using CLanguage.Interpreter; using CLanguage.Types; using System; namespace CLanguage.Syntax { public class ArrayElementExpression : Expression { public Expression Array { get; set; } public Expression ElementIndex { get; set; } public ArrayElementExpression(Expression array, Expression elementIndex) { Array = array; ElementIndex = elementIndex; } public override CType GetEvaluatedCType(EmitContext ec) { CType evaluatedCType = Array.GetEvaluatedCType(ec); CArrayType cArrayType; if ((cArrayType = (evaluatedCType as CArrayType)) != null) return cArrayType.ElementType; CPointerType cPointerType; if ((cPointerType = (evaluatedCType as CPointerType)) != null) return cPointerType.InnerType; ec.Report.Error(601, "Left hand side of [ must be an array or pointer"); return CType.Void; } protected override void DoEmit(EmitContext ec) { Array.Emit(ec); ElementIndex.Emit(ec); ec.Emit(OpCode.LoadValue, GetEvaluatedCType(ec).GetSize(ec)); ec.Emit(OpCode.MultiplyInt32); ec.Emit(OpCode.AddInt32); ec.Emit(OpCode.LoadMemory); throw new NotImplementedException(); } public override string ToString() { return $"{Array}""{ElementIndex}"""; } } }