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
|
using System;
using System.Collections;
using System.Collections.Generic;
namespace Godot
{
using Array = Godot.Collections.Array;
using Dictionary = Godot.Collections.Dictionary;
static class MarshalUtils
{
/// <summary>
/// Returns <see langword="true"/> if the generic type definition of <paramref name="type"/>
/// is <see cref="Godot.Collections.Array{T}"/>; otherwise returns <see langword="false"/>.
/// </summary>
/// <exception cref="System.InvalidOperationException">
/// <paramref name="type"/> is not a generic type. That is, IsGenericType returns false.
/// </exception>
static bool TypeIsGenericArray(Type type)
{
return type.GetGenericTypeDefinition() == typeof(Godot.Collections.Array<>);
}
/// <summary>
/// Returns <see langword="true"/> if the generic type definition of <paramref name="type"/>
/// is <see cref="Godot.Collections.Dictionary{T}"/>; otherwise returns <see langword="false"/>.
/// </summary>
/// <exception cref="System.InvalidOperationException">
/// <paramref name="type"/> is not a generic type. That is, IsGenericType returns false.
/// </exception>
static bool TypeIsGenericDictionary(Type type)
{
return type.GetGenericTypeDefinition() == typeof(Godot.Collections.Dictionary<,>);
}
static void ArrayGetElementType(Type arrayType, out Type elementType)
{
elementType = arrayType.GetGenericArguments()[0];
}
static void DictionaryGetKeyValueTypes(Type dictionaryType, out Type keyType, out Type valueType)
{
var genericArgs = dictionaryType.GetGenericArguments();
keyType = genericArgs[0];
valueType = genericArgs[1];
}
static bool GenericIEnumerableIsAssignableFromType(Type type, out Type elementType)
{
if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(IEnumerable<>))
{
elementType = type.GetGenericArguments()[0];
return true;
}
foreach (var interfaceType in type.GetInterfaces())
{
if (interfaceType.IsGenericType && interfaceType.GetGenericTypeDefinition() == typeof(IEnumerable<>))
{
elementType = interfaceType.GetGenericArguments()[0];
return true;
}
}
Type baseType = type.BaseType;
if (baseType == null)
{
elementType = null;
return false;
}
return GenericIEnumerableIsAssignableFromType(baseType, out elementType);
}
static bool GenericIDictionaryIsAssignableFromType(Type type, out Type keyType, out Type valueType)
{
if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(IDictionary<,>))
{
var genericArgs = type.GetGenericArguments();
keyType = genericArgs[0];
valueType = genericArgs[1];
return true;
}
foreach (var interfaceType in type.GetInterfaces())
{
if (interfaceType.IsGenericType && interfaceType.GetGenericTypeDefinition() == typeof(IDictionary<,>))
{
var genericArgs = interfaceType.GetGenericArguments();
keyType = genericArgs[0];
valueType = genericArgs[1];
return true;
}
}
Type baseType = type.BaseType;
if (baseType == null)
{
keyType = null;
valueType = null;
return false;
}
return GenericIDictionaryIsAssignableFromType(baseType, out keyType, out valueType);
}
static Type MakeGenericArrayType(Type elemType)
{
return typeof(Godot.Collections.Array<>).MakeGenericType(elemType);
}
static Type MakeGenericDictionaryType(Type keyType, Type valueType)
{
return typeof(Godot.Collections.Dictionary<,>).MakeGenericType(keyType, valueType);
}
// TODO Add support for IEnumerable<T> and IDictionary<TKey, TValue>
// TODO: EnumerableToArray and IDictionaryToDictionary can be optimized
internal static void EnumerableToArray(IEnumerable enumerable, IntPtr godotArrayPtr)
{
if (enumerable is ICollection collection)
{
int count = collection.Count;
object[] tempArray = new object[count];
collection.CopyTo(tempArray, 0);
for (int i = 0; i < count; i++)
{
Array.godot_icall_Array_Add(godotArrayPtr, tempArray[i]);
}
}
else
{
foreach (object element in enumerable)
{
Array.godot_icall_Array_Add(godotArrayPtr, element);
}
}
}
internal static void IDictionaryToDictionary(IDictionary dictionary, IntPtr godotDictionaryPtr)
{
foreach (DictionaryEntry entry in dictionary)
{
Dictionary.godot_icall_Dictionary_Add(godotDictionaryPtr, entry.Key, entry.Value);
}
}
internal static void GenericIDictionaryToDictionary(object dictionary, IntPtr godotDictionaryPtr)
{
#if DEBUG
if (!GenericIDictionaryIsAssignableFromType(dictionary.GetType()))
throw new InvalidOperationException("The type does not implement IDictionary<,>");
#endif
// TODO: Can we optimize this?
var keys = ((IEnumerable)dictionary.GetType().GetProperty("Keys").GetValue(dictionary)).GetEnumerator();
var values = ((IEnumerable)dictionary.GetType().GetProperty("Values").GetValue(dictionary)).GetEnumerator();
while (keys.MoveNext() && values.MoveNext())
{
object key = keys.Current;
object value = values.Current;
Dictionary.godot_icall_Dictionary_Add(godotDictionaryPtr, key, value);
}
}
}
}
|