/// <summary> /// Visit a parse tree produced by <see cref="Generated.Z80AsmParser.multExpr"/>. /// </summary> /// <param name="context">The parse tree.</param> /// <return>The visitor result.</return> public override object VisitMultExpr(Z80AsmParser.MultExprContext context) { if (IsInvalidContext(context)) { return(null); } var expr = (ExpressionNode)VisitUnaryExpr(context.GetChild(0) as Z80AsmParser.UnaryExprContext); var nextChildIndex = 2; while (nextChildIndex < context.ChildCount) { var rightExpr = VisitUnaryExpr(context.GetChild(nextChildIndex) as Z80AsmParser.UnaryExprContext); var opToken = context.GetChild(nextChildIndex - 1).NormalizeToken(); var multExpr = opToken == "*" ? new MultiplyOperationNode() : (opToken == "/" ? new DivideOperationNode() : new ModuloOperationNode() as BinaryOperationNode); multExpr.LeftOperand = expr; multExpr.RightOperand = (ExpressionNode)rightExpr; expr = multExpr; nextChildIndex += 2; } return(expr); }
public override object VisitMultExpr(Z80AsmParser.MultExprContext context) { if (context == null) { return(null); } var subExprs = context.minMaxExpr(); var expr = VisitMinMaxExpr(subExprs[0]); var opIndex = 1; for (var i = 1; i < subExprs.Length; i++) { var rightExpr = VisitMinMaxExpr(subExprs[i]); var opToken = context.GetChild(opIndex).GetText(); BinaryOperationNode mulExpr; switch (opToken) { case "*": mulExpr = new MultiplyOperationNode(expr, rightExpr); break; case "/": mulExpr = new DivideOperationNode(expr, rightExpr); break; default: // % mulExpr = new ModuloOperationNode(expr, rightExpr); break; } expr = mulExpr; opIndex += 2; } return(expr); }