2 // complete.cs: Expression that are used for completion suggestions.
5 // Miguel de Icaza (miguel@ximian.com)
6 // Marek Safar (marek.safar@gmail.com)
8 // Copyright 2001, 2002, 2003 Ximian, Inc.
9 // Copyright 2003-2009 Novell, Inc.
11 // Completion* classes derive from ExpressionStatement as this allows
12 // them to pass through the parser in many conditions that require
13 // statements even when the expression is incomplete (for example
14 // completing inside a lambda
16 namespace Mono.CSharp {
18 using System.Collections;
19 using System.Reflection;
20 using System.Reflection.Emit;
24 // A common base class for Completing expressions, it
25 // is just a very simple ExpressionStatement
27 public abstract class CompletingExpression : ExpressionStatement {
28 public override void EmitStatement (EmitContext ec)
33 public override void Emit (EmitContext ec)
38 public override Expression CreateExpressionTree (ResolveContext ec)
44 public class CompletionSimpleName : CompletingExpression {
47 public CompletionSimpleName (string prefix, Location l)
53 public static void AppendResults (ArrayList results, string prefix, IEnumerable names)
55 foreach (string name in names){
59 if (!name.StartsWith (prefix))
62 if (results.Contains (name))
66 results.Add (name.Substring (prefix.Length));
73 public override Expression DoResolve (ResolveContext ec)
75 ArrayList results = new ArrayList ();
77 AppendResults (results, Prefix, Evaluator.GetVarNames ());
78 AppendResults (results, Prefix, ec.CurrentTypeDefinition.NamespaceEntry.CompletionGetTypesStartingWith (Prefix));
79 AppendResults (results, Prefix, Evaluator.GetUsingList ());
81 throw new CompletionResult (Prefix, (string []) results.ToArray (typeof (string)));
84 protected override void CloneTo (CloneContext clonectx, Expression t)
90 public class CompletionMemberAccess : CompletingExpression {
95 internal static MemberFilter CollectingFilter = new MemberFilter (Match);
97 static bool Match (MemberInfo m, object filter_criteria)
100 if (((FieldInfo) m).IsSpecialName)
104 if (m is MethodInfo){
105 if (((MethodInfo) m).IsSpecialName)
109 if (filter_criteria == null)
112 string n = (string) filter_criteria;
113 if (m.Name.StartsWith (n))
119 public CompletionMemberAccess (Expression e, string partial_name, Location l)
123 this.partial_name = partial_name;
126 public CompletionMemberAccess (Expression e, string partial_name, TypeArguments targs, Location l)
130 this.partial_name = partial_name;
134 public override Expression DoResolve (ResolveContext ec)
136 SimpleName original = expr as SimpleName;
137 Expression expr_resolved = expr.Resolve (ec,
138 ResolveFlags.VariableOrValue | ResolveFlags.Type |
139 ResolveFlags.Intermediate | ResolveFlags.DisableStructFlowAnalysis);
141 if (expr_resolved == null)
144 Type expr_type = expr_resolved.Type;
145 if (expr_type.IsPointer || expr_type == TypeManager.void_type || expr_type == TypeManager.null_type || expr_type == InternalType.AnonymousMethod) {
146 Unary.Error_OperatorCannotBeApplied (loc, ".", expr_type);
151 if (!targs.Resolve (ec))
155 ArrayList results = new ArrayList ();
156 if (expr_resolved is Namespace){
157 Namespace nexpr = expr_resolved as Namespace;
158 string namespaced_partial;
160 if (partial_name == null)
161 namespaced_partial = nexpr.Name;
163 namespaced_partial = nexpr.Name + "." + partial_name;
166 Console.WriteLine ("Workign with: namespaced partial {0}", namespaced_partial);
167 foreach (var x in ec.TypeContainer.NamespaceEntry.CompletionGetTypesStartingWith (ec.TypeContainer, namespaced_partial)){
168 Console.WriteLine (" {0}", x);
172 CompletionSimpleName.AppendResults (
175 ec.CurrentTypeDefinition.NamespaceEntry.CompletionGetTypesStartingWith (namespaced_partial));
177 MemberInfo [] result = expr_type.FindMembers (
178 MemberTypes.All, BindingFlags.Instance | BindingFlags.Static | BindingFlags.Public,
179 CollectingFilter, partial_name);
181 foreach (MemberInfo r in result){
184 MethodBase rasb = r as MethodBase;
185 if (rasb != null && rasb.IsSpecialName)
188 if (partial_name == null)
191 name = r.Name.Substring (partial_name.Length);
193 if (results.Contains (name))
199 throw new CompletionResult (partial_name == null ? "" : partial_name, (string []) results.ToArray (typeof (string)));
202 protected override void CloneTo (CloneContext clonectx, Expression t)
204 CompletionMemberAccess target = (CompletionMemberAccess) t;
207 target.targs = targs.Clone ();
209 target.expr = expr.Clone (clonectx);
213 public class CompletionElementInitializer : CompletingExpression {
216 public CompletionElementInitializer (string partial_name, Location l)
218 this.partial_name = partial_name;
222 public override Expression DoResolve (ResolveContext ec)
224 MemberList members = TypeManager.FindMembers (
225 ec.CurrentInitializerVariable.Type,
226 MemberTypes.Field | MemberTypes.Property,
227 BindingFlags.Instance | BindingFlags.Static | BindingFlags.Public,
228 CompletionMemberAccess.CollectingFilter, partial_name);
230 string [] result = new string [members.Count];
232 foreach (MemberInfo mi in members){
235 if (partial_name == null)
238 name = mi.Name.Substring (partial_name.Length);
243 if (partial_name != null && i > 0 && result [0] == "")
244 throw new CompletionResult ("", new string [] { "=" });
246 throw new CompletionResult (partial_name == null ? "" : partial_name, result);
249 protected override void CloneTo (CloneContext clonectx, Expression t)