public static ImmutableArray <ParameterSymbol> MakeParameters(
Binder binder,
Symbol owner,
BaseParameterListSyntax syntax,
out SyntaxToken arglistToken,
BindingDiagnosticBag diagnostics,
bool allowRefOrOut,
bool allowThis,
bool addRefReadOnlyModifier
)
{
return(MakeParameters <ParameterSyntax, ParameterSymbol, Symbol>(
binder,
owner,
syntax.Parameters,
out arglistToken,
diagnostics,
allowRefOrOut,
allowThis,
addRefReadOnlyModifier,
suppressUseSiteDiagnostics: false,
lastIndex: syntax.Parameters.Count - 1,
parameterCreationFunc: (
Binder context,
Symbol owner,
TypeWithAnnotations parameterType,
ParameterSyntax syntax,
RefKind refKind,
int ordinal,
SyntaxToken paramsKeyword,
SyntaxToken thisKeyword,
bool addRefReadOnlyModifier,
BindingDiagnosticBag declarationDiagnostics
) =>
{
return SourceParameterSymbol.Create(
context,
owner,
parameterType,
syntax,
refKind,
syntax.Identifier,
ordinal,
isParams: paramsKeyword.Kind() != SyntaxKind.None,
isExtensionMethodThis: ordinal == 0 &&
thisKeyword.Kind() != SyntaxKind.None,
addRefReadOnlyModifier,
declarationDiagnostics
);
}
));
}
public static ImmutableArray <ParameterSymbol> MakeParameters(
Binder binder,
Symbol owner,
BaseParameterListSyntax syntax,
bool allowRefOrOut,
out SyntaxToken arglistToken,
DiagnosticBag diagnostics,
bool beStrict)
{
arglistToken = default(SyntaxToken);
int parameterIndex = 0;
int firstDefault = -1;
var builder = ArrayBuilder <ParameterSymbol> .GetInstance();
ImmutableArray <ParameterSymbol> parameters;
foreach (var parameterSyntax in syntax.Parameters)
{
SyntaxToken outKeyword;
SyntaxToken refKeyword;
SyntaxToken paramsKeyword;
SyntaxToken thisKeyword;
var refKind = GetModifiers(parameterSyntax.Modifiers, out outKeyword, out refKeyword, out paramsKeyword, out thisKeyword);
if (parameterSyntax.IsArgList)
{
arglistToken = parameterSyntax.Identifier;
// The native compiler produces "Expected type" here, in the parser. Roslyn produces
// the somewhat more informative "arglist not valid" error.
if (paramsKeyword.Kind() != SyntaxKind.None || outKeyword.Kind() != SyntaxKind.None ||
refKeyword.Kind() != SyntaxKind.None || thisKeyword.Kind() != SyntaxKind.None)
{
// CS1669: __arglist is not valid in this context
diagnostics.Add(ErrorCode.ERR_IllegalVarArgs, arglistToken.GetLocation());
}
continue;
}
if (parameterSyntax.Default != null && firstDefault == -1)
{
firstDefault = parameterIndex;
}
Debug.Assert(parameterSyntax.Type != null);
var parameterType = binder.BindType(parameterSyntax.Type, diagnostics);
if (!allowRefOrOut && (refKind != RefKind.None))
{
var outOrRefKeyword = (outKeyword.Kind() != SyntaxKind.None) ? outKeyword : refKeyword;
Debug.Assert(outOrRefKeyword.Kind() != SyntaxKind.None);
// error CS0631: ref and out are not valid in this context
diagnostics.Add(ErrorCode.ERR_IllegalRefParam, outOrRefKeyword.GetLocation());
}
var parameter = SourceParameterSymbol.Create(
binder,
owner,
parameterType,
parameterSyntax,
refKind,
parameterSyntax.Identifier,
parameterIndex,
(paramsKeyword.Kind() != SyntaxKind.None),
parameterIndex == 0 && thisKeyword.Kind() != SyntaxKind.None,
diagnostics,
beStrict);
ReportParameterErrors(owner, parameterSyntax, parameter, firstDefault, diagnostics);
builder.Add(parameter);
++parameterIndex;
}
parameters = builder.ToImmutableAndFree();
var methodOwner = owner as MethodSymbol;
var typeParameters = (object)methodOwner != null ?
methodOwner.TypeParameters :
default(ImmutableArray <TypeParameterSymbol>);
binder.ValidateParameterNameConflicts(typeParameters, parameters, diagnostics);
return(parameters);
}
public static ImmutableArray <ParameterSymbol> MakeParameters(
Binder binder,
Symbol owner,
BaseParameterListSyntax syntax,
out SyntaxToken arglistToken,
DiagnosticBag diagnostics,
bool allowRefOrOut,
bool allowThis,
bool addRefReadOnlyModifier)
{
arglistToken = default(SyntaxToken);
int parameterIndex = 0;
int firstDefault = -1;
var builder = ArrayBuilder <ParameterSymbol> .GetInstance();
var mustBeLastParameter = (ParameterSyntax)null;
foreach (var parameterSyntax in syntax.Parameters)
{
if (mustBeLastParameter == null)
{
if (parameterSyntax.Modifiers.Any(SyntaxKind.ParamsKeyword) ||
parameterSyntax.Identifier.Kind() == SyntaxKind.ArgListKeyword)
{
mustBeLastParameter = parameterSyntax;
}
}
CheckParameterModifiers(parameterSyntax, diagnostics);
var refKind = GetModifiers(parameterSyntax.Modifiers, out SyntaxToken refnessKeyword, out SyntaxToken paramsKeyword, out SyntaxToken thisKeyword);
if (thisKeyword.Kind() != SyntaxKind.None && !allowThis)
{
diagnostics.Add(ErrorCode.ERR_ThisInBadContext, thisKeyword.GetLocation());
}
if (parameterSyntax.IsArgList)
{
arglistToken = parameterSyntax.Identifier;
// The native compiler produces "Expected type" here, in the parser. Roslyn produces
// the somewhat more informative "arglist not valid" error.
if (paramsKeyword.Kind() != SyntaxKind.None ||
refnessKeyword.Kind() != SyntaxKind.None ||
thisKeyword.Kind() != SyntaxKind.None)
{
// CS1669: __arglist is not valid in this context
diagnostics.Add(ErrorCode.ERR_IllegalVarArgs, arglistToken.GetLocation());
}
continue;
}
if (parameterSyntax.Default != null && firstDefault == -1)
{
firstDefault = parameterIndex;
}
Debug.Assert(parameterSyntax.Type != null);
var parameterType = binder.BindType(parameterSyntax.Type, diagnostics);
if (!allowRefOrOut && (refKind == RefKind.Ref || refKind == RefKind.Out))
{
Debug.Assert(refnessKeyword.Kind() != SyntaxKind.None);
// error CS0631: ref and out are not valid in this context
diagnostics.Add(ErrorCode.ERR_IllegalRefParam, refnessKeyword.GetLocation());
}
var parameter = SourceParameterSymbol.Create(
binder,
owner,
parameterType,
parameterSyntax,
refKind,
parameterSyntax.Identifier,
parameterIndex,
(paramsKeyword.Kind() != SyntaxKind.None),
parameterIndex == 0 && thisKeyword.Kind() != SyntaxKind.None,
addRefReadOnlyModifier,
diagnostics);
ReportParameterErrors(owner, parameterSyntax, parameter, thisKeyword, paramsKeyword, firstDefault, diagnostics);
builder.Add(parameter);
++parameterIndex;
}
if (mustBeLastParameter != null && mustBeLastParameter != syntax.Parameters.Last())
{
diagnostics.Add(
mustBeLastParameter.Identifier.Kind() == SyntaxKind.ArgListKeyword
? ErrorCode.ERR_VarargsLast
: ErrorCode.ERR_ParamsLast,
mustBeLastParameter.GetLocation());
}
ImmutableArray <ParameterSymbol> parameters = builder.ToImmutableAndFree();
var methodOwner = owner as MethodSymbol;
var typeParameters = (object)methodOwner != null ?
methodOwner.TypeParameters :
default(ImmutableArray <TypeParameterSymbol>);
binder.ValidateParameterNameConflicts(typeParameters, parameters, diagnostics);
return(parameters);
}