private BoundExpression MakeIndexerAccess(
SyntaxNode syntax,
BoundExpression rewrittenReceiver,
PropertySymbol indexer,
ImmutableArray <BoundExpression> rewrittenArguments,
ImmutableArray <string> argumentNamesOpt,
ImmutableArray <RefKind> argumentRefKindsOpt,
bool expanded,
ImmutableArray <int> argsToParamsOpt,
TypeSymbol type,
BoundIndexerAccess oldNodeOpt,
bool isLeftOfAssignment)
{
if (isLeftOfAssignment && indexer.RefKind == RefKind.None)
{
// This is an indexer set access. We return a BoundIndexerAccess node here.
// This node will be rewritten with MakePropertyAssignment when rewriting the enclosing BoundAssignmentOperator.
return(oldNodeOpt != null?
oldNodeOpt.Update(rewrittenReceiver, indexer, rewrittenArguments, argumentNamesOpt, argumentRefKindsOpt, expanded, argsToParamsOpt, null, isLeftOfAssignment, type) :
new BoundIndexerAccess(syntax, rewrittenReceiver, indexer, rewrittenArguments, argumentNamesOpt, argumentRefKindsOpt, expanded, argsToParamsOpt, null, isLeftOfAssignment, type));
}
else
{
var getMethod = indexer.GetOwnOrInheritedGetMethod();
Debug.Assert((object)getMethod != null);
// We have already lowered each argument, but we may need some additional rewriting for the arguments,
// such as generating a params array, re-ordering arguments based on argsToParamsOpt map, inserting arguments for optional parameters, etc.
ImmutableArray <LocalSymbol> temps;
rewrittenArguments = MakeArguments(
syntax,
rewrittenArguments,
indexer,
getMethod,
expanded,
argsToParamsOpt,
ref argumentRefKindsOpt,
out temps,
enableCallerInfo: ThreeState.True);
BoundExpression call = MakePropertyGetAccess(syntax, rewrittenReceiver, indexer, rewrittenArguments, getMethod);
if (temps.IsDefaultOrEmpty)
{
return(call);
}
else
{
return(new BoundSequence(
syntax,
temps,
ImmutableArray <BoundExpression> .Empty,
call,
type));
}
}
}
private BoundExpression MakeIndexerAccess(
SyntaxNode syntax,
BoundExpression rewrittenReceiver,
PropertySymbol indexer,
ImmutableArray <BoundExpression> rewrittenArguments,
ImmutableArray <string> argumentNamesOpt,
ImmutableArray <RefKind> argumentRefKindsOpt,
bool expanded,
ImmutableArray <int> argsToParamsOpt,
TypeSymbol type,
BoundIndexerAccess oldNodeOpt,
bool isLeftOfAssignment)
{
// check for System.Array.[Length|LongLength] on a single dimensional array,
// we have a special node for such cases.
if (rewrittenReceiver != null && rewrittenReceiver.Type.IsArray() && !isLeftOfAssignment)
{
// NOTE: we are not interested in potential badness of Array.Length property.
// If it is bad reference compare will not succeed.
var specialIndexer = _compilation.GetSpecialTypeMember(SpecialMember.core_Array_T__item);
if (ReferenceEquals(indexer.OriginalDefinition, specialIndexer))
{
return(new BoundArrayAccess(syntax, rewrittenReceiver, rewrittenArguments[0], indexer.Type.TypeSymbol));
}
}
if (isLeftOfAssignment && indexer.RefKind == RefKind.None)
{
// This is an indexer set access. We return a BoundIndexerAccess node here.
// This node will be rewritten with MakePropertyAssignment when rewriting the enclosing BoundAssignmentOperator.
return(oldNodeOpt != null?
oldNodeOpt.Update(rewrittenReceiver, indexer, rewrittenArguments, argumentNamesOpt, argumentRefKindsOpt, expanded, argsToParamsOpt, null, isLeftOfAssignment, type) :
new BoundIndexerAccess(syntax, rewrittenReceiver, indexer, rewrittenArguments, argumentNamesOpt, argumentRefKindsOpt, expanded, argsToParamsOpt, null, isLeftOfAssignment, type));
}
else
{
var getMethod = indexer.GetOwnOrInheritedGetMethod();
Debug.Assert((object)getMethod != null);
// We have already lowered each argument, but we may need some additional rewriting for the arguments,
// such as generating a params array, re-ordering arguments based on argsToParamsOpt map, inserting arguments for optional parameters, etc.
ImmutableArray <LocalSymbol> temps;
rewrittenArguments = MakeArguments(
syntax,
rewrittenArguments,
indexer,
getMethod,
expanded,
argsToParamsOpt,
ref argumentRefKindsOpt,
out temps,
enableCallerInfo: ThreeState.True);
BoundExpression call = MakePropertyGetAccess(syntax, rewrittenReceiver, indexer, rewrittenArguments, getMethod);
if (temps.IsDefaultOrEmpty)
{
return(call);
}
else
{
return(new BoundSequence(
syntax,
temps,
ImmutableArray <BoundExpression> .Empty,
call,
type));
}
}
}