public AnnotatedExpression AnnotateNameExpression(NameExpressionSyntax syntax)
{
var name = syntax.IdentifierToken.Text;
if (string.IsNullOrEmpty(name))
{
return(new AnnotatedLiteralExpression(0));
}
_scope.TryLookup(name, out var symbol);
if (symbol == null)
{
_diagnostics.ReportUndefinedName(syntax.IdentifierToken.Span, name);
return(new AnnotatedLiteralExpression(0));
}
return(new AnnotatedVariableExpression(symbol));
}
private BoundExpression BindNameExpression(NameExpressionSyntax syntax)
{
var name = syntax.IdentifierToken.Text;
if (string.IsNullOrEmpty(name))
{
//already reported, this is null because name was synthesized
return(new BoundLiteralExpression(0));
}
if (!_scope.TryLookup(name, out var variable))
{
_diagnostics.ReportUndefinedName(syntax.IdentifierToken.Span, name);
return(new BoundLiteralExpression(0));
}
return(new BoundVariableExpression(variable));
}
private BoundExpression BindNameExpression(NameExpressionSyntax syntax)
{
var name = syntax.IdentifierToken.Text;
if (string.IsNullOrEmpty(name))
{
// this means the token was inserted by parser and we already reported an error
return(new BoundLiteralExpression(0));
}
if (!_scope.TryLookup(name, out VariableSymbol variable))
{
_diagnostics.ReportUndefinedName(syntax.IdentifierToken.Span, name);
return(new BoundLiteralExpression(0));
}
return(new BoundVariableExpression(variable));
}
private BoundExpression BindNameExpression(NameExpressionSyntax syntax)
{
var name = syntax.IdentifierToken.Text;
if (syntax.IdentifierToken.IsMissing)
{
// This means the token was inserted by the parser. We already
// reported error so we can just return an error expression.
return(new BoundErrorExpression());
}
if (!_scope.TryLookupVariable(name, out var variable))
{
_diagnostics.ReportUndefinedName(syntax.IdentifierToken.Span, name);
return(new BoundErrorExpression());
}
return(new BoundVariableExpression(variable));
}
private BoundExpression BindNameExpression(NameExpressionSyntax syntax)
{
var name = syntax.NameToken.Text;
if (String.IsNullOrEmpty(name))
{
// Specified syntax was inserted by the Parser as a result of a parse error.
// Diagnostic has already been reported by the Parser.
return(new BoundErrorExpression());
}
if (!_scope.TryLookupVariable(name, out var variable))
{
_diagnostics.ReportUndefinedName(syntax.NameToken.Span, name);
return(new BoundErrorExpression());
}
return(new BoundVariableExpression(variable));
}
private BoundExpression BindNameExpression(NameExpressionSyntax syntax)
{
var name = syntax.IdentifierToken.Text;
if (syntax.IdentifierToken.IsMissing)
{
// If we get here we ended up on a
// syntactic token, inserted by the parser
// Error has been reported already so we just
// return an error expression
return(new BoundErrorExpression());
}
if (!_scope.TryLookup(name, out var variable))
{
Diagnostics.ReportUndefinedName(syntax.IdentifierToken.Span, name);
return(new BoundErrorExpression());
}
return(new BoundVariableExpression(variable));
}
internal static string Token(this NameExpressionSyntax expression)
{
Assert.NotNull(expression.IdentifierToken);
return(expression.ToString());
}
internal CallExpressionSyntax(SyntaxTree syntaxTree, NameExpressionSyntax identifier, SyntaxToken openParenthesisToken, SeparatedSyntaxList <ExpressionSyntax> arguments, SyntaxToken closeParenthesisToken)
: this(syntaxTree, (ExpressionSyntax)identifier, openParenthesisToken, arguments, closeParenthesisToken)
{
}
public BoundAssignementExpression(NameExpressionSyntax name, BoundExpression expression)
{
Name = name;
Expression = expression;
}
/// <summary>
/// Tries to get a member from this imported class symbol.
/// </summary>
/// <param name="text">The name of the member.</param>
/// <param name="ne">The name expression.</param>
/// <param name="member">The resulting member, if one is found.</param>
/// <returns>Whether we found a matching member or not.</returns>
public bool TryLookupMember(string text, NameExpressionSyntax ne, out object member)
{
throw new NotImplementedException();
}
public virtual void VisitNameExpression(NameExpressionSyntax node)
{
DefaultVisit(node);
}
private BoundExpression BindNameExpression(NameExpressionSyntax node)
{
if (node.Name.IsMissing)
{
// If this token was inserted by the parser, there is no point in
// trying to resolve this guy.
return(new BoundErrorExpression());
}
var name = node.Name;
var symbols = LookupColumnTableOrVariable(name).ToImmutableArray();
if (symbols.Length == 0)
{
var isInvocable = LookupSymbols <FunctionSymbol>(name).Any() ||
LookupSymbols <AggregateSymbol>(name).Any();
if (isInvocable)
{
Diagnostics.ReportInvocationRequiresParenthesis(name);
}
else
{
Diagnostics.ReportColumnTableOrVariableNotDeclared(name);
}
return(new BoundErrorExpression());
}
if (symbols.Length > 1)
{
Diagnostics.ReportAmbiguousName(name, symbols);
}
var symbol = symbols.First();
switch (symbol.Kind)
{
case SymbolKind.TableColumnInstance:
return(new BoundColumnExpression((ColumnInstanceSymbol)symbol));
case SymbolKind.Variable:
return(new BoundVariableExpression((VariableSymbol)symbol));
case SymbolKind.TableInstance:
{
// If symbol refers to a table, we need to make sure that it's either not a derived table/CTE
// or we are used in column access context (i.e. our parent is a a property access).
//
// For example, the following query is invalid
//
// SELECT D -- ERROR
// FROM (
// SELECT *
// FROM Employees e
// ) AS D
//
// You cannot obtain a value for D itself.
var tableInstance = symbol as TableInstanceSymbol;
if (tableInstance != null)
{
// TODO: Fully support row access
//var isColumnAccess = node.Parent is PropertyAccessExpressionSyntax;
//var hasNoType = tableInstance.Table.Type.IsMissing();
//if (!isColumnAccess && hasNoType)
// Diagnostics.ReportInvalidRowReference(name);
var isColumnAccess = node.Parent is PropertyAccessExpressionSyntax;
if (!isColumnAccess)
{
Diagnostics.ReportInvalidRowReference(name);
return(new BoundErrorExpression());
}
}
return(new BoundTableExpression(tableInstance));
}
default:
throw ExceptionBuilder.UnexpectedValue(symbol.Kind);
}
}
public virtual TResult VisitNameExpression(NameExpressionSyntax node)
{
return(DefaultVisit(node));
}
public QualifyColumnCodeAction(NameExpressionSyntax node, TableColumnInstanceSymbol symbol)
: base(node.SyntaxTree)
{
_node = node;
_symbol = symbol;
}
private void ClassifyNameExpression(NameExpressionSyntax node)
{
ClassifyExpression(node, node.Name);
}