Annotation of parser3/src/include/pa_wwrapper.h, revision 1.8
1.1 paf 1: /*
1.8 ! paf 2: $Id: pa_wwrapper.h,v 1.7 2001/02/25 14:23:31 paf Exp $
1.1 paf 3: */
4:
5: #ifndef PA_WWRAPPER_H
6: #define PA_WWRAPPER_H
7:
8: #include "pa_wcontext.h"
1.3 paf 9: #include "pa_exception.h"
1.1 paf 10:
11: class WWrapper : public WContext {
12: public: // Value
13:
14: // all: for error reporting after fail(), etc
15: const char *type() const { return "WWrapper"; }
1.4 paf 16: // wwrapper: transparent
1.1 paf 17: Value *get_element(const String& name) { return check_value()->get_element(name); }
1.4 paf 18: // wwrapper: transparent
1.1 paf 19: void put_element(const String& name, Value *avalue){
20: if(!fvalue)
21: fvalue=NEW VHash(pool());
22: fvalue->put_element(name, avalue);
23: }
24:
25: public: // usage
26:
1.7 paf 27: WWrapper(Pool& apool, Value *avalue, bool aconstructed) :
28: WContext(apool, avalue, aconstructed) {
1.1 paf 29: }
30:
31: private:
32: // raises an exception on 0 value
33: Value *check_value() const {
34: if(!fvalue)
35: THROW(0,0,
36: 0,
1.3 paf 37: "accessing wrapper without value");
1.1 paf 38:
39: return fvalue;
40: }
41: };
42:
43: #endif
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