internal void SetBackgroundColor(TokenClassification tokenKind, ConsoleColor color)
{
switch (tokenKind)
{
case TokenClassification.None: DefaultTokenBackgroundColor = color; break;
case TokenClassification.Comment: CommentBackgroundColor = color; break;
case TokenClassification.Keyword: KeywordBackgroundColor = color; break;
case TokenClassification.String: StringBackgroundColor = color; break;
case TokenClassification.Operator: OperatorBackgroundColor = color; break;
case TokenClassification.Variable: VariableBackgroundColor = color; break;
case TokenClassification.Command: CommandBackgroundColor = color; break;
case TokenClassification.Parameter: ParameterBackgroundColor = color; break;
case TokenClassification.Type: TypeBackgroundColor = color; break;
case TokenClassification.Number: NumberBackgroundColor = color; break;
case TokenClassification.Member: MemberBackgroundColor = color; break;
}
}
/// <summary>
/// Standard constructor
/// </summary>
protected TokenDescription(int priority,
TokenDescriptionOptions options,
TokenClassification classification = TokenClassification.Unknown)
{
Priority = priority;
Options = options;
Classification = classification;
}
void AddToken(string sem, TokenClassification cl)
{
if (!tokenchain.AddToken(file.GetLineNum(), sem, cl))
{
//若未添加Token成功则进行错误处理
//TODO
}
}
/// <summary>
/// Create
/// </summary>
public static TokenDescription Create(TokenKeyWords keyWords,
int priority = DefaultPriority - 200,
TokenClassification classification = TokenClassification.Unknown)
{
return(new TokenDescriptionKeyWords(keyWords, priority)
{
Classification = classification
});
}
/// <summary>
/// Create
/// </summary>
public static TokenDescription Create(TokenDescriptionFunc.Locator entireLocator,
int priority = DefaultPriority,
TokenDescriptionOptions options = TokenDescriptionOptions.None,
TokenClassification classification = TokenClassification.Unknown)
{
return(new TokenDescriptionFunc(entireLocator, priority, options)
{
Classification = classification
});
}
/// <summary>
/// Create
/// </summary>
public static TokenDescription Create(string entirePattern,
int priority = DefaultPriority,
TokenDescriptionOptions options = TokenDescriptionOptions.None,
TokenClassification classification = TokenClassification.Unknown)
{
return(new TokenDescriptionRegex(entirePattern, priority, options)
{
Classification = classification
});
}
public bool AddToken(int line, string sem, TokenClassification type)
{
Token token = TokenFactor(line, sem, type);
if (token != null)
{
list.Add(token); return(true);
}
else
{
return(false);
}
}
/// <summary>
/// Create
/// </summary>
public static TokenDescription Create(IEnumerable <string> words,
int priority = DefaultPriority,
TokenDescriptionOptions options = TokenDescriptionOptions.None,
TokenClassification classification = TokenClassification.Unknown)
{
bool caseSensitive = !((options & TokenDescriptionOptions.IgnoreCase) == TokenDescriptionOptions.IgnoreCase);
TokenKeyWords keyWords = new TokenKeyWords(caseSensitive, words);
return(new TokenDescriptionKeyWords(keyWords, priority)
{
Classification = classification
});
}
static Token TokenFactor(int line, string sem, TokenClassification type)
{
if (type == TokenClassification.Ididentifier)
{
switch (sem)
{
case "main": return(new Token(line, sem, TokenType.Main));
case "if": return(new Token(line, sem, TokenType.If));
case "else": return(new Token(line, sem, TokenType.Else));
case "for": return(new Token(line, sem, TokenType.For));
case "int": return(new Token(line, sem, TokenType.Int));
case "void": return(new Token(line, sem, TokenType.Void));
case "return": return(new Token(line, sem, TokenType.Return));
default: return(new Token(line, sem, TokenType.ID));
}
}
else if (type == TokenClassification.Num)
{
return(new Token(line, sem, TokenType.NUM));
}
else if (type == TokenClassification.Sign)
{
switch (sem)
{
case "=": return(new Token(line, sem, TokenType.Assign));
case "<=": return(new Token(line, sem, TokenType.LowerEqual));
case "<": return(new Token(line, sem, TokenType.Lower));
case ">": return(new Token(line, sem, TokenType.Greater));
case ">=": return(new Token(line, sem, TokenType.GreaterEqual));
case "==": return(new Token(line, sem, TokenType.Equal));
case "!=": return(new Token(line, sem, TokenType.Unequal));
case "+": return(new Token(line, sem, TokenType.Plus));
case "-": return(new Token(line, sem, TokenType.Minus));
case "*": return(new Token(line, sem, TokenType.Multiply));
case "/": return(new Token(line, sem, TokenType.Divide));
case ";": return(new Token(line, sem, TokenType.EndSentence));
case ",": return(new Token(line, sem, TokenType.Dot));
case "[": return(new Token(line, sem, TokenType.RBL));
case "]": return(new Token(line, sem, TokenType.RBR));
case "(": return(new Token(line, sem, TokenType.CBL));
case ")": return(new Token(line, sem, TokenType.CBR));
case "{": return(new Token(line, sem, TokenType.FBL));
case "}": return(new Token(line, sem, TokenType.FBR));
default: return(null);
}
}
else
{
return(null);
}
}
internal void SetForegroundColor(TokenClassification tokenKind, ConsoleColor color)
{
switch (tokenKind)
{
case TokenClassification.None: DefaultTokenForegroundColor = color; break;
case TokenClassification.Comment: CommentForegroundColor = color; break;
case TokenClassification.Keyword: KeywordForegroundColor = color; break;
case TokenClassification.String: StringForegroundColor = color; break;
case TokenClassification.Operator: OperatorForegroundColor = color; break;
case TokenClassification.Variable: VariableForegroundColor = color; break;
case TokenClassification.Command: CommandForegroundColor = color; break;
case TokenClassification.Parameter: ParameterForegroundColor = color; break;
case TokenClassification.Type: TypeForegroundColor = color; break;
case TokenClassification.Number: NumberForegroundColor = color; break;
case TokenClassification.Member: MemberForegroundColor = color; break;
}
}
