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62 lines
1.2 KiB
C++
62 lines
1.2 KiB
C++
/*++
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Copyright (c) 2008 Microsoft Corporation
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Module Name:
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expr_rand.h
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Abstract:
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Generator of random ASTs.
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Author:
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Nikolaj Bjorner 2008-04-10.
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Revision History:
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--*/
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#ifndef _EXPR_RAND_H_
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#define _EXPR_RAND_H_
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#include"ast.h"
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#include"obj_hashtable.h"
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class expr_rand {
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ast_manager& m_manager;
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unsigned m_num_vars;
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unsigned m_num_apps;
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unsigned m_num_nodes;
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unsigned m_max_steps;
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random_gen m_random;
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typedef obj_map<sort, expr_ref_vector*> map_t;
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func_decl_ref_vector m_funcs;
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map_t m_nodes;
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public:
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expr_rand(ast_manager& m);
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~expr_rand();
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void add_var(sort*);
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void add_func_decl(func_decl*);
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void add_expr(expr* t);
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void get_next(sort* s, expr_ref& e);
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void initialize_bv(unsigned num_vars);
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void initialize_arith(unsigned num_vars);
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void initialize_array(unsigned num_vars, sort* dom, sort* rng);
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void initialize_basic(unsigned amplification);
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void seed(unsigned n) { m_random = random_gen(n); }
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private:
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void walk();
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void walk(unsigned n);
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func_decl* choose_func_decl();
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expr* choose_expr(sort*);
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};
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#endif
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