text: "use strict";
  
  exports.testEvents = testEvents;
  
  var _parse = require("./cst/parse");
  
  var _Document = require("./Document");
  
  // test harness for yaml-test-suite event tests
  function testEvents(src, options) {
    const opt = Object.assign({
      keepCstNodes: true,
      keepNodeTypes: true,
      version: '1.2'
    }, options);
    const docs = (0, _parse.parse)(src).map(cstDoc => new _Document.Document(opt).parse(cstDoc));
    const errDoc = docs.find(doc => doc.errors.length > 0);
    const error = errDoc ? errDoc.errors[0].message : null;
    const events = ['+STR'];
  
    try {
      for (let i = 0; i < docs.length; ++i) {
        const doc = docs[i];
        let root = doc.contents;
        if (Array.isArray(root)) root = root[0];
        const [rootStart, rootEnd] = doc.range || [0, 0];
        let e = doc.errors[0] && doc.errors[0].source;
        if (e && e.type === 'SEQ_ITEM') e = e.node;
        if (e && (e.type === 'DOCUMENT' || e.range.start < rootStart)) throw new Error();
        let docStart = '+DOC';
        const pre = src.slice(0, rootStart);
        const explicitDoc = /---\s*$/.test(pre);
        if (explicitDoc) docStart += ' ---';else if (!doc.contents) continue;
        events.push(docStart);
        addEvents(events, doc, e, root);
        if (doc.contents && doc.contents.length > 1) throw new Error();
        let docEnd = '-DOC';
  
        if (rootEnd) {
          const post = src.slice(rootEnd);
          if (/^\.\.\./.test(post)) docEnd += ' ...';
        }
  
        events.push(docEnd);
      }
    } catch (e) {
      return {
        events,
        error: error || e
      };
    }
  
    events.push('-STR');
    return {
      events,
      error
    };
  }
  
  function addEvents(events, doc, e, node) {
    if (!node) {
      events.push('=VAL :');
      return;
    }
  
    if (e && node.cstNode === e) throw new Error();
    let props = '';
    let anchor = doc.anchors.getName(node);
  
    if (anchor) {
      if (/\d$/.test(anchor)) {
        const alt = anchor.replace(/\d$/, '');
        if (doc.anchors.getNode(alt)) anchor = alt;
      }
  
      props = ` &${anchor}`;
    }
  
    if (node.cstNode && node.cstNode.tag) {
      const {
        handle,
        suffix
      } = node.cstNode.tag;
      props += handle === '!' && !suffix ? ' <!>' : ` <${node.tag}>`;
    }
  
    let scalar = null;
  
    switch (node.type) {
      case 'ALIAS':
        {
          let alias = doc.anchors.getName(node.source);
  
          if (/\d$/.test(alias)) {
            const alt = alias.replace(/\d$/, '');
            if (doc.anchors.getNode(alt)) alias = alt;
          }
  
          events.push(`=ALI${props} *${alias}`);
        }
        break;
  
      case 'BLOCK_FOLDED':
        scalar = '>';
        break;
  
      case 'BLOCK_LITERAL':
        scalar = '|';
        break;
  
      case 'PLAIN':
        scalar = ':';
        break;
  
      case 'QUOTE_DOUBLE':
        scalar = '"';
        break;
  
      case 'QUOTE_SINGLE':
        scalar = "'";
        break;
  
      case 'PAIR':
        events.push(`+MAP${props}`);
        addEvents(events, doc, e, node.key);
        addEvents(events, doc, e, node.value);
        events.push('-MAP');
        break;
  
      case 'FLOW_SEQ':
      case 'SEQ':
        events.push(`+SEQ${props}`);
        node.items.forEach(item => {
          addEvents(events, doc, e, item);
        });
        events.push('-SEQ');
        break;
  
      case 'FLOW_MAP':
      case 'MAP':
        events.push(`+MAP${props}`);
        node.items.forEach(({
          key,
          value
        }) => {
          addEvents(events, doc, e, key);
          addEvents(events, doc, e, value);
        });
        events.push('-MAP');
        break;
  
      default:
        throw new Error(`Unexpected node type ${node.type}`);
    }
  
    if (scalar) {
      const value = node.cstNode.strValue.replace(/\\/g, '\\\\').replace(/\0/g, '\\0').replace(/\x07/g, '\\a').replace(/\x08/g, '\\b').replace(/\t/g, '\\t').replace(/\n/g, '\\n').replace(/\v/g, '\\v').replace(/\f/g, '\\f').replace(/\r/g, '\\r').replace(/\x1b/g, '\\e');
      events.push(`=VAL${props} ${scalar}${value}`);
    }
  }