data: Parsing functions with ParseFunction for signature comparing

This change switches function and method parsing to use the structure ParseFunction, which holds all important values of
the function. This structure is then used also in call and usage parsing to allow distinction between signatures.

src/lib/data/parser/ParseFunction.h

@@ -0,0 +1,25 @@
+#ifndef PARSE_FUNCTION_H
+#define PARSE_FUNCTION_H
+
+#include <string>
+
+#include "data/parser/ParseTypeUsage.h"
+
+struct ParseFunction
+{
+	ParseFunction(
+		const ParseTypeUsage& returnType,
+		const std::string& fullName,
+		const std::vector<ParseTypeUsage>& parameters,
+		bool isStatic = false,
+		bool isConst = false
+	);
+
+	const ParseTypeUsage returnType;
+	const std::string fullName;
+	const std::vector<ParseTypeUsage> parameters;
+	const bool isStatic;
+	const bool isConst;
+};
+
+#endif // PARSE_FUNCTION_H