1359 lines
50 KiB
C#
1359 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;
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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<CStringLiteral> _cStringLiterals = [];
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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 int _cStringLiteralIndex;
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private static bool _codeIsReachable = true;
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public static string Emit(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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_cStringLiterals = [];
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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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_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 _compilationUnit.Definitions.OfType<LocalFuncDefinitionNode>())
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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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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 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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NubCStringType => "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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NubCStringType => "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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NubCStringType => "=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 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 NubCStringType:
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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($"Member '{member}' not found in struct");
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}
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private static bool IsPointerType(NubType type)
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{
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if (type.IsVoid)
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{
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throw new InvalidOperationException($"{nameof(IsPointerType)} should not be called on void types");
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}
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return type is NubStructType or NubFixedArrayType;
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}
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private static void EmitFuncDefinition(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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NubCStringType => "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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NubCStringType => "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, new Val(parameterName, parameter.Type)));
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}
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EmitBlock(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 EmitStructDefinition(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 => $"b {SizeOf(fixedArrayType)}",
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NubFuncType => "l",
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NubCStringType => "l",
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_ => throw new NotSupportedException($"'{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 EmitStatement(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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EmitArrayIndexAssignment(arrayIndexAssignment);
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break;
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case BreakNode:
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EmitBreak();
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break;
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case ContinueNode:
|
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EmitContinue();
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break;
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case DereferenceAssignmentNode dereferenceAssignment:
|
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EmitDereferenceAssignment(dereferenceAssignment);
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break;
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case IfNode ifStatement:
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EmitIf(ifStatement);
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break;
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case MemberAssignmentNode memberAssignment:
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EmitMemberAssignment(memberAssignment);
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break;
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case ReturnNode @return:
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EmitReturn(@return);
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break;
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case StatementExpressionNode statementExpression:
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EmitExpression(statementExpression.Expression);
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break;
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case VariableDeclarationNode variableDeclaration:
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EmitVariableDeclaration(variableDeclaration);
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break;
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case VariableAssignmentNode variableAssignment:
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EmitVariableAssignment(variableAssignment);
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break;
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case WhileNode whileStatement:
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EmitWhile(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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|
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private static void EmitArrayIndexAssignment(ArrayIndexAssignmentNode arrayIndexAssignment)
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|
{
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|
var array = EmitUnwrap(EmitExpression(arrayIndexAssignment.ArrayIndexAccess.Array));
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var index = EmitUnwrap(EmitExpression(arrayIndexAssignment.ArrayIndexAccess.Index));
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EmitArrayBoundsCheck(array, index);
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var value = EmitUnwrap(EmitExpression(arrayIndexAssignment.Value));
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|
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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 pointer = VarName();
|
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_builder.AppendLine($" {pointer} =l mul {index}, {SizeOf(arrayType.ElementType)}");
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|
_builder.AppendLine($" {pointer} =l add {pointer}, 8");
|
|
_builder.AppendLine($" {pointer} =l add {array}, {pointer}");
|
|
|
|
EmitCopy(arrayType.ElementType, value, pointer);
|
|
break;
|
|
}
|
|
case NubFixedArrayType fixedArrayType:
|
|
{
|
|
var pointer = VarName();
|
|
_builder.AppendLine($" {pointer} =l mul {index}, {SizeOf(fixedArrayType.ElementType)}");
|
|
_builder.AppendLine($" {pointer} =l add {pointer}, 8");
|
|
_builder.AppendLine($" {pointer} =l add {array}, {pointer}");
|
|
|
|
EmitCopy(fixedArrayType.ElementType, value, pointer);
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
throw new ArgumentOutOfRangeException();
|
|
}
|
|
}
|
|
}
|
|
|
|
private static void EmitBlock(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))
|
|
{
|
|
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 EmitDereferenceAssignment(DereferenceAssignmentNode dereferenceAssignment)
|
|
{
|
|
var pointer = EmitUnwrap(EmitExpression(dereferenceAssignment.Dereference.Expression));
|
|
var value = EmitUnwrap(EmitExpression(dereferenceAssignment.Value));
|
|
EmitCopy(dereferenceAssignment.Value.Type, value, pointer);
|
|
}
|
|
|
|
private static void EmitIf(IfNode 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 EmitMemberAssignment(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 = EmitUnwrap(EmitExpression(memberAssignment.MemberAccess.Expression));
|
|
var pointer = VarName();
|
|
|
|
_builder.AppendLine($" {pointer} =l add {item}, {offset}");
|
|
|
|
var value = EmitUnwrap(EmitExpression(memberAssignment.Value));
|
|
|
|
EmitCopy(memberAssignment.Value.Type, value, pointer);
|
|
}
|
|
|
|
private static void EmitReturn(ReturnNode @return)
|
|
{
|
|
if (@return.Value.HasValue)
|
|
{
|
|
var result = EmitUnwrap(EmitExpression(@return.Value.Value));
|
|
_builder.AppendLine($" ret {result}");
|
|
}
|
|
else
|
|
{
|
|
_builder.AppendLine(" ret");
|
|
}
|
|
}
|
|
|
|
private static void EmitVariableDeclaration(VariableDeclarationNode variableDeclaration)
|
|
{
|
|
var tmp = VarName();
|
|
_builder.AppendLine($" {tmp} =l alloc8 {SizeOf(variableDeclaration.Type)}");
|
|
_variables.Push(new Variable(variableDeclaration.Name, new Val(tmp, variableDeclaration.Type)));
|
|
}
|
|
|
|
private static void EmitVariableAssignment(VariableAssignmentNode variableAssignment)
|
|
{
|
|
var value = EmitUnwrap(EmitExpression(variableAssignment.Value));
|
|
var variable = _variables.Single(x => x.Name == variableAssignment.Identifier.Name);
|
|
EmitCopy(variableAssignment.Value.Type, value, variable.Val.Name);
|
|
}
|
|
|
|
private static void EmitWhile(WhileNode whileStatement)
|
|
{
|
|
var conditionLabel = LabelName();
|
|
var iterationLabel = LabelName();
|
|
var endLabel = LabelName();
|
|
|
|
_breakLabels.Push(endLabel);
|
|
_continueLabels.Push(conditionLabel);
|
|
|
|
_builder.AppendLine($" 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(ExpressionNode expression)
|
|
{
|
|
return expression switch
|
|
{
|
|
AddressOfNode addressOf => EmitAddressOf(addressOf),
|
|
AnonymousFuncNode anonymousFunc => EmitAnonymousFunc(anonymousFunc),
|
|
ArrayIndexAccessNode arrayIndex => EmitArrayIndexAccess(arrayIndex),
|
|
ArrayInitializerNode arrayInitializer => EmitArrayInitializer(arrayInitializer),
|
|
BinaryExpressionNode binaryExpression => EmitBinaryExpression(binaryExpression),
|
|
DereferenceNode dereference => EmitDereference(dereference),
|
|
FixedArrayInitializerNode fixedArrayInitializer => EmitFixedArrayInitializer(fixedArrayInitializer),
|
|
FuncCallNode funcCallExpression => EmitFuncCall(funcCallExpression),
|
|
IdentifierNode identifier => EmitIdentifier(identifier),
|
|
LiteralNode literal => EmitLiteral(literal),
|
|
StructInitializerNode structInitializer => EmitStructInitializer(structInitializer),
|
|
UnaryExpressionNode unaryExpression => EmitUnaryExpression(unaryExpression),
|
|
MemberAccessNode memberAccess => EmitMemberAccess(memberAccess),
|
|
_ => throw new ArgumentOutOfRangeException(nameof(expression))
|
|
};
|
|
}
|
|
|
|
private static Val EmitAnonymousFunc(AnonymousFuncNode anonymousFunc)
|
|
{
|
|
var name = $"$anon_func{++_anonymousFuncIndex}";
|
|
_anonymousFunctions.Enqueue((anonymousFunc, name));
|
|
return new Val(name, anonymousFunc.Type, ValKind.Func);
|
|
}
|
|
|
|
private static string EmitArrayIndexPointer(ArrayIndexAccessNode arrayIndexAccess)
|
|
{
|
|
var array = EmitUnwrap(EmitExpression(arrayIndexAccess.Array));
|
|
var index = EmitUnwrap(EmitExpression(arrayIndexAccess.Index));
|
|
EmitArrayBoundsCheck(array, index);
|
|
|
|
var elementType = arrayIndexAccess.Array.Type switch
|
|
{
|
|
NubArrayType arrayType => arrayType.ElementType,
|
|
NubFixedArrayType fixedArrayType => fixedArrayType.ElementType,
|
|
_ => throw new ArgumentOutOfRangeException()
|
|
};
|
|
|
|
var pointer = VarName();
|
|
_builder.AppendLine($" {pointer} =l mul {index}, {SizeOf(elementType)}");
|
|
_builder.AppendLine($" {pointer} =l add {pointer}, 8");
|
|
_builder.AppendLine($" {pointer} =l add {array}, {pointer}");
|
|
return pointer;
|
|
}
|
|
|
|
private static Val EmitArrayIndexAccess(ArrayIndexAccessNode arrayIndexAccess)
|
|
{
|
|
var pointer = EmitArrayIndexPointer(arrayIndexAccess);
|
|
var outputName = VarName();
|
|
_builder.AppendLine($" {outputName} {QBEAssign(arrayIndexAccess.Type)} {QBELoad(arrayIndexAccess.Type)} {pointer}");
|
|
return new Val(outputName, arrayIndexAccess.Type);
|
|
}
|
|
|
|
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 $nub_panic_array_oob()");
|
|
|
|
_builder.AppendLine(notOobLabel);
|
|
}
|
|
|
|
private static Val EmitArrayInitializer(ArrayInitializerNode arrayInitializer)
|
|
{
|
|
var capacity = EmitUnwrap(EmitExpression(arrayInitializer.Capacity));
|
|
var elementSize = SizeOf(arrayInitializer.ElementType);
|
|
|
|
var capacityInBytes = VarName();
|
|
_builder.AppendLine($" {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 $nub_memset(l {dataPointer}, w 0, l {capacityInBytes})");
|
|
|
|
return new Val(arrayPointer, arrayInitializer.Type);
|
|
}
|
|
|
|
private static Val EmitDereference(DereferenceNode dereference)
|
|
{
|
|
var result = EmitUnwrap(EmitExpression(dereference.Expression));
|
|
var outputName = VarName();
|
|
_builder.AppendLine($" {outputName} {QBEAssign(dereference.Type)} {QBELoad(dereference.Type)} {result}");
|
|
return new Val(outputName, dereference.Type);
|
|
}
|
|
|
|
private static Val EmitAddressOf(AddressOfNode addressOf)
|
|
{
|
|
switch (addressOf.Expression)
|
|
{
|
|
case ArrayIndexAccessNode arrayIndexAccess:
|
|
var pointer = EmitArrayIndexPointer(arrayIndexAccess);
|
|
return new Val(pointer, addressOf.Type);
|
|
case DereferenceNode dereference:
|
|
return EmitExpression(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).Val;
|
|
case MemberAccessNode memberAccess:
|
|
var ptr = EmitMemberAccessPointer(memberAccess);
|
|
return new Val(ptr, addressOf.Type);
|
|
default:
|
|
throw new ArgumentOutOfRangeException();
|
|
}
|
|
}
|
|
|
|
private static Val EmitBinaryExpression(BinaryExpressionNode binaryExpression)
|
|
{
|
|
var left = EmitUnwrap(EmitExpression(binaryExpression.Left));
|
|
var right = EmitUnwrap(EmitExpression(binaryExpression.Right));
|
|
var outputName = VarName();
|
|
var output = new Val(outputName, binaryExpression.Type);
|
|
|
|
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(IdentifierNode identifier)
|
|
{
|
|
if (_definitionTable.LookupFunc(identifier.Namespace.Or(_compilationUnit.Namespace), identifier.Name).TryGetValue(out var func))
|
|
{
|
|
return new Val(FuncName(func), identifier.Type, ValKind.Func);
|
|
}
|
|
|
|
if (!identifier.Namespace.HasValue)
|
|
{
|
|
return _variables.Single(v => v.Name == identifier.Name).Val;
|
|
}
|
|
|
|
throw new UnreachableException();
|
|
}
|
|
|
|
private static Val EmitLiteral(LiteralNode literal)
|
|
{
|
|
if (literal.Type.IsInteger)
|
|
{
|
|
switch (literal.Kind)
|
|
{
|
|
case LiteralKind.Integer:
|
|
return new Val(literal.Literal, literal.Type, ValKind.Literal);
|
|
case LiteralKind.Float:
|
|
return new Val(literal.Literal.Split(".").First(), literal.Type, ValKind.Literal);
|
|
default:
|
|
throw new ArgumentOutOfRangeException();
|
|
}
|
|
}
|
|
|
|
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.Literal);
|
|
}
|
|
|
|
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.Literal);
|
|
}
|
|
|
|
switch (literal.Kind)
|
|
{
|
|
case LiteralKind.String:
|
|
var cStringLiteral = new CStringLiteral(literal.Literal, CStringName());
|
|
_cStringLiterals.Add(cStringLiteral);
|
|
return new Val(cStringLiteral.Name, literal.Type, ValKind.Literal);
|
|
case LiteralKind.Bool:
|
|
return new Val(bool.Parse(literal.Literal) ? "1" : "0", literal.Type, ValKind.Literal);
|
|
default:
|
|
throw new ArgumentOutOfRangeException();
|
|
}
|
|
}
|
|
|
|
private static Val EmitStructInitializer(StructInitializerNode 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 fieldValue))
|
|
{
|
|
var value = EmitUnwrap(EmitExpression(fieldValue));
|
|
var pointer = VarName();
|
|
_builder.AppendLine($" {pointer} =l add {output}, {offset}");
|
|
EmitCopy(field.Type, value, pointer);
|
|
}
|
|
else if (field.Value.HasValue)
|
|
{
|
|
var value = EmitUnwrap(EmitExpression(field.Value.Value));
|
|
var pointer = VarName();
|
|
_builder.AppendLine($" {pointer} =l add {output}, {offset}");
|
|
EmitCopy(field.Type, value, pointer);
|
|
}
|
|
else
|
|
{
|
|
Debug.Assert(false);
|
|
}
|
|
}
|
|
|
|
return new Val(output, structInitializer.StructType);
|
|
}
|
|
|
|
private static Val EmitUnaryExpression(UnaryExpressionNode 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($" {outputName} =l neg {operand}");
|
|
return new Val(outputName, unaryExpression.Type);
|
|
case NubPrimitiveType { Kind: PrimitiveTypeKind.I32 or PrimitiveTypeKind.I16 or PrimitiveTypeKind.I8 }:
|
|
_builder.AppendLine($" {outputName} =w neg {operand}");
|
|
return new Val(outputName, unaryExpression.Type);
|
|
case NubPrimitiveType { Kind: PrimitiveTypeKind.F64 }:
|
|
_builder.AppendLine($" {outputName} =d neg {operand}");
|
|
return new Val(outputName, unaryExpression.Type);
|
|
case NubPrimitiveType { Kind: PrimitiveTypeKind.F32 }:
|
|
_builder.AppendLine($" {outputName} =s neg {operand}");
|
|
return new Val(outputName, unaryExpression.Type);
|
|
}
|
|
|
|
break;
|
|
}
|
|
case UnaryExpressionOperator.Invert:
|
|
{
|
|
switch (unaryExpression.Operand.Type)
|
|
{
|
|
case NubPrimitiveType { Kind: PrimitiveTypeKind.Bool }:
|
|
_builder.AppendLine($" {outputName} =w xor {operand}, 1");
|
|
return new Val(outputName, unaryExpression.Type);
|
|
}
|
|
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
throw new ArgumentOutOfRangeException();
|
|
}
|
|
}
|
|
|
|
throw new NotSupportedException($"Unary operator {unaryExpression.Operator} for type {unaryExpression.Operand.Type} not supported");
|
|
}
|
|
|
|
private static string EmitMemberAccessPointer(MemberAccessNode memberAccess)
|
|
{
|
|
var item = EmitUnwrap(EmitExpression(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($" {offsetName} =l add {item}, {offset}");
|
|
return offsetName;
|
|
}
|
|
default:
|
|
{
|
|
throw new ArgumentOutOfRangeException(nameof(memberAccess.Expression.Type));
|
|
}
|
|
}
|
|
}
|
|
|
|
private static Val EmitMemberAccess(MemberAccessNode memberAccess)
|
|
{
|
|
var pointer = EmitMemberAccessPointer(memberAccess);
|
|
|
|
var output = VarName();
|
|
_builder.AppendLine($" {output} {QBEAssign(memberAccess.Type)} {QBELoad(memberAccess.Type)} {pointer}");
|
|
return new Val(output, memberAccess.Type);
|
|
}
|
|
|
|
private static Val EmitFixedArrayInitializer(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 $nub_memset(l {dataPtr}, w 0, l {dataSize})");
|
|
|
|
return new Val(outputName, fixedArrayInitializer.Type);
|
|
}
|
|
|
|
private static Val EmitFuncCall(FuncCallNode funcCall)
|
|
{
|
|
var funcType = (NubFuncType)funcCall.Expression.Type;
|
|
|
|
var parameterStrings = new List<string>();
|
|
|
|
for (var i = 0; i < funcCall.Parameters.Count; i++)
|
|
{
|
|
var parameter = funcCall.Parameters[i];
|
|
var result = EmitUnwrap(EmitExpression(parameter));
|
|
|
|
var qbeType = parameter.Type switch
|
|
{
|
|
NubArrayType => "l",
|
|
NubPointerType => "l",
|
|
NubPrimitiveType pointerType => pointerType.Kind switch
|
|
{
|
|
PrimitiveTypeKind.I64 => "l",
|
|
PrimitiveTypeKind.I32 => "w",
|
|
PrimitiveTypeKind.I16 => "sh",
|
|
PrimitiveTypeKind.I8 => "sb",
|
|
PrimitiveTypeKind.U64 => "l",
|
|
PrimitiveTypeKind.U32 => "w",
|
|
PrimitiveTypeKind.U16 => "uh",
|
|
PrimitiveTypeKind.U8 => "ub",
|
|
PrimitiveTypeKind.F64 => "d",
|
|
PrimitiveTypeKind.F32 => "s",
|
|
PrimitiveTypeKind.Bool => "w",
|
|
_ => throw new ArgumentOutOfRangeException()
|
|
},
|
|
NubStructType structType => StructName(_definitionTable.LookupStruct(structType.Namespace, structType.Name).GetValue()),
|
|
NubFixedArrayType => "l",
|
|
NubFuncType => "l",
|
|
NubCStringType => "l",
|
|
_ => throw new NotSupportedException($"'{parameter.Type}' type cannot be used in function calls")
|
|
};
|
|
parameterStrings.Add($"{qbeType} {result}");
|
|
}
|
|
|
|
var funcPointer = EmitUnwrap(EmitExpression(funcCall.Expression));
|
|
|
|
if (funcType.ReturnType is not NubVoidType)
|
|
{
|
|
var outputName = VarName();
|
|
_builder.AppendLine($" {outputName} {QBEAssign(funcCall.Type)} call {funcPointer}({string.Join(", ", parameterStrings)})");
|
|
return new Val(outputName, funcCall.Type);
|
|
}
|
|
else
|
|
{
|
|
_builder.AppendLine($" call {funcPointer}({string.Join(", ", parameterStrings)})");
|
|
return new Val(string.Empty, funcCall.Type);
|
|
}
|
|
}
|
|
|
|
private static void EmitCopy(NubType type, string sourcePtr, string destinationPtr)
|
|
{
|
|
if (SizeOf(type) > 8)
|
|
{
|
|
_builder.AppendLine($" blit {sourcePtr}, {destinationPtr}, {SizeOf(type)}");
|
|
}
|
|
else
|
|
{
|
|
_builder.AppendLine($" {QBEStore(type)} {sourcePtr}, {destinationPtr}");
|
|
}
|
|
}
|
|
|
|
private static string EmitUnwrap(Val val)
|
|
{
|
|
if (val.Type.IsVoid)
|
|
{
|
|
throw new InvalidOperationException("Cannot unwrap temporary of void type");
|
|
}
|
|
|
|
switch (val.Kind)
|
|
{
|
|
case ValKind.Func:
|
|
case ValKind.Literal:
|
|
return val.Name;
|
|
case ValKind.Variable:
|
|
if (IsPointerType(val.Type))
|
|
{
|
|
return val.Name;
|
|
}
|
|
else
|
|
{
|
|
var result = VarName();
|
|
_builder.AppendLine($" {result} {QBEAssign(val.Type)} {QBELoad(val.Type)} {val.Name}");
|
|
return result;
|
|
}
|
|
default:
|
|
throw new ArgumentOutOfRangeException();
|
|
}
|
|
}
|
|
}
|
|
|
|
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 = ValKind.Variable)
|
|
{
|
|
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
|
|
{
|
|
Func,
|
|
Variable,
|
|
Literal
|
|
} |