internal Scope(ExecutionBuilder.Scope outer, ParameterExpression fieldReader, TableAlias alias, IEnumerable <ColumnDeclaration> columns)
{
this.outer = outer;
this.fieldReader = fieldReader;
this.Alias = alias;
//this.nameMap = columns.Select(((Func<ColumnDeclaration, int, <>f__AnonymousType0<ColumnDeclaration, int>>) ((c, i) => new { c = c, i = i }))).ToDictionary(x => x.c.Name, x => x.i);
}
internal bool TryGetValue(ColumnExpression column, out ParameterExpression fieldReader, out int ordinal)
{
for (ExecutionBuilder.Scope scope = this; scope != null; scope = scope.outer)
{
if ((column.Alias == scope.Alias) && this.nameMap.TryGetValue(column.Name, out ordinal))
{
fieldReader = this.fieldReader;
return(true);
}
}
fieldReader = null;
ordinal = 0;
return(false);
}