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https://github.com/c64scene-ar/llvm-6502.git
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202316 91177308-0d34-0410-b5e6-96231b3b80d8
172 lines
4.0 KiB
C++
172 lines
4.0 KiB
C++
//===-- Twine.cpp - Fast Temporary String Concatenation -------------------===//
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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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#include "llvm/ADT/Twine.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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std::string Twine::str() const {
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// If we're storing only a std::string, just return it.
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if (LHSKind == StdStringKind && RHSKind == EmptyKind)
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return *LHS.stdString;
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// Otherwise, flatten and copy the contents first.
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SmallString<256> Vec;
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return toStringRef(Vec).str();
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}
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void Twine::toVector(SmallVectorImpl<char> &Out) const {
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raw_svector_ostream OS(Out);
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print(OS);
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}
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StringRef Twine::toStringRef(SmallVectorImpl<char> &Out) const {
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if (isSingleStringRef())
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return getSingleStringRef();
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toVector(Out);
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return StringRef(Out.data(), Out.size());
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}
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StringRef Twine::toNullTerminatedStringRef(SmallVectorImpl<char> &Out) const {
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if (isUnary()) {
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switch (getLHSKind()) {
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case CStringKind:
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// Already null terminated, yay!
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return StringRef(LHS.cString);
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case StdStringKind: {
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const std::string *str = LHS.stdString;
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return StringRef(str->c_str(), str->size());
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}
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default:
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break;
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}
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}
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toVector(Out);
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Out.push_back(0);
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Out.pop_back();
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return StringRef(Out.data(), Out.size());
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}
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void Twine::printOneChild(raw_ostream &OS, Child Ptr,
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NodeKind Kind) const {
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switch (Kind) {
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case Twine::NullKind: break;
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case Twine::EmptyKind: break;
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case Twine::TwineKind:
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Ptr.twine->print(OS);
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break;
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case Twine::CStringKind:
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OS << Ptr.cString;
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break;
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case Twine::StdStringKind:
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OS << *Ptr.stdString;
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break;
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case Twine::StringRefKind:
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OS << *Ptr.stringRef;
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break;
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case Twine::CharKind:
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OS << Ptr.character;
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break;
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case Twine::DecUIKind:
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OS << Ptr.decUI;
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break;
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case Twine::DecIKind:
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OS << Ptr.decI;
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break;
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case Twine::DecULKind:
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OS << *Ptr.decUL;
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break;
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case Twine::DecLKind:
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OS << *Ptr.decL;
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break;
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case Twine::DecULLKind:
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OS << *Ptr.decULL;
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break;
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case Twine::DecLLKind:
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OS << *Ptr.decLL;
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break;
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case Twine::UHexKind:
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OS.write_hex(*Ptr.uHex);
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break;
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}
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}
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void Twine::printOneChildRepr(raw_ostream &OS, Child Ptr,
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NodeKind Kind) const {
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switch (Kind) {
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case Twine::NullKind:
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OS << "null"; break;
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case Twine::EmptyKind:
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OS << "empty"; break;
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case Twine::TwineKind:
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OS << "rope:";
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Ptr.twine->printRepr(OS);
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break;
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case Twine::CStringKind:
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OS << "cstring:\""
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<< Ptr.cString << "\"";
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break;
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case Twine::StdStringKind:
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OS << "std::string:\""
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<< Ptr.stdString << "\"";
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break;
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case Twine::StringRefKind:
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OS << "stringref:\""
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<< Ptr.stringRef << "\"";
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break;
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case Twine::CharKind:
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OS << "char:\"" << Ptr.character << "\"";
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break;
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case Twine::DecUIKind:
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OS << "decUI:\"" << Ptr.decUI << "\"";
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break;
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case Twine::DecIKind:
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OS << "decI:\"" << Ptr.decI << "\"";
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break;
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case Twine::DecULKind:
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OS << "decUL:\"" << *Ptr.decUL << "\"";
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break;
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case Twine::DecLKind:
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OS << "decL:\"" << *Ptr.decL << "\"";
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break;
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case Twine::DecULLKind:
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OS << "decULL:\"" << *Ptr.decULL << "\"";
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break;
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case Twine::DecLLKind:
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OS << "decLL:\"" << *Ptr.decLL << "\"";
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break;
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case Twine::UHexKind:
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OS << "uhex:\"" << Ptr.uHex << "\"";
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break;
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}
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}
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void Twine::print(raw_ostream &OS) const {
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printOneChild(OS, LHS, getLHSKind());
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printOneChild(OS, RHS, getRHSKind());
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}
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void Twine::printRepr(raw_ostream &OS) const {
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OS << "(Twine ";
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printOneChildRepr(OS, LHS, getLHSKind());
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OS << " ";
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printOneChildRepr(OS, RHS, getRHSKind());
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OS << ")";
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}
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void Twine::dump() const {
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print(dbgs());
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}
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void Twine::dumpRepr() const {
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printRepr(dbgs());
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}
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