Introduce type::is_array_like and value_to_array

This adds the type::is_array_like method and the value_to_array
function.

The former can be used to see whether a given type is known to be
"array-like".  This is the currently the case for certain
compiler-generated structure types; in particular both the Ada and
Rust compilers do this.

1 files changed, 16 insertions, 0 deletions

diff --git a/gdb/gdbtypes.c b/gdb/gdbtypes.c
index 6b2adc8..c932210 100644
--- a/gdb/gdbtypes.c
+++ b/gdb/gdbtypes.c
@@ -43,6 +43,8 @@
 #include "f-lang.h"
 #include <algorithm>
 #include "gmp-utils.h"
+#include "rust-lang.h"
+#include "ada-lang.h"
 
 /* The value of an invalid conversion badness.  */
 #define INVALID_CONVERSION 100
@@ -5945,6 +5947,20 @@ type::copy_fields (std::vector<struct field> &src)
   size_t size = nfields * sizeof (*this->fields ());
   memcpy (this->fields (), src.data (), size);
 }
+
+bool
+type::is_array_like ()
+{
+  if (code () == TYPE_CODE_ARRAY)
+    return true;
+  if (HAVE_GNAT_AUX_INFO (this))
+    return (ada_is_constrained_packed_array_type (this)
+	    || ada_is_array_descriptor_type (this));
+  if (HAVE_RUST_SPECIFIC (this))
+    return rust_slice_type_p (this);
+  return false;
+}
+
 
 
 static const registry<gdbarch>::key<struct builtin_type> gdbtypes_data;