// from & in data
public override void Read(Tokeniser t, CharacterReader r)
{
char? c = t.ConsumeCharacterReference(null, false);
if (c == null)
{
t.Emit('&');
}
else
{
t.Emit(c.Value);
}
t.Transition(Data);
}
public void consume()
{
CharacterReader r = new CharacterReader("one");
Assert.AreEqual(0, r.Position);
Assert.AreEqual('o', r.Current());
Assert.AreEqual('o', r.Consume());
Assert.AreEqual(1, r.Position);
Assert.AreEqual('n', r.Current());
Assert.AreEqual(1, r.Position);
Assert.AreEqual('n', r.Consume());
Assert.AreEqual('e', r.Consume());
Assert.IsTrue(r.IsEmpty());
Assert.AreEqual(CharacterReader.EOF, r.Consume());
Assert.IsTrue(r.IsEmpty());
Assert.AreEqual(CharacterReader.EOF, r.Consume());
}
protected ParseErrorList _errors; // null when not tracking errors
protected virtual void InitialiseParse(string input, string baseUri, ParseErrorList errors)
{
if (input == null)
{
throw new ArgumentNullException("String input must not be null");
}
if (baseUri == null)
{
throw new ArgumentNullException("BaseURI must not be null");
}
_doc = new Document(baseUri);
_reader = new CharacterReader(input);
_errors = errors;
_tokeniser = new Tokeniser(_reader, errors);
_stack = new DescendableLinkedList<Element>();
this._baseUri = baseUri;
}
protected ParseErrorList _errors; // null when not tracking errors
protected virtual void InitialiseParse(string input, string baseUri, ParseErrorList errors)
{
if (input == null)
{
throw new ArgumentNullException("String input must not be null");
}
if (baseUri == null)
{
throw new ArgumentNullException("BaseURI must not be null");
}
_doc = new Document(baseUri);
_reader = new CharacterReader(input);
_errors = errors;
_tokeniser = new Tokeniser(_reader, errors);
_stack = new DescendableLinkedList <Element>();
this._baseUri = baseUri;
}
// in data state, gather characters until a character reference or tag is found
public override void Read(Tokeniser t, CharacterReader r)
{
switch (r.Current())
{
case '&':
t.AdvanceTransition(CharacterReferenceInData);
break;
case '<':
t.AdvanceTransition(TagOpen);
break;
case _nullChar:
t.Error(this); // NOT replacement character (oddly?)
t.Emit(r.Consume());
break;
case _eof:
t.Emit(new Token.EOF());
break;
default:
string data = r.ConsumeToAny('&', '<', _nullChar);
t.Emit(data);
break;
}
}
/// handles data in title, textarea etc
public override void Read(Tokeniser t, CharacterReader r)
{
switch (r.Current())
{
case '&':
t.AdvanceTransition(CharacterReferenceInRcData);
break;
case '<':
t.AdvanceTransition(RcDataLessThanSign);
break;
case _nullChar:
t.Error(this);
r.Advance();
t.Emit(_replacementChar);
break;
case _eof:
t.Emit(new Token.EOF());
break;
default:
string data = r.ConsumeToAny('&', '<', _nullChar);
t.Emit(data);
break;
}
}
public void consumeToChar()
{
CharacterReader r = new CharacterReader("One Two Three");
Assert.AreEqual("One ", r.ConsumeTo('T'));
Assert.AreEqual("", r.ConsumeTo('T')); // on Two
Assert.AreEqual('T', r.Consume());
Assert.AreEqual("wo ", r.ConsumeTo('T'));
Assert.AreEqual('T', r.Consume());
Assert.AreEqual("hree", r.ConsumeTo('T')); // consume to end
}
private void AnythingElse(Tokeniser t, CharacterReader r)
{
t.Emit("</" + t.DataBuffer.ToString());
t.Transition(ScriptDataEscaped);
}
public void unconsume()
{
CharacterReader r = new CharacterReader("one");
Assert.AreEqual('o', r.Consume());
Assert.AreEqual('n', r.Current());
r.Unconsume();
Assert.AreEqual('o', r.Current());
Assert.AreEqual('o', r.Consume());
Assert.AreEqual('n', r.Consume());
Assert.AreEqual('e', r.Consume());
Assert.IsTrue(r.IsEmpty());
r.Unconsume();
Assert.IsFalse(r.IsEmpty());
Assert.AreEqual('e', r.Current());
Assert.AreEqual('e', r.Consume());
Assert.IsTrue(r.IsEmpty());
Assert.AreEqual(CharacterReader.EOF, r.Consume());
r.Unconsume();
Assert.IsTrue(r.IsEmpty());
Assert.AreEqual(CharacterReader.EOF, r.Current());
}
public void matchesAny()
{
char[] scan = { ' ', '\n', '\t' };
CharacterReader r = new CharacterReader("One\nTwo\tThree");
Assert.IsFalse(r.MatchesAny(scan));
Assert.AreEqual("One", r.ConsumeToAny(scan));
Assert.IsTrue(r.MatchesAny(scan));
Assert.AreEqual('\n', r.Consume());
Assert.IsFalse(r.MatchesAny(scan));
}
public void matchesIgnoreCase()
{
CharacterReader r = new CharacterReader("One Two Three");
Assert.IsTrue(r.MatchesIgnoreCase("O"));
Assert.IsTrue(r.MatchesIgnoreCase("o"));
Assert.IsTrue(r.Matches('O'));
Assert.IsFalse(r.Matches('o'));
Assert.IsTrue(r.MatchesIgnoreCase("One Two Three"));
Assert.IsTrue(r.MatchesIgnoreCase("ONE two THREE"));
Assert.IsTrue(r.MatchesIgnoreCase("One"));
Assert.IsTrue(r.MatchesIgnoreCase("one"));
Assert.AreEqual('O', r.Consume());
Assert.IsFalse(r.MatchesIgnoreCase("One"));
Assert.IsTrue(r.MatchesIgnoreCase("NE Two Three"));
Assert.IsFalse(r.MatchesIgnoreCase("ne Two Three Four"));
Assert.AreEqual("ne Two Three", r.ConsumeToEnd());
Assert.IsFalse(r.MatchesIgnoreCase("ne"));
}
public void consumeLetterThenDigitSequence()
{
CharacterReader r = new CharacterReader("One12 Two &bar; qux");
Assert.AreEqual("One12", r.ConsumeLetterThenDigitSequence());
Assert.AreEqual(' ', r.Consume());
Assert.AreEqual("Two", r.ConsumeLetterThenDigitSequence());
Assert.AreEqual(" &bar; qux", r.ConsumeToEnd());
}
public void consumeToAny()
{
CharacterReader r = new CharacterReader("One &bar; qux");
Assert.AreEqual("One ", r.ConsumeToAny('&', ';'));
Assert.IsTrue(r.Matches('&'));
Assert.IsTrue(r.Matches("&bar;"));
Assert.AreEqual('&', r.Consume());
Assert.AreEqual("bar", r.ConsumeToAny('&', ';'));
Assert.AreEqual(';', r.Consume());
Assert.AreEqual(" qux", r.ConsumeToAny('&', ';'));
}
public Tokeniser(CharacterReader reader, ParseErrorList errors)
{
this._reader = reader;
this._errors = errors;
}
// from tagname <xxx
public override void Read(Tokeniser t, CharacterReader r)
{
char c = r.Consume();
switch (c)
{
case '\t':
case '\n':
case '\r':
case '\f':
case ' ':
break; // ignore whitespace
case '/':
t.Transition(SelfClosingStartTag);
break;
case '>':
t.EmitTagPending();
t.Transition(Data);
break;
case _nullChar:
t.Error(this);
t.TagPending.NewAttribute();
r.Unconsume();
t.Transition(AttributeName);
break;
case _eof:
t.EofError(this);
t.Transition(Data);
break;
case '"':
case '\'':
case '<':
case '=':
t.Error(this);
t.TagPending.NewAttribute();
t.TagPending.AppendAttributeName(c);
t.Transition(AttributeName);
break;
default: // A-Z, anything else
t.TagPending.NewAttribute();
r.Unconsume();
t.Transition(AttributeName);
break;
}
}
public override void Read(Tokeniser t, CharacterReader r)
{
if (r.MatchesLetter())
{
string name = r.ConsumeLetterSequence();
t.DataBuffer.Append(name.ToLowerInvariant());
t.Emit(name);
return;
}
char c = r.Consume();
switch (c)
{
case '\t':
case '\n':
case '\r':
case '\f':
case ' ':
case '/':
case '>':
if (t.DataBuffer.ToString().Equals("script"))
{
t.Transition(ScriptDataEscaped);
}
else
{
t.Transition(ScriptDataDoubleEscaped);
}
t.Emit(c);
break;
default:
r.Unconsume();
t.Transition(ScriptDataDoubleEscaped);
break;
}
}
public override void Read(Tokeniser t, CharacterReader r)
{
if (r.Matches('/'))
{
t.Emit('/');
t.CreateTempBuffer();
t.AdvanceTransition(ScriptDataDoubleEscapeEnd);
}
else
{
t.Transition(ScriptDataDoubleEscaped);
}
}
public override void Read(Tokeniser t, CharacterReader r)
{
char c = r.Consume();
switch (c)
{
case '-':
t.Emit(c);
break;
case '<':
t.Emit(c);
t.Transition(ScriptDataDoubleEscapedLessthanSign);
break;
case '>':
t.Emit(c);
t.Transition(ScriptData);
break;
case _nullChar:
t.Error(this);
t.Emit(_replacementChar);
t.Transition(ScriptDataDoubleEscaped);
break;
case _eof:
t.EofError(this);
t.Transition(Data);
break;
default:
t.Emit(c);
t.Transition(ScriptDataDoubleEscaped);
break;
}
}
public override void Read(Tokeniser t, CharacterReader r)
{
char c = r.Current();
switch (c)
{
case '-':
t.Emit(c);
t.AdvanceTransition(ScriptDataDoubleEscapedDash);
break;
case '<':
t.Emit(c);
t.AdvanceTransition(ScriptDataDoubleEscapedLessthanSign);
break;
case _nullChar:
t.Error(this);
r.Advance();
t.Emit(_replacementChar);
break;
case _eof:
t.EofError(this);
t.Transition(Data);
break;
default:
string data = r.ConsumeToAny('-', '<', _nullChar);
t.Emit(data);
break;
}
}
public void consumeToString()
{
CharacterReader r = new CharacterReader("One Two Two Four");
Assert.AreEqual("One ", r.ConsumeTo("Two"));
Assert.AreEqual('T', r.Consume());
Assert.AreEqual("wo ", r.ConsumeTo("Two"));
Assert.AreEqual('T', r.Consume());
Assert.AreEqual("wo Four", r.ConsumeTo("Qux"));
}
public void advance()
{
CharacterReader r = new CharacterReader("One Two Three");
Assert.AreEqual('O', r.Consume());
r.Advance();
Assert.AreEqual('e', r.Consume());
}
public override void Read(Tokeniser t, CharacterReader r)
{
if (r.MatchesLetter())
{
t.CreateTagPending(false);
t.TagPending.AppendTagName(char.ToLowerInvariant(r.Current()));
t.DataBuffer.Append(r.Current());
t.AdvanceTransition(ScriptDataEscapedEndTagName);
}
else
{
t.Emit("</");
t.Transition(ScriptDataEscaped);
}
}
public void consumeLetterSequence()
{
CharacterReader r = new CharacterReader("One &bar; qux");
Assert.AreEqual("One", r.ConsumeLetterSequence());
Assert.AreEqual(" &", r.ConsumeTo("bar;"));
Assert.AreEqual("bar", r.ConsumeLetterSequence());
Assert.AreEqual("; qux", r.ConsumeToEnd());
}
public Tokeniser(CharacterReader reader, ParseErrorList errors)
{
this._reader = reader;
this._errors = errors;
}
public void matches()
{
CharacterReader r = new CharacterReader("One Two Three");
Assert.IsTrue(r.Matches('O'));
Assert.IsTrue(r.Matches("One Two Three"));
Assert.IsTrue(r.Matches("One"));
Assert.IsFalse(r.Matches("one"));
Assert.AreEqual('O', r.Consume());
Assert.IsFalse(r.Matches("One"));
Assert.IsTrue(r.Matches("ne Two Three"));
Assert.IsFalse(r.Matches("ne Two Three Four"));
Assert.AreEqual("ne Two Three", r.ConsumeToEnd());
Assert.IsFalse(r.Matches("ne"));
}
public void mark()
{
CharacterReader r = new CharacterReader("one");
r.Consume();
r.Mark();
Assert.AreEqual('n', r.Consume());
Assert.AreEqual('e', r.Consume());
Assert.IsTrue(r.IsEmpty());
r.RewindToMark();
Assert.AreEqual('n', r.Consume());
}
public void containsIgnoreCase()
{
CharacterReader r = new CharacterReader("One TWO three");
Assert.IsTrue(r.ContainsIgnoreCase("two"));
Assert.IsTrue(r.ContainsIgnoreCase("three"));
// weird one: does not find one, because it scans for consistent case only
Assert.IsFalse(r.ContainsIgnoreCase("one"));
}
public override void Read(Tokeniser t, CharacterReader r)
{
if (r.MatchesLetter())
{
t.CreateTempBuffer();
t.DataBuffer.Append(char.ToLowerInvariant(r.Current()));
t.Emit("<" + r.Current());
t.AdvanceTransition(ScriptDataDoubleEscapeStart);
}
else if (r.Matches('/'))
{
t.CreateTempBuffer();
t.AdvanceTransition(ScriptDataEscapedEndTagOpen);
}
else
{
t.Emit('<');
t.Transition(ScriptDataEscaped);
}
}
public void nextIndexOfChar()
{
string input = "blah blah";
CharacterReader r = new CharacterReader(input);
Assert.AreEqual(-1, r.NextIndexOf('x'));
Assert.AreEqual(3, r.NextIndexOf('h'));
String pull = r.ConsumeTo('h');
Assert.AreEqual("bla", pull);
r.Consume();
Assert.AreEqual(2, r.NextIndexOf('l'));
Assert.AreEqual(" blah", r.ConsumeToEnd());
Assert.AreEqual(-1, r.NextIndexOf('x'));
}
public void nextIndexOfString()
{
string input = "One Two something Two Three Four";
CharacterReader r = new CharacterReader(input);
Assert.AreEqual(-1, r.NextIndexOf("Foo"));
Assert.AreEqual(4, r.NextIndexOf("Two"));
Assert.AreEqual("One Two ", r.ConsumeTo("something"));
Assert.AreEqual(10, r.NextIndexOf("Two"));
Assert.AreEqual("something Two Three Four", r.ConsumeToEnd());
Assert.AreEqual(-1, r.NextIndexOf("Two"));
}
public void consumeToEnd()
{
string input = "one two three";
CharacterReader r = new CharacterReader(input);
String toEnd = r.ConsumeToEnd();
Assert.AreEqual(input, toEnd);
Assert.IsTrue(r.IsEmpty());
}
public override void Read(Tokeniser t, CharacterReader r)
{
if (r.MatchesLetter())
{
string name = r.ConsumeLetterSequence();
t.TagPending.AppendTagName(name.ToLowerInvariant());
t.DataBuffer.Append(name);
return;
}
if (t.IsAppropriateEndTagToken() && !r.IsEmpty())
{
char c = r.Consume();
switch (c)
{
case '\t':
case '\n':
case '\r':
case '\f':
case ' ':
t.Transition(BeforeAttributeName);
break;
case '/':
t.Transition(SelfClosingStartTag);
break;
case '>':
t.EmitTagPending();
t.Transition(Data);
break;
default:
t.DataBuffer.Append(c);
AnythingElse(t, r);
break;
}
}
else
{
AnythingElse(t, r);
}
}
