Annotation of parser3/src/classes/random.C, revision 1.11
1.1 paf 1: /** @file
1.9 paf 2: Parser: @b random parser class.
1.1 paf 3:
4: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
5:
6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
7:
1.11 ! paf 8: $Id: random.C,v 1.10 2001/04/28 08:43:48 paf Exp $
1.1 paf 9: */
10:
11: #include "pa_config_includes.h"
12: #include "pa_common.h"
13: #include "pa_vint.h"
14: #include "pa_request.h"
15:
1.10 paf 16: // defines
1.1 paf 17:
1.10 paf 18: #define RANDOM_CLASS_NAME "random"
19:
20: // class
21:
22: class MRandom : public Methoded {
23: public:
24: MRandom(Pool& pool);
1.11 ! paf 25: public: // Methoded
1.10 paf 26: bool used_directly() { return true; }
27: };
1.1 paf 28:
29: // methods
30:
1.6 paf 31: static void _generate(Request& r, const String& method_name, MethodParams *params) {
1.1 paf 32: Pool& pool=r.pool();
33:
1.6 paf 34: Value& range=params->get_junction(0, "range must be expression");
1.4 paf 35: uint max=params->size()?(uint)r.process(range).as_double():0;
1.2 paf 36: if(max<=1)
1.3 paf 37: PTHROW(0, 0,
1.2 paf 38: &method_name,
39: "bad range [0..%u]", max);
1.1 paf 40:
41: r.write_no_lang(*new(pool) VInt(pool, rand()%max));
42: }
43:
1.10 paf 44: // constructor
45:
46: MRandom::MRandom(Pool& apool) : Methoded(apool) {
47: set_name(*NEW String(pool(), RANDOM_CLASS_NAME));
48:
1.1 paf 49:
50: // setting seed
51: srand(getpid()+time(NULL)); rand();
52:
1.10 paf 53:
1.1 paf 54: // ^random.generate[]
55: // ^random.generate(range)
1.10 paf 56: add_native_method("generate", Method::CT_STATIC, _generate, 1, 1);
57: }
58:
59: // creator
60:
61: Methoded *MRandom_create(Pool& pool) {
62: return new(pool) MRandom(pool);
1.1 paf 63: }
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