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/ParserClient.cpp

@@ -2,6 +2,7 @@
 
 #include <sstream>
 
+#include "data/parser/ParseFunction.h"
 #include "data/parser/ParseLocation.h"
 #include "data/parser/ParseTypeUsage.h"
 #include "data/parser/ParseVariable.h"
@@ -103,26 +104,16 @@ std::string ParserClient::parameterStr(const std::vector<ParseTypeUsage> paramet
 	return str + ")";
 }
 
-std::string ParserClient::functionStr(
-	const DataType& returnType,
-	const std::string& fullName,
-	const std::vector<ParseTypeUsage>& parameters,
-	bool isConst
-){
-	return addConstPrefix(
-		returnType.getFullTypeName() + " " + fullName + parameterStr(parameters),
-		isConst,
-		false
-	);
+std::string ParserClient::functionStr(const ParseFunction& function)
+{
+	std::string str =
+		function.returnType.dataType.getFullTypeName() + " " + function.fullName + parameterStr(function.parameters);
+	return addConstPrefix(addStaticPrefix(str, function.isStatic), function.isConst, false);
 }
 
-std::string ParserClient::functionSignatureStr(
-	const DataType& returnType,
-	const std::string& fullName,
-	const std::vector<ParseTypeUsage>& parameters,
-	bool isConst
-){
-	return addConstPrefix(fullName + parameterStr(parameters), isConst, false);
+std::string ParserClient::functionSignatureStr(const ParseFunction& function)
+{
+	return addConstPrefix(function.fullName + parameterStr(function.parameters), function.isConst, false);
 }
 
 ParserClient::ParserClient()