public IEnumerable <AstNode> GetNodesBetween(AstLocation start, AstLocation end)
{
AstNode node = this;
while (node != null)
{
AstNode next;
if (start <= node.StartLocation && node.EndLocation <= end)
{
// Remember next before yielding node.
// This allows iteration to continue when the caller removes/replaces the node.
next = node.NextSibling;
yield return(node);
}
else
{
if (node.EndLocation < start)
{
next = node.NextSibling;
}
else
{
next = node.FirstChild;
}
}
if (next != null && next.StartLocation > end)
{
yield break;
}
node = next;
}
}
/// <summary>
/// Gets the node specified by T at location. This is useful for getting a specific node from the tree. For example searching
/// the current method declaration.
/// </summary>
public T GetNodeAt <T> (AstLocation location) where T : AstNode
{
T result = null;
AstNode node = this;
while (node.FirstChild != null)
{
var child = node.FirstChild;
while (child != null)
{
if (child.StartLocation <= location && location < child.EndLocation)
{
if (child is T)
{
result = (T)child;
}
node = child;
break;
}
child = child.NextSibling;
}
// found no better child node - therefore the parent is the right one.
if (child == null)
{
break;
}
}
return(result);
}
public AstNode GetNodeAt(AstLocation location, Predicate <AstNode> pred = null)
{
AstNode result = null;
AstNode node = this;
while (node.FirstChild != null)
{
var child = node.FirstChild;
while (child != null)
{
if (child.StartLocation <= location && location < child.EndLocation)
{
if (pred == null || pred(child))
{
result = child;
}
node = child;
break;
}
child = child.NextSibling;
}
// found no better child node - therefore the parent is the right one.
if (child == null)
{
break;
}
}
return(result);
}
protected Identifier(string name, AstLocation location)
{
if (name == null)
{
throw new ArgumentNullException("name");
}
this.Name = name;
this.startLocation = location;
}
public Identifier(string name, AstLocation location)
{
if (name == null)
{
throw new ArgumentNullException("name");
}
IsVerbatim = name.Length > 0 && name[0] == '@';
this.Name = IsVerbatim ? name.Substring(1) : name;
this.startLocation = location;
}
public Identifier(string name, AstLocation location)
{
if (name == null)
{
throw new ArgumentNullException("name");
}
IsQuoted = name.StartsWith("@");
this.Name = IsQuoted ? name.Substring(1) : name;
this.startLocation = location;
}
/// <summary>
/// Gets a node that can be resolved at location.
/// </summary>
public AstNode GetResolveableNodeAt(AstLocation location)
{
return(GetNodeAt(location, delegate(AstNode n) {
if (n is TypeDeclaration)
{
var decl = (TypeDeclaration)n;
return decl.NameToken.StartLocation <= location && location <= decl.NameToken.EndLocation;
}
if (n is DelegateDeclaration)
{
var decl = (DelegateDeclaration)n;
return decl.NameToken.StartLocation <= location && location <= decl.NameToken.EndLocation;
}
if (n is MemberDeclaration)
{
var decl = (MemberDeclaration)n;
return decl.NameToken.StartLocation <= location && location <= decl.NameToken.EndLocation;
}
if (n is ConstructorDeclaration)
{
var decl = (ConstructorDeclaration)n;
return decl.IdentifierToken.StartLocation <= location && location <= decl.IdentifierToken.EndLocation;
}
if (n is DestructorDeclaration)
{
var decl = (DestructorDeclaration)n;
return decl.IdentifierToken.StartLocation <= location && location <= decl.IdentifierToken.EndLocation;
}
if (n is VariableInitializer)
{
var decl = (VariableInitializer)n;
return decl.NameToken.StartLocation <= location && location <= decl.NameToken.EndLocation;
}
if (n is ParameterDeclaration)
{
var decl = (ParameterDeclaration)n;
return decl.NameToken.StartLocation <= location && location <= decl.NameToken.EndLocation;
}
if (n is MemberReferenceExpression)
{
var decl = (MemberReferenceExpression)n;
return decl.MemberNameToken.StartLocation <= location && location <= decl.MemberNameToken.EndLocation;
}
return n is IdentifierExpression || n is AstType;
}));
}
public UsingScope GetUsingScope(AstLocation location)
{
foreach (UsingScope scope in usingScopes)
{
if (scope.Region.IsInside(location.Line, location.Column))
{
return(scope);
}
}
return(rootUsingScope);
}
public ITypeDefinition GetTopLevelTypeDefinition(AstLocation location)
{
foreach (ITypeDefinition typeDef in topLevelTypeDefinitions)
{
if (typeDef.Region.IsInside(location.Line, location.Column))
{
return(typeDef);
}
}
return(null);
}
public static Identifier Create(string name, AstLocation location)
{
if (name == null)
{
throw new ArgumentNullException("name");
}
if (name.Length > 0 && name[0] == '@')
{
return(new VerbatimIdentifier(name.Substring(1), location));
}
return(new Identifier(name, location));
}
public ITypeDefinition GetTypeDefinition(AstLocation location)
{
ITypeDefinition parent = null;
ITypeDefinition type = GetTopLevelTypeDefinition(location);
while (type != null)
{
parent = type;
type = FindEntity(parent.NestedTypes, location);
}
return(parent);
}
static T FindEntity <T>(IList <T> list, AstLocation location) where T : class, IEntity
{
// This could be improved using a binary search
foreach (T entity in list)
{
if (entity.Region.IsInside(location.Line, location.Column))
{
return(entity);
}
}
return(null);
}
public IMember GetMember(AstLocation location)
{
ITypeDefinition type = GetTypeDefinition(location);
if (type == null)
{
return(null);
}
return(FindEntity(type.Methods, location)
?? FindEntity(type.Fields, location)
?? FindEntity(type.Properties, location)
?? (IMember)FindEntity(type.Events, location));
}
public static Identifier Create(string name, AstLocation location, bool isVerbatim)
{
if (name == null)
{
throw new ArgumentNullException("name");
}
if (isVerbatim)
{
return(new VerbatimIdentifier(name, location));
}
return(new Identifier(name, location));
}
public FixableResult GetFixableResult(ICS.AstLocation location, IBaseMember node, string name)
{
IList <string> suggestedFixes;
var error = GetErrorMessage(name, out suggestedFixes);
var fixes = new List <RenameMemberFix> ();
fixes.Add(new RenameMemberFix(node, name, null));
if (suggestedFixes != null)
{
fixes.AddRange(suggestedFixes.Select(f => new RenameMemberFix(node, name, f)));
}
return(new FixableResult(
new DomRegion(location.Line, location.Column, location.Line, location.Column + name.Length),
error,
MonoDevelop.SourceEditor.QuickTaskSeverity.Warning,
ResultCertainty.High, ResultImportance.Medium,
fixes.ToArray <IAnalysisFix> ()));
}
public AstNode GetNodeAt(AstLocation location)
{
AstNode node = this;
while (node.FirstChild != null)
{
var child = node.FirstChild;
while (child != null)
{
if (child.StartLocation <= location && location < child.EndLocation)
{
node = child;
break;
}
child = child.NextSibling;
}
// found no better child node - therefore the parent is the right one.
if (child == null)
{
break;
}
}
return(node);
}
public IdentifierExpression(string identifier, AstLocation location)
{
SetChildByRole(Roles.Identifier, CSharp.Identifier.Create(identifier, location));
}
public ITypeDefinition GetTopLevelTypeDefinition(AstLocation location)
{
return(FindEntity(topLevelTypeDefinitions, location));
}
public CSharpTokenNode(AstLocation location, int tokenLength)
{
this.startLocation = location;
this.tokenLength = tokenLength;
}
public CSharpModifierToken(AstLocation location, Modifiers modifier) : base(location, 0)
{
this.Modifier = modifier;
}
void IRelocatable.SetStartLocation(AstLocation startLocation)
{
this.startLocation = startLocation;
}
public SimpleType(string identifier, AstLocation location)
{
SetChildByRole(Roles.Identifier, CSharp.Identifier.Create (identifier, location));
}
public IdentifierExpression(string identifier, AstLocation location)
{
SetChildByRole(Roles.Identifier, new Identifier(identifier, location));
}
public VerbatimIdentifier(string name, AstLocation location) : base(name, location)
{
}
public SimpleType(string identifier, AstLocation location)
{
SetChildByRole(Roles.Identifier, new Identifier(identifier, location));
}
public bool Contains(AstLocation location)
{
return(this.StartLocation <= location && location < this.EndLocation);
}
DomRegion MakeRegion(AstLocation start, AstLocation end)
{
return(new DomRegion(parsedFile.FileName, start.Line, start.Column, end.Line, end.Column));
}
public EmptyExpression(AstLocation location)
{
this.location = location;
}
public PrimitiveType(string keyword, AstLocation location)
{
this.Keyword = keyword;
this.Location = location;
}