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Annotation of parser3/src/types/pa_vobject.h, revision 1.38.2.4

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: 
1.38.2.4! paf        11: static const char* IDENT_VOBJECT_H="$Date: 2003/01/29 11:20:50 $";
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"
1.38.2.1  paf        23: 
1.26      paf        24: /**    parser class instance, stores 
                     25:        - class VObject::fclass;
                     26:        - fields VObject::ffields (dynamic, not static, which are stored in class).
                     27:        - links to base/derived instances [VObject::fbase, VObject::fderived]
1.6       paf        28: */
1.24      paf        29: class VObject: public VStateless_object {
1.38.2.1  paf        30: 
                     31:        VStateless_class& fclass;
                     32:        HashStringValue ffields;
                     33:        VObjectPtr fderived;
                     34:        ValuePtr fbase;
                     35: 
1.1       paf        36: public: // Value
                     37:        
1.24      paf        38:        const char *type() const { return fclass.name_cstr(); }
1.38.2.1  paf        39:        override ValuePtr as(const char *atype, bool looking_up);
1.12      parser     40: 
1.25      paf        41:        /// VObject: fclass
1.38.2.1  paf        42:        override VStateless_class *get_class() { return &fclass; }
                     43:        override VStateless_class *get_last_derived_class() { return get_last_derived().get_class(); }
                     44:        override ValuePtr base() { return fbase; }
                     45: 
                     46:        override bool is_defined() const;
                     47:        override ValuePtr as_expr_result(bool);
                     48:        override int as_int() const;
                     49:        override double as_double();
                     50:        override bool as_bool() const;
                     51:        override VFilePtr as_vfile(Pool& pool, String::Untaint_lang lang=String::UL_UNSPECIFIED, 
                     52:                bool origins_mode=false);
1.33      paf        53:        
1.38.2.3  paf        54:        override HashStringValue* get_hash(const String *source);
1.38.2.1  paf        55:        override Table *get_table();
1.33      paf        56: 
1.38.2.1  paf        57:        override ValuePtr get_element(ConstStringPtr aname, Value& aself, bool /*looking_up*/);
                     58:        override bool put_element(ConstStringPtr aname, ValuePtr avalue, bool replace);
1.1       paf        59: 
1.37      paf        60:        /// VObject: remember derived [the only client]
1.38.2.1  paf        61:        override VObjectPtr set_derived(VObjectPtr aderived) { 
                     62:                VObjectPtr result=fderived;
1.25      paf        63:                fderived=aderived;
1.34      paf        64:                return result;
1.24      paf        65:        }
                     66: 
1.1       paf        67: public: // creation
                     68: 
1.38.2.1  paf        69:        VObject(Pool& apool, VStateless_class& aclass): fclass(aclass) {
                     70:                if(VStateless_classPtr base_class=fclass.base_class()) {
                     71:                        fbase=fclass.base_class()->create_new_value();
                     72:                        fbase->set_derived(VObjectPtr(this));
                     73:                }
1.1       paf        74:        }
                     75: 
                     76: private:
                     77: 
1.37      paf        78:        VObject& get_last_derived() {
                     79:                return fderived?fderived->get_last_derived():*this;
1.26      paf        80:        }
1.37      paf        81: 
1.38.2.1  paf        82:        ValuePtr stateless_object__get_element(ConstStringPtr aname, Value& aself);
1.25      paf        83: };
                     84: 
                     85: class Temp_derived {
                     86:        Value& fvalue;
1.38.2.1  paf        87:        VObjectPtr fsaved_derived;
1.25      paf        88: public:
1.38.2.1  paf        89:        Temp_derived(Value& avalue, VObjectPtr aderived) : 
1.25      paf        90:                fvalue(avalue),
                     91:                fsaved_derived(avalue.set_derived(aderived)) {}
                     92:        ~Temp_derived() { fvalue.set_derived(fsaved_derived); }
1.1       paf        93: };
                     94: 
                     95: #endif