33 lines
1.8 KiB
C++
33 lines
1.8 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 "kernel/expr.h"
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#include "kernel/formatter.h"
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namespace lean {
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format pp_indent_expr(formatter const & fmt, expr const & e);
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format pp_type_expected(formatter const & fmt, expr const & e);
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format pp_function_expected(formatter const & fmt, expr const & e);
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format pp_app_type_mismatch(formatter const & fmt, expr const & app, expr const & arg, expr const & expected_type, expr const & given_type);
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format pp_def_type_mismatch(formatter const & fmt, name const & n, expr const & expected_type, expr const & given_type);
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format pp_decl_has_metavars(formatter const & fmt, name const & n, expr const & e, bool is_type);
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/** \brief Set a list extra configuration options that are used to try to distinguish error such as given/expected type mismatch
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This is a trick used to avoid cryptic error messages when to types seem identical because the pretty printer is suppressing
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universes and/or implicit arguments. The error messages will keep using these extra options until it finds one that
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can distinguish given/expected type. The extra options do not override user provided options.
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\remark This is a thread local information.
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\remark Consider using #scoped_set_distinguishing_pp_options
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*/
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list<options> set_distinguishing_pp_options(list<options> const & opts);
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struct scoped_set_distinguishing_pp_options {
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list<options> m_old;
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scoped_set_distinguishing_pp_options(list<options> const & os):m_old(set_distinguishing_pp_options(os)) {}
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~scoped_set_distinguishing_pp_options() { set_distinguishing_pp_options(m_old); }
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};
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std::tuple<format, format> pp_until_different(formatter const & fmt, expr const & e1, expr const & e2);
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}
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