public static string Interpret(string file)
{
var tokenTable = new TokenTable();
var lexFileMode = LexFileMode.Normal;
var llText = File.ReadAllText(file);
var modeRegex = new Regex(@"^[a-zA-Z_][0-9a-zA-Z_-]*$");
var tokenRegex = new Regex(@"^([^\s]+)\s+(([a-zA-Z_][0-9a-zA-Z_-]*)|(%%))(\s+([a-zA-Z_][0-9a-zA-Z_-]*))?$");
var lines = llText
.Split(new char[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries)
.Select(x => x.Trim());
var lexerMode = 0;
var lexerModes = new Dictionary<string, int>();
var tokenTypes = new List<string>();
var keywords = new List<string>();
string llName = lines.First();
lines = lines.Skip(1);
var lastDot = llName.LastIndexOf('.');
string ns = llName.Remove(lastDot);
string name = llName.Substring(lastDot + 1);
string lexerName = name + "Lexer";
string tokenName = name + "Token";
string tokenTypeName = name + "TokenType";
string codeLexeme = null;
string code = null;
string buffer = null;
string keywordDefault = "";
string keywordTail = "";
Action<string> registerMode = x =>
{
if (!lexerModes.ContainsKey(x))
lexerModes.Add(x, lexerMode++);
};
foreach (var line in lines)
{
if (lexFileMode == LexFileMode.Normal)
{
Match m = null;
if (modeRegex.IsMatch(line))
{
registerMode(line);
tokenTable.SetMode(lexerModes[line]);
}
else if (line == KeywordDelimiter)
{
lexFileMode = LexFileMode.Keyword;
continue;
}
else if (line == CodeDelimiter)
{
lexFileMode = LexFileMode.Code;
codeLexeme = null;
code = "";
continue;
}
else if ((m = tokenRegex.Match(line)) != null)
{
var regex = m.Groups[1].Value;
var regexLexer = new RegexLexer(regex);
var tokens = regexLexer.GetTokens();
var parser = new RegexParser(tokens.ToArray());
var ast = parser.Parse();
var compiler = new RegexCompiler(ast);
var strings = compiler.ExpandRegex();
foreach (var lexeme in strings)
{
var tokenType = m.Groups[2].Value;
if (tokenType == CodeDelimiter)
{
codeLexeme = lexeme;
code = "";
lexFileMode = LexFileMode.Code;
continue;
}
else if (!tokenTypes.Contains(tokenType))
tokenTypes.Add(tokenType);
var newMode = m.Groups[6].Value;
if (!string.IsNullOrEmpty(newMode))
{
registerMode(newMode);
tokenTable.Add(lexeme, tokenType, lexerModes[newMode]);
}
else
tokenTable.Add(lexeme, tokenType);
}
}
}
else if (lexFileMode == LexFileMode.Code)
{
if (line == CodeDelimiter)
{
if (codeLexeme != null)
tokenTable.AddLexemeCode(codeLexeme, code);
else
tokenTable.AddCode(code);
lexFileMode = LexFileMode.Normal;
continue;
}
else
code += line + "\r\n";
}
else if (lexFileMode == LexFileMode.Keyword)
{
if (line == KeywordDelimiter)
{
lexFileMode = LexFileMode.Normal;
continue;
}
else if (line == CodeDelimiter)
{
lexFileMode = LexFileMode.KeywordDefault;
continue;
}
else if (line != "")
{
keywords.Add(line);
tokenTable.AddKeyword(line);
}
}
else if (lexFileMode == LexFileMode.KeywordDefault)
{
if (line == CodeDelimiter)
{
if (string.IsNullOrEmpty(keywordDefault))
{
keywordDefault = buffer;
}
else
{
keywordTail = buffer;
}
buffer = "";
lexFileMode = LexFileMode.Keyword;
continue;
}
else
{
buffer += line + "\r\n";
}
}
}
foreach (var keyword in keywords)
{
var t = keyword + "Keyword";
if (keywordTail != null)
{
tokenTable.AddLexemeCode(keyword, keywordTail.Replace("{Keyword}", t));
}
else
{
tokenTable.Add(keyword, t);
}
}
if (!string.IsNullOrEmpty(keywordDefault))
{
var k = keywords
.SelectMany(x => Enumerable
.Range(1, x.Length - 1)
.Select(y => x.Remove(y))
.ToArray())
.Distinct()
.ToArray();
foreach (var i in k)
{
if (tokenTable.Lists.Any(x => x.Value.Any(y => y.Lexeme == i)))
{
continue;
}
tokenTable.AddLexemeCode(i, keywordDefault);
}
}
//var tuples = tokenTable.Lists[1]
// .Where(x => x.TokenType != "None" && x.NewMode == null)
// .Concat(tokenTable.Keywords
// .Select(y => new TokenEntry(y, y + "Keyword")))
// .Select(x => string.Format(
// "Tuple.Create(TokenType.{0},\"{1}\"),",
// x.TokenType,
// Char.IsWhiteSpace(x.Lexeme[0]) ? string.Format("\\x{0:X2}", (int)x.Lexeme[0]) :
// x.Lexeme == "\\" ? "\\\\" :
// x.Lexeme))
// .Aggregate((x, y) => x + "\r\n" + y);
var generator = new LexerGenerator(tokenTable);
var lexer = generator.Generate();
return lexer
.Replace("{Lexer}", lexerName)
.Replace("{Token}", tokenName)
.Replace("{TokenType}", tokenTypeName)
.Replace("{LexerNamespace}", ns);
}
public LexerGenerator(TokenTable table)
{
this.table = table;
}
public static string Interpret(string file)
{
var interpreter = new AphidInterpreter();
interpreter.InterpretFile(file);
var retVal = interpreter.GetReturnValue();
var llexFile = new LLexFile();
retVal.Bind(llexFile);
var tokenTable = new TokenTable();
tokenTable.Ignore = llexFile.Ignore;
var nameInfo = LLexNameInfo.Parse(llexFile.Name);
int z = 0;
var modeTable = llexFile.Modes.ToDictionary(x => x.Mode, x => z++);
var tokenTypes = new List<string>();
foreach (var mode in llexFile.Modes)
{
tokenTable.SetMode(modeTable[mode.Mode]);
foreach (var token in mode.Tokens)
{
if (token.Regex != null)
{
var regexLexer = new RegexLexer(token.Regex);
var tokens = regexLexer.GetTokens();
var parser = new RegexParser(tokens.ToArray());
var ast = parser.Parse();
var compiler = new RegexCompiler(ast);
var strings = compiler.ExpandRegex();
foreach (var l in strings)
{
if (token.Code != null)
{
tokenTable.AddLexemeCode(l, token.Code);
continue;
}
if (!tokenTypes.Contains(token.TokenType))
tokenTypes.Add(token.TokenType);
if (!string.IsNullOrEmpty(token.NewMode))
{
tokenTable.Add(l, token.TokenType, modeTable[token.NewMode]);
}
else
{
tokenTable.Add(l, token.TokenType);
}
}
}
else if (token.Code != null)
{
tokenTable.AddCode(token.Code);
}
}
foreach (var keyword in mode.Keywords)
{
tokenTable.AddKeyword(keyword);
var t = keyword + "Keyword";
if (mode.KeywordTail != null)
{
tokenTable.AddLexemeCode(keyword, mode.KeywordTail.Replace("{Keyword}", t));
}
else
{
tokenTable.Add(keyword, t);
}
}
if (!string.IsNullOrEmpty(mode.KeywordDefault))
{
var k = mode.Keywords
.SelectMany(x => Enumerable
.Range(1, x.Length - 1)
.Select(y => x.Remove(y))
.ToArray())
.Distinct()
.ToArray();
foreach (var i in k)
{
if (tokenTable.Lists.Any(x => x.Value.Any(y => y.Lexeme == i)))
{
continue;
}
tokenTable.AddLexemeCode(i, mode.KeywordDefault);
}
}
}
var generator = new LexerGenerator(tokenTable) { IgnoreCase = llexFile.IgnoreCase };
var lexer = generator.Generate();
return lexer
.Replace("{Lexer}", nameInfo.LexerName)
.Replace("{Token}", nameInfo.TokenName)
.Replace("{TokenType}", nameInfo.TokenTypeName)
.Replace("{LexerNamespace}", nameInfo.Namespace);
}
public static string Interpret(string file)
{
var interpreter = new AphidInterpreter();
interpreter.InterpretFile(file);
var retVal = interpreter.GetReturnValue();
var llexFile = new LLexFile();
retVal.Bind(llexFile);
var tokenTable = new TokenTable();
tokenTable.Ignore = llexFile.Ignore;
var nameInfo = LLexNameInfo.Parse(llexFile.Name);
int z = 0;
var modeTable = llexFile.Modes.ToDictionary(x => x.Mode, x => z++);
var tokenTypes = new List <string>();
foreach (var mode in llexFile.Modes)
{
tokenTable.SetMode(modeTable[mode.Mode]);
foreach (var token in mode.Tokens)
{
if (token.Regex != null)
{
var regexLexer = new RegexLexer(token.Regex);
var tokens = regexLexer.GetTokens();
var parser = new RegexParser(tokens.ToArray());
var ast = parser.Parse();
var compiler = new RegexCompiler(ast);
var strings = compiler.ExpandRegex();
foreach (var l in strings)
{
if (token.Code != null)
{
tokenTable.AddLexemeCode(l, token.Code);
continue;
}
if (!tokenTypes.Contains(token.TokenType))
{
tokenTypes.Add(token.TokenType);
}
if (!string.IsNullOrEmpty(token.NewMode))
{
tokenTable.Add(l, token.TokenType, modeTable[token.NewMode]);
}
else
{
tokenTable.Add(l, token.TokenType);
}
}
}
else if (token.Code != null)
{
tokenTable.AddCode(token.Code);
}
}
foreach (var keyword in mode.Keywords)
{
tokenTable.AddKeyword(keyword);
var t = keyword + "Keyword";
if (mode.KeywordTail != null)
{
tokenTable.AddLexemeCode(keyword, mode.KeywordTail.Replace("{Keyword}", t));
}
else
{
tokenTable.Add(keyword, t);
}
}
if (!string.IsNullOrEmpty(mode.KeywordDefault))
{
var k = mode.Keywords
.SelectMany(x => Enumerable
.Range(1, x.Length - 1)
.Select(y => x.Remove(y))
.ToArray())
.Distinct()
.ToArray();
foreach (var i in k)
{
if (tokenTable.Lists.Any(x => x.Value.Any(y => y.Lexeme == i)))
{
continue;
}
tokenTable.AddLexemeCode(i, mode.KeywordDefault);
}
}
}
var generator = new LexerGenerator(tokenTable);
var lexer = generator.Generate();
return(lexer
.Replace("{Lexer}", nameInfo.LexerName)
.Replace("{Token}", nameInfo.TokenName)
.Replace("{TokenType}", nameInfo.TokenTypeName)
.Replace("{LexerNamespace}", nameInfo.Namespace));
}
public LexerGenerator(TokenTable table)
{
this.table = table;
}
public static string Interpret(string file)
{
var tokenTable = new TokenTable();
var lexFileMode = LexFileMode.Normal;
var llText = File.ReadAllText(file);
var modeRegex = new Regex(@"^[a-zA-Z_][0-9a-zA-Z_-]*$");
var tokenRegex = new Regex(@"^([^\s]+)\s+(([a-zA-Z_][0-9a-zA-Z_-]*)|(%%))(\s+([a-zA-Z_][0-9a-zA-Z_-]*))?$");
var lines = llText
.Split(new char[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries)
.Select(x => x.Trim());
var lexerMode = 0;
var lexerModes = new Dictionary <string, int>();
var tokenTypes = new List <string>();
var keywords = new List <string>();
string llName = lines.First();
lines = lines.Skip(1);
var lastDot = llName.LastIndexOf('.');
string ns = llName.Remove(lastDot);
string name = llName.Substring(lastDot + 1);
string lexerName = name + "Lexer";
string tokenName = name + "Token";
string tokenTypeName = name + "TokenType";
string codeLexeme = null;
string code = null;
string buffer = null;
string keywordDefault = "";
string keywordTail = "";
Action <string> registerMode = x =>
{
if (!lexerModes.ContainsKey(x))
{
lexerModes.Add(x, lexerMode++);
}
};
foreach (var line in lines)
{
if (lexFileMode == LexFileMode.Normal)
{
Match m = null;
if (modeRegex.IsMatch(line))
{
registerMode(line);
tokenTable.SetMode(lexerModes[line]);
}
else if (line == KeywordDelimiter)
{
lexFileMode = LexFileMode.Keyword;
continue;
}
else if (line == CodeDelimiter)
{
lexFileMode = LexFileMode.Code;
codeLexeme = null;
code = "";
continue;
}
else if ((m = tokenRegex.Match(line)) != null)
{
var regex = m.Groups[1].Value;
var regexLexer = new RegexLexer(regex);
var tokens = regexLexer.GetTokens();
var parser = new RegexParser(tokens.ToArray());
var ast = parser.Parse();
var compiler = new RegexCompiler(ast);
var strings = compiler.ExpandRegex();
foreach (var lexeme in strings)
{
var tokenType = m.Groups[2].Value;
if (tokenType == CodeDelimiter)
{
codeLexeme = lexeme;
code = "";
lexFileMode = LexFileMode.Code;
continue;
}
else if (!tokenTypes.Contains(tokenType))
{
tokenTypes.Add(tokenType);
}
var newMode = m.Groups[6].Value;
if (!string.IsNullOrEmpty(newMode))
{
registerMode(newMode);
tokenTable.Add(lexeme, tokenType, lexerModes[newMode]);
}
else
{
tokenTable.Add(lexeme, tokenType);
}
}
}
}
else if (lexFileMode == LexFileMode.Code)
{
if (line == CodeDelimiter)
{
if (codeLexeme != null)
{
tokenTable.AddLexemeCode(codeLexeme, code);
}
else
{
tokenTable.AddCode(code);
}
lexFileMode = LexFileMode.Normal;
continue;
}
else
{
code += line + "\r\n";
}
}
else if (lexFileMode == LexFileMode.Keyword)
{
if (line == KeywordDelimiter)
{
lexFileMode = LexFileMode.Normal;
continue;
}
else if (line == CodeDelimiter)
{
lexFileMode = LexFileMode.KeywordDefault;
continue;
}
else if (line != "")
{
keywords.Add(line);
tokenTable.AddKeyword(line);
}
}
else if (lexFileMode == LexFileMode.KeywordDefault)
{
if (line == CodeDelimiter)
{
if (string.IsNullOrEmpty(keywordDefault))
{
keywordDefault = buffer;
}
else
{
keywordTail = buffer;
}
buffer = "";
lexFileMode = LexFileMode.Keyword;
continue;
}
else
{
buffer += line + "\r\n";
}
}
}
foreach (var keyword in keywords)
{
var t = keyword + "Keyword";
if (keywordTail != null)
{
tokenTable.AddLexemeCode(keyword, keywordTail.Replace("{Keyword}", t));
}
else
{
tokenTable.Add(keyword, t);
}
}
if (!string.IsNullOrEmpty(keywordDefault))
{
var k = keywords
.SelectMany(x => Enumerable
.Range(1, x.Length - 1)
.Select(y => x.Remove(y))
.ToArray())
.Distinct()
.ToArray();
foreach (var i in k)
{
if (tokenTable.Lists.Any(x => x.Value.Any(y => y.Lexeme == i)))
{
continue;
}
tokenTable.AddLexemeCode(i, keywordDefault);
}
}
//var tuples = tokenTable.Lists[1]
// .Where(x => x.TokenType != "None" && x.NewMode == null)
// .Concat(tokenTable.Keywords
// .Select(y => new TokenEntry(y, y + "Keyword")))
// .Select(x => string.Format(
// "Tuple.Create(TokenType.{0},\"{1}\"),",
// x.TokenType,
// Char.IsWhiteSpace(x.Lexeme[0]) ? string.Format("\\x{0:X2}", (int)x.Lexeme[0]) :
// x.Lexeme == "\\" ? "\\\\" :
// x.Lexeme))
// .Aggregate((x, y) => x + "\r\n" + y);
var generator = new LexerGenerator(tokenTable);
var lexer = generator.Generate();
return(lexer
.Replace("{Lexer}", lexerName)
.Replace("{Token}", tokenName)
.Replace("{TokenType}", tokenTypeName)
.Replace("{LexerNamespace}", ns));
}
public static string From(AphidObject retVal)
{
var llexFile = new LLexFile();
retVal.Bind(llexFile);
var tokenTable = new TokenTable {
Ignore = llexFile.Ignore
};
var nameInfo = LLexNameInfo.Parse(llexFile.Name);
var z = 0;
var modeTable = llexFile.Modes.ToDictionary(x => x.Mode, x => z++);
var tokenTypes = new List <string>();
foreach (var mode in llexFile.Modes)
{
tokenTable.SetMode(modeTable[mode.Mode]);
foreach (var token in mode.Tokens)
{
if (token.Regex != null)
{
var regexLexer = new RegexLexer(token.Regex);
var tokens = regexLexer.GetTokens();
var parser = new RegexParser(tokens.ToArray());
var ast = parser.Parse();
var compiler = new RegexCompiler(ast);
var strings = compiler.ExpandRegex();
foreach (var l in strings)
{
if (token.Code != null)
{
tokenTable.AddLexemeCode(l, token.Code);
continue;
}
if (!tokenTypes.Contains(token.TokenType))
{
tokenTypes.Add(token.TokenType);
}
if (!string.IsNullOrEmpty(token.NewMode))
{
tokenTable.Add(l, token.TokenType, modeTable[token.NewMode]);
}
else
{
tokenTable.Add(l, token.TokenType);
}
}
}
else if (token.Code != null)
{
tokenTable.AddCode(token.Code);
}
else if (token.TokenType != null)
{
tokenTable.AddCode("return {TokenType}." + token.TokenType + ";\r\n");
}
else
{
throw new NotImplementedException(
"Token with no regex, code, or type not supported.");
}
}
foreach (var keyword in mode.Keywords ?? Array.Empty <string>())
{
tokenTable.AddKeyword(keyword);
var t = keyword + "Keyword";
if (mode.KeywordTail != null)
{
tokenTable.AddLexemeCode(keyword, mode.KeywordTail.Replace("{Keyword}", t));
}
else
{
tokenTable.Add(keyword, t);
}
}
if (!string.IsNullOrEmpty(mode.KeywordDefault))
{
var k = mode.Keywords
.SelectMany(x => Enumerable
.Range(1, x.Length - 1)
.Select(y => x.Remove(y))
.ToArray())
.Distinct()
.ToArray();
foreach (var i in k)
{
if (tokenTable.Lists.Any(x => x.Value.Any(y => y.Lexeme == i)))
{
continue;
}
tokenTable.AddLexemeCode(i, mode.KeywordDefault);
}
}
}
var generator = new LexerGenerator(tokenTable)
{
IgnoreCase = llexFile.IgnoreCase
};
var lexer = generator.Generate();
return(lexer
.Replace("{Lexer}", nameInfo.LexerName)
.Replace("{Token}", nameInfo.TokenName)
.Replace("{TokenType}", nameInfo.TokenTypeName)
.Replace("{LexerNamespace}", nameInfo.Namespace));
}