Mountain
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- Not be confused with the earlier version of the language.
Mountain is a stack-based esolang created by User:ChuckEsoteric08 which was inpired by Grass. Program is made out of two characters: ʌ and ʍ.
Commands
Instructions are 1-indexed
| Pseudocode | Instruction | Meaning |
|---|---|---|
| psh | ʌʍ...ʍ | push the number of ʌ (which shouldn't be zero) between ʍ's to the stack |
| neg | ʌʍʍ | negate top element |
| jmp | ʌʌʍ | pop n, a and b and if a is equal to b jump to the n-th instruction. If n is negative or 0 halt |
| add | ʌʌʍʍ | pop a and b push b+a |
| rot | ʌʍʍʍ | pop number from the bottom and push it to the top |
| dup | ʌʌʌʍ | duplicate top element |
| out | ʌʌʍʍʍ | pop number and output it as ASCII character |
| inp | ʌʍʍʍʍ | push next byte of input to the stack |
Computational class
Mountain is Turing-complete because it can simulate Minsky machine.
Examples
Cat Program
The following program demonstrates an infinitely repeating cat program:
ʌʍʍʍʍ ʌʌʍʍʍ ʌʍʌʍ ʌʍʌʍ ʌʍʌʍ ʌʌʍ
Truth-Machine
A truth-machine is implemented below:
ʌʍʍʍʍ ʌʌʌʍ ʌʌʍʍʍ ʌʌʌʍ ʌʍʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʌʍ ʌʍʌʌʍ ʌʌʍ
Interpreter
- Common Lisp implementation of the Mountain programming language. Please note that the concrete character set deployed constitutes a dependency on the Common Lisp implementation; in corollary, Unicode support may or may not be a feature incorporated in the personal environment. The interpreter at hand has been developed and tested with Steel Bank Common Lisp (SBCL) version 1.1.4 as part of the Lisp Cabinet 0.3.5 bundle.