108 lines
4.1 KiB
C#
108 lines
4.1 KiB
C#
using System;
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using System.Diagnostics;
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using System.IO;
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using System.Text;
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using System.Text.Encodings.Web;
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using System.Text.Json;
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using System.Text.Json.Nodes;
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namespace Sim.Runner;
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/// <summary>
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/// 常驻编译服务：从标准输入读取 {"id":…,"dir":…}，编译该目录下的学生工程，
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/// 成功时把 StudentApp.dll / StudentApp.pdb 写到同一目录，回复 {"id":…,"type":"compiled",…}。
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/// 请求带 "export":{"libs":…,"name":…} 时导出 EXE（见 ExeExporter），写到同一目录的 export.exe。
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/// 编译器常驻，第一次之后的编译不再有加载和预热开销。
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/// </summary>
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internal static class CompileServer
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{
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public const string AssemblyFile = "StudentApp.dll";
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public const string PdbFile = "StudentApp.pdb";
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public const string ExportFile = "export.exe";
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private static readonly JsonSerializerOptions JsonOptions = new() { Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping };
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public static int Run()
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{
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using var input = new StreamReader(Console.OpenStandardInput(), new UTF8Encoding(false));
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using var output = new StreamWriter(Console.OpenStandardOutput(), new UTF8Encoding(false)) { AutoFlush = true };
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WarmUp();
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output.WriteLine(new JsonObject { ["type"] = "ready" }.ToJsonString(JsonOptions));
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while (input.ReadLine() is { } line)
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{
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JsonObject reply;
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JsonNode? id = null;
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try
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{
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var request = JsonNode.Parse(line)!.AsObject();
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id = request["id"]?.DeepClone();
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var dir = (string?)request["dir"] ?? throw new ArgumentException("缺少 dir");
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reply = request["export"] is JsonObject export
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? Export(dir, (string?)export["libs"] ?? "", (string?)export["name"] ?? "")
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: Compile(dir);
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}
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catch (Exception ex)
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{
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reply = new JsonObject { ["type"] = "compileFailed", ["message"] = ex.Message };
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}
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reply["id"] = id;
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output.WriteLine(reply.ToJsonString(JsonOptions));
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}
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return 0;
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}
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private static JsonObject Compile(string dir)
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{
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var watch = Stopwatch.StartNew();
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var result = StudentCompiler.Compile(dir);
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if (result.Success)
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{
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File.WriteAllBytes(Path.Combine(dir, AssemblyFile), result.Assembly);
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File.WriteAllBytes(Path.Combine(dir, PdbFile), result.Pdb);
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}
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return new JsonObject
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{
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["type"] = "compiled",
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["ok"] = result.Success,
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["diagnostics"] = result.Diagnostics,
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["ms"] = watch.ElapsedMilliseconds,
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};
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}
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/// <summary>
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/// 导出 EXE：照教材工程编译成 .NET Framework 程序，嵌入 libs 目录下的教材 dll，成功时写到工程目录的 ExportFile。
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/// name 是程序集名（exe 的名字），由服务器按工程取好。
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/// </summary>
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private static JsonObject Export(string dir, string libs, string name)
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{
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var watch = Stopwatch.StartNew();
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var result = ExeExporter.Export(dir, libs, Sim.Host.ProjectResources.Directory, string.IsNullOrWhiteSpace(name) ? "上位机程序" : name);
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if (result.Success) File.WriteAllBytes(Path.Combine(dir, ExportFile), result.Exe);
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return new JsonObject
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{
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["type"] = "compiled",
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["ok"] = result.Success,
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["diagnostics"] = result.Diagnostics,
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["ms"] = watch.ElapsedMilliseconds,
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};
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}
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/// <summary>启动时编译一个小程序，让 Roslyn 完成加载和 JIT，学生第一次点"运行"时就不用等</summary>
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private static void WarmUp()
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{
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var dir = Directory.CreateTempSubdirectory("sim-warmup-");
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try
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{
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File.WriteAllText(Path.Combine(dir.FullName, "Program.cs"),
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"using System.Windows.Forms; static class P { static void Main() { var f = new Form(); f.Text = \"预热\"; } }");
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StudentCompiler.Compile(dir.FullName);
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}
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finally
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{
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dir.Delete(recursive: true);
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}
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}
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}
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