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/***
* ASM examples: examples showing how ASM can be used
* Copyright (c) 2000-2011 INRIA, France Telecom
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.objectweb.asm.jbfc;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.PrintStream;
import java.io.StringReader;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import org.objectweb.asm.ClassWriter;
/**
* A naive implementation of compiler for Brain**** language.
* http://www.muppetlabs.com/~breadbox/bf/ *
*
* @author Eugene Kuleshov
*/
public class BFCompilerTest {
private BFCompiler bc;
private ClassWriter cw;
public static void main(String[] args) throws Throwable {
new BFCompilerTest().testCompileHelloWorld();
new BFCompilerTest().testCompileEcho();
new BFCompilerTest().testCompileYaPi();
new BFCompilerTest().testCompileTest1();
}
public BFCompilerTest() throws Exception {
bc = new BFCompiler();
cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
}
public void testCompileHelloWorld() throws Throwable {
assertEquals(
"Hello World!\n",
execute("Hello",
">+++++++++[<++++++++>-]<.>+++++++[<++++>-]<+.+++++++..+++.[-]>++++++++[<++++>-]"
+ "<.#>+++++++++++[<+++++>-]<.>++++++++[<+++>-]<.+++.------.--------.[-]>++++++++["
+ "<++++>-]<+.[-]++++++++++.", ""));
}
public void testCompileEcho() throws Throwable {
assertEquals("AAA", execute("Echo", ",+[-.,+]", "AAA"));
}
public void testCompileYaPi() throws Throwable {
assertEquals("3.1415926\n", execute("YaPi",
">+++++[<+++++++++>-]>>>>>>\r\n\r\n+++++ +++ (7 "
+ "digits)\r\n\r\n[<<+>++++++++++>-]<<+>>+++<[->>+"
+ "<-[>>>]>[[<+>-]>+>>]<<<<<]>[-]>[-]>[<+>-]<[>+<["
+ "-\r\n>>>>>>>+<<<<<<<]>[->+>>>>>>+<<<<<<<]>>>>++"
+ ">>-]>[-]<<<[<<<<<<<]<[->>>>>[>>>>>>>]<\r\n<<<<<"
+ "<[>>>>[-]>>>>>>>[-<<<<<<<+>>>>>>>]<<<<<<<<[<<++"
+ "++++++++>>-]>[<<<<[>+>>+<<<-\r\n]>>>[<<<+>>>-]>"
+ "-]<<<<[>>++>+<<<-]>>->[<<<+>>>-]>[-]<<<[->>+<-["
+ ">>>]>[[<+>-]>+>>]<\r\n<<<<]>[-]<<<<<<<<<]>+>>>>"
+ ">>->>>>[<<<<<<<<+>>>>>>>>-]<<<<<<<[-]++++++++++"
+ "<[->>+<-\r\n[>>>]>[[<+>-]>+>>]<<<<<]>[-]>[>>>>>"
+ "+<<<<<-]>[<+>>+<-]>[<+>-]<<<+<+>>[-[-[-[-[-[-\r"
+ "\n[-[-[-<->[-<+<->>[<<+>>[-]]]]]]]]]]]]<[+++++["
+ "<<<<++++++++>>>>>++++++++<-]>+<<<<-\r\n>>[>+>-<"
+ "<<<<+++++++++>>>-]<<<<[>>>>>>+<<<<<<-]<[>>>>>>>"
+ ".<<<<<<<<[+.[-]]>>]>[<]<+\r\n>>>[<.>-]<[-]>>>>>"
+ "[-]<[>>[<<<<<<<+>>>>>>>-]<<-]]>>[-]>+<<<<[-]<]+"
+ "+++++++++.", ""));
}
public void testCompileTest1() throws Throwable {
assertEquals("H\n", execute("Test1",
"[]++++++++++[>++++++++++++++++++>+++++++>+<<<-]A;?@![#>>"
+ "+<<]>[>++<[-]]>.>.", ""));
}
public static void assertEquals(String s1, String s2) {
if (!s1.equals(s2)) {
System.out.println("ERROR: expected '" + s1 + "' but got '" + s2
+ "'");
}
}
private String execute(final String name, final String code,
final String input) throws Throwable {
bc.compile(new StringReader(code), name, name, cw);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
InputStream is = System.in;
PrintStream os = System.out;
System.setIn(new ByteArrayInputStream(input.getBytes()));
System.setOut(new PrintStream(bos));
try {
TestClassLoader cl = new TestClassLoader(getClass()
.getClassLoader(), name, cw.toByteArray());
Class<?> c = cl.loadClass(name);
Method m = c.getDeclaredMethod("main",
new Class<?>[] { String[].class });
m.invoke(null, new Object[] { new String[0] });
} catch (InvocationTargetException ex) {
throw ex.getCause();
} finally {
System.setIn(is);
System.setOut(os);
}
String output = new String(bos.toByteArray(), "ASCII");
System.out
.println(code + " WITH INPUT '" + input + "' GIVES " + output);
return output;
}
private static final class TestClassLoader extends ClassLoader {
private final String className;
private final ClassLoader cl;
private final byte[] bytecode;
public TestClassLoader(final ClassLoader cl, final String className,
final byte[] bytecode) {
super();
this.cl = cl;
this.className = className;
this.bytecode = bytecode;
}
@Override
public Class<?> loadClass(final String name)
throws ClassNotFoundException {
if (className.equals(name)) {
return super.defineClass(className, bytecode, 0,
bytecode.length);
}
return cl.loadClass(name);
}
}
}
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