/// <summary>
/// Finds types that have a dependency on every items in a given list of dependencies.
/// </summary>
/// <param name="input">The set of type definitions to search.</param>
/// <param name="dependencies">The set of dependencies to look for.</param>
/// <returns>A list of dependencies found in the input classes.</returns>
internal IReadOnlyList <TypeDefinition> FindTypesWithAllDependencies(IEnumerable <TypeDefinition> input, IEnumerable <string> dependencies)
{
// Set up the search definition
var results = new SearchDefinition(dependencies);
// Check each type in turn
foreach (var type in input)
{
CheckType(type, ref results);
}
var output = new List <TypeDefinition>();
foreach (var typeFound in results.TypesFound)
{
// NB: Nested classes won't be picked up here
var match = input.FirstOrDefault(d => d.FullName.Equals(typeFound, StringComparison.InvariantCultureIgnoreCase));
if (match != null &&
results.GetAllDependenciesMatchingAnyOf(results.GetDependenciesFoundForType(typeFound)).Count() == results.UniqueDependenciesCount)
{
// Check found
output.Add(match);
}
}
return(output);
}
/// <summary>
/// Finds matching dependencies for a given method by scanning the code.
/// </summary>
private void CheckMethodBody(TypeDefinition type, MethodDefinition method, ref SearchDefinition results)
{
if (method.HasBody)
{
foreach (var variable in method.Body.Variables)
{
// Check any nested types in methods - the compiler will create one for every asynchronous method or iterator.
if (variable.VariableType.IsNested)
{
CheckType(variable.VariableType.Resolve(), ref results);
}
else
{
if (variable.VariableType.ContainsGenericParameter)
{
CheckParameters(type, variable.VariableType.GenericParameters, ref results);
}
if (results.GetAllMatchingDependencies(variable.VariableType.FullName).Any())
{
results.AddToFound(type, variable.VariableType.FullName);
}
}
}
// Check each instruction for references to our types
foreach (var instruction in method.Body.Instructions)
{
if (instruction.Operand != null)
{
var operands = ExtractTypeNames(instruction.Operand.ToString());
var matches = results.GetAllDependenciesMatchingAnyOf(operands);
foreach (var item in matches)
{
results.AddToFound(type, item);
}
}
}
}
}
/// <summary>
/// Finds matching dependencies for a set of generic or not parameters
/// </summary>
private void CheckParameters(TypeDefinition type, IEnumerable <TypeReference> parameters, ref SearchDefinition results)
{
foreach (var parameter in parameters)
{
if (IsTypeGeneric(parameter.FullName))
{
var types = ExtractTypeNames(parameter.FullName);
var matches = results.GetAllDependenciesMatchingAnyOf(types);
foreach (var item in matches)
{
results.AddToFound(type, item);
}
}
else
{
if (results.GetAllMatchingDependencies(parameter.FullName).Any())
{
results.AddToFound(type, parameter.FullName);
}
}
}
}
