Change iterate_over_symbols to return bool

This changes iterate_over_symbols to return a bool.  This allows it to
be reused in another context in a subsequent patch.

gdb/ChangeLog
2019-09-10  Tom Tromey  <tromey@adacore.com>

	* ada-lang.c (ada_iterate_over_symbols): Return bool.
	* language.h (struct language_defn) <la_iterate_over_symbols>:
	Return bool.
	* symtab.c (iterate_over_symbols): Return bool.
	* symtab.h (iterate_over_symbols): Return bool.

5 files changed, 27 insertions, 13 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 1865eed..e2ebafe 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,13 @@
 2019-09-10  Tom Tromey  <tromey@adacore.com>
 
+	* ada-lang.c (ada_iterate_over_symbols): Return bool.
+	* language.h (struct language_defn) <la_iterate_over_symbols>:
+	Return bool.
+	* symtab.c (iterate_over_symbols): Return bool.
+	* symtab.h (iterate_over_symbols): Return bool.
+
+2019-09-10  Tom Tromey  <tromey@adacore.com>
+
 	* ada-lang.c (aux_add_nonlocal_symbols): Change type.
 	(add_nonlocal_symbols): Update.
 	* dwarf2read.c (dw2_map_matching_symbols): Change type.
diff --git a/gdb/ada-lang.c b/gdb/ada-lang.c
index d677acd..21d40c7 100644
--- a/gdb/ada-lang.c
+++ b/gdb/ada-lang.c
@@ -5740,7 +5740,7 @@ ada_lookup_symbol_list (const char *name, const struct block *block,
 
 /* Implementation of the la_iterate_over_symbols method.  */
 
-static void
+static bool
 ada_iterate_over_symbols
   (const struct block *block, const lookup_name_info &name,
    domain_enum domain,
@@ -5754,8 +5754,10 @@ ada_iterate_over_symbols
   for (i = 0; i < ndefs; ++i)
     {
       if (!callback (&results[i]))
-	break;
+	return false;
     }
+
+  return true;
 }
 
 /* The result is as for ada_lookup_symbol_list with FULL_SEARCH set
diff --git a/gdb/language.h b/gdb/language.h
index 2a100b0..0088e5d 100644
--- a/gdb/language.h
+++ b/gdb/language.h
@@ -407,7 +407,7 @@ struct language_defn
        This field may not be NULL.  If the language does not need any
        special processing here, 'iterate_over_symbols' should be
        used as the definition.  */
-    void (*la_iterate_over_symbols)
+    bool (*la_iterate_over_symbols)
       (const struct block *block, const lookup_name_info &name,
        domain_enum domain,
        gdb::function_view<symbol_found_callback_ftype> callback);
diff --git a/gdb/symtab.c b/gdb/symtab.c
index 88e34de..5f18445 100644
--- a/gdb/symtab.c
+++ b/gdb/symtab.c
@@ -2822,15 +2822,9 @@ basic_lookup_transparent_type (const char *name)
   return (struct type *) 0;
 }
 
-/* Iterate over the symbols named NAME, matching DOMAIN, in BLOCK.
-
-   For each symbol that matches, CALLBACK is called.  The symbol is
-   passed to the callback.
-
-   If CALLBACK returns false, the iteration ends.  Otherwise, the
-   search continues.  */
+/* See symtab.h.  */
 
-void
+bool
 iterate_over_symbols (const struct block *block,
 		      const lookup_name_info &name,
 		      const domain_enum domain,
@@ -2847,9 +2841,10 @@ iterate_over_symbols (const struct block *block,
 	  struct block_symbol block_sym = {sym, block};
 
 	  if (!callback (&block_sym))
-	    return;
+	    return false;
 	}
     }
+  return true;
 }
 
 /* Find the compunit symtab associated with PC and SECTION.
diff --git a/gdb/symtab.h b/gdb/symtab.h
index f38e544..49feea6 100644
--- a/gdb/symtab.h
+++ b/gdb/symtab.h
@@ -2092,7 +2092,16 @@ std::vector<CORE_ADDR> find_pcs_for_symtab_line
 
 typedef bool (symbol_found_callback_ftype) (struct block_symbol *bsym);
 
-void iterate_over_symbols (const struct block *block,
+/* Iterate over the symbols named NAME, matching DOMAIN, in BLOCK.
+
+   For each symbol that matches, CALLBACK is called.  The symbol is
+   passed to the callback.
+
+   If CALLBACK returns false, the iteration ends and this function
+   returns false.  Otherwise, the search continues, and the function
+   eventually returns true.  */
+
+bool iterate_over_symbols (const struct block *block,
 			   const lookup_name_info &name,
 			   const domain_enum domain,
 			   gdb::function_view<symbol_found_callback_ftype> callback);