Turing Machine that accepts input line by line through a prompt.
Run with cargo run from the top level directory, or run the executable created by cargo build in target/debug/. To allow for command line arguments with the former, you must run cargo run -- [args]. Alternatively, you may download the binary from the releases section of this repository.
This interpreter keeps state through each command. See below for a list of commands.
| Command | Explanation |
|---|---|
| --save-commands, -s | Passing this command saves the commands executed throughout the lifetime of the program as well as any tape resets. A filename is expected after this argument to save the commands to. This file will be created/overwritten in the directory that this program is run in. If no filename is supplied, the default filename is foo.bf. |
| Command | Explanation |
|---|---|
| + | Increment the byte at the pointer |
| - | Decrement the byte at the pointer |
| > | Increment the data pointer |
| < | Decrement the data pointer |
| . | Output the byte at the data pointer |
| , | Accept a byte of input at the data pointer. Example: ,h will put the value 104 at the data pointer. This differs in regular syntax in that input is inlined rather than taken from stdin. |
| [ | If the byte at the data pointer is zero, then instead of moving the instruction pointer forward to the next command, jump it forward to the command after the matching ] command. |
| ] | If the byte at the data pointer is nonzero, then instead of moving the instruction pointer forward to the next command, jump it back to the command after the matching [ command. |
These must be the only thing entered on a line in order for them to run
| Command | Explanation |
|---|---|
| p | Print the status of the tape |
| r | Reset the status of the tape |
| h | Print the Interpreter options |
| q | Quit the program |