/** Convert to a String. */
public final String toString() {
StringBuffer sb = new StringBuffer();
sb.append(toString1());
ReplaceRule rr = this.next;
while (rr != null) {
sb.append(rr.toString1());
rr = rr.next;
}
return sb.toString();
}
public final Object clone() {
ReplaceRule x = (ReplaceRule) clone1();
ReplaceRule xsav = x;
ReplaceRule y = this;
while (y.next != null) {
x.next = (ReplaceRule) y.next.clone1();
x.name = y.name;
x = x.next;
y = y.next;
}
return xsav;
}
/** Add another ReplaceRule to the linked list. */
public void addRule(ReplaceRule r) {
if (next == null) next = r;
else next.addRule(r);
}
static ReplaceRule add(ReplaceRule head, ReplaceRule adding) {
if (head == null) return head = adding;
head.addRule(adding);
return head;
}
public static void define(String s, ReplaceRule r) {
defs.put(s, r);
r.name = s;
}
/**
* Compile a ReplaceRule using the text that would go between the second and third /'s in a
* typical substitution pattern in Perl: s/ ... / <i>The argument to ReplaceRule.perlCode</i> /.
*/
public static ReplaceRule perlCode(String s) {
// String sav_backGs = Regex.backGs;
// int sav_backGto = Regex.backGto;
try {
int mf = 0, mt = 0;
Regex gv = getv();
ReplaceRule head = null;
Object tmp = null;
while (gv.searchFrom(s, mt)) {
int off = Regex.BackRefOffset - 1;
mf = gv.matchedFrom();
if (mf > mt) head = add(head, new StringRule(s.substring(mt, mf)));
String var = null;
if ((var = gv.stringMatched(1 + off)) != null
|| (var = gv.stringMatched(2 + off)) != null
|| (var = gv.stringMatched(5 + off)) != null) {
int d = 0;
for (int i = 0; i < var.length(); i++) d = 8 * d + (var.charAt(i) - '0');
if (var.length() == 1) head = add(head, new BackRefRule(d));
else head = new StringRule("" + (char) d);
} else if ((var = gv.stringMatched(10 + off)) != null) {
if ("QELlUu".indexOf(var) >= 0) head = add(head, new CodeRule(var.charAt(0)));
else head = add(head, new StringRule(var));
} else if ((var = gv.stringMatched(3 + off)) != null
|| (var = gv.stringMatched(4 + off)) != null
|| (var = gv.stringMatched(6 + off)) != null) {
String arg = "";
int pc;
if ((pc = var.indexOf(':')) > 0) {
arg = var.substring(pc + 1);
var = var.substring(0, pc);
}
if (var.equals("&") || var.equals("MATCH")) {
head = add(head, new AmpersandRule());
} else if (var.equals("`") || var.equals("PREMATCH")) {
head = add(head, new LeftRule());
} else if (var.equals("'") || var.equals("POSTMATCH")) {
head = add(head, new RightRule());
} else if (var.equals("WANT_MORE_TEXT")) {
head = add(head, new WantMoreTextReplaceRule());
} else if (var.equals("POP")) {
head = add(head, new PopRule());
} else if (var.startsWith("+") && (tmp = defs.get(var.substring(1))) != null) {
if (tmp instanceof Regex) head = add(head, new PushRule(var.substring(1), (Regex) tmp));
else if (tmp instanceof Transformer)
head = add(head, new PushRule(var.substring(1), (Transformer) tmp));
else head = add(head, new StringRule("${" + var + "}"));
} else if (var.startsWith("=") && (tmp = defs.get(var.substring(1))) != null) {
if (tmp instanceof Regex)
head = add(head, new ChangeRule(var.substring(1), (Regex) tmp));
else if (tmp instanceof Transformer)
head = add(head, new ChangeRule(var.substring(1), (Transformer) tmp));
else head = add(head, new StringRule("${" + var + "}"));
} else if ((tmp = defs.get(var)) != null) {
if (tmp instanceof ReplaceRule) {
ReplaceRule alt = ((ReplaceRule) tmp).arg(arg);
if (alt == null) alt = ((ReplaceRule) tmp);
head = add(head, (ReplaceRule) (alt.clone()));
}
} else // can't figure out how to transform this thing...
head = add(head, new StringRule("${" + var + "}"));
} else if ((var = gv.stringMatched(7 + off)) != null) {
char c = var.charAt(0);
if (c == 'n') head = add(head, new StringRule("\n"));
else if (c == 't') head = add(head, new StringRule("\t"));
else if (c == 'r') head = add(head, new StringRule("\r"));
else if (c == 'b') head = add(head, new StringRule("\r"));
else if (c == 'a') head = add(head, new StringRule("" + (char) 7));
else if (c == 'e') head = add(head, new StringRule("" + (char) 27));
else if (c == 'f') head = add(head, new StringRule("" + (char) 12));
} else if ((var = gv.stringMatched(8 + off)) != null) {
char c = var.charAt(0);
if (c < Ctrl.cmap.length) c = Ctrl.cmap[c];
head = add(head, new StringRule("" + c));
} else if ((var = gv.stringMatched(9 + off)) != null) {
int d = 16 * getHexDigit(var.charAt(0)) + getHexDigit(var.charAt(1));
head = add(head, new StringRule("" + (char) d));
}
mt = gv.matchedTo();
}
if (mt <= s.length()) head = add(head, new StringRule(s.substring(mt)));
return head;
} finally {
// Regex.backGs = sav_backGs;
// Regex.backGto = sav_backGto;
}
}