diff --git a/ldo.c b/ldo.c index 8a534041..cadfd650 100644 --- a/ldo.c +++ b/ldo.c @@ -1,5 +1,5 @@ /* -** $Id: ldo.c,v 1.51 1999/11/04 17:22:26 roberto Exp roberto $ +** $Id: ldo.c,v 1.52 1999/11/22 13:12:07 roberto Exp roberto $ ** Stack and Call structure of Lua ** See Copyright Notice in lua.h */ @@ -162,23 +162,21 @@ static StkId callCclosure (lua_State *L, const struct Closure *cl, void luaD_callTM (lua_State *L, const TObject *f, int nParams, int nResults) { luaD_openstack(L, nParams); *(L->stack.top-nParams-1) = *f; - luaD_calln(L, nParams, nResults); + luaD_call(L, L->stack.top-nParams-1, nResults); } /* -** Call a function (C or Lua). The parameters must be on the stack, -** between [top-nArgs,top). The function to be called is right below the -** arguments. -** When returns, the results are on the stack, between [top-nArgs-1,top). +** Call a function (C or Lua). The function to be called is at *func. +** The arguments are on the stack, right after the function. +** When returns, the results are on the stack, starting at the original +** function position. ** The number of results is nResults, unless nResults=MULT_RET. -*/ -void luaD_calln (lua_State *L, int nArgs, int nResults) { +*/ +void luaD_call (lua_State *L, TObject *func, int nResults) { struct Stack *S = &L->stack; /* to optimize */ - StkId base = (S->top-S->stack)-nArgs; - TObject *func = S->stack+base-1; + StkId base = func - S->stack + 1; /* where is first argument */ StkId firstResult; - int i; switch (ttype(func)) { case LUA_T_CPROTO: ttype(func) = LUA_T_CMARK; @@ -213,8 +211,7 @@ void luaD_calln (lua_State *L, int nArgs, int nResults) { luaD_adjusttop(L, firstResult+nResults); /* move results to base-1 (to erase parameters and function) */ base--; - for (i=0; istack+base+i) = *(S->stack+firstResult+i); + luaO_memdown(S->stack+base, S->stack+firstResult, nResults*sizeof(TObject)); S->top -= firstResult-base; } @@ -226,7 +223,7 @@ static void message (lua_State *L, const char *s) { *L->stack.top = *em; incr_top; lua_pushstring(L, s); - luaD_calln(L, 1, 0); + luaD_call(L, L->stack.top-2, 0); } } @@ -256,7 +253,7 @@ int luaD_protectedrun (lua_State *L) { L->errorJmp = &myErrorJmp; if (setjmp(myErrorJmp.b) == 0) { StkId base = L->Cstack.base; - luaD_calln(L, (L->stack.top-L->stack.stack)-base-1, MULT_RET); + luaD_call(L, L->stack.stack+base, MULT_RET); L->Cstack.lua2C = base; /* position of the new results */ L->Cstack.num = (L->stack.top-L->stack.stack) - base; L->Cstack.base = base + L->Cstack.num; /* incorporate results on stack */ diff --git a/ldo.h b/ldo.h index 9adc6aba..d08adbb5 100644 --- a/ldo.h +++ b/ldo.h @@ -1,5 +1,5 @@ /* -** $Id: ldo.h,v 1.9 1999/10/14 19:46:57 roberto Exp roberto $ +** $Id: ldo.h,v 1.10 1999/11/22 13:12:07 roberto Exp roberto $ ** Stack and Call structure of Lua ** See Copyright Notice in lua.h */ @@ -35,7 +35,7 @@ void luaD_adjusttop (lua_State *L, StkId newtop); void luaD_openstack (lua_State *L, int nelems); void luaD_lineHook (lua_State *L, int line); void luaD_callHook (lua_State *L, StkId base, const TProtoFunc *tf, int isreturn); -void luaD_calln (lua_State *L, int nArgs, int nResults); +void luaD_call (lua_State *L, TObject *func, int nResults); void luaD_callTM (lua_State *L, const TObject *f, int nParams, int nResults); int luaD_protectedrun (lua_State *L); void luaD_gcIM (lua_State *L, const TObject *o);