From 7c8f7eaa75d53ca642203178fb2c6bbe800bc2ea Mon Sep 17 00:00:00 2001
From: David Malcolm <dmalcolm@redhat.com>
Date: Wed, 20 Jul 2016 14:03:03 +0000
Subject: Enabling work for C++ handling of misspelled identifiers and
 typenames

gcc/c/ChangeLog:
	* c-decl.c (struct edit_distance_traits<cpp_hashnode *>): Move to
	spellcheck-tree.h
	(best_macro_match): Likewise, converting from a typedef to a
	subclass.
	(find_closest_macro_cpp_cb): Move to spellcheck-tree.c.
	(lookup_name_fuzzy): Update for change of best_macro_match to a
	subclass with a ctor that calls cpp_forall_identifiers.

gcc/ChangeLog:
	* diagnostic-show-locus.c (diagnostic_show_locus): If this is the
	same location as last time, don't skip if we have fix-it hints.
	Clarify the skipping logic by converting it from one "if" clause
	to repeated "if" clauses.
	* spellcheck-tree.c: Include "cpplib.h".
	(find_closest_macro_cpp_cb): Move here from c/c-decl.c.
	(best_macro_match::best_macro_match): New constructor.
	* spellcheck-tree.h (struct edit_distance_traits<cpp_hashnode *>):
	Move here from c/c-decl.c.
	(class best_macro_match): Move here from c/c-decl.c, converting
	from a typedef to a subclass, gaining a ctor.

From-SVN: r238522
---
 gcc/spellcheck-tree.h | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'gcc/spellcheck-tree.h')

diff --git a/gcc/spellcheck-tree.h b/gcc/spellcheck-tree.h
index 0d5e253..0e43d14 100644
--- a/gcc/spellcheck-tree.h
+++ b/gcc/spellcheck-tree.h
@@ -48,4 +48,30 @@ struct edit_distance_traits<tree>
   }
 };
 
+/* Specialization of edit_distance_traits for preprocessor macros.  */
+
+template <>
+struct edit_distance_traits<cpp_hashnode *>
+{
+  static size_t get_length (cpp_hashnode *hashnode)
+  {
+    return hashnode->ident.len;
+  }
+
+  static const char *get_string (cpp_hashnode *hashnode)
+  {
+    return (const char *)hashnode->ident.str;
+  }
+};
+
+/* Specialization of best_match<> for finding the closest preprocessor
+   macro to a given identifier.  */
+
+class best_macro_match : public best_match<tree, cpp_hashnode *>
+{
+ public:
+  best_macro_match (tree goal, edit_distance_t best_distance_so_far,
+		    cpp_reader *reader);
+};
+
 #endif  /* GCC_SPELLCHECK_TREE_H  */
-- 
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