internal static bool IsProcessingInstructionName(string name)
{
if (name == null)
{
return(false);
}
int nameLength = name.Length;
int position = 0;
XmlCharType xmlCharType = XmlCharType.Instance;
while (position < nameLength && xmlCharType.IsWhiteSpace(name[position]))
{
position++;
}
if (position >= nameLength)
{
return(false);
}
if (position < nameLength && !xmlCharType.IsStartNCNameChar(name[position]))
{
return(false);
}
while (position < nameLength && xmlCharType.IsNCNameChar(name[position]))
{
position++;
}
while (position < nameLength && xmlCharType.IsWhiteSpace(name[position]))
{
position++;
}
if (position < nameLength)
{
return(false);
}
if (nameLength == 3 &&
(name[0] == CharX || name[0] == Charx) &&
(name[1] == CharM || name[1] == Charm) &&
(name[2] == CharL || name[2] == Charl)
)
{
return(false);
}
return(true);
}
public static bool ValidatePrefix(string prefix)
{
if (prefix.Length == 0)
{
return(false);
}
XmlCharType xmlCharType = XmlCharType.Instance;
if (!xmlCharType.IsStartNCNameChar(prefix[0]))
{
return(false);
}
for (int i = 1; i < prefix.Length; i++)
{
if (!xmlCharType.IsNCNameChar(prefix[i]))
{
return(false);
}
}
return(true);
}
//
// Parsing qualified names
//
private static string ParseNCName(string qname, ref int position)
{
int qnameLength = qname.Length;
int nameStart = position;
if (
qnameLength == position || // Zero length ncname
!XmlCharType.IsStartNCNameChar(qname[position]) // Start from invalid char
)
{
throw new XsltException(Res.Xslt_InvalidQName, qname);
}
position++;
while (position < qnameLength && XmlCharType.IsNCNameChar(qname[position]))
{
position++;
}
return(qname.Substring(nameStart, position - nameStart));
}
public bool NextLex()
{
SkipSpace();
switch (this.CurerntChar)
{
case '\0':
kind = LexKind.Eof;
return(false);
case ',':
case '@':
case '(':
case ')':
case '|':
case '*':
case '[':
case ']':
case '+':
case '-':
case '=':
case '#':
case '$':
kind = (LexKind)Convert.ToInt32(this.CurerntChar, CultureInfo.InvariantCulture);
NextChar();
break;
case '<':
kind = LexKind.Lt;
NextChar();
if (this.CurerntChar == '=')
{
kind = LexKind.Le;
NextChar();
}
break;
case '>':
kind = LexKind.Gt;
NextChar();
if (this.CurerntChar == '=')
{
kind = LexKind.Ge;
NextChar();
}
break;
case '!':
kind = LexKind.Bang;
NextChar();
if (this.CurerntChar == '=')
{
kind = LexKind.Ne;
NextChar();
}
break;
case '.':
kind = LexKind.Dot;
NextChar();
if (this.CurerntChar == '.')
{
kind = LexKind.DotDot;
NextChar();
}
else if (xmlCharType.IsDigit(this.CurerntChar))
{
kind = LexKind.Number;
numberValue = ScanFraction();
}
break;
case '/':
kind = LexKind.Slash;
NextChar();
if (this.CurerntChar == '/')
{
kind = LexKind.SlashSlash;
NextChar();
}
break;
case '"':
case '\'':
this.kind = LexKind.String;
this.stringValue = ScanString();
break;
default:
if (xmlCharType.IsDigit(this.CurerntChar))
{
kind = LexKind.Number;
numberValue = ScanNumber();
}
else if (xmlCharType.IsStartNCNameChar(this.CurerntChar))
{
kind = LexKind.Name;
this.name = ScanName();
this.prefix = string.Empty;
// "foo:bar" is one lexem not three because it doesn't allow spaces in between
// We should distinct it from "foo::" and need process "foo ::" as well
if (this.CurerntChar == ':')
{
NextChar();
// can be "foo:bar" or "foo::"
if (this.CurerntChar == ':') // "foo::"
{
NextChar();
kind = LexKind.Axe;
}
else // "foo:*", "foo:bar" or "foo: "
{
this.prefix = this.name;
if (this.CurerntChar == '*')
{
NextChar();
this.name = "*";
}
else if (xmlCharType.IsStartNCNameChar(this.CurerntChar))
{
this.name = ScanName();
}
else
{
throw XPathException.Create(Res.Xp_InvalidName, SourceText);
}
}
}
else
{
SkipSpace();
if (this.CurerntChar == ':')
{
NextChar();
// it can be "foo ::" or just "foo :"
if (this.CurerntChar == ':')
{
NextChar();
kind = LexKind.Axe;
}
else
{
throw XPathException.Create(Res.Xp_InvalidName, SourceText);
}
}
}
SkipSpace();
this.canBeFunction = (this.CurerntChar == '(');
}
else
{
throw XPathException.Create(Res.Xp_InvalidToken, SourceText);
}
break;
}
return(true);
}
public bool NextLex()
{
prevLexEnd = curIndex;
SkipSpace();
lexStart = curIndex;
switch (curChar)
{
case '\0':
kind = LexKind.Eof;
return(false);
case ',':
case '@':
case '(':
case ')':
case '|':
case '*':
case '[':
case ']':
case '+':
case '-':
case '=':
case '#':
case '$':
case '{':
case '}':
kind = (LexKind)curChar;
NextChar();
break;
case '<':
kind = LexKind.Lt;
NextChar();
if (curChar == '=')
{
kind = LexKind.Le;
NextChar();
}
break;
case '>':
kind = LexKind.Gt;
NextChar();
if (curChar == '=')
{
kind = LexKind.Ge;
NextChar();
}
break;
case '!':
kind = LexKind.Bang;
NextChar();
if (curChar == '=')
{
kind = LexKind.Ne;
NextChar();
}
break;
case '.':
kind = LexKind.Dot;
NextChar();
if (curChar == '.')
{
kind = LexKind.DotDot;
NextChar();
}
else if (xmlCharType.IsDigit(curChar))
{
ScanFraction();
}
break;
case '/':
kind = LexKind.Slash;
NextChar();
if (curChar == '/')
{
kind = LexKind.SlashSlash;
NextChar();
}
break;
case '"':
case '\'':
ScanString();
break;
default:
if (xmlCharType.IsDigit(curChar))
{
ScanNumber();
}
else if (xmlCharType.IsStartNCNameChar(curChar))
{
kind = LexKind.Name;
this.name = ScanNCName();
this.prefix = string.Empty;
int saveSourceIndex = curIndex;
// "foo:bar" is one lexem not three because it doesn't allow spaces in between
// We should distinct it from "foo::" and need process "foo ::" as well
if (curChar == ':')
{
NextChar();
// can be "foo:bar" or "foo::"
if (curChar == ':') // "foo::"
{
NextChar();
kind = LexKind.Axis;
}
else // "foo:*", "foo:bar" or "foo: "
{
if (curChar == '*')
{
NextChar();
this.prefix = this.name;
this.name = "*";
}
else if (xmlCharType.IsStartNCNameChar(curChar))
{
this.prefix = this.name;
this.name = ScanNCName();
}
else
{
// this lex is something like "foo:?". Let's it be recognized as name "foo"
// and leave ":-" to be scaned late as unknown lex.
SetSourceIndex(saveSourceIndex);
}
}
}
else
{
SkipSpace();
if (curChar == ':')
{
NextChar();
// it can be "foo ::" or just "foo :"
if (curChar == ':')
{
NextChar();
kind = LexKind.Axis;
}
else
{
// this lex is something like "foo :?". Let's it be recognized as name "foo"
// and leave ":-" to be scaned late as unknown lex.
SetSourceIndex(saveSourceIndex);
}
}
}
// look ahead for '('. I don't want curIndex to be moved by SkipSpace() here to be able to detect presize lexem size.
saveSourceIndex = curIndex;
SkipSpace();
this.canBeFunction = (curChar == '(');
SetSourceIndex(saveSourceIndex);
}
else
{
kind = LexKind.Unknown;
NextChar();
}
break;
}
return(true);
}
