Expression FromJSValue(AstType type, Expression expression)
{
var primitiveType = type as PrimitiveType;
TypeData enumType;
if (Types.TryGetType(type.ToString(), out enumType) && enumType.IsEnum)
{
primitiveType = enumType.DeclaredType.BaseType as PrimitiveType;
}
else
{
enumType = null;
}
string toMethod;
switch (primitiveType?.Keyword)
{
case "string":
toMethod = "ToNullableString";
break;
case "int":
toMethod = "ToInt32";
break;
case "uint":
case "ushort":
toMethod = "ToUInt32";
break;
case "bool":
toMethod = "ToBool";
break;
case "double":
toMethod = "ToDouble";
break;
default:
if (primitiveType != null)
{
throw new Exception($"unsupported primitive type: {primitiveType}");
}
return(new IdentifierExpression("Wrap")
{
TypeArguments = { type.Clone() }
}.Invoke(expression));
}
expression = new InvocationExpression(new MemberReferenceExpression(expression, toMethod));
return(enumType != null?expression.CastTo(type.Clone()) : expression);
}
