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.

SEE ALSO

Term::ReadLine

Math::SymbolicX::Calculator, Math::SymbolicX::Calculator::Interface::Web

Math::Symbolic, Math::Symbolic::Custom::Transformation

AUTHOR

Steffen Müller, <smueller@cpan.org>

COPYRIGHT AND LICENSE

Copyright (C) 2007 by Steffen Müller

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.6 or, at your option, any later version of Perl 5 you may have available.

cpanm Math::SymbolicX::Calculator::Interface::Shell

perl -MCPAN -e shell
install Math::SymbolicX::Calculator::Interface::Shell