From cc440e2674697afc967e081cf91e03f149333502 Mon Sep 17 00:00:00 2001 From: Richard Qin Date: Thu, 2 Apr 2026 04:10:53 +0800 Subject: Initial commit: Build project architecture, define interfaces, write documentation, with the help of Claude --- proofsearch/include/atp/core/term_bank.h | 57 ++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 proofsearch/include/atp/core/term_bank.h (limited to 'proofsearch/include/atp/core/term_bank.h') diff --git a/proofsearch/include/atp/core/term_bank.h b/proofsearch/include/atp/core/term_bank.h new file mode 100644 index 0000000..a121f8a --- /dev/null +++ b/proofsearch/include/atp/core/term_bank.h @@ -0,0 +1,57 @@ +/* + * richard-atp-engine: A saturation-based automated theorem prover for first-order logic. + * Copyright (C) 2026 Richard Qin + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + + +#pragma once + +/// @file term_bank.h +/// @brief Hash-consing term pool — guarantees structural sharing. + +#include "atp/core/term.h" +#include "atp/core/types.h" + +#include + +namespace atp { + +/// Global term pool with hash-consing. +/// Every structurally identical term maps to the same TermId. +class TermBank { + public: + TermBank() = default; + + /// Create or retrieve a term. Returns the canonical TermId. + TermId makeTerm(SymbolId symbol, std::span args); + + /// Create a variable term. + TermId makeVar(SymbolId var_symbol); + + /// Look up a term by its ID. + [[nodiscard]] const Term& getTerm(TermId id) const; + + /// Check if a TermId represents a variable. + [[nodiscard]] bool isVariable(TermId id) const; + + /// Total number of unique terms stored. + [[nodiscard]] size_t size() const; + + private: + // TODO: Phase 1 implementation — flat arena + hash index +}; + +} // namespace atp -- cgit v1.2.3