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authorLi Jin <dragon-fly@qq.com>2022-02-24 10:20:06 +0800
committerLi Jin <dragon-fly@qq.com>2022-02-24 10:20:19 +0800
commitfa9aad9300fd5c1b7ae697881d787d015fa9ef24 (patch)
treea3860d3a535ce269ff23be17cdee174bf7416c2e /win-build/Lua51/ldblib.c
parent63878b93b0f142af74b397a02b2c80be039b03ec (diff)
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update for windows build dll.
Diffstat (limited to 'win-build/Lua51/ldblib.c')
-rw-r--r--win-build/Lua51/ldblib.c398
1 files changed, 398 insertions, 0 deletions
diff --git a/win-build/Lua51/ldblib.c b/win-build/Lua51/ldblib.c
new file mode 100644
index 0000000..2027eda
--- /dev/null
+++ b/win-build/Lua51/ldblib.c
@@ -0,0 +1,398 @@
1/*
2** $Id: ldblib.c,v 1.104.1.4 2009/08/04 18:50:18 roberto Exp $
3** Interface from Lua to its debug API
4** See Copyright Notice in lua.h
5*/
6
7
8#include <stdio.h>
9#include <stdlib.h>
10#include <string.h>
11
12#define ldblib_c
13#define LUA_LIB
14
15#include "lua.h"
16
17#include "lauxlib.h"
18#include "lualib.h"
19
20
21
22static int db_getregistry (lua_State *L) {
23 lua_pushvalue(L, LUA_REGISTRYINDEX);
24 return 1;
25}
26
27
28static int db_getmetatable (lua_State *L) {
29 luaL_checkany(L, 1);
30 if (!lua_getmetatable(L, 1)) {
31 lua_pushnil(L); /* no metatable */
32 }
33 return 1;
34}
35
36
37static int db_setmetatable (lua_State *L) {
38 int t = lua_type(L, 2);
39 luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2,
40 "nil or table expected");
41 lua_settop(L, 2);
42 lua_pushboolean(L, lua_setmetatable(L, 1));
43 return 1;
44}
45
46
47static int db_getfenv (lua_State *L) {
48 luaL_checkany(L, 1);
49 lua_getfenv(L, 1);
50 return 1;
51}
52
53
54static int db_setfenv (lua_State *L) {
55 luaL_checktype(L, 2, LUA_TTABLE);
56 lua_settop(L, 2);
57 if (lua_setfenv(L, 1) == 0)
58 luaL_error(L, LUA_QL("setfenv")
59 " cannot change environment of given object");
60 return 1;
61}
62
63
64static void settabss (lua_State *L, const char *i, const char *v) {
65 lua_pushstring(L, v);
66 lua_setfield(L, -2, i);
67}
68
69
70static void settabsi (lua_State *L, const char *i, int v) {
71 lua_pushinteger(L, v);
72 lua_setfield(L, -2, i);
73}
74
75
76static lua_State *getthread (lua_State *L, int *arg) {
77 if (lua_isthread(L, 1)) {
78 *arg = 1;
79 return lua_tothread(L, 1);
80 }
81 else {
82 *arg = 0;
83 return L;
84 }
85}
86
87
88static void treatstackoption (lua_State *L, lua_State *L1, const char *fname) {
89 if (L == L1) {
90 lua_pushvalue(L, -2);
91 lua_remove(L, -3);
92 }
93 else
94 lua_xmove(L1, L, 1);
95 lua_setfield(L, -2, fname);
96}
97
98
99static int db_getinfo (lua_State *L) {
100 lua_Debug ar;
101 int arg;
102 lua_State *L1 = getthread(L, &arg);
103 const char *options = luaL_optstring(L, arg+2, "flnSu");
104 if (lua_isnumber(L, arg+1)) {
105 if (!lua_getstack(L1, (int)lua_tointeger(L, arg+1), &ar)) {
106 lua_pushnil(L); /* level out of range */
107 return 1;
108 }
109 }
110 else if (lua_isfunction(L, arg+1)) {
111 lua_pushfstring(L, ">%s", options);
112 options = lua_tostring(L, -1);
113 lua_pushvalue(L, arg+1);
114 lua_xmove(L, L1, 1);
115 }
116 else
117 return luaL_argerror(L, arg+1, "function or level expected");
118 if (!lua_getinfo(L1, options, &ar))
119 return luaL_argerror(L, arg+2, "invalid option");
120 lua_createtable(L, 0, 2);
121 if (strchr(options, 'S')) {
122 settabss(L, "source", ar.source);
123 settabss(L, "short_src", ar.short_src);
124 settabsi(L, "linedefined", ar.linedefined);
125 settabsi(L, "lastlinedefined", ar.lastlinedefined);
126 settabss(L, "what", ar.what);
127 }
128 if (strchr(options, 'l'))
129 settabsi(L, "currentline", ar.currentline);
130 if (strchr(options, 'u'))
131 settabsi(L, "nups", ar.nups);
132 if (strchr(options, 'n')) {
133 settabss(L, "name", ar.name);
134 settabss(L, "namewhat", ar.namewhat);
135 }
136 if (strchr(options, 'L'))
137 treatstackoption(L, L1, "activelines");
138 if (strchr(options, 'f'))
139 treatstackoption(L, L1, "func");
140 return 1; /* return table */
141}
142
143
144static int db_getlocal (lua_State *L) {
145 int arg;
146 lua_State *L1 = getthread(L, &arg);
147 lua_Debug ar;
148 const char *name;
149 if (!lua_getstack(L1, luaL_checkint(L, arg+1), &ar)) /* out of range? */
150 return luaL_argerror(L, arg+1, "level out of range");
151 name = lua_getlocal(L1, &ar, luaL_checkint(L, arg+2));
152 if (name) {
153 lua_xmove(L1, L, 1);
154 lua_pushstring(L, name);
155 lua_pushvalue(L, -2);
156 return 2;
157 }
158 else {
159 lua_pushnil(L);
160 return 1;
161 }
162}
163
164
165static int db_setlocal (lua_State *L) {
166 int arg;
167 lua_State *L1 = getthread(L, &arg);
168 lua_Debug ar;
169 if (!lua_getstack(L1, luaL_checkint(L, arg+1), &ar)) /* out of range? */
170 return luaL_argerror(L, arg+1, "level out of range");
171 luaL_checkany(L, arg+3);
172 lua_settop(L, arg+3);
173 lua_xmove(L, L1, 1);
174 lua_pushstring(L, lua_setlocal(L1, &ar, luaL_checkint(L, arg+2)));
175 return 1;
176}
177
178
179static int auxupvalue (lua_State *L, int get) {
180 const char *name;
181 int n = luaL_checkint(L, 2);
182 luaL_checktype(L, 1, LUA_TFUNCTION);
183 if (lua_iscfunction(L, 1)) return 0; /* cannot touch C upvalues from Lua */
184 name = get ? lua_getupvalue(L, 1, n) : lua_setupvalue(L, 1, n);
185 if (name == NULL) return 0;
186 lua_pushstring(L, name);
187 lua_insert(L, -(get+1));
188 return get + 1;
189}
190
191
192static int db_getupvalue (lua_State *L) {
193 return auxupvalue(L, 1);
194}
195
196
197static int db_setupvalue (lua_State *L) {
198 luaL_checkany(L, 3);
199 return auxupvalue(L, 0);
200}
201
202
203
204static const char KEY_HOOK = 'h';
205
206
207static void hookf (lua_State *L, lua_Debug *ar) {
208 static const char *const hooknames[] =
209 {"call", "return", "line", "count", "tail return"};
210 lua_pushlightuserdata(L, (void *)&KEY_HOOK);
211 lua_rawget(L, LUA_REGISTRYINDEX);
212 lua_pushlightuserdata(L, L);
213 lua_rawget(L, -2);
214 if (lua_isfunction(L, -1)) {
215 lua_pushstring(L, hooknames[(int)ar->event]);
216 if (ar->currentline >= 0)
217 lua_pushinteger(L, ar->currentline);
218 else lua_pushnil(L);
219 lua_assert(lua_getinfo(L, "lS", ar));
220 lua_call(L, 2, 0);
221 }
222}
223
224
225static int makemask (const char *smask, int count) {
226 int mask = 0;
227 if (strchr(smask, 'c')) mask |= LUA_MASKCALL;
228 if (strchr(smask, 'r')) mask |= LUA_MASKRET;
229 if (strchr(smask, 'l')) mask |= LUA_MASKLINE;
230 if (count > 0) mask |= LUA_MASKCOUNT;
231 return mask;
232}
233
234
235static char *unmakemask (int mask, char *smask) {
236 int i = 0;
237 if (mask & LUA_MASKCALL) smask[i++] = 'c';
238 if (mask & LUA_MASKRET) smask[i++] = 'r';
239 if (mask & LUA_MASKLINE) smask[i++] = 'l';
240 smask[i] = '\0';
241 return smask;
242}
243
244
245static void gethooktable (lua_State *L) {
246 lua_pushlightuserdata(L, (void *)&KEY_HOOK);
247 lua_rawget(L, LUA_REGISTRYINDEX);
248 if (!lua_istable(L, -1)) {
249 lua_pop(L, 1);
250 lua_createtable(L, 0, 1);
251 lua_pushlightuserdata(L, (void *)&KEY_HOOK);
252 lua_pushvalue(L, -2);
253 lua_rawset(L, LUA_REGISTRYINDEX);
254 }
255}
256
257
258static int db_sethook (lua_State *L) {
259 int arg, mask, count;
260 lua_Hook func;
261 lua_State *L1 = getthread(L, &arg);
262 if (lua_isnoneornil(L, arg+1)) {
263 lua_settop(L, arg+1);
264 func = NULL; mask = 0; count = 0; /* turn off hooks */
265 }
266 else {
267 const char *smask = luaL_checkstring(L, arg+2);
268 luaL_checktype(L, arg+1, LUA_TFUNCTION);
269 count = luaL_optint(L, arg+3, 0);
270 func = hookf; mask = makemask(smask, count);
271 }
272 gethooktable(L);
273 lua_pushlightuserdata(L, L1);
274 lua_pushvalue(L, arg+1);
275 lua_rawset(L, -3); /* set new hook */
276 lua_pop(L, 1); /* remove hook table */
277 lua_sethook(L1, func, mask, count); /* set hooks */
278 return 0;
279}
280
281
282static int db_gethook (lua_State *L) {
283 int arg;
284 lua_State *L1 = getthread(L, &arg);
285 char buff[5];
286 int mask = lua_gethookmask(L1);
287 lua_Hook hook = lua_gethook(L1);
288 if (hook != NULL && hook != hookf) /* external hook? */
289 lua_pushliteral(L, "external hook");
290 else {
291 gethooktable(L);
292 lua_pushlightuserdata(L, L1);
293 lua_rawget(L, -2); /* get hook */
294 lua_remove(L, -2); /* remove hook table */
295 }
296 lua_pushstring(L, unmakemask(mask, buff));
297 lua_pushinteger(L, lua_gethookcount(L1));
298 return 3;
299}
300
301
302static int db_debug (lua_State *L) {
303 for (;;) {
304 char buffer[250];
305 fputs("lua_debug> ", stderr);
306 if (fgets(buffer, sizeof(buffer), stdin) == 0 ||
307 strcmp(buffer, "cont\n") == 0)
308 return 0;
309 if (luaL_loadbuffer(L, buffer, strlen(buffer), "=(debug command)") ||
310 lua_pcall(L, 0, 0, 0)) {
311 fputs(lua_tostring(L, -1), stderr);
312 fputs("\n", stderr);
313 }
314 lua_settop(L, 0); /* remove eventual returns */
315 }
316}
317
318
319#define LEVELS1 12 /* size of the first part of the stack */
320#define LEVELS2 10 /* size of the second part of the stack */
321
322static int db_errorfb (lua_State *L) {
323 int level;
324 int firstpart = 1; /* still before eventual `...' */
325 int arg;
326 lua_State *L1 = getthread(L, &arg);
327 lua_Debug ar;
328 if (lua_isnumber(L, arg+2)) {
329 level = (int)lua_tointeger(L, arg+2);
330 lua_pop(L, 1);
331 }
332 else
333 level = (L == L1) ? 1 : 0; /* level 0 may be this own function */
334 if (lua_gettop(L) == arg)
335 lua_pushliteral(L, "");
336 else if (!lua_isstring(L, arg+1)) return 1; /* message is not a string */
337 else lua_pushliteral(L, "\n");
338 lua_pushliteral(L, "stack traceback:");
339 while (lua_getstack(L1, level++, &ar)) {
340 if (level > LEVELS1 && firstpart) {
341 /* no more than `LEVELS2' more levels? */
342 if (!lua_getstack(L1, level+LEVELS2, &ar))
343 level--; /* keep going */
344 else {
345 lua_pushliteral(L, "\n\t..."); /* too many levels */
346 while (lua_getstack(L1, level+LEVELS2, &ar)) /* find last levels */
347 level++;
348 }
349 firstpart = 0;
350 continue;
351 }
352 lua_pushliteral(L, "\n\t");
353 lua_getinfo(L1, "Snl", &ar);
354 lua_pushfstring(L, "%s:", ar.short_src);
355 if (ar.currentline > 0)
356 lua_pushfstring(L, "%d:", ar.currentline);
357 if (*ar.namewhat != '\0') /* is there a name? */
358 lua_pushfstring(L, " in function " LUA_QS, ar.name);
359 else {
360 if (*ar.what == 'm') /* main? */
361 lua_pushfstring(L, " in main chunk");
362 else if (*ar.what == 'C' || *ar.what == 't')
363 lua_pushliteral(L, " ?"); /* C function or tail call */
364 else
365 lua_pushfstring(L, " in function <%s:%d>",
366 ar.short_src, ar.linedefined);
367 }
368 lua_concat(L, lua_gettop(L) - arg);
369 }
370 lua_concat(L, lua_gettop(L) - arg);
371 return 1;
372}
373
374
375static const luaL_Reg dblib[] = {
376 {"debug", db_debug},
377 {"getfenv", db_getfenv},
378 {"gethook", db_gethook},
379 {"getinfo", db_getinfo},
380 {"getlocal", db_getlocal},
381 {"getregistry", db_getregistry},
382 {"getmetatable", db_getmetatable},
383 {"getupvalue", db_getupvalue},
384 {"setfenv", db_setfenv},
385 {"sethook", db_sethook},
386 {"setlocal", db_setlocal},
387 {"setmetatable", db_setmetatable},
388 {"setupvalue", db_setupvalue},
389 {"traceback", db_errorfb},
390 {NULL, NULL}
391};
392
393
394LUALIB_API int luaopen_debug (lua_State *L) {
395 luaL_register(L, LUA_DBLIBNAME, dblib);
396 return 1;
397}
398
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