Package org.sosy_lab.java_smt.basicimpl

Class AbstractEvaluator<TFormulaInfo,TType,TEnv>

java.lang.Object
org.sosy_lab.java_smt.basicimpl.AbstractEvaluator<TFormulaInfo,TType,TEnv>
All Implemented Interfaces:
AutoCloseable, Evaluator
Direct Known Subclasses:
AbstractModel
public abstract class AbstractEvaluator<TFormulaInfo,TType,TEnv> extends Object implements Evaluator

  • Field Details

  • Constructor Details

  • Method Details

    • eval

      public final <T extends Formula> @Nullable T eval(T f)
      Description copied from interface: Evaluator
      Evaluate a given formula substituting the values from the model and return it as formula.

      If a value is not relevant to the satisfiability result, the solver can choose either to insert an arbitrary value (e.g., the value 0 for the matching type) or just return null.

      The formula does not need to be a variable, we also allow complex expression. The solver will replace all symbols from the formula with their model values and then simplify the formula into a simple formula, e.g., consisting only of a numeral expression.

      Specified by:
      eval in interface Evaluator
      Parameters:
      f - Input formula to be evaluated.
      Returns:
      evaluation of the given formula or null if the solver does not provide a better evaluation.

    • evaluate

      public final @Nullable BigInteger evaluate(NumeralFormula.IntegerFormula f)
      Description copied from interface: Evaluator
      Type-safe evaluation for integer formulas.

      The formula does not need to be a variable, we also allow complex expression.

      Specified by:
      evaluate in interface Evaluator

    • evaluate

      public @Nullable Rational evaluate(NumeralFormula.RationalFormula f)
      Description copied from interface: Evaluator
      Type-safe evaluation for rational formulas.

      The formula does not need to be a variable, we also allow complex expression.

      Specified by:
      evaluate in interface Evaluator

    • evaluate

      public final @Nullable Boolean evaluate(BooleanFormula f)
      Description copied from interface: Evaluator
      Type-safe evaluation for boolean formulas.

      The formula does not need to be a variable, we also allow complex expression.

      Specified by:
      evaluate in interface Evaluator

    • evaluate

      public final @Nullable String evaluate(StringFormula f)
      Description copied from interface: Evaluator
      Type-safe evaluation for string formulas.

      The formula does not need to be a variable, we also allow complex expression.

      Specified by:
      evaluate in interface Evaluator

    • evaluate

      public final @Nullable String evaluate(EnumerationFormula f)
      Description copied from interface: Evaluator
      Type-safe evaluation for enumeration formulas.

      The formula does not need to be a variable, we also allow complex expression.

      Specified by:
      evaluate in interface Evaluator

    • evaluate

      public final @Nullable FloatingPointNumber evaluate(FloatingPointFormula f)
      Description copied from interface: Evaluator
      Type-safe evaluation for floating-point formulas.

      The formula does not need to be a variable, we also allow complex expression.

      Specified by:
      evaluate in interface Evaluator

    • evaluate

      public final @Nullable BigInteger evaluate(BitvectorFormula f)
      Description copied from interface: Evaluator
      Type-safe evaluation for bitvector formulas.

      The formula does not need to be a variable, we also allow complex expression.

      Specified by:
      evaluate in interface Evaluator

    • evaluate

      public final @Nullable Object evaluate(Formula f)
      Description copied from interface: Evaluator
      Evaluate a given formula substituting the values from the model.

      If a value is not relevant to the satisfiability result, the model can choose either an arbitrary value (e.g., the value 0 for the matching type) or just return null.

      The formula does not need to be a variable, we also allow complex expression.

      Specified by:
      evaluate in interface Evaluator
      Parameters:
      f - Input formula
      Returns:
      Either of: - Number (Rational/Double/BigInteger/Long/Integer) - Boolean

    • evalImpl

      protected abstract @Nullable TFormulaInfo evalImpl(TFormulaInfo formula)
      Simplify the given formula and replace all symbols with their model values. If a symbol is not set in the model and evaluation aborts, return null.

    • evaluateImpl

      protected final @Nullable Object evaluateImpl(TFormulaInfo f)
      Simplify the given formula and replace all symbols with their model values. If a symbol is not set in the model and evaluation aborts, return null. Afterwards convert the formula into a Java object as far as possible, i.e., try to match a primitive or simple type.

    • isClosed

      protected boolean isClosed()

    • close

      public void close()
      Description copied from interface: Evaluator
      Free resources associated with this evaluator (existing Formula instances stay valid, but Evaluator.evaluate(Formula) etc. must not be called again).
      Specified by:
      close in interface AutoCloseable
      Specified by:
      close in interface Evaluator