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//===--------------------- TildeExpressionResolver.h ------------*- C++ -*-===//
// The LLVM Compiler Infrastructure
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/StringSet.h"
namespace llvm {
template <typename T> class SmallVectorImpl;
namespace lldb_private {
class TildeExpressionResolver {
virtual ~TildeExpressionResolver();
/// Resolve a Tilde Expression contained according to bash rules.
/// \param Expr Contains the tilde expression to resolve. A valid tilde
/// expression must begin with a tilde and contain only non
/// separator characters.
/// \param Output Contains the resolved tilde expression, or the original
/// input if the tilde expression could not be resolved.
/// \returns true if \p Expr was successfully resolved, false otherwise.
virtual bool ResolveExact(llvm::StringRef Expr,
llvm::SmallVectorImpl<char> &Output) = 0;
/// Auto-complete a tilde expression with all matching values.
/// \param Expr Contains the tilde expression prefix to resolve. See
/// ResolveExact() for validity rules.
/// \param Output Contains all matching home directories, each one
/// itself unresolved (i.e. you need to call ResolveExact
/// on each item to turn it into a real path).
/// \returns true if there were any matches, false otherwise.
virtual bool ResolvePartial(llvm::StringRef Expr,
llvm::StringSet<> &Output) = 0;
/// Resolve an entire path that begins with a tilde expression, replacing
/// the username portion with the matched result.
bool ResolveFullPath(llvm::StringRef Expr,
llvm::SmallVectorImpl<char> &Output);
class StandardTildeExpressionResolver : public TildeExpressionResolver {
bool ResolveExact(llvm::StringRef Expr,
llvm::SmallVectorImpl<char> &Output) override;
bool ResolvePartial(llvm::StringRef Expr, llvm::StringSet<> &Output) override;