165 lines
6.7 KiB
C++
165 lines
6.7 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 <limits>
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#include <utility>
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#include "util/pair.h"
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#include "library/attribute_manager.h"
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#include "frontends/lean/token_table.h"
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namespace lean {
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static unsigned g_arrow_prec = 25;
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static unsigned g_max_prec = 1024;
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static unsigned g_Max_prec = 1024*1024;
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static unsigned g_plus_prec = 65;
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unsigned get_max_prec() { return g_max_prec; }
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unsigned get_Max_prec() { return g_Max_prec; }
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unsigned get_arrow_prec() { return g_arrow_prec; }
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static token_table update(token_table const & s, char const * token, char const * val,
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optional<unsigned> expr_prec, optional<unsigned> tac_prec) {
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lean_assert(expr_prec || tac_prec);
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token_info info(token, val, 0, 0);
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if (token_info const * old_info = find(s, token)) {
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info = info.update_expr_precedence(old_info->expr_precedence());
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info = info.update_tactic_precedence(old_info->tactic_precedence());
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}
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if (expr_prec)
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info = info.update_expr_precedence(*expr_prec);
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if (tac_prec)
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info = info.update_tactic_precedence(*tac_prec);
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return insert(s, token, info);
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}
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token_table add_command_token(token_table const & s, char const * token) {
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return insert(s, token, token_info(token));
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}
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token_table add_command_token(token_table const & s, char const * token, char const * val) {
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return insert(s, token, token_info(token, val));
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}
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token_table add_token(token_table const & s, char const * token, unsigned prec) {
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return update(s, token, token, optional<unsigned>(prec), optional<unsigned>());
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}
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token_table add_token(token_table const & s, char const * token, char const * val, unsigned prec) {
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return update(s, token, val, optional<unsigned>(prec), optional<unsigned>());
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}
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token_table add_tactic_token(token_table const & s, char const * token, unsigned prec) {
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return update(s, token, token, optional<unsigned>(), optional<unsigned>(prec));
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}
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token_table add_tactic_token(token_table const & s, char const * token, char const * val, unsigned prec) {
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return update(s, token, val, optional<unsigned>(), optional<unsigned>(prec));
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}
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token_table const * find(token_table const & s, char c) {
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return s.find(c);
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}
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token_info const * value_of(token_table const & s) {
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return s.value();
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}
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optional<unsigned> get_expr_precedence(token_table const & s, char const * token) {
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auto it = find(s, token);
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return it ? optional<unsigned>(it->expr_precedence()) : optional<unsigned>();
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}
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optional<unsigned> get_tactic_precedence(token_table const & s, char const * token) {
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auto it = find(s, token);
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return it ? optional<unsigned>(it->tactic_precedence()) : optional<unsigned>();
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}
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bool is_token(token_table const & s, char const * token) {
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return static_cast<bool>(find(s, token));
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}
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void for_each(token_table const & s, std::function<void(char const *, token_info const &)> const & fn) {
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s.for_each([&](unsigned num, char const * keys, token_info const & info) {
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buffer<char> str;
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str.append(num, keys);
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str.push_back(0);
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fn(str.data(), info);
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});
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}
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void init_token_table(token_table & t) {
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pair<char const *, unsigned> builtin[] =
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{{"fun", 0}, {"Pi", 0}, {"let", 0}, {"in", 0}, {"at", 0},
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{"have", 0}, {"assume", 0}, {"show", 0}, {"suffices", 0},
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{"do", 0}, {"if", 0}, {"then", 0}, {"else", 0}, {"by", 0},
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{"hiding", 0}, {"replacing", 0}, {"renaming", 0},
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{"from", 0}, {"(", g_max_prec}, {"`(", g_max_prec}, {"``(", g_max_prec},
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{"```(", g_max_prec}, {"`[", g_max_prec}, {"`", g_max_prec},
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{"%%", g_max_prec}, {"()", g_max_prec}, {"(::)", g_max_prec}, {")", 0}, {"'", 0},
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{"{", g_max_prec}, {"}", 0}, {"_", g_max_prec},
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{"[", g_max_prec}, {"]", 0}, {"⦃", g_max_prec}, {"⦄", 0}, {".{", 0},
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{"{!", g_max_prec}, {"!}", 0},
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{"Type", g_max_prec}, {"Type*", g_max_prec}, {"Sort", g_max_prec}, {"Sort*", g_max_prec},
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{"(:", g_max_prec}, {":)", 0}, {".(", g_max_prec}, {"._", g_max_prec},
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{"⟨", g_max_prec}, {"⟩", 0}, {"^", 0},
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{"//", 0}, {"|", 0}, {"with", 0}, {"without", 0}, {"..", 0}, {"...", 0}, {",", 0},
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{".", 0}, {":", 0}, {"!", 0}, {":=", 0}, {"--", 0}, {"#", g_max_prec},
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{"/-", 0}, {"/--", 0}, {"/-!", 0}, {"begin", g_max_prec}, {"using", 0},
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{"@@", g_max_prec}, {"@", g_max_prec}, {"@&", g_max_prec},
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{"sorry", g_max_prec}, {"+", g_plus_prec}, {"->", g_arrow_prec}, {"<-", 0},
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{"match", 0}, {"^.", g_max_prec+1}, {"::", 67},
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{"renaming", 0}, {"extends", 0}, {"node!", g_max_prec}, {"nodeChoice!", g_max_prec},
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{"nodeLongestChoice!", g_max_prec}, {nullptr, 0}};
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char const * commands[] =
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{"theorem", "axiom", "variable", "protected", "private", "hide",
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"def", "unsafe", "partial", "mutual", "example", "noncomputable", "abbreviation", "abbrev",
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"variables", "constant", "using_well_founded", "[whnf]",
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"end", "namespace", "section", "prelude",
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"import", "inductive", "coinductive", "structure", "class", "universe", "universes", "local",
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"precedence", "reserve", "infixl", "infixr", "infix", "postfix", "prefix", "notation",
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"set_option", "open", "export", "@[",
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"attribute", "instance", "include", "omit", "initQuot",
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"run_cmd", "#check", "#reduce", "#eval", "#print", "#help", "#exit",
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"#compile", "#unify", "#compact_tst", nullptr};
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pair<char const *, char const *> aliases[] =
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{{"λ", "fun"}, {"forall", "Pi"},
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{"∀", "Pi"}, {"Π", "Pi"}, {"(|", "⟨"}, {"|)", "⟩"}, {nullptr, nullptr}};
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pair<char const *, char const *> cmd_aliases[] =
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{{nullptr, nullptr}};
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auto it = builtin;
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while (it->first) {
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t = add_token(t, it->first, it->second);
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it++;
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}
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auto it2 = commands;
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while (*it2) {
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t = add_command_token(t, *it2);
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++it2;
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}
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auto it3 = aliases;
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while (it3->first) {
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t = add_token(t, it3->first, it3->second, 0);
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it3++;
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}
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t = add_token(t, "→", "->", get_arrow_prec());
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t = add_token(t, "←", "<-", 0);
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auto it4 = cmd_aliases;
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while (it4->first) {
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t = add_command_token(t, it4->first, it4->second);
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++it4;
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}
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}
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static token_table * g_default_token_table = nullptr;
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token_table mk_default_token_table() {
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return *g_default_token_table;
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}
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void initialize_token_table() {
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g_default_token_table = new token_table();
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init_token_table(*g_default_token_table);
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}
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void finalize_token_table() {
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delete g_default_token_table;
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}
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token_table mk_token_table() { return token_table(); }
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}
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