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1 | !752 |
2 | |
3 | please include function bigint. |
4 | |
5 | // callable function/method names |
6 | static L<S> callable = litlist("bigint", "compareTo");
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7 | |
8 | p {
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9 | printStructure(eval([[ bigint("123") ]]));
|
10 | boolean oops = false; |
11 | try {
|
12 | eval([[ print("test") ]]); // not callable
|
13 | oops = true; |
14 | } catch (Exception e) { /* ok */ }
|
15 | assertFalse(oops); |
16 | assertEquals(-1, eval([[ bigint("123").compareTo(bigint("234")) ]]));
|
17 | assertEquals(1, eval([[ bigint("567").compareTo(bigint("-123")) ]]));
|
18 | |
19 | print("All OK!");
|
20 | } |
21 | |
22 | static O eval(S text) {
|
23 | L e = jparse(text, "exp"); |
24 | printStructure(e); |
25 | L<S> tok = javaTok(text); // XX: better get from parser |
26 | |
27 | ret evalExp(e, tok); |
28 | } |
29 | |
30 | static O evalExp(L e, L<S> tok) {
|
31 | // e == [1, 9, "call", "<identifier> ( <explist_opt> )", [1, 3, "identifier"], [5, 7, "quoted"]] |
32 | |
33 | S cl = getString(e, 2); |
34 | |
35 | if (eq(cl, "quoted")) |
36 | ret unquote(get(tok, (int) get(e, 0))); |
37 | |
38 | if (eq(cl, "call")) {
|
39 | ret evalCall(e, tok, getMainClass()); |
40 | } |
41 | |
42 | if (eq(cl, "methodcall")) {
|
43 | L e_exp = cast get(e, 4); // submatch 1 |
44 | L e_call = cast get(e, 5); // submatch 2 |
45 | |
46 | O obj = evalExp(e_exp, tok); |
47 | ret evalCall(e_call, tok, obj); |
48 | } |
49 | |
50 | throw fail("woot exp: " + structure(e));
|
51 | } |
52 | |
53 | static O evalCall(L e, L<S> tok, O obj) {
|
54 | L e_name = cast get(e, 4); // submatch 1 |
55 | L e_args = cast get(e, 5); // submatch 2 |
56 | |
57 | S fname = get(tok, (int) get(e_name, 0)); |
58 | L args = evalArgs(e_args, tok); |
59 | |
60 | ret callMethod(obj, fname, args); |
61 | } |
62 | |
63 | static L evalArgs(L e, L<S> tok) {
|
64 | ret litlist(evalExp(e, tok)); // todo... |
65 | } |
66 | |
67 | static L jparse(S text, S className) {
|
68 | O parser = run("#1002369");
|
69 | //setOpt(parser, "debug", true); |
70 | O parseResult = call(parser, "jparse", text); |
71 | ret (L) call(parseResult, "explain", className); |
72 | } |
73 | |
74 | static O callMethod(O obj, S fname, L args) {
|
75 | boolean mayCall = mayCallFunction(fname); |
76 | if (!hasMethodNamed(obj, fname)) |
77 | throw fail("Method not defined in " + getClassName(obj) + (mayCall ? "" : ", also not callable") + ": " + fname);
|
78 | |
79 | if (!mayCallFunction(fname)) |
80 | throw fail("Not allowed to call method: " + fname);
|
81 | |
82 | ret call(obj, fname, toObjectArray(args)); |
83 | } |
84 | |
85 | static boolean mayCallFunction(S fname) {
|
86 | ret callable.contains(fname); |
87 | } |
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| Snippet ID: | #1002385 |
| Snippet name: | Java Eval Test :-) |
| Eternal ID of this version: | #1002385/1 |
| Text MD5: | 64d0c779ea29dc56f7d948f803bdbbcc |
| Transpilation MD5: | d2d0be9966da42d7b96d242352a7bb4f |
| Author: | stefan |
| Category: | javax |
| Type: | JavaX source code |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2016-01-19 01:02:25 |
| Source code size: | 2309 bytes / 87 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 653 / 959 |
| Referenced in: | [show references] |