From f8467f7da8685dbc47187864e5afe130d9c63fff Mon Sep 17 00:00:00 2001
From: Teodor Sigaev <teodor@sigaev.ru>
Date: Thu, 28 Apr 2016 16:39:25 +0300
Subject: [PATCH] Prevent to use magic constants

Use macroses for definition amstrategies/amsupport fields instead of
hardcoded values.

Author: Nikolay Shaplov with addition for contrib/bloom
---
 contrib/bloom/blutils.c              | 4 ++--
 src/backend/access/gin/ginutil.c     | 2 +-
 src/backend/access/gist/gist.c       | 2 +-
 src/backend/access/hash/hash.c       | 4 ++--
 src/backend/access/nbtree/nbtree.c   | 4 ++--
 src/backend/access/spgist/spgutils.c | 2 +-
 src/include/access/hash.h            | 1 +
 src/include/access/nbtree.h          | 1 +
 8 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/contrib/bloom/blutils.c b/contrib/bloom/blutils.c
index 71a93e0cd46..05dbe876143 100644
--- a/contrib/bloom/blutils.c
+++ b/contrib/bloom/blutils.c
@@ -73,8 +73,8 @@ blhandler(PG_FUNCTION_ARGS)
 {
 	IndexAmRoutine *amroutine = makeNode(IndexAmRoutine);
 
-	amroutine->amstrategies = 1;
-	amroutine->amsupport = 1;
+	amroutine->amstrategies = BLOOM_NSTRATEGIES;
+	amroutine->amsupport = BLOOM_NPROC;
 	amroutine->amcanorder = false;
 	amroutine->amcanorderbyop = false;
 	amroutine->amcanbackward = false;
diff --git a/src/backend/access/gin/ginutil.c b/src/backend/access/gin/ginutil.c
index 94502678abb..a2450f4687e 100644
--- a/src/backend/access/gin/ginutil.c
+++ b/src/backend/access/gin/ginutil.c
@@ -35,7 +35,7 @@ ginhandler(PG_FUNCTION_ARGS)
 	IndexAmRoutine *amroutine = makeNode(IndexAmRoutine);
 
 	amroutine->amstrategies = 0;
-	amroutine->amsupport = 6;
+	amroutine->amsupport = GINNProcs;
 	amroutine->amcanorder = false;
 	amroutine->amcanorderbyop = false;
 	amroutine->amcanbackward = false;
diff --git a/src/backend/access/gist/gist.c b/src/backend/access/gist/gist.c
index 996363c2ded..a29088728d2 100644
--- a/src/backend/access/gist/gist.c
+++ b/src/backend/access/gist/gist.c
@@ -57,7 +57,7 @@ gisthandler(PG_FUNCTION_ARGS)
 	IndexAmRoutine *amroutine = makeNode(IndexAmRoutine);
 
 	amroutine->amstrategies = 0;
-	amroutine->amsupport = 9;
+	amroutine->amsupport = GISTNProcs;
 	amroutine->amcanorder = false;
 	amroutine->amcanorderbyop = true;
 	amroutine->amcanbackward = false;
diff --git a/src/backend/access/hash/hash.c b/src/backend/access/hash/hash.c
index 8c89ee7108b..4fececeab8c 100644
--- a/src/backend/access/hash/hash.c
+++ b/src/backend/access/hash/hash.c
@@ -51,8 +51,8 @@ hashhandler(PG_FUNCTION_ARGS)
 {
 	IndexAmRoutine *amroutine = makeNode(IndexAmRoutine);
 
-	amroutine->amstrategies = 1;
-	amroutine->amsupport = 1;
+	amroutine->amstrategies = HTMaxStrategyNumber;
+	amroutine->amsupport = HASHNProcs;
 	amroutine->amcanorder = false;
 	amroutine->amcanorderbyop = false;
 	amroutine->amcanbackward = true;
diff --git a/src/backend/access/nbtree/nbtree.c b/src/backend/access/nbtree/nbtree.c
index bf8ade375d1..013394c5b62 100644
--- a/src/backend/access/nbtree/nbtree.c
+++ b/src/backend/access/nbtree/nbtree.c
@@ -84,8 +84,8 @@ bthandler(PG_FUNCTION_ARGS)
 {
 	IndexAmRoutine *amroutine = makeNode(IndexAmRoutine);
 
-	amroutine->amstrategies = 5;
-	amroutine->amsupport = 2;
+	amroutine->amstrategies = BTMaxStrategyNumber;
+	amroutine->amsupport = BTNProcs;
 	amroutine->amcanorder = true;
 	amroutine->amcanorderbyop = false;
 	amroutine->amcanbackward = true;
diff --git a/src/backend/access/spgist/spgutils.c b/src/backend/access/spgist/spgutils.c
index 201203f91a3..bc679bf75a0 100644
--- a/src/backend/access/spgist/spgutils.c
+++ b/src/backend/access/spgist/spgutils.c
@@ -36,7 +36,7 @@ spghandler(PG_FUNCTION_ARGS)
 	IndexAmRoutine *amroutine = makeNode(IndexAmRoutine);
 
 	amroutine->amstrategies = 0;
-	amroutine->amsupport = 5;
+	amroutine->amsupport = SPGISTNProc;
 	amroutine->amcanorder = false;
 	amroutine->amcanorderbyop = false;
 	amroutine->amcanbackward = false;
diff --git a/src/include/access/hash.h b/src/include/access/hash.h
index 3a683904739..fa3f9b61caa 100644
--- a/src/include/access/hash.h
+++ b/src/include/access/hash.h
@@ -239,6 +239,7 @@ typedef HashMetaPageData *HashMetaPage;
  *	Since we only have one such proc in amproc, it's number 1.
  */
 #define HASHPROC		1
+#define HASHNProcs		1
 
 
 /* public routines */
diff --git a/src/include/access/nbtree.h b/src/include/access/nbtree.h
index ca5034907dd..d9569008d47 100644
--- a/src/include/access/nbtree.h
+++ b/src/include/access/nbtree.h
@@ -454,6 +454,7 @@ typedef struct xl_btree_newroot
 
 #define BTORDER_PROC		1
 #define BTSORTSUPPORT_PROC	2
+#define BTNProcs			2
 
 /*
  *	We need to be able to tell the difference between read and write