Package java_cup.runtime
Class symbol
- java.lang.Object
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- java_cup.runtime.symbol
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- Direct Known Subclasses:
token
public class symbol extends java.lang.Object
This class represents a (terminal or non-terminal) symbol that, among other things can be placed on the parse stack. Symbols are used to keep track of state on the parse stack. The symbol currently on top of the stack contains the current state in the parse_state field. In addition to the parse_state field, symbols also maintain a record of the symbol number that they represent in the sym field. Finally, symbols are used contain to any attributes used by semantic action (this is done via fields added in subclasses -- see for example, int_token and str_token).
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Field Summary
Fields Modifier and Type Field Description int
parse_state
The parse state to be recorded on the parse stack with this symbol.int
sym
The symbol number of the terminal or non terminal being represented
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