securityos/node_modules/postcss-safe-parser/lib/safe-parser.js

100 lines
2.3 KiB
JavaScript

let tokenizer = require('postcss/lib/tokenize')
let Comment = require('postcss/lib/comment')
let Parser = require('postcss/lib/parser')
class SafeParser extends Parser {
createTokenizer() {
this.tokenizer = tokenizer(this.input, { ignoreErrors: true })
}
comment(token) {
let node = new Comment()
this.init(node, token[2])
let pos =
this.input.fromOffset(token[3]) ||
this.input.fromOffset(this.input.css.length - 1)
node.source.end = {
offset: token[3],
line: pos.line,
column: pos.col
}
let text = token[1].slice(2)
if (text.slice(-2) === '*/') text = text.slice(0, -2)
if (/^\s*$/.test(text)) {
node.text = ''
node.raws.left = text
node.raws.right = ''
} else {
let match = text.match(/^(\s*)([^]*\S)(\s*)$/)
node.text = match[2]
node.raws.left = match[1]
node.raws.right = match[3]
}
}
decl(tokens) {
if (tokens.length > 1 && tokens.some(i => i[0] === 'word')) {
super.decl(tokens)
}
}
unclosedBracket() {}
unknownWord(tokens) {
this.spaces += tokens.map(i => i[1]).join('')
}
unexpectedClose() {
this.current.raws.after += '}'
}
doubleColon() {}
unnamedAtrule(node) {
node.name = ''
}
precheckMissedSemicolon(tokens) {
let colon = this.colon(tokens)
if (colon === false) return
let nextStart, prevEnd
for (nextStart = colon - 1; nextStart >= 0; nextStart--) {
if (tokens[nextStart][0] === 'word') break
}
if (nextStart === 0) return
for (prevEnd = nextStart - 1; prevEnd >= 0; prevEnd--) {
if (tokens[prevEnd][0] !== 'space') {
prevEnd += 1
break
}
}
let other = tokens.slice(nextStart)
let spaces = tokens.slice(prevEnd, nextStart)
tokens.splice(prevEnd, tokens.length - prevEnd)
this.spaces = spaces.map(i => i[1]).join('')
this.decl(other)
}
checkMissedSemicolon() {}
endFile() {
if (this.current.nodes && this.current.nodes.length) {
this.current.raws.semicolon = this.semicolon
}
this.current.raws.after = (this.current.raws.after || '') + this.spaces
while (this.current.parent) {
this.current = this.current.parent
this.current.raws.after = ''
}
}
}
module.exports = SafeParser