Initial commit

P1/Calculator.cpp

@@ -0,0 +1,62 @@
+#include "Calculator.h"
+#include "VariableNode.h"
+
+using namespace std;
+
+Calculator::Calculator(int cap)
+{
+    this->data = new VariableLinkedList(cap);
+}
+
+Calculator::~Calculator()
+{
+    delete this->data;
+}
+
+/// @brief Define a new variable
+/// @param name The name of the new variable
+/// @param value The initial value to store in the variable
+/// @return True if the variable was added, false otherwise
+bool Calculator::define(string name, double value)
+{
+    return this->data->insert(name, value);
+}
+
+/// @brief Perform an operation on two variables, and store the result in a thrid
+/// @param v1 The first variable to perform the operation on
+/// @param v2 The second variable to perform the opetation on
+/// @param v3 The variable to store the output result in
+/// @param operation A lambda function to apply on the two variables
+/// @return True if successful, false otherwise
+bool Calculator::performOperation(string v1, string v2, string out, function<double(double, double)> operation)
+{
+    VariableNode *vn1 = this->data->search(v1);
+    VariableNode *vn2 = this->data->search(v2);
+    VariableNode *output = this->data->search(out);
+
+    // If a single one of the variables is not found, we cannot continue.
+    if (vn1 == nullptr || vn2 == nullptr || output == nullptr)
+        return false;
+
+    output->setValue(operation(vn1->getValue(), vn2->getValue()));
+    return true;
+}
+
+/// @brief Remove the given variable from storage
+/// @param name The name of the variable to remove
+/// @return True if the variable was successfully removed, false otherwise
+bool Calculator::remove(string name)
+{
+    return this->data->remove(name);
+}
+
+/// @brief Print out the value of the given variable
+/// @param name The name of the variable to print out
+void Calculator::print(string name)
+{
+    VariableNode *temp = this->data->search(name);
+    if (temp == nullptr)
+        cout << "variable " << name << " not found" << endl;
+    else
+        cout << temp->getValue() << endl;
+}