updated docs and demo

README.md

@@ -63,15 +63,30 @@ Notes on the implementation
 * Math functions and string functions are implemented in the jvmBasic runtime jar "jvmbasicrt.jar"
 * BASIC types are implemented by the class "Value" in jvmbasicrt.jar
 
-Getting Started
+Running an example
 ---------
 
-Getting started
+* build jvmBASIC: `mvn clean package install`
+* use the script `run_bas.sh` to run an example:
+
+<pre>
+sh run_bas.sh hellojvmBASIC.bas
+</pre>
+
+The output should look very much like:
+<pre>
+shrek:jvmBASIC tom$ sh run_bas.sh hellojvmBASIC.bas 
+Running BASIC file hellojvmBASIC.bas
+khubla.com jvmBASIC Compiler
+Compiling: /Users/tom/projects/jvmBASIC/hellojvmBASIC.bas
+added manifest
+adding: hellojvmBASIC.class(in = 1402) (out= 740)(deflated 47%)
+19:17:44.698 [main] INFO com.khubla.jvmbasic.jvmbasicrt.ExecutionContext - pushing String: '"hello from jvmBASIC"'
+19:17:44.701 [main] INFO com.khubla.jvmbasic.jvmbasicrt.ExecutionContext - popping hello from jvmBASIC
+hello from jvmBASIC
+shrek:jvmBASIC tom$ 
+</pre>
 
-* cd to the "demo" directory
-* Optionally edit the BASIC file "bottlesofbeer.bas"
-* run "update.sh" to copy the jvmBasicc.jar and jvmBasicrt.jar files into the demo directory
-* run "run.sh" to compile the BAS file, produce a jar and run the jar
 
 Using jvmBASICC
 ---------

hellojvmBASIC.bas

@@ -0,0 +1,2 @@
+10 REM hello world
+20 PRINT "hello from jvmBASIC"

run_bas.sh

@@ -0,0 +1,35 @@
+#!/bin/sh
+
+BASFILE=$1
+WORKDIR=$BASFILE.work
+
+CLASSNAME=`echo $BASFILE | cut -d. -f1`
+
+RUNTIME_JAR=jvmbasicrt/target/jvmbasicrt.jar
+COMPILER_JAR=jvmbasicc/target/jvmbasicc.jar
+MANIFEST=jvmbasicc/src/main/resources/manifest.txt
+
+echo Running BASIC file $BASFILE
+
+rm -rf $WORKDIR
+mkdir $WORKDIR
+
+cp $RUNTIME_JAR $WORKDIR/
+cp $COMPILER_JAR $WORKDIR/
+
+cd $WORKDIR
+
+# compile the .bas to a class
+java -jar jvmbasicc.jar -file ../$BASFILE
+
+# make a jar
+jar cvfme $CLASSNAME.jar ../$MANIFEST $CLASSNAME $CLASSNAME.class 
+
+#jar tf print.jar
+#javap -p print
+
+# run the jar
+java -jar $CLASSNAME.jar
+
+cd ..
+