private CommandLineParserResult HandleExcept(CommandLineParserResult result, TokenizedInput tokens, string currentToken)
{
var index = tokens.IndexOf(currentToken) + 1;
if (index >= tokens.Count)
{
return(null);
}
var except = new List <Object>();
// process rest of the tokens as objects
for (int i = index; i < tokens.Count; i++)
{
// TODO: handle multiple objects with same name
var next = tokens[i];
if (next.IsPreposition() && result.Preposition == null)
{
result.Preposition = Prepositions.Get(next);
continue;
}
var obj = GetObject(result, next);
if (obj == null)
{
result.Error = Messages.CantSeeObject;
return(result);
}
else if (obj is MultipleObjectsFound)
{
var input = GetInput(result.Verb);
if (input.Error.HasValue())
{
return(input);
}
if (input.Objects.Count > 0)
{
except.AddRange(input.Objects);
}
}
else
{
except.Add(obj);
}
}
result.Objects = result.Objects.Where(x => !except.Contains(x)).ToList();
return(null);
}
public Grammar(string format)
{
Format = format;
foreach (var token in Tokens)
{
if (Prepositions.Contains(token))
{
Preposition = token;
break;
}
}
}
private CommandLineParserResult Parse(Verb verb, TokenizedInput tokens)
{
var result = new CommandLineParserResult
{
Verb = verb
};
var lastToken = "";
foreach (string token in tokens)
{
var obj = GetObject(result, token);
if (obj is Skip)
{
continue;
}
if (result.Objects.Contains(obj))
{
// will happen for something like "take the brass lamp"
continue;
}
if (obj != null)
{
if (obj.InScope)
{
if (result.Preposition == null || !result.Objects.Any())
{
// handles commands like "put on coat", "put down book", etc.
result.Ordered.Add(obj);
result.Objects.Add(obj);
}
else
{
result.Ordered.Add(obj);
result.IndirectObject = obj;
}
}
else if (obj is MultipleObjectsFound)
{
return(ResolveMultipleObjects(verb, (MultipleObjectsFound)obj));
}
else
{
result.Error = Messages.CantSeeObject;
return(result);
}
}
// distinguish between prepositions and movement - "go south", "put bottle down", "close up grate"
else if ((result.Verb is IDirectionProxy) && token.IsDirection() && !result.Objects.Any())
{
var v = token.ToVerb();
result.Ordered.Add(v);
result.Verb = v;
}
else if (token.IsPreposition())
{
var p = Prepositions.Get(token);
result.Ordered.Add(p);
result.Preposition = p;
}
else if (token == "all" && !result.Objects.Any())
{
result.IsAll = true;
if (!verb.Multi && !verb.MultiHeld)
{
result.Error = Messages.MultiNotAllowed;
break;
}
var multi = new List <Object>();
if (verb.Multi)
{
var objectsInRoom =
from o in CurrentRoom.ObjectsInRoom()
where !o.Animate
select o;
multi.AddRange(objectsInRoom);
}
if (verb.MultiHeld)
{
multi.AddRange(Inventory.Items);
}
// if object count is only 1, we don't add it so it can be handled in the verb using implict
// messages e.g. (the small bottle)
if (multi.Count > 1)
{
result.Objects.AddRange(multi);
}
}
else if (token == "except" && (verb.Multi || verb.MultiHeld) && lastToken == "all")
{
var except = HandleExcept(result, tokens, token);
if (except != null)
{
return(except);
}
break;
}
else
{
obj = result.Objects.FirstOrDefault();
if (obj != null && !result.IsAll)
{
result.Error = Messages.PartialUnderstanding(verb, obj);
}
else
{
result.Error = Messages.CantSeeObject;
}
return(result);
}
lastToken = token;
}
return(result);
}
public InputResult Parse(string input)
{
var result = new InputResult();
var tokenizer = new InputTokenizer();
var tokens = tokenizer.Tokenize(input);
if (tokens.Count == 0)
{
result.Action = () =>
{
Context.Parser.Print(L.DoNotUnderstand);
return(true);
};
return(result);
}
// there can be more than one match for verbs like "switch"
// which has one class that handles "switch on" and another
// class that handles "switch off"
var possibleVerbs = VerbList.GetVerbsByName(tokens[0]);
if (possibleVerbs.Count == 0)
{
result.Verb = new NullVerb();
result.Action = ErrorAction(L.VerbNotRecognized);
return(result);
}
if (possibleVerbs.Count == 1)
{
result.Verb = possibleVerbs.First();
}
// remove verb token
tokens.RemoveAt(0);
var grammarTokens = new List <string>();
bool hasPreposition = false;
foreach (string token in tokens)
{
// var objects = Objects.WithName(token);
var objects = (
from o in Objects.WithName(token)
where L.ObjectsInScope().Contains(o)
select o
).ToList();
bool hasObject = result.Objects.Count > 0;
if (!hasObject)
{
var rooms = Rooms.WithName(token);
foreach (var room in rooms)
{
objects.Add(room);
}
}
if (objects.Count == 0)
{
bool isDirection = possibleVerbs.Count == 1 &&
Compass.Directions.Contains(token) &&
result.Objects.Count == 0;
bool isPreposition = Prepositions.Contains(token);
if (isDirection)
{
possibleVerbs.Clear();
possibleVerbs.Add(VerbList.GetVerbByName(token));
}
else if (isPreposition)
{
hasPreposition = true;
grammarTokens.Add(token);
result.Preposition = token;
}
else if (token == K.ALL)
{
grammarTokens.Add(token);
result.IsAll = true;
}
else if (token == K.EXCEPT)
{
if (!result.IsAll && !result.Objects.Any())
{
result.Action = ErrorAction(L.CantSeeObject);
return(result);
}
result.IsExcept = true;
}
else
{
result.Action = ErrorAction(L.CantSeeObject);
return(result);
}
}
else
{
// need to implement "Which do you mean, the red cape or the black cape?" type behavior here
Object obj;
var ofInterest = objects.Where(x => x.InScope).ToList();
if (ofInterest.Count > 1)
{
obj = ofInterest.FirstOrDefault(x => x.InInventory);
}
else
{
obj = ofInterest.FirstOrDefault();
}
//-------------------------------------------------------------------------------------
bool isIndirectObject = hasPreposition && hasObject;
if (obj == null)
{
result.Action = ErrorAction(L.CantSeeObject);
return(result);
}
if (isIndirectObject)
{
grammarTokens.Add(K.INDIRECT_OBJECT_TOKEN);
result.IndirectObject = obj;
}
else if (result.IsExcept)
{
result.Exceptions.Add(obj);
}
else
{
if (!grammarTokens.Contains(K.OBJECT_TOKEN))
{
grammarTokens.Add(K.OBJECT_TOKEN);
}
if (!result.Objects.Contains(obj))
{
result.Objects.Add(obj);
}
}
}
}
result.Pregrammar = string.Join(" ", grammarTokens.ToArray());
var grammarBuilder = new GrammarBuilder(grammarTokens);
var grammars = grammarBuilder.Build();
FindVerb(result, possibleVerbs, grammars);
if ((result.IsAll || result.Objects.Count > 1) && !result.Verb.AllowsMulti)
{
return(DoesNotAllowMulti());
}
if (result.Grammar == null)
{
var incomplete = new IncompleteInput();
incomplete.Handle(result);
}
if (result.IsAll)
{
if (result.ObjectsMustBeHeld)
{
result.Objects = Inventory.Items.Reverse().ToList();
}
else
{
// This is different from Inform 6 which will include scenery and static
// objects (resulting in the generation of ridiculous messages like
// "well house: that's hardly portable"
result.Objects = (
from o in L.ObjectsInScope()
where o != L.CurrentLocation && !o.IsScenery && !o.IsStatic &&
!Inventory.Contains(o)
select o
).ToList();
}
}
if (result.IsExcept)
{
if (!result.Exceptions.Any())
{
return(WhatDoYouWantToDo(result));
}
result.Exceptions.ForEach(x => result.Objects.Remove(x));
}
return(result);
}
public bool Parse(string input)
{
InputTokenizer tokenizer = new InputTokenizer();
var tokens = tokenizer.Tokenize(input);
if (tokens.Count == 0)
{
Error = L.DoNotUnderstand;
return(false);
}
IList <Verb> possibleVerbs = VerbList.GetVerbsByName(tokens[0]);
if (possibleVerbs.Count == 0)
{
Error = L.VerbNotRecognized;
return(false);
}
// remove verb token
tokens.RemoveAt(0);
var grammarTokens = new List <string>();
bool hasPreposition = false;
bool isException = false;
foreach (string token in tokens)
{
var obj = Adventure.Net.Objects.GetByName(token);
if (obj == null)
{
if (Prepositions.Contains(token))
{
hasPreposition = true;
grammarTokens.Add(token);
}
else if (token == "all")
{
grammarTokens.Add(token);
}
else if (token == "except")
{
isException = true;
}
else
{
Error = L.DoNotUnderstand;
return(false);
}
}
else
{
if (hasPreposition && Objects.Count > 0)
{
grammarTokens.Add("y");
IndirectObject = obj;
}
else if (isException)
{
Exceptions.Add(obj);
}
else
{
if (!grammarTokens.Contains("x"))
{
grammarTokens.Add("x");
}
Objects.Add(obj);
}
}
}
Pregrammar = string.Join(" ", grammarTokens.ToArray());
var grammarBuilder = new GrammarBuilder(grammarTokens);
var grammars = grammarBuilder.Build();
return(true);
}
public InputResult Parse(string input)
{
var result = new InputResult();
var tokenizer = new InputTokenizer();
var tokens = tokenizer.Tokenize(input);
Action removeVerbToken = () => tokens.RemoveAt(0);
if (tokens.Count == 0)
{
result.Action = () =>
{
Context.Parser.Print(L.DoNotUnderstand);
return(true);
};
return(result);
}
// there can be more than one match for verbs like "switch"
// which has one class that handles "switch on" and another
// class that handles "switch off"
var possibleVerbs = VerbList.GetVerbsByName(tokens[0]);
if (possibleVerbs.Count == 0)
{
result.Verb = new NullVerb();
result.Action = ErrorAction(L.VerbNotRecognized);
return(result);
}
if (possibleVerbs.Count == 1)
{
result.Verb = possibleVerbs.First();
}
//else { NOT sure what to do about multiple possible verbs here}
// remove verb token
removeVerbToken();
var grammarTokens = new List <string>();
bool hasPreposition = false;
foreach (string token in tokens)
{
bool hasObject = result.Objects.Count > 0;
var objects = Objects.WithName(token);
if (!hasObject)
{
var rooms = Rooms.WithName(token);
foreach (var room in rooms)
{
objects.Add(room);
}
}
if (objects.Count == 0)
{
bool isDirection = possibleVerbs.Count == 1 &&
Compass.Directions.Contains(token) &&
result.Objects.Count == 0;
bool isPreposition = Prepositions.Contains(token);
if (isDirection)
{
possibleVerbs.Clear();
possibleVerbs.Add(VerbList.GetVerbByName(token));
}
else if (isPreposition)
{
hasPreposition = true;
grammarTokens.Add(token);
result.Preposition = token;
}
else if (token == K.ALL)
{
// result.Objects.AddRange(L.ObjectsInScope());
grammarTokens.Add(token);
result.IsAll = true;
}
else if (token == K.EXCEPT)
{
if (!result.IsAll && !result.Objects.Any())
{
result.Action = ErrorAction(L.CantSeeObject);
return(result);
}
result.IsExcept = true;
}
else
{
if (result.IsPartial)
{
string partial = String.Format("I only understood you as far as wanting to {0} the {1}.", possibleVerbs[0].Name, result.Objects[0].Name);
result.Action = ErrorAction(partial);
return(result);
}
result.Action = ErrorAction(L.CantSeeObject);
return(result);
}
}
else
{
// need to implement "Which do you mean, the red cape or the black cape?" type behavior here
Object obj;
var ofInterest = objects.Where(x => x.InScope).ToList();
if (ofInterest.Count > 1)
{
obj = ofInterest.FirstOrDefault(x => x.InInventory);
}
else
{
obj = ofInterest.FirstOrDefault();
}
//-------------------------------------------------------------------------------------
bool isIndirectObject = hasPreposition && hasObject;
if (obj == null)
{
result.Action = ErrorAction(L.CantSeeObject);
return(result);
}
if (isIndirectObject)
{
grammarTokens.Add(K.INDIRECT_OBJECT_TOKEN);
result.IndirectObject = obj;
}
else if (result.IsExcept)
{
//result.Objects.Remove(obj);
result.Exceptions.Add(obj);
}
else
{
if (!grammarTokens.Contains(K.OBJECT_TOKEN))
{
grammarTokens.Add(K.OBJECT_TOKEN);
}
if (!result.Objects.Contains(obj))
{
result.Objects.Add(obj);
}
result.IsPartial = true;
}
}
}
result.Pregrammar = string.Join(" ", grammarTokens.ToArray());
var grammarBuilder = new GrammarBuilder(grammarTokens);
var grammars = grammarBuilder.Build();
FindVerb(result, possibleVerbs, grammars);
if (result.Grammar == null)
{
var incomplete = new IncompleteInput();
incomplete.Handle(result);
}
if (result.IsAll)
{
if (result.ObjectsMustBeHeld)
{
result.Objects = result.Objects.Where(x => x.InInventory).ToList();
}
else
{
result.Objects = L.ObjectsInScope();
}
}
if (result.IsExcept)
{
result.Exceptions.ForEach(x => result.Objects.Remove(x));
}
return(result);
}
public static bool IsPreposition(this string input)
{
return(Prepositions.Contains(input));
}
