internal ForeachMoveNextEdge(BoundBlock/*!*/source, BoundBlock/*!*/body, BoundBlock/*!*/end, ForeachEnumereeEdge/*!*/enumereeEdge, BoundReferenceExpression keyVar, BoundReferenceExpression/*!*/valueVar)
: base(source)
{
Contract.ThrowIfNull(body);
Contract.ThrowIfNull(end);
Contract.ThrowIfNull(enumereeEdge);
_body = body;
_end = end;
_enumereeEdge = enumereeEdge;
_keyVariable = keyVar;
_valueVariable = valueVar;
Connect(source);
}
internal void EmitGetCurrent(CodeGenerator cg, BoundReferenceExpression valueVar, BoundReferenceExpression keyVar)
{
Debug.Assert(_enumeratorLoc != null);
var enumeratorPlace = new LocalPlace(_enumeratorLoc);
if (valueVar is BoundListEx)
{
throw new NotImplementedException(); // TODO: list(vars) = enumerator.GetCurrent()
}
if (_currentValue != null && _currentKey != null)
{
// special PhpArray enumerator
if (keyVar != null)
{
//cg.EmitSequencePoint(keyVar.PhpSyntax);
var keyTarget = keyVar.BindPlace(cg);
keyTarget.EmitStorePrepare(cg);
keyTarget.EmitStore(cg, cg.EmitGetProperty(enumeratorPlace, _currentKey));
}
//cg.EmitSequencePoint(valueVar.PhpSyntax);
var valueTarget = valueVar.BindPlace(cg);
valueTarget.EmitStorePrepare(cg);
valueTarget.EmitStore(cg, cg.EmitGetProperty(enumeratorPlace, _currentValue));
}
else
{
Debug.Assert(_current != null);
if (keyVar != null)
{
throw new InvalidOperationException();
}
var valueTarget = valueVar.BindPlace(cg);
valueTarget.EmitStorePrepare(cg);
var t = cg.EmitGetProperty(enumeratorPlace, _current); // TOOD: PhpValue.FromClr
valueTarget.EmitStore(cg, t);
}
}
internal void EmitGetCurrent(CodeGenerator cg, BoundReferenceExpression valueVar, BoundReferenceExpression keyVar)
{
Debug.Assert(_enumeratorLoc != null);
var enumeratorPlace = new LocalPlace(_enumeratorLoc);
if (valueVar is BoundListEx)
{
throw new NotImplementedException(); // TODO: list(vars) = enumerator.GetCurrent()
}
if (_currentValue != null && _currentKey != null)
{
// special PhpArray enumerator
cg.EmitSequencePoint(valueVar.PhpSyntax);
var valueTarget = valueVar.BindPlace(cg);
valueTarget.EmitStorePrepare(cg);
valueTarget.EmitStore(cg, cg.EmitGetProperty(enumeratorPlace, _currentValue));
if (keyVar != null)
{
cg.EmitSequencePoint(keyVar.PhpSyntax);
var keyTarget = keyVar.BindPlace(cg);
keyTarget.EmitStorePrepare(cg);
keyTarget.EmitStore(cg, cg.EmitGetProperty(enumeratorPlace, _currentKey));
}
}
else
{
Debug.Assert(_current != null);
if (keyVar != null)
{
throw new InvalidOperationException();
}
cg.EmitSequencePoint(valueVar.PhpSyntax);
var valueTarget = valueVar.BindPlace(cg);
valueTarget.EmitStorePrepare(cg);
var t = cg.EmitGetProperty(enumeratorPlace, _current); // TOOD: PhpValue.FromClr
valueTarget.EmitStore(cg, t);
}
}
internal void EmitGetCurrent(CodeGenerator cg, BoundReferenceExpression valueVar, BoundReferenceExpression keyVar)
{
Debug.Assert(_enumeratorLoc.IsValid);
// NOTE: PHP writes first to {valueVar} then to {keyVar}
if (_currentValue != null && _currentKey != null)
{
// special PhpArray enumerator
cg.EmitSequencePoint(valueVar.PhpSyntax);
var valueTarget = valueVar.BindPlace(cg);
valueTarget.EmitStorePrepare(cg);
valueTarget.EmitStore(cg, cg.EmitGetProperty(_enumeratorLoc, _currentValue));
if (keyVar != null)
{
cg.EmitSequencePoint(keyVar.PhpSyntax);
var keyTarget = keyVar.BindPlace(cg);
keyTarget.EmitStorePrepare(cg);
keyTarget.EmitStore(cg, cg.EmitGetProperty(_enumeratorLoc, _currentKey));
}
}
else
{
Debug.Assert(_current != null);
Debug.Assert(_current.GetMethod != null);
var valuetype = _current.GetMethod.ReturnType;
// ValueTuple (key, value)
// TODO: KeyValuePair<key, value> // the same
if (valuetype.Name == "ValueTuple" && valuetype.IsValueType && ((NamedTypeSymbol)valuetype).Arity == 2)
{
// tmp = current;
var tmp = cg.GetTemporaryLocal(valuetype);
cg.EmitGetProperty(_enumeratorLoc, _current);
cg.Builder.EmitLocalStore(tmp);
// TODO: ValueTuple Helper
var item1 = valuetype.GetMembers("Item1").Single() as FieldSymbol;
var item2 = valuetype.GetMembers("Item2").Single() as FieldSymbol;
var item1place = new FieldPlace(new LocalPlace(tmp), item1, cg.Module);
var item2place = new FieldPlace(new LocalPlace(tmp), item2, cg.Module);
// value = tmp.Item2;
cg.EmitSequencePoint(valueVar.PhpSyntax);
var valueTarget = valueVar.BindPlace(cg);
valueTarget.EmitStorePrepare(cg);
valueTarget.EmitStore(cg, item2place.EmitLoad(cg.Builder));
// key = tmp.Item1;
if (keyVar != null)
{
cg.EmitSequencePoint(keyVar.PhpSyntax);
var keyTarget = keyVar.BindPlace(cg);
keyTarget.EmitStorePrepare(cg);
keyTarget.EmitStore(cg, item1place.EmitLoad(cg.Builder));
}
//
cg.ReturnTemporaryLocal(tmp);
}
// just a value
else
{
cg.EmitSequencePoint(valueVar.PhpSyntax);
var valueTarget = valueVar.BindPlace(cg);
valueTarget.EmitStorePrepare(cg);
var t = cg.EmitGetProperty(_enumeratorLoc, _current); // TOOD: PhpValue.FromClr
valueTarget.EmitStore(cg, t);
if (keyVar != null)
{
throw new InvalidOperationException();
}
}
}
}
internal void EmitGetCurrent(CodeGenerator cg, BoundReferenceExpression valueVar, BoundReferenceExpression keyVar)
{
Debug.Assert(_enumeratorLoc.IsValid);
// NOTE: PHP writes first to {valueVar} then to {keyVar}
if (_currentValue != null && _currentKey != null)
{
// PhpArray enumerator or Iterator
cg.EmitSequencePoint(valueVar.PhpSyntax);
valueVar.BindPlace(cg).EmitStore(cg, () => EmitGetCurrentHelper(cg), valueVar.TargetAccess());
if (keyVar != null)
{
cg.EmitSequencePoint(keyVar.PhpSyntax);
keyVar.BindPlace(cg).EmitStore(cg, () => VariableReferenceExtensions.EmitLoadValue(cg, _currentKey, _enumeratorLoc), keyVar.TargetAccess());
}
}
else
{
if (_current == null)
{
throw Roslyn.Utilities.ExceptionUtilities.UnexpectedValue(_current);
}
var valuetype = _current.ReturnType;
// ValueTuple<T1, T2> (Item1, Item2)
// KeyValuePair<TKey, TValue> (Key, Value)
if (IsAPairValue(valuetype, out var skey, out var svalue))
{
// tmp = current;
var tmp = cg.GetTemporaryLocal(valuetype);
VariableReferenceExtensions.EmitLoadValue(cg, _current, _enumeratorLoc);
cg.Builder.EmitLocalStore(tmp);
var tmploc = new LocalPlace(tmp);
var keyplace = skey switch
{
FieldSymbol fld => (IPlace) new FieldPlace(tmploc, fld, cg.Module),
PropertySymbol prop => new PropertyPlace(tmploc, prop, cg.Module),
_ => throw Roslyn.Utilities.ExceptionUtilities.Unreachable,
};
var valueplace = svalue switch
{
FieldSymbol fld => (IPlace) new FieldPlace(tmploc, fld, cg.Module),
PropertySymbol prop => new PropertyPlace(tmploc, prop, cg.Module),
_ => throw Roslyn.Utilities.ExceptionUtilities.Unreachable,
};
// value = tmp.Item2;
cg.EmitSequencePoint(valueVar.PhpSyntax);
valueVar.BindPlace(cg).EmitStore(cg, valueplace, valueVar.TargetAccess());
// key = tmp.Item1;
if (keyVar != null)
{
cg.EmitSequencePoint(keyVar.PhpSyntax);
keyVar.BindPlace(cg).EmitStore(cg, keyplace, keyVar.TargetAccess());
}
//
cg.ReturnTemporaryLocal(tmp);
}