blob: a4f3eef3cc0768837cddc90a190170cfe0f36d85 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
/**
* @fileoverview require default case in switch statements
* @author Aliaksei Shytkin
*/
"use strict";
var DEFAULT_COMMENT_PATTERN = /^no default$/;
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = {
meta: {
docs: {
description: "require `default` cases in <code>switch</code> statements",
category: "Best Practices",
recommended: false
},
schema: [{
type: "object",
properties: {
commentPattern: {
type: "string"
}
},
additionalProperties: false
}]
},
create: function(context) {
var options = context.options[0] || {};
var commentPattern = options.commentPattern ?
new RegExp(options.commentPattern) :
DEFAULT_COMMENT_PATTERN;
//--------------------------------------------------------------------------
// Helpers
//--------------------------------------------------------------------------
/**
* Shortcut to get last element of array
* @param {*[]} collection Array
* @returns {*} Last element
*/
function last(collection) {
return collection[collection.length - 1];
}
//--------------------------------------------------------------------------
// Public
//--------------------------------------------------------------------------
return {
SwitchStatement: function(node) {
if (!node.cases.length) {
/*
* skip check of empty switch because there is no easy way
* to extract comments inside it now
*/
return;
}
var hasDefault = node.cases.some(function(v) {
return v.test === null;
});
if (!hasDefault) {
var comment;
var comments;
var lastCase = last(node.cases);
comments = context.getComments(lastCase).trailing;
if (comments.length) {
comment = last(comments);
}
if (!comment || !commentPattern.test(comment.value.trim())) {
context.report(node, "Expected a default case.");
}
}
}
};
}
};
|
