OR-Tools  9.6
Public Member Functions | Protected Attributes | List of all members
AutomatonConstraint

Detailed Description

Specialized automaton constraint.

This constraint allows adding transitions to the automaton constraint incrementally.

Definition at line 673 of file cp_model.h.

Public Member Functions

void AddTransition (int tail, int head, int64_t transition_label)
 Adds a transitions to the automaton. More...
 
Constraint OnlyEnforceIf (absl::Span< const BoolVar > literals)
 The constraint will be enforced iff all literals listed here are true. More...
 
Constraint OnlyEnforceIf (BoolVar literal)
 See OnlyEnforceIf(absl::Span<const BoolVar> literals). More...
 
Constraint WithName (const std::string &name)
 Sets the name of the constraint. More...
 
const std::string & Name () const
 Returns the name of the constraint (or the empty string if not set). More...
 
const ConstraintProto & Proto () const
 Returns the underlying protobuf object (useful for testing). More...
 
ConstraintProto * MutableProto () const
 Returns the mutable underlying protobuf object (useful for model edition). More...
 

Protected Attributes

ConstraintProto * proto_ = nullptr
 

Member Function Documentation

◆ AddTransition()

void AddTransition ( int  tail,
int  head,
int64_t  transition_label 
)

Adds a transitions to the automaton.

Definition at line 553 of file cp_model.cc.

◆ MutableProto()

ConstraintProto* MutableProto ( ) const
inlineinherited

Returns the mutable underlying protobuf object (useful for model edition).

Definition at line 562 of file cp_model.h.

◆ Name()

const std::string & Name ( ) const
inherited

Returns the name of the constraint (or the empty string if not set).

Definition at line 499 of file cp_model.cc.

◆ OnlyEnforceIf() [1/2]

Constraint OnlyEnforceIf ( absl::Span< const BoolVar >  literals)
inherited

The constraint will be enforced iff all literals listed here are true.

If this is empty, then the constraint will always be enforced. An enforced constraint must be satisfied, and an un-enforced one will simply be ignored.

This is also called half-reification. To have an equivalence between a literal and a constraint (full reification), one must add both a constraint (controlled by a literal l) and its negation (controlled by the negation of l).

[Important] currently, only a few constraints support enforcement:

  • bool_or, bool_and, linear: fully supported.
  • interval: only support a single enforcement literal.
  • other: no support (but can be added on a per-demand basis).

Definition at line 501 of file cp_model.cc.

◆ OnlyEnforceIf() [2/2]

Constraint OnlyEnforceIf ( BoolVar  literal)
inherited

See OnlyEnforceIf(absl::Span<const BoolVar> literals).

Definition at line 508 of file cp_model.cc.

◆ Proto()

const ConstraintProto& Proto ( ) const
inlineinherited

Returns the underlying protobuf object (useful for testing).

Definition at line 559 of file cp_model.h.

◆ WithName()

Constraint WithName ( const std::string &  name)
inherited

Sets the name of the constraint.

Definition at line 494 of file cp_model.cc.

Member Data Documentation

◆ proto_

ConstraintProto* proto_ = nullptr
protectedinherited

Definition at line 569 of file cp_model.h.

The documentation for this class was generated from the following files: