weka.core.expressionlanguage.common

## Class NoMacros

- java.lang.Object
- - weka.core.expressionlanguage.common.NoMacros

- All Implemented Interfaces:
    MacroDeclarations

      public class NoMacros
      extends java.lang.Object
      implements MacroDeclarations

  A macro declarations that contains no macros at all
  Version:
    $Revision: 1000 $
  Author:
    Benjamin Weber ( benweber at student dot ethz dot ch )

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `NoMacros()`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `Macro` | `getMacro(java.lang.String name)` Tries to fetch a macro.
    `boolean` | `hasMacro(java.lang.String name)` Whether the macro is declared.

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

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

- - ### Constructor Detail

    - #### NoMacros

          public NoMacros()

  - ### Method Detail

    - #### hasMacro

          public boolean hasMacro(java.lang.String name)

      Whether the macro is declared. Always returns `false`
      Specified by:
        `hasMacro` in interface `MacroDeclarations`
      Parameters:
        `name` - name of the macro
      Returns:
        whether the macro is declared. Always `false`.

    - #### getMacro

          public Macro getMacro(java.lang.String name)

      Tries to fetch a macro. Will always fail. The same invariant of `MacroDeclarations` applies here too.
      Specified by:
        `getMacro` in interface `MacroDeclarations`
      Parameters:
        `name` - name of the macro
      Returns:
        nothing