public static Et EtToBoolean(Meta obj)
{
if (obj.HasValue && obj.Value == null)
return Et.Constant(false, typeof(bool));
if (obj.LimitType == typeof(bool))
return Et.Convert(obj.Expression, typeof(bool));
if (obj.LimitType == typeof(double))
return Et.GreaterThan(
Et.Convert(obj.Expression, typeof(double)),
Et.Constant(0.0, typeof(double))
);
if (obj.LimitType == typeof(Js.Undefined))
return Et.Constant(false, typeof(bool));
if (obj.LimitType == typeof(string))
return Et.GreaterThan(
Et.Property(
Et.Convert(
obj.Expression,
typeof(string)
),
"Length"
),
Et.Constant(0, typeof(int))
);
// last step
return Et.Constant(true, typeof(bool));
}
/// <summary>
///
/// </summary>
/// <param name="target"></param>
/// <param name="args"></param>
/// <param name="instanceRestrict"></param>
/// <returns></returns>
internal static Restrict2 BuildCallRestrictions(Meta2 target, Meta2[] args, RestrictFlag flag)
{
var restrictions =
target.Restrictions.Merge(
Restrict2.Combine(args)
);
if (flag == RestrictFlag.Instance)
{
restrictions =
restrictions.Merge(
Restrict2.GetInstanceRestriction(
target.Expression,
target.Value
)
);
}
else
{
restrictions =
restrictions.Merge(
Restrict2.GetTypeRestriction(
target.Expression,
target.LimitType
)
);
}
for (var i = 0; i < args.Length; ++i)
{
Restrict2 restr;
// HasValue and Value == null, means we have a null value
if (args[i].HasValue && args[i].Value == null)
{
restr =
Restrict2.GetInstanceRestriction(
args[i].Expression,
null
);
}
else
{
restr =
Restrict2.GetTypeRestriction(
args[i].Expression,
args[i].LimitType
);
}
restrictions = restrictions.Merge(restr);
}
return restrictions;
}
internal static Restrict2 GetNullHandledTypeRestriction(Meta2 target)
{
if (target.HasValue && target.Value == null)
return Restrict2.GetInstanceRestriction(
target.Expression,
null
);
return Restrict2.GetTypeRestriction(
target.Expression,
target.LimitType
);
}
System.Dynamic.DynamicMetaObject CallMethod(
MethodInfo method,
System.Linq.Expressions.Expression[] parameters
)
{
var callMethod = new System.Dynamic.DynamicMetaObject(
System.Linq.Expressions.Expression.Call(
System.Linq.Expressions.Expression.Convert(Expression, LimitType),
method,
parameters),
System.Dynamic.BindingRestrictions.GetTypeRestriction(Expression, LimitType)
);
return callMethod;
}
public static bool NeedsToDefer(Meta target, Meta[] args, out Meta[] result)
{
if (!target.HasValue)
goto Defer;
for (int i = 0; i < args.Length; ++i)
{
if (!args[i].HasValue)
goto Defer;
}
result = null;
return false;
Defer:
result = ArrayUtils.Insert(target, args);
return true;
}
public virtual System.Dynamic.DynamicMetaObject BindBinaryOperation(System.Dynamic.BinaryOperationBinder binder, System.Dynamic.DynamicMetaObject arg)
{
return(default(System.Dynamic.DynamicMetaObject));
}
public System.Dynamic.DynamicMetaObject FallbackDeleteMember(System.Dynamic.DynamicMetaObject target)
{
return(default(System.Dynamic.DynamicMetaObject));
}
public System.Dynamic.DynamicMetaObject FallbackDeleteIndex(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject[] indexes)
{
return(default(System.Dynamic.DynamicMetaObject));
}
public System.Dynamic.DynamicMetaObject FallbackCreateInstance(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject[] args)
{
return(default(System.Dynamic.DynamicMetaObject));
}
public System.Dynamic.DynamicMetaObject FallbackConvert(System.Dynamic.DynamicMetaObject target)
{
return(default(System.Dynamic.DynamicMetaObject));
}
public abstract System.Dynamic.DynamicMetaObject FallbackBinaryOperation(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject arg, System.Dynamic.DynamicMetaObject errorSuggestion);
public System.Dynamic.DynamicMetaObject FallbackInvokeMember(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject[] args)
{
throw null;
}
public System.Dynamic.DynamicMetaObject FallbackGetMember(System.Dynamic.DynamicMetaObject target)
{
throw null;
}
public static Et EtToNumber(Meta obj)
{
if (obj.HasValue == true & obj.Value == null)
return Et.Constant(0.0D, typeof(double));
//TODO: handle all .NET number types
if (obj.LimitType == typeof(double))
return Et.Convert(obj.Expression, typeof(double));
if (obj.LimitType == typeof(Js.Undefined))
return Et.Constant(double.NaN, typeof(double));
if (obj.LimitType == typeof(bool))
return Et.Condition(
Et.Convert(obj.Expression, typeof(bool)),
Et.Constant(1.0, typeof(double)),
Et.Constant(0.0, typeof(double)),
typeof(double)
);
if (obj.LimitType == typeof(string))
{
var tmp = Et.Parameter(typeof(double), "#tmp");
var method = typeof(double).GetMethod(
"TryParse",
new[] {
typeof(string),
typeof(NumberStyles),
typeof(IFormatProvider),
typeof(double).MakeByRefType()
}
);
return Et.Block(
new[] { tmp },
Et.Condition(
Et.Call(
method,
Et.Convert(obj.Expression, typeof(string)),
Et.Constant(NumberStyles.Any, typeof(NumberStyles)),
Et.Constant(CultureInfo.InvariantCulture, typeof(IFormatProvider)),
tmp
),
tmp,
Et.Constant(double.NaN, typeof(double))
)
);
}
if (typeof(IObj).IsAssignableFrom(obj.LimitType))
return EtUtils.Cast<double>(
Et.Call(
Et.Convert(obj.Expression, typeof(Js.IObj)),
IObjMethods.MiDefaultValue,
Et.Constant(ValueHint.Number)
)
);
return Et.Constant(1.0, typeof(double));
}
public virtual System.Dynamic.DynamicMetaObject BindSetIndex(System.Dynamic.SetIndexBinder binder, System.Dynamic.DynamicMetaObject[] indexes, System.Dynamic.DynamicMetaObject value)
{
return(default(System.Dynamic.DynamicMetaObject));
}
public System.Dynamic.DynamicMetaObject FallbackSetIndex(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject[] indexes, System.Dynamic.DynamicMetaObject value)
{
throw null;
}
public abstract System.Dynamic.DynamicMetaObject Bind(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject[] args);
public System.Dynamic.DynamicMetaObject FallbackSetMember(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject value)
{
throw null;
}
public static Et EtToString(Meta obj)
{
if (obj.LimitType == typeof(string))
return Et.Convert(obj.Expression, typeof(string));
if (obj.LimitType == typeof(double))
return Et.Condition(
Et.Call(
typeof(double).GetMethod("IsInfinity"),
Et.Convert(obj.Expression, typeof(double))
),
Et.Constant("Infinity", typeof(string)),
Et.Call(
obj.Expression,
typeof(object).GetMethod("ToString")
),
typeof(string)
);
if (obj.LimitType == typeof(Js.Undefined))
return Et.Constant("undefined", typeof(string));
if (obj.Value == null)
return Et.Constant("null", typeof(string));
if (obj.LimitType == typeof(bool))
return Et.Condition(
Et.Convert(obj.Expression, typeof(bool)),
Et.Constant("true", typeof(string)),
Et.Constant("false", typeof(string)),
typeof(string)
);
if (typeof(IObj).IsAssignableFrom(obj.LimitType))
return EtUtils.Cast<string>(
Et.Call(
Et.Convert(obj.Expression, typeof(Js.IObj)),
IObjMethods.MiDefaultValue,
Et.Constant(ValueHint.String)
)
);
// last step, just ToString
return Et.Call(
obj.Expression,
typeof(object).GetMethod("ToString")
);
}
public sealed override System.Dynamic.DynamicMetaObject Bind(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject[] args)
{
throw null;
}
public override System.Dynamic.DynamicMetaObject BindSetMember(System.Dynamic.SetMemberBinder binder, System.Dynamic.DynamicMetaObject value)
{
var parameters = new System.Linq.Expressions.Expression[]
{
System.Linq.Expressions.Expression.Constant(binder.Name),
value.Expression,
};
var callMethod = CallMethod(setValueMethod, parameters);
return(callMethod);
}
public System.Dynamic.DynamicMetaObject FallbackUnaryOperation(System.Dynamic.DynamicMetaObject target)
{
throw null;
}
public abstract System.Dynamic.DynamicMetaObject FallbackConvert(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject errorSuggestion);
public override System.Dynamic.DynamicMetaObject FallbackInvokeMember(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject[] args, System.Dynamic.DynamicMetaObject errorSuggestion)
{
return(null);
}
public abstract System.Dynamic.DynamicMetaObject FallbackCreateInstance(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject[] args, System.Dynamic.DynamicMetaObject errorSuggestion);
public override System.Dynamic.DynamicMetaObject FallbackSetMember(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject value, System.Dynamic.DynamicMetaObject errorSuggestion)
{
return(null);
}
public abstract System.Dynamic.DynamicMetaObject FallbackDeleteIndex(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject[] indexes, System.Dynamic.DynamicMetaObject errorSuggestion);
public System.Dynamic.DynamicMetaObject FallbackInvokeMember(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject[] args)
{
return(default(System.Dynamic.DynamicMetaObject));
}
public abstract System.Dynamic.DynamicMetaObject FallbackDeleteMember(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject errorSuggestion);
public abstract System.Dynamic.DynamicMetaObject FallbackInvokeMember(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject[] args, System.Dynamic.DynamicMetaObject errorSuggestion);
public System.Dynamic.DynamicMetaObject FallbackBinaryOperation(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject arg)
{
return(default(System.Dynamic.DynamicMetaObject));
}
public System.Dynamic.DynamicMetaObject FallbackSetIndex(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject[] indexes, System.Dynamic.DynamicMetaObject value)
{
return(default(System.Dynamic.DynamicMetaObject));
}
public virtual System.Dynamic.DynamicMetaObject BindSetMember(System.Dynamic.SetMemberBinder binder, System.Dynamic.DynamicMetaObject value)
{
return(default(System.Dynamic.DynamicMetaObject));
}
public System.Dynamic.DynamicMetaObject FallbackSetMember(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject value)
{
return(default(System.Dynamic.DynamicMetaObject));
}
public System.Dynamic.DynamicMetaObject Defer(System.Dynamic.DynamicMetaObject target, params System.Dynamic.DynamicMetaObject[] args)
{
return(default(System.Dynamic.DynamicMetaObject));
}
public abstract System.Dynamic.DynamicMetaObject FallbackSetMember(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject value, System.Dynamic.DynamicMetaObject errorSuggestion);
public sealed override System.Dynamic.DynamicMetaObject Bind(System.Dynamic.DynamicMetaObject target, System.Dynamic.DynamicMetaObject[] args)
{
return(default(System.Dynamic.DynamicMetaObject));
}
public static Et EtToObject(Meta obj, Context context)
{
if (obj.LimitType == typeof(Js.Undefined) || (obj.HasValue && obj.Value == null))
throw new ShouldThrowTypeError();
if (obj.LimitType == typeof(double))
return Et.Call(
Et.Constant(context, typeof(Context)),
Context.MiCreateNumber,
Et.Convert(obj.Expression, typeof(object))
);
if (obj.LimitType == typeof(string))
return Et.Call(
Et.Constant(context, typeof(Context)),
Context.MiCreateString,
Et.Convert(obj.Expression, typeof(object))
);
if (obj.LimitType == typeof(bool))
return Et.Call(
Et.Constant(context, typeof(Context)),
Context.MiCreateBoolean,
Et.Convert(obj.Expression, typeof(object))
);
return obj.Expression;
}
