public override ExprNode VisitInfixExpr(ExprParser.InfixExprContext context)
{
InfixNode node;
switch (context.op.Type)
{
case ExprLexer.OP_ADD: node = new AddNode(); break;
case ExprLexer.OP_SUB: node = new SubNode(); break;
case ExprLexer.OP_DIV: node = new DivNode(); break;
case ExprLexer.OP_MUL: node = new MulNode(); break;
case ExprLexer.OP_POW: node = new PowNode(); break;
default: throw new NotSupportedException($"Operation type {context.op.Type} is not supported");
}
node.Left = Visit(context.left);
node.Right = Visit(context.right);
return(node);
}
/// <summary>
/// Exit a parse tree produced by the <c>infixExpr</c>
/// labeled alternative in <see cref="ExprParser.expr"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitInfixExpr([NotNull] ExprParser.InfixExprContext context)
{
}
/// <summary>
/// Visit a parse tree produced by the <c>infixExpr</c>
/// labeled alternative in <see cref="ExprParser.expr"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitInfixExpr([NotNull] ExprParser.InfixExprContext context)
{
return(VisitChildren(context));
}
