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#include "item.hpp"
// ast/item.cpp - Structure of itemdb
//
// Copyright © 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 "../io/extract.hpp"
#include "../io/line.hpp"
#include "../mmo/extract_enums.hpp"
#include "../poison.hpp"
namespace tmwa
{
namespace ast
{
namespace item
{
using io::respan;
static
void skip_comma_space(io::LineCharReader& lr)
{
io::LineChar c;
if (lr.get(c) && c.ch() == ',')
{
lr.adv();
while (lr.get(c) && c.ch() == ' ')
{
lr.adv();
}
}
}
static
Option<Spanned<RString>> lex_nonscript(io::LineCharReader& lr, bool first)
{
io::LineChar c;
if (first)
{
while (lr.get(c) && c.ch() == '\n')
{
lr.adv();
}
}
if (!lr.get(c))
{
return None;
}
io::LineSpan span;
MString accum;
accum += c.ch();
span.begin = c;
span.end = c;
lr.adv();
if (c.ch() != '/')
first = false;
if (first && lr.get(c) && c.ch() == '/')
{
accum += c.ch();
span.end = c;
lr.adv();
while (lr.get(c) && c.ch() != '\n')
{
accum += c.ch();
span.end = c;
lr.adv();
}
return Some(respan(span, RString(accum)));
}
while (lr.get(c) && c.ch() != ',' && c.ch() != '\n')
{
accum += c.ch();
span.end = c;
lr.adv();
}
skip_comma_space(lr);
return Some(respan(span, RString(accum)));
}
static
Result<ast::script::ScriptBody> lex_script(io::LineCharReader& lr)
{
ast::script::ScriptOptions opt;
opt.implicit_start = true;
opt.implicit_end = true;
opt.one_line = true;
opt.no_event = true;
auto rv = ast::script::parse_script_body(lr, opt);
if (rv.get_success().is_some())
{
skip_comma_space(lr);
}
return rv;
}
#define SPAN_EXTRACT(bitexpr, var) ({ auto bit = bitexpr; if (!extract(bit.data, &var.data)) return Err(bit.span.error_str("failed to extract "_s #var)); var.span = bit.span; })
#define EOL_ERROR(lr) ({ io::LineChar c; lr.get(c) ? Err(c.error_str("unexpected EOL"_s)) : Err("unexpected EOF before unexpected EOL"_s); })
Option<Result<ItemOrComment>> parse_item(io::LineCharReader& lr)
{
Spanned<RString> first = TRY_UNWRAP(lex_nonscript(lr, true), return None);
if (first.data.startswith("//"_s))
{
Comment comment;
comment.comment = first.data;
ItemOrComment rv = std::move(comment);
rv.span = first.span;
return Some(Ok(std::move(rv)));
}
Item item;
SPAN_EXTRACT(first, item.id);
SPAN_EXTRACT(TRY_UNWRAP(lex_nonscript(lr, false), return EOL_ERROR(lr)), item.name);
SPAN_EXTRACT(TRY_UNWRAP(lex_nonscript(lr, false), return EOL_ERROR(lr)), item.type);
SPAN_EXTRACT(TRY_UNWRAP(lex_nonscript(lr, false), return EOL_ERROR(lr)), item.buy_price);
SPAN_EXTRACT(TRY_UNWRAP(lex_nonscript(lr, false), return EOL_ERROR(lr)), item.sell_price);
SPAN_EXTRACT(TRY_UNWRAP(lex_nonscript(lr, false), return EOL_ERROR(lr)), item.weight);
SPAN_EXTRACT(TRY_UNWRAP(lex_nonscript(lr, false), return EOL_ERROR(lr)), item.atk);
SPAN_EXTRACT(TRY_UNWRAP(lex_nonscript(lr, false), return EOL_ERROR(lr)), item.def);
SPAN_EXTRACT(TRY_UNWRAP(lex_nonscript(lr, false), return EOL_ERROR(lr)), item.range);
SPAN_EXTRACT(TRY_UNWRAP(lex_nonscript(lr, false), return EOL_ERROR(lr)), item.magic_bonus);
SPAN_EXTRACT(TRY_UNWRAP(lex_nonscript(lr, false), return EOL_ERROR(lr)), item.slot_unused);
SPAN_EXTRACT(TRY_UNWRAP(lex_nonscript(lr, false), return EOL_ERROR(lr)), item.gender);
SPAN_EXTRACT(TRY_UNWRAP(lex_nonscript(lr, false), return EOL_ERROR(lr)), item.loc);
SPAN_EXTRACT(TRY_UNWRAP(lex_nonscript(lr, false), return EOL_ERROR(lr)), item.wlv);
SPAN_EXTRACT(TRY_UNWRAP(lex_nonscript(lr, false), return EOL_ERROR(lr)), item.elv);
SPAN_EXTRACT(TRY_UNWRAP(lex_nonscript(lr, false), return EOL_ERROR(lr)), item.view);
item.use_script = TRY(lex_script(lr));
item.equip_script = TRY(lex_script(lr));
ItemOrComment rv = std::move(item);
rv.span.begin = item.id.span.begin;
rv.span.end = item.equip_script.span.end;
return Some(Ok(std::move(rv)));
}
} // namespace item
} // namespace ast
} // namespace tmwa
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