Annotation of parser3/src/classes/random.C, revision 1.9.2.2
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:
1.9.2.2 ! paf 8: $Id: random.C,v 1.9.2.1 2001/04/27 15:19:23 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:
1.9.2.1 paf 16: // defines
1.1 paf 17:
1.9.2.1 paf 18: #define RANDOM_CLASS_NAME "random"
19:
20: // class
21:
22: class MRandom : public Methoded {
23: public:
24: MRandom(Pool& pool);
25: bool used_directly() { return true; }
26: };
1.1 paf 27:
28: // methods
29:
1.9.2.1 paf 30: /** ^random.generate[]
31: ^random.generate(range)
32: */
1.6 paf 33: static void _generate(Request& r, const String& method_name, MethodParams *params) {
1.1 paf 34: Pool& pool=r.pool();
35:
1.6 paf 36: Value& range=params->get_junction(0, "range must be expression");
1.4 paf 37: uint max=params->size()?(uint)r.process(range).as_double():0;
1.2 paf 38: if(max<=1)
1.3 paf 39: PTHROW(0, 0,
1.2 paf 40: &method_name,
41: "bad range [0..%u]", max);
1.1 paf 42:
43: r.write_no_lang(*new(pool) VInt(pool, rand()%max));
44: }
45:
1.9.2.1 paf 46: // constructor
47:
1.9.2.2 ! paf 48: MRandom::MRandom(Pool& pool) : Methoded(pool) {
1.9.2.1 paf 49: set_name(NEW String(pool, RANDOM_CLASS_NAME));
1.1 paf 50:
51: // setting seed
52: srand(getpid()+time(NULL)); rand();
53:
54: // ^random.generate[]
55: // ^random.generate(range)
1.9.2.1 paf 56: add_native_method("generate", Method::CT_STATIC, _generate, 1, 1);
57: }
58:
59: // creator
60:
61: Methoded *MRandom_create(Pool& pool) {
1.9.2.2 ! paf 62: return new(pool) MRandom(pool);
1.1 paf 63: }
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