MacroDeclarations

All Known Implementing Classes:

IfElseMacro, InstancesHelper, JavaMacro, MacroDeclarationsCompositor, MathFunctions, NoMacros
```
public interface MacroDeclarations
```
Interface to expose macros to a program.
It is deliberately kept very simple to give as little constraints as possible to implementations.
There is an implied invariant here:
hasMacro(String) == true -> getMacro(String) != null
hasMacro(String) should be pure i.e. have no side effects.
Whereas getMacro(String) may have side effects.
(This is useful for creating macros on the fly in getMacro(String))

Version:

$Revision: 1000 $

Author:

Benjamin Weber ( benweber at student dot ethz dot ch )

Method Summary

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

- Method Detail
  - hasMacro
```
boolean hasMacro(java.lang.String name)
```
    Whether the macro is declared
    
    Parameters:
    
    name - name of the macro being queried
    
    Returns:
    
    whether the macro is declared
  - getMacro
```
Macro getMacro(java.lang.String name)
```
    Tries to fetch the macro
    Before a macro is fetched it shold be checked whether it is declared through hasMacro(String)
    
    Parameters:
    
    name -
    
    Returns: