|
486
|
1 /* |
|
|
2 * js.cpp -- JavaScript C++14 wrapper for Duktape |
|
|
3 * |
|
|
4 * Copyright (c) 2013-2015 David Demelier <markand@malikania.fr> |
|
|
5 * |
|
|
6 * Permission to use, copy, modify, and/or distribute this software for any |
|
|
7 * purpose with or without fee is hereby granted, provided that the above |
|
|
8 * copyright notice and this permission notice appear in all copies. |
|
|
9 * |
|
|
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
|
|
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
|
|
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
|
|
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
|
|
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
|
|
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
|
|
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
|
|
17 */ |
|
|
18 |
|
|
19 #include "js.h" |
|
|
20 |
|
|
21 using namespace std::string_literals; |
|
|
22 |
|
|
23 namespace js { |
|
|
24 |
|
|
25 ErrorInfo Context::error(int index) |
|
|
26 { |
|
|
27 ErrorInfo error; |
|
|
28 |
|
|
29 index = duk_normalize_index(m_handle.get(), index); |
|
|
30 |
|
|
31 duk_get_prop_string(m_handle.get(), index, "name"); |
|
|
32 error.name = duk_to_string(m_handle.get(), -1); |
|
|
33 duk_get_prop_string(m_handle.get(), index, "message"); |
|
|
34 error.message = duk_to_string(m_handle.get(), -1); |
|
|
35 duk_get_prop_string(m_handle.get(), index, "fileName"); |
|
|
36 error.fileName = duk_to_string(m_handle.get(), -1); |
|
|
37 duk_get_prop_string(m_handle.get(), index, "lineNumber"); |
|
|
38 error.lineNumber = duk_to_int(m_handle.get(), -1); |
|
|
39 duk_get_prop_string(m_handle.get(), index, "stack"); |
|
|
40 error.stack = duk_to_string(m_handle.get(), -1); |
|
|
41 duk_pop_n(m_handle.get(), 5); |
|
|
42 |
|
|
43 return error; |
|
|
44 } |
|
|
45 |
|
|
46 void Context::pcall(unsigned nargs) |
|
|
47 { |
|
|
48 if (duk_pcall(m_handle.get(), nargs) != 0) { |
|
|
49 ErrorInfo info = error(-1); |
|
|
50 duk_pop(m_handle.get()); |
|
|
51 |
|
|
52 throw info; |
|
|
53 } |
|
|
54 } |
|
|
55 |
|
|
56 void Context::peval() |
|
|
57 { |
|
|
58 if (duk_peval(m_handle.get()) != 0) { |
|
|
59 ErrorInfo info = error(-1); |
|
|
60 duk_pop(m_handle.get()); |
|
|
61 |
|
|
62 throw info; |
|
|
63 } |
|
|
64 } |
|
|
65 |
|
|
66 void TypeInfo<Function>::push(Context &ctx, Function fn) |
|
|
67 { |
|
|
68 /* 1. Push function wrapper */ |
|
|
69 duk_push_c_function(ctx, [] (duk_context *ctx) -> duk_ret_t { |
|
|
70 Context context{ctx}; |
|
|
71 |
|
|
72 duk_push_current_function(ctx); |
|
|
73 duk_get_prop_string(ctx, -1, "\xff""\xff""js-func"); |
|
|
74 Function *f = static_cast<Function *>(duk_to_pointer(ctx, -1)); |
|
|
75 duk_pop_2(ctx); |
|
|
76 |
|
|
77 return static_cast<duk_ret_t>(f->function(context)); |
|
|
78 }, fn.nargs); |
|
|
79 |
|
|
80 /* 2. Store the moved function */ |
|
|
81 duk_push_pointer(ctx, new Function(std::move(fn))); |
|
|
82 duk_put_prop_string(ctx, -2, "\xff""\xff""js-func"); |
|
|
83 |
|
|
84 /* 3. Store deletion flags */ |
|
|
85 duk_push_boolean(ctx, false); |
|
|
86 duk_put_prop_string(ctx, -2, "\xff""\xff""js-deleted"); |
|
|
87 |
|
|
88 /* 4. Push and set a finalizer */ |
|
|
89 duk_push_c_function(ctx, [] (duk_context *ctx) { |
|
|
90 duk_get_prop_string(ctx, 0, "\xff""\xff""js-deleted"); |
|
|
91 |
|
|
92 if (!duk_to_boolean(ctx, -1)) { |
|
|
93 duk_push_boolean(ctx, true); |
|
|
94 duk_put_prop_string(ctx, 0, "\xff""\xff""js-deleted"); |
|
|
95 duk_get_prop_string(ctx, 0, "\xff""\xff""js-func"); |
|
|
96 delete static_cast<Function *>(duk_to_pointer(ctx, -1)); |
|
|
97 duk_pop(ctx); |
|
|
98 } |
|
|
99 |
|
|
100 duk_pop(ctx); |
|
|
101 |
|
|
102 return 0; |
|
|
103 }, 1); |
|
|
104 duk_set_finalizer(ctx, -2); |
|
|
105 } |
|
|
106 |
|
|
107 } // !js |
