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import { joinWithAnd } from '../util/joinWithAnd'
import { State, Settings } from '../util/state'
import { CssConflictDiagnostic, DiagnosticKind } from './types'
import { findClassListsInDocument, getClassNamesInClassList } from '../util/find'
import { getClassNameDecls } from '../util/getClassNameDecls'
import { getClassNameMeta } from '../util/getClassNameMeta'
import { equal } from '../util/array'
import * as jit from '../util/jit'
import type { AtRule, Node, Rule } from 'postcss'
import type { TextDocument } from 'vscode-languageserver-textdocument'
function isCustomProperty(property: string): boolean {
return property.startsWith('--')
}
function isAtRule(node: Node): node is AtRule {
return node.type === 'atrule'
}
function isKeyframes(rule: Rule): boolean {
let parent = rule.parent
if (!parent) {
return false
}
if (isAtRule(parent) && parent.name === 'keyframes') {
return true
}
return false
}
function getRuleProperties(rule: Rule): string[] {
let properties: string[] = []
rule.walkDecls(({ prop }) => {
properties.push(prop)
})
// if (properties.findIndex((p) => !isCustomProperty(p)) > -1) {
// properties = properties.filter((p) => !isCustomProperty(p))
// }
return properties
}
export async function getCssConflictDiagnostics(
state: State,
document: TextDocument,
settings: Settings
): Promise<CssConflictDiagnostic[]> {
let severity = settings.tailwindCSS.lint.cssConflict
if (severity === 'ignore') return []
let diagnostics: CssConflictDiagnostic[] = []
const classLists = await findClassListsInDocument(state, document)
classLists.forEach((classList) => {
const classNames = getClassNamesInClassList(classList, state.blocklist)
classNames.forEach((className, index) => {
if (state.jit) {
let { rules } = jit.generateRules(
state,
[className.className],
(rule) => !isKeyframes(rule)
)
if (rules.length === 0) {
return
}
let info: Array<{ context: string[]; properties: string[] }> = rules.map((rule) => {
let properties = getRuleProperties(rule)
let context = jit.getRuleContext(state, rule, className.className)
return { context, properties }
})
let otherClassNames = classNames.filter((_className, i) => i !== index)
let conflictingClassNames = otherClassNames.filter((otherClassName) => {
let { rules: otherRules } = jit.generateRules(
state,
[otherClassName.className],
(rule) => !isKeyframes(rule)
)
if (otherRules.length !== rules.length) {
return false
}
let propertiesAreComparable = false
for (let i = 0; i < otherRules.length; i++) {
let otherRule = otherRules[i]
let properties = getRuleProperties(otherRule)
if (info[i].properties.length > 0 && properties.length > 0) {
propertiesAreComparable = true
}
if (!equal(info[i].properties, properties)) {
return false
}
let context = jit.getRuleContext(state, otherRule, otherClassName.className)
if (!equal(info[i].context, context)) {
return false
}
}
if (!propertiesAreComparable) {
return false
}
return true
})
if (conflictingClassNames.length === 0) return
diagnostics.push({
code: DiagnosticKind.CssConflict,
className,
otherClassNames: conflictingClassNames,
range: className.range,
severity:
severity === 'error'
? 1 /* DiagnosticSeverity.Error */
: 2 /* DiagnosticSeverity.Warning */,
message: `'${className.className}' applies the same CSS properties as ${joinWithAnd(
conflictingClassNames.map(
(conflictingClassName) => `'${conflictingClassName.className}'`
)
)}.`,
relatedInformation: conflictingClassNames.map((conflictingClassName) => {
return {
message: conflictingClassName.className,
location: {
uri: document.uri,
range: conflictingClassName.range,
},
}
}),
})
return
}
let decls = getClassNameDecls(state, className.className)
if (!decls) return
let properties = Object.keys(decls)
let meta = getClassNameMeta(state, className.className)
let otherClassNames = classNames.filter((_className, i) => i !== index)
let conflictingClassNames = otherClassNames.filter((otherClassName) => {
let otherDecls = getClassNameDecls(state, otherClassName.className)
if (!otherDecls) return false
let otherMeta = getClassNameMeta(state, otherClassName.className)
return (
equal(properties, Object.keys(otherDecls)) &&
!Array.isArray(meta) &&
!Array.isArray(otherMeta) &&
equal(meta.context, otherMeta.context) &&
equal(meta.pseudo, otherMeta.pseudo) &&
meta.scope === otherMeta.scope
)
})
if (conflictingClassNames.length === 0) return
diagnostics.push({
code: DiagnosticKind.CssConflict,
className,
otherClassNames: conflictingClassNames,
range: className.range,
severity:
severity === 'error'
? 1 /* DiagnosticSeverity.Error */
: 2 /* DiagnosticSeverity.Warning */,
message: `'${className.className}' applies the same CSS ${
properties.length === 1 ? 'property' : 'properties'
} as ${joinWithAnd(
conflictingClassNames.map((conflictingClassName) => `'${conflictingClassName.className}'`)
)}.`,
relatedInformation: conflictingClassNames.map((conflictingClassName) => {
return {
message: conflictingClassName.className,
location: {
uri: document.uri,
range: conflictingClassName.range,
},
}
}),
})
})
})
return diagnostics
}
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