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fix #2169

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-03-09 19:31:30 -08:00
parent c7bbf2f8de
commit 5bc0fb47a8
3 changed files with 24 additions and 1 deletions
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14
src/api/api_seq.cpp
View file

@ -55,6 +55,20 @@ extern "C" {
Z3_CATCH_RETURN(nullptr);
}
Z3_ast Z3_API Z3_mk_lstring(Z3_context c, unsigned sz, Z3_string str) {
Z3_TRY;
LOG_Z3_mk_string(c, str);
RESET_ERROR_CODE();
unsigned_vector chs;
for (unsigned i = 0; i < sz; ++i) chs.push_back(str[i]);
zstring s(sz, chs.c_ptr(), zstring::ascii);
app* a = mk_c(c)->sutil().str.mk_string(s);
mk_c(c)->save_ast_trail(a);
RETURN_Z3(of_ast(a));
Z3_CATCH_RETURN(nullptr);
}
Z3_sort Z3_API Z3_mk_string_sort(Z3_context c) {
Z3_TRY;
LOG_Z3_mk_string_sort(c);

2
src/api/python/z3/z3.py
View file

@ -10006,7 +10006,7 @@ def is_string_value(a):
def StringVal(s, ctx=None):
"""create a string expression"""
ctx = _get_ctx(ctx)
return SeqRef(Z3_mk_string(ctx.ref(), s), ctx)
return SeqRef(Z3_mk_lstring(ctx.ref(), len(s), s), ctx)
def String(name, ctx=None):
"""Return a string constant named `name`. If `ctx=None`, then the global context is used.

9
src/api/z3_api.h
View file

@ -3327,6 +3327,15 @@ extern "C" {
*/
Z3_ast Z3_API Z3_mk_string(Z3_context c, Z3_string s);
/**
\brief Create a string constant out of the string that is passed in
It takes the length of the string as well to take into account
0 characters.
def_API('Z3_mk_lstring' ,AST ,(_in(CONTEXT), _in(UINT), _in(STRING)))
*/
Z3_ast Z3_API Z3_mk_lstring(Z3_context c, unsigned len, Z3_string s);
/**
\brief Determine if \c s is a string constant.