mirror of
https://github.com/matrix-construct/construct
synced 2024-08-23 10:04:47 +02:00
209 lines
4.8 KiB
C++
209 lines
4.8 KiB
C++
// Matrix Construct
|
|
//
|
|
// Copyright (C) Matrix Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
|
|
//
|
|
// Permission to use, copy, modify, and/or distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice is present in all copies. The
|
|
// full license for this software is available in the LICENSE file.
|
|
|
|
#pragma once
|
|
#define HAVE_IRCD_JS_FUNCTION_H
|
|
|
|
namespace ircd {
|
|
namespace js {
|
|
|
|
string decompile(const JS::Handle<JSFunction *> &, const bool &pretty = false);
|
|
string display_name(const JSFunction *const &);
|
|
string name(const JSFunction *const *);
|
|
uint16_t arity(const JSFunction *const &);
|
|
bool is_ctor(const JSFunction *const &);
|
|
object enclosing_scope(JSFunction *const &);
|
|
|
|
struct function
|
|
:root<JSFunction *>
|
|
{
|
|
struct native; // Use this instead to specify a function in C
|
|
struct literal; // Use this instead to supply the JS as a C string literal.
|
|
|
|
IRCD_OVERLOAD(outermost_enclosing)
|
|
|
|
operator JSObject *() const;
|
|
explicit operator script() const;
|
|
explicit operator string() const;
|
|
|
|
value operator()(const object::handle &, const vector<value>::handle &) const;
|
|
template<class... args> value operator()(const object::handle &, args&&...) const;
|
|
|
|
// new function
|
|
template<class string_t>
|
|
function(JS::AutoObjectVector &stack,
|
|
const JS::CompileOptions &opts,
|
|
const char *const &name,
|
|
const std::vector<string_t> &args,
|
|
const string_t &src);
|
|
|
|
using root<JSFunction *>::root;
|
|
function(outermost_enclosing_t); // GetOutermostEnclosingFunctionOfScriptedCaller
|
|
function(const value::handle &);
|
|
function(const value &);
|
|
function(JSFunction *const &);
|
|
function(JSFunction &);
|
|
};
|
|
|
|
inline
|
|
function::function(JSFunction &func)
|
|
:function::root::type{&func}
|
|
{
|
|
}
|
|
|
|
inline
|
|
function::function(JSFunction *const &func)
|
|
:function::root::type{func}
|
|
{
|
|
if(unlikely(!this->get()))
|
|
throw internal_error("NULL function");
|
|
}
|
|
|
|
inline
|
|
function::function(const value &val)
|
|
:function{static_cast<value::handle>(val)}
|
|
{
|
|
}
|
|
|
|
inline
|
|
function::function(const value::handle &val)
|
|
:function::root::type
|
|
{
|
|
JS_ValueToFunction(*cx, val)
|
|
}
|
|
{
|
|
if(!this->get())
|
|
throw type_error("value is not a function");
|
|
}
|
|
|
|
inline
|
|
function::function(outermost_enclosing_t)
|
|
:function::root::type
|
|
{
|
|
::js::GetOutermostEnclosingFunctionOfScriptedCaller(*cx)
|
|
}
|
|
{
|
|
if(!this->get())
|
|
throw internal_error("Caller has no enclosing function");
|
|
}
|
|
|
|
template<class string_t>
|
|
function::function(JS::AutoObjectVector &stack,
|
|
const JS::CompileOptions &opts,
|
|
const char *const &name,
|
|
const std::vector<string_t> &args,
|
|
const string_t &src)
|
|
:function::root::type{}
|
|
{
|
|
std::vector<const typename string_t::value_type *> argp(args.size());
|
|
std::transform(begin(args), end(args), begin(argp), []
|
|
(const string_t &arg)
|
|
{
|
|
return arg.data();
|
|
});
|
|
|
|
if(!JS::CompileFunction(*cx,
|
|
stack,
|
|
opts,
|
|
name,
|
|
argp.size(),
|
|
&argp.front(),
|
|
src.data(),
|
|
src.size(),
|
|
&(*this)))
|
|
{
|
|
throw syntax_error("Failed to compile function");
|
|
}
|
|
}
|
|
|
|
template<class... args>
|
|
value
|
|
function::operator()(const object::handle &that,
|
|
args&&... a)
|
|
const
|
|
{
|
|
const vector<value> argv
|
|
{
|
|
std::forward<args>(a)...
|
|
};
|
|
|
|
const vector<value>::handle handle(argv);
|
|
return operator()(that, handle);
|
|
}
|
|
|
|
inline
|
|
function::operator string()
|
|
const
|
|
{
|
|
return decompile(*this, true);
|
|
}
|
|
|
|
inline
|
|
function::operator script()
|
|
const
|
|
{
|
|
return JS_GetFunctionScript(*cx, *this);
|
|
}
|
|
|
|
inline
|
|
function::operator JSObject *()
|
|
const
|
|
{
|
|
const auto ret(JS_GetFunctionObject(this->get()));
|
|
if(unlikely(!ret))
|
|
throw type_error("function cannot cast to Object");
|
|
|
|
return ret;
|
|
}
|
|
|
|
inline object
|
|
enclosing_scope(JSFunction *const &f)
|
|
{
|
|
return ::js::GetNearestEnclosingWithEnvironmentObjectForFunction(f);
|
|
}
|
|
|
|
inline bool
|
|
is_ctor(const JSFunction *const &f)
|
|
{
|
|
return JS_IsConstructor(const_cast<JSFunction *>(f));
|
|
}
|
|
|
|
inline uint16_t
|
|
arity(const JSFunction *const &f)
|
|
{
|
|
return JS_GetFunctionArity(const_cast<JSFunction *>(f));
|
|
}
|
|
|
|
inline string
|
|
name(const JSFunction *const &f)
|
|
{
|
|
const auto ret(JS_GetFunctionId(const_cast<JSFunction *>(f)));
|
|
return ret? string(ret) : string("<unnamed>");
|
|
}
|
|
|
|
inline string
|
|
display_name(const JSFunction *const &f)
|
|
{
|
|
const auto ret(JS_GetFunctionDisplayId(const_cast<JSFunction *>(f)));
|
|
return ret? string(ret) : string("<anonymous>");
|
|
}
|
|
|
|
inline string
|
|
decompile(const JS::Handle<JSFunction *> &f,
|
|
const bool &pretty)
|
|
{
|
|
uint flags(0);
|
|
flags |= pretty? 0 : JS_DONT_PRETTY_PRINT;
|
|
return JS_DecompileFunction(*cx, f, flags);
|
|
}
|
|
|
|
} // namespace js
|
|
} // namespace ircd
|