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e4a1cd2df1
We don't need to copy `dirAndSrcs` when appending it to `outTokens`, and we can reasonably retain the storage we've built up in `dirSrcs`, so we don't continually reallocate it.
69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "PolicyTokenizer.h"
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static LogModule* GetPolicyTokenizerLog() {
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static LazyLogModule gPolicyTokenizerPRLog("PolicyTokenizer");
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return gPolicyTokenizerPRLog;
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}
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#define POLICYTOKENIZERLOG(args) \
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MOZ_LOG(GetPolicyTokenizerLog(), mozilla::LogLevel::Debug, args)
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static const char16_t SEMICOL = ';';
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PolicyTokenizer::PolicyTokenizer(const char16_t* aStart, const char16_t* aEnd)
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: mCurChar(aStart), mEndChar(aEnd) {
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POLICYTOKENIZERLOG(("PolicyTokenizer::PolicyTokenizer"));
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}
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PolicyTokenizer::~PolicyTokenizer() {
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POLICYTOKENIZERLOG(("PolicyTokenizer::~PolicyTokenizer"));
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}
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void PolicyTokenizer::generateNextToken() {
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skipWhiteSpaceAndSemicolon();
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MOZ_ASSERT(mCurToken.Length() == 0);
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const char16_t* const start = mCurChar;
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while (!atEnd() && !nsContentUtils::IsHTMLWhitespace(*mCurChar) &&
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*mCurChar != SEMICOL) {
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mCurChar++;
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}
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if (start != mCurChar) {
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mCurToken.Append(start, mCurChar - start);
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}
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POLICYTOKENIZERLOG(("PolicyTokenizer::generateNextToken: %s",
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NS_ConvertUTF16toUTF8(mCurToken).get()));
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}
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void PolicyTokenizer::generateTokens(policyTokens& outTokens) {
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POLICYTOKENIZERLOG(("PolicyTokenizer::generateTokens"));
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// dirAndSrcs holds one set of [ name, src, src, src, ... ]
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nsTArray<nsString> dirAndSrcs;
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while (!atEnd()) {
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generateNextToken();
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dirAndSrcs.AppendElement(mCurToken);
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skipWhiteSpace();
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if (atEnd() || accept(SEMICOL)) {
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outTokens.AppendElement(std::move(dirAndSrcs));
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dirAndSrcs.ClearAndRetainStorage();
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}
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}
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}
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void PolicyTokenizer::tokenizePolicy(const nsAString& aPolicyString,
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policyTokens& outTokens) {
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POLICYTOKENIZERLOG(("PolicyTokenizer::tokenizePolicy"));
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PolicyTokenizer tokenizer(aPolicyString.BeginReading(),
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aPolicyString.EndReading());
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tokenizer.generateTokens(outTokens);
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}
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