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z3/src/ast/ast_lt.h
Nikolaj Bjorner d0e20e44ff booyah
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2020-07-04 15:56:30 -07:00

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/*++
Copyright (c) 2011 Microsoft Corporation
Module Name:
ast_lt.h
Abstract:
Total order on ASTs that does not depend on the internal ids.
Author:
Leonardo de Moura (leonardo) 2011-04-08
Revision History:
--*/
#pragma once
class ast;
bool lt(ast * n1, ast * n2);
bool is_sorted(unsigned num, expr * const * ns);
struct ast_to_lt {
bool operator()(ast * n1, ast * n2) const { return lt(n1, n2); }
};
struct ast_lt {
bool operator()(ast * n1, ast * n2) const { return n1->get_id() < n2->get_id(); }
};
bool lex_lt(unsigned num, ast * const * n1, ast * const * n2);
inline bool lex_lt(unsigned num, expr * const * n1, expr * const * n2) {
return lex_lt(num, reinterpret_cast<ast*const*>(n1), reinterpret_cast<ast*const*>(n2));
}