addbb8dd67
@cipher1024 I modified your fix. It would produce memory leaks if the code executed by #eval modifies the stdout. Here is the problem. - Your replaces the handler with some new handler `H` and stores the old handler `O` in a `flet`. - Code is executed and replaces the stdout handler with `H'`. The `H`s RC is decremented and `H'`s RC is incremeneted. So far, so good. - Now, the destructor of your `flet` is executed, and it replaces `H'` with `O`, but `H'` RC is not decremented.
557 lines
21 KiB
C++
557 lines
21 KiB
C++
/*
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Copyright (c) 2014-2015 Microsoft Corporation. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Author: Leonardo de Moura
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*/
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#include <algorithm>
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#include <string>
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#include <vector>
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#include "runtime/sstream.h"
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#include "runtime/compact.h"
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#include "util/timeit.h"
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#include "util/io.h"
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#include "util/option_declarations.h"
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#include "kernel/replace_fn.h"
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#include "kernel/find_fn.h"
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#include "kernel/instantiate.h"
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#include "kernel/abstract.h"
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#include "library/trace.h"
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#include "library/aliases.h"
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#include "library/export_decl.h"
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#include "library/protected.h"
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#include "library/constants.h"
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#include "library/app_builder.h"
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#include "library/class.h"
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#include "library/pp_options.h"
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#include "library/aux_recursors.h"
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#include "library/private.h"
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#include "library/type_context.h"
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#include "library/reducible.h"
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#include "library/placeholder.h"
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#include "library/compiler/compiler.h"
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#include "frontends/lean/util.h"
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#include "frontends/lean/parser.h"
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#include "frontends/lean/notation_cmd.h"
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#include "frontends/lean/elaborator.h"
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#include "frontends/lean/inductive_cmds.h"
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#include "frontends/lean/structure_cmd.h"
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#include "frontends/lean/print_cmd.h"
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#include "frontends/lean/decl_cmds.h"
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#include "frontends/lean/tokens.h"
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#include "frontends/lean/parse_table.h"
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#include "frontends/lean/decl_attributes.h"
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#include "frontends/lean/typed_expr.h"
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#include "library/compiler/ir_interpreter.h"
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#include "library/time_task.h"
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namespace lean {
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environment section_cmd(parser & p) {
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name n;
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if (p.curr_is_identifier())
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n = p.check_atomic_id_next("invalid section, atomic identifier expected");
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p.push_local_scope();
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return push_scope(p.env(), p.ios(), scope_kind::Section, n);
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}
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// Execute open command
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environment execute_open(environment env, io_state const & ios, export_decl const & edecl);
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environment replay_export_decls_core(environment env, io_state const & ios, unsigned old_sz) {
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list<export_decl> new_export_decls = get_active_export_decls(env);
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unsigned new_sz = length(new_export_decls);
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lean_assert(new_sz >= old_sz);
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unsigned i = 0;
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for (export_decl const & d : new_export_decls) {
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if (i >= new_sz - old_sz)
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break;
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env = execute_open(env, ios, d);
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i++;
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}
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return env;
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}
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environment replay_export_decls_core(environment env, io_state const & ios) {
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return replay_export_decls_core(env, ios, 0);
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}
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environment execute_open(environment env, io_state const & ios, export_decl const & edecl) {
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unsigned fingerprint = 0;
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name const & ns = edecl.m_ns;
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fingerprint = hash(fingerprint, ns.hash());
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unsigned old_export_decls_sz = length(get_active_export_decls(env));
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env = activate_export_decls(env, ns);
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for (auto const & p : edecl.m_renames) {
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fingerprint = hash(hash(fingerprint, p.first.hash()), p.second.hash());
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env = add_expr_alias(env, p.first, p.second);
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}
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for (auto const & n : edecl.m_except_names) {
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fingerprint = hash(fingerprint, n.hash());
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}
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if (!edecl.m_had_explicit) {
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buffer<name> except_names;
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to_buffer(edecl.m_except_names, except_names);
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env = add_aliases(env, ns, edecl.m_as, except_names.size(), except_names.data());
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}
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return replay_export_decls_core(env, ios, old_export_decls_sz);
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}
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environment namespace_cmd(parser & p) {
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name n = p.check_decl_id_next("invalid namespace declaration, identifier expected");
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p.push_local_scope();
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unsigned old_export_decls_sz = length(get_active_export_decls(p.env()));
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environment env = push_scope(p.env(), p.ios(), scope_kind::Namespace, n);
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env = activate_export_decls(env, get_namespace(env));
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return replay_export_decls_core(env, p.ios(), old_export_decls_sz);
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}
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static environment redeclare_aliases(environment env, parser & p,
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local_level_decls old_level_decls,
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list<pair<name, expr>> old_entries) {
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environment const & old_env = p.env();
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if (!in_section(old_env))
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return env;
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list<pair<name, expr>> new_entries = p.get_local_entries();
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unsigned new_len = length(new_entries);
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unsigned old_len = length(old_entries);
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lean_assert(old_len >= new_len);
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name_set popped_locals;
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while (old_len > new_len) {
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pair<name, expr> entry = head(old_entries);
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if (is_local_p(entry.second))
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popped_locals.insert(local_name_p(entry.second));
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old_entries = tail(old_entries);
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old_len--;
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}
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name_set popped_levels;
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local_level_decls level_decls = p.get_local_level_decls();
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old_level_decls.for_each([&](name const & n, level const & l) {
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if (is_param(l) && !is_placeholder(l) && !level_decls.contains(n))
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popped_levels.insert(param_id(l));
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});
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return env;
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}
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environment end_scoped_cmd(parser & p) {
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local_level_decls level_decls = p.get_local_level_decls();
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list<pair<name, expr>> entries = p.get_local_entries();
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if (!p.has_local_scopes()) {
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throw exception("invalid 'end', there is no open namespace/section");
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}
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p.pop_local_scope();
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if (p.curr_is_identifier()) {
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name n;
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n = p.check_id_next("invalid end of scope, identifier expected");
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environment env = pop_scope(p.env(), p.ios(), n);
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return redeclare_aliases(env, p, level_decls, entries);
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} else {
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environment env = pop_scope(p.env(), p.ios());
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return redeclare_aliases(env, p, level_decls, entries);
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}
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}
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/* Auxiliary class to setup private naming scope for transient commands such as #check/#reduce/#eval and run_cmd */
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class transient_cmd_scope {
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environment m_env;
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private_name_scope m_prv_scope;
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public:
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transient_cmd_scope(parser & p):
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m_env(p.env()),
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m_prv_scope(true, m_env) {
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p.set_env(m_env);
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}
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};
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environment check_cmd(parser & p) {
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expr e; names ls;
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transient_cmd_scope cmd_scope(p);
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std::tie(e, ls) = parse_local_expr(p, "_check");
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type_context_old tc(p.env());
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expr type = tc.infer(e);
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if (is_synthetic_sorry(e) && (is_synthetic_sorry(type) || is_metavar(type))) {
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// do not show useless type-checking results such as ?? : ?M_1
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return p.env();
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}
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auto out = p.mk_message(p.cmd_pos(), p.pos(), INFORMATION);
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formatter fmt = out.get_formatter();
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unsigned indent = get_pp_indent(p.get_options());
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format e_fmt = fmt(e);
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format type_fmt = fmt(type);
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format r = group(e_fmt + space() + format(":") + nest(indent, line() + type_fmt));
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out.set_caption("check result") << r;
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out.report();
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return p.env();
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}
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environment exit_cmd(parser & p) {
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(p.mk_message(p.cmd_pos(), WARNING) << "using 'exit' to interrupt Lean").report();
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throw interrupt_parser();
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}
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environment set_option_cmd(parser & p) {
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auto id_kind = parse_option_name(p, "invalid set option, identifier (i.e., option name) expected");
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name id = id_kind.first;
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data_value_kind k = id_kind.second;
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if (k == data_value_kind::Bool) {
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if (p.curr_is_token_or_id(get_true_tk()))
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p.set_option(id, true);
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else if (p.curr_is_token_or_id(get_false_tk()))
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p.set_option(id, false);
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else
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throw parser_error("invalid Boolean option value, 'true' or 'false' expected", p.pos());
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p.next();
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} else if (k == data_value_kind::String) {
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if (!p.curr_is_string())
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throw parser_error("invalid option value, given option is not a string", p.pos());
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p.set_option(id, p.get_str_val().c_str());
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p.next();
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} else if (k == data_value_kind::Nat) {
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p.set_option(id, p.parse_small_nat());
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} else {
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throw parser_error("invalid option value, 'true', 'false', string, integer or decimal value expected", p.pos());
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}
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return p.env();
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}
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static void check_identifier(parser & p, environment const & env, name const & ns, name const & id) {
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name full_id = ns + id;
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if (!env.find(full_id))
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throw parser_error(sstream() << "invalid 'open' command, unknown declaration '" << full_id << "'", p.pos());
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}
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extern "C" object * lean_add_alias(object * env, object * a, object * e);
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static environment add_lean4_alias(environment const & env, name const & a, name const & e) {
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return environment(lean_add_alias(env.to_obj_arg(), a.to_obj_arg(), e.to_obj_arg()));
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}
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// open/export id (as id)? (id ...) (renaming id->id id->id) (hiding id ... id)
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environment open_export_cmd(parser & p, bool open) {
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environment env = p.env();
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while (true) {
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auto pos = p.pos();
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name ns = p.check_id_next("invalid 'open/export' command, identifier expected");
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optional<name> real_ns = to_valid_namespace_name(env, ns);
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if (!real_ns)
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throw parser_error(sstream() << "invalid namespace name '" << ns << "'", pos);
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ns = *real_ns;
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name as;
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if (p.curr_is_token_or_id(get_as_tk())) {
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p.next();
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as = p.check_id_next("invalid 'open/export' command, identifier expected");
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}
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buffer<name> exception_names;
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buffer<pair<name, name>> renames;
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bool found_explicit = false;
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// Remark: we currently to not allow renaming and hiding of universe levels
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while (p.curr_is_token(get_lparen_tk())) {
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p.next();
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if (p.curr_is_token_or_id(get_renaming_tk())) {
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p.next();
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while (p.curr_is_identifier()) {
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name from_id = p.get_name_val();
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p.next();
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p.check_token_next(get_arrow_tk(), "invalid 'open/export' command renaming, '->' expected");
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name to_id = p.check_id_next("invalid 'open/export' command renaming, identifier expected");
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check_identifier(p, env, ns, from_id);
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exception_names.push_back(from_id);
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renames.emplace_back(as+to_id, ns+from_id);
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}
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} else if (p.curr_is_token_or_id(get_hiding_tk())) {
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p.next();
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while (p.curr_is_identifier()) {
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name id = p.get_name_val();
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p.next();
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check_identifier(p, env, ns, id);
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exception_names.push_back(id);
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}
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} else if (p.curr_is_identifier()) {
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found_explicit = true;
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while (p.curr_is_identifier()) {
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name id = p.get_name_val();
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p.next();
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check_identifier(p, env, ns, id);
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renames.emplace_back(as+id, ns+id);
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}
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} else {
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throw parser_error("invalid 'open/export' command option, "
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"identifier, 'hiding' or 'renaming' expected", p.pos());
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}
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if (found_explicit && !exception_names.empty())
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throw parser_error("invalid 'open/export' command option, "
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"mixing explicit and implicit 'open/export' options", p.pos());
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p.check_token_next(get_rparen_tk(), "invalid 'open/export' command option, ')' expected");
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}
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if (!open) {
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// Workaround for "exporting" old frontend exports to new frontend
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for (auto p : renames) {
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env = add_lean4_alias(env, p.first, p.second);
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}
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}
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export_decl edecl(ns, as, found_explicit, renames, exception_names);
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if (!open) {
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env = add_export_decl(env, edecl);
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}
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env = execute_open(env, p.ios(), edecl);
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if (!p.curr_is_identifier())
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break;
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}
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return env;
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}
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static environment open_cmd(parser & p) { return open_export_cmd(p, true); }
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static environment export_cmd(parser & p) { return open_export_cmd(p, false); }
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static environment init_quot_cmd(parser & p) {
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return p.env().add(mk_quot_decl());
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}
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environment import_cmd(parser & p) {
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throw parser_error("invalid 'import' command, it must be used in the beginning of the file", p.cmd_pos());
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}
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environment hide_cmd(parser & p) {
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buffer<name> ids;
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while (p.curr_is_identifier()) {
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name id = p.get_name_val();
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p.next();
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ids.push_back(id);
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}
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if (ids.empty())
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throw parser_error("invalid 'hide' command, identifier expected", p.cmd_pos());
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environment new_env = p.env();
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for (name id : ids) {
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if (get_expr_aliases(new_env, id)) {
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new_env = erase_expr_aliases(new_env, id);
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} else {
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/* TODO(Leo): check if `id` is a declaration and hide it too. */
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throw parser_error(sstream() << "invalid 'hide' command, '" << id << "' is not an alias",
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p.cmd_pos());
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}
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}
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return new_env;
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}
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struct stream_buffer_delete {
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void operator () (char ** buffer) {
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free(*buffer);
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}
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};
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obj_res lean_redirect_stdout(obj_arg new_stdout);
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lean_object * lean_io_wrap_handle(FILE *hfile);
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lean_object *& get_handle_current_stdout();
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struct redirect_helper {
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object_ref m_old_fp;
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redirect_helper(object_ref const & new_fp):
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m_old_fp(lean_redirect_stdout(new_fp.to_obj_arg())) {
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}
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~redirect_helper() {
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lean_dec(lean_redirect_stdout(m_old_fp.to_obj_arg()));
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}
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};
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static environment eval_cmd(parser & p) {
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transient_cmd_scope cmd_scope(p);
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auto pos = p.pos();
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expr e; names ls;
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std::tie(e, ls) = parse_local_expr(p, "_eval", /* relaxed */ false);
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if (has_synthetic_sorry(e))
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return p.env();
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type_context_old tc(p.env(), p.get_options());
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auto type = tc.infer(e);
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std::vector<object *> args;
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optional<expr> meta_eval_instance;
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try {
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expr meta_has_eval_type = mk_app(tc, {"Lean", "MetaHasEval"}, type);
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meta_eval_instance = tc.mk_class_instance(meta_has_eval_type);
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} catch (exception &) {}
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if (meta_eval_instance) {
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/* Modify the 'program' to (fun env opts => MetaHasEval.eval env opts e) */
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expr env = tc.push_local("env", mk_const({"Lean", "Environment"}));
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expr opts = tc.push_local("opts", mk_const({"Lean", "Options"}));
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e = tc.mk_lambda(env, tc.mk_lambda(opts,
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mk_app(tc, {"Lean", "MetaHasEval", "eval"}, 5,
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{type, *meta_eval_instance, env, opts, e})));
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// run `Environment -> Options -> IO Unit`
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args = { p.env().to_obj_arg(), p.get_options().to_obj_arg(), io_mk_world() };
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} else {
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optional<expr> eval_instance;
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try {
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expr has_eval_type = mk_app(tc, {"Lean", "HasEval"}, type);
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eval_instance = tc.mk_class_instance(has_eval_type);
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} catch (exception &) {}
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if (eval_instance) {
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/* Modify the 'program' to (HasEval.eval e) */
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e = mk_app(tc, {"Lean", "HasEval", "eval"}, 3, type, *eval_instance, e);
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// run `IO Unit`
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args = { io_mk_world() };
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} else {
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// NOTE: HasRepr implies HasEval
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// NOTE: could also mention MetaHasEval but probably shouldn't
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throw exception("result type does not have an instance of type class 'HasRepr' or 'Lean.HasEval'");
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}
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}
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name fn_name = "_main";
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type = tc.infer(e);
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auto new_env = compile_expr(p.env(), p.get_options(), fn_name, ls, type, e, pos);
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auto out = p.mk_message(p.cmd_pos(), p.pos(), INFORMATION);
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out.set_caption("eval result");
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scope_traces_as_messages scope_traces(p.get_stream_name(), p.cmd_pos());
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char * redirected; size_t redir_size;
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FILE * fp = open_memstream(&redirected, &redir_size);
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std::unique_ptr<char *, stream_buffer_delete> stream_buffer(&redirected);
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object_ref r;
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try {
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object_ref new_fp(lean_io_wrap_handle(fp));
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redirect_helper helper(new_fp);
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if (p.profiling()) {
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timeit timer(out.get_text_stream().get_stream(), "eval time");
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r = object_ref(ir::run_boxed(new_env, fn_name, args.size(), &args[0]));
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} else {
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r = object_ref(ir::run_boxed(new_env, fn_name, args.size(), &args[0]));
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}
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} catch (exception & ex) {
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out << redirected;
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out.report();
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throw ex;
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}
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out << redirected;
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out.report();
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if (io_result_is_error(r.raw())) {
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message_builder msg = p.mk_message(p.cmd_pos(), p.pos(), ERROR);
|
|
object * err = io_result_get_error(r.raw());
|
|
inc_ref(err);
|
|
object * str = lean_io_error_to_string(err);
|
|
msg << string_to_std(str);
|
|
msg.report();
|
|
dec_ref(str);
|
|
}
|
|
return p.env();
|
|
}
|
|
|
|
environment compact_tst_cmd(parser & p) {
|
|
environment env = p.env();
|
|
unsigned num_copies = 0;
|
|
if (p.curr_is_numeral())
|
|
num_copies = p.parse_small_nat();
|
|
buffer<expr> objects_to_write;
|
|
env.for_each_constant([&](constant_info const & d) {
|
|
for (unsigned i = 0; i < num_copies + 1; i++) {
|
|
objects_to_write.push_back(deep_copy(d.get_type()));
|
|
if (d.is_definition())
|
|
objects_to_write.push_back(deep_copy(d.get_value()));
|
|
}
|
|
});
|
|
tout() << "number of root objects: " << objects_to_write.size() << "\n";
|
|
{
|
|
std::ostringstream out;
|
|
object_compactor compactor;
|
|
{
|
|
timeit timer(out, "compacting objects");
|
|
for (expr const & e : objects_to_write) {
|
|
compactor(e.raw());
|
|
}
|
|
tout() << "compactor size: " << compactor.size() << "\n";
|
|
}
|
|
{
|
|
timeit timer(out, "saving file 'compact.out'");
|
|
FILE * fp = fopen("compact.out", "wb");
|
|
if (fp == nullptr) throw exception("failed to open file 'compact.out'");
|
|
size_t sz = compactor.size();
|
|
fwrite(&sz, sizeof(size_t), 1, fp);
|
|
if (fwrite(compactor.data(), 1, sz, fp) != sz)
|
|
throw exception("failed to write file 'compact.out'");
|
|
fclose(fp);
|
|
}
|
|
void * in_buffer;
|
|
size_t in_sz;
|
|
{
|
|
timeit timer(out, "reading file 'compact.out'");
|
|
FILE * fp = fopen("compact.out", "rb");
|
|
if (fp == nullptr) throw exception("failed to open file 'compact.out'");
|
|
if (fread(&in_sz, sizeof(size_t), 1, fp) != 1)
|
|
throw exception("failed to read file 'compact.out'");
|
|
in_buffer = malloc(in_sz);
|
|
if (fread(in_buffer, 1, in_sz, fp) != in_sz)
|
|
throw exception("failed to read file 'compact.out'");
|
|
fclose(fp);
|
|
}
|
|
compacted_region r(in_sz, in_buffer);
|
|
{
|
|
timeit timer(out, "compacted region fixing pointers time");
|
|
unsigned i = 0;
|
|
while (r.read() != nullptr) {
|
|
i++;
|
|
}
|
|
tout() << "number of read root objects: " << i << "\n";
|
|
}
|
|
tout() << out.str() << "\n";
|
|
}
|
|
{
|
|
std::ostringstream out;
|
|
std::ostringstream sout;
|
|
{
|
|
serializer s(sout);
|
|
timeit timer1(out, "serializing objects");
|
|
for (expr const & e : objects_to_write)
|
|
s << e;
|
|
tout() << "serialization size: " << sout.str().size() << "\n";
|
|
}
|
|
std::istringstream in(sout.str());
|
|
deserializer d(in);
|
|
{
|
|
timeit timer1(out, "deserializing objects");
|
|
for (unsigned i = 0; i < objects_to_write.size(); i++) {
|
|
d.read_object();
|
|
}
|
|
}
|
|
tout() << out.str() << "\n";
|
|
}
|
|
return env;
|
|
}
|
|
|
|
void init_cmd_table(cmd_table & r) {
|
|
add_cmd(r, cmd_info("open", "create aliases for declarations, and use objects defined in other namespaces",
|
|
open_cmd));
|
|
add_cmd(r, cmd_info("export", "create aliases for declarations", export_cmd));
|
|
add_cmd(r, cmd_info("set_option", "set configuration option", set_option_cmd));
|
|
add_cmd(r, cmd_info("#exit", "exit", exit_cmd));
|
|
add_cmd(r, cmd_info("#print", "print a string or information about an indentifier", print_cmd));
|
|
add_cmd(r, cmd_info("section", "open a new section", section_cmd));
|
|
add_cmd(r, cmd_info("namespace", "open a new namespace", namespace_cmd));
|
|
add_cmd(r, cmd_info("end", "close the current namespace/section", end_scoped_cmd));
|
|
add_cmd(r, cmd_info("#check", "type check given expression, and display its type", check_cmd));
|
|
add_cmd(r, cmd_info("init_quot", "initialize `quot` type computational rules", init_quot_cmd));
|
|
add_cmd(r, cmd_info("import", "import module(s)", import_cmd));
|
|
add_cmd(r, cmd_info("hide", "hide aliases in the current scope", hide_cmd));
|
|
add_cmd(r, cmd_info("#eval", "evaluate given expression using interpreter/precompiled code", eval_cmd));
|
|
register_decl_cmds(r);
|
|
register_inductive_cmds(r);
|
|
register_structure_cmd(r);
|
|
register_notation_cmds(r);
|
|
// register_tactic_hint_cmd(r);
|
|
}
|
|
|
|
static cmd_table * g_cmds = nullptr;
|
|
|
|
cmd_table get_builtin_cmds() {
|
|
return *g_cmds;
|
|
}
|
|
|
|
void initialize_builtin_cmds() {
|
|
g_cmds = new cmd_table();
|
|
init_cmd_table(*g_cmds);
|
|
}
|
|
|
|
void finalize_builtin_cmds() {
|
|
delete g_cmds;
|
|
}
|
|
}
|