/// <summary>
/// Compiles a pattern string produces a Minimum DFA model.
/// </summary>
/// <param name="sPattern">Actual pattern string in the correct format</param>
/// <returns>ErrorCode indicating how the compilatio went.</returns>
public ErrorCode Compile(string sPattern)
{
ValidationInfo vi = m_reValidator.Validate(sPattern);
UpdateValidationInfo(vi);
if (vi.ErrorCode != ErrorCode.ERR_SUCCESS)
{
return(vi.ErrorCode);
}
State.ResetCounter();
string sRegExConcat = vi.FormattedString;
string sRegExPostfix = ConvertToPostfix(sRegExConcat);
State stateStartNfa = CreateNfa(sRegExPostfix);
State.ResetCounter();
State stateStartDfa = ConvertToDfa(stateStartNfa);
m_stateStartDfaM = stateStartDfa;
m_stateStartDfaM = ReduceDfa(stateStartDfa);
return(ErrorCode.ERR_SUCCESS);
}
/// <summary>
/// Compiles a pattern string produces a Minimum DFA model.
/// </summary>
/// <param name="sPattern">Actual pattern string in the correct format</param>
/// <param name="sbStats">This will receive the statistics. Can be null.</param>
/// <returns>ErrorCode indicating how the compilatio went.</returns>
public ErrorCode CompileWithStats(string sPattern, StringBuilder sbStats)
{
if (sbStats == null)
{
return(Compile(sPattern)); // no statistics required
}
State.ResetCounter();
int nLineLength = 0;
ValidationInfo vi = m_reValidator.Validate(sPattern);
UpdateValidationInfo(vi);
if (vi.ErrorCode != ErrorCode.ERR_SUCCESS)
{
return(vi.ErrorCode);
}
//虽然注意到了connection问题,但是没想到用.号表示。
string sRegExPostfix = ConvertToPostfix(vi.FormattedString);
sbStats.AppendLine("Original pattern:\t\t" + sPattern);
sbStats.AppendLine("Pattern after formatting:\t" + vi.FormattedString);
sbStats.AppendLine("Pattern after postfix:\t\t" + sRegExPostfix);
sbStats.AppendLine();
State stateStartNfa = CreateNfa(sRegExPostfix);
sbStats.AppendLine();
sbStats.AppendLine("NFA Table:");
nLineLength = GetSerializedFsa(stateStartNfa, sbStats);
sbStats.AppendFormat(("").PadRight(nLineLength, '*'));
sbStats.AppendLine();
State.ResetCounter();
State stateStartDfa = ConvertToDfa(stateStartNfa);
sbStats.AppendLine();
sbStats.AppendLine("DFA Table:");
nLineLength = GetSerializedFsa(stateStartDfa, sbStats);
sbStats.AppendFormat(("").PadRight(nLineLength, '*'));
sbStats.AppendLine();
State stateStartDfaM = ReduceDfa(stateStartDfa);
m_stateStartDfaM = stateStartDfaM;
sbStats.AppendLine();
sbStats.AppendLine("DFA M' Table:");
nLineLength = GetSerializedFsa(stateStartDfaM, sbStats);
sbStats.AppendFormat(("").PadRight(nLineLength, '*'));
sbStats.AppendLine();
return(ErrorCode.ERR_SUCCESS);
}