From a6e3a38d62985b3aa3e29cec87047dbb4791cbb5 Mon Sep 17 00:00:00 2001
From: Sven Robertz <sven@cs.lth.se>
Date: Tue, 9 Jul 2013 17:07:33 +0200
Subject: [PATCH] nearly complete, but still sketchy, example
---
examples/dynamic/TestHandlerGen.java | 93 ++++++++
examples/dynamic/TestLabcommGen.java | 340 +++++++++++++++++++++++++++
examples/dynamic/runme.sh | 4 +-
3 files changed, 435 insertions(+), 2 deletions(-)
create mode 100644 examples/dynamic/TestHandlerGen.java
create mode 100644 examples/dynamic/TestLabcommGen.java
diff --git a/examples/dynamic/TestHandlerGen.java b/examples/dynamic/TestHandlerGen.java
new file mode 100644
index 0000000..e610276
--- /dev/null
+++ b/examples/dynamic/TestHandlerGen.java
@@ -0,0 +1,93 @@
+import java.io.ByteArrayInputStream;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.nio.CharBuffer;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.Map;
+
+public class TestHandlerGen {
+
+ static class HandlerSrc {
+ private String sampleName;
+ private String param;
+ private String body;
+
+ private final String proto = "public void handle_";
+
+ public HandlerSrc(String sampleName, String param, String body) {
+ this.sampleName = sampleName;
+ this.param = param;
+ this.body = body;
+ }
+
+ public String getSrc() {
+ String res = proto+sampleName+"("+param+")"+body;
+ return res;
+ }
+ }
+
+ /**
+ * @param args
+ */
+ public static void main(String[] args) {
+
+ /* input data: */
+ FileReader fr;
+ int len=0;;
+ CharBuffer buf = CharBuffer.allocate(1024);
+ try {
+ fr = new FileReader(args[0]);
+ len = fr.read(buf);
+ buf.rewind();
+ } catch (Throwable e) {
+ e.printStackTrace();
+ System.exit(1);
+ }
+
+ String srcStr = buf.toString().substring(0, len);
+
+ /* read declarations */
+
+ int pos = 0;
+ while(pos < srcStr.length()) {
+ System.out.println("--------");
+ int nameEnd = srcStr.indexOf(':', pos);
+
+ String name = srcStr.substring(pos,nameEnd);
+ System.out.println("Name="+name);
+
+ pos=nameEnd+1;
+ String par = "";
+ final String handler_decl = "handler(";
+ if(srcStr.startsWith(handler_decl, pos)) {
+ int endPar = srcStr.indexOf(')', pos);
+ par = srcStr.substring(pos+handler_decl.length(), endPar);
+
+ System.out.println("param="+par);
+ pos = endPar+1;
+ } else {
+ System.out.println("expeced handler decl:");
+ }
+ int bodyEnd = srcStr.indexOf('}', pos); // HERE BE DRAGONS! too brittle
+ System.out.println("pos="+pos+", bodyEnd="+bodyEnd);
+ String body = srcStr.substring(pos, bodyEnd+1);
+ pos = bodyEnd+2;
+ System.out.println("body:");
+ System.out.println(body);
+
+ System.out.println("**** generates:");
+
+ HandlerSrc s = new HandlerSrc(name, par, body);
+ System.out.println(s.getSrc());
+ }
+ }
+}
diff --git a/examples/dynamic/TestLabcommGen.java b/examples/dynamic/TestLabcommGen.java
new file mode 100644
index 0000000..85cf0b0
--- /dev/null
+++ b/examples/dynamic/TestLabcommGen.java
@@ -0,0 +1,340 @@
+import java.io.ByteArrayInputStream;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.nio.CharBuffer;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.Map;
+
+import se.lth.control.labcomm.LabCommDecoder;
+import se.lth.control.labcomm.LabCommDecoderChannel;
+import se.lth.control.labcomm.LabCommEncoder;
+import se.lth.control.labcomm.LabCommEncoderChannel;
+import AST.LabCommParser;
+import AST.LabCommScanner;
+import AST.Program;
+import beaver.Parser.Exception;
+
+
+
+public class TestLabcommGen {
+
+ private static final String FOO = "foo";
+ private static final String BAR = "bar";
+
+ static class HandlerSrc {
+ private String sampleName;
+ private String param;
+ private String body;
+
+ private final String proto = "public void handle_";
+
+ public HandlerSrc(String sampleName, String param, String body) {
+ this.sampleName = sampleName;
+ this.param = param;
+ this.body = body;
+ }
+
+ public String getSrc() {
+ String res = proto+sampleName+"("+param+")"+body;
+ return res;
+ }
+ }
+ /**
+ * @param args
+ */
+ public static void main(String[] args) {
+
+ /* input data: */
+ String labcommStr = readLabcommDecl(args[0]);
+ String srcStr = readHandlerDecl(args[1]);
+
+
+ HashMap <String, String> handlers = new HashMap<String, String>();
+
+// handlers.put(FOO, "public void handle_"+FOO+"("+FOO+" value) {\nSystem.out.println(value.x);\nSystem.out.println(value.y);\nSystem.out.println(value.z);}");
+// handlers.put(BAR, "public void handle_"+BAR+"(int value) {System.out.println(value);}");
+
+ generateHandlers(srcStr, handlers);
+ System.out.println("=======*******=========");
+ handlers.keySet();
+
+ for (String n : handlers.keySet()) {
+ System.out.println(n+":");
+ System.out.println(handlers.get(n));
+ }
+
+
+ InRAMCompiler irc = generateCode(labcommStr, handlers);
+
+ if(irc != null) {
+ System.out.println("*** Testing instantiation and invocation of Handler ");
+ dummyTest(irc);
+
+ String tmpFile = args[2];
+ System.out.println("*** Testing writing and reading file "+tmpFile);
+ encodeTest(irc, tmpFile);
+ decodeTest(irc, tmpFile);
+ }
+ }
+ public static void generateHandlers(String srcStr, HashMap<String,String> handlers) {
+ int pos = 0;
+ while(pos < srcStr.length()) {
+ System.out.println("--------");
+ int nameEnd = srcStr.indexOf(':', pos);
+ if(nameEnd <0) break;
+
+ String name = srcStr.substring(pos,nameEnd);
+// System.out.println("Name="+name);
+
+ pos=nameEnd+1;
+ String par = "";
+ final String handler_decl = "handler(";
+ if(srcStr.startsWith(handler_decl, pos)) {
+ int endPar = srcStr.indexOf(')', pos);
+ par = srcStr.substring(pos+handler_decl.length(), endPar);
+// System.out.println("param="+par);
+ pos = endPar+1;
+ } else {
+ System.out.println("expeced handler decl:\n"+srcStr.substring(pos));
+ }
+ int bodyEnd = srcStr.indexOf('}', pos); // HERE BE DRAGONS! too brittle
+ String body = srcStr.substring(pos, bodyEnd+1);
+ pos = bodyEnd+2;
+// System.out.println("body:");
+// System.out.println(body);
+
+// System.out.println("**** generates:");
+
+ HandlerSrc s = new HandlerSrc(name, par, body);
+ final String genSrc = s.getSrc();
+// System.out.println(genSrc);
+ handlers.put(name,genSrc);
+ }
+ }
+
+
+ public static String readHandlerDecl(String decl) {
+ FileReader fr;
+ int len=0;;
+ CharBuffer buf = CharBuffer.allocate(1024);
+ try {
+ fr = new FileReader(decl);
+ len = fr.read(buf);
+ buf.rewind();
+ } catch (Throwable e) {
+ e.printStackTrace();
+ System.exit(1);
+ }
+
+ String srcStr = buf.toString().substring(0, len);
+ return srcStr;
+ }
+
+ private static String readLabcommDecl(String lcfile) {
+ FileReader fr;
+ int len=0;;
+ CharBuffer buf = CharBuffer.allocate(1024);
+ try {
+ fr = new FileReader(lcfile);
+ len = fr.read(buf);
+ // buf.append((char) 0x04);
+ buf.rewind();
+ } catch (Throwable e) {
+ e.printStackTrace();
+ System.exit(1);
+ }
+
+ String labcommStr = buf.toString().substring(0, len-1);
+ return labcommStr;
+ }
+
+ private static void decodeTest(InRAMCompiler irc, String tmpFile) {
+ try {
+ FileInputStream in = new FileInputStream(tmpFile);
+ LabCommDecoderChannel dec = new LabCommDecoderChannel(in);
+
+ Class fc = irc.load(FOO);
+ Class hc = irc.load("gen_"+FOO+"Handler");
+ Class hi = irc.load(FOO+"$Handler");
+
+ Object h = hc.newInstance();
+
+ Method reg = fc.getDeclaredMethod("register", LabCommDecoder.class, hi);
+ reg.invoke(fc, dec, h);
+
+ dec.runOne();
+ in.close();
+ } catch (Throwable e) {
+ e.printStackTrace();
+ }
+
+ }
+ private static void encodeTest(InRAMCompiler irc, String tmpFile) {
+ Class<?> hc;
+ try {
+ hc = irc.load("gen_"+FOO+"Handler");
+ Object h = hc.newInstance();
+ Class fc = irc.load(FOO);
+ Object f = fc.newInstance();
+ Field x = fc.getDeclaredField("x");
+ Field y = fc.getDeclaredField("y");
+ Field z = fc.getDeclaredField("z");
+ x.setInt(f, 10);
+ y.setInt(f, 11);
+ z.setInt(f, 12);
+
+ FileOutputStream out = new FileOutputStream(tmpFile);
+ LabCommEncoderChannel enc = new LabCommEncoderChannel(out);
+ Method reg = fc.getDeclaredMethod("register", LabCommEncoder.class);
+ reg.invoke(fc, enc);
+
+ Method doEncode = fc.getDeclaredMethod("encode", LabCommEncoder.class, fc);
+ doEncode.invoke(fc, enc, f);
+
+ out.close();
+ } catch (Throwable e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ }
+
+ }
+ public static InRAMCompiler generateCode(String lcDecl, HashMap<String, String> handlers) {
+ Program ast = null;
+ InputStream in = new ByteArrayInputStream(lcDecl.getBytes());
+ LabCommScanner scanner = new LabCommScanner(in);
+ LabCommParser parser = new LabCommParser();
+ Collection errors = new LinkedList();
+
+ InRAMCompiler irc = null;
+ try {
+ Program p = (Program)parser.parse(scanner);
+ p.errorCheck(errors);
+ if (errors.isEmpty()) {
+ ast = p;
+ } else {
+ System.out.println("*** Errors:");
+ for (Iterator iter = errors.iterator(); iter.hasNext(); ) {
+ String s = (String)iter.next();
+ System.out.println(s);
+ }
+ }
+ } catch (IOException e) {
+ e.printStackTrace();
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+
+ if (ast != null) {
+ irc = handleAst(ast, handlers);
+ } else {
+ System.err.println("compilation failed");
+ }
+ return irc;
+ }
+ /* dummy test creating instances of sample and handler, and calling handle*/
+ private static void dummyTest(InRAMCompiler irc) {
+ try {
+ Class hc = irc.load("gen_"+FOO+"Handler");
+ Object h = hc.newInstance();
+ Class fc = irc.load(FOO);
+ Object f = fc.newInstance();
+ Field x = fc.getDeclaredField("x");
+ Field y = fc.getDeclaredField("y");
+ Field z = fc.getDeclaredField("z");
+ x.setInt(f, 10);
+ y.setInt(f, 11);
+ z.setInt(f, 12);
+ Method m;
+ try {
+ m = hc.getDeclaredMethod("handle_"+FOO, fc);
+ m.invoke(h, f);
+ } catch (SecurityException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ } catch (NoSuchMethodException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ } catch (IllegalArgumentException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ } catch (InvocationTargetException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ }
+
+ } catch (ClassNotFoundException e) {
+ e.printStackTrace();
+ } catch (InstantiationException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ } catch (IllegalAccessException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ } catch (SecurityException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ } catch (NoSuchFieldException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ }
+ }
+
+ /** generate labcomm code and compile handlers
+ *
+ * @param lcAST - the AST of the labcomm declaration
+ * @param handlers - a map <name, source> of handlers for the types in ast
+ * @return an InRAMCompiler object containing the generated clases
+ */
+ private static InRAMCompiler handleAst(Program lcAST, HashMap<String, String> handlers) {
+ Map<String, String> genCode = new HashMap<String, String>();
+ try {
+ lcAST.J_gen(genCode, "labcomm.generated");
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ System.out.println("Generated labcomm code:");
+
+ InRAMCompiler irc = new InRAMCompilerJavax("labcomm.generated", null);
+
+ Iterator<String> i = genCode.keySet().iterator();
+ while(i.hasNext()){
+ final String sampleName = i.next();
+ final String src = genCode.get(sampleName);
+ System.out.println("***"+sampleName+"\n"+src);
+ StringBuilder sb = new StringBuilder();
+ sb.append("package labcomm.generated;\n");
+ sb.append("public class gen_"+sampleName+"Handler implements "+sampleName+".Handler {\n");
+ sb.append(handlers.get(sampleName));
+ sb.append("}\n");
+ System.out.println("-------------------------------------");
+ System.out.println(sb.toString());
+ try {
+ irc.compile(sampleName, src);
+ irc.compile("gen_"+sampleName+"Handler", sb.toString());
+ } catch (IllegalArgumentException e) {
+ e.printStackTrace();
+ } catch (SecurityException e) {
+ e.printStackTrace();
+ } catch (ClassNotFoundException e) {
+ e.printStackTrace();
+ } catch (IllegalAccessException e) {
+ e.printStackTrace();
+ } catch (InvocationTargetException e) {
+ e.printStackTrace();
+ } catch (NoSuchMethodException e) {
+ e.printStackTrace();
+ }
+ System.out.println("================================");
+ }
+ return irc;
+ }
+}
diff --git a/examples/dynamic/runme.sh b/examples/dynamic/runme.sh
index 3ad8f8d..b83a2d2 100644
--- a/examples/dynamic/runme.sh
+++ b/examples/dynamic/runme.sh
@@ -1,5 +1,5 @@
#dummy script to test the on-the-fly compilation
-javac -cp .:../../compiler/labComm.jar:../../lib/java/labcomm.jar:../../lib/tools/beaver.jar:../../lib/tools/beaver-rt.jar:../../lib/tools/jastadd2.jar:../../lib/tools/JFlex.jar:../../lib/tools/proj.jar TestLabCommCompiler.java
+javac -cp .:../../compiler/labComm.jar:../../lib/java/labcomm.jar:../../lib/tools/beaver.jar:../../lib/tools/beaver-rt.jar:../../lib/tools/jastadd2.jar:../../lib/tools/JFlex.jar:../../lib/tools/proj.jar TestLabcommGen.java
-java -cp .:../../compiler/labComm.jar:../../lib/java/labcomm.jar:../../lib/tools/beaver.jar:../../lib/tools/beaver-rt.jar:../../lib/tools/jastadd2.jar:../../lib/tools/JFlex.jar:../../lib/tools/proj.jar TestLabCommCompiler simple.lc encoded_data
+java -cp .:../../compiler/labComm.jar:../../lib/java/labcomm.jar:../../lib/tools/beaver.jar:../../lib/tools/beaver-rt.jar:../../lib/tools/jastadd2.jar:../../lib/tools/JFlex.jar:../../lib/tools/proj.jar TestLabcommGen simple.lc handlers.txt encoded_data
--
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