bool ScannerSpecification()
{
bool result = true;
if (term(TokenType.CHARACTERS, false))
{
result = result && term(TokenType.CHARACTERS, true);
while (term(TokenType.Ident, false))
{
LexerCharacterSet tmpSet = new LexerCharacterSet();
result = result && SetDecl(out tmpSet);
characterDefinitions.Add(tmpSet);
}
form.appendText("parsed CHARACTERSE\n");
}
if (term(TokenType.KEYWORDS, false))
{
result = result && term(TokenType.KEYWORDS, true);
while (term(TokenType.Ident, false))
{
result = result && KeywordDecl();
}
form.appendText("parsed KEYWORDS\n");
}
if (term(TokenType.TOKENS, false))
{
result = result && term(TokenType.TOKENS, true);
while (term(TokenType.Ident, false))
{
LexerToken tmpToken = new LexerToken();
result = result && TokenDecl(out tmpToken);
tokenDefinitions.Add(tmpToken);
}
form.appendText("parsed TOKENS\n");
}
while (term(TokenType.IGNORE, false))
{
result = result && WhiteSpaceDecl();
}
if (result)
{
form.appendText("Parsed scannerspec \n");
}
return result;
}
bool TokenDecl(out LexerToken tmpToken)
{
tmpToken = new LexerToken();
bool result = true;
string regexp = "";
string id = "";
if (term(TokenType.Ident, false))
{
id = tokenEnumerator.Current.getValue();
result = result && term(TokenType.Ident, true);
}
if (term(TokenType.EQUALS, false))
{
result = result && term(TokenType.EQUALS, true)
&& TokenExpr(out regexp);
}
if (term(TokenType.EXCEPT, false))
{
result = result && term(TokenType.EXCEPT, true)
&& term(TokenType.KEYWORDS, true);
}
tmpToken = new LexerToken(id, regexp);
result = result && term(TokenType.DOT, true);
if (result)
{
form.appendText("Parsed Tokendecl \n");
}
return result;
}
bool ParserSymbol(out Lr0Symbol theSymbol)
{
theSymbol = new Lr0Symbol();
bool result = true;
if (term(TokenType.Ident, false) || term(TokenType.String, false) || term(TokenType.Char, false))
{
string currentString = tokenEnumerator.Current.getValue();
if (term(TokenType.Ident, false))
{
bool isToken = false;
foreach (LexerToken t in tokenDefinitions)
{
if (currentString == t.Identifier)
{
theSymbol = new Lr0Symbol(t.Identifier, t.Identifier);
isToken = true;
}
}
if (!isToken)
{
if (currentString == "$")
theSymbol = Lr0GenerationHelper.getEndSymbol();
else if (currentString == "3")
theSymbol = Lr0GenerationHelper.getEpsylonSymbol();
else
theSymbol = new Lr0Symbol(currentString);
}
result = result && term(TokenType.Ident, true);
if (result)
{
form.appendText("Parsed ParseSymbol \n");
}
return result;
}
if (term(TokenType.String, false))
{
string tmpString = LexerGenerationHelper.getStringValue(currentString);
if (tmpString == "$")
{
theSymbol = Lr0GenerationHelper.getEndSymbol();
}
else if (tmpString == "3")
{
theSymbol = Lr0GenerationHelper.getEpsylonSymbol();
}
else
{
List<LexerToken> oldDefinitions = new List<LexerToken>(tokenDefinitions);
tokenDefinitions = new List<LexerToken>();
LexerToken tmpToken = new LexerToken();
theSymbol = new Lr0Symbol(currentString);
tokenDefinitions.Add(new LexerToken(Lr0GenerationHelper.getSafeName(tmpString), tmpString));
foreach (LexerToken oldToken in oldDefinitions)
{
tokenDefinitions.Add(oldToken);
}
theSymbol = new Lr0Symbol(Lr0GenerationHelper.getSafeName(tmpString), tmpString);
}
result = result && term(TokenType.String, true);
if (result)
{
form.appendText("Parsed ParseSymbol \n");
}
return result;
}
if (term(TokenType.Char, false))
{
string tmpString = LexerGenerationHelper.getCharValue(currentString).ToString();
if (tmpString == "$")
{
theSymbol = Lr0GenerationHelper.getEndSymbol();
}
else if (tmpString == "3")
{
theSymbol = Lr0GenerationHelper.getEpsylonSymbol();
}
else
{
List<LexerToken> oldDefinitions = new List<LexerToken>(tokenDefinitions);
tokenDefinitions = new List<LexerToken>();
tokenDefinitions.Add(new LexerToken(Lr0GenerationHelper.getSafeName(tmpString), tmpString));
foreach (LexerToken oldToken in oldDefinitions)
{
tokenDefinitions.Add(oldToken);
}
theSymbol = new Lr0Symbol(Lr0GenerationHelper.getSafeName(tmpString), tmpString);
}
result = result && term(TokenType.Char, true);
if (result)
{
form.appendText("Parsed ParseSymbol \n");
}
return result;
}
}
else
{
return false;
}
return result;
}