Mercurial > vim
view src/if_lua.c @ 27414:b2d0357fec12 v8.2.4235
patch 8.2.4235: invalid check for NULL pointer
Commit: https://github.com/vim/vim/commit/37cf413e3e768b76c975e4a7081472d75d649c72
Author: Bram Moolenaar <Bram@vim.org>
Date: Thu Jan 27 20:47:03 2022 +0000
patch 8.2.4235: invalid check for NULL pointer
Problem: Invalid check for NULL pointer.
Solution: Remove the check.
author | Bram Moolenaar <Bram@vim.org> |
---|---|
date | Thu, 27 Jan 2022 22:00:04 +0100 |
parents | 06a137af96f8 |
children | d0241e74bfdb |
line wrap: on
line source
/* vi:set ts=8 sts=4 sw=4 noet: * * VIM - Vi IMproved by Bram Moolenaar * * Lua interface by Luis Carvalho * * Do ":help uganda" in Vim to read copying and usage conditions. * Do ":help credits" in Vim to see a list of people who contributed. * See README.txt for an overview of the Vim source code. */ #include "vim.h" #include "version.h" #include <lua.h> #include <lualib.h> #include <lauxlib.h> // Only do the following when the feature is enabled. Needed for "make // depend". #if defined(FEAT_LUA) || defined(PROTO) #define LUAVIM_CHUNKNAME "vim chunk" #define LUAVIM_NAME "vim" #define LUAVIM_EVALNAME "luaeval" #define LUAVIM_EVALHEADER "local _A=select(1,...) return " #ifdef LUA_RELEASE # define LUAVIM_VERSION LUA_RELEASE #else # define LUAVIM_VERSION LUA_VERSION #endif typedef buf_T *luaV_Buffer; typedef win_T *luaV_Window; typedef dict_T *luaV_Dict; typedef list_T *luaV_List; typedef blob_T *luaV_Blob; typedef struct { char_u *name; // funcref dict_T *self; // selfdict } luaV_Funcref; typedef int (*msgfunc_T)(char *); typedef struct { int lua_funcref; // ref to a lua func int lua_tableref; // ref to a lua table if metatable else LUA_NOREF. used // for __call lua_State *L; } luaV_CFuncState; static const char LUAVIM_DICT[] = "dict"; static const char LUAVIM_LIST[] = "list"; static const char LUAVIM_BLOB[] = "blob"; static const char LUAVIM_FUNCREF[] = "funcref"; static const char LUAVIM_BUFFER[] = "buffer"; static const char LUAVIM_WINDOW[] = "window"; static const char LUAVIM_FREE[] = "luaV_free"; static const char LUAVIM_LUAEVAL[] = "luaV_luaeval"; static const char LUAVIM_SETREF[] = "luaV_setref"; static const char LUA___CALL[] = "__call"; // most functions are closures with a cache table as first upvalue; // get/setudata manage references to vim userdata in cache table through // object pointers (light userdata) #define luaV_getudata(L, v) \ lua_pushlightuserdata((L), (void *) (v)); \ lua_rawget((L), lua_upvalueindex(1)) #define luaV_setudata(L, v) \ lua_pushlightuserdata((L), (void *) (v)); \ lua_pushvalue((L), -2); \ lua_rawset((L), lua_upvalueindex(1)) #define luaV_getfield(L, s) \ lua_pushlightuserdata((L), (void *)(s)); \ lua_rawget((L), LUA_REGISTRYINDEX) #define luaV_checksandbox(L) \ if (sandbox) luaL_error((L), "not allowed in sandbox") #define luaV_msg(L) luaV_msgfunc((L), (msgfunc_T) msg) #define luaV_emsg(L) luaV_msgfunc((L), (msgfunc_T) emsg) #define luaV_checktypval(L, a, v, msg) \ do { \ if (luaV_totypval(L, a, v) == FAIL) \ luaL_error(L, msg ": cannot convert value"); \ } while (0) static luaV_List *luaV_pushlist(lua_State *L, list_T *lis); static luaV_Dict *luaV_pushdict(lua_State *L, dict_T *dic); static luaV_Blob *luaV_pushblob(lua_State *L, blob_T *blo); static luaV_Funcref *luaV_pushfuncref(lua_State *L, char_u *name); static int luaV_call_lua_func(int argcount, typval_T *argvars, typval_T *rettv, void *state); static void luaV_call_lua_func_free(void *state); #if LUA_VERSION_NUM <= 501 #define luaV_openlib(L, l, n) luaL_openlib(L, NULL, l, n) #define luaL_typeerror luaL_typerror #else #define luaV_openlib luaL_setfuncs #endif #ifdef DYNAMIC_LUA #ifndef MSWIN # include <dlfcn.h> # define HANDLE void* # define load_dll(n) dlopen((n), RTLD_LAZY|RTLD_GLOBAL) # define symbol_from_dll dlsym # define close_dll dlclose # define load_dll_error dlerror #else # define load_dll vimLoadLib # define symbol_from_dll GetProcAddress # define close_dll FreeLibrary # define load_dll_error GetWin32Error #endif // lauxlib #if LUA_VERSION_NUM <= 501 #define luaL_register dll_luaL_register #define luaL_prepbuffer dll_luaL_prepbuffer #define luaL_openlib dll_luaL_openlib #define luaL_typerror dll_luaL_typerror #define luaL_loadfile dll_luaL_loadfile #define luaL_loadbuffer dll_luaL_loadbuffer #else #define luaL_prepbuffsize dll_luaL_prepbuffsize #define luaL_setfuncs dll_luaL_setfuncs #define luaL_loadfilex dll_luaL_loadfilex #define luaL_loadbufferx dll_luaL_loadbufferx #define luaL_argerror dll_luaL_argerror #endif #if LUA_VERSION_NUM >= 504 #define luaL_typeerror dll_luaL_typeerror #endif #define luaL_checkany dll_luaL_checkany #define luaL_checklstring dll_luaL_checklstring #define luaL_checkinteger dll_luaL_checkinteger #define luaL_optinteger dll_luaL_optinteger #define luaL_checktype dll_luaL_checktype #define luaL_error dll_luaL_error #define luaL_newstate dll_luaL_newstate #define luaL_buffinit dll_luaL_buffinit #define luaL_addlstring dll_luaL_addlstring #define luaL_pushresult dll_luaL_pushresult #define luaL_loadstring dll_luaL_loadstring #define luaL_ref dll_luaL_ref #define luaL_unref dll_luaL_unref // lua #if LUA_VERSION_NUM <= 501 #define lua_tonumber dll_lua_tonumber #define lua_tointeger dll_lua_tointeger #define lua_call dll_lua_call #define lua_pcall dll_lua_pcall #else #define lua_tonumberx dll_lua_tonumberx #define lua_tointegerx dll_lua_tointegerx #define lua_callk dll_lua_callk #define lua_pcallk dll_lua_pcallk #define lua_getglobal dll_lua_getglobal #define lua_setglobal dll_lua_setglobal #endif #if LUA_VERSION_NUM <= 502 #define lua_replace dll_lua_replace #define lua_remove dll_lua_remove #endif #if LUA_VERSION_NUM >= 503 #define lua_rotate dll_lua_rotate #define lua_copy dll_lua_copy #endif #define lua_typename dll_lua_typename #define lua_close dll_lua_close #define lua_gettop dll_lua_gettop #define lua_settop dll_lua_settop #define lua_pushvalue dll_lua_pushvalue #define lua_isnumber dll_lua_isnumber #define lua_isstring dll_lua_isstring #define lua_type dll_lua_type #define lua_rawequal dll_lua_rawequal #define lua_toboolean dll_lua_toboolean #define lua_tolstring dll_lua_tolstring #define lua_touserdata dll_lua_touserdata #define lua_pushnil dll_lua_pushnil #define lua_pushnumber dll_lua_pushnumber #define lua_pushinteger dll_lua_pushinteger #define lua_pushlstring dll_lua_pushlstring #define lua_pushstring dll_lua_pushstring #define lua_pushfstring dll_lua_pushfstring #define lua_pushcclosure dll_lua_pushcclosure #define lua_pushboolean dll_lua_pushboolean #define lua_pushlightuserdata dll_lua_pushlightuserdata #define lua_getfield dll_lua_getfield #define lua_rawget dll_lua_rawget #define lua_rawgeti dll_lua_rawgeti #define lua_createtable dll_lua_createtable #define lua_settable dll_lua_settable #if LUA_VERSION_NUM >= 504 #define lua_newuserdatauv dll_lua_newuserdatauv #else #define lua_newuserdata dll_lua_newuserdata #endif #define lua_getmetatable dll_lua_getmetatable #define lua_setfield dll_lua_setfield #define lua_rawset dll_lua_rawset #define lua_rawseti dll_lua_rawseti #define lua_setmetatable dll_lua_setmetatable #define lua_next dll_lua_next // libs #define luaopen_base dll_luaopen_base #define luaopen_table dll_luaopen_table #define luaopen_string dll_luaopen_string #define luaopen_math dll_luaopen_math #define luaopen_io dll_luaopen_io #define luaopen_os dll_luaopen_os #define luaopen_package dll_luaopen_package #define luaopen_debug dll_luaopen_debug #define luaL_openlibs dll_luaL_openlibs // lauxlib #if LUA_VERSION_NUM <= 501 void (*dll_luaL_register) (lua_State *L, const char *libname, const luaL_Reg *l); char *(*dll_luaL_prepbuffer) (luaL_Buffer *B); void (*dll_luaL_openlib) (lua_State *L, const char *libname, const luaL_Reg *l, int nup); int (*dll_luaL_typerror) (lua_State *L, int narg, const char *tname); int (*dll_luaL_loadfile) (lua_State *L, const char *filename); int (*dll_luaL_loadbuffer) (lua_State *L, const char *buff, size_t sz, const char *name); #else char *(*dll_luaL_prepbuffsize) (luaL_Buffer *B, size_t sz); void (*dll_luaL_setfuncs) (lua_State *L, const luaL_Reg *l, int nup); int (*dll_luaL_loadfilex) (lua_State *L, const char *filename, const char *mode); int (*dll_luaL_loadbufferx) (lua_State *L, const char *buff, size_t sz, const char *name, const char *mode); int (*dll_luaL_argerror) (lua_State *L, int numarg, const char *extramsg); #endif #if LUA_VERSION_NUM >= 504 int (*dll_luaL_typeerror) (lua_State *L, int narg, const char *tname); #endif void (*dll_luaL_checkany) (lua_State *L, int narg); const char *(*dll_luaL_checklstring) (lua_State *L, int numArg, size_t *l); lua_Integer (*dll_luaL_checkinteger) (lua_State *L, int numArg); lua_Integer (*dll_luaL_optinteger) (lua_State *L, int nArg, lua_Integer def); void (*dll_luaL_checktype) (lua_State *L, int narg, int t); int (*dll_luaL_error) (lua_State *L, const char *fmt, ...); lua_State *(*dll_luaL_newstate) (void); void (*dll_luaL_buffinit) (lua_State *L, luaL_Buffer *B); void (*dll_luaL_addlstring) (luaL_Buffer *B, const char *s, size_t l); void (*dll_luaL_pushresult) (luaL_Buffer *B); int (*dll_luaL_loadstring) (lua_State *L, const char *s); int (*dll_luaL_ref) (lua_State *L, int idx); #if LUA_VERSION_NUM <= 502 void (*dll_luaL_unref) (lua_State *L, int idx, int n); #else void (*dll_luaL_unref) (lua_State *L, int idx, lua_Integer n); #endif // lua #if LUA_VERSION_NUM <= 501 lua_Number (*dll_lua_tonumber) (lua_State *L, int idx); lua_Integer (*dll_lua_tointeger) (lua_State *L, int idx); void (*dll_lua_call) (lua_State *L, int nargs, int nresults); int (*dll_lua_pcall) (lua_State *L, int nargs, int nresults, int errfunc); #else lua_Number (*dll_lua_tonumberx) (lua_State *L, int idx, int *isnum); lua_Integer (*dll_lua_tointegerx) (lua_State *L, int idx, int *isnum); void (*dll_lua_callk) (lua_State *L, int nargs, int nresults, int ctx, lua_CFunction k); int (*dll_lua_pcallk) (lua_State *L, int nargs, int nresults, int errfunc, int ctx, lua_CFunction k); void (*dll_lua_getglobal) (lua_State *L, const char *var); void (*dll_lua_setglobal) (lua_State *L, const char *var); #endif #if LUA_VERSION_NUM <= 502 void (*dll_lua_replace) (lua_State *L, int idx); void (*dll_lua_remove) (lua_State *L, int idx); #endif #if LUA_VERSION_NUM >= 503 void (*dll_lua_rotate) (lua_State *L, int idx, int n); void (*dll_lua_copy) (lua_State *L, int fromidx, int toidx); #endif const char *(*dll_lua_typename) (lua_State *L, int tp); void (*dll_lua_close) (lua_State *L); int (*dll_lua_gettop) (lua_State *L); void (*dll_lua_settop) (lua_State *L, int idx); void (*dll_lua_pushvalue) (lua_State *L, int idx); int (*dll_lua_isnumber) (lua_State *L, int idx); int (*dll_lua_isstring) (lua_State *L, int idx); int (*dll_lua_type) (lua_State *L, int idx); int (*dll_lua_rawequal) (lua_State *L, int idx1, int idx2); int (*dll_lua_toboolean) (lua_State *L, int idx); const char *(*dll_lua_tolstring) (lua_State *L, int idx, size_t *len); void *(*dll_lua_touserdata) (lua_State *L, int idx); void (*dll_lua_pushnil) (lua_State *L); void (*dll_lua_pushnumber) (lua_State *L, lua_Number n); void (*dll_lua_pushinteger) (lua_State *L, lua_Integer n); void (*dll_lua_pushlstring) (lua_State *L, const char *s, size_t l); void (*dll_lua_pushstring) (lua_State *L, const char *s); const char *(*dll_lua_pushfstring) (lua_State *L, const char *fmt, ...); void (*dll_lua_pushcclosure) (lua_State *L, lua_CFunction fn, int n); void (*dll_lua_pushboolean) (lua_State *L, int b); void (*dll_lua_pushlightuserdata) (lua_State *L, void *p); void (*dll_lua_getfield) (lua_State *L, int idx, const char *k); #if LUA_VERSION_NUM <= 502 void (*dll_lua_rawget) (lua_State *L, int idx); void (*dll_lua_rawgeti) (lua_State *L, int idx, int n); #else int (*dll_lua_rawget) (lua_State *L, int idx); int (*dll_lua_rawgeti) (lua_State *L, int idx, lua_Integer n); #endif void (*dll_lua_createtable) (lua_State *L, int narr, int nrec); void (*dll_lua_settable) (lua_State *L, int idx); #if LUA_VERSION_NUM >= 504 void *(*dll_lua_newuserdatauv) (lua_State *L, size_t sz, int nuvalue); #else void *(*dll_lua_newuserdata) (lua_State *L, size_t sz); #endif int (*dll_lua_getmetatable) (lua_State *L, int objindex); void (*dll_lua_setfield) (lua_State *L, int idx, const char *k); void (*dll_lua_rawset) (lua_State *L, int idx); #if LUA_VERSION_NUM <= 502 void (*dll_lua_rawseti) (lua_State *L, int idx, int n); #else void (*dll_lua_rawseti) (lua_State *L, int idx, lua_Integer n); #endif int (*dll_lua_setmetatable) (lua_State *L, int objindex); int (*dll_lua_next) (lua_State *L, int idx); // libs int (*dll_luaopen_base) (lua_State *L); int (*dll_luaopen_table) (lua_State *L); int (*dll_luaopen_string) (lua_State *L); int (*dll_luaopen_math) (lua_State *L); int (*dll_luaopen_io) (lua_State *L); int (*dll_luaopen_os) (lua_State *L); int (*dll_luaopen_package) (lua_State *L); int (*dll_luaopen_debug) (lua_State *L); void (*dll_luaL_openlibs) (lua_State *L); typedef void **luaV_function; typedef struct { const char *name; luaV_function func; } luaV_Reg; static const luaV_Reg luaV_dll[] = { // lauxlib #if LUA_VERSION_NUM <= 501 {"luaL_register", (luaV_function) &dll_luaL_register}, {"luaL_prepbuffer", (luaV_function) &dll_luaL_prepbuffer}, {"luaL_openlib", (luaV_function) &dll_luaL_openlib}, {"luaL_typerror", (luaV_function) &dll_luaL_typerror}, {"luaL_loadfile", (luaV_function) &dll_luaL_loadfile}, {"luaL_loadbuffer", (luaV_function) &dll_luaL_loadbuffer}, #else {"luaL_prepbuffsize", (luaV_function) &dll_luaL_prepbuffsize}, {"luaL_setfuncs", (luaV_function) &dll_luaL_setfuncs}, {"luaL_loadfilex", (luaV_function) &dll_luaL_loadfilex}, {"luaL_loadbufferx", (luaV_function) &dll_luaL_loadbufferx}, {"luaL_argerror", (luaV_function) &dll_luaL_argerror}, #endif #if LUA_VERSION_NUM >= 504 {"luaL_typeerror", (luaV_function) &dll_luaL_typeerror}, #endif {"luaL_checkany", (luaV_function) &dll_luaL_checkany}, {"luaL_checklstring", (luaV_function) &dll_luaL_checklstring}, {"luaL_checkinteger", (luaV_function) &dll_luaL_checkinteger}, {"luaL_optinteger", (luaV_function) &dll_luaL_optinteger}, {"luaL_checktype", (luaV_function) &dll_luaL_checktype}, {"luaL_error", (luaV_function) &dll_luaL_error}, {"luaL_newstate", (luaV_function) &dll_luaL_newstate}, {"luaL_buffinit", (luaV_function) &dll_luaL_buffinit}, {"luaL_addlstring", (luaV_function) &dll_luaL_addlstring}, {"luaL_pushresult", (luaV_function) &dll_luaL_pushresult}, {"luaL_loadstring", (luaV_function) &dll_luaL_loadstring}, {"luaL_ref", (luaV_function) &dll_luaL_ref}, {"luaL_unref", (luaV_function) &dll_luaL_unref}, // lua #if LUA_VERSION_NUM <= 501 {"lua_tonumber", (luaV_function) &dll_lua_tonumber}, {"lua_tointeger", (luaV_function) &dll_lua_tointeger}, {"lua_call", (luaV_function) &dll_lua_call}, {"lua_pcall", (luaV_function) &dll_lua_pcall}, #else {"lua_tonumberx", (luaV_function) &dll_lua_tonumberx}, {"lua_tointegerx", (luaV_function) &dll_lua_tointegerx}, {"lua_callk", (luaV_function) &dll_lua_callk}, {"lua_pcallk", (luaV_function) &dll_lua_pcallk}, {"lua_getglobal", (luaV_function) &dll_lua_getglobal}, {"lua_setglobal", (luaV_function) &dll_lua_setglobal}, #endif #if LUA_VERSION_NUM <= 502 {"lua_replace", (luaV_function) &dll_lua_replace}, {"lua_remove", (luaV_function) &dll_lua_remove}, #endif #if LUA_VERSION_NUM >= 503 {"lua_rotate", (luaV_function) &dll_lua_rotate}, {"lua_copy", (luaV_function) &dll_lua_copy}, #endif {"lua_typename", (luaV_function) &dll_lua_typename}, {"lua_close", (luaV_function) &dll_lua_close}, {"lua_gettop", (luaV_function) &dll_lua_gettop}, {"lua_settop", (luaV_function) &dll_lua_settop}, {"lua_pushvalue", (luaV_function) &dll_lua_pushvalue}, {"lua_isnumber", (luaV_function) &dll_lua_isnumber}, {"lua_isstring", (luaV_function) &dll_lua_isstring}, {"lua_type", (luaV_function) &dll_lua_type}, {"lua_rawequal", (luaV_function) &dll_lua_rawequal}, {"lua_toboolean", (luaV_function) &dll_lua_toboolean}, {"lua_tolstring", (luaV_function) &dll_lua_tolstring}, {"lua_touserdata", (luaV_function) &dll_lua_touserdata}, {"lua_pushnil", (luaV_function) &dll_lua_pushnil}, {"lua_pushnumber", (luaV_function) &dll_lua_pushnumber}, {"lua_pushinteger", (luaV_function) &dll_lua_pushinteger}, {"lua_pushlstring", (luaV_function) &dll_lua_pushlstring}, {"lua_pushstring", (luaV_function) &dll_lua_pushstring}, {"lua_pushfstring", (luaV_function) &dll_lua_pushfstring}, {"lua_pushcclosure", (luaV_function) &dll_lua_pushcclosure}, {"lua_pushboolean", (luaV_function) &dll_lua_pushboolean}, {"lua_pushlightuserdata", (luaV_function) &dll_lua_pushlightuserdata}, {"lua_getfield", (luaV_function) &dll_lua_getfield}, {"lua_rawget", (luaV_function) &dll_lua_rawget}, {"lua_rawgeti", (luaV_function) &dll_lua_rawgeti}, {"lua_createtable", (luaV_function) &dll_lua_createtable}, {"lua_settable", (luaV_function) &dll_lua_settable}, #if LUA_VERSION_NUM >= 504 {"lua_newuserdatauv", (luaV_function) &dll_lua_newuserdatauv}, #else {"lua_newuserdata", (luaV_function) &dll_lua_newuserdata}, #endif {"lua_getmetatable", (luaV_function) &dll_lua_getmetatable}, {"lua_setfield", (luaV_function) &dll_lua_setfield}, {"lua_rawset", (luaV_function) &dll_lua_rawset}, {"lua_rawseti", (luaV_function) &dll_lua_rawseti}, {"lua_setmetatable", (luaV_function) &dll_lua_setmetatable}, {"lua_next", (luaV_function) &dll_lua_next}, // libs {"luaopen_base", (luaV_function) &dll_luaopen_base}, {"luaopen_table", (luaV_function) &dll_luaopen_table}, {"luaopen_string", (luaV_function) &dll_luaopen_string}, {"luaopen_math", (luaV_function) &dll_luaopen_math}, {"luaopen_io", (luaV_function) &dll_luaopen_io}, {"luaopen_os", (luaV_function) &dll_luaopen_os}, {"luaopen_package", (luaV_function) &dll_luaopen_package}, {"luaopen_debug", (luaV_function) &dll_luaopen_debug}, {"luaL_openlibs", (luaV_function) &dll_luaL_openlibs}, {NULL, NULL} }; static HANDLE hinstLua = NULL; static int lua_link_init(char *libname, int verbose) { const luaV_Reg *reg; if (hinstLua) return OK; hinstLua = load_dll(libname); if (!hinstLua) { if (verbose) semsg(_(e_could_not_load_library_str_str), libname, load_dll_error()); return FAIL; } for (reg = luaV_dll; reg->func; reg++) { if ((*reg->func = symbol_from_dll(hinstLua, reg->name)) == NULL) { close_dll(hinstLua); hinstLua = 0; if (verbose) semsg(_(e_could_not_load_library_function_str), reg->name); return FAIL; } } return OK; } #endif // DYNAMIC_LUA #if defined(DYNAMIC_LUA) || defined(PROTO) int lua_enabled(int verbose) { return lua_link_init((char *)p_luadll, verbose) == OK; } #endif #if LUA_VERSION_NUM > 501 && LUA_VERSION_NUM < 504 static int luaL_typeerror(lua_State *L, int narg, const char *tname) { const char *msg = lua_pushfstring(L, "%s expected, got %s", tname, luaL_typename(L, narg)); return luaL_argerror(L, narg, msg); } #endif // ======= Internal ======= static void luaV_newmetatable(lua_State *L, const char *tname) { lua_newtable(L); lua_pushlightuserdata(L, (void *) tname); lua_pushvalue(L, -2); lua_rawset(L, LUA_REGISTRYINDEX); } static void * luaV_toudata(lua_State *L, int ud, const char *tname) { void *p = lua_touserdata(L, ud); if (p != NULL) // value is userdata? { if (lua_getmetatable(L, ud)) // does it have a metatable? { luaV_getfield(L, tname); // get metatable if (lua_rawequal(L, -1, -2)) // MTs match? { lua_pop(L, 2); // MTs return p; } } } return NULL; } static void * luaV_checkcache(lua_State *L, void *p) { luaV_getudata(L, p); if (lua_isnil(L, -1)) luaL_error(L, "invalid object"); lua_pop(L, 1); return p; } #define luaV_unbox(L,luatyp,ud) (*((luatyp *) lua_touserdata((L),(ud)))) #define luaV_checkvalid(L,luatyp,ud) \ luaV_checkcache((L), (void *) luaV_unbox((L),luatyp,(ud))) static void * luaV_checkudata(lua_State *L, int ud, const char *tname) { void *p = luaV_toudata(L, ud, tname); if (p == NULL) luaL_typeerror(L, ud, tname); return p; } static void luaV_pushtypval(lua_State *L, typval_T *tv) { if (tv == NULL) { lua_pushnil(L); return; } switch (tv->v_type) { case VAR_STRING: lua_pushstring(L, tv->vval.v_string == NULL ? "" : (char *)tv->vval.v_string); break; case VAR_NUMBER: lua_pushinteger(L, (int) tv->vval.v_number); break; #ifdef FEAT_FLOAT case VAR_FLOAT: lua_pushnumber(L, (lua_Number) tv->vval.v_float); break; #endif case VAR_LIST: luaV_pushlist(L, tv->vval.v_list); break; case VAR_DICT: luaV_pushdict(L, tv->vval.v_dict); break; case VAR_BOOL: case VAR_SPECIAL: if (tv->vval.v_number <= VVAL_TRUE) lua_pushinteger(L, (int) tv->vval.v_number); else lua_pushnil(L); break; case VAR_FUNC: luaV_pushfuncref(L, tv->vval.v_string); break; case VAR_PARTIAL: // TODO: handle partial arguments luaV_pushfuncref(L, partial_name(tv->vval.v_partial)); break; case VAR_BLOB: luaV_pushblob(L, tv->vval.v_blob); break; default: lua_pushnil(L); } } /* * Converts lua value at 'pos' to typval 'tv'. * Returns OK or FAIL. */ static int luaV_totypval(lua_State *L, int pos, typval_T *tv) { int status = OK; tv->v_lock = 0; switch (lua_type(L, pos)) { case LUA_TBOOLEAN: tv->v_type = VAR_BOOL; tv->vval.v_number = (varnumber_T) lua_toboolean(L, pos); break; case LUA_TNIL: tv->v_type = VAR_SPECIAL; tv->vval.v_number = VVAL_NULL; break; case LUA_TSTRING: tv->v_type = VAR_STRING; tv->vval.v_string = vim_strsave((char_u *) lua_tostring(L, pos)); break; case LUA_TNUMBER: #ifdef FEAT_FLOAT { const lua_Number n = lua_tonumber(L, pos); if (n > (lua_Number)INT64_MAX || n < (lua_Number)INT64_MIN || ((lua_Number)((varnumber_T)n)) != n) { tv->v_type = VAR_FLOAT; tv->vval.v_float = (float_T)n; } else { tv->v_type = VAR_NUMBER; tv->vval.v_number = (varnumber_T)n; } } #else tv->v_type = VAR_NUMBER; tv->vval.v_number = (varnumber_T) lua_tointeger(L, pos); #endif break; case LUA_TFUNCTION: { char_u *name; luaV_CFuncState *state; lua_pushvalue(L, pos); state = ALLOC_CLEAR_ONE(luaV_CFuncState); state->lua_funcref = luaL_ref(L, LUA_REGISTRYINDEX); state->L = L; state->lua_tableref = LUA_NOREF; name = register_cfunc(&luaV_call_lua_func, &luaV_call_lua_func_free, state); tv->v_type = VAR_FUNC; tv->vval.v_string = vim_strsave(name); break; } case LUA_TTABLE: { int lua_tableref; lua_pushvalue(L, pos); lua_tableref = luaL_ref(L, LUA_REGISTRYINDEX); if (lua_getmetatable(L, pos)) { lua_getfield(L, -1, LUA___CALL); if (lua_isfunction(L, -1)) { char_u *name; int lua_funcref = luaL_ref(L, LUA_REGISTRYINDEX); luaV_CFuncState *state = ALLOC_CLEAR_ONE(luaV_CFuncState); state->lua_funcref = lua_funcref; state->L = L; state->lua_tableref = lua_tableref; name = register_cfunc(&luaV_call_lua_func, &luaV_call_lua_func_free, state); tv->v_type = VAR_FUNC; tv->vval.v_string = vim_strsave(name); break; } } tv->v_type = VAR_NUMBER; tv->vval.v_number = 0; status = FAIL; break; } case LUA_TUSERDATA: { void *p = lua_touserdata(L, pos); if (lua_getmetatable(L, pos)) // has metatable? { // check list luaV_getfield(L, LUAVIM_LIST); if (lua_rawequal(L, -1, -2)) { tv->v_type = VAR_LIST; tv->vval.v_list = *((luaV_List *) p); ++tv->vval.v_list->lv_refcount; lua_pop(L, 2); // MTs break; } // check dict luaV_getfield(L, LUAVIM_DICT); if (lua_rawequal(L, -1, -3)) { tv->v_type = VAR_DICT; tv->vval.v_dict = *((luaV_Dict *) p); ++tv->vval.v_dict->dv_refcount; lua_pop(L, 3); // MTs break; } // check blob luaV_getfield(L, LUAVIM_BLOB); if (lua_rawequal(L, -1, -4)) { tv->v_type = VAR_BLOB; tv->vval.v_blob = *((luaV_Blob *) p); ++tv->vval.v_blob->bv_refcount; lua_pop(L, 4); // MTs break; } // check funcref luaV_getfield(L, LUAVIM_FUNCREF); if (lua_rawequal(L, -1, -5)) { luaV_Funcref *f = (luaV_Funcref *) p; func_ref(f->name); tv->v_type = VAR_FUNC; tv->vval.v_string = vim_strsave(f->name); lua_pop(L, 5); // MTs break; } lua_pop(L, 4); // MTs } } // FALLTHROUGH default: tv->v_type = VAR_NUMBER; tv->vval.v_number = 0; status = FAIL; } return status; } /* * similar to luaL_addlstring, but replaces \0 with \n if toline and * \n with \0 otherwise */ static void luaV_addlstring(luaL_Buffer *b, const char *s, size_t l, int toline) { while (l--) { if (*s == '\0' && toline) luaL_addchar(b, '\n'); else if (*s == '\n' && !toline) luaL_addchar(b, '\0'); else luaL_addchar(b, *s); s++; } } static void luaV_pushline(lua_State *L, buf_T *buf, linenr_T n) { const char *s = (const char *) ml_get_buf(buf, n, FALSE); luaL_Buffer b; luaL_buffinit(L, &b); luaV_addlstring(&b, s, strlen(s), 0); luaL_pushresult(&b); } static char_u * luaV_toline(lua_State *L, int pos) { size_t l; const char *s = lua_tolstring(L, pos, &l); luaL_Buffer b; luaL_buffinit(L, &b); luaV_addlstring(&b, s, l, 1); luaL_pushresult(&b); return (char_u *) lua_tostring(L, -1); } /* * pops a string s from the top of the stack and calls mf(t) for pieces t of * s separated by newlines */ static void luaV_msgfunc(lua_State *L, msgfunc_T mf) { luaL_Buffer b; size_t l; const char *p, *s = lua_tolstring(L, -1, &l); luaL_buffinit(L, &b); luaV_addlstring(&b, s, l, 0); luaL_pushresult(&b); // break string p = s = lua_tolstring(L, -1, &l); while (l--) { if (*p++ == '\0') // break? { mf((char *)s); s = p; } } mf((char *)s); lua_pop(L, 2); // original and modified strings } #define luaV_newtype(typ,tname,luatyp,luatname) \ static luatyp * \ luaV_new##tname(lua_State *L, typ *obj) \ { \ luatyp *o = (luatyp *) lua_newuserdata(L, sizeof(luatyp)); \ *o = obj; \ luaV_setudata(L, obj); /* cache[obj] = udata */ \ luaV_getfield(L, luatname); \ lua_setmetatable(L, -2); \ return o; \ } #define luaV_pushtype(typ,tname,luatyp) \ static luatyp * \ luaV_push##tname(lua_State *L, typ *obj) \ { \ luatyp *o = NULL; \ if (obj == NULL) \ lua_pushnil(L); \ else { \ luaV_getudata(L, obj); \ if (lua_isnil(L, -1)) /* not interned? */ \ { \ lua_pop(L, 1); \ o = luaV_new##tname(L, obj); \ } \ else \ o = (luatyp *) lua_touserdata(L, -1); \ } \ return o; \ } #define luaV_type_tostring(tname,luatname) \ static int \ luaV_##tname##_tostring(lua_State *L) \ { \ lua_pushfstring(L, "%s: %p", luatname, lua_touserdata(L, 1)); \ return 1; \ } // ======= List type ======= static luaV_List * luaV_newlist(lua_State *L, list_T *lis) { luaV_List *l = (luaV_List *) lua_newuserdata(L, sizeof(luaV_List)); *l = lis; lis->lv_refcount++; // reference in Lua luaV_setudata(L, lis); // cache[lis] = udata luaV_getfield(L, LUAVIM_LIST); lua_setmetatable(L, -2); return l; } luaV_pushtype(list_T, list, luaV_List) luaV_type_tostring(list, LUAVIM_LIST) static int luaV_list_len(lua_State *L) { list_T *l = luaV_unbox(L, luaV_List, 1); lua_pushinteger(L, (int) list_len(l)); return 1; } static int luaV_list_iter(lua_State *L) { listitem_T *li = (listitem_T *) lua_touserdata(L, lua_upvalueindex(2)); if (li == NULL) return 0; luaV_pushtypval(L, &li->li_tv); lua_pushlightuserdata(L, (void *) li->li_next); lua_replace(L, lua_upvalueindex(2)); return 1; } static int luaV_list_call(lua_State *L) { list_T *l = luaV_unbox(L, luaV_List, 1); lua_pushvalue(L, lua_upvalueindex(1)); // pass cache table along lua_pushlightuserdata(L, (void *) l->lv_first); lua_pushcclosure(L, luaV_list_iter, 2); return 1; } static int luaV_list_index(lua_State *L) { list_T *l = luaV_unbox(L, luaV_List, 1); if (lua_isnumber(L, 2)) // list item? { long n = (long) luaL_checkinteger(L, 2); listitem_T *li; // Lua array index starts with 1 while Vim uses 0, subtract 1 to // normalize. n -= 1; li = list_find(l, n); if (li == NULL) lua_pushnil(L); else luaV_pushtypval(L, &li->li_tv); } else if (lua_isstring(L, 2)) // method? { const char *s = lua_tostring(L, 2); if (strncmp(s, "add", 3) == 0 || strncmp(s, "insert", 6) == 0) { lua_getmetatable(L, 1); lua_getfield(L, -1, s); } else lua_pushnil(L); } else lua_pushnil(L); return 1; } static int luaV_list_newindex(lua_State *L) { list_T *l = luaV_unbox(L, luaV_List, 1); long n = (long) luaL_checkinteger(L, 2); listitem_T *li; // Lua array index starts with 1 while Vim uses 0, subtract 1 to normalize. n -= 1; if (l->lv_lock) luaL_error(L, "list is locked"); li = list_find(l, n); if (li == NULL) { if (!lua_isnil(L, 3)) { typval_T v; luaV_checktypval(L, 3, &v, "inserting list item"); if (list_insert_tv(l, &v, li) == FAIL) luaL_error(L, "failed to add item to list"); clear_tv(&v); } } else { if (lua_isnil(L, 3)) // remove? { vimlist_remove(l, li, li); listitem_free(l, li); } else { typval_T v; luaV_checktypval(L, 3, &v, "setting list item"); clear_tv(&li->li_tv); li->li_tv = v; } } return 0; } static int luaV_list_add(lua_State *L) { luaV_List *lis = luaV_checkudata(L, 1, LUAVIM_LIST); list_T *l = (list_T *) luaV_checkcache(L, (void *) *lis); typval_T v; if (l->lv_lock) luaL_error(L, "list is locked"); lua_settop(L, 2); luaV_checktypval(L, 2, &v, "adding list item"); if (list_append_tv(l, &v) == FAIL) luaL_error(L, "failed to add item to list"); clear_tv(&v); lua_settop(L, 1); return 1; } static int luaV_list_insert(lua_State *L) { luaV_List *lis = luaV_checkudata(L, 1, LUAVIM_LIST); list_T *l = (list_T *) luaV_checkcache(L, (void *) *lis); long pos = (long) luaL_optinteger(L, 3, 0); listitem_T *li = NULL; typval_T v; if (l->lv_lock) luaL_error(L, "list is locked"); if (pos < l->lv_len) { li = list_find(l, pos); if (li == NULL) luaL_error(L, "invalid position"); } lua_settop(L, 2); luaV_checktypval(L, 2, &v, "inserting list item"); if (list_insert_tv(l, &v, li) == FAIL) luaL_error(L, "failed to add item to list"); clear_tv(&v); lua_settop(L, 1); return 1; } static const luaL_Reg luaV_List_mt[] = { {"__tostring", luaV_list_tostring}, {"__len", luaV_list_len}, {"__call", luaV_list_call}, {"__index", luaV_list_index}, {"__newindex", luaV_list_newindex}, {"add", luaV_list_add}, {"insert", luaV_list_insert}, {NULL, NULL} }; // ======= Dict type ======= static luaV_Dict * luaV_newdict(lua_State *L, dict_T *dic) { luaV_Dict *d = (luaV_Dict *) lua_newuserdata(L, sizeof(luaV_Dict)); *d = dic; dic->dv_refcount++; // reference in Lua luaV_setudata(L, dic); // cache[dic] = udata luaV_getfield(L, LUAVIM_DICT); lua_setmetatable(L, -2); return d; } luaV_pushtype(dict_T, dict, luaV_Dict) luaV_type_tostring(dict, LUAVIM_DICT) static int luaV_dict_len(lua_State *L) { dict_T *d = luaV_unbox(L, luaV_Dict, 1); lua_pushinteger(L, (int) dict_len(d)); return 1; } static int luaV_dict_iter(lua_State *L UNUSED) { #ifdef FEAT_EVAL hashitem_T *hi = (hashitem_T *) lua_touserdata(L, lua_upvalueindex(2)); int n = lua_tointeger(L, lua_upvalueindex(3)); dictitem_T *di; if (n <= 0) return 0; while (HASHITEM_EMPTY(hi)) hi++; di = dict_lookup(hi); lua_pushstring(L, (char *) hi->hi_key); luaV_pushtypval(L, &di->di_tv); lua_pushlightuserdata(L, (void *) (hi + 1)); lua_replace(L, lua_upvalueindex(2)); lua_pushinteger(L, n - 1); lua_replace(L, lua_upvalueindex(3)); return 2; #else return 0; #endif } static int luaV_dict_call(lua_State *L) { dict_T *d = luaV_unbox(L, luaV_Dict, 1); hashtab_T *ht = &d->dv_hashtab; lua_pushvalue(L, lua_upvalueindex(1)); // pass cache table along lua_pushlightuserdata(L, (void *) ht->ht_array); lua_pushinteger(L, ht->ht_used); // # remaining items lua_pushcclosure(L, luaV_dict_iter, 3); return 1; } static int luaV_dict_index(lua_State *L) { dict_T *d = luaV_unbox(L, luaV_Dict, 1); char_u *key = (char_u *) luaL_checkstring(L, 2); dictitem_T *di = dict_find(d, key, -1); if (di == NULL) lua_pushnil(L); else { luaV_pushtypval(L, &di->di_tv); if (di->di_tv.v_type == VAR_FUNC) // funcref? { luaV_Funcref *f = (luaV_Funcref *) lua_touserdata(L, -1); f->self = d; // keep "self" reference d->dv_refcount++; } } return 1; } static int luaV_dict_newindex(lua_State *L) { dict_T *d = luaV_unbox(L, luaV_Dict, 1); char_u *key = (char_u *) luaL_checkstring(L, 2); dictitem_T *di; typval_T tv; if (d->dv_lock) luaL_error(L, "dict is locked"); if (key == NULL) return 0; if (*key == NUL) luaL_error(L, "empty key"); if (!lua_isnil(L, 3)) // read value? { luaV_checktypval(L, 3, &tv, "setting dict item"); if (d->dv_scope == VAR_DEF_SCOPE && tv.v_type == VAR_FUNC) { clear_tv(&tv); luaL_error(L, "cannot assign funcref to builtin scope"); } } di = dict_find(d, key, -1); if (di == NULL) // non-existing key? { if (lua_isnil(L, 3)) return 0; di = dictitem_alloc(key); if (di == NULL) { clear_tv(&tv); return 0; } if (dict_add(d, di) == FAIL) { vim_free(di); clear_tv(&tv); return 0; } } else clear_tv(&di->di_tv); if (lua_isnil(L, 3)) // remove? { hashitem_T *hi = hash_find(&d->dv_hashtab, di->di_key); hash_remove(&d->dv_hashtab, hi); dictitem_free(di); } else di->di_tv = tv; return 0; } static const luaL_Reg luaV_Dict_mt[] = { {"__tostring", luaV_dict_tostring}, {"__len", luaV_dict_len}, {"__call", luaV_dict_call}, {"__index", luaV_dict_index}, {"__newindex", luaV_dict_newindex}, {NULL, NULL} }; // ======= Blob type ======= static luaV_Blob * luaV_newblob(lua_State *L, blob_T *blo) { luaV_Blob *b = (luaV_Blob *) lua_newuserdata(L, sizeof(luaV_Blob)); *b = blo; blo->bv_refcount++; // reference in Lua luaV_setudata(L, blo); // cache[blo] = udata luaV_getfield(L, LUAVIM_BLOB); lua_setmetatable(L, -2); return b; } luaV_pushtype(blob_T, blob, luaV_Blob) luaV_type_tostring(blob, LUAVIM_BLOB) static int luaV_blob_gc(lua_State *L) { blob_T *b = luaV_unbox(L, luaV_Blob, 1); blob_unref(b); return 0; } static int luaV_blob_len(lua_State *L) { blob_T *b = luaV_unbox(L, luaV_Blob, 1); lua_pushinteger(L, (int) blob_len(b)); return 1; } static int luaV_blob_index(lua_State *L) { blob_T *b = luaV_unbox(L, luaV_Blob, 1); if (lua_isnumber(L, 2)) { int idx = luaL_checkinteger(L, 2); if (idx < blob_len(b)) lua_pushnumber(L, (lua_Number) blob_get(b, idx)); else lua_pushnil(L); } else if (lua_isstring(L, 2)) { const char *s = lua_tostring(L, 2); if (strncmp(s, "add", 3) == 0) { lua_getmetatable(L, 1); lua_getfield(L, -1, s); } else lua_pushnil(L); } else lua_pushnil(L); return 1; } static int luaV_blob_newindex(lua_State *L) { blob_T *b = luaV_unbox(L, luaV_Blob, 1); if (b->bv_lock) luaL_error(L, "blob is locked"); if (lua_isnumber(L, 2)) { long len = blob_len(b); int idx = luaL_checkinteger(L, 2); int val = luaL_checkinteger(L, 3); if (idx < len || (idx == len && ga_grow(&b->bv_ga, 1) == OK)) { blob_set(b, idx, (char_u) val); if (idx == len) ++b->bv_ga.ga_len; } else luaL_error(L, "index out of range"); } return 0; } static int luaV_blob_add(lua_State *L) { luaV_Blob *blo = luaV_checkudata(L, 1, LUAVIM_BLOB); blob_T *b = (blob_T *) luaV_checkcache(L, (void *) *blo); if (b->bv_lock) luaL_error(L, "blob is locked"); lua_settop(L, 2); if (!lua_isstring(L, 2)) luaL_error(L, "string expected, got %s", luaL_typename(L, 2)); else { size_t i, l = 0; const char *s = lua_tolstring(L, 2, &l); if (ga_grow(&b->bv_ga, (int)l) == OK) for (i = 0; i < l; ++i) ga_append(&b->bv_ga, s[i]); } lua_settop(L, 1); return 1; } static const luaL_Reg luaV_Blob_mt[] = { {"__tostring", luaV_blob_tostring}, {"__gc", luaV_blob_gc}, {"__len", luaV_blob_len}, {"__index", luaV_blob_index}, {"__newindex", luaV_blob_newindex}, {"add", luaV_blob_add}, {NULL, NULL} }; // ======= Funcref type ======= static luaV_Funcref * luaV_newfuncref(lua_State *L, char_u *name) { luaV_Funcref *f = (luaV_Funcref *)lua_newuserdata(L, sizeof(luaV_Funcref)); if (name != NULL) { func_ref(name); f->name = vim_strsave(name); } f->self = NULL; luaV_getfield(L, LUAVIM_FUNCREF); lua_setmetatable(L, -2); return f; } static luaV_Funcref * luaV_pushfuncref(lua_State *L, char_u *name) { return luaV_newfuncref(L, name); } luaV_type_tostring(funcref, LUAVIM_FUNCREF) static int luaV_funcref_gc(lua_State *L) { luaV_Funcref *f = (luaV_Funcref *) lua_touserdata(L, 1); func_unref(f->name); vim_free(f->name); // NOTE: Don't call "dict_unref(f->self)", because the dict of "f->self" // will be (or has been already) freed by Vim's garbage collection. return 0; } // equivalent to string(funcref) static int luaV_funcref_len(lua_State *L) { luaV_Funcref *f = (luaV_Funcref *) lua_touserdata(L, 1); lua_pushstring(L, (const char *) f->name); return 1; } static int luaV_funcref_call(lua_State *L) { luaV_Funcref *f = (luaV_Funcref *) lua_touserdata(L, 1); int i, n = lua_gettop(L) - 1; // #args int status = FAIL; typval_T args; typval_T rettv; args.v_type = VAR_LIST; args.vval.v_list = list_alloc(); rettv.v_type = VAR_UNKNOWN; // as in clear_tv if (args.vval.v_list != NULL) { typval_T v; for (i = 0; i < n; i++) { luaV_checktypval(L, i + 2, &v, "calling funcref"); list_append_tv(args.vval.v_list, &v); clear_tv(&v); } status = func_call(f->name, &args, NULL, f->self, &rettv); if (status == OK) luaV_pushtypval(L, &rettv); clear_tv(&args); clear_tv(&rettv); } if (status != OK) luaL_error(L, "cannot call funcref"); return 1; } static const luaL_Reg luaV_Funcref_mt[] = { {"__tostring", luaV_funcref_tostring}, {"__gc", luaV_funcref_gc}, {"__len", luaV_funcref_len}, {"__call", luaV_funcref_call}, {NULL, NULL} }; // ======= Buffer type ======= luaV_newtype(buf_T, buffer, luaV_Buffer, LUAVIM_BUFFER) luaV_pushtype(buf_T, buffer, luaV_Buffer) luaV_type_tostring(buffer, LUAVIM_BUFFER) static int luaV_buffer_len(lua_State *L) { buf_T *b = (buf_T *) luaV_checkvalid(L, luaV_Buffer, 1); lua_pushinteger(L, b->b_ml.ml_line_count); return 1; } static int luaV_buffer_call(lua_State *L) { buf_T *b = (buf_T *) luaV_checkvalid(L, luaV_Buffer, 1); lua_settop(L, 1); set_curbuf(b, DOBUF_SPLIT); return 1; } static int luaV_buffer_index(lua_State *L) { buf_T *b = (buf_T *) luaV_checkvalid(L, luaV_Buffer, 1); linenr_T n = (linenr_T) lua_tointeger(L, 2); if (n > 0 && n <= b->b_ml.ml_line_count) luaV_pushline(L, b, n); else if (lua_isstring(L, 2)) { const char *s = lua_tostring(L, 2); if (strncmp(s, "name", 4) == 0) lua_pushstring(L, (b->b_sfname == NULL) ? "" : (char *) b->b_sfname); else if (strncmp(s, "fname", 5) == 0) lua_pushstring(L, (b->b_ffname == NULL) ? "" : (char *) b->b_ffname); else if (strncmp(s, "number", 6) == 0) lua_pushinteger(L, b->b_fnum); // methods else if (strncmp(s, "insert", 6) == 0 || strncmp(s, "next", 4) == 0 || strncmp(s, "previous", 8) == 0 || strncmp(s, "isvalid", 7) == 0) { lua_getmetatable(L, 1); lua_getfield(L, -1, s); } else lua_pushnil(L); } else lua_pushnil(L); return 1; } static int luaV_buffer_newindex(lua_State *L) { buf_T *b = (buf_T *) luaV_checkvalid(L, luaV_Buffer, 1); linenr_T n = (linenr_T) luaL_checkinteger(L, 2); #ifdef HAVE_SANDBOX luaV_checksandbox(L); #endif if (n < 1 || n > b->b_ml.ml_line_count) luaL_error(L, "invalid line number"); if (lua_isnil(L, 3)) // delete line { buf_T *buf = curbuf; curbuf = b; if (u_savedel(n, 1L) == FAIL) { curbuf = buf; luaL_error(L, "cannot save undo information"); } else if (ml_delete(n) == FAIL) { curbuf = buf; luaL_error(L, "cannot delete line"); } else { deleted_lines_mark(n, 1L); if (b == curwin->w_buffer) // fix cursor in current window? { if (curwin->w_cursor.lnum >= n) { if (curwin->w_cursor.lnum > n) { curwin->w_cursor.lnum -= 1; check_cursor_col(); } else check_cursor(); changed_cline_bef_curs(); } invalidate_botline(); } } curbuf = buf; } else if (lua_isstring(L, 3)) // update line { buf_T *buf = curbuf; curbuf = b; if (u_savesub(n) == FAIL) { curbuf = buf; luaL_error(L, "cannot save undo information"); } else if (ml_replace(n, luaV_toline(L, 3), TRUE) == FAIL) { curbuf = buf; luaL_error(L, "cannot replace line"); } else changed_bytes(n, 0); curbuf = buf; if (b == curwin->w_buffer) check_cursor_col(); } else luaL_error(L, "wrong argument to change line"); return 0; } static int luaV_buffer_insert(lua_State *L) { luaV_Buffer *lb = luaV_checkudata(L, 1, LUAVIM_BUFFER); buf_T *b = (buf_T *) luaV_checkcache(L, (void *) *lb); linenr_T last = b->b_ml.ml_line_count; linenr_T n = (linenr_T) luaL_optinteger(L, 3, last); buf_T *buf; luaL_checktype(L, 2, LUA_TSTRING); #ifdef HAVE_SANDBOX luaV_checksandbox(L); #endif // fix insertion line if (n < 0) n = 0; if (n > last) n = last; // insert buf = curbuf; curbuf = b; if (u_save(n, n + 1) == FAIL) { curbuf = buf; luaL_error(L, "cannot save undo information"); } else if (ml_append(n, luaV_toline(L, 2), 0, FALSE) == FAIL) { curbuf = buf; luaL_error(L, "cannot insert line"); } else appended_lines_mark(n, 1L); curbuf = buf; update_screen(VALID); return 0; } static int luaV_buffer_next(lua_State *L) { luaV_Buffer *b = luaV_checkudata(L, 1, LUAVIM_BUFFER); buf_T *buf = (buf_T *) luaV_checkcache(L, (void *) *b); luaV_pushbuffer(L, buf->b_next); return 1; } static int luaV_buffer_previous(lua_State *L) { luaV_Buffer *b = luaV_checkudata(L, 1, LUAVIM_BUFFER); buf_T *buf = (buf_T *) luaV_checkcache(L, (void *) *b); luaV_pushbuffer(L, buf->b_prev); return 1; } static int luaV_buffer_isvalid(lua_State *L) { luaV_Buffer *b = luaV_checkudata(L, 1, LUAVIM_BUFFER); luaV_getudata(L, *b); lua_pushboolean(L, !lua_isnil(L, -1)); return 1; } static const luaL_Reg luaV_Buffer_mt[] = { {"__tostring", luaV_buffer_tostring}, {"__len", luaV_buffer_len}, {"__call", luaV_buffer_call}, {"__index", luaV_buffer_index}, {"__newindex", luaV_buffer_newindex}, {"insert", luaV_buffer_insert}, {"next", luaV_buffer_next}, {"previous", luaV_buffer_previous}, {"isvalid", luaV_buffer_isvalid}, {NULL, NULL} }; // ======= Window type ======= luaV_newtype(win_T, window, luaV_Window, LUAVIM_WINDOW) luaV_pushtype(win_T, window, luaV_Window) luaV_type_tostring(window, LUAVIM_WINDOW) static int luaV_window_call(lua_State *L) { win_T *w = (win_T *) luaV_checkvalid(L, luaV_Window, 1); lua_settop(L, 1); win_goto(w); return 1; } static int luaV_window_index(lua_State *L) { win_T *w = (win_T *) luaV_checkvalid(L, luaV_Window, 1); const char *s = luaL_checkstring(L, 2); if (strncmp(s, "buffer", 6) == 0) luaV_pushbuffer(L, w->w_buffer); else if (strncmp(s, "line", 4) == 0) lua_pushinteger(L, w->w_cursor.lnum); else if (strncmp(s, "col", 3) == 0) lua_pushinteger(L, w->w_cursor.col + 1); else if (strncmp(s, "width", 5) == 0) lua_pushinteger(L, w->w_width); else if (strncmp(s, "height", 6) == 0) lua_pushinteger(L, w->w_height); // methods else if (strncmp(s, "next", 4) == 0 || strncmp(s, "previous", 8) == 0 || strncmp(s, "isvalid", 7) == 0) { lua_getmetatable(L, 1); lua_getfield(L, -1, s); } else lua_pushnil(L); return 1; } static int luaV_window_newindex(lua_State *L) { win_T *w = (win_T *) luaV_checkvalid(L, luaV_Window, 1); const char *s = luaL_checkstring(L, 2); int v = luaL_checkinteger(L, 3); if (strncmp(s, "line", 4) == 0) { #ifdef HAVE_SANDBOX luaV_checksandbox(L); #endif if (v < 1 || v > w->w_buffer->b_ml.ml_line_count) luaL_error(L, "line out of range"); w->w_cursor.lnum = v; update_screen(VALID); } else if (strncmp(s, "col", 3) == 0) { #ifdef HAVE_SANDBOX luaV_checksandbox(L); #endif w->w_cursor.col = v - 1; w->w_set_curswant = TRUE; update_screen(VALID); } else if (strncmp(s, "width", 5) == 0) { win_T *win = curwin; #ifdef FEAT_GUI need_mouse_correct = TRUE; #endif curwin = w; win_setwidth(v); curwin = win; } else if (strncmp(s, "height", 6) == 0) { win_T *win = curwin; #ifdef FEAT_GUI need_mouse_correct = TRUE; #endif curwin = w; win_setheight(v); curwin = win; } else luaL_error(L, "invalid window property: `%s'", s); return 0; } static int luaV_window_next(lua_State *L) { luaV_Window *w = luaV_checkudata(L, 1, LUAVIM_WINDOW); win_T *win = (win_T *) luaV_checkcache(L, (void *) *w); luaV_pushwindow(L, win->w_next); return 1; } static int luaV_window_previous(lua_State *L) { luaV_Window *w = luaV_checkudata(L, 1, LUAVIM_WINDOW); win_T *win = (win_T *) luaV_checkcache(L, (void *) *w); luaV_pushwindow(L, win->w_prev); return 1; } static int luaV_window_isvalid(lua_State *L) { luaV_Window *w = luaV_checkudata(L, 1, LUAVIM_WINDOW); luaV_getudata(L, *w); lua_pushboolean(L, !lua_isnil(L, -1)); return 1; } static const luaL_Reg luaV_Window_mt[] = { {"__tostring", luaV_window_tostring}, {"__call", luaV_window_call}, {"__index", luaV_window_index}, {"__newindex", luaV_window_newindex}, {"next", luaV_window_next}, {"previous", luaV_window_previous}, {"isvalid", luaV_window_isvalid}, {NULL, NULL} }; // ======= Vim module ======= static int luaV_print(lua_State *L) { int i, n = lua_gettop(L); // nargs const char *s; size_t l; garray_T msg_ga; ga_init2(&msg_ga, 1, 128); lua_getglobal(L, "tostring"); for (i = 1; i <= n; i++) { lua_pushvalue(L, -1); // tostring lua_pushvalue(L, i); // arg lua_call(L, 1, 1); s = lua_tolstring(L, -1, &l); if (s == NULL) return luaL_error(L, "cannot convert to string"); if (i > 1) ga_append(&msg_ga, ' '); // use space instead of tab ga_concat_len(&msg_ga, (char_u *)s, l); lua_pop(L, 1); } // Replace any "\n" with "\0" for (i = 0; i < msg_ga.ga_len; i++) if (((char *)msg_ga.ga_data)[i] == '\n') ((char *)msg_ga.ga_data)[i] = '\0'; lua_pushlstring(L, msg_ga.ga_data, msg_ga.ga_len); if (!got_int) luaV_msg(L); ga_clear(&msg_ga); return 0; } static int luaV_debug(lua_State *L) { lua_settop(L, 0); lua_getglobal(L, "vim"); lua_getfield(L, -1, "eval"); lua_remove(L, -2); // vim.eval at position 1 for (;;) { const char *input; size_t l; lua_pushvalue(L, 1); // vim.eval lua_pushliteral(L, "input('lua_debug> ')"); lua_call(L, 1, 1); // return string input = lua_tolstring(L, -1, &l); if (l == 0 || strcmp(input, "cont") == 0) return 0; msg_putchar('\n'); // avoid outputting on input line if (luaL_loadbuffer(L, input, l, "=(debug command)") || lua_pcall(L, 0, 0, 0)) luaV_emsg(L); lua_settop(L, 1); // remove eventual returns, but keep vim.eval } } static dict_T * luaV_get_var_scope(lua_State *L) { const char *scope = luaL_checkstring(L, 1); dict_T *dict = NULL; if (STRICMP((char *)scope, "g") == 0) dict = get_globvar_dict(); else if (STRICMP((char *)scope, "v") == 0) dict = get_vimvar_dict(); else if (STRICMP((char *)scope, "b") == 0) dict = curbuf->b_vars; else if (STRICMP((char *)scope, "w") == 0) dict = curwin->w_vars; else if (STRICMP((char *)scope, "t") == 0) dict = curtab->tp_vars; else { luaL_error(L, "invalid scope %s", scope); return NULL; } return dict; } static int luaV_setvar(lua_State *L) { dict_T *dict; dictitem_T *di; size_t len; char *name; int del; char *error = NULL; name = (char *)luaL_checklstring(L, 3, &len); del = (lua_gettop(L) < 4) || lua_isnil(L, 4); dict = luaV_get_var_scope(L); if (dict == NULL) return 0; di = dict_find(dict, (char_u *)name, (int)len); if (di != NULL) { if (di->di_flags & DI_FLAGS_RO) error = "variable is read-only"; else if (di->di_flags & DI_FLAGS_LOCK) error = "variable is locked"; else if (del && di->di_flags & DI_FLAGS_FIX) error = "variable is fixed"; if (error != NULL) return luaL_error(L, error); } else if (dict->dv_lock) return luaL_error(L, "Dictionary is locked"); if (del) { // Delete the key if (di == NULL) // Doesn't exist, nothing to do return 0; else // Delete the entry dictitem_remove(dict, di); } else { // Update the key typval_T tv; // Convert the lua value to a Vim script type in the temporary variable lua_pushvalue(L, 4); if (luaV_totypval(L, -1, &tv) == FAIL) return luaL_error(L, "Couldn't convert lua value"); if (di == NULL) { // Need to create an entry di = dictitem_alloc((char_u *)name); if (di == NULL) { clear_tv(&tv); return 0; } // Update the value copy_tv(&tv, &di->di_tv); if (dict_add(dict, di) == FAIL) { dictitem_free(di); clear_tv(&tv); return luaL_error(L, "Couldn't add to dictionary"); } } else { // Clear the old value clear_tv(&di->di_tv); // Update the value copy_tv(&tv, &di->di_tv); } // Clear the temporary variable clear_tv(&tv); } return 0; } static int luaV_getvar(lua_State *L) { dict_T *dict = luaV_get_var_scope(L); size_t len; const char *name = luaL_checklstring(L, 3, &len); dictitem_T *di = dict_find(dict, (char_u *)name, (int)len); if (di == NULL) return 0; // nil luaV_pushtypval(L, &di->di_tv); return 1; } static int luaV_command(lua_State *L) { char_u *s = vim_strsave((char_u *)luaL_checkstring(L, 1)); execute_cmds_from_string(s); vim_free(s); update_screen(VALID); return 0; } static int luaV_eval(lua_State *L) { typval_T *tv = eval_expr((char_u *) luaL_checkstring(L, 1), NULL); if (tv == NULL) luaL_error(L, "invalid expression"); luaV_pushtypval(L, tv); free_tv(tv); return 1; } static int luaV_beep(lua_State *L UNUSED) { vim_beep(BO_LANG); return 0; } static int luaV_line(lua_State *L) { luaV_pushline(L, curbuf, curwin->w_cursor.lnum); return 1; } static int luaV_list(lua_State *L) { list_T *l; int initarg = !lua_isnoneornil(L, 1); if (initarg && lua_type(L, 1) != LUA_TTABLE) luaL_error(L, "table expected, got %s", luaL_typename(L, 1)); l = list_alloc(); if (l == NULL) lua_pushnil(L); else { luaV_newlist(L, l); if (initarg) // traverse table to init list { int notnil, i = 0; typval_T v; do { lua_rawgeti(L, 1, ++i); notnil = !lua_isnil(L, -1); if (notnil) { luaV_checktypval(L, -1, &v, "vim.list"); list_append_tv(l, &v); clear_tv(&v); } lua_pop(L, 1); // value } while (notnil); } } return 1; } static int luaV_dict(lua_State *L) { dict_T *d; int initarg = !lua_isnoneornil(L, 1); if (initarg && lua_type(L, 1) != LUA_TTABLE) luaL_error(L, "table expected, got %s", luaL_typename(L, 1)); d = dict_alloc(); if (d == NULL) lua_pushnil(L); else { luaV_newdict(L, d); if (initarg) // traverse table to init dict { lua_pushnil(L); while (lua_next(L, 1)) { char_u *key; dictitem_T *di; typval_T v; lua_pushvalue(L, -2); // dup key in case it's a number key = (char_u *) lua_tostring(L, -1); if (key == NULL) { lua_pushnil(L); return 1; } if (*key == NUL) luaL_error(L, "table has empty key"); luaV_checktypval(L, -2, &v, "vim.dict"); // value di = dictitem_alloc(key); if (di == NULL || dict_add(d, di) == FAIL) { vim_free(di); lua_pushnil(L); return 1; } di->di_tv = v; lua_pop(L, 2); // key copy and value } } } return 1; } static int luaV_blob(lua_State *L) { blob_T *b; int initarg = !lua_isnoneornil(L, 1); if (initarg && !lua_isstring(L, 1)) luaL_error(L, "string expected, got %s", luaL_typename(L, 1)); b = blob_alloc(); if (b == NULL) lua_pushnil(L); else { luaV_newblob(L, b); if (initarg) { size_t i, l = 0; const char *s = lua_tolstring(L, 1, &l); if (ga_grow(&b->bv_ga, (int)l) == OK) for (i = 0; i < l; ++i) ga_append(&b->bv_ga, s[i]); } } return 1; } static int luaV_funcref(lua_State *L) { const char *name = luaL_checkstring(L, 1); // note: not checking if function exists (needs function_exists) if (name == NULL || *name == NUL || VIM_ISDIGIT(*name)) luaL_error(L, "invalid function name: %s", name); luaV_newfuncref(L, (char_u *) name); return 1; } static int luaV_buffer(lua_State *L) { buf_T *buf; if (lua_isstring(L, 1)) // get by number or name? { if (lua_isnumber(L, 1)) // by number? { int n = lua_tointeger(L, 1); FOR_ALL_BUFFERS(buf) if (buf->b_fnum == n) break; } else // by name { size_t l; const char *s = lua_tolstring(L, 1, &l); FOR_ALL_BUFFERS(buf) { if (buf->b_ffname == NULL || buf->b_sfname == NULL) { if (l == 0) break; } else if (strncmp(s, (char *)buf->b_ffname, l) == 0 || strncmp(s, (char *)buf->b_sfname, l) == 0) break; } } } else buf = (lua_toboolean(L, 1)) ? firstbuf : curbuf; // first buffer? luaV_pushbuffer(L, buf); return 1; } static int luaV_window(lua_State *L) { win_T *win; if (lua_isnumber(L, 1)) // get by number? { int n = lua_tointeger(L, 1); for (win = firstwin; win != NULL; win = win->w_next, n--) if (n == 1) break; } else win = (lua_toboolean(L, 1)) ? firstwin : curwin; // first window? luaV_pushwindow(L, win); return 1; } static int luaV_open(lua_State *L) { char_u *s = NULL; #ifdef HAVE_SANDBOX luaV_checksandbox(L); #endif if (lua_isstring(L, 1)) s = (char_u *) lua_tostring(L, 1); luaV_pushbuffer(L, buflist_new(s, NULL, 1L, BLN_LISTED)); return 1; } static int luaV_type(lua_State *L) { luaL_checkany(L, 1); if (lua_type(L, 1) == LUA_TUSERDATA) // check vim udata? { lua_settop(L, 1); if (lua_getmetatable(L, 1)) { luaV_getfield(L, LUAVIM_LIST); if (lua_rawequal(L, -1, 2)) { lua_pushstring(L, "list"); return 1; } luaV_getfield(L, LUAVIM_DICT); if (lua_rawequal(L, -1, 2)) { lua_pushstring(L, "dict"); return 1; } luaV_getfield(L, LUAVIM_BLOB); if (lua_rawequal(L, -1, 2)) { lua_pushstring(L, "blob"); return 1; } luaV_getfield(L, LUAVIM_FUNCREF); if (lua_rawequal(L, -1, 2)) { lua_pushstring(L, "funcref"); return 1; } luaV_getfield(L, LUAVIM_BUFFER); if (lua_rawequal(L, -1, 2)) { lua_pushstring(L, "buffer"); return 1; } luaV_getfield(L, LUAVIM_WINDOW); if (lua_rawequal(L, -1, 2)) { lua_pushstring(L, "window"); return 1; } } } lua_pushstring(L, luaL_typename(L, 1)); // fallback return 1; } static int luaV_call(lua_State *L) { int argc = lua_gettop(L) - 1; size_t funcname_len; char_u *funcname; char *error = NULL; typval_T rettv; typval_T argv[MAX_FUNC_ARGS + 1]; int i = 0; if (argc > MAX_FUNC_ARGS) return luaL_error(L, "Function called with too many arguments"); funcname = (char_u *)luaL_checklstring(L, 1, &funcname_len); for (; i < argc; i++) { if (luaV_totypval(L, i + 2, &argv[i]) == FAIL) { error = "lua: cannot convert value"; goto free_vim_args; } } argv[argc].v_type = VAR_UNKNOWN; if (call_vim_function(funcname, argc, argv, &rettv) == FAIL) { error = "lua: call_vim_function failed"; goto free_vim_args; } luaV_pushtypval(L, &rettv); clear_tv(&rettv); free_vim_args: while (i > 0) clear_tv(&argv[--i]); if (error == NULL) return 1; else return luaL_error(L, error); } /* * Return the Vim version as a Lua table */ static int luaV_version(lua_State *L) { lua_newtable(L); lua_pushstring(L, "major"); lua_pushinteger(L, VIM_VERSION_MAJOR); lua_settable(L, -3); lua_pushstring(L, "minor"); lua_pushinteger(L, VIM_VERSION_MINOR); lua_settable(L, -3); lua_pushstring(L, "patch"); lua_pushinteger(L, highest_patch()); lua_settable(L, -3); return 1; } static const luaL_Reg luaV_module[] = { {"command", luaV_command}, {"eval", luaV_eval}, {"beep", luaV_beep}, {"line", luaV_line}, {"list", luaV_list}, {"dict", luaV_dict}, {"blob", luaV_blob}, {"funcref", luaV_funcref}, {"buffer", luaV_buffer}, {"window", luaV_window}, {"open", luaV_open}, {"type", luaV_type}, {"call", luaV_call}, {"_getvar", luaV_getvar}, {"_setvar", luaV_setvar}, {"version", luaV_version}, {"lua_version", NULL}, {NULL, NULL} }; /* * for freeing list, dict, buffer and window objects; lightuserdata as arg */ static int luaV_free(lua_State *L) { lua_pushnil(L); luaV_setudata(L, lua_touserdata(L, 1)); return 0; } static int luaV_luaeval(lua_State *L) { luaL_Buffer b; size_t l; const char *str = lua_tolstring(L, 1, &l); typval_T *arg = (typval_T *) lua_touserdata(L, 2); typval_T *rettv = (typval_T *) lua_touserdata(L, 3); luaL_buffinit(L, &b); luaL_addlstring(&b, LUAVIM_EVALHEADER, sizeof(LUAVIM_EVALHEADER) - 1); luaL_addlstring(&b, str, l); luaL_pushresult(&b); str = lua_tolstring(L, -1, &l); if (luaL_loadbuffer(L, str, l, LUAVIM_EVALNAME)) // compile error? { luaV_emsg(L); return 0; } luaV_pushtypval(L, arg); if (lua_pcall(L, 1, 1, 0)) // running error? { luaV_emsg(L); return 0; } if (luaV_totypval(L, -1, rettv) == FAIL) emsg("luaeval: cannot convert value"); return 0; } static int luaV_setref(lua_State *L) { int copyID = lua_tointeger(L, 1); int abort = FALSE; luaV_getfield(L, LUAVIM_LIST); luaV_getfield(L, LUAVIM_DICT); luaV_getfield(L, LUAVIM_FUNCREF); lua_pushnil(L); // traverse cache table while (!abort && lua_next(L, lua_upvalueindex(1)) != 0) { lua_getmetatable(L, -1); if (lua_rawequal(L, -1, 2)) // list? { list_T *l = (list_T *)lua_touserdata(L, 5); // key abort = set_ref_in_list(l, copyID); } else if (lua_rawequal(L, -1, 3)) // dict? { dict_T *d = (dict_T *)lua_touserdata(L, 5); // key abort = set_ref_in_dict(d, copyID); } else if (lua_rawequal(L, -1, 4)) // funcref? { luaV_Funcref *f = (luaV_Funcref *)lua_touserdata(L, 5); // key abort = set_ref_in_dict(f->self, copyID); } lua_pop(L, 2); // metatable and value } lua_pushinteger(L, abort); return 1; } static int luaV_pushversion(lua_State *L) { int major = 0; int minor = 0; int patch = 0; char s[16]; sscanf(LUAVIM_VERSION, "Lua %d.%d.%d", &major, &minor, &patch); vim_snprintf(s, sizeof(s), "%d.%d.%d", major, minor, patch); lua_pushstring(L, s); return 0; } #define LUA_VIM_FN_CODE \ "vim.fn = setmetatable({}, {\n"\ " __index = function (t, key)\n"\ " local function _fn(...)\n"\ " return vim.call(key, ...)\n"\ " end\n"\ " t[key] = _fn\n"\ " return _fn\n"\ " end\n"\ " })" #define LUA_VIM_UPDATE_PACKAGE_PATHS \ "local last_vim_paths = {}\n"\ "vim._update_package_paths = function ()\n"\ " local cur_vim_paths = {}\n"\ " local function split(s, delimiter)\n"\ " result = {}\n"\ " for match in (s..delimiter):gmatch(\"(.-)\"..delimiter) do\n"\ " table.insert(result, match)\n"\ " end\n"\ " return result\n"\ " end\n"\ " local rtps = split(vim.eval('&runtimepath'), ',')\n"\ " local sep = package.config:sub(1, 1)\n"\ " for _, key in ipairs({'path', 'cpath'}) do\n"\ " local orig_str = package[key] .. ';'\n"\ " local pathtrails_ordered = {}\n"\ " -- Note: ignores trailing item without trailing `;`. Not using something\n"\ " -- simpler in order to preserve empty items (stand for default path).\n"\ " local orig = {}\n"\ " for s in orig_str:gmatch('[^;]*;') do\n"\ " s = s:sub(1, -2) -- Strip trailing semicolon\n"\ " orig[#orig + 1] = s\n"\ " end\n"\ " if key == 'path' then\n"\ " -- /?.lua and /?/init.lua\n"\ " pathtrails_ordered = {sep .. '?.lua', sep .. '?' .. sep .. 'init.lua'}\n"\ " else\n"\ " local pathtrails = {}\n"\ " for _, s in ipairs(orig) do\n"\ " -- Find out path patterns. pathtrail should contain something like\n"\ " -- /?.so, \?.dll. This allows not to bother determining what correct\n"\ " -- suffixes are.\n"\ " local pathtrail = s:match('[/\\\\][^/\\\\]*%?.*$')\n"\ " if pathtrail and not pathtrails[pathtrail] then\n"\ " pathtrails[pathtrail] = true\n"\ " pathtrails_ordered[#pathtrails_ordered + 1] = pathtrail\n"\ " end\n"\ " end\n"\ " end\n"\ " local new = {}\n"\ " for _, rtp in ipairs(rtps) do\n"\ " if not rtp:match(';') then\n"\ " for _, pathtrail in pairs(pathtrails_ordered) do\n"\ " local new_path = rtp .. sep .. 'lua' .. pathtrail\n"\ " -- Always keep paths from &runtimepath at the start:\n"\ " -- append them here disregarding orig possibly containing one of them.\n"\ " new[#new + 1] = new_path\n"\ " cur_vim_paths[new_path] = true\n"\ " end\n"\ " end\n"\ " end\n"\ " for _, orig_path in ipairs(orig) do\n"\ " -- Handle removing obsolete paths originating from &runtimepath: such\n"\ " -- paths either belong to cur_nvim_paths and were already added above or\n"\ " -- to last_nvim_paths and should not be added at all if corresponding\n"\ " -- entry was removed from &runtimepath list.\n"\ " if not (cur_vim_paths[orig_path] or last_vim_paths[orig_path]) then\n"\ " new[#new + 1] = orig_path\n"\ " end\n"\ " end\n"\ " package[key] = table.concat(new, ';')\n"\ " end\n"\ " last_vim_paths = cur_vim_paths\n"\ "end" #define LUA_VIM_SETUP_VARIABLE_DICTS \ "do\n"\ " local function make_dict_accessor(scope)\n"\ " local mt = {}\n"\ " function mt:__newindex(k, v)\n"\ " return vim._setvar(scope, 0, k, v)\n"\ " end\n"\ " function mt:__index(k)\n"\ " return vim._getvar(scope, 0, k)\n"\ " end\n"\ " return setmetatable({}, mt)\n"\ " end\n"\ " vim.g = make_dict_accessor('g')\n"\ " vim.v = make_dict_accessor('v')\n"\ " vim.b = make_dict_accessor('b')\n"\ " vim.w = make_dict_accessor('w')\n"\ " vim.t = make_dict_accessor('t')\n"\ "end" static int luaopen_vim(lua_State *L) { // set cache table lua_newtable(L); lua_newtable(L); lua_pushstring(L, "v"); lua_setfield(L, -2, "__mode"); lua_setmetatable(L, -2); // cache is weak-valued // print lua_pushcfunction(L, luaV_print); lua_setglobal(L, "print"); // debug.debug lua_getglobal(L, "debug"); lua_pushcfunction(L, luaV_debug); lua_setfield(L, -2, "debug"); lua_pop(L, 1); // free lua_pushlightuserdata(L, (void *) LUAVIM_FREE); lua_pushvalue(L, 1); // cache table lua_pushcclosure(L, luaV_free, 1); lua_rawset(L, LUA_REGISTRYINDEX); // luaeval lua_pushlightuserdata(L, (void *) LUAVIM_LUAEVAL); lua_pushvalue(L, 1); // cache table lua_pushcclosure(L, luaV_luaeval, 1); lua_rawset(L, LUA_REGISTRYINDEX); // setref lua_pushlightuserdata(L, (void *) LUAVIM_SETREF); lua_pushvalue(L, 1); // cache table lua_pushcclosure(L, luaV_setref, 1); lua_rawset(L, LUA_REGISTRYINDEX); // register luaV_newmetatable(L, LUAVIM_LIST); lua_pushvalue(L, 1); luaV_openlib(L, luaV_List_mt, 1); luaV_newmetatable(L, LUAVIM_DICT); lua_pushvalue(L, 1); luaV_openlib(L, luaV_Dict_mt, 1); luaV_newmetatable(L, LUAVIM_BLOB); lua_pushvalue(L, 1); luaV_openlib(L, luaV_Blob_mt, 1); luaV_newmetatable(L, LUAVIM_FUNCREF); lua_pushvalue(L, 1); luaV_openlib(L, luaV_Funcref_mt, 1); luaV_newmetatable(L, LUAVIM_BUFFER); lua_pushvalue(L, 1); // cache table luaV_openlib(L, luaV_Buffer_mt, 1); luaV_newmetatable(L, LUAVIM_WINDOW); lua_pushvalue(L, 1); // cache table luaV_openlib(L, luaV_Window_mt, 1); lua_newtable(L); // vim table lua_pushvalue(L, 1); // cache table luaV_openlib(L, luaV_module, 1); luaV_pushversion(L); lua_setfield(L, -2, "lua_version"); lua_setglobal(L, LUAVIM_NAME); // custom code (void)luaL_dostring(L, LUA_VIM_FN_CODE); (void)luaL_dostring(L, LUA_VIM_UPDATE_PACKAGE_PATHS); (void)luaL_dostring(L, LUA_VIM_SETUP_VARIABLE_DICTS); lua_getglobal(L, "vim"); lua_getfield(L, -1, "_update_package_paths"); if (lua_pcall(L, 0, 0, 0)) luaV_emsg(L); return 0; } static lua_State * luaV_newstate(void) { lua_State *L = luaL_newstate(); luaL_openlibs(L); // core libs lua_pushcfunction(L, luaopen_vim); // vim lua_call(L, 0, 0); return L; } static void luaV_setrange(lua_State *L, int line1, int line2) { lua_getglobal(L, LUAVIM_NAME); lua_pushinteger(L, line1); lua_setfield(L, -2, "firstline"); lua_pushinteger(L, line2); lua_setfield(L, -2, "lastline"); lua_pop(L, 1); // vim table } // ======= Interface ======= static lua_State *L = NULL; static int lua_isopen(void) { return L != NULL; } static int lua_init(void) { if (!lua_isopen()) { #ifdef DYNAMIC_LUA if (!lua_enabled(TRUE)) { emsg(_("Lua library cannot be loaded.")); return FAIL; } #endif L = luaV_newstate(); } return OK; } void lua_end(void) { if (lua_isopen()) { lua_close(L); L = NULL; } } /* * ex commands */ void ex_lua(exarg_T *eap) { char *script = (char *)script_get(eap, eap->arg); if (!eap->skip && lua_init() == OK) { char *s = script != NULL ? script : (char *)eap->arg; luaV_setrange(L, eap->line1, eap->line2); if (luaL_loadbuffer(L, s, strlen(s), LUAVIM_CHUNKNAME) || lua_pcall(L, 0, 0, 0)) luaV_emsg(L); } if (script != NULL) vim_free(script); } void ex_luado(exarg_T *eap) { linenr_T l; const char *s = (const char *) eap->arg; luaL_Buffer b; size_t len; buf_T *was_curbuf = curbuf; if (lua_init() == FAIL) return; if (u_save(eap->line1 - 1, eap->line2 + 1) == FAIL) { emsg(_("cannot save undo information")); return; } luaV_setrange(L, eap->line1, eap->line2); luaL_buffinit(L, &b); luaL_addlstring(&b, "return function(line, linenr) ", 30); // header luaL_addlstring(&b, s, strlen(s)); luaL_addlstring(&b, " end", 4); // footer luaL_pushresult(&b); s = lua_tolstring(L, -1, &len); if (luaL_loadbuffer(L, s, len, LUAVIM_CHUNKNAME)) { luaV_emsg(L); lua_pop(L, 1); // function body return; } lua_call(L, 0, 1); lua_replace(L, -2); // function -> body for (l = eap->line1; l <= eap->line2; l++) { // Check the line number, the command may have deleted lines. if (l > curbuf->b_ml.ml_line_count) break; lua_pushvalue(L, -1); // function luaV_pushline(L, curbuf, l); // current line as arg lua_pushinteger(L, l); // current line number as arg if (lua_pcall(L, 2, 1, 0)) { luaV_emsg(L); break; } // Catch the command switching to another buffer. if (curbuf != was_curbuf) break; if (lua_isstring(L, -1)) // update line? { #ifdef HAVE_SANDBOX luaV_checksandbox(L); #endif ml_replace(l, luaV_toline(L, -1), TRUE); changed_bytes(l, 0); lua_pop(L, 1); // result from luaV_toline } lua_pop(L, 1); // line } lua_pop(L, 1); // function check_cursor(); update_screen(NOT_VALID); } void ex_luafile(exarg_T *eap) { if (lua_init() == FAIL) return; if (!eap->skip) { luaV_setrange(L, eap->line1, eap->line2); if (luaL_loadfile(L, (char *) eap->arg) || lua_pcall(L, 0, 0, 0)) luaV_emsg(L); } } #define luaV_freetype(typ,tname) \ void \ lua_##tname##_free(typ *o) \ { \ if (!lua_isopen()) return; \ luaV_getfield(L, LUAVIM_FREE); \ lua_pushlightuserdata(L, (void *) o); \ lua_call(L, 1, 0); \ } luaV_freetype(buf_T, buffer) luaV_freetype(win_T, window) void do_luaeval(char_u *str, typval_T *arg, typval_T *rettv) { lua_init(); luaV_getfield(L, LUAVIM_LUAEVAL); lua_pushstring(L, (char *) str); lua_pushlightuserdata(L, (void *) arg); lua_pushlightuserdata(L, (void *) rettv); lua_call(L, 3, 0); } int set_ref_in_lua(int copyID) { int aborted = 0; if (lua_isopen()) { luaV_getfield(L, LUAVIM_SETREF); // call the function with 1 arg, getting 1 result back lua_pushinteger(L, copyID); lua_call(L, 1, 1); // get the result aborted = lua_tointeger(L, -1); // pop result off the stack lua_pop(L, 1); } return aborted; } void update_package_paths_in_lua() { if (lua_isopen()) { lua_getglobal(L, "vim"); lua_getfield(L, -1, "_update_package_paths"); if (lua_pcall(L, 0, 0, 0)) luaV_emsg(L); } } /* * Native C function callback */ static int luaV_call_lua_func( int argcount, typval_T *argvars, typval_T *rettv, void *state) { int i; int luaargcount = argcount; luaV_CFuncState *funcstate = (luaV_CFuncState*)state; lua_rawgeti(funcstate->L, LUA_REGISTRYINDEX, funcstate->lua_funcref); if (funcstate->lua_tableref != LUA_NOREF) { // First arg for metatable __call method is a table luaargcount += 1; lua_rawgeti(funcstate->L, LUA_REGISTRYINDEX, funcstate->lua_tableref); } for (i = 0; i < argcount; ++i) luaV_pushtypval(funcstate->L, &argvars[i]); if (lua_pcall(funcstate->L, luaargcount, 1, 0)) { luaV_emsg(funcstate->L); return FCERR_OTHER; } luaV_checktypval(funcstate->L, -1, rettv, "get return value"); return FCERR_NONE; } /* * Free up any lua references held by the func state. */ static void luaV_call_lua_func_free(void *state) { luaV_CFuncState *funcstate = (luaV_CFuncState*)state; luaL_unref(L, LUA_REGISTRYINDEX, funcstate->lua_funcref); funcstate->L = NULL; if (funcstate->lua_tableref != LUA_NOREF) luaL_unref(L, LUA_REGISTRYINDEX, funcstate->lua_tableref); VIM_CLEAR(funcstate); } #endif