blob: 7c2ffaf933bd82473d5fb182c5e901c6621fbcf8 (
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
|
/**
* @fileoverview Require providing a second parameter to get*Pref
* methods instead of using a try/catch block.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
"use strict";
// -----------------------------------------------------------------------------
// Rule Definition
// -----------------------------------------------------------------------------
module.exports = function(context) {
// ---------------------------------------------------------------------------
// Public
// --------------------------------------------------------------------------
return {
TryStatement(node) {
let types = ["Bool", "Char", "Float", "Int"];
let methods = types.map(type => "get" + type + "Pref");
if (node.block.type != "BlockStatement" || node.block.body.length != 1) {
return;
}
let firstStm = node.block.body[0];
if (
firstStm.type != "ExpressionStatement" ||
firstStm.expression.type != "AssignmentExpression" ||
firstStm.expression.right.type != "CallExpression" ||
firstStm.expression.right.callee.type != "MemberExpression" ||
firstStm.expression.right.callee.property.type != "Identifier" ||
!methods.includes(firstStm.expression.right.callee.property.name)
) {
return;
}
let msg = "provide a default value instead of using a try/catch block";
context.report(node, msg);
},
};
};
|
