示例#1
0
environment namespace_cmd(parser & p) {
    auto pos = p.pos();
    name n = p.check_atomic_id_next("invalid namespace declaration, atomic identifier expected");
    if (is_root_namespace(n))
        throw parser_error(sstream() << "invalid namespace name, '" << n << "' is reserved", pos);
    return push_scope(p.env(), p.ios(), n);
}
示例#2
0
environment coercion_cmd(parser & p) {
    auto pos = p.pos();
    expr f   = p.parse_expr();
    if (!is_constant(f))
        throw parser_error("invalid 'coercion' command, constant expected", pos);
    if (p.curr_is_token(g_colon)) {
        p.next();
        pos = p.pos();
        expr C = p.parse_expr();
        if (!is_constant(C))
            throw parser_error("invalid 'coercion' command, constant expected", pos);
        return add_coercion(p.env(), const_name(f), const_name(C), p.ios());
    } else {
        return add_coercion(p.env(), const_name(f), p.ios());
    }
}
示例#3
0
// using [class] id (id ...) (renaming id->id id->id) (hiding id ... id)
environment using_cmd(parser & p) {
    environment env = p.env();
    while (true) {
        name cls = parse_class(p);
        bool decls = cls.is_anonymous() || cls == g_decls || cls == g_declarations;
        auto pos   = p.pos();
        name ns    = p.check_id_next("invalid 'using' command, identifier expected");
        optional<name> real_ns = to_valid_namespace_name(env, ns);
        if (!real_ns)
            throw parser_error(sstream() << "invalid namespace name '" << ns << "'", pos);
        ns = *real_ns;
        env = using_namespace(env, p.ios(), ns, cls);
        if (decls) {
            // Remark: we currently to not allow renaming and hiding of universe levels
            buffer<name> exceptions;
            bool found_explicit = false;
            while (p.curr_is_token(g_lparen)) {
                p.next();
                if (p.curr_is_token_or_id(g_renaming)) {
                    p.next();
                    while (p.curr_is_identifier()) {
                        name from_id = p.get_name_val();
                        p.next();
                        p.check_token_next(g_arrow, "invalid 'using' command renaming, '->' expected");
                        name to_id = p.check_id_next("invalid 'using' command renaming, identifier expected");
                        check_identifier(p, env, ns, from_id);
                        exceptions.push_back(from_id);
                        env = add_expr_alias(env, to_id, ns+from_id);
                    }
                } else if (p.curr_is_token_or_id(g_hiding)) {
                    p.next();
                    while (p.curr_is_identifier()) {
                        name id = p.get_name_val();
                        p.next();
                        check_identifier(p, env, ns, id);
                        exceptions.push_back(id);
                    }
                } else if (p.curr_is_identifier()) {
                    found_explicit = true;
                    while (p.curr_is_identifier()) {
                        name id = p.get_name_val();
                        p.next();
                        check_identifier(p, env, ns, id);
                        env = add_expr_alias(env, id, ns+id);
                    }
                } else {
                    throw parser_error("invalid 'using' command option, identifier, 'hiding' or 'renaming' expected", p.pos());
                }
                if (found_explicit && !exceptions.empty())
                    throw parser_error("invalid 'using' command option, mixing explicit and implicit 'using' options", p.pos());
                p.check_token_next(g_rparen, "invalid 'using' command option, ')' expected");
            }
            if (!found_explicit)
                env = add_aliases(env, ns, name(), exceptions.size(), exceptions.data());
        }
        if (!p.curr_is_token(g_lbracket) && !p.curr_is_identifier())
            break;
    }
    return env;
}
示例#4
0
environment check_cmd(parser & p) {
    expr e   = p.parse_expr();
    list<expr> ctx = locals_to_context(e, p);
    level_param_names ls = to_level_param_names(collect_univ_params(e));
    level_param_names new_ls;
    std::tie(e, new_ls) = p.elaborate_relaxed(e, ctx);
    auto tc = mk_type_checker_with_hints(p.env(), p.mk_ngen(), true);
    expr type = tc->check(e, append(ls, new_ls));
    auto reg              = p.regular_stream();
    formatter const & fmt = reg.get_formatter();
    options opts          = p.ios().get_options();
    unsigned indent       = get_pp_indent(opts);
    format r = group(format{fmt(e), space(), colon(), nest(indent, compose(line(), fmt(type)))});
    reg << mk_pair(r, opts) << endl;
    return p.env();
}
示例#5
0
environment print_cmd(parser & p) {
    if (p.curr() == scanner::token_kind::String) {
        p.regular_stream() << p.get_str_val() << endl;
        p.next();
    } else if (p.curr_is_token_or_id(g_raw)) {
        p.next();
        expr e = p.parse_expr();
        p.regular_stream() << e << endl;
    } else if (p.curr_is_token_or_id(g_options)) {
        p.next();
        p.regular_stream() << p.ios().get_options() << endl;
    } else {
        throw parser_error("invalid print command", p.pos());
    }
    return p.env();
}
示例#6
0
environment section_cmd(parser & p) {
    p.push_local_scope();
    return push_scope(p.env(), p.ios());
}