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nub31
2025-09-12 16:58:09 +02:00
parent c29d056ebc
commit 387ac34137
12 changed files with 212 additions and 278 deletions
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34
compiler/NubLang/Generation/QBE/QBEGenerator.cs
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@@ -1,8 +1,8 @@
using System.Diagnostics;
using System.Collections.Immutable;
using System.Diagnostics;
using System.Globalization;
using System.Text;
using NubLang.Tokenization;
using NubLang.TypeChecking;
using NubLang.TypeChecking.Node;
namespace NubLang.Generation.QBE;
@@ -11,7 +11,8 @@ public class QBEGenerator
{
private readonly QBEWriter _writer;
private readonly IReadOnlyList<DefinitionNode> _definitions;
private readonly IReadOnlyDictionary<string, Module> _moduleSignatures;
private readonly ImmutableHashSet<StructTypeNode> _structTypes;
private readonly ImmutableHashSet<InterfaceTypeNode> _interfaceTypes;
private readonly List<CStringLiteral> _cStringLiterals = [];
private readonly List<StringLiteral> _stringLiterals = [];
@@ -23,10 +24,11 @@ public class QBEGenerator
private int _stringLiteralIndex;
private bool _codeIsReachable = true;
public QBEGenerator(IReadOnlyList<DefinitionNode> definitions, IReadOnlyDictionary<string, Module> moduleSignatures)
public QBEGenerator(IReadOnlyList<DefinitionNode> definitions, ImmutableHashSet<StructTypeNode> structTypes, ImmutableHashSet<InterfaceTypeNode> interfaceTypes)
{
_definitions = definitions;
_moduleSignatures = moduleSignatures;
_structTypes = structTypes;
_interfaceTypes = interfaceTypes;
_writer = new QBEWriter();
}
@@ -42,13 +44,10 @@ public class QBEGenerator
_stringLiteralIndex = 0;
_codeIsReachable = true;
foreach (var (module, signature) in _moduleSignatures)
foreach (var structType in _structTypes)
{
foreach (var structType in signature.ExportedStructTypes)
{
EmitStructType(module, structType.StructType);
_writer.NewLine();
}
EmitStructType(structType);
_writer.NewLine();
}
foreach (var structDef in _definitions.OfType<StructNode>())
@@ -386,7 +385,7 @@ public class QBEGenerator
_writer.Write(FuncQBETypeName(funcDef.Signature.ReturnType) + ' ');
}
_writer.Write(FuncName(funcDef.Module, funcDef.Name));
_writer.Write(FuncName(funcDef.Module, funcDef.Name, funcDef.ExternSymbol));
_writer.Write("(");
foreach (var parameter in funcDef.Signature.Parameters)
@@ -453,9 +452,9 @@ public class QBEGenerator
}
}
private void EmitStructType(string module, StructTypeNode structType)
private void EmitStructType(StructTypeNode structType)
{
_writer.WriteLine($"type {StructTypeName(module, structType.Name)} = {{ ");
_writer.WriteLine($"type {StructTypeName(structType.Module, structType.Name)} = {{ ");
foreach (var field in structType.Fields)
{
@@ -658,7 +657,7 @@ public class QBEGenerator
private string EmitFuncIdentifier(FuncIdentifierNode funcIdent)
{
return FuncName(funcIdent.Module, funcIdent.Name);
return FuncName(funcIdent.Module, funcIdent.Name, funcIdent.ExternSymbol);
}
private string EmitVariableIdentifier(VariableIdentifierNode variableIdent)
@@ -1391,10 +1390,9 @@ public class QBEGenerator
return $"$string{++_stringLiteralIndex}";
}
private string FuncName(string module, string name)
private string FuncName(string module, string name, string? externSymbol)
{
var function = _moduleSignatures[module].AllFunctions.First(x => x.Name == name);
var symbol = function.ExternSymbol ?? $"{module}.{name}";
var symbol = externSymbol ?? $"{module}.{name}";
return "$" + symbol;
}

48
compiler/NubLang/Modules/Module.cs Normal file
View File

@@ -0,0 +1,48 @@
using NubLang.Parsing.Syntax;
namespace NubLang.Modules;
public class Module
{
private readonly List<ModuleStructType> _structs = [];
private readonly List<ModuleInterfaceType> _interfaces = [];
private readonly List<ModuleFuncType> _functions = [];
public void RegisterStruct(bool exported, string name, IReadOnlyList<ModuleStructTypeField> fields)
{
_structs.Add(new ModuleStructType(exported, name, fields));
}
public void RegisterInterface(bool exported, string name)
{
_interfaces.Add(new ModuleInterfaceType(exported, name));
}
public void RegisterFunction(bool exported, string name, string? externSymbol, FuncTypeSyntax type)
{
_functions.Add(new ModuleFuncType(exported, name, externSymbol, type));
}
public IReadOnlyList<ModuleStructType> StructTypes(bool includePrivate)
{
return _structs.Where(x => x.Exported || includePrivate).ToList();
}
public IReadOnlyList<ModuleInterfaceType> InterfaceTypes(bool includePrivate)
{
return _interfaces.Where(x => x.Exported || includePrivate).ToList();
}
public IReadOnlyList<ModuleFuncType> Functions(bool includePrivate)
{
return _functions.Where(x => x.Exported || includePrivate).ToList();
}
}
public record ModuleStructTypeField(string Name, TypeSyntax Type, bool HasDefaultValue);
public record ModuleStructType(bool Exported, string Name, IReadOnlyList<ModuleStructTypeField> Fields);
public record ModuleInterfaceType(bool Exported, string Name);
public record ModuleFuncType(bool Exported, string Name, string? ExternSymbol, FuncTypeSyntax FuncType);

66
compiler/NubLang/Modules/ModuleRepository.cs Normal file
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@@ -0,0 +1,66 @@
using NubLang.Parsing.Syntax;
namespace NubLang.Modules;
public class ModuleRepository
{
private readonly Dictionary<string, Module> _modules = new();
public ModuleRepository(IReadOnlyList<SyntaxTree> syntaxTrees)
{
foreach (var syntaxTree in syntaxTrees)
{
var moduleName = syntaxTree.Metadata.ModuleName;
var module = GetOrCreate(moduleName);
ProcessSyntaxTree(module, syntaxTree);
}
}
private static void ProcessSyntaxTree(Module module, SyntaxTree syntaxTree)
{
foreach (var definition in syntaxTree.Definitions)
{
switch (definition)
{
case FuncSyntax funcDef:
{
var parameters = funcDef.Signature.Parameters.Select(x => x.Type).ToList();
var type = new FuncTypeSyntax([], parameters, funcDef.Signature.ReturnType);
module.RegisterFunction(funcDef.Exported, funcDef.Name, funcDef.ExternSymbol, type);
break;
}
case StructSyntax structDef:
{
var fields = structDef.Fields.Select(x => new ModuleStructTypeField(x.Name, x.Type, x.Value.HasValue)).ToList();
module.RegisterStruct(structDef.Exported, structDef.Name, fields);
break;
}
case InterfaceSyntax interfaceDef:
{
module.RegisterInterface(interfaceDef.Exported, interfaceDef.Name);
break;
}
default:
{
throw new ArgumentOutOfRangeException(nameof(definition));
}
}
}
}
public IReadOnlyDictionary<string, Module> Modules()
{
return _modules;
}
private Module GetOrCreate(string name)
{
if (!_modules.TryGetValue(name, out var module))
{
module = new Module();
_modules[name] = module;
}
return module;
}
}

4
compiler/NubLang/Parsing/Parser.cs
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@@ -183,8 +183,6 @@ public sealed class Parser
List<StructFieldSyntax> fields = [];
List<StructFuncSyntax> funcs = [];
var fieldIndex = 0;
while (!TryExpectSymbol(Symbol.CloseBrace))
{
var memberStartIndex = _tokenIndex;
@@ -210,7 +208,7 @@ public sealed class Parser
fieldValue = ParseExpression();
}
fields.Add(new StructFieldSyntax(GetTokens(memberStartIndex), fieldIndex++, fieldName, fieldType, fieldValue));
fields.Add(new StructFieldSyntax(GetTokens(memberStartIndex), fieldName, fieldType, fieldValue));
}
}

2
compiler/NubLang/Parsing/Syntax/DefinitionSyntax.cs
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@@ -10,7 +10,7 @@ public record FuncSignatureSyntax(IEnumerable<Token> Tokens, IReadOnlyList<FuncP
public record FuncSyntax(IEnumerable<Token> Tokens, string Name, bool Exported, string? ExternSymbol, FuncSignatureSyntax Signature, BlockSyntax? Body) : DefinitionSyntax(Tokens, Name, Exported);
public record StructFieldSyntax(IEnumerable<Token> Tokens, int Index, string Name, TypeSyntax Type, Optional<ExpressionSyntax> Value) : SyntaxNode(Tokens);
public record StructFieldSyntax(IEnumerable<Token> Tokens, string Name, TypeSyntax Type, Optional<ExpressionSyntax> Value) : SyntaxNode(Tokens);
public record StructFuncSyntax(IEnumerable<Token> Tokens, string Name, FuncSignatureSyntax Signature, BlockSyntax Body) : SyntaxNode(Tokens);

189
compiler/NubLang/TypeChecking/Module.cs
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@@ -1,189 +0,0 @@
using NubLang.Parsing.Syntax;
using NubLang.TypeChecking.Node;
namespace NubLang.TypeChecking;
public class Module
{
public static IReadOnlyDictionary<string, Module> CollectFromSyntaxTrees(IReadOnlyList<SyntaxTree> syntaxTrees)
{
var modules = new Dictionary<string, Module>();
foreach (var syntaxTree in syntaxTrees)
{
var moduleName = syntaxTree.Metadata.ModuleName;
if (!modules.TryGetValue(moduleName, out var module))
{
module = new Module();
modules[moduleName] = module;
}
foreach (var def in syntaxTree.Definitions)
{
switch (def)
{
case FuncSyntax funcDef:
{
var parameters = funcDef.Signature.Parameters.Select(p => ResolveType(p.Type)).ToList();
var returnType = ResolveType(funcDef.Signature.ReturnType);
var type = new FuncTypeNode(parameters, returnType);
module._functions.Add(new ModuleFuncType(def.Exported, funcDef.Name, funcDef.ExternSymbol, type));
break;
}
case InterfaceSyntax interfaceDef:
{
var functions = new List<InterfaceTypeFunc>();
for (var i = 0; i < interfaceDef.Functions.Count; i++)
{
var function = interfaceDef.Functions[i];
var parameters = function.Signature.Parameters.Select(p => ResolveType(p.Type)).ToList();
var returnType = ResolveType(function.Signature.ReturnType);
functions.Add(new InterfaceTypeFunc(function.Name, new FuncTypeNode(parameters, returnType), i));
}
var type = new InterfaceTypeNode(moduleName, interfaceDef.Name, functions);
module._interfaces.Add(new ModuleInterfaceType(def.Exported, type));
break;
}
case StructSyntax structDef:
{
var fields = new List<StructTypeField>();
foreach (var field in structDef.Fields)
{
fields.Add(new StructTypeField(field.Name, ResolveType(field.Type), field.Index, field.Value.HasValue));
}
var functions = new List<StructTypeFunc>();
foreach (var function in structDef.Functions)
{
var parameters = function.Signature.Parameters.Select(p => ResolveType(p.Type)).ToList();
var returnType = ResolveType(function.Signature.ReturnType);
functions.Add(new StructTypeFunc(function.Name, new FuncTypeNode(parameters, returnType)));
}
var interfaceImplementations = new List<InterfaceTypeNode>();
foreach (var interfaceImplementation in structDef.InterfaceImplementations)
{
if (interfaceImplementation is not CustomTypeSyntax customType)
{
throw new Exception("Interface implementation is not a custom type");
}
var resolvedType = ResolveType(customType);
if (resolvedType is not InterfaceTypeNode interfaceType)
{
throw new Exception("Interface implementation is not a interface");
}
interfaceImplementations.Add(interfaceType);
}
var type = new StructTypeNode(moduleName, structDef.Name, fields, functions, interfaceImplementations);
module._structs.Add(new ModuleStructType(def.Exported, type));
break;
}
default:
{
throw new ArgumentOutOfRangeException(nameof(def));
}
}
}
}
return modules;
TypeNode ResolveType(TypeSyntax type)
{
return type switch
{
BoolTypeSyntax => new BoolTypeNode(),
CStringTypeSyntax => new CStringTypeNode(),
IntTypeSyntax i => new IntTypeNode(i.Signed, i.Width),
CustomTypeSyntax c => ResolveCustomType(c.Module, c.Name),
FloatTypeSyntax f => new FloatTypeNode(f.Width),
FuncTypeSyntax func => new FuncTypeNode(func.Parameters.Select(ResolveType).ToList(), ResolveType(func.ReturnType)),
ArrayTypeSyntax arr => new ArrayTypeNode(ResolveType(arr.BaseType)),
PointerTypeSyntax ptr => new PointerTypeNode(ResolveType(ptr.BaseType)),
StringTypeSyntax => new StringTypeNode(),
VoidTypeSyntax => new VoidTypeNode(),
_ => throw new NotSupportedException($"Unknown type syntax: {type}")
};
}
TypeNode ResolveCustomType(string moduleName, string typeName)
{
if (!modules.TryGetValue(moduleName, out var module))
{
throw new Exception("Module not found: " + moduleName);
}
var structType = module.AllStructTypes.FirstOrDefault(x => x.StructType.Name == typeName);
if (structType != null)
{
return structType.StructType;
}
var interfaceType = module.AllInterfaceTypes.FirstOrDefault(x => x.InterfaceType.Name == typeName);
if (interfaceType != null)
{
return interfaceType.InterfaceType;
}
throw new Exception($"Type {typeName} not found in module {moduleName}");
}
}
private readonly List<ModuleStructType> _structs = [];
private readonly List<ModuleInterfaceType> _interfaces = [];
private readonly List<ModuleFuncType> _functions = [];
public IReadOnlyList<ModuleStructType> ExportedStructTypes => _structs.Where(x => x.Exported).ToList();
public IReadOnlyList<ModuleInterfaceType> ExportedInterfaceTypes => _interfaces.Where(x => x.Exported).ToList();
public IReadOnlyList<ModuleFuncType> ExportedFunctions => _functions.Where(x => x.Exported).ToList();
public IReadOnlyList<ModuleStructType> AllStructTypes => _structs;
public IReadOnlyList<ModuleInterfaceType> AllInterfaceTypes => _interfaces;
public IReadOnlyList<ModuleFuncType> AllFunctions => _functions;
}
public class ModuleStructType
{
public ModuleStructType(bool exported, StructTypeNode structType)
{
Exported = exported;
StructType = structType;
}
public bool Exported { get; }
public StructTypeNode StructType { get; }
}
public class ModuleInterfaceType
{
public ModuleInterfaceType(bool exported, InterfaceTypeNode interfaceType)
{
Exported = exported;
InterfaceType = interfaceType;
}
public bool Exported { get; }
public InterfaceTypeNode InterfaceType { get; }
}
public class ModuleFuncType
{
public ModuleFuncType(bool exported, string name, string? externSymbol, FuncTypeNode funcType)
{
Exported = exported;
Name = name;
ExternSymbol = externSymbol;
FuncType = funcType;
}
public bool Exported { get; }
public string Name { get; }
public string? ExternSymbol { get; }
public FuncTypeNode FuncType { get; }
}

2
compiler/NubLang/TypeChecking/Node/DefinitionNode.cs
View File

@@ -8,7 +8,7 @@ public record FuncSignatureNode(IReadOnlyList<FuncParameterNode> Parameters, Typ
public record FuncNode(string Module, string Name, string? ExternSymbol, FuncSignatureNode Signature, BlockNode? Body) : DefinitionNode(Module, Name);
public record StructFieldNode(int Index, string Name, TypeNode Type, Optional<ExpressionNode> Value) : Node;
public record StructFieldNode(string Name, TypeNode Type, Optional<ExpressionNode> Value) : Node;
public record StructFuncNode(string Name, FuncSignatureNode Signature, BlockNode Body) : Node;

2
compiler/NubLang/TypeChecking/Node/ExpressionNode.cs
View File

@@ -49,7 +49,7 @@ public record VariableIdentifierNode(TypeNode Type, string Name) : LValueExpress
public record FuncParameterIdentifierNode(TypeNode Type, string Name) : RValueExpressionNode(Type);
public record FuncIdentifierNode(TypeNode Type, string Module, string Name) : RValueExpressionNode(Type);
public record FuncIdentifierNode(TypeNode Type, string Module, string Name, string? ExternSymbol) : RValueExpressionNode(Type);
public record ArrayInitializerNode(TypeNode Type, ExpressionNode Capacity, TypeNode ElementType) : RValueExpressionNode(Type);

3
compiler/NubLang/TypeChecking/Node/TypeNode.cs
View File

@@ -174,11 +174,10 @@ public class StringTypeNode : ComplexTypeNode
public override int GetHashCode() => HashCode.Combine(typeof(StringTypeNode));
}
public class StructTypeField(string name, TypeNode type, int index, bool hasDefaultValue)
public class StructTypeField(string name, TypeNode type, bool hasDefaultValue)
{
public string Name { get; } = name;
public TypeNode Type { get; } = type;
public int Index { get; } = index;
public bool HasDefaultValue { get; } = hasDefaultValue;
}

103
compiler/NubLang/TypeChecking/TypeChecker.cs
View File

@@ -1,5 +1,6 @@
using System.Diagnostics;
using NubLang.Diagnostics;
using NubLang.Modules;
using NubLang.Parsing.Syntax;
using NubLang.Tokenization;
using NubLang.TypeChecking.Node;
@@ -9,42 +10,51 @@ namespace NubLang.TypeChecking;
public sealed class TypeChecker
{
private readonly SyntaxTree _syntaxTree;
private readonly IReadOnlyDictionary<string, Module> _importedModules;
private readonly Dictionary<string, Module> _visibleModules;
private readonly Stack<Scope> _scopes = [];
private readonly Stack<TypeNode> _funcReturnTypes = [];
private readonly List<Diagnostic> _diagnostics = [];
private readonly List<StructTypeNode> _referencedStructTypes = [];
private readonly List<InterfaceTypeNode> _referencedInterfaceTypes = [];
private readonly List<DefinitionNode> _definitions = [];
private Scope Scope => _scopes.Peek();
public TypeChecker(SyntaxTree syntaxTree, IReadOnlyDictionary<string, Module> moduleSignatures)
public TypeChecker(SyntaxTree syntaxTree, ModuleRepository moduleRepository)
{
_syntaxTree = syntaxTree;
_importedModules = moduleSignatures.Where(x => syntaxTree.Metadata.Imports.Contains(x.Key) || _syntaxTree.Metadata.ModuleName == x.Key).ToDictionary();
_visibleModules = moduleRepository
.Modules()
.Where(x => syntaxTree.Metadata.Imports.Contains(x.Key) || _syntaxTree.Metadata.ModuleName == x.Key)
.ToDictionary();
}
public IReadOnlyList<Diagnostic> GetDiagnostics() => _diagnostics;
public IReadOnlyList<DefinitionNode> Definitions => _definitions;
public IReadOnlyList<Diagnostic> Diagnostics => _diagnostics;
public IReadOnlyList<StructTypeNode> ReferencedStructTypes => _referencedStructTypes;
public IReadOnlyList<InterfaceTypeNode> ReferencedInterfaceTypes => _referencedInterfaceTypes;
public IReadOnlyList<DefinitionNode> Check()
public void Check()
{
_diagnostics.Clear();
_scopes.Clear();
var definitions = new List<DefinitionNode>();
_funcReturnTypes.Clear();
_diagnostics.Clear();
_referencedStructTypes.Clear();
_referencedInterfaceTypes.Clear();
_definitions.Clear();
foreach (var definition in _syntaxTree.Definitions)
{
try
{
definitions.Add(CheckDefinition(definition));
_definitions.Add(CheckDefinition(definition));
}
catch (TypeCheckerException e)
{
_diagnostics.Add(e.Diagnostic);
}
}
return definitions;
}
private DefinitionNode CheckDefinition(DefinitionSyntax node)
@@ -78,7 +88,7 @@ public sealed class TypeChecker
value = CheckExpression(field.Value.Value);
}
fields.Add(new StructFieldNode(field.Index, field.Name, ResolveType(field.Type), value));
fields.Add(new StructFieldNode(field.Name, ResolveType(field.Type), value));
}
var functions = new List<StructFuncNode>();
@@ -351,12 +361,12 @@ public sealed class TypeChecker
}
// Second, look in the current module for a function matching the identifier
var module = _importedModules[_syntaxTree.Metadata.ModuleName];
var function = module.AllFunctions.FirstOrDefault(x => x.Name == expression.Name);
var module = _visibleModules[_syntaxTree.Metadata.ModuleName];
var function = module.Functions(true).FirstOrDefault(x => x.Name == expression.Name);
if (function != null)
{
return new FuncIdentifierNode(function.FuncType, _syntaxTree.Metadata.ModuleName, expression.Name);
return new FuncIdentifierNode(ResolveType(function.FuncType), _syntaxTree.Metadata.ModuleName, expression.Name, function.ExternSymbol);
}
throw new TypeCheckerException(Diagnostic.Error($"Symbol {expression.Name} not found").At(expression).Build());
@@ -364,27 +374,18 @@ public sealed class TypeChecker
private ExpressionNode CheckModuleIdentifier(ModuleIdentifierSyntax expression)
{
if (!_importedModules.TryGetValue(expression.Module, out var module))
if (!_visibleModules.TryGetValue(expression.Module, out var module))
{
throw new TypeCheckerException(Diagnostic.Error($"Module {expression.Module} not found").WithHelp($"import \"{expression.Module}\"").At(expression).Build());
}
// First, look for the exported function in the specified module (or all functions if current module)
if (expression.Module == _syntaxTree.Metadata.ModuleName)
var includePrivate = expression.Module == _syntaxTree.Metadata.ModuleName;
// First, look for the exported function in the specified module
var function = module.Functions(includePrivate).FirstOrDefault(x => x.Name == expression.Name);
if (function != null)
{
var function = module.AllFunctions.FirstOrDefault(x => x.Name == expression.Name);
if (function != null)
{
return new FuncIdentifierNode(function.FuncType, expression.Module, expression.Name);
}
}
else
{
var function = module.ExportedFunctions.FirstOrDefault(x => x.Name == expression.Name);
if (function != null)
{
return new FuncIdentifierNode(function.FuncType, expression.Module, expression.Name);
}
return new FuncIdentifierNode(ResolveType(function.FuncType), expression.Module, expression.Name, function.ExternSymbol);
}
throw new TypeCheckerException(Diagnostic.Error($"No exported symbol {expression.Name} not found in module {expression.Module}").At(expression).Build());
@@ -521,38 +522,28 @@ public sealed class TypeChecker
private TypeNode ResolveCustomType(CustomTypeSyntax customType)
{
if (!_importedModules.TryGetValue(customType.Module, out var module))
if (!_visibleModules.TryGetValue(customType.Module, out var module))
{
throw new TypeCheckerException(Diagnostic.Error($"Module {customType.Module} not found").WithHelp($"import \"{customType.Module}\"").At(customType).Build());
}
if (customType.Module == _syntaxTree.Metadata.ModuleName)
{
var structType = module.AllStructTypes.FirstOrDefault(x => x.StructType.Name == customType.Name);
if (structType != null)
{
return structType.StructType;
}
var includePrivate = customType.Module == _syntaxTree.Metadata.ModuleName;
var interfaceType = module.AllInterfaceTypes.FirstOrDefault(x => x.InterfaceType.Name == customType.Name);
if (interfaceType != null)
{
return interfaceType.InterfaceType;
}
var structType = module.StructTypes(includePrivate).FirstOrDefault(x => x.Name == customType.Name);
if (structType != null)
{
var fields = structType.Fields.Select(x => new StructTypeField(x.Name, ResolveType(x.Type), x.HasDefaultValue)).ToList();
var result = new StructTypeNode(customType.Module, structType.Name, fields, [], []);
_referencedStructTypes.Add(result);
return result;
}
else
{
var structType = module.ExportedStructTypes.FirstOrDefault(x => x.StructType.Name == customType.Name);
if (structType != null)
{
return structType.StructType;
}
var interfaceType = module.ExportedInterfaceTypes.FirstOrDefault(x => x.InterfaceType.Name == customType.Name);
if (interfaceType != null)
{
return interfaceType.InterfaceType;
}
var interfaceType = module.InterfaceTypes(includePrivate).FirstOrDefault(x => x.Name == customType.Name);
if (interfaceType != null)
{
var result = new InterfaceTypeNode(customType.Module, interfaceType.Name, []);
_referencedInterfaceTypes.AddRange(result);
return result;
}
throw new TypeCheckerException(Diagnostic.Error($"Type {customType.Name} not found in module {customType.Module}").At(customType).Build());