FixedMapClass - IMapImplementationPolicy using only one class (e.g. HashMap) [1031860]

< > BotCompany Repo | #1031860 // FixedMapClass - IMapImplementationPolicy using only one class (e.g. HashMap)

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

srecord FixedMapClass(Class<? extends Map> clazz) implements IMapImplementationPolicy {
  bool sync = true, nullOnEmpty = false;
  
  public <A, B> Map<A, B> makeSingletonMap(A key, B value) {
    ret put(null, key, value);
  }
  
  public <A, B> Map<A, B> put(Map<A, B> map, A key, B value) {
    if (map == null) map = newInstance(clazz);
    if (sync)
      syncPut(map, key, value);
    else
      map.put(key, value);
    ret map;
  }
  
  public <A, B> Map<A, B> remove(Map<A, B> map, O key) {
    if (map == null) null;
    if (sync)
      syncRemove(map, (A) key);
    else
      map.remove(key);
    ret nullOnEmpty && empty(map) ? null : map;
  }
}

Author comment

Began life as a copy of #1031859

Travelled to 3 computer(s): bhatertpkbcr, mqqgnosmbjvj, pyentgdyhuwx

Snippet ID:

#1031860

Snippet name:

FixedMapClass - IMapImplementationPolicy using only one class (e.g. HashMap)

Eternal ID of this version:

#1031860/11

Text MD5:

eccdb26db84f9690d30634757ec5d668

Transpilation MD5:

c60ddcfa5112575d7468bfbdaf6124a4

Author:

stefan

Category:

javax

Type:

JavaX fragment (include)

Public (visible to everyone):

Yes

Archived (hidden from active list):

Created/modified:

2021-07-16 07:02:08

Source code size:

682 bytes / 25 lines

Pitched / IR pitched:

No / No

Views / Downloads:

168 / 324

Version history:

10 change(s)

Referenced in:

[show references]

1	srecord FixedMapClass(Class<? extends Map> clazz) implements IMapImplementationPolicy {
2	bool sync = true, nullOnEmpty = false;
3
4	public <A, B> Map<A, B> makeSingletonMap(A key, B value) {
5	ret put(null, key, value);
6	}
7
8	public <A, B> Map<A, B> put(Map<A, B> map, A key, B value) {
9	if (map == null) map = newInstance(clazz);
10	if (sync)
11	syncPut(map, key, value);
12	else
13	map.put(key, value);
14	ret map;
15	}
16
17	public <A, B> Map<A, B> remove(Map<A, B> map, O key) {
18	if (map == null) null;
19	if (sync)
20	syncRemove(map, (A) key);
21	else
22	map.remove(key);
23	ret nullOnEmpty && empty(map) ? null : map;
24	}
25	}