EvalResult.java

/**
 *  Copyright (c) 2014 by JP Moresmau
 * This code is made available under the terms of the Eclipse Public License,
 * version 1.0 (EPL). See http://www.eclipse.org/legal/epl-v10.html
 */
package net.sf.eclipsefp.haskell.buildwrapper.types;

import net.sf.eclipsefp.haskell.util.LangUtil;

import org.json.JSONObject;

/**
 * The result of an evaluation in GHC
 * @author JP Moresmau
 *
 */
public class EvalResult {
	/**
	 * the type of the result, if any
	 */
	private String type;
	/**
	 * the output of the result, if any
	 */
	private String result;
	/**
	 * the error message, if any
	 */
	private String error;
	
	/**
	 * 
	 */
	public EvalResult() {

	}
	
	public EvalResult(JSONObject obj) {
		if (!obj.isNull("t")){
			type=obj.optString("t");
		}
		if (!obj.isNull("r")){
			result=unshow(obj.optString("r"));
		}
		if (!obj.isNull("e")){
			error=obj.optString("e");
		}
	}

	/**
	 * undoes what shows does for strings
	 * @param s
	 * @return
	 */
	private static String unshow(String s){
		if (s==null || s.trim().length()==0){
			return s;
		}
		String uq=LangUtil.unquote(s);
		return uq.replace("\\\\","\\").replace("\\n", "\n").replace("\\\"", "\"");
		
	}
	
	public String getType() {
		return type;
	}

	public void setType(String type) {
		this.type = type;
	}

	public String getResult() {
		return result;
	}

	public void setResult(String result) {
		this.result = result;
	}

	public String getError() {
		return error;
	}

	public void setError(String error) {
		this.error = error;
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((error == null) ? 0 : error.hashCode());
		result = prime * result
				+ ((this.result == null) ? 0 : this.result.hashCode());
		result = prime * result + ((type == null) ? 0 : type.hashCode());
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		EvalResult other = (EvalResult) obj;
		if (error == null) {
			if (other.error != null)
				return false;
		} else if (!error.equals(other.error))
			return false;
		if (result == null) {
			if (other.result != null)
				return false;
		} else if (!result.equals(other.result))
			return false;
		if (type == null) {
			if (other.type != null)
				return false;
		} else if (!type.equals(other.type))
			return false;
		return true;
	}

}