Program Listing for File Operator.h

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#pragma once

#include <memory>
#include <vector>

namespace URI {
namespace Template {

enum class OperatorType
{
    NONE,
    RESERVED_CHARS,
    FRAGMENT,
    LABEL,
    PATH,
    PATH_PARAMETER,
    QUERY,
    QUERY_CONTINUE
};

class Operator
{
public:
    static const char kNoCharacter;

    virtual ~Operator() = default;

    virtual OperatorType Type() const = 0;
    virtual char Start() const = 0;
    virtual char First() const = 0;
    virtual char Separator() const = 0;
    virtual bool Named() const = 0;
    virtual bool EmptyEq() const = 0;
    virtual bool Reserved() const = 0;
    virtual bool StartExpanded() const = 0;
};

class OpNoop: public Operator
{
public:
    OpNoop() = default;
    virtual ~OpNoop() = default;

    virtual OperatorType Type() const override;

    virtual char Start() const override;

    virtual char First() const override;

    virtual char Separator() const override;

    virtual bool Named() const override;

    virtual bool EmptyEq() const override;

    virtual bool Reserved() const override;

    virtual bool StartExpanded() const override;
};

class OpReservedChars: public OpNoop
{
public:
    OpReservedChars() = default;
    virtual ~OpReservedChars() = default;

    virtual OperatorType Type() const override;

    virtual char Start() const override;

    virtual bool Reserved() const override;
};

class OpFragment: public Operator
{
public:
    OpFragment() = default;
    virtual ~OpFragment() = default;

    virtual OperatorType Type() const override;

    virtual char Start() const override;

    virtual char First() const override;

    virtual char Separator() const override;

    virtual bool Named() const override;

    virtual bool EmptyEq() const override;

    virtual bool Reserved() const override;

    virtual bool StartExpanded() const override;
};

class OpLabel: public Operator
{
public:
    OpLabel() = default;
    virtual ~OpLabel() = default;

    virtual OperatorType Type() const override;

    virtual char Start() const override;

    virtual char First() const override;

    virtual char Separator() const override;

    virtual bool Named() const override;

    virtual bool EmptyEq() const override;

    virtual bool Reserved() const override;

    virtual bool StartExpanded() const override;
};

class OpPath: public Operator
{
public:
    OpPath() = default;
    virtual ~OpPath() = default;

    virtual OperatorType Type() const override;

    virtual char Start() const override;

    virtual char First() const override;

    virtual char Separator() const override;

    virtual bool Named() const override;

    virtual bool EmptyEq() const override;

    virtual bool Reserved() const override;

    virtual bool StartExpanded() const override;
};

class OpPathParam: public Operator
{
public:
    OpPathParam() = default;
    virtual ~OpPathParam() = default;

    virtual OperatorType Type() const override;

    virtual char Start() const override;

    virtual char First() const override;

    virtual char Separator() const override;

    virtual bool Named() const override;

    virtual bool EmptyEq() const override;

    virtual bool Reserved() const override;

    virtual bool StartExpanded() const override;
};

class OpQuery: public Operator
{
public:
    OpQuery() = default;
    virtual ~OpQuery() = default;

    virtual OperatorType Type() const override;

    virtual char Start() const override;

    virtual char First() const override;

    virtual char Separator() const override;

    virtual bool Named() const override;

    virtual bool EmptyEq() const override;

    virtual bool Reserved() const override;

    virtual bool StartExpanded() const override;
};

class OpQueryContinue: public Operator
{
public:
    OpQueryContinue() = default;
    virtual ~OpQueryContinue() = default;

    virtual OperatorType Type() const override;

    virtual char Start() const override;

    virtual char First() const override;

    virtual char Separator() const override;

    virtual bool Named() const override;

    virtual bool EmptyEq() const override;

    virtual bool Reserved() const override;

    virtual bool StartExpanded() const override;
};

inline const std::shared_ptr<Operator> NOOP_OPERATOR = std::make_shared<OpNoop>();
// clang-format off
inline const std::vector<std::shared_ptr<Operator>> KNOWN_OPERATORS = {
    std::make_shared<OpReservedChars>(),
    std::make_shared<OpFragment>(),
    std::make_shared<OpLabel>(),
    std::make_shared<OpPath>(),
    std::make_shared<OpPathParam>(),
    std::make_shared<OpQuery>(),
    std::make_shared<OpQueryContinue>(),
};
// clang-format on

} // namespace Template
} // namespace URI