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Annotation of parser3/src/types/pa_vobject.h, revision 1.38.2.3

1.6       paf         1: /**    @file
1.7       paf         2:        Parser: @b object class decl.
                      3: 
1.38      paf         4:        Copyright (c) 2001, 2003 ArtLebedev Group (http://www.artlebedev.com)
1.16      paf         5:        Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.1       paf         6: */
                      7: 
                      8: #ifndef PA_VOBJECT_H
                      9: #define PA_VOBJECT_H
                     10: 
1.38.2.3! paf        11: static const char* IDENT_VOBJECT_H="$Date: 2003/01/29 09:16:17 $";
1.38.2.2  paf        12: 
                     13: // includes
1.19      paf        14: 
1.1       paf        15: #include "pa_vjunction.h"
                     16: #include "pa_vclass.h"
1.4       paf        17: #include "pa_vstateless_object.h"
1.38.2.2  paf        18: #include "pa_vfile.h"
1.6       paf        19: 
1.23      paf        20: // defines
                     21: 
                     22: #define BASE_NAME "BASE"
                     23: 
1.38.2.1  paf        24: // forwards
                     25: 
                     26: //class VObject; DECLARE_OBJECT_PTR(VObject)
                     27: 
1.26      paf        28: /**    parser class instance, stores 
                     29:        - class VObject::fclass;
                     30:        - fields VObject::ffields (dynamic, not static, which are stored in class).
                     31:        - links to base/derived instances [VObject::fbase, VObject::fderived]
1.6       paf        32: */
1.24      paf        33: class VObject: public VStateless_object {
1.38.2.1  paf        34: 
                     35:        VStateless_class& fclass;
                     36:        HashStringValue ffields;
                     37:        VObjectPtr fderived;
                     38:        ValuePtr fbase;
                     39: 
1.1       paf        40: public: // Value
                     41:        
1.24      paf        42:        const char *type() const { return fclass.name_cstr(); }
1.38.2.1  paf        43:        override ValuePtr as(const char *atype, bool looking_up);
1.12      parser     44: 
1.25      paf        45:        /// VObject: fclass
1.38.2.1  paf        46:        override VStateless_class *get_class() { return &fclass; }
                     47:        override VStateless_class *get_last_derived_class() { return get_last_derived().get_class(); }
                     48:        override ValuePtr base() { return fbase; }
                     49: 
                     50:        override bool is_defined() const;
                     51:        override ValuePtr as_expr_result(bool);
                     52:        override int as_int() const;
                     53:        override double as_double();
                     54:        override bool as_bool() const;
                     55:        override VFilePtr as_vfile(Pool& pool, String::Untaint_lang lang=String::UL_UNSPECIFIED, 
                     56:                bool origins_mode=false);
1.33      paf        57:        
1.38.2.3! paf        58:        override HashStringValue* get_hash(const String *source);
1.38.2.1  paf        59:        override Table *get_table();
1.33      paf        60: 
1.38.2.1  paf        61:        override ValuePtr get_element(ConstStringPtr aname, Value& aself, bool /*looking_up*/);
                     62:        override bool put_element(ConstStringPtr aname, ValuePtr avalue, bool replace);
1.1       paf        63: 
1.37      paf        64:        /// VObject: remember derived [the only client]
1.38.2.1  paf        65:        override VObjectPtr set_derived(VObjectPtr aderived) { 
                     66:                VObjectPtr result=fderived;
1.25      paf        67:                fderived=aderived;
1.34      paf        68:                return result;
1.24      paf        69:        }
                     70: 
1.1       paf        71: public: // creation
                     72: 
1.38.2.1  paf        73:        VObject(Pool& apool, VStateless_class& aclass): fclass(aclass) {
                     74:                if(VStateless_classPtr base_class=fclass.base_class()) {
                     75:                        fbase=fclass.base_class()->create_new_value();
                     76:                        fbase->set_derived(VObjectPtr(this));
                     77:                }
1.1       paf        78:        }
                     79: 
                     80: private:
                     81: 
1.37      paf        82:        VObject& get_last_derived() {
                     83:                return fderived?fderived->get_last_derived():*this;
1.26      paf        84:        }
1.37      paf        85: 
1.38.2.1  paf        86:        ValuePtr stateless_object__get_element(ConstStringPtr aname, Value& aself);
1.25      paf        87: };
                     88: 
                     89: class Temp_derived {
                     90:        Value& fvalue;
1.38.2.1  paf        91:        VObjectPtr fsaved_derived;
1.25      paf        92: public:
1.38.2.1  paf        93:        Temp_derived(Value& avalue, VObjectPtr aderived) : 
1.25      paf        94:                fvalue(avalue),
                     95:                fsaved_derived(avalue.set_derived(aderived)) {}
                     96:        ~Temp_derived() { fvalue.set_derived(fsaved_derived); }
1.1       paf        97: };
                     98: 
                     99: #endif