Mention

Mention is a programming language created by User:PKMN Trainer.

Syntax

Instructions are written like this (Operands may not be in the instruction):

(instruction symbol) (operand1) (operand2)(end instruction indicator)

Operands may be instructions; however, a variable command can only have one operand if it is an operand. Immediates in Mention are written in binary.

The following symbols are used to end an instruction.

• Newline
• Semicolon (;)
• Dot (.)
• Slash (/)

Mention has 6 instructions.

Command	Description	Followed by	Example	Psuedocode
v	Defines and/or mentions variable	1 or 2 operands	v 0 1; v 0	v0 = 1; mention.append(v0)
-	Contains the difference between the last two mentioned variables	0 operands	v 0 -	v0 = mention[len(mention)-1) - mention[len(mention)-2]
i	Contains input	0 operands	v 0 i	v0 = input
o	Outputs the last mentioned variable. If the next operand is 0, it is output as a number; otherwise, it is output as a character.	1 operand	v 0; o 0	mention.append(v0); output_num(mention[len(mention)-1])
*	When next to a variable, it changes the variable's meaning to the nth character of code (n is the value of the variable)	1 operand	v 0 *v 1	v0 = nth_char_of_code(v1)
B	Branches to the line corresponding to the value of the operand if the last mentioned variable is 0 or less.	1 operand	v 0 0; B 0	v0 = 0; if v0 <=0 {goto v0}

Programs

Hello World Program

v 0 01001000 // H
o 1
v 1 01100101 // e
o 1
v 10 01101100 // l
o 1
o 1
v 11 01101111 // o
o 1
v 100 00100000 // space
o 1
v 101 01010111 // W
o 1
v 11 // o
o 1
v 110 01110000 // r
o 1
v 10 // l
o 1
v 111 01100100 // d
o 1

Truth-machine

v 0 i
o 0
B 7
v 0 1
o 0
v 1 0
B 3

Cat

v 0 i
o 0
B 5
v 1 0
B 0

Infinite loop

B 0

Adder

v 0 i
v 1 0
v 10 i
v 1 -
v 0
v 1
v 10 -
o 0

Computational class

Currently, Mention is presumed to be Turing Complete as the commands v, -, and B can be used to replicate a Subleq instruction, which is Turing Complete. Catergory:Turing complete