text: 'use strict';
  
  /* jshint -W110 */
  const dataTypes = require('./data-types');
  const _ = require('lodash');
  
  function escapeId(val, forbidQualified) {
    if (forbidQualified) {
      return '`' + val.replace(/`/g, '``') + '`';
    }
    return '`' + val.replace(/`/g, '``').replace(/\./g, '`.`') + '`';
  }
  exports.escapeId = escapeId;
  
  function escape(val, timeZone, dialect, format) {
    let prependN = false;
    if (val === undefined || val === null) {
      return 'NULL';
    }
    switch (typeof val) {
    case 'boolean':
      // SQLite doesn't have true/false support. MySQL aliases true/false to 1/0
      // for us. Postgres actually has a boolean type with true/false literals,
      // but sequelize doesn't use it yet.
      if (dialect === 'sqlite' || dialect === 'mssql') {
        return +!!val;
      }
      return '' + !!val;
    case 'number':
      return val + '';
    case 'string':
      // In mssql, prepend N to all quoted vals which are originally a string (for
      // unicode compatibility)
      prependN = dialect === 'mssql';
      break;
    }
  
    if (val instanceof Date) {
      val = dataTypes[dialect].DATE.prototype.stringify(val, { timezone: timeZone });
    }
  
    if (Buffer.isBuffer(val)) {
      if (dataTypes[dialect].BLOB) {
        return dataTypes[dialect].BLOB.prototype.stringify(val);
      }
  
      return dataTypes.BLOB.prototype.stringify(val);
    }
  
    if (Array.isArray(val)) {
      const partialEscape = _.partial(escape, _, timeZone, dialect, format);
      if (dialect === 'postgres' && !format) {
        return dataTypes.ARRAY.prototype.stringify(val, {escape});
      }
      return val.map(partialEscape);
    }
  
    if (!val.replace) {
      throw new Error('Invalid value ' + val);
    }
  
    if (dialect === 'postgres' || dialect === 'sqlite' || dialect === 'mssql') {
      // http://www.postgresql.org/docs/8.2/static/sql-syntax-lexical.html#SQL-SYNTAX-STRINGS
      // http://stackoverflow.com/q/603572/130598
      val = val.replace(/'/g, "''");
    } else {
      val = val.replace(/[\0\n\r\b\t\\\'\"\x1a]/g, s => {
        switch (s) {
          case '\0': return '\\0';
          case '\n': return '\\n';
          case '\r': return '\\r';
          case '\b': return '\\b';
          case '\t': return '\\t';
          case '\x1a': return '\\Z';
          default: return '\\' + s;
        }
      });
    }
    return (prependN ? "N'" : "'") + val + "'";
  }
  exports.escape = escape;
  
  function format(sql, values, timeZone, dialect) {
    values = [].concat(values);
  
    return sql.replace(/\?/g, match => {
      if (!values.length) {
        return match;
      }
  
      return escape(values.shift(), timeZone, dialect, true);
    });
  }
  exports.format = format;
  
  function formatNamedParameters(sql, values, timeZone, dialect) {
    return sql.replace(/\:+(?!\d)(\w+)/g, (value, key) => {
      if ('postgres' === dialect && '::' === value.slice(0, 2)) {
        return value;
      }
  
      if (values[key] !== undefined) {
        return escape(values[key], timeZone, dialect, true);
      } else {
        throw new Error('Named parameter "' + value + '" has no value in the given object.');
      }
    });
  }
  exports.formatNamedParameters = formatNamedParameters;
  