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30 lines
1,014 B
C++
30 lines
1,014 B
C++
#ifndef LALR_PARSERTRANSITION_HPP_INCLUDED
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#define LALR_PARSERTRANSITION_HPP_INCLUDED
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#include "TransitionType.hpp"
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namespace lalr
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{
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class ParserState;
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class ParserSymbol;
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/**
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// A transition in a parser's state machine.
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*/
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class ParserTransition
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{
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public:
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const ParserSymbol* symbol; ///< The symbol that the transition is taken on.
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const ParserState* state; ///< The state that is transitioned to.
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const ParserSymbol* reduced_symbol; ///< The symbol that is reduced to or null if this isn't a reducing transition.
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int reduced_length; ///< The number of symbols on the right-hand side of the reduced production.
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int precedence; ///< The precedence of the reduce production or 0 for the default precedence or no reduction.
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int action; ///< The index of the action taken on reduce or Action::INVALID_INDEX if there is no action associated with the reduce.
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TransitionType type; ///< The type of transition that this is.
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int index; ///< The index of this transition.
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};
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}
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#endif
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