diff options
Diffstat (limited to 'apps/plugins/lua/lfunc.c')
| -rw-r--r-- | apps/plugins/lua/lfunc.c | 81 |
1 files changed, 47 insertions, 34 deletions
diff --git a/apps/plugins/lua/lfunc.c b/apps/plugins/lua/lfunc.c index e90e152..813e88f 100644 --- a/apps/plugins/lua/lfunc.c +++ b/apps/plugins/lua/lfunc.c @@ -1,5 +1,5 @@ /* -** $Id: lfunc.c,v 2.30.1.1 2013/04/12 18:48:47 roberto Exp $ +** $Id: lfunc.c,v 2.12.1.2 2007/12/28 14:58:43 roberto Exp $ ** Auxiliary functions to manipulate prototypes and closures ** See Copyright Notice in lua.h */ @@ -20,24 +20,30 @@ -Closure *luaF_newCclosure (lua_State *L, int n) { - Closure *c = &luaC_newobj(L, LUA_TCCL, sizeCclosure(n), NULL, 0)->cl; - c->c.nupvalues = cast_byte(n); +Closure *luaF_newCclosure (lua_State *L, int nelems, Table *e) { + Closure *c = cast(Closure *, luaM_malloc(L, sizeCclosure(nelems))); + luaC_link(L, obj2gco(c), LUA_TFUNCTION); + c->c.isC = 1; + c->c.env = e; + c->c.nupvalues = cast_byte(nelems); return c; } -Closure *luaF_newLclosure (lua_State *L, int n) { - Closure *c = &luaC_newobj(L, LUA_TLCL, sizeLclosure(n), NULL, 0)->cl; - c->l.p = NULL; - c->l.nupvalues = cast_byte(n); - while (n--) c->l.upvals[n] = NULL; +Closure *luaF_newLclosure (lua_State *L, int nelems, Table *e) { + Closure *c = cast(Closure *, luaM_malloc(L, sizeLclosure(nelems))); + luaC_link(L, obj2gco(c), LUA_TFUNCTION); + c->l.isC = 0; + c->l.env = e; + c->l.nupvalues = cast_byte(nelems); + while (nelems--) c->l.upvals[nelems] = NULL; return c; } UpVal *luaF_newupval (lua_State *L) { - UpVal *uv = &luaC_newobj(L, LUA_TUPVAL, sizeof(UpVal), NULL, 0)->uv; + UpVal *uv = luaM_new(L, UpVal); + luaC_link(L, obj2gco(uv), LUA_TUPVAL); uv->v = &uv->u.value; setnilvalue(uv->v); return uv; @@ -49,20 +55,21 @@ UpVal *luaF_findupval (lua_State *L, StkId level) { GCObject **pp = &L->openupval; UpVal *p; UpVal *uv; - while (*pp != NULL && (p = gco2uv(*pp))->v >= level) { - GCObject *o = obj2gco(p); + while (*pp != NULL && (p = ngcotouv(*pp))->v >= level) { lua_assert(p->v != &p->u.value); - lua_assert(!isold(o) || isold(obj2gco(L))); if (p->v == level) { /* found a corresponding upvalue? */ - if (isdead(g, o)) /* is it dead? */ - changewhite(o); /* resurrect it */ + if (isdead(g, obj2gco(p))) /* is it dead? */ + changewhite(obj2gco(p)); /* ressurect it */ return p; } pp = &p->next; } - /* not found: create a new one */ - uv = &luaC_newobj(L, LUA_TUPVAL, sizeof(UpVal), pp, 0)->uv; + uv = luaM_new(L, UpVal); /* not found: create a new one */ + uv->tt = LUA_TUPVAL; + uv->marked = luaC_white(g); uv->v = level; /* current value lives in the stack */ + uv->next = *pp; /* chain it in the proper position */ + *pp = obj2gco(uv); uv->u.l.prev = &g->uvhead; /* double link it in `uvhead' list */ uv->u.l.next = g->uvhead.u.l.next; uv->u.l.next->u.l.prev = uv; @@ -89,42 +96,41 @@ void luaF_freeupval (lua_State *L, UpVal *uv) { void luaF_close (lua_State *L, StkId level) { UpVal *uv; global_State *g = G(L); - while (L->openupval != NULL && (uv = gco2uv(L->openupval))->v >= level) { + while (L->openupval != NULL && (uv = ngcotouv(L->openupval))->v >= level) { GCObject *o = obj2gco(uv); lua_assert(!isblack(o) && uv->v != &uv->u.value); L->openupval = uv->next; /* remove from `open' list */ if (isdead(g, o)) luaF_freeupval(L, uv); /* free upvalue */ else { - unlinkupval(uv); /* remove upvalue from 'uvhead' list */ - setobj(L, &uv->u.value, uv->v); /* move value to upvalue slot */ + unlinkupval(uv); + setobj(L, &uv->u.value, uv->v); uv->v = &uv->u.value; /* now current value lives here */ - gch(o)->next = g->allgc; /* link upvalue into 'allgc' list */ - g->allgc = o; - luaC_checkupvalcolor(g, uv); + luaC_linkupval(L, uv); /* link upvalue into `gcroot' list */ } } } Proto *luaF_newproto (lua_State *L) { - Proto *f = &luaC_newobj(L, LUA_TPROTO, sizeof(Proto), NULL, 0)->p; + Proto *f = luaM_new(L, Proto); + luaC_link(L, obj2gco(f), LUA_TPROTO); f->k = NULL; f->sizek = 0; f->p = NULL; f->sizep = 0; f->code = NULL; - f->cache = NULL; f->sizecode = 0; - f->lineinfo = NULL; f->sizelineinfo = 0; - f->upvalues = NULL; f->sizeupvalues = 0; + f->nups = 0; + f->upvalues = NULL; f->numparams = 0; f->is_vararg = 0; f->maxstacksize = 0; - f->locvars = NULL; + f->lineinfo = NULL; f->sizelocvars = 0; + f->locvars = NULL; f->linedefined = 0; f->lastlinedefined = 0; f->source = NULL; @@ -133,16 +139,23 @@ Proto *luaF_newproto (lua_State *L) { void luaF_freeproto (lua_State *L, Proto *f) { - luaM_freearray(L, f->code, f->sizecode); - luaM_freearray(L, f->p, f->sizep); - luaM_freearray(L, f->k, f->sizek); - luaM_freearray(L, f->lineinfo, f->sizelineinfo); - luaM_freearray(L, f->locvars, f->sizelocvars); - luaM_freearray(L, f->upvalues, f->sizeupvalues); + luaM_freearray(L, f->code, f->sizecode, Instruction); + luaM_freearray(L, f->p, f->sizep, Proto *); + luaM_freearray(L, f->k, f->sizek, TValue); + luaM_freearray(L, f->lineinfo, f->sizelineinfo, int); + luaM_freearray(L, f->locvars, f->sizelocvars, struct LocVar); + luaM_freearray(L, f->upvalues, f->sizeupvalues, TString *); luaM_free(L, f); } +void luaF_freeclosure (lua_State *L, Closure *c) { + int size = (c->c.isC) ? sizeCclosure(c->c.nupvalues) : + sizeLclosure(c->l.nupvalues); + luaM_freemem(L, c, size); +} + + /* ** Look for n-th local variable at line `line' in function `func'. ** Returns NULL if not found. |