From 6bf4b90c90f15f4ab60833bddf5b5756d1a6b1f6 Mon Sep 17 00:00:00 2001 From: Elizabeth Alexander Hunt Date: Thu, 2 Jul 2026 11:55:17 -0700 Subject: Init --- .../cs5300/project-two/scanner/ScanStream.java | 36 ++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 Homework/cs5300/project-two/scanner/ScanStream.java (limited to 'Homework/cs5300/project-two/scanner/ScanStream.java') diff --git a/Homework/cs5300/project-two/scanner/ScanStream.java b/Homework/cs5300/project-two/scanner/ScanStream.java new file mode 100644 index 0000000..04cff68 --- /dev/null +++ b/Homework/cs5300/project-two/scanner/ScanStream.java @@ -0,0 +1,36 @@ +/* + * DO NOT MODIFY THIS FILE + */ +package scanner; + +/** + * Abstracts a stream reader that reads one byte at a time with possible + * rollback. + * + * Do not modify this file. + */ +public final class ScanStream { + + final private byte[] data; + private int i; + + public ScanStream(byte[] data) { + this.data = data; + i = 0; + } + + public boolean eof() { + return i >= data.length; + } + + public char next() { + if (eof()) { + throw new RuntimeException("EOF reached"); + } + return (char) data[i++]; + } + + void rollback() { + --i; + } +} -- cgit v1.3