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   1 /* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
   2  * Use of this file is governed by the BSD 3-clause license that
   3  * can be found in the LICENSE.txt file in the project root.
   4  */
   5
   6 #include "atn/ATN.h"
   7 #include "Recognizer.h"
   8 #include "support/StringUtils.h"
   9 #include "ParserRuleContext.h"
  10 #include "misc/IntervalSet.h"
  11
  12 #include "RecognitionException.h"
  13
  14 using namespace antlr4;
  15
  16 RecognitionException::RecognitionException(Recognizer *recognizer, IntStream *input, ParserRuleContext *ctx,
  17                                            Token *offendingToken)
  18   : RecognitionException("", recognizer, input, ctx, offendingToken) {
  19 }
  20
  21 RecognitionException::RecognitionException(const std::string &message, Recognizer *recognizer, IntStream *input,
  22                                            ParserRuleContext *ctx, Token *offendingToken)
  23   : RuntimeException(message), _recognizer(recognizer), _input(input), _ctx(ctx), _offendingToken(offendingToken) {
  24   InitializeInstanceFields();
  25   if (recognizer != nullptr) {
  26     _offendingState = recognizer->getState();
  27   }
  28 }
  29
  30 RecognitionException::~RecognitionException() {
  31 }
  32
  33 size_t RecognitionException::getOffendingState() const {
  34   return _offendingState;
  35 }
  36
  37 void RecognitionException::setOffendingState(size_t offendingState) {
  38   _offendingState = offendingState;
  39 }
  40
  41 misc::IntervalSet RecognitionException::getExpectedTokens() const {
  42   if (_recognizer) {
  43     return _recognizer->getATN().getExpectedTokens(_offendingState, _ctx);
  44   }
  45   return misc::IntervalSet::EMPTY_SET;
  46 }
  47
  48 RuleContext* RecognitionException::getCtx() const {
  49   return _ctx;
  50 }
  51
  52 IntStream* RecognitionException::getInputStream() const {
  53   return _input;
  54 }
  55
  56 Token* RecognitionException::getOffendingToken() const {
  57   return _offendingToken;
  58 }
  59
  60 Recognizer* RecognitionException::getRecognizer() const {
  61   return _recognizer;
  62 }
  63
  64 void RecognitionException::InitializeInstanceFields() {
  65   _offendingState = INVALID_INDEX;
  66 }