0d073fa89e
- Add GETTING_STARTED.md with quick start guide and development modes - Add INSTALL.sh automated installation script - Add INSTALLATION_CHECKLIST.md, INSTALLATION_SUCCESS.md, and INSTALLATION_SUMMARY.md - Add QUICK_REFERENCE.md for common commands - Add SETUP_GUIDE.md with detailed setup instructions - Update README.md with improved project overview - Add did-wallet app dependencies and node_modules
114 lines
2.8 KiB
JavaScript
114 lines
2.8 KiB
JavaScript
import { Token, Type } from './token.js'
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import * as uint from './0uint.js'
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import { decodeErrPrefix } from './common.js'
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/**
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* @typedef {import('./bl.js').Bl} Bl
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* @typedef {import('../interface').DecodeOptions} DecodeOptions
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*/
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/**
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* @param {Uint8Array} _data
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* @param {number} _pos
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* @param {number} prefix
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* @param {number} length
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* @returns {Token}
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*/
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function toToken (_data, _pos, prefix, length) {
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return new Token(Type.map, length, prefix)
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}
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/**
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* @param {Uint8Array} data
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* @param {number} pos
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* @param {number} minor
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* @param {DecodeOptions} _options
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* @returns {Token}
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*/
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export function decodeMapCompact (data, pos, minor, _options) {
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return toToken(data, pos, 1, minor)
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}
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/**
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* @param {Uint8Array} data
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* @param {number} pos
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* @param {number} _minor
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* @param {DecodeOptions} options
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* @returns {Token}
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*/
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export function decodeMap8 (data, pos, _minor, options) {
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return toToken(data, pos, 2, uint.readUint8(data, pos + 1, options))
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}
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/**
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* @param {Uint8Array} data
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* @param {number} pos
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* @param {number} _minor
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* @param {DecodeOptions} options
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* @returns {Token}
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*/
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export function decodeMap16 (data, pos, _minor, options) {
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return toToken(data, pos, 3, uint.readUint16(data, pos + 1, options))
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}
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/**
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* @param {Uint8Array} data
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* @param {number} pos
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* @param {number} _minor
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* @param {DecodeOptions} options
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* @returns {Token}
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*/
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export function decodeMap32 (data, pos, _minor, options) {
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return toToken(data, pos, 5, uint.readUint32(data, pos + 1, options))
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}
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// TODO: maybe we shouldn't support this ..
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/**
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* @param {Uint8Array} data
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* @param {number} pos
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* @param {number} _minor
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* @param {DecodeOptions} options
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* @returns {Token}
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*/
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export function decodeMap64 (data, pos, _minor, options) {
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const l = uint.readUint64(data, pos + 1, options)
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if (typeof l === 'bigint') {
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throw new Error(`${decodeErrPrefix} 64-bit integer map lengths not supported`)
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}
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return toToken(data, pos, 9, l)
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}
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/**
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* @param {Uint8Array} data
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* @param {number} pos
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* @param {number} _minor
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* @param {DecodeOptions} options
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* @returns {Token}
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*/
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export function decodeMapIndefinite (data, pos, _minor, options) {
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if (options.allowIndefinite === false) {
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throw new Error(`${decodeErrPrefix} indefinite length items not allowed`)
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}
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return toToken(data, pos, 1, Infinity)
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}
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/**
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* @param {Bl} buf
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* @param {Token} token
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*/
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export function encodeMap (buf, token) {
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uint.encodeUintValue(buf, Type.map.majorEncoded, token.value)
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}
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// using a map as a map key, are you sure about this? we can only sort
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// by map length here, it's up to the encoder to decide to look deeper
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encodeMap.compareTokens = uint.encodeUint.compareTokens
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/**
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* @param {Token} token
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* @returns {number}
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*/
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encodeMap.encodedSize = function encodedSize (token) {
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return uint.encodeUintValue.encodedSize(token.value)
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}
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