source: imaps-frontend/node_modules/jsx-ast-utils/lib/values/expressions/BinaryExpression.js

main
Last change on this file was d565449, checked in by stefan toskovski <stefantoska84@…>, 4 weeks ago

Update repo after prototype presentation

  • Property mode set to 100644
File size: 2.1 KB
Line 
1'use strict';
2
3Object.defineProperty(exports, "__esModule", {
4 value: true
5});
6exports.default = extractValueFromBinaryExpression;
7/**
8 * Extractor function for a BinaryExpression type value node.
9 * A binary expression has a left and right side separated by an operator
10 * such as `a + b`.
11 *
12 * @param - value - AST Value object with type `BinaryExpression`
13 * @returns - The extracted value converted to correct type.
14 */
15function extractValueFromBinaryExpression(value) {
16 // eslint-disable-next-line global-require
17 var getValue = require('.').default;
18 var operator = value.operator,
19 left = value.left,
20 right = value.right;
21
22 var leftVal = getValue(left);
23 var rightVal = getValue(right);
24
25 switch (operator) {
26 case '==':
27 return leftVal == rightVal; // eslint-disable-line
28 case '!=':
29 return leftVal != rightVal; // eslint-disable-line
30 case '===':
31 return leftVal === rightVal;
32 case '!==':
33 return leftVal !== rightVal;
34 case '<':
35 return leftVal < rightVal;
36 case '<=':
37 return leftVal <= rightVal;
38 case '>':
39 return leftVal > rightVal;
40 case '>=':
41 return leftVal >= rightVal;
42 case '<<':
43 return leftVal << rightVal; // eslint-disable-line no-bitwise
44 case '>>':
45 return leftVal >> rightVal; // eslint-disable-line no-bitwise
46 case '>>>':
47 return leftVal >>> rightVal; // eslint-disable-line no-bitwise
48 case '+':
49 return leftVal + rightVal;
50 case '-':
51 return leftVal - rightVal;
52 case '*':
53 return leftVal * rightVal;
54 case '/':
55 return leftVal / rightVal;
56 case '%':
57 return leftVal % rightVal;
58 case '|':
59 return leftVal | rightVal; // eslint-disable-line no-bitwise
60 case '^':
61 return leftVal ^ rightVal; // eslint-disable-line no-bitwise
62 case '&':
63 return leftVal & rightVal; // eslint-disable-line no-bitwise
64 case 'in':
65 try {
66 return leftVal in rightVal;
67 } catch (err) {
68 return false;
69 }
70 case 'instanceof':
71 if (typeof rightVal !== 'function') {
72 return false;
73 }
74 return leftVal instanceof rightVal;
75 default:
76 return undefined;
77 }
78}
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