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6ec2992aca
Currently symbol names are printed in quotes if it contains something outside of the arbitrary set of characters that isAcceptableChar tests for. On somem targets, it is never OK to print a symbol name in quotes so allow targets to opt out of this behavior. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235670 91177308-0d34-0410-b5e6-96231b3b80d8
77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
//===- lib/MC/MCSymbol.cpp - MCSymbol implementation ----------------------===//
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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/MC/MCSymbol.h"
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#include "llvm/MC/MCExpr.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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// Sentinel value for the absolute pseudo section.
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const MCSection *MCSymbol::AbsolutePseudoSection =
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reinterpret_cast<const MCSection *>(1);
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static bool isAcceptableChar(char C) {
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if ((C < 'a' || C > 'z') &&
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(C < 'A' || C > 'Z') &&
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(C < '0' || C > '9') &&
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C != '_' && C != '$' && C != '.' && C != '@')
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return false;
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return true;
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}
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/// NameNeedsQuoting - Return true if the identifier \p Str needs quotes to be
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/// syntactically correct.
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static bool NameNeedsQuoting(StringRef Str) {
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assert(!Str.empty() && "Cannot create an empty MCSymbol");
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// If any of the characters in the string is an unacceptable character, force
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// quotes.
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for (unsigned i = 0, e = Str.size(); i != e; ++i)
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if (!isAcceptableChar(Str[i]))
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return true;
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return false;
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}
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void MCSymbol::setVariableValue(const MCExpr *Value) {
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assert(!IsUsed && "Cannot set a variable that has already been used.");
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assert(Value && "Invalid variable value!");
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this->Value = Value;
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this->Section = nullptr;
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}
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void MCSymbol::print(raw_ostream &OS) const {
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// The name for this MCSymbol is required to be a valid target name. However,
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// some targets support quoting names with funny characters. If the name
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// contains a funny character, then print it quoted.
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StringRef Name = getName();
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if (NoQuoting || !NameNeedsQuoting(Name)) {
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OS << Name;
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return;
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}
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OS << '"';
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for (unsigned I = 0, E = Name.size(); I != E; ++I) {
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char C = Name[I];
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if (C == '\n')
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OS << "\\n";
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else if (C == '"')
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OS << "\\\"";
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else
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OS << C;
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}
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OS << '"';
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}
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#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
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void MCSymbol::dump() const {
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print(dbgs());
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}
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#endif
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