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More C++ compilability work: mrb_obj_alloc void* conversions

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One of the biggest set of changes needed to make C++ compile, is that you
can't autoconvert "void*" to a different pointer type without a cast (you
can of course, convert pointers *to* "void*"!)

For the first part, convert the users of "mrb_obj_alloc".  Since it has
to return something, make it RBasic* (that's what mrb_obj_alloc() is
operating on anyway).  This way, even in C you'll get a warning if you
don't cast it.

For places where there are a lot of similar calls to mrb_obj_alloc(),
this can be easily hidden through a macro.  I did this in string.c:
    #define mrb_obj_alloc_string(mrb) ((struct RString *) mrb_obj_alloc((mrb), MRB_TT_STRING, (mrb)->string_class))

I also updated the mrb_object() macro to also return a RBasic* -- my
previous commit changed that from "void*" -> "RObject*", but I figure
it should be consistent with mrb_obj_alloc()
This commit is contained in:
Mitchell Blank Jr
2012-05-20 09:43:14 -07:00
parent ec8f97d2a6
commit 9e336b00e5
14 changed files with 42 additions and 40 deletions
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src/hash.c
+2 -2
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@@ -100,7 +100,7 @@ mrb_hash_new_capa(mrb_state *mrb, size_t capa)
{
struct RHash *h;
h = mrb_obj_alloc(mrb, MRB_TT_HASH, mrb->hash_class);
h = (struct RHash *) mrb_obj_alloc(mrb, MRB_TT_HASH, mrb->hash_class);
h->ht = kh_init(ht, mrb);
kh_resize(ht, h->ht, capa);
h->iv = 0;
@@ -197,7 +197,7 @@ mrb_hash_dup(mrb_state *mrb, mrb_value hash)
khash_t(ht) *h, *ret_h;
khiter_t k, ret_k;
ret = mrb_obj_alloc(mrb, MRB_TT_HASH, mrb->hash_class);
ret = (struct RHash *) mrb_obj_alloc(mrb, MRB_TT_HASH, mrb->hash_class);
ret->ht = kh_init(ht, mrb);
if (!RHASH_EMPTY_P(hash)) {