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
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
|
// 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.
//*****************************************************************************
//
// CustAttr_Import.cpp
//
// Implementation for the meta data custom attribute import code (code:IMetaDataImport).
//
//*****************************************************************************
#include "stdafx.h"
#include "regmeta.h"
#include "metadata.h"
#include "corerror.h"
#include "mdutil.h"
#include "rwutil.h"
#include "mdlog.h"
#include "importhelper.h"
#include "mdperf.h"
#include "posterror.h"
#include "cahlprinternal.h"
#include "custattr.h"
#include "corhdr.h"
#include <metamodelrw.h>
//*****************************************************************************
// Implementation of hash for custom attribute types.
//*****************************************************************************
unsigned int CCustAttrHash::Hash(const CCustAttrHashKey *pData)
{
return static_cast<unsigned int>(pData->tkType);
} // unsigned long CCustAttrHash::Hash()
unsigned int CCustAttrHash::Compare(const CCustAttrHashKey *p1, CCustAttrHashKey *p2)
{
if (p1->tkType == p2->tkType)
return 0;
return 1;
} // unsigned long CCustAttrHash::Compare()
CCustAttrHash::ELEMENTSTATUS CCustAttrHash::Status(CCustAttrHashKey *p)
{
if (p->tkType == FREE)
return (FREE);
if (p->tkType == DELETED)
return (DELETED);
return (USED);
} // CCustAttrHash::ELEMENTSTATUS CCustAttrHash::Status()
void CCustAttrHash::SetStatus(CCustAttrHashKey *p, CCustAttrHash::ELEMENTSTATUS s)
{
p->tkType = s;
} // void CCustAttrHash::SetStatus()
void* CCustAttrHash::GetKey(CCustAttrHashKey *p)
{
return &p->tkType;
} // void* CCustAttrHash::GetKey()
//*****************************************************************************
// Get the value of a CustomAttribute, using only TypeName for lookup.
//*****************************************************************************
STDMETHODIMP RegMeta::GetCustomAttributeByName( // S_OK or error.
mdToken tkObj, // [IN] Object with Custom Attribute.
LPCWSTR wzName, // [IN] Name of desired Custom Attribute.
const void **ppData, // [OUT] Put pointer to data here.
ULONG *pcbData) // [OUT] Put size of data here.
{
HRESULT hr; // A result.
BEGIN_ENTRYPOINT_NOTHROW;
LPUTF8 szName; // Name in UFT8.
int iLen; // A length.
CMiniMdRW *pMiniMd = NULL;
START_MD_PERF();
LOCKREAD();
pMiniMd = &(m_pStgdb->m_MiniMd);
iLen = WszWideCharToMultiByte(CP_UTF8,0, wzName,-1, NULL,0, 0,0);
szName = (LPUTF8)_alloca(iLen);
VERIFY(WszWideCharToMultiByte(CP_UTF8,0, wzName,-1, szName,iLen, 0,0));
hr = ImportHelper::GetCustomAttributeByName(pMiniMd, tkObj, szName, ppData, pcbData);
ErrExit:
STOP_MD_PERF(GetCustomAttributeByName);
END_ENTRYPOINT_NOTHROW;
return hr;
} // STDMETHODIMP RegMeta::GetCustomAttributeByName()
//*****************************************************************************
// Enumerate the CustomAttributes for a given token.
//*****************************************************************************
STDMETHODIMP RegMeta::EnumCustomAttributes(
HCORENUM *phEnum, // Pointer to the enum.
mdToken tk, // Token to scope the enumeration.
mdToken tkType, // Type to limit the enumeration.
mdCustomAttribute rCustomAttributes[], // Put CustomAttributes here.
ULONG cMax, // Max CustomAttributes to put.
ULONG *pcCustomAttributes) // Put # tokens returned here.
{
HRESULT hr = S_OK;
BEGIN_ENTRYPOINT_NOTHROW;
HENUMInternal **ppmdEnum = reinterpret_cast<HENUMInternal **> (phEnum);
ULONG ridStart;
ULONG ridEnd;
HENUMInternal *pEnum = *ppmdEnum;
CustomAttributeRec *pRec;
ULONG index;
LOG((LOGMD, "RegMeta::EnumCustomAttributes(0x%08x, 0x%08x, 0x%08x, 0x%08x, 0x%08x, 0x%08x)\n",
phEnum, tk, tkType, rCustomAttributes, cMax, pcCustomAttributes));
START_MD_PERF();
LOCKREAD();
if ( pEnum == 0 )
{
// instantiating a new ENUM
CMiniMdRW *pMiniMd = &(m_pStgdb->m_MiniMd);
CLookUpHash *pHashTable = pMiniMd->m_pLookUpHashs[TBL_CustomAttribute];
// Does caller want all custom Values?
if (IsNilToken(tk))
{
IfFailGo( HENUMInternal::CreateSimpleEnum(mdtCustomAttribute, 1, pMiniMd->getCountCustomAttributes()+1, &pEnum) );
}
else
{ // Scope by some object.
if ( pMiniMd->IsSorted( TBL_CustomAttribute ) )
{
// Get CustomAttributes for the object.
IfFailGo(pMiniMd->getCustomAttributeForToken(tk, &ridEnd, &ridStart));
if (IsNilToken(tkType))
{
// Simple enumerator for object's entire list.
IfFailGo( HENUMInternal::CreateSimpleEnum( mdtCustomAttribute, ridStart, ridEnd, &pEnum) );
}
else
{
// Dynamic enumerator for subsetted list.
IfFailGo( HENUMInternal::CreateDynamicArrayEnum( mdtCustomAttribute, &pEnum) );
for (index = ridStart; index < ridEnd; index ++ )
{
IfFailGo(pMiniMd->GetCustomAttributeRecord(index, &pRec));
if (tkType == pMiniMd->getTypeOfCustomAttribute(pRec))
{
IfFailGo( HENUMInternal::AddElementToEnum(pEnum, TokenFromRid(index, mdtCustomAttribute) ) );
}
}
}
}
else
{
if (pHashTable)
{
// table is not sorted but hash is built
// We want to create dynmaic array to hold the dynamic enumerator.
TOKENHASHENTRY *p;
ULONG iHash;
int pos;
mdToken tkParentTmp;
mdToken tkTypeTmp;
// Hash the data.
iHash = pMiniMd->HashCustomAttribute(tk);
IfFailGo( HENUMInternal::CreateDynamicArrayEnum( mdtCustomAttribute, &pEnum) );
// Go through every entry in the hash chain looking for ours.
for (p = pHashTable->FindFirst(iHash, pos);
p;
p = pHashTable->FindNext(pos))
{
CustomAttributeRec *pCustomAttribute;
IfFailGo(pMiniMd->GetCustomAttributeRecord(RidFromToken(p->tok), &pCustomAttribute));
tkParentTmp = pMiniMd->getParentOfCustomAttribute(pCustomAttribute);
tkTypeTmp = pMiniMd->getTypeOfCustomAttribute(pCustomAttribute);
if (tkParentTmp == tk)
{
if (IsNilToken(tkType) || tkType == tkTypeTmp)
{
// compare the blob value
IfFailGo( HENUMInternal::AddElementToEnum(pEnum, TokenFromRid(p->tok, mdtCustomAttribute )) );
}
}
}
}
else
{
// table is not sorted and hash is not built so we have to create dynmaic array
// create the dynamic enumerator and loop through CA table linearly
//
ridStart = 1;
ridEnd = pMiniMd->getCountCustomAttributes() + 1;
IfFailGo( HENUMInternal::CreateDynamicArrayEnum( mdtCustomAttribute, &pEnum) );
for (index = ridStart; index < ridEnd; index ++ )
{
IfFailGo(pMiniMd->GetCustomAttributeRecord(index, &pRec));
if ( tk == pMiniMd->getParentOfCustomAttribute(pRec) &&
(tkType == pMiniMd->getTypeOfCustomAttribute(pRec) || IsNilToken(tkType)))
{
IfFailGo( HENUMInternal::AddElementToEnum(pEnum, TokenFromRid(index, mdtCustomAttribute) ) );
}
}
}
}
}
// set the output parameter
*ppmdEnum = pEnum;
}
// fill the output token buffer
hr = HENUMInternal::EnumWithCount(pEnum, cMax, rCustomAttributes, pcCustomAttributes);
ErrExit:
HENUMInternal::DestroyEnumIfEmpty(ppmdEnum);
STOP_MD_PERF(EnumCustomAttributes);
END_ENTRYPOINT_NOTHROW;
return hr;
} // STDMETHODIMP RegMeta::EnumCustomAttributes()
//*****************************************************************************
// Get information about a CustomAttribute.
//*****************************************************************************
STDMETHODIMP RegMeta::GetCustomAttributeProps(
mdCustomAttribute cv, // The attribute token
mdToken *ptkObj, // [OUT, OPTIONAL] Put object token here.
mdToken *ptkType, // [OUT, OPTIONAL] Put TypeDef/TypeRef token here.
void const **ppBlob, // [OUT, OPTIONAL] Put pointer to data here.
ULONG *pcbSize) // [OUT, OPTIONAL] Put size of data here.
{
HRESULT hr = S_OK; // A result.
BEGIN_ENTRYPOINT_NOTHROW;
CMiniMdRW *pMiniMd;
START_MD_PERF();
LOCKREAD();
_ASSERTE(TypeFromToken(cv) == mdtCustomAttribute);
pMiniMd = &(m_pStgdb->m_MiniMd);
CustomAttributeRec *pCustomAttributeRec; // The custom value record.
IfFailGo(pMiniMd->GetCustomAttributeRecord(RidFromToken(cv), &pCustomAttributeRec));
if (ptkObj)
*ptkObj = pMiniMd->getParentOfCustomAttribute(pCustomAttributeRec);
if (ptkType)
*ptkType = pMiniMd->getTypeOfCustomAttribute(pCustomAttributeRec);
if (ppBlob != NULL)
{
IfFailGo(pMiniMd->getValueOfCustomAttribute(pCustomAttributeRec, (const BYTE **)ppBlob, pcbSize));
}
ErrExit:
STOP_MD_PERF(GetCustomAttributeProps);
END_ENTRYPOINT_NOTHROW;
return hr;
} // RegMeta::GetCustomAttributeProps
|
