Rework hashing, use a more extensible framework similar to n3876 proposal

std::hash specialization is a pain to work with, stop using that, and
just specialize a 'size_t hash_value(const T&)' free function.

1 files changed, 16 insertions, 0 deletions

diff --git a/src/coord.hh b/src/coord.hh
index dbae5001..ed9347a5 100644
--- a/src/coord.hh
+++ b/src/coord.hh
@@ -2,6 +2,7 @@
 #define coord_hh_INCLUDED
 
 #include "units.hh"
+#include "hash.hh"
 
 namespace Kakoune
 {
@@ -92,6 +93,11 @@ struct ByteCoord : LineAndColumn<ByteCoord, LineCount, ByteCount>
         : LineAndColumn(line, column) {}
 };
 
+inline size_t hash_value(const ByteCoord& val)
+{
+    return hash_values(val.line, val.column);
+}
+
 struct CharCoord : LineAndColumn<CharCoord, LineCount, CharCount>
 {
     [[gnu::always_inline]]
@@ -99,6 +105,11 @@ struct CharCoord : LineAndColumn<CharCoord, LineCount, CharCount>
         : LineAndColumn(line, column) {}
 };
 
+inline size_t hash_value(const CharCoord& val)
+{
+    return hash_values(val.line, val.column);
+}
+
 struct ByteCoordAndTarget : ByteCoord
 {
     [[gnu::always_inline]]
@@ -112,6 +123,11 @@ struct ByteCoordAndTarget : ByteCoord
     CharCount target;
 };
 
+inline size_t hash_value(const ByteCoordAndTarget& val)
+{
+    return hash_values(val.line, val.column, val.target);
+}
+
 }
 
 #endif // coord_hh_INCLUDED