86 lines
3.2 KiB
C
86 lines
3.2 KiB
C
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/* 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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#pragma once
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#include "atn/LexerAction.h"
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#include "atn/ATNDeserializationOptions.h"
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namespace antlr4 {
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namespace atn {
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class ANTLR4CPP_PUBLIC ATNDeserializer {
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public:
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static const size_t SERIALIZED_VERSION;
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/// This is the current serialized UUID.
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// ml: defined as function to avoid the “static initialization order fiasco”.
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static Guid SERIALIZED_UUID();
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ATNDeserializer();
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ATNDeserializer(const ATNDeserializationOptions& dso);
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virtual ~ATNDeserializer();
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static Guid toUUID(const unsigned short *data, size_t offset);
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virtual ATN deserialize(const std::vector<uint16_t> &input);
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virtual void verifyATN(const ATN &atn);
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static void checkCondition(bool condition);
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static void checkCondition(bool condition, const std::string &message);
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static Transition *edgeFactory(const ATN &atn, size_t type, size_t src, size_t trg, size_t arg1, size_t arg2,
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size_t arg3, const std::vector<misc::IntervalSet> &sets);
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static ATNState *stateFactory(size_t type, size_t ruleIndex);
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protected:
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/// Determines if a particular serialized representation of an ATN supports
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/// a particular feature, identified by the <seealso cref="UUID"/> used for serializing
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/// the ATN at the time the feature was first introduced.
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///
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/// <param name="feature"> The <seealso cref="UUID"/> marking the first time the feature was
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/// supported in the serialized ATN. </param>
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/// <param name="actualUuid"> The <seealso cref="UUID"/> of the actual serialized ATN which is
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/// currently being deserialized. </param>
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/// <returns> {@code true} if the {@code actualUuid} value represents a
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/// serialized ATN at or after the feature identified by {@code feature} was
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/// introduced; otherwise, {@code false}. </returns>
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virtual bool isFeatureSupported(const Guid &feature, const Guid &actualUuid);
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void markPrecedenceDecisions(const ATN &atn);
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Ref<LexerAction> lexerActionFactory(LexerActionType type, int data1, int data2);
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private:
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/// This is the earliest supported serialized UUID.
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static Guid BASE_SERIALIZED_UUID();
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/// This UUID indicates an extension of <seealso cref="BASE_SERIALIZED_UUID"/> for the
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/// addition of precedence predicates.
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static Guid ADDED_PRECEDENCE_TRANSITIONS();
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/**
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* This UUID indicates an extension of ADDED_PRECEDENCE_TRANSITIONS
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* for the addition of lexer actions encoded as a sequence of
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* LexerAction instances.
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*/
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static Guid ADDED_LEXER_ACTIONS();
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/**
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* This UUID indicates the serialized ATN contains two sets of
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* IntervalSets, where the second set's values are encoded as
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* 32-bit integers to support the full Unicode SMP range up to U+10FFFF.
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*/
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static Guid ADDED_UNICODE_SMP();
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/// This list contains all of the currently supported UUIDs, ordered by when
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/// the feature first appeared in this branch.
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static std::vector<Guid>& SUPPORTED_UUIDS();
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ATNDeserializationOptions deserializationOptions;
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};
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} // namespace atn
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} // namespace antlr4
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