/////////////////////////////////////////////////////////////////////////////
public string GetMacroName( IInput input, out TokenMap tm )
{
// ******
RecognizedCharType charType = Next( input, out tm );
// ******
if( RecognizedCharType.TokenStart == charType ) {
Skip( input, tm );
return tm.Token;
}
// ******
return string.Empty;
}
/////////////////////////////////////////////////////////////////////////////
public string GetText( IInput input, TokenMap tm )
{
// ******
//
// offset index + length spans the entire match
//
string text = input.Next( tm.MatchLength );
return text;
}
/////////////////////////////////////////////////////////////////////////////
public virtual RecognizedCharType Next( IInput input, out TokenMap tm )
{
/*
powershell support for a leaing $ presumes that Next() is only called by
NmpScanner and that IsMacroIdentifierStartChar() and IsValidMacroIdentifier()
are never called to validate a powershell name - because they will not be validated
THIS IS PROBABLY INVALID
*/
// ******
RecognizedCharType rct = TestCharType( input );
//
// must tread tokens that start with '$' special - should do this check for
// alt token starts as well but since we're going to disallow alt token starts
// for macros as we rebuild this thing we'll ignore that
//
if( RecognizedCharType.TokenStartChar == rct
&& (SC.DOLLAR == input.Peek() || SC.HASH == input.Peek())
&& ! IsValidInnerTokenChar(input.Peek(1)) ) {
//
// a token that starts with a $ can ONLY be followed by a '.' or a valid token
//
if( SC.DOT != input.Peek(1) ) {
tm = null;
return RecognizedCharType.JustAChar;
}
}
// ******
if( RecognizedCharType.TokenStartChar == rct || RecognizedCharType.AltTokenStartChar == rct ) {
tm = new TokenMap();
// ******
if( RecognizedCharType.AltTokenStartChar == rct ) {
//
// skip "(#" to find token
//
tm.Token = PeekToken( input, altTokenStart.CountChars );
tm.MatchLength = altTokenStart.CountChars + tm.Token.Length;
tm.IsAltTokenFormat = true;
}
else {
tm.Token = PeekToken( input, 0 );
tm.MatchLength = tm.Token.Length;
tm.IsAltTokenFormat = false;
}
// ******
return RecognizedCharType.TokenStart;
}
// ******
tm = null;
return rct;
}
/////////////////////////////////////////////////////////////////////////////
public void Skip( IInput input, TokenMap tm )
{
// ******
int skipCount = tm.MatchLength;
input.Skip( skipCount );
}