Add 'const' to list getters in IProjectReader

Resolves: #416

Author: adazem009

src/internal/iprojectreader.h

@@ -31,10 +31,10 @@ class IProjectReader
         virtual bool loadData(const std::string &data) = 0;
         virtual bool isValid() = 0;
         virtual void clear() = 0;
-        virtual const std::vector<std::shared_ptr<Target>> &targets() = 0;
-        virtual const std::vector<std::shared_ptr<Broadcast>> &broadcasts() = 0;
-        virtual const std::vector<std::shared_ptr<Monitor>> &monitors() = 0;
-        virtual const std::vector<std::string> &extensions() = 0;
+        virtual const std::vector<std::shared_ptr<Target>> &targets() const = 0;
+        virtual const std::vector<std::shared_ptr<Broadcast>> &broadcasts() const = 0;
+        virtual const std::vector<std::shared_ptr<Monitor>> &monitors() const = 0;
+        virtual const std::vector<std::string> &extensions() const = 0;
         virtual const std::string &userAgent() const = 0;
 
     protected:

src/internal/scratch3reader.cpp

@@ -527,22 +527,22 @@ void Scratch3Reader::clear()
     m_extensions.clear();
 }
 
-const std::vector<std::shared_ptr<Target>> &Scratch3Reader::targets()
+const std::vector<std::shared_ptr<Target>> &Scratch3Reader::targets() const
 {
     return m_targets;
 }
 
-const std::vector<std::shared_ptr<Broadcast>> &Scratch3Reader::broadcasts()
+const std::vector<std::shared_ptr<Broadcast>> &Scratch3Reader::broadcasts() const
 {
     return m_broadcasts;
 }
 
-const std::vector<std::shared_ptr<Monitor>> &Scratch3Reader::monitors()
+const std::vector<std::shared_ptr<Monitor>> &Scratch3Reader::monitors() const
 {
     return m_monitors;
 }
 
-const std::vector<std::string> &Scratch3Reader::extensions()
+const std::vector<std::string> &Scratch3Reader::extensions() const
 {
     return m_extensions;
 }

src/internal/scratch3reader.h

@@ -17,10 +17,10 @@ class Scratch3Reader : public IProjectReader
         bool loadData(const std::string &data) override;
         bool isValid() override;
         void clear() override;
-        const std::vector<std::shared_ptr<Target>> &targets() override;
-        const std::vector<std::shared_ptr<Broadcast>> &broadcasts() override;
-        const std::vector<std::shared_ptr<Monitor>> &monitors() override;
-        const std::vector<std::string> &extensions() override;
+        const std::vector<std::shared_ptr<Target>> &targets() const override;
+        const std::vector<std::shared_ptr<Broadcast>> &broadcasts() const override;
+        const std::vector<std::shared_ptr<Monitor>> &monitors() const override;
+        const std::vector<std::string> &extensions() const override;
         const std::string &userAgent() const override;
 
     private: