ptolemy.gui

Interface ShellInterpreter

All Known Implementing Classes:

DoubleShellTAPTableau, ExecShellTableau, ExpressionShellTableau, InteractiveDialog, InteractiveShell, InteractiveShell.ShellTableau, PythonShellTableau, TclShellTableau, TextualInteractionShell, TextualInteractionShell.ShellTableau, UserInteractiveShell, UserInteractiveShell.ShellTableau

public interface ShellInterpreter

An interface for interpreters that work with the ShellTextArea.

Since:

Ptolemy II 3.0

Author:

Edward A. Lee

See Also:

ShellTextArea

Pt.AcceptedRating:

Red (cxh)

Pt.ProposedRating:

Red (cxh)

Method Summary

Modifier and Type	Method and 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.