[bit-page] Add a few operators
diff --git a/src/hb-bit-page.hh b/src/hb-bit-page.hh
index e1826e1..869c678 100644
--- a/src/hb-bit-page.hh
+++ b/src/hb-bit-page.hh
@@ -97,6 +97,7 @@
static inline constexpr unsigned len ()
{ return ARRAY_LENGTH_CONST (v); }
+ operator bool () const { return !is_empty (); }
bool is_empty () const
{
if (has_population ()) return !population;
@@ -218,6 +219,7 @@
return count;
}
+ bool operator == (const hb_bit_page_t &other) const { return is_equal (other); }
bool is_equal (const hb_bit_page_t &other) const
{
for (unsigned i = 0; i < len (); i++)
@@ -225,6 +227,7 @@
return false;
return true;
}
+ bool operator <= (const hb_bit_page_t &larger_page) const { return is_subset (larger_page); }
bool is_subset (const hb_bit_page_t &larger_page) const
{
if (has_population () && larger_page.has_population () &&
