internal bool ReadTo(string str)
{
if (SrcIndex > SrcLength - str.Length)
{
return(false);
}
var p = Src.IndexOf(str, SrcIndex);
if (p < 0)
{
return(false);
}
SrcIndex = p + 1;
return(true);
}
public bool advance(Block preblock, Block curblock)
{
tok = TokenType.TXT;
if (Src.Length == 0 && curblock.isLineHeadCmt == 1)
{
curblock.mRule = preblock.mRule;
tok = TokenType.MultiLineAllLine;
isNextLine = true;
return(true);
}
int c = reader.read();
if (c == -1)
{
tok = TokenType.EOS;
return(false);
}
switch (c)
{
case ' ':
case 0x3000:
case '\t':
break;
default:
if (curblock.isLineHeadCmt == 0) //0: 行頭がブロックコメントの内部ではない
{
if (Char.IsDigit((char)c))
{
reader.unread();
lexDigit();
break;
}
else if (Util.isIdentifierPart((char)c))
{
reader.unread();
lexKeyWord();
break;
}
else
{
reader.unread();
lexSymbol(curblock);
break;
}
}
else //1: 行頭がブロックコメントの内部
{
if (Offset - 1 == 0)
{
int index;
if ((index = Src.IndexOf(preblock.mRule.end, 0)) >= 0)
{
string end = preblock.mRule.end;
var rule = multiRuleEndDic[end];
if (rule.Detected(end, reader))
{
curblock.mRule = rule;
tok = TokenType.MultiLineEnd;
//int len = rule.getLen(end, reader);
int len = index + end.Length;
reader.setoffset(len);
OffsetLenAttr = new Tuple <int, int, Rule>(0, len, rule);
return(true);
}
}
else if (multiRuleDic.ContainsKey(preblock.mRule.start))
{
var rule = multiRuleDic[preblock.mRule.start];
curblock.mRule = preblock.mRule;
tok = TokenType.MultiLineAllLine;
OffsetLenAttr = new Tuple <int, int, Rule>(0, Src.Length, rule);
reader.setoffset(Src.Length);
return(true);
}
//{
// reader.unread();
// StringBuilder buf = new StringBuilder();
// while (true) {
// c = reader.read();
// if (c == -1) {
// break;
// }
// buf.Append((char)c);
// string s = buf.ToString();
// string end = preblock.mRule.end;
// if (s.EndsWith(end)) {
// if (multiRuleEndDic.ContainsKey(end)) {
// var rule = multiRuleEndDic[end];
// if (rule.Detected(end, reader)) {
// curblock.mRule = rule;
// //isNextLine = false;
// //tok = rule.token;
// tok = TokenType.MultiLineEnd;
// int len = rule.getLen(end, reader);
// reader.setoffset(len);
// OffsetLenAttr = new Tuple<int, int, Rule>(0, len, rule);
// //break;
// return true;
// }
// }
// }
// }
// if (c == -1 && preblock.mRule != null && multiRuleDic.ContainsKey(preblock.mRule.start)) {
// var enelem = multiRuleDic[preblock.mRule.start];
// curblock.mRule = preblock.mRule;
// //isNextLine = true;
// //tok = TokenType.MultiLineStart;
// tok = TokenType.MultiLineAllLine;
// OffsetLenAttr = new Tuple<int, int, Rule>(0, Src.Length, enelem);
// reader.setoffset(Src.Length);
// }
// break;
//}
}
else
{
if (Char.IsDigit((char)c))
{
reader.unread();
lexDigit();
}
else if (Util.isIdentifierPart((char)c))
{
reader.unread();
lexKeyWord();
}
else
{
reader.unread();
lexSymbol(curblock);
}
}
}
break;
}
return(true);
}