/// <summary>Expresses an LES token as a string.</summary>
/// <remarks>Note that some Tokens do not contain enough information to
/// reconstruct a useful token string, e.g. comment tokens do not store the
/// comment but merely contain the location of the comment in the source code.
/// For performance reasons, a <see cref="Token"/> does not have a reference
/// to its source file, so this method cannot return the original string.
/// <para/>
/// The results are undefined if the token was not produced by <see cref="Les2Lexer"/>.
/// </remarks>
public static string ToString(Token t)
{
StringBuilder sb = new StringBuilder();
switch (t.Type())
{
case TT.Newline: return("\n");
case TT.SLComment: return("//\n");
case TT.MLComment: return("/**/");
case TT.Literal:
return(Les2Printer.PrintLiteral(t.Value, t.Style));
case TT.BQOperator:
return(Les2Printer.PrintString((t.Value ?? "").ToString(), '`', false));
case TT.Id:
return(Les2Printer.PrintId(t.Value as Symbol ?? GSymbol.Empty));
case TT.LParen: return("(");
case TT.RParen: return(")");
case TT.LBrack: return("[");
case TT.RBrack: return("]");
case TT.LBrace: return("{");
case TT.RBrace: return("}");
//case TT.OpenOf: return ".[";
case TT.Shebang: return("#!" + t.Value + "\n");
case TT.Dot:
case TT.Assignment:
case TT.NormalOp:
case TT.PreOrSufOp:
case TT.PrefixOp:
//case TT.SuffixOp:
case TT.At:
case TT.Comma:
case TT.Semicolon:
case TT.Not:
var name = (t.Value ?? "(punc missing value)").ToString();
return(name);
default:
return("@unknown_token");
}
}
/// <summary>Expresses a token as a string, using LES printers for identifiers and literals.</summary>
/// <remarks>Note that some Tokens do not contain enough information to
/// reconstruct a useful token string, e.g. comment tokens do not store the
/// comment but merely contain the location of the comment in the source code.
/// For performance reasons, a <see cref="Token"/> does not have a reference
/// to its source file, so this method cannot return the original string.
/// </remarks>
public static string ToString(Token t)
{
StringBuilder sb = new StringBuilder();
switch (t.Kind)
{
case TokenKind.Spaces: return((t.Value ?? " ").ToString());
case TokenKind.Comment:
if (t.Type() == TokenType.SLComment)
{
return("// (comment)");
}
else
{
return("/* (comment) */");
}
case TokenKind.Id:
return(Les2Printer.PrintId(t.Value as Symbol ?? GSymbol.Empty));
case TokenKind.Literal:
return(Les2Printer.PrintLiteral(t.Value, t.Style));
}
if (t.Value != null)
{
if (t.Type() == TokenType.BQOperator)
{
return(Les2Printer.PrintString((t.Value ?? "").ToString(), '`', false));
}
else if (t.Type() == TokenType.Shebang)
{
return("#!" + t.Value.ToString() + "\n");
}
return(t.Value.ToString());
}
switch (t.Kind)
{
case TokenKind.LParen: return("(");
case TokenKind.RParen: return(")");
case TokenKind.LBrack: return("[");
case TokenKind.RBrack: return("]");
case TokenKind.LBrace: return("{");
case TokenKind.RBrace: return("}");
case TokenKind.Indent: return("(Indent)");
case TokenKind.Dedent: return("(Dedent)");
case TokenKind.Dot: return("(Dot)");
case TokenKind.Assignment: return("(Assignment)");
case TokenKind.Operator: return("(Operator)");
case TokenKind.Separator: return("(Separator)");
case TokenKind.AttrKeyword: return("(AttrKeyword)");
case TokenKind.TypeKeyword: return("(TypeKeyword)");
case TokenKind.OtherKeyword: return("(OtherKeyword)");
}
return("(Type " + t.TypeInt + ")");
}
