| 1 | 'use strict'
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| 2 |
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| 3 | let pico = require('picocolors')
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| 4 |
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| 5 | let terminalHighlight = require('./terminal-highlight')
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| 6 |
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| 7 | class CssSyntaxError extends Error {
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| 8 | constructor(message, line, column, source, file, plugin) {
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| 9 | super(message)
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| 10 | this.name = 'CssSyntaxError'
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| 11 | this.reason = message
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| 12 |
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| 13 | if (file) {
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| 14 | this.file = file
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| 15 | }
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| 16 | if (source) {
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| 17 | this.source = source
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| 18 | }
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| 19 | if (plugin) {
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| 20 | this.plugin = plugin
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| 21 | }
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| 22 | if (typeof line !== 'undefined' && typeof column !== 'undefined') {
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| 23 | if (typeof line === 'number') {
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| 24 | this.line = line
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| 25 | this.column = column
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| 26 | } else {
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| 27 | this.line = line.line
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| 28 | this.column = line.column
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| 29 | this.endLine = column.line
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| 30 | this.endColumn = column.column
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| 31 | }
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| 32 | }
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| 33 |
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| 34 | this.setMessage()
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| 35 |
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| 36 | if (Error.captureStackTrace) {
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| 37 | Error.captureStackTrace(this, CssSyntaxError)
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| 38 | }
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| 39 | }
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| 40 |
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| 41 | setMessage() {
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| 42 | this.message = this.plugin ? this.plugin + ': ' : ''
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| 43 | this.message += this.file ? this.file : '<css input>'
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| 44 | if (typeof this.line !== 'undefined') {
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| 45 | this.message += ':' + this.line + ':' + this.column
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| 46 | }
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| 47 | this.message += ': ' + this.reason
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| 48 | }
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| 49 |
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| 50 | showSourceCode(color) {
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| 51 | if (!this.source) return ''
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| 52 |
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| 53 | let css = this.source
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| 54 | if (color == null) color = pico.isColorSupported
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| 55 | if (terminalHighlight) {
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| 56 | if (color) css = terminalHighlight(css)
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| 57 | }
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| 58 |
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| 59 | let lines = css.split(/\r?\n/)
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| 60 | let start = Math.max(this.line - 3, 0)
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| 61 | let end = Math.min(this.line + 2, lines.length)
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| 62 |
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| 63 | let maxWidth = String(end).length
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| 64 |
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| 65 | let mark, aside
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| 66 | if (color) {
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| 67 | let { bold, gray, red } = pico.createColors(true)
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| 68 | mark = text => bold(red(text))
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| 69 | aside = text => gray(text)
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| 70 | } else {
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| 71 | mark = aside = str => str
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| 72 | }
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| 73 |
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| 74 | return lines
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| 75 | .slice(start, end)
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| 76 | .map((line, index) => {
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| 77 | let number = start + 1 + index
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| 78 | let gutter = ' ' + (' ' + number).slice(-maxWidth) + ' | '
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| 79 | if (number === this.line) {
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| 80 | let spacing =
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| 81 | aside(gutter.replace(/\d/g, ' ')) +
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| 82 | line.slice(0, this.column - 1).replace(/[^\t]/g, ' ')
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| 83 | return mark('>') + aside(gutter) + line + '\n ' + spacing + mark('^')
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| 84 | }
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| 85 | return ' ' + aside(gutter) + line
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| 86 | })
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| 87 | .join('\n')
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| 88 | }
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| 89 |
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| 90 | toString() {
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| 91 | let code = this.showSourceCode()
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| 92 | if (code) {
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| 93 | code = '\n\n' + code + '\n'
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| 94 | }
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| 95 | return this.name + ': ' + this.message + code
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| 96 | }
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| 97 | }
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| 98 |
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| 99 | module.exports = CssSyntaxError
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| 100 | CssSyntaxError.default = CssSyntaxError
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