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fix #1841

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-11-22 15:28:33 -08:00
parent 7bc3b4e381
commit f591e0948a
8 changed files with 209 additions and 210 deletions
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7
src/ast/seq_decl_plugin.h
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@ -41,6 +41,7 @@ enum seq_op_kind {
OP_SEQ_EXTRACT,
OP_SEQ_REPLACE,
OP_SEQ_AT,
OP_SEQ_NTH,
OP_SEQ_LENGTH,
OP_SEQ_INDEX,
OP_SEQ_TO_RE,
@ -243,6 +244,9 @@ public:
expr* mk_concat(unsigned n, expr* const* es) const { if (n == 1) return es[0]; SASSERT(n > 1); return m.mk_app(m_fid, OP_SEQ_CONCAT, n, es); }
expr* mk_concat(expr_ref_vector const& es) const { return mk_concat(es.size(), es.c_ptr()); }
app* mk_length(expr* a) const { return m.mk_app(m_fid, OP_SEQ_LENGTH, 1, &a); }
app* mk_nth(expr* s, expr* i) const { expr* es[2] = { s, i }; return m.mk_app(m_fid, OP_SEQ_NTH, 2, es); }
app* mk_nth(expr* s, unsigned i) const;
app* mk_substr(expr* a, expr* b, expr* c) const { expr* es[3] = { a, b, c }; return m.mk_app(m_fid, OP_SEQ_EXTRACT, 3, es); }
app* mk_contains(expr* a, expr* b) const { expr* es[2] = { a, b }; return m.mk_app(m_fid, OP_SEQ_CONTAINS, 2, es); }
app* mk_prefix(expr* a, expr* b) const { expr* es[2] = { a, b }; return m.mk_app(m_fid, OP_SEQ_PREFIX, 2, es); }
@ -270,6 +274,8 @@ public:
bool is_extract(expr const* n) const { return is_app_of(n, m_fid, OP_SEQ_EXTRACT); }
bool is_contains(expr const* n) const { return is_app_of(n, m_fid, OP_SEQ_CONTAINS); }
bool is_at(expr const* n) const { return is_app_of(n, m_fid, OP_SEQ_AT); }
bool is_nth(expr const* n) const { return is_app_of(n, m_fid, OP_SEQ_NTH); }
bool is_nth(expr const* n, expr*& s, unsigned& idx) const;
bool is_index(expr const* n) const { return is_app_of(n, m_fid, OP_SEQ_INDEX); }
bool is_replace(expr const* n) const { return is_app_of(n, m_fid, OP_SEQ_REPLACE); }
bool is_prefix(expr const* n) const { return is_app_of(n, m_fid, OP_SEQ_PREFIX); }
@ -294,6 +300,7 @@ public:
MATCH_TERNARY(is_extract);
MATCH_BINARY(is_contains);
MATCH_BINARY(is_at);
MATCH_BINARY(is_nth);
MATCH_BINARY(is_index);
MATCH_TERNARY(is_index);
MATCH_TERNARY(is_replace);