public static Model.Expression ResolvePath(string path, string scope)
{
if (String.IsNullOrEmpty(path))
{
throw new ArgumentNullException("path");
}
Model.Expression result = null;
// Path may contain any number of member accessors and indexers
// e.g. code.coding[1]
while (true)
{
int firstIndex = path.IndexOfAny(new[] { '.', '[' });
if (firstIndex >= 0)
{
var memberName = path.Substring(0, firstIndex);
if (memberName != String.Empty)
{
result = BuildMemberAccessor(result, memberName, scope);
}
if (path[firstIndex] == '[')
{
var indexOfMatchingBracket = IndexOfMatchingBracket(path, firstIndex);
var indexPath = path.Substring(firstIndex + 1, indexOfMatchingBracket - (firstIndex + 1));
var indexExpression = ResolvePath(indexPath, scope);
// The use of .Get() here assumes the existence of appropriate list types with a Get method.
// This is a T-SQL specific solution to the representation of FHIR within SQL.
// Oracle would likely use a VARRAY, and PostgreSQL would use an array.
// Both those syntaxes would use an Indexer expression here, rather than a Get.
result = new Model.QualifierExpression(result, new Model.CallExpression("Get", new Model.Expression[] { indexExpression }));
if (indexOfMatchingBracket >= (path.Length - 1))
{
break;
}
path = path.Substring(indexOfMatchingBracket + 1);
}
else
{
path = path.Substring(firstIndex + 1);
}
}
else
{
result = BuildMemberAccessor(result, path, scope);
break;
}
}
return(result);
}
public static Model.Expression ResolvePath(string path, string scope)
{
if (String.IsNullOrEmpty(path))
{
throw new ArgumentNullException("path");
}
Model.Expression result = null;
// Path may contain any number of member accessors and indexers
// e.g. code.coding[1]
while (true)
{
int firstIndex = path.IndexOfAny(new[] { '.', '[' });
if (firstIndex >= 0)
{
var memberName = path.Substring(0, firstIndex);
if (memberName != String.Empty)
{
result = BuildMemberAccessor(result, memberName, scope);
}
if (path[firstIndex] == '[')
{
var indexOfMatchingBracket = IndexOfMatchingBracket(path, firstIndex);
var indexPath = path.Substring(firstIndex + 1, indexOfMatchingBracket - (firstIndex + 1));
var indexExpression = ResolvePath(indexPath, scope);
// The use of .Get() here assumes the existence of appropriate list types with a Get method.
// This is a T-SQL specific solution to the representation of FHIR within SQL.
// Oracle would likely use a VARRAY, and PostgreSQL would use an array.
// Both those syntaxes would use an Indexer expression here, rather than a Get.
result = new Model.QualifierExpression(result, new Model.CallExpression("Get", new Model.Expression[] { indexExpression }));
if (indexOfMatchingBracket >= (path.Length - 1))
{
break;
}
path = path.Substring(indexOfMatchingBracket + 1);
}
else
{
path = path.Substring(firstIndex + 1);
}
}
else
{
result = BuildMemberAccessor(result, path, scope);
break;
}
}
return result;
}
protected virtual void EmitQualifierExpression(QualifierExpression expression)
{
EmitExpression(expression.LeftExpression);
Append(".");
EmitExpression(expression.RightExpression);
}