private BoundExpression BindVariableExpression(VariableExpressionSyntax node)
{
var symbols = LookupVariable(node.Name).ToImmutableArray();
if (symbols.Length == 0)
{
Diagnostics.ReportUndeclaredVariable(node);
return(new BoundErrorExpression());
}
if (symbols.Length > 1)
{
Diagnostics.ReportAmbiguousVariable(node.Name);
}
var variableSymbol = symbols[0];
return(new BoundVariableExpression(variableSymbol));
}
public virtual void VisitParameterExpression(VariableExpressionSyntax node)
{
DefaultVisit(node);
}
public static void ReportUndeclaredVariable(this ICollection <Diagnostic> diagnostics, VariableExpressionSyntax node)
{
var variableName = node.Name;
diagnostics.Report(variableName.Span, DiagnosticId.UndeclaredVariable, variableName.ValueText);
}
public virtual TResult VisitParameterExpression(VariableExpressionSyntax node)
{
return(DefaultVisit(node));
}
private void ClassifyVariableExpression(VariableExpressionSyntax node)
{
ClassifyExpression(node, node);
}