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seq

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2015-12-09 20:17:00 -08:00
parent fe1039d12f
commit c5a9d81d93
7 changed files with 239 additions and 51 deletions
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39
src/ast/rewriter/seq_rewriter.cpp
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@ -55,22 +55,28 @@ br_status seq_rewriter::mk_app_core(func_decl * f, unsigned num_args, expr * con
return mk_seq_concat(args[0], args[1], result);
case OP_SEQ_LENGTH:
SASSERT(num_args == 1);
return mk_str_length(args[0], result);
return mk_seq_length(args[0], result);
case OP_SEQ_EXTRACT:
SASSERT(num_args == 3);
return mk_str_substr(args[0], args[1], args[2], result);
return mk_seq_extract(args[0], args[1], args[2], result);
case OP_SEQ_CONTAINS:
SASSERT(num_args == 2);
return mk_str_strctn(args[0], args[1], result);
return mk_seq_contains(args[0], args[1], result);
case OP_SEQ_AT:
SASSERT(num_args == 2);
return mk_str_at(args[0], args[1], result);
return mk_seq_at(args[0], args[1], result);
case OP_SEQ_PREFIX:
SASSERT(num_args == 2);
return mk_seq_prefix(args[0], args[1], result);
case OP_SEQ_SUFFIX:
SASSERT(num_args == 2);
return mk_seq_suffix(args[0], args[1], result);
case OP_SEQ_INDEX:
SASSERT(num_args == 3);
return mk_seq_index(args[0], args[1], args[2], result);
case OP_SEQ_REPLACE:
SASSERT(num_args == 3);
return mk_seq_replace(args[0], args[1], args[2], result);
case OP_SEQ_TO_RE:
return BR_FAILED;
case OP_SEQ_IN_RE:
@ -78,12 +84,6 @@ br_status seq_rewriter::mk_app_core(func_decl * f, unsigned num_args, expr * con
case OP_STRING_CONST:
return BR_FAILED;
case OP_STRING_STRIDOF:
SASSERT(num_args == 3);
return mk_str_stridof(args[0], args[1], args[2], result);
case OP_STRING_STRREPL:
SASSERT(num_args == 3);
return mk_str_strrepl(args[0], args[1], args[2], result);
case OP_STRING_ITOS:
SASSERT(num_args == 1);
return mk_str_itos(args[0], result);
@ -101,7 +101,8 @@ br_status seq_rewriter::mk_app_core(func_decl * f, unsigned num_args, expr * con
case _OP_STRING_IN_REGEXP:
case _OP_STRING_TO_REGEXP:
case _OP_STRING_SUBSTR:
case _OP_STRING_STRREPL:
case _OP_STRING_STRIDOF:
UNREACHABLE();
}
return BR_FAILED;
@ -143,7 +144,7 @@ br_status seq_rewriter::mk_seq_concat(expr* a, expr* b, expr_ref& result) {
return BR_FAILED;
}
br_status seq_rewriter::mk_str_length(expr* a, expr_ref& result) {
br_status seq_rewriter::mk_seq_length(expr* a, expr_ref& result) {
std::string b;
m_es.reset();
m_util.str.get_concat(a, m_es);
@ -176,7 +177,7 @@ br_status seq_rewriter::mk_str_length(expr* a, expr_ref& result) {
return BR_FAILED;
}
br_status seq_rewriter::mk_str_substr(expr* a, expr* b, expr* c, expr_ref& result) {
br_status seq_rewriter::mk_seq_extract(expr* a, expr* b, expr* c, expr_ref& result) {
std::string s;
rational pos, len;
if (m_util.str.is_string(a, s) && m_autil.is_numeral(b, pos) && m_autil.is_numeral(c, len) &&
@ -188,7 +189,7 @@ br_status seq_rewriter::mk_str_substr(expr* a, expr* b, expr* c, expr_ref& resul
}
return BR_FAILED;
}
br_status seq_rewriter::mk_str_strctn(expr* a, expr* b, expr_ref& result) {
br_status seq_rewriter::mk_seq_contains(expr* a, expr* b, expr_ref& result) {
std::string c, d;
if (m_util.str.is_string(a, c) && m_util.str.is_string(b, d)) {
result = m().mk_bool_val(0 != strstr(d.c_str(), c.c_str()));
@ -212,7 +213,7 @@ br_status seq_rewriter::mk_str_strctn(expr* a, expr* b, expr_ref& result) {
return BR_FAILED;
}
br_status seq_rewriter::mk_str_at(expr* a, expr* b, expr_ref& result) {
br_status seq_rewriter::mk_seq_at(expr* a, expr* b, expr_ref& result) {
std::string c;
rational r;
if (m_util.str.is_string(a, c) && m_autil.is_numeral(b, r) && r.is_unsigned()) {
@ -228,7 +229,7 @@ br_status seq_rewriter::mk_str_at(expr* a, expr* b, expr_ref& result) {
return BR_FAILED;
}
br_status seq_rewriter::mk_str_stridof(expr* a, expr* b, expr* c, expr_ref& result) {
br_status seq_rewriter::mk_seq_index(expr* a, expr* b, expr* c, expr_ref& result) {
std::string s1, s2;
rational r;
bool isc1 = m_util.str.is_string(a, s1);
@ -257,15 +258,17 @@ br_status seq_rewriter::mk_str_stridof(expr* a, expr* b, expr* c, expr_ref& resu
return BR_FAILED;
}
br_status seq_rewriter::mk_str_strrepl(expr* a, expr* b, expr* c, expr_ref& result) {
br_status seq_rewriter::mk_seq_replace(expr* a, expr* b, expr* c, expr_ref& result) {
std::string s1, s2, s3;
if (m_util.str.is_string(a, s1) && m_util.str.is_string(b, s2) &&
m_util.str.is_string(c, s3)) {
std::ostringstream buffer;
bool can_replace = true;
for (size_t i = 0; i < s1.length(); ) {
if (strncmp(s1.c_str() + i, s2.c_str(), s2.length()) == 0) {
if (can_replace && strncmp(s1.c_str() + i, s2.c_str(), s2.length()) == 0) {
buffer << s3;
i += s2.length();
can_replace = false;
}
else {
buffer << s1[i];