2 files changed, 117 insertions, 0 deletions
diff --git a/node/variablenode.cpp b/node/variablenode.cpp
new file mode 100644
index 0000000..aa42492
--- /dev/null
+++ b/node/variablenode.cpp
@@ -0,0 +1,84 @@
+#include "variablenode.h"
+
+VariableNode::VariableNode()
+{
+
+}
+
+void VariableNode::run(ExecutionNode *previous)
+{
+    m_previousNode = previous;
+
+    if(m_index<0)
+    {
+      m_errors.insert(INVALID_INDEX,QObject::tr("Invalid index must be greater than 0 :%1").arg(m_index));
+      return;
+    }
+
+    if(m_data.size()>m_index)
+    {
+      auto value= m_data[m_index];
+      m_result = value->getResult();
+      if(nullptr!=m_nextNode)
+      {
+          m_nextNode->run(this);
+      }
+    }
+    else
+    {
+      m_errors.insert(NO_VARIBALE,QObject::tr("No variable at index:%1").arg(m_index));
+    }
+}
+
+QString VariableNode::toString(bool withLabel) const
+{
+    if(withLabel)
+    {
+        return QString("%1 [label=\"VariableNode index: %2\"]").arg(m_id).arg(m_index);
+    }
+    else
+    {
+        return m_id;
+    }
+}
+
+qint64 VariableNode::getPriority() const
+{
+    qint64 priority=0;
+    if(nullptr!=m_nextNode)
+    {
+        priority = m_nextNode->getPriority();
+    }
+    return priority;
+}
+
+ExecutionNode *VariableNode::getCopy() const
+{
+  VariableNode* node = new VariableNode();
+  node->setIndex(m_index);
+  if(nullptr!=m_nextNode)
+  {
+      node->setNextNode(m_nextNode->getCopy());
+  }
+  return node;
+}
+
+qint64 VariableNode::getIndex() const
+{
+  return m_index;
+}
+
+void VariableNode::setIndex(qint64 index)
+{
+  m_index = index;
+}
+
+std::vector<ExecutionNode *> VariableNode::getData() const
+{
+  return m_data;
+}
+
+void VariableNode::setData(const std::vector<ExecutionNode *> &data)
+{
+  m_data = data;
+}
diff --git a/node/variablenode.h b/node/variablenode.h
new file mode 100644
index 0000000..9173ae3
--- /dev/null
+++ b/node/variablenode.h
@@ -0,0 +1,33 @@
+#ifndef VARIABLENODE_H
+#define VARIABLENODE_H
+
+#include "node/executionnode.h"
+
+/**
+ * @brief The VariableNode class is an ExecutionNode. It is dedicated to retrive
+ *  variable value from other starting node.
+ */
+class VariableNode : public ExecutionNode
+{
+public:
+    VariableNode();
+    void run(ExecutionNode* previous);
+    virtual QString toString(bool withLabel)const;
+    virtual qint64 getPriority() const;
+    /**
+     * @brief getCopy
+     * @return
+     */
+    virtual ExecutionNode *getCopy() const;
+    qint64 getIndex() const;
+    void setIndex(qint64 index);
+
+    std::vector<ExecutionNode *> getData() const;
+    void setData(const std::vector<ExecutionNode *> &data);
+
+private:
+    qint64 m_index;
+    std::vector<ExecutionNode*> m_data;
+};
+
+#endif // VARIABLENODE_H