From 9acab70815a0f62bdaf2c7f01e588066b818d330 Mon Sep 17 00:00:00 2001
From: Andreas Stöckel <astoecke@techfak.uni-bielefeld.de>
Date: Sat, 14 Feb 2015 22:45:19 +0100
Subject: Fixed isIdentifier and isNamespacedIdentifier, added and used
 isIdentifierOrEmpty for use in Node

---
 src/core/common/Utils.cpp | 13 +++++++++----
 src/core/common/Utils.hpp |  5 +++++
 2 files changed, 14 insertions(+), 4 deletions(-)

(limited to 'src/core/common')

diff --git a/src/core/common/Utils.cpp b/src/core/common/Utils.cpp
index fc8ee00..f8b53c6 100644
--- a/src/core/common/Utils.cpp
+++ b/src/core/common/Utils.cpp
@@ -37,22 +37,27 @@ bool Utils::isIdentifier(const std::string &name)
 		}
 		first = false;
 	}
-	return true;
+	return !first;
 }
 
-bool Utils::isNamespaceIdentifier(const std::string &name)
+bool Utils::isIdentifierOrEmpty(const std::string &name)
+{
+	return name.empty() || isIdentifier(name);
+}
+
+bool Utils::isNamespacedIdentifier(const std::string &name)
 {
 	bool first = true;
 	for (char c : name) {
 		if (first && !isIdentifierStartCharacter(c)) {
 			return false;
 		}
-		if (!first && (!isIdentifierCharacter(c) || c == ':')) {
+		if (!first && (!isIdentifierCharacter(c) && c != ':')) {
 			return false;
 		}
 		first = (c == ':');
 	}
-	return true;
+	return !first;
 }
 
 bool Utils::hasNonWhitepaceChar(const std::string &s)
diff --git a/src/core/common/Utils.hpp b/src/core/common/Utils.hpp
index b5cd178..b5a54fc 100644
--- a/src/core/common/Utils.hpp
+++ b/src/core/common/Utils.hpp
@@ -85,6 +85,11 @@ public:
 	 */
 	static bool isIdentifier(const std::string &name);
 
+	/**
+	 * Returns true if the given string is an identifier or an empty string.
+	 */
+	static bool isIdentifierOrEmpty(const std::string &name);
+
 	/**
 	 * Returns true if the given string is in
 	 * \code{.txt}
-- 
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