Moed

Moed (pronounced /mid/) is an esoteric programming language by User:Dhzb.

Whitespace

Whitespace is sometimes significant.

Newlines

Newlines can be scoped inside of {...} groups which can be targeted by newline-imperae.

Execution

Moed executes in a given direction which is initialized to 1 (right), the direction can be changed to other values by using one of three dexterimperae.

Data storage

Moed primarily uses the stack to store short-term data but also provides a secondary medium which is the matrix

Imperae

Currently, Moed has 2 types of imperae: Dexterimperae and Sinisterimperae. Each imperae has an associated symbol to represent it.

Dexterimperae

All dexterimperae

Symbol	Name	Description
0-9	Digit	Pushes the corresponding digit onto the stack
>	Right	Sets the direction of execution to 1
<	Left	Sets the direction of execution to -1
|	Mirror	Mirrors (by negating) the execution direction
_	Newline	Jumps to the next character of the next newline in the current scope
"	Subnewline	Pops n and jumps to the next character of the next newline in the scope n levels up
=	Skip	Skips over one execution step (including groups as one execution step)
+	Addition	Pops x and y and pushes x+y onto the stack
-	Subtraction	Pops x and y and pushes x-y onto the stack
*	Multiplication	Pops x and y and pushes x×y onto the stack
/	Division	Pops x and y and pushes x÷y onto the stack (0 divisor returns 0)
%	Modulo	Pops x and y and pushes x mod y onto the stack (negative wraps around, 0 divisor returns 0)
^	Exponentiation	Pops x and y and pushes xy onto the stack
\	Swap	Swaps the top 2 values on the stack
$	Discard	Pops a value and discards it
'	Character	Skips one execution step and pushes the character at the execution pointer onto the stack
:	Duplicate	Duplicates the top value on the stack
;	Duplicate	Pops n and duplicates the nth value from the top of the stack (starting at 0) to the top of the stack
&	Incharacter	Gets a character from input
?	Auxiliary incharacter	Gets a character from auxiliary input
#	Innumber	Gets a number literal from input
,	Outcharacter	Outputs a character from the stack (pop)
.	Outnumber	Outputs a number literal from the stack (pop)
`	Unvalencitudinity	If top of stack (don't pop) is nonzero, continue forwards, otherwise mirror+skip
~	Sinisterimpera toggle	Interpret the characters as sinisterimperae from now on
@	Stop	Halts the program execution
(...)	Special	Does a special operation based on the first character in it and the rest of the string
J	Jump	Pops n and jumps to the nth j relative to the current character
I	Pause	Pauses execution
R	Return	Returns to the previous location before a custom impera call
Any other character	Call	Goes to the location associated with the character

Sinisterimperae

All sinisterimperae

Symbol	Name	Description
|	Set	Pops y, x, and v and sets the value at the corresponding position x,y in the matrix to v
^	Get	Pops y and x and pushes the value at the corresponding position x,y in the matrix onto the stack
=	Skip	Does the same as it is as a dexterimpera except that it doesn't skip groups
?	Random	Pushes a random number in the range [0,1)
.	Floor	Applies a floor function on the top value on the stack
:	Ceiling	Applies a ceiling function on the top value on the stack
;	Round	Applies a round function on the top value on the stack
~	Dexterimpera toggle	Interpret the characters as dexterimperae from now on
Any other character		Does nothing

Special operations

All special operations

First character	Description
"	Pushes the rest of the string onto the stack starting from the end of the string
&	Prints the rest of the string
=	Associates a location (after the '=') with the popped character on the stack
Any other character	Does nothing

Examples

Moed/Examples

Computational class

User:Dhzb has created a brainfuck interpreter in Moed, therefore, Moed is turing-complete

Implementation

• p5js interpreter

Future additions

• [✓] Custom operations (e.g. '√(=21/\^)) -- now '√(=21/\^R)
• [✓] Pause execution