AK-21/Graphite-Industrial-Intelligence

1'use strict'2 3let pico = require('picocolors')4 5let terminalHighlight = require('./terminal-highlight')6 7class CssSyntaxError extends Error {8  constructor(message, line, column, source, file, plugin) {9    super(message)10    this.name = 'CssSyntaxError'11    this.reason = message12 13    if (file) {14      this.file = file15    }16    if (source) {17      this.source = source18    }19    if (plugin) {20      this.plugin = plugin21    }22    if (typeof line !== 'undefined' && typeof column !== 'undefined') {23      if (typeof line === 'number') {24        this.line = line25        this.column = column26      } else {27        this.line = line.line28        this.column = line.column29        this.endLine = column.line30        this.endColumn = column.column31      }32    }33 34    this.setMessage()35 36    if (Error.captureStackTrace) {37      Error.captureStackTrace(this, CssSyntaxError)38    }39  }40 41  setMessage() {42    this.message = this.plugin ? this.plugin + ': ' : ''43    this.message += this.file ? this.file : '<css input>'44    if (typeof this.line !== 'undefined') {45      this.message += ':' + this.line + ':' + this.column46    }47    this.message += ': ' + this.reason48  }49 50  showSourceCode(color) {51    if (!this.source) return ''52 53    let css = this.source54    if (color == null) color = pico.isColorSupported55 56    let aside = text => text57    let mark = text => text58    let highlight = text => text59    if (color) {60      let { bold, gray, red } = pico.createColors(true)61      mark = text => bold(red(text))62      aside = text => gray(text)63      if (terminalHighlight) {64        highlight = text => terminalHighlight(text)65      }66    }67 68    let lines = css.split(/\r?\n/)69    let start = Math.max(this.line - 3, 0)70    let end = Math.min(this.line + 2, lines.length)71    let maxWidth = String(end).length72 73    return lines74      .slice(start, end)75      .map((line, index) => {76        let number = start + 1 + index77        let gutter = ' ' + (' ' + number).slice(-maxWidth) + ' | '78        if (number === this.line) {79          if (line.length > 160) {80            let padding = 2081            let subLineStart = Math.max(0, this.column - padding)82            let subLineEnd = Math.max(83              this.column + padding,84              this.endColumn + padding85            )86            let subLine = line.slice(subLineStart, subLineEnd)87 88            let spacing =89              aside(gutter.replace(/\d/g, ' ')) +90              line91                .slice(0, Math.min(this.column - 1, padding - 1))92                .replace(/[^\t]/g, ' ')93 94            return (95              mark('>') +96              aside(gutter) +97              highlight(subLine) +98              '\n ' +99              spacing +100              mark('^')101            )102          }103 104          let spacing =105            aside(gutter.replace(/\d/g, ' ')) +106            line.slice(0, this.column - 1).replace(/[^\t]/g, ' ')107 108          return (109            mark('>') +110            aside(gutter) +111            highlight(line) +112            '\n ' +113            spacing +114            mark('^')115          )116        }117 118        return ' ' + aside(gutter) + highlight(line)119      })120      .join('\n')121  }122 123  toString() {124    let code = this.showSourceCode()125    if (code) {126      code = '\n\n' + code + '\n'127    }128    return this.name + ': ' + this.message + code129  }130}131 132module.exports = CssSyntaxError133CssSyntaxError.default = CssSyntaxError134