//===-- Results.h -----------------------------------------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef __PerfTestDriver_Results_h__
#define __PerfTestDriver_Results_h__

#include "lldb/lldb-forward.h"
#include <map>
#include <string>
#include <vector>

namespace lldb_perf {

class Results {
public:
  class Array;
  class Dictionary;
  class Double;
  class String;
  class Unsigned;

  class Result {
  public:
    enum class Type { Invalid, Array, Dictionary, Double, String, Unsigned };

    Result(Type type, const char *name, const char *description)
        : m_name(), m_description(), m_type(type) {
      if (name && name[0])
        m_name = name;
      if (description && description[0])
        m_description = description;
    }

    virtual ~Result() {}

    virtual void Write(Results &results) = 0;

    Array *GetAsArray() {
      if (m_type == Type::Array)
        return (Array *)this;
      return NULL;
    }
    Dictionary *GetAsDictionary() {
      if (m_type == Type::Dictionary)
        return (Dictionary *)this;
      return NULL;
    }
    Double *GetAsDouble() {
      if (m_type == Type::Double)
        return (Double *)this;
      return NULL;
    }

    String *GetAsString() {
      if (m_type == Type::String)
        return (String *)this;
      return NULL;
    }
    Unsigned *GetAsUnsigned() {
      if (m_type == Type::Unsigned)
        return (Unsigned *)this;
      return NULL;
    }

    const char *GetName() const {
      if (m_name.empty())
        return NULL;
      return m_name.c_str();
    }

    const char *GetDescription() const {
      if (m_description.empty())
        return NULL;
      return m_description.c_str();
    }

    Type GetType() const { return m_type; }

  protected:
    std::string m_name;
    std::string m_description;
    Type m_type;
  };

  typedef std::shared_ptr<Result> ResultSP;

  class Array : public Result {
  public:
    Array(const char *name, const char *description)
        : Result(Type::Array, name, description) {}

    virtual ~Array() {}

    ResultSP Append(const ResultSP &result_sp);

    void ForEach(const std::function<bool(const ResultSP &)> &callback);

    virtual void Write(Results &results) {}

  protected:
    typedef std::vector<ResultSP> collection;
    collection m_array;
  };

  class Dictionary : public Result {
  public:
    Dictionary() : Result(Type::Dictionary, NULL, NULL) {}

    Dictionary(const char *name, const char *description)
        : Result(Type::Dictionary, name, description) {}

    virtual ~Dictionary() {}

    virtual void Write(Results &results) {}

    void ForEach(const std::function<bool(const std::string &,
                                          const ResultSP &)> &callback);

    ResultSP Add(const char *name, const char *description,
                 const ResultSP &result_sp);

    ResultSP AddDouble(const char *name, const char *descriptiorn,
                       double value);

    ResultSP AddUnsigned(const char *name, const char *description,
                         uint64_t value);

    ResultSP AddString(const char *name, const char *description,
                       const char *value);

  protected:
    typedef std::map<std::string, ResultSP> collection;
    collection m_dictionary;
  };

  class String : public Result {
  public:
    String(const char *name, const char *description, const char *value)
        : Result(Type::String, name, description), m_string() {
      if (value && value[0])
        m_string = value;
    }

    virtual ~String() {}

    virtual void Write(Results &results) {}

    const char *GetValue() const {
      return m_string.empty() ? NULL : m_string.c_str();
    }

  protected:
    std::string m_string;
  };

  class Double : public Result {
  public:
    Double(const char *name, const char *description, double value)
        : Result(Type::Double, name, description), m_double(value) {}

    virtual ~Double() {}

    virtual void Write(Results &results) {}

    double GetValue() const { return m_double; }

  protected:
    double m_double;
  };

  class Unsigned : public Result {
  public:
    Unsigned(const char *name, const char *description, uint64_t value)
        : Result(Type::Unsigned, name, description), m_unsigned(value) {}

    virtual ~Unsigned() {}

    virtual void Write(Results &results) {}

    uint64_t GetValue() const { return m_unsigned; }

  protected:
    uint64_t m_unsigned;
  };

  Results() : m_results() {}

  ~Results() {}

  Dictionary &GetDictionary() { return m_results; }

  void Write(const char *path);

protected:
  Dictionary m_results;
};

} // namespace lldb_perf
#endif // #ifndef __PerfTestDriver_Results_h__