ if (mbase == null)
+ return "NULL";
+
+ if (mbase is MethodBuilder)
+ {
+ MethodBuilder mb = (MethodBuilder) mbase;
+ String res = mb.ReturnType + " (";
+ ParameterInfo [] parms = mb.GetParameters();
+ for (int i = 0; i < parms.Length; i++) {
+ if (i != 0)
+ res += " ";
+ res += parms[i].ParameterType;
+ }
+ res += ")";
+ return res;
+ }
+
+ return mbase.ToString();
+ }
+
/// <summary>
/// Find the Applicable Function Members (7.4.2.1)
///
///
/// </summary>
public static MethodBase OverloadResolve (EmitContext ec, MethodGroupExpr me,
- ArrayList Arguments, Location loc)
+ ref ArrayList Arguments, Location loc)
{
ArrayList afm = new ArrayList ();
MethodBase method = null;
+ Type current_type = null;
int argument_count;
ArrayList candidates = new ArrayList ();
-
+ Hashtable expanded_candidates = new Hashtable();
+ int narrow_count = 0;
+ bool narrowing_candidate = false;
foreach (MethodBase candidate in me.Methods){
- int x;
-
- // Check if candidate is applicable (section 14.4.2.1)
- if (!IsApplicable (ec, Arguments, candidate))
+ bool candidate_expanded;
+ ConversionType m = IsApplicable (ec, Arguments, candidate, out candidate_expanded);
+ if (candidate_expanded)
+ expanded_candidates [candidate] = candidate;
+ if (m == ConversionType.None)
continue;
-
- candidates.Add (candidate);
- x = BetterFunction (ec, Arguments, candidate, method, false, loc);
-
- if (x == 0)
- continue;
-
- method = candidate;
+ else if (m == ConversionType.Narrowing) {
+ if (method == null) {
+ method = candidate;
+ narrowing_candidate = true;
+ }
+ narrow_count++;
+ } else if (m == ConversionType.Widening) {
+ if (method == null || narrowing_candidate) {
+ method = candidate;
+ narrowing_candidate = false;
+ } else {
+ Applicability res = BetterFunction (ec, Arguments, candidate, method, true, loc);
+ if (res == Applicability.Same)
+ continue; // should check it overrides?
+ if (res == Applicability.Better)
+ method = candidate;
+ }
+ candidates.Add (candidate);
+ }
}
+ if (candidates.Count == 0) {
+ if (narrow_count > 1)
+ method = null;
+ else if (narrow_count == 1)
+ candidates = null;
+ } else if (candidates.Count == 1) {
+ method = (MethodBase)candidates [0];
+ candidates = null;
+ } else
+ narrow_count = 0;
+
if (Arguments == null)
argument_count = 0;
else
argument_count = Arguments.Count;
-
- //
- // Now we see if we can find params functions, applicable in their expanded form
- // since if they were applicable in their normal form, they would have been selected
- // above anyways
- //
- bool chose_params_expanded = false;
+
if (method == null) {
- candidates = new ArrayList ();
- foreach (MethodBase candidate in me.Methods){
- if (!IsParamsMethodApplicable (ec, Arguments, candidate))
- continue;
+ //
+ // Okay so we have failed to find anything so we
+ // return by providing info about the closest match
+ //
+ for (int i = 0; i < me.Methods.Length; ++i) {
- candidates.Add (candidate);
+ MethodBase c = (MethodBase) me.Methods [i];
+ ParameterData pd = GetParameterData (c);
- int x = BetterFunction (ec, Arguments, candidate, method, true, loc);
- if (x == 0)
+ if (pd.Count != argument_count)
continue;
- method = candidate;
- chose_params_expanded = true;
- }
- }
+ bool dummy;
+ if (narrow_count != 0) {
+ if (IsApplicable (ec, Arguments, c, out dummy) == ConversionType.None)
+ continue;
+ Report.Error (1502, loc,
+ "Overloaded match for method '" +
+ FullMethodDesc (c) +
+ "' requires narrowing conversionss");
+ }
- if (method == null)
+ VerifyArgumentsCompat (ec, Arguments, argument_count, c, false,
+ null, loc);
+ }
+
return null;
+ }
//
// Now check that there are no ambiguities i.e the selected method
// should be better than all the others
//
- foreach (MethodBase candidate in candidates){
- if (candidate == method)
- continue;
-
- //
- // If a normal method is applicable in the sense that it has the same
- // number of arguments, then the expanded params method is never applicable
- // so we debar the params method.
- //
- if (IsParamsMethodApplicable (ec, Arguments, candidate) &&
- IsApplicable (ec, Arguments, method))
- continue;
-
- int x = BetterFunction (ec, Arguments, method, candidate,
- chose_params_expanded, loc);
+ if (candidates != null) {
+ foreach (MethodBase candidate in candidates){
+ if (candidate == method)
+ continue;
- if (x != 1) {
- Report.Error (
- 121, loc,
- "Ambiguous call when selecting function due to implicit casts");
- return null;
- }
+ if (BetterFunction (ec, Arguments, candidate, method,
+ false, loc) == Applicability.Better) {
+ Report.Error (
+ 121, loc,
+ "Ambiguous call of '" + me.Name + "' when selecting function due to implicit casts");
+ return null;
+ }
+ }
}
//
// And now check if the arguments are all compatible, perform conversions
// if necessary etc. and return if everything is all right
//
+ if (method == null)
+ return null;
+ bool chose_params_expanded = expanded_candidates.Contains (method);
+
+ Arguments = ConstructArgumentList(ec, Arguments, method);
if (VerifyArgumentsCompat (ec, Arguments, argument_count, method,
chose_params_expanded, null, loc))
+ {
return method;
+ }
else
return null;
}
+ public static ArrayList ConstructArgumentList (EmitContext ec, ArrayList Arguments, MethodBase method)
+ {
+ ArrayList newarglist = new ArrayList();
+ int arg_count = Arguments == null ? 0 : Arguments.Count;
+
+ ParameterData pd = GetParameterData (method);
+
+
+ for (int i = 0; i < arg_count; i++) {
+ Argument a = (Argument) Arguments [i];
+ Type param_type = pd.ParameterType (i);
+
+ bool IsDelegate = TypeManager.IsDelegateType (param_type);
+ if (IsDelegate) {
+ if (a.ArgType == Argument.AType.AddressOf) {
+ a = new Argument ((Expression) a.Expr, Argument.AType.Expression);
+ ArrayList args = new ArrayList();
+ args.Add (a);
+ string param_name = pd.ParameterDesc(i).Replace('+', '.');
+ Expression pname = MonoBASIC.Parser.DecomposeQI (param_name, Location.Null);
+
+ New temp_new = new New ((Expression)pname, args, Location.Null);
+ Expression del_temp = temp_new.DoResolve(ec);
+ a = new Argument (del_temp, Argument.AType.Expression);
+ a.Resolve(ec, Location.Null);
+ }
+ }
+ if ((pd.ParameterModifier (i) & Parameter.Modifier.REF) != 0) {
+ a.ArgType = Argument.AType.Ref;
+ a.Resolve(ec, Location.Null);
+ }
+
+ newarglist.Add (a);
+ }
+
+ if (HasArrayParameter (pd) && arg_count == pd.Count - 1)
+ return newarglist;
+
+ for (int i = arg_count; i < pd.Count; i++) {
+ Expression e = pd.DefaultValue (i);
+ Argument a = new Argument (e, Argument.AType.Expression);
+ if ((pd.ParameterModifier (i) & Parameter.Modifier.REF) != 0)
+ a.ArgType = Argument.AType.Ref;
+ e.Resolve (ec);
+ a.Resolve (ec, Location.Null);
+ newarglist.Add (a);
+ }
+
+ return newarglist;
+ }
+
public static bool VerifyArgumentsCompat (EmitContext ec, ArrayList Arguments,
+ int argument_count,
+ MethodBase method,
+ bool chose_params_expanded,
+ Type delegate_type,
+ Location loc)
+ {
+ return (VerifyArgumentsCompat (ec, Arguments, argument_count,
+ method, chose_params_expanded, delegate_type, loc, null));
+ }
+
+ public static bool VerifyArgumentsCompat (EmitContext ec,
+ ArrayList Arguments,
int argument_count,
MethodBase method,
bool chose_params_expanded,
Type delegate_type,
- Location loc)
+ Location loc,
+ string InvokingProperty)
{
ParameterData pd = GetParameterData (method);
int pd_count = pd.Count;
-
+
for (int j = 0; j < argument_count; j++) {
Argument a = (Argument) Arguments [j];
Expression a_expr = a.Expr;
- Type parameter_type = pd.ParameterType (j);
-
+ Type parameter_type = pd.ParameterType(j);
+
+ if (parameter_type == null)
+ {
+ Error_WrongNumArguments(loc, (InvokingProperty == null)?((delegate_type == null)?FullMethodDesc (method):delegate_type.ToString ()):InvokingProperty, argument_count);
+ return false;
+ }
if (pd.ParameterModifier (j) == Parameter.Modifier.PARAMS &&
- chose_params_expanded)
- parameter_type = parameter_type.GetElementType ();
-
+ chose_params_expanded)
+ parameter_type = TypeManager.TypeToCoreType (parameter_type.GetElementType ());
if (a.Type != parameter_type){
Expression conv;
if (conv == null) {
if (!Location.IsNull (loc)) {
if (delegate_type == null)
- Error (1502, loc,
- "The best overloaded match for method '" +
- FullMethodDesc (method) +
- "' has some invalid arguments");
+ if (InvokingProperty == null)
+ Report.Error (1502, loc,
+ "The best overloaded match for method '" +
+ FullMethodDesc (method) +
+ "' has some invalid arguments");
+ else
+ Report.Error (1502, loc,
+ "Property '" +
+ InvokingProperty +
+ "' has some invalid arguments");
else
Report.Error (1594, loc,
"Delegate '" + delegate_type.ToString () +
"' has some invalid arguments.");
- Error (1503, loc,
+ Report.Error (1503, loc,
"Argument " + (j+1) +
": Cannot convert from '" + Argument.FullDesc (a)
+ "' to '" + pd.ParameterDesc (j) + "'");
if (a_expr != conv)
a.Expr = conv;
}
-
- if (a.GetParameterModifier () != pd.ParameterModifier (j) &&
+
+ Parameter.Modifier a_mod = a.GetParameterModifier () &
+ ~(Parameter.Modifier.OUT | Parameter.Modifier.REF);
+ Parameter.Modifier p_mod = pd.ParameterModifier (j) &
+ ~(Parameter.Modifier.OUT | Parameter.Modifier.REF | Parameter.Modifier.OPTIONAL);
+
+ if (a_mod != p_mod &&
pd.ParameterModifier (pd_count - 1) != Parameter.Modifier.PARAMS) {
if (!Location.IsNull (loc)) {
- Console.WriteLine ("A:P: " + a.GetParameterModifier ());
- Console.WriteLine ("PP:: " + pd.ParameterModifier (j));
- Console.WriteLine ("PT: " + parameter_type.IsByRef);
- Error (1502, loc,
+ Report.Error (1502, loc,
"The best overloaded match for method '" + FullMethodDesc (method)+
"' has some invalid arguments");
- Error (1503, loc,
+ Report.Error (1503, loc,
"Argument " + (j+1) +
": Cannot convert from '" + Argument.FullDesc (a)
+ "' to '" + pd.ParameterDesc (j) + "'");
return true;
}
-
+
+ public override Expression DoResolveLValue (EmitContext ec, Expression right_side)
+ {
+ this.is_left_hand = true;
+ Expression expr_to_return = DoResolve (ec);
+
+ if (expr_to_return is IndexerAccess) {
+ IndexerAccess ia = expr_to_return as IndexerAccess;
+ expr_to_return = ia.DoResolveLValue (ec, right_side);
+ }
+
+ return expr_to_return;
+ }
+
public override Expression DoResolve (EmitContext ec)
{
//
// First, resolve the expression that is used to
// trigger the invocation
//
+ Expression expr_to_return = null;
+
if (expr is BaseAccess)
is_base = true;
- expr = expr.Resolve (ec);
+ if ((ec.ReturnType != null) && (expr.ToString() == ec.BlockName)) {
+ ec.InvokingOwnOverload = true;
+ expr = expr.Resolve (ec, ResolveFlags.MethodGroup);
+ ec.InvokingOwnOverload = false;
+ }
+ else
+ {
+ ec.InvokingOwnOverload = false;
+ expr = expr.Resolve (ec, ResolveFlags.VariableOrValue | ResolveFlags.MethodGroup);
+ }
if (expr == null)
return null;
- if (!(expr is MethodGroupExpr)) {
+ if (expr is Invocation) {
+ // FIXME Calls which return an Array are not resolved (here or in the grammar)
+ expr = expr.Resolve(ec);
+ }
+
+ if (!(expr is MethodGroupExpr))
+ {
Type expr_type = expr.Type;
- if (expr_type != null){
+ if (expr_type != null)
+ {
bool IsDelegate = TypeManager.IsDelegateType (expr_type);
if (IsDelegate)
return (new DelegateInvocation (
}
}
- if (!(expr is MethodGroupExpr)){
- report118 (loc, this.expr, "method group");
- return null;
- }
-
//
// Next, evaluate all the expressions in the argument list
//
- if (Arguments != null){
- foreach (Argument a in Arguments){
+ if (Arguments != null)
+ {
+ foreach (Argument a in Arguments)
+ {
+ if ((a.ArgType == Argument.AType.NoArg) && (!(expr is MethodGroupExpr)))
+ Report.Error (999, "This item cannot have empty arguments");
+
if (!a.Resolve (ec, loc))
+ return null;
+ }
+ }
+
+ if (expr is MethodGroupExpr)
+ {
+ MethodGroupExpr mg = (MethodGroupExpr) expr;
+ method = OverloadResolve (ec, mg, ref Arguments, loc);
+
+ if (method == null)
+ {
+ Error (30455,
+ "Could not find any applicable function to invoke for this argument list");
+ return null;
+ }
+
+ if ((method as MethodInfo) != null)
+ {
+ MethodInfo mi = method as MethodInfo;
+ type = TypeManager.TypeToCoreType (mi.ReturnType);
+ if (!mi.IsStatic && !mg.IsExplicitImpl && (mg.InstanceExpression == null))
+ SimpleName.Error_ObjectRefRequired (ec, loc, mi.Name);
+ }
+
+ if ((method as ConstructorInfo) != null)
+ {
+ ConstructorInfo ci = method as ConstructorInfo;
+ type = TypeManager.void_type;
+ if (!ci.IsStatic && !mg.IsExplicitImpl && (mg.InstanceExpression == null))
+ SimpleName.Error_ObjectRefRequired (ec, loc, ci.Name);
+ }
+
+ if (type.IsPointer)
+ {
+ if (!ec.InUnsafe)
+ {
+ UnsafeError (loc);
return null;
+ }
}
+ eclass = ExprClass.Value;
+ expr_to_return = this;
}
- method = OverloadResolve (ec, (MethodGroupExpr) this.expr, Arguments, loc);
+ if (expr is PropertyExpr)
+ {
+ PropertyExpr pe = ((PropertyExpr) expr);
+ pe.PropertyArgs = (ArrayList) Arguments.Clone();
+ Arguments.Clear();
+ Arguments = new ArrayList();
+ MethodBase mi = pe.PropertyInfo.GetGetMethod(true);
- if (method == null){
- Error (-6, loc,
- "Could not find any applicable function for this argument list");
- return null;
+ if(VerifyArgumentsCompat (ec, pe.PropertyArgs,
+ pe.PropertyArgs.Count, mi, false, null, loc, pe.Name))
+ {
+
+ expr_to_return = pe.DoResolve (ec);
+ expr_to_return.eclass = ExprClass.PropertyAccess;
+ }
+ else
+ {
+ throw new Exception("Error resolving Property Access expression\n" + pe.ToString());
+ }
}
- if (method is MethodInfo)
- type = ((MethodInfo)method).ReturnType;
+ if (expr is FieldExpr || expr is LocalVariableReference || expr is ParameterReference) {
+ if (expr.Type.IsArray) {
+ // If we are here, expr must be an ArrayAccess
+ ArrayList idxs = new ArrayList();
+ foreach (Argument a in Arguments)
+ {
+ idxs.Add (a.Expr);
+ }
+ ElementAccess ea = new ElementAccess (expr, idxs, expr.Location);
+ ArrayAccess aa = new ArrayAccess (ea, expr.Location);
+ expr_to_return = aa.DoResolve(ec);
+ expr_to_return.eclass = ExprClass.Variable;
+ } else {
+ //
+ // check whether this is a indexer
+ //
+ ArrayList idxs = new ArrayList();
+ foreach (Argument a in Arguments) {
+ idxs.Add (a.Expr);
+ }
+ ElementAccess ea = new ElementAccess (expr, idxs, expr.Location);
+ IndexerAccess ia = new IndexerAccess (ea, expr.Location);
+ if (!is_left_hand)
+ expr_to_return = ia.DoResolve(ec);
+ else
+ expr_to_return = ia.DoResolve(ec);
+ //
+ // Since all the above are failed we need to do
+ // late binding
+ //
+ if (expr_to_return == null) {
- if (type.IsPointer){
- if (!ec.InUnsafe){
- UnsafeError (loc);
- return null;
+ // We can't resolve now, but we
+ // have to try to access the array with a call
+ // to LateIndexGet/Set in the runtime
+ Expression lig_call_expr;
+
+ if (!is_left_hand)
+ lig_call_expr = Mono.MonoBASIC.Parser.DecomposeQI("Microsoft.VisualBasic.CompilerServices.LateBinding.LateIndexGet", Location.Null);
+ else
+ lig_call_expr = Mono.MonoBASIC.Parser.DecomposeQI("Microsoft.VisualBasic.CompilerServices.LateBinding.LateIndexSet", Location.Null);
+ Expression obj_type = Mono.MonoBASIC.Parser.DecomposeQI("System.Object", Location.Null);
+ ArrayList adims = new ArrayList();
+
+ ArrayList ainit = new ArrayList();
+ foreach (Argument a in Arguments)
+ ainit.Add ((Expression) a.Expr);
+
+ adims.Add ((Expression) new IntLiteral (Arguments.Count));
+
+ Expression oace = new ArrayCreation (obj_type, adims, "", ainit, Location.Null);
+
+ ArrayList args = new ArrayList();
+ args.Add (new Argument(expr, Argument.AType.Expression));
+ args.Add (new Argument(oace, Argument.AType.Expression));
+ args.Add (new Argument(NullLiteral.Null, Argument.AType.Expression));
+
+ Expression lig_call = new Invocation (lig_call_expr, args, Location.Null);
+ expr_to_return = lig_call.Resolve(ec);
+ expr_to_return.eclass = ExprClass.Variable;
+ }
}
}
-
- eclass = ExprClass.Value;
- return this;
+
+ return expr_to_return;
}
+ static void Error_WrongNumArguments (Location loc, String name, int arg_count)
+ {
+ Report.Error (1501, loc, "No overload for method `" + name + "' takes `" +
+ arg_count + "' arguments");
+ }
+
// <summary>
// Emits the list of arguments as an array
// </summary>
ILGenerator ig = ec.ig;
int count = arguments.Count - idx;
Argument a = (Argument) arguments [idx];
- Type t = a.expr.Type;
+ Type t = a.Expr.Type;
string array_type = t.FullName + "[]";
LocalBuilder array;
- array = ig.DeclareLocal (Type.GetType (array_type));
+ array = ig.DeclareLocal (TypeManager.LookupType (array_type));
IntConstant.EmitInt (ig, count);
- ig.Emit (OpCodes.Newarr, t);
+ ig.Emit (OpCodes.Newarr, TypeManager.TypeToCoreType (t));
ig.Emit (OpCodes.Stloc, array);
int top = arguments.Count;
/// <summary>
/// Emits a list of resolved Arguments that are in the arguments
/// ArrayList.
- ///
- /// The MethodBase argument might be null if the
- /// emission of the arguments is known not to contain
- /// a `params' field (for example in constructors or other routines
- /// that keep their arguments in this structure
/// </summary>
public static void EmitArguments (EmitContext ec, MethodBase mb, ArrayList arguments)
{
- ParameterData pd;
- if (mb != null)
- pd = GetParameterData (mb);
- else
- pd = null;
+ ParameterData pd = GetParameterData (mb);
//
// If we are calling a params method with no arguments, special case it
//
if (arguments == null){
- if (pd != null && pd.Count > 0 &&
+ if (pd.Count > 0 &&
pd.ParameterModifier (0) == Parameter.Modifier.PARAMS){
ILGenerator ig = ec.ig;
IntConstant.EmitInt (ig, 0);
ig.Emit (OpCodes.Newarr, pd.ParameterType (0).GetElementType ());
}
-
return;
}
for (int i = 0; i < top; i++){
Argument a = (Argument) arguments [i];
- if (pd != null){
- if (pd.ParameterModifier (i) == Parameter.Modifier.PARAMS){
- //
- // Special case if we are passing the same data as the
- // params argument, do not put it in an array.
- //
- if (pd.ParameterType (i) == a.Type)
- a.Emit (ec);
- else
- EmitParams (ec, i, arguments);
- return;
- }
+ if (pd.ParameterModifier (i) == Parameter.Modifier.PARAMS){
+ //
+ // Special case if we are passing the same data as the
+ // params argument, do not put it in an array.
+ //
+ if (pd.ParameterType (i) == a.Type)
+ a.Emit (ec);
+ else
+ EmitParams (ec, i, arguments);
+ return;
+ }
+
+ if ((a.ArgType == Argument.AType.Ref || a.ArgType == Argument.AType.Out) &&
+ !(a.Expr is IMemoryLocation)) {
+ LocalTemporary tmp = new LocalTemporary (ec, pd.ParameterType (i));
+
+ a.Expr.Emit (ec);
+ tmp.Store (ec);
+ a = new Argument (tmp, a.ArgType);
}
a.Emit (ec);
}
+
+ if (pd.Count > top &&
+ pd.ParameterModifier (top) == Parameter.Modifier.PARAMS){
+ ILGenerator ig = ec.ig;
+
+ IntConstant.EmitInt (ig, 0);
+ ig.Emit (OpCodes.Newarr, pd.ParameterType (top).GetElementType ());
+ }
}
/// <remarks>
- /// is_base tells whether we want to force the use of the `call'
+ /// is_base tells whether we want to force the use of the 'call'
/// opcode instead of using callvirt. Call is required to call
/// a specific method, while callvirt will always use the most
/// recent method in the vtable.
/// </remarks>
public static void EmitCall (EmitContext ec, bool is_base,
bool is_static, Expression instance_expr,
- MethodBase method, ArrayList Arguments)
+ MethodBase method, ArrayList Arguments, Location loc)
+ {
+ EmitCall (ec, is_base, is_static, instance_expr, method, Arguments, null, loc);
+ }
+
+ public static void EmitCall (EmitContext ec, bool is_base,
+ bool is_static, Expression instance_expr,
+ MethodBase method, ArrayList Arguments, ArrayList prop_args, Location loc)
{
ILGenerator ig = ec.ig;
bool struct_call = false;
Type decl_type = method.DeclaringType;
-
- if (RootContext.DisableTrace && decl_type == TypeManager.trace_type)
+
+ if (!RootContext.StdLib)
+ {
+ // Replace any calls to the system's System.Array type with calls to
+ // the newly created one.
+ if (method == TypeManager.system_int_array_get_length)
+ method = TypeManager.int_array_get_length;
+ else if (method == TypeManager.system_int_array_get_rank)
+ method = TypeManager.int_array_get_rank;
+ else if (method == TypeManager.system_object_array_clone)
+ method = TypeManager.object_array_clone;
+ else if (method == TypeManager.system_int_array_get_length_int)
+ method = TypeManager.int_array_get_length_int;
+ else if (method == TypeManager.system_int_array_get_lower_bound_int)
+ method = TypeManager.int_array_get_lower_bound_int;
+ else if (method == TypeManager.system_int_array_get_upper_bound_int)
+ method = TypeManager.int_array_get_upper_bound_int;
+ else if (method == TypeManager.system_void_array_copyto_array_int)
+ method = TypeManager.void_array_copyto_array_int;
+ }
+
+ //
+ // This checks the 'ConditionalAttribute' on the method, and the
+ // ObsoleteAttribute
+ //
+ TypeManager.MethodFlags flags = TypeManager.GetMethodFlags (method, loc);
+ if ((flags & TypeManager.MethodFlags.IsObsoleteError) != 0)
return;
- if (RootContext.DisableDebug && decl_type == TypeManager.debug_type)
+ if ((flags & TypeManager.MethodFlags.ShouldIgnore) != 0)
return;
- if (!is_static){
+ if (!is_static)
+ {
if (decl_type.IsValueType)
struct_call = true;
//
// If this is ourselves, push "this"
//
- if (instance_expr == null){
+ if (instance_expr == null)
+ {
ig.Emit (OpCodes.Ldarg_0);
- } else {
+ }
+ else
+ {
//
// Push the instance expression
//
- if (instance_expr.Type.IsSubclassOf (TypeManager.value_type)){
+ if (instance_expr.Type.IsValueType)
+ {
//
// Special case: calls to a function declared in a
// reference-type with a value-type argument need
// to have their value boxed.
struct_call = true;
- if (decl_type.IsValueType){
+ if (decl_type.IsValueType)
+ {
//
// If the expression implements IMemoryLocation, then
// we can optimize and use AddressOf on the
//
// If not we have to use some temporary storage for
// it.
- if (instance_expr is IMemoryLocation){
+ if (instance_expr is IMemoryLocation)
+ {
((IMemoryLocation)instance_expr).
AddressOf (ec, AddressOp.LoadStore);
}
- else {
+ else
+ {
Type t = instance_expr.Type;
instance_expr.Emit (ec);
ig.Emit (OpCodes.Stloc, temp);
ig.Emit (OpCodes.Ldloca, temp);
}
- } else {
+ }
+ else
+ {
instance_expr.Emit (ec);
ig.Emit (OpCodes.Box, instance_expr.Type);
}
- } else
+ }
+ else
instance_expr.Emit (ec);
}
}
+
+ if (prop_args != null && prop_args.Count > 0)
+ {
+ if (Arguments == null)
+ Arguments = new ArrayList();
+
+ for (int i = prop_args.Count-1; i >=0 ; i--)
+ {
+ Arguments.Insert (0,prop_args[i]);
+ }
+
+ }
EmitArguments (ec, method, Arguments);
- if (is_static || struct_call || is_base){
- if (method is MethodInfo)
+ if (is_static || struct_call || is_base)
+ {
+ if (method is MethodInfo)
+ {
ig.Emit (OpCodes.Call, (MethodInfo) method);
+ }
else
ig.Emit (OpCodes.Call, (ConstructorInfo) method);
- } else {
+ }
+ else
+ {
if (method is MethodInfo)
ig.Emit (OpCodes.Callvirt, (MethodInfo) method);
else
}
}
+ static void EmitPropertyArgs (EmitContext ec, ArrayList prop_args)
+ {
+ int top = prop_args.Count;
+
+ for (int i = 0; i < top; i++)
+ {
+ Argument a = (Argument) prop_args [i];
+ a.Emit (ec);
+ }
+ }
+
public override void Emit (EmitContext ec)
{
MethodGroupExpr mg = (MethodGroupExpr) this.expr;
- EmitCall (ec, is_base, method.IsStatic, mg.InstanceExpression, method, Arguments);
+ EmitCall (
+ ec, is_base, method.IsStatic, mg.InstanceExpression, method, Arguments, loc);
}
public override void EmitStatement (EmitContext ec)
// Pop the return value if there is one
//
if (method is MethodInfo){
- if (((MethodInfo)method).ReturnType != TypeManager.void_type)
+ Type ret = ((MethodInfo)method).ReturnType;
+ if (TypeManager.TypeToCoreType (ret) != TypeManager.void_type)
ec.ig.Emit (OpCodes.Pop);
}
}
/// </summary>
public class New : ExpressionStatement {
public readonly ArrayList Arguments;
- public readonly string RequestedType;
+ public readonly Expression RequestedType;
- Location loc;
MethodBase method = null;
//
// we will not leave anything on the stack.
//
Expression value_target;
+ bool value_target_set = false;
+ public bool isDelegate = false;
- public New (string requested_type, ArrayList arguments, Location l)
+ public New (Expression requested_type, ArrayList arguments, Location l)
{
RequestedType = requested_type;
Arguments = arguments;
set {
value_target = value;
+ value_target_set = true;
}
}
// To enable this, look into:
// test-34 and test-89 and self bootstrapping.
//
- // For instance, we can avoid a copy by using `newobj'
+ // For instance, we can avoid a copy by using 'newobj'
// instead of Call + Push-temp on value types.
// value_target = MyEmptyExpression;
}
public override Expression DoResolve (EmitContext ec)
{
- type = RootContext.LookupType (ec.DeclSpace, RequestedType, false, loc);
+ if (this.isDelegate) {
+ // if its a delegate resolve the type of RequestedType first
+ Expression dtype = RequestedType.Resolve(ec);
+ string ts = (dtype.Type.ToString()).Replace ('+','.');
+ dtype = Mono.MonoBASIC.Parser.DecomposeQI (ts, Location.Null);
+
+ type = ec.DeclSpace.ResolveType (dtype, false, loc);
+ }
+ else
+ type = ec.DeclSpace.ResolveType (RequestedType, false, loc);
if (type == null)
return null;
return (new NewDelegate (type, Arguments, loc)).Resolve (ec);
if (type.IsInterface || type.IsAbstract){
- Report.Error (
- 144, loc, "It is not possible to create instances of interfaces " +
- "or abstract classes");
+ Error (
+ 30376, "It is not possible to create instances of Interfaces " +
+ "or classes marked as MustInherit");
return null;
}
bool is_struct = false;
- is_struct = type.IsSubclassOf (TypeManager.value_type);
+ is_struct = type.IsValueType;
eclass = ExprClass.Value;
//
Expression ml;
ml = MemberLookupFinal (ec, type, ".ctor",
MemberTypes.Constructor,
- AllBindingFlags | BindingFlags.DeclaredOnly, loc);
+ AllBindingFlags | BindingFlags.Public, loc);
if (ml == null)
return null;
if (! (ml is MethodGroupExpr)){
if (!is_struct){
- report118 (loc, ml, "method group");
+ ml.Error118 ("method group");
return null;
}
}
Arguments, loc);
}
-
- if (method == null && !is_struct) {
- Error (1501, loc,
- "New invocation: Can not find a constructor for " +
- "this argument list");
- return null;
+
+ if (method == null) {
+ if (!is_struct || Arguments.Count > 0) {
+ Error (1501,
+ "New invocation: Can not find a constructor for " +
+ "this argument list");
+ return null;
+ }
}
return this;
}
//
bool DoEmit (EmitContext ec, bool need_value_on_stack)
{
- bool is_value_type = type.IsSubclassOf (TypeManager.value_type);
+ bool is_value_type = type.IsValueType;
ILGenerator ig = ec.ig;
if (is_value_type){
IMemoryLocation ml;
- if (value_target == null)
+ // Allow DoEmit() to be called multiple times.
+ // We need to create a new LocalTemporary each time since
+ // you can't share LocalBuilders among ILGeneators.
+ if (!value_target_set)
value_target = new LocalTemporary (ec, type);
ml = (IMemoryLocation) value_target;
}
/// <summary>
- /// Represents an array creation expression.
+ /// 14.5.10.2: Represents an array creation expression.
/// </summary>
///
/// <remarks>
/// specified but where initialization data is mandatory.
/// </remarks>
public class ArrayCreation : ExpressionStatement {
- string RequestedType;
- string Rank;
- ArrayList Initializers;
- Location loc;
+ Expression requested_base_type;
+ ArrayList initializers;
//
// The list of Argument types.
- // This is used to constrcut the `newarray' or constructor signature
+ // This is used to construct the 'newarray' or constructor signature
//
- ArrayList Arguments;
+ ArrayList arguments;
- MethodBase method = null;
+ //
+ // Method used to create the array object.
+ //
+ MethodBase new_method = null;
+
Type array_element_type;
- bool IsOneDimensional = false;
- bool IsBuiltinType = false;
- bool ExpectInitializers = false;
-
- int dimensions = 0;
Type underlying_type;
+ bool is_one_dimensional = false;
+ bool is_builtin_type = false;
+ bool expect_initializers = false;
+ int num_arguments = 0;
+ int dimensions = 0;
+ string rank;
- ArrayList ArrayData;
+ ArrayList array_data;
- Hashtable Bounds;
+ Hashtable bounds;
//
// The number of array initializers that we can handle
//
int num_automatic_initializers;
- public ArrayCreation (string requested_type, ArrayList exprs,
- string rank, ArrayList initializers, Location l)
+ public ArrayCreation (Expression requested_base_type, ArrayList exprs, string rank, ArrayList initializers, Location l)
{
- RequestedType = requested_type;
- Rank = rank;
- Initializers = initializers;
+ this.requested_base_type = requested_base_type;
+ this.initializers = initializers;
+ this.rank = rank;
loc = l;
- Arguments = new ArrayList ();
+ arguments = new ArrayList ();
- foreach (Expression e in exprs)
- Arguments.Add (new Argument (e, Argument.AType.Expression));
+ foreach (Expression e in exprs) {
+ arguments.Add (new Argument (e, Argument.AType.Expression));
+ num_arguments++;
+ }
}
- public ArrayCreation (string requested_type, string rank, ArrayList initializers, Location l)
+ public ArrayCreation (Expression requested_base_type, string rank, ArrayList initializers, Location l)
{
- RequestedType = requested_type;
- Initializers = initializers;
+ this.requested_base_type = requested_base_type;
+ this.initializers = initializers;
+ this.rank = rank;
loc = l;
- Rank = rank.Substring (0, rank.LastIndexOf ("["));
-
- string tmp = rank.Substring (rank.LastIndexOf ("["));
-
- dimensions = tmp.Length - 1;
- ExpectInitializers = true;
+ //this.rank = rank.Substring (0, rank.LastIndexOf ("["));
+ //
+ //string tmp = rank.Substring (rank.LastIndexOf ("["));
+ //
+ //dimensions = tmp.Length - 1;
+ expect_initializers = true;
}
- public static string FormArrayType (string base_type, int idx_count, string rank)
+ public Expression FormArrayType (Expression base_type, int idx_count, string rank)
{
- StringBuilder sb = new StringBuilder (base_type);
-
- sb.Append (rank);
-
- sb.Append ("[");
- for (int i = 1; i < idx_count; i++)
- sb.Append (",");
-
- sb.Append ("]");
-
- return sb.ToString ();
- }
-
- public static string FormElementType (string base_type, int idx_count, string rank)
- {
- StringBuilder sb = new StringBuilder (base_type);
+ StringBuilder sb = new StringBuilder (rank);
sb.Append ("[");
for (int i = 1; i < idx_count; i++)
sb.Append (",");
sb.Append ("]");
-
- sb.Append (rank);
- string val = sb.ToString ();
-
- return val.Substring (0, val.LastIndexOf ("["));
+ return new ComposedCast (base_type, sb.ToString (), loc);
}
- void error178 ()
+ void Error_IncorrectArrayInitializer ()
{
- Report.Error (178, loc, "Incorrectly structured array initializer");
+ Error (30567, "Incorrectly structured array initializer");
}
public bool CheckIndices (EmitContext ec, ArrayList probe, int idx, bool specified_dims)
{
if (specified_dims) {
- Argument a = (Argument) Arguments [idx];
+ Argument a = (Argument) arguments [idx];
if (!a.Resolve (ec, loc))
return false;
if (!(a.Expr is Constant)) {
- Report.Error (150, loc, "A constant value is expected");
+ Error (150, "A constant value is expected");
return false;
}
int value = (int) ((Constant) a.Expr).GetValue ();
if (value != probe.Count) {
- error178 ();
+ Error_IncorrectArrayInitializer ();
return false;
}
- Bounds [idx] = value;
+ bounds [idx] = value;
}
-
+
+ int child_bounds = -1;
foreach (object o in probe) {
if (o is ArrayList) {
+ int current_bounds = ((ArrayList) o).Count;
+
+ if (child_bounds == -1)
+ child_bounds = current_bounds;
+
+ else if (child_bounds != current_bounds){
+ Error_IncorrectArrayInitializer ();
+ return false;
+ }
bool ret = CheckIndices (ec, (ArrayList) o, idx + 1, specified_dims);
if (!ret)
return false;
} else {
+ if (child_bounds != -1){
+ Error_IncorrectArrayInitializer ();
+ return false;
+ }
+
Expression tmp = (Expression) o;
tmp = tmp.Resolve (ec);
if (tmp == null)
continue;
-
+
+ // Console.WriteLine ("I got: " + tmp);
// Handle initialization from vars, fields etc.
Expression conv = ConvertImplicitRequired (
return false;
if (conv is StringConstant)
- ArrayData.Add (conv);
+ array_data.Add (conv);
else if (conv is Constant) {
- ArrayData.Add (conv);
+ array_data.Add (conv);
num_automatic_initializers++;
} else
- ArrayData.Add (conv);
+ array_data.Add (conv);
}
}
public void UpdateIndices (EmitContext ec)
{
int i = 0;
- for (ArrayList probe = Initializers; probe != null;) {
+ for (ArrayList probe = initializers; probe != null;) {
if (probe.Count > 0 && probe [0] is ArrayList) {
Expression e = new IntConstant (probe.Count);
- Arguments.Add (new Argument (e, Argument.AType.Expression));
+ arguments.Add (new Argument (e, Argument.AType.Expression));
- Bounds [i++] = probe.Count;
+ bounds [i++] = probe.Count;
probe = (ArrayList) probe [0];
} else {
Expression e = new IntConstant (probe.Count);
- Arguments.Add (new Argument (e, Argument.AType.Expression));
+ arguments.Add (new Argument (e, Argument.AType.Expression));
- Bounds [i++] = probe.Count;
+ bounds [i++] = probe.Count;
probe = null;
}
}
}
- public bool ValidateInitializers (EmitContext ec)
+ public bool ValidateInitializers (EmitContext ec, Type array_type)
{
- if (Initializers == null) {
- if (ExpectInitializers)
+ if (initializers == null) {
+ if (expect_initializers)
return false;
else
return true;
}
- underlying_type = RootContext.LookupType (
- ec.DeclSpace, RequestedType, false, loc);
+ if (underlying_type == null)
+ return false;
//
// We use this to store all the date values in the order in which we
// will need to store them in the byte blob later
//
- ArrayData = new ArrayList ();
- Bounds = new Hashtable ();
+ array_data = new ArrayList ();
+ bounds = new Hashtable ();
bool ret;
- if (Arguments != null) {
- ret = CheckIndices (ec, Initializers, 0, true);
+ if (arguments != null) {
+ ret = CheckIndices (ec, initializers, 0, true);
return ret;
-
} else {
- Arguments = new ArrayList ();
+ arguments = new ArrayList ();
- ret = CheckIndices (ec, Initializers, 0, false);
+ ret = CheckIndices (ec, initializers, 0, false);
if (!ret)
return false;
UpdateIndices (ec);
- if (Arguments.Count != dimensions) {
- error178 ();
+ if (arguments.Count != dimensions) {
+ Error_IncorrectArrayInitializer ();
return false;
}
return ret;
}
}
+
+ void Error_NegativeArrayIndex ()
+ {
+ Error (284, "Can not create array with a negative size");
+ }
+
+ //
+ // Converts 'source' to an int, uint, long or ulong.
+ //
+ Expression ExpressionToArrayArgument (EmitContext ec, Expression source)
+ {
+ Expression target;
+
+ bool old_checked = ec.CheckState;
+ ec.CheckState = true;
+
+ target = ConvertImplicit (ec, source, TypeManager.int32_type, loc);
+ if (target == null){
+ target = ConvertImplicit (ec, source, TypeManager.uint32_type, loc);
+ if (target == null){
+ target = ConvertImplicit (ec, source, TypeManager.int64_type, loc);
+ if (target == null){
+ target = ConvertImplicit (ec, source, TypeManager.uint64_type, loc);
+ if (target == null)
+ Expression.Error_CannotConvertImplicit (loc, source.Type, TypeManager.int32_type);
+ }
+ }
+ }
+ ec.CheckState = old_checked;
+
+ //
+ // Only positive constants are allowed at compile time
+ //
+ if (target is Constant){
+ if (target is IntConstant){
+ if (((IntConstant) target).Value < 0){
+ Error_NegativeArrayIndex ();
+ return null;
+ }
+ }
+
+ if (target is LongConstant){
+ if (((LongConstant) target).Value < 0){
+ Error_NegativeArrayIndex ();
+ return null;
+ }
+ }
+
+ }
+
+ return target;
+ }
+
+ //
+ // Creates the type of the array
+ //
+ bool LookupType (EmitContext ec)
+ {
+ StringBuilder array_qualifier = new StringBuilder (rank);
+
+ //
+ // 'In the first form allocates an array instace of the type that results
+ // from deleting each of the individual expression from the expression list'
+ //
+ if (num_arguments > 0) {
+ array_qualifier.Append ("[");
+ for (int i = num_arguments-1; i > 0; i--)
+ array_qualifier.Append (",");
+ array_qualifier.Append ("]");
+ }
+
+ //
+ // Lookup the type
+ //
+ Expression array_type_expr;
+ array_type_expr = new ComposedCast (requested_base_type, array_qualifier.ToString (), loc);
+ string sss = array_qualifier.ToString ();
+ type = ec.DeclSpace.ResolveType (array_type_expr, false, loc);
+
+ if (type == null)
+ return false;
+
+ underlying_type = type;
+ if (underlying_type.IsArray)
+ underlying_type = TypeManager.TypeToCoreType (underlying_type.GetElementType ());
+ dimensions = type.GetArrayRank ();
+
+ return true;
+ }
public override Expression DoResolve (EmitContext ec)
{
int arg_count;
+ if (!LookupType (ec))
+ return null;
+
//
// First step is to validate the initializers and fill
// in any missing bits
//
- if (!ValidateInitializers (ec))
+ if (!ValidateInitializers (ec, type))
return null;
- if (Arguments == null)
+ if (arguments == null)
arg_count = 0;
else {
- arg_count = Arguments.Count;
- foreach (Argument a in Arguments){
+ arg_count = arguments.Count;
+ foreach (Argument a in arguments){
if (!a.Resolve (ec, loc))
return null;
- //
- // Now, convert that to an integer
- //
- Expression real_arg;
- bool old_checked = ec.CheckState;
- ec.CheckState = true;
-
- real_arg = ConvertExplicit (
- ec, a.expr, TypeManager.uint32_type, loc);
- ec.CheckState = old_checked;
+ Expression real_arg = ExpressionToArrayArgument (ec, a.Expr, loc);
if (real_arg == null)
return null;
- a.expr = real_arg;
+ a.Expr = real_arg;
}
}
- string array_type = FormArrayType (RequestedType, arg_count, Rank);
- string element_type = FormElementType (RequestedType, arg_count, Rank);
+ array_element_type = TypeManager.TypeToCoreType (type.GetElementType ());
- type = RootContext.LookupType (ec.DeclSpace, array_type, false, loc);
-
- array_element_type = RootContext.LookupType (
- ec.DeclSpace, element_type, false, loc);
-
- if (type == null)
- return null;
-
if (arg_count == 1) {
- IsOneDimensional = true;
+ is_one_dimensional = true;
eclass = ExprClass.Value;
return this;
}
- IsBuiltinType = TypeManager.IsBuiltinType (type);
-
- if (IsBuiltinType) {
+ is_builtin_type = TypeManager.IsBuiltinType (type);
+ if (is_builtin_type) {
Expression ml;
ml = MemberLookup (ec, type, ".ctor", MemberTypes.Constructor,
AllBindingFlags, loc);
- if (!(ml is MethodGroupExpr)){
- report118 (loc, ml, "method group");
+ if (!(ml is MethodGroupExpr)) {
+ ml.Error118 ("method group");
return null;
}
if (ml == null) {
- Report.Error (-6, loc, "New invocation: Can not find a constructor for " +
+ Error (-6, "New invocation: Can not find a constructor for " +
"this argument list");
return null;
}
- method = Invocation.OverloadResolve (ec, (MethodGroupExpr) ml, Arguments, loc);
+ new_method = Invocation.OverloadResolve (ec, (MethodGroupExpr) ml, arguments, loc);
- if (method == null) {
- Report.Error (-6, loc, "New invocation: Can not find a constructor for " +
+ if (new_method == null) {
+ Error (-6, "New invocation: Can not find a constructor for " +
"this argument list");
return null;
}
eclass = ExprClass.Value;
return this;
-
} else {
-
ModuleBuilder mb = CodeGen.ModuleBuilder;
-
ArrayList args = new ArrayList ();
- if (Arguments != null){
+
+ if (arguments != null) {
for (int i = 0; i < arg_count; i++)
args.Add (TypeManager.int32_type);
}
args.CopyTo (arg_types, 0);
- method = mb.GetArrayMethod (type, ".ctor", CallingConventions.HasThis, null,
+ new_method = mb.GetArrayMethod (type, ".ctor", CallingConventions.HasThis, null,
arg_types);
- if (method == null) {
- Report.Error (-6, loc, "New invocation: Can not find a constructor for " +
+ if (new_method == null) {
+ Error (-6, "New invocation: Can not find a constructor for " +
"this argument list");
return null;
}
eclass = ExprClass.Value;
return this;
-
}
}
- public static byte [] MakeByteBlob (ArrayList ArrayData, Type underlying_type, Location loc)
+ public static byte [] MakeByteBlob (ArrayList array_data, Type underlying_type, Location loc)
{
int factor;
byte [] data;
byte [] element;
- int count = ArrayData.Count;
+ int count = array_data.Count;
+ if (underlying_type.IsEnum)
+ underlying_type = TypeManager.EnumToUnderlying (underlying_type);
+
factor = GetTypeSize (underlying_type);
if (factor == 0)
- return null;
+ throw new Exception ("unrecognized type in MakeByteBlob: " + underlying_type);
data = new byte [(count * factor + 4) & ~3];
int idx = 0;
for (int i = 0; i < count; ++i) {
- object v = ArrayData [i];
+ object v = array_data [i];
if (v is EnumConstant)
v = ((EnumConstant) v).Child;
bool val = (bool) v;
data [idx] = (byte) (val ? 1 : 0);
}
+ } else if (underlying_type == TypeManager.decimal_type){
+ if (!(v is Expression)){
+ int [] bits = Decimal.GetBits ((decimal) v);
+ int p = idx;
+
+ for (int j = 0; j < 4; j++){
+ data [p++] = (byte) (bits [j] & 0xff);
+ data [p++] = (byte) ((bits [j] >> 8) & 0xff);
+ data [p++] = (byte) ((bits [j] >> 16) & 0xff);
+ data [p++] = (byte) (bits [j] >> 24);
+ }
+ }
} else
- throw new Exception ("Unrecognized type in MakeByteBlob");
+ throw new Exception ("Unrecognized type in MakeByteBlob: " + underlying_type);
idx += factor;
}
FieldBuilder fb;
ILGenerator ig = ec.ig;
- byte [] data = MakeByteBlob (ArrayData, underlying_type, loc);
-
- if (data != null) {
- fb = RootContext.MakeStaticData (data);
+ byte [] data = MakeByteBlob (array_data, underlying_type, loc);
- if (is_expression)
- ig.Emit (OpCodes.Dup);
- ig.Emit (OpCodes.Ldtoken, fb);
- ig.Emit (OpCodes.Call,
- TypeManager.void_initializearray_array_fieldhandle);
- }
+ fb = RootContext.MakeStaticData (data);
+
+ if (is_expression)
+ ig.Emit (OpCodes.Dup);
+ ig.Emit (OpCodes.Ldtoken, fb);
+ ig.Emit (OpCodes.Call,
+ TypeManager.void_initializearray_array_fieldhandle);
}
//
void EmitDynamicInitializers (EmitContext ec, bool is_expression)
{
ILGenerator ig = ec.ig;
- int dims = Bounds.Count;
+ int dims = bounds.Count;
int [] current_pos = new int [dims];
- int top = ArrayData.Count;
+ int top = array_data.Count;
LocalBuilder temp = ig.DeclareLocal (type);
ig.Emit (OpCodes.Stloc, temp);
Expression e = null;
- if (ArrayData [i] is Expression)
- e = (Expression) ArrayData [i];
+ if (array_data [i] is Expression)
+ e = (Expression) array_data [i];
if (e != null) {
//
ig.Emit (OpCodes.Ldloc, temp);
- for (int idx = dims; idx > 0; ) {
- idx--;
+ for (int idx = 0; idx < dims; idx++)
IntConstant.EmitInt (ig, current_pos [idx]);
- }
//
// If we are dealing with a struct, get the
// address of it, so we can store it.
//
- if (etype.IsSubclassOf (TypeManager.value_type) &&
- !TypeManager.IsBuiltinType (etype)){
+ if ((dims == 1) &&
+ etype.IsSubclassOf (TypeManager.value_type) &&
+ (!TypeManager.IsBuiltinType (etype) ||
+ etype == TypeManager.decimal_type)) {
if (e is New){
New n = (New) e;
ig.Emit (OpCodes.Ldelema, etype);
}
-
+
e.Emit (ec);
if (dims == 1)
//
// Advance counter
//
- for (int j = 0; j < dims; j++){
+ for (int j = dims - 1; j >= 0; j--){
current_pos [j]++;
- if (current_pos [j] < (int) Bounds [j])
+ if (current_pos [j] < (int) bounds [j])
break;
current_pos [j] = 0;
}
void EmitArrayArguments (EmitContext ec)
{
- foreach (Argument a in Arguments)
+ ILGenerator ig = ec.ig;
+
+ foreach (Argument a in arguments) {
+ Type atype = a.Type;
a.Emit (ec);
+
+ if (atype == TypeManager.uint64_type)
+ ig.Emit (OpCodes.Conv_Ovf_U4);
+ else if (atype == TypeManager.int64_type)
+ ig.Emit (OpCodes.Conv_Ovf_I4);
+ }
}
void DoEmit (EmitContext ec, bool is_statement)
ILGenerator ig = ec.ig;
EmitArrayArguments (ec);
- if (IsOneDimensional)
+ if (is_one_dimensional)
ig.Emit (OpCodes.Newarr, array_element_type);
else {
- if (IsBuiltinType)
- ig.Emit (OpCodes.Newobj, (ConstructorInfo) method);
+ if (is_builtin_type)
+ ig.Emit (OpCodes.Newobj, (ConstructorInfo) new_method);
else
- ig.Emit (OpCodes.Newobj, (MethodInfo) method);
+ ig.Emit (OpCodes.Newobj, (MethodInfo) new_method);
}
- if (Initializers != null){
+ if (initializers != null){
//
// FIXME: Set this variable correctly.
//
}
/// <summary>
- /// Represents the `this' construct
+ /// Represents the 'this' construct
/// </summary>
- public class This : Expression, IAssignMethod, IMemoryLocation {
- Location loc;
+ public class This : Expression, IAssignMethod, IMemoryLocation, IVariable {
+
+ Block block;
+ VariableInfo vi;
+ public This (Block block, Location loc)
+ {
+ this.loc = loc;
+ this.block = block;
+ }
+
public This (Location loc)
{
this.loc = loc;
}
+ public bool IsAssigned (EmitContext ec, Location loc)
+ {
+ if (vi == null)
+ return true;
+
+ return vi.IsAssigned (ec, loc);
+ }
+
+ public bool IsFieldAssigned (EmitContext ec, string field_name, Location loc)
+ {
+ if (vi == null)
+ return true;
+
+ return vi.IsFieldAssigned (ec, field_name, loc);
+ }
+
+ public void SetAssigned (EmitContext ec)
+ {
+ if (vi != null)
+ vi.SetAssigned (ec);
+ }
+
+ public void SetFieldAssigned (EmitContext ec, string field_name)
+ {
+ if (vi != null)
+ vi.SetFieldAssigned (ec, field_name);
+ }
+
public override Expression DoResolve (EmitContext ec)
{
eclass = ExprClass.Variable;
type = ec.ContainerType;
if (ec.IsStatic){
- Report.Error (26, loc,
- "Keyword this not valid in static code");
+ Error (26, "Keyword this not valid in static code");
return null;
}
-
+
+ if (block != null)
+ vi = block.ThisVariable;
+
return this;
}
override public Expression DoResolveLValue (EmitContext ec, Expression right_side)
{
DoResolve (ec);
+
+ VariableInfo vi = ec.CurrentBlock.ThisVariable;
+ if (vi != null)
+ vi.SetAssigned (ec);
if (ec.TypeContainer is Class){
- Report.Error (1604, loc, "Cannot assign to `this'");
+ Error (1604, "Cannot assign to 'this'");
return null;
}
public override void Emit (EmitContext ec)
{
- ec.ig.Emit (OpCodes.Ldarg_0);
+ ILGenerator ig = ec.ig;
+
+ ig.Emit (OpCodes.Ldarg_0);
+ if (ec.TypeContainer is Struct)
+ ig.Emit (OpCodes.Ldobj, type);
}
public void EmitAssign (EmitContext ec, Expression source)
{
- source.Emit (ec);
- ec.ig.Emit (OpCodes.Starg, 0);
+ ILGenerator ig = ec.ig;
+
+ if (ec.TypeContainer is Struct){
+ ig.Emit (OpCodes.Ldarg_0);
+ source.Emit (ec);
+ ig.Emit (OpCodes.Stobj, type);
+ } else {
+ source.Emit (ec);
+ ig.Emit (OpCodes.Starg, 0);
+ }
}
public void AddressOf (EmitContext ec, AddressOp mode)
//
// consider: struct X { int val; int P { set { val = value; }}}
//
- // Yes, this looks very bad. Look at `NOTAS' for
+ // Yes, this looks very bad. Look at 'NOTAS' for
// an explanation.
// ec.ig.Emit (OpCodes.Ldarga_S, (byte) 0);
}
/// Implements the typeof operator
/// </summary>
public class TypeOf : Expression {
- public readonly string QueriedType;
+ public readonly Expression QueriedType;
Type typearg;
- Location loc;
- public TypeOf (string queried_type, Location l)
+ public TypeOf (Expression queried_type, Location l)
{
QueriedType = queried_type;
loc = l;
public override Expression DoResolve (EmitContext ec)
{
- typearg = RootContext.LookupType (
- ec.DeclSpace, QueriedType, false, loc);
+ typearg = ec.DeclSpace.ResolveType (QueriedType, false, loc);
if (typearg == null)
return null;
/// Implements the sizeof expression
/// </summary>
public class SizeOf : Expression {
- public readonly string QueriedType;
+ public readonly Expression QueriedType;
Type type_queried;
- Location loc;
- public SizeOf (string queried_type, Location l)
+ public SizeOf (Expression queried_type, Location l)
{
this.QueriedType = queried_type;
loc = l;
public override Expression DoResolve (EmitContext ec)
{
- type_queried = RootContext.LookupType (
- ec.DeclSpace, QueriedType, false, loc);
+ if (!ec.InUnsafe) {
+ Error (233, "Sizeof may only be used in an unsafe context " +
+ "(consider using System.Runtime.InteropServices.Marshal.SizeOf");
+ return null;
+ }
+
+ type_queried = ec.DeclSpace.ResolveType (QueriedType, false, loc);
if (type_queried == null)
return null;
+ if (!TypeManager.IsUnmanagedType (type_queried)){
+ Report.Error (208, "Cannot take the size of an unmanaged type (" + TypeManager.MonoBASIC_Name (type_queried) + ")");
+ return null;
+ }
+
type = TypeManager.int32_type;
eclass = ExprClass.Value;
return this;
/// <summary>
/// Implements the member access expression
/// </summary>
- public class MemberAccess : Expression {
+ public class MemberAccess : Expression, ITypeExpression {
public readonly string Identifier;
Expression expr;
Expression member_lookup;
- Location loc;
public MemberAccess (Expression expr, string id, Location l)
{
static void error176 (Location loc, string name)
{
- Report.Error (176, loc, "Static member `" +
+ Report.Error (176, loc, "Static member '" +
name + "' cannot be accessed " +
"with an instance reference, qualify with a " +
"type name instead");
Expression left, Location loc,
Expression left_original)
{
- //
- // Method Groups
- //
- if (member_lookup is MethodGroupExpr){
- MethodGroupExpr mg = (MethodGroupExpr) member_lookup;
-
- //
- // Type.MethodGroup
- //
- if (left is TypeExpr){
- if (!mg.RemoveInstanceMethods ()){
- SimpleName.Error120 (loc, mg.Methods [0].Name);
- return null;
- }
+ bool left_is_type, left_is_explicit;
- return member_lookup;
- }
+ // If 'left' is null, then we're called from SimpleNameResolve and this is
+ // a member in the currently defining class.
+ if (left == null) {
+ left_is_type = ec.IsStatic || ec.IsFieldInitializer;
+ left_is_explicit = false;
- //
- // Instance.MethodGroup
- //
- if (IdenticalNameAndTypeName (ec, left_original, loc)){
- if (mg.RemoveInstanceMethods ())
- return member_lookup;
- }
-
- if (!mg.RemoveStaticMethods ()){
- error176 (loc, mg.Methods [0].Name);
- return null;
- }
-
- mg.InstanceExpression = left;
- return member_lookup;
-#if ORIGINAL
- if (!mg.RemoveStaticMethods ()){
- if (IdenticalNameAndTypeName (ec, left_original, loc)){
- if (!mg.RemoveInstanceMethods ()){
- SimpleName.Error120 (loc, mg.Methods [0].Name);
- return null;
- }
- return member_lookup;
- }
-
- error176 (loc, mg.Methods [0].Name);
- return null;
- }
-
- mg.InstanceExpression = left;
-
- return member_lookup;
-#endif
+ // Implicitly default to 'this' unless we're static.
+ if (!ec.IsStatic && !ec.IsFieldInitializer && !ec.InEnumContext)
+ left = ec.This;
+ } else {
+ left_is_type = left is TypeExpr;
+ left_is_explicit = true;
}
if (member_lookup is FieldExpr){
o = fi.GetValue (fi);
if (decl_type.IsSubclassOf (TypeManager.enum_type)) {
+ if (left_is_explicit && !left_is_type &&
+ !IdenticalNameAndTypeName (ec, left_original, loc)) {
+ error176 (loc, fe.FieldInfo.Name);
+ return null;
+ }
+
Expression enum_member = MemberLookup (
ec, decl_type, "value__", MemberTypes.Field,
AllBindingFlags, loc);
Constant c;
if (en != null)
c = Constantify (o, en.UnderlyingType);
- else
+ else
c = Constantify (o, enum_member.Type);
-
+
return new EnumConstant (c, decl_type);
}
Expression exp = Constantify (o, t);
- if (!(left is TypeExpr)) {
+ if (left_is_explicit && !left_is_type) {
error176 (loc, fe.FieldInfo.Name);
return null;
}
UnsafeError (loc);
return null;
}
-
- if (left is TypeExpr){
- // and refers to a type name or an
- if (!fe.FieldInfo.IsStatic){
- error176 (loc, fe.FieldInfo.Name);
- return null;
- }
- return member_lookup;
- } else {
- if (fe.FieldInfo.IsStatic){
- if (IdenticalNameAndTypeName (ec, left_original, loc))
- return member_lookup;
-
- error176 (loc, fe.FieldInfo.Name);
- return null;
- }
- fe.InstanceExpression = left;
-
- return fe;
- }
- }
-
- if (member_lookup is PropertyExpr){
- PropertyExpr pe = (PropertyExpr) member_lookup;
-
- if (left is TypeExpr){
- if (!pe.IsStatic){
- SimpleName.Error120 (loc, pe.PropertyInfo.Name);
- return null;
- }
- return pe;
- } else {
- if (pe.IsStatic){
- if (IdenticalNameAndTypeName (ec, left_original, loc))
- return member_lookup;
- error176 (loc, pe.PropertyInfo.Name);
- return null;
- }
- pe.InstanceExpression = left;
-
- return pe;
- }
}
- if (member_lookup is EventExpr) {
-
- EventExpr ee = (EventExpr) member_lookup;
-
- //
- // If the event is local to this class, we transform ourselves into
- // a FieldExpr
- //
+
+ if (member_lookup is IMemberExpr) {
+ IMemberExpr me = (IMemberExpr) member_lookup;
- Expression ml = MemberLookup (
- ec, ec.ContainerType,
- ee.EventInfo.Name, MemberTypes.Event, AllBindingFlags, loc);
+ if (left_is_type){
+ MethodGroupExpr mg = me as MethodGroupExpr;
+ if ((mg != null) && left_is_explicit && left.Type.IsInterface)
+ mg.IsExplicitImpl = left_is_explicit;
- if (ml != null) {
- MemberInfo mi = ec.TypeContainer.GetFieldFromEvent ((EventExpr) ml);
+ if (!me.IsStatic){
+ if (IdenticalNameAndTypeName (ec, left_original, loc))
+ return member_lookup;
- 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, loc);
+ SimpleName.Error_ObjectRefRequired (ec, loc, me.Name);
return null;
}
- ml = ExprClassFromMemberInfo (ec, mi, loc);
-
- if (ml == null) {
- Report.Error (-200, loc, "Internal error!!");
- return null;
- }
- return ResolveMemberAccess (ec, ml, left, loc, left_original);
- }
+ } else {
+ if (!me.IsInstance){
+ if (IdenticalNameAndTypeName (ec, left_original, loc))
+ return member_lookup;
- if (left is TypeExpr) {
- if (!ee.IsStatic) {
- SimpleName.Error120 (loc, ee.EventInfo.Name);
- return null;
+ /*if (left_is_explicit) {
+ error176 (loc, me.Name);
+ return null;
+ }*/
}
- return ee;
+ //
+ // Since we can not check for instance objects in SimpleName,
+ // becaue of the rule that allows types and variables to share
+ // the name (as long as they can be de-ambiguated later, see
+ // IdenticalNameAndTypeName), we have to check whether left
+ // is an instance variable in a static context
+ //
+ // However, if the left-hand value is explicitly given, then
+ // it is already our instance expression, so we aren't in
+ // static context.
+ //
- } else {
- if (ee.IsStatic) {
- if (IdenticalNameAndTypeName (ec, left_original, loc))
- return ee;
-
- error176 (loc, ee.EventInfo.Name);
- return null;
- }
+ if (ec.IsStatic && !left_is_explicit && left is IMemberExpr){
+ IMemberExpr mexp = (IMemberExpr) left;
- ee.InstanceExpression = left;
+ if (!mexp.IsStatic){
+ SimpleName.Error_ObjectRefRequired (ec, loc, mexp.Name);
+ return null;
+ }
+ }
- return ee;
+ me.InstanceExpression = left;
}
+
+ return member_lookup;
}
if (member_lookup is TypeExpr){
- member_lookup.Resolve (ec);
+ member_lookup.Resolve (ec, ResolveFlags.Type);
return member_lookup;
}
return null;
}
- public override Expression DoResolve (EmitContext ec)
+ public Expression DoResolve (EmitContext ec, Expression right_side, ResolveFlags flags)
{
+ if (type != null)
+ throw new Exception ();
//
- // We are the sole users of ResolveWithSimpleName (ie, the only
- // ones that can cope with it
+ // Resolve the expression with flow analysis turned off, we'll do the definite
+ // assignment checks later. This is because we don't know yet what the expression
+ // will resolve to - it may resolve to a FieldExpr and in this case we must do the
+ // definite assignment check on the actual field and not on the whole struct.
//
- Expression original = expr;
- expr = expr.ResolveWithSimpleName (ec);
+ Expression original = expr;
+ expr = expr.Resolve (ec, flags | ResolveFlags.DisableFlowAnalysis);
+
if (expr == null)
return null;
if (expr is SimpleName){
SimpleName child_expr = (SimpleName) expr;
-
- expr = new SimpleName (child_expr.Name + "." + Identifier, loc);
- return expr.ResolveWithSimpleName (ec);
+ Expression new_expr = new SimpleName (child_expr.Name + "." + Identifier, loc);
+
+ if ((flags & ResolveFlags.MaskExprClass) == ResolveFlags.Type)
+ return new_expr.Resolve (ec, flags);
+ else
+ return new_expr.Resolve (ec, flags | ResolveFlags.MethodGroup | ResolveFlags.VariableOrValue);
}
- //
- // TODO: I mailed Ravi about this, and apparently we can get rid
- // of this and put it in the right place.
- //
- // Handle enums here when they are in transit.
- // Note that we cannot afford to hit MemberLookup in this case because
- // it will fail to find any members at all
- //
-
+ int errors = Report.Errors;
+
Type expr_type = expr.Type;
- if ((expr is TypeExpr) && (expr_type.IsSubclassOf (TypeManager.enum_type))){
-
- Enum en = TypeManager.LookupEnum (expr_type);
-
- if (en != null) {
- object value = en.LookupEnumValue (ec, Identifier, loc);
- if (value != null){
- Constant c = Constantify (value, en.UnderlyingType);
- return new EnumConstant (c, expr_type);
+ if (expr is TypeExpr){
+ //FIXME: add access level check
+ //if (!ec.DeclSpace.CheckAccessLevel (expr_type)) {
+ // Error (30390, "'" + TypeManager.MonoBASIC_Name (expr_type) + "' " +
+ // "is inaccessible because of its protection level");
+ // return null;
+ //}
+
+ if (expr_type == TypeManager.enum_type || expr_type.IsSubclassOf (TypeManager.enum_type)){
+ Enum en = TypeManager.LookupEnum (expr_type);
+
+ if (en != null) {
+ object value = en.LookupEnumValue (Identifier);
+
+ if (value != null){
+ Constant c = Constantify (value, en.UnderlyingType);
+ return new EnumConstant (c, expr_type);
+ } else {
+ Report.Error (30456, loc,
+ Identifier + " is not found in member list of enum " + en.Name);
+ }
}
}
}
-
+
if (expr_type.IsPointer){
- Report.Error (23, loc,
- "The `.' operator can not be applied to pointer operands (" +
- TypeManager.CSharpName (expr_type) + ")");
+ Error (23, "The '.' operator can not be applied to pointer operands (" +
+ TypeManager.MonoBASIC_Name (expr_type) + ")");
return null;
}
-
+
member_lookup = MemberLookup (ec, expr_type, Identifier, loc);
- if (member_lookup == null){
+ if (member_lookup == null)
+ {
+ // Error has already been reported.
+ if (errors < Report.Errors)
+ return null;
+
//
// Try looking the member up from the same type, if we find
// it, we know that the error was due to limited visibility
//
object lookup = TypeManager.MemberLookup (
- expr_type, expr_type, AllMemberTypes, AllBindingFlags, Identifier);
+ expr_type, expr_type, AllMemberTypes, AllBindingFlags |
+ BindingFlags.NonPublic, Identifier);
+
if (lookup == null)
- Report.Error (117, loc, "`" + expr_type + "' does not contain a " +
- "definition for `" + Identifier + "'");
+ Error (30456, "'" + expr_type + "' does not contain a definition for '" + Identifier + "'");
else
- Report.Error (122, loc, "`" + expr_type + "." + Identifier + "' " +
- "is inaccessible because of its protection level");
-
+ {
+ if ((expr_type != ec.ContainerType) &&
+ ec.ContainerType.IsSubclassOf (expr_type))
+ {
+
+ // Although a derived class can access protected members of
+ // its base class it cannot do so through an instance of the
+ // base class (CS1540). If the expr_type is a parent of the
+ // ec.ContainerType and the lookup succeeds with the latter one,
+ // then we are in this situation.
+
+ lookup = TypeManager.MemberLookup(
+ ec.ContainerType, ec.ContainerType, AllMemberTypes,
+ AllBindingFlags, Identifier);
+
+ if (lookup != null)
+ Error (1540, "Cannot access protected member '" +
+ expr_type + "." + Identifier + "' " +
+ "via a qualifier of type '" + TypeManager.MonoBASIC_Name (expr_type) + "'; the " +
+ "qualifier must be of type '" + TypeManager.MonoBASIC_Name (ec.ContainerType) + "' " +
+ "(or derived from it)");
+ else
+ Error (30390, "'" + expr_type + "." + Identifier + "' " +
+ "is inaccessible because of its protection level");
+ } else
+ Error (30390, "'" + expr_type + "." + Identifier + "' " +
+ "is inaccessible because of its protection level");
+ }
return null;
}
- return ResolveMemberAccess (ec, member_lookup, expr, loc, original);
+ if ((expr is TypeExpr) && (expr_type.IsSubclassOf (TypeManager.enum_type))) {
+ Enum en = TypeManager.LookupEnum (expr_type);
+
+ if (en != null) {
+ object value = en.LookupEnumValue (Identifier);
+ expr_type = TypeManager.int32_type;
+ if (value != null) {
+ Constant c = Constantify (value, en.UnderlyingType);
+ return new EnumConstant (c, en.UnderlyingType);
+ } else {
+ Report.Error (30456, loc,
+ Identifier + " is not found in member list of enum " + en.Name);
+ }
+ }
+ }
+
+ if (member_lookup is TypeExpr){
+ member_lookup.Resolve (ec, ResolveFlags.Type);
+
+ return member_lookup;
+ } else if ((flags & ResolveFlags.MaskExprClass) == ResolveFlags.Type)
+ return null;
+
+ member_lookup = ResolveMemberAccess (ec, member_lookup, expr, loc, original);
+ if (member_lookup == null)
+ return null;
+
+ // The following DoResolve/DoResolveLValue will do the definite assignment
+ // check.
+ if (right_side != null)
+ member_lookup = member_lookup.DoResolveLValue (ec, right_side);
+ else
+ member_lookup = member_lookup.DoResolve (ec);
+
+ return member_lookup;
+ }
+
+ public override Expression DoResolve (EmitContext ec)
+ {
+ return DoResolve (ec, null, ResolveFlags.VariableOrValue |
+ ResolveFlags.SimpleName | ResolveFlags.Type);
+ }
+
+ public override Expression DoResolveLValue (EmitContext ec, Expression right_side)
+ {
+ return DoResolve (ec, right_side, ResolveFlags.VariableOrValue |
+ ResolveFlags.SimpleName | ResolveFlags.Type);
+ }
+
+ public Expression DoResolveType (EmitContext ec)
+ {
+ return DoResolve (ec, null, ResolveFlags.Type);
}
public override void Emit (EmitContext ec)
{
throw new Exception ("Should not happen");
}
+
+ public override string ToString ()
+ {
+ return expr + "." + Identifier;
+ }
}
+
+
/// <summary>
/// Implements checked expressions
/// </summary>
public Expression Expr;
- public CheckedExpr (Expression e)
+ public CheckedExpr (Expression e, Location l)
{
Expr = e;
+ loc = l;
}
public override Expression DoResolve (EmitContext ec)
if (Expr == null)
return null;
+ if (Expr is Constant)
+ return Expr;
+
eclass = Expr.eclass;
type = Expr.Type;
return this;
public Expression Expr;
- public UnCheckedExpr (Expression e)
+ public UnCheckedExpr (Expression e, Location l)
{
Expr = e;
+ loc = l;
}
public override Expression DoResolve (EmitContext ec)
if (Expr == null)
return null;
+ if (Expr is Constant)
+ return Expr;
+
eclass = Expr.eclass;
type = Expr.Type;
return this;
public class ElementAccess : Expression {
public ArrayList Arguments;
public Expression Expr;
- public Location loc;
public ElementAccess (Expression e, ArrayList e_list, Location l)
{
Type t = Expr.Type;
if (t == TypeManager.void_ptr_type){
- Report.Error (
- 242, loc,
+ Error (
+ 242,
"The array index operation is not valid for void pointers");
return null;
}
if (Arguments.Count != 1){
- Report.Error (
- 196, loc,
+ Error (
+ 196,
"A pointer must be indexed by a single value");
return null;
}
- Expression p = new PointerArithmetic (true, Expr, ((Argument)Arguments [0]).Expr, t);
- return new Indirection (p);
+ Expression p = new PointerArithmetic (true, Expr, ((Argument)Arguments [0]).Expr,
+ t, loc);
+ return new Indirection (p, loc);
}
public override Expression DoResolve (EmitContext ec)
//
Type t = Expr.Type;
- if (t.IsSubclassOf (TypeManager.array_type))
- return (new ArrayAccess (this)).Resolve (ec);
+ if (t.IsArray)
+ return (new ArrayAccess (this, loc)).Resolve (ec);
else if (t.IsPointer)
return MakePointerAccess ();
else
- return (new IndexerAccess (this)).Resolve (ec);
+ return (new IndexerAccess (this, loc)).Resolve (ec);
}
public override Expression DoResolveLValue (EmitContext ec, Expression right_side)
return null;
Type t = Expr.Type;
- if (t.IsSubclassOf (TypeManager.array_type))
- return (new ArrayAccess (this)).ResolveLValue (ec, right_side);
+ if (t.IsArray)
+ return (new ArrayAccess (this, loc)).ResolveLValue (ec, right_side);
else if (t.IsPointer)
return MakePointerAccess ();
else
- return (new IndexerAccess (this)).ResolveLValue (ec, right_side);
+ return (new IndexerAccess (this, loc)).ResolveLValue (ec, right_side);
}
public override void Emit (EmitContext ec)
ElementAccess ea;
LocalTemporary [] cached_locations;
-
- public ArrayAccess (ElementAccess ea_data)
+
+ public ArrayAccess (ElementAccess ea_data, Location l)
{
ea = ea_data;
eclass = ExprClass.Variable;
+ loc = l;
}
public override Expression DoResolve (EmitContext ec)
// As long as the type is valid
if (!(eclass == ExprClass.Variable || eclass == ExprClass.PropertyAccess ||
eclass == ExprClass.Value)) {
- report118 (ea.loc, ea.Expr, "variable or value");
+ ea.Expr.Error118 ("variable or value");
return null;
}
#endif
Type t = ea.Expr.Type;
+/*
+ if (t == typeof (System.Object))
+ {
+ // We can't resolve now, but we
+ // have to try to access the array with a call
+ // to LateIndexGet in the runtime
+
+ Expression lig_call_expr = Mono.MonoBASIC.Parser.DecomposeQI("Microsoft.VisualBasic.CompilerServices.LateBinding.LateIndexGet", Location.Null);
+ Expression obj_type = Mono.MonoBASIC.Parser.DecomposeQI("System.Object", Location.Null);
+ ArrayList adims = new ArrayList();
+
+ ArrayList ainit = new ArrayList();
+ foreach (Argument a in ea.Arguments)
+ ainit.Add ((Expression) a.Expr);
+
+ adims.Add ((Expression) new IntLiteral (ea.Arguments.Count));
+
+ Expression oace = new ArrayCreation (obj_type, adims, "", ainit, Location.Null);
+
+ ArrayList args = new ArrayList();
+ args.Add (new Argument(ea.Expr, Argument.AType.Expression));
+ args.Add (new Argument(oace, Argument.AType.Expression));
+ args.Add (new Argument(NullLiteral.Null, Argument.AType.Expression));
+
+ Expression lig_call = new Invocation (lig_call_expr, args, Location.Null);
+ lig_call = lig_call.Resolve(ec);
+ return lig_call;
+ }
+*/
if (t.GetArrayRank () != ea.Arguments.Count){
- Report.Error (22, ea.loc,
- "Incorrect number of indexes for array " +
- " expected: " + t.GetArrayRank () + " got: " +
- ea.Arguments.Count);
+ ea.Error (22,
+ "Incorrect number of indexes for array " +
+ " expected: " + t.GetArrayRank () + " got: " +
+ ea.Arguments.Count);
return null;
}
- type = t.GetElementType ();
+ type = TypeManager.TypeToCoreType (t.GetElementType ());
if (type.IsPointer && !ec.InUnsafe){
- UnsafeError (ea.loc);
+ UnsafeError (ea.Location);
return null;
}
+
+ foreach (Argument a in ea.Arguments){
+ Type argtype = a.Type;
+
+ if (argtype == TypeManager.int32_type ||
+ argtype == TypeManager.uint32_type ||
+ argtype == TypeManager.int64_type ||
+ argtype == TypeManager.uint64_type)
+ continue;
+
+ //
+ // Mhm. This is strage, because the Argument.Type is not the same as
+ // Argument.Expr.Type: the value changes depending on the ref/out setting.
+ //
+ // Wonder if I will run into trouble for this.
+ //
+ a.Expr = ExpressionToArrayArgument (ec, a.Expr, ea.Location);
+ if (a.Expr == null)
+ return null;
+ }
eclass = ExprClass.Variable;
}
/// <summary>
- /// Emits the right opcode to load an object of Type `t'
+ /// Emits the right opcode to load an object of Type 't'
/// from an array of T
/// </summary>
static public void EmitLoadOpcode (ILGenerator ig, Type type)
{
if (type == TypeManager.byte_type || type == TypeManager.bool_type)
- ig.Emit (OpCodes.Ldelem_I1);
- else if (type == TypeManager.sbyte_type)
ig.Emit (OpCodes.Ldelem_U1);
+ else if (type == TypeManager.sbyte_type)
+ ig.Emit (OpCodes.Ldelem_I1);
else if (type == TypeManager.short_type)
ig.Emit (OpCodes.Ldelem_I2);
- else if (type == TypeManager.ushort_type)
+ else if (type == TypeManager.ushort_type || type == TypeManager.char_type)
ig.Emit (OpCodes.Ldelem_U2);
else if (type == TypeManager.int32_type)
ig.Emit (OpCodes.Ldelem_I4);
}
/// <summary>
- /// Emits the right opcode to store an object of Type `t'
+ /// Emits the right opcode to store an object of Type 't'
/// from an array of T.
/// </summary>
static public void EmitStoreOpcode (ILGenerator ig, Type t)
{
+ t = TypeManager.TypeToCoreType (t);
+ if (TypeManager.IsEnumType (t) && t != TypeManager.enum_type)
+ t = TypeManager.EnumToUnderlying (t);
if (t == TypeManager.byte_type || t == TypeManager.sbyte_type ||
t == TypeManager.bool_type)
ig.Emit (OpCodes.Stelem_I1);
ig.Emit (OpCodes.Stelem_R8);
else if (t == TypeManager.intptr_type)
ig.Emit (OpCodes.Stelem_I);
- else if (t.IsValueType)
+ else if (t.IsValueType){
ig.Emit (OpCodes.Stobj, t);
- else
+ } else
ig.Emit (OpCodes.Stelem_Ref);
}
//
void LoadArrayAndArguments (EmitContext ec)
{
+ ILGenerator ig = ec.ig;
+
if (cached_locations == null){
ea.Expr.Emit (ec);
- foreach (Argument a in ea.Arguments)
+ foreach (Argument a in ea.Arguments){
+ Type argtype = a.Expr.Type;
+
a.Expr.Emit (ec);
+
+ if (argtype == TypeManager.int64_type)
+ ig.Emit (OpCodes.Conv_Ovf_I);
+ else if (argtype == TypeManager.uint64_type)
+ ig.Emit (OpCodes.Conv_Ovf_I_Un);
+ }
return;
}
- ILGenerator ig = ec.ig;
-
if (cached_locations [0] == null){
cached_locations [0] = new LocalTemporary (ec, ea.Expr.Type);
ea.Expr.Emit (ec);
int j = 1;
foreach (Argument a in ea.Arguments){
- cached_locations [j] = new LocalTemporary (ec, a.Expr.Type);
+ Type argtype = a.Expr.Type;
+
+ cached_locations [j] = new LocalTemporary (ec, TypeManager.intptr_type /* a.Expr.Type */);
a.Expr.Emit (ec);
+ if (argtype == TypeManager.int64_type)
+ ig.Emit (OpCodes.Conv_Ovf_I);
+ else if (argtype == TypeManager.uint64_type)
+ ig.Emit (OpCodes.Conv_Ovf_I_Un);
+
ig.Emit (OpCodes.Dup);
cached_locations [j].Store (ec);
j++;
// pair
//
if (rank == 1){
- if (t.IsValueType && !TypeManager.IsBuiltinType (t))
+ if (t == TypeManager.enum_type || t == TypeManager.decimal_type ||
+ (t.IsSubclassOf (TypeManager.value_type) && !TypeManager.IsEnumType (t) && !TypeManager.IsBuiltinType (t)))
ig.Emit (OpCodes.Ldelema, t);
}
}
Report.Error (21, loc,
- "Type `" + TypeManager.CSharpName (lookup_type) +
+ "Type '" + TypeManager.MonoBASIC_Name (lookup_type) +
"' does not have any indexers defined");
return null;
}
//
// Points to our "data" repository
//
- ElementAccess ea;
MethodInfo get, set;
Indexers ilist;
ArrayList set_arguments;
+ bool is_base_indexer;
+
+ protected Type indexer_type;
+ protected Type current_type;
+ protected Expression instance_expr;
+ protected ArrayList arguments;
- public IndexerAccess (ElementAccess ea_data)
+ public IndexerAccess (ElementAccess ea, Location loc)
+ : this (ea.Expr, false, loc)
{
- ea = ea_data;
- eclass = ExprClass.Value;
+ this.arguments = ea.Arguments;
+ }
+
+ protected IndexerAccess (Expression instance_expr, bool is_base_indexer,
+ Location loc)
+ {
+ this.instance_expr = instance_expr;
+ this.is_base_indexer = is_base_indexer;
+ this.eclass = ExprClass.Value;
+ this.loc = loc;
+ }
+
+ protected virtual bool CommonResolve (EmitContext ec)
+ {
+ indexer_type = instance_expr.Type;
+ current_type = ec.ContainerType;
+
+ return true;
}
public override Expression DoResolve (EmitContext ec)
{
- Type indexer_type = ea.Expr.Type;
-
+ if (!CommonResolve (ec))
+ return null;
+
//
- // Step 1: Query for all `Item' *properties*. Notice
+ // Step 1: Query for all 'Item' *properties*. Notice
// that the actual methods are pointed from here.
//
// This is a group of properties, piles of them.
if (ilist == null)
ilist = Indexers.GetIndexersForType (
- ec.ContainerType, indexer_type, ea.loc);
-
+ current_type, indexer_type, loc);
//
// Step 2: find the proper match
//
- if (ilist != null && ilist.getters != null && ilist.getters.Count > 0){
- Location loc = ea.loc;
-
+ if (ilist != null && ilist.getters != null && ilist.getters.Count > 0)
get = (MethodInfo) Invocation.OverloadResolve (
- ec, new MethodGroupExpr (ilist.getters, loc), ea.Arguments, loc);
- }
+ ec, new MethodGroupExpr (ilist.getters, loc), arguments, loc);
if (get == null){
- Report.Error (154, ea.loc,
- "indexer can not be used in this context, because " +
- "it lacks a `get' accessor");
+ Error (154, "indexer can not be used in this context, because " +
+ "it lacks a 'get' accessor");
return null;
}
type = get.ReturnType;
if (type.IsPointer && !ec.InUnsafe){
- UnsafeError (ea.loc);
+ UnsafeError (loc);
return null;
}
public override Expression DoResolveLValue (EmitContext ec, Expression right_side)
{
- Type indexer_type = ea.Expr.Type;
+ if (!CommonResolve (ec))
+ return null;
+
Type right_type = right_side.Type;
if (ilist == null)
ilist = Indexers.GetIndexersForType (
- ec.ContainerType, indexer_type, ea.loc);
+ current_type, indexer_type, loc);
if (ilist != null && ilist.setters != null && ilist.setters.Count > 0){
- Location loc = ea.loc;
-
- set_arguments = (ArrayList) ea.Arguments.Clone ();
+ set_arguments = (ArrayList) arguments.Clone ();
set_arguments.Add (new Argument (right_side, Argument.AType.Expression));
set = (MethodInfo) Invocation.OverloadResolve (
}
if (set == null){
- Report.Error (200, ea.loc,
- "indexer X.this [" + TypeManager.CSharpName (right_type) +
- "] lacks a `set' accessor");
- return null;
+ Error (200, "indexer X.this [" + TypeManager.MonoBASIC_Name (right_type) +
+ "] lacks a 'set' accessor");
+ return null;
}
type = TypeManager.void_type;
public override void Emit (EmitContext ec)
{
- Invocation.EmitCall (ec, false, false, ea.Expr, get, ea.Arguments);
+ Invocation.EmitCall (ec, false, false, instance_expr, get, arguments, loc);
}
//
//
public void EmitAssign (EmitContext ec, Expression source)
{
- Invocation.EmitCall (ec, false, false, ea.Expr, set, set_arguments);
+ Invocation.EmitCall (ec, false, false, instance_expr, set, set_arguments, loc);
}
}
/// The base operator for method names
/// </summary>
public class BaseAccess : Expression {
- string member;
- Location loc;
+ public string member;
public BaseAccess (string member, Location l)
{
Expression e;
if (ec.IsStatic){
- Report.Error (1511, loc,
- "Keyword base is not allowed in static method");
+ Error (1511, "Keyword MyBase is not allowed in static method");
return null;
}
- member_lookup = MemberLookup (ec, base_type, member, loc);
- if (member_lookup == null)
+ if (member == "New")
+ member = ".ctor";
+
+ member_lookup = MemberLookup (ec, current_type, base_type, member,
+ AllMemberTypes, AllBindingFlags, loc);
+
+ if (member_lookup == null) {
+ Error (30456,
+ TypeManager.MonoBASIC_Name (base_type) + " does not " +
+ "contain a definition for '" + member + "'");
return null;
+ }
Expression left;
if (ec.IsStatic)
- left = new TypeExpr (base_type);
+ left = new TypeExpr (base_type, loc);
else
left = ec.This;
e = MemberAccess.ResolveMemberAccess (ec, member_lookup, left, loc, null);
- if (e is PropertyExpr){
+
+ if (e is PropertyExpr) {
PropertyExpr pe = (PropertyExpr) e;
pe.IsBase = true;
/// <summary>
/// The base indexer operator
/// </summary>
- public class BaseIndexerAccess : Expression {
- ArrayList Arguments;
- Location loc;
-
- public BaseIndexerAccess (ArrayList args, Location l)
+ public class BaseIndexerAccess : IndexerAccess {
+ public BaseIndexerAccess (ArrayList args, Location loc)
+ : base (null, true, loc)
{
- Arguments = args;
- loc = l;
+ arguments = new ArrayList ();
+ foreach (Expression tmp in args)
+ arguments.Add (new Argument (tmp, Argument.AType.Expression));
}
- public override Expression DoResolve (EmitContext ec)
+ protected override bool CommonResolve (EmitContext ec)
{
- Type current_type = ec.ContainerType;
- Type base_type = current_type.BaseType;
- Expression member_lookup;
+ instance_expr = ec.This;
- if (ec.IsStatic){
- Report.Error (1511, loc,
- "Keyword base is not allowed in static method");
- return null;
- }
-
- member_lookup = MemberLookup (ec, base_type, "get_Item", MemberTypes.Method, AllBindingFlags, loc);
- if (member_lookup == null)
- return null;
+ current_type = ec.ContainerType.BaseType;
+ indexer_type = current_type;
- return MemberAccess.ResolveMemberAccess (ec, member_lookup, ec.This, loc, null);
- }
+ foreach (Argument a in arguments){
+ if (!a.Resolve (ec, loc))
+ return false;
+ }
- public override void Emit (EmitContext ec)
- {
- throw new Exception ("Should never be called");
+ return true;
}
}
/// we only care about the side effect conversions to be performed
///
/// This is also now used as a placeholder where a no-action expression
- /// is needed (the `New' class).
+ /// is needed (the 'New' class).
/// </summary>
public class EmptyExpression : Expression {
public EmptyExpression ()
{
type = TypeManager.object_type;
eclass = ExprClass.Value;
+ loc = Location.Null;
}
public EmptyExpression (Type t)
{
type = t;
eclass = ExprClass.Value;
+ loc = Location.Null;
}
public override Expression DoResolve (EmitContext ec)
MethodBase method;
Expression source;
- public UserCast (MethodInfo method, Expression source)
+ public UserCast (MethodInfo method, Expression source, Location l)
{
this.method = method;
this.source = source;
type = method.ReturnType;
eclass = ExprClass.Value;
+ loc = l;
}
public override Expression DoResolve (EmitContext ec)
// the type specification, we just use this to construct the type
// one bit at a time.
// </summary>
- public class ComposedCast : Expression {
+ public class ComposedCast : Expression, ITypeExpression {
Expression left;
string dim;
- Location loc;
public ComposedCast (Expression left, string dim, Location l)
{
loc = l;
}
- public override Expression DoResolve (EmitContext ec)
+ public Expression DoResolveType (EmitContext ec)
{
- left = left.Resolve (ec);
- if (left == null)
+ Type ltype = ec.DeclSpace.ResolveType (left, false, loc);
+ if (ltype == null)
return null;
- if (left.eclass != ExprClass.Type){
- report118 (loc, left, "type");
- return null;
+ //
+ // ltype.Fullname is already fully qualified, so we can skip
+ // a lot of probes, and go directly to TypeManager.LookupType
+ //
+ string cname = ltype.FullName + dim;
+ type = TypeManager.LookupTypeDirect (cname);
+ if (type == null){
+ //
+ // For arrays of enumerations we are having a problem
+ // with the direct lookup. Need to investigate.
+ //
+ // For now, fall back to the full lookup in that case.
+ //
+ type = RootContext.LookupType (
+ ec.DeclSpace, cname, false, loc);
+
+ if (type == null)
+ return null;
}
-
- type = RootContext.LookupType (
- ec.DeclSpace, left.Type.FullName + dim, false, loc);
- if (type == null)
- return null;
+ if (!ec.ResolvingTypeTree){
+ //
+ // If the above flag is set, this is being invoked from the ResolveType function.
+ // Upper layers take care of the type validity in this context.
+ //
if (!ec.InUnsafe && type.IsPointer){
UnsafeError (loc);
return null;
}
+ }
eclass = ExprClass.Type;
return this;
}
+ public override Expression DoResolve (EmitContext ec)
+ {
+ return DoResolveType (ec);
+ }
+
public override void Emit (EmitContext ec)
{
throw new Exception ("This should never be called");
}
+
+ public override string ToString ()
+ {
+ return left + dim;
+ }
}
//
public class ArrayPtr : Expression {
Expression array;
- public ArrayPtr (Expression array)
+ public ArrayPtr (Expression array, Location l)
{
Type array_type = array.Type.GetElementType ();
}
eclass = ExprClass.Value;
+ loc = l;
}
public override void Emit (EmitContext ec)
public class StringPtr : Expression {
LocalBuilder b;
- public StringPtr (LocalBuilder b)
+ public StringPtr (LocalBuilder b, Location l)
{
this.b = b;
eclass = ExprClass.Value;
type = TypeManager.char_ptr_type;
+ loc = l;
}
public override Expression DoResolve (EmitContext ec)
}
//
- // Implements the `stackalloc' keyword
+ // Implements the 'stackalloc' keyword
//
public class StackAlloc : Expression {
Type otype;
- string t;
+ Expression t;
Expression count;
- Location loc;
- public StackAlloc (string type, Expression count, Location l)
+ public StackAlloc (Expression type, Expression count, Location l)
{
t = type;
this.count = count;
}
if (ec.InCatch || ec.InFinally){
- Report.Error (255, loc,
+ Error (255,
"stackalloc can not be used in a catch or finally block");
return null;
}
-
- otype = RootContext.LookupType (ec.DeclSpace, t, false, loc);
+
+ otype = ec.DeclSpace.ResolveType (t, false, loc);
if (otype == null)
return null;
ig.Emit (OpCodes.Localloc);
}
}
+ public class Preserve : ExpressionStatement {
+ ArrayList args = null;
+ MethodInfo mi = null;
+ Expression target = null;
+ ExpressionStatement source = null;
+
+
+ public Preserve (Expression RedimTarget, ExpressionStatement acExpr, Location l)
+ {
+ Type type = typeof(Microsoft.VisualBasic.CompilerServices.Utils);
+ mi = type.GetMethod("CopyArray");
+
+ target = RedimTarget;
+ source = acExpr;
+
+ eclass = ExprClass.Value;
+ loc = l;
+ }
+
+ public override Expression DoResolve (EmitContext ec)
+ {
+ //
+ // We are born fully resolved
+ //
+ type = mi.ReturnType;
+
+ source.Resolve (ec);
+
+ return this;
+ }
+
+ public override void Emit (EmitContext ec)
+ {
+ args = new ArrayList (2);
+
+ args.Add (new Argument (target, Argument.AType.Expression));
+ args.Add (new Argument (source, Argument.AType.Expression));
+
+ Invocation.EmitArguments (ec, mi, args);
+
+ ec.ig.Emit (OpCodes.Call, mi);
+ return;
+ }
+
+ public override void EmitStatement (EmitContext ec)
+ {
+ Emit (ec);
+ }
+
+ }
}
projects / mono.git / blobdiff