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/*
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "third_party/blink/renderer/modules/indexeddb/idb_key_path.h"
#include "third_party/blink/public/common/indexeddb/web_idb_types.h"
#include "third_party/blink/renderer/platform/wtf/ascii_ctype.h"
#include "third_party/blink/renderer/platform/wtf/assertions.h"
#include "third_party/blink/renderer/platform/wtf/dtoa.h"
#include "third_party/blink/renderer/platform/wtf/text/character_names.h"
#include "third_party/blink/renderer/platform/wtf/text/unicode.h"
namespace blink {
namespace {
// The following correspond to grammar in ECMA-262.
const uint32_t kUnicodeLetter =
WTF::Unicode::kLetter_Uppercase | WTF::Unicode::kLetter_Lowercase |
WTF::Unicode::kLetter_Titlecase | WTF::Unicode::kLetter_Modifier |
WTF::Unicode::kLetter_Other | WTF::Unicode::kNumber_Letter;
const uint32_t kUnicodeCombiningMark =
WTF::Unicode::kMark_NonSpacing | WTF::Unicode::kMark_SpacingCombining;
const uint32_t kUnicodeDigit = WTF::Unicode::kNumber_DecimalDigit;
const uint32_t kUnicodeConnectorPunctuation =
WTF::Unicode::kPunctuation_Connector;
static inline bool IsIdentifierStartCharacter(UChar c) {
return (WTF::Unicode::Category(c) & kUnicodeLetter) || (c == '$') ||
(c == '_');
}
static inline bool IsIdentifierCharacter(UChar c) {
return (WTF::Unicode::Category(c) &
(kUnicodeLetter | kUnicodeCombiningMark | kUnicodeDigit |
kUnicodeConnectorPunctuation)) ||
(c == '$') || (c == '_') || (c == kZeroWidthNonJoinerCharacter) ||
(c == kZeroWidthJoinerCharacter);
}
bool IsIdentifier(const String& s) {
size_t length = s.length();
if (!length)
return false;
if (!IsIdentifierStartCharacter(s[0]))
return false;
for (size_t i = 1; i < length; ++i) {
if (!IsIdentifierCharacter(s[i]))
return false;
}
return true;
}
} // namespace
bool IDBIsValidKeyPath(const String& key_path) {
IDBKeyPathParseError error;
Vector<String> key_path_elements;
IDBParseKeyPath(key_path, key_path_elements, error);
return error == kIDBKeyPathParseErrorNone;
}
void IDBParseKeyPath(const String& key_path,
Vector<String>& elements,
IDBKeyPathParseError& error) {
// IDBKeyPath ::= EMPTY_STRING | identifier ('.' identifier)*
if (key_path.IsEmpty()) {
error = kIDBKeyPathParseErrorNone;
return;
}
key_path.Split('.', /*allow_empty_entries=*/true, elements);
for (size_t i = 0; i < elements.size(); ++i) {
if (!IsIdentifier(elements[i])) {
error = kIDBKeyPathParseErrorIdentifier;
return;
}
}
error = kIDBKeyPathParseErrorNone;
}
IDBKeyPath::IDBKeyPath(const class String& string)
: type_(kStringType), string_(string) {
DCHECK(!string_.IsNull());
}
IDBKeyPath::IDBKeyPath(const Vector<class String>& array)
: type_(kArrayType), array_(array) {
#if DCHECK_IS_ON()
for (size_t i = 0; i < array_.size(); ++i)
DCHECK(!array_[i].IsNull());
#endif
}
IDBKeyPath::IDBKeyPath(const StringOrStringSequence& key_path) {
if (key_path.IsNull()) {
type_ = kNullType;
} else if (key_path.IsString()) {
type_ = kStringType;
string_ = key_path.GetAsString();
DCHECK(!string_.IsNull());
} else {
DCHECK(key_path.IsStringSequence());
type_ = kArrayType;
array_ = key_path.GetAsStringSequence();
#if DCHECK_IS_ON()
for (size_t i = 0; i < array_.size(); ++i)
DCHECK(!array_[i].IsNull());
#endif
}
}
IDBKeyPath::IDBKeyPath(const WebIDBKeyPath& key_path) {
switch (key_path.KeyPathType()) {
case kWebIDBKeyPathTypeNull:
type_ = kNullType;
return;
case kWebIDBKeyPathTypeString:
type_ = kStringType;
string_ = key_path.String();
return;
case kWebIDBKeyPathTypeArray:
type_ = kArrayType;
for (size_t i = 0, size = key_path.Array().size(); i < size; ++i)
array_.push_back(key_path.Array()[i]);
return;
}
NOTREACHED();
}
IDBKeyPath::operator WebIDBKeyPath() const {
switch (type_) {
case kNullType:
return WebIDBKeyPath();
case kStringType:
return WebIDBKeyPath(WebString(string_));
case kArrayType:
return WebIDBKeyPath(array_);
}
NOTREACHED();
return WebIDBKeyPath();
}
bool IDBKeyPath::IsValid() const {
switch (type_) {
case kNullType:
return false;
case kStringType:
return IDBIsValidKeyPath(string_);
case kArrayType:
if (array_.IsEmpty())
return false;
for (size_t i = 0; i < array_.size(); ++i) {
if (!IDBIsValidKeyPath(array_[i]))
return false;
}
return true;
}
NOTREACHED();
return false;
}
bool IDBKeyPath::operator==(const IDBKeyPath& other) const {
if (type_ != other.type_)
return false;
switch (type_) {
case kNullType:
return true;
case kStringType:
return string_ == other.string_;
case kArrayType:
return array_ == other.array_;
}
NOTREACHED();
return false;
}
STATIC_ASSERT_ENUM(kWebIDBKeyPathTypeNull, IDBKeyPath::kNullType);
STATIC_ASSERT_ENUM(kWebIDBKeyPathTypeString, IDBKeyPath::kStringType);
STATIC_ASSERT_ENUM(kWebIDBKeyPathTypeArray, IDBKeyPath::kArrayType);
} // namespace blink
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