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/****************************************************************************** |
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* Top contributors (to current version): |
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* Andrew Reynolds, Haniel Barbosa |
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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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* A class for constructing SyGuS datatypes. |
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*/ |
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#include "cvc5_private.h" |
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#ifndef CVC5__EXPR__SYGUS_DATATYPE_H |
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#define CVC5__EXPR__SYGUS_DATATYPE_H |
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#include <string> |
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#include <vector> |
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#include "expr/attribute.h" |
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#include "expr/dtype.h" |
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#include "expr/node.h" |
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#include "expr/type_node.h" |
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namespace cvc5 { |
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/** Attribute true for variables that represent any constant */ |
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struct SygusAnyConstAttributeId |
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{ |
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}; |
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typedef expr::Attribute<SygusAnyConstAttributeId, bool> SygusAnyConstAttribute; |
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/** |
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* Information necessary to specify a sygus constructor. Further detail on these |
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* fields can be found in SygusDatatype below. |
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*/ |
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class SygusDatatypeConstructor |
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{ |
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public: |
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/** The operator that the constructor encodes. */ |
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Node d_op; |
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/** Name of the constructor. */ |
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std::string d_name; |
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/** List of argument types. */ |
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std::vector<TypeNode> d_argTypes; |
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/** Weight of the constructor. */ |
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int d_weight; |
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}; |
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/** |
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* Keeps the necessary information for initializing a sygus datatype, which |
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* includes the operators, names, print callbacks and list of argument types |
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* for each constructor. |
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* |
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* It also maintains a datatype to represent the structure of the type node. |
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* |
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* Notice that this class is only responsible for setting SyGuS-related |
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* information regarding the datatype. It is still required that the user |
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* of this class construct the datatype type corresponding to the datatype |
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* e.g. via a call to ExprManager::mkMutualDatatypeTypes(). |
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*/ |
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class SygusDatatype |
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{ |
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public: |
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/** constructor */ |
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SygusDatatype(const std::string& name); |
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~SygusDatatype() {} |
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/** get the name of this datatype */ |
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std::string getName() const; |
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/** |
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* Add constructor that encodes an application of builtin operator op. |
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* |
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* op: the builtin operator, |
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* name: the name of the constructor, |
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* argTypes: the argument types of the constructor (typically other sygus |
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* datatype types). |
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* spc: the print callback (for custom printing of this node), |
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* weight: the weight of this constructor. |
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* |
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* It should be the case that argTypes are sygus datatype types (possibly |
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* unresolved) that encode the arguments of the builtin operator. That is, |
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* if op is the builtin PLUS operator, then argTypes could contain 2+ |
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* sygus datatype types that encode integer. |
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*/ |
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void addConstructor(Node op, |
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const std::string& name, |
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const std::vector<TypeNode>& argTypes, |
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int weight = -1); |
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/** |
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* Add constructor that encodes an application of builtin kind k. Like above, |
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* the arguments argTypes should correspond to sygus datatypes that encode |
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* the types of the arguments of the kind. |
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*/ |
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void addConstructor(Kind k, |
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const std::vector<TypeNode>& argTypes, |
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int weight = -1); |
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/** |
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* This adds a constructor that corresponds to the any constant constructor |
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* for the given (builtin) type tn. |
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*/ |
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void addAnyConstantConstructor(TypeNode tn); |
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/** Get the number of constructors added to this class so far */ |
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size_t getNumConstructors() const; |
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/** Get constructor at index i */ |
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const SygusDatatypeConstructor& getConstructor(unsigned i) const; |
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/** builds a datatype with the information in the type object |
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* |
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* sygusType: the builtin type that this datatype encodes, |
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* sygusVars: the formal argument list of the function-to-synthesize, |
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* allowConst: whether the grammar corresponding to this datatype allows |
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* any constant, |
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* allowAll: whether the grammar corresponding to this datatype allows |
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* any term. |
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*/ |
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void initializeDatatype(TypeNode sygusType, |
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Node sygusVars, |
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bool allowConst, |
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bool allowAll); |
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/** Get the sygus datatype initialized by this class */ |
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const DType& getDatatype() const; |
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/** is initialized */ |
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bool isInitialized() const; |
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private: |
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/** Information for each constructor. */ |
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std::vector<SygusDatatypeConstructor> d_cons; |
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/** Datatype to represent type's structure */ |
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DType d_dt; |
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}; |
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} // namespace cvc5 |
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#endif |