swiftToJava.js

function convertSwiftToJava(swiftCode) {
  var swiftLines = swiftCode.split("\n");
  var javaLines = [];
  for (i = 0; i < swiftLines.length; i++) {
    var swiftLine = swiftLines[i].trim();
    var javaLine;
    if (swiftLine.startsWith("static let ")) {
      javaLine = convertSwiftConstantDeclarationToJava(swiftLine);
    }
    else if (swiftLine.startsWith("//")) {
      javaLine = swiftLine;
    }
    else if (swiftLine.length == 0) {
      javaLine = swiftLine;
    }
    else {
      javaLine = "//TODO: ".concat(swiftLine);
    }
    javaLines.push(javaLine);
  }
  return javaCode = javaLines.join("\n");
}

function convertSwiftConstantDeclarationToJava(swiftStatement) {

  var success = true;
  var javaStatement;

  if (swiftStatement.startsWith("static let ")) {

    var remainingSwiftStatement = swiftStatement;
    var javaDeclarationStart;

    javaDeclarationStart = "private static final";
    remainingSwiftStatement = remainingSwiftStatement.substring("static let ".length);

    var variableNameAndValue = remainingSwiftStatement.split("=");
    var variableNameAndType = variableNameAndValue[0].split(":");
    var variableName = variableNameAndType[0].trim();
    var variableValue = variableNameAndValue[1].trim();
    var variableSwiftType = "";
    if (variableNameAndType.length > 1) {
      variableSwiftType = variableNameAndType[1].trim();
    }
    else {
      if (variableValue.startsWith("\"")) {
        variableSwiftType = "String";
      }
      else {
        success = false;
      }
    }

    javaStatement = javaDeclarationStart
      .concat(" ")
      .concat(variableSwiftType)
      .concat(" ")
      .concat(variableName)
      .concat(" = ")
      .concat(variableValue)
      .concat(";");
  }
  else {
    success = false;
  }

  if (success) {
    return javaStatement;
  }
  else {
    return "//TODO: ".concat(swiftStatement);
  }
}

function addSemicollonIfMissing(text) {

  var updatedStatement = text;
  if (updatedStatement.slice(-1) != ';') {
    updatedStatement = updatedStatement.concat(";");
  }
  return updatedStatement;
}