Fix parsing of theme() inside calc() when there are no spaces around operators (#11157)

* Refactor

* Don’t resolve functions for anything not using theme or screen

* Normalize math operators inside calc when handling functions

* Inline postcss-value-parser

* Treat all functions the same as calc

* Remove workaround for calc + operators without spaces

* Remove `postcss-value-parser` dependency

* Update lockfile

* Update sourcemaps

* Update changelog

* Update `value-parser` formatting

* Stop prettier from complaining

Author: thecrypticace

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Fix issue where some pseudo-element variants generated the wrong selector ([#10943](https://github.com/tailwindlabs/tailwindcss/pull/10943), [#10962](https://github.com/tailwindlabs/tailwindcss/pull/10962))
 - Make font settings propagate into buttons, inputs, etc. ([#10940](https://github.com/tailwindlabs/tailwindcss/pull/10940))
+- Fix parsing of `theme()` inside `calc()` when there are no spaces around operators ([#11157](https://github.com/tailwindlabs/tailwindcss/pull/11157))
 
 ### Added
 

package-lock.json

@@ -29,7 +29,6 @@
         "postcss-load-config": "^4.0.1",
         "postcss-nested": "^6.0.1",
         "postcss-selector-parser": "^6.0.11",
-        "postcss-value-parser": "^4.2.0",
         "resolve": "^1.22.2",
         "sucrase": "^3.32.0"
       },

package-lock.stable.json

@@ -90,7 +90,6 @@
     "postcss-load-config": "^4.0.1",
     "postcss-nested": "^6.0.1",
     "postcss-selector-parser": "^6.0.11",
-    "postcss-value-parser": "^4.2.0",
     "resolve": "^1.22.2",
     "sucrase": "^3.32.0"
   },

package.json

@@ -87,7 +87,6 @@
     "postcss-load-config": "^4.0.1",
     "postcss-nested": "^6.0.1",
     "postcss-selector-parser": "^6.0.11",
-    "postcss-value-parser": "^4.2.0",
     "resolve": "^1.22.2",
     "sucrase": "^3.32.0"
   },

package.stable.json

@@ -1,7 +1,7 @@
 import dlv from 'dlv'
 import didYouMean from 'didyoumean'
 import transformThemeValue from '../util/transformThemeValue'
-import parseValue from 'postcss-value-parser'
+import parseValue from '../value-parser/index'
 import { normalizeScreens } from '../util/normalizeScreens'
 import buildMediaQuery from '../util/buildMediaQuery'
 import { toPath } from '../util/toPath'
@@ -146,6 +146,9 @@ function resolveVNode(node, vNode, functions) {
 }
 
 function resolveFunctions(node, input, functions) {
+  let hasAnyFn = Object.keys(functions).some((fn) => input.includes(`${fn}(`))
+  if (!hasAnyFn) return input
+
   return parseValue(input)
     .walk((vNode) => {
       resolveVNode(node, vNode, functions)

src/lib/evaluateTailwindFunctions.js

@@ -49,10 +49,22 @@ export function normalize(value, isRoot = true) {
     value = value.trim()
   }
 
-  // Add spaces around operators inside math functions like calc() that do not follow an operator
-  // or '('.
-  value = value.replace(/(calc|min|max|clamp)\(.+\)/g, (match) => {
+  value = normalizeMathOperatorSpacing(value)
+
+  return value
+}
+
+/**
+ * Add spaces around operators inside math functions
+ * like calc() that do not follow an operator or '('.
+ *
+ * @param {string} value
+ * @returns {string}
+ */
+function normalizeMathOperatorSpacing(value) {
+  return value.replace(/(calc|min|max|clamp)\(.+\)/g, (match) => {
     let vars = []
+
     return match
       .replace(/var\((--.+?)[,)]/g, (match, g1) => {
         vars.push(g1)
@@ -61,8 +73,6 @@ export function normalize(value, isRoot = true) {
       .replace(/(-?\d*\.?\d(?!\b-\d.+[,)](?![^+\-/*])\D)(?:%|[a-z]+)?|\))([+\-/*])/g, '$1 $2 ')
       .replace(placeholderRe, () => vars.shift())
   })
-
-  return value
 }
 
 export function url(value) {

src/util/dataTypes.js

@@ -0,0 +1,22 @@
+Copyright (c) Bogdan Chadkin <trysound@yandex.ru>
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.

src/value-parser/LICENSE

@@ -0,0 +1,3 @@
+# postcss-value-parser (forked + inlined)
+
+This is a customized version of of [PostCSS Value Parser](https://github.com/TrySound/postcss-value-parser) to fix some bugs around parsing CSS functions.

src/value-parser/README.md

@@ -0,0 +1,177 @@
+declare namespace postcssValueParser {
+  interface BaseNode {
+    /**
+     * The offset, inclusive, inside the CSS value at which the node starts.
+     */
+    sourceIndex: number
+
+    /**
+     * The offset, exclusive, inside the CSS value at which the node ends.
+     */
+    sourceEndIndex: number
+
+    /**
+     * The node's characteristic value
+     */
+    value: string
+  }
+
+  interface ClosableNode {
+    /**
+     * Whether the parsed CSS value ended before the node was properly closed
+     */
+    unclosed?: true
+  }
+
+  interface AdjacentAwareNode {
+    /**
+     * The token at the start of the node
+     */
+    before: string
+
+    /**
+     * The token at the end of the node
+     */
+    after: string
+  }
+
+  interface CommentNode extends BaseNode, ClosableNode {
+    type: 'comment'
+  }
+
+  interface DivNode extends BaseNode, AdjacentAwareNode {
+    type: 'div'
+  }
+
+  interface FunctionNode extends BaseNode, ClosableNode, AdjacentAwareNode {
+    type: 'function'
+
+    /**
+     * Nodes inside the function
+     */
+    nodes: Node[]
+  }
+
+  interface SpaceNode extends BaseNode {
+    type: 'space'
+  }
+
+  interface StringNode extends BaseNode, ClosableNode {
+    type: 'string'
+
+    /**
+     * The quote type delimiting the string
+     */
+    quote: '"' | "'"
+  }
+
+  interface UnicodeRangeNode extends BaseNode {
+    type: 'unicode-range'
+  }
+
+  interface WordNode extends BaseNode {
+    type: 'word'
+  }
+
+  /**
+   * Any node parsed from a CSS value
+   */
+  type Node =
+    | CommentNode
+    | DivNode
+    | FunctionNode
+    | SpaceNode
+    | StringNode
+    | UnicodeRangeNode
+    | WordNode
+
+  interface CustomStringifierCallback {
+    /**
+     * @param node The node to stringify
+     * @returns The serialized CSS representation of the node
+     */
+    (nodes: Node): string | undefined
+  }
+
+  interface WalkCallback {
+    /**
+     * @param node  The currently visited node
+     * @param index The index of the node in the series of parsed nodes
+     * @param nodes The series of parsed nodes
+     * @returns Returning `false` will prevent traversal of descendant nodes (only applies if `bubble` was set to `true` in the `walk()` call)
+     */
+    (node: Node, index: number, nodes: Node[]): void | boolean
+  }
+
+  /**
+   * A CSS dimension, decomposed into its numeric and unit parts
+   */
+  interface Dimension {
+    number: string
+    unit: string
+  }
+
+  /**
+   * A wrapper around a parsed CSS value that allows for inspecting and walking nodes
+   */
+  interface ParsedValue {
+    /**
+     * The series of parsed nodes
+     */
+    nodes: Node[]
+
+    /**
+     * Walk all parsed nodes, applying a callback
+     *
+     * @param callback A visitor callback that will be executed for each node
+     * @param bubble   When set to `true`, walking will be done inside-out instead of outside-in
+     */
+    walk(callback: WalkCallback, bubble?: boolean): this
+  }
+
+  interface ValueParser {
+    /**
+     * Decompose a CSS dimension into its numeric and unit part
+     *
+     * @param value The dimension to decompose
+     * @returns An object representing `number` and `unit` part of the dimension or `false` if the decomposing fails
+     */
+    unit(value: string): Dimension | false
+
+    /**
+     * Serialize a series of nodes into a CSS value
+     *
+     * @param nodes  The nodes to stringify
+     * @param custom A custom stringifier callback
+     * @returns The generated CSS value
+     */
+    stringify(nodes: Node | Node[], custom?: CustomStringifierCallback): string
+
+    /**
+     * Walk a series of nodes, applying a callback
+     *
+     * @param nodes    The nodes to walk
+     * @param callback A visitor callback that will be executed for each node
+     * @param bubble   When set to `true`, walking will be done inside-out instead of outside-in
+     */
+    walk(nodes: Node[], callback: WalkCallback, bubble?: boolean): void
+
+    /**
+     * Parse a CSS value into a series of nodes to operate on
+     *
+     * @param value The value to parse
+     */
+    new (value: string): ParsedValue
+
+    /**
+     * Parse a CSS value into a series of nodes to operate on
+     *
+     * @param value The value to parse
+     */
+    (value: string): ParsedValue
+  }
+}
+
+declare const postcssValueParser: postcssValueParser.ValueParser
+
+export = postcssValueParser

src/value-parser/index.d.ts

@@ -0,0 +1,28 @@
+var parse = require('./parse')
+var walk = require('./walk')
+var stringify = require('./stringify')
+
+function ValueParser(value) {
+  if (this instanceof ValueParser) {
+    this.nodes = parse(value)
+    return this
+  }
+  return new ValueParser(value)
+}
+
+ValueParser.prototype.toString = function () {
+  return Array.isArray(this.nodes) ? stringify(this.nodes) : ''
+}
+
+ValueParser.prototype.walk = function (cb, bubble) {
+  walk(this.nodes, cb, bubble)
+  return this
+}
+
+ValueParser.unit = require('./unit')
+
+ValueParser.walk = walk
+
+ValueParser.stringify = stringify
+
+module.exports = ValueParser