main
Last change
on this file was d565449, checked in by stefan toskovski <stefantoska84@…>, 4 weeks ago |
Update repo after prototype presentation
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100644
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File size:
1023 bytes
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[d565449] | 1 | 'use strict';
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| 2 |
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| 3 | Object.defineProperty(exports, "__esModule", {
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| 4 | value: true
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| 5 | });
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| 6 | exports.default = extractValueFromLogicalExpression;
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| 7 | /**
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| 8 | * Extractor function for a LogicalExpression type value node.
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| 9 | * A logical expression is `a && b` or `a || b`, so we evaluate both sides
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| 10 | * and return the extracted value of the expression.
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| 11 | *
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| 12 | * @param - value - AST Value object with type `LogicalExpression`
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| 13 | * @returns - The extracted value converted to correct type.
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| 14 | */
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| 15 | function extractValueFromLogicalExpression(value) {
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| 16 | // eslint-disable-next-line global-require
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| 17 | var getValue = require('.').default;
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| 18 | var operator = value.operator,
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| 19 | left = value.left,
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| 20 | right = value.right;
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| 21 |
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| 22 | var leftVal = getValue(left);
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| 23 | var rightVal = getValue(right);
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| 24 |
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| 25 | if (operator === '&&') {
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| 26 | return leftVal && rightVal;
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| 27 | }
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| 28 | if (operator === '??') {
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| 29 | // return leftVal ?? rightVal; // TODO: update to babel 7
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| 30 | return leftVal === null || typeof leftVal === 'undefined' ? rightVal : leftVal;
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| 31 | }
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| 32 | return leftVal || rightVal;
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| 33 | } |
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