1 //===-- Twine.cpp - Fast Temporary String Concatenation -------------------===//
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 #include "llvm/ADT/Twine.h"
11 #include "llvm/Support/raw_ostream.h"
14 std::string Twine::str() const {
15 // FIXME: This should probably use the toVector implementation, once that is
18 raw_string_ostream OS(Res);
24 void Twine::toVector(SmallVectorImpl<char> &Out) const {
25 // FIXME: This is very inefficient, since we are creating a large raw_ostream
26 // buffer -- hitting malloc, which we were supposed to avoid -- all when we
27 // have this pretty little small vector available.
29 // The best way to fix this is to make raw_svector_ostream do the right thing
30 // and be efficient, by augmenting the base raw_ostream with the ability to
31 // have the buffer managed by a concrete implementation.
32 raw_svector_ostream OS(Out);
36 void Twine::printOneChild(raw_ostream &OS, const void *Ptr,
37 NodeKind Kind) const {
39 case Twine::NullKind: break;
40 case Twine::EmptyKind: break;
41 case Twine::TwineKind:
42 static_cast<const Twine*>(Ptr)->print(OS);
44 case Twine::CStringKind:
45 OS << static_cast<const char*>(Ptr);
47 case Twine::StdStringKind:
48 OS << *static_cast<const std::string*>(Ptr);
50 case Twine::StringRefKind:
51 OS << *static_cast<const StringRef*>(Ptr);
53 case Twine::DecUIKind:
54 OS << *static_cast<const unsigned int*>(Ptr);
57 OS << *static_cast<const int*>(Ptr);
59 case Twine::DecULKind:
60 OS << *static_cast<const unsigned long*>(Ptr);
63 OS << *static_cast<const long*>(Ptr);
65 case Twine::DecULLKind:
66 OS << *static_cast<const unsigned long long*>(Ptr);
68 case Twine::DecLLKind:
69 OS << *static_cast<const long long*>(Ptr);
72 OS.write_hex(*static_cast<const uint64_t*>(Ptr));
77 void Twine::printOneChildRepr(raw_ostream &OS, const void *Ptr,
78 NodeKind Kind) const {
82 case Twine::EmptyKind:
84 case Twine::TwineKind:
86 static_cast<const Twine*>(Ptr)->printRepr(OS);
88 case Twine::CStringKind:
90 << static_cast<const char*>(Ptr) << "\"";
92 case Twine::StdStringKind:
93 OS << "std::string:\""
94 << static_cast<const std::string*>(Ptr) << "\"";
96 case Twine::StringRefKind:
98 << static_cast<const StringRef*>(Ptr) << "\"";
100 case Twine::DecUIKind:
101 OS << "decUI:\"" << *static_cast<const unsigned int*>(Ptr) << "\"";
103 case Twine::DecIKind:
104 OS << "decI:\"" << *static_cast<const int*>(Ptr) << "\"";
106 case Twine::DecULKind:
107 OS << "decUL:\"" << *static_cast<const unsigned long*>(Ptr) << "\"";
109 case Twine::DecLKind:
110 OS << "decL:\"" << *static_cast<const long*>(Ptr) << "\"";
112 case Twine::DecULLKind:
113 OS << "decULL:\"" << *static_cast<const unsigned long long*>(Ptr) << "\"";
115 case Twine::DecLLKind:
116 OS << "decLL:\"" << *static_cast<const long long*>(Ptr) << "\"";
118 case Twine::UHexKind:
119 OS << "uhex:\"" << static_cast<const uint64_t*>(Ptr) << "\"";
124 void Twine::print(raw_ostream &OS) const {
125 printOneChild(OS, LHS, getLHSKind());
126 printOneChild(OS, RHS, getRHSKind());
129 void Twine::printRepr(raw_ostream &OS) const {
131 printOneChildRepr(OS, LHS, getLHSKind());
133 printOneChildRepr(OS, RHS, getRHSKind());
137 void Twine::dump() const {
141 void Twine::dumpRepr() const {
142 printRepr(llvm::errs());