public void Visit(NotNode node)
{
if (node.Children.Count != 1)
{
throw new InternalCompilerError("Invalid child count for not-node");
}
node.Children[0].Accept(this);
if (node.Children[0].NodeType() != VariableType.BOOLEAN)
{
reporter.ReportError(
Error.SEMANTIC_ERROR,
"Incompatible expression for operator '!'",
node.Line,
node.Column);
reporter.ReportError(
Error.NOTE,
"Expression has type '" + node.Children[0].NodeType().Name() + "'",
node.Children[0].Line,
node.Children[0].Column);
reporter.ReportError(
Error.NOTE,
"Operator '!' expects the expression to have type '" + VariableType.BOOLEAN.Name() + "'",
node.Line,
node.Column);
node.SetType(VariableType.ERROR_TYPE);
}
else
{
node.SetType(VariableType.BOOLEAN);
}
}
public void Visit(NotNode node)
{
node.Children[0].Accept(this);
Emit(Bytecode.NOT);
}