public Location(string source, Position declOffset, QsLocation stmLoc, Range range)
{
this.SourceFile = source;
this.DeclarationOffset = declOffset;
this.RelativeStatementLocation = stmLoc;
this.SymbolRange = range;
}
/// <summary>
/// Note that the only thing that may be set to null is the fragment kind - all other properties need to be set upon initialization
/// </summary>
private CodeFragment(int indent, Range range, string text, char next, QsComments?comments, QsFragmentKind?kind, bool include)
{
if (!DelimitingChars.Contains(next) && next != MissingDelimiter)
{
throw new ArgumentException("a CodeFragment needs to be followed by a DelimitingChar");
}
this.Indentation = indent < 0 ? throw new ArgumentException("indentation needs to be positive") : indent;
this.Text = text.TrimEnd();
this.FollowedBy = next;
this.Comments = comments ?? QsComments.Empty;
this.Kind = kind; // nothing here should be modifiable
this.Range = range;
this.HeaderRange = GetHeaderRange(this.Text, this.Kind);
this.IncludeInCompilation = include;
}
// external routines for context verification
/// <summary>
/// Given the line number of the lines that contain tokens that (possibly) have been modified,
/// checks which callable declaration they can potentially belong to and returns the fully qualified name of those callables.
/// </summary>
internal static IEnumerable <(Range, QsQualifiedName)> CallablesWithContentModifications(this FileContentManager file, IEnumerable <int> changedLines)
{
var lastInFile = file.LastToken()?.GetFragment()?.Range?.End ?? file.End();
var callables = file.GetCallableDeclarations().Select(tuple => // these are sorted according to their line number
{
var ns = file.TryGetNamespaceAt(tuple.Item2.Start);
QsCompilerError.Verify(ns != null, "namespace for callable declaration should not be null"); // invalid namespace names default to an unknown namespace name, but remain included in the compilation
return(tuple.Item2.Start, new QsQualifiedName(ns, tuple.Item1));
}).ToList();
// NOTE: The range of modifications that has to trigger an update of the syntax tree for a callable
// does need to go up to and include modifications to the line containing the next callable!
// Otherwise inserting a callable declaration in the middle of an existing callable does not trigger the right behavior!
(Range, QsQualifiedName) TypeCheckingRange((Position, QsQualifiedName) lastPreceding, IEnumerable <(Position, QsQualifiedName)> next)
{
var callableStart = lastPreceding.Item1;
var callableEnd = next.Any() ? next.First().Item1 : lastInFile;
return(Range.Create(callableStart, callableEnd), lastPreceding.Item2);
}
foreach (var lineNr in changedLines)
{
bool Precedes((Position, QsQualifiedName) tuple) => tuple.Item1.Line < lineNr;
var preceding = callables.TakeWhile(Precedes);
var following = callables.SkipWhile(Precedes);
if (preceding.Any())
{
yield return(TypeCheckingRange(preceding.Last(), following));
}
if (following.Any() && following.First().Start.Line == lineNr)
{
yield return(TypeCheckingRange(following.First(), following.Skip(1)));
}
}
}
internal CodeFragment SetRange(Range range) => new CodeFragment(this.Indentation, range, this.Text, this.FollowedBy, this.Comments, this.Kind, this.IncludeInCompilation);
internal CodeFragment(int indent, Range range, string text, char next, QsFragmentKind?kind = null)
: this(indent, range, text, next, null, kind, true)
{
}
/// <summary> /// Returns a function that returns true if a given fragment does not overlap with the specified range. /// </summary> internal static Func <CodeFragment, bool> NotOverlappingWith(Range relRange) => token => token.IsWithinRange(Range.Create(Position.Zero, relRange.Start)) || TokensAfter(relRange.End)(token);
/// <summary> /// Returns true if the given token is fully included in the given range. /// </summary> internal static bool IsWithinRange(this CodeFragment token, Range range) => range.Contains(token.Range.Start) && range.ContainsEnd(token.Range.End);
/// <summary>
/// Returns true if the given file contains any tokens overlapping with the given fragment.
/// The range of the tokens in the file is assumed to be relative to their start line (the index at which they are listed),
/// whereas the range of the given fragment is assumed to be the absolute range.
/// </summary>
/// <exception cref="ArgumentOutOfRangeException"><paramref name="range"/> is not a valid range within <paramref name="file"/>.</exception>
internal static bool ContainsTokensOverlappingWith(this FileContentManager file, Range range)
{
if (!file.ContainsRange(range))
{
throw new ArgumentOutOfRangeException(nameof(range));
}
var(start, end) = (range.Start.Line, range.End.Line);
if (start != end && file.GetTokenizedLines(start + 1, end - start - 1).SelectMany(x => x).Any())
{
return(true);
}
var inRange = file.GetTokenizedLine(start).Where(TokensAfter(Position.Create(0, range.Start.Column))); // checking tokens overlapping with range.Start below
inRange = start == end
? inRange.Where(TokensStartingBefore(Position.Create(0, range.End.Column)))
: inRange.Concat(file.GetTokenizedLine(end).Where(TokensStartingBefore(Position.Create(0, range.End.Column))));
if (inRange.Any())
{
QsCompilerError.Raise($"{range.DiagnosticString()} overlaps for start = {start}, end = {end}, \n\n" +
$"{string.Join("\n", file.GetTokenizedLine(start).Select(x => $"{x.Range.DiagnosticString()}"))},\n\n " +
$"{string.Join("\n", file.GetTokenizedLine(end).Select(x => $"{x.Range.DiagnosticString()}"))},");
return(true);
}
var overlapsWithStart = file.TryGetFragmentAt(range.Start, out _);
return(overlapsWithStart != null);
}
/// <summary>
/// Given the location information for a declared symbol,
/// as well as the position of the declaration within which the symbol is declared,
/// returns the zero-based line and character index indicating the position of the symbol in the file.
/// Returns null if the given object is not compatible with the position information generated by this CompilationBuilder.
/// </summary>
public static Position SymbolPosition(QsLocation rootLocation, QsNullable <Position> symbolPosition, Range symbolRange)
{
// the position offset is set to null (only) for variables defined in the declaration
var offset = symbolPosition.IsNull ? rootLocation.Offset : rootLocation.Offset + symbolPosition.Item;
return(offset + symbolRange.Start);
}
/// <summary> /// Returns true if the start position of the diagnostic range is contained in the given range, excluding the /// given range's end position. /// </summary> internal static bool SelectByStart(this Diagnostic m, Range range) => !(m?.Range?.Start is null) && range.Contains(m.Range.Start.ToQSharp());
// utils for getting the necessary information for editor commands
internal static Location AsLocation(string source, Position offset, Range relRange) =>
/// <summary>
/// Returns all code fragments in the specified file that overlap with the given range.
/// Returns an empty sequence if any of the given arguments is null.
/// </summary>
private static IEnumerable <CodeFragment> FragmentsOverlappingWithRange(this FileContentManager file, Range range)
{
if (file is null || range is null)
{
return(Enumerable.Empty <CodeFragment>());
}
var(start, end) = (range.Start.Line, range.End.Line);
var fragAtStart = file.TryGetFragmentAt(range.Start, out _, includeEnd: true);
var inRange = file.GetTokenizedLine(start).Select(t => t.WithLineNumOffset(start)).Where(ContextBuilder.TokensAfter(range.Start)); // does not include fragAtStart
inRange = start == end
? inRange.Where(ContextBuilder.TokensStartingBefore(range.End))
: inRange.Concat(file.GetTokenizedLines(start + 1, end - start - 1).SelectMany((x, i) => x.Select(t => t.WithLineNumOffset(start + 1 + i))))
.Concat(file.GetTokenizedLine(end).Select(t => t.WithLineNumOffset(end)).Where(ContextBuilder.TokensStartingBefore(range.End)));
var fragments = ImmutableArray.CreateBuilder <CodeFragment>();
if (fragAtStart != null)
{
fragments.Add(fragAtStart);
}
fragments.AddRange(inRange);
return(fragments.ToImmutableArray());
}