261 lines
8.3 KiB
C++
261 lines
8.3 KiB
C++
/*
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Copyright (c) 2014 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 <string>
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#include "util/sstream.h"
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#include "util/list_fn.h"
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#include "library/scoped_ext.h"
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#include "library/kernel_serializer.h"
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#include "frontends/lean/parser_config.h"
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#include "frontends/lean/builtin_exprs.h"
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#include "frontends/lean/builtin_cmds.h"
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namespace lean {
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using notation::transition;
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using notation::action;
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using notation::action_kind;
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notation_entry replace(notation_entry const & e, std::function<expr(expr const &)> const & f) {
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return notation_entry(e.m_is_nud,
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map(e.m_transitions, [&](transition const & t) { return notation::replace(t, f); }),
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f(e.m_expr),
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e.m_overload);
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}
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struct token_state {
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token_table m_table;
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token_state() { m_table = mk_default_token_table(); }
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};
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struct token_config {
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typedef token_state state;
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typedef token_entry entry;
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static void add_entry(environment const &, io_state const &, state & s, entry const & e) {
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s.m_table = add_token(s.m_table, e.m_token.c_str(), e.m_prec);
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}
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static name const & get_class_name() {
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static name g_class_name("notation");
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return g_class_name;
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}
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static std::string const & get_serialization_key() {
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static std::string g_key("tk");
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return g_key;
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}
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static void write_entry(serializer & s, entry const & e) {
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s << e.m_token.c_str() << e.m_prec;
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}
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static entry read_entry(deserializer & d) {
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std::string tk = d.read_string();
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unsigned prec = d.read_unsigned();
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return entry(tk, prec);
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}
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};
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template class scoped_ext<token_config>;
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typedef scoped_ext<token_config> token_ext;
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environment add_token(environment const & env, token_entry const & e) {
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return token_ext::add_entry(env, get_dummy_ios(), e);
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}
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environment add_token(environment const & env, char const * val, unsigned prec) {
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return add_token(env, token_entry(val, prec));
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}
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token_table const & get_token_table(environment const & env) {
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return token_ext::get_state(env).m_table;
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}
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serializer & operator<<(serializer & s, action const & a) {
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s << static_cast<char>(a.kind());
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switch (a.kind()) {
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case action_kind::Skip: case action_kind::Binder: case action_kind::Binders:
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break;
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case action_kind::Expr:
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s << a.rbp();
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break;
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case action_kind::Exprs:
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s << a.get_sep() << a.get_rec() << a.get_initial() << a.is_fold_right() << a.rbp();
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if (auto t = a.get_terminator()) {
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s << true << *t;
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} else {
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s << false;
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}
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break;
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case action_kind::ScopedExpr:
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s << a.get_rec() << a.rbp() << a.use_lambda_abstraction();
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break;
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case action_kind::LuaExt:
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s << a.get_lua_fn();
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break;
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case action_kind::Ext:
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lean_unreachable();
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}
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return s;
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}
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action read_action(deserializer & d) {
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action_kind k = static_cast<action_kind>(d.read_char());
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unsigned rbp;
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switch (k) {
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case action_kind::Skip:
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return notation::mk_skip_action();
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case action_kind::Binder:
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return notation::mk_binder_action();
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case action_kind::Binders:
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return notation::mk_binders_action();
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case action_kind::Expr:
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d >> rbp;
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return notation::mk_expr_action(rbp);
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case action_kind::Exprs: {
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name sep; expr rec, ini; bool is_fold_right;
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d >> sep >> rec >> ini >> is_fold_right >> rbp;
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optional<name> terminator;
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if (d.read_bool())
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terminator = read_name(d);
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return notation::mk_exprs_action(sep, rec, ini, terminator, is_fold_right, rbp);
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}
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case action_kind::ScopedExpr: {
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expr rec; bool use_lambda_abstraction;
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d >> rec >> rbp >> use_lambda_abstraction;
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return notation::mk_scoped_expr_action(rec, rbp, use_lambda_abstraction);
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}
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case action_kind::LuaExt:
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return notation::mk_ext_lua_action(d.read_string().c_str());
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case action_kind::Ext:
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break;
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}
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lean_unreachable();
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}
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serializer & operator<<(serializer & s, transition const & t) {
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s << t.get_token() << t.get_action();
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return s;
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}
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transition read_transition(deserializer & d) {
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name n = read_name(d);
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action a = read_action(d);
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return transition(n, a);
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}
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struct notation_state {
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parse_table m_nud;
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parse_table m_led;
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notation_state() {
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m_nud = get_builtin_nud_table();
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m_led = get_builtin_led_table();
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}
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};
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struct notation_config {
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typedef notation_state state;
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typedef notation_entry entry;
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static void add_entry(environment const &, io_state const &, state & s, entry const & e) {
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buffer<transition> ts;
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to_buffer(e.m_transitions, ts);
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if (e.m_is_nud)
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s.m_nud = s.m_nud.add(ts.size(), ts.data(), e.m_expr, e.m_overload);
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else
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s.m_led = s.m_led.add(ts.size(), ts.data(), e.m_expr, e.m_overload);
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}
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static name const & get_class_name() {
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static name g_class_name("notation");
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return g_class_name;
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}
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static std::string const & get_serialization_key() {
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static std::string g_key("nota");
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return g_key;
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}
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static void write_entry(serializer & s, entry const & e) {
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s << e.m_is_nud << e.m_overload << e.m_expr;
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s << length(e.m_transitions);
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for (auto const & t : e.m_transitions)
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s << t;
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}
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static entry read_entry(deserializer & d) {
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bool is_nud, overload; expr e;
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d >> is_nud >> overload >> e;
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unsigned sz;
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d >> sz;
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buffer<transition> ts;
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for (unsigned i = 0; i < sz; i++)
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ts.push_back(read_transition(d));
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return entry(is_nud, to_list(ts.begin(), ts.end()), e, overload);
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}
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};
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template class scoped_ext<notation_config>;
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typedef scoped_ext<notation_config> notation_ext;
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environment add_notation(environment const & env, notation_entry const & e) {
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return notation_ext::add_entry(env, get_dummy_ios(), e);
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}
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environment add_nud_notation(environment const & env, unsigned num, notation::transition const * ts, expr const & a, bool overload) {
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return add_notation(env, notation_entry(true, to_list(ts, ts+num), a, overload));
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}
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environment add_led_notation(environment const & env, unsigned num, notation::transition const * ts, expr const & a, bool overload) {
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return add_notation(env, notation_entry(false, to_list(ts, ts+num), a, overload));
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}
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environment add_nud_notation(environment const & env, std::initializer_list<notation::transition> const & ts, expr const & a, bool overload) {
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return add_nud_notation(env, ts.size(), ts.begin(), a, overload);
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}
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environment add_led_notation(environment const & env, std::initializer_list<notation::transition> const & ts, expr const & a, bool overload) {
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return add_led_notation(env, ts.size(), ts.begin(), a, overload);
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}
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environment overwrite_notation(environment const & env, name const & n) {
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environment r = env;
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bool found = false;
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if (auto it = token_ext::get_entries(r, n)) {
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found = true;
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for (token_entry e : *it) {
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r = add_token(r, e);
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}
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}
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if (auto it = notation_ext::get_entries(env, n)) {
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found = true;
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for (notation_entry e : *it) {
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e.m_overload = false;
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r = add_notation(r, e);
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}
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}
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if (!found)
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throw exception(sstream() << "unknown namespace '" << n << "'");
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return r;
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}
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parse_table const & get_nud_table(environment const & env) {
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return notation_ext::get_state(env).m_nud;
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}
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parse_table const & get_led_table(environment const & env) {
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return notation_ext::get_state(env).m_led;
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}
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struct cmd_ext : public environment_extension {
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cmd_table m_cmds;
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cmd_ext() {
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m_cmds = get_builtin_cmds();
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}
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};
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struct cmd_ext_reg {
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unsigned m_ext_id;
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cmd_ext_reg() { m_ext_id = environment::register_extension(std::make_shared<cmd_ext>()); }
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};
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static cmd_ext_reg g_ext;
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static cmd_ext const & get_extension(environment const & env) {
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return static_cast<cmd_ext const &>(env.get_extension(g_ext.m_ext_id));
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}
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cmd_table const & get_cmd_table(environment const & env) {
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return get_extension(env).m_cmds;
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}
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}
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