public void SyntaxFacts_Identifier_GetValidIdentifier_ReturnsSame_ForValidIdentifier()
{
const string text = "lorem";
var identifier = SyntaxFacts.GetValidIdentifier(text);
Assert.Equal(text, identifier);
}
private static string BuildColumns(int indent, IEnumerable <TableColumnInstanceSymbol> symbols)
{
var indentString = new string(' ', indent);
var isFirst = true;
var sb = new StringBuilder();
foreach (var symbol in symbols)
{
if (isFirst)
{
isFirst = false;
}
else
{
sb.Append(@",");
sb.AppendLine();
sb.Append(indentString);
}
var table = SyntaxFacts.GetValidIdentifier(symbol.TableInstance.Name);
var column = SyntaxFacts.GetValidIdentifier(symbol.Column.Name);
sb.Append(table);
sb.Append(@".");
sb.Append(column);
}
return(sb.ToString());
}
private static string CreateCondition(TableInstanceSymbol left, IReadOnlyList <ColumnSymbol> leftColumns, TableInstanceSymbol right, IReadOnlyList <ColumnSymbol> rightColumns)
{
var sb = new StringBuilder();
for (var i = 0; i < leftColumns.Count; i++)
{
if (sb.Length > 0)
{
sb.Append(@" AND ");
}
var leftColumn = leftColumns[i];
var rightColumn = rightColumns[i];
sb.Append(SyntaxFacts.GetValidIdentifier(right.Name));
sb.Append(@".");
sb.Append(SyntaxFacts.GetValidIdentifier(rightColumn.Name));
sb.Append(@" = ");
sb.Append(SyntaxFacts.GetValidIdentifier(left.Name));
sb.Append(@".");
sb.Append(SyntaxFacts.GetValidIdentifier(leftColumn.Name));
}
return(sb.ToString());
}
private static CompletionItem CreateSymbolCompletionGroup(string name, IEnumerable <Symbol> symbols)
{
var multiple = symbols.Skip(1).Any();
if (!multiple)
{
return(CreateSymbolCompletion(symbols.First()));
}
var hasNonInvocables = symbols.Any(s => !(s is InvocableSymbol));
if (!hasNonInvocables)
{
return(CreateInvocableCompletionGroup(symbols));
}
var displayText = name;
var insertionText = SyntaxFacts.GetValidIdentifier(name);
var sb = new StringBuilder();
sb.Append(Resources.AmbiguousName);
foreach (var symbol in symbols)
{
sb.AppendLine();
sb.Append(@" ");
sb.Append(symbol);
}
var description = sb.ToString();
return(new CompletionItem(displayText, insertionText, description, Glyph.AmbiguousName));
}
public void SyntaxFacts_Identifier_GetValidIdentifier_ReturnsParenthesized_ForSpaces()
{
const string text = "lorem ipsum";
const string expected = "[" + text + "]";
var identifier = SyntaxFacts.GetValidIdentifier(text);
Assert.Equal(expected, identifier);
}
private static void AppendName(this ICollection <SymbolMarkupToken> markup, SymbolMarkupKind kind, string name)
{
var displayName = string.IsNullOrEmpty(name)
? @"?"
: SyntaxFacts.GetValidIdentifier(name);
markup.Append(kind, displayName);
}
private static CompletionItem CreateSymbolCompletion(Symbol symbol)
{
var displayText = symbol.Name;
var insertionText = SyntaxFacts.GetValidIdentifier(symbol.Name);
var description = SymbolMarkup.ForSymbol(symbol).ToString();
var glyph = symbol.GetGlyph();
return(new CompletionItem(displayText, insertionText, description, glyph, symbol));
}
public void SyntaxFacts_Identifier_GetValidIdentifier_ReturnsSame_ForContextualKeywords()
{
foreach (var keywordKind in SyntaxFacts.GetContextualKeywordKinds())
{
var text = keywordKind.GetText();
var identifier = SyntaxFacts.GetValidIdentifier(text);
Assert.Equal(text, identifier);
}
}
public void SyntaxFacts_Identifier_GetValidIdentifier_ReturnsParenthesized_ForReservedKeywords()
{
foreach (var keywordKind in SyntaxFacts.GetReservedKeywordKinds())
{
var text = keywordKind.GetText();
var expected = "[" + text + "]";
var identifier = SyntaxFacts.GetValidIdentifier(text);
Assert.Equal(expected, identifier);
}
}
private static string GetColumnReference(int index, QueryColumnInstanceSymbol column)
{
if (!string.IsNullOrEmpty(column.Name))
{
return(SyntaxFacts.GetValidIdentifier(column.Name));
}
var ordinal = index + 1;
return(ordinal.ToString(CultureInfo.InvariantCulture));
}
protected override IEnumerable <CodeIssue> GetIssues(SemanticModel semanticModel, OrderedQuerySyntax node)
{
return(from orderByColumn in node.Columns
let selector = orderByColumn.ColumnSelector as LiteralExpressionSyntax
where selector != null && selector.Value is int
let column = semanticModel.GetSymbol(orderByColumn)
where column != null && !string.IsNullOrEmpty(column.Name)
let namedReference = SyntaxFacts.GetValidIdentifier(column.Name)
let action = new[] { new ReplaceOrdingalByNamedReferenceCodeAction(selector, namedReference) }
select new CodeIssue(CodeIssueKind.Warning, selector.Span, action));
}
public override IAggregatable CreateAggregatable(Type argumentType)
{
// Create an expression to determine the type of inputType + inputType
var addDataContext = DataContext.Empty.AddVariables(new VariableSymbol(@"Left", argumentType),
new VariableSymbol(@"Right", argumentType));
var addExpression = Expression <object> .Create(addDataContext, @"Left + Right");
Type sumType;
try
{
sumType = addExpression.Resolve();
}
catch (CompilationException)
{
return(null);
}
// In some cases, the result of the adding both arguments might be different from
// arguments type, e.g. adding to bytes will result in an int.
//
// In order to get the correct answer, let's compose a new expression.
var leftVariable = new VariableSymbol(@"Left", argumentType);
var rightVariable = new VariableSymbol(@"Right", argumentType);
var sumDataContext = DataContext.Empty.AddVariables(leftVariable, rightVariable);
var sumExpression = Expression <object> .Create(sumDataContext, @"Left + Right");
try
{
var resultType = sumExpression.Resolve();
if (resultType != sumType)
{
return(null);
}
}
catch (CompilationException)
{
return(null);
}
// Conversion from inputType to sumType
var conversionInputVariable = new VariableSymbol(@"Input", argumentType);
var convertionDataContext = DataContext.Empty.AddVariables(conversionInputVariable);
var conversionExpression = Expression <object> .Create(convertionDataContext, $"CAST(@Input AS {SyntaxFacts.GetValidIdentifier(sumType.Name)})");
try
{
conversionExpression.Resolve();
}
catch (CompilationException)
{
return(null);
}
return(new SumAggregatable(sumExpression, leftVariable, rightVariable, conversionExpression, conversionInputVariable));
}
protected override void GetChanges(TextChangeSet changeSet)
{
var name = SyntaxFacts.GetValidIdentifier(_symbol.TableInstance.Name);
changeSet.InsertText(_node.Span.Start, name + @".");
}
