my programming language

a language I am creating for fun

Todo:

• testing:
  use testdata dir with files for files to parse and expected output
• fix the rest of this readme
• use jump instructions for if statements instead of what happens now
• for loops
• calling functions that are declared further down the file
• float litterals with e notation, eg. 1e-5
• generating (ssa) IR
• better errors
• type system: enums, interfaces
• optimization (definitely not for now)
• clean up codebase
• importing/modules

spec:

keywords

const var    fn        return
type  struct interface while
if    else   true      false

letters & digits

name	value
letter	unicode_letter | "_"
binary_digit	[01]
octal_digit	[0-7]
decimal_digit	[0-9]
hex_digit	[0-9A-Fa-f]
digit	decimal_digit

numbers

name	value
binary_number	"0b" (binary_digit) +
ocatal_number	"0o" (octal_digit) +
hex_number	"0x" (hex_digit) +
decimal_number	(decimal_digit) +
number	binary_number | octal_number | hex_number | decimal_number

identifiers

identifiers are names for things like functions, variables.

name	value
identifier	letter (letter | digit )*

expressions

a mathematical expression

Types

name	value
Type	Typename
Typename	identifier

variables

a variable is a way to store something

name	value
variable_decleration	"var" identifier ":" Type "=" Expression ";"
setting value	identifier = Expression ";"

constants

a constant is a compile-time expression which can be reused

name	value
const_decleration	"const" identifier ":" Type "=" Expression ";"

functions

you know what a function is

name	value
function_decleration	"fn" identifier "(" (identifier ":" Type) * ")" [ ":" Type ] "{" <code> "}"