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//===--- PrettyPrinter.h - Classes for aiding with AST printing -*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the PrinterHelper interface.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_AST_PRETTY_PRINTER_H
#define LLVM_CLANG_AST_PRETTY_PRINTER_H
namespace llvm {
class raw_ostream;
}
namespace clang {
class Stmt;
class TagDecl;
class PrinterHelper {
public:
virtual ~PrinterHelper();
virtual bool handledStmt(Stmt* E, llvm::raw_ostream& OS) = 0;
};
/// \brief Describes how types, statements, expressions, and
/// declarations should be printed.
struct PrintingPolicy {
/// \brief Create a default printing policy for C.
PrintingPolicy()
: Indentation(2), CPlusPlus(false), SuppressSpecifiers(false),
SuppressTag(false), SuppressTagKind(false), Dump(false) { }
/// \brief The number of spaces to use to indent each line.
unsigned Indentation : 8;
/// \brief Whether we're printing C++ code (otherwise, we're
/// printing C code).
bool CPlusPlus : 1;
/// \brief Whether we should suppress printing of the actual specifiers for
/// the given type or declaration.
///
/// This flag is only used when we are printing declarators beyond
/// the first declarator within a declaration group. For example, given:
///
/// \code
/// const int *x, *y;
/// \endcode
///
/// SuppressSpecifiers will be false when printing the
/// declaration for "x", so that we will print "int *x"; it will be
/// \c true when we print "y", so that we suppress printing the
/// "const int" type specifier and instead only print the "*y".
bool SuppressSpecifiers : 1;
/// \brief Whether type printing should skip printing the actual tag type.
///
/// This is used when the caller needs to print a tag definition in front
/// of the type, as in constructs like the following:
///
/// \code
/// typedef struct { int x, y; } Point;
/// \endcode
bool SuppressTag : 1;
/// \brief If we are printing a tag type, suppresses printing of the
/// kind of tag, e.g., "struct", "union", "enum".
bool SuppressTagKind : 1;
/// \brief True when we are "dumping" rather than "pretty-printing",
/// where dumping involves printing the internal details of the AST
/// and pretty-printing involves printing something similar to
/// source code.
bool Dump : 1;
};
} // end namespace clang
#endif
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