Gnash  0.8.11dev
as_environment.h
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18 
19 #ifndef GNASH_AS_ENVIRONMENT_H
20 #define GNASH_AS_ENVIRONMENT_H
21 
22 #include <string>
23 #include <vector>
24 #include <algorithm>
25 
26 #include "dsodefs.h" // for DSOTEXPORT
27 #include "as_value.h"
28 #include "SafeStack.h"
29 
30 // Forward declarations
31 namespace gnash {
32  class DisplayObject;
33  class VM;
34  class Global_as;
35  class movie_root;
36  class string_table;
37 }
38 
39 namespace gnash {
40 
41 
43 //
47 //
51 {
52 public:
53 
55  typedef std::vector<as_object*> ScopeStack;
56 
58 
59  VM& getVM() const { return _vm; }
60 
61  DisplayObject* target() const { return _target; }
62 
64  //
69  if (!_original_target) _original_target = target;
70  _target = target;
71  }
72 
74  _original_target = target;
75  }
76 
77  DisplayObject* get_original_target() const { return _original_target; }
78 
79  // Reset target to its original value
80  void reset_target() { _target = _original_target; }
81 
83  void push(const as_value& val) {
84  _stack.push(val);
85  }
86 
89  try {
90  return _stack.pop();
91  }
92  catch (const StackException&) {
93  return as_value();
94  }
95 
97  //
102  as_value& top(size_t dist) const
103  try {
104  return _stack.top(dist);
105  }
106  catch (const StackException&) {
107  return undefVal;
108  }
109 
111  void drop(size_t count) {
112  // in case count > stack size, just drop all, forget about
113  // exceptions...
114  _stack.drop(std::min(count, _stack.size()));
115  }
116 
117  size_t stack_size() const { return _stack.size(); }
118 
120  //
122  void markReachableResources() const;
123 
125  //
127  int get_version() const;
128 
129 private:
130 
131  VM& _vm;
132 
134  SafeStack<as_value>& _stack;
135 
137  DisplayObject* _target;
138 
140  DisplayObject* _original_target;
141 
142  static as_value undefVal;
143 
144 };
145 
147 //
153 as_value getVariable(const as_environment& ctx, const std::string& varname,
154  const as_environment::ScopeStack& scope, as_object** retTarget = 0);
155 
157 //
162 //
167 void setVariable(const as_environment& ctx, const std::string& path,
168  const as_value& val, const as_environment::ScopeStack& scope);
169 
171 //
175 bool delVariable(const as_environment& ctx, const std::string& varname,
176  const as_environment::ScopeStack& scope);
177 
196 DSOEXPORT bool parsePath(const std::string& var_path, std::string& path,
197  std::string& var);
198 
200 //
202 //
204 //
208 DSOEXPORT as_object* findObject(const as_environment& ctx, const std::string& path,
209  const as_environment::ScopeStack* scope = 0);
210 
212 //
215 //
219 DisplayObject* findTarget(const as_environment& env, const std::string& path);
220 
221 inline VM&
223 {
224  return env.getVM();
225 }
226 
227 movie_root& getRoot(const as_environment& env);
228 string_table& getStringTable(const as_environment& env);
229 int getSWFVersion(const as_environment& env);
230 DSOTEXPORT Global_as& getGlobal(const as_environment &env);
231 
232 } // namespace gnash
233 
234 #endif
235 
236 
237 // Local Variables:
238 // mode: C++
239 // indent-tabs-mode: t
240 // End: