public override void Visit(ModuleId moduleId)
{
//Check if path exists
String path = ModuleCache.Instance.GetPath(moduleId);
if (!File.Exists(path))
{
ExceptionList.Add(new NonExistingModule(moduleId));
}
}
public void GetElementsTest()
{
//Add elements to list and retrieve them and check if they are correct
Module node1 = new Module();
ModuleId node2 = new ModuleId();
nodes.Add(node1);
nodes.Add(node2);
ISyntaxNode[] list = nodes.GetElements();
Assert.IsTrue(list.Length == 2);
Assert.AreSame(node1, list[0]);
Assert.AreSame(node2, list[1]);
}
/// <summary>
/// Set identifier of import
/// </summary>
/// <param name="identifier">Identifier for this import</param>
public void SetModuleId(ModuleId identifier)
{
ModuleIdentifier = identifier;
}
/// <summary>
/// Set identifier of this module
/// </summary>
/// <param name="identifier">Identifier to set</param>
public void SetModuleId(ModuleId identifier)
{
this.Identifier = identifier;
}
public virtual void Visit(ModuleId module)
{
VisitSubNodes(module);
}
/// <summary>
/// Check if ModuleCache contains a specified module
/// </summary>
/// <param name="module">ModuleId of module</param>
/// <returns>True if module is in Cache, otherwise false</returns>
public bool ContainsModule(ModuleId module)
{
return ModuleTable.Contains(module.ToString());
}
/// <summary>
/// Request an specified module
/// </summary>
/// <param name="indentifier">ModuleId of requested module</param>
/// <returns>Requested module if available</returns>
public Module RequestModule(ModuleId identifier)
{
if (ModuleTable.ContainsKey(identifier))
{ //Module already loaded so return instance of module
return (Module) ModuleTable[identifier];
}
//Module not cached, so load it
StreamReader moduleStream = new StreamReader(GetPath(identifier));
//Lexicalize and parse it
WaebricLexer lexer = new WaebricLexer(moduleStream);
lexer.LexicalizeStream();
WaebricParser parser = new WaebricParser(lexer.GetTokenIterator());
parser.Parse();
//Get module of tree
SyntaxTree tree = parser.GetTree();
//Add module to hashtable
Module requestedModule = tree.GetRoot();
ModuleTable.Add(identifier, requestedModule);
return requestedModule;
}
/// <summary>
/// Determine relative path of specified identifier
/// </summary>
/// <param name="identifier">Identifier of module</param>
/// <returns>Path of module</returns>
public String GetPath(ModuleId identifier)
{
String[] identifierList = identifier.GetIdentifiers().ToArray();
String path = DirectoryPath;
//Create path
for (int i = 0; i <= (identifierList.Length - 1); i++)
{
path += identifierList[i];
if (i != (identifierList.Length - 1))
{
path += "/";
}
}
//Add extension
path += ".wae";
return path;
}
public NonExistingModule(ModuleId moduleId)
{
Console.WriteLine("Error: Module " + moduleId.ToString() + " not found.");
}
/// <summary>
/// Parse a module identifier
/// </summary>
/// <param name="identifier">Identifier to parse</param>
public ModuleId ParseModuleId()
{
ModuleId moduleId = new ModuleId();
//parse module identifier
while (TokenStream.HasNext())
{
if (NextToken("identifier", "module identifier.identifier", TokenType.IDENTIFIER))
{
moduleId.AddIdentifier(CurrentToken.GetValue().ToString());
}
else
{
//Raise exception
throw new UnexpectedToken("Unexpected token found:", CurrentToken.GetValue().ToString(), CurrentToken.GetLine());
}
if (TokenStream.HasNext() && TokenStream.Peek(1).GetValue().ToString() == ".")
{ //Period, so another identifier will appear after this one
NextToken(".", "module identifier.identifier", '.');
}
else
{
break; //No more module identifier stuff will appear
}
}
return moduleId;
}
public void GetTest()
{
//Add elements to list and retrieve them and check if they are correct
Module node1 = new Module();
ModuleId node2 = new ModuleId();
nodes.Add(node1);
nodes.Add(node2);
ISyntaxNode[] list = nodes.GetElements();
Assert.IsTrue(list.Length == 2);
//Test if get with index works
Assert.AreSame(nodes.Get(1), node2);
}
