78 lines
2.1 KiB
JavaScript
Executable File
78 lines
2.1 KiB
JavaScript
Executable File
'use strict';
|
|
|
|
Object.defineProperty(exports, "__esModule", {
|
|
value: true
|
|
});
|
|
exports.default = extractValueFromBinaryExpression;
|
|
/**
|
|
* Extractor function for a BinaryExpression type value node.
|
|
* A binary expression has a left and right side separated by an operator
|
|
* such as `a + b`.
|
|
*
|
|
* @param - value - AST Value object with type `BinaryExpression`
|
|
* @returns - The extracted value converted to correct type.
|
|
*/
|
|
function extractValueFromBinaryExpression(value) {
|
|
// eslint-disable-next-line global-require
|
|
var getValue = require('.').default;
|
|
var operator = value.operator,
|
|
left = value.left,
|
|
right = value.right;
|
|
|
|
var leftVal = getValue(left);
|
|
var rightVal = getValue(right);
|
|
|
|
switch (operator) {
|
|
case '==':
|
|
return leftVal == rightVal; // eslint-disable-line
|
|
case '!=':
|
|
return leftVal != rightVal; // eslint-disable-line
|
|
case '===':
|
|
return leftVal === rightVal;
|
|
case '!==':
|
|
return leftVal !== rightVal;
|
|
case '<':
|
|
return leftVal < rightVal;
|
|
case '<=':
|
|
return leftVal <= rightVal;
|
|
case '>':
|
|
return leftVal > rightVal;
|
|
case '>=':
|
|
return leftVal >= rightVal;
|
|
case '<<':
|
|
return leftVal << rightVal; // eslint-disable-line no-bitwise
|
|
case '>>':
|
|
return leftVal >> rightVal; // eslint-disable-line no-bitwise
|
|
case '>>>':
|
|
return leftVal >>> rightVal; // eslint-disable-line no-bitwise
|
|
case '+':
|
|
return leftVal + rightVal;
|
|
case '-':
|
|
return leftVal - rightVal;
|
|
case '*':
|
|
return leftVal * rightVal;
|
|
case '/':
|
|
return leftVal / rightVal;
|
|
case '%':
|
|
return leftVal % rightVal;
|
|
case '|':
|
|
return leftVal | rightVal; // eslint-disable-line no-bitwise
|
|
case '^':
|
|
return leftVal ^ rightVal; // eslint-disable-line no-bitwise
|
|
case '&':
|
|
return leftVal & rightVal; // eslint-disable-line no-bitwise
|
|
case 'in':
|
|
try {
|
|
return leftVal in rightVal;
|
|
} catch (err) {
|
|
return false;
|
|
}
|
|
case 'instanceof':
|
|
if (typeof rightVal !== 'function') {
|
|
return false;
|
|
}
|
|
return leftVal instanceof rightVal;
|
|
default:
|
|
return undefined;
|
|
}
|
|
} |