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15 lines
575 B
JavaScript
15 lines
575 B
JavaScript
"use strict";
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const { NoMatch, NotEnoughInput } = require("./symbols");
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// This is a utility function for propagating NoMatches through the stack, without resorting to `throw`/`catch` (which can be slow)
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// FIXME: Use a Result type instead?
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// FIXME: Maybe we can get rid of this entirely? Now that we no longer have to handle NotEnoughInput within core-ops anymore at all
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module.exports = function ifMatch(testResult, produceResult) {
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if (testResult === NoMatch || testResult === NotEnoughInput) {
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return testResult;
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} else {
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return produceResult(testResult);
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}
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};
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