50 lines
2 KiB
C++
50 lines
2 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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#pragma once
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#include <utility>
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#include <string>
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#include "util/trie.h"
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#include "util/name.h"
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#include "util/lua.h"
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namespace lean {
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unsigned get_max_prec();
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unsigned get_arrow_prec();
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class token_info {
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bool m_command;
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name m_token;
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name m_value;
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unsigned m_precedence;
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public:
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token_info():m_command(true) {}
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token_info(char const * val):
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m_command(true), m_token(val), m_value(val), m_precedence(0) {}
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token_info(char const * token, char const * val):
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m_command(true), m_token(token), m_value(val), m_precedence(0) {}
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token_info(char const * val, unsigned prec):
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m_command(false), m_token(val), m_value(val), m_precedence(prec) {}
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token_info(char const * token, char const * val, unsigned prec):
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m_command(false), m_token(token), m_value(val), m_precedence(prec) {}
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bool is_command() const { return m_command; }
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name const & token() const { return m_token; }
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name const & value() const { return m_value; }
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unsigned precedence() const { return m_precedence; }
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};
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typedef ctrie<token_info> token_table;
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token_table mk_token_table();
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token_table mk_default_token_table();
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token_table add_command_token(token_table const & s, char const * token);
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token_table add_command_token(token_table const & s, char const * token, char const * val);
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token_table add_token(token_table const & s, char const * token, unsigned prec = 0);
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token_table add_token(token_table const & s, char const * token, char const * val, unsigned prec = 0);
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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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token_table const * find(token_table const & s, char c);
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optional<unsigned> get_precedence(token_table const & s, char const * token);
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token_info const * value_of(token_table const & s);
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void open_token_table(lua_State * L);
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}
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