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export class SlashCommandParserError extends Error {
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    /**@type {String}*/ text;
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    /**@type {Number}*/ index;
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    get line() {
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        return this.text.slice(0, this.index).replace(/[^\n]/g, '').length;
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    }
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    get column() {
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        return this.text.slice(0, this.index).split('\n').pop().length;
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    }
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    get hint() {
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        let lineOffset = this.line.toString().length;
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        let lineStart = this.index;
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        let start = this.index;
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        let end = this.index;
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        let offset = 0;
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        let lineCount = 0;
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        while (offset < 10000 && lineCount < 3 && start >= 0) {
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            if (this.text[start] == '\n') lineCount++;
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            if (lineCount == 0) lineStart--;
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            offset++;
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            start--;
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        }
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        if (this.text[start + 1] == '\n') start++;
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        offset = 0;
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        while (offset < 10000 && this.text[end] != '\n') {
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            offset++;
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            end++;
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        }
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        let hint  = [];
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        let lines = this.text.slice(start + 1, end - 1).split('\n');
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        let lineNum = this.line - lines.length + 1;
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        let tabOffset = 0;
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        for (const line of lines) {
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            const num = `${' '.repeat(lineOffset - lineNum.toString().length)}${lineNum}`;
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            lineNum++;
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            const untabbedLine = line.replace(/\t/g, ' '.repeat(4));
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            tabOffset = untabbedLine.length - line.length;
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            hint.push(`${num}:  ${untabbedLine}`);
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        }
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        hint.push(`${' '.repeat(this.index - lineStart + lineOffset + 1 + tabOffset)}^^^^^`);
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        return hint.join('\n');
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    }
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    constructor(message, text, index) {
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        super(message);
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        this.text = text;
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        this.index = index;
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    }
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}