public override ASTNode VisitComparisson([NotNull] CoolParser.ComparissonContext context)
{
ComparisonOperation operators;
switch (context.op.Text)
{
case "<=":
operators = new LessEqual(context);
break;
case "<":
operators = new Less(context);
break;
case "=":
operators = new EqualNode(context);
break;
default:
throw new NotSupportedException();
}
operators.LeftOperand = Visit(context.expression(0)) as ExpressionNode; // LEFT EXPRESSION
operators.RightOperand = Visit(context.expression(1)) as ExpressionNode; //RIGHT EXPRESSION
return(operators);
}
public override ASTNode VisitComparisson([NotNull] CoolParser.ComparissonContext context)
{
BinaryOperatorNode coNode = null;
if (context.op.Text == "<")
{
coNode = new LessNode(context.Start.Line, context.Start.Column);
}
if (context.op.Text == "=")
{
coNode = new EqualNode(context.Start.Line, context.Start.Column);
}
if (context.op.Text == "<=")
{
coNode = new LessEqualNode(context.Start.Line, context.Start.Column);
}
coNode.LeftOperand = Visit(context.expr(0)) as ExpressionNode;
coNode.RightOperand = Visit(context.expr(1)) as ExpressionNode;
return(coNode);
}
/// <summary>
/// Visit a parse tree produced by the <c>comparisson</c>
/// labeled alternative in <see cref="CoolParser.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 VisitComparisson([NotNull] CoolParser.ComparissonContext context)
{
return(VisitChildren(context));
}
