2009-08-14 03:41:23 +00:00
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//===- 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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2010-05-05 19:00:56 +00:00
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#include "llvm/MC/MCExpr.h"
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2010-01-05 01:28:10 +00:00
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#include "llvm/Support/Debug.h"
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2009-08-14 03:41:23 +00:00
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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2009-08-22 07:22:36 +00:00
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// Sentinel value for the absolute pseudo section.
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2015-05-21 19:20:38 +00:00
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MCSection *MCSymbol::AbsolutePseudoSection = reinterpret_cast<MCSection *>(1);
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2009-08-22 07:22:36 +00:00
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2009-09-13 18:04:46 +00:00
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static bool isAcceptableChar(char C) {
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2013-10-18 02:14:40 +00:00
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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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2009-09-13 18:04:46 +00:00
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}
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2012-09-14 14:57:36 +00:00
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/// NameNeedsQuoting - Return true if the identifier \p Str needs quotes to be
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2010-01-17 20:11:03 +00:00
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/// syntactically correct.
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static bool NameNeedsQuoting(StringRef Str) {
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2009-09-13 18:04:46 +00:00
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assert(!Str.empty() && "Cannot create an empty MCSymbol");
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2012-05-11 01:41:30 +00:00
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2009-09-03 05:57:47 +00:00
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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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2009-09-13 18:04:46 +00:00
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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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2009-08-14 03:41:23 +00:00
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return true;
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return false;
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}
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2010-05-05 19:00:56 +00:00
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void MCSymbol::setVariableValue(const MCExpr *Value) {
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2010-11-15 14:40:36 +00:00
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assert(!IsUsed && "Cannot set a variable that has already been used.");
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2010-05-05 19:00:56 +00:00
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assert(Value && "Invalid variable value!");
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this->Value = Value;
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2015-06-01 14:34:40 +00:00
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Section = nullptr;
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HasFragment = false;
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2010-05-05 19:00:56 +00:00
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}
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2010-01-17 21:43:43 +00:00
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void MCSymbol::print(raw_ostream &OS) const {
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2010-01-17 19:23:46 +00:00
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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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2013-11-14 06:05:49 +00:00
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StringRef Name = getName();
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2015-05-27 05:12:37 +00:00
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if (Name.empty()) {
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OS << "\"\"";
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return;
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}
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2015-04-23 23:34:51 +00:00
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if (!NameNeedsQuoting(Name)) {
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2013-11-14 06:05:49 +00:00
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OS << Name;
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2009-09-13 18:04:46 +00:00
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return;
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}
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2012-05-11 01:41:30 +00:00
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2013-11-14 06:05:49 +00:00
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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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2009-08-14 03:41:23 +00:00
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}
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2012-09-12 05:06:18 +00:00
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#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
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2015-05-27 13:05:42 +00:00
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void MCSymbol::dump() const { dbgs() << *this; }
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2012-09-06 19:55:56 +00:00
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#endif
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