chromium/third_party/blink/renderer/core/xml/xpath_parser.cc

/*
 * Copyright 2005 Maksim Orlovich <[email protected]>
 * Copyright (C) 2006 Apple Computer, Inc.
 * Copyright (C) 2007 Alexey Proskuryakov <[email protected]>
 *
 * 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 THE AUTHOR ``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 THE AUTHOR 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/core/xml/xpath_parser.h"

#include "base/memory/ptr_util.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_xpath_ns_resolver.h"
#include "third_party/blink/renderer/core/frame/web_feature.h"
#include "third_party/blink/renderer/core/xml/xpath_evaluator.h"
#include "third_party/blink/renderer/core/xml/xpath_grammar_generated.h"
#include "third_party/blink/renderer/core/xml/xpath_path.h"
#include "third_party/blink/renderer/core/xml/xpath_util.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/instrumentation/use_counter.h"
#include "third_party/blink/renderer/platform/wtf/std_lib_extras.h"
#include "third_party/blink/renderer/platform/wtf/text/string_hash.h"
#include "third_party/blink/renderer/platform/wtf/text/unicode.h"

namespace blink {
namespace xpath {

YyParser;
TokenType;

Parser* Parser::current_parser_ = …;

enum XMLCat { … };

AxisNamesMap;

static XMLCat CharCat(UChar a_char) { … }

static void SetUpAxisNamesMap(AxisNamesMap& axis_names) { … }

static bool IsAxisName(const String& name, Step::Axis& type) { … }

static bool IsNodeTypeName(const String& name) { … }

// Returns whether the current token can possibly be a binary operator, given
// the previous token. Necessary to disambiguate some of the operators
// (* (multiply), div, and, or, mod) in the [32] Operator rule
// (check http://www.w3.org/TR/xpath#exprlex).
bool Parser::IsBinaryOperatorContext() const { … }

// See https://www.w3.org/TR/1999/REC-xpath-19991116/#NT-ExprWhitespace .
void Parser::SkipWS() { … }

Token Parser::MakeTokenAndAdvance(int code, int advance) { … }

Token Parser::MakeTokenAndAdvance(int code,
                                  NumericOp::Opcode val,
                                  int advance) { … }

Token Parser::MakeTokenAndAdvance(int code, EqTestOp::Opcode val, int advance) { … }

// Returns next char if it's there and interesting, 0 otherwise
char Parser::PeekAheadHelper() { … }

char Parser::PeekCurHelper() { … }

Token Parser::LexString() { … }

Token Parser::LexNumber() { … }

bool Parser::LexNCName(String& name) { … }

bool Parser::LexQName(String& name) { … }

Token Parser::NextTokenInternal() { … }

Token Parser::NextToken() { … }

Parser::Parser(UseCounter* use_counter) : … { … }

Parser::~Parser() = default;

void Parser::Reset(const String& data) { … }

int Parser::Lex(void* data) { … }

bool Parser::ExpandQName(const String& q_name,
                         AtomicString& local_name,
                         AtomicString& namespace_uri) { … }

Expression* Parser::ParseStatement(const String& statement,
                                   V8XPathNSResolver* resolver,
                                   ExceptionState& exception_state) { … }

}  // namespace xpath
}  // namespace blink