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/****************************************************************************** |
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* Top contributors (to current version): |
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* Dejan Jovanovic, Morgan Deters, Christopher L. Conway |
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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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* Typing and cardinality rules for the theory of boolean. |
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*/ |
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#include "theory/booleans/theory_bool_type_rules.h" |
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#include <sstream> |
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namespace cvc5 { |
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namespace theory { |
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namespace boolean { |
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7103636 |
TypeNode BooleanTypeRule::computeType(NodeManager* nodeManager, |
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TNode n, |
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bool check) |
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{ |
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TypeNode booleanType = nodeManager->booleanType(); |
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if (check) |
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{ |
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for (const auto& child : n) |
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{ |
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if (!child.getType(check).isBoolean()) |
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{ |
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Debug("pb") << "failed type checking: " << child << std::endl; |
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Debug("pb") << " integer: " << child.getType(check).isInteger() |
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<< std::endl; |
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Debug("pb") << " real: " << child.getType(check).isReal() << std::endl; |
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throw TypeCheckingExceptionPrivate(n, |
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"expecting a Boolean subexpression"); |
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} |
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} |
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} |
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return booleanType; |
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} |
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TypeNode IteTypeRule::computeType(NodeManager* nodeManager, TNode n, bool check) |
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{ |
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TypeNode thenType = n[1].getType(check); |
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TypeNode elseType = n[2].getType(check); |
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TypeNode iteType = TypeNode::leastCommonTypeNode(thenType, elseType); |
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if (check) |
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{ |
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TypeNode booleanType = nodeManager->booleanType(); |
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if (n[0].getType(check) != booleanType) |
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{ |
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throw TypeCheckingExceptionPrivate(n, "condition of ITE is not Boolean"); |
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} |
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if (iteType.isNull()) |
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{ |
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std::stringstream ss; |
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ss << "Both branches of the ITE must be a subtype of a common type." |
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<< std::endl |
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<< "then branch: " << n[1] << std::endl |
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<< "its type : " << thenType << std::endl |
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<< "else branch: " << n[2] << std::endl |
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<< "its type : " << elseType << std::endl; |
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throw TypeCheckingExceptionPrivate(n, ss.str()); |
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} |
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} |
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return iteType; |
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} |
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} // namespace boolean |
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} // namespace theory |
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} // namespace cvc5 |