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Annotation of parser3/src/types/pa_vdouble.h, revision 1.42.2.3

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: 
1.42.2.3! paf        11: static const char* IDENT_VDOUBLE_H="$Date: 2003/01/28 10:23:32 $";
        !            12: 
        !            13: // includes
1.1       paf        14: 
1.19      paf        15: #include "classes.h"
1.9       paf        16: #include "pa_common.h"
1.5       paf        17: #include "pa_vstateless_object.h"
1.42.2.3! paf        18: 
        !            19: // externs
1.17      paf        20: 
                     21: extern Methoded *double_class;
1.1       paf        22: 
1.11      paf        23: /// value of type 'double'. implemented with @c double
1.4       paf        24: class VDouble : public VStateless_object {
1.1       paf        25: public: // Value
                     26: 
1.42.2.1  paf        27:        override const char *type() const { return "double"; }
                     28:        override VStateless_class *get_class() { return double_class; }
1.37      paf        29: 
1.24      parser     30:        /// VDouble: clone
1.42.2.1  paf        31:        override ValuePtr as_expr_result(bool ) { return ValuePtr(new VDouble(fdouble)); }
1.1       paf        32: 
1.30      paf        33:        /** VDouble: fdouble 
                     34:        */
1.42.2.1  paf        35:        override ConstStringPtr get_string(Pool& pool) {
1.35      paf        36:                char local_buf[MAX_NUMBER];
                     37:                size_t size=snprintf(local_buf, MAX_NUMBER, "%g", fdouble);
1.42.2.2  paf        38:                char *pool_buf=pool.copy(local_buf, size);
1.42.2.1  paf        39: 
                     40:                return ConstStringPtr(new String(pool_buf, size));
1.1       paf        41:        }
1.11      paf        42:        /// VDouble: fdouble
1.42.2.1  paf        43:        override double as_double() const { return fdouble; }
1.21      parser     44:        /// VDouble: fdouble
1.42.2.1  paf        45:        override int as_int() const { return (int)round(fdouble); }
1.11      paf        46:        /// VDouble: 0 or !0
1.42.2.1  paf        47:        override bool as_bool() const { return fdouble!=0; }
1.1       paf        48: 
                     49: public: // usage
                     50: 
1.42.2.1  paf        51:        VDouble(double adouble): fdouble(adouble) {}
1.1       paf        52: 
                     53:        void inc(double increment) { fdouble+=increment; }
1.7       paf        54:        void mul(double k) { fdouble*=k; }
                     55:        void div(double d) { fdouble/=d; }
                     56:        void mod(int d) { fdouble=((int)fdouble)%d; }
1.1       paf        57: 
                     58: private:
                     59: 
                     60:        double fdouble;
                     61: 
                     62: };
                     63: 
                     64: #endif