export type Position = { index: number; line: number; col: number };

export type CompileError = { pos: Position; message: string };

export type DynamicTokenType = "id" | "int";

export type StaticTokenType =
    | "eof"
    | "invalid"
    | "lparen"
    | "rparen"
    | "lbrace"
    | "rbrace"
    | "lbracket"
    | "rbracket"
    | "dot"
    | "comma"
    | "colon"
    | "semicolon"
    | "plus"
    | "plusplus"
    | "plusequal"
    | "minus"
    | "minusminus"
    | "minusequal"
    | "minusgt"
    | "asterisk"
    | "tilde"
    | "ampersand"
    | "ampersandequal"
    | "pipe"
    | "pipeequal"
    | "hat"
    | "hatequal"
    | "equal"
    | "equalequal"
    | "exclamation"
    | "exclamationequal"
    | "lt"
    | "gt"
    | "ltequal"
    | "gtequal"
    | "not"
    | "and"
    | "or"
    | "let"
    | "mut"
    | "fn"
    | "return"
    | "if"
    | "else"
    | "loop"
    | "while"
    | "break"
    | "continue";

export type TokenType = DynamicTokenType | StaticTokenType;

export type Token =
    & {
        pos: Position;
    }
    & (
        | { tokenType: "id"; value: string }
        | {
            tokenType: "int";
            value: number;
        }
        | {
            tokenType: StaticTokenType;
        }
    );

export interface TokenIter {
    next(): Token;
}