chore: import upstream snapshot with attribution

2026-07-13 12:25:07 +08:00
commit a26e856398
1681 changed files with 296950 additions and 0 deletions
@@ -0,0 +1,72 @@
+// ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
+// ┃ ██████ ██████ ██████       █      █      █      █      █ █▄  ▀███ █       ┃
+// ┃ ▄▄▄▄▄█ █▄▄▄▄▄ ▄▄▄▄▄█  ▀▀▀▀▀█▀▀▀▀▀ █ ▀▀▀▀▀█ ████████▌▐███ ███▄  ▀█ █ ▀▀▀▀▀ ┃
+// ┃ █▀▀▀▀▀ █▀▀▀▀▀ █▀██▀▀ ▄▄▄▄▄ █ ▄▄▄▄▄█ ▄▄▄▄▄█ ████████▌▐███ █████▄   █ ▄▄▄▄▄ ┃
+// ┃ █      ██████ █  ▀█▄       █ ██████      █      ███▌▐███ ███████▄ █       ┃
+// ┣━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┫
+// ┃ Copyright (c) 2017, the Perspective Authors.                              ┃
+// ┃ ╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌ ┃
+// ┃ This file is part of the Perspective library, distributed under the terms ┃
+// ┃ of the [Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0). ┃
+// ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
+
+import os from "os";
+import * as fs from "node:fs";
+import { mkdirSync } from "fs";
+import { execSync } from "child_process";
+import path from "path";
+import { getWorkspaceRoot, getWorkspacePackageJson } from "./workspace.mjs";
+
+const pkg = getWorkspacePackageJson();
+
+const LLVM_VERSION = pkg.llvm;
+const DOWNLOAD_DIR = path.join(getWorkspaceRoot(), ".llvm", "llvm-toolchain");
+
+function getLLVMPackageName() {
+    const system = os.platform();
+    const arch = os.arch();
+
+    if (arch === "arm64" && system === "linux") {
+        return `clang+llvm-${LLVM_VERSION}-aarch64-linux-gnu.tar.xz`;
+    } else if (arch === "x64" && system === "linux") {
+        return `clang+llvm-${LLVM_VERSION}-x86_64-linux-gnu-ubuntu-22.04.tar.xz`;
+    } else if (arch === "x64" && system === "darwin") {
+        return `clang+llvm-${LLVM_VERSION}-x86_64-apple-darwin21.0.tar.xz`;
+    } else if (arch === "arm64" && system === "darwin") {
+        return `clang+llvm-${LLVM_VERSION}-arm64-apple-darwin22.0.tar.xz`;
+    } else {
+        throw new Error(`Unsupported system: ${arch} on ${system}`);
+    }
+}
+
+async function downloadLLVM(packageName) {
+    const llvmUrl = `https://github.com/llvm/llvm-project/releases/download/llvmorg-${LLVM_VERSION}/${packageName}`;
+    const outputPath = path.join(DOWNLOAD_DIR, packageName);
+
+    console.log(`Downloading LLVM ${LLVM_VERSION} from ${llvmUrl}...`);
+
+    mkdirSync(DOWNLOAD_DIR, { recursive: true });
+    fs.writeFileSync(`${DOWNLOAD_DIR}/.llvm-version`, LLVM_VERSION);
+    execSync(`wget -O ${outputPath} ${llvmUrl}`, { stdio: "inherit" });
+    execSync(`tar -xvf ${outputPath} -C ${DOWNLOAD_DIR} --strip-components=1`, {
+        stdio: "inherit",
+    });
+    execSync(`rm ${outputPath}`, { stdio: "inherit" });
+}
+
+const llvmPackageName = getLLVMPackageName();
+
+if (fs.existsSync(DOWNLOAD_DIR)) {
+    console.log(`LLVM ${LLVM_VERSION} already downloaded`);
+    if (
+        !fs.existsSync(`${DOWNLOAD_DIR}/.llvm-version`) ||
+        fs.readFileSync(`${DOWNLOAD_DIR}/.llvm-version`).toString().trim() !==
+            LLVM_VERSION
+    ) {
+        console.log(`LLVM version mismatch, re-downloading...`);
+        fs.rmdirSync(DOWNLOAD_DIR, { recursive: true });
+        downloadLLVM(llvmPackageName);
+    }
+} else {
+    downloadLLVM(llvmPackageName);
+}