PFW: Fixed bug when entering empty rule

BZ: 24081

When entering an empty rule (composed of spaces), the PFW used to
crash.
Now an error message is displayed : "Syntax error, no rule found".

Change-Id: If3cb505f879d006309add46d5c7c4f47325af563
Reviewed-on: http://android.intel.com:8080/35613
Reviewed-by: Boisnard, FredericX <fredericx.boisnard@intel.com>
Reviewed-by: Denneulin, GuillaumeX <guillaumex.denneulin@intel.com>
Reviewed-by: Centelles, Sylvain <sylvain.centelles@intel.com>
Tested-by: Barthes, FabienX <fabienx.barthes@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>

1 files changed, 14 insertions, 2 deletions

diff --git a/parameter/RuleParser.cpp b/parameter/RuleParser.cpp
index b72556b..0258adf 100644
--- a/parameter/RuleParser.cpp
+++ b/parameter/RuleParser.cpp
@@ -121,8 +121,20 @@ bool CRuleParser::parse(CCompoundRule* pParentRule, string& strError)
             // Go on
             break;
         }
-        case EDone:
-            return true;
+        case EDone: {
+            // If the current state is EDone, check that at least one rule has been found.
+            if (_pRootRule) {
+
+                // At least one rule found
+                return true;
+            } else {
+
+                strError = "Syntax error, no rule found";
+
+                return false;
+            }
+
+        }
         default:
             assert(0);
             return false;