41 lines
1.3 KiB
C++
41 lines
1.3 KiB
C++
/*
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Copyright (c) 2013 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/io_state.h"
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#include "kernel/kernel_decls.h"
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namespace lean {
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// See src/builtin/kernel.lean for signatures.
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extern expr const TypeU;
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extern expr const TypeU1; // Type (U+1)
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/** \brief Return the Lean Boolean type. */
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expr mk_bool_type();
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extern expr const Bool;
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bool is_bool(expr const & e);
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/** \brief Create a Lean Boolean value (true/false) */
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expr mk_bool_value(bool v);
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extern expr const True;
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extern expr const False;
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/** \brief Return true iff \c e is a Lean Boolean value. */
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bool is_bool_value(expr const & e);
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/**
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\brief Convert a Lean Boolean value into a C++ Boolean value.
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\pre is_bool_value(e)
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*/
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bool to_bool(expr const & e);
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inline expr Implies(expr const & e1, expr const & e2) { return mk_implies(e1, e2); }
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inline expr And(expr const & e1, expr const & e2) { return mk_and(e1, e2); }
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inline expr Or(expr const & e1, expr const & e2) { return mk_or(e1, e2); }
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inline expr Not(expr const & e) { return mk_not(e); }
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inline expr Exists(expr const & A, expr const & P) { return mk_exists(A, P); }
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// inline expr hEq(expr const & A, expr const & l, expr const & r) { return mk_eq(A, l, r); }
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void import_kernel(environment const & env, io_state const & ios);
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}
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