40 lines
1.1 KiB
Java
40 lines
1.1 KiB
Java
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package com.craftinginterpreters.lox;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.nio.charset.Charset;
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import java.nio.file.Files;
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import java.nio.file.Paths;
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import java.util.List;
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public class Lox {
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public static void main(String[] args) throws IOException {
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if (args.length > 1) {
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System.out.println("Usage: jlox [script]");
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System.exit(64);
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} else if (args.length == 1) {
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runFile(args[0]);
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} else {
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runPrompt();
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}
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}
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private static void runFile(String path) throws IOException {
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byte[] bytes =Files.readAllBytes(Paths.get(path));
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run(new String(bytes, Charset.defaultCharset()));
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}
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private static void runPrompt() throws IOException {
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InputStreamReader input = new InputStreamReader(System.in);
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BufferedReader reader = new BufferedReader(input);
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for (;;) {
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System.out.print("> ");
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String line = reader.readLine();
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if (line == null) break;
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run(line);
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}
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}
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}
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