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perf: use polymophism instead duck test

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harttle
2019-03-25 20:11:23 +08:00
parent 64dd057552
commit 82d7673554
18 changed files with 120 additions and 98 deletions
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src/parser/whitespace-ctrl.ts
+12 -21
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@@ -1,47 +1,38 @@
import DelimitedToken from '../parser/delimited-token'
import Token from '../parser/token'
import TagToken from '../parser/tag-token'
import HTMLToken from '../parser/html-token'
import { NormalizedFullOptions } from '../liquid-options'
export default function whiteSpaceCtrl (tokens: Token[], options: NormalizedFullOptions) {
options = { greedy: true, ...options }
let inRaw = false
tokens.forEach((token: Token, i: number) => {
if (shouldTrimLeft(token as DelimitedToken, inRaw, options)) {
for (let i = 0; i < tokens.length; i++) {
const token = tokens[i]
if (!inRaw && token.trimLeft) {
trimLeft(tokens[i - 1], options.greedy)
}
if (token.type === 'tag' && (token as TagToken).name === 'raw') inRaw = true
if (token.type === 'tag' && (token as TagToken).name === 'endraw') inRaw = false
if (TagToken.is(token)) {
if (token.name === 'raw') inRaw = true
else if (token.name === 'endraw') inRaw = false
}
if (shouldTrimRight(token as DelimitedToken, inRaw, options)) {
if (!inRaw && token.trimRight) {
trimRight(tokens[i + 1], options.greedy)
}
})
}
function shouldTrimLeft (token: DelimitedToken, inRaw: boolean, options: NormalizedFullOptions) {
if (inRaw) return false
if (token.type === 'tag') return token.trimLeft || options.trimTagLeft
if (token.type === 'output') return token.trimLeft || options.trimOutputLeft
}
function shouldTrimRight (token: DelimitedToken, inRaw: boolean, options: NormalizedFullOptions) {
if (inRaw) return false
if (token.type === 'tag') return token.trimRight || options.trimTagRight
if (token.type === 'output') return token.trimRight || options.trimOutputRight
}
}
function trimLeft (token: Token, greedy: boolean) {
if (!token || token.type !== 'html') return
if (!token || !HTMLToken.is(token)) return
const rLeft = greedy ? /\s+$/g : /[\t\r ]*$/g
token.value = token.value.replace(rLeft, '')
}
function trimRight (token: Token, greedy: boolean) {
if (!token || token.type !== 'html') return
if (!token || !HTMLToken.is(token)) return
const rRight = greedy ? /^\s+/g : /^[\t\r ]*\n?/g
token.value = token.value.replace(rRight, '')