|
public Lookup ( Microsoft.CSharp.RuntimeBinder.Semantics.CSemanticChecker checker, |
||
| checker | Microsoft.CSharp.RuntimeBinder.Semantics.CSemanticChecker | |
| typeSrc | ||
| obj | ||
| symWhere | Microsoft.CSharp.RuntimeBinder.Semantics.ParentSymbol | |
| name | ||
| arity | int | |
| flags | MemLookFlags | |
| 리턴 | bool | |
/////////////////////////////////////////////////////////////////////////////////
internal SymWithType LookupMember(
string name,
EXPR callingObject,
ParentSymbol context,
int arity,
MemberLookup mem,
bool allowSpecialNames,
bool requireInvocable)
{
CType type = callingObject.type;
if (type.IsArrayType())
{
type = _semanticChecker.GetSymbolLoader().GetReqPredefType(PredefinedType.PT_ARRAY);
}
if (type.IsNullableType())
{
type = type.AsNullableType().GetAts(_semanticChecker.GetSymbolLoader().GetErrorContext());
}
if (!mem.Lookup(
_semanticChecker,
type,
callingObject,
context,
GetName(name),
arity,
MemLookFlags.TypeVarsAllowed |
(allowSpecialNames ? 0 : MemLookFlags.UserCallable) |
(name == SpecialNames.Indexer ? MemLookFlags.Indexer : 0) |
(name == SpecialNames.Constructor ? MemLookFlags.Ctor : 0) |
(requireInvocable ? MemLookFlags.MustBeInvocable : 0)))
{
return null;
}
return mem.SwtFirst();
}
protected EXPR bindIndexer(EXPR pObject, EXPR args, BindingFlag bindFlags)
{
CType type = pObject.type;
if (!type.IsAggregateType() && !type.IsTypeParameterType())
{
ErrorContext.Error(ErrorCode.ERR_BadIndexLHS, type);
MethWithInst mwi = new MethWithInst(null, null);
EXPRMEMGRP pMemGroup = GetExprFactory().CreateMemGroup(pObject, mwi);
EXPRCALL rval = GetExprFactory().CreateCall(0, type, args, pMemGroup, null);
rval.SetError();
return rval;
}
Name pName = GetSymbolLoader().GetNameManager().GetPredefName(PredefinedName.PN_INDEXERINTERNAL);
MemberLookup mem = new MemberLookup();
if (!mem.Lookup(GetSemanticChecker(), type, pObject, ContextForMemberLookup(), pName, 0,
(bindFlags & BindingFlag.BIND_BASECALL) != 0 ? (MemLookFlags.BaseCall | MemLookFlags.Indexer) : MemLookFlags.Indexer))
{
mem.ReportErrors();
type = GetTypes().GetErrorSym();
Symbol pSymbol = null;
if (mem.SwtInaccessible().Sym != null)
{
Debug.Assert(mem.SwtInaccessible().Sym.IsMethodOrPropertySymbol());
type = mem.SwtInaccessible().MethProp().RetType;
pSymbol = mem.SwtInaccessible().Sym;
}
EXPRMEMGRP memgrp = null;
if (pSymbol != null)
{
memgrp = GetExprFactory().CreateMemGroup((EXPRFLAG)mem.GetFlags(),
pName, BSYMMGR.EmptyTypeArray(), pSymbol.getKind(), mem.GetSourceType(), null/*pMPS*/, mem.GetObject(), mem.GetResults());
memgrp.SetInaccessibleBit();
}
else
{
MethWithInst mwi = new MethWithInst(null, null);
memgrp = GetExprFactory().CreateMemGroup(mem.GetObject(), mwi);
}
EXPRCALL rval = GetExprFactory().CreateCall(0, type, args, memgrp, null);
rval.SetError();
return rval;
}
Debug.Assert(mem.SymFirst().IsPropertySymbol() && mem.SymFirst().AsPropertySymbol().isIndexer());
EXPRMEMGRP grp = GetExprFactory().CreateMemGroup((EXPRFLAG)mem.GetFlags(),
pName, BSYMMGR.EmptyTypeArray(), mem.SymFirst().getKind(), mem.GetSourceType(), null/*pMPS*/, mem.GetObject(), mem.GetResults());
EXPR pResult = BindMethodGroupToArguments(bindFlags, grp, args);
Debug.Assert(pResult.HasObject());
if (pResult.getObject() == null)
{
// We must be in an error scenario where the object was not allowed.
// This can happen if the user tries to access the indexer off the
// type and not an instance or if the incorrect type/number of arguments
// were passed for binding.
pResult.SetObject(pObject);
pResult.SetError();
}
return pResult;
}