Add array start and end strings to generic_val_print_decorations

For Rust value-printing, I wanted to use generic_val_print_array, but
I also wanted to control the starting and ending strings.

This patch adds new strings to generic_val_print_decorations, updates
generic_val_print_array to use them, and updates all the existing
instances of generic_val_print_decorations.

2016-05-17  Tom Tromey  <tom@tromey.com>

	* valprint.h (struct generic_val_print_array) <array_start,
	array_end>: New fields.
	* valprint.c (generic_val_print_array): Add "decorations"
	parameter.  Use "array_start", "array_end".
	(generic_val_print) <TYPE_CODE_ARRAY>: Update.
	* p-valprint.c (p_decorations): Update.
	* m2-valprint.c (m2_decorations): Update.
	* f-valprint.c (f_decorations): Update.
	* c-valprint.c (c_decorations): Update.

1 files changed, 4 insertions, 0 deletions

diff --git a/gdb/valprint.h b/gdb/valprint.h
index 1a83cb5..451b5fe 100644
--- a/gdb/valprint.h
+++ b/gdb/valprint.h
@@ -186,6 +186,10 @@ struct generic_val_print_decorations
   /* What to print when we see TYPE_CODE_VOID.  */
 
   const char *void_name;
+
+  /* Array start and end strings.  */
+  const char *array_start;
+  const char *array_end;
 };