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This adds const to a few methods that already return const references or creates a const version when they reterun non-const references. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221666 91177308-0d34-0410-b5e6-96231b3b80d8
207 lines
6.7 KiB
C++
207 lines
6.7 KiB
C++
//===-- llvm/MC/MCAsmParser.h - Abstract Asm Parser Interface ---*- C++ -*-===//
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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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#ifndef LLVM_MC_MCPARSER_MCASMPARSER_H
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#define LLVM_MC_MCPARSER_MCASMPARSER_H
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/MC/MCParser/AsmLexer.h"
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#include "llvm/Support/DataTypes.h"
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namespace llvm {
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class MCAsmInfo;
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class MCAsmLexer;
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class MCAsmParserExtension;
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class MCContext;
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class MCExpr;
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class MCInstPrinter;
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class MCInstrInfo;
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class MCStreamer;
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class MCTargetAsmParser;
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class SMLoc;
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class SMRange;
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class SourceMgr;
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class Twine;
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class InlineAsmIdentifierInfo {
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public:
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void *OpDecl;
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bool IsVarDecl;
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unsigned Length, Size, Type;
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void clear() {
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OpDecl = nullptr;
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IsVarDecl = false;
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Length = 1;
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Size = 0;
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Type = 0;
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}
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};
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/// Generic Sema callback for assembly parser.
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class MCAsmParserSemaCallback {
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public:
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virtual ~MCAsmParserSemaCallback();
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virtual void *LookupInlineAsmIdentifier(StringRef &LineBuf,
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InlineAsmIdentifierInfo &Info,
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bool IsUnevaluatedContext) = 0;
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virtual StringRef LookupInlineAsmLabel(StringRef Identifier, SourceMgr &SM,
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SMLoc Location, bool Create) = 0;
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virtual bool LookupInlineAsmField(StringRef Base, StringRef Member,
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unsigned &Offset) = 0;
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};
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/// Generic assembler parser interface, for use by target specific assembly
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/// parsers.
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class MCAsmParser {
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public:
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typedef bool (*DirectiveHandler)(MCAsmParserExtension*, StringRef, SMLoc);
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typedef std::pair<MCAsmParserExtension*, DirectiveHandler>
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ExtensionDirectiveHandler;
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private:
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MCAsmParser(const MCAsmParser &) LLVM_DELETED_FUNCTION;
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void operator=(const MCAsmParser &) LLVM_DELETED_FUNCTION;
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MCTargetAsmParser *TargetParser;
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unsigned ShowParsedOperands : 1;
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protected: // Can only create subclasses.
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MCAsmParser();
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public:
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virtual ~MCAsmParser();
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virtual void addDirectiveHandler(StringRef Directive,
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ExtensionDirectiveHandler Handler) = 0;
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virtual SourceMgr &getSourceManager() = 0;
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virtual MCAsmLexer &getLexer() = 0;
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const MCAsmLexer &getLexer() const {
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return const_cast<MCAsmParser*>(this)->getLexer();
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}
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virtual MCContext &getContext() = 0;
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/// Return the output streamer for the assembler.
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virtual MCStreamer &getStreamer() = 0;
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MCTargetAsmParser &getTargetParser() const { return *TargetParser; }
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void setTargetParser(MCTargetAsmParser &P);
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virtual unsigned getAssemblerDialect() { return 0;}
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virtual void setAssemblerDialect(unsigned i) { }
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bool getShowParsedOperands() const { return ShowParsedOperands; }
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void setShowParsedOperands(bool Value) { ShowParsedOperands = Value; }
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/// Run the parser on the input source buffer.
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virtual bool Run(bool NoInitialTextSection, bool NoFinalize = false) = 0;
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virtual void setParsingInlineAsm(bool V) = 0;
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virtual bool isParsingInlineAsm() = 0;
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/// Parse ms-style inline assembly.
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virtual bool parseMSInlineAsm(
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void *AsmLoc, std::string &AsmString, unsigned &NumOutputs,
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unsigned &NumInputs, SmallVectorImpl<std::pair<void *, bool>> &OpDecls,
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SmallVectorImpl<std::string> &Constraints,
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SmallVectorImpl<std::string> &Clobbers, const MCInstrInfo *MII,
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const MCInstPrinter *IP, MCAsmParserSemaCallback &SI) = 0;
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/// Emit a note at the location \p L, with the message \p Msg.
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virtual void Note(SMLoc L, const Twine &Msg,
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ArrayRef<SMRange> Ranges = None) = 0;
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/// Emit a warning at the location \p L, with the message \p Msg.
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///
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/// \return The return value is true, if warnings are fatal.
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virtual bool Warning(SMLoc L, const Twine &Msg,
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ArrayRef<SMRange> Ranges = None) = 0;
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/// Emit an error at the location \p L, with the message \p Msg.
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///
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/// \return The return value is always true, as an idiomatic convenience to
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/// clients.
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virtual bool Error(SMLoc L, const Twine &Msg,
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ArrayRef<SMRange> Ranges = None) = 0;
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/// Get the next AsmToken in the stream, possibly handling file inclusion
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/// first.
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virtual const AsmToken &Lex() = 0;
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/// Get the current AsmToken from the stream.
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const AsmToken &getTok() const;
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/// \brief Report an error at the current lexer location.
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bool TokError(const Twine &Msg, ArrayRef<SMRange> Ranges = None);
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/// Parse an identifier or string (as a quoted identifier) and set \p Res to
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/// the identifier contents.
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virtual bool parseIdentifier(StringRef &Res) = 0;
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/// \brief Parse up to the end of statement and return the contents from the
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/// current token until the end of the statement; the current token on exit
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/// will be either the EndOfStatement or EOF.
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virtual StringRef parseStringToEndOfStatement() = 0;
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/// Parse the current token as a string which may include escaped characters
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/// and return the string contents.
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virtual bool parseEscapedString(std::string &Data) = 0;
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/// Skip to the end of the current statement, for error recovery.
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virtual void eatToEndOfStatement() = 0;
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/// Parse an arbitrary expression.
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///
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/// @param Res - The value of the expression. The result is undefined
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/// on error.
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/// @result - False on success.
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virtual bool parseExpression(const MCExpr *&Res, SMLoc &EndLoc) = 0;
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bool parseExpression(const MCExpr *&Res);
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/// Parse a primary expression.
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///
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/// @param Res - The value of the expression. The result is undefined
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/// on error.
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/// @result - False on success.
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virtual bool parsePrimaryExpr(const MCExpr *&Res, SMLoc &EndLoc) = 0;
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/// Parse an arbitrary expression, assuming that an initial '(' has already
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/// been consumed.
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///
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/// @param Res - The value of the expression. The result is undefined
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/// on error.
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/// @result - False on success.
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virtual bool parseParenExpression(const MCExpr *&Res, SMLoc &EndLoc) = 0;
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/// Parse an expression which must evaluate to an absolute value.
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///
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/// @param Res - The value of the absolute expression. The result is undefined
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/// on error.
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/// @result - False on success.
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virtual bool parseAbsoluteExpression(int64_t &Res) = 0;
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/// Ensure that we have a valid section set in the streamer. Otherwise, report
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/// an error and switch to .text.
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virtual void checkForValidSection() = 0;
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};
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/// \brief Create an MCAsmParser instance.
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MCAsmParser *createMCAsmParser(SourceMgr &, MCContext &,
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MCStreamer &, const MCAsmInfo &);
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} // End llvm namespace
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#endif
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