/// <summary>
/// Input to automaton
/// </summary>
/// <param name="c">Key code</param>
/// <param name="valid">Returns the character is valid</param>
/// <param name="custom">Input custom</param>
/// <returns>Next automaton</returns>
public InputAutomaton Input(int c, ref bool valid, IInputCustom custom)
{
if (!_connect.ContainsKey(c))
{
// reject
valid = false;
return(this);
}
else
{
valid = true;
if (custom != null)
{
custom.SetFlags(_connect[c].Flags);
}
return(_connect[c].Automaton);
}
}
/// <summary>
/// Build string from automaton.
/// </summary>
/// <param name="root">Root state</param>
/// <param name="current">Current State</param>
/// <param name="inputCustom">Input custom (do not modify)</param>
/// <param name="pos">Return current position</param>
/// <param name="nextCharacter">Return next valid character.</param>
/// <returns>If nextCharacter is -1, Return only next character, otherwise, return all the string.</returns>
public virtual string FromAutomaton(InputAutomaton root, InputAutomaton current, IInputCustom custom, ref int pos, ref int nextCharacter)
{
var result = new StringBuilder();
pos = 0;
InputAutomaton automaton = root;
while (!(automaton.IsAccept()))
{
bool found = false;
KeyValuePair <int, InputAutomaton.Connect> select = new KeyValuePair <int, InputAutomaton.Connect>();
foreach (var i in automaton.GetConnect())
{
// Use first connection because no need to consider customization
int c = i.Key;
bool valid = false;
InputAutomaton automaton_tmp = automaton.Input(c, ref valid, null);
if (current == automaton_tmp)
{
select = i;
found = true;
}
}
if (!found)
{
// Found no route, use the first route
select = automaton.GetConnect().First();
}
int c2 = select.Key;
string addstring = select.Value.Character;
// In CPU mode, use only first key
if (nextCharacter != -1)
{
nextCharacter = c2;
break;
}
// Go to next automaton
bool valid2 = false;
result.Append(addstring);
automaton = automaton.Input(c2, ref valid2, null);
if (current == automaton)
{
pos = result.Length;
}
}
return(result.ToString());
}
/// <summary>
/// Build string from automaton.
/// </summary>
/// <param name="root">Root state</param>
/// <param name="current">Current State</param>
/// <param name="inputCustom">Input custom (do not modify)</param>
/// <param name="pos">Return current position</param>
/// <param name="nextCharacter">Return next valid character.</param>
/// <returns>If nextCharacter is -1, Return only next character, otherwise, return all the string.</returns>
public virtual string FromAutomaton(InputAutomaton root, InputAutomaton current, IInputCustom custom, ref int pos, ref int nextCharacter)
{
var result = new StringBuilder();
pos = 0;
InputAutomaton automaton = root;
while (!(automaton.IsAccept()))
{
int c = '\0';
string addstring = "";
// If we have perfect input custom, use that
foreach (var i in automaton.GetConnect())
{
if (custom.IsSet(i.Value.Flags))
{
c = i.Key;
addstring = i.Value.Character;
break;
}
}
if (c == '\0')
{
// Found no route, use the first route
c = automaton.GetConnect().First().Key;
addstring = automaton.GetConnect().First().Value.Character;
}
// In CPU mode, use only first key
if (nextCharacter != -1)
{
nextCharacter = c;
break;
}
// Go to next automaton
bool valid = false;
result.Append(addstring);
automaton = automaton.Input(c, ref valid, null);
if (current == automaton)
{
pos = result.Length;
}
}
return(result.ToString());
}
/// <summary>
/// Build string from automaton.
/// </summary>
/// <param name="root">Root state</param>
/// <param name="current">Current State</param>
/// <param name="inputCustom">Input custom (do not modify)</param>
/// <param name="pos">Return current position</param>
/// <param name="nextCharacter">Return next valid character.</param>
/// <returns>If nextCharacter is -1, Return only next character, otherwise, return all the string.</returns>
public virtual string FromAutomaton(InputAutomaton root, InputAutomaton current, IInputCustom custom, ref int pos, ref int nextCharacter)
{
var result = new StringBuilder();
pos = 0;
InputAutomaton automaton = root;
while (!(automaton.IsAccept()))
{
// Select first connection
var select = automaton.GetConnect().First();
int c2 = select.Key;
string addstring = select.Value.Character;
// In CPU mode, use only first key
if (nextCharacter != -1)
{
nextCharacter = c2;
break;
}
// Go to next automaton
bool valid2 = false;
result.Append(addstring);
automaton = automaton.Input(c2, ref valid2, null);
if (current == automaton)
{
pos = result.Length;
}
}
return(result.ToString());
}
