1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.Text;
namespace Godot.SourceGenerators
{
[Generator]
public class ScriptPathAttributeGenerator : ISourceGenerator
{
public void Execute(GeneratorExecutionContext context)
{
if (context.AreGodotSourceGeneratorsDisabled())
return;
if (context.IsGodotToolsProject())
return;
// NOTE: NotNullWhen diagnostics don't work on projects targeting .NET Standard 2.0
// ReSharper disable once ReplaceWithStringIsNullOrEmpty
if (!context.TryGetGlobalAnalyzerProperty("GodotProjectDirBase64", out string? godotProjectDir) || godotProjectDir!.Length == 0)
{
if (!context.TryGetGlobalAnalyzerProperty("GodotProjectDir", out godotProjectDir) || godotProjectDir!.Length == 0)
{
throw new InvalidOperationException("Property 'GodotProjectDir' is null or empty.");
}
}
else
{
// Workaround for https://github.com/dotnet/roslyn/issues/51692
godotProjectDir = Encoding.UTF8.GetString(Convert.FromBase64String(godotProjectDir));
}
Dictionary<INamedTypeSymbol, IEnumerable<ClassDeclarationSyntax>> godotClasses = context
.Compilation.SyntaxTrees
.SelectMany(tree =>
tree.GetRoot().DescendantNodes()
.OfType<ClassDeclarationSyntax>()
// Ignore inner classes
.Where(cds => !cds.IsNested())
.SelectGodotScriptClasses(context.Compilation)
// Report and skip non-partial classes
.Where(x =>
{
if (x.cds.IsPartial())
return true;
Common.ReportNonPartialGodotScriptClass(context, x.cds, x.symbol);
return false;
})
)
.Where(x =>
// Ignore classes whose name is not the same as the file name
Path.GetFileNameWithoutExtension(x.cds.SyntaxTree.FilePath) == x.symbol.Name &&
// Ignore generic classes
!x.symbol.IsGenericType)
.GroupBy(x => x.symbol)
.ToDictionary(g => g.Key, g => g.Select(x => x.cds));
foreach (var godotClass in godotClasses)
{
VisitGodotScriptClass(context, godotProjectDir,
symbol: godotClass.Key,
classDeclarations: godotClass.Value);
}
if (godotClasses.Count <= 0)
return;
AddScriptTypesAssemblyAttr(context, godotClasses);
}
private static void VisitGodotScriptClass(
GeneratorExecutionContext context,
string godotProjectDir,
INamedTypeSymbol symbol,
IEnumerable<ClassDeclarationSyntax> classDeclarations
)
{
var attributes = new StringBuilder();
// Remember syntax trees for which we already added an attribute, to prevent unnecessary duplicates.
var attributedTrees = new List<SyntaxTree>();
foreach (var cds in classDeclarations)
{
if (attributedTrees.Contains(cds.SyntaxTree))
continue;
attributedTrees.Add(cds.SyntaxTree);
if (attributes.Length != 0)
attributes.Append("\n");
attributes.Append(@"[ScriptPathAttribute(""res://");
attributes.Append(RelativeToDir(cds.SyntaxTree.FilePath, godotProjectDir));
attributes.Append(@""")]");
}
INamespaceSymbol namespaceSymbol = symbol.ContainingNamespace;
string classNs = namespaceSymbol != null && !namespaceSymbol.IsGlobalNamespace ?
namespaceSymbol.FullQualifiedNameOmitGlobal() :
string.Empty;
bool hasNamespace = classNs.Length != 0;
string uniqueHint = symbol.FullQualifiedNameOmitGlobal().SanitizeQualifiedNameForUniqueHint()
+ "_ScriptPath.generated";
var source = new StringBuilder();
// using Godot;
// namespace {classNs} {
// {attributesBuilder}
// partial class {className} { }
// }
source.Append("using Godot;\n");
if (hasNamespace)
{
source.Append("namespace ");
source.Append(classNs);
source.Append(" {\n\n");
}
source.Append(attributes);
source.Append("\npartial class ");
source.Append(symbol.NameWithTypeParameters());
source.Append("\n{\n}\n");
if (hasNamespace)
{
source.Append("\n}\n");
}
context.AddSource(uniqueHint, SourceText.From(source.ToString(), Encoding.UTF8));
}
private static void AddScriptTypesAssemblyAttr(GeneratorExecutionContext context,
Dictionary<INamedTypeSymbol, IEnumerable<ClassDeclarationSyntax>> godotClasses)
{
var sourceBuilder = new StringBuilder();
sourceBuilder.Append("[assembly:");
sourceBuilder.Append(GodotClasses.AssemblyHasScriptsAttr);
sourceBuilder.Append("(new System.Type[] {");
bool first = true;
foreach (var godotClass in godotClasses)
{
var qualifiedName = godotClass.Key.ToDisplayString(
NullableFlowState.NotNull, SymbolDisplayFormat.FullyQualifiedFormat
.WithGenericsOptions(SymbolDisplayGenericsOptions.None));
if (!first)
sourceBuilder.Append(", ");
first = false;
sourceBuilder.Append("typeof(");
sourceBuilder.Append(qualifiedName);
sourceBuilder.Append(")");
}
sourceBuilder.Append("})]\n");
context.AddSource("AssemblyScriptTypes.generated",
SourceText.From(sourceBuilder.ToString(), Encoding.UTF8));
}
public void Initialize(GeneratorInitializationContext context)
{
}
private static string RelativeToDir(string path, string dir)
{
// Make sure the directory ends with a path separator
dir = Path.Combine(dir, " ").TrimEnd();
if (Path.DirectorySeparatorChar == '\\')
dir = dir.Replace("/", "\\") + "\\";
var fullPath = new Uri(Path.GetFullPath(path), UriKind.Absolute);
var relRoot = new Uri(Path.GetFullPath(dir), UriKind.Absolute);
// MakeRelativeUri converts spaces to %20, hence why we need UnescapeDataString
return Uri.UnescapeDataString(relRoot.MakeRelativeUri(fullPath).ToString());
}
}
}
|