sbus: Generate constants from interface definitions

This is not strictly necessary, but avoids duplicating data
in mulitple places, and makes the interface definitions
benefit dbus callers (a little).

After applying this commit you may need to 'make clean' as
the codegen has changed.

Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>
Reviewed-by: Sumit Bose <sbose@redhat.com>
Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>
Reviewed-by: Simo Sorce <simo@redhat.com>
(cherry picked from commit c2cc119de8eac712c040b3993f41c967ff2278de)

1 files changed, 21 insertions, 0 deletions

diff --git a/src/sbus/sbus_codegen b/src/sbus/sbus_codegen
index 86aeff094..d2fe5073d 100755
--- a/src/sbus/sbus_codegen
+++ b/src/sbus/sbus_codegen
@@ -295,6 +295,17 @@ def header_vtable(iface, methods):
 
     out("};")
 
+def header_constants(iface):
+    out("")
+    out("/* constants for %s */", iface.name)
+    out("#define %s \"%s\"", iface.c_name().upper(), iface.name)
+    for meth in iface.methods:
+        out("#define %s \"%s\"", meth.fq_c_name().upper(), meth.name)
+    for sig in iface.signals:
+        out("#define %s \"%s\"", sig.fq_c_name().upper(), sig.name)
+    for prop in iface.properties:
+        out("#define %s \"%s\"", prop.fq_c_name().upper(), prop.name)
+
 def generate_header(ifaces, filename):
     basename = os.path.basename(filename)
     guard = "__%s__" % re.sub(r'([^_A-Z0-9])', "_", basename.upper())
@@ -308,6 +319,16 @@ def generate_header(ifaces, filename):
 
     out("")
     out("/* ------------------------------------------------------------------------")
+    out(" * DBus Constants")
+    out(" *")
+    out(" * Various constants of interface and method names mostly for use by clients")
+    out(" */")
+
+    for iface in ifaces:
+        header_constants(iface)
+
+    out("")
+    out("/* ------------------------------------------------------------------------")
     out(" * DBus Vtable handler structures")
     out(" *")
     out(" * These structures are filled in by implementors of the different")