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#pragma once
// script.hpp - EAthena script frontend, engine, and library.
//
// Copyright © ????-2004 Athena Dev Teams
// Copyright © 2004-2011 The Mana World Development Team
// Copyright © 2011-2014 Ben Longbons <b.r.longbons@gmail.com>
//
// This file is part of The Mana World (Athena server)
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "fwd.hpp"
#include <cstdint>
#include <memory>
#include <vector>
#include "../range/fwd.hpp"
#include "../strings/zstring.hpp"
#include "../generic/fwd.hpp"
#include "../sexpr/variant.hpp"
#include "../mmo/ids.hpp"
namespace tmwa
{
enum class ByteCode : uint8_t;
class ScriptBuffer;
} // namespace tmwa
namespace std
{
template<>
struct default_delete<const tmwa::ScriptBuffer>
{
default_delete() {}
default_delete(default_delete<tmwa::ScriptBuffer>) {}
void operator()(const tmwa::ScriptBuffer *sd);
};
} // namespace std
namespace tmwa
{
struct ScriptPointer
{
const ScriptBuffer *code;
size_t pos;
ScriptPointer()
: code()
, pos()
{}
ScriptPointer(const ScriptBuffer *c, size_t p)
: code(c)
, pos(p)
{}
ByteCode peek() const;
ByteCode pop();
ZString pops();
};
// internal
class SIR
{
uint32_t impl;
SIR(SP v)
: impl(static_cast<uint32_t>(v))
{}
SIR(unsigned v, uint8_t i)
: impl((i << 24) | v)
{}
public:
SIR() : impl() {}
unsigned base() const { return impl & 0x00ffffff; }
uint8_t index() const { return impl >> 24; }
SIR iplus(uint8_t i) const { return SIR(base(), index() + i); }
static SIR from(unsigned v, uint8_t i=0) { return SIR(v, i); }
SP sp() const { return static_cast<SP>(impl); }
static SIR from(SP v) { return SIR(v); }
friend bool operator == (SIR l, SIR r) { return l.impl == r.impl; }
friend bool operator < (SIR l, SIR r) { return l.impl < r.impl; }
};
struct ScriptDataPos
{
int numi;
};
struct ScriptDataInt
{
int numi;
};
struct ScriptDataParam
{
SIR reg;
};
struct ScriptDataStr
{
RString str;
};
struct ScriptDataArg
{
int numi;
};
struct ScriptDataVariable
{
SIR reg;
};
struct ScriptDataRetInfo
{
// Not a ScriptPointer - pos is stored in a separate slot,
// to avoid exploding the struct for everyone.
const ScriptBuffer *script;
};
struct ScriptDataFuncRef
{
int numi;
};
using ScriptDataVariantBase = Variant<
ScriptDataPos,
ScriptDataInt,
ScriptDataParam,
ScriptDataStr,
ScriptDataArg,
ScriptDataVariable,
ScriptDataRetInfo,
ScriptDataFuncRef
>;
struct script_data : ScriptDataVariantBase
{
script_data() = delete;
// TODO see if I can delete the copy ctor/assign instead of defaulting
script_data(script_data&&) = default;
script_data(const script_data&) = default /*delete*/;
script_data& operator = (script_data&&) = default;
script_data& operator = (const script_data&) = default /*delete*/;
script_data(ScriptDataPos v) : ScriptDataVariantBase(std::move(v)) {}
script_data(ScriptDataInt v) : ScriptDataVariantBase(std::move(v)) {}
script_data(ScriptDataParam v) : ScriptDataVariantBase(std::move(v)) {}
script_data(ScriptDataStr v) : ScriptDataVariantBase(std::move(v)) {}
script_data(ScriptDataArg v) : ScriptDataVariantBase(std::move(v)) {}
script_data(ScriptDataVariable v) : ScriptDataVariantBase(std::move(v)) {}
script_data(ScriptDataRetInfo v) : ScriptDataVariantBase(std::move(v)) {}
script_data(ScriptDataFuncRef v) : ScriptDataVariantBase(std::move(v)) {}
};
std::unique_ptr<const ScriptBuffer> parse_script(ZString, int, bool implicit_end);
struct argrec_t
{
ZString name;
union _aru
{
int i;
ZString s;
_aru(int n) : i(n) {}
_aru(ZString z) : s(z) {}
} v;
argrec_t(ZString n, int i) : name(n), v(i) {}
argrec_t(ZString n, ZString z) : name(n), v(z) {}
};
int run_script_l(ScriptPointer, BlockId, BlockId, Slice<argrec_t> args);
int run_script(ScriptPointer, BlockId, BlockId);
extern
Map<ScriptLabel, int> scriptlabel_db;
extern
UPMap<RString, const ScriptBuffer> userfunc_db;
void do_init_script(void);
void do_final_script(void);
extern AString mapreg_txt;
extern int script_errors;
bool read_constdb(ZString filename);
void set_script_var_i(dumb_ptr<map_session_data> sd, VarName var, int e, int val);
void set_script_var_s(dumb_ptr<map_session_data> sd, VarName var, int e, XString val);
int get_script_var_i(dumb_ptr<map_session_data> sd, VarName var, int e);
ZString get_script_var_s(dumb_ptr<map_session_data> sd, VarName var, int e);
} // namespace tmwa
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