mirror of
https://github.com/matrix-construct/construct
synced 2024-08-18 23:54:55 +02:00
220 lines
5.4 KiB
C++
220 lines
5.4 KiB
C++
/*
|
|
* Copyright (C) 2016 Charybdis Development Team
|
|
* Copyright (C) 2016 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
|
|
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#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
|