public Parser(string[] fileAsStringArray)
{
Lexer lexedFile = new Lexer(fileAsStringArray);
this.IniFileDictionary = new Dictionary <string, Dictionary <string, string> >();
ParseStatePatternHandle statePatternHandle = new ParseStatePatternHandle(this.IniFileDictionary);
statePatternHandle.CurrentState = new ParseStateFileStart();
foreach (LexerTokenNode currentToken in lexedFile.Tokens)
{
try
{
statePatternHandle.StateRequest(currentToken);
}
catch (Exception exception)
{
Console.WriteLine("Exception in file - " + fileName);
Console.WriteLine("INI Parser Exception - " + exception.Message);
throw exception;
}
}
IniFileDictionary = statePatternHandle.IniFileDictionary;
}
public void EvaluateState(ParseStatePatternHandle statePatternHandle)
{
try
{
switch (statePatternHandle.CurrentToken.TokenType)
{
case LexerTokenNode.Token.OpenSquareBrace:
if (statePatternHandle.CurrentToken.CharacterNumber == 1)
{
statePatternHandle.CurrentState = new ParseStateReadPrimeKey();
}
else
{
throw new Exception("First non-white space or comment in INI file must be an open square brace.");
}
break;
case LexerTokenNode.Token.WhiteSpace: //Ignore white space at the top - keep reading
statePatternHandle.CurrentState = new ParseStateFileStart();
break;
default:
break;
}
}
catch (Exception exception)
{
throw exception;
}
}
public void EvaluateState(ParseStatePatternHandle statePatternHandle)
{
try
{
switch (statePatternHandle.CurrentToken.TokenType)
{
case LexerTokenNode.Token.EndOfLine:
statePatternHandle.CurrentState = new ParseStateLineStart();
break;
case LexerTokenNode.Token.CloseSquareBrace:
if (statePatternHandle.StringBuffer != "")
{
statePatternHandle.CurrentPrimaryKey = statePatternHandle.StringBuffer;
statePatternHandle.IniFileDictionary.Add(statePatternHandle.CurrentPrimaryKey, new Dictionary <string, string>());
statePatternHandle.StringBuffer = "";
statePatternHandle.CurrentState = new ParseStateReadPrimeKey();
}
else
{
throw new Exception("Cannot have an empty primary key.");
}
break;
case LexerTokenNode.Token.String:
statePatternHandle.StringBuffer = statePatternHandle.CurrentToken.TokenValue;
statePatternHandle.CurrentState = new ParseStateReadPrimeKey();
break;
case LexerTokenNode.Token.WhiteSpace:
if (statePatternHandle.StringBuffer == "")
{
statePatternHandle.CurrentState = new ParseStateReadPrimeKey();
}
else
{
statePatternHandle.StringBuffer = statePatternHandle.CurrentToken.TokenValue;
statePatternHandle.CurrentState = new ParseStateReadPrimeKey();
}
break;
default:
throw new Exception("Unexpected character in primary key of INI file.");
}
}
catch (Exception exception)
{
throw exception;
}
}
public void EvaluateState(ParseStatePatternHandle statePatternHandle)
{
try
{
if (statePatternHandle.CurrentToken.TokenType == LexerTokenNode.Token.EndOfLine ||
statePatternHandle.CurrentToken.TokenType == LexerTokenNode.Token.EndOfFile)
{
if (statePatternHandle.IniFileDictionary.ContainsKey(statePatternHandle.CurrentPrimaryKey))
{
if (statePatternHandle.IniFileDictionary[statePatternHandle.CurrentPrimaryKey].ContainsKey(statePatternHandle.CurrentSecondaryKey))
{
statePatternHandle.IniFileDictionary[statePatternHandle.CurrentPrimaryKey][statePatternHandle.CurrentSecondaryKey] = statePatternHandle.StringBuffer;
statePatternHandle.StringBuffer = "";
statePatternHandle.CurrentState = new ParseStateLineStart();
}
else
{
throw new Exception("Cannot find secondary key " + statePatternHandle.CurrentSecondaryKey + ".");
}
}
else
{
throw new Exception("Cannot find primary key " + statePatternHandle.CurrentPrimaryKey + ".");
}
}
else
{
statePatternHandle.StringBuffer = statePatternHandle.StringBuffer + statePatternHandle.CurrentToken.TokenValue;
statePatternHandle.CurrentState = new ParseStateReadSubkeyValue();
}
}
catch (Exception exception)
{
throw exception;
}
}
public void EvaluateState(ParseStatePatternHandle statePatternHandle)
{
try
{
switch (statePatternHandle.CurrentToken.TokenType)
{
case LexerTokenNode.Token.EndOfFile:
statePatternHandle.CurrentState = null;
break;
case LexerTokenNode.Token.EndOfLine:
statePatternHandle.CurrentState = new ParseStateLineStart();
break;
case LexerTokenNode.Token.WhiteSpace:
if (statePatternHandle.StringBuffer == "")
{
statePatternHandle.CurrentState = new ParseStateLineStart();
}
else
{
statePatternHandle.StringBuffer = statePatternHandle.StringBuffer + statePatternHandle.CurrentToken.TokenValue;
statePatternHandle.CurrentState = new ParseStateLineStart();
}
break;
case LexerTokenNode.Token.OpenSquareBrace:
statePatternHandle.CurrentState = new ParseStateReadPrimeKey();
break;
case LexerTokenNode.Token.String:
statePatternHandle.StringBuffer = statePatternHandle.CurrentToken.TokenValue;
statePatternHandle.CurrentState = new ParseStateLineStart();
break;
case LexerTokenNode.Token.EqualSign:
if (statePatternHandle.StringBuffer == "")
{
throw new Exception("Subkey must contain at least one non-whitespace character.");
}
else
{
if (statePatternHandle.IniFileDictionary.ContainsKey(statePatternHandle.CurrentPrimaryKey))
{
statePatternHandle.CurrentSecondaryKey = statePatternHandle.StringBuffer;
statePatternHandle.IniFileDictionary[statePatternHandle.CurrentPrimaryKey].Add(statePatternHandle.StringBuffer, "");
statePatternHandle.StringBuffer = "";
statePatternHandle.CurrentState = new ParseStateReadSubkeyValue();
}
else
{
throw new Exception("Cannot find primary key " + statePatternHandle.CurrentPrimaryKey + " in dictionary.");
}
}
break;
default:
throw new Exception("Unexpected character at the start of a line.");
}
}
catch (Exception exception)
{
throw exception;
}
}