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https://github.com/hornc/ixqus
ΙΧΘΥΣ is an esoteric programming language, based on Deadfish.
https://github.com/hornc/ixqus
deadfish esolang esoteric-language ixqus
Last synced: 25 days ago
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ΙΧΘΥΣ is an esoteric programming language, based on Deadfish.
- Host: GitHub
- URL: https://github.com/hornc/ixqus
- Owner: hornc
- Created: 2018-10-05T04:46:12.000Z (over 6 years ago)
- Default Branch: master
- Last Pushed: 2019-02-22T11:06:00.000Z (almost 6 years ago)
- Last Synced: 2024-11-17T22:29:48.406Z (3 months ago)
- Topics: deadfish, esolang, esoteric-language, ixqus
- Language: Python
- Size: 19.5 KB
- Stars: 3
- Watchers: 2
- Forks: 0
- Open Issues: 10
-
Metadata Files:
- Readme: README.md
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README
# ΙΧΘΥΣ / ἰχθῦς / ixqus
* νεκροΐχθυς (deadfish)
* ἀρχαῖος ἰχθῦς (ancient fish)
* παλαιός ἰχθῦς (old fish)
* γάρος (aged, fermented fish)
* ἰχθῦς σηπτός (rotten fish)
[ΙΧΘΥΣ](https://esolangs.org/wiki/%CE%99%CE%A7%CE%98%CE%A5%CE%A3) means 'fish' in Classical Greek. It is a derivative of firefly431's [Deadfish x](https://esolangs.org/wiki/Deadfish_x), and therefore a superset of Jonathan Todd Skinner's original [Deadfish](https://esolangs.org/wiki/Deadfish).
### Motivation
I wanted to experiment with creating a reduced instruction set esoteric (+joke) programming language that made use of archaic languages and alphabets (yay Unicode!). Deadfish seemed an appealing base, and Deadfish x seemed like a powerful extension by adding 'functions', even though I don't believe they are functions in a strict sense.
### ΙΧΘΥΣ Commands
| letter | term | action | CAPITAL | CAPITAL action |
| -- | -- | -- | -- | -- |
| ι | ἵστημι (raise / set up) | x+1 | Ι | Begin statement def |
| χ | χάζω (draw back) | x-1 | Χ | Set x to 0 |
| θ | Θʹ (9) a square number | x*x | Θ | End statement def (Θέτε! / Make!) |
| υ | ὑπάγω (bring forth) | display x | Υ | display x as Unicode character |
| ς | σύμβολον (symbol/token) | N/A | Σ | N/A |
### Details, and modifications from Deadfish x:
* Reinstates the original Deadfish 'overflow' arithmetic behaviour (reset to 0 iff accumulator equals -1 OR 256). It is a feature, not a bug. Essential to allow values over 256 and enable the Unicode output required by ΙΧΘΥΣ.
* Output is Unicode, not ASCII.
* Does not refer to the definable 'functions' (The `X` command in Deadfish X, `Ι` in ΙΧΘΥΣ) as 'functions' since they take no arguments, return no results, and can only produce side-effects. In ΙΧΘΥΣ they are called 'statements', and have a number of important features, listed below.
* Adds a dedicated symbol (sigma) for labelling new statements.
* Statements are a collection of one or more statement symbols associated with a symbol, 'ς'.
* There is no execute command (Deadfish x `C`) required to trigger a defined statement, ΙΧΘΥΣ simply interprets the symbol if it can find a definition.
* Statement definitions can be nested.
* Statements definitions can be recursive.
* Statement symbols can be read before they are defined (or after they have been removed). There is no error on unrecognised symbols, simply a NOOP.
* Appying subsequent satement definitions (`Ι`) to an existing symbol *appends* to the statement definition, not overwrites.
* A statement definition is *removed* from storage if the Deadfish 'overflow' condition is triggered while reading from its definition. Only the symbol definition is removed, no action is taken with copies currently being read.
* Built-in command definitions are *not* appendable or removable, but they can be overwritten with new statement definitions that use the original command symbol.
### Architecture
* A counting board (abacus) and pebbles to track the tally. (accumulator: *x*)
* A large pithos (storage jar) to store inscribed ostraka (clay fragments)
* A stack of papyrus sheets to track current symbols (primary storage)
* A line in the sand creating two rows, (2 register stacks)
* one above for a list of ostraka currently being read
* the other below for a list of ostraka currently being written
* A magic fish that can manifest Unicode specification characters
**Other equipment:** A sharp point for inscribing ostraka, a reed pen and ink for transcribing to papyrus, a wooden stick for drawing σύμβολα in the sand, many blank potsherds, a pile of extra abacuses and stones (for `θ`), wine.
**Procedure:** The slave/scribe (δοῦλος) begins with a sheet of papyrus, already containing some symbols.
... _TODO: expand this section_ ...
New statements are inscribed on ostraka, assigned a symbol (sigma) and placed in the pithos.
### Examples
"Hello, World!" (direct port from the Deadfish x version)
```ΙΧΘΥΣ
ιιθιιιιθιιιιιιιιΥΧιιθιιιιιιθιΥιιιιιιιΥΥιιιΥΧιιιιιιιθχχχχχΥΧιιιιιιθχχχχΥΧιιιθιιθχχΥχχχχχχχχΥιιιΥχχχχχχΥχχχχχχχχΥΧιιιιιιθχχχΥ
```
**OUTPUT:** `Hello, world!`
Alphabet (Latin), again ported, but compressed, from Deadfish x example:
```ΙΧΘΥΣ
ΙΣιΥΘιιθιιιιθΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣ
```
**OUTPUT:** `ABCDEFGHIJKLMNOPQRSTUVWXYZ`
With its Unicode support, ΙΧΘΥΣ can just as easily display the Greek alphabet
```ΙΧΘΥΣ
XΙΣιΥΘιιιιιθιιιιιθιιιιιιιιιιιιΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣιΣΣΣΣΣΣΣ
```
**OUTPUT:** `ΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩ`
And is not just limited to Greek, but can output from any Unicode block, for example, in Phoenician:
```ΙΧΘΥΣ
ΧΙΣιΥΘΙσχχχχχχχχχχχχχχχχχχχχχχχχχχχχΘιιιθιιιιιιιιθσθχχσσσσσσσσσσΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣΣ
```
**OUTPUT:** `𐤀𐤁𐤂𐤃𐤄𐤅𐤆𐤇𐤈𐤉𐤊𐤋𐤌𐤍𐤎𐤏𐤐𐤑𐤒𐤓𐤔𐤕`
#### Non-Latin charset "Hello World"s
A more representative example for ΙΧΘΥΣ is to print 'Hello World' in Classical Greek:
```ΙΧΘΥΣ
ΙΣΧιιιιιθιιιιιιθΘΙϛχχχχχχχΘΙσϛϛιΘΙϲιιιιιιιιΘΣσσΥϲιιΥϲΥϲΥισΥΧιιθιιθϲΥΣσσσΥϲϲϲϲϲχχχΥιιιιΥϛΥϛΥΧιιιιιθϲΥ
```
**OUTPUT:** `Χαιρε,Κοσμε!`
#### Deadfish interpreter in ΙΧΘΥΣ
Since ΙΧΘΥΣ is a superset of Deadfish, it is relatively trivial to create a compliant Deadfish interpreter, e.g. for standard "idso" version:
```ΙΧΘΥΣ
ΙiιΘΙdχΘΙsθΘΙoυΘΧ
```
### File Extension
The official file extension for ΙΧΘΥΣ code is `.ἰχ`, U+1F30 U+03C7, not to be confused with the letters `ix`.
### The SYNTAX ERROR
There is only one form of syntax error in ΙΧΘΥΣ.
Any line terminated with a sigma / σύμβολον character that is not a final-form sigma will result in a **SYNTAX ERROR**.
On encountering such a **SYNTAX ERROR**, it may be challenged by an argument referencing at least one *published* academic article from the
fields of classical studies, epigraphy, philology, or even less plausibly, computer science etc.
This does not mean lines _have_ to end in a sigma, simply that if they do, they must be of an appropriate final form.
**valid**
```ΙΧΘΥΣ
>> ΙΣιιιυΘΣ
3
```
```ΙΧΘΥΣ
>> ΙςιιιυΘς
3
```
**invalid**
```ΙΧΘΥΣ
>> ΙσιιιυΘσ
?SYNTAX ERROR
```
### The Non-Aristotelian Syllogism
* All Unicode code points can be represented by ΙΧΘΥΣ, except Ā, Latin Capital Letter A With Macron (U+0100).
* Ā, 'Null-A', refers to non-Aristotelian logic. [¹](https://en.wikipedia.org/wiki/The_World_of_Null-A#Non-Aristotelian%20logic)
* Therefore, ΙΧΘΥΣ cannot represent non-Aristotelian logic.
### Localisation
### Computational Class