//
//
using System;
+using System.Text;
+
+#if STATIC
+using MetaType = IKVM.Reflection.Type;
+using IKVM.Reflection;
+using IKVM.Reflection.Emit;
+#else
+using MetaType = System.Type;
using System.Reflection;
using System.Reflection.Emit;
-using System.Collections;
-using System.Text;
+#endif
namespace Mono.CSharp {
/// <summary>
/// Abstract Base class for parameters of a method.
/// </summary>
- public abstract class ParameterBase : Attributable {
-
+ public abstract class ParameterBase : Attributable
+ {
protected ParameterBuilder builder;
- protected ParameterBase (Attributes attrs)
- : base (attrs)
+ public override void ApplyAttributeBuilder (Attribute a, MethodSpec ctor, byte[] cdata, PredefinedAttributes pa)
{
- }
-
- public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb, PredefinedAttributes pa)
- {
-#if !NET_2_0
+#if false
if (a.Type == pa.MarshalAs) {
UnmanagedMarshal marshal = a.GetMarshal (this);
if (marshal != null) {
return;
}
- builder.SetCustomAttribute (cb);
+ if (a.Type == pa.Dynamic) {
+ a.Error_MisusedDynamicAttribute ();
+ return;
+ }
+
+ builder.SetCustomAttribute ((ConstructorInfo) ctor.GetMetaInfo (), cdata);
+ }
+
+ public ParameterBuilder Builder {
+ get {
+ return builder;
+ }
}
public override bool IsClsComplianceRequired()
/// <summary>
/// Class for applying custom attributes on the return type
/// </summary>
- public class ReturnParameter : ParameterBase {
- public ReturnParameter (MethodBuilder mb, Location location):
- base (null)
+ public class ReturnParameter : ParameterBase
+ {
+ MemberCore method;
+
+ // TODO: merge method and mb
+ public ReturnParameter (MemberCore method, MethodBuilder mb, Location location)
{
+ this.method = method;
try {
builder = mb.DefineParameter (0, ParameterAttributes.None, "");
}
catch (ArgumentOutOfRangeException) {
- Report.RuntimeMissingSupport (location, "custom attributes on the return type");
+ method.Compiler.Report.RuntimeMissingSupport (location, "custom attributes on the return type");
}
}
- public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb, PredefinedAttributes pa)
+ public override void ApplyAttributeBuilder (Attribute a, MethodSpec ctor, byte[] cdata, PredefinedAttributes pa)
{
if (a.Type == pa.CLSCompliant) {
- Report.Warning (3023, 1, a.Location, "CLSCompliant attribute has no meaning when applied to return types. Try putting it on the method instead");
+ method.Compiler.Report.Warning (3023, 1, a.Location,
+ "CLSCompliant attribute has no meaning when applied to return types. Try putting it on the method instead");
}
// This occurs after Warning -28
if (builder == null)
return;
- base.ApplyAttributeBuilder (a, cb, pa);
+ base.ApplyAttributeBuilder (a, ctor, cdata, pa);
}
public override AttributeTargets AttributeTargets {
}
}
- public override IResolveContext ResolveContext {
- get {
- throw new NotSupportedException ();
- }
- }
-
- /// <summary>
- /// Is never called
- /// </summary>
- public override string[] ValidAttributeTargets {
- get {
- return null;
- }
- }
- }
-
- /// <summary>
- /// Class for applying custom attributes on the implicit parameter type
- /// of the 'set' method in properties, and the 'add' and 'remove' methods in events.
- /// </summary>
- ///
- // TODO: should use more code from Parameter.ApplyAttributeBuilder
- public class ImplicitParameter : ParameterBase {
- public ImplicitParameter (MethodBuilder mb):
- base (null)
- {
- builder = mb.DefineParameter (1, ParameterAttributes.None, "value");
- }
-
- public override AttributeTargets AttributeTargets {
- get {
- return AttributeTargets.Parameter;
- }
- }
-
- public override IResolveContext ResolveContext {
- get {
- throw new NotSupportedException ();
- }
- }
-
/// <summary>
/// Is never called
/// </summary>
{
}
- public override Type Resolve (IResolveContext ec)
+ public override TypeSpec Resolve (IMemberContext ec, int index)
{
if (parameter_type == null)
throw new InternalErrorException ("A type of implicit lambda parameter `{0}' is not set",
Name);
+ base.idx = index;
return parameter_type;
}
- public Type Type {
- set { parameter_type = value; }
+ public void SetParameterType (TypeSpec type)
+ {
+ parameter_type = type;
}
}
{
}
- public override Type Resolve (IResolveContext ec)
+ public override TypeSpec Resolve (IMemberContext ec, int index)
{
- if (base.Resolve (ec) == null)
+ if (base.Resolve (ec, index) == null)
return null;
- if (!parameter_type.IsArray || parameter_type.GetArrayRank () != 1) {
- Report.Error (225, Location, "The params parameter must be a single dimensional array");
+ var ac = parameter_type as ArrayContainer;
+ if (ac == null || ac.Rank != 1) {
+ ec.Module.Compiler.Report.Error (225, Location, "The params parameter must be a single dimensional array");
return null;
}
return parameter_type;
}
- public override void ApplyAttributes (MethodBuilder mb, ConstructorBuilder cb, int index)
+ public override void ApplyAttributes (MethodBuilder mb, ConstructorBuilder cb, int index, PredefinedAttributes pa)
{
- base.ApplyAttributes (mb, cb, index);
- PredefinedAttributes.Get.ParamArray.EmitAttribute (builder, Location);
+ base.ApplyAttributes (mb, cb, index, pa);
+ pa.ParamArray.EmitAttribute (builder);
}
}
public class ArglistParameter : Parameter {
// Doesn't have proper type because it's never chosen for better conversion
public ArglistParameter (Location loc) :
- base (null, String.Empty, Parameter.Modifier.ARGLIST, null, loc)
+ base (null, String.Empty, Parameter.Modifier.NONE, null, loc)
{
+ parameter_type = InternalType.Arglist;
}
- public override void ApplyAttributes (MethodBuilder mb, ConstructorBuilder cb, int index)
+ public override void ApplyAttributes (MethodBuilder mb, ConstructorBuilder cb, int index, PredefinedAttributes pa)
{
// Nothing to do
}
return true;
}
- public override Type Resolve (IResolveContext ec)
- {
- return typeof (ArglistParameter);
- }
-
- public override string GetSignatureForError ()
+ public override TypeSpec Resolve (IMemberContext ec, int index)
{
- return "__arglist";
+ return parameter_type;
}
}
public interface IParameterData
{
+ Expression DefaultValue { get; }
bool HasExtensionMethodModifier { get; }
+ bool HasDefaultValue { get; }
Parameter.Modifier ModFlags { get; }
string Name { get; }
}
//
// Parameter information created by parser
//
- public class Parameter : ParameterBase, IParameterData, ILocalVariable {
+ public class Parameter : ParameterBase, IParameterData, ILocalVariable // TODO: INamedBlockVariable
+ {
[Flags]
public enum Modifier : byte {
NONE = 0,
PARAMS = 4,
// This is a flag which says that it's either REF or OUT.
ISBYREF = 8,
- ARGLIST = 16,
REFMASK = 32,
OUTMASK = 64,
This = 128
static string[] attribute_targets = new string [] { "param" };
- protected FullNamedExpression TypeName;
+ FullNamedExpression texpr;
readonly Modifier modFlags;
string name;
- protected Type parameter_type;
- public readonly Location Location;
- int idx;
+ Expression default_expr;
+ protected TypeSpec parameter_type;
+ readonly Location loc;
+ protected int idx;
public bool HasAddressTaken;
- IResolveContext resolve_context;
- LocalVariableReference expr_tree_variable;
+ TemporaryVariableReference expr_tree_variable;
static TypeExpr parameter_expr_tree_type;
- public HoistedVariable HoistedVariableReference;
+ HoistedVariable hoisted_variant;
public Parameter (FullNamedExpression type, string name, Modifier mod, Attributes attrs, Location loc)
- : base (attrs)
{
- if (type == TypeManager.system_void_expr)
- Report.Error (1536, loc, "Invalid parameter type `void'");
-
this.name = name;
modFlags = mod;
- Location = loc;
- TypeName = type;
+ this.loc = loc;
+ texpr = type;
+
+ // Only assign, attributes will be attached during resolve
+ base.attributes = attrs;
+ }
+
+ #region Properties
+
+ public DefaultParameterValueExpression DefaultValue {
+ get {
+ return default_expr as DefaultParameterValueExpression;
+ }
+ set {
+ default_expr = value;
+ }
+ }
+
+ Expression IParameterData.DefaultValue {
+ get {
+ var expr = default_expr as DefaultParameterValueExpression;
+ return expr == null ? default_expr : expr.Child;
+ }
+ }
+
+ bool HasOptionalExpression {
+ get {
+ return default_expr is DefaultParameterValueExpression;
+ }
}
- public override void ApplyAttributeBuilder (Attribute a, CustomAttributeBuilder cb, PredefinedAttributes pa)
+ public Location Location {
+ get {
+ return loc;
+ }
+ }
+
+ public TypeSpec Type {
+ get {
+ return parameter_type;
+ }
+ }
+
+ public FullNamedExpression TypeExpression {
+ get {
+ return texpr;
+ }
+ }
+
+ public override string[] ValidAttributeTargets {
+ get {
+ return attribute_targets;
+ }
+ }
+
+ #endregion
+
+ public override void ApplyAttributeBuilder (Attribute a, MethodSpec ctor, byte[] cdata, PredefinedAttributes pa)
{
if (a.Type == pa.In && ModFlags == Modifier.OUT) {
- Report.Error (36, a.Location, "An out parameter cannot have the `In' attribute");
+ a.Report.Error (36, a.Location, "An out parameter cannot have the `In' attribute");
return;
}
if (a.Type == pa.ParamArray) {
- Report.Error (674, a.Location, "Do not use `System.ParamArrayAttribute'. Use the `params' keyword instead");
+ a.Report.Error (674, a.Location, "Do not use `System.ParamArrayAttribute'. Use the `params' keyword instead");
return;
}
- if (a.Type == PredefinedAttributes.Get.Out && (ModFlags & Modifier.REF) == Modifier.REF &&
+ if (a.Type == pa.Out && (ModFlags & Modifier.REF) == Modifier.REF &&
!OptAttributes.Contains (pa.In)) {
- Report.Error (662, a.Location,
+ a.Report.Error (662, a.Location,
"Cannot specify only `Out' attribute on a ref parameter. Use both `In' and `Out' attributes or neither");
return;
}
if (a.Type == pa.CLSCompliant) {
- Report.Warning (3022, 1, a.Location, "CLSCompliant attribute has no meaning when applied to parameters. Try putting it on the method instead");
+ a.Report.Warning (3022, 1, a.Location, "CLSCompliant attribute has no meaning when applied to parameters. Try putting it on the method instead");
}
- // TypeManager.default_parameter_value_attribute_type is null if !NET_2_0, or if System.dll is not referenced
- if (a.Type == pa.DefaultParameterValue) {
- object val = a.GetParameterDefaultValue ();
- if (val != null) {
- Type t = val.GetType ();
- if (t.IsArray || TypeManager.IsSubclassOf (t, TypeManager.type_type)) {
- if (parameter_type == TypeManager.object_type) {
- if (!t.IsArray)
- t = TypeManager.type_type;
-
- Report.Error (1910, a.Location, "Argument of type `{0}' is not applicable for the DefaultValue attribute",
- TypeManager.CSharpName (t));
- } else {
- Report.Error (1909, a.Location, "The DefaultValue attribute is not applicable on parameters of type `{0}'",
- TypeManager.CSharpName (parameter_type)); ;
- }
- return;
- }
+ if (a.Type == pa.DefaultParameterValue || a.Type == pa.OptionalParameter) {
+ if (HasOptionalExpression) {
+ a.Report.Error (1745, a.Location,
+ "Cannot specify `{0}' attribute on optional parameter `{1}'",
+ TypeManager.CSharpName (a.Type).Replace ("Attribute", ""), Name);
}
- if (parameter_type == TypeManager.object_type ||
- (val == null && !TypeManager.IsGenericParameter (parameter_type) && TypeManager.IsReferenceType (parameter_type)) ||
- (val != null && TypeManager.TypeToCoreType (val.GetType ()) == parameter_type))
- builder.SetConstant (val);
- else
- Report.Error (1908, a.Location, "The type of the default value should match the type of the parameter");
- return;
+ if (a.Type == pa.DefaultParameterValue)
+ return;
}
- base.ApplyAttributeBuilder (a, cb, pa);
+ base.ApplyAttributeBuilder (a, ctor, cdata, pa);
}
public virtual bool CheckAccessibility (InterfaceMemberBase member)
{
- if (parameter_type == null || TypeManager.IsGenericParameter (parameter_type))
+ if (parameter_type == null)
return true;
return member.IsAccessibleAs (parameter_type);
}
- public override IResolveContext ResolveContext {
- get {
- return resolve_context;
- }
+ public static void Reset ()
+ {
+ parameter_expr_tree_type = null;
}
// <summary>
// Resolve is used in method definitions
// </summary>
- public virtual Type Resolve (IResolveContext ec)
+ public virtual TypeSpec Resolve (IMemberContext rc, int index)
{
- // HACK: to resolve attributes correctly
- this.resolve_context = ec;
-
if (parameter_type != null)
return parameter_type;
- TypeExpr texpr = TypeName.ResolveAsTypeTerminal (ec, false);
- if (texpr == null)
+ if (attributes != null)
+ attributes.AttachTo (this, rc);
+
+ var expr = texpr.ResolveAsTypeTerminal (rc, false);
+ if (expr == null)
return null;
+ this.idx = index;
+ texpr = expr;
parameter_type = texpr.Type;
-
- // Ignore all checks for dummy members
- AbstractPropertyEventMethod pem = ec as AbstractPropertyEventMethod;
- if (pem != null && pem.IsDummy)
- return parameter_type;
-
+
if ((modFlags & Parameter.Modifier.ISBYREF) != 0 &&
TypeManager.IsSpecialType (parameter_type)) {
- Report.Error (1601, Location, "Method or delegate parameter cannot be of type `{0}'",
+ rc.Module.Compiler.Report.Error (1601, Location, "Method or delegate parameter cannot be of type `{0}'",
GetSignatureForError ());
return null;
}
TypeManager.CheckTypeVariance (parameter_type,
(modFlags & Parameter.Modifier.ISBYREF) != 0 ? Variance.None : Variance.Contravariant,
- ec as MemberCore);
-
- if (texpr is TypeParameterExpr)
- return parameter_type;
+ rc);
- if ((parameter_type.Attributes & Class.StaticClassAttribute) == Class.StaticClassAttribute) {
- Report.Error (721, Location, "`{0}': static types cannot be used as parameters",
+ if (parameter_type.IsStatic) {
+ rc.Module.Compiler.Report.Error (721, Location, "`{0}': static types cannot be used as parameters",
texpr.GetSignatureForError ());
return parameter_type;
}
- if ((modFlags & Modifier.This) != 0 && parameter_type.IsPointer) {
- Report.Error (1103, Location, "The type of extension method cannot be `{0}'",
+ if ((modFlags & Modifier.This) != 0 && (parameter_type.IsPointer || parameter_type == InternalType.Dynamic)) {
+ rc.Module.Compiler.Report.Error (1103, Location, "The extension method cannot be of type `{0}'",
TypeManager.CSharpName (parameter_type));
}
return parameter_type;
}
- public void ResolveVariable (int idx)
+ public void ResolveDefaultValue (ResolveContext rc)
{
- this.idx = idx;
+ //
+ // Default value was specified using an expression
+ //
+ if (default_expr != null) {
+ ((DefaultParameterValueExpression)default_expr).Resolve (rc, this);
+ return;
+ }
+
+ if (attributes == null)
+ return;
+
+ var opt_attr = attributes.Search (rc.Module.PredefinedAttributes.OptionalParameter);
+ var def_attr = attributes.Search (rc.Module.PredefinedAttributes.DefaultParameterValue);
+ if (def_attr != null) {
+ if (def_attr.Resolve () == null)
+ return;
+
+ var default_expr_attr = def_attr.GetParameterDefaultValue ();
+ if (default_expr_attr == null)
+ return;
+
+ var dpa_rc = def_attr.CreateResolveContext ();
+ default_expr = default_expr_attr.Resolve (dpa_rc);
+
+ if (default_expr is BoxedCast)
+ default_expr = ((BoxedCast) default_expr).Child;
+
+ Constant c = default_expr as Constant;
+ if (c == null) {
+ if (parameter_type == TypeManager.object_type) {
+ rc.Report.Error (1910, default_expr.Location,
+ "Argument of type `{0}' is not applicable for the DefaultParameterValue attribute",
+ default_expr.Type.GetSignatureForError ());
+ } else {
+ rc.Report.Error (1909, default_expr.Location,
+ "The DefaultParameterValue attribute is not applicable on parameters of type `{0}'",
+ default_expr.Type.GetSignatureForError ()); ;
+ }
+
+ default_expr = null;
+ return;
+ }
+
+ if (TypeSpecComparer.IsEqual (default_expr.Type, parameter_type) ||
+ (default_expr is NullConstant && TypeManager.IsReferenceType (parameter_type) && !parameter_type.IsGenericParameter) ||
+ TypeSpecComparer.IsEqual (parameter_type, TypeManager.object_type)) {
+ return;
+ }
+
+ //
+ // LAMESPEC: Some really weird csc behaviour which we have to mimic
+ // User operators returning same type as parameter type are considered
+ // valid for this attribute only
+ //
+ // struct S { public static implicit operator S (int i) {} }
+ //
+ // void M ([DefaultParameterValue (3)]S s)
+ //
+ var expr = Convert.ImplicitUserConversion (dpa_rc, default_expr, parameter_type, loc);
+ if (expr != null && TypeSpecComparer.IsEqual (expr.Type, parameter_type)) {
+ return;
+ }
+
+ rc.Report.Error (1908, default_expr.Location, "The type of the default value should match the type of the parameter");
+ return;
+ }
+
+ if (opt_attr != null) {
+ default_expr = EmptyExpression.MissingValue;
+ }
+ }
+
+ public bool HasDefaultValue {
+ get { return default_expr != null; }
}
public bool HasExtensionMethodModifier {
get { return (modFlags & Modifier.This) != 0; }
}
+ //
+ // Hoisted parameter variant
+ //
+ public HoistedVariable HoistedVariant {
+ get {
+ return hoisted_variant;
+ }
+ set {
+ hoisted_variant = value;
+ }
+ }
+
public Modifier ModFlags {
get { return modFlags & ~Modifier.This; }
}
set { name = value; }
}
- ParameterAttributes Attributes {
- get { return ParametersCompiled.GetParameterAttribute (modFlags); }
- }
-
public override AttributeTargets AttributeTargets {
get {
return AttributeTargets.Parameter;
if (parameter_type != null)
type_name = TypeManager.CSharpName (parameter_type);
else
- type_name = TypeName.GetSignatureForError ();
+ type_name = texpr.GetSignatureForError ();
string mod = GetModifierSignature (modFlags);
if (mod.Length > 0)
}
}
- public void IsClsCompliant ()
+ public void IsClsCompliant (IMemberContext ctx)
{
- if (AttributeTester.IsClsCompliant (parameter_type))
+ if (parameter_type.IsCLSCompliant ())
return;
- Report.Warning (3001, 1, Location, "Argument type `{0}' is not CLS-compliant", GetSignatureForError ());
+ ctx.Module.Compiler.Report.Warning (3001, 1, Location,
+ "Argument type `{0}' is not CLS-compliant", parameter_type.GetSignatureForError ());
}
- public virtual void ApplyAttributes (MethodBuilder mb, ConstructorBuilder cb, int index)
+ public virtual void ApplyAttributes (MethodBuilder mb, ConstructorBuilder cb, int index, PredefinedAttributes pa)
{
+ if (builder != null)
+ throw new InternalErrorException ("builder already exists");
+
+ var pattrs = ParametersCompiled.GetParameterAttribute (modFlags);
+ if (HasOptionalExpression)
+ pattrs |= ParameterAttributes.Optional;
+
if (mb == null)
- builder = cb.DefineParameter (index, Attributes, Name);
+ builder = cb.DefineParameter (index, pattrs, Name);
else
- builder = mb.DefineParameter (index, Attributes, Name);
+ builder = mb.DefineParameter (index, pattrs, Name);
if (OptAttributes != null)
OptAttributes.Emit ();
- }
- public override string[] ValidAttributeTargets {
- get {
- return attribute_targets;
+ if (HasDefaultValue) {
+ //
+ // Emit constant values for true constants only, the other
+ // constant-like expressions will rely on default value expression
+ //
+ var def_value = DefaultValue;
+ Constant c = def_value != null ? def_value.Child as Constant : default_expr as Constant;
+ if (c != null) {
+ if (default_expr.Type == TypeManager.decimal_type) {
+ pa.DecimalConstant.EmitAttribute (builder, (decimal) c.GetValue (), c.Location);
+ } else {
+ builder.SetConstant (c.GetValue ());
+ }
+ } else if (default_expr.Type.IsStruct) {
+ //
+ // Handles special case where default expression is used with value-type
+ //
+ // void Foo (S s = default (S)) {}
+ //
+ builder.SetConstant (null);
+ }
+ }
+
+ if (parameter_type != null) {
+ if (parameter_type == InternalType.Dynamic) {
+ pa.Dynamic.EmitAttribute (builder);
+ } else if (parameter_type.HasDynamicElement) {
+ pa.Dynamic.EmitAttribute (builder, parameter_type, Location);
+ }
}
}
public Parameter Clone ()
{
Parameter p = (Parameter) MemberwiseClone ();
- if (attributes != null) {
+ if (attributes != null)
p.attributes = attributes.Clone ();
- p.attributes.AttachTo (p);
- }
return p;
}
- public ExpressionStatement CreateExpressionTreeVariable (EmitContext ec)
+ public ExpressionStatement CreateExpressionTreeVariable (BlockContext ec)
{
- //
- // A parameter is not hoisted when used directly as ET
- //
- HoistedVariableReference = null;
-
if ((modFlags & Modifier.ISBYREF) != 0)
- Report.Error (1951, Location, "An expression tree parameter cannot use `ref' or `out' modifier");
+ ec.Report.Error (1951, Location, "An expression tree parameter cannot use `ref' or `out' modifier");
- LocalInfo variable = ec.CurrentBlock.AddTemporaryVariable (
- ResolveParameterExpressionType (ec, Location), Location);
- variable.Resolve (ec);
+ expr_tree_variable = TemporaryVariableReference.Create (ResolveParameterExpressionType (ec, Location).Type, ec.CurrentBlock.ParametersBlock, Location);
+ expr_tree_variable = (TemporaryVariableReference) expr_tree_variable.Resolve (ec);
- expr_tree_variable = new LocalVariableReference (
- ec.CurrentBlock, variable.Name, Location, variable, false);
-
- ArrayList arguments = new ArrayList (2);
+ Arguments arguments = new Arguments (2);
arguments.Add (new Argument (new TypeOf (
new TypeExpression (parameter_type, Location), Location)));
arguments.Add (new Argument (new StringConstant (Name, Location)));
return new SimpleAssign (ExpressionTreeVariableReference (),
- Expression.CreateExpressionFactoryCall ("Parameter", null, arguments, Location));
+ Expression.CreateExpressionFactoryCall (ec, "Parameter", null, arguments, Location));
}
public void Emit (EmitContext ec)
if (!ec.IsStatic)
arg_idx++;
- ParameterReference.EmitLdArg (ec.ig, arg_idx);
+ ParameterReference.EmitLdArg (ec, arg_idx);
}
public void EmitAssign (EmitContext ec)
arg_idx++;
if (arg_idx <= 255)
- ec.ig.Emit (OpCodes.Starg_S, (byte) arg_idx);
+ ec.Emit (OpCodes.Starg_S, (byte) arg_idx);
else
- ec.ig.Emit (OpCodes.Starg, arg_idx);
+ ec.Emit (OpCodes.Starg, arg_idx);
}
public void EmitAddressOf (EmitContext ec)
bool is_ref = (ModFlags & Modifier.ISBYREF) != 0;
if (is_ref) {
- ParameterReference.EmitLdArg (ec.ig, arg_idx);
+ ParameterReference.EmitLdArg (ec, arg_idx);
} else {
if (arg_idx <= 255)
- ec.ig.Emit (OpCodes.Ldarga_S, (byte) arg_idx);
+ ec.Emit (OpCodes.Ldarga_S, (byte) arg_idx);
else
- ec.ig.Emit (OpCodes.Ldarga, arg_idx);
+ ec.Emit (OpCodes.Ldarga, arg_idx);
}
}
- public Expression ExpressionTreeVariableReference ()
+ public TemporaryVariableReference ExpressionTreeVariableReference ()
{
return expr_tree_variable;
}
//
// System.Linq.Expressions.ParameterExpression type
//
- public static TypeExpr ResolveParameterExpressionType (EmitContext ec, Location location)
+ public static TypeExpr ResolveParameterExpressionType (IMemberContext ec, Location location)
{
if (parameter_expr_tree_type != null)
return parameter_expr_tree_type;
- Type p_type = TypeManager.parameter_expression_type;
- if (p_type == null) {
- p_type = TypeManager.CoreLookupType ("System.Linq.Expressions", "ParameterExpression", Kind.Class, true);
- TypeManager.parameter_expression_type = p_type;
- }
-
+ TypeSpec p_type = ec.Module.PredefinedTypes.ParameterExpression.Resolve (location);
parameter_expr_tree_type = new TypeExpression (p_type, location).
ResolveAsTypeTerminal (ec, false);
return parameter_expr_tree_type;
}
+
+ public void Warning_UselessOptionalParameter (Report Report)
+ {
+ Report.Warning (1066, 1, Location,
+ "The default value specified for optional parameter `{0}' will never be used",
+ Name);
+ }
}
//
{
readonly string name;
readonly Parameter.Modifier modifiers;
+ readonly Expression default_value;
public ParameterData (string name, Parameter.Modifier modifiers)
{
this.modifiers = modifiers;
}
+ public ParameterData (string name, Parameter.Modifier modifiers, Expression defaultValue)
+ : this (name, modifiers)
+ {
+ this.default_value = defaultValue;
+ }
+
#region IParameterData Members
+ public Expression DefaultValue {
+ get { return default_value; }
+ }
+
public bool HasExtensionMethodModifier {
get { return (modifiers & Parameter.Modifier.This) != 0; }
}
+ public bool HasDefaultValue {
+ get { return default_value != null; }
+ }
+
public Parameter.Modifier ModFlags {
get { return modifiers & ~Parameter.Modifier.This; }
}
// Null object pattern
protected IParameterData [] parameters;
- protected Type [] types;
+ protected TypeSpec [] types;
+
+ public CallingConventions CallingConvention {
+ get {
+ return has_arglist ?
+ CallingConventions.VarArgs :
+ CallingConventions.Standard;
+ }
+ }
public int Count {
get { return parameters.Length; }
}
- public Type ExtensionMethodType {
+ public TypeSpec ExtensionMethodType {
get {
if (Count == 0)
return null;
ParameterAttributes.Out : ParameterAttributes.None;
}
- public Type [] GetEmitTypes ()
+ // Very expensive operation
+ public MetaType[] GetMetaInfo ()
{
- Type [] types = null;
+ MetaType[] types;
if (has_arglist) {
if (Count == 1)
- return Type.EmptyTypes;
+ return MetaType.EmptyTypes;
- types = new Type [Count - 1];
- Array.Copy (Types, types, types.Length);
+ types = new MetaType[Count - 1];
+ } else {
+ if (Count == 0)
+ return MetaType.EmptyTypes;
+
+ types = new MetaType[Count];
}
- for (int i = 0; i < Count; ++i) {
+ for (int i = 0; i < types.Length; ++i) {
+ types[i] = Types[i].GetMetaInfo ();
+
if ((FixedParameters [i].ModFlags & Parameter.Modifier.ISBYREF) == 0)
continue;
- if (types == null)
- types = (Type []) Types.Clone ();
-
- types [i] = TypeManager.GetReferenceType (types [i]);
+ // TODO MemberCache: Should go to MetaInfo getter
+ types [i] = types [i].MakeByRefType ();
}
- if (types == null)
- types = Types;
-
return types;
}
+ //
+ // Returns the parameter information based on the name
+ //
+ public int GetParameterIndexByName (string name)
+ {
+ for (int idx = 0; idx < Count; ++idx) {
+ if (parameters [idx].Name == name)
+ return idx;
+ }
+
+ return -1;
+ }
+
public string GetSignatureForError ()
{
- StringBuilder sb = new StringBuilder ("(");
- for (int i = 0; i < Count; ++i) {
+ return GetSignatureForError ("(", ")", Count);
+ }
+
+ public string GetSignatureForError (string start, string end, int count)
+ {
+ StringBuilder sb = new StringBuilder (start);
+ for (int i = 0; i < count; ++i) {
if (i != 0)
sb.Append (", ");
sb.Append (ParameterDesc (i));
}
- sb.Append (')');
+ sb.Append (end);
return sb.ToString ();
}
get { return parameters.Length == 0; }
}
+ public AParametersCollection Inflate (TypeParameterInflator inflator)
+ {
+ TypeSpec[] inflated_types = null;
+ bool default_value = false;
+
+ for (int i = 0; i < Count; ++i) {
+ var inflated_param = inflator.Inflate (types[i]);
+ if (inflated_types == null) {
+ if (inflated_param == types[i])
+ continue;
+
+ default_value |= FixedParameters[i] is DefaultValueExpression;
+ inflated_types = new TypeSpec[types.Length];
+ Array.Copy (types, inflated_types, types.Length);
+ }
+
+ inflated_types[i] = inflated_param;
+ }
+
+ if (inflated_types == null)
+ return this;
+
+ var clone = (AParametersCollection) MemberwiseClone ();
+ clone.types = inflated_types;
+ if (default_value) {
+ for (int i = 0; i < Count; ++i) {
+ var dve = clone.FixedParameters[i] as DefaultValueExpression;
+ if (dve != null) {
+ throw new NotImplementedException ("net");
+ // clone.FixedParameters [i].DefaultValue = new DefaultValueExpression ();
+ }
+ }
+ }
+
+ return clone;
+ }
+
public string ParameterDesc (int pos)
{
if (types == null || types [pos] == null)
if (FixedParameters [pos].HasExtensionMethodModifier)
return "this " + type;
- Parameter.Modifier mod = FixedParameters [pos].ModFlags & ~Parameter.Modifier.ARGLIST;
+ Parameter.Modifier mod = FixedParameters [pos].ModFlags;
if (mod == 0)
return type;
return Parameter.GetModifierSignature (mod) + " " + type;
}
- public Type[] Types {
+ public TypeSpec[] Types {
get { return types; }
set { types = value; }
}
-
-#if MS_COMPATIBLE
- public AParametersCollection InflateTypes (Type[] genArguments, Type[] argTypes)
- {
- AParametersCollection p = (AParametersCollection) MemberwiseClone (); // Clone ();
-
- for (int i = 0; i < Count; ++i) {
- if (types[i].IsGenericType) {
- Type[] gen_arguments_open = new Type[types[i].GetGenericTypeDefinition ().GetGenericArguments ().Length];
- Type[] gen_arguments = types[i].GetGenericArguments ();
- for (int ii = 0; ii < gen_arguments_open.Length; ++ii) {
- if (gen_arguments[ii].IsGenericParameter) {
- Type t = argTypes[gen_arguments[ii].GenericParameterPosition];
- gen_arguments_open[ii] = t;
- } else
- gen_arguments_open[ii] = gen_arguments[ii];
- }
-
- p.types[i] = types[i].GetGenericTypeDefinition ().MakeGenericType (gen_arguments_open);
- continue;
- }
-
- if (types[i].IsGenericParameter) {
- Type gen_argument = argTypes[types[i].GenericParameterPosition];
- p.types[i] = gen_argument;
- continue;
- }
- }
-
- return p;
- }
-#endif
}
//
//
public class ParametersImported : AParametersCollection
{
- ParametersImported (AParametersCollection param, Type[] types)
- {
- this.parameters = param.FixedParameters;
- this.types = types;
- has_arglist = param.HasArglist;
- has_params = param.HasParams;
- }
-
- ParametersImported (IParameterData [] parameters, Type [] types, MethodBase method, bool hasParams)
+ public ParametersImported (IParameterData [] parameters, TypeSpec [] types, bool hasArglist, bool hasParams)
{
this.parameters = parameters;
this.types = types;
- has_arglist = (method.CallingConvention & CallingConventions.VarArgs) != 0;
- if (has_arglist) {
- this.parameters = new IParameterData [parameters.Length + 1];
- parameters.CopyTo (this.parameters, 0);
- this.parameters [parameters.Length] = new ArglistParameter (Location.Null);
- this.types = new Type [types.Length + 1];
- types.CopyTo (this.types, 0);
- this.types [types.Length] = TypeManager.arg_iterator_type;
- }
- has_params = hasParams;
+ this.has_arglist = hasArglist;
+ this.has_params = hasParams;
}
- public ParametersImported (IParameterData [] param, Type[] types)
+ public ParametersImported (IParameterData[] param, TypeSpec[] types, bool hasParams)
{
this.parameters = param;
this.types = types;
- }
-
- public static AParametersCollection Create (MethodBase method)
- {
- return Create (method.GetParameters (), method);
- }
-
- //
- // Generic method parameters importer, param is shared between all instances
- //
- public static AParametersCollection Create (AParametersCollection param, MethodBase method)
- {
- if (param.IsEmpty)
- return param;
-
- ParameterInfo [] pi = method.GetParameters ();
- Type [] types = new Type [pi.Length];
- for (int i = 0; i < types.Length; i++) {
- Type t = pi [i].ParameterType;
- if (t.IsByRef)
- t = TypeManager.GetElementType (t);
-
- types [i] = TypeManager.TypeToCoreType (t);
- }
-
- return new ParametersImported (param, types);
- }
-
- //
- // Imports SRE parameters
- //
- public static AParametersCollection Create (ParameterInfo [] pi, MethodBase method)
- {
- if (pi.Length == 0) {
- if (method != null && (method.CallingConvention & CallingConventions.VarArgs) != 0)
- return new ParametersImported (new IParameterData [0], Type.EmptyTypes, method, false);
-
- return ParametersCompiled.EmptyReadOnlyParameters;
- }
-
- Type [] types = new Type [pi.Length];
- IParameterData [] par = new IParameterData [pi.Length];
- bool is_params = false;
- PredefinedAttribute extension_attr = PredefinedAttributes.Get.Extension;
- PredefinedAttribute param_attr = PredefinedAttributes.Get.ParamArray;
- for (int i = 0; i < types.Length; i++) {
- types [i] = TypeManager.TypeToCoreType (pi [i].ParameterType);
-
- ParameterInfo p = pi [i];
- Parameter.Modifier mod = 0;
- if (types [i].IsByRef) {
- if ((p.Attributes & (ParameterAttributes.Out | ParameterAttributes.In)) == ParameterAttributes.Out)
- mod = Parameter.Modifier.OUT;
- else
- mod = Parameter.Modifier.REF;
-
- //
- // Strip reference wrapping
- //
- types [i] = TypeManager.GetElementType (types [i]);
- } else if (i == 0 && extension_attr.IsDefined && method != null && method.IsStatic &&
- (method.DeclaringType.Attributes & Class.StaticClassAttribute) == Class.StaticClassAttribute &&
- method.IsDefined (extension_attr.Type, false)) {
- mod = Parameter.Modifier.This;
- } else if (i >= pi.Length - 2) {
- if (types[i].IsArray) {
- if (p.IsDefined (param_attr.Type, false)) {
- mod = Parameter.Modifier.PARAMS;
- is_params = true;
- }
- } else if (types [i] == TypeManager.runtime_argument_handle_type) {
- par [i] = new ArglistParameter (Location.Null);
- continue;
- }
- }
-
- par [i] = new ParameterData (p.Name, mod);
- }
-
- return method != null ?
- new ParametersImported (par, types, method, is_params) :
- new ParametersImported (par, types);
+ this.has_params = hasParams;
}
}
private ParametersCompiled ()
{
parameters = new Parameter [0];
- types = Type.EmptyTypes;
+ types = TypeSpec.EmptyTypes;
}
- private ParametersCompiled (Parameter [] parameters, Type [] types)
+ private ParametersCompiled (IParameterData[] parameters, TypeSpec[] types)
{
this.parameters = parameters;
this.types = types;
public ParametersCompiled (params Parameter[] parameters)
{
- if (parameters == null)
+ if (parameters == null || parameters.Length == 0)
throw new ArgumentException ("Use EmptyReadOnlyParameters");
this.parameters = parameters;
int count = parameters.Length;
- if (count == 0)
- return;
-
- if (count == 1) {
- has_params = (parameters [0].ModFlags & Parameter.Modifier.PARAMS) != 0;
- return;
- }
-
for (int i = 0; i < count; i++){
- string base_name = parameters [i].Name;
has_params |= (parameters [i].ModFlags & Parameter.Modifier.PARAMS) != 0;
-
- for (int j = i + 1; j < count; j++){
- if (base_name != parameters [j].Name)
- continue;
-
- ErrorDuplicateName (parameters [i]);
- i = j;
- }
}
}
this.has_arglist = has_arglist;
}
- public static ParametersCompiled CreateFullyResolved (Parameter p, Type type)
+ public static ParametersCompiled CreateFullyResolved (Parameter p, TypeSpec type)
{
- return new ParametersCompiled (new Parameter [] { p }, new Type [] { type });
+ return new ParametersCompiled (new Parameter [] { p }, new TypeSpec [] { type });
}
- public static ParametersCompiled CreateFullyResolved (Parameter[] parameters, Type[] types)
+ public static ParametersCompiled CreateFullyResolved (Parameter[] parameters, TypeSpec[] types)
{
return new ParametersCompiled (parameters, types);
}
- public static ParametersCompiled MergeGenerated (ParametersCompiled userParams, bool checkConflicts, Parameter compilerParams, Type compilerTypes)
+ //
+ // TODO: This does not fit here, it should go to different version of AParametersCollection
+ // as the underlying type is not Parameter and some methods will fail to cast
+ //
+ public static AParametersCollection CreateFullyResolved (TypeSpec[] types)
+ {
+ var pd = new ParameterData [types.Length];
+ for (int i = 0; i < pd.Length; ++i)
+ pd[i] = new ParameterData (null, Parameter.Modifier.NONE, null);
+
+ return new ParametersCompiled (pd, types);
+ }
+
+ public static ParametersCompiled CreateImplicitParameter (FullNamedExpression texpr, Location loc)
{
- return MergeGenerated (userParams, checkConflicts,
+ return new ParametersCompiled (
+ new[] { new Parameter (texpr, "value", Parameter.Modifier.NONE, null, loc) },
+ null);
+ }
+
+ //
+ // Returns non-zero value for equal CLS parameter signatures
+ //
+ public static int IsSameClsSignature (AParametersCollection a, AParametersCollection b)
+ {
+ int res = 0;
+
+ for (int i = 0; i < a.Count; ++i) {
+ var a_type = a.Types[i];
+ var b_type = b.Types[i];
+ if (TypeSpecComparer.Override.IsEqual (a_type, b_type)) {
+ const Parameter.Modifier ref_out = Parameter.Modifier.REF | Parameter.Modifier.OUT;
+ if ((a.FixedParameters[i].ModFlags & ref_out) != (b.FixedParameters[i].ModFlags & ref_out))
+ res |= 1;
+
+ continue;
+ }
+
+ var ac_a = a_type as ArrayContainer;
+ if (ac_a == null)
+ return 0;
+
+ var ac_b = b_type as ArrayContainer;
+ if (ac_b == null)
+ return 0;
+
+ if (ac_a.Element is ArrayContainer || ac_b.Element is ArrayContainer) {
+ res |= 2;
+ continue;
+ }
+
+ if (ac_a.Rank != ac_b.Rank && TypeSpecComparer.Override.IsEqual (ac_a.Element, ac_b.Element)) {
+ res |= 1;
+ continue;
+ }
+
+ return 0;
+ }
+
+ return res;
+ }
+
+ public static ParametersCompiled MergeGenerated (CompilerContext ctx, ParametersCompiled userParams, bool checkConflicts, Parameter compilerParams, TypeSpec compilerTypes)
+ {
+ return MergeGenerated (ctx, userParams, checkConflicts,
new Parameter [] { compilerParams },
- new Type [] { compilerTypes });
+ new TypeSpec [] { compilerTypes });
}
//
// Use this method when you merge compiler generated parameters with user parameters
//
- public static ParametersCompiled MergeGenerated (ParametersCompiled userParams, bool checkConflicts, Parameter[] compilerParams, Type[] compilerTypes)
+ public static ParametersCompiled MergeGenerated (CompilerContext ctx, ParametersCompiled userParams, bool checkConflicts, Parameter[] compilerParams, TypeSpec[] compilerTypes)
{
Parameter[] all_params = new Parameter [userParams.Count + compilerParams.Length];
userParams.FixedParameters.CopyTo(all_params, 0);
- Type [] all_types;
+ TypeSpec [] all_types;
if (userParams.types != null) {
- all_types = new Type [all_params.Length];
+ all_types = new TypeSpec [all_params.Length];
userParams.Types.CopyTo (all_types, 0);
} else {
all_types = null;
for (int i = 0; i < last_filled; ++i) {
while (p.Name == all_params [i].Name) {
if (checkConflicts && i < userParams.Count) {
- Report.Error (316, userParams [i].Location,
+ ctx.Report.Error (316, userParams[i].Location,
"The parameter name `{0}' conflicts with a compiler generated name", p.Name);
}
p.Name = '_' + p.Name;
return parameters;
}
- protected virtual void ErrorDuplicateName (Parameter p)
- {
- Report.Error (100, p.Location, "The parameter name `{0}' is a duplicate", p.Name);
- }
-
- /// <summary>
- /// Returns the parameter information based on the name
- /// </summary>
- public int GetParameterIndexByName (string name)
- {
- for (int idx = 0; idx < Count; ++idx) {
- if (parameters [idx].Name == name)
- return idx;
- }
-
- return -1;
- }
-
- public bool Resolve (IResolveContext ec)
+ public bool Resolve (IMemberContext ec)
{
if (types != null)
return true;
- types = new Type [Count];
+ types = new TypeSpec [Count];
bool ok = true;
Parameter p;
for (int i = 0; i < FixedParameters.Length; ++i) {
p = this [i];
- Type t = p.Resolve (ec);
+ TypeSpec t = p.Resolve (ec, i);
if (t == null) {
ok = false;
continue;
return ok;
}
- public void ResolveVariable ()
+ public void ResolveDefaultValues (MemberCore m)
{
- for (int i = 0; i < FixedParameters.Length; ++i) {
- this [i].ResolveVariable (i);
- }
- }
+ ResolveContext rc = null;
+ for (int i = 0; i < parameters.Length; ++i) {
+ Parameter p = (Parameter) parameters [i];
- public CallingConventions CallingConvention
- {
- get {
- if (HasArglist)
- return CallingConventions.VarArgs;
- else
- return CallingConventions.Standard;
+ //
+ // Try not to enter default values resolution if there are is not any default value possible
+ //
+ if (p.HasDefaultValue || p.OptAttributes != null) {
+ if (rc == null)
+ rc = new ResolveContext (m);
+
+ p.ResolveDefaultValue (rc);
+ }
}
}
// Define each type attribute (in/out/ref) and
// the argument names.
- public void ApplyAttributes (MethodBase builder)
+ public void ApplyAttributes (IMemberContext mc, MethodBase builder)
{
if (Count == 0)
return;
MethodBuilder mb = builder as MethodBuilder;
ConstructorBuilder cb = builder as ConstructorBuilder;
+ var pa = mc.Module.PredefinedAttributes;
for (int i = 0; i < Count; i++) {
- this [i].ApplyAttributes (mb, cb, i + 1);
+ this [i].ApplyAttributes (mb, cb, i + 1, pa);
}
}
- public void VerifyClsCompliance ()
+ public void VerifyClsCompliance (IMemberContext ctx)
{
foreach (Parameter p in FixedParameters)
- p.IsClsCompliant ();
+ p.IsClsCompliant (ctx);
}
public Parameter this [int pos] {
get { return (Parameter) parameters [pos]; }
}
- public Expression CreateExpressionTree (EmitContext ec, Location loc)
+ public Expression CreateExpressionTree (BlockContext ec, Location loc)
{
- ArrayList initializers = new ArrayList (Count);
+ var initializers = new ArrayInitializer (Count, loc);
foreach (Parameter p in FixedParameters) {
//
// Each parameter expression is stored to local variable
// to save some memory when referenced later.
//
StatementExpression se = new StatementExpression (p.CreateExpressionTreeVariable (ec));
- if (se.Resolve (ec))
+ if (se.Resolve (ec)) {
+ ec.CurrentBlock.AddScopeStatement (new TemporaryVariableReference.Declarator (p.ExpressionTreeVariableReference ()));
ec.CurrentBlock.AddScopeStatement (se);
+ }
initializers.Add (p.ExpressionTreeVariableReference ());
}
return new ArrayCreation (
Parameter.ResolveParameterExpressionType (ec, loc),
- "[]", initializers, loc);
+ initializers, loc);
}
public ParametersCompiled Clone ()
return p;
}
}
+
+ //
+ // Default parameter value expression. We need this wrapper to handle
+ // default parameter values of folded constants when for indexer parameters
+ // The expression is resolved only once but applied to two methods which
+ // both share reference to this expression and we ensure that resolving
+ // this expression always returns same instance
+ //
+ public class DefaultParameterValueExpression : CompositeExpression
+ {
+ public DefaultParameterValueExpression (Expression expr)
+ : base (expr)
+ {
+ }
+
+ protected override Expression DoResolve (ResolveContext rc)
+ {
+ return base.DoResolve (rc);
+ }
+
+ public void Resolve (ResolveContext rc, Parameter p)
+ {
+ var expr = Resolve (rc);
+ if (expr == null)
+ return;
+
+ expr = Child;
+
+ if (!(expr is Constant || expr is DefaultValueExpression || (expr is New && ((New) expr).IsDefaultStruct))) {
+ rc.Report.Error (1736, Location,
+ "The expression being assigned to optional parameter `{0}' must be a constant or default value",
+ p.Name);
+
+ return;
+ }
+
+ var parameter_type = p.Type;
+ if (type == parameter_type)
+ return;
+
+ var res = Convert.ImplicitConversionStandard (rc, expr, parameter_type, Location);
+ if (res != null) {
+ if (TypeManager.IsNullableType (parameter_type) && res is Nullable.Wrap) {
+ Nullable.Wrap wrap = (Nullable.Wrap) res;
+ res = wrap.Child;
+ if (!(res is Constant)) {
+ rc.Report.Error (1770, Location,
+ "The expression being assigned to nullable optional parameter `{0}' must be default value",
+ p.Name);
+ return;
+ }
+ }
+
+ if (!expr.IsNull && TypeManager.IsReferenceType (parameter_type) && parameter_type != TypeManager.string_type) {
+ rc.Report.Error (1763, Location,
+ "Optional parameter `{0}' of type `{1}' can only be initialized with `null'",
+ p.Name, parameter_type.GetSignatureForError ());
+
+ return;
+ }
+
+ this.expr = res;
+ return;
+ }
+
+ rc.Report.Error (1750, Location,
+ "Optional parameter expression of type `{0}' cannot be converted to parameter type `{1}'",
+ type.GetSignatureForError (), parameter_type.GetSignatureForError ());
+ }
+ }
}
projects / mono.git / blobdiff