31 lines
1.0 KiB
JavaScript
31 lines
1.0 KiB
JavaScript
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import {
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makeCborEncoders,
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objectToTokens
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} from './encode.js';
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import { quickEncodeToken } from './jump.js';
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const cborEncoders = makeCborEncoders();
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const defaultEncodeOptions = {
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float64: false,
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quickEncodeToken
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};
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export function encodedLength(data, options) {
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options = Object.assign({}, defaultEncodeOptions, options);
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options.mapSorter = undefined;
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const tokens = objectToTokens(data, options);
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return tokensToLength(tokens, cborEncoders, options);
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}
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export function tokensToLength(tokens, encoders = cborEncoders, options = defaultEncodeOptions) {
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if (Array.isArray(tokens)) {
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let len = 0;
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for (const token of tokens) {
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len += tokensToLength(token, encoders, options);
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}
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return len;
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} else {
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const encoder = encoders[tokens.type.major];
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if (encoder.encodedSize === undefined || typeof encoder.encodedSize !== 'function') {
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throw new Error(`Encoder for ${ tokens.type.name } does not have an encodedSize()`);
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}
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return encoder.encodedSize(tokens, options);
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}
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}
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