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import { TextDocument, Range, Position } from 'vscode-languageserver'
import { DocumentClassName, DocumentClassList, State } from './state'
import lineColumn from 'line-column'
import { isCssContext, isCssDoc } from './css'
import { isHtmlContext, isHtmlDoc, isSvelteDoc, isVueDoc } from './html'
import { isWithinRange } from './isWithinRange'
import { isJsContext, isJsDoc } from './js'
import { getClassAttributeLexer } from './lexers'
export function findAll(re: RegExp, str: string): RegExpMatchArray[] {
let match: RegExpMatchArray
let matches: RegExpMatchArray[] = []
while ((match = re.exec(str)) !== null) {
matches.push({ ...match })
}
return matches
}
export function findLast(re: RegExp, str: string): RegExpMatchArray {
const matches = findAll(re, str)
if (matches.length === 0) {
return null
}
return matches[matches.length - 1]
}
export function findClassNamesInRange(
doc: TextDocument,
range?: Range,
mode?: 'html' | 'css'
): DocumentClassName[] {
const classLists = findClassListsInRange(doc, range, mode)
return [].concat.apply(
[],
classLists.map(({ classList, range }) => {
const parts = classList.split(/(\s+)/)
const names: DocumentClassName[] = []
let index = 0
for (let i = 0; i < parts.length; i++) {
if (i % 2 === 0) {
const start = indexToPosition(classList, index)
const end = indexToPosition(classList, index + parts[i].length)
names.push({
className: parts[i],
range: {
start: {
line: range.start.line + start.line,
character:
(end.line === 0 ? range.start.character : 0) +
start.character,
},
end: {
line: range.start.line + end.line,
character:
(end.line === 0 ? range.start.character : 0) + end.character,
},
},
})
}
index += parts[i].length
}
return names
})
)
}
export function findClassListsInCssRange(
doc: TextDocument,
range?: Range
): DocumentClassList[] {
const text = doc.getText(range)
const matches = findAll(/(@apply\s+)(?<classList>[^;}]+)[;}]/g, text)
const globalStart: Position = range ? range.start : { line: 0, character: 0 }
return matches.map((match) => {
const start = indexToPosition(text, match.index + match[1].length)
const end = indexToPosition(
text,
match.index + match[1].length + match.groups.classList.length
)
return {
classList: match.groups.classList,
range: {
start: {
line: globalStart.line + start.line,
character:
(end.line === 0 ? globalStart.character : 0) + start.character,
},
end: {
line: globalStart.line + end.line,
character:
(end.line === 0 ? globalStart.character : 0) + end.character,
},
},
}
})
}
export function findClassListsInHtmlRange(
doc: TextDocument,
range: Range
): DocumentClassList[] {
const text = doc.getText(range)
const matches = findAll(/[\s:]class(?:Name)?=['"`{]/g, text)
const result: DocumentClassList[] = []
matches.forEach((match) => {
const subtext = text.substr(match.index + match[0].length - 1, 200)
let lexer = getClassAttributeLexer()
lexer.reset(subtext)
let classLists: { value: string; offset: number }[] = []
let token: moo.Token
let currentClassList: { value: string; offset: number }
try {
for (let token of lexer) {
if (token.type === 'classlist') {
if (currentClassList) {
currentClassList.value += token.value
} else {
currentClassList = {
value: token.value,
offset: token.offset,
}
}
} else {
if (currentClassList) {
classLists.push({
value: currentClassList.value,
offset: currentClassList.offset,
})
}
currentClassList = undefined
}
}
} catch (_) {}
if (currentClassList) {
classLists.push({
value: currentClassList.value,
offset: currentClassList.offset,
})
}
result.push(
...classLists
.map(({ value, offset }) => {
if (value.trim() === '') {
return null
}
const before = value.match(/^\s*/)
const beforeOffset = before === null ? 0 : before[0].length
const after = value.match(/\s*$/)
const afterOffset = after === null ? 0 : -after[0].length
const start = indexToPosition(
text,
match.index + match[0].length - 1 + offset + beforeOffset
)
const end = indexToPosition(
text,
match.index +
match[0].length -
1 +
offset +
value.length +
afterOffset
)
return {
classList: value,
range: {
start: {
line: range.start.line + start.line,
character:
(end.line === 0 ? range.start.character : 0) +
start.character,
},
end: {
line: range.start.line + end.line,
character:
(end.line === 0 ? range.start.character : 0) + end.character,
},
},
}
})
.filter((x) => x !== null)
)
})
return result
}
export function findClassListsInRange(
doc: TextDocument,
range: Range,
mode: 'html' | 'css'
): DocumentClassList[] {
if (mode === 'css') {
return findClassListsInCssRange(doc, range)
}
return findClassListsInHtmlRange(doc, range)
}
export function findClassListsInDocument(
state: State,
doc: TextDocument
): DocumentClassList[] {
if (isCssDoc(state, doc)) {
return findClassListsInCssRange(doc)
}
if (isVueDoc(doc)) {
let text = doc.getText()
let blocks = findAll(
/<(?<type>template|style|script)\b[^>]*>.*?(<\/\k<type>>|$)/gis,
text
)
let htmlRanges: Range[] = []
let cssRanges: Range[] = []
for (let i = 0; i < blocks.length; i++) {
let range = {
start: indexToPosition(text, blocks[i].index),
end: indexToPosition(text, blocks[i].index + blocks[i][0].length),
}
if (blocks[i].groups.type === 'style') {
cssRanges.push(range)
} else {
htmlRanges.push(range)
}
}
return [].concat.apply(
[],
[
...htmlRanges.map((range) => findClassListsInHtmlRange(doc, range)),
...cssRanges.map((range) => findClassListsInCssRange(doc, range)),
]
)
}
if (isHtmlDoc(state, doc) || isJsDoc(state, doc) || isSvelteDoc(doc)) {
let text = doc.getText()
let styleBlocks = findAll(/<style(?:\s[^>]*>|>).*?(<\/style>|$)/gis, text)
let htmlRanges: Range[] = []
let cssRanges: Range[] = []
let currentIndex = 0
for (let i = 0; i < styleBlocks.length; i++) {
htmlRanges.push({
start: indexToPosition(text, currentIndex),
end: indexToPosition(text, styleBlocks[i].index),
})
cssRanges.push({
start: indexToPosition(text, styleBlocks[i].index),
end: indexToPosition(
text,
styleBlocks[i].index + styleBlocks[i][0].length
),
})
currentIndex = styleBlocks[i].index + styleBlocks[i][0].length
}
htmlRanges.push({
start: indexToPosition(text, currentIndex),
end: indexToPosition(text, text.length),
})
return [].concat.apply(
[],
[
...htmlRanges.map((range) => findClassListsInHtmlRange(doc, range)),
...cssRanges.map((range) => findClassListsInCssRange(doc, range)),
]
)
}
return []
}
function indexToPosition(str: string, index: number): Position {
const { line, col } = lineColumn(str + '\n', index)
return { line: line - 1, character: col - 1 }
}
export function findClassNameAtPosition(
state: State,
doc: TextDocument,
position: Position
): DocumentClassName {
let classNames = []
const searchRange = {
start: { line: Math.max(position.line - 10, 0), character: 0 },
end: { line: position.line + 10, character: 0 },
}
if (isCssContext(state, doc, position)) {
classNames = findClassNamesInRange(doc, searchRange, 'css')
} else if (
isHtmlContext(state, doc, position) ||
isJsContext(state, doc, position)
) {
classNames = findClassNamesInRange(doc, searchRange, 'html')
}
if (classNames.length === 0) {
return null
}
const className = classNames.find(({ range }) =>
isWithinRange(position, range)
)
if (!className) return null
return className
}
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