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