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/* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
* Use of this file is governed by the BSD 3-clause license that
* can be found in the LICENSE.txt file in the project root.
*/
#include "ConsoleErrorListener.h"
#include "RecognitionException.h"
#include "support/CPPUtils.h"
#include "Token.h"
#include "atn/ATN.h"
#include "atn/ATNSimulator.h"
#include "support/CPPUtils.h"
#include "support/StringUtils.h"
#include "Vocabulary.h"
#include "Recognizer.h"
using namespace antlr4;
using namespace antlr4::atn;
using namespace antlr4::internal;
std::map<const dfa::Vocabulary*, std::map<std::string_view, size_t>> Recognizer::_tokenTypeMapCache;
std::map<std::vector<std::string>, std::map<std::string, size_t>> Recognizer::_ruleIndexMapCache;
Recognizer::Recognizer() {
InitializeInstanceFields();
_proxListener.addErrorListener(&ConsoleErrorListener::INSTANCE);
}
Recognizer::~Recognizer() {
}
std::map<std::string_view, size_t> Recognizer::getTokenTypeMap() {
const dfa::Vocabulary& vocabulary = getVocabulary();
UniqueLock<Mutex> lck(_mutex);
std::map<std::string_view, size_t> result;
auto iterator = _tokenTypeMapCache.find(&vocabulary);
if (iterator != _tokenTypeMapCache.end()) {
result = iterator->second;
} else {
for (size_t i = 0; i <= getATN().maxTokenType; ++i) {
std::string_view literalName = vocabulary.getLiteralName(i);
if (!literalName.empty()) {
result[literalName] = i;
}
std::string_view symbolicName = vocabulary.getSymbolicName(i);
if (!symbolicName.empty()) {
result[symbolicName] = i;
}
}
result["EOF"] = EOF;
_tokenTypeMapCache[&vocabulary] = result;
}
return result;
}
std::map<std::string, size_t> Recognizer::getRuleIndexMap() {
const std::vector<std::string>& ruleNames = getRuleNames();
if (ruleNames.empty()) {
throw "The current recognizer does not provide a list of rule names.";
}
UniqueLock<Mutex> lck(_mutex);
std::map<std::string, size_t> result;
auto iterator = _ruleIndexMapCache.find(ruleNames);
if (iterator != _ruleIndexMapCache.end()) {
result = iterator->second;
} else {
result = antlrcpp::toMap(ruleNames);
_ruleIndexMapCache[ruleNames] = result;
}
return result;
}
size_t Recognizer::getTokenType(std::string_view tokenName) {
const std::map<std::string_view, size_t> &map = getTokenTypeMap();
auto iterator = map.find(tokenName);
if (iterator == map.end())
return Token::INVALID_TYPE;
return iterator->second;
}
void Recognizer::setInterpreter(atn::ATNSimulator *interpreter) {
// Usually the interpreter is set by the descendant (lexer or parser (simulator), but can also be exchanged
// by the profiling ATN simulator.
delete _interpreter;
_interpreter = interpreter;
}
std::string Recognizer::getErrorHeader(RecognitionException *e) {
// We're having issues with cross header dependencies, these two classes will need to be
// rewritten to remove that.
size_t line = e->getOffendingToken()->getLine();
size_t charPositionInLine = e->getOffendingToken()->getCharPositionInLine();
return std::string("line ") + std::to_string(line) + ":" + std::to_string(charPositionInLine);
}
std::string Recognizer::getTokenErrorDisplay(Token *t) {
if (t == nullptr) {
return "<no Token>";
}
std::string s = t->getText();
if (s == "") {
if (t->getType() == EOF) {
s = "<EOF>";
} else {
s = std::string("<") + std::to_string(t->getType()) + std::string(">");
}
}
std::string result;
result.reserve(s.size() + 2);
result.push_back('\'');
antlrcpp::escapeWhitespace(result, s);
result.push_back('\'');
result.shrink_to_fit();
return result;
}
void Recognizer::addErrorListener(ANTLRErrorListener *listener) {
_proxListener.addErrorListener(listener);
}
void Recognizer::removeErrorListener(ANTLRErrorListener *listener) {
_proxListener.removeErrorListener(listener);
}
void Recognizer::removeErrorListeners() {
_proxListener.removeErrorListeners();
}
ProxyErrorListener& Recognizer::getErrorListenerDispatch() {
return _proxListener;
}
bool Recognizer::sempred(RuleContext * /*localctx*/, size_t /*ruleIndex*/, size_t /*actionIndex*/) {
return true;
}
bool Recognizer::precpred(RuleContext * /*localctx*/, int /*precedence*/) {
return true;
}
void Recognizer::action(RuleContext * /*localctx*/, size_t /*ruleIndex*/, size_t /*actionIndex*/) {
}
void Recognizer::InitializeInstanceFields() {
_stateNumber = ATNState::INVALID_STATE_NUMBER;
_interpreter = nullptr;
}
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