Backed out 2 changesets (bug 1881078, bug 1879806) for causing dt failures @ devtools...
[gecko.git] / storage / mozStorageStatementRow.cpp
blob7d203d7513aa2dfa159ca086e699319613915d5c
1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2 * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
3 * This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
7 #include "nsString.h"
9 #include "mozilla/ErrorResult.h"
10 #include "mozilla/dom/MozStorageStatementRowBinding.h"
11 #include "mozStorageStatementRow.h"
12 #include "mozStorageStatement.h"
14 #include "jsapi.h"
15 #include "js/Array.h" // JS::NewArrayObject
16 #include "js/PropertyAndElement.h" // JS_DefineElement
17 #include "js/Value.h"
19 #include "xpc_make_class.h"
21 namespace mozilla {
22 namespace storage {
24 ////////////////////////////////////////////////////////////////////////////////
25 //// StatementRow
27 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(StatementRow, mWindow)
29 NS_INTERFACE_TABLE_HEAD(StatementRow)
30 NS_WRAPPERCACHE_INTERFACE_TABLE_ENTRY
31 NS_INTERFACE_TABLE(StatementRow, nsISupports)
32 NS_INTERFACE_TABLE_TO_MAP_SEGUE_CYCLE_COLLECTION(StatementRow)
33 NS_INTERFACE_MAP_END
35 NS_IMPL_CYCLE_COLLECTING_ADDREF(StatementRow)
36 NS_IMPL_CYCLE_COLLECTING_RELEASE(StatementRow)
38 StatementRow::StatementRow(nsPIDOMWindowInner* aWindow, Statement* aStatement)
39 : mWindow(aWindow), mStatement(aStatement) {}
41 JSObject* StatementRow::WrapObject(JSContext* aCx,
42 JS::Handle<JSObject*> aGivenProto) {
43 return dom::MozStorageStatementRow_Binding::Wrap(aCx, this, aGivenProto);
46 void StatementRow::NamedGetter(JSContext* aCx, const nsAString& aName,
47 bool& aFound,
48 JS::MutableHandle<JS::Value> aResult,
49 mozilla::ErrorResult& aRv) {
50 if (!mStatement) {
51 aRv.Throw(NS_ERROR_NOT_INITIALIZED);
52 return;
55 nsCString name = NS_ConvertUTF16toUTF8(aName);
57 uint32_t idx;
59 nsresult rv = mStatement->GetColumnIndex(name, &idx);
60 if (NS_FAILED(rv)) {
61 // It's highly likely that the name doesn't exist, so let the JS engine
62 // check the prototype chain and throw if that doesn't have the property
63 // either.
64 aFound = false;
65 return;
69 int32_t type;
70 aRv = mStatement->GetTypeOfIndex(idx, &type);
71 if (aRv.Failed()) {
72 return;
75 switch (type) {
76 case mozIStorageValueArray::VALUE_TYPE_INTEGER:
77 case mozIStorageValueArray::VALUE_TYPE_FLOAT: {
78 double dval;
79 aRv = mStatement->GetDouble(idx, &dval);
80 if (aRv.Failed()) {
81 return;
83 aResult.set(::JS_NumberValue(dval));
84 break;
86 case mozIStorageValueArray::VALUE_TYPE_TEXT: {
87 uint32_t bytes;
88 const char16_t* sval = reinterpret_cast<const char16_t*>(
89 static_cast<mozIStorageStatement*>(mStatement)
90 ->AsSharedWString(idx, &bytes));
91 JSString* str =
92 ::JS_NewUCStringCopyN(aCx, sval, bytes / sizeof(char16_t));
93 if (!str) {
94 aRv.Throw(NS_ERROR_UNEXPECTED);
95 return;
97 aResult.setString(str);
98 break;
100 case mozIStorageValueArray::VALUE_TYPE_BLOB: {
101 uint32_t length;
102 const uint8_t* blob = static_cast<mozIStorageStatement*>(mStatement)
103 ->AsSharedBlob(idx, &length);
104 JS::Rooted<JSObject*> obj(aCx, JS::NewArrayObject(aCx, length));
105 if (!obj) {
106 aRv.Throw(NS_ERROR_UNEXPECTED);
107 return;
109 aResult.setObject(*obj);
111 // Copy the blob over to the JS array.
112 for (uint32_t i = 0; i < length; i++) {
113 if (!::JS_DefineElement(aCx, obj, i, blob[i], JSPROP_ENUMERATE)) {
114 aRv.Throw(NS_ERROR_UNEXPECTED);
115 return;
118 break;
120 case mozIStorageValueArray::VALUE_TYPE_NULL:
121 aResult.setNull();
122 break;
123 default:
124 NS_ERROR("unknown column type returned, what's going on?");
125 break;
127 aFound = true;
130 void StatementRow::GetSupportedNames(nsTArray<nsString>& aNames) {
131 if (!mStatement) {
132 return;
135 uint32_t columnCount;
136 nsresult rv = mStatement->GetColumnCount(&columnCount);
137 if (NS_WARN_IF(NS_FAILED(rv))) {
138 return;
141 for (uint32_t i = 0; i < columnCount; i++) {
142 nsAutoCString name;
143 nsresult rv = mStatement->GetColumnName(i, name);
144 if (NS_WARN_IF(NS_FAILED(rv))) {
145 return;
147 aNames.AppendElement(NS_ConvertUTF8toUTF16(name));
151 } // namespace storage
152 } // namespace mozilla