private void parse(Lexer lexer)
{
lexer.LastParsedByte = lexer.ReadByte();
for (; ;)
{
if (Lexer.IsEOL(lexer.LastParsedByte))
{
lexer.SkipEOL();
}
if (lexer.LastParsedByte == -1)
{
return;
}
lexer.ReadLexemeWithLastParsedByte();
if (lexer.CurrentLexemeEquals(Beginbfrange))
{
loadRange(lexer);
}
else if (lexer.CurrentLexemeEquals(Beginbfchar))
{
loadChar(lexer);
}
}
}
private int getLigature(Lexer lexer, out string value)
{
value = null;
if (lexer.LastParsedByte != '<')
{
return(-1);
}
int count = lexer.ReadHexValue();
if (Lexer.IsEOL(lexer.LastParsedByte))
{
lexer.SkipEOL();
}
if (count == 1)
{
return(lexer.GetLexemeHexByte());
}
else if (count == 2)
{
return(lexer.GetLexemeHex2Bytes());
}
if (count % 2 != 0)
{
return(-1);
}
value = lexer.GetLexemeHexLigature();
return(0);
}
private void loadChar(Lexer lexer)
{
if (Lexer.IsEOL(lexer.LastParsedByte))
{
lexer.SkipEOL();
}
string tmp;
for (; ;)
{
if (lexer.LastParsedByte == 'e')
{
return;
}
int code = getChar(lexer);
if (code < 0)
{
return;
}
int value = getLigature(lexer, out tmp);
if (value < 0)
{
return;
}
if (tmp != null)
{
initLigatures();
m_ligatures[(ushort)code] = tmp;
}
else
{
m_chars.Add(new BfChar((char)value, (ushort)code));
}
}
}
private int getChar(Lexer lexer)
{
if (lexer.LastParsedByte != '<')
{
return(-1);
}
int count = lexer.ReadHexValue();
if (Lexer.IsEOL(lexer.LastParsedByte))
{
lexer.SkipEOL();
}
if (count == 1)
{
return(lexer.GetLexemeHexByte());
}
else if (count == 2)
{
return(lexer.GetLexemeHex2Bytes());
}
return(-1);
}
private void loadRange(Lexer lexer)
{
if (Lexer.IsEOL(lexer.LastParsedByte))
{
lexer.SkipEOL();
}
for (; ;)
{
if (lexer.LastParsedByte == 'e')
{
return;
}
int first = getChar(lexer);
if (first < 0)
{
return;
}
int second = getChar(lexer);
if (second < 0)
{
return;
}
if (lexer.LastParsedByte == '[')
{
string tmp;
lexer.SkipEOL();
for (; ;)
{
if (lexer.LastParsedByte == ']')
{
lexer.SkipEOL();
break;
}
int code = getLigature(lexer, out tmp);
if (code < 0)
{
return;
}
if (tmp != null)
{
initLigatures();
m_ligatures[(ushort)code] = tmp;
}
else
{
m_chars.Add(new BfChar((char)code, (ushort)first));
}
++first;
}
}
else
{
int value = getChar(lexer);
if (value < 0)
{
return;
}
m_ranges.Add(new BfRange((char)value, (char)(value + second - first), (ushort)first, (ushort)second));
}
}
}