import type { TextDocument, Range, Position } from 'vscode-languageserver' import { DocumentClassName, DocumentClassList, State, DocumentHelperFunction } from './state' import lineColumn from 'line-column' import { isCssContext, isCssDoc } from './css' import { isHtmlContext } from './html' import { isWithinRange } from './isWithinRange' import { isJsContext } from './js' import { flatten } from './array' import { getClassAttributeLexer, getComputedClassAttributeLexer } from './lexers' import { getLanguageBoundaries } from './getLanguageBoundaries' import { resolveRange } from './resolveRange' const dlv = require('dlv') import { createMultiRegexp } from './createMultiRegexp' 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 getClassNamesInClassList({ classList, range, important, }: DocumentClassList): DocumentClassName[] { 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], classList: { classList, range, important, }, relativeRange: { start, end, }, 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 async function findClassNamesInRange( state: State, doc: TextDocument, range?: Range, mode?: 'html' | 'css', includeCustom: boolean = true ): Promise { const classLists = await findClassListsInRange(state, doc, range, mode, includeCustom) return flatten(classLists.map(getClassNamesInClassList)) } export async function findClassNamesInDocument( state: State, doc: TextDocument ): Promise { const classLists = await findClassListsInDocument(state, doc) return flatten(classLists.map(getClassNamesInClassList)) } export function findClassListsInCssRange(doc: TextDocument, range?: Range): DocumentClassList[] { const text = doc.getText(range) const matches = findAll( /(@apply\s+)(?[^;}]+?)(?\s*!important)?\s*[;}]/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, important: Boolean(match.groups.important), 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, }, }, } }) } async function findCustomClassLists( state: State, doc: TextDocument, range?: Range ): Promise { const settings = await state.editor.getConfiguration(doc.uri) const regexes = dlv(settings, 'tailwindCSS.experimental.classRegex', []) if (!Array.isArray(regexes) || regexes.length === 0) return [] const text = doc.getText(range) const result: DocumentClassList[] = [] for (let i = 0; i < regexes.length; i++) { try { let [containerRegex, classRegex] = Array.isArray(regexes[i]) ? regexes[i] : [regexes[i]] containerRegex = createMultiRegexp(containerRegex) let containerMatch while ((containerMatch = containerRegex.exec(text)) !== null) { const searchStart = doc.offsetAt(range?.start || { line: 0, character: 0 }) const matchStart = searchStart + containerMatch.start const matchEnd = searchStart + containerMatch.end if (classRegex) { classRegex = createMultiRegexp(classRegex) let classMatch while ((classMatch = classRegex.exec(containerMatch.match)) !== null) { const classMatchStart = matchStart + classMatch.start const classMatchEnd = matchStart + classMatch.end result.push({ classList: classMatch.match, range: { start: doc.positionAt(classMatchStart), end: doc.positionAt(classMatchEnd), }, }) } } else { result.push({ classList: containerMatch.match, range: { start: doc.positionAt(matchStart), end: doc.positionAt(matchEnd), }, }) } } } catch (_) {} } return result } export function matchClassAttributes(text: string, attributes: string[]): RegExpMatchArray[] { const attrs = attributes.filter((x) => typeof x === 'string').flatMap((a) => [a, `\\[${a}\\]`]) const re = /(?:\s|:|\()(ATTRS)\s*=\s*['"`{]/ return findAll(new RegExp(re.source.replace('ATTRS', attrs.join('|')), 'gi'), text) } export async function findClassListsInHtmlRange( state: State, doc: TextDocument, range?: Range ): Promise { const text = doc.getText(range) const matches = matchClassAttributes( text, (await state.editor.getConfiguration(doc.uri)).tailwindCSS.classAttributes ) const result: DocumentClassList[] = [] matches.forEach((match) => { const subtext = text.substr(match.index + match[0].length - 1) let lexer = match[0][0] === ':' || (match[1].startsWith('[') && match[1].endsWith(']')) ? getComputedClassAttributeLexer() : 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.substr(beforeOffset, value.length + afterOffset), range: { start: { line: (range?.start.line || 0) + start.line, character: (end.line === 0 ? range?.start.character || 0 : 0) + start.character, }, end: { line: (range?.start.line || 0) + end.line, character: (end.line === 0 ? range?.start.character || 0 : 0) + end.character, }, }, } }) .filter((x) => x !== null) ) }) return result } export async function findClassListsInRange( state: State, doc: TextDocument, range?: Range, mode?: 'html' | 'css', includeCustom: boolean = true ): Promise { let classLists: DocumentClassList[] if (mode === 'css') { classLists = findClassListsInCssRange(doc, range) } else { classLists = await findClassListsInHtmlRange(state, doc, range) } return [...classLists, ...(includeCustom ? await findCustomClassLists(state, doc, range) : [])] } export async function findClassListsInDocument( state: State, doc: TextDocument ): Promise { if (isCssDoc(state, doc)) { return findClassListsInCssRange(doc) } let boundaries = getLanguageBoundaries(state, doc) if (!boundaries) return [] return flatten([ ...(await Promise.all( boundaries.html.map((range) => findClassListsInHtmlRange(state, doc, range)) )), ...boundaries.css.map((range) => findClassListsInCssRange(doc, range)), await findCustomClassLists(state, doc), ]) } export function findHelperFunctionsInDocument( state: State, doc: TextDocument ): DocumentHelperFunction[] { if (isCssDoc(state, doc)) { return findHelperFunctionsInRange(doc) } let boundaries = getLanguageBoundaries(state, doc) if (!boundaries) return [] return flatten(boundaries.css.map((range) => findHelperFunctionsInRange(doc, range))) } export function findHelperFunctionsInRange( doc: TextDocument, range?: Range ): DocumentHelperFunction[] { const text = doc.getText(range) const matches = findAll( /(?^|\s)(?theme|config)\((?:(?')([^']+)'|(?")([^"]+)")\)/gm, text ) return matches.map((match) => { let value = match[4] || match[6] let startIndex = match.index + match.groups.before.length return { full: match[0].substr(match.groups.before.length), value, helper: match.groups.helper === 'theme' ? 'theme' : 'config', quotes: match.groups.single ? "'" : '"', range: resolveRange( { start: indexToPosition(text, startIndex), end: indexToPosition(text, match.index + match[0].length), }, range ), valueRange: resolveRange( { start: indexToPosition(text, startIndex + match.groups.helper.length + 1), end: indexToPosition( text, startIndex + match.groups.helper.length + 1 + 1 + value.length + 1 ), }, range ), } }) } export function indexToPosition(str: string, index: number): Position { const { line, col } = lineColumn(str + '\n', index) return { line: line - 1, character: col - 1 } } export async function findClassNameAtPosition( state: State, doc: TextDocument, position: Position ): Promise { let classNames = [] const positionOffset = doc.offsetAt(position) const searchRange: Range = { start: doc.positionAt(Math.max(0, positionOffset - 500)), end: doc.positionAt(positionOffset + 500), } if (isCssContext(state, doc, position)) { classNames = await findClassNamesInRange(state, doc, searchRange, 'css') } else if (isHtmlContext(state, doc, position) || isJsContext(state, doc, position)) { classNames = await findClassNamesInRange(state, doc, searchRange, 'html') } if (classNames.length === 0) { return null } const className = classNames.find(({ range }) => isWithinRange(position, range)) if (!className) return null return className }