mirror of
https://github.com/matrix-construct/construct
synced 2024-09-06 08:45:20 +02:00
311 lines
6 KiB
C++
311 lines
6 KiB
C++
/*
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* Copyright (C) 2016 Charybdis Development Team
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* Copyright (C) 2016 Jason Volk <jason@zemos.net>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice is present in all copies.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#define HAVE_IRCD_JS_VALUE_H
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namespace ircd {
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namespace js {
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// Fundamental string utils. This is placed here instead of string.h so
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// `struct value` can make direct conversions without depending on struct string type
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size_t native_size(const JSString *const &);
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size_t native(const JSString *const &, char *const &buf, const size_t &max);
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std::string native(const JSString *const &);
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struct value
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:JS::Rooted<JS::Value>
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{
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explicit operator JSType() const;
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explicit operator std::string() const;
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explicit operator double() const;
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explicit operator uint64_t() const;
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explicit operator int64_t() const;
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explicit operator uint32_t() const;
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explicit operator int32_t() const;
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explicit operator uint16_t() const;
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explicit operator bool() const;
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value(const char *const &);
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explicit value(const std::string &);
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value(const nullptr_t &);
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value(const double &);
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value(const float &);
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value(const int32_t &);
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value(const bool &);
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value(const jsid &);
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value(JSObject &);
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value(JSString *const &);
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value(JSFunction *const &);
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value(JS::Symbol *const &);
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value(const JS::Value &);
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template<class T> value(const JS::Handle<T> &h);
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template<class T> value(const JS::MutableHandle<T> &h);
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template<class T> value(const JS::Rooted<T> &r);
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template<class T> value(const JS::PersistentRooted<T> &p);
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value();
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value(value &&) noexcept;
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value(const value &) = delete;
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value &operator=(value &&) noexcept;
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friend bool undefined(const value &);
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};
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inline
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value::value()
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:JS::Rooted<JS::Value>{*cx, JS::UndefinedValue()}
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{
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}
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inline
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value::value(value &&other)
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noexcept
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:JS::Rooted<JS::Value>{*cx, other.get()}
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{
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other.set(JS::UndefinedValue());
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}
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inline value &
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value::operator=(value &&other)
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noexcept
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{
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set(other.get());
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other.set(JS::UndefinedValue());
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return *this;
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}
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template<class T>
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value::value(const JS::PersistentRooted<T> &r)
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:value(JS::Handle<T>(r))
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{
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}
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template<class T>
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value::value(const JS::Rooted<T> &r)
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:value(JS::Handle<T>(r))
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{
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}
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template<class T>
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value::value(const JS::MutableHandle<T> &h)
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:value(h.get())
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{
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}
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template<class T>
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value::value(const JS::Handle<T> &h)
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:value(h.get())
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{
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}
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inline
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value::value(const JS::Value &val)
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:JS::Rooted<JS::Value>{*cx, val}
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{
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}
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inline
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value::value(JS::Symbol *const &val)
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:JS::Rooted<JS::Value>{*cx, JS::SymbolValue(val)}
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{
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}
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inline
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value::value(JSObject &val)
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:JS::Rooted<JS::Value>{*cx, JS::ObjectValue(val)}
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{
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}
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inline
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value::value(JSString *const &val)
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:JS::Rooted<JS::Value>{*cx, JS::StringValue(val)}
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{
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}
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inline
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value::value(JSFunction *const &val)
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:JS::Rooted<JS::Value>{*cx}
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{
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auto *const obj(JS_GetFunctionObject(val));
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if(unlikely(!obj))
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throw type_error("Function cannot convert to Object");
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set(JS::ObjectValue(*obj));
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}
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inline
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value::value(const jsid &val)
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:JS::Rooted<JS::Value>{*cx}
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{
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if(!JS_IdToValue(*cx, val, &(*this)))
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throw type_error("Failed to construct value from Id");
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}
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inline
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value::value(const bool &b)
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:JS::Rooted<JS::Value>{*cx, JS::BooleanValue(b)}
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{
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}
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inline
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value::value(const int32_t &val)
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:JS::Rooted<JS::Value>{*cx, JS::Int32Value(val)}
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{
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}
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inline
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value::value(const float &val)
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:JS::Rooted<JS::Value>{*cx, JS::Float32Value(val)}
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{
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}
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inline
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value::value(const double &val)
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:JS::Rooted<JS::Value>{*cx, JS::DoubleValue(val)}
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{
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}
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inline
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value::value(const nullptr_t &)
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:JS::Rooted<JS::Value>{*cx, JS::NullValue()}
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{
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}
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inline
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value::value(const std::string &s)
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:JS::Rooted<JS::Value>
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{
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*cx,
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JS::StringValue(JS_NewStringCopyN(*cx, s.data(), s.size()))
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}
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{
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}
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inline
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value::value(const char *const &s)
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:JS::Rooted<JS::Value>
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{
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*cx,
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!s? JS::NullValue() : JS::StringValue(JS_NewStringCopyZ(*cx, s))
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}
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{
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}
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inline
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value::operator bool()
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const
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{
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return JS::ToBoolean(*this);
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}
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inline
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value::operator uint16_t()
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const
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{
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uint16_t ret;
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if(!JS::ToUint16(*cx, *this, &ret))
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throw type_error("Failed cast to uint16_t");
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return ret;
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}
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inline
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value::operator int32_t()
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const
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{
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int32_t ret;
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if(!JS::ToInt32(*cx, *this, &ret))
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throw type_error("Failed cast to int32_t");
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return ret;
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}
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inline
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value::operator uint32_t()
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const
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{
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uint32_t ret;
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if(!JS::ToUint32(*cx, *this, &ret))
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throw type_error("Failed cast to uint32_t");
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return ret;
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}
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inline
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value::operator int64_t()
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const
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{
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int64_t ret;
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if(!JS::ToInt64(*cx, *this, &ret))
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throw type_error("Failed cast to int64_t");
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return ret;
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}
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inline
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value::operator uint64_t()
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const
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{
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uint64_t ret;
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if(!JS::ToUint64(*cx, *this, &ret))
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throw type_error("Failed cast to uint64_t");
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return ret;
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}
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inline
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value::operator double()
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const
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{
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double ret;
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if(!JS::ToNumber(*cx, *this, &ret))
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throw type_error("Failed cast to double");
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return ret;
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}
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inline
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value::operator std::string()
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const
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{
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const auto s(JS::ToString(*cx, *this));
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return s? native(s) : throw type_error("Failed to cast to string");
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}
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inline
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value::operator JSType()
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const
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{
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return JS_TypeOfValue(*cx, *this);
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}
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inline bool
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undefined(const value &val)
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{
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return JSType(val) == JSTYPE_VOID;
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}
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} // namespace js
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} // namespace ircd
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