1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142

import { State, DocumentClassName } from '../util/state'
import { Hover, TextDocumentPositionParams } from 'vscode-languageserver'
import {
  getClassNameAtPosition,
  getClassNameParts,
} from '../util/getClassNameAtPosition'
import { stringifyCss, stringifyConfigValue } from '../util/stringify'
const dlv = require('dlv')
import { isHtmlContext } from '../util/html'
import { isCssContext } from '../util/css'
import { isJsContext } from '../util/js'
import { isWithinRange } from '../util/isWithinRange'
import { findClassNamesInRange } from '../util/find'

export function provideHover(
  state: State,
  params: TextDocumentPositionParams
): Hover {
  return (
    provideClassNameHover(state, params) || provideCssHelperHover(state, params)
  )
}

function provideCssHelperHover(
  state: State,
  { textDocument, position }: TextDocumentPositionParams
): Hover {
  let doc = state.editor.documents.get(textDocument.uri)

  if (!isCssContext(state, doc, position)) return null

  const line = doc.getText({
    start: { line: position.line, character: 0 },
    end: { line: position.line + 1, character: 0 },
  })

  const match = line.match(
    /(?<helper>theme|config)\((?<quote>['"])(?<key>[^)]+)\k<quote>\)/
  )

  if (match === null) return null

  const startChar = match.index + match.groups.helper.length + 2
  const endChar = startChar + match.groups.key.length

  if (position.character < startChar || position.character >= endChar) {
    return null
  }

  let key = match.groups.key
    .split(/(\[[^\]]+\]|\.)/)
    .filter(Boolean)
    .filter((x) => x !== '.')
    .map((x) => x.replace(/^\[([^\]]+)\]$/, '$1'))

  if (key.length === 0) return null

  if (match.groups.helper === 'theme') {
    key = ['theme', ...key]
  }

  const value = stringifyConfigValue(dlv(state.config, key))

  if (value === null) return null

  return {
    contents: { kind: 'plaintext', value },
    range: {
      start: { line: position.line, character: startChar },
      end: {
        line: position.line,
        character: endChar,
      },
    },
  }
}

function provideClassAttributeHover(
  state: State,
  { textDocument, position }: TextDocumentPositionParams
): Hover {
  let doc = state.editor.documents.get(textDocument.uri)

  if (
    !isHtmlContext(state, doc, position) &&
    !isJsContext(state, doc, position)
  )
    return null

  let hovered = getClassNameAtPosition(doc, position)
  if (!hovered) return null

  return classNameToHover(state, hovered)
}

function classNameToHover(
  state: State,
  { className, range }: DocumentClassName
): Hover {
  const parts = getClassNameParts(state, className)
  if (!parts) return null

  return {
    contents: {
      language: 'css',
      value: stringifyCss(className, dlv(state.classNames.classNames, parts)),
    },
    range,
  }
}

function provideAtApplyHover(
  state: State,
  { textDocument, position }: TextDocumentPositionParams
): Hover {
  let doc = state.editor.documents.get(textDocument.uri)

  if (!isCssContext(state, doc, position)) return null

  const classNames = findClassNamesInRange(doc, {
    start: { line: Math.max(position.line - 10, 0), character: 0 },
    end: { line: position.line + 10, character: 0 },
  })

  const className = classNames.find(({ range }) =>
    isWithinRange(position, range)
  )

  if (!className) return null

  return classNameToHover(state, className)
}

function provideClassNameHover(
  state: State,
  params: TextDocumentPositionParams
): Hover {
  return (
    provideClassAttributeHover(state, params) ||
    provideAtApplyHover(state, params)
  )
}