variable_analysis_module.cc

#include <sstream>
#include <iostream>
#include "variable_analysis_module.h"

// TODO: Write a comment here.
void VariableAnalysisModule::ParseLine(std::string line, int line_number) {
  ArrayList<std::string> result = Split(line, ' ');
  std::string output;

  // This would follow the format of a variable being defined as: "const <type> <name>;"
  if (result.size() == 3 && result[0] == "const") {
    std::string variable_name = result[2];
    variable_name.pop_back(); // Remove semi-colon from the variable name.
    if (!variable_name.empty() && !ispunct(variable_name[variable_name.size() - 1])) { // Make sure the variable isn't in a function call.
      output = "Found uninitialized variable: " + variable_name;
    } // else, DoNothing(); the variable is within a function call, we don't want it.
  }

  // This would follow the format of a variable being defined as: "<type> <name>;"
  if (result.size() == 2 && result[0] != "return" && result[0] != "#include") {
    std::string variable_name = result[1];
    variable_name.pop_back(); // Remove semi-colon from the variable name.
    if (!variable_name.empty() && !ispunct(variable_name[variable_name.size() - 1])) { // Make sure variable isn't in a function call.
      output = "Found uninitialized variable: " + variable_name;
    } // else, DoNothing(); the variable is within a function call, we don't want it.
  }

  if (!output.empty()) {
    std::cout << "Line #" << line_number << ": " << output << std::endl;
  }
}

// TODO: Write a comment here.
ArrayList<std::string> VariableAnalysisModule::Split(const std::string &line, char deliminator) {
  ArrayList<std::string> tokens;
  std::stringstream stream(line);
  std::string token;
  while (getline(stream, token, deliminator)) {
    if (!token.empty()) tokens.Add(token);
  }
  return tokens;
}