/// <summary>
/// Resolves the method if the expression was a member getter (obj.field or type::field).
/// </summary>
private void resolveGetMember(Context ctx, GetMemberNode node)
{
_InvocationSource = node.Expression;
var type = _InvocationSource != null
? _InvocationSource.Resolve(ctx)
: ctx.ResolveType(node.StaticType);
checkTypeInSafeMode(ctx, type);
if (node.TypeHints != null && node.TypeHints.Count > 0)
_TypeHints = node.TypeHints.Select(x => ctx.ResolveType(x, true)).ToArray();
try
{
// resolve a normal method
try
{
_Method = ctx.ResolveMethod(
type,
node.MemberName,
_ArgTypes,
_TypeHints,
(idx, types) => ctx.ResolveLambda(Arguments[idx] as LambdaNode, types)
);
if (_Method.IsStatic)
_InvocationSource = null;
return;
}
catch (KeyNotFoundException)
{
if (_InvocationSource == null)
throw;
}
// resolve a callable field
try
{
ctx.ResolveField(type, node.MemberName);
resolveExpression(ctx, node);
return;
}
catch (KeyNotFoundException) { }
// resolve a callable property
try
{
ctx.ResolveProperty(type, node.MemberName);
resolveExpression(ctx, node);
return;
}
catch (KeyNotFoundException) { }
Arguments = (Arguments[0] is UnitNode)
? new List<NodeBase> {_InvocationSource}
: new[] {_InvocationSource}.Union(Arguments).ToList();
var oldArgTypes = _ArgTypes;
_ArgTypes = Arguments.Select(a => a.Resolve(ctx)).ToArray();
_InvocationSource = null;
try
{
// resolve a local function that is implicitly used as an extension method
_Method = ctx.ResolveMethod(
ctx.MainType.TypeInfo,
node.MemberName,
_ArgTypes,
resolver: (idx, types) => ctx.ResolveLambda(Arguments[idx] as LambdaNode, types)
);
return;
}
catch (KeyNotFoundException) { }
// resolve a declared extension method
// most time-consuming operation, therefore is last checked
try
{
if(!ctx.Options.AllowExtensionMethods)
throw new KeyNotFoundException();
_Method = ctx.ResolveExtensionMethod(
type,
node.MemberName,
oldArgTypes,
_TypeHints,
(idx, types) => ctx.ResolveLambda(Arguments[idx] as LambdaNode, types)
);
}
catch (KeyNotFoundException)
{
var msg = node.StaticType != null
? CompilerMessages.TypeStaticMethodNotFound
: CompilerMessages.TypeMethodNotFound;
error(msg, type, node.MemberName);
}
}
catch (AmbiguousMatchException)
{
error(CompilerMessages.TypeMethodInvocationAmbiguous, type, node.MemberName);
}
}
/// <summary>
/// Resolves the method as a global function, imported property or a local variable with a delegate.
/// </summary>
private void resolveGetIdentifier(Context ctx, GetIdentifierNode node)
{
var nameInfo = ctx.Scope.FindLocal(node.Identifier);
if (nameInfo != null)
{
resolveExpression(ctx, node);
return;
}
try
{
_Method = ctx.ResolveMethod(
ctx.MainType.TypeInfo,
node.Identifier,
_ArgTypes,
resolver: (idx, types) => ctx.ResolveLambda(Arguments[idx] as LambdaNode, types)
);
if (_Method == null)
throw new KeyNotFoundException();
if(_ArgTypes.Length == 0 && node.Identifier.IsAnyOf(EntityNames.RunMethodName, EntityNames.EntryPointMethodName))
error(CompilerMessages.ReservedFunctionInvocation, node.Identifier);
}
catch (KeyNotFoundException)
{
error(CompilerMessages.FunctionNotFound, node.Identifier);
}
catch (AmbiguousMatchException)
{
error(CompilerMessages.FunctionInvocationAmbiguous, node.Identifier);
}
}
