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-rw-r--r--apps/plugins/lua/lfunc.c81
1 files changed, 34 insertions, 47 deletions
diff --git a/apps/plugins/lua/lfunc.c b/apps/plugins/lua/lfunc.c
index 813e88f583..e90e1520ce 100644
--- a/apps/plugins/lua/lfunc.c
+++ b/apps/plugins/lua/lfunc.c
@@ -1,5 +1,5 @@
1/* 1/*
2** $Id: lfunc.c,v 2.12.1.2 2007/12/28 14:58:43 roberto Exp $ 2** $Id: lfunc.c,v 2.30.1.1 2013/04/12 18:48:47 roberto Exp $
3** Auxiliary functions to manipulate prototypes and closures 3** Auxiliary functions to manipulate prototypes and closures
4** See Copyright Notice in lua.h 4** See Copyright Notice in lua.h
5*/ 5*/
@@ -20,30 +20,24 @@
20 20
21 21
22 22
23Closure *luaF_newCclosure (lua_State *L, int nelems, Table *e) { 23Closure *luaF_newCclosure (lua_State *L, int n) {
24 Closure *c = cast(Closure *, luaM_malloc(L, sizeCclosure(nelems))); 24 Closure *c = &luaC_newobj(L, LUA_TCCL, sizeCclosure(n), NULL, 0)->cl;
25 luaC_link(L, obj2gco(c), LUA_TFUNCTION); 25 c->c.nupvalues = cast_byte(n);
26 c->c.isC = 1;
27 c->c.env = e;
28 c->c.nupvalues = cast_byte(nelems);
29 return c; 26 return c;
30} 27}
31 28
32 29
33Closure *luaF_newLclosure (lua_State *L, int nelems, Table *e) { 30Closure *luaF_newLclosure (lua_State *L, int n) {
34 Closure *c = cast(Closure *, luaM_malloc(L, sizeLclosure(nelems))); 31 Closure *c = &luaC_newobj(L, LUA_TLCL, sizeLclosure(n), NULL, 0)->cl;
35 luaC_link(L, obj2gco(c), LUA_TFUNCTION); 32 c->l.p = NULL;
36 c->l.isC = 0; 33 c->l.nupvalues = cast_byte(n);
37 c->l.env = e; 34 while (n--) c->l.upvals[n] = NULL;
38 c->l.nupvalues = cast_byte(nelems);
39 while (nelems--) c->l.upvals[nelems] = NULL;
40 return c; 35 return c;
41} 36}
42 37
43 38
44UpVal *luaF_newupval (lua_State *L) { 39UpVal *luaF_newupval (lua_State *L) {
45 UpVal *uv = luaM_new(L, UpVal); 40 UpVal *uv = &luaC_newobj(L, LUA_TUPVAL, sizeof(UpVal), NULL, 0)->uv;
46 luaC_link(L, obj2gco(uv), LUA_TUPVAL);
47 uv->v = &uv->u.value; 41 uv->v = &uv->u.value;
48 setnilvalue(uv->v); 42 setnilvalue(uv->v);
49 return uv; 43 return uv;
@@ -55,21 +49,20 @@ UpVal *luaF_findupval (lua_State *L, StkId level) {
55 GCObject **pp = &L->openupval; 49 GCObject **pp = &L->openupval;
56 UpVal *p; 50 UpVal *p;
57 UpVal *uv; 51 UpVal *uv;
58 while (*pp != NULL && (p = ngcotouv(*pp))->v >= level) { 52 while (*pp != NULL && (p = gco2uv(*pp))->v >= level) {
53 GCObject *o = obj2gco(p);
59 lua_assert(p->v != &p->u.value); 54 lua_assert(p->v != &p->u.value);
55 lua_assert(!isold(o) || isold(obj2gco(L)));
60 if (p->v == level) { /* found a corresponding upvalue? */ 56 if (p->v == level) { /* found a corresponding upvalue? */
61 if (isdead(g, obj2gco(p))) /* is it dead? */ 57 if (isdead(g, o)) /* is it dead? */
62 changewhite(obj2gco(p)); /* ressurect it */ 58 changewhite(o); /* resurrect it */
63 return p; 59 return p;
64 } 60 }
65 pp = &p->next; 61 pp = &p->next;
66 } 62 }
67 uv = luaM_new(L, UpVal); /* not found: create a new one */ 63 /* not found: create a new one */
68 uv->tt = LUA_TUPVAL; 64 uv = &luaC_newobj(L, LUA_TUPVAL, sizeof(UpVal), pp, 0)->uv;
69 uv->marked = luaC_white(g);
70 uv->v = level; /* current value lives in the stack */ 65 uv->v = level; /* current value lives in the stack */
71 uv->next = *pp; /* chain it in the proper position */
72 *pp = obj2gco(uv);
73 uv->u.l.prev = &g->uvhead; /* double link it in `uvhead' list */ 66 uv->u.l.prev = &g->uvhead; /* double link it in `uvhead' list */
74 uv->u.l.next = g->uvhead.u.l.next; 67 uv->u.l.next = g->uvhead.u.l.next;
75 uv->u.l.next->u.l.prev = uv; 68 uv->u.l.next->u.l.prev = uv;
@@ -96,41 +89,42 @@ void luaF_freeupval (lua_State *L, UpVal *uv) {
96void luaF_close (lua_State *L, StkId level) { 89void luaF_close (lua_State *L, StkId level) {
97 UpVal *uv; 90 UpVal *uv;
98 global_State *g = G(L); 91 global_State *g = G(L);
99 while (L->openupval != NULL && (uv = ngcotouv(L->openupval))->v >= level) { 92 while (L->openupval != NULL && (uv = gco2uv(L->openupval))->v >= level) {
100 GCObject *o = obj2gco(uv); 93 GCObject *o = obj2gco(uv);
101 lua_assert(!isblack(o) && uv->v != &uv->u.value); 94 lua_assert(!isblack(o) && uv->v != &uv->u.value);
102 L->openupval = uv->next; /* remove from `open' list */ 95 L->openupval = uv->next; /* remove from `open' list */
103 if (isdead(g, o)) 96 if (isdead(g, o))
104 luaF_freeupval(L, uv); /* free upvalue */ 97 luaF_freeupval(L, uv); /* free upvalue */
105 else { 98 else {
106 unlinkupval(uv); 99 unlinkupval(uv); /* remove upvalue from 'uvhead' list */
107 setobj(L, &uv->u.value, uv->v); 100 setobj(L, &uv->u.value, uv->v); /* move value to upvalue slot */
108 uv->v = &uv->u.value; /* now current value lives here */ 101 uv->v = &uv->u.value; /* now current value lives here */
109 luaC_linkupval(L, uv); /* link upvalue into `gcroot' list */ 102 gch(o)->next = g->allgc; /* link upvalue into 'allgc' list */
103 g->allgc = o;
104 luaC_checkupvalcolor(g, uv);
110 } 105 }
111 } 106 }
112} 107}
113 108
114 109
115Proto *luaF_newproto (lua_State *L) { 110Proto *luaF_newproto (lua_State *L) {
116 Proto *f = luaM_new(L, Proto); 111 Proto *f = &luaC_newobj(L, LUA_TPROTO, sizeof(Proto), NULL, 0)->p;
117 luaC_link(L, obj2gco(f), LUA_TPROTO);
118 f->k = NULL; 112 f->k = NULL;
119 f->sizek = 0; 113 f->sizek = 0;
120 f->p = NULL; 114 f->p = NULL;
121 f->sizep = 0; 115 f->sizep = 0;
122 f->code = NULL; 116 f->code = NULL;
117 f->cache = NULL;
123 f->sizecode = 0; 118 f->sizecode = 0;
119 f->lineinfo = NULL;
124 f->sizelineinfo = 0; 120 f->sizelineinfo = 0;
125 f->sizeupvalues = 0;
126 f->nups = 0;
127 f->upvalues = NULL; 121 f->upvalues = NULL;
122 f->sizeupvalues = 0;
128 f->numparams = 0; 123 f->numparams = 0;
129 f->is_vararg = 0; 124 f->is_vararg = 0;
130 f->maxstacksize = 0; 125 f->maxstacksize = 0;
131 f->lineinfo = NULL;
132 f->sizelocvars = 0;
133 f->locvars = NULL; 126 f->locvars = NULL;
127 f->sizelocvars = 0;
134 f->linedefined = 0; 128 f->linedefined = 0;
135 f->lastlinedefined = 0; 129 f->lastlinedefined = 0;
136 f->source = NULL; 130 f->source = NULL;
@@ -139,23 +133,16 @@ Proto *luaF_newproto (lua_State *L) {
139 133
140 134
141void luaF_freeproto (lua_State *L, Proto *f) { 135void luaF_freeproto (lua_State *L, Proto *f) {
142 luaM_freearray(L, f->code, f->sizecode, Instruction); 136 luaM_freearray(L, f->code, f->sizecode);
143 luaM_freearray(L, f->p, f->sizep, Proto *); 137 luaM_freearray(L, f->p, f->sizep);
144 luaM_freearray(L, f->k, f->sizek, TValue); 138 luaM_freearray(L, f->k, f->sizek);
145 luaM_freearray(L, f->lineinfo, f->sizelineinfo, int); 139 luaM_freearray(L, f->lineinfo, f->sizelineinfo);
146 luaM_freearray(L, f->locvars, f->sizelocvars, struct LocVar); 140 luaM_freearray(L, f->locvars, f->sizelocvars);
147 luaM_freearray(L, f->upvalues, f->sizeupvalues, TString *); 141 luaM_freearray(L, f->upvalues, f->sizeupvalues);
148 luaM_free(L, f); 142 luaM_free(L, f);
149} 143}
150 144
151 145
152void luaF_freeclosure (lua_State *L, Closure *c) {
153 int size = (c->c.isC) ? sizeCclosure(c->c.nupvalues) :
154 sizeLclosure(c->l.nupvalues);
155 luaM_freemem(L, c, size);
156}
157
158
159/* 146/*
160** Look for n-th local variable at line `line' in function `func'. 147** Look for n-th local variable at line `line' in function `func'.
161** Returns NULL if not found. 148** Returns NULL if not found.