Package org.codehaus.groovy.classgen.asm

## Class ExpressionAsVariableSlot

- java.lang.Object
- - org.codehaus.groovy.ast.ASTNode
  - - org.codehaus.groovy.ast.AnnotatedNode
    - - org.codehaus.groovy.ast.expr.Expression
      - - org.codehaus.groovy.classgen.BytecodeExpression
        - - org.codehaus.groovy.classgen.asm.ExpressionAsVariableSlot

- All Implemented Interfaces:
    `GroovydocHolder<AnnotatedNode>`, `NodeMetaDataHandler`

      public class ExpressionAsVariableSlot
      extends BytecodeExpression

  Helper class that takes an Expression and if visited will load it normally, storing the result in a helper variable, which then can be requested after the visit is completed. A copy of the variable will stay on the stack. Subsequent visits will load the stored value instead of visiting the expression again

- - ### Field Summary

    - ### Fields inherited from class org.codehaus.groovy.classgen.BytecodeExpression

      `NOP`

    - ### Fields inherited from class org.codehaus.groovy.ast.expr.Expression

      `EMPTY_ARRAY`

    - ### Fields inherited from interface groovy.lang.groovydoc.GroovydocHolder

      `DOC_COMMENT`

  - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `ExpressionAsVariableSlot​(WriterController controller, Expression expression)` |
    `ExpressionAsVariableSlot​(WriterController controller, Expression expression, String name)` |

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `int` | `getIndex()` | returns the index of the bytecode variable
    `String` | `getText()` |
    `void` | `visit​(org.objectweb.asm.MethodVisitor mv)` |

    - ### Methods inherited from class org.codehaus.groovy.classgen.BytecodeExpression

      `transformExpression, visit`

    - ### Methods inherited from class org.codehaus.groovy.ast.expr.Expression

      `getType, setType, transformExpressions, transformExpressions`

    - ### Methods inherited from class org.codehaus.groovy.ast.AnnotatedNode

      `addAnnotation, addAnnotations, getAnnotations, getAnnotations, getDeclaringClass, getGroovydoc, getInstance, hasNoRealSourcePosition, isSynthetic, setDeclaringClass, setHasNoRealSourcePosition, setSynthetic`

    - ### Methods inherited from class org.codehaus.groovy.ast.ASTNode

      `copyNodeMetaData, getColumnNumber, getLastColumnNumber, getLastLineNumber, getLineNumber, getMetaDataMap, setColumnNumber, setLastColumnNumber, setLastLineNumber, setLineNumber, setMetaDataMap, setSourcePosition`

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

    - ### Methods inherited from interface org.codehaus.groovy.ast.NodeMetaDataHandler

      `copyNodeMetaData, getNodeMetaData, getNodeMetaData, getNodeMetaData, putNodeMetaData, removeNodeMetaData, setNodeMetaData`

- - ### Constructor Detail

    - #### ExpressionAsVariableSlot

          public ExpressionAsVariableSlot​(WriterController controller,
                                          Expression expression,
                                          String name)

    - #### ExpressionAsVariableSlot

          public ExpressionAsVariableSlot​(WriterController controller,
                                          Expression expression)

  - ### Method Detail

    - #### visit

          public void visit​(org.objectweb.asm.MethodVisitor mv)

      Specified by:
        `visit` in class `BytecodeExpression`

    - #### getIndex

          public int getIndex()

      returns the index of the bytecode variable

    - #### getText

          public String getText()

      Overrides:
        `getText` in class `ASTNode`