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Started a dynamic type checking system.

This commit is contained in:
Pietro Gagliardi 2015-05-17 18:07:48 -04:00
parent 9b2b351c92
commit efe5b952cf
2 changed files with 59 additions and 0 deletions
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53
redo/types.c Normal file
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@ -0,0 +1,53 @@
// 17 may 2015
#include "out/ui.h"
#include "uipriv.h"
struct typeinfo {
const char *name;
uintmax_t parent;
};
static struct ptrArray *types = NULL;
uintmax_t uiRegisterType(const char *name, uintmax_t parent)
{
struct typeinfo *ti;
if (types == NULL) {
types = newPtrArray();
// reserve ID 0
ptrArrayAppend(types, NULL);
}
ti = uiNew(struct typeinfo);
ti->name = name;
ti->parent = parent;
ptrArrayAppend(types, ti);
return types->len - 1;
}
void *uiIsA(void *p, uintmax_t id)
{
uiTyped *t;
struct typeinfo *ti;
uintmax_t compareTo;
if (id == 0 || id >= types->len)
complain("invalid type ID given to uiIsA()");
t = (uiTyped *) p;
compareTo = t->Type;
for (;;) {
if (compareTo == 0 || compareTo >= types->len)
complain("invalid type ID in uiIsA()", t);
if (compareTo == id)
return t;
ti = ptrArrayIndex(types, struct typeinfo *, t->Type);
if (ti->parent == 0)
break;
compareTo = ti->parent;
}
ti = ptrArrayIndex(types, struct typeInfo *, t->Type);
complain("object %p not a %s in uiIsA()", t, ti->name);
return NULL; // make compiler happy
}
// TODO free type info

6
redo/ui.idl
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@ -28,6 +28,12 @@ func OnShouldQuit(f *func(data *void) int, data *void);
func FreeText(text *char);
func RegisterType(name *const char, parent uintmax_t);
func IsA(p *void, type uintmax_t);
struct uiTyped {
field Type uintmax_t;
};
raw "typedef struct uiSizingSys uiSizingSys;";
struct Sizing {