mirror of
https://github.com/matrix-construct/construct
synced 2024-11-26 00:32:35 +01:00
316 lines
8.1 KiB
C++
316 lines
8.1 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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#include <ircd/js/js.h>
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#include <js/Initialization.h>
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#include <mozilla/ThreadLocal.h>
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#include "/home/jason/charybdis/charybdis/gecko-dev/js/src/vm/Opcodes.h"
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namespace ircd {
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namespace js {
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decltype(xdr::bytecode::info) xdr::bytecode::info
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{
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0
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};
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} // namespace js
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} // namespace ircd
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ircd::js::xdr::xdr(const uint8_t *const &buf,
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const size_t &len)
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:header
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{
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reinterpret_cast<const struct header *>(buf)
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}
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,name
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{
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reinterpret_cast<const struct atom *>(buf + sizeof(*header))
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}
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,binding{[this]
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{
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const auto *ret(reinterpret_cast<const uint8_t *>(this->name));
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for_each_name([&ret](const struct atom &atom)
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{
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ret += sizeof(struct atom) + atom.length;
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});
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return reinterpret_cast<const struct binding *>(ret);
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}()}
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,sourcecode{[this]
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{
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const auto bindings(header->num_bindings());
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const auto *ptr(reinterpret_cast<const uint8_t *>(this->binding + bindings));
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return reinterpret_cast<const struct sourcecode *>(ptr);
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}()}
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,sourcemap{[this]
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{
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const auto *ptr(reinterpret_cast<const uint8_t *>(this->sourcecode + 1) + this->sourcecode->compressed_length);
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return reinterpret_cast<const struct sourcemap *>(ptr);
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}()}
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,displayurl{[this]
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{
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if(!this->sourcemap->have)
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{
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const auto ptr(reinterpret_cast<const uint8_t *>(this->sourcemap) + 1);
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return reinterpret_cast<const struct displayurl *>(ptr);
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}
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const auto ptr(reinterpret_cast<const uint8_t *>(this->sourcemap + 1) + this->sourcemap->len);
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return reinterpret_cast<const struct displayurl *>(ptr);
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}()}
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,filename{[this]
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{
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if(!this->displayurl->have)
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{
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const auto ptr(reinterpret_cast<const uint8_t *>(this->displayurl) + 1);
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return reinterpret_cast<const struct filename *>(ptr);
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}
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const auto ptr(reinterpret_cast<const uint8_t *>(this->displayurl + 1) + this->displayurl->len);
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return reinterpret_cast<const struct filename *>(ptr);
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}()}
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,source{[this]
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{
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if(!this->filename->have)
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{
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const auto ptr(reinterpret_cast<const uint8_t *>(this->filename) + 1);
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return reinterpret_cast<const struct source *>(ptr);
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}
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const auto ptr(reinterpret_cast<const uint8_t *>(this->filename + 1) + strlen(this->filename->name) + 1);
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return reinterpret_cast<const struct source *>(ptr);
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}()}
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,bytecode{[this]
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{
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const auto ptr(reinterpret_cast<const uint8_t *>(this->source + 1));
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return reinterpret_cast<const struct bytecode *>(ptr);
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}()}
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,srcnote{[this]
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{
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const auto ptr(reinterpret_cast<const uint8_t *>(this->bytecode + this->header->length));
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return reinterpret_cast<const struct srcnote *>(ptr);
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}()}
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,atom{[this]
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{
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const auto ptr(reinterpret_cast<const uint8_t *>(this->srcnote + this->header->n_srcnotes));
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return reinterpret_cast<const struct atom *>(ptr);
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}()}
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,consts{[this]
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{
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const auto *ptr(reinterpret_cast<const uint8_t *>(this->atom));
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for_each_atom([&ptr](const struct atom &atom)
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{
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ptr += sizeof(struct atom) + atom.length;
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});
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return reinterpret_cast<const struct consts *>(ptr);
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}()}
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,object{[this]
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{
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const auto *ptr(reinterpret_cast<const uint8_t *>(this->consts));
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for_each_const([&ptr](const struct consts &c)
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{
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ptr += length(c);
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});
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return reinterpret_cast<const struct object *>(ptr);
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}()}
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{
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}
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void
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ircd::js::xdr::for_each_object(const std::function<void (const struct object &)> &cb)
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const
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{
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auto object(this->object);
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const auto *ptr(reinterpret_cast<const uint8_t *>(object));
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for(size_t i(0); i < header->n_objects; i++)
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{
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cb(*object);
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ptr += length(*object);
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object = reinterpret_cast<const struct object *>(ptr);
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}
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}
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void
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ircd::js::xdr::for_each_const(const std::function<void (const struct consts &)> &cb)
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const
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{
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auto consts(this->consts);
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const auto *ptr(reinterpret_cast<const uint8_t *>(this->consts));
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for(size_t i(0); i< header->n_consts; i++)
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{
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cb(*consts);
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ptr += length(*consts);
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consts = reinterpret_cast<const struct consts *>(ptr);
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}
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}
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void
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ircd::js::xdr::for_each_bytecode(const std::function<void (const struct bytecode &)> &cb)
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const
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{
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const uint8_t *const start(reinterpret_cast<const uint8_t *>(bytecode));
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const uint8_t *ptr(reinterpret_cast<const uint8_t *>(bytecode));
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for(; ptr < start + header->length;)
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{
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const auto &bytecode(*reinterpret_cast<const struct bytecode *>(ptr));
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ptr += info(bytecode).length;
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cb(bytecode);
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}
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}
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void
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ircd::js::xdr::for_each_binding(const std::function<void (const struct binding &)> &cb)
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const
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{
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const auto *binding(this->binding);
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const size_t bindings(header->num_names());
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for(; binding < this->binding + bindings; ++binding)
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cb(*binding);
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}
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void
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ircd::js::xdr::for_each_name(const std::function<void (const struct atom &)> &cb)
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const
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{
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const uint8_t *ptr(reinterpret_cast<const uint8_t *>(name));
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const auto names(header->num_names());
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for(size_t i(0); i < names; ++i)
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{
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const auto atom(reinterpret_cast<const struct atom *>(ptr));
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cb(*atom);
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ptr += sizeof(struct atom) + atom->length;
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}
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}
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void
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ircd::js::xdr::for_each_atom(const std::function<void (const struct atom &)> &cb)
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const
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{
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const uint8_t *ptr(reinterpret_cast<const uint8_t *>(atom));
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for(size_t i(0); i < header->n_atoms; ++i)
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{
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const auto atom(reinterpret_cast<const struct atom *>(ptr));
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cb(*atom);
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ptr += sizeof(struct atom) + atom->length;
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}
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}
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size_t
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ircd::js::xdr::header::num_bindings()
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const
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{
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return num_names();
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}
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size_t
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ircd::js::xdr::header::num_names()
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const
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{
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return n_args + n_vars + n_body_level_lexicals;
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}
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size_t
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ircd::js::length(const struct xdr::consts &consts)
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{
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switch(consts.tag)
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{
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case 0: return 4 + 4; // ::js::SCRIPT_INT
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case 1: return 4 + 8; // ::js::SCRIPT_DOUBLE
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case 2: // ::js::SCRIPT_ATOM
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return 4 + 4;
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//return 4 + 4 + consts.atom.length;
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case 3: return 4 + 0; // ::js::SCRIPT_TRUE
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case 4: return 4 + 0; // ::js::SCRIPT_FALSE
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case 5: return 4 + 0; // ::js::SCRIPT_NULL
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case 6: // ::js::SCRIPT_OBJECT
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throw error("unsupported consts (object)");
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case 7: return 4 + 0; // ::js::SCRIPT_VOID
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case 8: return 4 + 0; // ::js::SCRIPT_HOLE
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default:
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throw error("unsupported consts tag [%u]", consts.tag);
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}
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}
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size_t
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ircd::js::length(const struct xdr::object &object)
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{
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switch(object.classk)
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{
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case 0: return 4 + length(object.block);
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case 1: return 4 + length(object.with);
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case 2: return 4 + length(object.function);
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case 3: return 4 + length(object.literal);
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default:
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throw error("unsupported object class kind [%u]", object.classk);
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}
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}
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size_t
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ircd::js::length(const struct xdr::object::literal &literal)
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{
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size_t ret(0);
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const auto *ptr(reinterpret_cast<const uint8_t *>(&literal) + 8);
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for(size_t i(0); i < literal.n_properties; ++i)
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{
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const auto prop(reinterpret_cast<const struct xdr::consts *>(ptr + ret));
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printf("i[%zu] atom [%u] length [%u]\n", i, prop->u32, prop->atom.length);
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const auto len(length(*prop));
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ret += 8;
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}
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return 8 + ret;
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}
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size_t
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ircd::js::length(const struct xdr::object::function &function)
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{
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return 12;
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}
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size_t
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ircd::js::length(const struct xdr::object::with &with)
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{
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return 0;
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}
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size_t
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ircd::js::length(const struct xdr::object::block &block)
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{
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return 0;
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}
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__attribute__((constructor))
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void
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init_opcodes()
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{
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using xdr = ircd::js::xdr;
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#define IRCD_JS_INIT_OP(code, value, name, image, len, nuses, ndefs, format) \
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xdr::bytecode::info[value] = { name, uint8_t(len), uint8_t(ndefs), uint8_t(nuses) };
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static const auto js_undefined_str("");
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static const auto js_false_str("false");
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static const auto js_true_str("false");
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static const auto js_void_str("void");
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static const auto js_null_str("null");
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static const auto js_throw_str("throw");
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static const auto js_in_str("in");
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static const auto js_instanceof_str("instanceOf");
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static const auto js_typeof_str("typeOf");
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FOR_EACH_OPCODE(IRCD_JS_INIT_OP);
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}
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