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// Copyright 2017 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_PARSING_PREPARSED_SCOPE_DATA_H_
#define V8_PARSING_PREPARSED_SCOPE_DATA_H_
#include <vector>
#include "src/globals.h"
namespace v8 {
namespace internal {
class PreParsedScopeData {
public:
PreParsedScopeData() {}
~PreParsedScopeData() {}
// Whether the scope has variables whose context allocation or
// maybeassignedness we need to decide based on preparsed scope data.
static bool HasVariablesWhichNeedAllocationData(Scope* scope);
class ScopeScope {
public:
ScopeScope(PreParsedScopeData* data, ScopeType scope_type,
int start_position, int end_position);
~ScopeScope();
void MaybeAddVariable(Variable* var);
private:
PreParsedScopeData* data_;
size_t index_in_data_;
ScopeScope* previous_scope_;
int inner_scope_count_ = 0;
int variable_count_ = 0;
bool got_data_ = false;
DISALLOW_COPY_AND_ASSIGN(ScopeScope);
};
private:
friend class ScopeTestHelper;
// TODO(marja): Make the backing store more efficient once we know exactly
// what data is needed.
std::vector<int> backing_store_;
ScopeScope* current_scope_ = nullptr;
DISALLOW_COPY_AND_ASSIGN(PreParsedScopeData);
};
} // namespace internal
} // namespace v8
#endif // V8_PARSING_PREPARSED_SCOPE_DATA_H_
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