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wip: add recursive functions

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This commit is contained in:
Simon Cruanes 2017-11-07 15:57:27 +01:00
parent fba22d2fac
commit d5e134dd94
19 changed files with 1362 additions and 4 deletions
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6
src/parsers/smt2/smt2parser.cpp
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@ -2278,7 +2278,7 @@ namespace smt2 {
next();
}
void parse_rec_fun_decl(func_decl_ref& f, expr_ref_vector& bindings, svector<symbol>& ids) {
recfun::promise_def parse_rec_fun_decl(func_decl_ref& f, expr_ref_vector& bindings, svector<symbol>& ids) {
SASSERT(m_num_bindings == 0);
check_identifier("invalid function/constant definition, symbol expected");
symbol id = curr_id();
@ -2289,7 +2289,8 @@ namespace smt2 {
unsigned num_vars = parse_sorted_vars();
SASSERT(num_vars == m_num_bindings);
parse_sort("Invalid recursive function definition");
f = m().mk_func_decl(id, num_vars, sort_stack().c_ptr() + sort_spos, sort_stack().back());
recfun::promise_def pdef = m_ctx.decl_rec_fun(id, num_vars, sort_stack().c_ptr() + sort_spos, sort_stack().back());
f = pdef.get_def()->get_decl();
bindings.append(num_vars, expr_stack().c_ptr() + expr_spos);
ids.append(num_vars, symbol_stack().c_ptr() + sym_spos);
symbol_stack().shrink(sym_spos);
@ -2297,6 +2298,7 @@ namespace smt2 {
expr_stack().shrink(expr_spos);
m_env.end_scope();
m_num_bindings = 0;
return pdef;
}
void parse_rec_fun_bodies(func_decl_ref_vector const& decls, vector<expr_ref_vector> const& bindings, vector<svector<symbol> >const & ids) {