/// <summary>
/// accessor_mbr = "." identifier [ type_args ]
/// </summary>
private GetMemberNode parseAccessorMbr()
{
if (!check(LexemType.Dot))
return null;
var node = new GetMemberNode();
node.MemberName = ensure(LexemType.Identifier, ParserMessages.MemberNameExpected).Value;
var args = attempt(parseTypeArgs);
if (args != null)
node.TypeHints = args;
return node;
}
/// <summary>
/// lvalue_stmbr_expr = type "::" identifier
/// </summary>
private GetMemberNode parseLvalueStmbrExpr()
{
var type = attempt(parseType);
if (type == null || !check(LexemType.DoubleСolon))
return null;
var node = new GetMemberNode();
node.StaticType = type;
node.MemberName = ensure(LexemType.Identifier, ParserMessages.MemberNameExpected).Value;
return node;
}
/// <summary>
/// invoke_pass = "******" identifier ( invoke_block_args | invoke_line_args )
/// </summary>
private InvocationNode parseInvokePass()
{
if (!check(LexemType.PassRight))
return null;
var getter = new GetMemberNode();
var invoker = new InvocationNode { Expression = getter };
getter.MemberName = ensure(LexemType.Identifier, ParserMessages.MemberNameExpected).Value;
invoker.Arguments = parseInvokeBlockArgs().ToList();
if (invoker.Arguments.Count == 0)
invoker.Arguments = parseInvokeLineArgs().ToList();
if (invoker.Arguments.Count == 0)
error(ParserMessages.ArgumentsExpected);
return invoker;
}
private void resolveGetMember(Context ctx, GetMemberNode node)
{
m_InvocationSource = node.Expression;
var type = m_InvocationSource != null
? m_InvocationSource.GetExpressionType(ctx)
: ctx.ResolveType(node.StaticType);
SafeModeCheckType(ctx, type);
if (node.TypeHints.Any())
m_TypeHints = node.TypeHints.Select(x => x.FullSignature == "_" ? null : ctx.ResolveType(x)).ToArray();
try
{
// resolve a normal method
try
{
m_Method = ctx.ResolveMethod(type, node.MemberName, m_ArgTypes, m_TypeHints);
if (m_Method.IsStatic)
m_InvocationSource = null;
return;
}
catch (KeyNotFoundException)
{
if (m_InvocationSource == null)
throw;
}
// resolve a callable field
try
{
ctx.ResolveField(type, node.MemberName);
resolveExpression(ctx, node);
return;
}
catch (KeyNotFoundException) { }
// resolve a callable field
try
{
ctx.ResolveProperty(type, node.MemberName);
resolveExpression(ctx, node);
return;
}
catch (KeyNotFoundException) { }
// resolve a local function that is implicitly used as an extension method
// move invocation source to arguments
if (Arguments[0] is UnitNode)
Arguments[0] = m_InvocationSource;
else
Arguments.Insert(0, m_InvocationSource);
var oldArgTypes = m_ArgTypes;
m_ArgTypes = Arguments.Select(a => a.GetExpressionType(ctx)).ToArray();
m_InvocationSource = null;
try
{
m_Method = ctx.ResolveMethod(ctx.MainType.TypeInfo, node.MemberName, m_ArgTypes);
}
catch (KeyNotFoundException)
{
// resolve a declared extension method
// most time-consuming operation, therefore is last checked
if(ctx.Options.AllowExtensionMethods)
m_Method = ctx.ResolveExtensionMethod(type, node.MemberName, oldArgTypes, m_TypeHints);
}
}
catch (AmbiguousMatchException)
{
Error(CompilerMessages.TypeMethodInvocationAmbiguous, type, node.MemberName);
}
catch (KeyNotFoundException)
{
var msg = node.StaticType != null
? CompilerMessages.TypeStaticMethodNotFound
: CompilerMessages.TypeMethodNotFound;
Error(msg, type, node.MemberName);
}
}
public void FieldWithTypeParameters()
{
var src = "Enumerable::Empty<int>";
var result = new GetMemberNode
{
StaticType = new TypeSignature("Enumerable"),
MemberName = "Empty",
TypeHints = { new TypeSignature("int") }
};
TestParser(src, result);
}
protected bool Equals(GetMemberNode other)
{
return base.Equals(other)
&& PointerRequired.Equals(other.PointerRequired)
&& RefArgumentRequired.Equals(other.RefArgumentRequired)
&& TypeHints.SequenceEqual(other.TypeHints);
}