1 files changed, 178 insertions, 0 deletions
diff --git a/include/llvm/MC/MCParser/AsmParser.h b/include/llvm/MC/MCParser/AsmParser.h
new file mode 100644
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+++ b/include/llvm/MC/MCParser/AsmParser.h
@@ -0,0 +1,178 @@
+//===- AsmParser.h - Parser for Assembly Files ------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This class declares the parser for assembly files.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef ASMPARSER_H
+#define ASMPARSER_H
+
+#include <vector>
+#include "llvm/MC/MCParser/AsmLexer.h"
+#include "llvm/MC/MCParser/AsmCond.h"
+#include "llvm/MC/MCParser/MCAsmParser.h"
+#include "llvm/MC/MCSectionMachO.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/ADT/StringMap.h"
+
+namespace llvm {
+class AsmCond;
+class AsmToken;
+class MCContext;
+class MCExpr;
+class MCInst;
+class MCStreamer;
+class MCAsmInfo;
+class MCValue;
+class SourceMgr;
+class TargetAsmParser;
+class Twine;
+
+class AsmParser : public MCAsmParser {
+private:
+  AsmLexer Lexer;
+  MCContext &Ctx;
+  MCStreamer &Out;
+  SourceMgr &SrcMgr;
+  TargetAsmParser *TargetParser;
+  
+  /// This is the current buffer index we're lexing from as managed by the
+  /// SourceMgr object.
+  int CurBuffer;
+
+  AsmCond TheCondState;
+  std::vector<AsmCond> TheCondStack;
+
+  // FIXME: Figure out where this should leave, the code is a copy of that which
+  // is also used by TargetLoweringObjectFile.
+  mutable void *SectionUniquingMap;
+
+  /// DirectiveMap - This is a table handlers for directives.  Each handler is
+  /// invoked after the directive identifier is read and is responsible for
+  /// parsing and validating the rest of the directive.  The handler is passed
+  /// in the directive name and the location of the directive keyword.
+  StringMap<bool(AsmParser::*)(StringRef, SMLoc)> DirectiveMap;
+public:
+  AsmParser(SourceMgr &_SM, MCContext &_Ctx, MCStreamer &_Out,
+            const MCAsmInfo &_MAI);
+  ~AsmParser();
+
+  bool Run();
+
+  
+  void AddDirectiveHandler(StringRef Directive,
+                           bool (AsmParser::*Handler)(StringRef, SMLoc)) {
+    DirectiveMap[Directive] = Handler;
+  }
+public:
+  TargetAsmParser &getTargetParser() const { return *TargetParser; }
+  void setTargetParser(TargetAsmParser &P) { TargetParser = &P; }
+
+  /// @name MCAsmParser Interface
+  /// {
+
+  virtual MCAsmLexer &getLexer() { return Lexer; }
+  virtual MCContext &getContext() { return Ctx; }
+  virtual MCStreamer &getStreamer() { return Out; }
+
+  virtual void Warning(SMLoc L, const Twine &Meg);
+  virtual bool Error(SMLoc L, const Twine &Msg);
+
+  const AsmToken &Lex();
+
+  bool ParseExpression(const MCExpr *&Res);
+  virtual bool ParseExpression(const MCExpr *&Res, SMLoc &EndLoc);
+  virtual bool ParseParenExpression(const MCExpr *&Res, SMLoc &EndLoc);
+  virtual bool ParseAbsoluteExpression(int64_t &Res);
+
+  /// }
+
+private:
+  MCSymbol *CreateSymbol(StringRef Name);
+
+  // FIXME: See comment on SectionUniquingMap.
+  const MCSection *getMachOSection(const StringRef &Segment,
+                                   const StringRef &Section,
+                                   unsigned TypeAndAttributes,
+                                   unsigned Reserved2,
+                                   SectionKind Kind) const;
+
+  bool ParseStatement();
+
+  bool TokError(const char *Msg);
+  
+  void PrintMessage(SMLoc Loc, const std::string &Msg, const char *Type) const;
+    
+  /// EnterIncludeFile - Enter the specified file. This returns true on failure.
+  bool EnterIncludeFile(const std::string &Filename);
+  
+  bool ParseConditionalAssemblyDirectives(StringRef Directive,
+                                          SMLoc DirectiveLoc);
+  void EatToEndOfStatement();
+  
+  bool ParseAssignment(const StringRef &Name);
+
+  bool ParsePrimaryExpr(const MCExpr *&Res, SMLoc &EndLoc);
+  bool ParseBinOpRHS(unsigned Precedence, const MCExpr *&Res, SMLoc &EndLoc);
+  bool ParseParenExpr(const MCExpr *&Res, SMLoc &EndLoc);
+
+  /// ParseIdentifier - Parse an identifier or string (as a quoted identifier)
+  /// and set \arg Res to the identifier contents.
+  bool ParseIdentifier(StringRef &Res);
+  
+  // Directive Parsing.
+  bool ParseDirectiveDarwinSection(); // Darwin specific ".section".
+  bool ParseDirectiveSectionSwitch(const char *Segment, const char *Section,
+                                   unsigned TAA = 0, unsigned ImplicitAlign = 0,
+                                   unsigned StubSize = 0);
+  bool ParseDirectiveAscii(bool ZeroTerminated); // ".ascii", ".asciiz"
+  bool ParseDirectiveValue(unsigned Size); // ".byte", ".long", ...
+  bool ParseDirectiveFill(); // ".fill"
+  bool ParseDirectiveSpace(); // ".space"
+  bool ParseDirectiveSet(); // ".set"
+  bool ParseDirectiveOrg(); // ".org"
+  // ".align{,32}", ".p2align{,w,l}"
+  bool ParseDirectiveAlign(bool IsPow2, unsigned ValueSize);
+
+  /// ParseDirectiveSymbolAttribute - Parse a directive like ".globl" which
+  /// accepts a single symbol (which should be a label or an external).
+  bool ParseDirectiveSymbolAttribute(MCSymbolAttr Attr);
+  bool ParseDirectiveDarwinSymbolDesc(); // Darwin specific ".desc"
+  bool ParseDirectiveDarwinLsym(); // Darwin specific ".lsym"
+
+  bool ParseDirectiveComm(bool IsLocal); // ".comm" and ".lcomm"
+  bool ParseDirectiveDarwinZerofill(); // Darwin specific ".zerofill"
+
+  // Darwin specific ".subsections_via_symbols"
+  bool ParseDirectiveDarwinSubsectionsViaSymbols();
+  // Darwin specific .dump and .load
+  bool ParseDirectiveDarwinDumpOrLoad(SMLoc IDLoc, bool IsDump);
+
+  bool ParseDirectiveAbort(); // ".abort"
+  bool ParseDirectiveInclude(); // ".include"
+
+  bool ParseDirectiveIf(SMLoc DirectiveLoc); // ".if"
+  bool ParseDirectiveElseIf(SMLoc DirectiveLoc); // ".elseif"
+  bool ParseDirectiveElse(SMLoc DirectiveLoc); // ".else"
+  bool ParseDirectiveEndIf(SMLoc DirectiveLoc); // .endif
+
+  bool ParseDirectiveFile(StringRef, SMLoc DirectiveLoc); // ".file"
+  bool ParseDirectiveLine(StringRef, SMLoc DirectiveLoc); // ".line"
+  bool ParseDirectiveLoc(StringRef, SMLoc DirectiveLoc); // ".loc"
+
+  /// ParseEscapedString - Parse the current token as a string which may include
+  /// escaped characters and return the string contents.
+  bool ParseEscapedString(std::string &Data);
+};
+
+} // end namespace llvm
+
+#endif