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Annotation of parser3/src/types/pa_vobject.h, revision 1.38

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    ! paf        11: static const char* IDENT_VOBJECT_H="$Date: 2002/10/31 15:01:56 $";
1.19      paf        12: 
1.1       paf        13: #include "pa_vjunction.h"
                     14: #include "pa_vclass.h"
1.4       paf        15: #include "pa_vstateless_object.h"
1.6       paf        16: 
1.23      paf        17: // defines
                     18: 
                     19: #define BASE_NAME "BASE"
                     20: 
1.26      paf        21: /**    parser class instance, stores 
                     22:        - class VObject::fclass;
                     23:        - fields VObject::ffields (dynamic, not static, which are stored in class).
                     24:        - links to base/derived instances [VObject::fbase, VObject::fderived]
1.6       paf        25: */
1.24      paf        26: class VObject: public VStateless_object {
1.1       paf        27: public: // Value
                     28:        
1.24      paf        29:        const char *type() const { return fclass.name_cstr(); }
1.32      paf        30:        /*override*/ Value *as(const char *atype, bool looking_up);
1.12      parser     31: 
1.25      paf        32:        /// VObject: fclass
1.36      paf        33:        /*override*/ VStateless_class *get_class() { return &fclass; }
1.37      paf        34:        /*override*/ VStateless_class *get_last_derived_class() { return get_last_derived().get_class(); }
                     35:        /*override*/ Value *base() { return fbase; }
1.33      paf        36: 
                     37:        /*override*/ bool is_defined() const;
                     38:        /*override*/ Value *as_expr_result(bool);
                     39:        /*override*/ int as_int() const;
                     40:        /*override*/ double as_double();
                     41:        /*override*/ bool as_bool() const;
                     42:        /*override*/ VFile *as_vfile(String::Untaint_lang /*lang*/=String::UL_UNSPECIFIED, bool /*origins_mode*/=false);
                     43:        
                     44:        /*override*/ Hash *get_hash(const String *source);
                     45:        /*override*/ Table *get_table();
                     46: 
1.37      paf        47:        /*override*/ Value *get_element(const String& aname, Value& aself, bool /*looking_up*/);
1.29      paf        48:        /*override*/ bool put_element(const String& aname, Value *avalue, bool replace);
1.1       paf        49: 
1.37      paf        50:        /// VObject: remember derived [the only client]
1.26      paf        51:        /*override*/ VObject *set_derived(VObject *aderived) { 
                     52:                VObject *result=fderived;
1.25      paf        53:                fderived=aderived;
1.34      paf        54:                return result;
1.24      paf        55:        }
                     56: 
1.1       paf        57: public: // creation
                     58: 
1.24      paf        59:        VObject(Pool& apool, VStateless_class& aclass) : VStateless_object(apool), 
                     60:                fclass(aclass),
                     61:                ffields(apool),
                     62:                fderived(0),
1.25      paf        63:                fbase(fclass.base_class()?fclass.base_class()->create_new_value(apool):0) {
1.24      paf        64:                if(fbase)
1.25      paf        65:                        fbase->set_derived(this);
1.1       paf        66:        }
                     67: 
                     68: private:
                     69: 
1.37      paf        70:        VObject& get_last_derived() {
                     71:                return fderived?fderived->get_last_derived():*this;
1.26      paf        72:        }
1.37      paf        73: 
                     74:        Value *stateless_object__get_element(const String& aname, Value& aself);
1.26      paf        75: 
                     76: private:
                     77: 
1.24      paf        78:        VStateless_class& fclass;
1.1       paf        79:        Hash ffields;
1.26      paf        80:        VObject *fderived;
1.24      paf        81:        Value *fbase;
1.25      paf        82: };
                     83: 
                     84: class Temp_derived {
                     85:        Value& fvalue;
1.26      paf        86:        VObject *fsaved_derived;
1.25      paf        87: public:
1.26      paf        88:        Temp_derived(Value& avalue, VObject *aderived) : 
1.25      paf        89:                fvalue(avalue),
                     90:                fsaved_derived(avalue.set_derived(aderived)) {}
                     91:        ~Temp_derived() { fvalue.set_derived(fsaved_derived); }
1.1       paf        92: };
                     93: 
                     94: #endif