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64 lines
1.6 KiB
C++
64 lines
1.6 KiB
C++
/*++
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Copyright (c) 2006 Microsoft Corporation
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Module Name:
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push_app_ite.h
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Abstract:
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<abstract>
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Author:
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Leonardo de Moura (leonardo) 2008-05-14.
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Revision History:
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--*/
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#ifndef _PUSH_APP_ITE_H_
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#define _PUSH_APP_ITE_H_
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#include"ast.h"
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#include"simplifier.h"
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/**
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\brief Functor for applying the following transformation:
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(f s (ite c t1 t2)) ==> (ite c (f s t1) (f s t2))
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*/
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class push_app_ite : public simplifier {
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protected:
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bool m_conservative;
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int has_ite_arg(unsigned num_args, expr * const * args);
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void apply(func_decl * decl, unsigned num_args, expr * const * args, expr_ref & result);
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virtual bool is_target(func_decl * decl, unsigned num_args, expr * const * args);
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void reduce_core(expr * n);
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bool visit_children(expr * n);
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void reduce1(expr * n);
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void reduce1_app(app * n);
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void reduce1_quantifier(quantifier * q);
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public:
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push_app_ite(simplifier & s, bool conservative = true);
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virtual ~push_app_ite();
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void operator()(expr * s, expr_ref & r, proof_ref & p);
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};
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/**
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\brief Variation of push_app_ite that applies the transformation on nonground terms only.
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\remark This functor uses the app::is_ground method. This method is not
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completly precise, for instance, any term containing a quantifier is marked as non ground.
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*/
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class ng_push_app_ite : public push_app_ite {
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protected:
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virtual bool is_target(func_decl * decl, unsigned num_args, expr * const * args);
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public:
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ng_push_app_ite(simplifier & s, bool conservative = true);
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virtual ~ng_push_app_ite() {}
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};
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#endif /* _PUSH_APP_ITE_H_ */
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