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package bjc.pratt.commands;
import java.util.Map;
import bjc.pratt.ParserContext;
import bjc.pratt.tokens.Token;
import bjc.utils.parserutils.ParserException;
/**
* Represents a initial command that has a number of 'sub-commands' in the way that Go/Git CLI does.
*
* @author bjcul
*
* @param <K> Token key type
* @param <V> Token value type
* @param <C> Parser context type
*/
public class BranchInitialCommand<K, V, C> implements InitialCommand<K, V, C> {
private Map<K, InitialCommand<K, V, C>> comMap;
/**
* Create a new branch initial command
*
* @param mep The map containing the commands
*/
public BranchInitialCommand(Map<K, InitialCommand<K, V, C>> mep) {
this.comMap = mep;
}
@Override
public CommandResult<K, V> denote(Token<K, V> operator, ParserContext<K, V, C> ctx) throws ParserException {
Token<K, V> curToken = ctx.tokens.current();
ctx.tokens.expect(comMap.keySet());
return comMap.get(curToken.getKey()).denote(curToken, ctx);
}
}
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