| rev |
line source |
|
jbe@0
|
1 #include <lua.h>
|
|
jbe@0
|
2 #include <lauxlib.h>
|
|
jbe@25
|
3 #include "seqlualib.h"
|
|
jbe@8
|
4
|
|
jbe@0
|
5 static int seqlua_ipairsaux_raw(lua_State *L) {
|
|
jbe@0
|
6 lua_Integer i;
|
|
jbe@0
|
7 luaL_checktype(L, 1, LUA_TTABLE);
|
|
jbe@0
|
8 i = luaL_checkinteger(L, 2) + 1;
|
|
jbe@0
|
9 lua_pushinteger(L, i);
|
|
jbe@0
|
10 lua_rawgeti(L, 1, i); // TODO: Lua 5.3 returns type
|
|
jbe@0
|
11 return lua_isnil(L, -1) ? 1 : 2;
|
|
jbe@0
|
12 }
|
|
jbe@0
|
13
|
|
jbe@0
|
14 static int seqlua_ipairsaux_meta(lua_State *L) {
|
|
jbe@0
|
15 lua_Integer i;
|
|
jbe@0
|
16 i = luaL_checkinteger(L, 2) + 1;
|
|
jbe@0
|
17 lua_pushinteger(L, i);
|
|
jbe@0
|
18 lua_pushinteger(L, i);
|
|
jbe@0
|
19 lua_gettable(L, 1); // TODO: Lua 5.3 returns type
|
|
jbe@0
|
20 return lua_isnil(L, -1) ? 1 : 2;
|
|
jbe@0
|
21 }
|
|
jbe@0
|
22
|
|
jbe@0
|
23 static int seqlua_ipairsaux_func(lua_State *L) {
|
|
jbe@0
|
24 lua_pushinteger(L, luaL_checkinteger(L, 2) + 1);
|
|
jbe@0
|
25 lua_insert(L, 1);
|
|
jbe@0
|
26 lua_settop(L, 2);
|
|
jbe@0
|
27 lua_call(L, 0, LUA_MULTRET);
|
|
jbe@0
|
28 if (lua_isnoneornil(L, 2)) {
|
|
jbe@0
|
29 lua_settop(L, 0);
|
|
jbe@0
|
30 lua_pushnil(L);
|
|
jbe@0
|
31 return 1;
|
|
jbe@0
|
32 } else {
|
|
jbe@0
|
33 return lua_gettop(L);
|
|
jbe@0
|
34 }
|
|
jbe@0
|
35 }
|
|
jbe@0
|
36
|
|
jbe@0
|
37 static int seqlua_ipairs(lua_State *L) {
|
|
jbe@8
|
38 luaL_checkany(L, 1); // provides better error message
|
|
jbe@23
|
39 if (
|
|
jbe@23
|
40 lua_type(L, 1) == LUA_TFUNCTION ||
|
|
jbe@23
|
41 (luaL_getmetafield(L, 1, "__call") && (lua_pop(L, 1), 1))
|
|
jbe@23
|
42 ) {
|
|
jbe@0
|
43 lua_pushcfunction(L, seqlua_ipairsaux_func);
|
|
jbe@0
|
44 } else if (luaL_getmetafield(L, 1, "__index")) {
|
|
jbe@0
|
45 lua_pushcfunction(L, seqlua_ipairsaux_meta);
|
|
jbe@0
|
46 } else {
|
|
jbe@0
|
47 luaL_checktype(L, 1, LUA_TTABLE);
|
|
jbe@0
|
48 lua_pushcfunction(L, seqlua_ipairsaux_raw);
|
|
jbe@0
|
49 }
|
|
jbe@0
|
50 lua_pushvalue(L, 1);
|
|
jbe@0
|
51 lua_pushinteger(L, 0);
|
|
jbe@0
|
52 return 3;
|
|
jbe@0
|
53 }
|
|
jbe@0
|
54
|
|
jbe@25
|
55 static int seqlua_concat(lua_State *L) {
|
|
jbe@25
|
56 const char *sep;
|
|
jbe@25
|
57 size_t seplen;
|
|
jbe@25
|
58 luaL_Buffer buf;
|
|
jbe@25
|
59 seqlua_Iterator iter;
|
|
jbe@25
|
60 sep = luaL_checklstring(L, 1, &seplen);
|
|
jbe@25
|
61 luaL_checkany(L, 2);
|
|
jbe@25
|
62 lua_settop(L, 3);
|
|
jbe@25
|
63 luaL_buffinit(L, &buf);
|
|
jbe@25
|
64 seqlua_iterloop(L, &iter, 2) {
|
|
jbe@25
|
65 lua_replace(L, 3);
|
|
jbe@25
|
66 if (seqlua_itercount(&iter) > 1) luaL_addlstring(&buf, sep, seplen);
|
|
jbe@25
|
67 luaL_tolstring(L, 3, NULL);
|
|
jbe@25
|
68 luaL_addvalue(&buf);
|
|
jbe@25
|
69 }
|
|
jbe@25
|
70 luaL_pushresult(&buf);
|
|
jbe@25
|
71 return 1;
|
|
jbe@25
|
72 }
|
|
jbe@25
|
73
|
|
jbe@0
|
74 int luaopen_seqlua(lua_State *L) {
|
|
jbe@0
|
75 lua_pushcfunction(L, seqlua_ipairs);
|
|
jbe@0
|
76 lua_setglobal(L, "ipairs");
|
|
jbe@25
|
77 lua_getglobal(L, "string");
|
|
jbe@25
|
78 lua_pushcfunction(L, seqlua_concat);
|
|
jbe@25
|
79 lua_setfield(L, -2, "concat");
|
|
jbe@25
|
80 return 0;
|
|
jbe@0
|
81 }
|