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1 | ifndef SymbolAsString |
2 | |
3 | static WeakHasherMap<Symbol, Bool> symbol_map = new WeakHasherMap(new Hasher<Symbol>() {
|
4 | public int hashCode(Symbol symbol) { ret symbol.text.hashCode(); }
|
5 | public bool equals(Symbol a, Symbol b) {
|
6 | if (a == null) ret b == null; |
7 | ret b != null && eq(a.text, b.text); |
8 | } |
9 | }); |
10 | |
11 | endifndef |
12 | |
13 | static Symbol symbol(S s) {
|
14 | ifdef SymbolAsString |
15 | ret s; |
16 | endifdef |
17 | ifndef SymbolAsString |
18 | if (s == null) null; |
19 | synchronized(symbol_map) {
|
20 | // TODO: avoid object creation by passing the string to findKey |
21 | Symbol symbol = new(s, true); |
22 | Symbol existingSymbol = symbol_map.findKey(symbol); |
23 | if (existingSymbol == null) |
24 | symbol_map.put(existingSymbol = symbol, true); |
25 | ifdef symbol_debug |
26 | if (eqic(s, "Java")) |
27 | print("Symbol for " + s + ": " + symbolToStringFull(existingSymbol);
|
28 | endifdef |
29 | |
30 | ret existingSymbol; |
31 | } |
32 | endifndef |
33 | } |
34 | |
35 | static Symbol symbol(CharSequence s) {
|
36 | if (s == null) null; |
37 | ifdef SymbolAsString |
38 | ret str(s); |
39 | endifdef |
40 | ifndef SymbolAsString |
41 | if (s instanceof Symbol) ret (Symbol) s; |
42 | if (s instanceof S) ret symbol((S) s); |
43 | ret symbol(str(s)); |
44 | endifndef |
45 | } |
46 | |
47 | static Symbol symbol(O o) {
|
48 | ret symbol((CharSequence) o); |
49 | } |
Began life as a copy of #1010609
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| Snippet ID: | #1012686 |
| Snippet name: | symbol - make Symbol from String or CharSequence |
| Eternal ID of this version: | #1012686/42 |
| Text MD5: | e9d6bc4fb0088068d9e1c5b1c6b7b18c |
| Transpilation MD5: | ef3a1e38ca2ad4e5a4f0c5eede709c5d |
| Author: | stefan |
| Category: | javax |
| Type: | JavaX fragment (include) |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2021-09-08 03:48:33 |
| Source code size: | 1259 bytes / 49 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 580 / 1064 |
| Version history: | 41 change(s) |
| Referenced in: | [show references] |