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src/compiler/CLI/CLI.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <AssemblyName>nub</AssemblyName>
+        <OutputType>Exe</OutputType>
+        <TargetFramework>net9.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+        <PublishAot>true</PublishAot>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\Generation\Generation.csproj" />
+      <ProjectReference Include="..\Syntax\Syntax.csproj" />
+    </ItemGroup>
+
+</Project>

src/compiler/CLI/GCC.cs

@@ -0,0 +1,52 @@
+using System.Diagnostics;
+
+namespace CLI;
+
+public static class GCC
+{
+    public static async Task<bool> Assemble(string asmPath, string objPath)
+    {
+        using var gccProcess = new Process();
+        gccProcess.StartInfo = new ProcessStartInfo("gcc", ["-g", "-c", asmPath, "-o", objPath])
+        {
+            UseShellExecute = false,
+            RedirectStandardOutput = true,
+            RedirectStandardError = true,
+            CreateNoWindow = true
+        };
+
+        gccProcess.Start();
+        await gccProcess.WaitForExitAsync();
+
+        var gccErrors = await gccProcess.StandardError.ReadToEndAsync();
+        if (!string.IsNullOrWhiteSpace(gccErrors))
+        {
+            await Console.Error.WriteLineAsync("gcc error when assembling:\n" + gccErrors);
+        }
+
+        return gccProcess.ExitCode == 0;
+    }
+    
+    public static async Task<bool> Link(List<string> objectFiles, string outputPath)
+    {
+        using var gccProcess = new Process();
+        gccProcess.StartInfo = new ProcessStartInfo("gcc", ["-g", "-nostartfiles", "-o", outputPath, ..objectFiles])
+        {
+            UseShellExecute = false,
+            RedirectStandardOutput = true,
+            RedirectStandardError = true,
+            CreateNoWindow = true
+        };
+
+        gccProcess.Start();
+        await gccProcess.WaitForExitAsync();
+
+        var gccErrors = await gccProcess.StandardError.ReadToEndAsync();
+        if (!string.IsNullOrWhiteSpace(gccErrors))
+        {
+            await Console.Error.WriteLineAsync("gcc error when linking:\n" + gccErrors);
+        }
+
+        return gccProcess.ExitCode == 0;
+    }
+}

src/compiler/CLI/Program.cs

@@ -0,0 +1,118 @@
+using System.Diagnostics;
+using CLI;
+using Generation.QBE;
+using Syntax;
+using Syntax.Diagnostics;
+using Syntax.Parsing;
+using Syntax.Tokenization;
+using Syntax.Typing;
+using Binder = Syntax.Typing.Binder;
+
+const string BIN_DIR = "bin";
+const string BIN_INT_DIR = "bin-int";
+
+if (Directory.Exists(BIN_DIR))
+{
+    Directory.Delete(BIN_DIR, true);
+}
+
+if (Directory.Exists(BIN_INT_DIR))
+{
+    Directory.Delete(BIN_INT_DIR, true);
+}
+
+Directory.CreateDirectory(BIN_DIR);
+Directory.CreateDirectory(BIN_INT_DIR);
+
+var diagnostics = new List<Diagnostic>();
+var syntaxTrees = new List<SyntaxTree>();
+
+foreach (var file in args)
+{
+    if (!File.Exists(file))
+    {
+        Console.Error.WriteLine($"File '{file}' does not exist");
+        return 1;
+    }
+}
+
+foreach (var file in args)
+{
+    var content = File.ReadAllText(file);
+    var sourceText = new SourceText(file, content);
+
+    var tokenizeResult = Tokenizer.Tokenize(sourceText, out var tokenizerDiagnostics);
+    diagnostics.AddRange(tokenizerDiagnostics);
+
+    var syntaxTree = Parser.ParseFile(tokenizeResult, file, out var parseDiagnostics);
+    diagnostics.AddRange(parseDiagnostics);
+
+    if (syntaxTree != null)
+    {
+        syntaxTrees.Add(syntaxTree);
+    }
+    else
+    {
+        throw new Exception();
+    }
+}
+
+var definitionTable = new DefinitionTable(syntaxTrees);
+
+var boundSyntaxTrees = new List<BoundSyntaxTree>();
+
+foreach (var syntaxTree in syntaxTrees)
+{
+    boundSyntaxTrees.Add(Binder.Bind(syntaxTree, definitionTable));
+}
+
+var boundDefinitionTable = new BoundDefinitionTable(boundSyntaxTrees);
+
+foreach (var diagnostic in diagnostics)
+{
+    Console.Error.WriteLine(diagnostic.FormatANSI());
+}
+
+if (diagnostics.Any(diagnostic => diagnostic.Severity == DiagnosticSeverity.Error))
+{
+    return 1;
+}
+
+var objectFiles = new List<string>();
+
+objectFiles.Add("/home/oliste/repos/nub-lang/src/runtime/runtime.o");
+
+foreach (var boundSyntaxTree in boundSyntaxTrees)
+{
+    var relativeFilePath = Path.GetRelativePath(Environment.CurrentDirectory, boundSyntaxTree.FilePath);
+    var outputPath = Path.Combine(BIN_INT_DIR, relativeFilePath);
+
+    var outputDirectory = Path.GetDirectoryName(outputPath);
+    Debug.Assert(!string.IsNullOrWhiteSpace(outputDirectory));
+    Directory.CreateDirectory(outputDirectory);
+
+    var ssa = QBEGenerator.Emit(boundSyntaxTree, boundDefinitionTable);
+    var ssaPath = Path.ChangeExtension(outputPath, "ssa");
+    File.WriteAllText(ssaPath, ssa);
+
+    var asm = await QBE.Invoke(ssa);
+    if (asm == null)
+    {
+        return 1;
+    }
+
+    var asmPath = Path.ChangeExtension(outputPath, "s");
+    await File.WriteAllTextAsync(asmPath, asm);
+
+    var objPath = Path.ChangeExtension(outputPath, "o");
+    var asmSuccess = await GCC.Assemble(asmPath, objPath);
+    if (!asmSuccess)
+    {
+        return 1;
+    }
+
+    objectFiles.Add(objPath);
+}
+
+var linkSuccess = await GCC.Link(objectFiles, Path.Combine(BIN_DIR, "out"));
+return linkSuccess ? 0 : 1;

src/compiler/CLI/QBE.cs

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+using System.Diagnostics;
+
+namespace CLI;
+
+public static class QBE
+{
+    public static async Task<string?> Invoke(string ssa)
+    {
+        using var qbeProcess = new Process();
+        qbeProcess.StartInfo = new ProcessStartInfo
+        {
+            FileName = "qbe",
+            UseShellExecute = false,
+            RedirectStandardInput = true,
+            RedirectStandardOutput = true,
+            RedirectStandardError = true,
+            CreateNoWindow = true
+        };
+
+        qbeProcess.Start();
+
+        await qbeProcess.StandardInput.WriteAsync(ssa);
+        qbeProcess.StandardInput.Close();
+
+        await qbeProcess.WaitForExitAsync();
+
+        var qbeErrors = await qbeProcess.StandardError.ReadToEndAsync();
+        if (!string.IsNullOrWhiteSpace(qbeErrors))
+        {
+            await Console.Error.WriteLineAsync("qbe error:\n" + qbeErrors);
+        }
+
+        var asm = await qbeProcess.StandardOutput.ReadToEndAsync();
+
+        return qbeProcess.ExitCode == 0 ? asm : null;
+    }
+}