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100 lines
3.8 KiB
100 lines
3.8 KiB
2 years ago
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import { Composer } from './compose/composer.js';
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import { Document } from './doc/Document.js';
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import { prettifyError, YAMLParseError } from './errors.js';
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import { warn } from './log.js';
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import { LineCounter } from './parse/line-counter.js';
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import { Parser } from './parse/parser.js';
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function parseOptions(options) {
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const prettyErrors = options.prettyErrors !== false;
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const lineCounter = options.lineCounter || (prettyErrors && new LineCounter()) || null;
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return { lineCounter, prettyErrors };
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}
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/**
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* Parse the input as a stream of YAML documents.
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*
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* Documents should be separated from each other by `...` or `---` marker lines.
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*
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* @returns If an empty `docs` array is returned, it will be of type
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* EmptyStream and contain additional stream information. In
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* TypeScript, you should use `'empty' in docs` as a type guard for it.
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*/
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function parseAllDocuments(source, options = {}) {
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const { lineCounter, prettyErrors } = parseOptions(options);
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const parser = new Parser(lineCounter?.addNewLine);
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const composer = new Composer(options);
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const docs = Array.from(composer.compose(parser.parse(source)));
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if (prettyErrors && lineCounter)
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for (const doc of docs) {
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doc.errors.forEach(prettifyError(source, lineCounter));
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doc.warnings.forEach(prettifyError(source, lineCounter));
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}
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if (docs.length > 0)
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return docs;
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return Object.assign([], { empty: true }, composer.streamInfo());
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}
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/** Parse an input string into a single YAML.Document */
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function parseDocument(source, options = {}) {
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const { lineCounter, prettyErrors } = parseOptions(options);
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const parser = new Parser(lineCounter?.addNewLine);
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const composer = new Composer(options);
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// `doc` is always set by compose.end(true) at the very latest
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let doc = null;
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for (const _doc of composer.compose(parser.parse(source), true, source.length)) {
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if (!doc)
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doc = _doc;
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else if (doc.options.logLevel !== 'silent') {
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doc.errors.push(new YAMLParseError(_doc.range.slice(0, 2), 'MULTIPLE_DOCS', 'Source contains multiple documents; please use YAML.parseAllDocuments()'));
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break;
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}
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}
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if (prettyErrors && lineCounter) {
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doc.errors.forEach(prettifyError(source, lineCounter));
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doc.warnings.forEach(prettifyError(source, lineCounter));
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}
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return doc;
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}
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function parse(src, reviver, options) {
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let _reviver = undefined;
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if (typeof reviver === 'function') {
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_reviver = reviver;
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}
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else if (options === undefined && reviver && typeof reviver === 'object') {
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options = reviver;
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}
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const doc = parseDocument(src, options);
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if (!doc)
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return null;
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doc.warnings.forEach(warning => warn(doc.options.logLevel, warning));
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if (doc.errors.length > 0) {
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if (doc.options.logLevel !== 'silent')
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throw doc.errors[0];
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else
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doc.errors = [];
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}
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return doc.toJS(Object.assign({ reviver: _reviver }, options));
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}
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function stringify(value, replacer, options) {
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let _replacer = null;
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if (typeof replacer === 'function' || Array.isArray(replacer)) {
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_replacer = replacer;
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}
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else if (options === undefined && replacer) {
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options = replacer;
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}
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if (typeof options === 'string')
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options = options.length;
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if (typeof options === 'number') {
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const indent = Math.round(options);
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options = indent < 1 ? undefined : indent > 8 ? { indent: 8 } : { indent };
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}
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if (value === undefined) {
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const { keepUndefined } = options ?? replacer ?? {};
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if (!keepUndefined)
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return undefined;
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}
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return new Document(value, _replacer, options).toString(options);
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}
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export { parse, parseAllDocuments, parseDocument, stringify };
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