Annotation of parser3/src/types/pa_vdouble.h, revision 1.33
1.11 paf 1: /** @file
1.16 paf 2: Parser: @b double parser class decl.
1.11 paf 3:
1.31 paf 4: Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)
1.32 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.1 paf 6:
1.33 ! paf 7: $Id: pa_vdouble.h,v 1.32 2002/02/08 08:30:19 paf Exp $
1.1 paf 8: */
9:
10: #ifndef PA_VDOUBLE_H
11: #define PA_VDOUBLE_H
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:
23: const char *type() const { return "double"; }
1.24 parser 24: /// VDouble: clone
1.27 parser 25: Value *as_expr_result(bool ) { return NEW VDouble(pool(), fdouble); }
1.1 paf 26:
1.30 paf 27: /** VDouble: fdouble
28: @test
29: now $a(2*2) 2*2 becomes double, then string, then double again!! get rid of that
30: */
1.1 paf 31: const String *get_string() {
1.6 paf 32: char *buf=(char *)pool().malloc(MAX_NUMBER);
1.22 parser 33: String *result=NEW String(pool());
1.23 parser 34: result->APPEND_CLEAN(
1.33 ! paf 35: buf, snprintf(buf, MAX_NUMBER, "%g", fdouble),
1.23 parser 36: name().origin().file, name().origin().line);
1.22 parser 37: return result;
1.1 paf 38: }
1.11 paf 39: /// VDouble: fdouble
1.25 parser 40: double as_double() const { return fdouble; }
1.21 parser 41: /// VDouble: fdouble
1.25 parser 42: int as_int() const { return (int)fdouble; }
1.11 paf 43: /// VDouble: 0 or !0
1.25 parser 44: bool as_bool() const { return fdouble!=0; }
1.10 paf 45:
46: protected: // VAliased
47:
1.13 paf 48: /// disable .CLASS element. @see VAliased::get_element
1.15 paf 49: bool hide_class() { return true; }
1.1 paf 50:
51: public: // usage
52:
1.4 paf 53: VDouble(Pool& apool, double adouble) : VStateless_object(apool, *double_class),
1.1 paf 54: fdouble(adouble) {
55: }
56:
57: void inc(double increment) { fdouble+=increment; }
1.7 paf 58: void mul(double k) { fdouble*=k; }
59: void div(double d) { fdouble/=d; }
60: void mod(int d) { fdouble=((int)fdouble)%d; }
1.1 paf 61:
62: private:
63:
64: double fdouble;
65:
66: };
67:
68: #endif
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