internal bool ParseSubject(TokenSet tokens, TokenCommand cmd)
{
var tokenObject = new TokenObject();
var result = false;
if (tokens.Current.MorphType == MorphType.Adjective)
{
ParseAdjectiveList(tokens, tokenObject);
if (tokens.Current == null)
{
return(result);
}
}
switch (tokens.Current.MorphType)
{
case MorphType.Noun:
tokenObject.Noun = tokens.Current.Value;
tokens.MoveNext();
cmd.Subjects.Add(tokenObject);
result = true;
break;
case MorphType.Pronoun:
result = ParseSubjectPronoun(tokens.Current, tokenObject, cmd);
tokens.MoveNext();
break;
}
return(result);
}
//--------------------------------------
// OBJECT = [ADJECTIVE LIST] <NOUN>
// OBJECT = <PRONOUN>
internal bool ParseObject(TokenSet tokens, TokenCommand cmd)
{
var finished = false;
var tokenObject = new TokenObject();
if (tokens.Current.MorphType == MorphType.Adjective)
{
ParseAdjectiveList(tokens, tokenObject);
finished = tokens.IsFinished;
}
if (!finished)
{
switch (tokens.Current.MorphType)
{
case MorphType.Noun:
tokenObject.Noun = tokens.Current.Value;
tokens.MoveNext();
cmd.Objects.Add(tokenObject);
finished = true;
break;
case MorphType.Pronoun:
finished = ParseObjectPronoun(tokens.Current, tokenObject, cmd);
tokens.MoveNext();
break;
}
}
return(finished);
}
internal void ParseAdjectiveList(TokenSet tokens, TokenObject tokenObject)
{
if (tokens.Current.MorphType != MorphType.Adjective)
{
return;
}
var finished = false;
while (!finished)
{
switch (tokens.Current.MorphType)
{
case MorphType.Adjective:
tokenObject.Adjectives.Add(tokens.Current);
finished = !tokens.MoveNext();
break;
case MorphType.Conjunction:
finished = !tokens.MoveNext();
break;
default:
finished = true;
break;
}
}
}
internal void ParseAdverbList(TokenSet tokens, TokenCommand cmd)
{
var finished = false;
if (tokens.Current.MorphType != MorphType.Adverb)
{
return;
}
while (!finished)
{
switch (tokens.Current.MorphType)
{
case MorphType.Adverb:
cmd.Adverbs.Add(tokens.Current);
finished = !tokens.MoveNext();
break;
case MorphType.Conjunction:
finished = !tokens.MoveNext();
break;
default:
finished = true;
break;
}
}
}
//==============================================
// Language definition
// SENTENCE = [SAY [TO] [OBJECT] "] COMMAND <CONJUNCTION> COMMAND ["]
//
// COMMAND = [ADVERB LIST] <VERB> [PREPOSITION] [<OBJECT LIST> [ADVERB LIST] [<PREPOSITION> <OBJECT LIST>] [ADVERB LIST]]
//
// ADVERB LIST = ADVERB [[<CONJUNCTION>] ADVERB LIST]
//
// OBJECT LIST = OBJECT [[<CONJUNCTION>] OBJECT LIST]
//
// OBJECT = [ADJECTIVE LIST] <NOUN>
//
// OBJECT = <PRONOUN>
//
// ADJECTIVE LIST = ADJECTIVE [[<CONJUNCTION>] ADJECTIVE LIST]
//
//-----------------------------------------------
internal TokenCommand ParseSentence(TokenSet tokens)
{
var cmd = new TokenCommand();
tokens.Reset();
if (!tokens.MoveNext())
{
return(null);
}
var token = tokens.Current;
if (token.MorphType == MorphType.Verb)
{
var tokenVerb = token;
if (tokenVerb.Value == _thesaurus.Keywords.VerbSay || tokenVerb.Value == _thesaurus.Keywords.VerbTalk)
{
cmd.Verb = tokenVerb;
if (!tokens.MoveNext())
{
return(null);
}
if (tokens.Current.MorphType == MorphType.Preposition)
{
cmd.Preposition = tokens.Current.Value;
if (!tokens.MoveNext())
{
return(null);
}
}
ParseSubject(tokens, cmd);
do
{
cmd.NpcTokens.Add(tokens.Current);
} while (tokens.MoveNext());
return(cmd);
}
}
ParseCommand(tokens, cmd);
while (!tokens.IsFinished && tokens.Current.MorphType == MorphType.Conjunction)
{
ParseCommand(tokens, cmd);
}
return(cmd);
}
internal void ParseSubjectList(TokenSet tokens, TokenCommand cmd)
{
var finished = false;
while (!finished)
{
switch (tokens.Current.MorphType)
{
case MorphType.Adjective:
case MorphType.Noun:
case MorphType.Pronoun:
ParseSubject(tokens, cmd);
finished = tokens.IsFinished;
break;
case MorphType.Conjunction:
case MorphType.Article:
finished = !tokens.MoveNext();
break;
default:
finished = true;
break;
}
}
}
internal void ParseCommand(TokenSet tokens, TokenCommand cmd)
{
if (tokens.Current.MorphType == MorphType.Adverb)
{
ParseAdverbList(tokens, cmd);
}
if (tokens.Current.MorphType == MorphType.Verb)
{
cmd.Verb = tokens.Current;
tokens.MoveNext();
}
if (tokens.IsFinished)
{
return;
}
if (tokens.Current.MorphType == MorphType.Preposition)
{
cmd.Preposition = tokens.Current.Value;
}
while (tokens.Current.MorphType == MorphType.Preposition && tokens.MoveNext())
{
}
if (tokens.IsFinished)
{
return;
}
ParseSubjectList(tokens, cmd);
if (tokens.IsFinished)
{
return;
}
ParseAdverbList(tokens, cmd);
if (tokens.IsFinished)
{
return;
}
while (tokens.Current.MorphType == MorphType.Preposition)
{
if (cmd.Preposition == null)
{
cmd.Preposition = tokens.Current.Value;
}
if (!tokens.MoveNext())
{
break;
}
}
if (tokens.IsFinished)
{
return;
}
ParseObjectList(tokens, cmd);
if (tokens.IsFinished)
{
return;
}
ParseAdverbList(tokens, cmd);
}