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remove symbol -> zstring -> symbol round-trips

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-05-22 13:12:49 -07:00
parent 5cb0bac41d
commit 20a67e47ca
13 changed files with 68 additions and 62 deletions
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13
src/ast/seq_decl_plugin.h
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@ -191,7 +191,6 @@ public:
unsigned max_char() const { return get_char_plugin().max_char(); }
unsigned num_bits() const { return get_char_plugin().num_bits(); }
app* mk_string(symbol const& s);
app* mk_string(zstring const& s);
app* mk_char(unsigned ch);
@ -262,9 +261,6 @@ public:
ast_manager& m;
family_id m_fid;
app* mk_string(char const* s) { return mk_string(symbol(s)); }
app* mk_string(std::string const& s) { return mk_string(symbol(s.c_str())); }
public:
str(seq_util& u): u(u), m(u.m), m_fid(u.m_fid) {}
@ -273,7 +269,6 @@ public:
sort* mk_string_sort() const { return m.mk_sort(m_fid, _STRING_SORT, 0, nullptr); }
app* mk_empty(sort* s) const { return m.mk_const(m.mk_func_decl(m_fid, OP_SEQ_EMPTY, 0, nullptr, 0, (expr*const*)nullptr, s)); }
app* mk_string(zstring const& s) const;
app* mk_string(symbol const& s) const { return u.seq.mk_string(s); }
app* mk_char(unsigned ch) const;
app* mk_concat(expr* a, expr* b) const { expr* es[2] = { a, b }; return m.mk_app(m_fid, OP_SEQ_CONCAT, 2, es); }
app* mk_concat(expr* a, expr* b, expr* c) const { return mk_concat(a, mk_concat(b, c)); }
@ -313,14 +308,12 @@ public:
bool is_skolem(func_decl const* f) const { return is_decl_of(f, m_fid, _OP_SEQ_SKOLEM); }
bool is_string(expr const * n) const { return is_app_of(n, m_fid, OP_STRING_CONST); }
bool is_string(expr const* n, symbol& s) const {
return is_string(n) && (s = to_app(n)->get_decl()->get_parameter(0).get_symbol(), true);
}
bool is_string(func_decl const* f) const { return is_decl_of(f, m_fid, OP_STRING_CONST); }
bool is_string(expr const* n, zstring& s) const;
bool is_string(func_decl const* f, zstring& s) const;
bool is_empty(expr const* n) const { symbol s;
return is_app_of(n, m_fid, OP_SEQ_EMPTY) || (is_string(n, s) && !s.is_numerical() && *s.bare_str() == 0);
bool is_empty(expr const* n) const {
zstring s;
return is_app_of(n, m_fid, OP_SEQ_EMPTY) || (is_string(n, s) && s.empty());
}
bool is_concat(expr const* n) const { return is_app_of(n, m_fid, OP_SEQ_CONCAT); }
bool is_length(expr const* n) const { return is_app_of(n, m_fid, OP_SEQ_LENGTH); }