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cce3bd162f
Add a way to override the JS calling location temporarily, and use it to propagate it to the image load task. Differential Revision: https://phabricator.services.mozilla.com/D218416
69 lines
2.0 KiB
C++
69 lines
2.0 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 "mozilla/SourceLocation.h"
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#include "mozilla/ThreadLocal.h"
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#include "nsContentUtils.h"
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#include "jsapi.h"
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namespace mozilla {
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SourceLocation::SourceLocation() = default;
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SourceLocation::~SourceLocation() = default;
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SourceLocation::SourceLocation(nsCString&& aResource, uint32_t aLine,
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uint32_t aCol)
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: mResource(std::move(aResource)), mLine(aLine), mColumn(aCol) {}
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SourceLocation::SourceLocation(nsCOMPtr<nsIURI>&& aResource, uint32_t aLine,
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uint32_t aCol)
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: mResource(std::move(aResource)), mLine(aLine), mColumn(aCol) {}
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static MOZ_THREAD_LOCAL(const JSCallingLocation*) tlsFallback;
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const JSCallingLocation* JSCallingLocation::GetFallback() {
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if (!tlsFallback.initialized()) {
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return nullptr;
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}
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return tlsFallback.get();
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}
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void JSCallingLocation::SetFallback(const JSCallingLocation* aFallback) {
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if (!tlsFallback.init()) {
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return;
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}
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tlsFallback.set(aFallback);
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}
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JSCallingLocation JSCallingLocation::Get() {
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return Get(nsContentUtils::GetCurrentJSContext());
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}
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JSCallingLocation JSCallingLocation::Get(JSContext* aCx) {
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JSCallingLocation result;
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if (const JSCallingLocation* loc = GetFallback()) {
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result = *loc;
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}
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if (!aCx) {
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return result;
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}
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JS::AutoFilename filename;
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uint32_t line;
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JS::ColumnNumberOneOrigin column;
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if (!JS::DescribeScriptedCaller(aCx, &filename, &line, &column)) {
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return result;
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}
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nsCString file;
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if (!file.Assign(filename.get(), fallible)) {
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return result;
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}
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result.mResource = AsVariant(std::move(file));
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result.mLine = line;
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result.mColumn = column.oneOriginValue();
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return result;
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}
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} // namespace mozilla
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