This is a tiny assembler writen in sml and compile in smlnj, which convert assembler language to machine language. It is also nand2tetris’s 6st project.

Use

$ smlnj
- use "assembler.sml";
- init "filepath";
$ diff yourhackfile test/hackfile

outline

allDigits
    allInRange
    checkDigit
readLines
    removeCarriageReturn
    removeHeadSpaces
    removeTailSpaces
    removeComment
    readFile
replaceDigestLabelsAndVariables
    replaceDigestLabels
        replaceDigestLabelsHelper
    getLabelPairsVariables
        replaceVariablesHelper
process
    getBinary
        getBinaryHelper
    appendZero
    getBinaryInstruction
    parseInstruction
init
          write

todo

• Each phase or module of the assembler belongs in its own structure.
• Exception and space handle
• Implement hashtable to store symbols.
• Too many nested functions, I should reformated them

Thanks

This project is inspired by CestDiego’s nand2tetris.el a lot. I also learn some elisp skills from his project