js_replacer.h

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/*
 * Copyright 2014 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_JS_REPLACER_H_
#define NET_INSTAWEB_REWRITER_PUBLIC_JS_REPLACER_H_

#include <vector>

#include "pagespeed/kernel/base/basictypes.h"
#include "pagespeed/kernel/base/callback.h"
#include "pagespeed/kernel/base/string.h"
#include "pagespeed/kernel/base/string_util.h"
#include "pagespeed/kernel/js/js_tokenizer.h"

namespace net_instaweb {

class JsReplacer {
 public:
  typedef Callback1<GoogleString*> StringRewriter;

  explicit JsReplacer(const pagespeed::js::JsTokenizerPatterns* patterns)
      : js_tokenizer_patterns_(patterns) {}

  ~JsReplacer();

  void AddPattern(const GoogleString& object,
                  const GoogleString& field,
                  StringRewriter* rewriter);

  bool Transform(StringPiece in, GoogleString* out);

 private:
  struct Pattern {
    Pattern() : rewriter(NULL) {}
    Pattern(const GoogleString& object, const GoogleString& field,
            StringRewriter* rewriter)
        : object(object), field(field), rewriter(rewriter) {}

    GoogleString object;
    GoogleString field;
    StringRewriter* rewriter;
  };

  bool HandleCandidate(const GoogleString& object, const GoogleString& field,
                       StringPiece value, GoogleString* out);

  std::vector<Pattern> patterns_;
  const pagespeed::js::JsTokenizerPatterns* js_tokenizer_patterns_;

  
};

}  

#endif