2 files changed, 39 insertions, 0 deletions
diff --git a/src/core/model/Syntax.cpp b/src/core/model/Syntax.cpp
index a97acf7..0e92ef5 100644
--- a/src/core/model/Syntax.cpp
+++ b/src/core/model/Syntax.cpp
@@ -32,6 +32,22 @@ bool TokenDescriptor::isValid() const
 
 /* Class SyntaxDescriptor */
 
+bool operator==(const SyntaxDescriptor &o1, const SyntaxDescriptor &o2)
+{
+	return (o1.depth == o2.depth) && (o1.open == o2.open) &&
+	       (o1.close == o2.close) && (o1.shortForm == o2.shortForm) &&
+	       (o1.descriptor == o2.descriptor);
+}
+
+bool operator<(const SyntaxDescriptor &o1, const SyntaxDescriptor &o2)
+{
+	return (o1.depth < o2.depth) ||
+	       (o1.isFieldDescriptor() && !o2.isFieldDescriptor()) ||
+	       (o1.open < o2.open) || (o1.close < o2.close) ||
+	       (o1.shortForm < o2.shortForm) ||
+	       (o1.descriptor.get() < o2.descriptor.get());
+}
+
 bool SyntaxDescriptor::isAnnotation() const
 {
 	return descriptor->isa(&RttiTypes::AnnotationClass);
diff --git a/src/core/model/Syntax.hpp b/src/core/model/Syntax.hpp
index 97a2995..91b2226 100644
--- a/src/core/model/Syntax.hpp
+++ b/src/core/model/Syntax.hpp
@@ -158,6 +158,29 @@ struct SyntaxDescriptor {
 	}
 
 	/**
+	 * Equality operator, returns true if the two SyntaxDescriptor instances
+	 * are exactly equal.
+	 *
+	 * @param o1 is the first syntax descriptor for the comparison.
+	 * @param o2 is the second syntax descriptor for the comparison.
+	 * @return true if the two syntax descriptors equal, false otherwise.
+	 */
+	friend bool operator==(const SyntaxDescriptor &o1,
+	                       const SyntaxDescriptor &o2);
+
+	/**
+	 * Orders two SyntaxDescriptor instances by their depth, open, close and
+	 * shortForm TokenId and the descriptor pointer. Additionally,
+	 * SyntaxDescriptors belonging to FieldDescriptors are prefered.
+	 *
+	 * @param o1 is the first syntax descriptor for the comparison.
+	 * @param o2 is the second syntax descriptor for the comparison.
+	 * @return true if o1 is should be ordered before o2.
+	 */
+	friend bool operator<(const SyntaxDescriptor &o1,
+	                      const SyntaxDescriptor &o2);
+
+	/**
 	 * Inserts all tokens referenced in this SyntaxDescriptor into the
 	 * given TokenSet. Skips token ids set to Tokens::Empty.
 	 *