Application: gvSIG desktop

package org.gvsig.expressionevaluator.impl;

import java.net.URI;

import org.gvsig.expressionevaluator.Code;

import org.gvsig.expressionevaluator.ExpressionEvaluatorLocator;

import org.gvsig.expressionevaluator.ExpressionEvaluatorManager;

import org.gvsig.expressionevaluator.ExpressionRuntimeException;

import org.gvsig.tools.script.Script;

/**

 *

 * @author jjdelcerro

 */

public class SimpleScript implements Script {

    private final String name;

    private String source;

    private DefaultInterpreter interpreter;

    public SimpleScript(String name, String source) {

        this.name = name;

        this.setCode(source);

    }

    @Override

    public String getName() {

        return this.name;

    }

    @Override

    public String getCode() {

        return this.source;

    }

    @Override

    public String getTypeName() {

        return "COSA";

    }

    @Override

    public URI getURI() {

        return null;

    }

    @Override

    public void put(String name, Object value) {

        DefaultSymbolTable symbolTable = (DefaultSymbolTable) this.interpreter.getSymbolTable();

        symbolTable.setVar(name, value);

    }

    @Override

    public Object invokeFunction(String funcname, Object[] args) throws NoSuchMethodException {

        if( !this.interpreter.hasFunction(funcname) ) {

            throw new NoSuchMethodException(funcname);

        }

        try {

            return this.interpreter.call(funcname, args);

        } catch (Exception ex) {

            throw new ExpressionRuntimeException(this.interpreter.getCurrentCode(),"Error calling funcion '"+funcname+"'.", ex);

        }

    }

    @Override

    public final void setCode(String source) {

        this.source = source;

        ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager();

        this.interpreter = new DefaultInterpreter();

        Code code = manager.compile(source);

        this.interpreter.run(code);

    }

}