1 //===- FormatAdapters.h - Formatters for common LLVM types -----*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #ifndef LLVM_SUPPORT_FORMATCOMMON_H
11 #define LLVM_SUPPORT_FORMATCOMMON_H
13 #include "llvm/ADT/SmallString.h"
14 #include "llvm/Support/FormatVariadicDetails.h"
15 #include "llvm/Support/raw_ostream.h"
18 enum class AlignStyle { Left, Center, Right };
21 detail::format_adapter &Adapter;
26 FmtAlign(detail::format_adapter &Adapter, AlignStyle Where, size_t Amount,
28 : Adapter(Adapter), Where(Where), Amount(Amount), Fill(Fill) {}
30 void format(raw_ostream &S, StringRef Options) {
31 // If we don't need to align, we can format straight into the underlying
32 // stream. Otherwise we have to go through an intermediate stream first
33 // in order to calculate how long the output is so we can align it.
34 // TODO: Make the format method return the number of bytes written, that
35 // way we can also skip the intermediate stream for left-aligned output.
37 Adapter.format(S, Options);
41 raw_svector_ostream Stream(Item);
43 Adapter.format(Stream, Options);
44 if (Amount <= Item.size()) {
49 size_t PadAmount = Amount - Item.size();
51 case AlignStyle::Left:
55 case AlignStyle::Center: {
56 size_t X = PadAmount / 2;
59 fill(S, PadAmount - X);
70 void fill(llvm::raw_ostream &S, uint32_t Count) {
71 for (uint32_t I = 0; I < Count; ++I)