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1 | sclass VarBasedArithmeticEngine {
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2 | MapSO vars = syncTreeMap(); |
3 | |
4 | sclass NotRunYet {}
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5 | static new NotRunYet notRunYet; |
6 | |
7 | record SetVar(S var, O value) is Runnable {
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8 | run { setVar(var, value); }
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9 | } |
10 | |
11 | // SINGLE-OPS (one input variable, one output variable) |
12 | |
13 | macro ctors {
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14 | *() {}
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15 | *(S *inVar, S *outVar) {}
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16 | } |
17 | |
18 | abstract noeq record SingleOp(S inVar, S outVar) is Runnable {
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19 | transient O value = notRunYet; |
20 | |
21 | abstract O perform(O arg); |
22 | |
23 | run { get(); }
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24 | |
25 | O get() {
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26 | value = perform(getVar(inVar)); |
27 | setVar(outVar, value); |
28 | ret value; |
29 | } |
30 | } |
31 | |
32 | class Sqrt > SingleOp { ctors
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33 | Double perform(O arg) {
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34 | ret sqrt(toDouble(arg)); |
35 | } |
36 | } |
37 | |
38 | // MULTI-OPS (multiple input variables, one output variable) |
39 | |
40 | abstract noeq record MultiOp(LS inVars, S outVar) is Runnable {
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41 | transient O value = notRunYet; |
42 | |
43 | abstract O perform(L values); |
44 | |
45 | *(S... vars) {
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46 | outVar = last(vars); |
47 | inVars = asListMinusLast(vars); |
48 | } |
49 | |
50 | run { get(); }
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51 | |
52 | O get() {
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53 | value = perform(map getVar(inVars); |
54 | setVar(outVar, value); |
55 | ret value; |
56 | } |
57 | } |
58 | |
59 | macro ctors {
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60 | *() {}
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61 | *(LS *inVars, S *outVar) {}
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62 | *(S... vars) { super(vars); }
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63 | } |
64 | |
65 | // add doubles |
66 | class DAdd > MultiOp { ctors
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67 | Double perform(L values) {
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68 | ret doubleSum(allToDouble(values)); |
69 | } |
70 | } |
71 | |
72 | // multiply doubles |
73 | persistent class DMul > MultiOp { ctors
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74 | Double perform(L values) {
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75 | ret doubleProduct(allToDouble(values)); |
76 | } |
77 | } |
78 | |
79 | // subtract doubles (a-b-c...) |
80 | class DMinus > MultiOp { ctors
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81 | Double perform(L values) {
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82 | ret doubleMultiMinus(allToDouble(values)); |
83 | } |
84 | } |
85 | |
86 | // division (a/b/c...) with division by zero giving 0 |
87 | class DDiv > MultiOp { ctors
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88 | Double perform(L values) {
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89 | ret doubleMultiRatio(allToDouble(values)); |
90 | } |
91 | } |
92 | |
93 | O getVar aka get(S var) { ret vars.get(var); }
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94 | void setVar aka set(S var, O value) { if (var != null) vars.put(var, value); }
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95 | |
96 | *(O... _) {
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97 | addParamsToMap_inPlace(vars, _); |
98 | } |
99 | } |
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| Snippet ID: | #1032649 |
| Snippet name: | VarBasedArithmeticEngine |
| Eternal ID of this version: | #1032649/13 |
| Text MD5: | 0708e4db737b302ca58e932ea07c163c |
| Transpilation MD5: | b83a6bafd657ba9c806d4d7c0600953f |
| Author: | stefan |
| Category: | javax |
| Type: | JavaX fragment (include) |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2021-09-30 05:25:20 |
| Source code size: | 2175 bytes / 99 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 137 / 271 |
| Version history: | 12 change(s) |
| Referenced in: | [show references] |