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/****************************************************************************** |
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* Top contributors (to current version): |
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* Andrew Reynolds, Morgan Deters, Tim King |
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* |
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* This file is part of the cvc5 project. |
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* |
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* Copyright (c) 2009-2021 by the authors listed in the file AUTHORS |
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* in the top-level source directory and their institutional affiliations. |
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* All rights reserved. See the file COPYING in the top-level source |
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* directory for licensing information. |
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* **************************************************************************** |
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* |
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* Theory of quantifiers. |
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*/ |
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#include "theory/quantifiers/theory_quantifiers_type_rules.h" |
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namespace cvc5 { |
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namespace theory { |
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namespace quantifiers { |
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TypeNode QuantifierTypeRule::computeType(NodeManager* nodeManager, |
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TNode n, |
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bool check) |
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{ |
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Debug("typecheck-q") << "type check for fa " << n << std::endl; |
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Assert((n.getKind() == kind::FORALL || n.getKind() == kind::EXISTS) |
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&& n.getNumChildren() > 0); |
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if (check) |
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{ |
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if (n[0].getType(check) != nodeManager->boundVarListType()) |
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{ |
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throw TypeCheckingExceptionPrivate( |
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n, "first argument of quantifier is not bound var list"); |
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} |
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if (n[1].getType(check) != nodeManager->booleanType()) |
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{ |
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throw TypeCheckingExceptionPrivate(n, |
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"body of quantifier is not boolean"); |
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} |
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if (n.getNumChildren() == 3) |
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{ |
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if (n[2].getType(check) != nodeManager->instPatternListType()) |
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{ |
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throw TypeCheckingExceptionPrivate( |
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n, |
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"third argument of quantifier is not instantiation " |
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"pattern list"); |
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} |
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for (const Node& p : n[2]) |
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{ |
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if (p.getKind() == kind::INST_POOL |
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&& p.getNumChildren() != n[0].getNumChildren()) |
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{ |
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throw TypeCheckingExceptionPrivate( |
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n, |
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"expected number of arguments to pool to be the same as the " |
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"number of bound variables of the quantified formula"); |
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} |
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} |
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} |
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} |
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return nodeManager->booleanType(); |
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} |
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TypeNode QuantifierBoundVarListTypeRule::computeType(NodeManager* nodeManager, |
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TNode n, |
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bool check) |
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{ |
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Assert(n.getKind() == kind::BOUND_VAR_LIST); |
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if (check) |
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{ |
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for (int i = 0; i < (int)n.getNumChildren(); i++) |
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{ |
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if (n[i].getKind() != kind::BOUND_VARIABLE) |
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{ |
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throw TypeCheckingExceptionPrivate( |
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n, "argument of bound var list is not bound variable"); |
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} |
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} |
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} |
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return nodeManager->boundVarListType(); |
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} |
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TypeNode QuantifierInstPatternTypeRule::computeType(NodeManager* nodeManager, |
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TNode n, |
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bool check) |
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{ |
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Assert(n.getKind() == kind::INST_PATTERN); |
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if (check) |
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{ |
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TypeNode tn = n[0].getType(check); |
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// this check catches the common mistake writing :pattern (f x) instead of |
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// :pattern ((f x)) |
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if (n[0].isVar() && n[0].getKind() != kind::BOUND_VARIABLE |
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&& tn.isFunction()) |
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{ |
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throw TypeCheckingExceptionPrivate( |
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n[0], "Pattern must be a list of fully-applied terms."); |
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} |
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} |
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return nodeManager->instPatternType(); |
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} |
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TypeNode QuantifierAnnotationTypeRule::computeType(NodeManager* nodeManager, |
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TNode n, |
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bool check) |
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{ |
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if (n.getKind() == kind::INST_ATTRIBUTE) |
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{ |
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if (n.getNumChildren() > 1) |
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{ |
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// first must be a keyword |
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if (n[0].getKind() != kind::CONST_STRING) |
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{ |
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throw TypeCheckingExceptionPrivate( |
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n[0], "Expecting a keyword at the head of INST_ATTRIBUTE."); |
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} |
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} |
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} |
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return nodeManager->instPatternType(); |
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} |
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TypeNode QuantifierInstPatternListTypeRule::computeType( |
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NodeManager* nodeManager, TNode n, bool check) |
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{ |
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Assert(n.getKind() == kind::INST_PATTERN_LIST); |
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if (check) |
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{ |
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for (const Node& nc : n) |
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{ |
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Kind k = nc.getKind(); |
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if (k != kind::INST_PATTERN && k != kind::INST_NO_PATTERN |
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&& k != kind::INST_ATTRIBUTE && k != kind::INST_POOL |
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&& k != kind::INST_ADD_TO_POOL && k != kind::SKOLEM_ADD_TO_POOL) |
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{ |
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throw TypeCheckingExceptionPrivate( |
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n, |
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"argument of inst pattern list is not a legal quantifiers " |
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"annotation"); |
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} |
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} |
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} |
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return nodeManager->instPatternListType(); |
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} |
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} // namespace quantifiers |
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} // namespace theory |
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} // namespace cvc5 |