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    • gherkin.AstNode Maven / Gradle / Ivy

    The newest version!
    package gherkin;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import static gherkin.Parser.RuleType;
import static gherkin.Parser.TokenType;

public class AstNode {
    private final Map> subItems = new HashMap>();
    public final RuleType ruleType;

    public AstNode(RuleType ruleType) {
        this.ruleType = ruleType;
    }

    public void add(RuleType ruleType, Object obj) {
        List items = subItems.get(ruleType);
        if (items == null) {
            items = new ArrayList();
            subItems.put(ruleType, items);
        }
        items.add(obj);
    }

    public  T getSingle(RuleType ruleType, T defaultResult) {
        List items = getItems(ruleType);
        return (T) (items.isEmpty() ? defaultResult : items.get(0));
    }

    public  List getItems(RuleType ruleType) {
        List items = (List) subItems.get(ruleType);
        if (items == null) {
            return Collections.emptyList();
        }
        return items;
    }

    public Token getToken(TokenType tokenType) {
        RuleType ruleType = RuleType.cast(tokenType);
        return getSingle(ruleType, new Token(null, null));
    }

    public List getTokens(TokenType tokenType) {
        return getItems(RuleType.cast(tokenType));
    }
}
    
    
    
    

    




    
    
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