分号的 Javascript 正则表达式不在复杂的嵌套引号中

Question

Is there a way that a regex would match all of these instances where the semicolons would not match when in quotes but would match when not in quotes-

";" (match this instance); ";"
';' (match this instance); ';'
"";";" (match this instance); "";";"
';";"' (match this instance); ';";"'

This is just an example and the semicolons can be preceded by numbers letters etc. To provide a bit more context, take for example this case -

'This is a \n ; test "statement;" ;' (match this instance); "This is also a test;'Statement;'"

The (match this instance); means that that instance of the semicolon should be matched. Also higher levels of " and ' nesting is possible, so looking for a global solution.

Also it should match if the quotes are escaped with a backslash as so -

\"(match this instance);\"
"\";\""(match this instance);\"(match this instance);\"

Answer 1

You could match the character series that do not constitute a "valid" semi-colon, and then match the semi-colon, ...etc. This way the whole text will be matched, but the semi-colons will be in separate matches:

 let regex = /(?:\\.|(["'])(?:\\.|.)*?\1|[^;])+|;/gms; let test = String.raw`";" (match this instance); ";" ';' (match this instance); ';' "";";" (match this instance); "";";" ';";"' (match this instance); ';";"' \"(match this instance);\" "\";\""(match this instance);\"(match this instance);\"` let matches = test.match(regex); console.log(matches);

Whenever a match is just one character (it will be a semi-colon) it is to be considered the actual match you'd be looking for.