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Main.java
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Main.java
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/*
* Copyright 2017 Austin Lehman
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.cali;
/**
* Main class implements program entry point for command line
* usage.
* @author austin
*/
public class Main {
/**
* Command line program entry point.
* @param args is an array of Strings with the command line arguments.
* @throws Exception on failure.
*/
public static void main(String[] args) throws Exception {
if (args.length == 0) {
printUsage();
System.out.println("\nError, incorrect number of arguments. Expecting script file name.");
} else {
// Create a new Cali engine.
Engine eng = new Engine();
// Sets debug output to true.
//eng.setDebug(true);
// Parse the provided file name.
eng.parseFile(args[0]);
// Prints the full parsed abastract syntax tree of all the sources.
//System.out.println(eng.toString());
// Attempt to run the code.
eng.run();
}
}
/**
* Prints the application usage to standard output.
*/
public static void printUsage() {
String rstr = "";
rstr += "Cali-Lang Version " + Universe.getCaliVersion() + "\n";
rstr += "Copyright 2017 Austin Lehman\n";
rstr += "Apache License Version 2\n";
System.out.println(rstr);
}
}