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Annotation of parser3/src/types/pa_vvoid.h, revision 1.15

1.1       parser      1: /** @file
                      2:        Parser: @b void parser class.
                      3: 
1.7       paf         4:        Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)
1.8       paf         5:        Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.1       parser      6: */
                      7: 
                      8: #ifndef PA_VVOID_H
                      9: #define PA_VVOID_H
1.10      paf        10: 
1.15    ! paf        11: static const char* IDENT_VVOID_H="$Date: 2002/10/31 12:22:16 $";
1.1       parser     12: 
1.3       parser     13: #include "classes.h"
1.1       parser     14: #include "pa_vstateless_object.h"
                     15: #include "pa_globals.h"
                     16: 
                     17: extern Methoded *void_class;
                     18: 
                     19: /// value of type 'void'. ex: usually $sjfklsjfksjdfk has this type
                     20: class VVoid : public VStateless_object {
                     21: public: // Value
                     22: 
                     23:        const char *type() const { return "void"; }
1.9       paf        24:        VStateless_class *get_class() { return void_class; }
1.1       parser     25: 
                     26:        /// VVoid: ""
1.5       parser     27:        const String *get_string() { return NEW String(pool()); }
1.1       parser     28:        /// VVoid: false
1.2       parser     29:        bool as_bool() const { return false; }
                     30:        /// VVoid: false
1.1       parser     31:        bool is_defined() const { return false; }
                     32:        /// VVoid: 0
1.2       parser     33:        double as_double() const { return 0; }
1.1       parser     34:        /// VVoid: 0
1.2       parser     35:        int as_int() const { return 0; }
1.1       parser     36:        /// VVoid: this
                     37:        Value *as_expr_result(bool return_string_as_is=false) { return this; }
                     38: 
                     39: 
                     40:        /// VVoid: methods
1.15    ! paf        41:        Value *get_element(const String& aname, Value& aself, bool looking_up) {
1.1       parser     42:                // methods
1.14      paf        43:                if(Value *result=VStateless_object::get_element(aname, aself, looking_up))
1.1       parser     44:                        return result;
                     45: 
                     46:                return NEW VVoid(pool());
                     47:        }
                     48: 
                     49: public: // usage
                     50: 
1.9       paf        51:        VVoid(Pool& apool) : VStateless_object(apool) {}
1.1       parser     52: 
                     53: };
                     54: 
                     55: #endif