TMLanguage

You call the compiler by doing: ./Parsing SOURCEFILE OUTPUTDOT

A program written in TML is converted to a turing machine. It can manipulate the head and read/write from it.
By default a program rejects everything.

The first thing in a program has to be a list of all characters allowed on the tape.
Then there can be a set of statements.

The default blank symbol is: "BLANK"
Symbols may be of any length and can be the full unicode range.
They should not be empty strings as those can not be written.

The following keywords are available:

IF, WHILE, END, WRITE, MOVERIGHT, MOVELEFT, ACCEPT, REJECT

These are used as control structure, output, the movement of the head and to indicate if we accept or not.

List

A list is a series of symbols.
Example: ["a","b","c"]

IF and WHILE

These keywords take a list behind them. You should include at least one space behind the keywords.
Example: IF ["a","b"]

Then you should follow by a block of statements and at the end you place the keyword END

Example:

    ["a"]
    WHILE ["a"]
        MOVELEFT
    END

This program will move the head left as long as the symbol under the head is an 'a'.

WRITE

Write is used to put a symbol on the tape under the head.
It should also be followed by a list.
Example: WRITE ["a"]

You can not write the empty string, as that means write nothing.

MOVELEFT/MOVERIGHT

These move the head one space to the left or the right.

ACCEPT/REJECT

Accept and reject can be used to put the program into either of the states.

    ["a", "b"]

    IF ["a"]
        ACCEPT
    END

The above program accepts strings that start with 'a' and rejects strings that start with 'b'.

Functions

You can define a function by using NAME
Followed by a block and then the keyword END

Example:

    *RemoveUntillNotC*
        WHILE ["c"]
        	WRITE ["BLANK"]
        	MOVERIGHT
        END
    END

You can call a function by using NAME

Example: RemoveUntillNotC

Functions should not be called within functions.