/// <summary>
/// Verify whether the FunctionElement instance is unique in a set of FunctionElement instance.
/// </summary>
/// <param name="functionElement">A FunctionElement instance.</param>
/// <param name="functionElements">A set of FunctionElement instances.</param>
/// <param name="type">The type of verified parameter type (Distinguish with an unordered set Of parameter names and an ordered set of parameter types.).</param>
/// <returns>Returns the verification result.</returns>
public static bool Unique(FunctionElement functionElement, IEnumerable <FunctionElement> functionElements, VerifiedParamType type)
{
int counter = 0;
foreach (var functionElem in functionElements)
{
if (functionElement.name != functionElem.name)
{
continue;
}
if (functionElement.isBound != functionElem.isBound)
{
continue;
}
if (functionElement.bindingParamName != functionElem.bindingParamName)
{
continue;
}
if (functionElement.parameters.Count != functionElem.parameters.Count)
{
continue;
}
// Verify the unordered set of non-binding parameter names and the ordered set of parameter types.
bool flag = true;
for (int i = 0; i < functionElement.parameters.Count; i++)
{
if (type == VerifiedParamType.UnorderedSetOfParamNames || type == VerifiedParamType.All)
{
if (!functionElem.parameters.Contains(functionElement.parameters[i]))
{
flag = false;
break;
}
}
if (type == VerifiedParamType.OrderedSetOfParamTypes || type == VerifiedParamType.All)
{
if (functionElement.parameters[i] != functionElem.parameters[i])
{
flag = false;
break;
}
}
}
if (!flag)
{
continue;
}
if (functionElement.returnType != functionElem.returnType)
{
continue;
}
counter++;
}
return(counter == 1);
}
/// <summary>
/// Verify whether the FunctionElement instance is unique in a set of FunctionElement instance.
/// </summary>
/// <param name="functionElement">A FunctionElement instance.</param>
/// <param name="functionElements">A set of FunctionElement instances.</param>
/// <param name="type">The type of verified parameter type (Distinguish with an unordered set Of parameter names and an ordered set of parameter types.).</param>
/// <returns>Returns the verification result.</returns>
public static bool Unique(FunctionElement functionElement, IEnumerable<FunctionElement> functionElements, VerifiedParamType type)
{
int counter = 0;
foreach (var functionElem in functionElements)
{
if (functionElement.name != functionElem.name)
{
continue;
}
if (functionElement.isBound != functionElem.isBound)
{
continue;
}
if (functionElement.bindingParamName != functionElem.bindingParamName)
{
continue;
}
if (functionElement.parameters.Count != functionElem.parameters.Count)
{
continue;
}
// Verify the unordered set of non-binding parameter names and the ordered set of parameter types.
bool flag = true;
for (int i = 0; i < functionElement.parameters.Count; i++)
{
if (type == VerifiedParamType.UnorderedSetOfParamNames || type == VerifiedParamType.All)
{
if (!functionElem.parameters.Contains(functionElement.parameters[i]))
{
flag = false;
break;
}
}
if (type == VerifiedParamType.OrderedSetOfParamTypes || type == VerifiedParamType.All)
{
if (functionElement.parameters[i] != functionElem.parameters[i])
{
flag = false;
break;
}
}
}
if (!flag)
{
continue;
}
if (functionElement.returnType != functionElem.returnType)
{
continue;
}
counter++;
}
return counter == 1;
}
/// <summary>
/// Parse an element with XElement type to a FunctionElement instance.
/// </summary>
/// <param name="xElem">An element with XElement type.</param>
/// <returns>Returns a FunctionElement instance.</returns>
public static FunctionElement Parse(XElement xElem)
{
if (null == xElem && "Function" == xElem.Name.LocalName)
{
return(null);
}
string name = string.Empty;
bool isBound = false;
string bindingParamName = string.Empty;
List <Parameter> parameters = new List <Parameter>();
string returnType = string.Empty;
if (null != xElem.Attribute("Name"))
{
name = xElem.GetAttributeValue("Name");
}
if (null != xElem.Attribute("IsBound"))
{
isBound = Convert.ToBoolean(xElem.GetAttributeValue("IsBound"));
}
string xPath = "./*[local-name()='Parameter']";
var paramElems = xElem.XPathSelectElements(xPath, ODataNamespaceManager.Instance);
if (null != paramElems && paramElems.Any())
{
bool once = true;
foreach (var paramElem in paramElems)
{
if (isBound && once)
{
once = false;
if (null != paramElem.Attribute("Name"))
{
bindingParamName = paramElem.GetAttributeValue("Name");
}
continue;
}
if (null != paramElem.Attribute("Name") && null != paramElem.Attribute("Type"))
{
var parameter = new Parameter(paramElem.GetAttributeValue("Name"), paramElem.GetAttributeValue("Type"));
parameters.Add(parameter);
}
}
}
xPath = "./*[local-name()='ReturnType']";
var returnTypeElem = xElem.XPathSelectElement(xPath, ODataNamespaceManager.Instance);
if (null != returnTypeElem && null != returnTypeElem.Attribute("Type"))
{
returnType = returnTypeElem.GetAttributeValue("Type");
}
var functionElement = new FunctionElement(name, isBound, bindingParamName, parameters, returnType);
return(functionElement);
}
/// <summary>
/// Parse an element with XElement type to a FunctionElement instance.
/// </summary>
/// <param name="xElem">An element with XElement type.</param>
/// <returns>Returns a FunctionElement instance.</returns>
public static FunctionElement Parse(XElement xElem)
{
if (null == xElem && "Function" == xElem.Name.LocalName)
{
return null;
}
string name = string.Empty;
bool isBound = false;
string bindingParamName = string.Empty;
List<Parameter> parameters = new List<Parameter>();
string returnType = string.Empty;
if (null != xElem.Attribute("Name"))
{
name = xElem.GetAttributeValue("Name");
}
if (null != xElem.Attribute("IsBound"))
{
isBound = Convert.ToBoolean(xElem.GetAttributeValue("IsBound"));
}
string xPath = "./*[local-name()='Parameter']";
var paramElems = xElem.XPathSelectElements(xPath, ODataNamespaceManager.Instance);
if (null != paramElems && paramElems.Any())
{
bool once = true;
foreach (var paramElem in paramElems)
{
if (isBound && once)
{
once = false;
if (null != paramElem.Attribute("Name"))
{
bindingParamName = paramElem.GetAttributeValue("Name");
}
continue;
}
if (null != paramElem.Attribute("Name") && null != paramElem.Attribute("Type"))
{
var parameter = new Parameter(paramElem.GetAttributeValue("Name"), paramElem.GetAttributeValue("Type"));
parameters.Add(parameter);
}
}
}
xPath = "./*[local-name()='ReturnType']";
var returnTypeElem = xElem.XPathSelectElement(xPath, ODataNamespaceManager.Instance);
if (null != returnTypeElem && null != returnTypeElem.Attribute("Type"))
{
returnType = returnTypeElem.GetAttributeValue("Type");
}
var functionElement = new FunctionElement(name, isBound, bindingParamName, parameters, returnType);
return functionElement;
}
