From da663f83ef19ed32b37aa466de80224c94a22193 Mon Sep 17 00:00:00 2001
From: David Lamparter <equinox@opensourcerouting.org>
Date: Tue, 19 Jul 2016 15:21:05 +0200
Subject: [PATCH] compiler: add annotation to enable field get/set

Generating per-field getters/setters adds a lot of functions; this makes
them switchable with an annotation in the source schema.
---
 compiler/c.capnp    | 7 ++++++-
 compiler/capnpc-c.c | 9 +++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/compiler/c.capnp b/compiler/c.capnp
index f244105..5de7e73 100644
--- a/compiler/c.capnp
+++ b/compiler/c.capnp
@@ -21,6 +21,7 @@
 
 @0xc0183dd65ffef0f3;
 
+annotation nameinfix @0x85a8d86d736ba637 (file): Text;
 # add an infix (middle insert) for output file names
 #
 # "make" generally has implicit rules for compiling "foo.c" => "foo".  This
@@ -29,4 +30,8 @@
 # before the ".c", so the filename becomes "foo-gen.c"
 #
 # ("foo" is really "foo.capnp", so it's foo.capnp-gen.c)
-annotation nameinfix @0x85a8d86d736ba637 (file): Text;
+
+annotation fieldgetset @0xf72bc690355d66de (file): Void;
+# generate getter & setter functions for accessing fields
+#
+# allows grabbing/putting values without de-/encoding the entire struct.
diff --git a/compiler/capnpc-c.c b/compiler/capnpc-c.c
index 14d5130..209a4f8 100644
--- a/compiler/capnpc-c.c
+++ b/compiler/capnpc-c.c
@@ -46,6 +46,8 @@ static struct capn_segment g_valseg;
 static int g_valc;
 static int g_val0used, g_nullused;
 
+static int g_fieldgetset = 0;
+
 static struct capn_tree *g_node_tree;
 
 static struct node *find_node_mayfail(uint64_t id) {
@@ -908,6 +910,10 @@ static void define_group(struct strings *s, struct node *n, const char *group_na
 	for (f = n->fields; f < n->fields + flen && !in_union(f); f++) {
 		define_field(s, f);
 
+		if (!g_fieldgetset) {
+			continue;
+		}
+
 		if ((n->n.which == Node__struct && n->n._struct.isGroup)) {
 			// Don't emit in-place getters and setters for groups because they
 			// are defined as anonymous structs inside their parent struct.
@@ -1280,6 +1286,9 @@ int main() {
 				}
 				nameinfix = v.text.str ? v.text.str : "";
 				break;
+			case 0xf72bc690355d66deUL:	/* $C::fieldgetset */
+				g_fieldgetset = 1;
+				break;
 			}
 		}
 		if (!nameinfix)