public BoundExpression GetOrCreateBoundExpression(IBindingContext binder, BoundExpressionOptions options)
{
Require.NotNull(binder, "binder");
Require.NotNull(options, "options");
var key = new CacheKey(
_dynamicExpression.ParseResult.Identifiers,
!DynamicExpression.IsLanguageCaseSensitive(_dynamicExpression.Language),
binder,
options
);
lock (_syncRoot)
{
if (!_cache.TryGetValue(key, out var boundExpression))
{
boundExpression = new BoundExpression(
_dynamicExpression,
key.OwnerType,
key.Imports,
key.IdentifierTypes,
key.Options
);
_cache.Add(key, boundExpression);
}
return(boundExpression);
}
}
public object Invoke(IExecutionContext executionContext)
{
bool hadExecutionContext = executionContext != null;
if (executionContext == null)
{
executionContext = new ExpressionContext();
}
var parameters = new object[_parameterMap.Length];
bool ignoreCase = !DynamicExpression.IsLanguageCaseSensitive(_dynamicExpression.Language);
var identifiers = _dynamicExpression.ParseResult.Identifiers;
for (int i = 0; i < parameters.Length; i++)
{
int index = _parameterMap[i];
if (index == -1)
{
if (!hadExecutionContext)
{
throw new ExpressionsException(
"An owner was expected but no execution context has been provided",
ExpressionsExceptionType.InvalidOperation
);
}
parameters[i] = executionContext.Owner;
}
else
{
parameters[i] = executionContext.GetVariableValue(
identifiers[index].Name, ignoreCase
);
}
}
return(_compiledMethod(parameters));
}