/
trace.cpp
231 lines (195 loc) · 7.25 KB
/
trace.cpp
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/*
Copyright (c) 2015 Microsoft Corporation. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Author: Leonardo de Moura
*/
#include <vector>
#include <string>
#include "util/sexpr/option_declarations.h"
#include "kernel/environment.h"
#include "kernel/type_checker.h"
#include "library/io_state.h"
#include "library/trace.h"
#include "library/messages.h"
namespace lean {
static name * g_trace_as_messages = nullptr;
MK_THREAD_LOCAL_GET_DEF(std::vector<name>, get_enabled_trace_classes);
MK_THREAD_LOCAL_GET_DEF(std::vector<name>, get_disabled_trace_classes);
MK_THREAD_LOCAL_GET_DEF(environment, get_dummy_env);
MK_THREAD_LOCAL_GET_DEF(options, get_dummy_options);
LEAN_THREAD_VALUE(bool, g_silent, false);
LEAN_THREAD_PTR(pos_info, g_trace_msg_pos);
LEAN_THREAD_PTR(environment, g_env);
LEAN_THREAD_PTR(options, g_opts);
LEAN_THREAD_PTR(abstract_type_context, g_ctx);
LEAN_THREAD_VALUE(unsigned, g_depth, 0);
void register_trace_class(name const & n) {
register_option(name("trace") + n, BoolOption, "false",
"(trace) enable/disable tracing for the given module and submodules");
}
bool is_trace_enabled() {
return !get_enabled_trace_classes().empty();
}
static void update_class(std::vector<name> & cs, name const & c) {
if (std::find(cs.begin(), cs.end(), c) == cs.end()) {
cs.push_back(c);
}
}
static void enable_trace_class(name const & c) {
update_class(get_enabled_trace_classes(), c);
}
static void disable_trace_class(name const & c) {
update_class(get_disabled_trace_classes(), c);
}
static bool is_trace_class_set(std::vector<name> const & cs, name const & n) {
for (name const & p : cs) {
if (is_prefix_of(p, n)) {
return true;
}
}
return false;
}
bool is_trace_class_enabled(name const & n) {
if (!is_trace_enabled())
return false;
if (is_trace_class_set(get_disabled_trace_classes(), n))
return false; // it was explicitly disabled
return is_trace_class_set(get_enabled_trace_classes(), n);
}
void scope_trace_env::init(environment * env, options * opts, abstract_type_context * ctx) {
m_enable_sz = get_enabled_trace_classes().size();
m_disable_sz = get_disabled_trace_classes().size();
m_old_env = g_env;
m_old_opts = g_opts;
m_old_ctx = g_ctx;
g_env = env;
g_ctx = ctx;
name trace("trace");
if (opts && g_opts != opts) {
opts->for_each([&](name const & n) {
if (is_prefix_of(trace, n)) {
name cls = n.replace_prefix(trace, name());
if (opts->get_bool(n, false))
enable_trace_class(cls);
else
disable_trace_class(cls);
}
});
}
g_opts = opts;
}
scope_trace_env::scope_trace_env(environment const & env, options const & o, abstract_type_context & ctx) {
init(const_cast<environment*>(&env), const_cast<options*>(&o), &ctx);
}
scope_trace_env::scope_trace_env(environment const & env, abstract_type_context & ctx) {
init(const_cast<environment*>(&env), g_opts, &ctx);
}
scope_trace_env::scope_trace_env(options const & o) {
init(g_env, const_cast<options*>(&o), g_ctx);
}
scope_trace_env::~scope_trace_env() {
g_env = const_cast<environment*>(m_old_env);
g_opts = const_cast<options*>(m_old_opts);
g_ctx = m_old_ctx;
get_enabled_trace_classes().resize(m_enable_sz);
get_disabled_trace_classes().resize(m_disable_sz);
}
void scope_trace_inc_depth::activate() {
lean_assert(!m_active);
m_active = true;
g_depth++;
}
scope_trace_inc_depth::~scope_trace_inc_depth() {
if (m_active)
g_depth--;
}
void scope_trace_init_bool_option::init(name const & n, bool v) {
m_initialized = true;
m_old_opts = g_opts;
if (g_opts)
m_opts = *g_opts;
m_opts = m_opts.update_if_undef(n, v);
g_opts = &m_opts;
}
scope_trace_init_bool_option::~scope_trace_init_bool_option() {
if (m_initialized) {
g_opts = m_old_opts;
}
}
struct silent_ios_helper {
std::shared_ptr<output_channel> m_out;
io_state m_ios;
silent_ios_helper():
m_out(new null_output_channel()),
m_ios(get_dummy_ios(), m_out, m_out) {}
};
MK_THREAD_LOCAL_GET_DEF(silent_ios_helper, get_silent_ios_helper);
MK_THREAD_LOCAL_GET(type_checker, get_dummy_tc, get_dummy_env());
scope_trace_silent::scope_trace_silent(bool flag) {
m_old_value = g_silent;
g_silent = flag;
}
scope_trace_silent::~scope_trace_silent() {
g_silent = m_old_value;
}
io_state_stream tout() {
if (g_env && !g_silent) {
options opts = g_opts ? *g_opts : get_dummy_options();
io_state ios(get_global_ios(), opts);
return diagnostic(*g_env, ios, *g_ctx);
} else {
return diagnostic(get_dummy_env(), get_silent_ios_helper().m_ios, get_dummy_tc());
}
}
io_state_stream const & operator<<(io_state_stream const & ios, tdepth const &) {
ios << g_depth << ". ";
return ios;
}
io_state_stream const & operator<<(io_state_stream const & ios, tclass const & c) {
ios << "[" << c.m_cls << "] ";
return ios;
}
void initialize_trace() {
g_trace_as_messages = new name {"trace", "as_messages"};
register_trace_class(name{"debug"});
}
void finalize_trace() {
delete g_trace_as_messages;
}
pos_info get_trace_msg_pos() {
return g_trace_msg_pos ? *g_trace_msg_pos : pos_info(0, 0);
}
scope_traces_as_messages::scope_traces_as_messages(std::string const & stream_name, pos_info const & pos) :
flet<pos_info *>(g_trace_msg_pos, &m_pos), m_stream_name(stream_name), m_pos(pos) {
if (get_global_ios().get_options().get_bool(*g_trace_as_messages, false)) {
m_redirected_ios = std::unique_ptr<io_state>(new io_state(get_global_ios()));
m_buffer = std::make_shared<string_output_channel>();
m_redirected_ios->set_regular_channel(m_buffer);
m_redirected_ios->set_diagnostic_channel(m_buffer);
m_scoped_ios = std::unique_ptr<scope_global_ios>(new scope_global_ios(*m_redirected_ios));
}
}
scope_traces_as_messages::scope_traces_as_messages(pos_info_provider const *provider, expr const &ref) :
scope_traces_as_messages(provider ? provider->get_file_name() : "<unknown>",
provider ? provider->get_pos_info_or_some(ref) : pos_info(1, 0)) {}
scope_traces_as_messages::~scope_traces_as_messages() {
if (enabled()) {
auto msg = m_buffer->str();
if (!msg.empty()) {
auto redirected_output = m_buffer->str();
if (!redirected_output.empty())
report_message(message(
m_stream_name, m_pos, INFORMATION, "trace output", redirected_output));
}
}
}
scope_traces_as_string::scope_traces_as_string() {
m_redirected_ios = std::unique_ptr<io_state>(new io_state(get_global_ios()));
m_buffer = std::make_shared<string_output_channel>();
m_redirected_ios->set_regular_channel(m_buffer);
m_redirected_ios->set_diagnostic_channel(m_buffer);
m_scoped_ios = std::unique_ptr<scope_global_ios>(new scope_global_ios(*m_redirected_ios));
}
scope_traces_as_string::~scope_traces_as_string() {
}
}