Const modifier to table get and some array operations

include/array.h

@@ -1,6 +1,6 @@
 /**
  *  AMQP field array
- * 
+ *
  *  @copyright 2014 Copernica BV
  */
 
@@ -20,7 +20,7 @@ private:
      *  @typedef
      */
     typedef std::vector<std::shared_ptr<Field>> FieldArray;
-    
+
     /**
      *  The actual fields
      *  @var FieldArray
@@ -30,7 +30,7 @@ private:
 public:
     /**
      *  Constructor to construct an array from a received frame
-     * 
+     *
      *  @param  frame   received frame
      */
     Array(ReceivedFrame &frame);
@@ -99,6 +99,25 @@ public:
      */
     const Field &get(uint8_t index);
 
+    /**
+     *  Get number of elements on this array
+     *
+     *  @return array size
+     */
+    uint32_t count() const;
+
+    /**
+     * Remove last element from array
+     */
+    void pop_back();
+
+    /**
+     * Add field to end of array
+     *
+     * @param value
+     */
+    void push_back(const Field &value);
+
     /**
      *  Get a field
      *
@@ -111,7 +130,7 @@ public:
     }
 
     /**
-     *  Write encoded payload to the given buffer. 
+     *  Write encoded payload to the given buffer.
      *  @param  buffer
      */
     virtual void fill(OutBuffer& buffer) const override;

include/table.h

@@ -109,7 +109,7 @@ public:
      *  @param  name    field name
      *  @return         the field value
      */
-    const Field &get(const std::string &name);
+    const Field &get(const std::string &name) const;
 
     /**
      *  Get a field

src/array.cpp

@@ -1,8 +1,8 @@
 /**
  *  Array.cpp
- * 
+ *
  *  Implementation of an array
- * 
+ *
  */
 #include "includes.h"
 
@@ -23,7 +23,7 @@ Array::Array(ReceivedFrame &frame)
     {
         // one byte less for the field type
         charsToRead -= 1;
-        
+
         // read the field type and construct the field
         Field *field = Field::decode(frame);
         if (!field) continue;
@@ -62,7 +62,7 @@ const Field &Array::get(uint8_t index)
 {
     // used if index does not exist
     static ShortString empty;
-    
+
     // check whether we have that many elements
     if (index >= _fields.size()) return empty;
 
@@ -70,6 +70,21 @@ const Field &Array::get(uint8_t index)
     return *_fields[index];
 }
 
+uint32_t Array::count() const
+{
+  return _fields.size();
+}
+
+void Array::pop_back()
+{
+    _fields.pop_back();
+}
+
+void Array::push_back(const Field& value)
+{
+    _fields.push_back(std::shared_ptr<Field>(value.clone()));
+}
+
 /**
  *  Get the size this field will take when
  *  encoded in the AMQP wire-frame format
@@ -92,7 +107,7 @@ size_t Array::size() const
 }
 
 /**
- *  Write encoded payload to the given buffer. 
+ *  Write encoded payload to the given buffer.
  */
 void Array::fill(OutBuffer& buffer) const
 {

src/table.cpp

@@ -97,7 +97,7 @@ Table &Table::operator=(Table &&table)
  *  @param  name    field name
  *  @return         the field value
  */
-const Field &Table::get(const std::string &name)
+const Field &Table::get(const std::string &name) const
 {
     // we need an empty string
     static ShortString empty;