ManagedStringPool (is itself not persistent) [1031664]

< > BotCompany Repo | #1031664 // ManagedStringPool (is itself not persistent)

JavaX fragment (include) [tags: use-pretranspiled]

sclass ManagedStringPool {
  replace Addr with int.
  
  ManagedIntObjects_v1 mem;
  
  *(ManagedIntObjects_v1 *mem) {}
  
  sclass Entry {
    Addr addr;
    int references;
    
    *(Addr *addr, int *references) {}
  }
  
  new Map<S, Entry> map;
  
  // stores a string (creates if necessary and registers a reference)
  Addr store(S s) {
    Entry e = map.get(s);
    if (e == null)
      e = new Entry(mem.newString(s), 0);
    e.references++;
    ret e.addr;
  }
  
  // just queries
  Addr peek(S s) {
    Entry e = map.get(s);
    ret e == null ? 0 : e.addr;
  }
  
  // remove a reference
  void unstore(S s) {
    Entry e = map.get(s);
    if (e == null) fail("ManagedStringPool user error");
    if (--e.references == 0)
      map.remove(s);
  }
}

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Snippet ID:

#1031664

Snippet name:

ManagedStringPool (is itself not persistent)

Eternal ID of this version:

#1031664/3

Text MD5:

6aac11b847bf90ddce95dfff9ba5de3b

Transpilation MD5:

4fd313d5043749c8b048e8ee4be04ffb

Author:

stefan

Category:

javax

Type:

JavaX fragment (include)

Public (visible to everyone):

Yes

Archived (hidden from active list):

Created/modified:

2021-06-25 09:17:46

Source code size:

797 bytes / 39 lines

Pitched / IR pitched:

No / No

Views / Downloads:

194 / 273

Version history:

2 change(s)

Referenced in:

[show references]

1	sclass ManagedStringPool {
2	replace Addr with int.
3
4	ManagedIntObjects_v1 mem;
5
6	(ManagedIntObjects_v1 mem) {}
7
8	sclass Entry {
9	Addr addr;
10	int references;
11
12	(Addr addr, int *references) {}
13	}
14
15	new Map<S, Entry> map;
16
17	// stores a string (creates if necessary and registers a reference)
18	Addr store(S s) {
19	Entry e = map.get(s);
20	if (e == null)
21	e = new Entry(mem.newString(s), 0);
22	e.references++;
23	ret e.addr;
24	}
25
26	// just queries
27	Addr peek(S s) {
28	Entry e = map.get(s);
29	ret e == null ? 0 : e.addr;
30	}
31
32	// remove a reference
33	void unstore(S s) {
34	Entry e = map.get(s);
35	if (e == null) fail("ManagedStringPool user error");
36	if (--e.references == 0)
37	map.remove(s);
38	}
39	}