radix.js
2.21 KB
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
/**
* @fileoverview Rule to flag use of parseInt without a radix argument
* @author James Allardice
*/
"use strict";
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = function(context) {
var MODE_ALWAYS = "always",
MODE_AS_NEEDED = "as-needed";
var mode = context.options[0] || MODE_ALWAYS;
return {
"CallExpression": function(node) {
var radix;
if (!(node.callee.name === "parseInt" || (
node.callee.type === "MemberExpression" &&
node.callee.object.name === "Number" &&
node.callee.property.name === "parseInt"
)
)) {
return;
}
if (node.arguments.length === 0) {
context.report({
node: node,
message: "Missing parameters."
});
} else if (node.arguments.length < 2 && mode === MODE_ALWAYS) {
context.report({
node: node,
message: "Missing radix parameter."
});
} else if (node.arguments.length > 1 && mode === MODE_AS_NEEDED &&
(node.arguments[1] && node.arguments[1].type === "Literal" &&
node.arguments[1].value === 10)
) {
context.report({
node: node,
message: "Redundant radix parameter."
});
} else {
radix = node.arguments[1];
// don't allow non-numeric literals or undefined
if (radix &&
((radix.type === "Literal" && typeof radix.value !== "number") ||
(radix.type === "Identifier" && radix.name === "undefined"))
) {
context.report({
node: node,
message: "Invalid radix parameter."
});
}
}
}
};
};
module.exports.schema = [
{
"enum": ["always", "as-needed"]
}
];