mirror of
https://github.com/matrix-construct/construct
synced 2024-10-31 02:48:58 +01:00
137 lines
3.8 KiB
C++
137 lines
3.8 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_SCRIPT_H
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namespace ircd {
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namespace js {
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string decompile(const JS::Handle<JSScript *> &, const char *const &name, const bool &pretty = false);
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ctx::future<void *> compile_async(const JS::ReadOnlyCompileOptions &, const std::u16string &);
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namespace basic {
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template<lifetime L>
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struct script
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:root<JSScript *, L>
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{
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IRCD_OVERLOAD(yielding)
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value<lifetime::stack> operator()(JS::AutoObjectVector &stack) const;
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value<lifetime::stack> operator()() const;
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using root<JSScript *, L>::root;
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script(yielding_t, const JS::ReadOnlyCompileOptions &opts, const std::u16string &src);
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script(const JS::ReadOnlyCompileOptions &opts, const std::u16string &src);
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script(const JS::ReadOnlyCompileOptions &opts, const std::string &src);
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script(JSScript *const &);
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script(JSScript &);
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};
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} // namespace basic
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using script = basic::script<lifetime::stack>;
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using heap_script = basic::script<lifetime::heap>;
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//
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// Implementation
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//
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namespace basic {
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template<lifetime L>
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script<L>::script(JSScript &val)
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:script<L>::root::type{&val}
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{
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}
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template<lifetime L>
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script<L>::script(JSScript *const &val)
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:script<L>::root::type{val}
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{
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if(unlikely(!this->get()))
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throw internal_error("NULL script");
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}
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template<lifetime L>
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script<L>::script(const JS::ReadOnlyCompileOptions &opts,
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const std::string &src)
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:script<L>::root::type{}
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{
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if(!JS::Compile(*cx, opts, src.data(), src.size(), &(*this)))
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throw jserror(jserror::pending);
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}
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template<lifetime L>
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script<L>::script(const JS::ReadOnlyCompileOptions &opts,
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const std::u16string &src)
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:script<L>::root::type{}
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{
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if(!JS::Compile(*cx, opts, src.data(), src.size(), &(*this)))
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throw jserror(jserror::pending);
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}
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template<lifetime L>
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script<L>::script(yielding_t,
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const JS::ReadOnlyCompileOptions &opts,
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const std::u16string &src)
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:script<L>::root::type{[&opts, &src]
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{
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// This constructor compiles the script concurrently by yielding this ircd::ctx.
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// The compilation occurs on another thread entirely, so other ircd contexts will
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// still be able to run.
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auto future(compile_async(opts, src));
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void *const token(future.get());
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return token? JS::FinishOffThreadScript(*cx, *rt, token):
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script(opts, src).get();
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}()}
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{
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if(unlikely(!this->get()))
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throw jserror(jserror::pending);
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}
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template<lifetime L>
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value<lifetime::stack>
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script<L>::operator()()
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const
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{
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value<lifetime::stack> ret;
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if(!JS_ExecuteScript(*cx, *this, &ret))
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throw jserror(jserror::pending);
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return ret;
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}
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template<lifetime L>
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value<lifetime::stack>
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script<L>::operator()(JS::AutoObjectVector &stack)
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const
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{
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value<lifetime::stack> ret;
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if(!JS_ExecuteScript(*cx, stack, *this, &ret))
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throw jserror(jserror::pending);
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return ret;
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}
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} // namespace basic
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} // namespace js
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} // namespace ircd
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