script_tag_scanner.h

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/*
 * Copyright 2010 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http:///www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


#ifndef NET_INSTAWEB_REWRITER_PUBLIC_SCRIPT_TAG_SCANNER_H_
#define NET_INSTAWEB_REWRITER_PUBLIC_SCRIPT_TAG_SCANNER_H_

#include "pagespeed/kernel/base/basictypes.h"
#include "pagespeed/kernel/base/string.h"
#include "pagespeed/kernel/base/string_util.h"
#include "pagespeed/kernel/html/html_element.h"

namespace net_instaweb {
class HtmlParse;

class ScriptTagScanner {
 public:
  enum ScriptClassification {
    kNonScript,
    kUnknownScript,
    kJavaScript
  };

  enum ExecutionModeFlags {
    kExecuteSync = 0,
    kExecuteDefer = 1,
    kExecuteAsync = 2,
    kExecuteForEvent = 4  
  };

  explicit ScriptTagScanner(HtmlParse* html_parse);

  ScriptClassification ParseScriptElement(HtmlElement* element,
                                          HtmlElement::Attribute** src);

  int ExecutionMode(const HtmlElement* element) const;

 private:
  static GoogleString Normalized(const StringPiece& str);

  bool IsJsMime(const GoogleString& type_str);

  
};

}  

#endif