1345 lines
49 KiB
C#
1345 lines
49 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;
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using Syntax.Parsing.Definitions;
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using Syntax.Parsing.Expressions;
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using Syntax.Parsing.Statements;
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using Syntax.Tokenization;
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using Syntax.Typing;
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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 CompilationUnit _compilationUnit = null!;
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private static DefinitionTable _definitionTable = null!;
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private static StringBuilder _builder = new();
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private static List<string> _strings = [];
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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<(AnonymousFuncNode 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 bool _codeIsReachable = true;
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public static string Generate(CompilationUnit compilationUnit, DefinitionTable definitionTable)
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{
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_compilationUnit = compilationUnit;
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_definitionTable = definitionTable;
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_builder = new StringBuilder();
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_strings = [];
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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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_codeIsReachable = true;
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foreach (var structDef in _definitionTable.GetStructs())
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{
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GenerateStructDefinition(structDef);
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_builder.AppendLine();
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}
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foreach (var funcDef in _compilationUnit.Definitions.OfType<LocalFuncDefinitionNode>())
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{
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GenerateFuncDefinition(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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GenerateFuncDefinition(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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for (var i = 0; i < _strings.Count; i++)
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{
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_builder.AppendLine($"data $string{i + 1} = {{ b \"{_strings[i]}\", b 0 }}");
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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 FuncName(IFuncSignature funcDef)
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{
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return funcDef switch
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{
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ExternFuncDefinitionNode externFuncDefinition => $"${externFuncDefinition.CallName}",
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LocalFuncDefinitionNode 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(StructDefinitionNode structDef)
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{
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return $":{structDef.Namespace}_{structDef.Name}";
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}
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private static string QBEStore(NubType type)
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{
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return 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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NubFixedArrayType => "storel",
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NubFuncType => "storel",
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_ => throw new NotSupportedException($"'{type}' type cannot be used in store instructions")
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};
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}
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private static string QBELoad(NubType type)
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{
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return 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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NubFixedArrayType => "loadl",
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NubFuncType => "loadl",
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_ => throw new NotSupportedException($"'{type}' type cannot be used in load instructions")
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};
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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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NubFixedArrayType => "=l",
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NubFuncType => "=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 NubFuncType:
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{
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return 8;
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}
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case NubFixedArrayType nubFixedArrayType:
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{
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return AlignmentOf(nubFixedArrayType.ElementType);
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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 => 8,
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PrimitiveTypeKind.I32 or PrimitiveTypeKind.U32 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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PrimitiveTypeKind.F64 => 8,
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PrimitiveTypeKind.F32 => 4,
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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 NubFuncType:
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{
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return 8;
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}
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case NubFixedArrayType nubFixedArrayType:
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{
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return SizeOf(nubFixedArrayType.ElementType) * nubFixedArrayType.Capacity + 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(StructDefinitionNode 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 bool IsPointerType(NubType type)
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{
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return type switch
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{
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NubPointerType => false,
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NubPrimitiveType => false,
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NubStructType => true,
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NubArrayType => true,
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NubFixedArrayType => true,
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NubFuncType => false,
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_ => throw new ArgumentOutOfRangeException(nameof(type))
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};
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}
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private static void GenerateFuncDefinition(string name, List<FuncParameter> parameters, NubType returnType, BlockNode 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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NubFixedArrayType => "l",
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NubFuncType => "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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NubFixedArrayType => "l",
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NubFuncType => "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 $"{qbeType} %{parameter.Name}";
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});
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_builder.AppendLine($"({string.Join(", ", parameterStrings)}) {{");
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_builder.AppendLine("@start");
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List<Variable> parameterVars = [];
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foreach (var parameter in parameters)
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{
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var parameterName = "%" + parameter.Name;
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if (parameter.Type is NubPrimitiveType primitiveType)
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{
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switch (primitiveType.Kind)
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{
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case PrimitiveTypeKind.I16:
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parameterName = VarName();
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_builder.AppendLine($" {parameterName} =w extsh %{parameter.Name}");
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break;
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case PrimitiveTypeKind.I8:
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parameterName = VarName();
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_builder.AppendLine($" {parameterName} =w extsb %{parameter.Name}");
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break;
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case PrimitiveTypeKind.U16:
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parameterName = VarName();
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_builder.AppendLine($" {parameterName} =w extuh %{parameter.Name}");
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break;
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case PrimitiveTypeKind.U8:
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parameterName = VarName();
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_builder.AppendLine($" {parameterName} =w extub %{parameter.Name}");
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break;
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}
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}
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parameterVars.Add(new Variable(parameter.Name, parameterName).Assign());
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}
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GenerateBlock(body, parameterVars);
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if (body.Statements.LastOrDefault() is not ReturnNode)
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{
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if (returnType is NubVoidType)
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{
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_builder.AppendLine(" ret");
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}
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}
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_builder.AppendLine("}");
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}
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private static void GenerateStructDefinition(StructDefinitionNode structDefinition)
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{
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_builder.Append($"type {StructName(structDefinition)} = {{ ");
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foreach (var structDefinitionField in structDefinition.Fields)
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{
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var qbeType = structDefinitionField.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 => "h",
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PrimitiveTypeKind.I8 => "b",
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PrimitiveTypeKind.U64 => "l",
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PrimitiveTypeKind.U32 => "w",
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PrimitiveTypeKind.U16 => "h",
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PrimitiveTypeKind.U8 => "b",
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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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NubFixedArrayType fixedArrayType => $"b {SizeOf(fixedArrayType)}",
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NubFuncType => "l",
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_ => throw new NotSupportedException($"'{structDefinitionField.Type}' type cannot be used in structs")
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};
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_builder.Append(qbeType + ", ");
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}
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_builder.AppendLine("}");
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}
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private static void GenerateStatement(StatementNode statement)
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{
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switch (statement)
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{
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case ArrayIndexAssignmentNode arrayIndexAssignment:
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GenerateArrayIndexAssignment(arrayIndexAssignment);
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break;
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case BreakNode:
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GenerateBreak();
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break;
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case ContinueNode:
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GenerateContinue();
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break;
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case DereferenceAssignmentNode dereferenceAssignment:
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GenerateDereferenceAssignment(dereferenceAssignment);
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break;
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case IfNode ifStatement:
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GenerateIf(ifStatement);
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break;
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case MemberAssignmentNode memberAssignment:
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GenerateMemberAssignment(memberAssignment);
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break;
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case ReturnNode @return:
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GenerateReturn(@return);
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break;
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case StatementExpressionNode statementExpression:
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GenerateExpression(statementExpression.Expression);
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break;
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case VariableAssignmentNode variableAssignment:
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GenerateVariableAssignment(variableAssignment);
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break;
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case VariableDeclarationNode variableDeclaration:
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GenerateVariableDeclaration(variableDeclaration);
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break;
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case WhileNode whileStatement:
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GenerateWhile(whileStatement);
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break;
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default:
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throw new ArgumentOutOfRangeException(nameof(statement));
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}
|
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}
|
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private static void GenerateArrayIndexAssignment(ArrayIndexAssignmentNode arrayIndexAssignment)
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{
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var array = GenerateExpression(arrayIndexAssignment.ArrayIndexAccess.Array);
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var index = GenerateExpression(arrayIndexAssignment.ArrayIndexAccess.Index);
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GenerateArrayBoundsCheck(array, index);
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var value = GenerateExpression(arrayIndexAssignment.Value);
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switch (arrayIndexAssignment.ArrayIndexAccess.Array.Type)
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{
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case NubArrayType arrayType:
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{
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var startName = VarName();
|
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_builder.AppendLine($" {startName} =l add {array}, 8");
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var adjustedIndex = VarName();
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_builder.AppendLine($" {adjustedIndex} =l mul {index}, {SizeOf(arrayType.ElementType)}");
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var pointer = VarName();
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_builder.AppendLine($" {pointer} =l add {startName}, {adjustedIndex}");
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GenerateCopy(arrayType.ElementType, value, pointer);
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break;
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}
|
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case NubFixedArrayType fixedArrayType:
|
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{
|
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var startName = VarName();
|
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_builder.AppendLine($" {startName} =l add {array}, 8");
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|
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var adjustedIndex = VarName();
|
|
_builder.AppendLine($" {adjustedIndex} =l mul {index}, {SizeOf(fixedArrayType.ElementType)}");
|
|
|
|
var pointer = VarName();
|
|
_builder.AppendLine($" {pointer} =l add {startName}, {adjustedIndex}");
|
|
|
|
GenerateCopy(fixedArrayType.ElementType, value, pointer);
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
throw new ArgumentOutOfRangeException();
|
|
}
|
|
}
|
|
}
|
|
|
|
private static void GenerateBlock(BlockNode 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))
|
|
{
|
|
GenerateStatement(statement);
|
|
}
|
|
|
|
var count = _variableScopes.Pop();
|
|
while (_variableScopes.Count > count)
|
|
{
|
|
_variableScopes.Pop();
|
|
}
|
|
|
|
_codeIsReachable = true;
|
|
}
|
|
|
|
private static void GenerateBreak()
|
|
{
|
|
_builder.AppendLine($" jmp {_breakLabels.Peek()}");
|
|
_codeIsReachable = false;
|
|
}
|
|
|
|
private static void GenerateContinue()
|
|
{
|
|
_builder.AppendLine($" jmp {_continueLabels.Peek()}");
|
|
_codeIsReachable = false;
|
|
}
|
|
|
|
private static void GenerateDereferenceAssignment(DereferenceAssignmentNode dereferenceAssignment)
|
|
{
|
|
var pointer = GenerateExpression(dereferenceAssignment.Dereference.Expression);
|
|
var value = GenerateExpression(dereferenceAssignment.Value);
|
|
GenerateCopy(dereferenceAssignment.Value.Type, value, pointer);
|
|
}
|
|
|
|
private static void GenerateIf(IfNode ifStatement)
|
|
{
|
|
var trueLabel = LabelName();
|
|
var falseLabel = LabelName();
|
|
var endLabel = LabelName();
|
|
|
|
var result = GenerateExpression(ifStatement.Condition);
|
|
_builder.AppendLine($" jnz {result}, {trueLabel}, {falseLabel}");
|
|
_builder.AppendLine(trueLabel);
|
|
GenerateBlock(ifStatement.Body);
|
|
_builder.AppendLine($" jmp {endLabel}");
|
|
_builder.AppendLine(falseLabel);
|
|
if (ifStatement.Else.HasValue)
|
|
{
|
|
ifStatement.Else.Value.Match
|
|
(
|
|
elseIfNode => GenerateIf(elseIfNode),
|
|
elseNode => GenerateBlock(elseNode)
|
|
);
|
|
}
|
|
|
|
_builder.AppendLine(endLabel);
|
|
}
|
|
|
|
private static void GenerateMemberAssignment(MemberAssignmentNode memberAssignment)
|
|
{
|
|
var structType = memberAssignment.MemberAccess.Expression.Type as NubStructType;
|
|
Debug.Assert(structType != null);
|
|
|
|
var structDefinition = _definitionTable.LookupStruct(structType.Namespace, structType.Name).GetValue();
|
|
var offset = OffsetOf(structDefinition, memberAssignment.MemberAccess.Member);
|
|
|
|
var item = GenerateExpression(memberAssignment.MemberAccess.Expression);
|
|
var pointer = VarName();
|
|
|
|
_builder.AppendLine($" {pointer} =l add {item}, {offset}");
|
|
|
|
var value = GenerateExpression(memberAssignment.Value);
|
|
|
|
GenerateCopy(memberAssignment.Value.Type, value, pointer);
|
|
}
|
|
|
|
private static void GenerateReturn(ReturnNode @return)
|
|
{
|
|
if (@return.Value.HasValue)
|
|
{
|
|
var result = GenerateExpression(@return.Value.Value);
|
|
_builder.AppendLine($" ret {result}");
|
|
}
|
|
else
|
|
{
|
|
_builder.AppendLine(" ret");
|
|
}
|
|
}
|
|
|
|
private static void GenerateVariableDeclaration(VariableDeclarationNode variableDeclaration)
|
|
{
|
|
var generatedName = VarName();
|
|
_builder.AppendLine($" {generatedName} =l alloc8 {SizeOf(variableDeclaration.Type)}");
|
|
_variables.Push(new Variable(variableDeclaration.Name, generatedName));
|
|
}
|
|
|
|
private static void GenerateVariableAssignment(VariableAssignmentNode variableAssignment)
|
|
{
|
|
var value = GenerateExpression(variableAssignment.Value);
|
|
var variable = _variables.Single(x => x.Name == variableAssignment.Identifier.Name);
|
|
GenerateCopy(variableAssignment.Value.Type, value, variable.GeneratedName);
|
|
variable.Assign();
|
|
}
|
|
|
|
private static void GenerateWhile(WhileNode whileStatement)
|
|
{
|
|
var conditionLabel = LabelName();
|
|
var iterationLabel = LabelName();
|
|
var endLabel = LabelName();
|
|
|
|
_breakLabels.Push(endLabel);
|
|
_continueLabels.Push(conditionLabel);
|
|
|
|
_builder.AppendLine($" jmp {conditionLabel}");
|
|
_builder.AppendLine(iterationLabel);
|
|
GenerateBlock(whileStatement.Body);
|
|
_builder.AppendLine(conditionLabel);
|
|
var result = GenerateExpression(whileStatement.Condition);
|
|
_builder.AppendLine($" jnz {result}, {iterationLabel}, {endLabel}");
|
|
_builder.AppendLine(endLabel);
|
|
|
|
_continueLabels.Pop();
|
|
_breakLabels.Pop();
|
|
}
|
|
|
|
private static string GenerateExpression(ExpressionNode expression)
|
|
{
|
|
return expression switch
|
|
{
|
|
AddressOfNode addressOf => GenerateAddressOf(addressOf),
|
|
AnonymousFuncNode anonymousFunc => GenerateAnonymousFunc(anonymousFunc),
|
|
ArrayIndexAccessNode arrayIndex => GenerateArrayIndexAccessNode(arrayIndex),
|
|
ArrayInitializerNode arrayInitializer => GenerateArrayInitializer(arrayInitializer),
|
|
BinaryExpressionNode binaryExpression => GenerateBinaryExpression(binaryExpression),
|
|
DereferenceNode dereference => GenerateDereference(dereference),
|
|
FixedArrayInitializerNode fixedArrayInitializer => GenerateFixedArrayInitializer(fixedArrayInitializer),
|
|
FuncCallNode funcCallExpression => GenerateFuncCall(funcCallExpression),
|
|
IdentifierNode identifier => GenerateIdentifier(identifier),
|
|
LiteralNode literal => GenerateLiteral(literal),
|
|
StructInitializerNode structInitializer => GenerateStructInitializer(structInitializer),
|
|
UnaryExpressionNode unaryExpression => GenerateUnaryExpression(unaryExpression),
|
|
MemberAccessNode memberAccess => GenerateMemberAccess(memberAccess),
|
|
_ => throw new ArgumentOutOfRangeException(nameof(expression))
|
|
};
|
|
}
|
|
|
|
private static string GenerateAnonymousFunc(AnonymousFuncNode anonymousFunc)
|
|
{
|
|
var name = $"$anon_func{++_anonymousFuncIndex}";
|
|
_anonymousFunctions.Enqueue((anonymousFunc, name));
|
|
return name;
|
|
}
|
|
|
|
private static string GenerateArrayIndexPointer(ArrayIndexAccessNode arrayIndexAccess)
|
|
{
|
|
var array = GenerateExpression(arrayIndexAccess.Array);
|
|
var index = GenerateExpression(arrayIndexAccess.Index);
|
|
GenerateArrayBoundsCheck(array, index);
|
|
|
|
var elementType = arrayIndexAccess.Array.Type switch
|
|
{
|
|
NubArrayType arrayType => arrayType.ElementType,
|
|
NubFixedArrayType fixedArrayType => fixedArrayType.ElementType,
|
|
_ => throw new ArgumentOutOfRangeException()
|
|
};
|
|
|
|
var firstItemPointerName = VarName();
|
|
_builder.AppendLine($" {firstItemPointerName} =l add {array}, 8");
|
|
var offsetPointerName = VarName();
|
|
_builder.AppendLine($" {offsetPointerName} =l mul {index}, {SizeOf(elementType)}");
|
|
var resultPointerName = VarName();
|
|
_builder.AppendLine($" {resultPointerName} =l add {firstItemPointerName}, {offsetPointerName}");
|
|
return resultPointerName;
|
|
}
|
|
|
|
private static string GenerateArrayIndexAccessNode(ArrayIndexAccessNode arrayIndexAccess)
|
|
{
|
|
var pointerName = GenerateArrayIndexPointer(arrayIndexAccess);
|
|
|
|
if (IsPointerType(arrayIndexAccess.Type))
|
|
{
|
|
return pointerName;
|
|
}
|
|
else
|
|
{
|
|
var outputName = VarName();
|
|
_builder.AppendLine($" {outputName} {QBEAssign(arrayIndexAccess.Type)} {QBELoad(arrayIndexAccess.Type)} {pointerName}");
|
|
return outputName;
|
|
}
|
|
}
|
|
|
|
private static void GenerateArrayBoundsCheck(string array, string index)
|
|
{
|
|
// var countName = VarName();
|
|
// _builder.AppendLine($" {countName} =l loadl {array}");
|
|
//
|
|
// var isNegativeName = VarName();
|
|
// _builder.AppendLine($" {isNegativeName} =w csltl {index}, 0");
|
|
//
|
|
// var isOobName = VarName();
|
|
// _builder.AppendLine($" {isOobName} =w csgel {index}, {countName}");
|
|
//
|
|
// var anyOobName = VarName();
|
|
// _builder.AppendLine($" {anyOobName} =w or {isNegativeName}, {isOobName}");
|
|
//
|
|
// var oobLabel = LabelName();
|
|
// var notOobLabel = LabelName();
|
|
// _builder.AppendLine($" jnz {anyOobName}, {oobLabel}, {notOobLabel}");
|
|
//
|
|
// _builder.AppendLine(oobLabel);
|
|
// _builder.AppendLine($" call $nub_panic_array_oob()");
|
|
//
|
|
// _builder.AppendLine(notOobLabel);
|
|
}
|
|
|
|
private static string GenerateArrayInitializer(ArrayInitializerNode arrayInitializer)
|
|
{
|
|
var capacity = GenerateExpression(arrayInitializer.Capacity);
|
|
var elementSize = SizeOf(arrayInitializer.ElementType);
|
|
var capacityInBytes = VarName();
|
|
_builder.AppendLine($" {capacityInBytes} =l mul {capacity}, {elementSize}");
|
|
var totalArraySize = VarName();
|
|
_builder.AppendLine($" {totalArraySize} =l add {capacityInBytes}, 8");
|
|
var outputName = VarName();
|
|
_builder.AppendLine($" {outputName} =l alloc8 {totalArraySize}");
|
|
_builder.AppendLine($" storel {capacity}, {outputName}");
|
|
|
|
var dataPtr = VarName();
|
|
_builder.AppendLine($" {dataPtr} =l add {outputName}, 8");
|
|
_builder.AppendLine($" call $nub_memset(l {dataPtr}, w 0, l {capacityInBytes})");
|
|
|
|
return outputName;
|
|
}
|
|
|
|
private static string GenerateDereference(DereferenceNode dereference)
|
|
{
|
|
var result = GenerateExpression(dereference.Expression);
|
|
var outputName = VarName();
|
|
_builder.AppendLine($" {outputName} {QBEAssign(dereference.Type)} {QBELoad(dereference.Type)} {result}");
|
|
return outputName;
|
|
}
|
|
|
|
private static string GenerateAddressOf(AddressOfNode addressOf)
|
|
{
|
|
switch (addressOf.Expression)
|
|
{
|
|
case ArrayIndexAccessNode arrayIndexAccess:
|
|
return GenerateArrayIndexPointer(arrayIndexAccess);
|
|
case DereferenceNode dereference:
|
|
return GenerateExpression(dereference.Expression);
|
|
case IdentifierNode identifier:
|
|
if (identifier.Namespace.HasValue)
|
|
{
|
|
throw new NotSupportedException("There is nothing to address in another namespace");
|
|
}
|
|
|
|
return _variables.Single(x => x.Name == identifier.Name).GeneratedName;
|
|
case MemberAccessNode memberAccess:
|
|
return GenerateMemberAccessPointer(memberAccess);
|
|
default:
|
|
throw new ArgumentOutOfRangeException();
|
|
}
|
|
}
|
|
|
|
private static string GenerateBinaryExpression(BinaryExpressionNode binaryExpression)
|
|
{
|
|
var left = GenerateExpression(binaryExpression.Left);
|
|
var right = GenerateExpression(binaryExpression.Right);
|
|
var outputName = VarName();
|
|
|
|
switch (binaryExpression.Operator)
|
|
{
|
|
case BinaryExpressionOperator.Equal:
|
|
{
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I64))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w ceql {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I32))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w ceqw {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
// if (binaryExpression.Left.Type.Equals(NubPrimitiveType.String))
|
|
// {
|
|
// _builder.AppendLine($" {outputName} =w call $nub_strcmp(l {left}, l {right})");
|
|
// return outputName;
|
|
// }
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.Bool))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w ceqw {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case BinaryExpressionOperator.NotEqual:
|
|
{
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I64))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w cnel {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I32))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w cnew {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
// if (binaryExpression.Left.Type.Equals(NubPrimitiveType.String))
|
|
// {
|
|
// _builder.AppendLine($" {outputName} =w call $nub_strcmp(l {left}, l {right})");
|
|
// _builder.AppendLine($" {outputName} =w xor {outputName}, 1");
|
|
// return outputName;
|
|
// }
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.Bool))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w cnew {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case BinaryExpressionOperator.GreaterThan:
|
|
{
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I64))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w csgtl {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I32))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w csgtw {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.Bool))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w csgtw {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case BinaryExpressionOperator.GreaterThanOrEqual:
|
|
{
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I64))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w csgel {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I32))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w csgew {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.Bool))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w csgew {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case BinaryExpressionOperator.LessThan:
|
|
{
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I64))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w csltl {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I32))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w csltw {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.Bool))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w csltw {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case BinaryExpressionOperator.LessThanOrEqual:
|
|
{
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I64))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w cslel {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I32))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w cslew {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.Bool))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w cslew {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case BinaryExpressionOperator.Plus:
|
|
{
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I64))
|
|
{
|
|
_builder.AppendLine($" {outputName} =l add {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I32))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w add {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case BinaryExpressionOperator.Minus:
|
|
{
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I64))
|
|
{
|
|
_builder.AppendLine($" {outputName} =l sub {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I32))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w sub {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case BinaryExpressionOperator.Multiply:
|
|
{
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I64))
|
|
{
|
|
_builder.AppendLine($" {outputName} =l mul {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I32))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w mul {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case BinaryExpressionOperator.Divide:
|
|
{
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I64))
|
|
{
|
|
_builder.AppendLine($" {outputName} =l div {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
if (binaryExpression.Left.Type.Equals(NubPrimitiveType.I32))
|
|
{
|
|
_builder.AppendLine($" {outputName} =w div {left}, {right}");
|
|
return outputName;
|
|
}
|
|
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
throw new ArgumentOutOfRangeException();
|
|
}
|
|
}
|
|
|
|
throw new NotSupportedException($"Binary operator {binaryExpression.Operator} for types {binaryExpression.Left.Type} and {binaryExpression.Right.Type} not supported");
|
|
}
|
|
|
|
private static string GenerateIdentifier(IdentifierNode identifier)
|
|
{
|
|
if (_definitionTable.LookupFunc(identifier.Namespace.Or(_compilationUnit.Namespace), identifier.Name).TryGetValue(out var func))
|
|
{
|
|
return FuncName(func);
|
|
}
|
|
|
|
if (!identifier.Namespace.HasValue)
|
|
{
|
|
var variable = _variables.Single(v => v.Name == identifier.Name);
|
|
if (IsPointerType(identifier.Type))
|
|
{
|
|
return variable.GeneratedName;
|
|
}
|
|
else
|
|
{
|
|
var output = VarName();
|
|
_builder.AppendLine($" {output} {QBEAssign(identifier.Type)} {QBELoad(identifier.Type)} {variable.GeneratedName}");
|
|
return output;
|
|
}
|
|
}
|
|
|
|
throw new UnreachableException();
|
|
}
|
|
|
|
private static string GenerateLiteral(LiteralNode literal)
|
|
{
|
|
if (literal.Type.IsInteger)
|
|
{
|
|
switch (literal.Kind)
|
|
{
|
|
case LiteralKind.Integer:
|
|
return literal.Literal;
|
|
case LiteralKind.Float:
|
|
return literal.Literal.Split(".").First();
|
|
default:
|
|
throw new ArgumentOutOfRangeException();
|
|
}
|
|
}
|
|
|
|
if (literal.Type.IsFloat64)
|
|
{
|
|
var value = double.Parse(literal.Literal, CultureInfo.InvariantCulture);
|
|
var bits = BitConverter.DoubleToInt64Bits(value);
|
|
return bits.ToString();
|
|
}
|
|
|
|
if (literal.Type.IsFloat32)
|
|
{
|
|
var value = float.Parse(literal.Literal, CultureInfo.InvariantCulture);
|
|
var bits = BitConverter.SingleToInt32Bits(value);
|
|
return bits.ToString();
|
|
}
|
|
|
|
switch (literal.Kind)
|
|
{
|
|
case LiteralKind.String:
|
|
_strings.Add(literal.Literal);
|
|
return $"$string{_strings.Count}";
|
|
case LiteralKind.Bool:
|
|
return bool.Parse(literal.Literal) ? "1" : "0";
|
|
default:
|
|
throw new ArgumentOutOfRangeException();
|
|
}
|
|
}
|
|
|
|
private static string GenerateStructInitializer(StructInitializerNode structInitializer)
|
|
{
|
|
var structDefinition = _definitionTable.LookupStruct(structInitializer.StructType.Namespace, structInitializer.StructType.Name).GetValue();
|
|
|
|
var structVar = VarName();
|
|
var size = SizeOf(structInitializer.StructType);
|
|
_builder.AppendLine($" {structVar} =l alloc8 {size}");
|
|
|
|
foreach (var field in structDefinition.Fields)
|
|
{
|
|
var offset = OffsetOf(structDefinition, field.Name);
|
|
|
|
if (structInitializer.Initializers.TryGetValue(field.Name, out var fieldValue))
|
|
{
|
|
var value = GenerateExpression(fieldValue);
|
|
var pointer = VarName();
|
|
_builder.AppendLine($" {pointer} =l add {structVar}, {offset}");
|
|
GenerateCopy(field.Type, value, pointer);
|
|
}
|
|
else if (field.Value.HasValue)
|
|
{
|
|
var value = GenerateExpression(field.Value.Value);
|
|
var pointer = VarName();
|
|
_builder.AppendLine($" {pointer} =l add {structVar}, {offset}");
|
|
GenerateCopy(field.Type, value, pointer);
|
|
}
|
|
else
|
|
{
|
|
Debug.Assert(false);
|
|
}
|
|
}
|
|
|
|
return structVar;
|
|
}
|
|
|
|
private static string GenerateUnaryExpression(UnaryExpressionNode unaryExpression)
|
|
{
|
|
var operand = GenerateExpression(unaryExpression.Operand);
|
|
var outputName = VarName();
|
|
|
|
switch (unaryExpression.Operator)
|
|
{
|
|
case UnaryExpressionOperator.Negate:
|
|
{
|
|
switch (unaryExpression.Operand.Type)
|
|
{
|
|
case NubPrimitiveType { Kind: PrimitiveTypeKind.I64 }:
|
|
_builder.AppendLine($" {outputName} =l neg {operand}");
|
|
return outputName;
|
|
case NubPrimitiveType { Kind: PrimitiveTypeKind.I32 or PrimitiveTypeKind.I16 or PrimitiveTypeKind.I8 }:
|
|
_builder.AppendLine($" {outputName} =w neg {operand}");
|
|
return outputName;
|
|
case NubPrimitiveType { Kind: PrimitiveTypeKind.F64 }:
|
|
_builder.AppendLine($" {outputName} =d neg {operand}");
|
|
return outputName;
|
|
case NubPrimitiveType { Kind: PrimitiveTypeKind.F32 }:
|
|
_builder.AppendLine($" {outputName} =s neg {operand}");
|
|
return outputName;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case UnaryExpressionOperator.Invert:
|
|
{
|
|
switch (unaryExpression.Operand.Type)
|
|
{
|
|
case NubPrimitiveType { Kind: PrimitiveTypeKind.Bool }:
|
|
_builder.AppendLine($" {outputName} =w xor {operand}, 1");
|
|
return outputName;
|
|
}
|
|
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
throw new ArgumentOutOfRangeException();
|
|
}
|
|
}
|
|
|
|
throw new NotSupportedException($"Unary operator {unaryExpression.Operator} for type {unaryExpression.Operand.Type} not supported");
|
|
}
|
|
|
|
private static string GenerateMemberAccessPointer(MemberAccessNode memberAccess)
|
|
{
|
|
var item = GenerateExpression(memberAccess.Expression);
|
|
switch (memberAccess.Expression.Type)
|
|
{
|
|
case NubArrayType:
|
|
{
|
|
if (memberAccess.Member == "count")
|
|
{
|
|
return item;
|
|
}
|
|
|
|
throw new UnreachableException(nameof(memberAccess.Member));
|
|
}
|
|
case NubStructType structType:
|
|
{
|
|
var structDefinition = _definitionTable.LookupStruct(structType.Namespace, structType.Name).GetValue();
|
|
var offset = OffsetOf(structDefinition, memberAccess.Member);
|
|
|
|
var offsetName = VarName();
|
|
_builder.AppendLine($" {offsetName} =l add {item}, {offset}");
|
|
return offsetName;
|
|
}
|
|
default:
|
|
{
|
|
throw new ArgumentOutOfRangeException(nameof(memberAccess.Expression.Type));
|
|
}
|
|
}
|
|
}
|
|
|
|
private static string GenerateMemberAccess(MemberAccessNode memberAccess)
|
|
{
|
|
var pointer = GenerateMemberAccessPointer(memberAccess);
|
|
|
|
if (IsPointerType(memberAccess.Type))
|
|
{
|
|
return pointer;
|
|
}
|
|
else
|
|
{
|
|
var outputName = VarName();
|
|
_builder.AppendLine($" {outputName} {QBEAssign(memberAccess.Type)} {QBELoad(memberAccess.Type)} {pointer}");
|
|
return outputName;
|
|
}
|
|
}
|
|
|
|
private static string GenerateFixedArrayInitializer(FixedArrayInitializerNode fixedArrayInitializer)
|
|
{
|
|
var totalSize = SizeOf(fixedArrayInitializer.Type);
|
|
var outputName = VarName();
|
|
_builder.AppendLine($" {outputName} =l alloc8 {totalSize}");
|
|
|
|
_builder.AppendLine($" storel {fixedArrayInitializer.Capacity}, {outputName}");
|
|
|
|
var dataPtr = VarName();
|
|
_builder.AppendLine($" {dataPtr} =l add {outputName}, 8");
|
|
|
|
var dataSize = totalSize - 8;
|
|
_builder.AppendLine($" call $nub_memset(l {dataPtr}, w 0, l {dataSize})");
|
|
|
|
return outputName;
|
|
}
|
|
|
|
private static string GenerateFuncCall(FuncCallNode funcCall)
|
|
{
|
|
var funcType = (NubFuncType)funcCall.Expression.Type;
|
|
|
|
var parameterStrings = new List<string>();
|
|
|
|
for (var i = 0; i < funcCall.Parameters.Count; i++)
|
|
{
|
|
var parameter = funcCall.Parameters[i];
|
|
var result = GenerateExpression(parameter);
|
|
|
|
var qbeType = parameter.Type switch
|
|
{
|
|
NubArrayType => "l",
|
|
NubPointerType => "l",
|
|
NubPrimitiveType pointerType => pointerType.Kind switch
|
|
{
|
|
PrimitiveTypeKind.I64 => "l",
|
|
PrimitiveTypeKind.I32 => "w",
|
|
PrimitiveTypeKind.I16 => "sh",
|
|
PrimitiveTypeKind.I8 => "sb",
|
|
PrimitiveTypeKind.U64 => "l",
|
|
PrimitiveTypeKind.U32 => "w",
|
|
PrimitiveTypeKind.U16 => "uh",
|
|
PrimitiveTypeKind.U8 => "ub",
|
|
PrimitiveTypeKind.F64 => "d",
|
|
PrimitiveTypeKind.F32 => "s",
|
|
PrimitiveTypeKind.Bool => "w",
|
|
_ => throw new ArgumentOutOfRangeException()
|
|
},
|
|
NubStructType structType => StructName(_definitionTable.LookupStruct(structType.Namespace, structType.Name).GetValue()),
|
|
NubFixedArrayType => "l",
|
|
NubFuncType => "l",
|
|
_ => throw new NotSupportedException($"'{parameter.Type}' type cannot be used in function calls")
|
|
};
|
|
parameterStrings.Add($"{qbeType} {result}");
|
|
}
|
|
|
|
var funcPointer = GenerateExpression(funcCall.Expression);
|
|
|
|
if (funcType.ReturnType is not NubVoidType)
|
|
{
|
|
var outputName = VarName();
|
|
_builder.AppendLine($" {outputName} {QBEAssign(funcCall.Type)} call {funcPointer}({string.Join(", ", parameterStrings)})");
|
|
return outputName;
|
|
}
|
|
else
|
|
{
|
|
_builder.AppendLine($" call {funcPointer}({string.Join(", ", parameterStrings)})");
|
|
return "fuck";
|
|
}
|
|
}
|
|
|
|
private static void GenerateCopy(NubType type, string value, string destinationPointer)
|
|
{
|
|
if (IsPointerType(type))
|
|
{
|
|
_builder.AppendLine($" blit {value}, {destinationPointer}, {SizeOf(type)}");
|
|
}
|
|
else
|
|
{
|
|
_builder.AppendLine($" {QBEStore(type)} {value}, {destinationPointer}");
|
|
}
|
|
}
|
|
}
|
|
|
|
internal class Variable(string name, string generatedName)
|
|
{
|
|
public string Name { get; init; } = name;
|
|
public string GeneratedName { get; init; } = generatedName;
|
|
public bool Initialized { get; private set; }
|
|
|
|
public Variable Assign()
|
|
{
|
|
Initialized = true;
|
|
return this;
|
|
}
|
|
}
|