roland/xo-alloc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

xo-expression: + Expression::get_free_variables()

Browse source
This commit is contained in:
Roland Conybeare 2024-07-01 16:50:17 -04:00
commit b7db7c5454
7 changed files with 59 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

10
include/xo/expression/Lambda.hpp
View file

@ -49,6 +49,16 @@ namespace xo {
// ----- Expression -----
virtual std::set<std::string> get_free_variables() const override {
std::set<std::string> retval = body_->get_free_variables();
/* but remove formals. */
for (const auto & var : local_env_->argv())
retval.erase(var->name());
return retval;
}
virtual std::size_t visit_preorder(VisitFn visitor_fn) override {
std::size_t n = 1;