mirror of
https://github.com/love2d/love.git
synced 2026-08-12 08:30:56 +02:00
Alex Szpakowski
120 lines
2.5 KiB
C++
120 lines
2.5 KiB
C++
/**
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* Copyright (c) 2006-2016 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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#ifndef LOVE_VARIANT_H
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#define LOVE_VARIANT_H
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#include "common/runtime.h"
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#include "common/Object.h"
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#include "common/int.h"
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#include <cstring>
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#include <vector>
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namespace love
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{
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class Variant
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{
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public:
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Variant();
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Variant(bool boolean);
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Variant(double number);
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Variant(const char *string, size_t len);
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Variant(void *userdata);
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Variant(love::Type udatatype, void *userdata);
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Variant(std::vector<std::pair<Variant, Variant>> *table);
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Variant(const Variant &v);
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~Variant();
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Variant &operator = (const Variant &v);
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static bool fromLua(lua_State *L, int n, Variant *v, bool allowTables = true);
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void toLua(lua_State *L) const;
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private:
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class SharedString : public love::Object
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{
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public:
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SharedString(const char *string, size_t len)
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: len(len)
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{
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str = new char[len+1];
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memcpy(str, string, len);
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}
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virtual ~SharedString() { delete[] str; }
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char *str;
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size_t len;
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};
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class SharedTable : public love::Object
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{
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public:
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SharedTable(std::vector<std::pair<Variant, Variant>> *table)
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: table(table)
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{
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}
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virtual ~SharedTable() { delete table; }
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std::vector<std::pair<Variant, Variant>> *table;
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};
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enum Type
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{
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UNKNOWN = 0,
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BOOLEAN,
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NUMBER,
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STRING,
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SMALLSTRING,
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LUSERDATA,
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FUSERDATA,
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NIL,
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TABLE
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} type;
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static const int MAX_SMALL_STRING_LENGTH = 15;
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union Data
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{
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bool boolean;
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double number;
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SharedString *string;
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void *userdata;
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SharedTable *table;
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struct
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{
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char str[MAX_SMALL_STRING_LENGTH];
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uint8 len;
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} smallstring;
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} data;
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love::Type udatatype;
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}; // Variant
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} // love
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#endif // LOVE_VARIANT_H
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