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import {
TextDocument,
Diagnostic,
DiagnosticSeverity,
Range,
} from 'vscode-languageserver'
import { State, Settings } from '../util/state'
import { isCssDoc } from '../util/css'
import {
findClassNamesInRange,
findClassListsInDocument,
getClassNamesInClassList,
findAll,
indexToPosition,
} from '../util/find'
import { getClassNameMeta } from '../util/getClassNameMeta'
import { getClassNameDecls } from '../util/getClassNameDecls'
import { equal, flatten } from '../../util/array'
import { getDocumentSettings } from '../util/getDocumentSettings'
const dlv = require('dlv')
import semver from 'semver'
import { getLanguageBoundaries } from '../util/getLanguageBoundaries'
import { absoluteRange } from '../util/absoluteRange'
function getUnsupportedApplyDiagnostics(
state: State,
document: TextDocument,
settings: Settings
): Diagnostic[] {
let severity = settings.lint.unsupportedApply
if (severity === 'ignore') return []
const classNames = findClassNamesInRange(document, undefined, 'css')
let diagnostics: Diagnostic[] = classNames
.map(({ className, range }) => {
const meta = getClassNameMeta(state, className)
if (!meta) return null
let message: string
if (Array.isArray(meta)) {
message = `\`@apply\` cannot be used with \`.${className}\` because it is included in multiple rulesets.`
} else if (meta.source !== 'utilities') {
message = `\`@apply\` cannot be used with \`.${className}\` because it is not a utility.`
} else if (meta.context && meta.context.length > 0) {
if (meta.context.length === 1) {
message = `\`@apply\` cannot be used with \`.${className}\` because it is nested inside of an at-rule (${meta.context[0]}).`
} else {
message = `\`@apply\` cannot be used with \`.${className}\` because it is nested inside of at-rules (${meta.context.join(
', '
)}).`
}
} else if (meta.pseudo && meta.pseudo.length > 0) {
if (meta.pseudo.length === 1) {
message = `\`@apply\` cannot be used with \`.${className}\` because its definition includes a pseudo-selector (${meta.pseudo[0]})`
} else {
message = `\`@apply\` cannot be used with \`.${className}\` because its definition includes pseudo-selectors (${meta.pseudo.join(
', '
)})`
}
}
if (!message) return null
return {
severity:
severity === 'error'
? DiagnosticSeverity.Error
: DiagnosticSeverity.Warning,
range,
message,
}
})
.filter(Boolean)
return diagnostics
}
function getUtilityConflictDiagnostics(
state: State,
document: TextDocument,
settings: Settings
): Diagnostic[] {
let severity = settings.lint.utilityConflicts
if (severity === 'ignore') return []
let diagnostics: Diagnostic[] = []
const classLists = findClassListsInDocument(state, document)
classLists.forEach((classList) => {
const classNames = getClassNamesInClassList(classList)
classNames.forEach((className, index) => {
let otherClassNames = classNames.filter((_className, i) => i !== index)
otherClassNames.forEach((otherClassName) => {
let decls = getClassNameDecls(state, className.className)
if (!decls) return
let otherDecls = getClassNameDecls(state, otherClassName.className)
if (!otherDecls) return
let meta = getClassNameMeta(state, className.className)
let otherMeta = getClassNameMeta(state, otherClassName.className)
if (
equal(Object.keys(decls), Object.keys(otherDecls)) &&
!Array.isArray(meta) &&
!Array.isArray(otherMeta) &&
equal(meta.context, otherMeta.context) &&
equal(meta.pseudo, otherMeta.pseudo)
) {
diagnostics.push({
range: className.range,
severity:
severity === 'error'
? DiagnosticSeverity.Error
: DiagnosticSeverity.Warning,
message: `You can’t use \`${className.className}\` and \`${otherClassName.className}\` together`,
relatedInformation: [
{
message: otherClassName.className,
location: {
uri: document.uri,
range: otherClassName.range,
},
},
],
})
}
})
})
})
return diagnostics
}
function getUnknownScreenDiagnostics(
state: State,
document: TextDocument,
settings: Settings
): Diagnostic[] {
let severity = settings.lint.unknownScreen
if (severity === 'ignore') return []
let diagnostics: Diagnostic[] = []
let ranges: Range[] = []
if (isCssDoc(state, document)) {
ranges.push(undefined)
} else {
let boundaries = getLanguageBoundaries(state, document)
if (!boundaries) return []
ranges.push(...boundaries.css)
}
ranges.forEach((range) => {
let text = document.getText(range)
let matches = findAll(/(?:\s|^)@screen\s+(?<screen>[^\s{]+)/g, text)
let screens = Object.keys(
dlv(state.config, 'theme.screens', dlv(state.config, 'screens', {}))
)
matches.forEach((match) => {
if (screens.includes(match.groups.screen)) {
return null
}
diagnostics.push({
range: absoluteRange(
{
start: indexToPosition(
text,
match.index + match[0].length - match.groups.screen.length
),
end: indexToPosition(text, match.index + match[0].length),
},
range
),
severity:
severity === 'error'
? DiagnosticSeverity.Error
: DiagnosticSeverity.Warning,
message: 'Unknown screen',
})
})
})
return diagnostics
}
function getUnknownVariantDiagnostics(
state: State,
document: TextDocument,
settings: Settings
): Diagnostic[] {
let severity = settings.lint.unknownVariant
if (severity === 'ignore') return []
let diagnostics: Diagnostic[] = []
let ranges: Range[] = []
if (isCssDoc(state, document)) {
ranges.push(undefined)
} else {
let boundaries = getLanguageBoundaries(state, document)
if (!boundaries) return []
ranges.push(...boundaries.css)
}
ranges.forEach((range) => {
let text = document.getText(range)
let matches = findAll(/(?:\s|^)@variants\s+(?<variants>[^{]+)/g, text)
matches.forEach((match) => {
let variants = match.groups.variants.split(/(\s*,\s*)/)
let listStartIndex =
match.index + match[0].length - match.groups.variants.length
for (let i = 0; i < variants.length; i += 2) {
let variant = variants[i].trim()
if (state.variants.includes(variant)) {
continue
}
let variantStartIndex =
listStartIndex + variants.slice(0, i).join('').length
diagnostics.push({
range: absoluteRange(
{
start: indexToPosition(text, variantStartIndex),
end: indexToPosition(text, variantStartIndex + variant.length),
},
range
),
severity:
severity === 'error'
? DiagnosticSeverity.Error
: DiagnosticSeverity.Warning,
message: `Unknown variant: ${variant}`,
})
}
})
})
return diagnostics
}
function getUnknownConfigKeyDiagnostics(
state: State,
document: TextDocument,
settings: Settings
): Diagnostic[] {
let severity = settings.lint.unknownConfigKey
if (severity === 'ignore') return []
let diagnostics: Diagnostic[] = []
let ranges: Range[] = []
if (isCssDoc(state, document)) {
ranges.push(undefined)
} else {
let boundaries = getLanguageBoundaries(state, document)
if (!boundaries) return []
ranges.push(...boundaries.css)
}
ranges.forEach((range) => {
let text = document.getText(range)
let matches = findAll(
/(?<prefix>\s|^)(?<helper>config|theme)\((?<quote>['"])(?<key>[^)]+)\k<quote>\)/g,
text
)
matches.forEach((match) => {
let base = match.groups.helper === 'theme' ? ['theme'] : []
let keys = match.groups.key.split(/[.\[\]]/).filter(Boolean)
let value = dlv(state.config, [...base, ...keys])
// TODO: check that the type is valid
// e.g. objects are not valid
if (typeof value !== 'undefined') {
return null
}
let startIndex =
match.index +
match.groups.prefix.length +
match.groups.helper.length +
1 + // open paren
match.groups.quote.length
diagnostics.push({
range: absoluteRange(
{
start: indexToPosition(text, startIndex),
end: indexToPosition(text, startIndex + match.groups.key.length),
},
range
),
severity:
severity === 'error'
? DiagnosticSeverity.Error
: DiagnosticSeverity.Warning,
message: `Unknown ${match.groups.helper} key: ${match.groups.key}`,
})
})
})
return diagnostics
}
function getUnsupportedTailwindDirectiveDiagnostics(
state: State,
document: TextDocument,
settings: Settings
): Diagnostic[] {
let severity = settings.lint.unsupportedTailwindDirective
if (severity === 'ignore') return []
let diagnostics: Diagnostic[] = []
let ranges: Range[] = []
if (isCssDoc(state, document)) {
ranges.push(undefined)
} else {
let boundaries = getLanguageBoundaries(state, document)
if (!boundaries) return []
ranges.push(...boundaries.css)
}
ranges.forEach((range) => {
let text = document.getText(range)
let matches = findAll(/(?:\s|^)@tailwind\s+(?<value>[^;]+)/g, text)
let valid = [
'utilities',
'components',
'screens',
semver.gte(state.version, '1.0.0-beta.1') ? 'base' : 'preflight',
]
matches.forEach((match) => {
if (valid.includes(match.groups.value)) {
return null
}
diagnostics.push({
range: absoluteRange(
{
start: indexToPosition(
text,
match.index + match[0].length - match.groups.value.length
),
end: indexToPosition(text, match.index + match[0].length),
},
range
),
severity:
severity === 'error'
? DiagnosticSeverity.Error
: DiagnosticSeverity.Warning,
message: `Unsupported value: ${match.groups.value}${
match.groups.value === 'preflight' ? '. Use base instead.' : ''
}`,
})
})
})
return diagnostics
}
export async function provideDiagnostics(
state: State,
document: TextDocument
): Promise<void> {
const settings = await getDocumentSettings(state, document.uri)
const diagnostics: Diagnostic[] = settings.validate
? [
...getUtilityConflictDiagnostics(state, document, settings),
...getUnsupportedApplyDiagnostics(state, document, settings),
...getUnknownScreenDiagnostics(state, document, settings),
...getUnknownVariantDiagnostics(state, document, settings),
...getUnknownConfigKeyDiagnostics(state, document, settings),
...getUnsupportedTailwindDirectiveDiagnostics(
state,
document,
settings
),
]
: []
state.editor.connection.sendDiagnostics({
uri: document.uri,
diagnostics,
})
}
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