Acme.BookStore.HttpApi.Host/node_modules/braces/lib/parsers.js

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'use strict';

var Node = require('snapdragon-node');
var utils = require('./utils');

/**
 * Braces parsers
 */

module.exports = function(braces, options) {
  braces.parser
    .set('bos', function() {
      if (!this.parsed) {
        this.ast = this.nodes[0] = new Node(this.ast);
      }
    })

    /**
     * Character parsers
     */

    .set('escape', function() {
      var pos = this.position();
      var m = this.match(/^(?:\\(.)|\$\{)/);
      if (!m) return;

      var prev = this.prev();
      var last = utils.last(prev.nodes);

      var node = pos(new Node({
        type: 'text',
        multiplier: 1,
        val: m[0]
      }));

      if (node.val === '\\\\') {
        return node;
      }

      if (node.val === '${') {
        var str = this.input;
        var idx = -1;
        var ch;

        while ((ch = str[++idx])) {
          this.consume(1);
          node.val += ch;
          if (ch === '\\') {
            node.val += str[++idx];
            continue;
          }
          if (ch === '}') {
            break;
          }
        }
      }

      if (this.options.unescape !== false) {
        node.val = node.val.replace(/\\([{}])/g, '$1');
      }