mirror of
https://github.com/10h30/odin-javascript-exercises.git
synced 2026-07-16 05:03:20 +09:00
remove timer and simon
This commit is contained in:
+57
@@ -0,0 +1,57 @@
|
||||
/**
|
||||
* @fileoverview Rule to flag the use of empty character classes in regular expressions
|
||||
* @author Ian Christian Myers
|
||||
*/
|
||||
|
||||
"use strict";
|
||||
|
||||
//------------------------------------------------------------------------------
|
||||
// Helpers
|
||||
//------------------------------------------------------------------------------
|
||||
|
||||
/*
|
||||
* plain-English description of the following regexp:
|
||||
* 0. `^` fix the match at the beginning of the string
|
||||
* 1. `\/`: the `/` that begins the regexp
|
||||
* 2. `([^\\[]|\\.|\[([^\\\]]|\\.)+\])*`: regexp contents; 0 or more of the following
|
||||
* 2.0. `[^\\[]`: any character that's not a `\` or a `[` (anything but escape sequences and character classes)
|
||||
* 2.1. `\\.`: an escape sequence
|
||||
* 2.2. `\[([^\\\]]|\\.)+\]`: a character class that isn't empty
|
||||
* 3. `\/` the `/` that ends the regexp
|
||||
* 4. `[gimuy]*`: optional regexp flags
|
||||
* 5. `$`: fix the match at the end of the string
|
||||
*/
|
||||
const regex = /^\/([^\\[]|\\.|\[([^\\\]]|\\.)+])*\/[gimuy]*$/;
|
||||
|
||||
//------------------------------------------------------------------------------
|
||||
// Rule Definition
|
||||
//------------------------------------------------------------------------------
|
||||
|
||||
module.exports = {
|
||||
meta: {
|
||||
docs: {
|
||||
description: "disallow empty character classes in regular expressions",
|
||||
category: "Possible Errors",
|
||||
recommended: true
|
||||
},
|
||||
|
||||
schema: []
|
||||
},
|
||||
|
||||
create(context) {
|
||||
const sourceCode = context.getSourceCode();
|
||||
|
||||
return {
|
||||
|
||||
Literal(node) {
|
||||
const token = sourceCode.getFirstToken(node);
|
||||
|
||||
if (token.type === "RegularExpression" && !regex.test(token.value)) {
|
||||
context.report({ node, message: "Empty class." });
|
||||
}
|
||||
}
|
||||
|
||||
};
|
||||
|
||||
}
|
||||
};
|
||||
Reference in New Issue
Block a user