blob: 1dadc76200b045e4b6030dc985695eb57f45fbad [file] [log] [blame]
//===- StringMatcher.h - Generate a matcher for input strings ---*- C++ -*-===//
// The LLVM Compiler Infrastructure
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
// This file implements the StringMatcher class.
#include <vector>
#include <string>
#include <utility>
#include "llvm/ADT/StringRef.h"
namespace llvm {
class raw_ostream;
/// StringMatcher - Given a list of strings and code to execute when they match,
/// output a simple switch tree to classify the input string.
/// If a match is found, the code in Vals[i].second is executed; control must
/// not exit this code fragment. If nothing matches, execution falls through.
class StringMatcher {
typedef std::pair<std::string, std::string> StringPair;
StringRef StrVariableName;
const std::vector<StringPair> &Matches;
raw_ostream &OS;
StringMatcher(StringRef strVariableName,
const std::vector<StringPair> &matches, raw_ostream &os)
: StrVariableName(strVariableName), Matches(matches), OS(os) {}
void Emit(unsigned Indent = 0) const;
bool EmitStringMatcherForChar(const std::vector<const StringPair*> &Matches,
unsigned CharNo, unsigned IndentCount) const;
} // end llvm namespace.