f1e0b83e7bPR-URL: https://github.com/nodejs/node/pull/61898 Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Filip Skokan <panva.ip@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
87 lines
2.2 KiB
JavaScript
87 lines
2.2 KiB
JavaScript
// Copyright 2025 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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//
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// Flags: --allow-natives-syntax
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function testSimpleRoundtrip() {
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function simple(a, b) {
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let c = a + b;
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return c * 2;
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}
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// Ensure simple is compiled and has bytecode
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simple(1, 2);
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const bytecodeObj = %GetBytecode(simple);
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assertEquals("object", typeof bytecodeObj);
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assertTrue(bytecodeObj.bytecode instanceof ArrayBuffer);
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assertTrue(bytecodeObj.constant_pool instanceof Array);
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assertTrue(bytecodeObj.handler_table instanceof ArrayBuffer);
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assertEquals("number", typeof bytecodeObj.frame_size);
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assertEquals("number", typeof bytecodeObj.parameter_count);
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assertEquals("number", typeof bytecodeObj.max_arguments);
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assertEquals("number", typeof bytecodeObj.incoming_new_target_or_generator_register);
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// simple(a, b) has 2 parameters + receiver = 3
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assertEquals(3, bytecodeObj.parameter_count);
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%InstallBytecode(simple, bytecodeObj);
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assertEquals(6, simple(1, 2));
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assertEquals(10, simple(2, 3));
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}
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function testSimpleTransplant() {
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function ret42() { return 42; }
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function ret43() { return 43; }
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ret42();
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ret43();
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const bytecodeObjRet42 = %GetBytecode(ret42);
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const bytecodeObjRet43 = %GetBytecode(ret43);
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%InstallBytecode(ret43, bytecodeObjRet42);
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assertEquals(42, ret43());
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}
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function testExceptionHandlers() {
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function withTryCatch() {
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try {
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throw new Error("catch me");
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} catch(e) {
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return "caught";
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}
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}
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withTryCatch();
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const bc = %GetBytecode(withTryCatch);
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assertTrue(bc.handler_table.byteLength > 0);
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%InstallBytecode(withTryCatch, bc);
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assertEquals("caught", withTryCatch());
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}
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function testConstants() {
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function withConstants() {
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return "Hello World!";
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}
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withConstants();
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const bc = %GetBytecode(withConstants);
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assertTrue(bc.constant_pool.length > 0);
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assertTrue(bc.constant_pool.includes("Hello World!"));
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%InstallBytecode(testConstants, bc);
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assertEquals("Hello World!", testConstants());
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}
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testSimpleRoundtrip();
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testSimpleTransplant();
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testExceptionHandlers();
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testConstants();
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