Mercurial > pub > dyncall > bindings
diff lua/test/luadc.c @ 0:0cfcc391201f
initial from svn dyncall-1745
author | Daniel Adler |
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date | Thu, 19 Mar 2015 22:26:28 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lua/test/luadc.c Thu Mar 19 22:26:28 2015 +0100 @@ -0,0 +1,146 @@ +#include <lua.h> +#include <lauxlib.h> +#include <dyncall.h> +#include <dyncall_signature.h> +#include <dynload.h> + +#define LUA_DCLIBNAME "dc" + +DCCallVM* g_pCallVM; + +int luaDC_load(lua_State* L) +{ + void* handle; + if (lua_gettop(L) != 1) return luaL_error(L,"wrong number of arguments"); + handle = dlLoadLibrary( lua_tostring(L,1) ); + if (!handle) return luaL_error(L,"library not found"); + lua_pushlightuserdata(L, handle); + return 1; +} + +int luaDC_find(lua_State* L) +{ + void* h; + const char* s; + void* f; + if (lua_gettop(L) != 2) return luaL_error(L,"wrong number of arguments"); + h = lua_touserdata(L, 1); + s = lua_tostring(L, 2); + f = dlFindSymbol(h, s); + if (!f) return luaL_error(L,"symbol not found"); + lua_pushlightuserdata(L, f); + return 1; +} + +int luaDC_call(lua_State* L) +{ + void* f; + const char* s; + if (lua_gettop(L) < 2) return luaL_error(L,"missing arguments"); + + if ( lua_iscfunction(L,1) ) + f = (void*) lua_tocfunction(L,1); + else if (lua_islightuserdata(L,1) ) + f = lua_touserdata(L, 1); + else + return luaL_error(L,"argument #1 mismatch: expected userdata"); + + s = lua_tostring(L,2); + + dcMode( g_pCallVM, DC_CALL_C_DEFAULT ); + dcReset( g_pCallVM ); + + char ch; + int p = 3; + while ( (ch = *s++) != DC_SIGCHAR_ENDARG) + { + switch(ch) + { + case DC_SIGCHAR_BOOL: + dcArgBool(g_pCallVM, (DCbool) lua_toboolean(L, p) ); + break; + case DC_SIGCHAR_CHAR: + dcArgChar(g_pCallVM, (DCchar) lua_tonumber(L, p) ); + break; + case DC_SIGCHAR_SHORT: + dcArgShort(g_pCallVM, (DCshort) lua_tonumber(L, p) ); + break; + case DC_SIGCHAR_INT: + dcArgInt(g_pCallVM, (DCint) lua_tonumber(L, p) ); + break; + case DC_SIGCHAR_LONG: + dcArgLong(g_pCallVM, (DClong) lua_tonumber(L, p) ); + break; + case DC_SIGCHAR_LONGLONG: + dcArgLongLong(g_pCallVM, (DClonglong) lua_tonumber(L, p) ); + break; + case DC_SIGCHAR_FLOAT: + dcArgFloat(g_pCallVM, (DCfloat) lua_tonumber(L, p) ); + break; + case DC_SIGCHAR_DOUBLE: + dcArgDouble(g_pCallVM, (DCdouble) lua_tonumber(L, p) ); + break; + case DC_SIGCHAR_POINTER: + dcArgPointer(g_pCallVM, (DCpointer) lua_topointer(L, p) ); + break; + case DC_SIGCHAR_STRING: + dcArgPointer(g_pCallVM, (DCpointer) lua_tostring(L, p) ); + break; + } + ++p; + } + + switch(*s) + { + case DC_SIGCHAR_VOID: + dcCallVoid(g_pCallVM, f); + return 0; + case DC_SIGCHAR_BOOL: + lua_pushboolean( L, (int) dcCallBool(g_pCallVM, f) ); + break; + case DC_SIGCHAR_CHAR: + lua_pushnumber( L, (lua_Number) ( dcCallChar(g_pCallVM,f) ) ); + break; + case DC_SIGCHAR_SHORT: + lua_pushnumber( L, (lua_Number)( dcCallShort(g_pCallVM, f) ) ); + break; + case DC_SIGCHAR_INT: + lua_pushnumber( L, (lua_Number)( dcCallInt(g_pCallVM, f) ) ); + break; + case DC_SIGCHAR_LONG: + lua_pushnumber( L, (lua_Number)( dcCallLong(g_pCallVM, f) ) ); + break; + case DC_SIGCHAR_LONGLONG: + lua_pushnumber( L, (lua_Number)( dcCallLongLong(g_pCallVM, f) ) ); + break; + case DC_SIGCHAR_FLOAT: + lua_pushnumber( L, (lua_Number) dcCallFloat(g_pCallVM, f) ); + break; + case DC_SIGCHAR_DOUBLE: + lua_pushnumber( L, (lua_Number) dcCallDouble(g_pCallVM, f) ); + break; + case DC_SIGCHAR_STRING: + lua_pushstring( L, (const char*) dcCallPointer(g_pCallVM, f) ); + break; + case DC_SIGCHAR_POINTER: + lua_pushlightuserdata( L, dcCallPointer(g_pCallVM, f) ); + break; + } + return 1; +} + +static const luaL_Reg dclib[] = +{ + {"load", luaDC_load}, + {"find", luaDC_find}, + {"call", luaDC_call}, + {NULL,NULL} +}; + +LUA_API int luadc_open (lua_State* L) +{ + g_pCallVM = dcNewCallVM(256); + luaL_register(L, LUA_DCLIBNAME, dclib); + return 1; +} +