Packages

  • package root

    The Scala compiler and reflection APIs.

    The Scala compiler and reflection APIs.

    Definition Classes
    root
  • package scala
    Definition Classes
    root
  • package tools
    Definition Classes
    scala
  • package nsc
    Definition Classes
    tools
  • package interpreter
    Definition Classes
    nsc
  • class IMain extends Repl with Imports with PresentationCompilation with Closeable

    An interpreter for Scala code.

    An interpreter for Scala code.

    The main public entry points are compile(), interpret(), and bind(). The compile() method loads a complete Scala file. The interpret() method executes one line of Scala code at the request of the user. The bind() method binds an object to a variable that can then be used by later interpreted code.

    The overall approach is based on compiling the requested code and then using a Java classloader and Java reflection to run the code and access its results.

    In more detail, a single compiler instance is used to accumulate all successfully compiled or interpreted Scala code. To "interpret" a line of code, the compiler generates a fresh object that includes the line of code and which has public member(s) to export all variables defined by that code. To extract the result of an interpreted line to show the user, a second "result object" is created which imports the variables exported by the above object and then exports members called "$eval" and "$print". To accommodate user expressions that read from variables or methods defined in previous statements, "import" statements are used.

    This interpreter shares the strengths and weaknesses of using the full compiler-to-Java. The main strength is that interpreted code behaves exactly as does compiled code, including running at full speed. The main weakness is that redefining classes and methods is not handled properly, because rebinding at the Java level is technically difficult.

    Definition Classes
    interpreter
  • class ReadEvalPrint extends AnyRef

    Here is where we:

    Here is where we:

    1) Read some source code, and put it in the "read" object. 2) Evaluate the read object, and put the result in the "eval" object. 3) Create a String for human consumption, and put it in the "print" object.

    Read! Eval! Print! Some of that not yet centralized here.

    Definition Classes
    IMain
  • EvalException

class EvalException extends RuntimeException

Source
IMain.scala
Linear Supertypes
java.lang.RuntimeException, java.lang.Exception, java.lang.Throwable, java.io.Serializable, AnyRef, Any
Type Hierarchy
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. EvalException
  2. RuntimeException
  3. Exception
  4. Throwable
  5. Serializable
  6. AnyRef
  7. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
  1. Hide All
  2. Show All
Visibility
  1. Public
  2. Protected

Instance Constructors

  1. new EvalException(msg: String, cause: Throwable)

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##: Int
    Definition Classes
    AnyRef → Any
  3. def +(other: String): String
    Implicit
    This member is added by an implicit conversion from EvalException toany2stringadd[EvalException] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ->[B](y: B): (EvalException, B)
    Implicit
    This member is added by an implicit conversion from EvalException toArrowAssoc[EvalException] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  5. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  6. final def addSuppressed(arg0: java.lang.Throwable): Unit
    Definition Classes
    Throwable
  7. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  8. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
  9. def ensuring(cond: (EvalException) => Boolean, msg: => Any): EvalException
    Implicit
    This member is added by an implicit conversion from EvalException toEnsuring[EvalException] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  10. def ensuring(cond: (EvalException) => Boolean): EvalException
    Implicit
    This member is added by an implicit conversion from EvalException toEnsuring[EvalException] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  11. def ensuring(cond: Boolean, msg: => Any): EvalException
    Implicit
    This member is added by an implicit conversion from EvalException toEnsuring[EvalException] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  12. def ensuring(cond: Boolean): EvalException
    Implicit
    This member is added by an implicit conversion from EvalException toEnsuring[EvalException] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  13. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  14. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  15. def fillInStackTrace(): java.lang.Throwable
    Definition Classes
    Throwable
  16. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable])
  17. def formatted(fmtstr: String): String
    Implicit
    This member is added by an implicit conversion from EvalException toStringFormat[EvalException] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()
  18. def getCause(): java.lang.Throwable
    Definition Classes
    Throwable
  19. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  20. def getLocalizedMessage(): String
    Definition Classes
    Throwable
  21. def getMessage(): String
    Definition Classes
    Throwable
  22. def getStackTrace(): Array[StackTraceElement]
    Definition Classes
    Throwable
  23. final def getSuppressed(): Array[java.lang.Throwable]
    Definition Classes
    Throwable
  24. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  25. def initCause(arg0: java.lang.Throwable): java.lang.Throwable
    Definition Classes
    Throwable
  26. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  27. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  28. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  29. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  30. def printStackTrace(arg0: PrintWriter): Unit
    Definition Classes
    Throwable
  31. def printStackTrace(arg0: PrintStream): Unit
    Definition Classes
    Throwable
  32. def printStackTrace(): Unit
    Definition Classes
    Throwable
  33. def setStackTrace(arg0: Array[StackTraceElement]): Unit
    Definition Classes
    Throwable
  34. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  35. def toString(): String
    Definition Classes
    Throwable → AnyRef → Any
  36. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  37. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  38. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()

Deprecated Value Members

  1. def →[B](y: B): (EvalException, B)
    Implicit
    This member is added by an implicit conversion from EvalException toArrowAssoc[EvalException] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use -> instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.

Inherited from java.lang.RuntimeException

Inherited from java.lang.Exception

Inherited from java.lang.Throwable

Inherited from java.io.Serializable

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd fromEvalException to any2stringadd[EvalException]

Inherited by implicit conversion StringFormat fromEvalException to StringFormat[EvalException]

Inherited by implicit conversion Ensuring fromEvalException to Ensuring[EvalException]

Inherited by implicit conversion ArrowAssoc fromEvalException to ArrowAssoc[EvalException]

Ungrouped