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664 lines (613 loc) · 15.5 KB
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#include "dbg_impl.h"
#include "dbg_protocol.h"
#include "dbg_io.h"
#include "dbg_variables.h"
#include "dbg_format.h"
#include "dbg_delayload.h"
namespace vscode
{
void debugger_impl::set_state(state state)
{
if (state_ == state) return;
state_ = state;
switch (state_)
{
case state::initialized:
event_initialized();
break;
case state::terminated:
event_terminated();
close();
break;
default:
break;
}
custom_->set_state(state);
}
bool debugger_impl::is_state(state state)
{
return state_ == state;
}
void debugger_impl::set_step(step step)
{
step_ = step;
}
bool debugger_impl::is_step(step step)
{
return step_ == step;
}
void debugger_impl::step_in()
{
set_state(state::stepping);
set_step(step::in);
stepping_stacklevel_ = -1000;
stepping_lua_state_ = 0;
}
void debugger_impl::step_over(lua_State* L, lua_Debug* ar)
{
set_state(state::stepping);
set_step(step::over);
stepping_stacklevel_ = stacklevel_;
stepping_lua_state_ = L;
}
void debugger_impl::step_out(lua_State* L, lua_Debug* ar)
{
set_state(state::stepping);
set_step(step::out);
stepping_stacklevel_ = stacklevel_ - 1;
stepping_lua_state_ = L;
}
bool debugger_impl::check_step(lua_State* L, lua_Debug* ar)
{
return stepping_lua_state_ == L && stepping_stacklevel_ >= stacklevel_;
}
bool debugger_impl::check_breakpoint(lua_State *L, lua_Debug *ar)
{
if (ar->currentline > 0)
{
if (breakpoints_.has(ar->currentline))
{
if (!has_source_)
{
has_source_ = true;
cur_source_ = 0;
if (!lua_getinfo(L, "S", ar))
return false;
cur_source_ = breakpoints_.get(ar->source, pathconvert_);
}
if (cur_source_ && breakpoints_.has(cur_source_, ar->currentline, L, ar))
{
step_in();
return true;
}
}
}
return false;
}
bool debugger_impl::request_initialize(rprotocol& req) {
if (!is_state(state::birth)) {
response_error(req, "already initialized");
return false;
}
response_initialize(req);
set_state(state::initialized);
return false;
}
void debugger_impl::initialize_sourcemaps(rapidjson::Value& args) {
pathconvert_.clear_sourcemap();
if (!args.HasMember("sourceMaps")) {
return;
}
auto& mapjson = args["sourceMaps"];
if (!mapjson.IsArray()) {
return;
}
for (auto& e : mapjson.GetArray())
{
if (!e.IsArray())
{
continue;
}
auto& eary = e.GetArray();
if (eary.Size() < 2 || !eary[0].IsString() || !eary[1].IsString())
{
continue;
}
pathconvert_.add_sourcemap(eary[0].Get<std::string>(), eary[1].Get<std::string>());
}
}
bool debugger_impl::request_launch(rprotocol& req) {
lua_State *L = GL;
if (!is_state(state::initialized)) {
response_error(req, "not initialized or unexpected state");
return false;
}
auto& args = req["arguments"];
#if defined(DEBUGGER_DELAYLOAD_LUA)
if (args.HasMember("luadll")) {
delayload::set_lua_dll(vscode::u2w(args["luadll"].Get<std::string>()));
}
#endif
if (!args.HasMember("program") || !args["program"].IsString()) {
response_error(req, "Launch failed");
return false;
}
initialize_sourcemaps(args);
if (args.HasMember("cwd") && args["cwd"].IsString()) {
fs::current_path(fs::path(args["cwd"].Get<std::string>()));
}
if (args.HasMember("path") && args["path"].IsString())
{
std::string path = u2a(args["path"]);
lua_getglobal(L, "package");
lua_pushlstring(L, path.data(), path.size());
lua_setfield(L, -2, "path");
lua_pop(L, 1);
}
if (args.HasMember("cpath") && args["cpath"].IsString())
{
std::string path = u2a(args["cpath"]);
lua_getglobal(L, "package");
lua_pushlstring(L, path.data(), path.size());
lua_setfield(L, -2, "cpath");
lua_pop(L, 1);
}
lua_newtable(L);
if (args.HasMember("arg0")) {
if (args["arg0"].IsString()) {
auto& v = u2a(args["arg0"]);
lua_pushlstring(L, v.data(), v.size());
}
else {
lua_pushstring(L, "");
}
lua_rawseti(L, -2, 0);
}
if (args.HasMember("arg") && args["arg"].IsArray()) {
int i = 1;
for (auto& v : args["arg"].GetArray())
{
if (v.IsString()) {
lua_pushlstring(L, v.GetString(), v.GetStringLength());
}
else {
lua_pushstring(L, "");
}
lua_rawseti(L, -2, i++);
}
}
lua_setglobal(L, "arg");
cache_launch_ = std::move(req);
return false;
}
static int errfunc(lua_State* L)
{
luaL_traceback(L, L, lua_tostring(L, 1), 1);
return 1;
}
bool debugger_impl::request_launch_done(rprotocol& req) {
lua_State *L = GL;
bool stopOnEntry = true;
auto& args = req["arguments"];
if (args.HasMember("stopOnEntry") && args["stopOnEntry"].IsBool()) {
stopOnEntry = args["stopOnEntry"].GetBool();
}
std::string program = u2a(args["program"]);
int status = luaL_loadfile(L, program.c_str());
if (status != LUA_OK) {
event_output("console", format("Failed to launch %s due to error: %s\n", program, lua_tostring(L, -1)));
response_error(req, "Launch failed");
lua_pop(L, 1);
return false;
}
else
{
response_success(req);
}
event_thread(true);
if (stopOnEntry)
{
set_state(state::stepping);
event_stopped("entry");
}
else
{
set_state(state::running);
}
open();
lua_pushcfunction(L, errfunc);
lua_insert(L, -2);
if (lua_pcall(L, 0, 0, -2))
{
event_output("console", format("Program terminated with error: %s\n", lua_tostring(L, -1)));
lua_pop(L, 1);
}
lua_pop(L, 1);
set_state(state::terminated);
return false;
}
bool debugger_impl::request_attach(rprotocol& req)
{
if (!is_state(state::initialized)) {
response_error(req, "not initialized or unexpected state");
return false;
}
auto& args = req["arguments"];
bool stopOnEntry = true;
if (args.HasMember("stopOnEntry") && args["stopOnEntry"].IsBool()) {
stopOnEntry = args["stopOnEntry"].GetBool();
}
initialize_sourcemaps(args);
response_success(req);
event_thread(true);
if (stopOnEntry)
{
set_state(state::stepping);
event_stopped("entry");
}
else
{
set_state(state::running);
}
open();
cache_launch_ = rprotocol();
return !stopOnEntry;
}
bool debugger_impl::request_thread(rprotocol& req, lua_State* L, lua_Debug *ar) {
response_thread(req);
return false;
}
static intptr_t ensure_value_fits_in_mantissa(intptr_t sourceReference) {
assert(sourceReference <= 9007199254740991);
return sourceReference;
}
bool debugger_impl::request_stack_trace(rprotocol& req, lua_State* L, lua_Debug *ar) {
response_success(req, [&](wprotocol& res)
{
auto& args = req["arguments"];
int levels = args["levels"].GetInt();
lua_Debug entry;
int depth = 0;
for (auto _ : res("stackFrames").Array())
{
while (lua_getstack(L, depth, &entry) && depth < levels)
{
for (auto _ : res.Object())
{
int status = lua_getinfo(L, "Sln", &entry);
assert(status);
const char *src = entry.source;
if (memcmp(src, "=[C]", 4) == 0)
{
for (auto _ : res("source").Object())
{
res("name").String("<C function>");
res("sourceReference").Int64(-1);
}
}
else if (*src == '@' || *src == '=')
{
fs::path path;
custom::result r = pathconvert_.get_or_eval(src, path);
if (r == custom::result::sucess || r == custom::result::sucess_once)
{
fs::path name = path.filename();
for (auto _ : res("source").Object())
{
res("name").String(a2u(name.string()));
res("path").String(a2u(path.string()));
res("sourceReference").Int64(0);
}
}
}
else
{
intptr_t reference = ensure_value_fits_in_mantissa((intptr_t)src);
stack_.push_back({ depth, reference });
for (auto _ : res("source").Object())
{
res("sourceReference").Int64(reference);
}
}
res("id").Int(depth);
res("column").Int(1);
res("name").String(entry.name ? entry.name : "?");
res("line").Int(entry.currentline);
depth++;
}
}
}
res("totalFrames").Int(depth);
});
return false;
}
bool debugger_impl::request_source(rprotocol& req, lua_State* L, lua_Debug *ar) {
auto& args = req["arguments"];
lua_Debug entry;
int64_t sourceReference = args["sourceReference"].GetInt64();
int depth = -1;
for (auto e : stack_) {
if (e.reference == sourceReference) {
depth = e.depth;
break;
}
}
if (lua_getstack(L, depth, &entry)) {
int status = lua_getinfo(L, "Sln", &entry);
if (status) {
const char *src = entry.source;
if (*src != '@' && *src != '=') {
response_source(req, src);
return false;
}
}
}
response_source(req, "Source not available");
return false;
}
bool debugger_impl::request_set_breakpoints(rprotocol& req)
{
auto& args = req["arguments"];
auto& source = args["source"];
if (!source.HasMember("path")) {
response_error(req, "not yet implemented");
return false;
}
fs::path client_path = path_normalize(u2a(source["path"].Get<std::string>()));
assert(client_path.is_absolute());
breakpoints_.clear(client_path);
std::vector<size_t> lines;
for (auto& m : args["breakpoints"].GetArray())
{
size_t line = m["line"].GetUint();
lines.push_back(line);
if (!m.HasMember("condition"))
{
breakpoints_.insert(client_path, line);
}
else
{
breakpoints_.insert(client_path, line, m["condition"].Get<std::string>());
}
}
response_success(req, [&](wprotocol& res)
{
for (size_t d : res("breakpoints").Array(lines.size()))
{
for (auto _ : res.Object())
{
res("verified").Bool(true);
for (auto _ : res("source").Object())
{
res("path").String(a2u(client_path.string()));
}
res("line").Int(lines[d]);
}
}
});
return false;
}
bool debugger_impl::request_scopes(rprotocol& req, lua_State* L, lua_Debug *ar) {
auto& args = req["arguments"];
lua_Debug entry;
int depth = args["frameId"].GetInt();
if (!lua_getstack(L, depth, &entry)) {
response_error(req, "Error retrieving stack frame");
return false;
}
response_success(req, [&](wprotocol& res)
{
for (auto _ : res("scopes").Array())
{
int status = lua_getinfo(L, "u", &entry);
assert(status);
for (auto _ : res.Object())
{
res("name").String("Locals");
res("variablesReference").Int64((int)var_type::local | (depth << 8));
res("expensive").Bool(false);
}
if (entry.isvararg)
{
for (auto _ : res.Object())
{
res("name").String("Var Args");
res("variablesReference").Int64((int)var_type::vararg | (depth << 8));
res("expensive").Bool(false);
}
}
for (auto _ : res.Object())
{
res("name").String("Upvalues");
res("variablesReference").Int64((int)var_type::upvalue | (depth << 8));
res("expensive").Bool(false);
}
for (auto _ : res.Object())
{
res("name").String("Globals");
res("variablesReference").Int64((int)var_type::global | (depth << 8));
res("expensive").Bool(false);
}
for (auto _ : res.Object())
{
res("name").String("Standard");
res("variablesReference").Int64((int)var_type::standard | (depth << 8));
res("expensive").Bool(false);
}
}
});
return false;
}
bool debugger_impl::request_variables(rprotocol& req, lua_State* L, lua_Debug *ar) {
auto& args = req["arguments"];
lua_Debug entry;
int64_t var_ref = args["variablesReference"].GetInt64();
var_type type = (var_type)(var_ref & 0xFF);
int depth = (var_ref >> 8) & 0xFF;
if (!lua_getstack(L, depth, &entry)) {
response_error(req, "Error retrieving variables");
return false;
}
if (type == var_type::watch)
{
if (!watch_.get((var_ref >> 16) & 0xFF))
{
response_error(req, "Error retrieving variables");
}
}
response_success(req, [&](wprotocol& res)
{
variables resv(res, L, &entry, type == var_type::watch ? -1 : 0);
resv.push_value(type, depth, var_ref >> 16, pathconvert_);
});
return false;
}
bool debugger_impl::request_set_variable(rprotocol& req, lua_State *L, lua_Debug *ar)
{
auto& args = req["arguments"];
lua_Debug entry;
int64_t var_ref = args["variablesReference"].GetInt64();
var_type type = (var_type)(var_ref & 0xFF);
int depth = (var_ref >> 8) & 0xFF;
if (!lua_getstack(L, depth, &entry)) {
response_error(req, "Failed set variable");
return false;
}
variable var;
var.name = args["name"].Get<std::string>();
var.value = args["value"].Get<std::string>();
if (!variables::set_value(L, &entry, type, depth, var_ref >> 16, var))
{
response_error(req, "Failed set variable");
return false;
}
response_success(req, [&](wprotocol& res)
{
res("value").String(var.value);
res("type").String(var.type);
});
return false;
}
bool debugger_impl::request_configuration_done(rprotocol& req)
{
response_success(req);
if (cache_launch_.IsNull()) {
return false;
}
return request_launch_done(cache_launch_);
}
bool debugger_impl::request_disconnect(rprotocol& req)
{
response_success(req);
set_state(state::terminated);
network_->close();
return true;
}
bool debugger_impl::request_stepin(rprotocol& req, lua_State* L, lua_Debug *ar)
{
response_success(req);
step_in();
return true;
}
bool debugger_impl::request_stepout(rprotocol& req, lua_State* L, lua_Debug *ar)
{
response_success(req);
step_out(L, ar);
return true;
}
bool debugger_impl::request_next(rprotocol& req, lua_State* L, lua_Debug *ar)
{
response_success(req);
step_over(L, ar);
return true;
}
bool debugger_impl::request_continue(rprotocol& req, lua_State* L, lua_Debug *ar)
{
response_success(req);
set_state(state::running);
return true;
}
bool debugger_impl::request_pause(rprotocol& req)
{
response_success(req);
step_in();
return true;
}
bool debugger_impl::request_evaluate(rprotocol& req, lua_State *L, lua_Debug *ar)
{
auto& args = req["arguments"];
auto& context = args["context"];
std::string expression = args["expression"].Get<std::string>();
lua_Debug current;
if (args.HasMember("frameId")) {
int depth = args["frameId"].GetInt();
if (!lua_getstack(L, depth, ¤t)) {
response_error(req, "error stack frame");
return false;
}
}
else {
current = *ar;
}
int nresult = 0;
if (!evaluate(L, ¤t, ("return " + expression).c_str(), nresult, context == "repl"))
{
if (context != "repl")
{
response_error(req, lua_tostring(L, -1));
lua_pop(L, 1);
return false;
}
if (!evaluate(L, ¤t, expression.c_str(), nresult, true))
{
response_error(req, lua_tostring(L, -1));
lua_pop(L, 1);
return false;
}
response_success(req, [&](wprotocol& res)
{
res("result").String("ok");
res("variablesReference").Int64(0);
});
lua_pop(L, nresult);
return false;
}
std::vector<variable> rets(nresult);
for (int i = 0; i < (int)rets.size(); ++i)
{
var_set_value(rets[i], L, i - (int)rets.size(), pathconvert_);
}
int64_t reference = 0;
if (rets.size() == 1 && context == "watch" && can_extand(L, -1))
{
size_t pos = watch_.add();
if (pos > 0)
{
reference = (int)var_type::watch | (pos << 16);
}
}
lua_pop(L, nresult);
response_success(req, [&](wprotocol& res)
{
if (rets.size() == 0)
{
res("result").String("nil");
}
else if (rets.size() == 1)
{
res("result").String(rets[0].value);
}
else
{
std::string result = rets[0].value;
for (int i = 1; i < (int)rets.size(); ++i)
{
result += ", " + rets[i].value;
}
res("result").String(result);
}
res("variablesReference").Int64(reference);
});
return false;
}
}