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add parameter access to C++ API

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This commit is contained in:
Nikolaj Bjorner 2023-03-25 18:14:08 +01:00
parent 9ca0faa091
commit cd2ea6b703
1 changed files with 41 additions and 0 deletions
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41
src/api/c++/z3++.h
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@ -151,6 +151,7 @@ namespace z3 {
}
/**
\brief A Context manages all other Z3 objects, global configuration options, etc.
*/
@ -750,6 +751,7 @@ namespace z3 {
func_decl_vector recognizers();
};
/**
\brief Function declaration (aka function definition). It is the signature of interpreted and uninterpreted functions in Z3.
The basic building block in Z3 is the function application.
@ -770,6 +772,8 @@ namespace z3 {
sort range() const { Z3_sort r = Z3_get_range(ctx(), *this); check_error(); return sort(ctx(), r); }
symbol name() const { Z3_symbol s = Z3_get_decl_name(ctx(), *this); check_error(); return symbol(ctx(), s); }
Z3_decl_kind decl_kind() const { return Z3_get_decl_kind(ctx(), *this); }
unsigned num_parameters() const { return Z3_get_decl_num_parameters(ctx(), *this); }
func_decl transitive_closure(func_decl const&) {
Z3_func_decl tc = Z3_mk_transitive_closure(ctx(), *this); check_error(); return func_decl(ctx(), tc);
@ -2687,6 +2691,43 @@ namespace z3 {
return out;
}
/**
\brief class for auxiliary parameters associated with func_decl
The class is initialized with a func_decl or application expression and an index
The accessor get_expr, get_sort, ... is available depending on the value of kind().
The caller is responsible to check that the kind of the parameter aligns with the call (get_expr etc).
Parameters are available on some declarations to contain additional information that is not passed as
arguments when a function is applied to arguments. For example, bit-vector extraction has two
integer parameters. Array map has a function parameter.
*/
class parameter {
Z3_parameter_kind m_kind;
func_decl m_decl;
unsigned m_index;
context& ctx() const { return m_decl.ctx(); }
void check_error() const { ctx().check_error(); }
public:
parameter(func_decl const& d, unsigned idx) : m_decl(d), m_index(idx) {
if (ctx().enable_exceptions() && idx >= d.num_parameters())
Z3_THROW(exception("parameter index is out of bounds"));
m_kind = Z3_get_decl_parameter_kind(ctx(), d, idx);
}
parameter(expr const& e, unsigned idx) : m_decl(e.decl()), m_index(idx) {
if (ctx().enable_exceptions() && idx >= m_decl.num_parameters())
Z3_THROW(exception("parameter index is out of bounds"));
m_kind = Z3_get_decl_parameter_kind(ctx(), m_decl, idx);
}
Z3_parameter_kind kind() const { return m_kind; }
expr get_expr() const { Z3_ast a = Z3_get_decl_ast_parameter(ctx(), m_decl, m_index); check_error(); return expr(ctx(), a); }
sort get_sort() const { Z3_sort s = Z3_get_decl_sort_parameter(ctx(), m_decl, m_index); check_error(); return sort(ctx(), s); }
func_decl get_decl() const { Z3_func_decl f = Z3_get_decl_func_decl_parameter(ctx(), m_decl, m_index); check_error(); return func_decl(ctx(), f); }
symbol get_symbol() const { Z3_symbol s = Z3_get_decl_symbol_parameter(ctx(), m_decl, m_index); check_error(); return symbol(ctx(), s); }
std::string get_rational() const { Z3_string s = Z3_get_decl_rational_parameter(ctx(), m_decl, m_index); check_error(); return s; }
double get_double() const { double d = Z3_get_decl_double_parameter(ctx(), m_decl, m_index); check_error(); return d; }
int get_int() const { int i = Z3_get_decl_int_parameter(ctx(), m_decl, m_index); check_error(); return i; }
};
class solver : public object {
Z3_solver m_solver;