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authorwolfbeast <mcwerewolf@gmail.com>2018-03-27 13:22:30 +0200
committerwolfbeast <mcwerewolf@gmail.com>2018-03-27 13:22:30 +0200
commit8d5ec757ece850fb7ad5c712868f305636e41177 (patch)
tree92acdb7783ab29bdfa2837ad54afa491c2c42867 /js/src/tests/ecma_6/RegExp/replace-local-tolength-recompilation.js
parente19749682050ff716fc9ff3bbc05ee3911570670 (diff)
parent5fd5b2ac2f396eb1d8707a691aa26ad159ad25e3 (diff)
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Merge remote-tracking branch 'janek/js_regexp_lastindex_1'
Diffstat (limited to 'js/src/tests/ecma_6/RegExp/replace-local-tolength-recompilation.js')
-rw-r--r--js/src/tests/ecma_6/RegExp/replace-local-tolength-recompilation.js75
1 files changed, 75 insertions, 0 deletions
diff --git a/js/src/tests/ecma_6/RegExp/replace-local-tolength-recompilation.js b/js/src/tests/ecma_6/RegExp/replace-local-tolength-recompilation.js
new file mode 100644
index 000000000..e03177286
--- /dev/null
+++ b/js/src/tests/ecma_6/RegExp/replace-local-tolength-recompilation.js
@@ -0,0 +1,75 @@
+// Side-effects when calling ToLength(regExp.lastIndex) in
+// RegExp.prototype[@@replace] for non-global RegExp can recompile the RegExp.
+
+for (var flag of ["", "y"]) {
+ var regExp = new RegExp("a", flag);
+
+ regExp.lastIndex = {
+ valueOf() {
+ regExp.compile("b");
+ return 0;
+ }
+ };
+
+ var result = regExp[Symbol.replace]("b", "pass");
+ assertEq(result, "pass");
+}
+
+// Recompilation modifies flag:
+// Case 1: Adds global flag, validate by checking lastIndex.
+var regExp = new RegExp("a", "");
+regExp.lastIndex = {
+ valueOf() {
+ // |regExp| is now in global mode, RegExpBuiltinExec should update the
+ // lastIndex property to reflect last match.
+ regExp.compile("a", "g");
+ return 0;
+ }
+};
+regExp[Symbol.replace]("a", "");
+assertEq(regExp.lastIndex, 1);
+
+// Case 2: Removes sticky flag with match, validate by checking lastIndex.
+var regExp = new RegExp("a", "y");
+regExp.lastIndex = {
+ valueOf() {
+ // |regExp| is no longer sticky, RegExpBuiltinExec shouldn't modify the
+ // lastIndex property.
+ regExp.compile("a", "");
+ regExp.lastIndex = 9000;
+ return 0;
+ }
+};
+regExp[Symbol.replace]("a", "");
+assertEq(regExp.lastIndex, 9000);
+
+// Case 3.a: Removes sticky flag without match, validate by checking lastIndex.
+var regExp = new RegExp("a", "y");
+regExp.lastIndex = {
+ valueOf() {
+ // |regExp| is no longer sticky, RegExpBuiltinExec shouldn't modify the
+ // lastIndex property.
+ regExp.compile("b", "");
+ regExp.lastIndex = 9001;
+ return 0;
+ }
+};
+regExp[Symbol.replace]("a", "");
+assertEq(regExp.lastIndex, 9001);
+
+// Case 3.b: Removes sticky flag without match, validate by checking lastIndex.
+var regExp = new RegExp("a", "y");
+regExp.lastIndex = {
+ valueOf() {
+ // |regExp| is no longer sticky, RegExpBuiltinExec shouldn't modify the
+ // lastIndex property.
+ regExp.compile("b", "");
+ regExp.lastIndex = 9002;
+ return 10000;
+ }
+};
+regExp[Symbol.replace]("a", "");
+assertEq(regExp.lastIndex, 9002);
+
+if (typeof reportCompare === "function")
+ reportCompare(true, true);