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305 lines
8.0 KiB
C++
305 lines
8.0 KiB
C++
//===-- StreamWriter.h ----------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TOOLS_LLVM_READOBJ_STREAMWRITER_H
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#define LLVM_TOOLS_LLVM_READOBJ_STREAMWRITER_H
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/DataTypes.h"
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#include "llvm/Support/Endian.h"
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#include "llvm/Support/raw_ostream.h"
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#include <algorithm>
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using namespace llvm;
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using namespace llvm::support;
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namespace llvm {
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template<typename T>
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struct EnumEntry {
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StringRef Name;
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T Value;
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};
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struct HexNumber {
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// To avoid sign-extension we have to explicitly cast to the appropriate
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// unsigned type. The overloads are here so that every type that is implicitly
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// convertible to an integer (including enums and endian helpers) can be used
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// without requiring type traits or call-site changes.
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HexNumber(int8_t Value) : Value(static_cast<uint8_t >(Value)) { }
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HexNumber(int16_t Value) : Value(static_cast<uint16_t>(Value)) { }
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HexNumber(int32_t Value) : Value(static_cast<uint32_t>(Value)) { }
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HexNumber(int64_t Value) : Value(static_cast<uint64_t>(Value)) { }
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HexNumber(uint8_t Value) : Value(Value) { }
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HexNumber(uint16_t Value) : Value(Value) { }
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HexNumber(uint32_t Value) : Value(Value) { }
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HexNumber(uint64_t Value) : Value(Value) { }
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uint64_t Value;
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};
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raw_ostream &operator<<(raw_ostream &OS, const HexNumber& Value);
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class StreamWriter {
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public:
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StreamWriter(raw_ostream &OS)
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: OS(OS)
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, IndentLevel(0) {
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}
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void flush() {
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OS.flush();
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}
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void indent(int Levels = 1) {
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IndentLevel += Levels;
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}
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void unindent(int Levels = 1) {
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IndentLevel = std::max(0, IndentLevel - Levels);
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}
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void printIndent() {
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for (int i = 0; i < IndentLevel; ++i)
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OS << " ";
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}
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template<typename T>
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HexNumber hex(T Value) {
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return HexNumber(Value);
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}
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template<typename T, typename TEnum>
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void printEnum(StringRef Label, T Value,
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ArrayRef<EnumEntry<TEnum> > EnumValues) {
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StringRef Name;
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bool Found = false;
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for (const auto &EnumItem : EnumValues) {
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if (EnumItem.Value == Value) {
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Name = EnumItem.Name;
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Found = true;
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break;
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}
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}
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if (Found) {
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startLine() << Label << ": " << Name << " (" << hex(Value) << ")\n";
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} else {
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startLine() << Label << ": " << hex(Value) << "\n";
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}
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}
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template <typename T, typename TFlag>
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void printFlags(StringRef Label, T Value, ArrayRef<EnumEntry<TFlag>> Flags,
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TFlag EnumMask1 = {}, TFlag EnumMask2 = {},
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TFlag EnumMask3 = {}) {
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typedef EnumEntry<TFlag> FlagEntry;
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typedef SmallVector<FlagEntry, 10> FlagVector;
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FlagVector SetFlags;
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for (const auto &Flag : Flags) {
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if (Flag.Value == 0)
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continue;
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TFlag EnumMask{};
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if (Flag.Value & EnumMask1)
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EnumMask = EnumMask1;
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else if (Flag.Value & EnumMask2)
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EnumMask = EnumMask2;
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else if (Flag.Value & EnumMask3)
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EnumMask = EnumMask3;
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bool IsEnum = (Flag.Value & EnumMask) != 0;
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if ((!IsEnum && (Value & Flag.Value) == Flag.Value) ||
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(IsEnum && (Value & EnumMask) == Flag.Value)) {
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SetFlags.push_back(Flag);
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}
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}
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std::sort(SetFlags.begin(), SetFlags.end(), &flagName<TFlag>);
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startLine() << Label << " [ (" << hex(Value) << ")\n";
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for (const auto &Flag : SetFlags) {
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startLine() << " " << Flag.Name << " (" << hex(Flag.Value) << ")\n";
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}
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startLine() << "]\n";
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}
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template<typename T>
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void printFlags(StringRef Label, T Value) {
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startLine() << Label << " [ (" << hex(Value) << ")\n";
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uint64_t Flag = 1;
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uint64_t Curr = Value;
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while (Curr > 0) {
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if (Curr & 1)
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startLine() << " " << hex(Flag) << "\n";
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Curr >>= 1;
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Flag <<= 1;
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}
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startLine() << "]\n";
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}
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void printNumber(StringRef Label, uint64_t Value) {
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startLine() << Label << ": " << Value << "\n";
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}
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void printNumber(StringRef Label, uint32_t Value) {
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startLine() << Label << ": " << Value << "\n";
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}
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void printNumber(StringRef Label, uint16_t Value) {
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startLine() << Label << ": " << Value << "\n";
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}
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void printNumber(StringRef Label, uint8_t Value) {
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startLine() << Label << ": " << unsigned(Value) << "\n";
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}
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void printNumber(StringRef Label, int64_t Value) {
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startLine() << Label << ": " << Value << "\n";
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}
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void printNumber(StringRef Label, int32_t Value) {
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startLine() << Label << ": " << Value << "\n";
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}
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void printNumber(StringRef Label, int16_t Value) {
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startLine() << Label << ": " << Value << "\n";
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}
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void printNumber(StringRef Label, int8_t Value) {
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startLine() << Label << ": " << int(Value) << "\n";
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}
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void printBoolean(StringRef Label, bool Value) {
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startLine() << Label << ": " << (Value ? "Yes" : "No") << '\n';
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}
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template <typename T>
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void printList(StringRef Label, const T &List) {
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startLine() << Label << ": [";
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bool Comma = false;
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for (const auto &Item : List) {
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if (Comma)
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OS << ", ";
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OS << Item;
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Comma = true;
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}
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OS << "]\n";
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}
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template<typename T>
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void printHex(StringRef Label, T Value) {
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startLine() << Label << ": " << hex(Value) << "\n";
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}
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template<typename T>
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void printHex(StringRef Label, StringRef Str, T Value) {
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startLine() << Label << ": " << Str << " (" << hex(Value) << ")\n";
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}
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void printString(StringRef Label, StringRef Value) {
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startLine() << Label << ": " << Value << "\n";
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}
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void printString(StringRef Label, const std::string &Value) {
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startLine() << Label << ": " << Value << "\n";
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}
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template<typename T>
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void printNumber(StringRef Label, StringRef Str, T Value) {
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startLine() << Label << ": " << Str << " (" << Value << ")\n";
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}
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void printBinary(StringRef Label, StringRef Str, ArrayRef<uint8_t> Value) {
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printBinaryImpl(Label, Str, Value, false);
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}
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void printBinary(StringRef Label, StringRef Str, ArrayRef<char> Value) {
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auto V = makeArrayRef(reinterpret_cast<const uint8_t*>(Value.data()),
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Value.size());
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printBinaryImpl(Label, Str, V, false);
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}
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void printBinary(StringRef Label, ArrayRef<uint8_t> Value) {
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printBinaryImpl(Label, StringRef(), Value, false);
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}
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void printBinary(StringRef Label, ArrayRef<char> Value) {
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auto V = makeArrayRef(reinterpret_cast<const uint8_t*>(Value.data()),
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Value.size());
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printBinaryImpl(Label, StringRef(), V, false);
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}
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void printBinary(StringRef Label, StringRef Value) {
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auto V = makeArrayRef(reinterpret_cast<const uint8_t*>(Value.data()),
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Value.size());
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printBinaryImpl(Label, StringRef(), V, false);
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}
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void printBinaryBlock(StringRef Label, StringRef Value) {
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auto V = makeArrayRef(reinterpret_cast<const uint8_t*>(Value.data()),
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Value.size());
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printBinaryImpl(Label, StringRef(), V, true);
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}
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raw_ostream& startLine() {
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printIndent();
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return OS;
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}
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raw_ostream& getOStream() {
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return OS;
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}
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private:
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template<typename T>
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static bool flagName(const EnumEntry<T>& lhs, const EnumEntry<T>& rhs) {
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return lhs.Name < rhs.Name;
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}
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void printBinaryImpl(StringRef Label, StringRef Str, ArrayRef<uint8_t> Value,
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bool Block);
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raw_ostream &OS;
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int IndentLevel;
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};
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struct DictScope {
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DictScope(StreamWriter& W, StringRef N) : W(W) {
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W.startLine() << N << " {\n";
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W.indent();
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}
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~DictScope() {
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W.unindent();
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W.startLine() << "}\n";
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}
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StreamWriter& W;
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};
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struct ListScope {
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ListScope(StreamWriter& W, StringRef N) : W(W) {
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W.startLine() << N << " [\n";
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W.indent();
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}
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~ListScope() {
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W.unindent();
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W.startLine() << "]\n";
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}
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StreamWriter& W;
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};
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} // namespace llvm
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#endif
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