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SyntaxGenerator.cs
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SyntaxGenerator.cs
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using System.Threading;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.Host;
using Microsoft.CodeAnalysis.LanguageServices;
using Microsoft.CodeAnalysis.Options;
using Microsoft.CodeAnalysis.Shared.Extensions;
using Microsoft.CodeAnalysis.Simplification;
using Roslyn.Utilities;
namespace Microsoft.CodeAnalysis.Editing
{
/// <summary>
/// A language agnostic factory for creating syntax nodes.
///
/// This API can be used to create language specific syntax nodes that are semantically
/// similar between languages.
///
/// The trees generated by this API will try to respect user preferences when
/// possible. For example, generating <see cref="MemberAccessExpression(SyntaxNode, string)"/>
/// will be done in a way such that "this." or "Me." will be simplified according to user
/// preference if any <see cref="Simplifier.ReduceAsync(Document, OptionSet, CancellationToken)" />
/// overload is called.
/// </summary>
public abstract class SyntaxGenerator : ILanguageService
{
public static SyntaxRemoveOptions DefaultRemoveOptions = SyntaxRemoveOptions.KeepUnbalancedDirectives | SyntaxRemoveOptions.AddElasticMarker;
internal abstract SyntaxTrivia CarriageReturnLineFeed { get; }
internal abstract SyntaxTrivia ElasticCarriageReturnLineFeed { get; }
internal abstract bool RequiresExplicitImplementationForInterfaceMembers { get; }
internal abstract ISyntaxFactsService SyntaxFacts { get; }
internal abstract SyntaxTrivia EndOfLine(string text);
internal abstract SyntaxTrivia Whitespace(string text);
/// <summary>
/// Gets the <see cref="SyntaxGenerator"/> for the specified language.
/// </summary>
public static SyntaxGenerator GetGenerator(Workspace workspace, string language)
{
return workspace.Services.GetLanguageServices(language).GetService<SyntaxGenerator>();
}
/// <summary>
/// Gets the <see cref="SyntaxGenerator"/> for the language corresponding to the document.
/// </summary>
public static SyntaxGenerator GetGenerator(Document document)
{
return GetGenerator(document.Project);
}
/// <summary>
/// Gets the <see cref="SyntaxGenerator"/> for the language corresponding to the project.
/// </summary>
public static SyntaxGenerator GetGenerator(Project project)
{
return project.LanguageServices.GetService<SyntaxGenerator>();
}
#region Declarations
/// <summary>
/// Returns the node if it is a declaration, the immediate enclosing declaration if one exists, or null.
/// </summary>
public SyntaxNode GetDeclaration(SyntaxNode node)
{
while (node != null)
{
if (GetDeclarationKind(node) != DeclarationKind.None)
{
return node;
}
else
{
node = node.Parent;
}
}
return null;
}
/// <summary>
/// Returns the enclosing declaration of the specified kind or null.
/// </summary>
public SyntaxNode GetDeclaration(SyntaxNode node, DeclarationKind kind)
{
while (node != null)
{
if (GetDeclarationKind(node) == kind)
{
return node;
}
else
{
node = node.Parent;
}
}
return null;
}
/// <summary>
/// Creates a field declaration.
/// </summary>
public abstract SyntaxNode FieldDeclaration(
string name,
SyntaxNode type,
Accessibility accessibility = Accessibility.NotApplicable,
DeclarationModifiers modifiers = default,
SyntaxNode initializer = null);
/// <summary>
/// Creates a field declaration matching an existing field symbol.
/// </summary>
public SyntaxNode FieldDeclaration(IFieldSymbol field)
{
var initializer = field.HasConstantValue ? this.LiteralExpression(field.ConstantValue) : null;
return FieldDeclaration(field, initializer);
}
/// <summary>
/// Creates a field declaration matching an existing field symbol.
/// </summary>
public SyntaxNode FieldDeclaration(IFieldSymbol field, SyntaxNode initializer)
{
return FieldDeclaration(
field.Name,
TypeExpression(field.Type),
field.DeclaredAccessibility,
DeclarationModifiers.From(field),
initializer);
}
//internal abstract SyntaxNode ObjectMemberInitializer(IEnumerable<SyntaxNode> fieldInitializers);
//internal abstract SyntaxNode NamedFieldInitializer(SyntaxNode name, SyntaxNode value);
//internal abstract SyntaxNode WithObjectCreationInitializer(SyntaxNode objectCreationExpression, SyntaxNode initializer);
/// <summary>
/// Creates a method declaration.
/// </summary>
public abstract SyntaxNode MethodDeclaration(
string name,
IEnumerable<SyntaxNode> parameters = null,
IEnumerable<string> typeParameters = null,
SyntaxNode returnType = null,
Accessibility accessibility = Accessibility.NotApplicable,
DeclarationModifiers modifiers = default,
IEnumerable<SyntaxNode> statements = null);
/// <summary>
/// Creates a method declaration matching an existing method symbol.
/// </summary>
public SyntaxNode MethodDeclaration(IMethodSymbol method, IEnumerable<SyntaxNode> statements = null)
{
return MethodDeclaration(method, method.Name, statements);
}
internal SyntaxNode MethodDeclaration(IMethodSymbol method, string name, IEnumerable<SyntaxNode> statements = null)
{
var decl = MethodDeclaration(
name,
parameters: method.Parameters.Select(p => ParameterDeclaration(p)),
returnType: method.ReturnType.IsSystemVoid() ? null : TypeExpression(method.ReturnType),
accessibility: method.DeclaredAccessibility,
modifiers: DeclarationModifiers.From(method),
statements: statements);
if (method.TypeParameters.Length > 0)
{
decl = this.WithTypeParametersAndConstraints(decl, method.TypeParameters);
}
if (method.ExplicitInterfaceImplementations.Length > 0)
{
decl = this.WithExplicitInterfaceImplementations(decl,
ImmutableArray<ISymbol>.CastUp(method.ExplicitInterfaceImplementations));
}
return decl;
}
/// <summary>
/// Creates a method declaration.
/// </summary>
public virtual SyntaxNode OperatorDeclaration(
OperatorKind kind,
IEnumerable<SyntaxNode> parameters = null,
SyntaxNode returnType = null,
Accessibility accessibility = Accessibility.NotApplicable,
DeclarationModifiers modifiers = default,
IEnumerable<SyntaxNode> statements = null)
{
throw new NotImplementedException();
}
/// <summary>
/// Creates a method declaration matching an existing method symbol.
/// </summary>
public SyntaxNode OperatorDeclaration(IMethodSymbol method, IEnumerable<SyntaxNode> statements = null)
{
if (method.MethodKind != MethodKind.UserDefinedOperator)
{
throw new ArgumentException("Method is not an operator.");
}
var decl = OperatorDeclaration(
GetOperatorKind(method),
parameters: method.Parameters.Select(p => ParameterDeclaration(p)),
returnType: method.ReturnType.IsSystemVoid() ? null : TypeExpression(method.ReturnType),
accessibility: method.DeclaredAccessibility,
modifiers: DeclarationModifiers.From(method),
statements: statements);
return decl;
}
private OperatorKind GetOperatorKind(IMethodSymbol method)
{
switch (method.Name)
{
case WellKnownMemberNames.ImplicitConversionName: return OperatorKind.ImplicitConversion;
case WellKnownMemberNames.ExplicitConversionName: return OperatorKind.ExplicitConversion;
case WellKnownMemberNames.AdditionOperatorName: return OperatorKind.Addition;
case WellKnownMemberNames.BitwiseAndOperatorName: return OperatorKind.BitwiseAnd;
case WellKnownMemberNames.BitwiseOrOperatorName: return OperatorKind.BitwiseOr;
case WellKnownMemberNames.DecrementOperatorName: return OperatorKind.Decrement;
case WellKnownMemberNames.DivisionOperatorName: return OperatorKind.Division;
case WellKnownMemberNames.EqualityOperatorName: return OperatorKind.Equality;
case WellKnownMemberNames.ExclusiveOrOperatorName: return OperatorKind.ExclusiveOr;
case WellKnownMemberNames.FalseOperatorName: return OperatorKind.False;
case WellKnownMemberNames.GreaterThanOperatorName: return OperatorKind.GreaterThan;
case WellKnownMemberNames.GreaterThanOrEqualOperatorName: return OperatorKind.GreaterThanOrEqual;
case WellKnownMemberNames.IncrementOperatorName: return OperatorKind.Increment;
case WellKnownMemberNames.InequalityOperatorName: return OperatorKind.Inequality;
case WellKnownMemberNames.LeftShiftOperatorName: return OperatorKind.LeftShift;
case WellKnownMemberNames.LessThanOperatorName: return OperatorKind.LessThan;
case WellKnownMemberNames.LessThanOrEqualOperatorName: return OperatorKind.LessThanOrEqual;
case WellKnownMemberNames.LogicalNotOperatorName: return OperatorKind.LogicalNot;
case WellKnownMemberNames.ModulusOperatorName: return OperatorKind.Modulus;
case WellKnownMemberNames.MultiplyOperatorName: return OperatorKind.Multiply;
case WellKnownMemberNames.OnesComplementOperatorName: return OperatorKind.OnesComplement;
case WellKnownMemberNames.RightShiftOperatorName: return OperatorKind.RightShift;
case WellKnownMemberNames.SubtractionOperatorName: return OperatorKind.Subtraction;
case WellKnownMemberNames.TrueOperatorName: return OperatorKind.True;
case WellKnownMemberNames.UnaryNegationOperatorName: return OperatorKind.UnaryNegation;
case WellKnownMemberNames.UnaryPlusOperatorName: return OperatorKind.UnaryPlus;
default:
throw new ArgumentException("Unknown operator kind.");
}
}
/// <summary>
/// Creates a parameter declaration.
/// </summary>
public abstract SyntaxNode ParameterDeclaration(
string name,
SyntaxNode type = null,
SyntaxNode initializer = null,
RefKind refKind = RefKind.None);
/// <summary>
/// Creates a parameter declaration matching an existing parameter symbol.
/// </summary>
public SyntaxNode ParameterDeclaration(IParameterSymbol symbol, SyntaxNode initializer = null)
{
return ParameterDeclaration(
symbol.Name,
TypeExpression(symbol.Type),
initializer,
symbol.RefKind);
}
/// <summary>
/// Creates a property declaration.
/// </summary>
public abstract SyntaxNode PropertyDeclaration(
string name,
SyntaxNode type,
Accessibility accessibility = Accessibility.NotApplicable,
DeclarationModifiers modifiers = default,
IEnumerable<SyntaxNode> getAccessorStatements = null,
IEnumerable<SyntaxNode> setAccessorStatements = null);
/// <summary>
/// Creates a property declaration using an existing property symbol as a signature.
/// </summary>
public SyntaxNode PropertyDeclaration(
IPropertySymbol property,
IEnumerable<SyntaxNode> getAccessorStatements = null,
IEnumerable<SyntaxNode> setAccessorStatements = null)
{
return PropertyDeclaration(
property.Name,
TypeExpression(property.Type),
property.DeclaredAccessibility,
DeclarationModifiers.From(property),
getAccessorStatements,
setAccessorStatements);
}
public SyntaxNode WithAccessorDeclarations(SyntaxNode declaration, params SyntaxNode[] accessorDeclarations)
=> WithAccessorDeclarations(declaration, (IEnumerable<SyntaxNode>)accessorDeclarations);
public abstract SyntaxNode WithAccessorDeclarations(SyntaxNode declaration, IEnumerable<SyntaxNode> accessorDeclarations);
public abstract SyntaxNode GetAccessorDeclaration(
Accessibility accessibility = Accessibility.NotApplicable,
IEnumerable<SyntaxNode> statements = null);
public abstract SyntaxNode SetAccessorDeclaration(
Accessibility accessibility = Accessibility.NotApplicable,
IEnumerable<SyntaxNode> statements = null);
/// <summary>
/// Creates an indexer declaration.
/// </summary>
public abstract SyntaxNode IndexerDeclaration(
IEnumerable<SyntaxNode> parameters,
SyntaxNode type,
Accessibility accessibility = Accessibility.NotApplicable,
DeclarationModifiers modifiers = default,
IEnumerable<SyntaxNode> getAccessorStatements = null,
IEnumerable<SyntaxNode> setAccessorStatements = null);
/// <summary>
/// Creates an indexer declaration matching an existing indexer symbol.
/// </summary>
public SyntaxNode IndexerDeclaration(
IPropertySymbol indexer,
IEnumerable<SyntaxNode> getAccessorStatements = null,
IEnumerable<SyntaxNode> setAccessorStatements = null)
{
return IndexerDeclaration(
indexer.Parameters.Select(p => this.ParameterDeclaration(p)),
TypeExpression(indexer.Type),
indexer.DeclaredAccessibility,
DeclarationModifiers.From(indexer),
getAccessorStatements,
setAccessorStatements);
}
/// <summary>
/// Creates a statement that adds the given handler to the given event.
/// </summary>
public abstract SyntaxNode AddEventHandler(SyntaxNode @event, SyntaxNode handler);
/// <summary>
/// Creates a statement that removes the given handler from the given event.
/// </summary>
public abstract SyntaxNode RemoveEventHandler(SyntaxNode @event, SyntaxNode handler);
/// <summary>
/// Creates an event declaration.
/// </summary>
public abstract SyntaxNode EventDeclaration(
string name,
SyntaxNode type,
Accessibility accessibility = Accessibility.NotApplicable,
DeclarationModifiers modifiers = default);
/// <summary>
/// Creates an event declaration from an existing event symbol
/// </summary>
public SyntaxNode EventDeclaration(IEventSymbol symbol)
{
return EventDeclaration(
symbol.Name,
TypeExpression(symbol.Type),
symbol.DeclaredAccessibility,
DeclarationModifiers.From(symbol));
}
/// <summary>
/// Creates a custom event declaration.
/// </summary>
public abstract SyntaxNode CustomEventDeclaration(
string name,
SyntaxNode type,
Accessibility accessibility = Accessibility.NotApplicable,
DeclarationModifiers modifiers = default,
IEnumerable<SyntaxNode> parameters = null,
IEnumerable<SyntaxNode> addAccessorStatements = null,
IEnumerable<SyntaxNode> removeAccessorStatements = null);
/// <summary>
/// Creates a custom event declaration from an existing event symbol.
/// </summary>
public SyntaxNode CustomEventDeclaration(
IEventSymbol symbol,
IEnumerable<SyntaxNode> addAccessorStatements = null,
IEnumerable<SyntaxNode> removeAccessorStatements = null)
{
var invoke = symbol.Type.GetMembers("Invoke").FirstOrDefault(m => m.Kind == SymbolKind.Method) as IMethodSymbol;
var parameters = invoke?.Parameters.Select(p => this.ParameterDeclaration(p));
return CustomEventDeclaration(
symbol.Name,
TypeExpression(symbol.Type),
symbol.DeclaredAccessibility,
DeclarationModifiers.From(symbol),
parameters: parameters,
addAccessorStatements: addAccessorStatements,
removeAccessorStatements: removeAccessorStatements);
}
/// <summary>
/// Creates a constructor declaration.
/// </summary>
public abstract SyntaxNode ConstructorDeclaration(
string containingTypeName = null,
IEnumerable<SyntaxNode> parameters = null,
Accessibility accessibility = Accessibility.NotApplicable,
DeclarationModifiers modifiers = default,
IEnumerable<SyntaxNode> baseConstructorArguments = null,
IEnumerable<SyntaxNode> statements = null);
/// <summary>
/// Create a constructor declaration using
/// </summary>
public SyntaxNode ConstructorDeclaration(
IMethodSymbol constructorMethod,
IEnumerable<SyntaxNode> baseConstructorArguments = null,
IEnumerable<SyntaxNode> statements = null)
{
return ConstructorDeclaration(
constructorMethod.ContainingType != null ? constructorMethod.ContainingType.Name : "New",
constructorMethod.Parameters.Select(p => ParameterDeclaration(p)),
constructorMethod.DeclaredAccessibility,
DeclarationModifiers.From(constructorMethod),
baseConstructorArguments,
statements);
}
/// <summary>
/// Converts method, property and indexer declarations into public interface implementations.
/// This is equivalent to an implicit C# interface implementation (you can access it via the interface or directly via the named member.)
/// </summary>
public SyntaxNode AsPublicInterfaceImplementation(SyntaxNode declaration, SyntaxNode interfaceType)
{
return this.AsPublicInterfaceImplementation(declaration, interfaceType, null);
}
/// <summary>
/// Converts method, property and indexer declarations into public interface implementations.
/// This is equivalent to an implicit C# interface implementation (you can access it via the interface or directly via the named member.)
/// </summary>
public abstract SyntaxNode AsPublicInterfaceImplementation(SyntaxNode declaration, SyntaxNode interfaceType, string interfaceMemberName);
/// <summary>
/// Converts method, property and indexer declarations into private interface implementations.
/// This is equivalent to a C# explicit interface implementation (you can declare it for access via the interface, but cannot call it directly).
/// </summary>
public SyntaxNode AsPrivateInterfaceImplementation(SyntaxNode declaration, SyntaxNode interfaceType)
{
return this.AsPrivateInterfaceImplementation(declaration, interfaceType, null);
}
/// <summary>
/// Converts method, property and indexer declarations into private interface implementations.
/// This is equivalent to a C# explicit interface implementation (you can declare it for access via the interface, but cannot call it directly).
/// </summary>
public abstract SyntaxNode AsPrivateInterfaceImplementation(SyntaxNode declaration, SyntaxNode interfaceType, string interfaceMemberName);
/// <summary>
/// Creates a class declaration.
/// </summary>
public abstract SyntaxNode ClassDeclaration(
string name,
IEnumerable<string> typeParameters = null,
Accessibility accessibility = Accessibility.NotApplicable,
DeclarationModifiers modifiers = default,
SyntaxNode baseType = null,
IEnumerable<SyntaxNode> interfaceTypes = null,
IEnumerable<SyntaxNode> members = null);
/// <summary>
/// Creates a struct declaration.
/// </summary>
public abstract SyntaxNode StructDeclaration(
string name,
IEnumerable<string> typeParameters = null,
Accessibility accessibility = Accessibility.NotApplicable,
DeclarationModifiers modifiers = default,
IEnumerable<SyntaxNode> interfaceTypes = null,
IEnumerable<SyntaxNode> members = null);
/// <summary>
/// Creates a interface declaration.
/// </summary>
public abstract SyntaxNode InterfaceDeclaration(
string name,
IEnumerable<string> typeParameters = null,
Accessibility accessibility = Accessibility.NotApplicable,
IEnumerable<SyntaxNode> interfaceTypes = null,
IEnumerable<SyntaxNode> members = null);
/// <summary>
/// Creates an enum declaration.
/// </summary>
public abstract SyntaxNode EnumDeclaration(
string name,
Accessibility accessibility = Accessibility.NotApplicable,
DeclarationModifiers modifiers = default,
IEnumerable<SyntaxNode> members = null);
/// <summary>
/// Creates an enum member
/// </summary>
public abstract SyntaxNode EnumMember(string name, SyntaxNode expression = null);
/// <summary>
/// Creates a delegate declaration.
/// </summary>
public abstract SyntaxNode DelegateDeclaration(
string name,
IEnumerable<SyntaxNode> parameters = null,
IEnumerable<string> typeParameters = null,
SyntaxNode returnType = null,
Accessibility accessibility = Accessibility.NotApplicable,
DeclarationModifiers modifiers = default);
/// <summary>
/// Creates a declaration matching an existing symbol.
/// </summary>
public SyntaxNode Declaration(ISymbol symbol)
{
switch (symbol.Kind)
{
case SymbolKind.Field:
return FieldDeclaration((IFieldSymbol)symbol);
case SymbolKind.Property:
var property = (IPropertySymbol)symbol;
if (property.IsIndexer)
{
return IndexerDeclaration(property);
}
else
{
return PropertyDeclaration(property);
}
case SymbolKind.Event:
var ev = (IEventSymbol)symbol;
return EventDeclaration(ev);
case SymbolKind.Method:
var method = (IMethodSymbol)symbol;
switch (method.MethodKind)
{
case MethodKind.Constructor:
case MethodKind.SharedConstructor:
return ConstructorDeclaration(method);
case MethodKind.Ordinary:
return MethodDeclaration(method);
case MethodKind.UserDefinedOperator:
return OperatorDeclaration(method);
}
break;
case SymbolKind.Parameter:
return ParameterDeclaration((IParameterSymbol)symbol);
case SymbolKind.NamedType:
var type = (INamedTypeSymbol)symbol;
SyntaxNode declaration = null;
switch (type.TypeKind)
{
case TypeKind.Class:
declaration = ClassDeclaration(
type.Name,
accessibility: type.DeclaredAccessibility,
modifiers: DeclarationModifiers.From(type),
baseType: TypeExpression(type.BaseType),
interfaceTypes: type.Interfaces.Select(i => TypeExpression(i)),
members: type.GetMembers().Where(CanBeDeclared).Select(m => Declaration(m)));
break;
case TypeKind.Struct:
declaration = StructDeclaration(
type.Name,
accessibility: type.DeclaredAccessibility,
modifiers: DeclarationModifiers.From(type),
interfaceTypes: type.Interfaces.Select(i => TypeExpression(i)),
members: type.GetMembers().Where(CanBeDeclared).Select(m => Declaration(m)));
break;
case TypeKind.Interface:
declaration = InterfaceDeclaration(
type.Name,
accessibility: type.DeclaredAccessibility,
interfaceTypes: type.Interfaces.Select(i => TypeExpression(i)),
members: type.GetMembers().Where(CanBeDeclared).Select(m => Declaration(m)));
break;
case TypeKind.Enum:
declaration = EnumDeclaration(
type.Name,
accessibility: type.DeclaredAccessibility,
members: type.GetMembers().Where(CanBeDeclared).Select(m => Declaration(m)));
break;
case TypeKind.Delegate:
var invoke = type.GetMembers("Invoke").First() as IMethodSymbol;
declaration = DelegateDeclaration(
type.Name,
parameters: invoke.Parameters.Select(p => ParameterDeclaration(p)),
returnType: TypeExpression(invoke.ReturnType),
accessibility: type.DeclaredAccessibility,
modifiers: DeclarationModifiers.From(type));
break;
}
if (declaration != null)
{
return WithTypeParametersAndConstraints(declaration, type.TypeParameters);
}
break;
}
throw new ArgumentException("Symbol cannot be converted to a declaration");
}
private static bool CanBeDeclared(ISymbol symbol)
{
switch (symbol.Kind)
{
case SymbolKind.Field:
case SymbolKind.Property:
case SymbolKind.Event:
case SymbolKind.Parameter:
return true;
case SymbolKind.Method:
var method = (IMethodSymbol)symbol;
switch (method.MethodKind)
{
case MethodKind.Constructor:
case MethodKind.SharedConstructor:
case MethodKind.Ordinary:
return true;
}
break;
case SymbolKind.NamedType:
var type = (INamedTypeSymbol)symbol;
switch (type.TypeKind)
{
case TypeKind.Class:
case TypeKind.Struct:
case TypeKind.Interface:
case TypeKind.Enum:
case TypeKind.Delegate:
return true;
}
break;
}
return false;
}
private SyntaxNode WithTypeParametersAndConstraints(SyntaxNode declaration, ImmutableArray<ITypeParameterSymbol> typeParameters)
{
if (typeParameters.Length > 0)
{
declaration = WithTypeParameters(declaration, typeParameters.Select(tp => tp.Name));
foreach (var tp in typeParameters)
{
if (tp.HasConstructorConstraint || tp.HasReferenceTypeConstraint || tp.HasValueTypeConstraint || tp.ConstraintTypes.Length > 0)
{
declaration = this.WithTypeConstraint(declaration, tp.Name,
kinds: (tp.HasConstructorConstraint ? SpecialTypeConstraintKind.Constructor : SpecialTypeConstraintKind.None)
| (tp.HasReferenceTypeConstraint ? SpecialTypeConstraintKind.ReferenceType : SpecialTypeConstraintKind.None)
| (tp.HasValueTypeConstraint ? SpecialTypeConstraintKind.ValueType : SpecialTypeConstraintKind.None),
types: tp.ConstraintTypes.Select(t => TypeExpression(t)));
}
}
}
return declaration;
}
internal abstract SyntaxNode WithExplicitInterfaceImplementations(SyntaxNode declaration, ImmutableArray<ISymbol> explicitInterfaceImplementations);
/// <summary>
/// Converts a declaration (method, class, etc) into a declaration with type parameters.
/// </summary>
public abstract SyntaxNode WithTypeParameters(SyntaxNode declaration, IEnumerable<string> typeParameters);
/// <summary>
/// Converts a declaration (method, class, etc) into a declaration with type parameters.
/// </summary>
public SyntaxNode WithTypeParameters(SyntaxNode declaration, params string[] typeParameters)
{
return WithTypeParameters(declaration, (IEnumerable<string>)typeParameters);
}
/// <summary>
/// Adds a type constraint to a type parameter of a declaration.
/// </summary>
public abstract SyntaxNode WithTypeConstraint(SyntaxNode declaration, string typeParameterName, SpecialTypeConstraintKind kinds, IEnumerable<SyntaxNode> types = null);
/// <summary>
/// Adds a type constraint to a type parameter of a declaration.
/// </summary>
public SyntaxNode WithTypeConstraint(SyntaxNode declaration, string typeParameterName, SpecialTypeConstraintKind kinds, params SyntaxNode[] types)
{
return WithTypeConstraint(declaration, typeParameterName, kinds, (IEnumerable<SyntaxNode>)types);
}
/// <summary>
/// Adds a type constraint to a type parameter of a declaration.
/// </summary>
public SyntaxNode WithTypeConstraint(SyntaxNode declaration, string typeParameterName, params SyntaxNode[] types)
{
return WithTypeConstraint(declaration, typeParameterName, SpecialTypeConstraintKind.None, (IEnumerable<SyntaxNode>)types);
}
/// <summary>
/// Creates a namespace declaration.
/// </summary>
/// <param name="name">The name of the namespace.</param>
/// <param name="declarations">Zero or more namespace or type declarations.</param>
public abstract SyntaxNode NamespaceDeclaration(SyntaxNode name, IEnumerable<SyntaxNode> declarations);
/// <summary>
/// Creates a namespace declaration.
/// </summary>
/// <param name="name">The name of the namespace.</param>
/// <param name="declarations">Zero or more namespace or type declarations.</param>
public SyntaxNode NamespaceDeclaration(SyntaxNode name, params SyntaxNode[] declarations)
{
return NamespaceDeclaration(name, (IEnumerable<SyntaxNode>)declarations);
}
/// <summary>
/// Creates a namespace declaration.
/// </summary>
/// <param name="name">The name of the namespace.</param>
/// <param name="declarations">Zero or more namespace or type declarations.</param>
public SyntaxNode NamespaceDeclaration(string name, IEnumerable<SyntaxNode> declarations)
{
return NamespaceDeclaration(DottedName(name), declarations);
}
/// <summary>
/// Creates a namespace declaration.
/// </summary>
/// <param name="name">The name of the namespace.</param>
/// <param name="declarations">Zero or more namespace or type declarations.</param>
public SyntaxNode NamespaceDeclaration(string name, params SyntaxNode[] declarations)
{
return NamespaceDeclaration(DottedName(name), (IEnumerable<SyntaxNode>)declarations);
}
/// <summary>
/// Creates a compilation unit declaration
/// </summary>
/// <param name="declarations">Zero or more namespace import, namespace or type declarations.</param>
public abstract SyntaxNode CompilationUnit(IEnumerable<SyntaxNode> declarations);
/// <summary>
/// Creates a compilation unit declaration
/// </summary>
/// <param name="declarations">Zero or more namespace import, namespace or type declarations.</param>
public SyntaxNode CompilationUnit(params SyntaxNode[] declarations)
{
return CompilationUnit((IEnumerable<SyntaxNode>)declarations);
}
/// <summary>
/// Creates a namespace import declaration.
/// </summary>
/// <param name="name">The name of the namespace being imported.</param>
public abstract SyntaxNode NamespaceImportDeclaration(SyntaxNode name);
/// <summary>
/// Creates a namespace import declaration.
/// </summary>
/// <param name="name">The name of the namespace being imported.</param>
public SyntaxNode NamespaceImportDeclaration(string name)
{
return NamespaceImportDeclaration(DottedName(name));
}
/// <summary>
/// Creates an alias import declaration.
/// </summary>
/// <param name="aliasIdentifierName">The name of the alias.</param>
/// <param name="symbol">The namespace or type to be aliased.</param>
public SyntaxNode AliasImportDeclaration(string aliasIdentifierName, INamespaceOrTypeSymbol symbol)
=> AliasImportDeclaration(aliasIdentifierName, NameExpression(symbol));
/// <summary>
/// Creates an alias import declaration.
/// </summary>
/// <param name="aliasIdentifierName">The name of the alias.</param>
/// <param name="name">The namespace or type to be aliased.</param>
public abstract SyntaxNode AliasImportDeclaration(string aliasIdentifierName, SyntaxNode name);
/// <summary>
/// Creates an attribute.
/// </summary>
public abstract SyntaxNode Attribute(SyntaxNode name, IEnumerable<SyntaxNode> attributeArguments = null);
/// <summary>
/// Creates an attribute.
/// </summary>
public SyntaxNode Attribute(string name, IEnumerable<SyntaxNode> attributeArguments = null)
{
return Attribute(DottedName(name), attributeArguments);
}
/// <summary>
/// Creates an attribute.
/// </summary>
public SyntaxNode Attribute(string name, params SyntaxNode[] attributeArguments)
{
return Attribute(name, (IEnumerable<SyntaxNode>)attributeArguments);
}
/// <summary>
/// Creates an attribute matching existing attribute data.
/// </summary>
public SyntaxNode Attribute(AttributeData attribute)
{
var args = attribute.ConstructorArguments.Select(a => this.AttributeArgument(this.TypedConstantExpression(a)))
.Concat(attribute.NamedArguments.Select(n => this.AttributeArgument(n.Key, this.TypedConstantExpression(n.Value))))
.ToImmutableReadOnlyListOrEmpty();
return Attribute(
name: this.TypeExpression(attribute.AttributeClass),
attributeArguments: args.Count > 0 ? args : null);
}
/// <summary>
/// Creates an attribute argument.
/// </summary>
public abstract SyntaxNode AttributeArgument(string name, SyntaxNode expression);
/// <summary>
/// Creates an attribute argument.
/// </summary>
public SyntaxNode AttributeArgument(SyntaxNode expression)
{
return AttributeArgument(null, expression);
}
/// <summary>
/// Removes all attributes from the declaration, including return attributes.
/// </summary>
public SyntaxNode RemoveAllAttributes(SyntaxNode declaration)
=> this.RemoveNodes(declaration, this.GetAttributes(declaration).Concat(this.GetReturnAttributes(declaration)));
/// <summary>
/// Removes comments from leading and trailing trivia, as well
/// as potentially removing comments from opening and closing tokens.
/// </summary>
internal abstract SyntaxNode RemoveAllComments(SyntaxNode node);
internal SyntaxNode RemoveLeadingAndTrailingComments(SyntaxNode node)
{
return node.WithLeadingTrivia(RemoveCommentLines(node.GetLeadingTrivia()))
.WithTrailingTrivia(RemoveCommentLines(node.GetTrailingTrivia()));
}
internal SyntaxToken RemoveLeadingAndTrailingComments(SyntaxToken token)
{
return token.WithLeadingTrivia(RemoveCommentLines(token.LeadingTrivia))
.WithTrailingTrivia(RemoveCommentLines(token.TrailingTrivia));
}
internal abstract SyntaxTriviaList RemoveCommentLines(SyntaxTriviaList syntaxTriviaList);
internal abstract bool IsRegularOrDocComment(SyntaxTrivia trivia);
internal SyntaxNode RemoveAllTypeInheritance(SyntaxNode declaration)
=> this.RemoveNodes(declaration, this.GetTypeInheritance(declaration));
internal abstract ImmutableArray<SyntaxNode> GetTypeInheritance(SyntaxNode declaration);
/// <summary>
/// Gets the attributes of a declaration, not including the return attributes.
/// </summary>
public abstract IReadOnlyList<SyntaxNode> GetAttributes(SyntaxNode declaration);
/// <summary>
/// Creates a new instance of the declaration with the attributes inserted.
/// </summary>
public abstract SyntaxNode InsertAttributes(SyntaxNode declaration, int index, IEnumerable<SyntaxNode> attributes);
/// <summary>
/// Creates a new instance of the declaration with the attributes inserted.
/// </summary>
public SyntaxNode InsertAttributes(SyntaxNode declaration, int index, params SyntaxNode[] attributes)
{
return this.InsertAttributes(declaration, index, (IEnumerable<SyntaxNode>)attributes);
}
/// <summary>
/// Creates a new instance of a declaration with the specified attributes added.
/// </summary>
public SyntaxNode AddAttributes(SyntaxNode declaration, IEnumerable<SyntaxNode> attributes)
{
return this.InsertAttributes(declaration, this.GetAttributes(declaration).Count, attributes);
}
/// <summary>
/// Creates a new instance of a declaration with the specified attributes added.
/// </summary>
public SyntaxNode AddAttributes(SyntaxNode declaration, params SyntaxNode[] attributes)
{
return AddAttributes(declaration, (IEnumerable<SyntaxNode>)attributes);
}
/// <summary>
/// Gets the return attributes from the declaration.
/// </summary>
public abstract IReadOnlyList<SyntaxNode> GetReturnAttributes(SyntaxNode declaration);
/// <summary>
/// Creates a new instance of a method declaration with return attributes inserted.
/// </summary>
public abstract SyntaxNode InsertReturnAttributes(SyntaxNode declaration, int index, IEnumerable<SyntaxNode> attributes);
/// <summary>
/// Creates a new instance of a method declaration with return attributes inserted.
/// </summary>
public SyntaxNode InsertReturnAttributes(SyntaxNode declaration, int index, params SyntaxNode[] attributes)
{
return this.InsertReturnAttributes(declaration, index, (IEnumerable<SyntaxNode>)attributes);
}
/// <summary>
/// Creates a new instance of a method declaration with return attributes added.
/// </summary>
public SyntaxNode AddReturnAttributes(SyntaxNode declaration, IEnumerable<SyntaxNode> attributes)
{
return this.InsertReturnAttributes(declaration, this.GetReturnAttributes(declaration).Count, attributes);
}
/// <summary>
/// Creates a new instance of a method declaration node with return attributes added.
/// </summary>
public SyntaxNode AddReturnAttributes(SyntaxNode declaration, params SyntaxNode[] attributes)
{
return AddReturnAttributes(declaration, (IEnumerable<SyntaxNode>)attributes);
}
/// <summary>
/// Gets the attribute arguments for the attribute declaration.
/// </summary>
public abstract IReadOnlyList<SyntaxNode> GetAttributeArguments(SyntaxNode attributeDeclaration);
/// <summary>
/// Creates a new instance of the attribute with the arguments inserted.
/// </summary>
public abstract SyntaxNode InsertAttributeArguments(SyntaxNode attributeDeclaration, int index, IEnumerable<SyntaxNode> attributeArguments);
/// <summary>
/// Creates a new instance of the attribute with the arguments added.
/// </summary>
public SyntaxNode AddAttributeArguments(SyntaxNode attributeDeclaration, IEnumerable<SyntaxNode> attributeArguments)
{
return this.InsertAttributeArguments(attributeDeclaration, this.GetAttributeArguments(attributeDeclaration).Count, attributeArguments);
}
/// <summary>
/// Gets the namespace imports that are part of the declaration.
/// </summary>
public abstract IReadOnlyList<SyntaxNode> GetNamespaceImports(SyntaxNode declaration);
/// <summary>
/// Creates a new instance of the declaration with the namespace imports inserted.
/// </summary>
public abstract SyntaxNode InsertNamespaceImports(SyntaxNode declaration, int index, IEnumerable<SyntaxNode> imports);
/// <summary>
/// Creates a new instance of the declaration with the namespace imports inserted.
/// </summary>
public SyntaxNode InsertNamespaceImports(SyntaxNode declaration, int index, params SyntaxNode[] imports)
{
return this.InsertNamespaceImports(declaration, index, (IEnumerable<SyntaxNode>)imports);
}
/// <summary>
/// Creates a new instance of the declaration with the namespace imports added.
/// </summary>
public SyntaxNode AddNamespaceImports(SyntaxNode declaration, IEnumerable<SyntaxNode> imports)
{