Do not split generator to expr and stmt
This commit is contained in:
nub31
@@ -1,558 +0,0 @@
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using System.Diagnostics;
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using System.Globalization;
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using NubLang.Tokenization;
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using NubLang.TypeChecking.Node;
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namespace NubLang.Generation.QBE;
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public partial class QBEGenerator
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{
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private Val EmitExpression(ExpressionNode expression)
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{
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return expression switch
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{
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ArrayInitializerNode arrayInitializer => EmitArrayInitializer(arrayInitializer),
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StructInitializerNode structInitializer => EmitStructInitializer(structInitializer),
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AddressOfNode addressOf => EmitAddressOf(addressOf),
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DereferenceNode dereference => EmitDereference(dereference),
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BinaryExpressionNode binaryExpression => EmitBinaryExpression(binaryExpression),
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FuncCallNode funcCallExpression => EmitFuncCall(funcCallExpression),
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InterfaceFuncAccessNode interfaceFuncAccess => EmitInterfaceFuncAccess(interfaceFuncAccess),
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InterfaceFuncCallNode interfaceFuncCall => EmitInterfaceFuncCall(interfaceFuncCall),
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InterfaceInitializerNode interfaceInitializer => EmitInterfaceInitializer(interfaceInitializer),
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ExternFuncIdentNode externFuncIdent => EmitExternFuncIdent(externFuncIdent),
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LocalFuncIdentNode localFuncIdent => EmitLocalFuncIdent(localFuncIdent),
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VariableIdentNode variableIdent => EmitVariableIdent(variableIdent),
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LiteralNode literal => EmitLiteral(literal),
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UnaryExpressionNode unaryExpression => EmitUnaryExpression(unaryExpression),
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StructFieldAccessNode structFieldAccess => EmitStructFieldAccess(structFieldAccess),
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StructFuncAccessNode structFuncAccess => EmitStructFuncAccess(structFuncAccess),
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StructFuncCallNode structFuncCall => EmitStructFuncCall(structFuncCall),
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ArrayIndexAccessNode arrayIndex => EmitArrayIndexAccess(arrayIndex),
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_ => throw new ArgumentOutOfRangeException(nameof(expression))
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};
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}
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private Val EmitArrayIndexAccess(ArrayIndexAccessNode arrayIndexAccess)
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{
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var array = EmitUnwrap(EmitExpression(arrayIndexAccess.Target));
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var index = EmitUnwrap(EmitExpression(arrayIndexAccess.Index));
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EmitArraysCheck(array, index);
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var elementType = ((ArrayTypeNode)arrayIndexAccess.Target.Type).ElementType;
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var pointer = TmpName();
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_writer.Indented($"{pointer} =l mul {index}, {SizeOf(elementType)}");
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_writer.Indented($"{pointer} =l add {pointer}, 8");
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_writer.Indented($"{pointer} =l add {array}, {pointer}");
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return new Val(pointer, arrayIndexAccess.Type, ValKind.Pointer);
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}
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private void EmitArraysCheck(string array, string index)
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{
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var count = TmpName();
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_writer.Indented($"{count} =l loadl {array}");
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var isNegative = TmpName();
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_writer.Indented($"{isNegative} =w csltl {index}, 0");
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var isOob = TmpName();
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_writer.Indented($"{isOob} =w csgel {index}, {count}");
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var anyOob = TmpName();
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_writer.Indented($"{anyOob} =w or {isNegative}, {isOob}");
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var oobLabel = LabelName();
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var notOobLabel = LabelName();
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_writer.Indented($"jnz {anyOob}, {oobLabel}, {notOobLabel}");
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_writer.Indented(oobLabel);
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_writer.Indented($"call $nub_panic_array_oob()");
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_writer.Indented(notOobLabel);
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}
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private Val EmitArrayInitializer(ArrayInitializerNode arrayInitializer)
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{
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var capacity = EmitUnwrap(EmitExpression(arrayInitializer.Capacity));
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var elementSize = SizeOf(arrayInitializer.ElementType);
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var capacityInBytes = TmpName();
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_writer.Indented($"{capacityInBytes} =l mul {capacity}, {elementSize}");
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var totalSize = TmpName();
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_writer.Indented($"{totalSize} =l add {capacityInBytes}, 8");
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var arrayPointer = TmpName();
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_writer.Indented($"{arrayPointer} =l alloc8 {totalSize}");
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_writer.Indented($"storel {capacity}, {arrayPointer}");
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var dataPointer = TmpName();
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_writer.Indented($"{dataPointer} =l add {arrayPointer}, 8");
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_writer.Indented($"call $nub_memset(l {dataPointer}, w 0, l {capacityInBytes})");
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return new Val(arrayPointer, arrayInitializer.Type, ValKind.Direct);
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}
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private Val EmitDereference(DereferenceNode dereference)
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{
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return EmitLoad(dereference.Type, EmitUnwrap(EmitExpression(dereference.Expression)));
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}
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private Val EmitAddressOf(AddressOfNode addressOf)
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{
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var value = EmitExpression(addressOf.Expression);
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if (value.Kind != ValKind.Pointer)
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{
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throw new UnreachableException("Tried to take address of non-pointer type. This should have been caught in the type checker");
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}
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return new Val(value.Name, addressOf.Type, ValKind.Direct);
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}
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private Val EmitBinaryExpression(BinaryExpressionNode binaryExpression)
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{
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var left = EmitUnwrap(EmitExpression(binaryExpression.Left));
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var right = EmitUnwrap(EmitExpression(binaryExpression.Right));
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var outputName = TmpName();
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var instruction = EmitBinaryInstructionFor(binaryExpression.Operator, binaryExpression.Left.Type, left, right);
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_writer.Indented($"{outputName} {QBEAssign(binaryExpression.Left.Type)} {instruction} {left}, {right}");
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return new Val(outputName, binaryExpression.Type, ValKind.Direct);
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}
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private string EmitBinaryInstructionFor(BinaryOperator op, TypeNode type, string left, string right)
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{
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if (op is
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BinaryOperator.Equal or
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BinaryOperator.NotEqual or
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BinaryOperator.GreaterThan or
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BinaryOperator.GreaterThanOrEqual or
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BinaryOperator.LessThan or
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BinaryOperator.LessThanOrEqual)
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{
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char suffix;
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if (!type.IsSimpleType(out var simpleType, out _))
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{
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throw new NotSupportedException("Binary operations is only supported for simple types.");
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}
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switch (simpleType.StorageSize)
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{
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case StorageSize.I8:
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_writer.Indented($"{left} =w extsb {left}");
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_writer.Indented($"{right} =w extsb {right}");
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suffix = 'w';
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break;
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case StorageSize.U8:
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_writer.Indented($"{left} =w extub {left}");
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_writer.Indented($"{right} =w extub {right}");
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suffix = 'w';
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break;
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case StorageSize.I16:
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_writer.Indented($"{left} =w extsh {left}");
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_writer.Indented($"{right} =w extsh {right}");
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suffix = 'w';
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break;
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case StorageSize.U16:
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_writer.Indented($"{left} =w extuh {left}");
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_writer.Indented($"{right} =w extuh {right}");
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suffix = 'w';
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break;
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case StorageSize.I32 or StorageSize.U32:
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suffix = 'w';
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break;
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case StorageSize.I64 or StorageSize.U64:
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suffix = 'l';
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break;
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default:
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throw new NotSupportedException($"Unsupported type '{simpleType}' for binary operator '{op}'");
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}
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if (op is BinaryOperator.Equal)
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{
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return "ceq" + suffix;
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}
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if (op is BinaryOperator.NotEqual)
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{
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return "cne" + suffix;
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}
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string sign;
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if (simpleType is IntTypeNode { Signed: true })
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{
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sign = "s";
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}
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else if (simpleType is IntTypeNode { Signed: false })
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{
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sign = "u";
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}
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else
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{
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throw new NotSupportedException($"Unsupported type '{type}' for binary operator '{op}'");
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}
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return op switch
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{
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BinaryOperator.GreaterThan => 'c' + sign + "gt" + suffix,
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BinaryOperator.GreaterThanOrEqual => 'c' + sign + "ge" + suffix,
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BinaryOperator.LessThan => 'c' + sign + "lt" + suffix,
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BinaryOperator.LessThanOrEqual => 'c' + sign + "le" + suffix,
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_ => throw new ArgumentOutOfRangeException(nameof(op), op, null)
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};
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}
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return op switch
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{
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BinaryOperator.Plus => "add",
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BinaryOperator.Minus => "sub",
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BinaryOperator.Multiply => "mul",
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BinaryOperator.Divide => "div",
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_ => throw new ArgumentOutOfRangeException(nameof(op))
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};
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}
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private Val EmitExternFuncIdent(ExternFuncIdentNode externFuncIdent)
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{
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var func = _definitionTable.LookupExternFunc(externFuncIdent.Name);
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return new Val(ExternFuncName(func), externFuncIdent.Type, ValKind.Direct);
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}
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private Val EmitLocalFuncIdent(LocalFuncIdentNode localFuncIdent)
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{
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var func = _definitionTable.LookupLocalFunc(localFuncIdent.Name);
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return new Val(LocalFuncName(func), localFuncIdent.Type, ValKind.Direct);
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}
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private Val EmitVariableIdent(VariableIdentNode variableIdent)
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{
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return Scope.Lookup(variableIdent.Name);
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}
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private Val EmitLiteral(LiteralNode literal)
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{
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switch (literal.Kind)
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{
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case LiteralKind.Integer:
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{
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if (literal.Type is FloatTypeNode { Width: 32 })
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{
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var value = float.Parse(literal.Value, CultureInfo.InvariantCulture);
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var bits = BitConverter.SingleToInt32Bits(value);
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return new Val(bits.ToString(), literal.Type, ValKind.Direct);
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}
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if (literal.Type is FloatTypeNode { Width: 64 })
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{
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var value = double.Parse(literal.Value, CultureInfo.InvariantCulture);
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var bits = BitConverter.DoubleToInt64Bits(value);
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return new Val(bits.ToString(), literal.Type, ValKind.Direct);
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}
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if (literal.Type is IntTypeNode)
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{
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return new Val(literal.Value, literal.Type, ValKind.Direct);
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}
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break;
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}
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case LiteralKind.Float:
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{
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if (literal.Type is IntTypeNode)
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{
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return new Val(literal.Value.Split(".").First(), literal.Type, ValKind.Direct);
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}
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if (literal.Type is FloatTypeNode { Width: 32 })
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{
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var value = float.Parse(literal.Value, CultureInfo.InvariantCulture);
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var bits = BitConverter.SingleToInt32Bits(value);
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return new Val(bits.ToString(), literal.Type, ValKind.Direct);
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}
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if (literal.Type is FloatTypeNode { Width: 64 })
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{
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var value = double.Parse(literal.Value, CultureInfo.InvariantCulture);
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var bits = BitConverter.DoubleToInt64Bits(value);
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return new Val(bits.ToString(), literal.Type, ValKind.Direct);
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}
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break;
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}
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case LiteralKind.String:
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{
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if (literal.Type is StringTypeNode)
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{
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var stringLiteral = new StringLiteral(literal.Value, StringName());
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_stringLiterals.Add(stringLiteral);
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return new Val(stringLiteral.Name, literal.Type, ValKind.Direct);
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}
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if (literal.Type is CStringTypeNode)
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{
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var cStringLiteral = new CStringLiteral(literal.Value, CStringName());
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_cStringLiterals.Add(cStringLiteral);
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return new Val(cStringLiteral.Name, literal.Type, ValKind.Direct);
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}
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break;
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}
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case LiteralKind.Bool:
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{
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if (literal.Type is BoolTypeNode)
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{
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return new Val(bool.Parse(literal.Value) ? "1" : "0", literal.Type, ValKind.Direct);
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}
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break;
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}
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}
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throw new NotSupportedException($"Cannot create literal of kind '{literal.Kind}' for type {literal.Type}");
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}
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private Val EmitStructInitializer(StructInitializerNode structInitializer, string? destination = null)
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{
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var structDef = _definitionTable.LookupStruct(structInitializer.StructType.Name);
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if (destination == null)
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{
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destination = TmpName();
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var size = SizeOf(structInitializer.StructType);
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_writer.Indented($"{destination} =l alloc8 {size}");
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}
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foreach (var field in structDef.Fields)
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{
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if (!structInitializer.Initializers.TryGetValue(field.Name, out var valueExpression))
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{
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valueExpression = field.Value.Value;
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}
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if (valueExpression == null)
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{
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throw new UnreachableException("Value of field in uninitialized. This should have been caught in the type checker");
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}
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var offset = TmpName();
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_writer.Indented($"{offset} =l add {destination}, {OffsetOf(structDef, field.Name)}");
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EmitCopyIntoOrInitialize(valueExpression, offset);
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}
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return new Val(destination, structInitializer.StructType, ValKind.Direct);
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}
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private Val EmitUnaryExpression(UnaryExpressionNode unaryExpression)
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{
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var operand = EmitUnwrap(EmitExpression(unaryExpression.Operand));
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var outputName = TmpName();
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switch (unaryExpression.Operator)
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{
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case UnaryOperator.Negate:
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{
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switch (unaryExpression.Operand.Type)
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{
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case IntTypeNode { Signed: true, Width: 64 }:
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_writer.Indented($"{outputName} =l neg {operand}");
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return new Val(outputName, unaryExpression.Type, ValKind.Direct);
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case IntTypeNode { Signed: true, Width: 8 or 16 or 32 }:
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_writer.Indented($"{outputName} =w neg {operand}");
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return new Val(outputName, unaryExpression.Type, ValKind.Direct);
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case FloatTypeNode { Width: 64 }:
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_writer.Indented($"{outputName} =d neg {operand}");
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return new Val(outputName, unaryExpression.Type, ValKind.Direct);
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case FloatTypeNode { Width: 32 }:
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_writer.Indented($"{outputName} =s neg {operand}");
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return new Val(outputName, unaryExpression.Type, ValKind.Direct);
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}
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break;
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}
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case UnaryOperator.Invert:
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{
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switch (unaryExpression.Operand.Type)
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{
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case BoolTypeNode:
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_writer.Indented($"{outputName} =w xor {operand}, 1");
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return new Val(outputName, unaryExpression.Type, ValKind.Direct);
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}
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break;
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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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throw new NotSupportedException($"Unary operator {unaryExpression.Operator} for type {unaryExpression.Operand.Type} not supported");
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}
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private Val EmitStructFieldAccess(StructFieldAccessNode structFieldAccess)
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{
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var target = EmitUnwrap(EmitExpression(structFieldAccess.Target));
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var structDef = _definitionTable.LookupStruct(structFieldAccess.StructType.Name);
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var offset = OffsetOf(structDef, structFieldAccess.Field);
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var output = TmpName();
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_writer.Indented($"{output} =l add {target}, {offset}");
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// If the accessed member is an inline struct, it will not be a pointer
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if (structFieldAccess.Type is StructTypeNode)
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{
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return new Val(output, structFieldAccess.Type, ValKind.Direct);
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}
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return new Val(output, structFieldAccess.Type, ValKind.Pointer);
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}
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private Val EmitStructFuncAccess(StructFuncAccessNode structFuncAccess)
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{
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var structDef = _definitionTable.LookupStruct(structFuncAccess.StructType.Name);
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var func = StructFuncName(structDef.Name, structFuncAccess.Func);
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return new Val(func, structFuncAccess.Type, ValKind.Direct);
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}
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private Val EmitStructFuncCall(StructFuncCallNode structFuncCall)
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{
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var expression = EmitExpression(structFuncCall.Expression);
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var thisParameter = EmitUnwrap(EmitExpression(structFuncCall.StructExpression));
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List<string> parameterStrings = [$"l {thisParameter}"];
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foreach (var parameter in structFuncCall.Parameters)
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{
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var copy = EmitCreateCopyOrInitialize(parameter);
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parameterStrings.Add($"{FuncQBETypeName(parameter.Type)} {copy}");
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}
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var funcPointer = EmitUnwrap(expression);
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if (structFuncCall.Type is VoidTypeNode)
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{
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_writer.Indented($"call {funcPointer}({string.Join(", ", parameterStrings)})");
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return new Val(string.Empty, structFuncCall.Type, ValKind.Direct);
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}
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else
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{
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var outputName = TmpName();
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_writer.Indented($"{outputName} {QBEAssign(structFuncCall.Type)} call {funcPointer}({string.Join(", ", parameterStrings)})");
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return new Val(outputName, structFuncCall.Type, ValKind.Direct);
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}
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}
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private Val EmitInterfaceFuncAccess(InterfaceFuncAccessNode interfaceFuncAccess)
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{
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var target = EmitUnwrap(EmitExpression(interfaceFuncAccess.Target));
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var interfaceDef = _definitionTable.LookupInterface(interfaceFuncAccess.InterfaceType.Name);
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var functionIndex = interfaceDef.Functions.ToList().FindIndex(x => x.Name == interfaceFuncAccess.FuncName);
|
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var offset = functionIndex * 8;
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|
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var vtable = TmpName();
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_writer.Indented($"{vtable} =l loadl {target}");
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||||
|
||||
var funcOffset = TmpName();
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||||
_writer.Indented($"{funcOffset} =l add {vtable}, {offset}");
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||||
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||||
var func = TmpName();
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_writer.Indented($"{func} =l loadl {funcOffset}");
|
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return new Val(func, interfaceFuncAccess.Type, ValKind.Direct);
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}
|
||||
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private Val EmitInterfaceFuncCall(InterfaceFuncCallNode interfaceFuncCall)
|
||||
{
|
||||
var expression = EmitExpression(interfaceFuncCall.Expression);
|
||||
|
||||
var thisParameter = EmitUnwrap(EmitExpression(interfaceFuncCall.InterfaceExpression));
|
||||
_writer.Indented($"{thisParameter} =l add {thisParameter}, 8");
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||||
_writer.Indented($"{thisParameter} =l loadl {thisParameter}");
|
||||
|
||||
List<string> parameterStrings = [$"l {thisParameter}"];
|
||||
|
||||
foreach (var parameter in interfaceFuncCall.Parameters)
|
||||
{
|
||||
var copy = EmitCreateCopyOrInitialize(parameter);
|
||||
parameterStrings.Add($"{FuncQBETypeName(parameter.Type)} {copy}");
|
||||
}
|
||||
|
||||
var funcPointer = EmitUnwrap(expression);
|
||||
if (interfaceFuncCall.Type is VoidTypeNode)
|
||||
{
|
||||
_writer.Indented($"call {funcPointer}({string.Join(", ", parameterStrings)})");
|
||||
return new Val(string.Empty, interfaceFuncCall.Type, ValKind.Direct);
|
||||
}
|
||||
else
|
||||
{
|
||||
var outputName = TmpName();
|
||||
_writer.Indented($"{outputName} {QBEAssign(interfaceFuncCall.Type)} call {funcPointer}({string.Join(", ", parameterStrings)})");
|
||||
return new Val(outputName, interfaceFuncCall.Type, ValKind.Direct);
|
||||
}
|
||||
}
|
||||
|
||||
private Val EmitInterfaceInitializer(InterfaceInitializerNode interfaceInitializer, string? destination = null)
|
||||
{
|
||||
var implementation = EmitUnwrap(EmitExpression(interfaceInitializer.Implementation));
|
||||
|
||||
var vtableOffset = 0;
|
||||
foreach (var interfaceImplementation in interfaceInitializer.StructType.InterfaceImplementations)
|
||||
{
|
||||
if (interfaceImplementation == interfaceInitializer.InterfaceType)
|
||||
{
|
||||
break;
|
||||
}
|
||||
|
||||
vtableOffset += interfaceImplementation.Functions.Count * 8;
|
||||
}
|
||||
|
||||
if (destination == null)
|
||||
{
|
||||
destination = TmpName();
|
||||
_writer.Indented($"{destination} =l alloc8 {SizeOf(interfaceInitializer.InterfaceType)}");
|
||||
}
|
||||
|
||||
var interfaceVtablePointer = TmpName();
|
||||
_writer.Indented($"{interfaceVtablePointer} =l add {StructVtableName(interfaceInitializer.StructType.Name)}, {vtableOffset}");
|
||||
_writer.Indented($"storel {interfaceVtablePointer}, {destination}");
|
||||
|
||||
var objectPointer = TmpName();
|
||||
_writer.Indented($"{objectPointer} =l add {destination}, 8");
|
||||
_writer.Indented($"storel {implementation}, {objectPointer}");
|
||||
|
||||
return new Val(destination, interfaceInitializer.InterfaceType, ValKind.Direct);
|
||||
}
|
||||
|
||||
private Val EmitFuncCall(FuncCallNode funcCall)
|
||||
{
|
||||
var expression = EmitExpression(funcCall.Expression);
|
||||
|
||||
var parameterStrings = new List<string>();
|
||||
|
||||
foreach (var parameter in funcCall.Parameters)
|
||||
{
|
||||
var copy = EmitCreateCopyOrInitialize(parameter);
|
||||
parameterStrings.Add($"{FuncQBETypeName(parameter.Type)} {copy}");
|
||||
}
|
||||
|
||||
var funcPointer = EmitUnwrap(expression);
|
||||
if (funcCall.Type is VoidTypeNode)
|
||||
{
|
||||
_writer.Indented($"call {funcPointer}({string.Join(", ", parameterStrings)})");
|
||||
return new Val(string.Empty, funcCall.Type, ValKind.Direct);
|
||||
}
|
||||
else
|
||||
{
|
||||
var outputName = TmpName();
|
||||
_writer.Indented($"{outputName} {QBEAssign(funcCall.Type)} call {funcPointer}({string.Join(", ", parameterStrings)})");
|
||||
return new Val(outputName, funcCall.Type, ValKind.Direct);
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -1,135 +0,0 @@
|
||||
using System.Diagnostics;
|
||||
using NubLang.TypeChecking.Node;
|
||||
|
||||
namespace NubLang.Generation.QBE;
|
||||
|
||||
public partial class QBEGenerator
|
||||
{
|
||||
private void EmitStatement(StatementNode statement)
|
||||
{
|
||||
switch (statement)
|
||||
{
|
||||
case AssignmentNode assignment:
|
||||
EmitAssignment(assignment);
|
||||
break;
|
||||
case BreakNode:
|
||||
EmitBreak();
|
||||
break;
|
||||
case ContinueNode:
|
||||
EmitContinue();
|
||||
break;
|
||||
case IfNode ifStatement:
|
||||
EmitIf(ifStatement);
|
||||
break;
|
||||
case ReturnNode @return:
|
||||
EmitReturn(@return);
|
||||
break;
|
||||
case StatementExpressionNode statementExpression:
|
||||
EmitExpression(statementExpression.Expression);
|
||||
break;
|
||||
case VariableDeclarationNode variableDeclaration:
|
||||
EmitVariableDeclaration(variableDeclaration);
|
||||
break;
|
||||
case WhileNode whileStatement:
|
||||
EmitWhile(whileStatement);
|
||||
break;
|
||||
default:
|
||||
throw new ArgumentOutOfRangeException(nameof(statement));
|
||||
}
|
||||
}
|
||||
|
||||
private void EmitAssignment(AssignmentNode assignment)
|
||||
{
|
||||
var destination = EmitExpression(assignment.Target);
|
||||
if (destination.Kind != ValKind.Pointer)
|
||||
{
|
||||
throw new UnreachableException("Destination of assignment must be a pointer. This should be caught in the type checker");
|
||||
}
|
||||
|
||||
EmitCopyIntoOrInitialize(assignment.Value, destination.Name);
|
||||
}
|
||||
|
||||
private void EmitBreak()
|
||||
{
|
||||
_writer.Indented($"jmp {_breakLabels.Peek()}");
|
||||
_codeIsReachable = false;
|
||||
}
|
||||
|
||||
private void EmitContinue()
|
||||
{
|
||||
_writer.Indented($"jmp {_continueLabels.Peek()}");
|
||||
_codeIsReachable = false;
|
||||
}
|
||||
|
||||
private void EmitIf(IfNode ifStatement)
|
||||
{
|
||||
var trueLabel = LabelName();
|
||||
var falseLabel = LabelName();
|
||||
var endLabel = LabelName();
|
||||
|
||||
var result = EmitUnwrap(EmitExpression(ifStatement.Condition));
|
||||
_writer.Indented($"jnz {result}, {trueLabel}, {falseLabel}");
|
||||
_writer.WriteLine(trueLabel);
|
||||
EmitBlock(ifStatement.Body);
|
||||
_writer.Indented($"jmp {endLabel}");
|
||||
_writer.WriteLine(falseLabel);
|
||||
if (ifStatement.Else.HasValue)
|
||||
{
|
||||
ifStatement.Else.Value.Match
|
||||
(
|
||||
elseIfNode => EmitIf(elseIfNode),
|
||||
elseNode => EmitBlock(elseNode)
|
||||
);
|
||||
}
|
||||
|
||||
_writer.WriteLine(endLabel);
|
||||
}
|
||||
|
||||
private void EmitReturn(ReturnNode @return)
|
||||
{
|
||||
if (@return.Value.HasValue)
|
||||
{
|
||||
var result = EmitUnwrap(EmitExpression(@return.Value.Value));
|
||||
_writer.Indented($"ret {result}");
|
||||
}
|
||||
else
|
||||
{
|
||||
_writer.Indented("ret");
|
||||
}
|
||||
}
|
||||
|
||||
private void EmitVariableDeclaration(VariableDeclarationNode variableDeclaration)
|
||||
{
|
||||
var name = $"%{variableDeclaration.Name}";
|
||||
_writer.Indented($"{name} =l alloc8 8");
|
||||
|
||||
if (variableDeclaration.Assignment.HasValue)
|
||||
{
|
||||
var value = EmitCreateCopyOrInitialize(variableDeclaration.Assignment.Value);
|
||||
EmitStore(variableDeclaration.Assignment.Value.Type, value, name);
|
||||
}
|
||||
|
||||
Scope.Declare(variableDeclaration.Name, new Val(name, variableDeclaration.Type, ValKind.Pointer));
|
||||
}
|
||||
|
||||
private void EmitWhile(WhileNode whileStatement)
|
||||
{
|
||||
var conditionLabel = LabelName();
|
||||
var iterationLabel = LabelName();
|
||||
var endLabel = LabelName();
|
||||
|
||||
_breakLabels.Push(endLabel);
|
||||
_continueLabels.Push(conditionLabel);
|
||||
|
||||
_writer.Indented($"jmp {conditionLabel}");
|
||||
_writer.WriteLine(iterationLabel);
|
||||
EmitBlock(whileStatement.Body);
|
||||
_writer.WriteLine(conditionLabel);
|
||||
var result = EmitUnwrap(EmitExpression(whileStatement.Condition));
|
||||
_writer.Indented($"jnz {result}, {iterationLabel}, {endLabel}");
|
||||
_writer.WriteLine(endLabel);
|
||||
|
||||
_continueLabels.Pop();
|
||||
_breakLabels.Pop();
|
||||
}
|
||||
}
|
||||
@@ -1,12 +1,13 @@
|
||||
using System.Diagnostics;
|
||||
using System.Diagnostics.CodeAnalysis;
|
||||
using System.Globalization;
|
||||
using System.Text;
|
||||
using NubLang.Tokenization;
|
||||
using NubLang.TypeChecking.Node;
|
||||
|
||||
namespace NubLang.Generation.QBE;
|
||||
|
||||
public partial class QBEGenerator
|
||||
public class QBEGenerator
|
||||
{
|
||||
private readonly TypedSyntaxTree _syntaxTree;
|
||||
private readonly TypedDefinitionTable _definitionTable;
|
||||
@@ -495,6 +496,683 @@ public partial class QBEGenerator
|
||||
_codeIsReachable = true;
|
||||
}
|
||||
|
||||
private void EmitStatement(StatementNode statement)
|
||||
{
|
||||
switch (statement)
|
||||
{
|
||||
case AssignmentNode assignment:
|
||||
EmitAssignment(assignment);
|
||||
break;
|
||||
case BreakNode:
|
||||
EmitBreak();
|
||||
break;
|
||||
case ContinueNode:
|
||||
EmitContinue();
|
||||
break;
|
||||
case IfNode ifStatement:
|
||||
EmitIf(ifStatement);
|
||||
break;
|
||||
case ReturnNode @return:
|
||||
EmitReturn(@return);
|
||||
break;
|
||||
case StatementExpressionNode statementExpression:
|
||||
EmitExpression(statementExpression.Expression);
|
||||
break;
|
||||
case VariableDeclarationNode variableDeclaration:
|
||||
EmitVariableDeclaration(variableDeclaration);
|
||||
break;
|
||||
case WhileNode whileStatement:
|
||||
EmitWhile(whileStatement);
|
||||
break;
|
||||
default:
|
||||
throw new ArgumentOutOfRangeException(nameof(statement));
|
||||
}
|
||||
}
|
||||
|
||||
private void EmitAssignment(AssignmentNode assignment)
|
||||
{
|
||||
var destination = EmitExpression(assignment.Target);
|
||||
if (destination.Kind != ValKind.Pointer)
|
||||
{
|
||||
throw new UnreachableException("Destination of assignment must be a pointer. This should be caught in the type checker");
|
||||
}
|
||||
|
||||
EmitCopyIntoOrInitialize(assignment.Value, destination.Name);
|
||||
}
|
||||
|
||||
private void EmitBreak()
|
||||
{
|
||||
_writer.Indented($"jmp {_breakLabels.Peek()}");
|
||||
_codeIsReachable = false;
|
||||
}
|
||||
|
||||
private void EmitContinue()
|
||||
{
|
||||
_writer.Indented($"jmp {_continueLabels.Peek()}");
|
||||
_codeIsReachable = false;
|
||||
}
|
||||
|
||||
private void EmitIf(IfNode ifStatement)
|
||||
{
|
||||
var trueLabel = LabelName();
|
||||
var falseLabel = LabelName();
|
||||
var endLabel = LabelName();
|
||||
|
||||
var result = EmitUnwrap(EmitExpression(ifStatement.Condition));
|
||||
_writer.Indented($"jnz {result}, {trueLabel}, {falseLabel}");
|
||||
_writer.WriteLine(trueLabel);
|
||||
EmitBlock(ifStatement.Body);
|
||||
_writer.Indented($"jmp {endLabel}");
|
||||
_writer.WriteLine(falseLabel);
|
||||
if (ifStatement.Else.HasValue)
|
||||
{
|
||||
ifStatement.Else.Value.Match
|
||||
(
|
||||
elseIfNode => EmitIf(elseIfNode),
|
||||
elseNode => EmitBlock(elseNode)
|
||||
);
|
||||
}
|
||||
|
||||
_writer.WriteLine(endLabel);
|
||||
}
|
||||
|
||||
private void EmitReturn(ReturnNode @return)
|
||||
{
|
||||
if (@return.Value.HasValue)
|
||||
{
|
||||
var result = EmitUnwrap(EmitExpression(@return.Value.Value));
|
||||
_writer.Indented($"ret {result}");
|
||||
}
|
||||
else
|
||||
{
|
||||
_writer.Indented("ret");
|
||||
}
|
||||
}
|
||||
|
||||
private void EmitVariableDeclaration(VariableDeclarationNode variableDeclaration)
|
||||
{
|
||||
var name = $"%{variableDeclaration.Name}";
|
||||
_writer.Indented($"{name} =l alloc8 8");
|
||||
|
||||
if (variableDeclaration.Assignment.HasValue)
|
||||
{
|
||||
var value = EmitCreateCopyOrInitialize(variableDeclaration.Assignment.Value);
|
||||
EmitStore(variableDeclaration.Assignment.Value.Type, value, name);
|
||||
}
|
||||
|
||||
Scope.Declare(variableDeclaration.Name, new Val(name, variableDeclaration.Type, ValKind.Pointer));
|
||||
}
|
||||
|
||||
private void EmitWhile(WhileNode whileStatement)
|
||||
{
|
||||
var conditionLabel = LabelName();
|
||||
var iterationLabel = LabelName();
|
||||
var endLabel = LabelName();
|
||||
|
||||
_breakLabels.Push(endLabel);
|
||||
_continueLabels.Push(conditionLabel);
|
||||
|
||||
_writer.Indented($"jmp {conditionLabel}");
|
||||
_writer.WriteLine(iterationLabel);
|
||||
EmitBlock(whileStatement.Body);
|
||||
_writer.WriteLine(conditionLabel);
|
||||
var result = EmitUnwrap(EmitExpression(whileStatement.Condition));
|
||||
_writer.Indented($"jnz {result}, {iterationLabel}, {endLabel}");
|
||||
_writer.WriteLine(endLabel);
|
||||
|
||||
_continueLabels.Pop();
|
||||
_breakLabels.Pop();
|
||||
}
|
||||
|
||||
private Val EmitExpression(ExpressionNode expression)
|
||||
{
|
||||
return expression switch
|
||||
{
|
||||
ArrayInitializerNode arrayInitializer => EmitArrayInitializer(arrayInitializer),
|
||||
StructInitializerNode structInitializer => EmitStructInitializer(structInitializer),
|
||||
AddressOfNode addressOf => EmitAddressOf(addressOf),
|
||||
DereferenceNode dereference => EmitDereference(dereference),
|
||||
BinaryExpressionNode binaryExpression => EmitBinaryExpression(binaryExpression),
|
||||
FuncCallNode funcCallExpression => EmitFuncCall(funcCallExpression),
|
||||
InterfaceFuncAccessNode interfaceFuncAccess => EmitInterfaceFuncAccess(interfaceFuncAccess),
|
||||
InterfaceFuncCallNode interfaceFuncCall => EmitInterfaceFuncCall(interfaceFuncCall),
|
||||
InterfaceInitializerNode interfaceInitializer => EmitInterfaceInitializer(interfaceInitializer),
|
||||
ExternFuncIdentNode externFuncIdent => EmitExternFuncIdent(externFuncIdent),
|
||||
LocalFuncIdentNode localFuncIdent => EmitLocalFuncIdent(localFuncIdent),
|
||||
VariableIdentNode variableIdent => EmitVariableIdent(variableIdent),
|
||||
LiteralNode literal => EmitLiteral(literal),
|
||||
UnaryExpressionNode unaryExpression => EmitUnaryExpression(unaryExpression),
|
||||
StructFieldAccessNode structFieldAccess => EmitStructFieldAccess(structFieldAccess),
|
||||
StructFuncAccessNode structFuncAccess => EmitStructFuncAccess(structFuncAccess),
|
||||
StructFuncCallNode structFuncCall => EmitStructFuncCall(structFuncCall),
|
||||
ArrayIndexAccessNode arrayIndex => EmitArrayIndexAccess(arrayIndex),
|
||||
_ => throw new ArgumentOutOfRangeException(nameof(expression))
|
||||
};
|
||||
}
|
||||
|
||||
private Val EmitArrayIndexAccess(ArrayIndexAccessNode arrayIndexAccess)
|
||||
{
|
||||
var array = EmitUnwrap(EmitExpression(arrayIndexAccess.Target));
|
||||
var index = EmitUnwrap(EmitExpression(arrayIndexAccess.Index));
|
||||
|
||||
EmitArraysCheck(array, index);
|
||||
|
||||
var elementType = ((ArrayTypeNode)arrayIndexAccess.Target.Type).ElementType;
|
||||
|
||||
var pointer = TmpName();
|
||||
_writer.Indented($"{pointer} =l mul {index}, {SizeOf(elementType)}");
|
||||
_writer.Indented($"{pointer} =l add {pointer}, 8");
|
||||
_writer.Indented($"{pointer} =l add {array}, {pointer}");
|
||||
return new Val(pointer, arrayIndexAccess.Type, ValKind.Pointer);
|
||||
}
|
||||
|
||||
private void EmitArraysCheck(string array, string index)
|
||||
{
|
||||
var count = TmpName();
|
||||
_writer.Indented($"{count} =l loadl {array}");
|
||||
|
||||
var isNegative = TmpName();
|
||||
_writer.Indented($"{isNegative} =w csltl {index}, 0");
|
||||
|
||||
var isOob = TmpName();
|
||||
_writer.Indented($"{isOob} =w csgel {index}, {count}");
|
||||
|
||||
var anyOob = TmpName();
|
||||
_writer.Indented($"{anyOob} =w or {isNegative}, {isOob}");
|
||||
|
||||
var oobLabel = LabelName();
|
||||
var notOobLabel = LabelName();
|
||||
_writer.Indented($"jnz {anyOob}, {oobLabel}, {notOobLabel}");
|
||||
|
||||
_writer.Indented(oobLabel);
|
||||
_writer.Indented($"call $nub_panic_array_oob()");
|
||||
|
||||
_writer.Indented(notOobLabel);
|
||||
}
|
||||
|
||||
private Val EmitArrayInitializer(ArrayInitializerNode arrayInitializer)
|
||||
{
|
||||
var capacity = EmitUnwrap(EmitExpression(arrayInitializer.Capacity));
|
||||
var elementSize = SizeOf(arrayInitializer.ElementType);
|
||||
|
||||
var capacityInBytes = TmpName();
|
||||
_writer.Indented($"{capacityInBytes} =l mul {capacity}, {elementSize}");
|
||||
var totalSize = TmpName();
|
||||
_writer.Indented($"{totalSize} =l add {capacityInBytes}, 8");
|
||||
|
||||
var arrayPointer = TmpName();
|
||||
_writer.Indented($"{arrayPointer} =l alloc8 {totalSize}");
|
||||
_writer.Indented($"storel {capacity}, {arrayPointer}");
|
||||
|
||||
var dataPointer = TmpName();
|
||||
_writer.Indented($"{dataPointer} =l add {arrayPointer}, 8");
|
||||
_writer.Indented($"call $nub_memset(l {dataPointer}, w 0, l {capacityInBytes})");
|
||||
|
||||
return new Val(arrayPointer, arrayInitializer.Type, ValKind.Direct);
|
||||
}
|
||||
|
||||
private Val EmitDereference(DereferenceNode dereference)
|
||||
{
|
||||
return EmitLoad(dereference.Type, EmitUnwrap(EmitExpression(dereference.Expression)));
|
||||
}
|
||||
|
||||
private Val EmitAddressOf(AddressOfNode addressOf)
|
||||
{
|
||||
var value = EmitExpression(addressOf.Expression);
|
||||
if (value.Kind != ValKind.Pointer)
|
||||
{
|
||||
throw new UnreachableException("Tried to take address of non-pointer type. This should have been caught in the type checker");
|
||||
}
|
||||
|
||||
return new Val(value.Name, addressOf.Type, ValKind.Direct);
|
||||
}
|
||||
|
||||
private Val EmitBinaryExpression(BinaryExpressionNode binaryExpression)
|
||||
{
|
||||
var left = EmitUnwrap(EmitExpression(binaryExpression.Left));
|
||||
var right = EmitUnwrap(EmitExpression(binaryExpression.Right));
|
||||
|
||||
var outputName = TmpName();
|
||||
|
||||
var instruction = EmitBinaryInstructionFor(binaryExpression.Operator, binaryExpression.Left.Type, left, right);
|
||||
|
||||
_writer.Indented($"{outputName} {QBEAssign(binaryExpression.Left.Type)} {instruction} {left}, {right}");
|
||||
return new Val(outputName, binaryExpression.Type, ValKind.Direct);
|
||||
}
|
||||
|
||||
private string EmitBinaryInstructionFor(BinaryOperator op, TypeNode type, string left, string right)
|
||||
{
|
||||
if (op is
|
||||
BinaryOperator.Equal or
|
||||
BinaryOperator.NotEqual or
|
||||
BinaryOperator.GreaterThan or
|
||||
BinaryOperator.GreaterThanOrEqual or
|
||||
BinaryOperator.LessThan or
|
||||
BinaryOperator.LessThanOrEqual)
|
||||
{
|
||||
char suffix;
|
||||
|
||||
if (!type.IsSimpleType(out var simpleType, out _))
|
||||
{
|
||||
throw new NotSupportedException("Binary operations is only supported for simple types.");
|
||||
}
|
||||
|
||||
switch (simpleType.StorageSize)
|
||||
{
|
||||
case StorageSize.I8:
|
||||
_writer.Indented($"{left} =w extsb {left}");
|
||||
_writer.Indented($"{right} =w extsb {right}");
|
||||
suffix = 'w';
|
||||
break;
|
||||
case StorageSize.U8:
|
||||
_writer.Indented($"{left} =w extub {left}");
|
||||
_writer.Indented($"{right} =w extub {right}");
|
||||
suffix = 'w';
|
||||
break;
|
||||
case StorageSize.I16:
|
||||
_writer.Indented($"{left} =w extsh {left}");
|
||||
_writer.Indented($"{right} =w extsh {right}");
|
||||
suffix = 'w';
|
||||
break;
|
||||
case StorageSize.U16:
|
||||
_writer.Indented($"{left} =w extuh {left}");
|
||||
_writer.Indented($"{right} =w extuh {right}");
|
||||
suffix = 'w';
|
||||
break;
|
||||
case StorageSize.I32 or StorageSize.U32:
|
||||
suffix = 'w';
|
||||
break;
|
||||
case StorageSize.I64 or StorageSize.U64:
|
||||
suffix = 'l';
|
||||
break;
|
||||
default:
|
||||
throw new NotSupportedException($"Unsupported type '{simpleType}' for binary operator '{op}'");
|
||||
}
|
||||
|
||||
if (op is BinaryOperator.Equal)
|
||||
{
|
||||
return "ceq" + suffix;
|
||||
}
|
||||
|
||||
if (op is BinaryOperator.NotEqual)
|
||||
{
|
||||
return "cne" + suffix;
|
||||
}
|
||||
|
||||
string sign;
|
||||
|
||||
if (simpleType is IntTypeNode { Signed: true })
|
||||
{
|
||||
sign = "s";
|
||||
}
|
||||
else if (simpleType is IntTypeNode { Signed: false })
|
||||
{
|
||||
sign = "u";
|
||||
}
|
||||
else
|
||||
{
|
||||
throw new NotSupportedException($"Unsupported type '{type}' for binary operator '{op}'");
|
||||
}
|
||||
|
||||
return op switch
|
||||
{
|
||||
BinaryOperator.GreaterThan => 'c' + sign + "gt" + suffix,
|
||||
BinaryOperator.GreaterThanOrEqual => 'c' + sign + "ge" + suffix,
|
||||
BinaryOperator.LessThan => 'c' + sign + "lt" + suffix,
|
||||
BinaryOperator.LessThanOrEqual => 'c' + sign + "le" + suffix,
|
||||
_ => throw new ArgumentOutOfRangeException(nameof(op), op, null)
|
||||
};
|
||||
}
|
||||
|
||||
return op switch
|
||||
{
|
||||
BinaryOperator.Plus => "add",
|
||||
BinaryOperator.Minus => "sub",
|
||||
BinaryOperator.Multiply => "mul",
|
||||
BinaryOperator.Divide => "div",
|
||||
_ => throw new ArgumentOutOfRangeException(nameof(op))
|
||||
};
|
||||
}
|
||||
|
||||
private Val EmitExternFuncIdent(ExternFuncIdentNode externFuncIdent)
|
||||
{
|
||||
var func = _definitionTable.LookupExternFunc(externFuncIdent.Name);
|
||||
return new Val(ExternFuncName(func), externFuncIdent.Type, ValKind.Direct);
|
||||
}
|
||||
|
||||
private Val EmitLocalFuncIdent(LocalFuncIdentNode localFuncIdent)
|
||||
{
|
||||
var func = _definitionTable.LookupLocalFunc(localFuncIdent.Name);
|
||||
return new Val(LocalFuncName(func), localFuncIdent.Type, ValKind.Direct);
|
||||
}
|
||||
|
||||
private Val EmitVariableIdent(VariableIdentNode variableIdent)
|
||||
{
|
||||
return Scope.Lookup(variableIdent.Name);
|
||||
}
|
||||
|
||||
private Val EmitLiteral(LiteralNode literal)
|
||||
{
|
||||
switch (literal.Kind)
|
||||
{
|
||||
case LiteralKind.Integer:
|
||||
{
|
||||
if (literal.Type is FloatTypeNode { Width: 32 })
|
||||
{
|
||||
var value = float.Parse(literal.Value, CultureInfo.InvariantCulture);
|
||||
var bits = BitConverter.SingleToInt32Bits(value);
|
||||
return new Val(bits.ToString(), literal.Type, ValKind.Direct);
|
||||
}
|
||||
|
||||
if (literal.Type is FloatTypeNode { Width: 64 })
|
||||
{
|
||||
var value = double.Parse(literal.Value, CultureInfo.InvariantCulture);
|
||||
var bits = BitConverter.DoubleToInt64Bits(value);
|
||||
return new Val(bits.ToString(), literal.Type, ValKind.Direct);
|
||||
}
|
||||
|
||||
if (literal.Type is IntTypeNode)
|
||||
{
|
||||
return new Val(literal.Value, literal.Type, ValKind.Direct);
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
case LiteralKind.Float:
|
||||
{
|
||||
if (literal.Type is IntTypeNode)
|
||||
{
|
||||
return new Val(literal.Value.Split(".").First(), literal.Type, ValKind.Direct);
|
||||
}
|
||||
|
||||
if (literal.Type is FloatTypeNode { Width: 32 })
|
||||
{
|
||||
var value = float.Parse(literal.Value, CultureInfo.InvariantCulture);
|
||||
var bits = BitConverter.SingleToInt32Bits(value);
|
||||
return new Val(bits.ToString(), literal.Type, ValKind.Direct);
|
||||
}
|
||||
|
||||
if (literal.Type is FloatTypeNode { Width: 64 })
|
||||
{
|
||||
var value = double.Parse(literal.Value, CultureInfo.InvariantCulture);
|
||||
var bits = BitConverter.DoubleToInt64Bits(value);
|
||||
return new Val(bits.ToString(), literal.Type, ValKind.Direct);
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
case LiteralKind.String:
|
||||
{
|
||||
if (literal.Type is StringTypeNode)
|
||||
{
|
||||
var stringLiteral = new StringLiteral(literal.Value, StringName());
|
||||
_stringLiterals.Add(stringLiteral);
|
||||
return new Val(stringLiteral.Name, literal.Type, ValKind.Direct);
|
||||
}
|
||||
|
||||
if (literal.Type is CStringTypeNode)
|
||||
{
|
||||
var cStringLiteral = new CStringLiteral(literal.Value, CStringName());
|
||||
_cStringLiterals.Add(cStringLiteral);
|
||||
return new Val(cStringLiteral.Name, literal.Type, ValKind.Direct);
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
case LiteralKind.Bool:
|
||||
{
|
||||
if (literal.Type is BoolTypeNode)
|
||||
{
|
||||
return new Val(bool.Parse(literal.Value) ? "1" : "0", literal.Type, ValKind.Direct);
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
throw new NotSupportedException($"Cannot create literal of kind '{literal.Kind}' for type {literal.Type}");
|
||||
}
|
||||
|
||||
private Val EmitStructInitializer(StructInitializerNode structInitializer, string? destination = null)
|
||||
{
|
||||
var structDef = _definitionTable.LookupStruct(structInitializer.StructType.Name);
|
||||
|
||||
if (destination == null)
|
||||
{
|
||||
destination = TmpName();
|
||||
var size = SizeOf(structInitializer.StructType);
|
||||
_writer.Indented($"{destination} =l alloc8 {size}");
|
||||
}
|
||||
|
||||
foreach (var field in structDef.Fields)
|
||||
{
|
||||
if (!structInitializer.Initializers.TryGetValue(field.Name, out var valueExpression))
|
||||
{
|
||||
valueExpression = field.Value.Value;
|
||||
}
|
||||
|
||||
if (valueExpression == null)
|
||||
{
|
||||
throw new UnreachableException("Value of field in uninitialized. This should have been caught in the type checker");
|
||||
}
|
||||
|
||||
var offset = TmpName();
|
||||
_writer.Indented($"{offset} =l add {destination}, {OffsetOf(structDef, field.Name)}");
|
||||
EmitCopyIntoOrInitialize(valueExpression, offset);
|
||||
}
|
||||
|
||||
return new Val(destination, structInitializer.StructType, ValKind.Direct);
|
||||
}
|
||||
|
||||
private Val EmitUnaryExpression(UnaryExpressionNode unaryExpression)
|
||||
{
|
||||
var operand = EmitUnwrap(EmitExpression(unaryExpression.Operand));
|
||||
var outputName = TmpName();
|
||||
|
||||
switch (unaryExpression.Operator)
|
||||
{
|
||||
case UnaryOperator.Negate:
|
||||
{
|
||||
switch (unaryExpression.Operand.Type)
|
||||
{
|
||||
case IntTypeNode { Signed: true, Width: 64 }:
|
||||
_writer.Indented($"{outputName} =l neg {operand}");
|
||||
return new Val(outputName, unaryExpression.Type, ValKind.Direct);
|
||||
case IntTypeNode { Signed: true, Width: 8 or 16 or 32 }:
|
||||
_writer.Indented($"{outputName} =w neg {operand}");
|
||||
return new Val(outputName, unaryExpression.Type, ValKind.Direct);
|
||||
case FloatTypeNode { Width: 64 }:
|
||||
_writer.Indented($"{outputName} =d neg {operand}");
|
||||
return new Val(outputName, unaryExpression.Type, ValKind.Direct);
|
||||
case FloatTypeNode { Width: 32 }:
|
||||
_writer.Indented($"{outputName} =s neg {operand}");
|
||||
return new Val(outputName, unaryExpression.Type, ValKind.Direct);
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
case UnaryOperator.Invert:
|
||||
{
|
||||
switch (unaryExpression.Operand.Type)
|
||||
{
|
||||
case BoolTypeNode:
|
||||
_writer.Indented($"{outputName} =w xor {operand}, 1");
|
||||
return new Val(outputName, unaryExpression.Type, ValKind.Direct);
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
default:
|
||||
{
|
||||
throw new ArgumentOutOfRangeException();
|
||||
}
|
||||
}
|
||||
|
||||
throw new NotSupportedException($"Unary operator {unaryExpression.Operator} for type {unaryExpression.Operand.Type} not supported");
|
||||
}
|
||||
|
||||
private Val EmitStructFieldAccess(StructFieldAccessNode structFieldAccess)
|
||||
{
|
||||
var target = EmitUnwrap(EmitExpression(structFieldAccess.Target));
|
||||
|
||||
var structDef = _definitionTable.LookupStruct(structFieldAccess.StructType.Name);
|
||||
var offset = OffsetOf(structDef, structFieldAccess.Field);
|
||||
|
||||
var output = TmpName();
|
||||
_writer.Indented($"{output} =l add {target}, {offset}");
|
||||
|
||||
// If the accessed member is an inline struct, it will not be a pointer
|
||||
if (structFieldAccess.Type is StructTypeNode)
|
||||
{
|
||||
return new Val(output, structFieldAccess.Type, ValKind.Direct);
|
||||
}
|
||||
|
||||
return new Val(output, structFieldAccess.Type, ValKind.Pointer);
|
||||
}
|
||||
|
||||
private Val EmitStructFuncAccess(StructFuncAccessNode structFuncAccess)
|
||||
{
|
||||
var structDef = _definitionTable.LookupStruct(structFuncAccess.StructType.Name);
|
||||
var func = StructFuncName(structDef.Name, structFuncAccess.Func);
|
||||
|
||||
return new Val(func, structFuncAccess.Type, ValKind.Direct);
|
||||
}
|
||||
|
||||
private Val EmitStructFuncCall(StructFuncCallNode structFuncCall)
|
||||
{
|
||||
var expression = EmitExpression(structFuncCall.Expression);
|
||||
var thisParameter = EmitUnwrap(EmitExpression(structFuncCall.StructExpression));
|
||||
|
||||
List<string> parameterStrings = [$"l {thisParameter}"];
|
||||
|
||||
foreach (var parameter in structFuncCall.Parameters)
|
||||
{
|
||||
var copy = EmitCreateCopyOrInitialize(parameter);
|
||||
parameterStrings.Add($"{FuncQBETypeName(parameter.Type)} {copy}");
|
||||
}
|
||||
|
||||
var funcPointer = EmitUnwrap(expression);
|
||||
if (structFuncCall.Type is VoidTypeNode)
|
||||
{
|
||||
_writer.Indented($"call {funcPointer}({string.Join(", ", parameterStrings)})");
|
||||
return new Val(string.Empty, structFuncCall.Type, ValKind.Direct);
|
||||
}
|
||||
else
|
||||
{
|
||||
var outputName = TmpName();
|
||||
_writer.Indented($"{outputName} {QBEAssign(structFuncCall.Type)} call {funcPointer}({string.Join(", ", parameterStrings)})");
|
||||
return new Val(outputName, structFuncCall.Type, ValKind.Direct);
|
||||
}
|
||||
}
|
||||
|
||||
private Val EmitInterfaceFuncAccess(InterfaceFuncAccessNode interfaceFuncAccess)
|
||||
{
|
||||
var target = EmitUnwrap(EmitExpression(interfaceFuncAccess.Target));
|
||||
|
||||
var interfaceDef = _definitionTable.LookupInterface(interfaceFuncAccess.InterfaceType.Name);
|
||||
var functionIndex = interfaceDef.Functions.ToList().FindIndex(x => x.Name == interfaceFuncAccess.FuncName);
|
||||
var offset = functionIndex * 8;
|
||||
|
||||
var vtable = TmpName();
|
||||
_writer.Indented($"{vtable} =l loadl {target}");
|
||||
|
||||
var funcOffset = TmpName();
|
||||
_writer.Indented($"{funcOffset} =l add {vtable}, {offset}");
|
||||
|
||||
var func = TmpName();
|
||||
_writer.Indented($"{func} =l loadl {funcOffset}");
|
||||
|
||||
return new Val(func, interfaceFuncAccess.Type, ValKind.Direct);
|
||||
}
|
||||
|
||||
private Val EmitInterfaceFuncCall(InterfaceFuncCallNode interfaceFuncCall)
|
||||
{
|
||||
var expression = EmitExpression(interfaceFuncCall.Expression);
|
||||
|
||||
var thisParameter = EmitUnwrap(EmitExpression(interfaceFuncCall.InterfaceExpression));
|
||||
_writer.Indented($"{thisParameter} =l add {thisParameter}, 8");
|
||||
_writer.Indented($"{thisParameter} =l loadl {thisParameter}");
|
||||
|
||||
List<string> parameterStrings = [$"l {thisParameter}"];
|
||||
|
||||
foreach (var parameter in interfaceFuncCall.Parameters)
|
||||
{
|
||||
var copy = EmitCreateCopyOrInitialize(parameter);
|
||||
parameterStrings.Add($"{FuncQBETypeName(parameter.Type)} {copy}");
|
||||
}
|
||||
|
||||
var funcPointer = EmitUnwrap(expression);
|
||||
if (interfaceFuncCall.Type is VoidTypeNode)
|
||||
{
|
||||
_writer.Indented($"call {funcPointer}({string.Join(", ", parameterStrings)})");
|
||||
return new Val(string.Empty, interfaceFuncCall.Type, ValKind.Direct);
|
||||
}
|
||||
else
|
||||
{
|
||||
var outputName = TmpName();
|
||||
_writer.Indented($"{outputName} {QBEAssign(interfaceFuncCall.Type)} call {funcPointer}({string.Join(", ", parameterStrings)})");
|
||||
return new Val(outputName, interfaceFuncCall.Type, ValKind.Direct);
|
||||
}
|
||||
}
|
||||
|
||||
private Val EmitInterfaceInitializer(InterfaceInitializerNode interfaceInitializer, string? destination = null)
|
||||
{
|
||||
var implementation = EmitUnwrap(EmitExpression(interfaceInitializer.Implementation));
|
||||
|
||||
var vtableOffset = 0;
|
||||
foreach (var interfaceImplementation in interfaceInitializer.StructType.InterfaceImplementations)
|
||||
{
|
||||
if (interfaceImplementation == interfaceInitializer.InterfaceType)
|
||||
{
|
||||
break;
|
||||
}
|
||||
|
||||
vtableOffset += interfaceImplementation.Functions.Count * 8;
|
||||
}
|
||||
|
||||
if (destination == null)
|
||||
{
|
||||
destination = TmpName();
|
||||
_writer.Indented($"{destination} =l alloc8 {SizeOf(interfaceInitializer.InterfaceType)}");
|
||||
}
|
||||
|
||||
var interfaceVtablePointer = TmpName();
|
||||
_writer.Indented($"{interfaceVtablePointer} =l add {StructVtableName(interfaceInitializer.StructType.Name)}, {vtableOffset}");
|
||||
_writer.Indented($"storel {interfaceVtablePointer}, {destination}");
|
||||
|
||||
var objectPointer = TmpName();
|
||||
_writer.Indented($"{objectPointer} =l add {destination}, 8");
|
||||
_writer.Indented($"storel {implementation}, {objectPointer}");
|
||||
|
||||
return new Val(destination, interfaceInitializer.InterfaceType, ValKind.Direct);
|
||||
}
|
||||
|
||||
private Val EmitFuncCall(FuncCallNode funcCall)
|
||||
{
|
||||
var expression = EmitExpression(funcCall.Expression);
|
||||
|
||||
var parameterStrings = new List<string>();
|
||||
|
||||
foreach (var parameter in funcCall.Parameters)
|
||||
{
|
||||
var copy = EmitCreateCopyOrInitialize(parameter);
|
||||
parameterStrings.Add($"{FuncQBETypeName(parameter.Type)} {copy}");
|
||||
}
|
||||
|
||||
var funcPointer = EmitUnwrap(expression);
|
||||
if (funcCall.Type is VoidTypeNode)
|
||||
{
|
||||
_writer.Indented($"call {funcPointer}({string.Join(", ", parameterStrings)})");
|
||||
return new Val(string.Empty, funcCall.Type, ValKind.Direct);
|
||||
}
|
||||
else
|
||||
{
|
||||
var outputName = TmpName();
|
||||
_writer.Indented($"{outputName} {QBEAssign(funcCall.Type)} call {funcPointer}({string.Join(", ", parameterStrings)})");
|
||||
return new Val(outputName, funcCall.Type, ValKind.Direct);
|
||||
}
|
||||
}
|
||||
|
||||
private string EmitUnwrap(Val val)
|
||||
{
|
||||
return val.Kind switch
|
||||
|
||||
Reference in New Issue
Block a user