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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_SourceLocation_h
#define mozilla_SourceLocation_h
#include "mozilla/Variant.h"
#include "nsCOMPtr.h"
#include "nsString.h"
struct JSContext;
class nsIURI;
namespace mozilla {
struct SourceLocation {
mozilla::Variant<nsCString, nsCOMPtr<nsIURI>> mResource{VoidCString()};
uint32_t mLine = 0;
uint32_t mColumn = 1;
SourceLocation();
explicit SourceLocation(nsCString&&, uint32_t aLine = 0, uint32_t aCol = 1);
explicit SourceLocation(nsCOMPtr<nsIURI>&&, uint32_t aLine = 0,
uint32_t aCol = 1);
~SourceLocation();
bool IsEmpty() const {
return mResource.is<nsCString>() ? mResource.as<nsCString>().IsEmpty()
: !mResource.as<nsCOMPtr<nsIURI>>();
}
explicit operator bool() const { return !IsEmpty(); }
};
struct JSCallingLocation : SourceLocation {
const nsCString& FileName() const { return mResource.as<nsCString>(); }
static JSCallingLocation Get();
static JSCallingLocation Get(JSContext*);
class MOZ_STACK_CLASS AutoFallback {
public:
explicit AutoFallback(const JSCallingLocation* aFallback)
: mOldFallback(GetFallback()) {
SetFallback(aFallback);
}
~AutoFallback() { SetFallback(mOldFallback); }
private:
const JSCallingLocation* mOldFallback;
};
private:
static const JSCallingLocation* GetFallback();
static void SetFallback(const JSCallingLocation*);
};
} // namespace mozilla
#endif
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