/**
* Copyright (c) 2012-2016 André Bargull
* Alle Rechte vorbehalten / All Rights Reserved. Use is subject to license terms.
*
* <https://github.com/anba/es6draft>
*/
package com.github.anba.es6draft.repl.global;
import static com.github.anba.es6draft.repl.global.SharedFunctions.absolutePath;
import static com.github.anba.es6draft.repl.global.SharedFunctions.loadScript;
import static com.github.anba.es6draft.repl.global.SharedFunctions.readFile;
import java.io.PrintWriter;
import java.nio.file.Path;
import java.nio.file.Paths;
import com.github.anba.es6draft.runtime.ExecutionContext;
import com.github.anba.es6draft.runtime.internal.Properties.Function;
import com.github.anba.es6draft.runtime.internal.Strings;
/**
* Standard shell functions.
*/
public final class BaseShellFunctions {
/**
* shell-function: {@code readline()}
*
* @param cx
* the execution context
* @return the read line from stdin
*/
@Function(name = "readline", arity = 0)
public String readline(ExecutionContext cx) {
return cx.getRuntimeContext().getConsole().readLine();
}
/**
* shell-function: {@code print(message)}
*
* @param cx
* the execution context
* @param messages
* the string to print
*/
@Function(name = "print", arity = 1)
public void print(ExecutionContext cx, String... messages) {
PrintWriter writer = cx.getRuntimeContext().getConsole().writer();
writer.println(Strings.concatWith(' ', messages));
}
/**
* shell-function: {@code load(filename)}
*
* @param cx
* the execution context
* @param filename
* the file to load
*/
@Function(name = "load", arity = 1)
public void load(ExecutionContext cx, String filename) {
Path file = Paths.get(filename);
loadScript(cx, file, absolutePath(cx, file));
}
/**
* shell-function: {@code read(filename)}
*
* @param cx
* the execution context
* @param filename
* the file to load
* @return the file content
*/
@Function(name = "read", arity = 1)
public String read(ExecutionContext cx, String filename) {
Path file = Paths.get(filename);
return readFile(cx, file, absolutePath(cx, file));
}
/**
* shell-function: {@code quit()}
*/
@Function(name = "quit", arity = 0)
public void quit() {
throw new StopExecutionException(StopExecutionException.Reason.Quit);
}
}