Functionality

Functionality is an esoteric programming language written by User:Dominicentek with the goal being having the most functionality as possible.

Instructions

Variable Management

Instruction	Syntax	Description
var	<varname> <value>	Creates a new variable (if not created) and sets a value to it
del	<varname>	Removes a variable
tonum	<varname>	Converts a string to a number
tostr	<varname>	Converts a number to a string

Control Flow

Instruction	Syntax	Description
if	<value> <operator> <value>	Executes a code block if the condition is met
else		If an IF statement fails, it executes this code block instead
loop	<value>	Loops code block n times
function	<function name>	Creates a new function
call	<function name>	Calls a function
while	<value> <operator> <value>	Loops code block if the condition is met
exit		Exits the program

Console IO

Instruction	Syntax	Description
output	<value>	Outputs value to a console
input	<varname>	Stores console input to a variable

Graphical Output

Instruction	Syntax	Description
initializegfx	<width> <height>	Initializes graphical output
closegfx		Closes graphical output
drawarc	<x> <y> <width> <height> <start angle> <arc angle> [thickness]	Draws an arc
drawstring	<x> <y> <value> [fontname] [fontsize]	Draws a string/number
drawline	<x1> <y1> <x2> <y2> [thickness]	Draws a line
drawoval	<x> <y> <width> <height> [thickness]	Draws an oval
drawrect	<x> <y> <width> <height> [thickness]	Draws a rectangle
drawroundrect	<x> <y> <width> <height> <roundness> [thickness]	Draws a round rectangle
fillarc	<x> <y> <width> <height> <start angle> <arc angle>	Fills an arc
filloval	<x> <y> <width> <height>	Fills an oval
fillrect	<x> <y> <width> <height>	Fills an rectangle
fillroundrect	<x> <y> <width> <height> <roundness>	Fills a round rectangle
setbg	<r> <g> <b>	Sets background color
setfg	<r> <g> <b> [a]	Sets foreground color

String Management (these all begin with string instruction)

Instruction	Syntax	Description
substring	<varname> <value> <begin> <end>	Gets a substring of a value and stores it to a variable
charat	<varname> <value> <index>	Gets the character at an index of a value and stores it to a variable
length	<varname> <value>	Stores length of a value into a variable
insert	<varname> <value> <index> <insertion>	Inserts a string into another string to an index and stores it to a variable
replace	<varname> <value> <index> <char>	Replaces a character in a string and stores it to a variable
combine	<varname> <value> <value>	Combines two values together as a string and stores it to a variable
remove	<varname> <value> <begin> <end>	Removes a section of a string and stores it into a variable
indexof	<varname> <value> <char>	Stores the index of a character in a string to a variable
tocode	<varname> <char>	Converts a char into an ASCII code and stores it to a variable
fromcode	<varname> <value>	Converts a number to a char based on its ASCII code and stores it to a variable

Array Management (these all begin with array instruction)

Instruction	Syntax	Description
create	<array> [capacity]	Creates a new array
delete	<array>	Deletes an array
subarray	<dest> <source> <begin> <end>	Gets a subarray of an array
get	<array> <varname> <index>	Stores a value from an array into a variable
set	<array> <value> <index>	Stores a value from a variable into an array
length	<array> <varname>	Stores the length of an array into a variable
insert	<array> <value> <index>	Adds a value into an array at specific index
add	<array> <value>	Adds a value to an array
remove	<array> <index>	Removes an element at an index
indexof	<array> <varname> <value>	Stores an index of an element to a variable

Filesystem IO

Instruction	Syntax	Description
fscreatefile	<path>	Creates a new file
fscreatedir	<path>	Creates a new directory
fsdelete	<path>	Removes a file/directory
fscopy	<source> <dest folder>	Copies a file/directory
fsmove	<source> <destination>	Moves a file/directory
fsread	<varname> <path>	Reads from a file and stores it into a variable
fswrite	<path> <value>	Writes a string into a file

Values support:

• Math expressions (cannot contain space)

• x+y Addition
• x-y Subtraction
• x*y Multiplication
• x/y Division
• x%y Modulo
• x^y Power
• x&y Bitwise AND
• x|y Bitwise OR
• x~y Bitwise XOR
• ~x Bitwise REVERSE
• !x Bitwise NOT
• x<y Bitshift to left
• x>y Bitshift to right
• Brackets are also supported

• Number constants
• Variables (getting values from them)
• String constants (have to be in "")

Comparsion operators can be:

• == Equal to
• != Not equal to
• < Less than
• > Greater than
• <= Less than or equal to
• >= Greater than or equal to

Notes

• Code blocks are opened with [ and closed with ]
• Numbers are 64-bit signed integers
• If a string or array indexof fails, it stores a -1

Examples

Hello World

output "Hello, World"

Truth Machine

input inp
tonum inp
if inp == 0 [
  output 0
]
else [
  while 0 == 0 [
    output 1
  ]
]

Brainfuck Interpreter

This proves that this programming language is Turing complete

input code
string length len code
var index 0
array create cells 256
var pointer 0
while index < len [
  string charat char code index
  if char == "<" [
    var pointer pointer-1
    if pointer == -1 [
      var pointer pointer+1
    ]
  ]
  if char == ">" [
    var pointer pointer+1
    if pointer == 256 [
      var pointer pointer-1
    ]
  ]
  if char == "+" [
    array get cells value pointer
    var value value+1
    if value == 256 [
      var value value-1
    ]
    array set cells value pointer
  ]
  if char == "-" [
    array get cells value pointer
    var value value-1
    if value == -1 [
      var value value+1
    ]
    array set cells value pointer
  ]
  if char == "." [
    array get cells value pointer
    string fromcode value value
    output value
  ]
  if char == "," [
    input charinput
    if charinput == "" [
      var value 10
    ]
    else [
      string charat charinput character 0
      string tocode value character
    ]
    array set cells value pointer
  ]
  if char == "[" [
    array get cells value pointer
    if value == 0 [
      var i index
      var layer 0
      while i < len [
        string charat code character i
        if code == "[" [
          var layer layer+1
        ]
        if code == "]" [
          var layer layer-1
        ]
        if layer == -1 [
          var index i
        ]
        var i i+1
      ] 
    ]
  ]
  if char == "]" [
    array get cells value pointer
    if value != 0 [
      var i index
      var layer 0
      while i >= len [
        string charat code character i
        if code == "]" [
          var layer layer+1
        ]
        if code == "[" [
          var layer layer-1
        ]
        if layer == -1 [
          var index i
        ]
        var i i-1
      ] 
    ]
  ]
  var index index+1
]

Interpreter

• Cancelled

"Maybe one day I will make interpreter for it." Dominicentek (talk) 20:11, 22 August 2021 (UTC)