Graph Drawing and Analysis Library and Its Domain-Specific Language for Graphs’ Layout Specifications

Listing 3

Language rules for the support of logical operators.

AestheticCriteriaMath: CriteriaExpression;

CriteriaFactor: ’not’? (AestheticCriteion | (’(’ CriteriaExpression ’)’)

  );

CriteriaTerm: CriteriaFactor CriteriaAndFactor*;

CriteriaAndFactor: ’and’ CriteriaFactor;

CriteriaExpression: CriteriaTerm CriteriaOrTerm*;

CriteriaOrTerm: ’or’ CriteriaTerm;