blob: 42f69e8b20878b9119554f0e405ad505eb147782 [file] [log] [blame]
// Copyright 2018 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.
#include <unordered_set>
#include "src/ast/ast-traversal-visitor.h"
namespace v8 {
namespace internal {
class SourceRangeMap;
// Post-processes generated source ranges while the AST structure still exists.
// In particular, SourceRangeAstVisitor
// 1. deduplicates continuation source ranges, only keeping the outermost one.
// See also:
// 2. removes the source range associated with the final statement in a block
// or function body if the parent itself has a source range associated with it.
// See also:
class SourceRangeAstVisitor final
: public AstTraversalVisitor<SourceRangeAstVisitor> {
SourceRangeAstVisitor(uintptr_t stack_limit, Expression* root,
SourceRangeMap* source_range_map);
friend class AstTraversalVisitor<SourceRangeAstVisitor>;
void VisitBlock(Block* stmt);
void VisitSwitchStatement(SwitchStatement* stmt);
void VisitFunctionLiteral(FunctionLiteral* expr);
bool VisitNode(AstNode* node);
void VisitTryCatchStatement(TryCatchStatement* stmt);
void VisitTryFinallyStatement(TryFinallyStatement* stmt);
void MaybeRemoveContinuationRange(Statement* last_statement);
void MaybeRemoveLastContinuationRange(ZonePtrList<Statement>* stmts);
void MaybeRemoveContinuationRangeOfAsyncReturn(TryCatchStatement* stmt);
SourceRangeMap* source_range_map_ = nullptr;
std::unordered_set<int> continuation_positions_;
} // namespace internal
} // namespace v8