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Add a registry for stashing hidden javascript objects from C code.

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This commit is contained in:
Tor Andersson
2014-01-24 16:17:43 +01:00
parent b22dc395c9
commit 3cef8607dc
5 changed files with 66 additions and 3 deletions
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7
js.h
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@@ -79,6 +79,13 @@ void js_loadfile(js_State *J, const char *filename);
void js_call(js_State *J, int n);
void js_construct(js_State *J, int n);
const char *js_ref(js_State *J);
void js_unref(js_State *J, const char *ref);
void js_getregistry(js_State *J, const char *name);
void js_setregistry(js_State *J, const char *name);
void js_delregistry(js_State *J, const char *name);
void js_getglobal(js_State *J, const char *name);
void js_setglobal(js_State *J, const char *name);
void js_defglobal(js_State *J, const char *name, int atts);

1
jsgc.c
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@@ -124,6 +124,7 @@ void js_gc(js_State *J, int report)
jsG_markobject(J, mark, J->TypeError_prototype);
jsG_markobject(J, mark, J->URIError_prototype);
jsG_markobject(J, mark, J->R);
jsG_markobject(J, mark, J->G);
jsG_markstack(J, mark);

6
jsi.h
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@@ -106,8 +106,10 @@ struct js_State
js_Object *TypeError_prototype;
js_Object *URIError_prototype;
js_Object *G;
js_Environment *E;
int nextref; /* for js_ref use */
js_Object *R; /* registry of hidden values */
js_Object *G; /* the global object */
js_Environment *E; /* current environment scope */
/* execution stack */
int top, bot;

53
jsrun.c
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@@ -251,7 +251,58 @@ void js_rot(js_State *J, int n)
STACK[TOP-i] = tmp;
}
/* Global and object property accessors */
/* Registry, global and object property accessors */
void js_getregistry(js_State *J, const char *name)
{
js_Property *ref = jsV_getproperty(J, J->R, name);
if (ref)
js_pushvalue(J, ref->value);
else
js_pushundefined(J);
}
void js_setregistry(js_State *J, const char *name)
{
js_Property *ref = jsV_setproperty(J, J->R, name);
if (ref)
ref->value = js_tovalue(J, -1);
js_pop(J, 1);
}
void js_delregistry(js_State *J, const char *name)
{
// TODO
}
const char *js_ref(js_State *J)
{
const js_Value *v = stackidx(J, -1);
const char *s;
char buf[32];
switch (v->type) {
case JS_TUNDEFINED: s = "_Undefined"; break;
case JS_TNULL: s = "_Null"; break;
case JS_TBOOLEAN:
s = v->u.boolean ? "_True" : "_False";
break;
case JS_TOBJECT:
sprintf(buf, "%p", v->u.object);
s = js_intern(J, buf);
break;
default:
sprintf(buf, "%d", J->nextref++);
s = js_intern(J, buf);
break;
}
js_setregistry(J, s);
return s;
}
void js_unref(js_State *J, const char *ref)
{
js_delregistry(J, ref);
}
void js_getglobal(js_State *J, const char *name)
{

2
jsstate.c
View File

@@ -107,7 +107,9 @@ js_State *js_newstate(void)
J->stack = malloc(JS_STACKSIZE * sizeof *J->stack);
J->gcmark = 1;
J->nextref = 0;
J->R = jsV_newobject(J, JS_COBJECT, NULL);
J->G = jsV_newobject(J, JS_COBJECT, NULL);
J->E = jsR_newenvironment(J, J->G, NULL);