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93 lines (77 loc) · 3.89 KB
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/*
* Copyright (C) 2008, 2013 Apple 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.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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.
*/
#pragma once
#include <JavaScriptCore/UnlinkedSourceCode.h>
namespace JSC {
class SourceCode : public UnlinkedSourceCode {
friend class CachedSourceCode;
friend class CachedSourceCodeWithoutProvider;
public:
SourceCode()
: UnlinkedSourceCode()
{
}
SourceCode(Ref<SourceProvider>&& provider)
: UnlinkedSourceCode(WTF::move(provider))
{
}
SourceCode(RefPtr<SourceProvider>&& provider, int startOffset, int endOffset)
: UnlinkedSourceCode(WTF::move(provider), startOffset, endOffset)
{
}
// Prefer derivedStartPosition() when both are wanted: each of these derives the whole pair.
OrdinalNumber firstLine() const { return derivedStartPosition().first; }
OrdinalNumber startColumn() const { return derivedStartPosition().second; }
// Builds the provider's line-start table, so this belongs on a reporting path, not a parse path.
std::pair<OrdinalNumber, OrdinalNumber> derivedStartPosition() const
{
SUPPRESS_UNCOUNTED_ARG // m_provider is the owning ref
auto lineColumn = m_provider->documentLineColumnForOffset(startOffset());
return { OrdinalNumber::fromOneBasedInt(lineColumn.line), OrdinalNumber::fromOneBasedInt(lineColumn.column) };
}
SourceID providerID() const
{
if (!m_provider)
return SourceProvider::nullID;
return m_provider->asID();
}
SourceProvider* provider() const { return m_provider.get(); }
SourceCode subExpression(unsigned openBrace, unsigned closeBrace) const;
friend bool operator==(const SourceCode&, const SourceCode&) = default;
};
inline SourceCode makeSource(const String& source, const SourceOrigin& sourceOrigin, SourceTaintedness sourceTaintedOrigin, String filename = String(), const TextPosition& startPosition = TextPosition(), SourceProviderSourceType sourceType = SourceProviderSourceType::Program)
{
// The provider is the only place an inline <script>'s start is recorded; SourceCode reads it
// back from there so the two cannot disagree.
return SourceCode(StringSourceProvider::create(source, sourceOrigin, WTF::move(filename), sourceTaintedOrigin, startPosition, sourceType));
}
inline SourceCode SourceCode::subExpression(unsigned openBrace, unsigned closeBrace) const
{
return SourceCode(RefPtr<SourceProvider> { provider() }, openBrace, closeBrace + 1);
}
} // namespace JSC