feat: implement core term, symbol, and clause storage logic with canonicalization support

1 files changed, 37 insertions, 0 deletions

diff --git a/proofsearch/src/core/term_bank.cc b/proofsearch/src/core/term_bank.cc
index b62ffd0..53b4f0c 100644
--- a/proofsearch/src/core/term_bank.cc
+++ b/proofsearch/src/core/term_bank.cc
@@ -16,4 +16,41 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
+#include "atp/core/term_bank.h"
+#include "atp/core/types.h"
+#include <cassert>
 
+namespace atp {
+
+TermId TermBank::makeTerm(SymbolId symbol, std::span<const TermId> args) {
+    TermKey key{.symbol = symbol, .args = {args.begin(), args.end()}};
+    auto it = term_to_id_.find(key);
+    if (it != term_to_id_.end()) {
+        return it->second;
+    }
+    auto new_id = static_cast<TermId>(terms_.size());
+    Term new_term{.symbol_id = symbol, .args = {args.begin(), args.end()}};
+    terms_.push_back(std::move(new_term));
+    term_to_id_.emplace(std::move(key), new_id);
+    return new_id;
+}
+
+TermId TermBank::makeVar(SymbolId var_symbol) {
+    return makeTerm(var_symbol, {});
+}
+
+const Term& TermBank::getTerm(TermId id) const {
+    assert(id < terms_.size() && "TermId out of bounds!");
+    return terms_[id];
+}
+
+bool TermBank::isVariable(TermId id) const {
+    assert(id < terms_.size() && "TermId out of bounds!");
+    return symbols_.isVariable(terms_[id].symbol_id);
+}
+
+size_t TermBank::size() const {
+    return terms_.size();
+}
+
+}  // namespace atp