Packages

c

net.totietje.evaluator

AbstractEvaluator

abstract class AbstractEvaluator[R] extends Evaluator[R]

A skeletal implementation of the Evaluator class to avoid duplication of common logic.

This class is applicable if, and only if, for each character it is unambiguous whether it is part of a word or special character. That is, every character can be either a special character, or part of a word, but not both. Furthermore, neither special characters not words can contain whitespace.

A 'special character' here is a standalone character that has a special meaning. Special characters cannot be part of values or words. For example, + would be a special character.

A 'word' here is a meaningful string of characters that do not contain any whitespace or special characters. For example, the constant pi is a word, as are functions such as sin. Words cannot contain special characters or they could be mistaken for two words - the word a+b would be split into a, +, and b.

R

The type that the string input should be evaluated to

Source
AbstractEvaluator.scala
Linear Supertypes
Evaluator[R], AnyRef, Any
Known Subclasses
ComplexEvaluator
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Inherited
  1. AbstractEvaluator
  2. Evaluator
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new AbstractEvaluator()

Abstract Value Members

  1. abstract def tokenizer: Tokenizer[R]
    Attributes
    protected

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def clone(): AnyRef
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  6. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  7. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  8. final def evaluate(expression: String): R

    Parses a string.

    Parses a string.

    First of all, this tokenizes the string using the abstract tokenizer method, which must be overridden by the user. This returns a Tokenizer which breaks the string down into a Seq of Tokens, representing the principle parts of the string.

    Then, this evaluates the provided array of tokens as the user defines, producing a result of type R. For more information on how this happens, see Token.

    expression

    The input string to parse

    returns

    The result of parsing the input

    Definition Classes
    AbstractEvaluator → Evaluator
    Exceptions thrown

    net.totietje.evaluator.EvaluationException If there is a syntax error in the expression

  9. def finalize(): Unit
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  10. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
  11. def hashCode(): Int
    Definition Classes
    AnyRef → Any
  12. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  13. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  14. final def notify(): Unit
    Definition Classes
    AnyRef
  15. final def notifyAll(): Unit
    Definition Classes
    AnyRef
  16. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  17. def toString(): String
    Definition Classes
    AnyRef → Any
  18. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  19. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  20. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from Evaluator[R]

Inherited from AnyRef

Inherited from Any

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