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authorCliff Click <cliffc@acm.org>2026-10-03 14:03:48 -0700
committerCliff Click <cliffc@acm.org>2026-10-04 13:30:41 -0700
commit9a5ca20d2537179f3a8e01762c8db6b52a4db2d9 (patch)
tree6fe0ab1ae48b05fb6a6e98f73c4dfdc52aec5c5d /src/test/java/com/seaofnodes/simple/BrainFuckTest.java
parent63fe16fa2ea123b8ce2f976662b0a6d09f352868 (diff)
downloadSimple-linear-chapter17a.tar.gz
Simple-linear-chapter17a.zip
Chapter 17a: Mutability and Read-Only Viewslinear-chapter17a
Diffstat (limited to 'src/test/java/com/seaofnodes/simple/BrainFuckTest.java')
-rw-r--r--src/test/java/com/seaofnodes/simple/BrainFuckTest.java80
1 files changed, 0 insertions, 80 deletions
diff --git a/src/test/java/com/seaofnodes/simple/BrainFuckTest.java b/src/test/java/com/seaofnodes/simple/BrainFuckTest.java
deleted file mode 100644
index 29ef8732..00000000
--- a/src/test/java/com/seaofnodes/simple/BrainFuckTest.java
+++ /dev/null
@@ -1,80 +0,0 @@
-package com.seaofnodes.simple;
-
-import com.seaofnodes.simple.evaluator.Evaluator;
-import com.seaofnodes.simple.node.StopNode;
-import org.junit.Test;
-import org.junit.Ignore;
-
-import java.nio.charset.StandardCharsets;
-
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.fail;
-
-public class BrainFuckTest {
-
- @Test
- public void testBrainfuck() {
- var program = "++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++..+++.>>.<-.<.+++.------.--------.>>+.>++.".getBytes(StandardCharsets.UTF_8);
- var encoded = new StringBuilder("u8[] program = new u8[").append(program.length).append("];");
- for (int i = 0; i < program.length; i++) {
- int value = program[i] & 0xFF;
- encoded.append("program[").append(i).append("] = ").append(value).append(";");
- }
-
- Parser parser = new Parser(
- encoded + """
-int pc = 0;
-int d = 0;
-u8[] data = new u8[100];
-u8[] output = new u8[0];
-
-while (pc < program#) {
- int command = program[pc];
- if (command == 62) {
- d = d + 1;
- } else if (command == 60) {
- d = d - 1;
- } else if (command == 43) {
- data[d] = data[d] + 1;
- } else if (command == 45) {
- data[d] = data[d] - 1;
- } else if (command == 46) {
- u8[] old = output;
- output = new u8[output# + 1];
- int i = 0;
- while (i < old#) {
- output[i] = old[i];
- i = i + 1;
- }
- output[i] = data[d];
- } else if (command == 44) {
- data[d] = 42;
- } else if (command == 91) {
- if (data[d] == 0) {
- int d = 1;
- while (d > 0) {
- pc = pc + 1;
- command = program[pc];
- if (command == 91) d = d + 1;
- if (command == 93) d = d - 1;
- }
- }
- } else if (command == 93) {
- if (data[d] != 0) {
- int d = 1;
- while (d > 0) {
- pc = pc - 1;
- command = program[pc];
- if (command == 93) d = d + 1;
- if (command == 91) d = d - 1;
- }
- }
- }
- pc = pc + 1;
-}
-return output;
- """);
- StopNode stop = parser.parse().iterate();
- assertEquals("Hello World!\n", Evaluator.evaluate(stop, 0, 10000).toString());
- }
-}