[OE-core] [PATCH 1/2 V2] oe/utils.py: Add vartrue()

[Robert Yang]

It can be used to simplify code like:
"${@['iffalse', 'iftrue'][var]}"

Signed-off-by: Robert Yang <liezhi.yang at windriver.com>
---
 meta/conf/bitbake.conf | 2 +-
 meta/lib/oe/utils.py   | 7 +++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index faef771..dbadeb3 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -610,7 +610,7 @@ DEBUG_FLAGS ?= "-g -feliminate-unused-debug-types ${DEBUG_PREFIX_MAP}"
 # Disabled until the option works properly -feliminate-dwarf2-dups
 FULL_OPTIMIZATION = "-O2 -pipe ${DEBUG_FLAGS}"
 DEBUG_OPTIMIZATION = "-O -fno-omit-frame-pointer ${DEBUG_FLAGS} -pipe"
-SELECTED_OPTIMIZATION = "${@d.getVar(['FULL_OPTIMIZATION', 'DEBUG_OPTIMIZATION'][d.getVar('DEBUG_BUILD') == '1'])}"
+SELECTED_OPTIMIZATION = "${@d.getVar(oe.utils.vartrue('DEBUG_BUILD', 'DEBUG_OPTIMIZATION', 'FULL_OPTIMIZATION', d))}"
 SELECTED_OPTIMIZATION[vardeps] += "FULL_OPTIMIZATION DEBUG_OPTIMIZATION"
 BUILD_OPTIMIZATION = "-O2 -pipe"
 
diff --git a/meta/lib/oe/utils.py b/meta/lib/oe/utils.py
index f22a6ab..914a6f2 100644
--- a/meta/lib/oe/utils.py
+++ b/meta/lib/oe/utils.py
@@ -464,3 +464,10 @@ class ImageQAFailed(bb.build.FuncFailed):
             msg = msg + ' (%s)' % self.description
 
         return msg
+
+def vartrue(var, iftrue, iffalse, d):
+    import oe.types
+    if oe.types.boolean(d.getVar(var)):
+        return iftrue
+    else:
+        return iffalse
-- 
2.7.4