1412 lines
50 KiB
C#
1412 lines
50 KiB
C#
using System.Diagnostics;
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using System.Globalization;
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using System.Text;
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using Syntax;
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using Syntax.Parsing.Node;
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using Syntax.Tokenization;
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using Syntax.Typing;
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using Syntax.Typing.BoundNode;
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namespace Generation.QBE;
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public static class QBEGenerator
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{
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private static BoundSyntaxTree _syntaxTree = null!;
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private static BoundDefinitionTable _definitionTable = null!;
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private static StringBuilder _builder = new();
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private static List<CStringLiteral> _cStringLiterals = [];
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private static List<StringLiteral> _stringLiterals = [];
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private static Stack<string> _breakLabels = [];
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private static Stack<string> _continueLabels = [];
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private static Queue<(BoundAnonymousFuncNode Func, string Name)> _anonymousFunctions = [];
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private static Stack<Variable> _variables = [];
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private static Stack<int> _variableScopes = [];
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private static int _variableIndex;
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private static int _labelIndex;
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private static int _anonymousFuncIndex;
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private static int _cStringLiteralIndex;
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private static int _stringLiteralIndex;
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private static bool _codeIsReachable = true;
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public static string Emit(BoundSyntaxTree syntaxTree, BoundDefinitionTable definitionTable)
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{
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_syntaxTree = syntaxTree;
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_definitionTable = definitionTable;
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_builder = new StringBuilder();
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_cStringLiterals = [];
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_stringLiterals = [];
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_breakLabels = [];
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_continueLabels = [];
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_anonymousFunctions = [];
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_variables = [];
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_variableScopes = [];
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_variableIndex = 0;
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_labelIndex = 0;
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_anonymousFuncIndex = 0;
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_cStringLiteralIndex = 0;
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_stringLiteralIndex = 0;
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_codeIsReachable = true;
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foreach (var structDef in _definitionTable.GetStructs())
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{
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EmitStructDefinition(structDef);
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_builder.AppendLine();
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}
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foreach (var funcDef in _syntaxTree.Definitions.OfType<BoundLocalFuncDefinitionNode>())
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{
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EmitFuncDefinition(FuncName(funcDef), funcDef.Parameters, funcDef.ReturnType, funcDef.Body, funcDef.Exported);
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_builder.AppendLine();
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}
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while (_anonymousFunctions.TryDequeue(out var anon))
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{
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EmitFuncDefinition(anon.Name, anon.Func.Parameters, anon.Func.ReturnType, anon.Func.Body, false);
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_builder.AppendLine();
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}
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foreach (var cStringLiteral in _cStringLiterals)
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{
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_builder.AppendLine($"data {cStringLiteral.Name} = {{ b \"{cStringLiteral.Value}\", b 0 }}");
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}
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foreach (var stringLiteral in _stringLiterals)
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{
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var bytes = Encoding.UTF8.GetBytes(stringLiteral.Value).Select(b => $"b {b}");
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_builder.AppendLine($"data {stringLiteral.Name} = {{ l {stringLiteral.Value.Length}, {string.Join(", ", bytes)} }}");
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}
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return _builder.ToString();
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}
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private static string VarName()
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{
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return $"%v{++_variableIndex}";
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}
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private static string LabelName()
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{
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return $"@l{++_labelIndex}";
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}
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private static string CStringName()
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{
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return $"$cstring{++_cStringLiteralIndex}";
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}
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private static string StringName()
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{
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return $"$string{++_stringLiteralIndex}";
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}
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private static string FuncName(BoundFuncDefinition funcDef)
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{
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return funcDef switch
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{
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BoundExternFuncDefinitionNode externFuncDefinition => $"${externFuncDefinition.CallName}",
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BoundLocalFuncDefinitionNode localFuncDefinition => localFuncDefinition.Exported
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? $"${localFuncDefinition.Name}"
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: $"${localFuncDefinition.Namespace}_{localFuncDefinition.Name}",
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_ => throw new ArgumentOutOfRangeException(nameof(funcDef))
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};
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}
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private static string StructName(BoundStructDefinitionNode structDef)
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{
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return $":{structDef.Namespace}_{structDef.Name}";
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}
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private static void EmitStore(NubType type, string value, string destination)
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{
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var store = type switch
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{
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NubArrayType => "storel",
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NubPointerType => "storel",
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NubPrimitiveType primitiveType => primitiveType.Kind switch
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{
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PrimitiveTypeKind.I64 => "storel",
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PrimitiveTypeKind.I32 => "storew",
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PrimitiveTypeKind.I16 => "storeh",
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PrimitiveTypeKind.I8 => "storeb",
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PrimitiveTypeKind.U64 => "storel",
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PrimitiveTypeKind.U32 => "storew",
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PrimitiveTypeKind.U16 => "storeh",
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PrimitiveTypeKind.U8 => "storeb",
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PrimitiveTypeKind.F64 => "stored",
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PrimitiveTypeKind.F32 => "stores",
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PrimitiveTypeKind.Bool => "storew",
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_ => throw new ArgumentOutOfRangeException()
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},
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NubStructType => "storel",
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NubFuncType => "storel",
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NubCStringType => "storel",
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NubStringType => "storel",
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_ => throw new NotSupportedException($"'{type}' type cannot be used in store instructions")
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};
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_builder.AppendLine($" {store} {value}, {destination}");
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}
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private static Val EmitLoad(NubType type, string from)
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{
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var into = VarName();
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var load = type switch
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{
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NubArrayType => "loadl",
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NubPointerType => "loadl",
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NubPrimitiveType primitiveType => primitiveType.Kind switch
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{
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PrimitiveTypeKind.I64 => "loadl",
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PrimitiveTypeKind.I32 => "loadw",
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PrimitiveTypeKind.I16 => "loadsh",
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PrimitiveTypeKind.I8 => "loadsb",
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PrimitiveTypeKind.U64 => "loadl",
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PrimitiveTypeKind.U32 => "loadw",
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PrimitiveTypeKind.U16 => "loaduh",
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PrimitiveTypeKind.U8 => "loadub",
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PrimitiveTypeKind.F64 => "loadd",
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PrimitiveTypeKind.F32 => "loads",
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PrimitiveTypeKind.Bool => "loadw",
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_ => throw new ArgumentOutOfRangeException()
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},
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NubStructType => "loadl",
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NubFuncType => "loadl",
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NubCStringType => "loadl",
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NubStringType => "loadl",
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_ => throw new NotSupportedException($"'{type}' type cannot be used in load instructions")
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};
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_builder.AppendLine($" {into} {QBEAssign(type)} {load} {from}");
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return new Val(into, type, ValKind.Direct);
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}
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private static void EmitMemcpy(string source, string destination, string length)
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{
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_builder.AppendLine($" call $nub_memcpy(l {source}, l {destination}, l {length})");
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}
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private static string EmitArraySizeInBytes(NubArrayType type, string array)
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{
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var size = VarName();
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_builder.AppendLine($" {size} =l loadl {array}");
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_builder.AppendLine($" {size} =l mul {size}, {SizeOf(type.ElementType)}");
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_builder.AppendLine($" {size} =l add {size}, 8");
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return size;
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}
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private static string EmitCStringSizeInBytes(string cstring)
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{
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var size = VarName();
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_builder.AppendLine($" {size} =l call $nub_cstring_length(l {cstring})");
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_builder.AppendLine($" {size} =l add {size}, 1");
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return size;
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}
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private static string EmitStringSizeInBytes(string nubstring)
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{
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var size = VarName();
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_builder.AppendLine($" {size} =l loadl {nubstring}");
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_builder.AppendLine($" {size} =l add {size}, 8");
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return size;
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}
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private static void EmitCopyInto(NubType type, string source, string destination)
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{
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switch (type)
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{
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case NubArrayType nubArrayType:
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{
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var size = EmitArraySizeInBytes(nubArrayType, source);
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var buffer = VarName();
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_builder.AppendLine($" {buffer} =l alloc8 {size}");
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EmitMemcpy(source, buffer, size);
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EmitStore(type, buffer, destination);
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break;
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}
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case NubCStringType:
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{
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var size = EmitCStringSizeInBytes(source);
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var buffer = VarName();
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_builder.AppendLine($" {buffer} =l alloc8 {size}");
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EmitMemcpy(source, buffer, size);
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EmitStore(type, buffer, destination);
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break;
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}
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case NubStringType:
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{
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var size = EmitStringSizeInBytes(source);
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var buffer = VarName();
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_builder.AppendLine($" {buffer} =l alloc8 {size}");
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EmitMemcpy(source, buffer, size);
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EmitStore(type, buffer, destination);
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break;
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}
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case NubStructType nubStructType:
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{
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var size = SizeOf(nubStructType);
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EmitMemcpy(source, destination, size.ToString());
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break;
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}
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case NubPointerType:
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case NubPrimitiveType:
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{
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EmitStore(type, source, destination);
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break;
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}
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case NubVoidType:
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case NubFuncType:
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case NubAnyType:
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throw new NotSupportedException($"Cannot copy type '{type}'");
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default:
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throw new ArgumentOutOfRangeException(nameof(type));
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}
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}
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private static string EmitCopy(NubType type, string source)
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{
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var destination = VarName();
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switch (type)
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{
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case NubArrayType nubArrayType:
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{
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var size = EmitArraySizeInBytes(nubArrayType, source);
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_builder.AppendLine($" {destination} =l alloc8 {size}");
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EmitMemcpy(source, destination, size);
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break;
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}
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case NubCStringType:
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{
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var size = EmitCStringSizeInBytes(source);
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_builder.AppendLine($" {destination} =l alloc8 {size}");
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EmitMemcpy(source, destination, size);
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break;
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}
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case NubStringType:
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{
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var size = EmitStringSizeInBytes(source);
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_builder.AppendLine($" {destination} =l alloc8 {size}");
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EmitMemcpy(source, destination, size);
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break;
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}
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case NubStructType nubStructType:
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{
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var size = SizeOf(nubStructType);
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_builder.AppendLine($" {destination} =l alloc8 {size}");
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EmitMemcpy(source, destination, size.ToString());
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break;
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}
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case NubPointerType:
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case NubPrimitiveType:
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{
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_builder.AppendLine($" {destination} {QBEAssign(type)} {source}");
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break;
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}
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case NubVoidType:
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case NubFuncType:
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case NubAnyType:
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throw new NotSupportedException($"Cannot copy type '{type}'");
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default:
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throw new ArgumentOutOfRangeException(nameof(type));
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}
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return destination;
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}
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private static string QBEAssign(NubType type)
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{
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return type switch
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{
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NubArrayType => "=l",
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NubPointerType => "=l",
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NubPrimitiveType primitiveType => primitiveType.Kind switch
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{
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PrimitiveTypeKind.I64 => "=l",
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PrimitiveTypeKind.I32 => "=w",
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PrimitiveTypeKind.I16 => "=w",
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PrimitiveTypeKind.I8 => "=w",
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PrimitiveTypeKind.U64 => "=l",
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PrimitiveTypeKind.U32 => "=w",
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PrimitiveTypeKind.U16 => "=w",
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PrimitiveTypeKind.U8 => "=w",
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PrimitiveTypeKind.F64 => "=d",
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PrimitiveTypeKind.F32 => "=s",
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PrimitiveTypeKind.Bool => "=w",
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_ => throw new ArgumentOutOfRangeException()
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},
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NubStructType => "=l",
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NubFuncType => "=l",
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NubCStringType => "=l",
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NubStringType => "=l",
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_ => throw new NotSupportedException($"'{type}' type cannot be used in variables")
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};
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}
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private static int AlignmentOf(NubType type)
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{
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switch (type)
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{
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case NubPrimitiveType primitiveType:
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{
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return primitiveType.Kind switch
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{
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PrimitiveTypeKind.I64 or PrimitiveTypeKind.U64 or PrimitiveTypeKind.F64 => 8,
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PrimitiveTypeKind.I32 or PrimitiveTypeKind.U32 or PrimitiveTypeKind.F32 or PrimitiveTypeKind.Bool => 4,
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PrimitiveTypeKind.I16 or PrimitiveTypeKind.U16 => 2,
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PrimitiveTypeKind.I8 or PrimitiveTypeKind.U8 => 1,
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_ => throw new ArgumentOutOfRangeException()
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};
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}
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case NubStructType nubStructType:
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{
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var definition = _definitionTable.LookupStruct(nubStructType.Namespace, nubStructType.Name).GetValue();
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return definition.Fields.Max(f => AlignmentOf(f.Type));
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}
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case NubPointerType:
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case NubArrayType:
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case NubCStringType:
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case NubStringType:
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case NubFuncType:
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{
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return 8;
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}
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default:
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{
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throw new ArgumentOutOfRangeException();
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}
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}
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}
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private static int AlignTo(int offset, int alignment)
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{
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return (offset + alignment - 1) & ~(alignment - 1);
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}
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private static int SizeOf(NubType type)
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{
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switch (type)
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{
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case NubPrimitiveType primitiveType:
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{
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return primitiveType.Kind switch
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{
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PrimitiveTypeKind.I64 or PrimitiveTypeKind.U64 or PrimitiveTypeKind.F64 => 8,
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PrimitiveTypeKind.I32 or PrimitiveTypeKind.U32 or PrimitiveTypeKind.F32 or PrimitiveTypeKind.Bool => 4,
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PrimitiveTypeKind.I16 or PrimitiveTypeKind.U16 => 2,
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PrimitiveTypeKind.I8 or PrimitiveTypeKind.U8 => 1,
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_ => throw new ArgumentOutOfRangeException()
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};
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}
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case NubStructType nubStructType:
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{
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var definition = _definitionTable.LookupStruct(nubStructType.Namespace, nubStructType.Name).GetValue();
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var size = 0;
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var maxAlignment = 1;
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foreach (var field in definition.Fields)
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{
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var fieldAlignment = AlignmentOf(field.Type);
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maxAlignment = Math.Max(maxAlignment, fieldAlignment);
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size = AlignTo(size, fieldAlignment);
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size += SizeOf(field.Type);
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}
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size = AlignTo(size, maxAlignment);
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return size;
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}
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case NubPointerType:
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case NubArrayType:
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case NubCStringType:
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case NubStringType:
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case NubFuncType:
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{
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return 8;
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}
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default:
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{
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throw new ArgumentOutOfRangeException();
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}
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}
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}
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private static int OffsetOf(BoundStructDefinitionNode structDefinition, string member)
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{
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var offset = 0;
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foreach (var field in structDefinition.Fields)
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{
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if (field.Name == member)
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{
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return offset;
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}
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var fieldAlignment = AlignmentOf(field.Type);
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offset = AlignTo(offset, fieldAlignment);
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offset += SizeOf(field.Type);
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}
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throw new UnreachableException($"Member '{member}' not found in struct");
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}
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private static void EmitFuncDefinition(string name, List<BoundFuncParameter> parameters, NubType returnType, BoundBlockNode body, bool exported)
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{
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_variables.Clear();
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_variableScopes.Clear();
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if (exported)
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{
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_builder.Append("export ");
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}
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_builder.Append("function ");
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if (returnType is not NubVoidType)
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{
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_builder.Append(returnType switch
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{
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NubArrayType => "l",
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NubPointerType => "l",
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NubPrimitiveType primitiveType => primitiveType.Kind switch
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{
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PrimitiveTypeKind.I64 => "l",
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PrimitiveTypeKind.I32 => "w",
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PrimitiveTypeKind.I16 => "sh",
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PrimitiveTypeKind.I8 => "sb",
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PrimitiveTypeKind.U64 => "l",
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PrimitiveTypeKind.U32 => "w",
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PrimitiveTypeKind.U16 => "uh",
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PrimitiveTypeKind.U8 => "ub",
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PrimitiveTypeKind.F64 => "d",
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PrimitiveTypeKind.F32 => "s",
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PrimitiveTypeKind.Bool => "w",
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_ => throw new ArgumentOutOfRangeException()
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},
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NubStructType structType => StructName(_definitionTable.LookupStruct(structType.Namespace, structType.Name).GetValue()),
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NubFuncType => "l",
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NubCStringType => "l",
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NubStringType => "l",
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_ => throw new NotSupportedException($"'{returnType}' type cannot be used as a function return type")
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});
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_builder.Append(' ');
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}
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_builder.Append(name);
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var parameterStrings = parameters.Select(parameter =>
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{
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var qbeType = parameter.Type switch
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{
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NubArrayType => "l",
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NubPointerType => "l",
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NubPrimitiveType primitiveType => primitiveType.Kind switch
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{
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PrimitiveTypeKind.I64 => "l",
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PrimitiveTypeKind.I32 => "w",
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PrimitiveTypeKind.I16 => "sh",
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PrimitiveTypeKind.I8 => "sb",
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PrimitiveTypeKind.U64 => "l",
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PrimitiveTypeKind.U32 => "w",
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PrimitiveTypeKind.U16 => "uh",
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PrimitiveTypeKind.U8 => "ub",
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PrimitiveTypeKind.F64 => "d",
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PrimitiveTypeKind.F32 => "s",
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PrimitiveTypeKind.Bool => "w",
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_ => throw new ArgumentOutOfRangeException()
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},
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NubStructType structType => StructName(_definitionTable.LookupStruct(structType.Namespace, structType.Name).GetValue()),
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NubFuncType => "l",
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NubCStringType => "l",
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NubStringType => "l",
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_ => throw new NotSupportedException($"'{parameter.Type}' type cannot be used as a function parameter type")
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};
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return $"{qbeType} %{parameter.Name}";
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});
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|
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_builder.AppendLine($"({string.Join(", ", parameterStrings)}) {{");
|
|
_builder.AppendLine("@start");
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|
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List<Variable> parameterVars = [];
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|
|
foreach (var parameter in parameters)
|
|
{
|
|
var parameterName = "%" + parameter.Name;
|
|
|
|
if (parameter.Type is NubPrimitiveType primitiveType)
|
|
{
|
|
switch (primitiveType.Kind)
|
|
{
|
|
case PrimitiveTypeKind.I16:
|
|
parameterName = VarName();
|
|
_builder.AppendLine($" {parameterName} =w extsh %{parameter.Name}");
|
|
break;
|
|
case PrimitiveTypeKind.I8:
|
|
parameterName = VarName();
|
|
_builder.AppendLine($" {parameterName} =w extsb %{parameter.Name}");
|
|
break;
|
|
case PrimitiveTypeKind.U16:
|
|
parameterName = VarName();
|
|
_builder.AppendLine($" {parameterName} =w extuh %{parameter.Name}");
|
|
break;
|
|
case PrimitiveTypeKind.U8:
|
|
parameterName = VarName();
|
|
_builder.AppendLine($" {parameterName} =w extub %{parameter.Name}");
|
|
break;
|
|
}
|
|
}
|
|
|
|
parameterVars.Add(new Variable(parameter.Name, new Val(parameterName, parameter.Type, ValKind.Direct)));
|
|
}
|
|
|
|
EmitBlock(body, parameterVars);
|
|
|
|
if (body.Statements.LastOrDefault() is not BoundReturnNode)
|
|
{
|
|
if (returnType is NubVoidType)
|
|
{
|
|
_builder.AppendLine(" ret");
|
|
}
|
|
}
|
|
|
|
_builder.AppendLine("}");
|
|
}
|
|
|
|
private static void EmitStructDefinition(BoundStructDefinitionNode structDefinition)
|
|
{
|
|
_builder.Append($"type {StructName(structDefinition)} = {{ ");
|
|
foreach (var structDefinitionField in structDefinition.Fields)
|
|
{
|
|
var qbeType = structDefinitionField.Type switch
|
|
{
|
|
NubArrayType => "l",
|
|
NubPointerType => "l",
|
|
NubPrimitiveType primitiveType => primitiveType.Kind switch
|
|
{
|
|
PrimitiveTypeKind.I64 => "l",
|
|
PrimitiveTypeKind.I32 => "w",
|
|
PrimitiveTypeKind.I16 => "h",
|
|
PrimitiveTypeKind.I8 => "b",
|
|
PrimitiveTypeKind.U64 => "l",
|
|
PrimitiveTypeKind.U32 => "w",
|
|
PrimitiveTypeKind.U16 => "h",
|
|
PrimitiveTypeKind.U8 => "b",
|
|
PrimitiveTypeKind.F64 => "d",
|
|
PrimitiveTypeKind.F32 => "s",
|
|
PrimitiveTypeKind.Bool => "w",
|
|
_ => throw new ArgumentOutOfRangeException()
|
|
},
|
|
NubStructType structType => StructName(_definitionTable.LookupStruct(structType.Namespace, structType.Name).GetValue()),
|
|
NubFuncType => "l",
|
|
NubCStringType => "l",
|
|
NubStringType => "l",
|
|
_ => throw new NotSupportedException($"'{structDefinitionField.Type}' type cannot be used in structs")
|
|
};
|
|
_builder.Append(qbeType + ", ");
|
|
}
|
|
|
|
_builder.AppendLine("}");
|
|
}
|
|
|
|
private static void EmitStatement(BoundStatementNode statement)
|
|
{
|
|
switch (statement)
|
|
{
|
|
case BoundAssignmentNode assignment:
|
|
EmitAssignment(assignment);
|
|
break;
|
|
case BoundBreakNode:
|
|
EmitBreak();
|
|
break;
|
|
case BoundContinueNode:
|
|
EmitContinue();
|
|
break;
|
|
case BoundIfNode ifStatement:
|
|
EmitIf(ifStatement);
|
|
break;
|
|
case BoundReturnNode @return:
|
|
EmitReturn(@return);
|
|
break;
|
|
case BoundStatementExpressionNode statementExpression:
|
|
EmitExpression(statementExpression.Expression);
|
|
break;
|
|
case BoundVariableDeclarationNode variableDeclaration:
|
|
EmitVariableDeclaration(variableDeclaration);
|
|
break;
|
|
case BoundWhileNode whileStatement:
|
|
EmitWhile(whileStatement);
|
|
break;
|
|
default:
|
|
throw new ArgumentOutOfRangeException(nameof(statement));
|
|
}
|
|
}
|
|
|
|
private static void EmitAssignment(BoundAssignmentNode assignment)
|
|
{
|
|
var destination = EmitExpression(assignment.Expression);
|
|
Debug.Assert(destination.Kind == ValKind.Pointer);
|
|
|
|
var source = EmitUnwrap(EmitExpression(assignment.Value));
|
|
EmitCopyInto(assignment.Value.Type, source, destination.Name);
|
|
}
|
|
|
|
private static void EmitBlock(BoundBlockNode block, List<Variable>? variables = null)
|
|
{
|
|
_variableScopes.Push(_variables.Count);
|
|
if (variables != null)
|
|
{
|
|
foreach (var variable in variables)
|
|
{
|
|
_variables.Push(variable);
|
|
}
|
|
}
|
|
|
|
foreach (var statement in block.Statements.Where(_ => _codeIsReachable))
|
|
{
|
|
EmitStatement(statement);
|
|
}
|
|
|
|
var count = _variableScopes.Pop();
|
|
while (_variableScopes.Count > count)
|
|
{
|
|
_variableScopes.Pop();
|
|
}
|
|
|
|
_codeIsReachable = true;
|
|
}
|
|
|
|
private static void EmitBreak()
|
|
{
|
|
_builder.AppendLine($" jmp {_breakLabels.Peek()}");
|
|
_codeIsReachable = false;
|
|
}
|
|
|
|
private static void EmitContinue()
|
|
{
|
|
_builder.AppendLine($" jmp {_continueLabels.Peek()}");
|
|
_codeIsReachable = false;
|
|
}
|
|
|
|
private static void EmitIf(BoundIfNode ifStatement)
|
|
{
|
|
var trueLabel = LabelName();
|
|
var falseLabel = LabelName();
|
|
var endLabel = LabelName();
|
|
|
|
var result = EmitUnwrap(EmitExpression(ifStatement.Condition));
|
|
_builder.AppendLine($" jnz {result}, {trueLabel}, {falseLabel}");
|
|
_builder.AppendLine(trueLabel);
|
|
EmitBlock(ifStatement.Body);
|
|
_builder.AppendLine($" jmp {endLabel}");
|
|
_builder.AppendLine(falseLabel);
|
|
if (ifStatement.Else.HasValue)
|
|
{
|
|
ifStatement.Else.Value.Match
|
|
(
|
|
elseIfNode => EmitIf(elseIfNode),
|
|
elseNode => EmitBlock(elseNode)
|
|
);
|
|
}
|
|
|
|
_builder.AppendLine(endLabel);
|
|
}
|
|
|
|
private static void EmitReturn(BoundReturnNode @return)
|
|
{
|
|
if (@return.Value.HasValue)
|
|
{
|
|
var result = EmitUnwrap(EmitExpression(@return.Value.Value));
|
|
_builder.AppendLine($" ret {result}");
|
|
}
|
|
else
|
|
{
|
|
_builder.AppendLine(" ret");
|
|
}
|
|
}
|
|
|
|
private static void EmitVariableDeclaration(BoundVariableDeclarationNode variableDeclaration)
|
|
{
|
|
var tmp = VarName();
|
|
_builder.AppendLine($" {tmp} =l alloc8 {SizeOf(variableDeclaration.Type)}");
|
|
_variables.Push(new Variable(variableDeclaration.Name, new Val(tmp, variableDeclaration.Type, ValKind.Pointer)));
|
|
}
|
|
|
|
private static void EmitWhile(BoundWhileNode whileStatement)
|
|
{
|
|
var conditionLabel = LabelName();
|
|
var iterationLabel = LabelName();
|
|
var endLabel = LabelName();
|
|
|
|
_breakLabels.Push(endLabel);
|
|
_continueLabels.Push(conditionLabel);
|
|
|
|
_builder.AppendLine($" jmp {conditionLabel}");
|
|
_builder.AppendLine(iterationLabel);
|
|
EmitBlock(whileStatement.Body);
|
|
_builder.AppendLine(conditionLabel);
|
|
var result = EmitUnwrap(EmitExpression(whileStatement.Condition));
|
|
_builder.AppendLine($" jnz {result}, {iterationLabel}, {endLabel}");
|
|
_builder.AppendLine(endLabel);
|
|
|
|
_continueLabels.Pop();
|
|
_breakLabels.Pop();
|
|
}
|
|
|
|
private static Val EmitExpression(BoundExpressionNode expression)
|
|
{
|
|
return expression switch
|
|
{
|
|
BoundAddressOfNode addressOf => EmitAddressOf(addressOf),
|
|
BoundAnonymousFuncNode anonymousFunc => EmitAnonymousFunc(anonymousFunc),
|
|
BoundArrayIndexAccessNode arrayIndex => EmitArrayIndexAccess(arrayIndex),
|
|
BoundArrayInitializerNode arrayInitializer => EmitArrayInitializer(arrayInitializer),
|
|
BoundBinaryExpressionNode binaryExpression => EmitBinaryExpression(binaryExpression),
|
|
BoundDereferenceNode dereference => EmitDereference(dereference),
|
|
BoundFuncCallNode funcCallExpression => EmitFuncCall(funcCallExpression),
|
|
BoundIdentifierNode identifier => EmitIdentifier(identifier),
|
|
BoundLiteralNode literal => EmitLiteral(literal),
|
|
BoundStructInitializerNode structInitializer => EmitStructInitializer(structInitializer),
|
|
BoundUnaryExpressionNode unaryExpression => EmitUnaryExpression(unaryExpression),
|
|
BoundMemberAccessNode memberAccess => EmitMemberAccess(memberAccess),
|
|
_ => throw new ArgumentOutOfRangeException(nameof(expression))
|
|
};
|
|
}
|
|
|
|
private static Val EmitAnonymousFunc(BoundAnonymousFuncNode anonymousFunc)
|
|
{
|
|
var name = $"$anon_func{++_anonymousFuncIndex}";
|
|
_anonymousFunctions.Enqueue((anonymousFunc, name));
|
|
return new Val(name, anonymousFunc.Type, ValKind.Direct);
|
|
}
|
|
|
|
private static Val EmitArrayIndexAccess(BoundArrayIndexAccessNode arrayIndexAccess)
|
|
{
|
|
var array = EmitUnwrap(EmitExpression(arrayIndexAccess.Array));
|
|
var index = EmitUnwrap(EmitExpression(arrayIndexAccess.Index));
|
|
|
|
var elementType = ((NubArrayType)arrayIndexAccess.Array.Type).ElementType;
|
|
|
|
var pointer = VarName();
|
|
_builder.AppendLine($" {pointer} =l mul {index}, {SizeOf(elementType)}");
|
|
_builder.AppendLine($" {pointer} =l add {pointer}, 8");
|
|
_builder.AppendLine($" {pointer} =l add {array}, {pointer}");
|
|
return new Val(pointer, arrayIndexAccess.Type, ValKind.Pointer);
|
|
}
|
|
|
|
private static void EmitArrayBoundsCheck(string array, string index)
|
|
{
|
|
var count = VarName();
|
|
_builder.AppendLine($" {count} =l loadl {array}");
|
|
|
|
var isNegative = VarName();
|
|
_builder.AppendLine($" {isNegative} =w csltl {index}, 0");
|
|
|
|
var isOob = VarName();
|
|
_builder.AppendLine($" {isOob} =w csgel {index}, {count}");
|
|
|
|
var anyOob = VarName();
|
|
_builder.AppendLine($" {anyOob} =w or {isNegative}, {isOob}");
|
|
|
|
var oobLabel = LabelName();
|
|
var notOobLabel = LabelName();
|
|
_builder.AppendLine($" jnz {anyOob}, {oobLabel}, {notOobLabel}");
|
|
|
|
_builder.AppendLine(oobLabel);
|
|
_builder.AppendLine($" call $nub_panic_array_oob()");
|
|
|
|
_builder.AppendLine(notOobLabel);
|
|
}
|
|
|
|
private static Val EmitArrayInitializer(BoundArrayInitializerNode arrayInitializer)
|
|
{
|
|
var capacity = EmitUnwrap(EmitExpression(arrayInitializer.Capacity));
|
|
var elementSize = SizeOf(arrayInitializer.ElementType);
|
|
|
|
var capacityInBytes = VarName();
|
|
_builder.AppendLine($" {capacityInBytes} =l mul {capacity}, {elementSize}");
|
|
var totalSize = VarName();
|
|
_builder.AppendLine($" {totalSize} =l add {capacityInBytes}, 8");
|
|
|
|
var arrayPointer = VarName();
|
|
_builder.AppendLine($" {arrayPointer} =l alloc8 {totalSize}");
|
|
_builder.AppendLine($" storel {capacity}, {arrayPointer}");
|
|
|
|
var dataPointer = VarName();
|
|
_builder.AppendLine($" {dataPointer} =l add {arrayPointer}, 8");
|
|
_builder.AppendLine($" call $nub_memset(l {dataPointer}, w 0, l {capacityInBytes})");
|
|
|
|
return new Val(arrayPointer, arrayInitializer.Type, ValKind.Direct);
|
|
}
|
|
|
|
private static Val EmitDereference(BoundDereferenceNode dereference)
|
|
{
|
|
var result = EmitUnwrap(EmitExpression(dereference.Expression));
|
|
return EmitLoad(dereference.Type, result);
|
|
}
|
|
|
|
private static Val EmitAddressOf(BoundAddressOfNode addressOf)
|
|
{
|
|
throw new NotImplementedException();
|
|
}
|
|
|
|
private static Val EmitBinaryExpression(BoundBinaryExpressionNode binaryExpression)
|
|
{
|
|
var left = EmitUnwrap(EmitExpression(binaryExpression.Left));
|
|
var right = EmitUnwrap(EmitExpression(binaryExpression.Right));
|
|
var outputName = VarName();
|
|
var output = new Val(outputName, binaryExpression.Type, ValKind.Direct);
|
|
|
|
switch (binaryExpression.Operator)
|
|
{
|
|
case BinaryExpressionOperator.Equal:
|
|
{
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I64))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w ceql {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I32))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w ceqw {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.Bool))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w ceqw {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case BinaryExpressionOperator.NotEqual:
|
|
{
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I64))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w cnel {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I32))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w cnew {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.Bool))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w cnew {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case BinaryExpressionOperator.GreaterThan:
|
|
{
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I64))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w csgtl {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I32))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w csgtw {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.Bool))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w csgtw {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case BinaryExpressionOperator.GreaterThanOrEqual:
|
|
{
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I64))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w csgel {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I32))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w csgew {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.Bool))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w csgew {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case BinaryExpressionOperator.LessThan:
|
|
{
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I64))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w csltl {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I32))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w csltw {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.Bool))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w csltw {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case BinaryExpressionOperator.LessThanOrEqual:
|
|
{
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I64))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w cslel {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I32))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w cslew {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.Bool))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w cslew {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case BinaryExpressionOperator.Plus:
|
|
{
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I64))
|
|
{
|
|
_builder.AppendLine($" {outputName} =l add {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I32))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w add {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case BinaryExpressionOperator.Minus:
|
|
{
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I64))
|
|
{
|
|
_builder.AppendLine($" {outputName} =l sub {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I32))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w sub {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case BinaryExpressionOperator.Multiply:
|
|
{
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I64))
|
|
{
|
|
_builder.AppendLine($" {outputName} =l mul {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I32))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w mul {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case BinaryExpressionOperator.Divide:
|
|
{
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I64))
|
|
{
|
|
_builder.AppendLine($" {outputName} =l div {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I32))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w div {left}, {right}");
|
|
return output;
|
|
}
|
|
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
throw new ArgumentOutOfRangeException();
|
|
}
|
|
}
|
|
|
|
throw new NotSupportedException($"Binary operator {binaryExpression.Operator} for types {binaryExpression.Left.Type} and {binaryExpression.Right.Type} not supported");
|
|
}
|
|
|
|
private static Val EmitIdentifier(BoundIdentifierNode identifier)
|
|
{
|
|
if (_definitionTable.LookupFunc(identifier.Namespace.Or(_syntaxTree.Namespace), identifier.Name).TryGetValue(out var func))
|
|
{
|
|
return new Val(FuncName(func), identifier.Type, ValKind.Direct);
|
|
}
|
|
|
|
if (!identifier.Namespace.HasValue)
|
|
{
|
|
return _variables.Single(v => v.Name == identifier.Name).Val;
|
|
}
|
|
|
|
throw new UnreachableException();
|
|
}
|
|
|
|
private static Val EmitLiteral(BoundLiteralNode literal)
|
|
{
|
|
switch (literal.Kind)
|
|
{
|
|
case LiteralKind.Integer:
|
|
{
|
|
if (literal.Type.IsFloat32)
|
|
{
|
|
var value = float.Parse(literal.Literal, CultureInfo.InvariantCulture);
|
|
var bits = BitConverter.SingleToInt32Bits(value);
|
|
return new Val(bits.ToString(), literal.Type, ValKind.Direct);
|
|
}
|
|
|
|
if (literal.Type.IsFloat64)
|
|
{
|
|
var value = double.Parse(literal.Literal, CultureInfo.InvariantCulture);
|
|
var bits = BitConverter.DoubleToInt64Bits(value);
|
|
return new Val(bits.ToString(), literal.Type, ValKind.Direct);
|
|
}
|
|
|
|
if (literal.Type.IsInteger)
|
|
{
|
|
return new Val(literal.Literal, literal.Type, ValKind.Direct);
|
|
}
|
|
|
|
break;
|
|
}
|
|
case LiteralKind.Float:
|
|
{
|
|
if (literal.Type.IsInteger)
|
|
{
|
|
return new Val(literal.Literal.Split(".").First(), literal.Type, ValKind.Direct);
|
|
}
|
|
|
|
if (literal.Type.IsFloat32)
|
|
{
|
|
var value = float.Parse(literal.Literal, CultureInfo.InvariantCulture);
|
|
var bits = BitConverter.SingleToInt32Bits(value);
|
|
return new Val(bits.ToString(), literal.Type, ValKind.Direct);
|
|
}
|
|
|
|
if (literal.Type.IsFloat64)
|
|
{
|
|
var value = double.Parse(literal.Literal, CultureInfo.InvariantCulture);
|
|
var bits = BitConverter.DoubleToInt64Bits(value);
|
|
return new Val(bits.ToString(), literal.Type, ValKind.Direct);
|
|
}
|
|
|
|
break;
|
|
}
|
|
case LiteralKind.String:
|
|
{
|
|
if (literal.Type.IsString)
|
|
{
|
|
var stringLiteral = new StringLiteral(literal.Literal, StringName());
|
|
_stringLiterals.Add(stringLiteral);
|
|
return new Val(stringLiteral.Name, literal.Type, ValKind.Direct);
|
|
}
|
|
|
|
if (literal.Type.IsCString)
|
|
{
|
|
var cStringLiteral = new CStringLiteral(literal.Literal, CStringName());
|
|
_cStringLiterals.Add(cStringLiteral);
|
|
return new Val(cStringLiteral.Name, literal.Type, ValKind.Direct);
|
|
}
|
|
|
|
break;
|
|
}
|
|
case LiteralKind.Bool:
|
|
{
|
|
if (literal.Type.IsBool)
|
|
{
|
|
return new Val(bool.Parse(literal.Literal) ? "1" : "0", literal.Type, ValKind.Direct);
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
throw new NotSupportedException($"Cannot create literal of kind '{literal.Kind}' for type {literal.Type}");
|
|
}
|
|
|
|
private static Val EmitStructInitializer(BoundStructInitializerNode structInitializer)
|
|
{
|
|
var structDefinition = _definitionTable.LookupStruct(structInitializer.StructType.Namespace, structInitializer.StructType.Name).GetValue();
|
|
|
|
var output = VarName();
|
|
var size = SizeOf(structInitializer.StructType);
|
|
_builder.AppendLine($" {output} =l alloc8 {size}");
|
|
|
|
foreach (var field in structDefinition.Fields)
|
|
{
|
|
var offset = OffsetOf(structDefinition, field.Name);
|
|
|
|
if (!structInitializer.Initializers.TryGetValue(field.Name, out var valueExpression))
|
|
{
|
|
valueExpression = field.Value.Value;
|
|
}
|
|
|
|
Debug.Assert(valueExpression != null);
|
|
|
|
var destination = VarName();
|
|
_builder.AppendLine($" {destination} =l add {output}, {offset}");
|
|
var source = EmitUnwrap(EmitExpression(valueExpression));
|
|
EmitCopyInto(valueExpression.Type, source, destination);
|
|
}
|
|
|
|
return new Val(output, structInitializer.StructType, ValKind.Direct);
|
|
}
|
|
|
|
private static Val EmitUnaryExpression(BoundUnaryExpressionNode unaryExpression)
|
|
{
|
|
var operand = EmitUnwrap(EmitExpression(unaryExpression.Operand));
|
|
var outputName = VarName();
|
|
|
|
switch (unaryExpression.Operator)
|
|
{
|
|
case UnaryExpressionOperator.Negate:
|
|
{
|
|
switch (unaryExpression.Operand.Type)
|
|
{
|
|
case NubPrimitiveType { Kind: PrimitiveTypeKind.I64 }:
|
|
_builder.AppendLine($" {outputName} =l neg {operand}");
|
|
return new Val(outputName, unaryExpression.Type, ValKind.Direct);
|
|
case NubPrimitiveType { Kind: PrimitiveTypeKind.I32 or PrimitiveTypeKind.I16 or PrimitiveTypeKind.I8 }:
|
|
_builder.AppendLine($" {outputName} =w neg {operand}");
|
|
return new Val(outputName, unaryExpression.Type, ValKind.Direct);
|
|
case NubPrimitiveType { Kind: PrimitiveTypeKind.F64 }:
|
|
_builder.AppendLine($" {outputName} =d neg {operand}");
|
|
return new Val(outputName, unaryExpression.Type, ValKind.Direct);
|
|
case NubPrimitiveType { Kind: PrimitiveTypeKind.F32 }:
|
|
_builder.AppendLine($" {outputName} =s neg {operand}");
|
|
return new Val(outputName, unaryExpression.Type, ValKind.Direct);
|
|
}
|
|
|
|
break;
|
|
}
|
|
case UnaryExpressionOperator.Invert:
|
|
{
|
|
switch (unaryExpression.Operand.Type)
|
|
{
|
|
case NubPrimitiveType { Kind: PrimitiveTypeKind.Bool }:
|
|
_builder.AppendLine($" {outputName} =w xor {operand}, 1");
|
|
return new Val(outputName, unaryExpression.Type, ValKind.Direct);
|
|
}
|
|
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
throw new ArgumentOutOfRangeException();
|
|
}
|
|
}
|
|
|
|
throw new NotSupportedException($"Unary operator {unaryExpression.Operator} for type {unaryExpression.Operand.Type} not supported");
|
|
}
|
|
|
|
private static Val EmitMemberAccess(BoundMemberAccessNode memberAccess)
|
|
{
|
|
var item = EmitUnwrap(EmitExpression(memberAccess.Expression));
|
|
var output = VarName();
|
|
|
|
switch (memberAccess.Expression.Type)
|
|
{
|
|
case NubArrayType:
|
|
{
|
|
if (memberAccess.Member == "count")
|
|
{
|
|
_builder.AppendLine($" {output} =l loadl {item}");
|
|
return new Val(output, memberAccess.Type, ValKind.Direct);
|
|
}
|
|
|
|
break;
|
|
}
|
|
case NubStringType:
|
|
{
|
|
if (memberAccess.Member == "count")
|
|
{
|
|
_builder.AppendLine($" {output} =l call $nub_string_length(l {item})");
|
|
return new Val(output, memberAccess.Type, ValKind.Direct);
|
|
}
|
|
|
|
break;
|
|
}
|
|
case NubCStringType:
|
|
{
|
|
if (memberAccess.Member == "count")
|
|
{
|
|
_builder.AppendLine($" {output} =l call $nub_cstring_length(l {item})");
|
|
return new Val(output, memberAccess.Type, ValKind.Direct);
|
|
}
|
|
|
|
break;
|
|
}
|
|
case NubStructType structType:
|
|
{
|
|
var structDefinition = _definitionTable.LookupStruct(structType.Namespace, structType.Name).GetValue();
|
|
var offset = OffsetOf(structDefinition, memberAccess.Member);
|
|
|
|
_builder.AppendLine($" {output} =l add {item}, {offset}");
|
|
return new Val(output, memberAccess.Type, ValKind.Pointer);
|
|
}
|
|
}
|
|
|
|
throw new UnreachableException();
|
|
}
|
|
|
|
private static Val EmitFuncCall(BoundFuncCallNode funcCall)
|
|
{
|
|
var funcType = (NubFuncType)funcCall.Expression.Type;
|
|
|
|
var parameterStrings = new List<string>();
|
|
|
|
foreach (var parameter in funcCall.Parameters)
|
|
{
|
|
var result = EmitUnwrap(EmitExpression(parameter));
|
|
var copy = EmitCopy(parameter.Type, result);
|
|
|
|
var qbeType = parameter.Type switch
|
|
{
|
|
NubArrayType => "l",
|
|
NubPointerType => "l",
|
|
NubPrimitiveType pointerType => pointerType.Kind switch
|
|
{
|
|
PrimitiveTypeKind.I64 => "l",
|
|
PrimitiveTypeKind.I32 => "w",
|
|
PrimitiveTypeKind.I16 => "sh",
|
|
PrimitiveTypeKind.I8 => "sb",
|
|
PrimitiveTypeKind.U64 => "l",
|
|
PrimitiveTypeKind.U32 => "w",
|
|
PrimitiveTypeKind.U16 => "uh",
|
|
PrimitiveTypeKind.U8 => "ub",
|
|
PrimitiveTypeKind.F64 => "d",
|
|
PrimitiveTypeKind.F32 => "s",
|
|
PrimitiveTypeKind.Bool => "w",
|
|
_ => throw new ArgumentOutOfRangeException()
|
|
},
|
|
NubStructType structType => StructName(_definitionTable.LookupStruct(structType.Namespace, structType.Name).GetValue()),
|
|
NubFuncType => "l",
|
|
NubCStringType => "l",
|
|
NubStringType => "l",
|
|
_ => throw new NotSupportedException($"'{parameter.Type}' type cannot be used in function calls")
|
|
};
|
|
|
|
parameterStrings.Add($"{qbeType} {copy}");
|
|
}
|
|
|
|
var funcPointer = EmitUnwrap(EmitExpression(funcCall.Expression));
|
|
|
|
if (funcType.ReturnType is not NubVoidType)
|
|
{
|
|
var outputName = VarName();
|
|
|
|
_builder.AppendLine($" {outputName} {QBEAssign(funcCall.Type)} call {funcPointer}({string.Join(", ", parameterStrings)})");
|
|
return new Val(outputName, funcCall.Type, ValKind.Direct);
|
|
}
|
|
else
|
|
{
|
|
_builder.AppendLine($" call {funcPointer}({string.Join(", ", parameterStrings)})");
|
|
return new Val(string.Empty, funcCall.Type, ValKind.Direct);
|
|
}
|
|
}
|
|
|
|
private static string EmitUnwrap(Val val)
|
|
{
|
|
if (val.Type.IsVoid)
|
|
{
|
|
throw new InvalidOperationException("Cannot unwrap temporary of void type");
|
|
}
|
|
|
|
switch (val.Kind)
|
|
{
|
|
case ValKind.Direct:
|
|
{
|
|
return val.Name;
|
|
}
|
|
case ValKind.Pointer:
|
|
{
|
|
if (val.Type is NubStructType)
|
|
{
|
|
return val.Name;
|
|
}
|
|
|
|
return EmitLoad(val.Type, val.Name).Name;
|
|
}
|
|
default:
|
|
{
|
|
throw new ArgumentOutOfRangeException();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
internal class StringLiteral(string value, string name)
|
|
{
|
|
public string Value { get; } = value;
|
|
public string Name { get; } = name;
|
|
}
|
|
|
|
internal class CStringLiteral(string value, string name)
|
|
{
|
|
public string Value { get; } = value;
|
|
public string Name { get; } = name;
|
|
}
|
|
|
|
internal class Variable(string name, Val val)
|
|
{
|
|
public string Name { get; } = name;
|
|
public Val Val { get; } = val;
|
|
}
|
|
|
|
internal class Val(string name, NubType type, ValKind kind)
|
|
{
|
|
public string Name { get; } = name;
|
|
public NubType Type { get; } = type;
|
|
public ValKind Kind { get; } = kind;
|
|
|
|
public override string ToString()
|
|
{
|
|
throw new InvalidOperationException();
|
|
}
|
|
}
|
|
|
|
internal enum ValKind
|
|
{
|
|
Pointer,
|
|
Direct,
|
|
} |