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/*******************************************************************************
* Copyright (c) 2018 protos software gmbh (http://www.protos.de).
* All rights reserved.
*
* This program and the accompanying materials are made
* available under the terms of the Eclipse Public License 2.0
* which is available at https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* CONTRIBUTORS:
* Jan Belle (initial contribution)
*
*******************************************************************************/
package org.eclipse.etrice.generator.base.args;
import java.util.Arrays;
import java.util.HashMap;
import java.util.StringJoiner;
/**
* Encapsulates a set of arguments.
*/
public class Arguments {
private Options options;
private HashMap<String, Object> option2Arg;
/**
* Creates a new set of arguments initialized to their default values.
*
* @param options the options to create the arguments from
*/
public Arguments(Options options) {
this.options = options;
option2Arg = new HashMap<>();
for(Option<?> option: options) {
option2Arg.put(option.getName(), option.getDefaultValue());
}
}
/**
* Queries an argument by its name.
*
* @param name the name of the option
* @return the argument
*/
public Object get(String name) throws IllegalArgumentException {
Object value = option2Arg.get(name);
if(value == null) {
throw new IllegalArgumentException("option " + name + " not recognized");
}
return value;
}
/**
* Queries an argument.
*
* @param option the option of the argument
* @return the argument
*/
public <T> T get(Option<T> option) throws IllegalArgumentException {
return option.getType().cast(get(option.getName()));
}
/**
* Sets an argument to the passed value.
*
* @param name the name of the option
* @param value the value to be set
*/
public void set(String name, Object value) throws IllegalArgumentException {
Option<?> opt = options.get(name);
if(!opt.getType().isInstance(value)) {
throw new IllegalArgumentException("value " + value.toString() + " is not assignable to Option " + opt.toString());
}
option2Arg.put(name, value);
}
/**
* Sets an argument to the passed value.
*
* @param option the option
* @param value the value to be set
*/
public <T> void set(Option<T> option, T value) throws IllegalArgumentException {
set(option.getName(), value);
}
/**
* Returns the options for the arguments.
*
* @return options the options
*/
public Options getOptions() {
return options;
}
@Override
public String toString() {
StringJoiner joiner = new StringJoiner(", ");
for(Option<?> opt: options) {
joiner.add(argToString(opt));
}
return joiner.toString();
}
private String argToString(Option<?> opt) {
String result = opt.getName() + "=";
Object obj = option2Arg.get(opt.getName());
if(opt.getType().isArray()) {
Object[] objArr = (Object[]) obj;
result += Arrays.toString(objArr);
}
else {
result += obj.toString();
}
return result;
}
}
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