It now is possible to access global variables, using environment[varname], and to set global variable using environment[varname] = "value"

1 files changed, 193 insertions, 0 deletions

diff --git a/include/global.h b/include/global.h
new file mode 100644
index 0000000..ead2e08
--- /dev/null
+++ b/include/global.h
@@ -0,0 +1,193 @@
+/**
+ *  Global variable
+ *
+ *  A global variable is a value that - once updated - also updates
+ *  the global scope
+ *
+ *  @author Emiel Bruijntjes <emiel.bruijntjes@copernica.com>
+ *  @copyright 2013 Copernica BV
+ */
+
+/**
+ *  Forward definitions
+ */
+struct _zval_struct;
+
+/**
+ *  Namespace
+ */
+namespace Php {
+
+/**
+ *  Class definition
+ */
+class Global : public Value
+{
+public:
+    /**
+     *  No copy constructor
+     *  @param  global
+     */
+    Global(const Global &global) = delete;
+
+    /**
+     *  Move constructor
+     *  @param  global
+     */
+    Global(Global &&global) : Value(std::move(global)), _name(std::move(global._name)), _exists(global._exists) {}
+
+    /**
+     *  Destructor
+     */
+    virtual ~Global() {}
+    
+    /**
+     *  Assignment operator
+     *  @param  global
+     *  @return Global
+     */
+    /*
+    Global &operator=(const Global &global)
+    {
+        // skip self assignment
+        if (&global == this) return *this;
+        
+        // call base
+        Value::operator=(global);
+        
+        // copy name and exists setting
+        _name = global._name;
+        _exists = global._exists;
+        
+        // done
+        return *this;
+    }
+    */
+
+    /**
+     *  Move operator
+     *  @param  global
+     *  @return Global
+     */
+    /*
+    Global &operator=(Global &&global)
+    {
+        // skip self assignment
+        if (&global == this) return *this;
+        
+        // call base
+        Value::operator=(std::move(global));
+        
+        // copy name and exists setting
+        _name = std::move(global._name);
+        _exists = global._exists;
+        
+        // done
+        return *this;
+    }
+    */
+    
+    /**
+     *  Assignment operator
+     *  @param  value
+     *  @return Global
+     */
+    template <typename T>
+    Global &operator=(const T &value)
+    {
+        Value::operator=(value);
+        return update();
+    }
+
+    /**
+     *  Set a certain property
+     *  Calling this method will turn the value into an array
+     *  @param  index       Index of the property to set
+     *  @param  value       Value to set
+     *  @return Value       The value that was set
+     */
+    virtual const Value &set(int index, const Value &value) override
+    {
+        // update current object
+        update();
+        
+        // call base
+        return Value::set(index, value);
+    }
+    
+    /**
+     *  Set a certain property
+     *  Calling this method will turn the value into an array
+     *  @param  key         Key of the property to set
+     *  @param  size        Size of the key
+     *  @param  value       Value to set
+     *  @return Value       The value that was set
+     */
+    virtual const Value &set(const char *key, int size, const Value &value) override
+    {
+        // update current object
+        update();
+        
+        // call base
+        return Value::set(key, size, value);
+    }
+
+
+protected:
+    /**
+     *  Function that is called when the value is updated
+     *  @return Value
+     */
+    Global &update();
+    
+private:
+    /**
+     *  Constructor for non-existing var
+     *  @param  name
+     */
+    Global(const char *name) : Value(), _name(name), _exists(false) {}
+    
+    /**
+     *  Alternative constructor for non-existing var
+     *  @param  name
+     */
+    Global(const std::string &name) : Value(), _name(name), _exists(false) {}
+
+    /**
+     *  Constructor to wrap zval for existing global bar
+     *  @param  name
+     *  @param  val
+     */
+    Global(const char *name, struct _zval_struct *val) : Value(val, true), _name(name), _exists(true) {}
+    
+    /**
+     *  Alternative constructor to wrap zval
+     *  @param  name
+     *  @param  val
+     */
+    Global(const std::string &name, struct _zval_struct *val) : Value(val, true), _name(name), _exists(true) {}
+
+    /**
+     *  Name of the variable
+     *  @var string
+     */
+    std::string _name;
+    
+    /**
+     *  Does it already exist?
+     *  @var bool
+     */
+    bool _exists;
+    
+    /**
+     *  The environment can access the private method from this class
+     */
+    friend class Environment;
+};
+
+/**
+ *  End of namespace
+ */
+}
+
+