OpenAssetTools/src/ZoneCodeGeneratorNew/Parsing/Commands/Impl/CommandsParserValue.h

#pragma once

#include <string>

#include "Parsing/TokenPos.h"
#include "Utils/ClassUtils.h"

class CommandsParserValueType
{
    CommandsParserValueType() = default;
public:
    enum
    {
        FIRST = 0x100,

        // Meta tokens
        INVALID = FIRST,
        END_OF_FILE,

        // Symbol tokens
        SHIFT_LEFT,
        SHIFT_RIGHT,
        EQUALS,
        NOT_EQUAL,
        GREATER_EQUAL,
        LESS_EQUAL,
        LOGICAL_AND,
        LOGICAL_OR,

        // Generic token types
        INTEGER,
        FLOATING_POINT,
        STRING,
        IDENTIFIER,

        // Parser created
        TYPE_NAME,

        // End
        MAX
    };
};

class CommandsParserValue
{
public:
    TokenPos m_pos;
    int m_type;
    union ValueType
    {
        int int_value;
        double double_value;
        std::string* string_value;
    } m_value;

    static CommandsParserValue Invalid(TokenPos pos);
    static CommandsParserValue EndOfFile(TokenPos pos);
    static CommandsParserValue Character(TokenPos pos, char c);
    static CommandsParserValue ShiftLeft(TokenPos pos);
    static CommandsParserValue ShiftRight(TokenPos pos);
    static CommandsParserValue Equals(TokenPos pos);
    static CommandsParserValue NotEqual(TokenPos pos);
    static CommandsParserValue GreaterEqual(TokenPos pos);
    static CommandsParserValue LessEqual(TokenPos pos);
    static CommandsParserValue LogicalAnd(TokenPos pos);
    static CommandsParserValue LogicalOr(TokenPos pos);
    static CommandsParserValue Integer(TokenPos pos, int value);
    static CommandsParserValue FloatingPoint(TokenPos pos, double value);
    static CommandsParserValue String(TokenPos pos, std::string* stringValue);
    static CommandsParserValue Identifier(TokenPos pos, std::string* identifier);
    static CommandsParserValue TypeName(TokenPos pos, std::string* typeName);

private:
    CommandsParserValue(TokenPos pos, int type);

public:
    ~CommandsParserValue();
    CommandsParserValue(const CommandsParserValue& other) = delete;
    CommandsParserValue(CommandsParserValue&& other) noexcept;
    CommandsParserValue& operator=(const CommandsParserValue& other) = delete;
    CommandsParserValue& operator=(CommandsParserValue&& other) noexcept;

    _NODISCARD int IntegerValue() const;
    _NODISCARD double FloatingPointValue() const;
    _NODISCARD std::string& StringValue() const;
    _NODISCARD std::string& IdentifierValue() const;
    _NODISCARD std::string& TypeNameValue() const;
};