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backend/node_modules/hono/dist/router/reg-exp-router/node.js

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+// src/router/reg-exp-router/node.ts
+var LABEL_REG_EXP_STR = "[^/]+";
+var ONLY_WILDCARD_REG_EXP_STR = ".*";
+var TAIL_WILDCARD_REG_EXP_STR = "(?:|/.*)";
+var PATH_ERROR = /* @__PURE__ */ Symbol();
+var regExpMetaChars = new Set(".\\+*[^]$()");
+function compareKey(a, b) {
+  if (a.length === 1) {
+    return b.length === 1 ? a < b ? -1 : 1 : -1;
+  }
+  if (b.length === 1) {
+    return 1;
+  }
+  if (a === ONLY_WILDCARD_REG_EXP_STR || a === TAIL_WILDCARD_REG_EXP_STR) {
+    return 1;
+  } else if (b === ONLY_WILDCARD_REG_EXP_STR || b === TAIL_WILDCARD_REG_EXP_STR) {
+    return -1;
+  }
+  if (a === LABEL_REG_EXP_STR) {
+    return 1;
+  } else if (b === LABEL_REG_EXP_STR) {
+    return -1;
+  }
+  return a.length === b.length ? a < b ? -1 : 1 : b.length - a.length;
+}
+var Node = class _Node {
+  #index;
+  #varIndex;
+  #children = /* @__PURE__ */ Object.create(null);
+  insert(tokens, index, paramMap, context, pathErrorCheckOnly) {
+    if (tokens.length === 0) {
+      if (this.#index !== void 0) {
+        throw PATH_ERROR;
+      }
+      if (pathErrorCheckOnly) {
+        return;
+      }
+      this.#index = index;
+      return;
+    }
+    const [token, ...restTokens] = tokens;
+    const pattern = token === "*" ? restTokens.length === 0 ? ["", "", ONLY_WILDCARD_REG_EXP_STR] : ["", "", LABEL_REG_EXP_STR] : token === "/*" ? ["", "", TAIL_WILDCARD_REG_EXP_STR] : token.match(/^\:([^\{\}]+)(?:\{(.+)\})?$/);
+    let node;
+    if (pattern) {
+      const name = pattern[1];
+      let regexpStr = pattern[2] || LABEL_REG_EXP_STR;
+      if (name && pattern[2]) {
+        if (regexpStr === ".*") {
+          throw PATH_ERROR;
+        }
+        regexpStr = regexpStr.replace(/^\((?!\?:)(?=[^)]+\)$)/, "(?:");
+        if (/\((?!\?:)/.test(regexpStr)) {
+          throw PATH_ERROR;
+        }
+      }
+      node = this.#children[regexpStr];
+      if (!node) {
+        if (Object.keys(this.#children).some(
+          (k) => k !== ONLY_WILDCARD_REG_EXP_STR && k !== TAIL_WILDCARD_REG_EXP_STR
+        )) {
+          throw PATH_ERROR;
+        }
+        if (pathErrorCheckOnly) {
+          return;
+        }
+        node = this.#children[regexpStr] = new _Node();
+        if (name !== "") {
+          node.#varIndex = context.varIndex++;
+        }
+      }
+      if (!pathErrorCheckOnly && name !== "") {
+        paramMap.push([name, node.#varIndex]);
+      }
+    } else {
+      node = this.#children[token];
+      if (!node) {
+        if (Object.keys(this.#children).some(
+          (k) => k.length > 1 && k !== ONLY_WILDCARD_REG_EXP_STR && k !== TAIL_WILDCARD_REG_EXP_STR
+        )) {
+          throw PATH_ERROR;
+        }
+        if (pathErrorCheckOnly) {
+          return;
+        }
+        node = this.#children[token] = new _Node();
+      }
+    }
+    node.insert(restTokens, index, paramMap, context, pathErrorCheckOnly);
+  }
+  buildRegExpStr() {
+    const childKeys = Object.keys(this.#children).sort(compareKey);
+    const strList = childKeys.map((k) => {
+      const c = this.#children[k];
+      return (typeof c.#varIndex === "number" ? `(${k})@${c.#varIndex}` : regExpMetaChars.has(k) ? `\\${k}` : k) + c.buildRegExpStr();
+    });
+    if (typeof this.#index === "number") {
+      strList.unshift(`#${this.#index}`);
+    }
+    if (strList.length === 0) {
+      return "";
+    }
+    if (strList.length === 1) {
+      return strList[0];
+    }
+    return "(?:" + strList.join("|") + ")";
+  }
+};
+export {
+  Node,
+  PATH_ERROR
+};