1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
#include <QtCore>
#include <lua.hpp>
extern "C" {
#include <luv.h>
}
#include "AsyncEventLoop.hpp"
#include "LuaRuntime.hpp"
const char *uv_global_name = "uv";
const char *web_global_name = "web";
LuaRuntime::LuaRuntime() {
state = luaL_newstate();
luaL_openlibs(state);
// Load `web`
luaL_Reg weblib[] = {
{"open", &LuaRuntime::lua_onUrlOpen},
{"tabopen", &LuaRuntime::lua_onUrlTabOpen},
{NULL, NULL},
};
luaL_newlib(state, weblib);
lua_setglobal(state, web_global_name);
}
void LuaRuntime::startEventLoop() {
if (eventLoop != nullptr)
stopEventLoop();
// Init event loop
eventLoop = new AsyncEventLoop();
// Load `uv` (luv)
luv_set_loop(state, eventLoop->getUVLoop());
luaopen_luv(state);
lua_setglobal(state, uv_global_name);
}
void LuaRuntime::stopEventLoop() {
if (eventLoop == nullptr)
return;
delete eventLoop;
eventLoop = nullptr;
// Clear the uv global
lua_pushnil(state);
lua_setglobal(state, uv_global_name);
lua_gc(state, LUA_GCCOLLECT, 0);
}
void LuaRuntime::evaluate(QString code) {
eventLoop->queueTask([this, code]() {
if (luaL_dostring(state, code.toStdString().c_str())) {
auto value = lua_tostring(state, -1);
lua_pop(state, 1);
qDebug() << "Lua Error: " << value;
emit evaluationFailed(value);
} else {
auto value = getValue(-1);
lua_pop(state, 1);
qDebug() << "result: " << value;
emit evaluationCompleted(value);
}
});
}
QVariant LuaRuntime::evaluateSync(QString code) {
auto result = luaL_dostring(state, code.toStdString().c_str());
return getValue(-1); // TODO: error handling
}
QVariant LuaRuntime::getValue(int idx) {
if (lua_isstring(state, idx))
return lua_tostring(state, idx);
if (lua_isnumber(state, idx))
return lua_tonumber(state, idx);
if (lua_isboolean(state, idx))
return lua_toboolean(state, idx);
if (lua_isnil(state, idx))
return 0; // TODO: nil representation
return lua_tostring(state, idx);
}
int LuaRuntime::lua_onUrlOpen(lua_State *state) {
const char *url = luaL_optstring(state, 1, "");
auto runtime = LuaRuntime::instance();
emit runtime->urlOpened(url, OpenType::OpenUrl);
return 1;
}
int LuaRuntime::lua_onUrlTabOpen(lua_State *state) {
const char *url = luaL_optstring(state, 1, "");
auto runtime = LuaRuntime::instance();
emit runtime->urlOpened(url, OpenType::OpenUrlInTab);
return 1;
}
LuaRuntime::~LuaRuntime() {
stopEventLoop();
lua_close(state);
state = nullptr;
}
|
