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Annotation of parser3/src/types/pa_vdouble.h, revision 1.42.2.2

1.11      paf         1: /** @file
1.16      paf         2:        Parser: @b double parser class decl.
1.11      paf         3: 
1.42      paf         4:        Copyright (c) 2001, 2003 ArtLebedev Group (http://www.artlebedev.com)
1.32      paf         5:        Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.1       paf         6: */
                      7: 
                      8: #ifndef PA_VDOUBLE_H
                      9: #define PA_VDOUBLE_H
1.38      paf        10: 
1.42.2.2! paf        11: static const char* IDENT_VDOUBLE_H="$Date: 2003/01/24 14:36:11 $";
1.1       paf        12: 
1.19      paf        13: #include "classes.h"
1.9       paf        14: #include "pa_common.h"
1.5       paf        15: #include "pa_vstateless_object.h"
1.17      paf        16: 
                     17: extern Methoded *double_class;
1.1       paf        18: 
1.11      paf        19: /// value of type 'double'. implemented with @c double
1.4       paf        20: class VDouble : public VStateless_object {
1.1       paf        21: public: // Value
                     22: 
1.42.2.1  paf        23:        override const char *type() const { return "double"; }
                     24:        override VStateless_class *get_class() { return double_class; }
1.37      paf        25: 
1.24      parser     26:        /// VDouble: clone
1.42.2.1  paf        27:        override ValuePtr as_expr_result(bool ) { return ValuePtr(new VDouble(fdouble)); }
1.1       paf        28: 
1.30      paf        29:        /** VDouble: fdouble 
                     30:        */
1.42.2.1  paf        31:        override ConstStringPtr get_string(Pool& pool) {
1.35      paf        32:                char local_buf[MAX_NUMBER];
                     33:                size_t size=snprintf(local_buf, MAX_NUMBER, "%g", fdouble);
1.42.2.2! paf        34:                char *pool_buf=pool.copy(local_buf, size);
1.42.2.1  paf        35: 
                     36:                return ConstStringPtr(new String(pool_buf, size));
1.1       paf        37:        }
1.11      paf        38:        /// VDouble: fdouble
1.42.2.1  paf        39:        override double as_double() const { return fdouble; }
1.21      parser     40:        /// VDouble: fdouble
1.42.2.1  paf        41:        override int as_int() const { return (int)round(fdouble); }
1.11      paf        42:        /// VDouble: 0 or !0
1.42.2.1  paf        43:        override bool as_bool() const { return fdouble!=0; }
1.1       paf        44: 
                     45: public: // usage
                     46: 
1.42.2.1  paf        47:        VDouble(double adouble): fdouble(adouble) {}
1.1       paf        48: 
                     49:        void inc(double increment) { fdouble+=increment; }
1.7       paf        50:        void mul(double k) { fdouble*=k; }
                     51:        void div(double d) { fdouble/=d; }
                     52:        void mod(int d) { fdouble=((int)fdouble)%d; }
1.1       paf        53: 
                     54: private:
                     55: 
                     56:        double fdouble;
                     57: 
                     58: };
                     59: 
                     60: #endif