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"use strict";
function testNoCaptureGroups() {
var s = "a..bb.cba.";
for (var i = 0; i < 20; i++) {
var log = "";
var res = s.replace(/a|b/g, function(...args) {
assertEq(this, undefined);
assertEq(args.length, 3);
assertEq(args[2], s);
log += "(" + args[0] + args[1] + ")";
return "X";
});
assertEq(res, "X..XX.cXX.");
assertEq(log, "(a0)(b3)(b4)(b7)(a8)");
}
}
testNoCaptureGroups();
function testCaptureGroups() {
var s = "a..bb.cba.";
for (var i = 0; i < 20; i++) {
var log = "";
var res = s.replace(/(a)|(b)/g, function(...args) {
assertEq(this, undefined);
assertEq(args.length, 5);
assertEq(args[4], s);
log += "(" + args[0] + args[1] + args[2] + args[3] + ")";
return "X";
});
assertEq(res, "X..XX.cXX.");
assertEq(log, "(aaundefined0)(bundefinedb3)(bundefinedb4)(bundefinedb7)(aaundefined8)");
}
}
testCaptureGroups();
// Calling RegExp#compile in the callback has no effect, because |replace| will
// create a new RegExp object from the original source/flags if this happens.
function testCaptureGroupsChanging() {
var s = "a..bb.cba.";
for (var i = 0; i < 20; i++) {
var log = "";
var re = /a|b/g;
var res = s.replace(re, function(...args) {
assertEq(this, undefined);
assertEq(args.length, 3);
assertEq(args[2], s);
log += "(" + args[0] + args[1] + ")";
re.compile("(a)|(b)", "g");
return "X";
});
assertEq(res, "X..XX.cXX.");
assertEq(log, "(a0)(b3)(b4)(b7)(a8)");
}
}
testCaptureGroupsChanging();
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