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workaround RegExp formatting bugs (#3720)

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This commit is contained in:
Alex Lam S.L
2020-02-15 05:26:48 +00:00
committed by GitHub
parent f01f580d6c
commit 0d820e4c0a
2 changed files with 80 additions and 4 deletions
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15
lib/output.js
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@@ -1354,11 +1354,18 @@ function OutputStream(options) {
DEFPRINT(AST_RegExp, function(self, output) {
var regexp = self.value;
var str = regexp.toString();
var end = str.lastIndexOf("/");
if (regexp.raw_source) {
str = "/" + regexp.raw_source + str.slice(str.lastIndexOf("/"));
str = "/" + regexp.raw_source + str.slice(end);
} else if (end == 1) {
str = "/(?:)" + str.slice(end);
} else if (str.indexOf("/", 1) < end) {
str = "/" + str.slice(1, end).replace(/\\\\|[^/]?\//g, function(match) {
return match[0] == "\\" ? match : match.slice(0, -1) + "\\/";
}) + str.slice(end);
}
output.print(output.to_utf8(str).replace(/\\(?:\0(?![0-9])|[^\0])/g, function(seq) {
switch (seq[1]) {
output.print(output.to_utf8(str).replace(/\\(?:\0(?![0-9])|[^\0])/g, function(match) {
switch (match[1]) {
case "\n": return "\\n";
case "\r": return "\\r";
case "\t": return "\t";
@@ -1368,7 +1375,7 @@ function OutputStream(options) {
case "\x0B": return "\v";
case "\u2028": return "\\u2028";
case "\u2029": return "\\u2029";
default: return seq;
default: return match;
}
}).replace(/[\n\r\u2028\u2029]/g, function(c) {
switch (c) {