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authorRoberto Ierusalimschy <roberto@inf.puc-rio.br>2003-02-24 13:50:41 -0300
committerRoberto Ierusalimschy <roberto@inf.puc-rio.br>2003-02-24 13:50:41 -0300
commit07e210e6555b9930edc2f2fb21220f6f6769f110 (patch)
tree0acd48637a772ddda5a5c89b51dc26e415ba9dd6
parentfeb724c12232528045fcc0672407a643f8588685 (diff)
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`require' returns value returned by package
-rw-r--r--lbaselib.c17
1 files changed, 11 insertions, 6 deletions
diff --git a/lbaselib.c b/lbaselib.c
index 7c18548d..dac9fb23 100644
--- a/lbaselib.c
+++ b/lbaselib.c
@@ -1,5 +1,5 @@
1/* 1/*
2** $Id: lbaselib.c,v 1.120 2003/02/18 16:02:13 roberto Exp roberto $ 2** $Id: lbaselib.c,v 1.121 2003/02/18 16:13:15 roberto Exp roberto $
3** Basic library 3** Basic library
4** See Copyright Notice in lua.h 4** See Copyright Notice in lua.h
5*/ 5*/
@@ -454,8 +454,8 @@ static int luaB_require (lua_State *L) {
454 path = getpath(L); 454 path = getpath(L);
455 lua_pushvalue(L, 1); /* check package's name in book-keeping table */ 455 lua_pushvalue(L, 1); /* check package's name in book-keeping table */
456 lua_rawget(L, 2); 456 lua_rawget(L, 2);
457 if (!lua_isnil(L, -1)) /* is it there? */ 457 if (lua_toboolean(L, -1)) /* is it there? */
458 return 0; /* package is already loaded */ 458 return 1; /* package is already loaded; return its result */
459 else { /* must load it */ 459 else { /* must load it */
460 while (status == LUA_ERRFILE) { 460 while (status == LUA_ERRFILE) {
461 lua_settop(L, 3); /* reset stack position */ 461 lua_settop(L, 3); /* reset stack position */
@@ -470,12 +470,17 @@ static int luaB_require (lua_State *L) {
470 lua_insert(L, -2); /* put it below function */ 470 lua_insert(L, -2); /* put it below function */
471 lua_pushvalue(L, 1); 471 lua_pushvalue(L, 1);
472 lua_setglobal(L, "_REQUIREDNAME"); /* set new name */ 472 lua_setglobal(L, "_REQUIREDNAME"); /* set new name */
473 lua_call(L, 0, 0); /* run loaded module */ 473 lua_call(L, 0, 1); /* run loaded module */
474 lua_insert(L, -2); /* put result below previous name */
474 lua_setglobal(L, "_REQUIREDNAME"); /* reset to previous name */ 475 lua_setglobal(L, "_REQUIREDNAME"); /* reset to previous name */
476 if (lua_isnil(L, -1)) { /* no/nil return? */
477 lua_pushboolean(L, 1);
478 lua_replace(L, -2); /* replace to true */
479 }
475 lua_pushvalue(L, 1); 480 lua_pushvalue(L, 1);
476 lua_pushboolean(L, 1); 481 lua_pushvalue(L, -2);
477 lua_rawset(L, 2); /* mark it as loaded */ 482 lua_rawset(L, 2); /* mark it as loaded */
478 return 0; 483 return 1; /* return value */
479 } 484 }
480 case LUA_ERRFILE: { /* file not found */ 485 case LUA_ERRFILE: { /* file not found */
481 return luaL_error(L, "could not load package `%s' from path `%s'", 486 return luaL_error(L, "could not load package `%s' from path `%s'",