/*
* Analog of match_glob() in jsstr.c
*/
private static void match_glob(
GlobData mdata, Context cx, Scriptable scope, int count, RegExpImpl reImpl) {
if (mdata.arrayobj == null) {
Scriptable s = ScriptableObject.getTopLevelScope(scope);
mdata.arrayobj = ScriptRuntime.newObject(cx, s, "Array", null);
}
SubString matchsub = reImpl.lastMatch;
String matchstr = matchsub.toString();
mdata.arrayobj.put(count, mdata.arrayobj, matchstr);
}
/*
* Analog of replace_glob() in jsstr.c
*/
private static void replace_glob(
GlobData rdata, Context cx, Scriptable scope, RegExpImpl reImpl, int leftIndex, int leftlen) {
int replen;
String lambdaStr;
if (rdata.lambda != null) {
// invoke lambda function with args lastMatch, $1, $2, ... $n,
// leftContext.length, whole string.
SubString[] parens = reImpl.parens;
int parenCount = (parens == null) ? 0 : parens.length;
Object[] args = new Object[parenCount + 3];
args[0] = reImpl.lastMatch.toString();
for (int i = 0; i < parenCount; i++) {
SubString sub = parens[i];
if (sub != null) {
args[i + 1] = sub.toString();
} else {
args[i + 1] = Undefined.instance;
}
}
args[parenCount + 1] = new Integer(reImpl.leftContext.length);
args[parenCount + 2] = rdata.str;
// This is a hack to prevent expose of reImpl data to
// JS function which can run new regexps modifing
// regexp that are used later by the engine.
// TODO: redesign is necessary
if (reImpl != ScriptRuntime.getRegExpProxy(cx)) Kit.codeBug();
RegExpImpl re2 = new RegExpImpl();
re2.multiline = reImpl.multiline;
re2.input = reImpl.input;
ScriptRuntime.setRegExpProxy(cx, re2);
try {
Scriptable parent = ScriptableObject.getTopLevelScope(scope);
Object result = rdata.lambda.call(cx, parent, parent, args);
lambdaStr = ScriptRuntime.toString(result);
} finally {
ScriptRuntime.setRegExpProxy(cx, reImpl);
}
replen = lambdaStr.length();
} else {
lambdaStr = null;
replen = rdata.repstr.length();
if (rdata.dollar >= 0) {
int[] skip = new int[1];
int dp = rdata.dollar;
do {
SubString sub = interpretDollar(cx, reImpl, rdata.repstr, dp, skip);
if (sub != null) {
replen += sub.length - skip[0];
dp += skip[0];
} else {
++dp;
}
dp = rdata.repstr.indexOf('$', dp);
} while (dp >= 0);
}
}
int growth = leftlen + replen + reImpl.rightContext.length;
StringBuffer charBuf = rdata.charBuf;
if (charBuf == null) {
charBuf = new StringBuffer(growth);
rdata.charBuf = charBuf;
} else {
charBuf.ensureCapacity(rdata.charBuf.length() + growth);
}
charBuf.append(reImpl.leftContext.charArray, leftIndex, leftlen);
if (rdata.lambda != null) {
charBuf.append(lambdaStr);
} else {
do_replace(rdata, cx, reImpl);
}
}
public int find_split(
Context cx,
Scriptable scope,
String target,
String separator,
Scriptable reObj,
int[] ip,
int[] matchlen,
boolean[] matched,
String[][] parensp) {
int i = ip[0];
int length = target.length();
int result;
int version = cx.getLanguageVersion();
NativeRegExp re = (NativeRegExp) reObj;
again:
while (true) { // imitating C label
/* JS1.2 deviated from Perl by never matching at end of string. */
int ipsave = ip[0]; // reuse ip to save object creation
ip[0] = i;
Object ret = re.executeRegExp(cx, scope, this, target, ip, NativeRegExp.TEST);
if (ret != Boolean.TRUE) {
// Mismatch: ensure our caller advances i past end of string.
ip[0] = ipsave;
matchlen[0] = 1;
matched[0] = false;
return length;
}
i = ip[0];
ip[0] = ipsave;
matched[0] = true;
SubString sep = this.lastMatch;
matchlen[0] = sep.length;
if (matchlen[0] == 0) {
/*
* Empty string match: never split on an empty
* match at the start of a find_split cycle. Same
* rule as for an empty global match in
* match_or_replace.
*/
if (i == ip[0]) {
/*
* "Bump-along" to avoid sticking at an empty
* match, but don't bump past end of string --
* our caller must do that by adding
* sep->length to our return value.
*/
if (i == length) {
if (version == Context.VERSION_1_2) {
matchlen[0] = 1;
result = i;
} else result = -1;
break;
}
i++;
continue again; // imitating C goto
}
}
// PR_ASSERT((size_t)i >= sep->length);
result = i - matchlen[0];
break;
}
int size = (parens == null) ? 0 : parens.length;
parensp[0] = new String[size];
for (int num = 0; num < size; num++) {
SubString parsub = getParenSubString(num);
parensp[0][num] = parsub.toString();
}
return result;
}