65 lines
1.9 KiB
C++
Executable File
65 lines
1.9 KiB
C++
Executable File
/* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
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* Use of this file is governed by the BSD 3-clause license that
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* can be found in the LICENSE.txt file in the project root.
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*/
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#include "Token.h"
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#include "Vocabulary.h"
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using namespace antlr4::dfa;
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const Vocabulary Vocabulary::EMPTY_VOCABULARY;
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Vocabulary::Vocabulary(std::vector<std::string> literalNames, std::vector<std::string> symbolicNames)
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: Vocabulary(std::move(literalNames), std::move(symbolicNames), {}) {
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}
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Vocabulary::Vocabulary(std::vector<std::string> literalNames,
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std::vector<std::string> symbolicNames, std::vector<std::string> displayNames)
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: _literalNames(std::move(literalNames)), _symbolicNames(std::move(symbolicNames)), _displayNames(std::move(displayNames)),
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_maxTokenType(std::max(_displayNames.size(), std::max(_literalNames.size(), _symbolicNames.size())) - 1) {
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// See note here on -1 part: https://github.com/antlr/antlr4/pull/1146
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}
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std::string_view Vocabulary::getLiteralName(size_t tokenType) const {
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if (tokenType < _literalNames.size()) {
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return _literalNames[tokenType];
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}
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return "";
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}
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std::string_view Vocabulary::getSymbolicName(size_t tokenType) const {
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if (tokenType == Token::EOF) {
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return "EOF";
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}
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if (tokenType < _symbolicNames.size()) {
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return _symbolicNames[tokenType];
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}
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return "";
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}
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std::string Vocabulary::getDisplayName(size_t tokenType) const {
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if (tokenType < _displayNames.size()) {
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std::string_view displayName = _displayNames[tokenType];
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if (!displayName.empty()) {
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return std::string(displayName);
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}
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}
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std::string_view literalName = getLiteralName(tokenType);
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if (!literalName.empty()) {
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return std::string(literalName);
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}
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std::string_view symbolicName = getSymbolicName(tokenType);
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if (!symbolicName.empty()) {
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return std::string(symbolicName);
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}
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return std::to_string(tokenType);
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}
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