Alachisoft.NCache.Parser.Reduction Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of nc-parser Show documentation
Internal package of Alachisoft.
There is a newer version: 5.3.3
package Alachisoft.NCache.Parser;

// C# Translation of GoldParser, by Marcus Klimstra .
// Based on GOLDParser by Devin Cook .

/**
 * This class is used by the engine to hold a reduced rule. Rather than contain
 * a list of Symbols, a reduction contains a list of Tokens corresponding to the
 * the rule it represents. This class is important since it is used to store the
 * actual source program parsed by the Engine.
 */
public class Reduction {
    private java.util.ArrayList m_tokens;
    private Rule m_parentRule;
    private Object m_tag;

    /* constructor */

    /**
     * Creates a new Reduction.
     */
    public Reduction() {
        m_tokens = new java.util.ArrayList();
    }

    /* properties */

    /**
     * Returns an ArrayList containing the Tokens in this reduction.
     */
    public final java.util.ArrayList getTokens() {
        return m_tokens;
    }

    /**
     * Returns the Rule that this Reduction represents.
     */
    public final Rule getParentRule() {
        return m_parentRule;
    }

    public final void setParentRule(Rule value) {
        m_parentRule = value;
    }

    /**
     * This is a general purpose field that can be used at the developer's leisure.
     */
    public final Object getTag() {
        return m_tag;
    }

    public final void setTag(Object value) {
        m_tag = value;
    }

    /* public methods */

    /**
     * Returns the token with the specified index.
     */
    public final Token GetToken(int p_index) {
        return (Token) m_tokens.get(p_index);
    }

    /**
     * Returns a string-representation of this Reduction.
     */
    @Override
    public String toString() {
        return m_parentRule.toString();
    }

    /**
     * Makes the IGoldVisitor visit this Reduction.
     * See the GoldTest sample project.
     */
    public final void Accept(IGoldVisitor p_visitor) {
        p_visitor.Visit(this);
    }

    /**
     * Makes the IGoldVisitor visit the children of this
     * Reduction.
     * See the GoldTest sample project.
     */
    public final void ChildrenAccept(IGoldVisitor p_visitor) {
        //Huma:
        Token token;
        Object tempVar = new Object();
        for (Object tokenObj : m_tokens) {
            token = (Token) tokenObj;
            if (token.getKind() == SymbolType.NonTerminal)
                tempVar = token.getData();
            {
                ((Reduction) ((tempVar instanceof Reduction) ? tempVar : null)).Accept(p_visitor);
            }
        }
//		for (Token token : m_tokens) {
//			if (token.getKind() == SymbolType.NonTerminal)
//				Object tempVar = token.getData(); {
//				((Reduction)((tempVar instanceof Reduction) ? tempVar : null)).Accept(p_visitor);
//				}
//		}
    }

    /* internal methods */

    /**
     *
     */
    public final void AddToken(Token p_token) {
        m_tokens.add(p_token);
    }
}