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Copy pathdbg_impl.cpp
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263 lines (240 loc) · 5.69 KB
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#include "dbg_impl.h"
#include "dbg_protocol.h"
#include "dbg_io.h"
#include "dbg_format.h"
#include <thread>
namespace vscode
{
static custom global_custom;
static void debughook(debugger_impl* dbg, lua_State *L, lua_Debug *ar)
{
dbg->hook(L, ar);
}
void debugger_impl::open()
{
stacklevel_ = 0;
using namespace asmjit;
CodeHolder code;
code.init(jit_.getCodeInfo());
X86Assembler assemblr(&code);
assemblr.push(x86::dword_ptr(x86::esp, 8));
assemblr.push(x86::dword_ptr(x86::esp, 8));
assemblr.push(imm(reinterpret_cast<intptr_t>(this)));
assemblr.call(imm(reinterpret_cast<intptr_t>(&debughook)));
assemblr.add(x86::esp, 12);
assemblr.ret();
lua_Hook hook;
Error err = jit_.add(&hook, &code);
assert(!err);
if (funcptr_)
jit_.release(funcptr_);
funcptr_ = hook;
lua_sethook(GL, hook, LUA_MASKCALL | LUA_MASKLINE | LUA_MASKRET, 0);
}
void debugger_impl::close()
{
lua_sethook(GL, 0, 0, 0);
breakpoints_.clear();
stack_.clear();
seq = 1;
stacklevel_ = 0;
}
bool debugger_impl::update_main(rprotocol& req, bool& quit)
{
auto it = main_dispatch_.find(req["command"].Get<std::string>());
if (it != main_dispatch_.end())
{
quit = it->second(req);
return true;
}
return false;
}
bool debugger_impl::update_hook(rprotocol& req, lua_State *L, lua_Debug *ar, bool& quit)
{
auto it = hook_dispatch_.find(req["command"].Get<std::string>());
if (it != hook_dispatch_.end())
{
quit = it->second(req, L, ar);
return true;
}
return false;
}
void debugger_impl::hook(lua_State *L, lua_Debug *ar)
{
if (ar->event == LUA_HOOKCALL)
{
stacklevel_++;
has_source_ = false;
return;
}
if (ar->event == LUA_HOOKRET)
{
stacklevel_--;
has_source_ = false;
return;
}
if (ar->event != LUA_HOOKLINE)
return;
if (is_state(state::terminated)) {
return;
}
bool bp = false;
if (is_state(state::running)) {
if (!check_breakpoint(L, ar)) {
return;
}
bp = true;
}
if (is_state(state::stepping)) {
if (is_step(step::out) || is_step(step::over)) {
if (!check_breakpoint(L, ar)) {
if (!check_step(L, ar)) {
return;
}
}
else {
bp = true;
}
}
if (bp)
event_stopped("breakpoint");
else
event_stopped("step");
step_in();
}
bool quit = false;
while (!quit)
{
custom_->update_stop();
network_->update(0);
rprotocol req = network_->input();
if (req.IsNull()) {
std::this_thread::sleep_for(std::chrono::milliseconds(10));
continue;
}
if (req["type"] != "request") {
continue;
}
if (update_main(req, quit)) {
continue;
}
if (update_hook(req, L, ar, quit)) {
continue;
}
response_error(req, format("%s not yet implemented", req["command"].GetString()).c_str());
}
}
void debugger_impl::update()
{
network_->update(0);
if (is_state(state::birth))
{
rprotocol req = network_->input();
if (req.IsNull()) {
return;
}
if (req["type"] != "request") {
return;
}
if (req["command"] == "initialize") {
request_initialize(req);
}
else if (req["command"] == "disconnect") {
request_disconnect(req);
}
}
else if (is_state(state::initialized) || is_state(state::running))
{
rprotocol req = network_->input();
if (req.IsNull()) {
return;
}
if (req["type"] != "request") {
return;
}
bool quit = false;
if (!update_main(req, quit)) {
response_error(req, format("%s not yet implemented", req["command"].GetString()).c_str());
}
}
else if (is_state(state::terminated))
{
set_state(state::birth);
}
}
void debugger_impl::set_custom(custom* custom)
{
custom_ = custom;
}
struct easy_string
{
easy_string(const char* buf, size_t len)
: buf_(buf)
, len_(len)
{ }
const char* data() const
{
return buf_;
}
size_t size() const
{
return len_;
}
const char* buf_;
size_t len_;
};
void debugger_impl::output(const char* category, const char* buf, size_t len)
{
event_output(category, easy_string(buf, len));
}
debugger_impl::~debugger_impl()
{
}
#define DBG_REQUEST_MAIN(name) std::bind(&debugger_impl:: ## name, this, std::placeholders::_1)
#define DBG_REQUEST_HOOK(name) std::bind(&debugger_impl:: ## name, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3)
debugger_impl::debugger_impl(lua_State* L, io* io)
: GL(L)
, seq(1)
, network_(io)
, state_(state::birth)
, step_(step::in)
, stepping_stacklevel_(0)
, stepping_lua_state_(NULL)
, stacklevel_(0)
, breakpoints_()
, stack_()
, watch_(L)
, pathconvert_(this)
, custom_(&global_custom)
, jit_()
, funcptr_(0)
, has_source_(false)
, cur_source_(0)
, main_dispatch_
({
{ "launch", DBG_REQUEST_MAIN(request_launch) },
{ "attach", DBG_REQUEST_MAIN(request_attach) },
{ "disconnect", DBG_REQUEST_MAIN(request_disconnect) },
{ "setBreakpoints", DBG_REQUEST_MAIN(request_set_breakpoints) },
{ "configurationDone", DBG_REQUEST_MAIN(request_configuration_done) },
{ "pause", DBG_REQUEST_MAIN(request_pause) },
})
, hook_dispatch_
({
{ "continue", DBG_REQUEST_HOOK(request_continue) },
{ "next", DBG_REQUEST_HOOK(request_next) },
{ "stepIn", DBG_REQUEST_HOOK(request_stepin) },
{ "stepOut", DBG_REQUEST_HOOK(request_stepout) },
{ "stackTrace", DBG_REQUEST_HOOK(request_stack_trace) },
{ "scopes", DBG_REQUEST_HOOK(request_scopes) },
{ "variables", DBG_REQUEST_HOOK(request_variables) },
{ "setVariable", DBG_REQUEST_HOOK(request_set_variable) },
{ "source", DBG_REQUEST_HOOK(request_source) },
{ "threads", DBG_REQUEST_HOOK(request_thread) },
{ "evaluate", DBG_REQUEST_HOOK(request_evaluate) },
})
{
}
#undef DBG_REQUEST_MAIN
#undef DBG_REQUEST_HOOK
}