// public static bool CompatibleSignatureToDelegate(this IMethodSymbol method, INamedTypeSymbol delegateType)
// {
// //Contract.ThrowIfFalse(delegateType.TypeKind == TypeKind.Delegate);
//
// var invoke = delegateType.DelegateInvokeMethod;
// if (invoke == null)
// {
// // It's possible to get events with no invoke method from metadata. We will assume
// // that no method can be an event handler for one.
// return false;
// }
//
// if (method.Parameters.Length != invoke.Parameters.Length)
// {
// return false;
// }
//
// if (method.ReturnsVoid != invoke.ReturnsVoid)
// {
// return false;
// }
//
// if (!method.ReturnType.InheritsFromOrEquals(invoke.ReturnType))
// {
// return false;
// }
//
// for (int i = 0; i < method.Parameters.Length; i++)
// {
// if (!invoke.Parameters[i].Type.InheritsFromOrEquals(method.Parameters[i].Type))
// {
// return false;
// }
// }
//
// return true;
// }
//
public static IMethodSymbol RenameTypeParameters(this IMethodSymbol method, IList <string> newNames)
{
if (method.TypeParameters.Select(t => t.Name).SequenceEqual(newNames))
{
return(method);
}
var typeGenerator = new TypeGenerator();
var updatedTypeParameters = RenameTypeParameters(
method.TypeParameters, newNames, typeGenerator);
var mapping = new Dictionary <ITypeSymbol, ITypeSymbol>();
for (int i = 0; i < method.TypeParameters.Length; i++)
{
mapping.Add(method.TypeParameters[i], updatedTypeParameters[i]);
}
return(CodeGenerationSymbolFactory.CreateMethodSymbol(
method.ContainingType,
method.GetAttributes(),
method.DeclaredAccessibility,
method.GetSymbolModifiers(),
method.ReturnType.SubstituteTypes(mapping, typeGenerator),
method.ExplicitInterfaceImplementations.FirstOrDefault(),
method.Name,
updatedTypeParameters,
method.Parameters.Select(p =>
CodeGenerationSymbolFactory.CreateParameterSymbol(p.GetAttributes(), p.RefKind, p.IsParams, p.Type.SubstituteTypes(mapping, typeGenerator), p.Name, p.IsOptional,
p.HasExplicitDefaultValue, p.HasExplicitDefaultValue ? p.ExplicitDefaultValue : null)).ToList()));
}
public static IMethodSymbol CreateAccessorSymbol(
IMethodSymbol accessor,
IList <AttributeData> attributes = null,
Accessibility?accessibility = null,
IMethodSymbol explicitInterfaceSymbol = null,
IList <SyntaxNode> statements = null)
{
return(CodeGenerationSymbolFactory.CreateMethodSymbol(
attributes,
accessibility ?? accessor.DeclaredAccessibility,
accessor.GetSymbolModifiers().WithIsAbstract(statements == null),
accessor.ReturnType,
explicitInterfaceSymbol ?? accessor.ExplicitInterfaceImplementations.FirstOrDefault(),
accessor.Name,
accessor.TypeParameters,
accessor.Parameters,
statements,
returnTypeAttributes: accessor.GetReturnTypeAttributes()));
}
public static IMethodSymbol CreateMethodSymbol(
IMethodSymbol method,
IList <AttributeData> attributes = null,
Accessibility?accessibility = null,
DeclarationModifiers?modifiers = null,
IMethodSymbol explicitInterfaceSymbol = null,
string name = null,
IList <SyntaxNode> statements = null)
{
return(CodeGenerationSymbolFactory.CreateMethodSymbol(
attributes,
accessibility ?? method.DeclaredAccessibility,
modifiers ?? method.GetSymbolModifiers(),
method.ReturnType,
explicitInterfaceSymbol,
name ?? method.Name,
method.TypeParameters,
method.Parameters,
statements,
returnTypeAttributes: method.GetReturnTypeAttributes()));
}
public static IMethodSymbol RenameParameters(this IMethodSymbol method, IList <string> parameterNames)
{
var parameterList = method.Parameters;
if (parameterList.Select(p => p.Name).SequenceEqual(parameterNames))
{
return(method);
}
var parameters = parameterList.RenameParameters(parameterNames);
return(CodeGenerationSymbolFactory.CreateMethodSymbol(
method.ContainingType,
method.GetAttributes(),
method.DeclaredAccessibility,
method.GetSymbolModifiers(),
method.ReturnType,
method.ExplicitInterfaceImplementations.FirstOrDefault(),
method.Name,
method.TypeParameters,
parameters));
}
public static IMethodSymbol RemoveAttributeFromParametersAndReturnType(
this IMethodSymbol method, INamedTypeSymbol attributeType,
IList <SyntaxNode> statements = null, IList <SyntaxNode> handlesExpressions = null)
{
if (attributeType == null)
{
return(method);
}
var someParameterHasAttribute = method.Parameters
.Any(m => m.GetAttributes().Any(a => a.AttributeClass.Equals(attributeType)));
var returnTypeHasAttribute = method.GetReturnTypeAttributes()
.Any(a => a.AttributeClass.Equals(attributeType));
if (!someParameterHasAttribute && !returnTypeHasAttribute)
{
return(method);
}
return(CodeGenerationSymbolFactory.CreateMethodSymbol(
method.ContainingType,
method.GetAttributes(),
method.DeclaredAccessibility,
method.GetSymbolModifiers(),
method.ReturnType,
method.ExplicitInterfaceImplementations.FirstOrDefault(),
method.Name,
method.TypeParameters,
method.Parameters.Select(p =>
CodeGenerationSymbolFactory.CreateParameterSymbol(
p.GetAttributes().Where(a => !a.AttributeClass.Equals(attributeType)).ToList(),
p.RefKind, p.IsParams, p.Type, p.Name, p.IsOptional,
p.HasExplicitDefaultValue, p.HasExplicitDefaultValue ? p.ExplicitDefaultValue : null)).ToList(),
statements,
handlesExpressions,
method.GetReturnTypeAttributes().Where(a => !a.AttributeClass.Equals(attributeType)).ToList()));
}
