NAME Math::SymbolicX::Calculator::Interface::Shell - A Calculator Shell SYNOPSIS # simplest form of usage: use Math::SymbolicX::Calculator::Interface::Shell; my $shell = Math::SymbolicX::Calculator::Interface::Shell->new(); $shell->run(); DESCRIPTION This module implements a shell interface to the Math::SymbolicX::Calculator. METHODS new Returns a new shell application object. Call the "run()" method on it to run the application. Optional parameters: (default in parenthesis) calc => a Math::SymbolicX::Calculator object to use input_handle => a file handle to read from (\*STDIN) prompt => the prompt string to use ('~> ') continued_prompt => prompt string to use for continued lines ('>> ') app_name => the name of the application ('Symbolic Calculator Shell') run Runs the main loop of the shell. calc Returns the Calculator object of this Shell. exit_hook Call this before stopping the shell. It runs all cleanup actions such as those needed for a possible persistance. This method doesn't actually kill your script, but returns after doing the cleanup. error Used to issue a warning to the user. First argument must be an error message to display. get_expression Reads a new expression from the input handle. An expression ends in a semicolon followed by a newline. Used internally by the run loop. Probably not that useful outside of that. Returns the expression or the empty list on error. _parse_command Parses generic commands such as exit and print. This might change. (Name and implementation) First argument: Expression to parse. FIXME: Document what this does or refactor _generic_out Generic output routine: Print Formulas and messages alike FIXME: Subject to change and refactoring.