Scala Compiler2.13.1 < Back
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# 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

c

scala.tools.nsc.interpreter.IMain.ReadEvalPrint

# 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

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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