public void SetValue(IScriptExpressionNameResolver nameResolver, object value)
{
BindingFlags flags = BindingFlags.FlattenHierarchy |
BindingFlags.Public |
BindingFlags.Instance;
object obj = nameResolver.ResolveName(_parts[0]);
for (int i = 1; i < _parts.Length; i++) {
PropertyInfo pi = obj.GetType().GetProperty(_parts[i], flags);
if (pi != null) {
if (i == _parts.Length - 1) {
if ((value == null) || (pi.PropertyType.IsAssignableFrom(value.GetType()) == false)) {
value = Convert.ChangeType(value, pi.PropertyType, CultureInfo.CurrentCulture);
}
pi.SetValue(obj, value, null);
}
else {
obj = pi.GetValue(obj, null);
}
}
else {
throw new InvalidOperationException("Unknown property '" + _parts[i] + "'");
}
}
}
public object GetValue(IScriptExpressionNameResolver nameResolver)
{
object value = nameResolver.ResolveName(_parts[0]);
if (_parts.Length != 1) {
BindingFlags flags = BindingFlags.FlattenHierarchy |
BindingFlags.Public |
BindingFlags.Instance;
for (int i = 1; i < _parts.Length; i++) {
PropertyInfo pi = value.GetType().GetProperty(_parts[i], flags);
if (pi != null) {
value = pi.GetValue(value, null);
}
else {
throw new InvalidOperationException("Unknown property '" + _parts[i] + "'");
}
}
}
return value;
}
public object GetValue(IScriptExpressionNameResolver nameResolver)
{
return _value;
}
public object GetValue(IScriptExpressionNameResolver nameResolver)
{
object value = null;
BindingFlags flags = BindingFlags.FlattenHierarchy |
BindingFlags.Public |
BindingFlags.Instance;
object obj = nameResolver.ResolveName(_parts[0]);
for (int i = 1; i < _parts.Length; i++) {
if (i == _parts.Length - 1) {
MethodInfo mi = obj.GetType().GetMethod(_parts[i], flags);
if (mi == null) {
throw new InvalidOperationException("Unknown method '" + _parts[i] + "'");
}
object[] paramValues = null;
if (_parameters != null) {
ParameterInfo[] paramInfos = mi.GetParameters();
if (_parameters.Count != paramInfos.Length) {
throw new InvalidOperationException("Parameter count mismatch for method '" + _parts[i] + "'");
}
paramValues = new object[_parameters.Count];
for (int j = 0; j < paramValues.Length; j++) {
object paramValue = _parameters[j].GetValue(nameResolver);
if ((paramValue == null) || (paramInfos[j].ParameterType.IsAssignableFrom(paramValue.GetType()) == false)) {
paramValue = Convert.ChangeType(paramValue, paramInfos[j].ParameterType, CultureInfo.CurrentCulture);
}
paramValues[j] = paramValue;
}
}
value = mi.Invoke(obj, paramValues);
}
else {
PropertyInfo pi = obj.GetType().GetProperty(_parts[i], flags);
if (pi != null) {
obj = pi.GetValue(obj, null);
}
else {
throw new InvalidOperationException("Unknown property '" + _parts[i] + "'");
}
}
}
return value;
}
/// <summary>
/// Executes a script expression.
/// </summary>
/// <param name="nameResolver">An object that can resolve names in the script expression to object instances.</param>
/// <returns>The resulting value from executing the expression if any.</returns>
public object Execute(IScriptExpressionNameResolver nameResolver)
{
object value = _rhs.GetValue(nameResolver);
if (_lhs != null) {
((PropertyAccessExpression)_lhs).SetValue(nameResolver, value);
}
return value;
}
