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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/renderer/bindings/core/v8/to_v8_traits.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_union_string_stringsequence.h"
#include "third_party/blink/renderer/platform/bindings/script_state.h"
#include "third_party/blink/renderer/platform/bindings/v8_binding.h"
#include "third_party/blink/renderer/platform/wtf/dtoa.h"
#include "third_party/blink/renderer/platform/wtf/text/ascii_ctype.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) {
wtf_size_t length = s.length();
if (!length)
return false;
if (!IsIdentifierStartCharacter(s[0]))
return false;
for (wtf_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.empty()) {
error = kIDBKeyPathParseErrorNone;
return;
}
key_path.Split('.', /*allow_empty_entries=*/true, elements);
for (const auto& element : elements) {
if (!IsIdentifier(element)) {
error = kIDBKeyPathParseErrorIdentifier;
return;
}
}
error = kIDBKeyPathParseErrorNone;
}
IDBKeyPath::IDBKeyPath(const class String& string)
: type_(mojom::IDBKeyPathType::String), string_(string) {
DCHECK(!string_.IsNull());
}
IDBKeyPath::IDBKeyPath(const Vector<class String>& array)
: type_(mojom::IDBKeyPathType::Array), array_(array) {
#if DCHECK_IS_ON()
for (const auto& element : array_)
DCHECK(!element.IsNull());
#endif
}
IDBKeyPath::IDBKeyPath(const V8UnionStringOrStringSequence* key_path) {
if (!key_path) {
type_ = mojom::IDBKeyPathType::Null;
return;
}
switch (key_path->GetContentType()) {
case V8UnionStringOrStringSequence::ContentType::kString:
type_ = mojom::IDBKeyPathType::String;
string_ = key_path->GetAsString();
DCHECK(!string_.IsNull());
break;
case V8UnionStringOrStringSequence::ContentType::kStringSequence:
type_ = mojom::IDBKeyPathType::Array;
array_ = key_path->GetAsStringSequence();
#if DCHECK_IS_ON()
for (const auto& element : array_)
DCHECK(!element.IsNull());
#endif
break;
}
}
bool IDBKeyPath::IsValid() const {
switch (type_) {
case mojom::IDBKeyPathType::Null:
return false;
case mojom::IDBKeyPathType::String:
return IDBIsValidKeyPath(string_);
case mojom::IDBKeyPathType::Array:
if (array_.empty())
return false;
for (const auto& element : array_) {
if (!IDBIsValidKeyPath(element))
return false;
}
return true;
}
NOTREACHED();
}
v8::Local<v8::Value> IDBKeyPath::ToV8(ScriptState* script_state) const {
v8::Isolate* isolate = script_state->GetIsolate();
switch (type_) {
case mojom::IDBKeyPathType::Null:
return v8::Null(isolate);
case mojom::IDBKeyPathType::String:
return V8String(isolate, GetString());
case mojom::IDBKeyPathType::Array:
return ToV8Traits<IDLSequence<IDLString>>::ToV8(script_state, Array());
}
NOTREACHED();
}
bool IDBKeyPath::operator==(const IDBKeyPath& other) const {
if (type_ != other.type_)
return false;
switch (type_) {
case mojom::IDBKeyPathType::Null:
return true;
case mojom::IDBKeyPathType::String:
return string_ == other.string_;
case mojom::IDBKeyPathType::Array:
return array_ == other.array_;
}
NOTREACHED();
}
} // namespace blink
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