49 lines
1.6 KiB
C++
49 lines
1.6 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 <utility>
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#include "util/sexpr/option_declarations.h"
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#include "kernel/formatter.h"
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#ifndef LEAN_DEFAULT_FORMATTER_HIDE_FULL_TERMS
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#define LEAN_DEFAULT_FORMATTER_HIDE_FULL_TERMS false
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#endif
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namespace lean {
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static name * g_formatter_hide_full = nullptr;
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name const & get_formatter_hide_full_terms_name() { return *g_formatter_hide_full; }
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bool get_formatter_hide_full_terms(options const & opts) { return opts.get_bool(*g_formatter_hide_full, LEAN_DEFAULT_FORMATTER_HIDE_FULL_TERMS); }
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static std::function<void(std::ostream &, expr const & e)> * g_print = nullptr;
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void set_print_fn(std::function<void(std::ostream &, expr const &)> const & fn) {
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delete g_print;
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g_print = new std::function<void(std::ostream &, expr const &)>(fn);
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}
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std::ostream & operator<<(std::ostream & out, expr const & e) {
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if (g_print) {
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(*g_print)(out, e);
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} else {
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throw exception("print function is not available, Lean was not initialized correctly");
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}
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return out;
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}
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void print(lean::expr const & a) { std::cout << a << std::endl; }
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void initialize_formatter() {
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g_formatter_hide_full = new name{"formatter", "hide_full_terms"};
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register_bool_option(*g_formatter_hide_full, LEAN_DEFAULT_FORMATTER_HIDE_FULL_TERMS,
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"(formatter) replace terms which do not contain metavariables with `...`");
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}
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void finalize_formatter() {
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delete g_formatter_hide_full;
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delete g_print;
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}
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}
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