# HG changeset patch
# User Jaroslav Tulach <jaroslav.tulach@apidesign.org>
# Date 1348567863 -7200
# Node ID dcb98731b000c2bd91dc5aba0bf3d8ca925e8eeb
# Parent  81ad7a739fed9657c30a8128153df8c8dbfc8c02
Main method to compile some classes

diff -r 81ad7a739fed -r dcb98731b000 vm/pom.xml
--- a/vm/pom.xml	Tue Sep 25 09:55:34 2012 +0200
+++ b/vm/pom.xml	Tue Sep 25 12:11:03 2012 +0200
@@ -45,18 +45,29 @@
       <connection>scm:hg:http://source.apidesign.org/hg/bck2brwsr</connection>
       <url>http://source.apidesign.org/hg/bck2brwsr</url>
   </scm>
-    <build>
-        <plugins>
-            <plugin>
-                <groupId>com.mycila.maven-license-plugin</groupId>
-                <artifactId>maven-license-plugin</artifactId>
-                <version>1.9.0</version>
-                <configuration>
-                    <header>src/header.txt</header>
-                </configuration>
-            </plugin>
-        </plugins>
-    </build>
+  <build>
+      <plugins>
+          <plugin>
+              <groupId>org.apache.maven.plugins</groupId>
+              <artifactId>maven-jar-plugin</artifactId>
+              <configuration>
+                  <archive>
+                      <manifest>
+                          <mainClass>org.apidesign.vm4brwsr.GenJS</mainClass>
+                      </manifest>
+                  </archive>
+              </configuration>
+          </plugin>
+          <plugin>
+              <groupId>com.mycila.maven-license-plugin</groupId>
+              <artifactId>maven-license-plugin</artifactId>
+              <version>1.9.0</version>
+              <configuration>
+                  <header>src/header.txt</header>
+              </configuration>
+          </plugin>
+      </plugins>
+  </build>
   <dependencies>
     <dependency>
       <groupId>org.testng</groupId>
diff -r 81ad7a739fed -r dcb98731b000 vm/src/main/java/org/apidesign/vm4brwsr/GenJS.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vm/src/main/java/org/apidesign/vm4brwsr/GenJS.java	Tue Sep 25 12:11:03 2012 +0200
@@ -0,0 +1,76 @@
+package org.apidesign.vm4brwsr;
+
+import java.io.BufferedWriter;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.Writer;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Set;
+
+/** Generator of JavaScript from bytecode of classes on classpath of the VM.
+ *
+ * @author Jaroslav Tulach <jtulach@netbeans.org>
+ */
+final class GenJS {
+    private GenJS() {}
+    
+    public static void main(String... args) throws IOException {
+        if (args.length < 2) {
+            System.err.println("Usage: java -cp ... -jar ... <file_to_generate_js_code_to> java/lang/Class org/your/App ...");
+            return;
+        }
+        
+        Writer w = new BufferedWriter(new FileWriter(args[0]));
+        List<String> classes = Arrays.asList(args).subList(1, args.length);
+        compile(w, classes);
+        w.close();
+    }
+    
+    static void compile(Appendable out, String... names) throws IOException {
+        compile(out, Arrays.asList(names));
+    }
+    static void compile(Appendable out, List<String> names) throws IOException {
+        Set<String> processed = new HashSet<String>();
+        LinkedList<String> toProcess = new LinkedList<String>(names);
+        for (;;) {
+            toProcess.removeAll(processed);
+            if (toProcess.isEmpty()) {
+                break;
+            }
+            String name = toProcess.getFirst();
+            processed.add(name);
+            if (name.startsWith("java/") && !name.equals("java/lang/Object")) {
+                continue;
+            }
+            InputStream is = GenJS.class.getClassLoader().getResourceAsStream(name + ".class");
+            if (is == null) {
+                throw new IOException("Can't find class " + name); 
+            }
+            try {
+                ByteCodeToJavaScript.compile(is, out, toProcess);
+            } catch (RuntimeException ex) {
+                if (out instanceof CharSequence) {
+                    CharSequence seq = (CharSequence)out;
+                    int lastBlock = seq.length();
+                    while (lastBlock-- >= 0) {
+                        if (seq.charAt(lastBlock) == '{') {
+                            break;
+                        }
+                    }
+                    throw new IOException("Error while compiling " + name + "\n" 
+                        + seq.subSequence(lastBlock + 1, seq.length()), ex
+                    );
+                } else {
+                    throw new IOException("Error while compiling " + name + "\n" 
+                        + out, ex
+                    );
+                }
+            }
+        }
+    }
+    
+}
diff -r 81ad7a739fed -r dcb98731b000 vm/src/test/java/org/apidesign/vm4brwsr/StaticMethodTest.java
--- a/vm/src/test/java/org/apidesign/vm4brwsr/StaticMethodTest.java	Tue Sep 25 09:55:34 2012 +0200
+++ b/vm/src/test/java/org/apidesign/vm4brwsr/StaticMethodTest.java	Tue Sep 25 12:11:03 2012 +0200
@@ -17,15 +17,7 @@
 */
 package org.apidesign.vm4brwsr;
 
-import org.apidesign.vm4brwsr.ByteCodeToJavaScript;
 import java.io.IOException;
-import java.io.InputStream;
-import java.util.Arrays;
-import java.util.HashSet;
-import java.util.Iterator;
-import java.util.LinkedList;
-import java.util.Set;
-import java.util.TreeSet;
 import javax.script.Invocable;
 import javax.script.ScriptEngine;
 import javax.script.ScriptEngineManager;
@@ -162,32 +154,7 @@
         if (sb == null) {
             sb = new StringBuilder();
         }
-        Set<String> processed = new HashSet<String>();
-
-        LinkedList<String> toProcess = new LinkedList<String>(Arrays.asList(names));
-        for (;;) {
-            toProcess.removeAll(processed);
-            if (toProcess.isEmpty()) {
-                break;
-            }
-            String name = toProcess.getFirst();
-            processed.add(name);
-            if (name.startsWith("java/") && !name.equals("java/lang/Object")) {
-                continue;
-            }
-            InputStream is = StaticMethodTest.class.getClassLoader().getResourceAsStream(name + ".class");
-            assertNotNull(is, "Class file found");
-            try {
-                ByteCodeToJavaScript.compile(is, sb, toProcess);
-            } catch (RuntimeException ex) {
-                int lastBlock = sb.lastIndexOf("{");
-                throw new IllegalStateException(
-                    "Error while compiling " + name + "\n" + 
-                    sb.substring(0, sb.length()), 
-                    ex
-                );
-            }
-        }
+        GenJS.compile(sb, names);
         ScriptEngineManager sem = new ScriptEngineManager();
         ScriptEngine js = sem.getEngineByExtension("js");
         try {