mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-07-01 16:58:30 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Add Hello World example for LUA C API (#97)

Browse source
This commit is contained in:
Justine Tunney 2021-03-08 14:13:40 -08:00
parent 2a3037d4e8
commit 67c27d9e6e
7 changed files with 50 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

7
examples/examples.mk
View file

@ -69,6 +69,7 @@ EXAMPLES_DIRECTDEPS = \
THIRD_PARTY_DLMALLOC \
THIRD_PARTY_GDTOA \
THIRD_PARTY_GETOPT \
THIRD_PARTY_LUA \
THIRD_PARTY_MUSL \
THIRD_PARTY_STB \
THIRD_PARTY_XED \
@ -94,10 +95,10 @@ o/$(MODE)/examples/%.com.dbg: \
$(APE)
@$(APELINK)
o/$(MODE)/examples/hellojs.com.dbg: \
o/$(MODE)/examples/hellolua.com.dbg: \
$(EXAMPLES_DEPS) \
o/$(MODE)/examples/hellojs.o \
o/$(MODE)/examples/hello.js.zip.o \
o/$(MODE)/examples/hellolua.o \
o/$(MODE)/examples/hellolua.lua.zip.o \
o/$(MODE)/examples/examples.pkg \
$(CRT) \
$(APE)

30
examples/hellolua.c Normal file
View file

@ -0,0 +1,30 @@
#if 0
/*─────────────────────────────────────────────────────────────────╗
│ To the extent possible under law, Justine Tunney has waived │
│ all copyright and related or neighboring rights to this file, │
│ as it is written in the following disclaimers: │
│ • http://unlicense.org/ │
│ • http://creativecommons.org/publicdomain/zero/1.0/ │
╚─────────────────────────────────────────────────────────────────*/
#endif
#include "third_party/lua/lauxlib.h"
#include "third_party/lua/lualib.h"
int NativeAdd(lua_State *L) {
lua_Number x, y;
x = luaL_checknumber(L, 1);
y = luaL_checknumber(L, 2);
lua_pushnumber(L, x + y);
return 1; /* number of results */
}
int main(int argc, char *argv[]) {
lua_State *L;
L = luaL_newstate();
luaL_openlibs(L);
lua_pushcfunction(L, NativeAdd);
lua_setglobal(L, "NativeAdd");
luaL_dofile(L, "zip:examples/hellolua.lua");
lua_close(L);
return 0;
}

1
examples/hellolua.lua Normal file
View file

@ -0,0 +1 @@
print(string.format("2 + 3 = %g", NativeAdd(2, 3)))