public List <LineTokenCollection> Scan(SourceReader sr, ContextFile fileContext, int startLine)
{
Reset(sr, fileContext);
line = startLine;
curToks = new LineTokenCollection();
//report("开始");
//InitLineFirst();
while (ch != END)
{
//report("ch="+ch+" "+(int)ch);
//if (line == 33 )// ch == '控' && line == 18)
//{
// //report("col:" + col);
// Widther.IsDebug = true;
//}
//else if ( line == 34)// ch == '控' && line == 18)
//{
// Widther.IsDebug = true;
//}
//else
//{
// Widther.IsDebug = false;
//}
char nextChar = GetNext();
if (ch == ' ' || ch == '\t')
{
//report("SkipSpace");
SkipWhiteSpace();
}
else if (ch == '/' && nextChar == '/')
{
SkipSingleLineComment();
}
else if (ch == '/' && nextChar == '*')
{
SkipMutilLineComment();
}
else if (ch == '/')
{
LexTokenSymbol tok = new LexTokenSymbol(line, col, TokenKindSymbol.DIV);// { Col = col, Line = line, };
curToks.Add(tok);
Next();
}
else if (ch == '"' || ch == '“' || ch == '”')
{
string str = scanString();
LexTokenLiteral tok = new LexTokenLiteral(line, col - 1, TokenKindLiteral.LiteralString, str);// { Col = col - 1, Line = line, Text = str, Kind = TokenKindSymbol.LiteralString };
curToks.Add(tok);
}
else if (ch == '\r' && nextChar == '\n')
{
Next(); Next();
AddLineToken();//lineTokens.Add(curToks);
curToks = new LineTokenCollection();
ScanNewLine();
}
else if (ch == '\n' || ch == '\r')
{
Next();
AddLineToken(); //lineTokens.Add(curToks);
curToks = new LineTokenCollection();
ScanNewLine();
}
else if ("0123456789".IndexOf(ch) != -1)
{
string str = scanNumber();
var temp = col;
if (StringHelper.IsInt(str))
{
LexTokenLiteral tok = new LexTokenLiteral(line, temp, TokenKindLiteral.LiteralInt, str);
curToks.Add(tok);
}
else if (StringHelper.IsFloat(str))
{
LexTokenLiteral tok = new LexTokenLiteral(line, temp, TokenKindLiteral.LiteralFloat, str);
curToks.Add(tok);
}
else
{
lexError(str + "不是正确的数字");
}
}
else if (ch == '+')
{
LexTokenSymbol tok = new LexTokenSymbol(line, col, TokenKindSymbol.ADD);
curToks.Add(tok);
Next();
}
else if (ch == '-')
{
LexTokenSymbol tok = new LexTokenSymbol(line, col, TokenKindSymbol.SUB);
curToks.Add(tok);
Next();
}
else if ((ch == '=') && (nextChar == '='))
{
LexTokenSymbol tok = new LexTokenSymbol(line, col, TokenKindSymbol.EQ);
curToks.Add(tok);
Next(); Next();
}
else if ((ch == '=') && (nextChar == '>'))
{
LexTokenSymbol tok = new LexTokenSymbol(line, col, TokenKindSymbol.AssignTo);
curToks.Add(tok);
Next(); Next();
}
else if ((ch == '='))
{
LexTokenSymbol tok = new LexTokenSymbol(line, col, TokenKindSymbol.Assign);
curToks.Add(tok);
Next();
}
else if ((ch == '*'))
{
LexTokenSymbol tok = new LexTokenSymbol(line, col, TokenKindSymbol.MUL);
curToks.Add(tok);
Next();
}
else if (ch == ',' || ch == '，')
{
LexTokenSymbol tok = new LexTokenSymbol(line, col, TokenKindSymbol.Comma);
curToks.Add(tok);
Next();
}
else if (ch == ';' || ch == '；')
{
LexTokenSymbol tok = new LexTokenSymbol(line, col, TokenKindSymbol.Semi);
curToks.Add(tok);
Next();
}
else if (ch == '(' || ch == '（')
{
LexTokenSymbol tok = new LexTokenSymbol(line, col, TokenKindSymbol.LBS);
curToks.Add(tok);
Next();
}
else if (ch == ')' || ch == '）')
{
LexTokenSymbol tok = new LexTokenSymbol(line, col, TokenKindSymbol.RBS);
curToks.Add(tok);
Next();
}
else if (ch == '>' && GetNext() == '=')
{
LexTokenSymbol tok = new LexTokenSymbol(line, col, TokenKindSymbol.GE);
curToks.Add(tok);
Next(); Next();
}
else if (ch == '>')
{
LexTokenSymbol tok = new LexTokenSymbol(line, col, TokenKindSymbol.GT);
curToks.Add(tok);
Next();
}
else if (ch == '<' && nextChar == '=')
{
LexTokenSymbol tok = new LexTokenSymbol(line, col, TokenKindSymbol.LE);
curToks.Add(tok);
Next(); Next();
}
else if (ch == '<')
{
LexTokenSymbol tok = new LexTokenSymbol(line, col, TokenKindSymbol.LT);
curToks.Add(tok);
Next();
}
else if ((nextChar == '!' || nextChar == '！') && (nextChar == '=' || nextChar == '＝'))
{
LexTokenSymbol tok = new LexTokenSymbol(line, col, TokenKindSymbol.NE);
curToks.Add(tok);
Next(); Next();
}
else if (ch == ':' || ch == '：')
{
LexTokenSymbol tok = new LexTokenSymbol(line, col, TokenKindSymbol.Colon);// { Col = col, Line = line, Kind = TokenKindSymbol.Colon };
curToks.Add(tok);
Next();
}
else if ((ch >= 'A' && ch <= 'Z') /*|| (ch == '_') */ || (ch >= 'a' && ch <= 'z') || ChineseHelper.IsChineseLetter(ch))
{
var tempCol = col;
var tempLine = line;
LexToken t1 = scanIdentToken();
if (t1.Text == "说明")
{
if (ch == ':' || ch == '：')
{
SkipSingleLineComment();
continue;;
}
}
addIdentOrKey(t1);
}
else if (char.IsControl(ch))
{
while (char.IsControl(ch) && ch != END)
{
Next();
if ((int)ch == 13)
{
ScanNewLine();
}
}
}
else
{
lexError("无法识别" + (int)ch + ": '" + ch + "' ");
Next();
}
}
if (curToks != null && curToks.Count > 0)
{
AddLineToken();
}
return(lineTokens);
}
public Tokenizer(SourceReader sr)
{
reader = sr;
line = 1;
col = 1;
}
public List <Token> Scan(SourceReader sr, ContextFile fileContext)
{
Reset(sr, fileContext);
//report("开始");
tokenList.Clear();
while (ch != END)
{
//report("ch="+ch+" "+(int)ch);
char nextChar = GetNext();
if (ch == ' ' || ch == '\t')
{
//report("SkipSpace");
SkipWhiteSpace();
}
else if (ch == '/' && nextChar == '/')
{
SkipSingleLineComment();
}
else if (ch == '/' && nextChar == '*')
{
SkipMutilLineComment();
}
else if (ch == '/')
{
Token tok = new Token()
{
Col = col, Line = line, Kind = TokenKind.DIV
};
tokenList.Add(tok);
Next();
}
else if (ch == '"' || ch == '“' || ch == '”')
{
string str = scanString();
Token tok = new Token()
{
Col = col - 1, Line = line, Text = str, Kind = TokenKind.LiteralString
};
tokenList.Add(tok);
}
else if (ch == '\r' && nextChar == '\n')
{
Token tok = ScanNewLine(2);// new Token() { Col = col, Line = line, Text = "\r\n", Kind = TokenKind.NewLine };
//report("扫描换行符");
//Next(); Next();
//col = 1;
//line++;
tokenList.Add(tok);
}
else if (ch == '\n' || ch == '\r')
{
Token tok = ScanNewLine(1);
tokenList.Add(tok);
//SkipLine();
//Token tok = new Token() { Col = col, Line = line, Text = "\r\n", Kind = TokenKind.NewLine };
//Next();
//col = 1;
//line++;
//tokenList.Add(tok);
}
else if ("0123456789".IndexOf(ch) != -1)
{
string str = scanNumber();
var temp = col;
if (StringHelper.IsInt(str))
{
Token tok = new Token()
{
Col = temp, Line = line, Text = str, Kind = TokenKind.LiteralInt
};
tokenList.Add(tok);
}
else if (StringHelper.IsFloat(str))
{
Token tok = new Token()
{
Col = temp, Line = line, Text = str, Kind = TokenKind.LiteralFloat
};
tokenList.Add(tok);
}
else
{
lexError(str + "不是正确的数字");
}
}
else if (ch == '+' || ch == '＋')
{
Token tok = new Token()
{
Col = col, Line = line, Kind = TokenKind.ADD
};
tokenList.Add(tok);
Next();
}
else if (ch == '-' || ch == '－')
{
Token tok = new Token()
{
Col = col, Line = line, Kind = TokenKind.SUB
};
tokenList.Add(tok);
Next();
}
else if ((ch == '=' || ch == '＝') && (nextChar == '=' || nextChar == '＝'))
{
Token tok = new Token()
{
Col = col, Line = line, Kind = TokenKind.EQ
};
tokenList.Add(tok);
Next(); Next();
}
else if ((ch == '=' || ch == '＝') && (nextChar == '>'))
{
Token tok = new Token()
{
Col = col, Line = line, Kind = TokenKind.AssignTo
};
tokenList.Add(tok);
Next(); Next();
}
else if ((ch == '=' || ch == '＝'))
{
Token tok = new Token()
{
Col = col, Line = line, Kind = TokenKind.Assign
};
tokenList.Add(tok);
Next();
}
else if ((ch == '*'))
{
Token tok = new Token()
{
Col = col, Line = line, Kind = TokenKind.MUL
};
tokenList.Add(tok);
Next();
}
else if (ch == ',' || ch == '，')
{
Token tok = new Token()
{
Col = col, Line = line, Kind = TokenKind.Comma
};
tokenList.Add(tok);
Next();
}
else if (ch == ';' || ch == '；')
{
Token tok = new Token()
{
Col = col, Line = line, Kind = TokenKind.Semi
};
tokenList.Add(tok);
Next();
}
else if (ch == '(' || ch == '（')
{
Token tok = new Token()
{
Col = col, Line = line, Kind = TokenKind.LBS
};
tokenList.Add(tok);
Next();
}
else if (ch == ')' || ch == '）')
{
Token tok = new Token()
{
Col = col, Line = line, Kind = TokenKind.RBS
};
tokenList.Add(tok);
Next();
}
else if (ch == '>' && GetNext() == '=')
{
Token tok = new Token()
{
Col = col, Line = line, Kind = TokenKind.GE
};
tokenList.Add(tok);
Next(); Next();
}
else if (ch == '>')
{
Token tok = new Token()
{
Col = col, Line = line, Kind = TokenKind.GT
};
tokenList.Add(tok);
Next();
}
else if (ch == '<' && nextChar == '=')
{
Token tok = new Token()
{
Col = col, Line = line, Kind = TokenKind.LE
};
tokenList.Add(tok);
Next(); Next();
}
else if (ch == '<')
{
Token tok = new Token()
{
Col = col, Line = line, Kind = TokenKind.LT
};
tokenList.Add(tok);
Next();
}
else if ((nextChar == '!' || nextChar == '！') && (nextChar == '=' || nextChar == '＝'))
{
Token tok = new Token()
{
Col = col, Line = line, Kind = TokenKind.NE
};
tokenList.Add(tok);
Next(); Next();
}
/*else if (ch == ':' && nextChar == ':')
* {
* Token tok = new Token() { Col = col, Line = line, Kind = TokenKind.Colond };
* tokenList.Add(tok);
* Next(); Next();
* }*/
else if (ch == ':' || ch == '：')
{
Token tok = new Token()
{
Col = col, Line = line, Kind = TokenKind.Colon
};
tokenList.Add(tok);
Next();
}
else if ((ch >= 'A' && ch <= 'Z') /*|| (ch == '_') */ || (ch >= 'a' && ch <= 'z') || ChineseHelper.IsChineseLetter(ch))
{
var tempCol = col;
var tempLine = line;
Token t1 = scanKeyIdent();
//if (t1.GetText().StartsWith("否则如果") || t1.GetText().StartsWith("否则") || t1.GetText().StartsWith("如果"))
//{
// Console.WriteLine("否则如果");
//}
//tokenList.Add(t1);
if (t1.GetText() == "说明")
{
// char nchar = GetNext();
if (ch == ':' || ch == '：')
{
SkipSingleLineComment();
continue;;
}
}
addIdentOrKey(t1);
}
else if (char.IsControl(ch))
{
while (char.IsControl(ch) && ch != END)
{
Next();
if ((int)ch == 13)
{
line++;
col = 1;
}
}
}
else
{
lexError("无法识别" + (int)ch + ": '" + ch + "' ");
Next();
}
}
return(tokenList);
}
