public override DynamicMetaObject Bind(DynamicMetaObject target, DynamicMetaObject[] args) { bool hasTargetInstance = (target.LimitType != typeof(TargetTypeParam)); var bound = new CallSiteContext(!hasTargetInstance) { ClassContext = _classContext, Name = _name } .ProcessArgs(target, args, hasTargetInstance); if (hasTargetInstance) { var isobject = bound.TargetType != null; if (isobject == false) { var defaultexpr = ConvertExpression.BindDefault(_returnType); if (!_access.Quiet()) { // PhpException.VariableMisusedAsObject(target, _access.ReadRef) var throwcall = BinderHelpers.VariableMisusedAsObject(target.Expression, _access.EnsureAlias()); defaultexpr = Expression.Block(throwcall, defaultexpr); } return(new DynamicMetaObject(defaultexpr, bound.Restrictions)); } // instance := (T)instance bound.TargetInstance = Expression.Convert(bound.TargetInstance, bound.TargetType.Type); } Debug.Assert(IsClassConst ? (bound.TargetInstance == null) : true); // var getter = IsClassConst ? BinderHelpers.BindClassConstant(bound.TargetType, bound.ClassContext, bound.Name, bound.Context) : BinderHelpers.BindField(bound.TargetType, bound.ClassContext, bound.TargetInstance, bound.Name, bound.Context, _access, null); if (getter != null) { // return(new DynamicMetaObject(ConvertExpression.Bind(getter, _returnType, bound.Context), bound.Restrictions)); } if (IsClassConst) { // error: constant not defined // ... } // unreachable: property not found throw new InvalidOperationException($"{bound.TargetType.Name}::{bound.Name} could not be resolved."); }
public override DynamicMetaObject Bind(DynamicMetaObject target, DynamicMetaObject[] args) { bool hasTargetInstance = (target.LimitType != typeof(TargetTypeParam)); var bound = new CallSiteContext(!hasTargetInstance) { ClassContext = _classContext, Name = _name, } .ProcessArgs(target, args, hasTargetInstance); // if (hasTargetInstance) { var isobject = bound.TargetType != null; if (isobject == false) { // VariableMisusedAsObject return(new DynamicMetaObject( BinderHelpers.VariableMisusedAsObject(target.Expression, false), bound.Restrictions)); } // instance := (T)instance bound.TargetInstance = Expression.Convert(bound.TargetInstance, bound.TargetType.Type.AsType()); } // var setter = BinderHelpers.BindField(bound.TargetType, bound.ClassContext, bound.TargetInstance, bound.Name, bound.Context, _access, bound.Arguments.FirstOrDefault()); if (setter != null) { // return(new DynamicMetaObject(setter, bound.Restrictions)); } // field not found throw new NotImplementedException(); }