初始化

uni_modules/UniDevTools/node_modules/postcss-modules-extract-imports/src/index.js

@@ -0,0 +1,200 @@
+const topologicalSort = require("./topologicalSort");
+
+const matchImports = /^(.+?)\s+from\s+(?:"([^"]+)"|'([^']+)'|(global))$/;
+const icssImport = /^:import\((?:"([^"]+)"|'([^']+)')\)/;
+
+const VISITED_MARKER = 1;
+
+/**
+ * :import('G') {}
+ *
+ * Rule
+ *   composes: ... from 'A'
+ *   composes: ... from 'B'
+
+ * Rule
+ *   composes: ... from 'A'
+ *   composes: ... from 'A'
+ *   composes: ... from 'C'
+ *
+ * Results in:
+ *
+ * graph: {
+ *   G: [],
+ *   A: [],
+ *   B: ['A'],
+ *   C: ['A'],
+ * }
+ */
+function addImportToGraph(importId, parentId, graph, visited) {
+  const siblingsId = parentId + "_" + "siblings";
+  const visitedId = parentId + "_" + importId;
+
+  if (visited[visitedId] !== VISITED_MARKER) {
+    if (!Array.isArray(visited[siblingsId])) {
+      visited[siblingsId] = [];
+    }
+
+    const siblings = visited[siblingsId];
+
+    if (Array.isArray(graph[importId])) {
+      graph[importId] = graph[importId].concat(siblings);
+    } else {
+      graph[importId] = siblings.slice();
+    }
+
+    visited[visitedId] = VISITED_MARKER;
+
+    siblings.push(importId);
+  }
+}
+
+module.exports = (options = {}) => {
+  let importIndex = 0;
+  const createImportedName =
+    typeof options.createImportedName !== "function"
+      ? (importName /*, path*/) =>
+          `i__imported_${importName.replace(/\W/g, "_")}_${importIndex++}`
+      : options.createImportedName;
+  const failOnWrongOrder = options.failOnWrongOrder;
+
+  return {
+    postcssPlugin: "postcss-modules-extract-imports",
+    prepare() {
+      const graph = {};
+      const visited = {};
+      const existingImports = {};
+      const importDecls = {};
+      const imports = {};
+
+      return {
+        Once(root, postcss) {
+          // Check the existing imports order and save refs
+          root.walkRules((rule) => {
+            const matches = icssImport.exec(rule.selector);
+
+            if (matches) {
+              const [, /*match*/ doubleQuotePath, singleQuotePath] = matches;
+              const importPath = doubleQuotePath || singleQuotePath;
+
+              addImportToGraph(importPath, "root", graph, visited);
+
+              existingImports[importPath] = rule;
+            }
+          });
+
+          root.walkDecls(/^composes$/, (declaration) => {
+            const matches = declaration.value.match(matchImports);
+
+            if (!matches) {
+              return;
+            }
+
+            let tmpSymbols;
+            let [
+              ,
+              /*match*/ symbols,
+              doubleQuotePath,
+              singleQuotePath,
+              global,
+            ] = matches;
+
+            if (global) {
+              // Composing globals simply means changing these classes to wrap them in global(name)
+              tmpSymbols = symbols.split(/\s+/).map((s) => `global(${s})`);
+            } else {
+              const importPath = doubleQuotePath || singleQuotePath;
+
+              let parent = declaration.parent;
+              let parentIndexes = "";
+
+              while (parent.type !== "root") {
+                parentIndexes =
+                  parent.parent.index(parent) + "_" + parentIndexes;
+                parent = parent.parent;
+              }
+
+              const { selector } = declaration.parent;
+              const parentRule = `_${parentIndexes}${selector}`;
+
+              addImportToGraph(importPath, parentRule, graph, visited);
+
+              importDecls[importPath] = declaration;
+              imports[importPath] = imports[importPath] || {};
+
+              tmpSymbols = symbols.split(/\s+/).map((s) => {
+                if (!imports[importPath][s]) {
+                  imports[importPath][s] = createImportedName(s, importPath);
+                }
+
+                return imports[importPath][s];
+              });
+            }
+
+            declaration.value = tmpSymbols.join(" ");
+          });
+
+          const importsOrder = topologicalSort(graph, failOnWrongOrder);
+
+          if (importsOrder instanceof Error) {
+            const importPath = importsOrder.nodes.find((importPath) =>
+              // eslint-disable-next-line no-prototype-builtins
+              importDecls.hasOwnProperty(importPath)
+            );
+            const decl = importDecls[importPath];
+
+            throw decl.error(
+              "Failed to resolve order of composed modules " +
+                importsOrder.nodes
+                  .map((importPath) => "`" + importPath + "`")
+                  .join(", ") +
+                ".",
+              {
+                plugin: "postcss-modules-extract-imports",
+                word: "composes",
+              }
+            );
+          }
+
+          let lastImportRule;
+
+          importsOrder.forEach((path) => {
+            const importedSymbols = imports[path];
+            let rule = existingImports[path];
+
+            if (!rule && importedSymbols) {
+              rule = postcss.rule({
+                selector: `:import("${path}")`,
+                raws: { after: "\n" },
+              });
+
+              if (lastImportRule) {
+                root.insertAfter(lastImportRule, rule);
+              } else {
+                root.prepend(rule);
+              }
+            }
+
+            lastImportRule = rule;
+
+            if (!importedSymbols) {
+              return;
+            }
+
+            Object.keys(importedSymbols).forEach((importedSymbol) => {
+              rule.append(
+                postcss.decl({
+                  value: importedSymbol,
+                  prop: importedSymbols[importedSymbol],
+                  raws: { before: "\n  " },
+                })
+              );
+            });
+          });
+        },
+      };
+    },
+  };
+};
+
+module.exports.postcss = true;

uni_modules/UniDevTools/node_modules/postcss-modules-extract-imports/src/topologicalSort.js

@@ -0,0 +1,66 @@
+const PERMANENT_MARKER = 2;
+const TEMPORARY_MARKER = 1;
+
+function createError(node, graph) {
+  const er = new Error("Nondeterministic import's order");
+
+  const related = graph[node];
+  const relatedNode = related.find(
+    (relatedNode) => graph[relatedNode].indexOf(node) > -1
+  );
+
+  er.nodes = [node, relatedNode];
+
+  return er;
+}
+
+function walkGraph(node, graph, state, result, strict) {
+  if (state[node] === PERMANENT_MARKER) {
+    return;
+  }
+
+  if (state[node] === TEMPORARY_MARKER) {
+    if (strict) {
+      return createError(node, graph);
+    }
+
+    return;
+  }
+
+  state[node] = TEMPORARY_MARKER;
+
+  const children = graph[node];
+  const length = children.length;
+
+  for (let i = 0; i < length; ++i) {
+    const error = walkGraph(children[i], graph, state, result, strict);
+
+    if (error instanceof Error) {
+      return error;
+    }
+  }
+
+  state[node] = PERMANENT_MARKER;
+
+  result.push(node);
+}
+
+function topologicalSort(graph, strict) {
+  const result = [];
+  const state = {};
+
+  const nodes = Object.keys(graph);
+  const length = nodes.length;
+
+  for (let i = 0; i < length; ++i) {
+    const er = walkGraph(nodes[i], graph, state, result, strict);
+
+    if (er instanceof Error) {
+      return er;
+    }
+  }
+
+  return result;
+}
+
+module.exports = topologicalSort;