[FYI v3 2/8] Make gdb expression debugging handle OP_F90_RANGE

[Tom Tromey <tom@tromey.com>]

print_subexp_standard and dump_subexp_body_standard did not handle
OP_F90_RANGE.  Attempting to dump an expression using this opcode
would fail.

This patch adds support for this opcode to these functions.

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

	* expprint.c: Include f-lang.h.
	(print_subexp_standard, dump_subexp_body_standard): Handle
	OP_F90_RANGE.
---
 gdb/ChangeLog  |  6 ++++++
 gdb/expprint.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 63 insertions(+)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 4b0c44b..6bed450 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,11 @@
 2016-05-17  Tom Tromey  <tom@tromey.com>
 
+	* expprint.c: Include f-lang.h.
+	(print_subexp_standard, dump_subexp_body_standard): Handle
+	OP_F90_RANGE.
+
+2016-05-17  Tom Tromey  <tom@tromey.com>
+
 	* Makefile.in (init.c): Search .y files for initialization
 	functions.
 
diff --git a/gdb/expprint.c b/gdb/expprint.c
index b3337cd..db196a1 100644
--- a/gdb/expprint.c
+++ b/gdb/expprint.c
@@ -29,6 +29,7 @@
 #include "block.h"
 #include "objfiles.h"
 #include "valprint.h"
+#include "f-lang.h"
 
 #include <ctype.h>
 
@@ -559,6 +560,26 @@ print_subexp_standard (struct expression *exp, int *pos,
 	return;
       }
 
+    case OP_F90_RANGE:
+      {
+	enum f90_range_type range_type;
+
+	range_type = (enum f90_range_type)
+	  longest_to_int (exp->elts[pc + 1].longconst);
+	*pos += 2;
+
+	fputs_filtered ("RANGE(", stream);
+	if (range_type == HIGH_BOUND_DEFAULT
+	    || range_type == NONE_BOUND_DEFAULT)
+	  print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
+	fputs_filtered ("..", stream);
+	if (range_type == LOW_BOUND_DEFAULT
+	    || range_type == NONE_BOUND_DEFAULT)
+	  print_subexp (exp, pos, stream, PREC_ABOVE_COMMA);
+	fputs_filtered (")", stream);
+	return;
+      }
+
       /* Default ops */
 
     default:
@@ -1025,6 +1046,42 @@ dump_subexp_body_standard (struct expression *exp,
 	elt += 2;
       }
       break;
+    case OP_F90_RANGE:
+      {
+	enum f90_range_type range_type;
+
+	range_type = (enum f90_range_type)
+	  longest_to_int (exp->elts[elt].longconst);
+	elt += 2;
+
+	switch (range_type)
+	  {
+	  case BOTH_BOUND_DEFAULT:
+	    fputs_filtered ("Range '..'", stream);
+	    break;
+	  case LOW_BOUND_DEFAULT:
+	    fputs_filtered ("Range '..EXP'", stream);
+	    break;
+	  case HIGH_BOUND_DEFAULT:
+	    fputs_filtered ("Range 'EXP..'", stream);
+	    break;
+	  case NONE_BOUND_DEFAULT:
+	    fputs_filtered ("Range 'EXP..EXP'", stream);
+	    break;
+	  default:
+	    fputs_filtered ("Invalid Range!", stream);
+	    break;
+	  }
+
+	if (range_type == HIGH_BOUND_DEFAULT
+	    || range_type == NONE_BOUND_DEFAULT)
+	  elt = dump_subexp (exp, stream, elt);
+	if (range_type == LOW_BOUND_DEFAULT
+	    || range_type == NONE_BOUND_DEFAULT)
+	  elt = dump_subexp (exp, stream, elt);
+      }
+      break;
+
     default:
     case OP_NULL:
     case MULTI_SUBSCRIPT:
-- 
2.5.5