1 | // Copyright (c) 2010-2013 AlphaSierraPapa for the SharpDevelop Team |
---|
2 | // |
---|
3 | // Permission is hereby granted, free of charge, to any person obtaining a copy of this |
---|
4 | // software and associated documentation files (the "Software"), to deal in the Software |
---|
5 | // without restriction, including without limitation the rights to use, copy, modify, merge, |
---|
6 | // publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons |
---|
7 | // to whom the Software is furnished to do so, subject to the following conditions: |
---|
8 | // |
---|
9 | // The above copyright notice and this permission notice shall be included in all copies or |
---|
10 | // substantial portions of the Software. |
---|
11 | // |
---|
12 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, |
---|
13 | // INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR |
---|
14 | // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE |
---|
15 | // FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
---|
16 | // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
---|
17 | // DEALINGS IN THE SOFTWARE. |
---|
18 | |
---|
19 | using System; |
---|
20 | using System.Collections.Generic; |
---|
21 | using System.Linq; |
---|
22 | using System.Text; |
---|
23 | using ICSharpCode.NRefactory.Semantics; |
---|
24 | using ICSharpCode.NRefactory.Utils; |
---|
25 | |
---|
26 | namespace ICSharpCode.NRefactory.TypeSystem.Implementation |
---|
27 | { |
---|
28 | /// <summary> |
---|
29 | /// Default implementation for IUnresolvedParameter. |
---|
30 | /// </summary> |
---|
31 | [Serializable] |
---|
32 | public sealed class DefaultUnresolvedParameter : IUnresolvedParameter, IFreezable, ISupportsInterning |
---|
33 | { |
---|
34 | string name = string.Empty; |
---|
35 | ITypeReference type = SpecialType.UnknownType; |
---|
36 | IList<IUnresolvedAttribute> attributes; |
---|
37 | IConstantValue defaultValue; |
---|
38 | DomRegion region; |
---|
39 | byte flags; |
---|
40 | |
---|
41 | public DefaultUnresolvedParameter() |
---|
42 | { |
---|
43 | } |
---|
44 | |
---|
45 | public DefaultUnresolvedParameter(ITypeReference type, string name) |
---|
46 | { |
---|
47 | if (type == null) |
---|
48 | throw new ArgumentNullException("type"); |
---|
49 | if (name == null) |
---|
50 | throw new ArgumentNullException("name"); |
---|
51 | this.type = type; |
---|
52 | this.name = name; |
---|
53 | } |
---|
54 | |
---|
55 | void FreezeInternal() |
---|
56 | { |
---|
57 | attributes = FreezableHelper.FreezeListAndElements(attributes); |
---|
58 | FreezableHelper.Freeze(defaultValue); |
---|
59 | } |
---|
60 | |
---|
61 | public string Name { |
---|
62 | get { return name; } |
---|
63 | set { |
---|
64 | if (value == null) |
---|
65 | throw new ArgumentNullException("value"); |
---|
66 | FreezableHelper.ThrowIfFrozen(this); |
---|
67 | name = value; |
---|
68 | } |
---|
69 | } |
---|
70 | |
---|
71 | public ITypeReference Type { |
---|
72 | get { return type; } |
---|
73 | set { |
---|
74 | if (value == null) |
---|
75 | throw new ArgumentNullException("value"); |
---|
76 | FreezableHelper.ThrowIfFrozen(this); |
---|
77 | type = value; |
---|
78 | } |
---|
79 | } |
---|
80 | |
---|
81 | public IList<IUnresolvedAttribute> Attributes { |
---|
82 | get { |
---|
83 | if (attributes == null) |
---|
84 | attributes = new List<IUnresolvedAttribute>(); |
---|
85 | return attributes; |
---|
86 | } |
---|
87 | } |
---|
88 | |
---|
89 | public IConstantValue DefaultValue { |
---|
90 | get { return defaultValue; } |
---|
91 | set { |
---|
92 | FreezableHelper.ThrowIfFrozen(this); |
---|
93 | defaultValue = value; |
---|
94 | } |
---|
95 | } |
---|
96 | |
---|
97 | public DomRegion Region { |
---|
98 | get { return region; } |
---|
99 | set { |
---|
100 | FreezableHelper.ThrowIfFrozen(this); |
---|
101 | region = value; |
---|
102 | } |
---|
103 | } |
---|
104 | |
---|
105 | bool HasFlag(byte flag) |
---|
106 | { |
---|
107 | return (this.flags & flag) != 0; |
---|
108 | } |
---|
109 | void SetFlag(byte flag, bool value) |
---|
110 | { |
---|
111 | FreezableHelper.ThrowIfFrozen(this); |
---|
112 | if (value) |
---|
113 | this.flags |= flag; |
---|
114 | else |
---|
115 | this.flags &= unchecked((byte)~flag); |
---|
116 | } |
---|
117 | |
---|
118 | public bool IsFrozen { |
---|
119 | get { return HasFlag(1); } |
---|
120 | } |
---|
121 | |
---|
122 | public void Freeze() |
---|
123 | { |
---|
124 | if (!this.IsFrozen) { |
---|
125 | FreezeInternal(); |
---|
126 | this.flags |= 1; |
---|
127 | } |
---|
128 | } |
---|
129 | |
---|
130 | public bool IsRef { |
---|
131 | get { return HasFlag(2); } |
---|
132 | set { SetFlag(2, value); } |
---|
133 | } |
---|
134 | |
---|
135 | public bool IsOut { |
---|
136 | get { return HasFlag(4); } |
---|
137 | set { SetFlag(4, value); } |
---|
138 | } |
---|
139 | |
---|
140 | public bool IsParams { |
---|
141 | get { return HasFlag(8); } |
---|
142 | set { SetFlag(8, value); } |
---|
143 | } |
---|
144 | |
---|
145 | public bool IsOptional { |
---|
146 | get { return this.DefaultValue != null; } |
---|
147 | } |
---|
148 | |
---|
149 | int ISupportsInterning.GetHashCodeForInterning() |
---|
150 | { |
---|
151 | unchecked { |
---|
152 | int hashCode = 1919191 ^ (flags & ~1); |
---|
153 | hashCode *= 31; |
---|
154 | hashCode += type.GetHashCode(); |
---|
155 | hashCode *= 31; |
---|
156 | hashCode += name.GetHashCode(); |
---|
157 | if (attributes != null) { |
---|
158 | foreach (var attr in attributes) |
---|
159 | hashCode ^= attr.GetHashCode (); |
---|
160 | } |
---|
161 | if (defaultValue != null) |
---|
162 | hashCode ^= defaultValue.GetHashCode (); |
---|
163 | return hashCode; |
---|
164 | } |
---|
165 | } |
---|
166 | |
---|
167 | bool ISupportsInterning.EqualsForInterning(ISupportsInterning other) |
---|
168 | { |
---|
169 | // compare everything except for the IsFrozen flag |
---|
170 | DefaultUnresolvedParameter p = other as DefaultUnresolvedParameter; |
---|
171 | return p != null && type == p.type && name == p.name && |
---|
172 | defaultValue == p.defaultValue && region == p.region && (flags & ~1) == (p.flags & ~1) && ListEquals(attributes, p.attributes); |
---|
173 | } |
---|
174 | |
---|
175 | static bool ListEquals(IList<IUnresolvedAttribute> list1, IList<IUnresolvedAttribute> list2) |
---|
176 | { |
---|
177 | return (list1 ?? EmptyList<IUnresolvedAttribute>.Instance).SequenceEqual(list2 ?? EmptyList<IUnresolvedAttribute>.Instance); |
---|
178 | } |
---|
179 | |
---|
180 | public override string ToString() |
---|
181 | { |
---|
182 | StringBuilder b = new StringBuilder(); |
---|
183 | if (IsRef) |
---|
184 | b.Append("ref "); |
---|
185 | if (IsOut) |
---|
186 | b.Append("out "); |
---|
187 | if (IsParams) |
---|
188 | b.Append("params "); |
---|
189 | b.Append(name); |
---|
190 | b.Append(':'); |
---|
191 | b.Append(type.ToString()); |
---|
192 | if (defaultValue != null) { |
---|
193 | b.Append(" = "); |
---|
194 | b.Append(defaultValue.ToString()); |
---|
195 | } |
---|
196 | return b.ToString(); |
---|
197 | } |
---|
198 | |
---|
199 | static bool IsOptionalAttribute (IType attributeType) |
---|
200 | { |
---|
201 | return attributeType.Name == "OptionalAttribute" && attributeType.Namespace == "System.Runtime.InteropServices"; |
---|
202 | } |
---|
203 | |
---|
204 | public IParameter CreateResolvedParameter(ITypeResolveContext context) |
---|
205 | { |
---|
206 | Freeze(); |
---|
207 | if (defaultValue != null) { |
---|
208 | return new ResolvedParameterWithDefaultValue(defaultValue, context) { |
---|
209 | Type = type.Resolve(context), |
---|
210 | Name = name, |
---|
211 | Region = region, |
---|
212 | Attributes = attributes.CreateResolvedAttributes(context), |
---|
213 | IsRef = this.IsRef, |
---|
214 | IsOut = this.IsOut, |
---|
215 | IsParams = this.IsParams |
---|
216 | }; |
---|
217 | } else { |
---|
218 | var owner = context.CurrentMember as IParameterizedMember; |
---|
219 | var resolvedAttributes = attributes.CreateResolvedAttributes (context); |
---|
220 | bool isOptional = resolvedAttributes != null && resolvedAttributes.Any (a => IsOptionalAttribute (a.AttributeType)); |
---|
221 | return new DefaultParameter (type.Resolve (context), name, owner, region, |
---|
222 | resolvedAttributes, IsRef, IsOut, IsParams, isOptional); |
---|
223 | } |
---|
224 | } |
---|
225 | |
---|
226 | sealed class ResolvedParameterWithDefaultValue : IParameter |
---|
227 | { |
---|
228 | readonly IConstantValue defaultValue; |
---|
229 | readonly ITypeResolveContext context; |
---|
230 | |
---|
231 | public ResolvedParameterWithDefaultValue(IConstantValue defaultValue, ITypeResolveContext context) |
---|
232 | { |
---|
233 | this.defaultValue = defaultValue; |
---|
234 | this.context = context; |
---|
235 | } |
---|
236 | |
---|
237 | SymbolKind ISymbol.SymbolKind { get { return SymbolKind.Parameter; } } |
---|
238 | public IParameterizedMember Owner { get { return context.CurrentMember as IParameterizedMember; } } |
---|
239 | public IType Type { get; internal set; } |
---|
240 | public string Name { get; internal set; } |
---|
241 | public DomRegion Region { get; internal set; } |
---|
242 | public IList<IAttribute> Attributes { get; internal set; } |
---|
243 | public bool IsRef { get; internal set; } |
---|
244 | public bool IsOut { get; internal set; } |
---|
245 | public bool IsParams { get; internal set; } |
---|
246 | public bool IsOptional { get { return true; } } |
---|
247 | bool IVariable.IsConst { get { return false; } } |
---|
248 | |
---|
249 | ResolveResult resolvedDefaultValue; |
---|
250 | |
---|
251 | public object ConstantValue { |
---|
252 | get { |
---|
253 | ResolveResult rr = LazyInit.VolatileRead(ref this.resolvedDefaultValue); |
---|
254 | if (rr == null) { |
---|
255 | rr = defaultValue.Resolve(context); |
---|
256 | LazyInit.GetOrSet(ref this.resolvedDefaultValue, rr); |
---|
257 | } |
---|
258 | return rr.ConstantValue; |
---|
259 | } |
---|
260 | } |
---|
261 | |
---|
262 | public override string ToString() |
---|
263 | { |
---|
264 | return DefaultParameter.ToString(this); |
---|
265 | } |
---|
266 | |
---|
267 | public ISymbolReference ToReference() |
---|
268 | { |
---|
269 | if (Owner == null) |
---|
270 | return new ParameterReference(Type.ToTypeReference(), Name, Region, IsRef, IsOut, IsParams, true, ConstantValue); |
---|
271 | return new OwnedParameterReference(Owner.ToReference(), Owner.Parameters.IndexOf(this)); |
---|
272 | } |
---|
273 | } |
---|
274 | } |
---|
275 | } |
---|