| public static CheckObjectCoercible ( Engine engine, Jint.Native.JsValue o ) : void | ||
| engine | Engine | |
| o | Jint.Native.JsValue | |
| Результат | void | |
/// <summary>
/// http://www.ecma-international.org/ecma-262/5.1/#sec-11.2.1
/// </summary>
/// <param name="memberExpression"></param>
/// <returns></returns>
public Reference EvaluateMemberExpression(MemberExpression memberExpression)
{
var baseReference = EvaluateExpression(memberExpression.Object);
var baseValue = _engine.GetValue(baseReference);
Expression expression = memberExpression.Property;
if (!memberExpression.Computed) // index accessor ?
{
expression = new Literal {
Type = SyntaxNodes.Literal, Value = memberExpression.Property.As <Identifier>().Name
};
}
var propertyNameReference = EvaluateExpression(expression);
var propertyNameValue = _engine.GetValue(propertyNameReference);
TypeConverter.CheckObjectCoercible(_engine, baseValue, memberExpression, baseReference);
var propertyNameString = TypeConverter.ToString(propertyNameValue);
return(new Reference(baseValue, propertyNameString, StrictModeScope.IsStrictModeCode));
}
/// <summary>
/// http://www.ecma-international.org/ecma-262/5.1/#sec-11.2.1
/// </summary>
/// <param name="memberExpression"></param>
/// <returns></returns>
public Reference EvaluateMemberExpression(MemberExpression memberExpression)
{
var baseReference = EvaluateExpression(memberExpression.Object);
var baseValue = _engine.GetValue(baseReference);
Expression expression = memberExpression.Property;
if (!memberExpression.Computed) // index accessor ?
{
expression = new Literal {
Type = SyntaxNodes.Literal, Value = memberExpression.Property.As <Identifier>().Name
};
}
var propertyNameReference = EvaluateExpression(expression);
var propertyNameValue = _engine.GetValue(propertyNameReference);
try
{
TypeConverter.CheckObjectCoercible(_engine, baseValue);
}
catch (Exception exception)
{
if (string.IsNullOrEmpty(exception.Message))
{
string undefinedObjectName = null;
string message = "Jint error";
try
{
switch (memberExpression.Object.Type)
{
case SyntaxNodes.MemberExpression:
if (memberExpression.Object.As <MemberExpression>().Property.Type.Equals(SyntaxNodes.Identifier))
{
undefinedObjectName = memberExpression.Object.As <MemberExpression>().Property.As <Identifier>().Name;
}
break;
case SyntaxNodes.Identifier:
undefinedObjectName = memberExpression.Object.As <Identifier>().Name;
break;
default:
break;
}
switch (memberExpression.Property.Type)
{
case SyntaxNodes.Identifier:
string undefinedPropertyName = memberExpression.Property.As <Identifier>().Name;
if (!string.IsNullOrEmpty(undefinedObjectName) && !string.IsNullOrEmpty(undefinedPropertyName))
{
message = string.Format("Could not evaluate property '{0}' of undefined object '{1}'", undefinedPropertyName, undefinedObjectName);
}
break;
case SyntaxNodes.Literal:
string undefinedLiteral = memberExpression.Property.As <Literal>().GetKey();
if (!string.IsNullOrEmpty(undefinedObjectName) && !string.IsNullOrEmpty(undefinedLiteral))
{
message = string.Format("Could not evaluate object '{1}' with literal {0}", undefinedLiteral, undefinedObjectName);
}
break;
default:
break;
}
}
catch
{
}
throw new JavaScriptException(_engine.TypeError, message);
}
throw exception;
}
var propertyNameString = TypeConverter.ToString(propertyNameValue);
return(new Reference(baseValue, propertyNameString, StrictModeScope.IsStrictModeCode));
}