Added Google Closure compiler to jtalkc and updated Node.js Hello example to use new Smalltalk syntax.

bin/jtalkc

@@ -117,8 +117,10 @@ case "$o" in
       MAIN=Main;;
    K) BASE=$KERNEL;;
    C) BASE=$COMPILER;;
-   o) CLOSURE=true;;
-   O) CLOSUREFULL=true;;
+   o) CLOSURE=true
+      CLOSUREPARTS=true;;
+   O) CLOSURE=true
+      CLOSUREFULL=true;;
    l) LOAD=$OPTARG;;
    L) LOAD="$JTALK/*.js";;
    I) INIT=$INITIALIZER;;
@@ -131,6 +133,20 @@ case "$o" in
 done
 shift $(($OPTIND - 1))
 
+# Check for Closure compiler and Java
+if [ ! -z $CLOSURE ]; then
+  java > /dev/null
+  if [ $? -eq 0 ]; then 
+    if [ ! -f ~/compiler.jar ]; then
+      echo "Can not find Closure compiler at ~/compiler.jar"
+      exit 1
+    fi
+  else
+   echo "java is not installed and is needed for -O or -o (Closure compiler)."
+   exit 1
+  fi
+fi
+
 # Define our Compiler
 # We need to add extra listed libraries in $LOAD not already in $CANVAS
 OURCOMPILER="$CANVAS $JTALK/js/init.js $JTALK/nodejs/nodecompile.js"
@@ -207,7 +223,7 @@ do
   fi 
 done
 
-if [ ! -z $CLOSURE ]; then
+if [ ! -z $CLOSUREPARTS ]; then
   echo "Compiling all js files using Google closure compiler."
 
   ALLJSFILES="$COMPILED $LIBS"

nodejs/hello/Hello.st

@@ -5,7 +5,7 @@ Object subclass: #Hello
 !Hello class methodsFor: 'main'!
 
 main
-	{'console.log(smalltalk.Hello._new()._hello());'}
+	console log: Hello new hello
 ! ! 
 
 !Hello methodsFor: 'printing'!

nodejs/hello/Makefile

@@ -1,5 +1,5 @@
 Program.js: Hello.st
-	../jtalkc -N -m Hello Hello.st Program
+	../../bin/jtalkc -N -O -m Hello Hello.st Program
 
 run: Program.js
 	./hello

nodejs/hello/README

@@ -1,17 +1,13 @@
-Trivial Node.js example in JTalk:
+Trivial Node.js example in JTalk that also uses the Google Closure compiler
+if ~/compiler.jar is present.
 
 Hello.st - source code.
 hello    - trivial bash script to run resulting program.
-main.js  - small "doit" to actually run code. Will be added by ntalkc.
 Makefile - trivial makefile, read it.
 
-Hello.js - produced when you run make. Contains JTalk + Hello.st + main.js
+Hello.js - produced when you run make. Contains JTalk + Hello.st + a main call
 
 To play, do this:
 
-make run
-
-...or:
-
 make
 ./hello