Script.h revision 80232dd16c0affb2afae01cde6c94abf23ac1ba8 
1/*
2 * Copyright 2010-2012, The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef BCC_SCRIPT_H
18#define BCC_SCRIPT_H
19
20namespace bcc {
21
22class Source;
23
24class Script {
25private:
26  // This is the source associated with this object and is going to be
27  // compiled.
28  Source *mSource;
29
30protected:
31  // This hook will be invoked after the script object is succssfully reset
32  // itself.
33  virtual bool doReset()
34  { return true; }
35
36public:
37  Script(Source &pSource) : mSource(&pSource) { }
38
39  virtual ~Script() { }
40
41  // Reset this object with the new source supplied. Return false if this
42  // object remains unchanged after the call (e.g., the supplied source is
43  // the same with the one contain in this object.) If pPreserveCurrent is
44  // false, the current containing source will be destroyed after successfully
45  // reset.
46  bool reset(Source &pSource, bool pPreserveCurrent = false);
47
48  // Merge (or link) another source into the current source associated with
49  // this Script object. Return false on error.
50  //
51  // This is equivalent to the call to Script::merge(...) on mSource.
52  bool mergeSource(Source &pSource, bool pPreserveSource = false);
53
54  inline Source &getSource()
55  { return *mSource; }
56  inline const Source &getSource() const
57  { return *mSource; }
58};
59
60} // end namespace bcc
61
62#endif  // BCC_SCRIPT_H
63