Adequate template engine - Minimalist but entirely more than adequate Js templating engine

adequate-template-engine.js

 /*****************************************
  * Usage: 
  *   engine = Adqt.TemplateEngine
  *   template = 'My name is <% this.name %>'
  *   hash = { name: 'Yemi' }
  *
  *   compiled = engine.compile(template)     // => "var r=[]; r.push("My name is "); r.push( this.name ); return r.join("");"
  *   engine.render(compiled, hash)           // => My name is Yemi
  *
  * engine.render(compiled, { name: 'Mike' }) // => My name is Mike
  *****************************************/



window.Adqt = window.Adqt || {};
Adqt.TemplateEngine = (function() {
  var compileTemplate = function(html) {
        var re = /<%([^%>]+)?%>/g,
            reExp = /(^( )?(if|for|else|switch|case|break|{|}))(.*)?/g,
            code = 'var r=[];\n',
            cursor = 0,
            match;
        var add = function(line, js) {
              js? (code += line.match(reExp) ?
                  line + '\n' : 'r.push(' + line + ');\n') :
                  (code += line !== '' ? 'r.push("' + line.replace(/"/g, '\\"') + '");\n' : '');
              return add;
            }

        while(match = re.exec(html)) {
          add(html.slice(cursor, match.index))(match[1], true);
          cursor = match.index + match[0].length;
        }
        add(html.substr(cursor, html.length - cursor));

        return code += 'return r.join("");';
      },

      renderTemplate = function(tmpl, obj) {
        return new Function(tmpl.replace(/[\r\t\n]/g, '')).apply(obj);
      };

  return {
    compile: function(html) {
      console.log('Boogie - begin template compile to cache away')
      return compileTemplate(html)
    },

    render: function(tmpl, obj) {
      console.warn('Cooking-on-gas!')
      return renderTemplate(tmpl, obj)
    }
  }
})()