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#include "hook_manager.hh"
#include "debug.hh"
#include "command_manager.hh"
#include "context.hh"
#include "display_buffer.hh"
#include "face_registry.hh"
#include "option.hh"
#include "option_types.hh"
#include "profile.hh"
#include "ranges.hh"
#include "regex.hh"
namespace Kakoune
{
struct HookManager::HookData
{
String group;
HookFlags flags;
Regex filter;
String commands;
bool should_run(bool only_always, const Regex& disabled_hooks, StringView param,
MatchResults<const char*>& captures) const
{
return (not only_always or (flags & HookFlags::Always)) and
(group.empty() or disabled_hooks.empty() or
not regex_match(group.begin(), group.end(), disabled_hooks))
and regex_match(param.begin(), param.end(), captures, filter);
}
void exec(Hook hook, StringView param, Context& context, const MatchResults<const char*>& captures)
{
if (context.options()["debug"].get<DebugFlags>() & DebugFlags::Hooks)
write_to_debug_buffer(format("hook {}({})/{}",
enum_desc(Meta::Type<Hook>{})[to_underlying(hook)].name,
param, group));
EnvVarMap env_vars{ {"hook_param", param.str()} };
for (size_t i = 0; i < captures.size(); ++i)
env_vars.insert({format("hook_param_capture_{}", i),
{captures[i].first, captures[i].second}});
for (auto& c : filter.impl()->named_captures)
env_vars.insert({format("hook_param_capture_{}", c.name),
{captures[c.index].first, captures[c.index].second}});
CommandManager::instance().execute(commands, context, {{}, std::move(env_vars)});
}
};
HookManager::HookManager() : m_parent(nullptr) {}
HookManager::HookManager(HookManager& parent) : SafeCountable{}, m_parent(&parent) {}
HookManager::~HookManager() = default;
void HookManager::add_hook(Hook hook, String group, HookFlags flags, Regex filter, String commands, Context& context)
{
UniquePtr<HookData> hook_data{new HookData{std::move(group), flags, std::move(filter), std::move(commands)}};
if (hook == Hook::ModuleLoaded)
{
const bool only_always = context.hooks_disabled();
auto& disabled_hooks = context.options()["disabled_hooks"].get<Regex>();
for (auto&& name : CommandManager::instance().loaded_modules())
{
MatchResults<const char*> captures;
if (hook_data->should_run(only_always, disabled_hooks, name, captures))
{
hook_data->exec(hook, name, context, captures);
if (hook_data->flags & HookFlags::Once)
return;
}
}
}
m_hooks[to_underlying(hook)].push_back(std::move(hook_data));
}
void HookManager::remove_hooks(const Regex& regex)
{
for (auto& list : m_hooks)
{
list.erase(remove_if(list, [this, ®ex](UniquePtr<HookData>& h) {
if (not regex_match(h->group.begin(), h->group.end(), regex))
return false;
m_hooks_trash.push_back(std::move(h));
return true;
}), list.end());
}
}
CandidateList HookManager::complete_hook_group(StringView prefix, ByteCount pos_in_token)
{
CandidateList res;
for (auto& list : m_hooks)
{
auto container = list | transform([](const UniquePtr<HookData>& h) -> const String& { return h->group; });
for (auto& c : complete(prefix, pos_in_token, container))
{
if (!contains(res, c))
res.push_back(c);
}
}
return res;
}
void HookManager::run_hook(Hook hook, StringView param, Context& context)
{
const bool only_always = context.hooks_disabled();
auto& disabled_hooks = context.options()["disabled_hooks"].get<Regex>();
struct ToRun { HookData* hook; MatchResults<const char*> captures; };
Vector<ToRun> hooks_to_run; // The m_hooks_trash vector ensure hooks wont die during this method
for (auto& hook : m_hooks[to_underlying(hook)])
{
MatchResults<const char*> captures;
if (hook->should_run(only_always, disabled_hooks, param, captures))
hooks_to_run.push_back({hook.get(), std::move(captures)});
}
if (m_parent)
m_parent->run_hook(hook, param, context);
auto hook_name = enum_desc(Meta::Type<Hook>{})[to_underlying(hook)].name;
if (contains(m_running_hooks, std::make_pair(hook, param)))
{
auto error = format("recursive call of hook {}/{}, not executing", hook_name, param);
write_to_debug_buffer(error);
return;
}
m_running_hooks.emplace_back(hook, param);
auto pop_running_hook = OnScopeEnd([this]{
m_running_hooks.pop_back();
if (m_running_hooks.empty())
m_hooks_trash.clear();
});
ProfileScope profile{context, [&](std::chrono::microseconds duration) {
write_to_debug_buffer(format("hook '{}({})' took {} us", hook_name, param, (size_t)duration.count()));
}};
bool hook_error = false;
for (auto& to_run : hooks_to_run)
{
try
{
to_run.hook->exec(hook, param, context, to_run.captures);
if (to_run.hook->flags & HookFlags::Once)
{
auto& hook_list = m_hooks[to_underlying(hook)];
if (auto it = find(hook_list, to_run.hook); it != hook_list.end())
{
m_hooks_trash.push_back(std::move(*it));
hook_list.erase(it);
}
}
}
catch (runtime_error& err)
{
hook_error = true;
write_to_debug_buffer(format("error running hook {}({})/{}: {}",
hook_name, param, to_run.hook->group, err.what()));
}
}
if (hook_error)
context.print_status({
format("Error running hooks for '{}' '{}', see *debug* buffer",
hook_name, param), context.faces()["Error"] });
}
}
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