mirror of
https://github.com/matrix-construct/construct
synced 2024-06-26 05:48:20 +02:00
137 lines
3.5 KiB
C++
137 lines
3.5 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_MODULE_H
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namespace ircd {
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namespace js {
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struct module
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:object
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,script
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{
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IRCD_OVERLOAD(yielding)
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struct trap *trap;
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object requested() const; // GetRequestedModules()
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void instantiate(); // ModuleDeclarationInstantiation()
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void operator()() const; // ModuleEvaluation()
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module(yielding_t, const JS::ReadOnlyCompileOptions &, const std::u16string &src, struct trap *const & = nullptr, const bool &instantiate = true);
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module(const JS::ReadOnlyCompileOptions &, const std::u16string &src, struct trap *const & = nullptr, const bool &instantiate = true);
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static module &our(const object &module); // Get this structure from the record object
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};
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inline
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module::module(const JS::ReadOnlyCompileOptions &opts,
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const std::u16string &src,
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struct trap *const &trap,
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const bool &instantiate)
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:object{[this, &opts, &src, &instantiate]
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() -> object
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{
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static const auto ownership(JS::SourceBufferHolder::NoOwnership);
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object ret(object::uninitialized);
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JS::SourceBufferHolder buf(src.data(), src.size(), ownership);
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if(!JS::CompileModule(*cx, opts, buf, &ret))
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throw jserror(jserror::pending);
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if(unlikely(!ret.get()))
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throw jserror(jserror::pending);
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JS::SetModuleHostDefinedField(ret, value(value::pointer, this));
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return ret;
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}()}
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,script
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{
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JS::GetModuleScript(*cx, static_cast<object &>(*this))
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}
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,trap{trap}
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{
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if(instantiate)
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this->instantiate();
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}
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// This constructor compiles the module concurrently by yielding this ircd::ctx.
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// See the yielding_t overload in script.h for details.
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inline
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module::module(yielding_t,
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const JS::ReadOnlyCompileOptions &opts,
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const std::u16string &src,
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struct trap *const &trap,
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const bool &instantiate)
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:object{[this, &opts, &src]
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() -> object
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{
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static const auto ownership(JS::SourceBufferHolder::NoOwnership);
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auto future(compile_async(opts, src, true));
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void *const token(future.get());
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object ret(object::uninitialized);
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if(!token)
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{
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JS::SourceBufferHolder buf(src.data(), src.size(), ownership);
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if(!JS::CompileModule(*cx, opts, buf, &ret))
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throw jserror(jserror::pending);
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}
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else ret = JS::FinishOffThreadModule(*cx, token);
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if(unlikely(!ret.get()))
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throw jserror(jserror::pending);
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JS::SetModuleHostDefinedField(ret, pointer_value(this));
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return ret;
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}()}
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,script
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{
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JS::GetModuleScript(*cx, static_cast<object &>(*this))
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}
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,trap{trap}
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{
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if(instantiate)
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this->instantiate();
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}
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inline void
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module::instantiate()
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{
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if(!JS::ModuleDeclarationInstantiation(*cx, static_cast<object &>(*this)))
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throw jserror(jserror::pending);
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}
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inline void
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module::operator()()
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const
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{
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if(!JS::ModuleEvaluation(*cx, static_cast<const object &>(*this)))
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throw jserror(jserror::pending);
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}
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inline object
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module::requested()
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const
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{
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return JS::GetRequestedModules(*cx, static_cast<const object &>(*this));
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}
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inline module &
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module::our(const object &module)
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{
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const value priv(JS::GetModuleHostDefinedField(module));
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return *pointer_value<struct module>(priv);
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}
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} // namespace js
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} // namespace ircd
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