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add (disabled) stubs for decomposing re-membership on regex

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-05-31 12:25:21 -07:00
parent 7f7663a3b4
commit 084cd335eb
4 changed files with 143 additions and 19 deletions
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4
src/ast/seq_decl_plugin.h
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@ -236,6 +236,8 @@ class seq_util {
family_id m_fid;
mutable scoped_ptr<bv_util> m_bv;
bv_util& bv() const;
unsigned max_plus(unsigned x, unsigned y) const;
public:
ast_manager& get_manager() const { return m; }
@ -400,6 +402,7 @@ public:
expr* get_rightmost_concat(expr* e) const { expr* e1, *e2; while (is_concat(e, e1, e2)) e = e2; return e; }
unsigned min_length(expr* s) const;
unsigned max_length(expr* s) const;
};
class re {
@ -469,6 +472,7 @@ public:
bool is_loop(expr const* n, expr*& body, expr*& lo, expr*& hi);
bool is_loop(expr const* n, expr*& body, expr*& lo);
unsigned min_length(expr* r) const;
unsigned max_length(expr* r) const;
};
str str;
re re;