mirror of
https://github.com/matrix-construct/construct
synced 2024-11-09 11:31:11 +01:00
137 lines
3.6 KiB
C++
137 lines
3.6 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 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. The
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// full license for this software is available in the LICENSE file.
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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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ctx::future<void *> compile_async(const JS::ReadOnlyCompileOptions &, const std::u16string &, const bool &module = false);
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string decompile(const JS::Handle<JSScript *> &, const char *const &name, const bool &pretty = false);
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size_t bytecodes(const JS::Handle<JSScript *> &, uint8_t *const &buf, const size_t &max);
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bool compilable(const char *const &str, const size_t &len, const object &stack = {});
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bool compilable(const std::string &str, const object &stack = {});
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struct script
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:root<JSScript *>
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{
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IRCD_OVERLOAD(yielding)
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value operator()(JS::AutoObjectVector &environment) const;
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value operator()(const object &environment) const;
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value operator()() const;
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using root<JSScript *>::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(const uint8_t *const &bytecode, const size_t &size);
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script(JSScript *const &);
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script(JSScript &);
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};
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inline
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script::script(JSScript &val)
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:script::root::type{&val}
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{
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}
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inline
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script::script(JSScript *const &val)
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:script::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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inline
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script::script(const uint8_t *const &bytecode,
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const size_t &size)
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:script::root::type
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{
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//JS_DecodeScript(*cx, bytecode, size)
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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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inline
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script::script(const JS::ReadOnlyCompileOptions &opts,
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const std::string &src)
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:script::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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inline
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script::script(const JS::ReadOnlyCompileOptions &opts,
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const std::u16string &src)
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:script::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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// 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, but this ircd context will block until the script is
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// compiled at which point this constructor will complete.
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inline
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script::script(yielding_t,
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const JS::ReadOnlyCompileOptions &opts,
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const std::u16string &src)
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:script::root::type{[this, &opts, &src]
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{
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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, 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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inline value
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script::operator()()
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const
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{
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value 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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inline value
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script::operator()(const object &environment)
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const
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{
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JS::AutoObjectVector env(*cx);
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env.append(object());
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return operator()(env);
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}
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inline value
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script::operator()(JS::AutoObjectVector &environment)
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const
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{
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value ret;
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if(!JS_ExecuteScript(*cx, environment, *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 js
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} // namespace ircd
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