Ada: allow unqualified function names in linespecs

This is the meat, where we replace the old la_symbol_name_compare
language method with the new ada_get_symbol_name_match_p.
It fixes the problem when trying to insert a breakpoint on "+".

gdb/ChangeLog:

        * language.h (symbol_name_match_p_ftype): New typedef.
        (struct language_defn): Replace field la_symbol_name_compare
        by la_get_symbol_name_match_p.
        * ada-lang.c (ada_get_symbol_name_match_p): New function.
        (ada_language_defn): Use it.
        * linespec.c (struct symbol_matcher_data): New type.
        (iterate_name_matcher): Rewrite.
        (iterate_over_all_matching_symtabs): Pass a pointer to
        a symbol_matcher_data struct to expand_symtabs_matching
        instead of just the lookup name.
        * c-lang.c, d-lang.c, jv-lang.c, m2-lang.c, objc-lang.c,
        opencl-lang.c, p-lang.c, language.c: Delete field
        la_symbol_name_compare, and replace by NULL for new field
        la_get_symbol_name_match_p.
        * symfile.h (struct quick_symbol_functions): Update comment.

1 files changed, 17 insertions, 12 deletions

diff --git a/gdb/language.h b/gdb/language.h
index 2ea2dca..7a1bcb7 100644
--- a/gdb/language.h
+++ b/gdb/language.h
@@ -136,6 +136,16 @@ struct language_arch_info
   struct type *bool_type_default;
 };
 
+/* A pointer to a function expected to return nonzero if
+   SYMBOL_SEARCH_NAME matches the given LOOKUP_NAME.
+
+   SYMBOL_SEARCH_NAME should be a symbol's "search" name.
+   LOOKUP_NAME should be the name of an entity after it has been
+   transformed for lookup.  */
+
+typedef int (*symbol_name_match_p_ftype) (const char *symbol_search_name,
+					  const char *lookup_name);
+
 /* Structure tying together assorted information about a language.  */
 
 struct language_defn
@@ -318,19 +328,14 @@ struct language_defn
     void (*la_get_string) (struct value *value, gdb_byte **buffer, int *length,
 			   struct type **chartype, const char **charset);
 
-    /* Compare two symbol names according to language rules.  For
-       instance, in C++, we might want to ignore whitespaces in
-       the symbol name.  Or some case-insensitive language might
-       want to ignore casing during the match.
-
-       Both STR1 and STR2 are expected to be demangled name, except
-       for Ada, where STR1 and STR2 are expected to be encoded names.
-       The latter is because searches are performed using the encoded
-       name in Ada.
-
-       The return value follows the same spirit as strcmp.  */
+    /* Return a pointer to the function that should be used to match
+       a symbol name against LOOKUP_NAME. This is mostly for languages
+       such as Ada where the matching algorithm depends on LOOKUP_NAME.
 
-    int (*la_symbol_name_compare) (const char *str1, const char *str2);
+       This field may be NULL, in which case strcmp_iw will be used
+       to perform the matching.  */
+    symbol_name_match_p_ftype (*la_get_symbol_name_match_p)
+      (const char *lookup_name);
 
     /* Find all symbols in the current program space matching NAME in
        DOMAIN, according to this language's rules.