79 lines
2.3 KiB
TypeScript
79 lines
2.3 KiB
TypeScript
/**
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* language.ts - Definitions and utilities related to the Unlambda language.
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*
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* @author CismonX <admin@cismon.net>
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* @license MIT
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*/
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/**
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* Character which is readable and printable by Unlambda programs.
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*/
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export type Char =
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| '0' | '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' | '9' | 'A' | 'B'
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| 'C' | 'D' | 'E' | 'F' | 'G' | 'H' | 'I' | 'J' | 'K' | 'L' | 'M' | 'N'
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| 'O' | 'P' | 'Q' | 'R' | 'S' | 'T' | 'U' | 'V' | 'W' | 'X' | 'Y' | 'Z'
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| 'a' | 'b' | 'c' | 'd' | 'e' | 'f' | 'g' | 'h' | 'i' | 'j' | 'k' | 'l'
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| 'm' | 'n' | 'o' | 'p' | 'q' | 'r' | 's' | 't' | 'u' | 'v' | 'w' | 'x'
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| 'y' | 'z' | ' ' | '!' | '"' | '#' | '$' | '%' | '&' | "'" | '(' | ')'
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| '*' | '+' | ',' | '-' | '.' | '/' | ':' | ';' | '<' | '=' | '>' | '?'
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| '@' | '[' | ']' | '^' | '_' | '`' | '{' | '|' | '}' | '~' | '\\' | '\n';
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/**
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* A single character function.
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*/
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export type FuncNoChar = FuncRead | FuncComp | FuncPipe |
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FuncS | FuncK | FuncI | FuncV | FuncC | FuncD | FuncE | FuncR;
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export type FuncS = 's' | 'S';
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export type FuncK = 'k' | 'K';
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export type FuncI = 'i' | 'I';
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export type FuncV = 'v' | 'V';
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export type FuncC = 'c' | 'C';
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export type FuncD = 'd' | 'D';
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export type FuncE = 'e' | 'E';
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export type FuncR = 'r' | 'R';
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export type FuncRead = '@';
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export type FuncPipe = '|';
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/**
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* A function which holds a character.
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*/
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export type FuncChar = FuncPrint | FuncComp;
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export type FuncPrint = `.${Char}`;
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export type FuncComp = `?${Char}`;
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/**
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* A primitive function.
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*/
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export type PrimitiveFunc = FuncNoChar | FuncChar;
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/**
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* A function obtained by curry-ing primitive functions.
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*/
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export type CurriedFunc = FuncK1 | FuncS1 | FuncS2 | FuncC1 | FuncD1;
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export type FuncK1 = ['k1', Func];
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export type FuncS1 = ['s1', Func];
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export type FuncS2 = ['s2', Func, Func];
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export type FuncC1 = ['c1', any];
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export type FuncD1 = ['d1', Expression];
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/**
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* An Unlambda builtin function.
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*/
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export type Func = PrimitiveFunc | CurriedFunc;
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/**
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* Get the holding character of a function.
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*/
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export type GetFuncChar<S /* extends FuncChar */> =
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S extends `${any}${infer U}` ? U : never;
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/**
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* An expression is either a function or an application of two expressions.
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*/
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export type Expression = [Expression, Expression] | Func;
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/**
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* A whitespace character in Unlambda code.
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*/
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export type WhiteSpace = ' ' | '\n' | '\t';
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