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https://github.com/Z3Prover/z3
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110 lines
2.8 KiB
C++
110 lines
2.8 KiB
C++
/*++
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Copyright (c) 2011 Microsoft Corporation
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Module Name:
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char_decl_plugin.h
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Abstract:
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char_plugin for unicode suppport
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Author:
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Nikolaj Bjorner (nbjorner) 2011-11-14
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Revision History:
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Updated to string sequences 2015-12-5
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Add SMTLIB 2.6 support 2020-5-17
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--*/
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#pragma once
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#include "util/zstring.h"
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#include "ast/ast.h"
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#include <string>
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enum char_sort_kind {
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CHAR_SORT
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};
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enum char_op_kind {
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OP_CHAR_CONST,
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OP_CHAR_LE,
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OP_CHAR_TO_INT,
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OP_CHAR_TO_BV,
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OP_CHAR_FROM_BV,
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OP_CHAR_IS_DIGIT
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};
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class char_decl_plugin : public decl_plugin {
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sort* m_char { nullptr };
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symbol m_charc_sym;
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void set_manager(ast_manager * m, family_id id) override;
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public:
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char_decl_plugin();
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~char_decl_plugin() override;
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void finalize() override {}
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decl_plugin* mk_fresh() override { return alloc(char_decl_plugin); }
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sort* mk_sort(decl_kind k, unsigned num_parameters, parameter const* parameters) override { return m_char; }
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func_decl* mk_func_decl(decl_kind k, unsigned num_parameters, parameter const* parameters,
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unsigned arity, sort* const* domain, sort* range) override;
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void get_op_names(svector<builtin_name>& op_names, symbol const& logic) override;
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void get_sort_names(svector<builtin_name>& sort_names, symbol const& logic) override;
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bool is_value(app* e) const override;
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bool is_unique_value(app* e) const override;
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bool are_equal(app* a, app* b) const override;
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bool are_distinct(app* a, app* b) const override;
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expr* get_some_value(sort* s) override;
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sort* char_sort() const { return m_char; }
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app* mk_char(unsigned u);
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app* mk_le(expr* a, expr* b);
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app* mk_to_int(expr* a) { return m_manager->mk_app(m_family_id, OP_CHAR_TO_INT, 1, &a); }
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app* mk_is_digit(expr* a) { return m_manager->mk_app(m_family_id, OP_CHAR_IS_DIGIT, 1, &a); }
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bool is_le(expr const* e) const { return is_app_of(e, m_family_id, OP_CHAR_LE); }
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bool is_const_char(expr const* e, unsigned& c) const {
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return is_app_of(e, m_family_id, OP_CHAR_CONST) && (c = to_app(e)->get_parameter(0).get_int(), true);
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}
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bool is_to_int(expr const* e) const { return is_app_of(e, m_family_id, OP_CHAR_TO_INT); }
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bool is_is_digit(expr const* e) const { return is_app_of(e, m_family_id, OP_CHAR_IS_DIGIT); }
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bool is_char2bv(expr const* e) const { return is_app_of(e, m_family_id, OP_CHAR_TO_BV); }
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bool is_bv2char(expr const* e) const { return is_app_of(e, m_family_id, OP_CHAR_FROM_BV); }
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MATCH_UNARY(is_is_digit);
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MATCH_UNARY(is_to_int);
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MATCH_UNARY(is_char2bv);
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MATCH_UNARY(is_bv2char);
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MATCH_BINARY(is_le);
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static unsigned max_char() { return zstring::max_char(); }
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static unsigned num_bits() { return zstring::num_bits(); }
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};
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