first commit

app_vue/node_modules/eslint-plugin-vue/lib/utils/style-variables/index.js

@@ -0,0 +1,62 @@
+const { isVElement } = require('..')
+
+class StyleVariablesContext {
+  /**
+   * @param {RuleContext} context
+   * @param {VElement[]} styles
+   */
+  constructor(context, styles) {
+    this.context = context
+    this.styles = styles
+    /** @type {VReference[]} */
+    this.references = []
+    /** @type {VExpressionContainer[]} */
+    this.vBinds = []
+    for (const style of styles) {
+      for (const node of style.children) {
+        if (node.type === 'VExpressionContainer') {
+          this.vBinds.push(node)
+          for (const ref of node.references.filter(
+            (ref) => ref.variable == null
+          )) {
+            this.references.push(ref)
+          }
+        }
+      }
+    }
+  }
+}
+
+module.exports = {
+  getStyleVariablesContext,
+  StyleVariablesContext
+}
+
+/** @type {WeakMap<VElement, StyleVariablesContext>} */
+const cache = new WeakMap()
+/**
+ * Get the style vars context
+ * @param {RuleContext} context
+ * @returns {StyleVariablesContext | null}
+ */
+function getStyleVariablesContext(context) {
+  const df =
+    context.parserServices.getDocumentFragment &&
+    context.parserServices.getDocumentFragment()
+  if (!df) {
+    return null
+  }
+  const styles = df.children
+    .filter(isVElement)
+    .filter((e) => e.name === 'style')
+  if (!styles.length) {
+    return null
+  }
+  let ctx = cache.get(styles[0])
+  if (ctx) {
+    return ctx
+  }
+  ctx = new StyleVariablesContext(context, styles)
+  cache.set(styles[0], ctx)
+  return ctx
+}