public static int ReplaceFirst(Matcher m,Substitution substitution,TextWriter _out)
{
try {
return ReplaceFirst(m,substitution,Wrap(_out));
} catch(WriteException e) {
throw e.reason;
}
}
public static int ReplaceFirst(Matcher m,Substitution substitution,TextBuffer dest)
{
int c=0;
if(m.Find()) {
if(m.Start>0) m.Group(Matcher.PREFIX,dest);
substitution.AppendSubstitution(m,dest);
c++;
m.SetTarget(m,Matcher.SUFFIX);
}
m.Group(Matcher.TARGET,dest);
return c;
}
public static int Replace(Matcher m,Substitution substitution,TextBuffer dest)
{
bool firstPass=true;
int c=0;
while(m.Find()) {
if(m.End==0 && !firstPass) continue; //allow to Replace at "^"
if(m.Start>0) m.Group(Matcher.PREFIX,dest);
substitution.AppendSubstitution(m,dest);
c++;
m.SetTarget(m,Matcher.SUFFIX);
firstPass=false;
}
m.Group(Matcher.TARGET,dest);
return c;
}
static Element MakeQueue(Matcher refMatcher)
{
if(refMatcher.Find()){
Element element;
if(refMatcher.IsCaptured(NAME_ID)){
char c=refMatcher.CharAt(0,NAME_ID);
if(c=='&') {
element = new IntRefHandler(refMatcher.Prefix, 0);
} else if(char.IsDigit(c)){
element = new IntRefHandler(refMatcher.Prefix, Convert.ToInt32(refMatcher.Group(NAME_ID)));
} else
element = new StringRefHandler(refMatcher.Prefix, refMatcher.Group(NAME_ID));
} else {
//escaped char
element = new PlainElement(refMatcher.Prefix, refMatcher.Group(ESC_ID));
}
refMatcher.SetTarget(refMatcher, Matcher.SUFFIX);
element.next = MakeQueue(refMatcher);
return element;
} else return new PlainElement(refMatcher.Target);
}
public Matcher Matcher(TextReader text, int length)
{
Matcher m = new Matcher(this);
m.SetTarget(text, length);
return m;
}
public Matcher Matcher(MatchResult res, int groupId)
{
Matcher m = new Matcher(this);
if(res is Matcher){
m.SetTarget((Matcher)res, groupId);
} else{
m.SetTarget(res.TargetChars, res.GetStart(groupId)+res.TargetStart, res.GetLength(groupId));
}
return m;
}
public Matcher Matcher(char[] data, int start, int end)
{
Matcher m = new Matcher(this);
m.SetTarget(data, start, end);
return m;
}
public Matcher Matcher(string s)
{
Matcher m = new Matcher(this);
m.Target = s;
return m;
}
public void SetTarget(Matcher m, int groupId)
{
MemReg mr=m.Bounds(groupId);
if(mr==null) throw new ArgumentException("group #"+groupId+" is not assigned");
data=m.data;
offset=mr._in;
end=mr._out;
cache=m.cache;
cacheLength=m.cacheLength;
cacheOffset=m.cacheOffset;
if(m!=this){
shared=true;
m.shared=true;
}
Init();
}
public SimpleMatchIterator(Matcher matcher, int options)
{
this.matcher = matcher;
this.options = options;
}
public PerlSubstitution(string s)
{
Matcher refMatcher = new Matcher(refPtn);
refMatcher.Target = s;
queueEntry = MakeQueue(refMatcher);
}