EsoCaml is a simple esoteric programming language, quickly developed for funny. To be honest, this is an esoteric front-end for a simple PL (see Fhree) I developed early. Thus, this is a functional EsoLang inspired by reMorse with an OCaml-like back-end.
If you want to understand how the back-end works, you can read the Fhree's documentation.
In EsoCaml, constants and identifiers must be written in morse code, and the constants must begin with 3 letters that specify the type. If there is no type at the beginning of the word, It will be treated as an identifier.
Morse Code
| Character | Morse Code |
|---|---|
| A | .- |
| B | -... |
| C | -.-. |
| D | -.. |
| E | . |
| F | ..-. |
| G | --. |
| H | .... |
| I | .. |
| J | .--- |
| K | -.- |
| L | .-.. |
| M | -- |
| N | -. |
| O | --- |
| P | .--. |
| Q | --.- |
| R | .-. |
| S | ... |
| T | - |
| U | ..- |
| V | ...- |
| W | .-- |
| X | -..- |
| Y | -.-- |
| Z | --.. |
| 0 | ----- |
| 1 | .---- |
| 2 | ..--- |
| 3 | ...-- |
| 4 | ....- |
| 5 | ..... |
| 6 | -.... |
| 7 | --... |
| 8 | ---.. |
| 9 | ----. |
| . | .-.-.- |
| , | --..-- |
| ? | ..--.. |
| ' | .----. |
| ! | -.-.-- |
| / | -..-. |
| ( | -.--. |
| ) | -.--.- |
| & | .-... |
| : | ---... |
| ; | -.-.-. |
| = | -...- |
| + | .-.-. |
| - | -....- |
| _ | ..--.- |
| " | .-..-. |
| $ | ...-..- |
| @ | .--.-. |
Literals
| Literal Type | Prefix | Example | Value | Morse |
|---|---|---|---|---|
| Int | INT | INT42 | 42 | .. -. - ....- ..--- | |
| Char | CHR | CHRT | 'T' | -.-. .... .-. - |
| Float | FLT | FLT0.18 | 0.18 | ..-. .-.. - ----- .-.-.- .---- ---.. |
| Bool | BOL | BOLTRUE | true | -... --- --- .-.. - .-. ..- . |
| String | STR | STRHELLO_WORD | Hello World | ... - .-. .... . .-.. .-.. ---__.-- --- .-. .-.. -.. |
Keywords, Operators and types (for type annotations) are divided in three rotating wheels:
| Keywords | Operators | Type Annotation |
|---|---|---|
| LET | + | int |
| IN | - | char |
| IF | * | float |
| THEN | / | bool |
| ELSE | +. | string |
| FUN | -. | list |
| LAMBDA | *. | |
| NOT | /. | |
| AND | == | |
| OR | != | |
| PROJ | < | |
| HEAD | > | |
| TAIL | <= | |
| >= | ||
| ^ | ||
| :: | ||
| > |
You can handle the rotating wheels by an unique, shared, index.
| Operator | Effect |
|---|---|
> |
Increase the index by 1 |
! |
Enter the current keyword |
@ |
Enter the current operator |
# |
Enter the current type annotation |
The index begins with 0 and is restarted when a keyword, an operator or a type is chosen.
In addition to these keywords and operators, you can use the following special ones:
| Symbol | Meaning |
|---|---|
, |
For constructing tuples and lists |
( |
Left parenthesis for tuples |
) |
Right parenthesis for tuples |
[ |
Left bracket for lists |
] |
Right bracket for lists |
: |
For type annotations |
-> |
For functional types |
For simplicity, you can use the character | as separator between morse code statements and the character _ as space between two morse code words.
Since the only legal characters are: . - > ! @ # , ( ) [ ] : _, every other character will be ignored and can be used for comments.
Due to the complexity of this language, it has been tested very little. EsoCaml is just a toy language, but if you want to play with it, please, let me know what do you think about it! :)