78 lines
1.8 KiB
C++
78 lines
1.8 KiB
C++
/* @file Sequence.cpp */
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#include "Sequence.hpp"
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#include <cstddef>
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namespace xo {
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namespace ast {
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std::set<std::string>
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Sequence::get_free_variables() const {
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std::set<std::string> retval;
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for (const auto & x : expr_v_) {
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std::set<std::string> free_vars;
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free_vars = x->get_free_variables();
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for (const auto & y : free_vars)
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retval.insert(y);
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}
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return retval;
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}
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std::size_t
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Sequence::visit_preorder(VisitFn visitor_fn) {
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std::size_t n = 1;
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visitor_fn(this);
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for (const auto & x : expr_v_)
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n += x->visit_preorder(visitor_fn);
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return n;
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}
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std::size_t
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Sequence::visit_layer(VisitFn visitor_fn) {
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std::size_t n = 1;
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visitor_fn(this);
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for (const auto & x : expr_v_)
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n += x->visit_layer(visitor_fn);
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return n;
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}
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rp<Expression>
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Sequence::xform_layer(TransformFn xform_fn) {
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for (std::size_t i = 0, n = expr_v_.size(); i < n; ++i) {
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expr_v_[i] = expr_v_[i]->xform_layer(xform_fn);
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}
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return xform_fn(this);
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}
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void
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Sequence::attach_envs(bp<Environment> p) {
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for (const auto & x : expr_v_)
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x->attach_envs(p);
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}
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void
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Sequence::display(std::ostream & os) const {
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os << "<Sequence";
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std::size_t i = 0;
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for (const auto & x : expr_v_) {
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std::string i_str = tostr("[", i, "]");
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os << xtag(i_str.c_str(), x);
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}
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os << ">";
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}
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} /*namespace scm*/
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} /*namespace xo*/
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/* end Sequence.cpp */
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