49 lines
1.1 KiB
JavaScript
49 lines
1.1 KiB
JavaScript
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const { ArgumentType } = require('brigadier-commands')
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const EXAMPLES = [123, -0.2, 'Hello, world!', true, false, { text: 'Hello, world!' }].map(v => JSON.stringify(v))
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class JSONArgumentType extends ArgumentType {
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static json () {
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return new JSONArgumentType()
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}
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parse (reader) {
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let string = ''
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let depth = 0
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let stringOpened = false
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while (reader.canRead() && (depth !== 0 || reader.peek() !== ' ')) {
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const c = reader.peek()
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if (c === '\\') {
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// Skip over escapes
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let len = 2
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if (reader.string[reader.cursor + 1] === 'u') len += 4
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len = Math.max(len, reader.string.length - reader.cursor)
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string += reader.string.substring(reader.cursor, reader.cursor + len)
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reader.cursor += len
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continue
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}
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if (c === '[' || c === '{') depth++
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else if (c === ']' || c === '}') depth--
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else if (c === '"') {
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depth += stringOpened ? -1 : 1
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stringOpened = !stringOpened
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}
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string += c
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reader.skip()
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}
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return JSON.parse(string)
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}
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getExamples () {
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return EXAMPLES
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}
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}
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module.exports = JSONArgumentType
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