Annotation of parser3/src/include/pa_wwrapper.h, revision 1.1
1.1 ! paf 1: /*
! 2: $Id: pa_wcontext.h,v 1.12 2001/02/23 14:18:26 paf Exp $
! 3: */
! 4:
! 5: #ifndef PA_WWRAPPER_H
! 6: #define PA_WWRAPPER_H
! 7:
! 8: #include "pa_wcontext.h"
! 9:
! 10: class WWrapper : public WContext {
! 11: public: // Value
! 12:
! 13: // all: for error reporting after fail(), etc
! 14: const char *type() const { return "WWrapper"; }
! 15: // wcontext: transparent
! 16: Value *get_element(const String& name) { return check_value()->get_element(name); }
! 17: // wcontext: transparent
! 18: void put_element(const String& name, Value *avalue){
! 19: if(!fvalue)
! 20: fvalue=NEW VHash(pool());
! 21: fvalue->put_element(name, avalue);
! 22: }
! 23:
! 24: // wcontext: transparent
! 25: Method *get_method(const String& name) const { return check_value()->get_method(name); }
! 26: // wcontext: none yet | transparent
! 27: VClass *get_class() const { return fvalue?fvalue->get_class():0; }
! 28: // wcontext: none yet | transparent
! 29: bool is_or_derived_from(VClass& ancestor) { return fvalue?fvalue->is_or_derived_from(ancestor):false; }
! 30:
! 31: public: // usage
! 32:
! 33: WWrapper(Pool& apool, Value *avalue) : WContext(apool, avalue) {
! 34: }
! 35:
! 36: private:
! 37: // raises an exception on 0 value
! 38: Value *check_value() const {
! 39: if(!fvalue)
! 40: THROW(0,0,
! 41: 0,
! 42: "accessing wcontext without value");
! 43:
! 44: return fvalue;
! 45: }
! 46: };
! 47:
! 48: #endif
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