#include <algorithm>
#include <memory>
#include <optional>
#include <system_error>
#include <utility>
#include <vector>
#include "clang/AST/DeclCXX.h"
#include "clang/AST/OperationKinds.h"
#include "clang/AST/StmtVisitor.h"
#include "clang/Analysis/Analyses/PostOrderCFGView.h"
#include "clang/Analysis/CFG.h"
#include "clang/Analysis/FlowSensitive/DataflowEnvironment.h"
#include "clang/Analysis/FlowSensitive/DataflowLattice.h"
#include "clang/Analysis/FlowSensitive/DataflowWorklist.h"
#include "clang/Analysis/FlowSensitive/Transfer.h"
#include "clang/Analysis/FlowSensitive/TypeErasedDataflowAnalysis.h"
#include "clang/Analysis/FlowSensitive/Value.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Error.h"

Namespaces
namespace	clang

namespace	clang::dataflow
	Dataflow Directional Tag Classes.

Macros
#define	DEBUG_TYPE "clang-dataflow"

Functions
static int	clang::dataflow::blockIndexInPredecessor (const CFGBlock &Pred, const CFGBlock &Block)
	Returns the index of `Block` in the successors of `Pred`.

static bool	clang::dataflow::isLoopHead (const CFGBlock &B)

static TypeErasedDataflowAnalysisState	clang::dataflow::computeBlockInputState (const CFGBlock &Block, AnalysisContext &AC)
	Computes the input state for a given basic block by joining the output states of its predecessors.

static void	clang::dataflow::builtinTransferStatement (const CFGStmt &Elt, TypeErasedDataflowAnalysisState &InputState, AnalysisContext &AC)
	Built-in transfer function for `CFGStmt`.

static void	clang::dataflow::builtinTransferInitializer (const CFGInitializer &Elt, TypeErasedDataflowAnalysisState &InputState)
	Built-in transfer function for `CFGInitializer`.

static void	clang::dataflow::builtinTransfer (const CFGElement &Elt, TypeErasedDataflowAnalysisState &State, AnalysisContext &AC)

static TypeErasedDataflowAnalysisState	clang::dataflow::transferCFGBlock (const CFGBlock &Block, AnalysisContext &AC, std::function< void(const CFGElement &, const TypeErasedDataflowAnalysisState &)> PostVisitCFG=nullptr)
	Transfers `State` by evaluating each element in the `Block` based on the `AC.Analysis` specified.

TypeErasedDataflowAnalysisState	clang::dataflow::transferBlock (const ControlFlowContext &CFCtx, llvm::ArrayRef< std::optional< TypeErasedDataflowAnalysisState > > BlockStates, const CFGBlock &Block, const Environment &InitEnv, TypeErasedDataflowAnalysis &Analysis, std::function< void(const CFGElement &, const TypeErasedDataflowAnalysisState &)> PostVisitCFG=nullptr)
	Transfers the state of a basic block by evaluating each of its elements in the context of `Analysis` and the states of its predecessors that are available in `BlockStates`.

llvm::Expected< std::vector< std::optional< TypeErasedDataflowAnalysisState > > >	clang::dataflow::runTypeErasedDataflowAnalysis (const ControlFlowContext &CFCtx, TypeErasedDataflowAnalysis &Analysis, const Environment &InitEnv, std::function< void(const CFGElement &, const TypeErasedDataflowAnalysisState &)> PostVisitCFG=nullptr)
	Performs dataflow analysis and returns a mapping from basic block IDs to dataflow analysis states that model the respective basic blocks.