public override void CheckSemantics(TigerScope scope, Report report) { ContainingScope = scope; //Check children LeftOperandNode.CheckSemantics(scope, report); RightOperandNode.CheckSemantics(scope, report); if (!LeftOperandNode.IsOK || !RightOperandNode.IsOK) { return; } //Check children types if (TigerType.AreCompatible(LeftOperandNode.TigerType, TigerType.Int) && TigerType.AreCompatible(RightOperandNode.TigerType, TigerType.Int)) { TigerType = TigerType.Int; } else if (!TigerType.AreCompatible(LeftOperandNode.TigerType, TigerType.Int)) { report.AddError(SemanticErrors.LogicalOperandInvalidType(LeftOperandNode, LeftOperandNode.TigerType)); } else { report.AddError(SemanticErrors.LogicalOperandInvalidType(RightOperandNode, RightOperandNode.TigerType)); } }