ShellInterpreter

All Known Implementing Classes:

ExecShellTableau, ExpressionShellTableau, InteractiveDialog, InteractiveShell, InteractiveShell.ShellTableau, PythonShellTableau, TclShellTableau
```
public interface ShellInterpreter
```
An interface for interpreters that work with the ShellTextArea.

Since:

Ptolemy II 3.0

Version:

$Id$

Author:

Edward A. Lee

See Also:

ShellTextArea

Pt.AcceptedRating:

Red (cxh)

Pt.ProposedRating:

Red (cxh)

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.lang.String`	`evaluateCommand(java.lang.String command)`	Evaluate the specified command.
`boolean`	`isCommandComplete(java.lang.String command)`	Return true if the specified command is complete (ready to be interpreted).

- Method Detail
  - evaluateCommand
```
java.lang.String evaluateCommand(java.lang.String command)
                          throws java.lang.Exception
```
    Evaluate the specified command. If this method returns null, then the associated ShellTextArea will not display a prompt until returnResult() is called. If this method returns an empty string, then the associated ShellTextArea will display the prompt.
    
    Parameters:
    
    command - The command.
    
    Returns:
    
    The return value of the command, or null if there is none.
    
    Throws:
    
    java.lang.Exception - If something goes wrong processing the command.
    
    See Also:
    
    ShellTextArea.returnResult(String)
  - isCommandComplete
```
boolean isCommandComplete(java.lang.String command)
```
    Return true if the specified command is complete (ready to be interpreted).
    
    Parameters:
    
    command - The command.
    
    Returns:
    
    True if the command is complete.